JP2023076994A - Cleaning gun device - Google Patents

Abstract

To provide a cleaning gun device which can select water mist, detergent mist, water, or detergent water according to a level of dirtiness of an object to be cleaned, such as a vehicle, and jet it from a mist nozzle body or a nozzle body.SOLUTION: According to the invention, a nozzle switch lever 72 is manually operated to switch a nozzle switch valve 3 to a mist nozzle position V1 or a nozzle position V2, and an opening/closing operation lever 270 is manually operated to place an opening/closing body 7 (an on-off valve plate 251) at a closed position Z1, a first hole open position Z2 (an open position), a second hole open position Z3, or a third hole open position Z4 to select very fine water mist, very fine detergent mist, air mixed water, or air mixed detergent according to a level of dirtiness of an object to be cleaned, such as a vehicle, and jet it from a mist nozzle body 32 or a nozzle body 33 of an injector Y to the object to be cleaned.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning gun device that injects liquid onto an object to be cleaned such as a vehicle when cleaning the object to be cleaned.

Patent document 1 discloses a high-pressure jet gun as a technique for injecting a liquid onto an object to be cleaned such as a vehicle. The high-pressure water jet gun includes a water passage having a pressurized water intake, an air passage having a compressed air intake, a confluence portion where the water passage and the air passage join to form a mixed liquid of pressurized water and compressed air, and a mixed liquid. and a manual valve provided in the mixture passage.
The high-pressure water jet gun shoots high-pressure water by opening a manual valve.

JP-A-2003-33680

In Patent Document 1, although it is possible to inject a high-pressure water stream in which pressurized water and compressed air are mixed, it is not possible to inject a liquid such as a mixture of detergent liquid and water according to the dirtiness of a vehicle or the like.

The present invention selects mist of water, mist of detergent liquid and liquid mixed with water, water, detergent liquid and liquid mixed with water according to the dirtiness of the object to be washed such as a vehicle, and uses an injector. To provide a mist nozzle body or a cleaning gun device capable of jetting from the nozzle body.

Claim 1 according to the present invention has a nozzle head main body which is formed in a cylindrical shape and has an outflow passage opening at both ends of the cylinder, a mist nozzle body for injecting liquid mist, and a nozzle body for injecting liquid. an injector attached to one cylinder end side of the nozzle head body and communicating the mist nozzle body and the nozzle body with the outflow path; The nozzle is switched to a mist nozzle position that communicates the passage, or communicates the nozzle body and the outflow path, and communicates the mist nozzle body and the outflow path, or a nozzle position that communicates the nozzle body and the outflow path. a nozzle switching valve, a valve switching operation body arranged in the nozzle head body for manually switching the nozzle switching valve to the mist nozzle position or the nozzle position, one cylinder end opening and the other cylinder end closing. a storage container formed in a cylindrical shape to store a detergent liquid; a lid body detachably attached to the storage container by closing a cylindrical end opening of the storage container; and a detergent disposed in the storage container. a liquid outflow pipe; a gun body attached to the lid with an air introduction space provided therebetween; an opening/closing body accommodated in the air introduction space; an opening/closing operation body having an opening/closing operation lever protruding from the gun body through the opening; and an air inflow hole penetrating the lid and opening into the air introduction space and the storage container, wherein the detergent outflow pipe is one pipe The gun body is arranged such that one end communicates with the detergent liquid outflow path and the other tube end is immersed in the detergent liquid stored in the storage container, and the gun body includes an inflow path penetrating through the gun body, a detergent liquid introduction passage disposed in the gun body, facing the detergent liquid outflow passage and opening into the air introduction space and opening into the inflow passage; an air introduction hole that is open and communicates with the air inflow hole through the air introduction space, wherein one inflow path end of the inflow path communicates with the outflow path to form the other cylinder of the nozzle head body. The opening/closing body is attached to the end side of the inflow channel, and water flows in from the other inflow channel end of the inflow channel. is disposed between to block the detergent introduction path from the detergent outflow path, or to communicate the detergent outflow path and the detergent introduction path, and to block the detergent introduction path from the detergent outflow path. or an open position in which the detergent solution outflow channel and the detergent introduction channel are communicated with each other, and the opening/closing operation body moves the opening/closing body to the closed position or the open position by manually operating the operation piece. This cleaning gun device is characterized by:

According to a second aspect of the present invention, the opening/closing body has a detergent fluid circulation hole penetrating the opening/closing body, and the detergent fluid circulation hole communicates with the detergent fluid outflow path and the detergent fluid introduction path, respectively. At the same time, the opening/closing operation body is set to the closed position or the hole-open position in which the detergent liquid flow hole communicates with the detergent liquid outflow path and the detergent liquid introduction path. 2. The cleaning gun device according to claim 1, wherein the opening/closing body is set to the open position or the hole opening position.

According to a third aspect of the present invention, the opening/closing body is formed with a first detergent liquid circulation hole passing through the opening/closing body and a hole diameter different from that of the first detergent liquid flow path hole, and passes through the opening/closing body. and a second detergent solution flow hole, which communicates the first detergent solution flow hole with the detergent solution outflow channel and the detergent solution introduction channel, respectively, or the detergent solution outflow channel and the detergent solution introduction channel, respectively. and the closed position, or the first hole opening position, or the detergent outflow path and the detergent introduction The opening/closing operation body is set to a second hole-opening position communicating with each of the passages, and the opening/closing operation body moves the opening/closing body to the valve-closing position, the first hole-opening position, or the second hole-opening position by manually operating the operation piece. 2. A cleaning gun device according to claim 1, characterized in that it is in position.

According to the present invention, the valve switching body is manually operated to switch the nozzle switching valve between the mist nozzle position and the nozzle position, and the opening/closing operation lever is manually operated to switch the opening/closing body to the closed position or the open position (first hole opening). position, second hole position), water mist, detergent liquid and water mixed liquid mist, water, detergent liquid and water are mixed according to the dirt condition of the object to be washed such as a vehicle A liquid can be selected and sprayed from the mist nozzle body or nozzle body of the injector onto the object to be cleaned.

1 is a front perspective view of a cleaning gun device; FIG. Fig. 2 is a rear perspective view of the cleaning gun device; It is a front view which shows a gun device for cleaning. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3; FIG. 5 is a partially enlarged view of FIG. 4 and a cross-sectional view showing the nozzle head main body, the injector, the valve switching operation body, and the nozzle switching valve. (a) is a perspective view showing a nozzle head main body, and (b) is a front view showing the nozzle head main body. (a) is a plan view (top view) showing the nozzle head main body, and (b) is a cross-sectional view taken along line BB of FIG. 6(a). (a) is a rear perspective view showing the spray ring body of the injector, and (b) is a front view showing the spray ring body. (a) is a rear view showing a spray ring body of the injector, and (b) is a sectional view taken along line CC of FIG. 8(b). (a) is a perspective view showing the guide ring and mist guide of the mist nozzle body of the injector, and (b) is a bottom view showing the guide ring and mist guide of the mist nozzle body. FIG. 3 is a plan view (top view) showing a guide ring and a mist guide of the mist guide nozzle body of the injector; FIG. 4 is a front view showing the guide ring and mist guide of the mist nozzle body of the injector; (a) is a front perspective view showing the nozzle body of the injector, and (b) is a front view showing the nozzle body of the injector. FIG. 14 is a cross-sectional view taken along line DD of FIG. 13; (a) is a front perspective view showing the rectifying ring body of the injector, and (b) is a rear view showing the rectifying ring body of the injector. FIG. 15(b) is a cross-sectional view taken along the line EE. (a) is a rear view of an injector in which a guide ring, a mist guide (mist nozzle body) and a nozzle body are assembled in a spray ring body; is a rear view in which the is incorporated in the spray ring body. FIG. 17B is an enlarged cross-sectional view taken along line FF of FIG. 17B. FIG. 19 is an enlarged view of part G of FIG. 18; 20(a) is a front perspective view showing a nozzle switching lever of the valve switching operation body, (b) is a front view showing the nozzle switching lever, and (c) is a sectional view taken along line HH of FIG. 20(b). (a) is a front perspective view showing a valve body guide of the valve switching operation body, and (b) is a rear perspective view showing the valve body guide. (a) is a rear view showing a valve body guide, and (a) is a front view showing a valve body guide. (a) is a plan view (mist nozzle position) in which the nozzle switching lever is arranged in the nozzle head main body, and (a) is a front view (mist nozzle position) in which the nozzle switching lever is arranged in the nozzle head main body. (a) is a plan view (nozzle position) in which the nozzle switching lever is arranged on the nozzle head main body, and (a) is a front view (nozzle position) in which the nozzle switching lever is arranged on the nozzle head main body. (a) is a front view (mist nozzle position) in which the valve body guide is inserted into the nozzle head body, and (b) is a front view (nozzle position) in which the valve body guide is inserted into the nozzle head body. (a) is a rear perspective view showing a switching valve body of the nozzle switching valve, and (b) is a front view showing the switching valve body. It is a rear view which shows a switching valve body. (a) is a front perspective view showing a switching valve seat, and (b) is a rear exploded perspective view showing the switching valve seat. (a) is a front view showing a switching valve seat, and (b) is a rear view of the switching valve seat with the valve seat flat plate removed. It is a rear view of a switching valve seat. 30. (a) is a side view of a switching valve seat, and (b) is a sectional view taken along the line II of FIG. (a) is a front view (mist nozzle position) in which the switching valve body is inserted into the nozzle head body, and (b) is a front view (nozzle position) in which the switching valve body is inserted in the nozzle head body. (a) is a front view (mist nozzle position) in which the switching valve seat is inserted in the nozzle head main body, and (b) is a front view (nozzle position) in which the switching valve seat is inserted in the nozzle head main body. FIG. 4 is a rear view of the switching valve seat inserted into the spray ring body of the injector; FIG. 5 is a partially enlarged view of FIG. 4, and is a cross-sectional view showing the storage container, the lid, the opening/closing valve, the opening/closing operation body, and the gun main body. (a) is a front perspective view showing the lid, and (b) is a rear perspective view showing the lid. 37(a) is a front view showing the lid, and (b) is a cross-sectional view along JJ of FIG. 37(a). 38(a) is a perspective view showing the piston shaft of the lid, (b) is a plan view (top view) showing the piston shaft, and (c) is a sectional view taken along the line KK of FIG. 38(b). (a) is a front perspective view showing an opening/closing body and an opening/closing operation body, and (b) is a rear perspective view showing the opening/closing body and an opening/closing operation body. 40(a) is a plan view showing an opening/closing body and an opening/closing operation body, and (b) is a cross-sectional view taken along line LL of FIG. 40(a). It is a partially enlarged view of FIG. 40(a). 42(a) is a perspective view showing the positioning plate of the opening/closing operation body, (b) is a plan view showing the positioning plate, and (c) is a sectional view taken along line MM of FIG. 42(b). 43(a) is a plan view (closed position) in which the opening/closing body and the opening/closing operation body are incorporated in the lid, and (b) is an enlarged view of part N of FIG. 43(a). (a) is a cross-sectional view taken along the line OO of FIG. 43(a), and (b) is an enlarged view of part P of FIG. 44(a). 45(a) is a plan view (first hole opening position) in which the opening/closing body and the opening/closing operation body are incorporated in the cover, and (b) is an enlarged view of part Q of FIG. 45(a). (a) is a cross-sectional view taken along line RR of FIG. 45(a), and (b) is an enlarged view of part S of FIG. 46(a). 47(a) is a plan view (second hole-opening position) in which the opening/closing body and the opening/closing operation body are incorporated in the cover, and (b) is an enlarged view of part T of FIG. 47(a). 47(a) is a cross-sectional view taken along line U--U of FIG. 47(a), and FIG. 48(b) is a partially enlarged view of V of FIG. 48(a). 49(a) is a plan view (third hole opening position) in which the opening/closing body and the opening/closing operation body are incorporated in the lid, and (b) is an enlarged view of part W in FIG. 49(a). (a) is a cross-sectional view taken along line XX of FIG. 49(a), and (b) is an enlarged view of Y part of FIG. 50(a). (a) is an upper perspective view showing a gun body, and (b) is a lower perspective view showing the gun body. (a) is a front view showing a gun body, and (b) is a plan view showing the gun body. (a) is a bottom view showing the gun body, and (b) is a cross-sectional view taken along line bb of FIG. 52(a). FIG. 36 is an enlarged view of part a of FIG. 35 ; (a) is a plan view showing the closed position of the opening/closing body, (b) is a plan view showing the first opening position (open position) of the opening/closing body, and (c) is a plane showing the second opening position of the opening/closing body. FIG. (d) is a plan view showing the third opening position of the opening/closing body. (a) is a cross-sectional view showing a first hole opening position of an opening/closing body (on-off valve plate), and (b) is a cross-sectional view showing a second hole position of the opening/closing body (on-off valve plate). FIG. 5 is a cross-sectional view showing the position of a third hole of an opening/closing body (an opening/closing valve plate); FIG. 6 is a partially enlarged view of FIG. 5 showing a mist nozzle body; FIG. 6 is a partially enlarged view of FIG. 5 showing a nozzle body;

A cleaning gun device according to the present invention will be described with reference to FIGS. 1 to 59. FIG.

1 to 57, the cleaning gun device X (vehicle cleaning gun device) includes a nozzle head body 1, an injector Y, a valve switching operation body 2 (valve switching operation tool), a nozzle switching valve 3, and a storage container 4. , a lid 5 , a detergent solution outflow pipe 6 , an opening/closing body 7 (opening/closing valve body), an opening/closing operation body 8 (opening/closing operation tool), and a gun body 9 .

As shown in FIGS. 1 to 7, the nozzle head main body 1 is made of synthetic resin or the like and is formed in a tubular shape (cylindrical shape). The nozzle head body 1 has an outflow passage 15, a lever guide groove 16, a lever storage wall 17 (storage wall plate), a lever storage cylindrical portion 18, and a plurality (four) of head projections 19, 20, 21, 22.

The outflow path 15 (outflow hole) is formed in the nozzle head main body 1 and opened at both cylindrical ends 1A and 1B of the nozzle head main body 1, as shown in FIGS. The outflow path 15 passes through the nozzle head body 1 in the direction A of the cylinder center line a of the nozzle head body 1 (hereinafter referred to as "cylinder center line direction A"), and extends through both cylinder ends 1A, 1A of the nozzle head body 1. It is opened at 1B (one tube end 1A, the other tube end 1B). The outflow channel 15 has a large-diameter outflow hole 23 (large-diameter outflow channel) and a small-diameter outflow hole 24 (small-diameter outflow channel).

The large-diameter outflow hole 23 (large-diameter outflow path) is opened at one cylindrical end 1A of the nozzle head body 1, as shown in FIGS. The large-diameter outflow hole 23 extends in the cylinder centerline direction A from one cylinder end 1A of the nozzle head body 1 to the other cylinder end 1B side.

The small-diameter outflow hole 24 (small-diameter outflow passage) opens at the other cylindrical end 1B of the nozzle head body 1, as shown in FIGS. The small diameter outflow hole 24 extends from the other cylinder end 1B toward the one cylinder end 1A side and communicates with the large diameter outflow hole 23 . The small-diameter outflow hole 24 is reduced in diameter from the large-diameter outflow hole 23 with a head step portion 25 (stepped surface), and the other cylinder end of the nozzle head body 1 in the cylinder centerline direction A from the large-diameter outflow hole 23 . Extends to 1B.

As shown in FIGS. 1, 2, and 5 to 7, the lever guide groove 16 is located between one cylinder end 1A of the nozzle head main body 1 and the head step portion 25 in the cylinder centerline direction A (front-rear direction). placed in The lever guide groove 16 is formed continuously with the head step portion 25 (head step surface). The lever guide groove 16 is formed in the nozzle head body 1 so as to extend in the circumferential direction (circumferential direction) of the nozzle head body 1 .
In the circumferential direction of the nozzle head body 1, the lever guide groove 16 extends from a first orthogonal line b (perpendicular line) perpendicular to the cylinder center line a to both sides of the first orthogonal line b with a groove length angle of θ1. and extends on both sides of the first orthogonal line b. The lever guide groove 16 has a groove width in the cylinder center line direction A, a groove depth in the radial direction of the nozzle head main body 1 , and opens in the outer peripheral surface 1 a of the nozzle head main body 1 . The lever guide groove 16 has an arc-shaped groove bottom surface 16A in the groove depth direction.

As shown in FIGS. 5 to 7, the lever storage wall 17 (lever storage wall plate) is made of synthetic resin and arranged in the large-diameter outflow hole 23 (outflow path 15). The lever storage wall 17 is arranged in the cylinder centerline direction A at the head stepped portion 25 (head stepped surface) with a storage interval therebetween. The lever housing wall 17 is located at the center of the nozzle head body 1 (cylinder center line a ).
The lever housing wall 17 is formed integrally with the nozzle head body 1 so as to be adjacent to the groove width end of the lever guide groove 16 on one cylinder end 1A side of the nozzle head body 1 in the cylinder centerline direction A. The lever housing wall 17 protrudes from one groove width end of the lever guide groove 16 into the large-diameter outflow hole 23 (outflow path 15). The lever housing wall 17 protrudes from the inner peripheral surface 1 b of the nozzle head body 1 toward the cylinder center line a of the nozzle head body 1 . The lever housing wall 17 has an inclined surface 26 (inclined wall portion/inclined wall plate portion) extending from the inner peripheral surface 1b of the nozzle head body 1 toward the head step portion 25 and the cylinder center line a. .
As a result, the lever housing wall 17 forms a lever housing space SP between itself and the head stepped portion 25 .

The lever storage space SP is formed between the lever storage wall 17 and the head step portion 25, as shown in FIGS. The lever storage space SP is liquid-tightly partitioned from the large-diameter outflow hole 23 (outflow path 15) by the lever storage wall 17 and the head stepped portion 25, and the lever storage space SP is separated from the lever storage wall 17 and the head stepped portion 25 (head step surface). formed between The lever housing space SP is opened in the lever guide groove 16 (groove bottom surface 16A of the lever guide groove 16) at the center of the nozzle head body 1 in the direction C (lateral direction/horizontal direction) of the second orthogonal line c. The lever housing space SP has an opening length angle (opening length) smaller than the groove length angle θ1 (groove length) of the lever guide groove 16 in the circumferential direction (circumferential direction) of the nozzle head body 1. , the lever guide groove 16 (groove bottom surface 16A).

As shown in FIGS. 5 to 7, the lever housing cylindrical portion 18 is made of synthetic resin and formed into a cylindrical shape. The lever housing cylindrical portion 18 is arranged in the large-diameter outflow hole 23 (outflow path 15). The lever housing cylindrical portion 18 is concentric with the nozzle head main body 1 (with respect to the cylinder center line a) with an outflow interval α (outflow gap) between the inner peripheral surface 1b (large diameter outflow hole 23) of the nozzle head main body 1. concentric).
The lever housing cylindrical portion 18 is formed integrally with the head stepped portion 25 of the nozzle head body 1 (nozzle head body 1) inside the large-diameter outflow hole 23 (inside the outflow passage 13). The lever housing cylindrical portion 18 protrudes from the head step portion 25 of the nozzle head body 1 toward one cylinder end 1A in the cylinder centerline direction A, and is arranged in the large diameter outflow hole 23 (inside the outflow passage 15). .

As shown in FIGS. 5 to 7, the lever storage cylinder 18 has a lever storage wall 17 (lever storage wall plate) arranged between the outer peripheral surface of the lever storage cylinder 18 and the inner peripheral surface 1b of the nozzle head body 1. , and arranged concentrically with the nozzle head main body 1 . The lever housing cylindrical portion 18 is formed integrally with the lever housing wall 17 so as to protrude from the lever housing wall 17 toward one of the cylinder ends 1A in the direction A of the cylinder center line.
As a result, the lever housing cylindrical portion 18 protrudes one housing cylinder end 18A into the large diameter outflow hole 23 (the large diameter outflow hole 23 between the lever housing wall 17 and the one cylinder end 1A) and the other cylinder end. 18B is closed by a stepped portion 25 and supported by the nozzle head main body 1 (head stepped portion 25) and the lever housing wall 17. As shown in FIG.
The small-diameter outflow hole 24 of the outflow passage 15 opens into the head stepped portion 25 around the circumference of the lever housing cylindrical portion 18 and communicates with the large-diameter outflow hole 23 .

The lever housing cylindrical portion 18 has a lever housing hole 27 as shown in FIG. The lever housing hole 27 passes through the lever housing cylindrical portion 18 and opens into the lever housing space SP and the lever housing cylindrical portion 18 in the direction B (vertical direction/vertical direction) of the first orthogonal line b.
Thereby, the lever housing hole 27 communicates with the inside of the lever housing cylindrical portion 18 and the lever housing space SP.

Each of the head projections 19-22 is arranged in a large-diameter outflow hole 23 (outflow path 15), as shown in FIGS. Each of the head projections 19 to 22 is arranged at one cylinder end 1A of the nozzle head main body 1 in the direction A of the cylinder centerline with a projection interval β. Each of the head projections 19 to 22 extends in the direction A of the cylinder center line A from one cylinder end 1A by a projection interval β and between the lever housing wall 17 (lever housing wall plate). Each of the head protrusions 19 to 22 is integrally formed with the nozzle head main body 1 from synthetic resin. Each of the head projections 19 to 22 is arranged to protrude from the inner peripheral surface 1b of the nozzle head body 1 into the large-diameter outflow hole 23 (inside the outflow path 15) in the radial direction of the nozzle head body 1. As shown in FIG.

As shown in FIG. 6, the head projection 19 (first head projection) is arranged at a head projection angle θA (first head projection angle θA) with respect to the first orthogonal line b in the circumferential direction (circumferential direction) of the nozzle head body 1. are placed apart. The head projection 19 is arranged on one side of the first orthogonal line b with a head projection angle θA on the first orthogonal line b.
As shown in FIGS. 6 and 7, the head projection 20 (second head projection) is arranged at a head projection angle θA on the first orthogonal line b in the circumferential direction (circumferential direction) of the nozzle head body 1. be. The head projection 20 is arranged on the other side of the first orthogonal line b (the side opposite to the head projection 19) with a head projection angle θA on the first orthogonal line b.

As shown in FIG. 6, the head projection 21 (third head projection) is separated from the head projection 19 (first head projection) by a head projection angle θC in the circumferential direction (circumferential direction) of the nozzle head body 1. It is arranged to face the head protrusion 20 (second head protrusion). The head projection angle θC (third head projection angle) is, for example, 70° (70°) (θC=70°).
The head projection 21 is positioned between the head projection 19 (first head projection) and the head projection 20 (second head projection) in the circumferential direction (circumferential direction) of the nozzle head main body 1 so that the head projection 20 ( second head protrusion) at an angle of 180 degrees (180°).
As a result, the head projection 21 is arranged on one side of the first orthogonal line b (on the side of the head projection 19) with a head projection angle θA (first head projection angle) on the first orthogonal line b.

As shown in FIGS. 6 and 7, the head projection 22 (fourth head projection) is arranged in the circumferential direction (circumferential direction) of the nozzle head main body 1 so as to correspond to each of the head projections 20 and 21 (second and third head projections). is placed between The head projection 22 faces the head projection 19 (first head projection) at a head projection angle θC (third head projection angle) from the head projection 20 in the circumferential direction (circumferential direction) of the nozzle head main body. placed. The head projection 22 is located between the head projection 21 (third head projection) and the head projection 19 (first head projection) in the circumferential direction (circumferential direction) of the nozzle head main body 1, and the head projection 19 ( (first head protrusion) at an angle of 180 degrees (180°).
As a result, the head projection 22 is arranged on the other side of the first orthogonal line b (on the head projection 20 side) with a head projection angle θA (first projection angle) on the first orthogonal line b.

The injector Y, as shown in FIGS. It comprises a body 33 and a rectifying ring body 34 (rectifying cylinder). The injector Y is attached to one cylinder end 1A side of the nozzle head body 1, and communicates the mist nozzle body 32 and the nozzle body 33 with the outflow passage 15 (large diameter outflow hole 23) of the nozzle head body 1.
In the injector Y, the mist nozzle body 32 jets liquid mist, and the nozzle body 33 jets liquid (linear liquid).

The connection ring body 30 has a connection cylinder main body 36 and an outflow guide ring 37, as shown in FIGS.

As shown in FIGS. 5 and 18, the connecting cylinder main body 36 is made of, for example, synthetic resin and formed into a cylindrical shape. The connecting tube main body 36 has a connecting mounting hole 38 and a connecting female screw 39 . The connecting mounting hole 38 is formed through the connecting tube main body 36 in the direction A of the tube center line a of the connecting tube main body 36 (the connecting tube center line a). The connecting mounting holes 38 are opened at both tube ends 36A and 36B (connecting tube ends) of the connecting tube main body 36 . The connecting mounting hole 38 includes a connecting small-diameter hole portion 38A opening at one cylindrical end 36A (one connecting cylindrical end), a connecting large-diameter hole portion 38B opening at the other cylindrical end 36B (the other connecting cylindrical end), and It has a connecting middle diameter hole portion 38C. The connecting medium-diameter hole portion 38C is formed between the connecting small-diameter hole portion 38A and the connecting large-diameter hole portion 38B, and is continuous with the connecting small-diameter hole portion 38A and the connecting large-diameter hole portion 38B. It is formed in the connecting tube main body 36 with a first connecting stepped portion 40 that expands from the connecting small-diameter hole portion 38A. The connecting large-diameter hole portion 38B is formed in the connecting tube main body 36 by expanding the diameter of the connecting medium-diameter hole portion 38C with the second connecting stepped portion 41 . The connection female screw 39 (female screw portion) is formed on the inner peripheral surface (inner peripheral surface of the hole) of the large-diameter connection hole portion 38B.

The outflow guide ring 37 is formed in a cylindrical shape, for example, from flexible synthetic rubber or the like. The outflow guide ring 37, as shown in FIGS. 5 and 18, has an annular groove 42 opening at one cylindrical end 37A (one guide ring end). The outflow guide ring 37 is formed by press-fitting one tube end 36A side (one coupling tube end side) of the coupling tube main body 36 into the annular groove 42 to connection tube end side).
As a result, the outflow guide ring 37 is put on one tube end 36A side of the connecting tube main body 36 and inserted into the connecting small-diameter hole 38A of the connecting tube main body 36 .

The spray ring body 31 (spray body) is made of, for example, a synthetic resin and formed into a cylindrical shape. As shown in FIGS. 1, 3 to 5, 8 and 9, the spray ring body 31 includes a guide outer cylindrical portion 45, a spray nozzle plate 46 (spray nozzle plate), a guide inner cylindrical portion 47, a plurality of It has (six) air inlet holes 48 and a seal ring 49 .

The guide outer cylindrical portion 45 is made of, for example, synthetic resin and formed into a cylindrical shape. The guide outer cylindrical portion 45 has a nozzle seal groove 50 as shown in FIGS. The nozzle seal groove 50 is arranged on one cylindrical end 45A side of the guide outer cylindrical portion 45 (one guide outer cylindrical end side). The nozzle seal groove 50 is formed in an annular shape and opened on the outer peripheral surface of the guide outer cylindrical portion 45 . The nozzle seal groove 50 opens at one cylindrical end 45A of the guide outer cylindrical portion 45 .

The atomizing nozzle plate 46 is made of, for example, a synthetic resin and formed into an annular plate (annular plate). The spray nozzle plate 46 (spray nozzle circular plate), as shown in FIGS. It is formed in the annular plate as a diameter larger than the outer diameter of the cylinder).
The fogging nozzle plate 46 has a plate back surface 46B (the other plate surface) in contact with the other cylindrical end 45B (the other guide outer cylindrical end) of the guide outer cylindrical portion 45, and the other cylindrical end 45B of the guide outer cylindrical portion 45. It is located at end 45B. The spray nozzle plate 46 is formed integrally with the guide outer cylindrical portion 45 . The spray nozzle plate 46 is arranged concentrically with the guide outer cylindrical portion 45 [concentric with the pipe center line a (guide pipe center line) of the spray ring body 31 (guide outer cylindrical portion 45)]. The spray nozzle plate 46 closes the outer peripheral side of the guide outer cylindrical portion 45 (part of the guide outer cylindrical portion 45) at the other cylindrical end 45B of the guide outer cylindrical portion 45. As shown in FIG.
The spray nozzle plate 46 is arranged concentrically with the guide outer cylindrical portion 45 and has an annular flange portion 51 protruding from the outer peripheral surface of the guide outer cylindrical portion 45 . The flange portion 51 is formed to protrude radially outward of the guide outer cylindrical portion 45 from the outer peripheral surface of the guide outer cylindrical portion 45 over the circumferential direction (circumferential direction) of the guide outer cylindrical portion 45 .

The guide inner cylindrical portion 47 is made of, for example, a synthetic resin and formed into a cylindrical shape. The guide inner cylindrical portion 47 is arranged inside the guide outer cylindrical portion 45, as shown in FIGS. The guide inner cylindrical portion 47 is spaced apart from the outer peripheral surface of the guide inner cylindrical portion 47 and the inner peripheral surface of the guide outer cylindrical portion 45, and concentrically with the guide outer cylindrical portion 45 and the spray nozzle plate 46 [spray ring body]. 31 (guide outer cylindrical portion 45) concentrically with the cylinder center line a (nozzle cylinder center line)].
As a result, between the outer peripheral surface of the guide inner cylindrical portion 47 and the inner peripheral surface of the guide outer cylindrical portion 45, mist is dispersed in the circumferential direction (circumferential direction) of the guide outer cylindrical portion 45 (guide inner cylindrical portion 47). A nozzle plate 46 is arranged.

As shown in FIGS. 8 and 9, the guide inner cylindrical portion 47 guides the inner circumference of the spray nozzle plate 46 (the inner circumference of the annular plate) in the direction A of the cylinder center line a of the spray ring body 31. It penetrates densely and is formed integrally with the spray nozzle plate 46 . The guide inner cylindrical portion 47 has one cylindrical end 47A (one guide inner cylindrical end) projected from one cylindrical end 45A (one guide outer cylindrical end) of the guide outer cylindrical portion 45, and the other cylindrical end 47B side. (One guide inner cylinder end side) is arranged so as to protrude from the atomizing nozzle plate 46 .
The guide inner cylindrical portion 47 has an inner small-diameter hole portion C that opens to the other cylindrical end 47B (guide inner cylindrical end) and an inner large-diameter hole portion 47D that opens to one cylindrical end 47A (guide inner cylindrical end). . The inner large-diameter hole portion 47D has an inner stepped portion 52 and is expanded in diameter from the inner small-diameter hole portion 47C.

Each air inlet hole 48 is formed in the atomizing nozzle plate 46 and the guide inner cylindrical portion 47, as shown in FIGS. Each air inlet hole 48 is arranged adjacent to the outer peripheral surface of the guide inner cylindrical portion 47 . The air inflow holes 48 are arranged at an inflow hole angle (inflow hole interval) between the air inflow holes 48 in the circumferential direction (circumferential direction) of the guide inner cylindrical portion 47 .
Each air inflow hole 48 extends in the direction of the cylinder center line a of the spray ring body 31 (guide inner cylindrical portion 47) and opens to the plate surface 46A (one plate surface) of the spray nozzle plate 46. . Each air inflow hole 48 penetrates through the guide inner cylindrical portion 47 in the radial direction of the guide inner cylindrical portion 47 and opens into the guide inner cylindrical portion 47 .
Each air inflow hole 48 penetrates through the guide inner cylindrical portion 47 and opens into the guide inner cylindrical portion 47 between the other cylindrical end 47B of the guide inner cylindrical portion 47 and the inner stepped portion 52 .

The seal ring 49 is formed in an annular shape with an elastic material such as synthetic rubber. The seal ring 49 is fitted (arranged) in the nozzle seal groove 50 by being fitted onto the guide outer cylindrical portion 45 .

As shown in FIGS. 5, 10 and 12, the mist nozzle body 32 has a plurality of (eg, 15) nozzle throttle holes 53 (throttle holes on the mist nozzle body 32 side) and a plurality of (eg, 15) mist throttle holes. It has a hole 54, a guide ring 55, and a plurality (eg 15) of mist guides 56 (mist cores).

Each nozzle throttle hole 53 is formed in the spray nozzle plate 46 (spray ring body 31), as shown in FIGS. Each nozzle aperture 53 is located in the spray nozzle plate 46 between the guide outer cylindrical portion 45 and the guide inner cylindrical portion 47 .
Each nozzle throttle hole 53 (throttle hole) is defined by the inner peripheral surface of the guide outer cylindrical portion 45 and the outer peripheral surface of the guide inner cylindrical portion 47 with the cylinder center line a of the spray ring body 31 (guide inner cylindrical portion 47). are arranged on a circle CK (on a concentric circle) located on the spray nozzle plate 46 between .
Each nozzle throttle hole 53 is arranged at a hole angle between the nozzle throttle holes 53 in the circumferential direction (circumferential direction) of the guide inner cylindrical portion 47 (guide outer cylindrical portion 45).
Each nozzle aperture 53 extends from the plate surface 46A of the spray nozzle plate 46 in the direction A of the cylinder center line a of the spray ring body 31 and opens to the plate surface 46A of the spray nozzle plate 46 . Each nozzle aperture 53 has a nozzle aperture diameter dF.

Each mist throttle hole 54 is formed in the spray nozzle plate 46, as shown in FIGS. Each mist throttle hole 54 is located in the spray nozzle plate 46 between the guide outer cylindrical portion 45 and the guide inner cylindrical portion 47 . Each mist throttle hole 54 is arranged between each nozzle throttle hole 53 and one cylinder end 45A of the guide outer cylinder part 45 in the direction A of the cylinder center line a of the spray ring body 31 (guide inner cylinder part 47). be done.
Each mist throttle hole 54 is arranged at the same hole angle as each nozzle throttle hole 53 in the circumferential direction (circumferential direction) of the guide inner cylindrical portion 47 (guide outer cylindrical portion 45). Each mist throttle hole 54 is arranged corresponding to each nozzle throttle hole 53 and is arranged concentrically with each nozzle throttle hole 53 .

As shown in FIG. 9, each mist throttle hole 54 is arranged in the guide outer cylindrical portion 45 (inner peripheral surface) and the guide inner cylindrical portion 45 (inner peripheral surface) in the direction A of the cylinder center line a of the spray ring body 31 (guide inner cylindrical portion 47). An annular circulation space γ (annular circulation passage) between the portions 47 (outer peripheral surface) is opened and communicated with each nozzle throttle hole 53 . Each mist throttle hole 54 extends in the direction A of the cylinder center line a of the spray ring body 31 with a reduced diameter from the annular flow space γ side (one cylinder end 45A side of the guide outer cylindrical portion 45). . Each mist throttle hole 54 is gradually reduced in diameter from the annular circulation space γ toward the plate surface 46A (each nozzle throttle hole 53) of the spray nozzle plate 46 in the direction A of the cylinder center line a of the spray ring body 31. It is formed in a conical hole (truncated conical hole). Each mist throttle hole 54 is communicated with each nozzle throttle hole 53 and the annular circulation space γ, and passes through the spray nozzle plate 46 .
Each mist throttle hole 54 has a mist hole length ML in the direction A of the cylinder center line a of the spray ring body 31, as shown in FIG. 9(c). Each mist throttle hole 54 has a mist hole diameter dM on the annular flow space γ side and a mist hole diameter dF (same as each nozzle throttle hole 53) on the nozzle throttle hole 53 side (mist hole diameter dF<mist hole diameter dM ).

The guide ring 55 is made of synthetic resin and has an annular shape. As shown in FIGS. 10 to 12, the guide ring 55 has a center circle CL with the same diameter as the circle CK in which the mist throttle holes 54 (each nozzle throttle holes 53) are arranged: D8.
The guide ring 55 has a plurality of guide protrusions 57 . The number of guide projections 57 is the same as the number of mist throttle holes 54 (15).
Each guide protrusion 57 is arranged on the center circle CL of the guide ring 55 . Each guide protrusion 57 is arranged at a guide angle in the circumferential direction (circumferential direction) of the guide ring 55 . Each guide protrusion 57 protrudes from the outer peripheral surface 55A and the inner peripheral surface 55B of the guide ring 55 in the radial direction of the guide ring 55 and is integrally formed with the guide ring 55 .

As shown in FIGS. 10 to 12, each mist guide 56 is formed of synthetic resin in a conical spiral shape (conical spiral shape or truncated conical spiral shape).
Each mist guide 56 has a conical top surface 56A, a conical bottom surface 56B (conical bottom plane), a conical side surface 56C, and a plurality of spiral surfaces, for example, first and second spiral surfaces 58, 59 (helical surfaces). Prepare.

The first and second spiral surfaces 58 and 59 are formed in the same spiral shape as shown in FIGS. 10-12. The first and second spiral surfaces 58, 59 intersect the conical side surface 56C of the mist guide 56 and are located between the conical bottom surface 56B and the conical top surface 56A.
The first and second spiral surfaces 58 and 59 are arranged symmetrically with respect to the cone center line f of the mist guide 56 . The second spiral surface 59 is rotated by an angle of 180 degrees from the position of the first spiral surface 58 about the cone center line f.
The first and second spiral surfaces 58 and 59 are spirally formed while decreasing in diameter from the conical bottom surface 56B toward the conical top surface 56A and extend from the conical bottom surface 56B to the conical top surface 56A.
The first and second spiral surfaces 58, 59 extend from the conical bottom surface 56B to the conical top surface 56A while gradually narrowing the width of the surfaces intersecting the conical side surface 56C.
The first and second spiral surfaces 58, 59 are arranged opposite each other at the conical upper surface 56A.

Each mist guide 56 has a guide height GL in the direction of the cone centerline f, as shown in FIG. The guide height GL is lower (shorter) than the mist hole length ML of the mist throttle hole 54 .
Each mist guide 56 has a maximum bottom width GH of the conical bottom surface 56B, as shown in FIG. The maximum bottom width GH is narrower than the mist hole diameter dM of the mist throttle hole 54 .

Each mist guide 56 (mist core) is fixed to the guide ring 55 and formed integrally with the guide ring 55, as shown in FIGS. Each mist guide 56 is arranged on the center circle CL of the guide ring 55 . Each mist guide 56 is arranged with the cone center line f (guide center line) positioned on the center circle CL of the guide ring 55 . Each mist guide 56 is spaced apart by a guide angle (same as the hole angle of each mist throttle hole 53) between each mist guide 56 in the circumferential direction (circumferential direction) of the guide ring 55, and between each guide projection 57 placed in Each mist guide 56 is arranged so that the surface ends 58A and 59A of the first and second spiral surfaces 58 and 59 are positioned (aligned) with the outer peripheral surface 55A and the inner peripheral surface 55B of the guide ring 55 on the conical bottom surface 56B. . The surface end 58A of the first spiral surface 58 is positioned (matched) with the outer peripheral surface 55A of the guide ring 55, and the end surface 59A of the second spiral surface 59 is positioned (matched) with the inner peripheral surface 55B of the guide ring 55. .

As shown in FIGS. 10 to 12, each mist guide 56 is integrally fixed (formed) to the guide ring 55 with the conical bottom surface 56B abutting on the guide ring 55 (one annular flat surface 55C). As shown in FIG. 12, the conical bottom surface 56B of each mist guide 56 protrudes from the outer peripheral surface 55A and the inner peripheral surface 55B of the guide ring 55 in the direction orthogonal to the ring center line k of the guide ring 55 to reach the guide ring 55. Fixed.
As a result, each mist guide 56 has its conical bottom surface 56B connected to one annular flat surface 55C of the guide ring 55 and protrudes from one annular flat surface 55C of the guide ring 55 in the direction of the ring center line k. Each mist guide 56 is erected on one annular flat surface 55</b>C of the guide ring 55 .
The guide ring 55, each mist guide 56 and each guide projection 57 are integrally formed of synthetic resin.

As shown in FIGS. 5, 13 and 14, the nozzle body 33 includes a nozzle outer cylindrical portion 60, a nozzle plate 61, a nozzle inner cylindrical portion 62, and a plurality of nozzle throttle holes 63 (throttle holes on the nozzle body 33 side). have

The nozzle outer cylindrical portion 60 is formed of synthetic resin in a cylindrical shape. The nozzle outer cylindrical portion 60 has substantially the same outer diameter (peripheral diameter) as the inner large diameter hole portion 47</b>D of the guide inner cylindrical portion 47 .

The nozzle plate 61 is made of synthetic resin and formed into an annular plate (annular plate). As shown in FIGS. 13 and 14, the nozzle plate 61 is arranged in the nozzle outer cylindrical portion 60 with the plate back surface 61B in contact with one cylindrical end 60A (one guide cylindrical end) of the nozzle outer cylindrical portion 60. be. The nozzle plate 61 is formed integrally with the nozzle outer cylindrical portion 60 . The nozzle plate 61 is arranged concentrically with the nozzle outer cylindrical portion 60 [concentric with the cylinder center line a (nozzle cylinder center line) of the nozzle body 33 (nozzle outer cylindrical portion 60)]. The nozzle plate 61 closes the outer peripheral side of the nozzle outer cylindrical portion 60 (part of the nozzle outer cylindrical portion 60) at one cylindrical end 60A of the nozzle outer cylindrical portion 60. As shown in FIG. The nozzle plate 61 has a nozzle stepped portion 64 recessed toward the other cylindrical end 60B of the nozzle outer cylindrical portion 60 (the other nozzle outer cylindrical end side) and is continuous with the outer peripheral surface of the nozzle outer cylindrical portion 60 .

The nozzle inner cylindrical portion 62 is made of synthetic resin and formed in a cylindrical shape. As shown in FIGS. 13 and 14, the nozzle inner cylindrical portion 62 has a closing plate 65 that closes one cylindrical end 62A (one nozzle inner cylindrical end). The nozzle inner cylindrical portion 62 is arranged concentrically with the nozzle plate 61 (nozzle outer cylindrical portion 60) (concentric with the cylinder center line a of the nozzle body 33). The nozzle inner cylindrical portion 62 is formed integrally with the nozzle plate 61 with the other cylindrical end 63B side (the other nozzle inner cylindrical end side) in contact with the inner peripheral surface of the nozzle plate 61 .
Thereby, the inside of the nozzle inner cylindrical portion 62 communicates with the inside of the nozzle outer cylindrical portion 60 through the inner peripheral surface of the nozzle plate 61 (the inner peripheral surface of the annular plate).
The nozzle inner cylindrical portion 62 is arranged to protrude from the plate surface 61A of the nozzle plate 61 in the direction A of the cylinder center line a of the nozzle body 33 (nozzle outer cylindrical portion 60).
The nozzle plate 61 is arranged between the nozzle inner cylindrical portion 62 and the nozzle outer cylindrical portion 60 .

Each nozzle throttle hole 63 (throttle hole) is formed in the nozzle plate 61 as shown in FIGS. Each nozzle throttle hole 63 penetrates the nozzle plate 61 in the direction of the cylinder center line a (nozzle outer cylinder center line) of the nozzle body 33 (nozzle outer cylinder portion 60) to form a plate surface 61A and a plate back surface of the nozzle plate 61. 61B is opened.
Each nozzle aperture 63 is a circle with a different diameter located on the nozzle plate 61 between the nozzle outer cylindrical portion 60 and the nozzle inner cylindrical portion 62 with the cylinder center line a of the nozzle body 33 (nozzle outer cylindrical portion 60) as the center. It is arranged on CP, CQ (outer circle CP, inner circle CQ). Each nozzle throttle hole 63 is arranged with a throttle hole angle between each nozzle throttle hole 63 in the circumferential direction (circumferential direction) of the nozzle body 33 (nozzle outer cylindrical portion 60).

As shown in FIGS. 5, 15 and 16, the rectifying ring body 34 includes a rectifying inner cylindrical portion 66, a rectifying outer cylindrical portion 67, a rectifying nozzle plate 68, and a plurality of (for example, 24) rectifying throttle holes 69. have.

The inner rectifying cylindrical portion 66 and the outer rectifying cylindrical portion 67 are formed of synthetic resin in a cylindrical shape. The rectifying inner cylindrical portion 66 is arranged inside the rectifying outer cylindrical portion 67 as shown in FIGS. 15 and 16 .

As shown in FIGS. 15 and 16, the rectifying outer cylindrical portion 67 is concentric with the rectifying inner cylindrical portion 66 [concentric with the cylinder center line a (rectifying inner cylinder center line) of the rectifying ring body 34 (rectifying inner cylindrical portion 66). ].
The rectifying outer cylindrical portion 67 has one cylindrical end 67A (one rectifying outer cylindrical end) connected to one cylindrical end 66A (one rectifying inner cylindrical end) of the rectifying inner cylindrical portion 66 . The rectifying outer cylindrical portion 67 is formed integrally with the rectifying inner cylindrical portion 66 so as to have a rectifying stepped portion 70 , which is enlarged in diameter from one cylindrical end 66 A (one rectifying inner cylindrical end) of the rectifying inner cylindrical portion 66 . be.

The rectifying nozzle plate 68 is made of synthetic resin and formed in an annular shape. The rectifying nozzle plate 68 (annular nozzle plate) is arranged concentrically with the rectifying inner cylindrical portion 66, as shown in FIGS. The rectifying nozzle plate 68 has a plate back surface 68B directed to one cylinder end 66A of the rectifying inner cylindrical portion 66, and a plate front surface 68A to the other cylinder end 66B (the other rectifying inner cylinder end) of the rectifying inner cylindrical portion 66. facing toward the inside of the rectifying inner cylindrical portion 66 .
The rectifying nozzle plate 68 is arranged so that the other cylinder end 66B of the rectifying inner cylindrical portion 66 and the rectifying nozzle plate 68 It is arranged on the side of one cylinder end 66A of the inner rectifying cylindrical portion 66 (on the outer rectifying cylindrical portion 67 side) with a rectifying interval δ between the plate surfaces 68A. The flow straightening nozzle plate 68 closes the inner peripheral surface side of the flow straightening inner cylindrical portion 66 (part of the flow straightening inner cylindrical portion 66 ) and is formed integrally with the flow straightening inner cylindrical portion 66 .

Each rectifying throttle hole 69 is formed in a rectifying nozzle plate 68, as shown in FIGS. Each rectifying throttle hole 69 is arranged on a circle CR located on the rectifying nozzle plate 68 with the tube center line a of the rectifying ring body 34 (rectifying inner cylindrical portion 66 ) as the center. Each regulating throttle hole 69 is arranged with a throttle hole angle between each regulating throttle hole 69 in the circumferential direction (circumferential direction) of the rectifying inner cylindrical portion 66 .
Each rectifying throttle hole 69 penetrates the rectifying nozzle plate 68 in the direction A of the cylinder center line a of the rectifying ring body 34 (rectifying inner cylindrical portion 66), and extends to the plate surface 68A and the plate back surface 68B of the rectifying nozzle plate 68. Opened.
As a result, each regulating throttle hole 69 communicates with the other cylinder end 66</b>B side in the rectifying inner cylindrical portion 66 and inside the rectifying outer cylindrical portion 67 .

As shown in FIGS. 17 to 19, the injector Y has a spray ring body 31 (a guide outer cylindrical portion 45, a spray nozzle plate 46, a guide inner cylindrical portion 47 and a seal ring 49) inside a connecting ring body 30. The mist nozzle body 32 (the guide ring 55 and each mist guide 56), the nozzle body 33 (the nozzle outer cylindrical portion 60, the nozzle plate 61 and the nozzle inner cylindrical portion 62), and the rectifying ring body 34 (the rectifying inner cylindrical 66) is incorporated in the spray ring body 31. As shown in FIG.

17(b), 18 and 19, the spray ring body 31 is inserted into the connecting tube main body 36 and incorporated into the connecting ring body 30. As shown in FIGS. The atomizing ring body 31 (the guide outer cylindrical portion 45, the atomizing nozzle plate 46, the guide inner cylindrical portion 47 and the seal ring 49) is arranged concentrically with the connecting ring body 30 (the connecting tube main body 36).

18 and 19, the spray ring body 31 connects the plate surface 46A of the spray nozzle plate 46 and the other tube end 47B of the guide inner cylindrical portion 47 to one tube end 36A of the connecting tube main body 36. The guide outer cylindrical portion 45, the atomizing nozzle plate 46, the guide inner cylindrical portion 47, and the seal ring 49 are inserted into the connecting cylinder main body 36 from the other cylindrical end 36B of the connecting cylinder main body 36 and disposed.

As shown in FIGS. 18 and 19, in the spray ring body 31, the guide outer cylindrical portion 45 is separated from the connecting tube main body 36 (connecting large-diameter hole portion 38B) with an interval (gap) therebetween. 36 (connection large-diameter hole portion 39B).

In the spray ring body 31, the spray nozzle plate 46, as shown in FIGS. The portion 51 abuts against the first connecting step portion 40 and is inserted (arranged) into the connecting small-diameter hole portion 38A and the connecting medium-diameter hole portion 38C (inside the connecting tube main body 36).
The mist nozzle plate 46 has a plate surface 46A that faces the other cylinder end 37A of the outflow guide ring 37 outside each nozzle throttle hole 53 (mist nozzle body 32) (between the flange portion 51 and each nozzle throttle hole 53). It is inserted (arranged) in the connecting tube main body 36 in close contact.

In the spray ring body 31, the guide inner cylindrical portion 47 is spaced apart from the inner peripheral surface of the outflow guide ring 37 as shown in FIG. It is inserted (projected/arranged) into the small-diameter hole portion 38A).

When the spray ring body 31 is incorporated into the connection ring body 30, the inside of the guide inner cylindrical portion 47 (the inner small diameter hole portion 47C and the inner large diameter hole portion 47D) flows out from the other cylindrical end 47B as shown in FIG. It communicates with the inside of the guide ring 37 (inside the connecting tube main body 36).
When the spray ring body 31 is incorporated into the connection ring body 30, each air inflow hole 48 communicates with the inside of the outflow guide ring 37 (inside the connection tube main body 36), as shown in FIGS.
When the spray ring body 31 is incorporated into the connection ring body 30, each nozzle throttle hole 53 (mist nozzle body 32) is located inside the outflow guide ring 37 (inside the connection tube main body 36) as shown in FIGS. communicated. Each mist throttle hole 54 (mist nozzle body 32 ) communicates with the inside of the outflow guide ring 37 (inside the connecting tube main body 36 ) through each nozzle throttle hole 53 .

As shown in FIGS. 17A, 18 and 19, the guide ring 55 and each mist guide 56 (mist nozzle body 32) are provided in an annular flow space γ (between the guide outer cylindrical portion 45 and the guide inner cylindrical portion 47). ) and incorporated into the atomizing ring body 31 .
The guide ring 55 is arranged concentrically with the guide inner cylindrical portion 47 . The guide ring 55 is fitted on the guide inner cylindrical portion 47 from one cylindrical end 47A with the conical upper surface 56A of each mist guide 56 directed toward the spray nozzle plate 46 (each mist throttle hole 54) to form an annular circulation space. γ. The guide ring 55 is arranged in the annular flow space γ with each mist guide 56 inserted into each mist throttle hole 54 . The guide ring 55 is arranged in the annular circulation space γ with each guide protrusion 57 in contact with the back surface 46B of the spray nozzle plate 46 .

Each mist guide 56 is inserted into each mist throttle hole 54 from the conical upper surface 56A, as shown in FIGS. Each mist guide 56 is arranged in each mist throttle hole 54 with the cone center line k aligned with the hole center line m of each mist throttle hole 54 (each nozzle throttle hole 53). Each mist guide 56 is inserted into each mist restricting hole 54 from the conical upper surface 56A with a gap between the conical side surface 56C and the conical inner peripheral surface 54A of each mist restricting hole 54 . Each mist guide 56 is mounted in each mist restricting hole 54 with the conical bottom surface 56B side (conical side surface 56C on the conical bottom surface 56B side) in contact with the conical inner peripheral surface 54A of each mist restricting hole 54 .
As a result, each mist guide 56 forms a spiral first and second mist flow between the first and second spiral surfaces 58 and 59, the conical inner peripheral surface 54A of each mist throttle hole 54, and the conical side surface 56C. It is mounted in each mist restrictor hole 54 forming passages .epsilon.1 and .epsilon.2.
Each mist guide 56 and each mist throttle hole 54 form first and second spiral mist flow paths ε1 and ε2 along the first and second spiral surfaces 58 and 59, respectively.

As shown in FIG. 19, the first and second mist passages ε1 and ε2 are composed of first and second spiral surfaces 58 and 59, a conical inner circumferential surface 54A of the mist throttle hole 54, and a conical side surface 56C of the mist guide 56. spirally formed between The first and second mist passages ε1 and ε2 have cross-sectional areas (first and The cross-sectional areas of the first and second mist passages ε1 and ε2 perpendicular to the second spiral surfaces 58 and 59 are reduced, and extend spirally in each mist throttle hole 54 and in the annular circulation space γ (dispersion The plate back surface 46B) of the fog nozzle plate 46 is opened.

As shown in FIG. 19, the guide ring 55 and the guide protrusions 57 move from the annular flow path space γ to the back surface 46B of the spray nozzle plate 46 as the mist guides 56 are inserted into the mist throttle holes 54. is abutted.

As shown in FIGS. 17 and 18, the nozzle body 33 is inserted into the guide inner cylindrical portion 47 and incorporated into the spray ring body 31 . The nozzle body 33 (nozzle outer cylindrical portion 60 , nozzle plate 61 and nozzle inner cylindrical portion 62 ) is arranged concentrically with the guide inner cylindrical portion 47 .
The nozzle body 33 is composed of the nozzle outer cylindrical portion 60, the nozzle plate 61 and the nozzle inner cylindrical portion 62 with one cylindrical end 62A (blocking plate 65) of the nozzle inner cylindrical portion 62 facing the other cylindrical end 47B of the guide inner cylindrical portion 47. The portion 62 is inserted (arranged) into the spray ring body 31 from one cylindrical end 45A of the guide outer cylindrical portion 45 .

In the nozzle body 33, the nozzle outer cylindrical portion 60, as shown in FIG. and is inserted (arranged) in the inner large-diameter hole portion 47D (inside the guide inner cylindrical portion 47).

In the nozzle body 33, the nozzle plate 61, as shown in FIG. is inserted (arranged) in the inner small-diameter hole portion 47C (inside the guide inner cylindrical portion 47).
The nozzle plate 61 is positioned between the inner stepped portion 52 and the air inflow holes 48 by contact with the nozzle stepped portion 64 and the inner stepped portion 52, and is positioned within the inner small diameter hole portion 47C (the guide inner cylindrical portion 47C). inside).

In the nozzle body 33, as shown in FIG. 18, the nozzle inner cylindrical portion 62 is inserted (arranged) into the inner small diameter hole portion 47C (inside the guide inner cylindrical portion 47) through the inner large diameter hole portion 47D. The nozzle inner cylindrical portion 62 is arranged concentrically with the guide inner cylindrical portion 47 .
The nozzle inner cylindrical portion 62 is inserted into the guide inner cylindrical portion 47 from one cylindrical end 62A with an outflow gap between it and the inner peripheral surface of the guide inner cylindrical portion 47 . The nozzle inner cylindrical portion 62 is arranged such that one cylindrical end 62A (blocking plate 65) protrudes into the outflow guide ring 37 from the guide inner cylindrical portion 47 (inner small diameter hole portion 47C).
As a result, the nozzle inner cylindrical portion 62 and the guide inner cylindrical portion 47 form an annular outflow path τ( forming an annular outflow space).
The annular outflow path τ is formed between the nozzle plate 61 (plate surface 61A) and the other cylindrical end 47B of the guide inner cylindrical portion 47 in the direction A of the cylinder center line a of the spray ring body 31 (nozzle body 33). and communicated with the outflow guide ring 37 .

When the nozzle body 33 is incorporated into the spray ring body 31, each nozzle throttle hole 63 (nozzle body 33) is arranged parallel to the cylinder center line a of the spray ring body 31, as shown in FIGS. (annular outflow space), and communicates with the inner large-diameter hole portion 47D (one cylindrical end 47A side of the guide inner cylindrical portion 47).
When the nozzle body 33 is incorporated into the spray ring body 31, each air inflow hole 48 (spray ring body 31), as shown in FIGS. ) and between the other cylindrical end 47B of the guide inner cylindrical portion 47 and the nozzle plate 61 (plate surface 61A). Each air inflow hole 48 communicates with an annular outflow path τ (annular outflow space) between the other cylindrical end 47B of the guide inner cylindrical portion 47 and the nozzle plate 61 (plate surface 61A). Each air inflow hole 48 communicates with the inside of the outflow guide ring 37 (atmosphere).

As shown in FIGS. 17 to 19, the rectifying ring body 34 has the rectifying inner cylindrical portion 66 and the rectifying nozzle plate 68 inserted between the guide outer cylindrical portion 45 and the guide inner cylindrical portion 47 (annular circulation space γ). , is incorporated in the atomizing ring body 31 . The rectifying ring body 34 is arranged concentrically with the atomizing ring body 31 .
The rectifying ring body 34 is formed by inserting the rectifying inner cylindrical portion 66 and the rectifying nozzle plate 68 into the annular flow space γ with the other cylindrical end 66B of the rectifying inner cylindrical portion 66 facing the guide ring 55 in the annular flow space γ. placed.

In the straightening ring body 34, as shown in FIGS. 18 and 19, the straightening inner cylindrical portion 66 is separated from the outer peripheral surface of the guide inner cylindrical portion 47 by an annular outer flow path λ1 (inner outflow space). It is inserted into the guide outer cylindrical portion 45 . The rectifying inner cylindrical portion 66 is inserted into the annular outflow passage γ while being in close contact with the inner peripheral surface of the guide outer cylindrical portion 45 and with the other cylindrical end 66B in contact with each guide protrusion 57 (mist nozzle body 32). be.
The rectifying inner cylindrical portion 66 is disposed between the guide outer cylindrical portion 45 and the guide inner cylindrical portion 47 with the rectifying stepped portion 70 in contact with one cylindrical end 45A of the guide outer cylindrical portion 45 .

In the straightening ring body 34, the straightening nozzle plate 68 is inserted into the annular outflow passage γ by inserting the guide inner cylindrical portion 47 into the inner peripheral surface 68a of the straightening nozzle plate 68, as shown in FIGS. be. The rectifying nozzle plate 68 is fitted onto the guide inner cylindrical portion 47 from one cylindrical end 47A of the guide inner cylindrical portion 47 to bring the inner peripheral surface 68a of the rectifying nozzle plate 68 into close contact with the outer peripheral surface of the guide inner cylindrical portion 47. are placed.

When the nozzle body 33 is incorporated into the spray ring body 31, the rectifying outer cylindrical part 67 moves toward the guide outer cylindrical part 45 in the direction A of the cylinder center line a of the spray ring body 31, as shown in FIGS. extends continuously to one cylindrical end 45A.
When the nozzle body 33 is incorporated into the spray ring body 31, each regulating throttle hole 69 is arranged parallel to the cylinder center line a of the spray ring body 31 and communicates with the outer flow path λ1.
When the nozzle body 33 is incorporated into the spray ring body 31, each mist guide 56 is prevented from coming off from each mist throttle hole 54 by the rectifying inner cylindrical portion 66 that contacts the guide ring 55, as shown in FIGS. be done.

The valve switching operation body 2 includes a nozzle switching lever 72, a valve body guide 73 (valve body guide body/valve body guide member), and a coil spring 74, as shown in FIGS.

The nozzle switching lever 72 has a lever shaft main body 76, a lever guide plate 77 and a lever operating projection 78, as shown in FIG.

The lever shaft main body 76 is formed in a shaft shape from synthetic resin. As shown in FIG. 20, the lever shaft main body 76 is formed to have, for example, a rectangular cross-section, and has a front surface plane 76C and a rear surface surface 76D in the shaft thickness direction J orthogonal to the shaft center line g of the lever shaft main body 76. have.
The lever shaft main body 76 has an inclined protrusion 79 , a lever cylindrical portion 80 and a pair of connecting protrusions 81 and 82 .

As shown in FIG. 20 , the inclined protrusion 79 is arranged on one shaft end 76A side of the lever shaft body 76 and formed integrally with the lever shaft body 76 . The inclined protrusion 79 is formed to protrude from a shaft surface plane 76C (shaft front plane) of the lever shaft main body 76 while being inclined toward one shaft end 76A.

The lever cylindrical portion 80 is formed in a cylindrical shape from synthetic resin. As shown in FIG. 20 , the lever cylindrical portion 80 is arranged continuously with the other shaft end 76B of the lever shaft body 76 and formed integrally with the lever shaft body 76 . The lever cylinder portion 80 is arranged with the lever cylinder center line i directed in the shaft thickness direction J. As shown in FIG.

Each connecting projection 81, 82 is made of synthetic resin. As shown in FIG. 20, each of the connecting projections 81 and 82 is arranged inside the lever cylindrical portion 80 and formed integrally with the lever cylindrical portion 80 . Each of the connecting protrusions 81 and 82 protrudes from the inner peripheral surface of the lever cylinder portion 80 toward the lever cylinder center line i.
As shown in FIG. 20 , the connecting protrusion 81 is spaced apart from the shaft center line g of the lever shaft body 76 by a lever protrusion angle θF in the circumferential direction (circumferential direction) of the lever cylindrical portion 80 . placed on one side of the
The connecting protrusion 82 is arranged to face the connecting protrusion 81 at an angle of 180 degrees (180°) with respect to the connecting protrusion 81 .

The lever guide plate 77 is made of synthetic resin and has an arc shape. 20, the lever guide plate 77 is formed in an arc shape along the bottom surface 16A of the lever groove 16. As shown in FIG. The lever guide plate 77 is arranged continuously with one shaft end 76A of the lever shaft main body 76 and formed integrally with the lever shaft main body 76 . The lever guide plate 77 extends from the shaft center line g of the lever shaft main body 76 with the same arc length on both sides of the shaft center line g. The lever guide plate 77 has an arc length shorter than the groove length of the lever guide groove 16 and has substantially the same plate width as the lever guide groove 16 .

As shown in FIG. 20 , the lever operating projection 78 is made of synthetic resin and formed integrally with the lever guide plate 77 . The lever operating projection 78 protrudes from the arc outer peripheral surface 77A of the lever guide plate 77 in the direction G of the shaft center line g of the lever shaft main body 76 .

The valve body guide 73 is made of synthetic resin. As shown in FIGS. 21 and 22, the valve body guide 73 includes a valve body support plate 83 (a flat valve body support plate), a lever connecting shaft 84, a plurality of (a pair of) guide grooves 85 and 86, a spring support shaft 87, and a It has a plurality (a pair of) of valve support protrusions 88 and 89 .

As shown in FIGS. 21 and 22, the valve support plate 83 is made of synthetic resin and formed into a flat plate, and has a circular flat plate 90 and a plurality (a pair of) flat plate pieces 92 and 93 .

The circular flat plate 90 is formed of synthetic resin in a circular shape and has a plate front surface 90A and a plate back surface 90B in the plate thickness direction M. As shown in FIG.

Each flat plate piece 92, 93 (plate piece) has plate front surfaces 92A, 93A and plate back surfaces 92B, 93B in the plate thickness direction M, as shown in FIGS. The flat plate pieces 92 and 93 are arranged at intervals of 180 degrees (180°) between the flat plate pieces 92 and 93 in the circumferential direction of the circular flat plate 90 . Each of the flat plate pieces 92 and 93 is formed integrally with the circular flat plate 90 by arranging the plate surfaces 92A and 93A on the same plane as the plate surface 90A of the circular flat plate 90 . Each of the flat plate pieces 92 and 93 protrudes radially outward of the circular flat plate 90 from the outer circumference (peripheral surface) of the circular flat plate 90 .

As shown in FIGS. 21 and 22, the lever connecting shaft 84 is made of synthetic resin and arranged concentrically with the circular flat plate 90 (valve support plate 83). The lever connecting shaft 84 is formed integrally with the circular flat plate 90 with one shaft end in contact with the back surface 90B of the circular flat plate 90 . The lever connecting shaft 84 is arranged to protrude from the back surface 90B of the circular flat plate 90 in the thickness direction M of the circular flat plate 90 .

Each guide groove 85, 86 is formed in the lever connecting shaft 84 as shown in FIGS. The guide grooves 85 and 86 are arranged at an angle of 180 degrees (180°) between the guide grooves 85 and 86 in the circumferential direction of the lever connecting shaft 84 (the circular flat plate 90).
One guide groove 85 is formed on one flat plate piece 92 at a first groove angle θp and on the other flat plate piece 93 at a second groove angle θq (θq = 180-θp) between the flat plate pieces 92 and 93 .
In the circumferential direction of the lever connecting shaft 84 (circular flat plate 90), the other guide groove 86 is formed on one flat plate piece 92 at a second groove angle θq and on the other flat plate piece 93 at a first groove angle θp (θp = 180 - θq) and is arranged between the flat plate pieces 92 and 93 .

As shown in FIGS. 21 and 22, the guide grooves 85 and 86 extend along both shaft ends of the lever connecting shaft 84 in the direction of the axis centerline of the lever connecting shaft 84 (thickness direction M of the circular flat plate 90). Extending therebetween, the lever connecting shaft 84 is formed. Each of the guide grooves 85 and 86 has a groove depth in the radially inner direction of the lever connecting shaft 84, is opened on the outer circumference (outer peripheral surface) of the lever connecting shaft 84, and extends toward the other shaft end 84B of the lever connecting shaft 84. is opened to

As shown in FIGS. 21 and 22, the spring support shaft 87 is arranged concentrically with the circular flat plate 90 (lever connecting shaft 84). The spring support shaft 87 is formed integrally with the circular flat plate 90 with one shaft end in contact with the plate surface 90A of the circular flat plate 90 . The spring support shaft 87 is arranged to protrude from the plate surface 90A of the circular flat plate 90 to the side opposite to the lever connecting shaft 84 in the plate thickness direction M of the circular flat plate 90 .

Each valve support projection 88, 89 is made of synthetic resin. As shown in FIGS. 21 and 22, the valve body support projections 88 and 89 are spaced apart at an angle of 180 degrees (180°) in the circumferential direction of the circular flat plate 90. are placed between the respective flat plate pieces 92,93.
One valve body support projection 88 is disposed on the plate surface 92A of one flat plate piece 92 and formed integrally with the flat plate piece 92 . The valve support projection 88 is arranged on a circle CS located on the flat plate piece 92 with the plate centerline of the circular flat plate 90 as the center. In the circumferential direction of the circular flat plate 90, the valve support projection 88 is arranged in one guide groove 85 at a first groove angle θp and in the other guide groove 86 at a second groove angle θq.
The other valve support projection 89 is disposed on the plate surface 93A of the other flat plate piece 93 and formed integrally with the flat plate piece 93 . The valve support projection 88 is arranged on a circle CS located on the flat plate piece 93 . In the circumferential direction of the circular flat plate 90, the valve support projection 89 is arranged in one guide groove 85 at a second groove angle θq and in the other guide groove 86 at a first groove angle θp.
Each of the valve body support projections 88 and 89 extends from plate surfaces 92A and 93A of each of the plate pieces 92 and 93 to the spring support shaft 87 in the plate thickness direction M of the circular plate 90 (the direction of the axis of the spring support shaft 87). is arranged to protrude in the same direction as (the side opposite to the lever connecting shaft 84).

The valve switching operation body 2 (nozzle switching lever 72, valve body guide 73 and coil spring 74) is arranged in the nozzle head main body 1 (lever housing space SP) as shown in FIGS. It is built into the head main body 1 .

As shown in 5, FIGS. 24 and 25, the nozzle switching lever 72 has an inclined projection 79 directed toward one cylinder end 1A of the nozzle head body 1 and a cylinder centerline of the lever cylinder 80 toward the nozzle head body. 1 is inserted (stored) from the lever guide groove 16 into the lever storage space SP toward the cylinder centerline direction A.

The nozzle switching lever 72 is inserted into the lever storage space SP from the lever cylindrical portion 80 as shown in FIGS. 5, 24 and 25 . The nozzle switching lever 72 is disposed by inserting (storing) the lever cylindrical portion 80 into the lever housing cylindrical portion 18 from the lever housing space SP. The lever cylindrical portion 80 is arranged in the lever housing cylinder portion 18 concentrically with the lever housing cylinder portion 18 . The lever cylindrical portion 80 rotates with respect to the lever housing cylindrical portion 18 (nozzle head main body 1) with the outer circumference (outer circumferential surface) of the lever cylindrical portion 80 in contact with the inner circumference (inner circumferential surface) of the lever housing cylindrical portion 18. placed freely.

As shown in FIG. 5, the nozzle switching lever 72 is arranged slidably with respect to the lever housing wall 17 (nozzle head main body 1) with the inclined protrusion 79 in contact with the inclined surface 26 in the lever housing space SP. be done.

The nozzle switching lever 72 is arranged by inserting (storing) a lever guide plate 77 into the lever guide groove 16, as shown in FIGS. The lever guide plate 77 is rotatable (rotatable) with respect to the nozzle head main body 1 in the lever guide groove 16 by bringing the arc inner peripheral surface 77B of the lever guide plate 77 into contact with the groove bottom surface 16A (arc groove bottom surface). freely). The lever operating protrusion 78 is arranged to protrude from the lever guide groove 16 .

As shown in FIGS. 23 and 24, when the nozzle switching lever 72 (the valve switching operation body 2) is incorporated in the nozzle head main body 1, the cylinder center line of the lever cylindrical portion 80 (nozzle head main body) is manually operated. 1 cylinder centerline a) as a center, it is rotated with respect to the nozzle head main body 1 and arranged (positioned) at the mist nozzle position V1 or the nozzle position V2.
The lever guide plate 77 slides on the bottom surface 16A of the lever guide groove 16 in the circumferential direction of the nozzle head body 1 and is arranged (positioned) at the mist nozzle position V1 or the nozzle position V2.
The mist nozzle position V1 is such that, as shown in FIG. This is the contact position. At the nozzle position V2, as shown in FIG. 24, the other arc length end 77b of the lever guide plate 77 contacts the other groove length end 16b of the lever guide groove 16 in the circumferential direction of the nozzle head body 1. position.
The nozzle switching lever 72 rotates between the mist nozzle position V1 and the nozzle position V2 while being supported by the lever housing wall 17 while the inclined protrusion 79 slides (slidingly contacts) on the inclined surface 26 of the lever housing wall 17. (Turn).

In the valve switching operation body 2, the valve body guide 73 is inserted (stored) into the nozzle head body 1 (large diameter outflow hole 23) from one cylindrical end 1A of the nozzle head body 1, as shown in FIGS. ) is done. The valve body guide 73 directs the lever connecting shaft 84 toward the lever housing cylindrical portion 18 (lever housing wall 17), and directs the spring support shaft 87 and the valve body support projections 88 and 89 to one cylinder end 1A of the nozzle head main body 1. It is arranged in the large-diameter outflow hole 23 (in the nozzle head body 1).

5 and 25, the valve body guide 73 inserts the lever connecting shaft 84 into the lever housing cylindrical portion 18 from the large diameter outflow hole 23, and inserts it into the lever cylindrical portion 80 inside the lever housing cylindrical portion 18. , and connected to the nozzle switching lever 72 .
As shown in FIG. 5, the valve body guide 73 inserts (arranges) a seal ring 94 between the lever connecting shaft 84 (outer peripheral surface) and the lever cylindrical portion 80 (inner peripheral surface) so that the lever connecting shaft 84 is It seals (seales) against the lever cylinder 80 .
As shown in FIGS. 5 and 25, the lever connecting shaft 84 is inserted (stored) from the other shaft end 84 of the lever connecting shaft 84 into the lever housing cylindrical portion 18 and the lever cylindrical portion 80 in this order. The lever connecting shaft 84 is connected to the lever cylindrical portion 80 (nozzle switching lever 72) by pressing the connecting protrusions 81 and 82 of the lever cylindrical portion 80 (nozzle switching lever 72) into the guide grooves 85 and 86. . The lever cylindrical portion 80 (nozzle switching lever 72) is connected to the lever connecting shaft 84 (valve guide 73) by press-fitting the connecting protrusions 81 and 82 into the guide grooves 85 and 86, respectively.
As shown in FIG. 25, when the lever connecting shaft 84 is connected to the lever cylindrical portion 80, the valve body guide 73 is rotated (pivoted) together with the nozzle switching lever 72 to the mist nozzle position V1 or the nozzle position V2.

As shown in FIG. 5, the valve body guide 73 moves the back surface 90B of the circular flat plate 90 into the lever housing cylinder 18 as the lever connecting shaft 84 is inserted into the lever housing cylinder 80 (the lever housing cylinder 18). It is arranged on the lever housing wall 17 with a space therebetween, in rotatable contact with one housing tube end 18A.
The valve body guide 73 is arranged in the nozzle head body 1 (large diameter outflow hole 23) with a space (interval) between the circular flat plate 90, the respective flat plate pieces 92 and 93 and the large diameter outflow hole 23 (inner peripheral surface). placed in
As a result, in the nozzle head body 1, the small-diameter outflow hole 24, as shown in FIG. , and the large-diameter outflow hole 23 on one cylinder end 1A side.
In the valve body guide 73 , the spring support shaft 87 and the valve body support protrusions 88 and 89 extend from the circular flat plate 90 and the flat plate pieces 92 and 93 to the nozzle head body 1 in the cylinder centerline direction A of the nozzle head body 1 . It protrudes toward one cylinder end 1A and is disposed in the large-diameter outflow hole 23 (inside the nozzle head main body 1).

The coil spring 74 is formed in a cylindrical spiral shape, as shown in FIGS. The coil spring 74 is housed in the nozzle head body 1 with the coil centerline directed toward the cylinder centerline direction of the nozzle head body 1 . The coil spring 74 is inserted (stored) into the nozzle head body 1 (large diameter outflow hole 23) from one cylindrical end 1A with a gap (space) in the large diameter outflow hole 23 (inner peripheral surface).
One coil end 74A of the coil spring 74 is fitted onto the spring support shaft 87 (valve guide 73), and the one coil end 74A abuts on the plate surface 90A of the circular flat plate 90. As shown in FIG. The valve guide body guide 73 supports the one coil end 74A side by press-fitting the spring support shaft 87 from the one coil end 74A to the one coil end 74A side of the coil spring 74 .
The coil spring 74 has one coil end 74A side supported by a spring support shaft 87 and protrudes from the valve body guide 73 toward one cylinder end 1A side of the nozzle head body 1 .

The nozzle switching valve 3 includes a switching valve body 95 (valve body) and a switching valve seat 96 (valve seat), as shown in FIGS. 5 and 26 to 34 .

As shown in FIGS. 26 and 27, the switching valve body 95 includes a circular valve body flat plate (valve body plate) 97, a plurality (a pair of) valve body cylindrical portions 98 and 99, and a plurality (a pair) of first liquid outflow valves. It has holes 101 and 102 , a plurality (a pair of) second liquid outflow holes 103 and 104 , and a spring mounting shaft 105 .

As shown in FIGS. 26 and 27, the valve body flat plate 97 is formed of synthetic resin in a circular shape and has a plate front surface 97A and a plate back surface 97B in the plate thickness direction N. As shown in FIGS.

Each of the valve body tubular portions 98 and 99 is made of synthetic resin and formed into a tubular shape. As shown in FIGS. 26 and 27 , each of the valve body cylinder portions 98 and 99 has one cylinder end (one valve body cylinder end) of each valve body cylinder portion 98 and 99 attached to the back surface 97B of the valve body flat plate 97 . , and formed integrally with the valve plate 97 . Each of the valve body cylindrical portions 98 and 99 is formed by a circle CS positioned on the valve body flat plate 97 centered on the center line of the valve body flat plate 97 (a circle having the same radius as the circle CS on which the valve body support projections 88 and 89 are arranged). placed above. The valve body tubular portions 98 and 99 are arranged at an angle of 180 degrees (180°) between the respective valve body tubular portions 98 and 99 in the circumferential direction of the valve disk flat plate 97 . Each of the valve body tubular portions 98 and 99 is arranged to protrude from the back surface 97B of the valve body flat plate 97 in the plate thickness direction N of the valve body flat plate 97 (the direction of the plate centerline of the valve body flat plate 97).

Each of the first liquid outflow holes 101 and 102 is formed in the valve body flat plate 97 as shown in FIGS. The first liquid outflow holes 101 and 102 are arranged in the valve body flat plate 97 with an angle of 180 degrees (180°) between the first liquid outflow holes 101 and 102 in the circumferential direction of the valve body flat plate 97. be done. Each of the first liquid outflow holes 101 and 102 is located on a circle CR (a circle having the same radius as the circle CR on which each rectifying throttle hole 69 is arranged) located on the valve disk plate 97 with the plate centerline of the valve disk plate 97 as the center. placed in
As shown in FIG. 27, one first liquid outflow hole 101 is located at a first hole angle .theta. It is arranged between the respective valve body tubular portions 98 and 99 with a second hole angle θs at 99 .
As shown in FIG. 27, the other first liquid outflow hole 102 is located at a second hole angle .theta. It is arranged between the respective valve body tubular portions 98 and 99 with a first hole angle θr at 99 .
As shown in FIGS. 26 and 27, each of the first liquid outflow holes 101 and 102 passes through the valve plate 97 in the plate thickness direction N of the valve plate 97, and extends through the plate surface 97A of the valve plate 97. and the plate back surface 97B.

Each of the second liquid outflow holes 103, 104 is formed in the valve body flat plate 97 as shown in FIGS. As shown in FIG. 27, the second liquid outflow holes 103 and 104 are separated from each other by an angle of 180 degrees (180°) in the circumferential direction of the valve body flat plate 97. are arranged between each of the first liquid outflow holes 101 and 102 . Each of the second liquid outflow holes 103 and 104 is formed on a circle CP (a circle having the same radius as the circle CP on which each nozzle throttle hole 63 is arranged) located on the valve body flat plate 97 with the plate centerline of the valve body plate 97 as the center. placed in The second liquid outflow holes 103 and 104 are arranged inside the first liquid outflow holes 101 and 102 (on the side of the center line of the valve plate 97).
As shown in FIG. 27, one of the second liquid outflow holes 103 is separated from each of the valve body tubular portions 98 and 99 by an angle of 90 degrees (90°) in the circumferential direction of the valve body flat plate 97. It is arranged between the first liquid outflow hole 101 and the other valve body cylindrical portion 99 .
As shown in FIG. 27, the other second liquid outflow hole 104 is separated from each of the valve body tubular portions 98 and 99 at an angle of 90 degrees (90 degrees) in the circumferential direction of the valve body flat plate 97, and It is arranged between the first liquid outflow hole 102 and one valve body cylindrical portion 98 .
As shown in FIGS. 26 and 27, each of the second liquid outflow holes 103 and 104 penetrates the plate surface 97A of the valve plate 97 in the plate thickness direction N of the valve plate 97. and the plate back surface 97B.

As shown in FIGS. 26 and 27, the spring mounting shaft 105 is made of synthetic resin and arranged concentrically with the valve body flat plate 97 . The spring mounting shaft 105 is formed integrally with the valve body flat plate 97 with one shaft end in contact with the back surface 97B of the valve body flat plate 97 . The spring mounting shaft 105 is arranged between the valve body tubular portions 98 and 99 with a space between them. The spring mounting shaft 105 is arranged between the first liquid outflow holes 101 and 102 with a gap between the first liquid outflow holes 101 and 102 . The spring mounting shaft 105 is arranged between the second liquid outflow holes 103 and 104 with a space between them.
The spring mounting shaft 105 is arranged so as to protrude in the same direction as the respective valve body cylindrical portions 98 and 99 from the back surface 97B of the valve body flat plate 97 in the thickness direction N of the valve body flat plate 97 .

As shown in FIGS. 28 to 31, the switching valve seat 96 includes a valve seat outer cylindrical portion 111, a circular closing plate 112, a valve seat inner cylindrical portion 113, a plurality (a pair of) first liquid inflow holes 114, 115, A plurality (pairs) of second liquid inflow holes 116, 117, a plurality of valve seat fixing grooves 118, 119, 120, 121, a circular valve seat plate 122, a plurality (pairs) of first liquid introduction holes 123, 124, a plurality of It has (a pair of) second liquid introduction holes 125 and 126 and seal rings 127 and 128 .

The valve seat outer cylindrical portion 111 is formed in a cylindrical shape from a synthetic resin.

The closing plate 112 is made of synthetic resin and formed in a circular shape (a circular flat plate). As shown in FIGS. 28 to 31, the closing plate 112 has a plate surface 112A and a plate back surface 112B in the plate thickness direction GP, and is arranged concentrically with the valve seat outer cylindrical portion 111. As shown in FIGS. The closing plate 112 closes (closes) one cylindrical end of the valve seat outer cylindrical portion 111 by abutting the back surface 112B of the closing plate 112 against one cylindrical end (outer cylindrical end) of the valve seat outer cylindrical portion 111. do. The closing plate 112 is formed integrally with the valve seat outer cylindrical portion 111 .

The valve seat inner cylindrical portion 113 is formed in a cylindrical shape from a synthetic resin. The valve seat inner cylindrical portion 113 is arranged concentrically with the valve seat outer cylindrical portion 111, as shown in FIGS. The valve seat inner cylindrical portion 113 is arranged inside the valve seat outer cylindrical portion 111 .
The valve seat inner cylindrical portion 113 is formed integrally with the closing plate 112 with one cylindrical end (one inner cylindrical end) of the valve seat inner cylindrical portion 113 in contact with the plate surface 112A of the closing plate 112 . The valve seat inner cylindrical portion 113 is located on the opposite side of the valve seat outer cylindrical portion 111 from the plate back surface 112B of the closing plate 112 in the plate thickness direction GP of the closing plate 112 (the direction of the cylinder centerline of the valve seat outer cylindrical portion 11). is arranged extending to the

Each first liquid inflow hole 114, 115 is formed in the closing plate 112, as shown in FIGS. The first liquid inflow holes 114 and 115 are separated from each other by an angle of 180 degrees (180°) in the circumferential direction of the closing plate 112 (valve seat inner cylindrical portion 113). is placed on the closing plate 112 . As shown in FIG. 29, each of the first liquid inflow holes 114 and 115 has a circle CR ( It is arranged on a circle having the same radius as the circle CR on which each regulating throttle hole 69 is arranged. Each first liquid inflow hole 114 , 115 is arranged in the closing plate 112 between the valve seat outer cylindrical portion 111 and the valve seat inner cylindrical portion 113 .
Each of the first liquid inflow holes 114 and 115 penetrates the closing plate 112 in the plate thickness direction GP of the closing plate 112 (the direction of the cylinder centerline of the inner cylindrical portion 113 of the valve seat), and extends through the plate surface of the closing plate 112. 112A and the plate back surface 112B are opened. Each of the first liquid inflow holes 114 and 115 passes through the closing plate 112 between the valve seat outer cylindrical portion 111 and the valve seat inner cylindrical portion 113 and communicates with the valve seat outer cylindrical portion 111 .

Each second liquid inflow hole 116, 117 is formed in the closing plate 112, as shown in FIGS. The second liquid inflow holes 116 and 117 are spaced apart at an angle of 180 degrees (180°) in the circumferential direction of the closing plate 112 (valve seat inner cylindrical portion 113). are arranged between the first liquid inflow holes 114 and 115 respectively. Each of the second liquid inflow holes 116 and 117 is separated from each of the first liquid inflow holes 114 and 115 by an angle of 90 degrees (90°) in the circumferential direction of the closing plate 112, and each of the first liquid inflow holes 114 and 114 115. Each of the second liquid inflow holes 116 and 117 is arranged inside the valve seat inner cylindrical portion 113 .
Each of the second liquid inflow holes 116 and 117 has a circle CP (each nozzle throttle hole 63 is arranged) located in the closing plate 112 centering on the plate center line of the closing plate 112 (cylinder center line of the inner cylindrical portion 113 of the valve seat). (circle with the same radius as the circle CP).
As shown in FIG. 29, each of the second liquid inflow holes 116 and 117 penetrates the closing plate 112 in the plate thickness direction of the closing plate 112 (the direction of the cylinder centerline of the inner cylindrical portion 113 of the valve seat). The plate surface 112A and plate back surface 112B of the closing plate 112 are opened. Each of the second liquid inflow holes 116 and 117 passes through the closing plate 112 inside the valve seat inner cylindrical portion 113 and communicates with the valve seat inner cylindrical portion 113 .

Each of the valve seat fixing grooves 118 to 121 is formed in the valve seat outer cylindrical portion 111 as shown in FIGS.

As shown in FIG. 29, the valve seat fixing groove 118 (first valve seat fixing groove) is arranged at a fixed groove angle with one of the first liquid inflow holes 114 in the circumferential direction (circumferential direction) of the valve seat outer cylindrical portion 111. They are arranged at intervals of θA (first fixed groove angle). The fixed groove angle θA has the same latitude as the head projection angle θA (first head projection angle θA). The valve seat fixing groove 118 is arranged on one side of one of the first liquid inflow holes 114 and is spaced apart from the one of the first liquid inflow holes 114 by a fixed groove angle θA.
As shown in FIGS. 29 and 30, the valve seat fixing groove 119 (second valve seat fixing groove) is formed at a fixed groove angle θA are placed apart. The valve seat fixing groove 119 is arranged on the other side of one of the first liquid inflow holes 114 (on the side opposite to the valve seat fixing groove 118) and is spaced apart from the one of the first liquid inflow holes 114 by a fixed groove angle θA.
Each of the valve seat fixing grooves 118 and 119 has one first liquid inflow hole 114 positioned between the valve seat fixing grooves 118 and 119 in the circumferential direction of the valve seat outer cylindrical portion 111 so that each valve seat is fixed. The grooves 118 and 119 are arranged at an angle (second fixed groove angle) that is twice the fixed groove angle θA.

As shown in FIGS. 29 and 30, the valve seat fixing groove 120 (third valve seat fixing groove) is aligned with the valve seat fixing groove 118 (first valve seat fixing groove) in the circumferential direction of the valve seat outer cylindrical portion 111. , facing the valve seat fixing groove 119 (second valve seat fixing groove) at a fixed groove angle θC (third fixed groove angle). The fixed groove angle θC is the same angle as the head protrusion angle θC. The valve seat fixing groove 120 is located between the valve seat fixing groove 119 (second valve seat fixing groove) and the valve seat fixing groove 118 in the circumferential direction of the valve seat outer cylindrical portion 111 . 119 at an angle of 180 degrees (180°).
As a result, the valve seat fixing groove 120 is arranged on one side (valve seat fixing groove 118 side) of the other first liquid outflow hole 115 with a fixed groove angle θA from the other first liquid outflow hole 115 . .

As shown in FIGS. 29 and 30, the valve seat fixing groove 121 (fourth valve seat fixing groove) extends along the circumferential direction of the valve seat outer cylindrical portion 111 so as to extend along the valve seat fixing grooves 119 and 120 (second and second valve seat fixing grooves). 3 valve seat fixing grooves). The valve seat fixing groove 121 is separated from the valve seat fixing groove 119 (second valve seat fixing groove) by a fixing groove angle seat fixing groove). The valve seat fixing groove 121 forms a valve seat fixing groove 120 (first valve seat fixing groove) between the valve seat fixing groove 118 (first valve seat fixing groove) and the valve seat fixing groove 118 (first valve seat fixing groove) in the circumferential direction of the valve seat outer cylindrical portion 111 . 180 degrees (180°) in the valve seat fixing groove 118 . The valve seat fixing groove 121 is arranged with the other first fluid inflow hole 115 positioned between the valve seat fixing groove 120 (third valve seat fixing groove) and the valve seat fixing groove 120 in the circumferential direction of the valve seat outer cylindrical portion 111 . be.
As a result, the valve seat fixing groove 121 is aligned with the other first liquid inflow hole 115 on the other side (valve seat fixing groove 119 side) of the other first liquid inflow hole 115 at a fixed groove angle θA (first fixed groove angle ).

As shown in FIGS. 28 to 30, the valve seat fixing grooves 118 to 121 are arranged in the direction of the cylinder center line of the valve seat outer cylindrical portion 111 (the plate thickness direction GP of the closing plate). It extends between the other cylinder end 111B (outer cylinder end) of the portion 111 and the closing plate 112 and opens to the other cylinder end 111B of the valve seat outer cylindrical portion 111 . Each of the valve seat fixing grooves 118 to 121 has a groove width in the circumferential direction of the valve seat outer cylindrical portion 111 and opens to the outer periphery (outer peripheral surface) and inner periphery (inner peripheral surface) of the valve seat outer cylindrical portion 111. be done.

The valve seat flat plate 122 is formed in a circular shape (circular flat plate) from an elastic material such as synthetic rubber. As shown in FIGS. 28, 30 and 31, the valve seat flat plate 122 has a plate front surface 122A and a plate back surface 122B in the plate thickness direction. The valve seat plate 122 has respective first liquid introduction holes 123 and 124 and respective second liquid introduction holes 125 and 126 .

Each first liquid introduction hole 123, 124 is formed in the valve seat flat plate 122 as shown in FIGS. The first liquid introduction holes 123 and 124 are arranged at an angle of 180 degrees (180°) between the first liquid introduction holes 123 and 124 in the circumferential direction (circumferential direction) of the valve seat plate 122. be. Each of the first liquid introduction holes 123 and 124 is formed on a circle CR (a circle having the same radius as the circle CR on which each rectifying throttle hole 69 is arranged) located on the valve seat plate 122 with the plate centerline of the valve seat plate 122 as the center. placed in
Each of the first liquid introduction holes 123 and 124 penetrates through the valve seat plate 122 in the plate thickness direction of the valve seat plate 122 and opens to the plate surface 122A and plate back surface 122B of the valve seat plate 122 .

Each of the second liquid introduction holes 125, 126 is formed in the valve seat flat plate 122, as shown in FIGS. The second liquid introduction holes 125 and 126 are arranged at an angle of 180 degrees (180°) between the second liquid introduction holes 125 and 126 in the circumferential direction of the valve seat plate 122 . Each of the second liquid introduction holes 125 and 126 is separated from each of the first liquid introduction holes 123 and 124 by an angle of 90 degrees (90 degrees) in the circumferential direction of the valve seat plate 122 . , 124. Each second liquid introduction hole 125 , 126 is arranged inside each first liquid introduction hole 123 , 124 .
Each of the second liquid introduction holes 125 and 126 is defined by a circle CP (a circle having the same radius as the outer circle CP in which each nozzle throttle hole 63 is arranged) positioned on the valve seat flat plate 122 with the plate centerline of the valve seat plate 122 as the center. placed above.
Each of the second liquid introduction holes 125 and 126 penetrates through the valve seat plate 122 in the plate thickness direction of the valve seat plate 122 and opens to the plate surface 122A and plate back surface 122B of the valve seat plate 122 .

The valve seat flat plate 122 is arranged concentrically with the valve seat outer cylindrical portion 111 and inserted (stored) in the valve seat outer cylindrical portion 111, as shown in FIGS. The valve seat plate 122 is inserted into the valve seat outer cylindrical portion 111 from the other cylindrical end 111B of the valve seat outer cylindrical portion 111 with the plate back surface 122B of the valve seat plate 122 facing the closing plate 112 . The valve seat plate 122 is inserted into the valve seat outer cylindrical portion 111 with the plate outer periphery (plate outer peripheral surface) of the valve seat plate 122 in close contact with the inner periphery (inner peripheral surface) of the valve seat outer cylindrical portion 111 .
The valve seat plate 122 faces the first liquid introduction holes 123 and 124 to the first liquid inflow holes 114 and 115, and the second liquid introduction holes 125 and 126 to the second liquid inflow holes 116 and 117. They are attached to the valve seat outer cylindrical portion 111 so as to face each other. The valve seat flat plate 122 is fixed to the valve seat outer cylindrical portion 111 by bringing the plate back surface 122B of the valve seat plate 122 into close contact with the plate back surface 112B of the closing plate 112 in the valve seat outer cylindrical portion 111 .
As a result, the first liquid introduction holes 123, 124 communicate with the first liquid inflow holes 114, 115, and the second liquid introduction holes 125, 126 communicate with the second liquid inflow holes 116, 117. be done.
A plate surface 122A of the valve seat plate 122 is coated with a lubricant such as grease.

The seal ring 127 is formed in an annular shape with an elastic material such as synthetic rubber. The seal ring 127 is fitted onto the valve seat outer cylindrical portion 111 as shown in FIG. The seal ring 127 is attached to the valve seat outer cylindrical portion 111 in close contact with the outer periphery (outer peripheral surface) of the valve seat outer cylindrical portion 111 .

The seal ring 128 is formed in an annular shape with an elastic material such as synthetic rubber. The seal ring 128 is fitted over the closure plate 112 as shown in FIG. The seal ring 128 is attached to the closure plate 112 in close contact with the outer periphery (peripheral surface) of the closure plate 112 .

The nozzle switching valve 3 (switching valve body 95 and switching valve seat 96) is arranged in the nozzle head body 1 (large diameter outflow hole 23) as shown in FIGS. It is built into the head main body 1 .
The nozzle switching valve 3 is arranged between the valve switching operation body 2 (valve body guide 73) arranged in the nozzle head body 1 and one cylinder end 1A of the nozzle head body 1. 23).

As shown in FIGS. 5 and 32, the switching valve body 95 has the valve body cylindrical portions 98 and 99 and the spring mounting shaft 105 directed toward the valve body guide 73 and the coil spring 74 in the nozzle head main body 1, and is positioned on one side of the cylinder. It is inserted (stored) into the nozzle head main body 1 (the large-diameter outflow hole 23) from the end 1A. The switching valve body 95 is spaced between the plate outer periphery (plate outer peripheral surface) of the valve body flat plate 97 and the hole inner periphery (hole inner peripheral surface) of the large diameter outlet hole 23, and the large diameter outlet hole 23 (nozzle head main body 1 inside). The switching valve body 95 is arranged concentrically with the valve body guide 73 (nozzle head body 1) in the large-diameter outflow hole 23 (inside the nozzle head body 1).

As shown in FIGS. 5 and 32, the switching valve body 95 is arranged such that the spring mounting shaft 105 extends from the other coil end 74B to the other coil end 74B side of the coil spring 74 in the large-diameter outflow hole 23 (inside the nozzle head body 1). , and the other coil end 74B of the coil spring 74 is brought into contact with the back surface 97B of the valve body flat plate 97 .
As a result, the coil spring 74 is installed between the switching valve body 95 and the valve body guide 73, and the coil ends 74A and 74B are brought into contact with the back surface 97B of the valve body flat plate 97 and the plate surface 90A of the circular flat plate 90. placed.

As shown in FIGS. 5 and 32, the switching valve body 95 compresses the coil spring 74 toward the valve body guide 73 side (the circular flat plate 90 side) in the large-diameter outflow hole 23 (inside the nozzle head body 1), and The valve body support projections 88 and 89 are press-fitted into the valve body cylinder portions 98 and 99, and the valve body cylinder portions 98 and 99 (switching valve body 95) are engaged with the valve body support projections 88 and 89 (the valve body guide 73). ).
In the valve body guide 73, the valve body supporting projections 88, 89 are press-fitted into the respective valve body tubular portions 98, 99 to support the switching valve body 95 (the valve body flat plate 97).

As shown in FIG. 32, the switching valve body 95 is connected to the valve body supporting projections 88 and 89 (valve body guide 73) together with the nozzle switching lever 72 and the valve body guide 73. It is rotated (turned) and switched to the mist nozzle position V1 or the nozzle position V2.

At the mist nozzle position V1, as shown in FIG. It is arranged so as to match (position) the first orthogonal line b (vertical straight line) of 1.
At the mist nozzle position V1, the first liquid outflow holes 101 and 102 are arranged so that the hole center line (hole center) of each of the first liquid outflow holes 101 and 102 coincides (positions) with the first orthogonal line b. .
At the mist nozzle position V1, the first liquid outflow holes 101 and 102 are separated by 180 degrees (180 degrees) in the circumferential direction of the nozzle head body 1 (large diameter outflow hole 23). °).
At the mist nozzle position V1, the switching valve body 95 aligns the second liquid outflow holes 103 and 104 (hole center lines of the second liquid outflow holes 103 and 104) with the second orthogonal line c (left and right) of the nozzle head body 1. direction straight line).
At the mist nozzle position V1, each of the second liquid outflow holes 103 and 104 is arranged such that the hole center line (hole center) of each of the second liquid outflow holes 103 and 104 is circumferentially shifted from the second orthogonal line c (first orthogonal line b). placed in the opposite direction. At the mist nozzle position V1, the second liquid outflow holes 103 and 104 are arranged so that the hole center line (hole center) of each of the second liquid outflow holes 103 and 104 does not coincide (position) with the second orthogonal line c. be.

At the mist position V2, the switching valve body 95 aligns the second liquid outflow holes 103 and 104 (hole center lines of the second liquid outflow holes 103 and 104) of the nozzle head main body 1 as shown in FIG. It is arranged so as to match (position) the second orthogonal line c.
At the nozzle position V2, the second liquid outflow holes 103 and 104 are arranged so that the hole center line (hole center) of each of the second liquid outflow holes 103 and 104 coincides (positions) with the second orthogonal line c.
At the nozzle position V2, the second liquid outflow holes 103 and 104 are separated by 180 degrees (180° ).
At the nozzle position V2, the switching valve body 95 moves the first liquid outflow holes 101 and 102 (hole center lines of the first liquid outflow holes 101 and 102) from the first orthogonal line b of the nozzle head body 1 to the circumference. placed in the opposite direction.
At the nozzle position V2, each of the first liquid outflow holes 101 and 102 is arranged such that the hole center line (hole center) of each of the first liquid outflow holes 101 and 102 extends from the first orthogonal line b (second orthogonal line c) in the circumferential direction. placed staggered. At the nozzle position V2, the first liquid outflow holes 101 and 101 are arranged so that the hole center line (hole center) of each of the first liquid outflow holes 101 and 102 does not coincide (position) with the first orthogonal line b. .

As shown in FIGS. 5 and 33, the switching valve seat 96 is formed by connecting the closing plate 112 and the valve seat outer cylindrical portion 111 (valve seat plate 122) to the switching valve body 95 (valve plate plate 97) in the nozzle head body 1. It is inserted (stored) into the nozzle head main body 1 (the large-diameter outflow hole 23) from one cylindrical end 1A.

As shown in FIGS. 5 and 33, the switching valve seat 96 is arranged concentrically with the valve body guide 73 (nozzle head body 1) in the large diameter outflow hole 23 (inside the nozzle head body 1). The switching valve seat 96 has a seal ring 127 in close contact with the hole inner periphery (hole inner peripheral surface) of the large-diameter outflow hole 23, and the closing plate 112 and the valve seat outer cylindrical portion 111 are extended from one cylinder end 1A into the nozzle head main body 1. (Large-diameter outflow hole 23). The switching valve seat 96 is pressed into each of the valve seat fixing grooves 118 to 121 and into each of the head protrusions 19 to 22 of the nozzle head body 1, and the valve body flat plate 97 (switching valve body 95 ) are placed in close contact with the plate surface 97A.
As a result, the switching valve seat 96 is connected to the switching valve body 95 side (valve switching operation body 2 side) of the large diameter outflow hole 23 by means of the seal ring 127 that is in close contact with the hole inner circumference (hole inner peripheral surface) of the large diameter outflow hole 23 . , one side of the cylinder end 1A of the large-diameter outflow hole 23 is liquid-tightly partitioned.
The switching valve seat 96 is non-rotatably attached to the nozzle head body 1 by pressing the head projections 19-22 into the valve seat fixing grooves 118-121.
In the switching valve body 95 , the plate surface 97 A of the valve plate plate 97 is pressed against the plate surface 122 A of the valve seat plate 122 by the spring force of the coil spring 74 .
In the switching valve body 96 , the valve seat inner cylindrical portion 113 extends (protrudes) from the closing plate 112 toward one cylinder end 1</b>A in the cylinder center direction A of the nozzle head body 1 .

As shown in FIG. 33, the switching valve seat 96 is formed by press-fitting the head protrusions 19 to 22 into the valve seat fixing grooves 118 to 121 to form the first liquid introduction holes 123 and 124 and the first liquid inflow holes. 114, 115 (hole center lines of the first liquid introduction holes 123, 124 and hole center lines of the first liquid inflow holes 114, 115) coincide with the first orthogonal line b of the nozzle head body 1 (position) are placed as follows.
Each of the first liquid introduction holes 123 and 124 and each of the first liquid inflow holes 114 and 115 are arranged such that the hole center line of each of the first liquid introduction holes 123 and 124 and the hole center line of each of the first liquid inflow holes 114 and 115 It is arranged so as to match (position) the first orthogonal line b.

As shown in FIG. 33, the switching valve seat 96 is formed by press-fitting the head protrusions 19 to 22 into the valve seat fixing grooves 118 to 121 to form the second liquid introduction holes 125 and 126 and the second liquid inflow holes. 116, 117 (hole center lines of the second liquid introduction holes 125, 126 and hole center lines of the second liquid inflow holes 116, 117) coincide with the second orthogonal line c of the nozzle head body 1 (position) are placed as follows.
Each of the second liquid introduction holes 125 and 126 and each of the second liquid introduction holes 116 and 117 are arranged so that the hole center line of each of the second liquid introduction holes 125 and 126 and the hole center line of each of the second liquid introduction holes 116 and 117 It is arranged so as to match (position) the second orthogonal line b.
At the mist nozzle position V1, the switching valve body 95, as shown in FIG. It communicates with the inflow holes 114 , 115 , and closes the second liquid introduction holes 125 , 126 and the second liquid inflow holes 116 , 117 of the switching valve seat 96 with the flat plate 97 . At the mist nozzle position V1, the second liquid introduction holes 125 and 126 and the second liquid inflow holes 116 and 117 of the switching valve seat 96 are blocked by the flat plate 97 so that the second liquid of the switching valve body 95 flows out. It is cut off from the holes 103 and 104 and is not in communication with the respective second liquid outflow holes 103 and 104 .
At the nozzle position V2, the switching valve body 95, as shown in FIG. It communicates with the holes 116 and 117 , and blocks the first liquid introduction holes 123 and 124 and the first liquid inflow holes 114 and 115 of the switching valve seat 96 with the valve body flat plate 97 . At the nozzle position V2, the first liquid introduction holes 123 and 124 and the first liquid inflow holes 114 and 115 of the switching valve seat 96 are blocked by the valve body flat plate 97 so that the first liquid outflow holes of the switching valve body 95 are closed. 101, 102, and is not in communication with each of the first liquid outflow holes 101, 102.

The nozzle head main body 1 in which the valve switching operation body 2 and the nozzle switching valve 3 are arranged is connected to the injector Y as shown in FIG.
The injector Y is attached to one end 1A of the nozzle head main body 1. As shown in FIG. The injector Y (dispersing ring body 31, nozzle body 33 and straightening ring body 34) is arranged concentrically with the nozzle head body 1 (switching valve seat 96 in the nozzle head body 1). The injector Y directs the other cylinder end 67B (the other rectification outer cylinder end) of the rectifying outer cylindrical portion 67 (rectifying ring body 34) toward the switching valve seat 96 in the nozzle head main body 1, and It is inserted (stored) into the nozzle head main body 1 (large diameter outflow hole 23) from 1A.

As shown in FIG. 5, the injector Y (injector Y incorporated in the connecting ring body 30) includes a rectifying outer cylindrical portion 67 (rectifying ring body 34) and a guide outer cylindrical portion 45 (spraying ring body 31). It is inserted into the large-diameter outflow hole 23 and arranged in the nozzle head body 1 .
In the injector Y, the straightening ring body 34 causes the large diameter outflow of the outer straightening cylindrical portion 67 while abutting the outer periphery (outer peripheral surface) of the outer straightening cylindrical portion 67 against the hole inner periphery (hole inner peripheral surface) of the large-diameter outflow hole 23 . It is arranged in the hole 23 (inside the nozzle head main body 1). The rectifying outer cylindrical portion 67 has the other cylinder end 67B (the other rectifying outer cylinder end) of the rectifying outer cylindrical portion 67 in the large-diameter outflow hole 23 (inside the nozzle head body 1). It is arranged in the nozzle head body 1 in contact with the closing plate 112 (plate surface 112A) of 96 .

In the injector Y, as shown in FIG. 5, the spray ring body 31 is configured such that the seal ring 49 is brought into close contact with the hole inner periphery (hole inner peripheral surface) of the large-diameter outflow hole 23, and the guide outer cylindrical portion 45 is attached to the nozzle head main body. 1 is inserted and arranged. The guide outer cylindrical portion 45 is arranged in the large-diameter outflow hole 23 (inside the nozzle head main body 1) between the straightening outer cylindrical portion 67 and one cylinder end 1A, continuously with the straightening outer cylindrical portion 67. As shown in FIG.
In the injector Y, the spray ring body 31 is attached to the nozzle head body 1 with the flange portion 51 of the spray nozzle plate 46 in contact with one cylindrical end 1A of the nozzle head body 1 .

In the injector Y, as shown in FIG. 5, the atomizing ring body 31 inserts the valve seat inner cylindrical portion 113 (switching valve seat 96) in the nozzle head main body 1 into the guide inner cylindrical portion 47, It is arranged inside the nozzle head main body 1 (the large-diameter outflow hole 23). In the switching valve seat 96 , the other cylinder end 113 B of the valve seat inner cylinder portion 113 is pressed against the other cylinder end 60 B of the nozzle outer cylinder portion 60 by the spring force of the coil spring 74 .
As shown in FIGS. 5 and 34 , the switching valve seat 96 is configured such that the seal ring 126 is brought into close contact with the inner periphery (inner peripheral surface) of the guide inner cylindrical portion 47 and the valve seat inner cylindrical portion 113 is positioned inside the guide inner cylindrical portion 47 . , and the other cylinder end 113B (the other valve seat inner cylinder end) of the valve seat inner cylinder part 113 is inserted into (stored in) the other nozzle outer cylinder part 60 (nozzle body 33) in the guide inner cylinder part 47. is arranged in the nozzle head main body 1 in close contact with the cylinder end 60B (the other nozzle outer cylinder end).
The valve seat inner cylindrical portion 113 and the guide inner cylindrical portion 47 are arranged in the valve seat inner cylindrical portion 113 by means of a seal ring 126 that is in close contact with the inner circumference (inner peripheral surface) of the guide inner cylindrical portion 47. The inside of the cylindrical portion 67 is sealed (sealed).
5 and 34, the mist throttle holes 54 (mist flow paths .epsilon.1, .epsilon.2) of the mist nozzle body 32 are divided into the outer flow path .lambda.1, the rectifying throttle holes 69, and the rectifying outer cylindrical portion 67. and the valve seat inner cylindrical portion 113, the first liquid inlet holes 114, 115 and the first liquid inlet holes 123, 124 of the switching valve seat 96 are communicated with each other.
As shown in FIGS. 5 and 34, each nozzle throttle hole 63 of the nozzle body 33 passes through the inner flow path λ2 inside the valve seat inner cylindrical portion 113, and the second liquid inflow holes 116, 117 of the switching valve seat 96 and It communicates with each of the second liquid introduction holes 125 and 126 .

When the injector Y is attached to one end 1A of the nozzle head body 1, the injector Y is fixed to the nozzle head body 1 by a connecting ring body 30 incorporating the injector Y, as shown in FIG. be.
As shown in FIG. 5, the connecting ring body 30 has the other cylindrical end 36B side of the connecting cylinder main body 36 externally fitted to the one cylindrical end 1A side of the nozzle head main body 1, and the connecting female screw 39 is threaded on one side. It is attached to the nozzle head main body 1 by screwing onto the cylinder end 1A side.
As a result, the injector Y incorporated in the connecting cylinder main body 36 (connecting ring body 30) is fixed to the nozzle head main body 1 by screwing the connecting female screw 39 on one cylinder end 1A side.

In the cleaning gun device X, the valve switching operation body 2 switches the nozzle switching valve 3 to the mist nozzle position V1 or the nozzle position V1 by manual operation, as shown in FIGS.

As shown in FIGS. 23 and 24, the valve switching operation body 2 switches the nozzle switching lever 72 from the nozzle position V2 to the mist nozzle position V1 by manual operation (rotation on one side).
When the nozzle switching lever 72 is set to the mist nozzle position V1 by manual operation, the nozzle switching valve 3 communicates with the mist nozzle body 32 and the outflow passage 15 as shown in FIG. It is switched to the mist nozzle position V1 that communicates with the passage 15 .
At the mist nozzle position V1, the switching valve body 95, as shown in FIG. It communicates with the liquid inflow holes 114 , 115 , and blocks the second liquid introduction holes 125 , 126 and the second liquid inflow holes 116 , 117 of the switching valve seat 96 with the flat plate 97 .
At the mist nozzle position V1, each mist throttle hole 54 (each mist flow path ε1, ε2) of the mist nozzle body 32 is, as shown in FIG. , liquid introduction path σ, first liquid inflow holes 114, 115 and first liquid introduction holes 123, 124 of the switching valve seat 96, the outflow path 15 (the large diameter outflow hole 23 on the side of the lever housing wall 17 from the switching valve body 95). , and an outflow passage having a small diameter outflow hole 24).
As a result, the nozzle switching valve 3 has the mist nozzle body 32 (each of the mist flow paths ε1 and ε2) and the outflow path 15 (the large-diameter outflow hole 23 and the small-diameter outflow hole 24 closer to the lever housing wall 17 than the switching valve body 95). and the mist nozzle body 32 and the outflow passage 15 are connected to each other.

As shown in FIGS. 23 and 24 , the valve switching operation body 2 switches the nozzle switching lever 72 from the mist nozzle position V1 to the nozzle position V2 by manual operation (the other turning operation).
When the nozzle switching lever 72 is set to the mist nozzle position V2 by manual operation, the nozzle switching valve 3 communicates with the nozzle body 33 and the outflow path 15 as shown in FIG. is switched to the nozzle position V2 communicating with the .
At the nozzle position V2, the switching valve body 95, as shown in FIG. It communicates with the inflow holes 116 and 117 , and blocks the first liquid introduction holes 123 and 124 and the first liquid inflow holes 114 and 115 of the switching valve seat 96 with the flat plate 97 .
At the nozzle position V2, each nozzle throttle hole 63 of the nozzle body 33, as shown in FIG. , 126 to the outflow passage 15 (outflow passage having the large diameter outflow hole 23 and the small diameter outflow hole 24 closer to the lever housing wall 17 than the switching valve body 95).
As a result, the nozzle switching valve 3 has a nozzle body 33 (each nozzle throttle hole 63) and an outflow path 15 (an outflow path having a large-diameter outflow hole 23 on the lever housing wall 17 side of the switching valve body 95 and a small-diameter outflow hole 24). ) and communicates the nozzle body 33 and the outflow passage 15, and is switched to the nozzle position V2.

As shown in FIGS. 1 to 4 and 35, the storage container 4 is formed in a tubular shape (cylindrical shape) with one tubular end open and the other tubular end closed. The storage container 4 stores the detergent liquid (liquid detergent).

As shown in FIGS. 1 to 4 and 35 , the storage container 4 includes a cylindrical body portion 201 (cylindrical body portion), a bottom portion 202 closing one end of the body portion, and the other side of the body portion 201 . has a head 203 which is continuous with the opening of the . The head portion 203 (cylindrical head portion) is formed in a cylindrical shape, communicates with the trunk portion 201 , and opens to the outside (outside) of the trunk portion 201 . The head 203 has a male threaded portion 204 , and the male threaded portion 204 is formed on the outer circumference (outer peripheral surface) of the head 203 . In the storage container, the body portion 201, the bottom portion 202 and the head portion 203) are integrally formed of synthetic resin.
The storage container 4 (detergent solution storage container) is supplied with the detergent solution WC (liquid detergent) from the head cylindrical end 203A of the head portion 203 (the open end of the storage container 4). detergent).

As shown in FIGS. 1 to 4 and 35, the lid body 5 closes the tube end opening of the storage container 4 (head tube end 203A of the head 203) to close the storage container 4 (head 203). can be detachably attached to the The lid 5 is made of synthetic resin.
As shown in FIGS. 36 and 37, the lid body 5 includes a lid outer cylindrical portion 209, a lid outer closing plate 210, a lid inner cylindrical portion 211, a lid inner closing plate 212, a gun mounting cylindrical portion 213, a positioning shaft 214, a plurality of It has (four) gun mounting cylindrical portions 215A to 215D, a plurality (four) of opening/closing member supporting projections 216, and a piston housing cylindrical portion 217.
The lid body 5 has a piston shaft 218 , a piston biasing spring 219 , a detergent liquid outflow path 220 and an air inflow hole 221 .

The lid outer cylindrical portion 209 is formed of synthetic resin in a cylindrical shape (cylindrical shape). As shown in FIGS. 36 and 37 , the lid outer cylindrical portion 209 has a female screw portion 225 on the inner periphery (inner peripheral surface) of the lid outer cylindrical portion 209 .

As shown in FIGS. 36 and 37, the lid outer blocking plate 210 is made of synthetic resin and formed into a circular flat plate (annular flat plate), and one end (one outer end) of the lid outer cylindrical portion 209 is closed. occlude.
The lid outer closing plate 210 has a plate front surface 210A and a plate back surface 210B in the plate thickness direction. The lid outer closing plate 210 is arranged concentrically with the lid outer cylindrical portion 209 . The lid outer closing plate 210 contacts one cylindrical end (one outer cylindrical end) of the lid outer cylindrical portion 209 by contacting the back surface 210B of the lid outer blocking plate 210 with one cylindrical end of the lid outer cylindrical portion 209. occlude. The lid outer closing plate 210 is formed integrally with the lid outer cylindrical portion 209 .

The lid inner cylindrical portion 211 is formed of synthetic resin in a cylindrical shape (cylindrical shape). The lid inner cylindrical portion 211 is arranged concentrically with the lid outer cylindrical portion 209, as shown in FIGS. The lid inner cylindrical portion 211 is arranged inside the lid outer cylindrical portion 209 and formed integrally with the lid outer closing plate 210 . The lid inner cylindrical portion 211 penetrates the lid outer closing plate 210 in the direction W of the cylinder center line w of the lid outer cylindrical portion 209 (lid body 5), and one cylinder end (one inner cylinder end) is connected to the lid. It is arranged flush with the back surface 210B of the outer closing plate and opened (communicated) in the lid outer cylindrical portion 209 . The lid inner cylindrical portion 211 has the other cylinder end side (the other inner cylinder end side) of the lid inner cylinder portion 211 in the direction W of the cylinder center line w of the lid outer cylinder portion 209 . It is arranged so as to protrude from 210A on the side opposite to the lid outer cylindrical portion 209 .

As shown in FIGS. 36 and 37, the lid inner closing plate 212 is made of synthetic resin and formed into a circular flat plate, and closes the other cylindrical end (the other inner cylindrical end) of the lid inner cylindrical portion 211 .
The lid inner closing plate 212 has a plate front surface 212A and a plate back surface 212B in the plate thickness direction. The lid inner closing plate 212 is arranged concentrically with the lid inner cylindrical portion 211 . The lid inner closing plate 212 contacts the other cylindrical end (the other inner cylindrical end) of the lid inner cylindrical portion 211 with the plate back surface 212B of the lid inner closing plate 212, and presses the one cylindrical end of the lid inner cylindrical portion 211. occlude. The lid inner closing plate 212 is formed integrally with the lid inner cylindrical portion 211 .

The gun mounting cylindrical portion 213 is formed in a cylindrical shape (cylindrical shape) from synthetic resin. The gun mounting cylindrical portion 213 is arranged concentrically with the lid outer cylindrical portion 209 and the lid inner cylindrical portion 211, as shown in FIGS. The gun mounting cylinder 213 is located between the lid outer cylinder 209 and the lid inner cylinder 211 .
The gun mounting cylindrical portion 213 is arranged concentrically with the lid inner cylindrical portion 211 with a space between the inner periphery (inner peripheral surface) of the gun mounting cylindrical portion 213 and the outer periphery (outer peripheral surface) of the lid inner cylindrical portion 211 . be. The gun mounting cylindrical portion 213 is arranged concentrically with the lid outer cylindrical portion 209 with a gap between the outer periphery (outer peripheral surface) of the gun mounting cylindrical portion 213 and the inner periphery (inner peripheral surface) of the lid outer cylindrical portion 209 . be. The gun mounting cylindrical portion 213 contacts the plate surface 210A of the lid outer closing plate 210 with one end (one gun cylinder portion) of the gun mounting cylindrical portion 213, and the lid outer cylindrical portion 209 (the lid inner cylindrical portion 211 ) in the direction W of the cylinder center line w, and is arranged to extend between the lid outer closure plate 210 and the lid inner closure plate 212 . The gun mounting cylindrical portion 213 is formed integrally with the cover outer closing plate 210 .

The gun mounting cylindrical portion 213 has a plurality (a pair of) of air introduction grooves 226 as shown in FIGS. Each air introduction groove 226 is formed in the gun mounting cylindrical portion 213 . The air introduction grooves 226 are arranged at an angle of 180 degrees (180°) between the air introduction grooves 226 in the circumferential direction of the lid inner cylindrical portion 211 (the lid outer cylindrical portion 209). Each air introduction groove 226 is arranged in the direction W of the cylinder center line w of the lid inner cylindrical portion 211 so that the plate surface 210A of the lid outer closing plate 210 and the other cylinder end 213B of the gun mounting cylinder portion 213 (the other gun cylinder end) is arranged to extend between Each air introduction groove 226 has a groove width in the circumferential direction of the gun mounting cylindrical portion 213, and is opened to the outer periphery (outer peripheral surface) and inner periphery (inner peripheral surface) of the gun mounting cylindrical portion 213. The introduction groove 226 extends from the plate surface 210A of the lid outer closure plate 210 in the direction W of the cylinder center line w of the lid inner cylindrical portion 211 and opens to the other cylinder end 213B of the gun mounting cylinder portion 213. .

The positioning shaft 214 is made of synthetic resin and formed into a cylindrical shape (circular shaft). The positioning shaft 214 is arranged on the lid inner closing plate 212 as shown in FIGS. 36 and 37 . The positioning shaft 214 is arranged concentrically with the lid inner closing plate 212 (lid inner cylindrical portion 211). The positioning shaft 214 has one shaft end (one positioning shaft end) of the positioning shaft 214 in contact with the plate surface 212A of the lid inner closing plate 212, and the direction W of the tube center line w of the lid outer cylindrical portion 209 (cover In the plate thickness direction of the inner closing plate 212 ), it projects from the plate surface 212</b>A of the lid inner closing plate 212 to the side opposite to the lid outer cylindrical portion 209 .
The positioning shaft 214 has a positioning shaft groove 228 , and the positioning shaft groove 228 is formed in the positioning shaft 214 . The positioning shaft groove 228 has a groove width in the circumferential direction of the positioning shaft 214 and extends between each shaft end (each positioning shaft end) in the axial direction of the positioning shaft 214 . The positioning shaft groove 228 passes through the positioning shaft 214 in the radial direction of the positioning shaft 228 and opens to the outer periphery (outer peripheral surface) of the positioning shaft 214 and one shaft end 214A of the positioning shaft 214 .

Each of the gun mounting cylindrical portions 215A to 215D is made of synthetic resin and formed in a cylindrical shape (cylindrical shape). As shown in FIGS. 36 and 37, the gun mounting cylindrical portions 215A to 215D are arranged between the outer periphery (outer peripheral surface) of the lid inner cylindrical portion 211 and the inner periphery (inner peripheral surface) of the gun mounting cylindrical portion 213. be. Each of the gun mounting cylindrical portions 215A to 215D is located between the lid inner cylindrical portion 211 and the gun mounting cylindrical portion 213 with the cylinder center line w of the lid outer cylindrical portion 209 (cover inner cylindrical portion 211) as the center. is placed on the circle CT located at . The gun mounting cylinders 215A and 215B are arranged at an angle of 180 degrees (180°) between the gun mounting cylinders 215A and 215B in the circumferential direction of the lid inner cylinder 211 . The gun mounting cylinders 215C and 215D are arranged at an angle of 180 degrees (180°) between the gun mounting cylinders 215C and 215D in the circumferential direction of the lid inner cylinder 211 . The gun mounting cylindrical portions 215A and 215D are separated by a cylinder arrangement angle θα (θα is an angle of 15° or more and less than 80°) between the gun mounting cylindrical portions 215A and 215D in the circumferential direction of the lid inner cylindrical portion 211. placed.
The gun mounting cylindrical portions 215A to 215D are arranged with air introduction grooves 226 positioned between the gun mounting cylindrical portions 215A and 215D and between the gun mounting cylindrical portions 215C and 215B.

The gun mounting cylindrical portions 215A to 215D are arranged so that the cylinder center line of each gun mounting cylindrical portion 215A to 215D faces the direction W of the cylinder center line w of the cover outer cylindrical portion 209. As shown in FIG. Each of the gun mounting cylindrical portions 215A to 215D has one cylindrical end (one gun cylindrical end) of each of the gun mounting cylindrical portions 215A to 215D in contact with the plate surface 210A of the lid outer closing plate 210 so that the lid outer closing plate 210 from the plate surface 210A of the gun mounting cylindrical portion 213 and the cover outer closing plate 210. As shown in FIG. Each of the gun mounting cylindrical portions 215A to 215D is arranged so that the other cylindrical end 215b (the other gun mounting cylindrical end) of each of the gun mounting cylindrical portions 215A to 215D is flush with the other cylindrical end 213B of the gun mounting cylindrical portion 213. be. Each of the gun mounting cylindrical portions 215A to 215D is adjacent to the inner periphery (inner peripheral surface) of the gun mounting cylindrical portion 213 and formed integrally with the gun mounting cylindrical portion 213 and the cover outer closing plate 210. As shown in FIG.

Each opening/closing body support protrusion 216 is formed of synthetic resin. Each opening/closing body support projection 216 is formed integrally with the lid inner closing plate 212 as shown in FIGS. 36 and 37 . Each of the opening/closing member supporting protrusions 216 is arranged on a circle located on the lid inner closing plate 212 centered on the tube center line w of the lid outer cylindrical portion 209 (the lid inner cylindrical portion 211). The opening/closing body support projections 216 are arranged at an angle of 60 degrees (60°) between the opening/closing body support projections 216 in the circumferential direction of the lid inner cylindrical portion 211 (lid inner closing plate 212). Each opening/closing body support projection 216 has one projection end in contact with the plate surface 212A of the lid inner closing plate 212 and protrudes in the same direction as the positioning shaft 214 in the direction W of the cylinder center line w of the lid outer cylindrical portion 209. be done.

As shown in FIGS. 36 and 37, the piston housing cylindrical portion 217 is formed of synthetic resin in a cylindrical shape (cylindrical shape) and arranged inside the lid inner cylindrical portion 211 . The piston housing cylindrical portion 217 is arranged between the inner periphery (inner peripheral surface) of the lid inner cylindrical portion 211 and the positioning shaft 214 . The piston housing cylindrical portion 217 is arranged on a circle CW located on the lid inner closing plate 212 with the cylinder center line w of the lid inner cylindrical portion 211 as the center. The piston housing cylindrical portion 217 is arranged so that the cylinder center line of the piston housing cylinder portion 217 faces the direction W of the cylinder center line w of the lid inner cylindrical portion 211 . The piston housing cylindrical portion 217 has one cylindrical end (one piston cylindrical end) of the piston housing cylindrical portion 217 in contact with the plate back surface 212B of the lid inner closing plate 212, and the lid is opened from the plate back surface 212B of the lid inner closing plate 212. It extends to the other cylindrical end 209B side of the outer cylindrical portion 209 (one outer cylindrical end side). The piston housing cylindrical portion 217 protrudes from the plate back surface 212B of the lid inner closure plate 212 in the direction W of the cylinder center line w of the lid inner cylinder portion 211 (the lid outer cylinder portion 209), and extends from the plate back surface of the lid outer closure plate 210. 212B and the other cylindrical end 209B of the lid outer cylindrical portion 209. As shown in FIG. The piston housing cylindrical portion 217 penetrates the lid inner closing plate 212 in the direction W of the cylinder center line w of the lid inner cylindrical portion 211 (the lid outer cylindrical portion 209) (the plate thickness direction of the lid inner closing plate 212). , the plate surface 212A of the lid inner closing plate 212 is opened. The piston housing cylindrical portion 217 is formed integrally with the lid inner closing plate 212 .

The piston housing cylindrical portion 217 has a cylinder closing plate 229 and a tube insertion hole 230, as shown in FIGS. The cylinder closing plate 229 closes the other cylinder end (the other piston cylinder end) of the piston housing cylinder part 217 and is formed integrally with the piston housing cylinder part 217 . A tube insertion hole 230 is formed in the cylinder closing plate 229 . The tube insertion hole 230 penetrates the cylinder closing plate 229 in the direction of the cylinder centerline of the piston housing cylinder 217 and opens into the piston housing cylinder 217 .

The piston shaft 218 is made of synthetic resin (a cylindrical shaft). The piston shaft 218 has a flange projection 231, a seal groove 232, a pipe mounting hole 233 and a seal ring 234, as shown in FIG.

The flange projection 231 is made of synthetic resin. As shown in FIG. 38, the flange projection 231 is arranged on one shaft end 218A side (one pistol shaft end side) of the piston shaft 218 and formed integrally with the piston shaft 218 . The flange projection 231 is arranged over the entire outer circumference (entire outer peripheral surface) of the piston shaft 218 in the circumferential direction of the piston shaft 218 . The flange protrusion 231 protrudes radially outward of the piston shaft 218 from the outer periphery (outer peripheral surface) of the piston shaft 218 .

The seal groove 232 is arranged on one shaft end 218A side of the piston shaft 218, as shown in FIG. The seal groove 232 is arranged concentrically with the piston shaft 218 and formed in an annular shape (annular groove). The seal groove 232 has a groove depth in the direction Y of the shaft centerline y of the piston shaft 218 and opens at one shaft end 218A of the piston shaft 218 .

A tube mounting hole 233 is formed in the piston shaft 218 as shown in FIG. The tube mounting hole 233 is arranged concentrically with the piston axis 218 . The tube mounting hole 233 has a piston step 235 spaced from one shaft end 218A of the piston shaft 218 and the other shaft end 218B of the piston shaft 218 (the other piston shaft ends). The pipe mounting hole 233 extends from the piston step 235 to the other shaft end 218B of the piston shaft 218 in the direction Y of the shaft centerline y of the piston shaft 218, and opens at the other shaft end 218B of the piston shaft 218. be.

The seal ring 234 is formed in an annular shape with an elastic material such as synthetic rubber. The seal ring 234 is inserted into the seal groove 232 and attached (arranged) to the piston shaft 218, as shown in FIG. The seal ring 234 is arranged to protrude from one shaft end 218A of the piston shaft 218 in the direction Y of the shaft centerline y of the piston shaft 218 .

The piston biasing spring 219 is, for example, a coil spring, as shown in FIG.

The detergent liquid outflow path 220 is, for example, a detergent liquid outflow hole (hereinafter referred to as "detergent liquid outflow hole 220"). The detergent liquid outflow hole 220 is arranged in the lid 5 as shown in FIG. A detergent liquid outlet hole 220 is formed in the piston shaft 218 as shown in FIG. The detergent liquid outflow hole 220 is arranged concentrically with the piston axis 218 . The detergent liquid outflow hole 220 penetrates the piston shaft 218 between the piston step 235 and one shaft end 218A in the direction Y of the axial centerline y of the piston shaft 218, The tube mounting hole 233 is opened. The detergent solution outflow hole 220 (detergent solution outflow path) is reduced in diameter from the pipe mounting hole 233 with a piston step 235 in the direction Y of the axial center line y of the piston shaft 218, and extends along one axis of the piston shaft 218. It is communicated with the tube mounting hole 233 through the end 218A side.
The detergent liquid outflow hole 220 is gradually reduced in diameter from the piston step 235 (pipe mounting hole 233 ) toward one shaft end 218 A of the piston shaft 218 , and the one shaft end 218 A of the piston shaft 218 and the pipe mounting hole 233 are gradually reduced in diameter. is opened to

The air inlet holes 221 are formed in the lid inner closing plate 212 as shown in FIGS. 36 and 37 . The air inlet holes 221 are arranged at intervals of 180 degrees (180°) in the piston housing cylindrical portion 217 in the circumferential direction of the lid inner cylindrical portion 211 . The air inlet hole 221 is arranged between the positioning shaft 214 and the inner periphery (inner peripheral surface) of the lid inner cylindrical portion 211 . The air inflow hole 221 penetrates the lid inner closure plate 212 in the direction W of the cylinder center line w of the lid inner cylindrical portion 211 (the plate thickness direction of the lid inner closure plate 212). Openings are provided on the front surface 212A and the plate back surface 212B. The air inflow hole 221 passes through the lid inner closing plate 212 and communicates with the lid inner cylindrical portion 211 (the lid outer cylindrical portion 209).

As shown in FIGS. 35 and 44, the piston shaft 218 of the lid body 5 has the other shaft end 218B of the piston shaft 218 directed toward the piston housing cylindrical portion 217 (the plate surface 212A of the lid inner closing plate 212). It is inserted into the piston housing cylindrical portion 217 from the cylinder opening end 217A that opens to the lid inner closing plate 212 . The other shaft end 218B side of the piston shaft 218 is housed in the piston housing cylindrical portion 217 from the cylinder opening end 219A. The piston shaft 218 is arranged in the piston housing cylindrical portion 217 with the flange projection 231 in slidable contact with the inner circumference (inner peripheral surface) of the piston housing cylindrical portion 217 . The piston shaft 218 is arranged concentrically with the piston housing cylindrical portion 217 .

The piston biasing spring 219 is arranged in the piston housing cylindrical portion 217 as shown in FIGS. 35 and 44 . The piston biasing spring 219 is fitted onto the piston shaft 218 and arranged concentrically with the piston shaft 218 . A piston biasing spring 219 (coil spring) is installed between the cylinder closing plate 229 and the flange projection 231 of the piston shaft 218 in the piston housing cylindrical portion 217 . The piston biasing spring 219 is housed in the piston housing cylinder 217 with one spring end in contact with the cylinder closing plate 229 and the other spring end in contact with the flange projection 231 .
As a result, the piston shaft 218 moves the one shaft end 218A side of the piston shaft 218 and the seal ring 234 to the cylinder opening end 219A (plate surface of the lid inner closing plate 212) by the spring force (biasing force) of the piston biasing spring 219. 212A).

As shown in FIG. 35 , the lid body 5 has a plate rear surface 212B of the lid inner closure plate 212 (the plate rear surface 210B of the lid outer closure plate 210 and the other cylinder end 217B of the piston storage cylindrical portion 217) on the head of the storage container 4. It is arranged toward the tubular end 203A (head portion 203). The lid body 5 is attached to the storage container 4 by fitting the lid outer cylindrical portion 209 onto the head portion 203 from the other cylindrical end 209B of the lid outer cylindrical portion 209 . The lid body 5 has the female threaded portion 225 of the lid outer cylindrical portion 209 screwed to the male threaded portion 204 of the head portion 203, and the lid outer closing plate 210 (plate back surface 210B) is attached to the head opening end 203A of the head portion 203. closes the cylinder opening end of the storage container 4.
Thereby, the lid 5 is attached to the storage container 4 (the head 203).

When the lid 5 is attached to the storage container 4, the piston housing cylindrical portion 217 and the piston shaft 218 are arranged inside the storage container 4 as shown in FIG.
When the lid 5 is attached to the storage container 4, the pipe mounting hole 233 of the piston shaft 218, the detergent solution outflow hole 220 (detergent solution outflow path), and the air inflow hole 221 are located inside the storage container 4 as shown in FIG. is communicated with.

The detergent liquid outflow tube 6 is made of synthetic resin, for example. The detergent liquid outflow tube 6 is arranged inside the storage container 4 as shown in FIGS. 4 and 35 . The detergent liquid outflow tube 6 is arranged by inserting one tube end 6A side of the detergent liquid outflow tube 6 into the tube mounting hole 233 from the other shaft end 218B of the piston shaft 218 . As shown in FIGS. 4, 35 and 54, the detergent outflow pipe 6 is arranged such that one pipe end 6A of the detergent outflow pipe 6 is in close contact with the piston step 235 of the piston shaft 218. As shown in FIG. The detergent liquid outflow pipe 6 is arranged such that the other pipe end 6B side of the detergent liquid outflow pipe 6 is immersed in the detergent liquid WC (liquid detergent) stored in the storage container 4 .
As a result, the detergent liquid outflow tube 6 connects one end 6A of the detergent liquid outflow tube 6 to the detergent liquid outflow hole 220 (detergent liquid outflow path), and connects the other tube end 6B side to the detergent liquid WC (liquid detergent liquid). detergent) and placed in the storage container 4 .

As shown in FIGS. 39 to 41, the opening/closing member 7 includes an opening/closing valve plate 251, an opening/closing member mounting hole 252, a first detergent liquid circulation hole 253, a second detergent liquid circulation hole 254, a third detergent liquid circulation hole 255, and an inner cylindrical projection 256 .

The on-off valve plate 251 is made of synthetic resin and formed in a circular shape (a circular flat plate). As shown in FIGS. 39 to 41, the on-off valve plate 251 has a plate front surface 251A and a plate back surface 251B in the plate thickness direction TA.
The on-off valve plate 251 has a diameter (peripheral diameter) larger than the outer diameter (peripheral diameter) of the lid inner cylindrical portion 211 (lid body 5 ) and smaller than the inner diameter (inner peripheral diameter) of the lid outer cylindrical portion 209 .

The opening/closing member mounting hole 252 is a circular hole formed in the opening/closing valve plate 252, as shown in FIGS. It is arranged concentrically with the on-off valve plate 251 . The opening/closing body mounting hole 252 passes through the opening/closing valve plate 251 in the plate thickness direction TA of the opening/closing valve plate 252 and is opened to the plate front surface 251A and the plate rear surface 251B of the opening/closing valve plate 251 .

As shown in FIGS. 39 to 41, the first to third detergent liquid circulation holes 253, 254, 255 are circular holes formed in the on-off valve plate 252. As shown in FIGS. As shown in FIG. 40, the first to third detergent liquid circulation holes 253 to 255 are arranged in a circle CW (piston housing cylindrical portion 217) positioned on the on-off valve plate 251 with the plate center line ap of the on-off valve plate 251 as the center. (circle with the same radius as the circle CW to be arranged). The first to third detergent liquid circulation holes 253 to 255 are arranged between the outer circumference (outer peripheral surface) of the on-off valve plate 251 and the opening/closing body mounting hole 252 in the radial direction of the on-off valve plate 251 .

As shown in FIGS. 39 to 41, the first detergent liquid circulation hole 253 is formed with a hole diameter different from that of the second and third detergent liquid circulation holes 254 and 255 . As shown in FIGS. 39 to 41, the second detergent liquid circulation hole 254 is formed with a hole diameter different from that of the first and third detergent liquid circulation holes 253 and 255. As shown in FIGS. The third detergent liquid circulation hole 255 is formed with a hole diameter different from that of the first and second detergent liquid circulation holes 253 and 254 .
The hole diameter of the first detergent liquid circulation hole 253 is smaller than that of the second and third detergent liquid circulation holes 254 and 255, and the hole diameter of the second detergent liquid circulation hole 254 is smaller than that of the third detergent liquid circulation hole 255. (hole diameter of first detergent solution circulation hole 253<hole diameter of second detergent solution circulation hole 254<hole diameter of third detergent solution circulation hole 255).

As shown in FIGS. 39 to 41, the first detergent liquid circulation hole 253 passes through the on-off valve plate 251 (the opening/closing body 7) in the plate thickness direction TA (the direction of the plate center line ap) of the on-off valve plate 251. As a result, the plate front surface 251A and the plate rear surface 251B of the on-off valve plate 251 are opened.

As shown in FIGS. 39 to 41, the second detergent liquid circulation hole 254 is arranged between the first and third detergent liquid circulation holes 253, 255 in the circumferential direction of the on-off valve plate 251. As shown in FIGS. As shown in FIG. 41, the second detergent liquid circulation holes 254 are arranged at a circulation hole angle θW from the first detergent liquid circulation holes 253 in the circumferential direction of the on-off valve plate 251 . The second detergent liquid circulation hole 254 penetrates the on-off valve plate 251 (the opening/closing body 7) in the plate thickness direction TA of the on-off valve plate 251, and is opened on the plate surface 251A and the plate back surface 251B of the on-off valve plate 251. be.

As shown in FIGS. 39 to 41, the third detergent liquid circulation hole 255 is arranged at a circulation hole angle θW from the second detergent liquid circulation hole 254 in the circumferential direction of the on-off valve plate 251 . As shown in FIG. 41, the third detergent solution circulation hole 255 is located between the second detergent solution circulation hole 254 and the first detergent solution circulation hole 253 in the circumferential direction of the on-off valve plate 251, and the third 1 The detergent solution distribution holes 253 are arranged at an angle (2×θW) that is twice the distribution hole angle θW.
The third detergent liquid circulation hole 255 penetrates the on-off valve plate 251 (the opening/closing body 7) in the plate thickness direction TA of the on-off valve plate 251, and opens on the plate surface 251A and the plate back surface 251B of the on-off valve plate 251. be.

The inner cylindrical projection 256 is made of synthetic resin and formed in a cylindrical shape (cylindrical shape). The inner cylindrical projection 256 is arranged concentrically with the on-off valve plate 251, as shown in FIGS. The inner cylindrical projection 256 is arranged on the outer peripheral side (peripheral surface side) of the on-off valve plate 251 between the outer periphery (outer peripheral surface) of the on-off valve plate 251 and the first to third detergent liquid flow holes 253 to 255 . The inner cylindrical projection 256 is arranged on the back surface 251 side of the on-off valve plate 251 . The inner cylindrical projection 256 has one cylindrical end (one cylindrical projection end) of the inner cylindrical projection 256 in contact with the on-off valve plate 251 and the on-off valve plate 251 in the plate thickness direction TA of the on-off valve plate 251 . It is arranged so as to protrude from the plate back surface 251B. The inner cylindrical projection 256 is formed integrally with the on-off valve plate 251 .

The inner cylindrical projection 256 has an air flow groove 257 as shown in FIG. An air flow groove 257 is formed in the inner cylindrical projection 256 . The air circulation groove 257 is formed in the direction of the cylinder center line of the inner cylindrical projection 256 (the plate thickness direction TA of the on-off valve plate 251), the plate back surface 251B of the on-off valve plate 251 and the other cylindrical end 256B of the inner cylindrical projection 256 ( the other cylindrical protruding end). The air circulation groove 257 has a groove width in the circumferential direction of the inner cylindrical projection 256 and opens on the outer circumference (outer peripheral surface) and the inner circumference (inner peripheral surface) of the inner cylindrical projection 256 . The air circulation groove 257 extends between the plate back surface 251B of the on-off valve plate 251 and the other cylindrical end 256B of the inner cylindrical projection 256, and opens at the other cylindrical end 256B of the inner cylindrical projection 256.

As shown in FIGS. 39 to 42, the opening/closing operation body 8 includes a plurality (pair) of first positioning grooves 261 and 262, a plurality (pair) of second positioning grooves 263 and 264, and a plurality (pair) of third positioning grooves. It has grooves 265 and 266 , a plurality (a pair of) of fourth positioning grooves 267 and 268 , a positioning plate 269 and an opening/closing operation lever 270 .

The first positioning grooves 261 and 262 are formed in the opening/closing valve plate 251 (the opening/closing body 7) as shown in FIGS.
One of the first positioning grooves 261 is arranged between the first and third detergent liquid circulation holes 253 and 255 in the circumferential direction of the on-off valve plate 251, as shown in FIG. One of the first positioning grooves 261 has a groove angle θW (the hole angle θW between the first to third detergent solution flow holes 253 to 255 and the same angle).
The other first positioning groove 262 is separated from the one first positioning groove 261 by an angle of 180 degrees (180°) in the circumferential direction of the on-off valve plate 251, and is positioned between the one first positioning groove 261 and the third detergent. It is arranged between the liquid flow holes 255 .
Each of the first positioning grooves 261 and 262 is formed in the on-off valve plate 251 adjacent to the inner circumference (inner peripheral surface) of the opening-and-closing body mounting hole 252 . Each of the first positioning grooves 261 and 262 passes through the on-off valve plate 251 in the plate thickness direction TA of the on-off valve plate 251 and opens on the plate surface 251A and the plate back surface 251B of the on-off valve plate 251 . Each of the first positioning grooves 261 and 262 extends from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 in the radially outer direction of the switching valve plate 251. is formed with Each of the first positioning grooves 261 and 262 is recessed in an arc shape from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 . Each of the first positioning grooves 261 and 262 opens to the inner periphery (inner peripheral surface) of the opening/closing member mounting hole 252 and communicates with the opening/closing member mounting hole 252 . Each first positioning groove 261, 262 has an arcuate groove bottom.

As shown in FIGS. 39 to 41, the second positioning grooves 263 and 264 have the same groove shape as the first positioning grooves 261 and 262, and are formed in the opening/closing valve plate 251 (the opening/closing body 7). .
One of the second positioning grooves 263 is arranged between the one of the first positioning grooves 261 and the second detergent liquid circulation holes 254 in the circumferential direction of the on-off valve plate 251, as shown in FIG. On the other hand, the second positioning groove 263 is arranged at a groove angle θW from the first positioning groove 261 and at a groove angle θW from the second detergent liquid circulation hole 254 in the circumferential direction of the on-off valve plate 251 .
The other second positioning groove 264 is arranged between the first positioning grooves 261 and 262 in the circumferential direction of the on-off valve plate 251 . The other second positioning groove 262 is arranged at an angle of 180 degrees (180°) from the one second positioning groove 263 in the circumferential direction of the on-off valve plate 251 .
As a result, each of the second positioning grooves 263 and 264 is a first hole passing through the first detergent solution circulation hole 253 (hole center line) and the plate center line ap of the on-off valve plate 251 (the hole center of the opening/closing body mounting hole 252). It is arranged on the groove straight line Lp.

As shown in FIGS. 39 to 41, the second positioning grooves 263 and 264 are formed in the on-off valve plate 251 adjacent to the inner circumference (inner peripheral surface) of the opening-and-closing body mounting hole 252. As shown in FIGS. Each of the second positioning grooves 263 and 264 penetrates through the on-off valve plate 251 in the plate thickness direction TA of the on-off valve plate 251 and opens on the plate surface 251A and the plate back surface 251B of the on-off valve plate 251 . Each of the second positioning grooves 263 and 264 extends from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 in the radially outer direction of the switching valve plate 251. is formed with Each of the second positioning grooves 263 and 264 is recessed in an arc shape from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 . Each of the second positioning grooves 263 and 264 opens to the inner circumference (inner peripheral surface) of the opening/closing member mounting hole 252 and communicates with the opening/closing member mounting hole 252 . Each of the second positioning grooves 263, 264 has an arcuate groove bottom.

As shown in FIGS. 39 to 41, the third positioning grooves 265 and 266 have the same groove shape as the first positioning grooves 261 and 262, and are formed in the opening/closing valve plate 251 (the opening/closing body 7). .
As shown in FIG. 41, one third positioning groove 265 is located in the circumferential direction of the on-off valve plate 251 such that the first detergent liquid flow hole 253 (one first positioning groove 263) and the third detergent liquid flow hole 255. One third positioning groove 265 is separated from the first detergent liquid flow hole 253 (one second positioning groove 263) by a groove angle θW in the circumferential direction of the on-off valve plate 251, and the second detergent liquid flow hole 254 are spaced apart by a groove angle θW.
The other third positioning groove 266 is arranged between one first positioning groove 261 and the other second positioning groove 264 in the circumferential direction of the on-off valve plate 251, as shown in FIG. The other third positioning groove 266 is arranged at an angle of 180 degrees (180°) from the one third positioning groove 265 in the circumferential direction of the on-off valve plate 251 .
Thereby, each of the third positioning grooves 265 and 266 is a second hole passing through the second detergent solution circulation hole 254 (hole center line) and the plate center line ap of the on-off valve plate 251 (the hole center of the opening/closing body mounting hole 252). It is arranged on the groove straight line Lq.

Each of the third positioning grooves 265 and 266 is formed in the on-off valve plate 251 adjacent to the inner circumference (inner peripheral surface) of the opening-and-closing body mounting hole 252, as shown in FIGS. Each of the third positioning grooves 265 and 266 penetrates through the on-off valve plate 251 in the plate thickness direction TA of the on-off valve plate 251 and opens on a plate surface 251A and a plate back surface 251B of the on-off valve plate 251 . Each of the third positioning grooves 265 and 266 extends from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 in the radially outer direction of the switching valve plate 251. is formed with Each of the third positioning grooves 265 and 266 is recessed in an arc from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 toward the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 . Each of the third positioning grooves 265 and 266 opens to the inner periphery (inner peripheral surface) of the opening/closing member mounting hole 252 and communicates with the opening/closing member mounting hole 252 . Each third positioning groove 265, 266 has an arcuate groove bottom.

The fourth positioning grooves 267 and 268 have the same groove shape as the first positioning grooves 261 and 262 and are formed in the on-off valve plate 251, as shown in FIGS.
One of the fourth positioning grooves 267 is arranged between the second detergent liquid circulation hole 254 and the other of the first positioning grooves 262 in the circumferential direction of the on-off valve plate 251, as shown in FIG. The fourth positioning groove 267 on one side is arranged at a groove angle θW from the second detergent liquid circulation hole 254 (third positioning groove 265 on one side) in the circumferential direction of the on-off valve plate 251 .
The other fourth positioning groove 268 is arranged between one first positioning groove 261 and the other third positioning groove 266, as shown in FIG. The other fourth positioning groove 268 is arranged at an angle of 180 degrees (180°) from the one fourth positioning groove 267 in the circumferential direction of the on-off valve plate 251 .
Thereby, the fourth positioning grooves 267 and 268 are arranged on the third hole-groove straight line Lr passing through the third detergent liquid circulation hole 255 (hole center line) and the plate center line ap of the on-off valve plate 251 .

As shown in FIGS. 39 to 41, the fourth positioning grooves 267 and 268 are formed in the on-off valve plate 251 adjacent to the inner circumference (inner peripheral surface) of the opening-and-closing body mounting hole 252. As shown in FIGS. Each of the fourth positioning grooves 267 and 268 penetrates through the on-off valve plate 251 in the plate thickness direction TA of the on-off valve plate 251 and opens on the plate surface 251A and the plate back surface 251B of the on-off valve plate 251 . Each of the fourth positioning grooves 267 and 268 extends from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 in the radially outer direction of the switching valve plate 251. is formed with Each of the fourth positioning grooves 267 and 268 is recessed in an arc shape from the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 to the outer peripheral side (outer peripheral surface side) of the switching valve plate 251 . Each of the fourth positioning grooves 267 and 268 opens to the inner periphery (inner peripheral surface) of the opening/closing member mounting hole 252 and communicates with the opening/closing member mounting hole 252 . Each fourth positioning groove 267, 268 has an arcuate groove bottom.

The positioning plate 269 is made of synthetic resin and formed into a circular flat plate. As shown in FIG. 42, the positioning plate 269 has a plate front surface 269A and a plate back surface 269B in the plate thickness direction TB.
The positioning plate 269 has a positioning hole 275 , a positioning piece 276 , a plurality (pair) of intermediate holes 277 and 278 , and a plurality (pair) of positioning projections 279 and 280 .

The positioning holes 275 are formed in a positioning plate 269 (positioning circular plate), as shown in FIG. The positioning hole 275 is arranged concentrically with the positioning plate 269 . The positioning hole 275 penetrates the positioning plate 269 in the direction of the plate center line aq of the positioning plate 269 (the plate thickness direction TB of the positioning plate 269) and is opened on the plate surface 269A and the plate back surface 269B of the positioning plate 269. be.

As shown in FIG. 42 , the positioning piece 276 is arranged in the positioning hole 275 and divides the positioning hole 275 into approximately semicircular positioning hole portions 281 and 282 . The positioning pieces 276 extend on both sides of the plate center line ap of the positioning plate 269 in a direction HB (horizontal direction HB) orthogonal to the plate center line aq of the positioning plate 269 . It is formed integrally with the positioning plate 269 in contact with the periphery (inner peripheral surface).
The positioning piece 276 extends into the positioning hole 275 along an arrangement straight line Ls extending in the horizontal direction HB perpendicular to the plate center line ap of the positioning plate 269 .
The positioning piece 276 extends between a plate front surface 269A and a plate rear surface 269B of the positioning plate 269 in the direction of the plate centerline aq of the positioning plate 269 .
As a result, the positioning piece 276 has positioning holes 281 and 282 (substantially semicircular holes) on both sides of the positioning plate 269 in a direction UB (vertical direction UB) perpendicular to the plate thickness direction TB and the lateral direction HB. Compartment.

Each intermediate hole 277, 278 is formed in the positioning plate 269 as shown in FIG. The intermediate holes 277, 278 are arranged between the outer circumference (outer peripheral surface) of the positioning plate 269 and the positioning holes 281, 282 (positioning holes 275). The intermediate holes 277 and 278 are arranged on both sides of the plate center line a of the positioning plate 269 in the lateral direction HB of the positioning plate 269 . Each intermediate hole 277, 278 extends on both sides of the arrangement straight line Ls. Each intermediate hole 277 , 278 is formed as a substantially semicircular hole along the outer circumference (peripheral surface) of the positioning plate 269 . Each of the intermediate holes 277 and 278 penetrates the positioning plate 269 in the plate thickness direction TA of the positioning plate 269 (the direction of the plate center line aq of the positioning plate 269) to form a plate surface 269A and a plate back surface 269B of the positioning plate 269. is opened to

Each positioning projection 279, 280 is made of synthetic resin. As shown in FIG. 42, the positioning projections 279 and 280 are arranged at an angle of 180 degrees (180°) between the positioning projections 279 and 280 in the circumferential direction of the positioning plate 269 . Each positioning protrusion 279, 280 is arranged on the arrangement straight line Ls. Each of the positioning projections 279 and 280 is arranged to protrude from the outer circumference (peripheral surface) of the positioning plate 269 in the radial direction (outer radial direction) of the positioning plate 269 . Each positioning protrusion 279 , 280 is formed as an arcuate protrusion with a slightly larger radius than the first positioning groove 261 . Each of the positioning projections 279 and 280 is formed integrally with the positioning plate 269 so as to protrude in an arc shape from the outer circumference (peripheral surface) of the positioning plate 269 in the radially outer direction of the positioning plate 269 .

The opening/closing operation lever 270 is made of synthetic resin and formed into a cylindrical shape (opening/closing operation lever shaft). The opening/closing operation lever 270 is arranged on the plate surface 251A (opening/closing body 7) of the opening/closing valve plate 251, as shown in FIGS. The opening/closing operation lever 270 is arranged between the first positioning groove 261 on one side and the fourth positioning groove 268 on the other side in the circumferential direction of the opening/closing valve plate 251 . The opening/closing operation lever 270 is arranged between the outer circumference (peripheral surface) of the opening/closing valve plate 251 and the opening/closing body mounting hole 252 . The opening/closing operation lever 270 is arranged on a circle CX located on the opening/closing valve plate 251 with the plate center line ap of the opening/closing valve plate 251 as the center.
The opening/closing operation lever 270 is arranged in the first positioning groove 261 with a lever angle θV in the circumferential direction of the opening/closing valve plate 251 . The opening/closing operation lever 270 is formed integrally with the opening/closing valve plate 251 with one shaft end (one lever shaft end) of the opening/closing operation lever in contact with the plate surface 251 of the opening/closing valve plate 251 . The opening/closing operation lever 270 is arranged to protrude from the plate surface 251A of the opening/closing valve plate 251 at the plate center line ap of the opening/closing valve plate 251 .

In the opening/closing operation body 8, the positioning plate 269 is arranged on the lid body 5 (lid inner closing plate 212), as shown in FIGS. The positioning plate 269 is placed (placed) on the lid inner closing plate 212 with the back surface 269B of the positioning plate 269 facing the lid inner closing plate 212 (plate surface 212A).
The positioning plate 269 press-fits the positioning shaft 214 into each of the positioning holes 281 and 282 (inside the positioning hole 275) and press-fits the positioning piece 276 into the positioning shaft groove 228 of the positioning shaft 214 to form the lid body 5 (lid It is placed on the inner closing plate 212).
The positioning plate 269 is placed on the lid inner closing plate 212 with the back surface 269B of the positioning plate 269 in contact with the plate surface 212A of the lid inner closing plate 212 .
As a result, the positioning plate 269 is not rotated with respect to the positioning shaft 214 (lid body 5 ) and placed on the lid inner closing plate 212 .

In the opening/closing body 7, the opening/closing valve plate 251, as shown in FIGS. The positioning plate 269 is inserted into the opening/closing body mounting hole 252 toward the plate surface 212A of the plate 212, and is rotatably disposed on the positioning plate 269 (lid inner closing plate 212).
As shown in FIG. 43, the opening/closing valve plate 251 is formed by inserting the positioning protrusions 279 and 280 (the opening/closing operation body 8) into the respective first positioning grooves 261 and 262 to close the lid inner closing plate 212 (the positioning plate 269, the positioning plate 269). rotatably disposed on shaft 214).
As shown in FIG. 44, the on-off valve plate 251 is pressed against the seal ring 234 of the piston shaft 218 by pressing the back surface 251B of the on-off valve plate 251 against the lid inner closing plate 212 (positioning plate 269, positioning shaft 214). It is rotatably supported.
As a result, the opening/closing valve plate 251 (opening/closing body 7) closes the detergent solution outflow hole 220 by the plate back surface 251B (the opening/closing valve plate 25 pressed against the seal ring 234) of the opening/closing valve plate 251.
The opening/closing valve plate 251 (opening/closing body 7) is positioned at the closed position Z1 by inserting the positioning protrusions 279 and 280 into the first positioning grooves 261 and 262, respectively.

In the opening/closing body 7, the opening/closing valve plate 251 is arranged such that the back surface 251B of the opening/closing valve plate 251 is rotatably abutted against each opening/closing member supporting protrusion 216 (cover body 5), as shown in FIG. The on-off valve plate 251 rotates the other cylindrical end 256B of the inner cylindrical projection 256 to the plate surface 212A of the lid inner closing plate 212 between each of the opening/closing body supporting projections 216 and the outer circumference (peripheral surface) of the lid inner cylindrical portion 211. They are placed in contact with each other freely.
As a result, the air inlet hole 221 communicates with the inner cylindrical projection 256 as shown in FIG.

With the on-off valve 7 and the on-off operation body 8 arranged on the cover 5, the on-off operation lever 270 is operated to move the on-off valve plate 251 relative to the positioning plate 269 from the closed position Z1 in one direction (FIGS. 43 and 45). 45 and 46, the opening/closing valve plate 251 inserts the positioning projections 279 and 280 into the second positioning grooves 263 and 264 as shown in FIGS. . The on-off valve plate 251 is rotated while the back surface 251B of the on-off valve plate 251 is in sliding contact with the seal ring 234 and each of the opening-and-closing member supporting projections 216 .
The positioning protrusions 279 and 280 (opening/closing operation body 8) of the positioning plate 269 are directed toward the plate center line a of the positioning plate 269 by the rotation (rotational force) of the opening/closing valve plate 251 (opening/closing body 7) in one direction. It is extracted from the first positioning grooves 261 and 262 while being elastically deformed, slides on the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 and is inserted into the second positioning grooves 263 and 264 .
As a result, the opening/closing valve plate 251 (opening/closing body 7) is positioned from the closed position Z1 to the open position Z2 (hole opening position/first hole opening position), and the first detergent liquid flow hole 253 becomes the detergent liquid outflow hole 220. communicate with. The first detergent liquid circulation hole 253 is arranged concentrically with the detergent liquid outflow hole 220 of the lid 5 and communicates with the detergent liquid outflow hole 220 at the open position Z2.

With the on-off valve 7 and the on-off operation body 8 arranged on the lid 5, the on-off operation lever 270 is operated to move the on-off valve plate 251 from the open position Z2 to the positioning plate 269 in one direction by the flow hole angle θW. When rotated, the on-off valve plate 251 inserts each positioning protrusion 279, 280 into each third positioning groove 265, 266, as shown in FIGS. The on-off valve plate 251 is rotated while the plate back surface 251B of the on-off valve plate 251 is in sliding contact with the seal ring 234 and each of the waste closing body support projections 216 .
The positioning protrusions 279 and 280 (opening/closing operation body 8) of the positioning plate 269 are directed toward the plate center line a of the positioning plate 269 by the rotation (rotational force) of the opening/closing valve plate 251 (opening/closing body 7) in one direction. It is extracted from the second positioning grooves 263 and 264 while being elastically deformed, slides on the inner circumference (inner peripheral surface) of the opening/closing body mounting hole 252 and is inserted into the third positioning grooves 265 and 266 .
As a result, the opening/closing valve plate 251 (opening/closing body 7) is positioned from the open position Z2 (first hole opening position) to the second open position Z3 (hole opening position/second hole opening position), and the second detergent liquid The flow hole 254 communicates with the detergent liquid outlet hole 220 . The second detergent liquid circulation hole 254 is arranged concentrically with the detergent liquid outflow hole 220 of the lid 5 and communicates with the detergent liquid outflow hole 220 at the second open position Z3.

With the on-off valve 7 and the on-off operation body 8 arranged on the lid 5, the on-off operation lever 270 is operated to move the on-off valve plate 251 with respect to the positioning plate 269 from the second open position Z3 in one direction. When rotated by θW, the on-off valve plate 251 inserts the positioning protrusions 279 and 280 into the fourth positioning grooves 267 and 268 as shown in FIGS. The on-off valve plate 251 is rotated while the plate back surface 251B of the on-off valve plate 251 is in sliding contact with the seal ring 234 and each of the waste closing body support projections 216 .
The positioning protrusions 279 and 280 (opening/closing operation body 8) of the positioning plate 269 are directed toward the plate center line a of the positioning plate 269 by the rotation (rotational force) of the opening/closing valve plate 251 (opening/closing body 7) in one direction. It is extracted from the third positioning grooves 265 and 266 while being elastically deformed, slides on the inner periphery (inner peripheral surface) of the opening/closing body mounting hole 252 and is inserted into the fourth positioning grooves 267 and 268 .
As a result, the opening/closing valve plate 251 (opening/closing body 7) is positioned from the second opening position Z3 (second hole opening position) to the second opening position Z3 (hole opening position/second hole opening position). The detergent liquid flow holes 255 are communicated with the detergent liquid outlet holes 220 . The third detergent fluid flow hole 255 is arranged concentrically with the detergent fluid outflow hole 220 of the lid 5 and communicates with the detergent fluid outflow hole 220 at the third open position Z4.

The opening/closing valve plate 251 is rotated in the other direction (clockwise) by operating the opening/closing operation lever 270 . As a result, the on-off valve plate 251 is positioned from the third open position Z4 to the second open position Z3, the first open position Z2, or the closed position Z1.
In this manner, the opening/closing body 7 is positioned at the closed position Z1, the first open position Z2, the second open position Z3, or the third open position Z4 by manually operating the opening/closing operation body 8. FIG.

51 to 53, the gun main body 9 includes a gun cylindrical portion 290, a gun closing plate 291, a gun cylindrical shaft 292, a plurality (four) of gun mounting shafts 293 to 296, and a gun inflow cylindrical portion 298 (gun an inflow cylinder portion), an inflow passage 299, a detergent liquid introduction passage 300, an air introduction hole 301, and a lever guide cylinder portion 302.

The gun cylindrical portion 290 is formed of synthetic resin in a cylindrical shape (cylindrical shape).

The gun closing plate 291 is made of synthetic resin and formed into a circular flat plate (circular shape). As shown in FIGS. 51 to 53, the gun closing plate 291 has a plate front surface 291A and a plate back surface 291B in the plate thickness direction. The gun closing plate 291 is arranged concentrically with the gun cylindrical portion 290 and formed integrally with the gun cylindrical portion 290 . The gun closing plate 291 closes the one cylinder end of the gun cylindrical portion 290 by contacting the back surface 291B of the gun closing plate 291 with one cylinder end (one gun cylinder end) of the gun cylinder portion 290 .

The gun cylinder shaft 292 is made of synthetic resin and formed in a cylindrical shape (cylindrical shape). A gun barrel shaft 292 is disposed within the gun barrel 290, as shown in FIGS. A gun cylinder shaft 292 is arranged concentrically with the gun cylinder portion 290 . The gun cylindrical shaft 292 is formed integrally with the gun closing plate 291 with one shaft end (one gun shaft end) of the gun cylindrical shaft 292 in contact with the back surface 291B of the gun closing plate 291 .
The gun cylinder shaft 292 is arranged to protrude into the gun cylinder portion 290 from the back surface 291B of the gun closing plate 291 in the direction TC of the cylinder center line ar of the gun cylinder portion 290 .

Each of the gun mounting shafts 293 to 296 is made of synthetic resin and formed into a cylindrical shape. Each of the gun mounting shafts 293 to 296 is arranged between the inner circumference (inner peripheral surface) of the gun cylindrical portion 290 and the outer circumference (outer peripheral surface) of the gun cylindrical shaft 292, as shown in FIGS. Each of the gun mounting shafts 293 to 296 is centered on the cylinder center line ar of the gun cylindrical portion 290 and positioned on the gun closing plate 291 between the gun cylindrical portion 290 and the gun cylindrical shaft 292 (a circle CT (the gun mounting cylindrical portion 215 is (circle with the same radius as the circle CT to be arranged).
The gun mounting shafts 293 and 294 are arranged at an angle of 180 degrees (180°) between the gun mounting shafts 293 and 294 in the circumferential direction of the gun cylindrical portion 290 . The gun mounting shafts 295 and 296 are arranged at an angle of 180 degrees (180°) between the gun mounting shafts 295 and 296 in the circumferential direction of the gun cylindrical portion 290 . The gun mounting shafts 293 and 296 are spaced apart from each other by a shaft arrangement angle θα (the same angle as the cylinder arrangement angle θα) in the circumferential direction of the gun cylindrical portion 290 .

As shown in FIGS. 51 and 53, the gun mounting shafts 293 to 296 are arranged so that the cylinder center line of each gun mounting shaft 293 to 296 faces the direction TC of the cylinder center line ar of the gun cylindrical portion 290 . Each of the gun mounting shafts 293 to 296 has one shaft end (one gun shaft end) of each of the gun mounting shafts 293 to 296 in contact with the plate rear surface 291B of the gun closing plate 291, thereby into the gun barrel 290 . Each of the gun mounting shafts 293-296 is integrally formed with the gun closing plate 291. As shown in FIG.

The gun inflow cylindrical portion 298 is made of synthetic resin and arranged in a cylindrical shape (cylindrical shape). The gun inflow cylindrical portion 298 is positioned between the gun mounting shafts 293 and 296 and between the gun mounting shafts 294 and 295 as shown in FIGS. The gun inflow cylindrical portion 298 is arranged so that the cylinder center line of the gun inflow cylindrical portion 298 is oriented in a direction TP (front-rear direction) perpendicular to the cylinder center line ar of the gun cylindrical portion 290 . The gun inflow cylindrical portion 298 extends in a direction TP orthogonal to the cylinder center line ar of the gun cylindrical portion 290 so that each of the cylinder ends 298A and 298B (gun inflow cylinder ends) of the gun inflow cylindrical portion 298 extends into the gun cylindrical portion 290. is arranged so as to protrude from the outer periphery (peripheral surface) of the
The gun inflow cylindrical portion 298 protrudes a part of the outer circumference (outer peripheral surface) of the gun inflow cylindrical portion 298 from the plate back surface 291B of the gun closing plate 291 into the gun cylindrical portion 290 so that the gun cylindrical portion 290 and the gun closing plate 291 are formed. formed integrally with

The inflow passage 299 is formed through the gun body 9 as shown in FIGS. The inflow path 299 is formed in the gun inflow cylindrical portion 298 (the gun body 9). The inflow passage 299 extends inside the gun inflow cylindrical portion 298 in the direction TC of the cylinder center line ar of the gun inflow cylindrical portion 298, and the respective cylinder ends 298A and 298B of the gun inflow cylindrical portion 298 (each gun cylinder end). is opened to
As shown in FIG. 53, the inflow path 299 (inflow hole) includes a liquid inflow hole 299a (liquid inflow hole portion), a large diameter inflow hole 299b (large diameter inflow hole portion), and a liquid throttle hole 299c (liquid throttle hole portion). and a liquid injection hole 299d (liquid injection hole portion).

The liquid inflow hole 299a is opened at the other cylindrical end 298B of the gun inflow cylindrical portion 298, as shown in FIG. The liquid inflow hole 299a is formed so as to gradually decrease in diameter from the other cylindrical end 298B of the gun inflow cylindrical portion 298 toward the one cylindrical end 298A in the direction TC of the cylinder center line ar of the gun inflow cylindrical portion 298. .

The large-diameter inflow hole 299b is opened at one cylindrical end 298A of the gun inflow cylindrical portion 298, as shown in FIGS.

As shown in FIG. 53, the liquid throttle hole 299c is arranged between the liquid inlet hole 299a and the large diameter inlet hole 299b in the direction TC of the cylinder center line ar of the gun inlet cylindrical portion 298. As shown in FIG. The liquid throttle hole 229c is formed continuously with the liquid inflow hole 299a. The liquid throttle hole 299c is formed so as to decrease in diameter from the liquid inflow hole 299a toward one cylindrical end 298A (large diameter inflow hole 299b) of the gun inflow cylindrical portion 298. As shown in FIG.

As shown in FIG. 53, the liquid injection hole 299d is arranged between the large diameter inflow hole 299b and the liquid throttle hole 299c in the direction TC of the cylinder center line ar of the gun inflow cylindrical portion 298. As shown in FIG. The liquid injection hole 299d is formed continuously with the liquid throttle hole 299c. The liquid injection hole 299d communicates with the large diameter inflow hole 299b.

The detergent liquid introduction path 300 is, for example, a detergent liquid introduction hole (hereinafter referred to as "detergent liquid introduction hole 300"). The detergent liquid introduction hole 300 is arranged in the gun body 9 and formed in the gun inflow cylindrical portion 298 as shown in FIGS. The detergent liquid introduction hole 300 is arranged on a circle CW (a circle having the same radius as the circle CW on which the piston housing cylinder 21 is arranged) located in the gun inflow cylinder 298 with the tube center line ar of the gun cylinder 290 as the center. be done. The detergent liquid introduction hole 300 passes through the gun inflow cylindrical portion 298 in the direction CT of the cylinder center line ar of the gun cylindrical portion 290, and extends to the outer periphery (outer peripheral surface) of the gun inflow cylindrical portion 298 located inside the gun cylindrical portion 290. , and the inner periphery (inner peripheral surface) thereof is opened to communicate with the inflow passage 299 and the gun cylindrical portion 290 . The detergent liquid introduction hole 300 is orthogonal to the cylinder center line as of the gun inflow cylindrical portion 298 and communicates (opens) with the inflow path 299 .
The detergent liquid introduction hole 300 communicates (opens) in the inflow path 299 with the liquid injection hole 299d between the large diameter inflow hole 299b and the liquid throttle hole 299c. The detergent liquid introduction hole 300 is gradually reduced in diameter from the outer circumference (outer peripheral surface) of the gun inflow cylindrical portion 298 toward the inner circumference (inflow passage 299), and extends into the gun cylindrical portion 290 and the inflow passage 299 (liquid injection hole 299d). ).

51 to 53, the lever guide tube portion 302 is made of synthetic resin and arranged on the gun closing plate 291. As shown in FIGS. The lever guide tube portion 302 is disposed between the gun mounting shafts 293 and 295 in the circumferential direction of the gun cylindrical portion 290 and formed integrally with the gun closing plate 291 . As shown in FIG. 53, the lever guide cylinder portion 302 is positioned on the gun closing plate 291 with the cylinder center line ar of the gun cylinder portion 290 (the plate center line of the gun closing plate 291) as the center. 270 are placed on a circle having the same radius as the circle CT on which 270 is placed.

As shown in FIG. 52(b), the lever guide cylinder portion 302 is perpendicular to the cylinder center line ar of the gun cylinder portion 290 and the cylinder center line as of the gun inflow cylinder portion 298 in the circumferential direction of the gun cylinder portion 290. It extends from the guide straight line aw on both sides of the guide straight line aw. The lever guide cylinder portion 302 has a lever hole angle θσ on one side of the gun straight line aw from the gun straight line aw in the circumferential direction of the gun cylindrical portion 290, and a lever hole angle θσ on the other side of the gun straight line aw from the gun straight line aw. It extends with an angle θσ. The lever hole angle θσ is 1.5 times the flow hole angle θW (θσ=1.5×θW, 2×θσ=3×θW).
The lever guide tube portion 302 extends along the circle CT located on the gun closing plate 291 and is formed into an arc-shaped tube (an arc-shaped tube having an angle of 2×θσ).

As shown in FIG. 52(b), the lever guide cylinder portion 302 is located along the cylinder center line as are arranged at a lever cylinder arrangement angle θτ. The lever hole arrangement angle θτ is the same angle as the lever angle θV.
The lever guide tube portion 302 has an arc length of (2×π×r×2×θσ)/360+d1 where r1 is the radius of the circle CT, d1 is the shaft diameter of the opening/closing operation lever 270, and π is the circumference of the lever. arc length of the guide tube portion 302). The lever guide tube portion 302 has an inner peripheral width slightly wider than the shaft diameter d1 of the opening/closing operation lever 270 in the radial direction of the gun cylindrical portion 290 (the gun closing plate 291).

As shown in FIGS. 51 and 53, the lever guide tube portion 302 is arranged inside the gun cylinder portion 290. ) is brought into contact with the back surface 291B of the gun closing plate 291 and formed integrally with the gun closing plate 291 . The lever guide cylinder portion 302 is arranged to protrude from the back surface 291B of the gun closing plate 291 toward the gun cylinder portion 290 at the cylinder center line ar of the gun cylinder portion 290 . The lever guide cylinder portion 302 protrudes into the gun cylinder portion 290 from the back surface 291B of the gun closing plate 291 with a cylinder length shorter than the gun cylinder shaft 292 . The lever guide tube portion 302 is arranged such that one tube end side of the lever guide tube portion 302 penetrates the gun closing plate 291 and one tube end opens to the plate surface 291A of the gun closing plate 291 .
The lever guide tube portion 302 is arranged such that the other tube end 302 b (the other guide tube end) of the lever guide tube portion 302 is opened in the gun cylinder portion 290 .

51 and 53, the seal groove 303 is formed in a gun inlet cylinder 298 located inside the gun cylinder 290. As shown in FIGS. The seal groove 303 is arranged concentrically with the detergent liquid introduction hole 300 . The seal groove 303 has a groove depth in the direction TC of the cylinder center line ar of the gun cylindrical portion 290 and opens on the outer periphery (outer peripheral surface) of the gun inflow cylindrical portion 298 .

The seal ring 304 is formed in an annular shape with an elastic material such as synthetic rubber. As shown in FIG. 53, the seal ring 303 is inserted into the seal groove 303 and attached (arranged) to the gun inflow cylindrical portion 298 . The seal ring 304 is arranged to protrude from the gun inflow cylindrical portion 298 (seal groove 303 ) in the direction TC of the axial center line ar of the gun cylindrical portion 290 .

As shown in FIG. 35, the gun main body 9 is configured such that one cylindrical end 290B of the gun cylindrical portion 290 is directed toward the lid body 5 (cover outer closing plate 210) and the lever guide cylinder portion 302 is directed toward the opening/closing operation lever 270. , is attached to the lid 5 . The gun body 9 is attached to the lid 5 by fitting the gun cylindrical portion 290 from one cylindrical end 290B to the gun mounting cylindrical portion 213 (cover 5). In the gun body 9, the gun mounting cylindrical portion 213 is press-fitted into the gun cylindrical portion 290, and the other cylindrical end 290B of the gun cylindrical portion 290 is brought into close contact with the lid outer closing plate 210 (plate surface 210A) and is attached to the lid body 5. Placed (mounted). The gun main body 9 is disposed on the lid 5 with the air introduction holes 301 facing the air introduction grooves 226 (the lid 5 ), and the gun mounting cylindrical portion 213 being press-fitted into the gun cylindrical portion 290 .
When the other cylinder end 290B of the gun cylindrical portion 290 is brought into close contact with the plate surface 290A of the lid outer closure plate 210, the gun main body 9 is separated from the lid body 5 [the gun closure plate 291 and the lid outer closure plate 210 (lid inner closure plate 291). It is attached to the lid 5 with an air introduction space AR between the plates 212)].

35 and 54, when the gun main body 9 is attached to the cover 5, the detergent liquid outflow hole 220 in the cover 5 opens (communicates) with the air introduction space AR and extends into the storage container 4. It is opened (communicated).

In the gun body 9, as shown in FIG. 35, the air introduction hole 301 opens into the air introduction space AR and communicates with the air introduction hole 221 through the air introduction space AR (air introduction groove 226, air circulation groove 257). .
In the lid 5 , the air inflow hole 221 opens (communicates) with the air introducing space AR and opens (communicates) with the storage container 4 when the gun body 9 is attached to the lid 5 .
The inside of the storage container 4 passes through the air inflow hole 221 (cover body 5), each air circulation groove 257 (opening and closing body 7), each air introduction groove 226 (cover body 5) and each air introduction hole 301 (gun body 9). It communicates with the outside of the gun body 9 (outside air).
As a result, the inside of the storage container 4 is always kept in the atmospheric state (atmospheric pressure state).

The gun body 9 is attached to the lid 5 (lid outer closure plate 210) by press-fitting the gun attachment shafts 293-296 into the gun attachment cylindrical portions 215A-215D (lid 5).
As a result, the gun body 9 is non-rotatably arranged on the lid body 5 (on-off valve plate 251).

As shown in FIG. 54, the gun body 9 is attached to the cover 5 by fitting the gun cylindrical shaft 292 onto the positioning shaft 214 (cover 5). The gun body 9 is arranged with the positioning shaft 214 press-fitted into the gun cylindrical shaft 292 and the other cylindrical end 292B (the other gun shaft end) of the gun cylindrical shaft 292 abutting against the positioning plate 269 (plate surface 269A). be.

As shown in FIGS. 1 and 2, the gun main body 9 is attached to the lid 5 by inserting the opening/closing operation lever 270 (the opening/closing operation body 8) into the lever guide tube portion 302. As shown in FIGS.
In the opening/closing operation body 8, the opening/closing operation lever 270 slidably penetrates the inside of the lever guide cylinder portion 302 (the gun body 9) and protrudes from the plate surface 291A of the gun closing plate 291 (the gun body 9).

As shown in FIG. 54, the gun main body 9 has the detergent liquid introduction hole 300 (detergent liquid introduction path) opposed to the opening/closing valve plate 251 (the opening/closing body 7), and the seal ring 304 facing the opening/closing valve plate 251 (the opening/closing body 7). It is attached to the lid 5 by pressing against the plate surface 251A).
As a result, the opening/closing valve plate 251 (the opening/closing body 7) is housed in the air introduction space AR. The opening/closing valve plate 251 (opening/closing body 7) faces (opposes) the detergent liquid outflow hole 220 (detergent liquid outflow path) and the detergent liquid introduction hole 300 (detergent liquid introduction path) in the air introduction space AR. It is arranged between the shaft 218 (cover 5) and the gun inlet cylinder 298 (gun body 9).
As shown in FIG. 54, when the piston shaft 218 is arranged with the opening/closing valve plate 251 (opening/closing body) between the gun inflow cylindrical portion 298, the spring force (biasing force) of the piston biasing spring 219 (coil spring) causes the piston shaft 218 to The seal ring 234 is pressed against the back surface 251B of the on-off valve plate 251 by being biased toward the on-off valve plate 251 .
In the gun body 9, the detergent liquid introduction hole 300 (detergent liquid introduction path) faces the detergent liquid outflow hole 220 (detergent liquid outflow path) and opens into the air introduction space AR, and the inflow path 299 (liquid injection hole). 299d).

As shown in FIGS. 1, 2 and 35, the gun main body 9 connects one inflow passage end of the inflow passage 299 (the other cylindrical end 298B of the gun inflow cylindrical portion 298) to the outflow passage 15 (nozzle head main body 1). , and attached to the other cylindrical end 1B side of the nozzle head body 1 .
The gun main body 9 press-fits the other cylindrical end 1B of the nozzle head main body 1 from one cylindrical end 298A of the gun inflow cylindrical portion 298 into the gun inflow cylindrical portion 298 (outflow passage 15, large diameter inflow hole 229b). , is attached to the nozzle head body 1 .
Thereby, the inflow path 299 (the gun body 9) is communicated with the outflow path 15 (the nozzle head body 1). In the inflow path 299, the liquid injection hole 299d communicates with the small diameter outflow hole 24 (outflow path 15).

Water (pressurized water) flows into the gun body 9 from the other inflow path end of the inflow path 299 (the other cylindrical end 298B of the gun inflow cylindrical portion 298).

As shown in FIGS. 54, 56, and 57, the opening/closing valve plate 251 (opening/closing body 7) has a detergent solution outflow hole 220 (detergent solution outflow path) and a detergent solution introduction hole 300 (detergent solution flow path) in the air introduction space AR. introduction path), it blocks the detergent liquid introduction hole 300 from the detergent liquid discharge hole 220 or communicates the detergent liquid discharge hole 220 with the detergent liquid introduction hole 300 .
As shown in FIGS. 54 and 55, the opening/closing valve plate 251 (the opening/closing plate 7) has a detergent solution outflow hole 220 (detergent solution outflow path) and a detergent solution introduction hole 300 (detergent solution introduction path) in the air introduction space AR. , the closed position Z1 blocking the detergent liquid introduction hole 300 from the detergent liquid discharge hole 220, and the open positions Z1, Z2, Z3 communicating the detergent liquid discharge hole 220 with the detergent liquid introduction hole 300. .

As shown in FIGS. 56 and 57, the opening/closing valve plate 251 (opening/closing body 7) is provided in the air introduction space AR with a detergent solution outflow hole 220 (detergent solution outflow path) and a detergent solution introduction hole 300 (detergent solution introduction path). When arranged between, the first detergent liquid circulation hole 253 communicates with the detergent liquid outflow hole 220 and the detergent liquid introduction hole 300, respectively, or the second detergent liquid circulation hole 254 communicates with the detergent liquid outflow hole 220 and the detergent liquid introduction. The holes 300 are communicated with each other, or the third detergent liquid circulation hole 255 is communicated with each of the detergent liquid outlet hole 220 and the detergent liquid introduction hole 300 .
As shown in FIGS. 55 to 57, the on-off valve plate 251 has a first hole opening position Z1 or a second opening position Z1 that communicates the first detergent liquid circulation hole 253 with the detergent liquid outflow hole 220 and the detergent liquid introduction hole 300, respectively. A second opening position Z2 that communicates the detergent solution circulation hole 254 with the detergent solution outflow hole 220 and the detergent solution introduction hole 300, respectively, or a third detergent solution circulation hole 255 that communicates with the detergent solution outflow hole 220 and the detergent solution introduction hole 300, respectively. The third hole opening position Z3 is set so as to communicate with each other.

As shown in FIGS. 54 to 57, the opening/closing operation body 8 has an opening/closing valve plate 251 (opening/closing body 7) between the detergent liquid outflow hole 220 (detergent liquid outflow path) and the detergent liquid introduction hole 300 (detergent liquid introduction path). ), the opening/closing operation lever 270 is manually operated to move the opening/closing valve plate 251 (opening/closing body 7) to the closed position Z1, the first opening position Z1 (open position), the second opening position Z2, or the second opening position Z2. Set to 3-hole opening position Z3.
As shown in FIG. 55(a), the open/close operating lever 270 is disposed in contact with one arc length end 302a of the lever guide tube portion 302 at the closed position Z1.

As shown in FIGS. 55(a), 55(b), and 56, the opening/closing operation body 8 moves the opening/closing valve plate 251 (the opening/closing body 7) from the closed position Z1 to the communication hole by manually operating the opening/closing operation lever 270. By rotating by an angle θW (groove angle), the on-off valve plate 251 is moved from the closed position Z1 to the first hole position Z2 (open position).
The opening/closing valve plate 251 (opening/closing body 7) is rotated by the circulation hole angle θW while slidingly contacting the seal rings 234 and 303, and is moved from the closed position Z1 to the first hole open position Z2.
The on-off valve plate 251 is positioned at the first open position Z2 by inserting the positioning protrusions 279 and 280 of the positioning plate 269 into the second positioning grooves 263 and 264 (see FIG. 45), and moving to the first hole opening position Z2. Positioned.
As shown in FIG. 56(a), the on-off valve plate 251 is arranged such that the first detergent fluid circulation hole 253 is connected to the detergent fluid outflow hole 220 (detergent fluid outflow path) and the detergent fluid introduction hole 300 (detergent fluid outflow path) at the first hole opening position Z2. (detergent liquid introduction path). The first detergent liquid circulation hole 253 is airtightly communicated with the detergent liquid outflow hole 220 and the detergent liquid introduction hole 300 by seal rings 234, 304 pressed against the plate surface 251A and the plate back surface 251B of the on-off valve plate 251. .

As shown in FIGS. 55(c), 55(d), and 56, the opening/closing operation body 8 manually operates the opening/closing operation lever 270 to move the opening/closing valve plate 251 (the opening/closing body 7) to the first hole opening position Z2. , the on-off valve plate 251 is rotated from the first opening position Z2 to the second opening position Z3.
The opening/closing valve plate 251 (opening/closing body 7) is rotated by the communication hole angle θW while slidingly contacting the seal rings 234 and 303, and is moved from the first hole opening position Z2 to the second hole opening position Z3.
The on-off valve plate 251 is moved to the second open position Z3 by inserting the positioning protrusions 279 and 280 of the positioning plate 269 into the third positioning grooves 265 and 266 (see FIG. 47). Positioned.
As shown in FIG. 56(b), the on-off valve plate 251 has the second detergent fluid circulation hole 254 at the second opening position Z3, the detergent fluid outflow hole 220 (detergent fluid outflow path) and the detergent fluid introduction hole 300 (detergent fluid outflow path). (detergent liquid introduction path). The second detergent liquid circulation hole 254 is airtightly communicated with the detergent liquid outflow hole 220 and the detergent liquid introduction hole 300 by seal rings 234 and 304 pressed against the plate surface 251A and the plate back surface 251B of the on-off valve plate 251. .

As shown in FIGS. 55(c), 55(d), and 57, the opening/closing operation body 8 manually operates the opening/closing operation lever 270 to move the opening/closing valve plate 251 (the opening/closing body 7) to the second hole opening position Z3. is rotated by the circulation hole angle .theta.W (groove angle) from the second opening position Z3 to the third opening position Z4.
The opening/closing valve plate 251 (opening/closing body 7) is rotated by the communication hole angle θW while slidingly contacting the seal rings 234 and 303, and is moved from the second hole opening position Z3 to the third hole opening position Z4.
The on-off valve plate 251 is positioned at the third open position Z4 by inserting the positioning protrusions 279 and 280 of the positioning plate 269 into the fourth positioning grooves 267 and 268 (see FIG. 49). Positioned. As shown in FIG. 55(d), the opening/closing operation lever 270 abuts on the other arc length end 302b of the lever guide tube portion 302 at the third hole opening position Z4.
As shown in FIG. 57, the on-off valve plate 251 has the third detergent fluid circulation hole 255 at the third opening position Z4, the detergent fluid outflow hole 220 (detergent fluid outflow path) and the detergent fluid introduction hole 300 (detergent fluid introduction hole). roads). The third detergent solution circulation hole 255 is airtightly communicated with the detergent solution outlet hole 220 and the detergent solution introduction hole 300 by seal rings 234 and 304 pressed against the plate surface 251A and plate back surface 251B of the on-off valve plate 251. .

In this manner, the opening/closing valve plate 252 (opening/closing body 7) is manually operated by the opening/closing operation lever 270 to move to the closed position Z1, the first opening position Z1 (open position), the second opening position Z2, or the second opening position Z2. It is set to an arbitrary 1 position among the 3 hole opening positions Z3.
The opening/closing body 7 rotates the opening/closing valve plate 251 (the opening/closing body 7) from one arc length end 302a of the lever guide tube portion 302 toward the other arc length end 302b by manually operating the opening/closing operation lever 270 ( forward rotation), or by rotating (reverse rotation) the on-off valve plate 251 (open-close body 7) from the other arc length end 302b toward the other arc length end 302b, the on-off valve plate 251 (open-close body 7) is set to any one of the closed position Z1, the first open position Z1 (open position), the second open position Z2, or the third open position Z3.

The cleaning gun device X connects the gun body 9 (inflow passage 299) to a water supply source 500, as shown in FIGS.
The gun main body 9 is connected to the water supply pipe 501 through the water supply pipe 501 by connecting the other inflow passage end of the inflow passage 299 (the other cylindrical end 289B of the gun inflow cylindrical portion 298) to the water supply pipe 501 .

The cleaning gun device X manually operates (rotates) the nozzle switching lever 72 to set the nozzle switching valve 3 (switching valve body 95) to the mist nozzle position V1.
In the nozzle switching valve 3 , the switching valve body 95 is rotated together with the valve body guide body 73 (valve body support plate 83 ) by manual operation of the nozzle switching lever 72 . The switching valve body 95 is rotated while the plate surface 97A of the valve body flat plate 97 is in sliding contact with the plate surface 122A of the valve seat flat plate 122 of the switching valve seat 96 to the mist nozzle position V1.
32(a), 33(a), 34, and 58, the outflow passage 15 (inflow passage 299) is in the mist nozzle position V1, and each first liquid of the switching valve body 95 Each mist stream of the mist nozzle body 32 passes through the outflow holes 101, 102, the first liquid introduction holes 123, 124 and the first liquid inflow holes 114, 115 of the switching valve seat 96, the rectifying throttle holes 69, and the outer flow path λ1. It communicates with the paths ε1 and ε2.

As shown in FIGS. 35 and 44, the cleaning gun device X manually operates (rotates) the opening/closing operation lever 270 (opening/closing operation body 8) at the mist nozzle position V1 of the nozzle switching valve 3 (switching valve body 95). ) to bring the on-off valve plate 251 (open-close body 7) to the closed position Z1.

The cleaning gun device X flows (introduces) water from the water supply source 500 into the inflow passage 299 of the gun main body 9 at the mist nozzle position V1 and the closed position Z1.
Water from the water supply source 500 flows into the inflow channel 299 through the water supply pipe 501 .

In the inflow passage 299, as shown in FIG. 35, the water flows through the liquid inflow hole 299a, the liquid restriction hole 299c and the liquid injection hole 299d, and the outflow passage 15 (small diameter outflow) from the liquid injection hole 299d (inflow passage 299). It is injected into the hole 24). The liquid throttle hole 299c gradually increases the flow velocity of the water and jets it to the liquid jetting hole 299d. The water flowing through the inflow path 299 is jetted to the liquid jetting hole 299d while increasing the flow velocity by flowing through the liquid throttle hole 299c.

In the cleaning gun device X, the water injected into the outflow passage 15 (small-diameter outflow hole 24) is a large-diameter flow as shown in FIGS. Flowing through the outlet hole 23 [the large-diameter outflow hole 23 (outflow path 15) between the switching valve body 95 and the head step portion 25], the first liquid outflow holes 101 and 102 (switching valve body 95) and the first liquid Through the introduction holes 123, 124 (switching valve seat 96), the first liquid inflow holes 114, 115 (switching valve seat 96) are ejected into the liquid introducing path σ.

The water jetted into the liquid introduction path σ flows into each regulating throttle hole 69 and flows through each regulating throttle hole 69, thereby rectifying the flow direction of the water to the direction A of the cylinder center line a of the nozzle head body 1 ( direction) and injected into the outer flow path λ1.
Each regulating throttle hole 69 increases the flow velocity of the water flowing through each position throttle hole 69 and jets the water flow toward the direction A of the cylinder center line a of the nozzle head body 1 to the outer flow path λ1.

The water injected into the outer flow path λ1 flows into each mist throttle hole 54 as shown in FIG.

As shown in FIG. 58, the water that has flowed into each mist throttle hole 54 flows through the first and second spiral mist flow paths ε1 and ε2, and flows into each mist throttle hole 54 on the side of each nozzle throttle hole 53. is injected (ejected) into the
By flowing through the first and second spiral mist passages ε1 and ε2, the water is depressurized while increasing the flow velocity, and flows from the first and second mist passages ε1 and ε2 to the respective nozzle throttle holes 53. The mist is injected into each mist throttle hole 54 . Furthermore, through each mist throttle hole 54 and each nozzle throttle hole 53, a large amount of macro bubbles and ultra-fine bubbles are mixed, dissolved into fine water droplets [fine liquid mist (fine water mist), and each nozzle throttle It is injected (sprayed) outward (outside) from the hole 53 (injector Y/spray ring body 31).
As a result, the fine water droplets (fine mist) jetted from the first and second mist passages ε1 and ε2 to the respective mist throttle holes 54 become turbulent at high pressure.

When fine mist is injected (sprayed) from each nozzle throttle hole 53, the exit side of each nozzle throttle hole 53 (the side where the fine mist is injected) becomes a negative pressure state.
By setting the outlet side of each nozzle throttle hole 53 to a negative pressure state, the high pressure and turbulent flow flowing out from the first and second mist flow paths ε1 and ε2 to each mist throttle hole 54 on the side of each nozzle throttle hole 53 are reduced. When the fine mist (fine water mist) passes through the outlet of each mist throttle hole 54, bubbles are deposited by decompression, and the gas (air) entrained at the time of injection is pulverized (sheared) by turbulent flow. In addition to the fine mist, a large amount of fine bubbles and ultra-fine bubbles are mixed and become a melted ultrafine mist (extremely fine water mist).
Ultrafine water mist is injected (sprayed) from each nozzle throttle hole 53 of the injector Y through each mist throttle hole 54 .

As shown in FIGS. 56 and 57, the cleaning gun device X manually operates (rotates) the opening/closing operation lever 270 (opening/closing operation body 8) at the mist nozzle position V1 of the nozzle switching valve 3 (switching valve body 95). ) to move the on-off valve plate 251 (open-close body 7) from the closed position Z1 to the first open position Z2, the second open position Z3, or the third open position Z4.

In the cleaning gun device X, at the mist nozzle position V1, the on-off valve plate 251 (opening/closing body 7) is moved from the closed position Z1 to the first opening position Z2, the second opening position Z3, or the third opening position Z4. Then, as shown in FIGS. 56 and 57, the detergent solution WC in the storage container 4 is moved to the detergent solution outlet pipe 6 and the detergent solution outlet hole 220 (detergent solution outlet channel) by the water flow toward the outlet channel 15. ), the first detergent liquid circulation hole 253 (or the second detergent liquid circulation hole 254 or the third detergent liquid circulation hole 255), and the detergent liquid introduction hole 300 (the detergent liquid introduction passage), the inflow path 299 (the liquid injection It is jetted (jetted) into the hole 299d).
The detergent solution WC in the storage container 4 is pulled through the detergent solution outlet pipe 6 into the detergent solution outlet hole 220 by the water flow flowing through the inflow channel 299, and is drawn into the first detergent solution circulation hole 253 or the second detergent solution circulation hole. 254 or through the third detergent liquid circulation hole 255 and the detergent liquid introduction hole 300, and is jetted from the detergent liquid introduction hole 300 to the inflow passage 15 (liquid injection hole 299d).
The detergent liquid outflow hole 200 reduces the pressure while increasing the flow velocity of the detergent liquid WC, and injects the detergent liquid WC into the first detergent liquid circulation hole 253, the second detergent liquid circulation hole 254, or the third detergent liquid circulation hole 255. .
The first to third detergent liquid circulation holes 253, 254, and 255 jet (outflow) the detergent liquid WC into the detergent liquid introduction hole 300 at different flow rates (injection amounts of the detergent liquid WC).
The flow rate of the detergent liquid WC jetted from the first to third detergent liquid flow holes 253, 254, and 255 is the flow rate Qa jetted from the first detergent liquid flow hole 253, the flow rate Qb jetted from the second detergent liquid flow hole 254, and the flow rate Qc injected from the third detergent liquid circulation hole 255, Qa<Qb<Qc.
The diameters of the first through third detergent passage holes 253, 254, and 255 are different. Since it is the hole diameter of the circulation hole 255, the flow rate Qa injected from the first detergent liquid circulation hole 253 is smaller than the flow rate Qb, Qc injected from the second and third detergent liquid circulation holes 254, 255, and the second detergent liquid The flow rate Qb jetted from the circulation holes 254 is less than the flow rate Qc jetted from the third detergent liquid circulation holes 255 .

In the cleaning gun device X, the detergent liquid WC injected from the detergent liquid introduction hole 300 into the inflow passage 15 (liquid injection hole 299d) is, as shown in FIG. , to form detergent liquid mixed water (hereinafter referred to as "detergent liquid mixed water") in which water and detergent liquid are mixed. The detergent liquid mixed water is a liquid obtained by diluting the detergent liquid with water.
The detergent liquid water is injected from the inflow path 299 (liquid injection hole 299d) to the outflow path 15 (small diameter outflow hole 24).

By selecting the first hole position Z1, the second hole position Z2, and the third hole position Z3 of the opening/closing valve plate 251 (the opening/closing body 7), the inflow path 299 (the liquid injection hole 299d) from the detergent liquid introduction hole 300 ) can be adjusted to adjust the concentration of the detergent liquid WC in the detergent liquid water.

In the cleaning gun device X, as shown in FIG. through the first liquid outflow holes 101 and 102 (switching valve body 95) and the first liquid introduction holes 123 and 124 (switching valve seat 96). 1. The liquid is ejected from the liquid inflow holes 114 and 115 (switching valve seat 96) to the liquid introduction path σ.

The detergent-liquid mixed water ejected into the liquid introduction path σ flows into each regulating throttle hole 69 and flows through each rectifying throttle hole 69 so that the flow direction of the detergent-liquid mixed water is aligned with the cylinder center line a of the nozzle head body 1 . is rectified (changed direction) in the direction A, and injected into the outer flow path λ1.
Each regulating throttle hole 69 increases the flow velocity of the detergent mixed water flowing through each position throttle hole 69, and directs the flow of the detergent mixed water in the direction A of the cylinder center line a of the nozzle head body 1 to the outer flow channel. Inject at λ1.

The detergent liquid mixture injected into the outer flow path λ1 flows into each mist throttle hole 54 as shown in FIG.

As shown in FIG. 58, the detergent solution water that has flowed into each mist throttle hole 54 flows through the first and second spiral mist flow paths ε1 and ε2, and flows through each mist throttle hole on the side of each nozzle throttle hole 53. It is injected (jetted) into 54 .
By flowing through the first and second spiral mist flow paths ε1 and ε2, the detergent liquid water is decompressed while increasing the flow velocity, and is discharged from the first and second mist flow paths ε1 and ε2 to the respective nozzle apertures 53. The mist is injected into each of the mist throttle holes 54 on the side. Furthermore, through each mist throttle hole 54 and each nozzle throttle hole 53, a large amount of macro bubbles and ultra-fine bubbles are mixed and dissolved into fine detergent liquid water droplets [fine liquid mist (fine detergent liquid water mist). , is sprayed (sprayed) outward (outside) from each nozzle throttle hole 53 (injector Y/spray ring body 31).
As a result, the fine detergent liquid droplets (fine mist) jetted from the first and second mist passages ε1 and ε2 to the respective mist throttle holes 54 become turbulent at high pressure.

When fine mist is injected (sprayed) from each nozzle throttle hole 53, the exit side of each nozzle throttle hole 53 (the side where the fine mist is injected) becomes a negative pressure state.
By setting the outlet side of each nozzle throttle hole 53 to a negative pressure state, the high pressure and turbulent flow flowing out from the first and second mist flow paths ε1 and ε2 to each mist throttle hole 54 on the side of each nozzle throttle hole 53 are reduced. When the fine mist (fine mist of detergent liquid water) passes through the outlet of each mist throttle hole 54, air bubbles are generated by decompression, and the gas (air) entrained at the time of injection is pulverized by turbulence ( In addition to the fine mist, a large amount of fine bubbles and ultra-fine bubbles are mixed, and the melted ultra-fine mist (ultra-fine mist of detergent liquid water) is formed.
Ultra-fine mist of the detergent liquid water is sprayed (sprayed) from each nozzle throttle hole 53 of the injector Y through each mist throttle hole 54 .

The cleaning gun device X manually operates (rotates) the nozzle switching lever 72 to set the nozzle switching valve 3 (switching valve element 95) to the nozzle position V2.
In the nozzle switching valve 3 , the switching valve body 95 is rotated together with the valve body guide body 73 (valve body support plate 83 ) by manual operation of the nozzle switching lever 72 . The switching valve body 95 is rotated while the plate surface 97A of the valve body flat plate 97 is in sliding contact with the plate surface 122A of the valve seat flat plate 122 of the switching valve seat 96 to the nozzle position V2.
32(b), 33(b), 34, and 59, the outflow passage 15 (inflow passage 299) is arranged at the nozzle position V2 for each second liquid outflow from the switching valve body 95. Through the holes 103, 104, the second liquid introduction holes 125, 126 of the switching valve seat 96, the second liquid inflow holes 116, 117, the inner flow path λ2 (switching valve seat 96), the nozzle throttle holes of the nozzle body 33 63.

In the cleaning gun device X, the opening/closing operation lever 270 (opening/closing operation body 8) is manually operated (rotated) at the nozzle position V2 of the nozzle switching valve 3 (switching valve body 95) to rotate the opening/closing valve plate 251 (opening/closing body). 7) to the closed position Z1.

The cleaning gun device X flows (introduces) water from the water supply source 500 into the inflow passage 299 of the gun main body 9 at the nozzle position V2 and the closed position Z1.
Water from the water supply source 500 flows into the inflow channel 299 through the water supply pipe 501 .

In the inflow passage 299, as shown in FIG. 35, the water flows through the liquid inflow hole 299a, the liquid restriction hole 299c and the liquid injection hole 299d, and the outflow passage 15 (small diameter outflow) from the liquid injection hole 299d (inflow passage 299). It is injected into the hole 24). The liquid throttle hole 299c gradually increases the flow velocity of the water and jets it to the liquid jetting hole 299d. The water flowing through the inflow path 299 is jetted to the liquid jetting hole 299d while increasing the flow velocity by flowing through the liquid throttle hole 299c.

In the cleaning gun device X, the water injected into the outflow passage 15 (small diameter outflow hole 24) is a large diameter flow as shown in FIGS. Flowing through the outlet hole 23 [the large-diameter outflow hole 23 (outflow path 15) between the switching valve body 95 and the head step portion 25], the second liquid outflow holes 103 and 104 (switching valve body 95) and the second liquid Through the introduction holes 125, 126 (switching valve seat 96), the second liquid inflow holes 116, 117 (switching valve seat 96) are injected into the inner flow path λ2 (inside the valve seat inner cylindrical portion 113 of the switching valve seat 96). be.

As shown in FIG. 59, the water injected into the inner flow path λ2 flows into the nozzle inner cylindrical portion 62, collides with the blocking plate 65 (nozzle body 33) in the nozzle inner cylindrical portion 62, and becomes turbulent. Become.
The water jetted into the inner flow path λ2 is jetted from each nozzle throttle hole 63 of the nozzle body 33 into the annular outflow flow path τ, as shown in FIG. Each nozzle aperture 63 injects water into the inner flow path λ2 and into the nozzle inner cylindrical portion 62 into the annular outflow path τ. Each nozzle throttle hole 63 increases the flow velocity of the water flowing through the nozzle throttle hole 63 and jets it into the annular outflow path τ.

When water is injected into the annular outflow channel τ, air is introduced (flowed) into the annular channel τ from each of the air inflow holes 48 by the flow of water. As shown in FIG. 59, the air flows out from each air inlet hole 48 to the annular flow path τ.
Each air inlet hole 48 flows out to the plate surface 61A of the nozzle plate 61 adjacent to each nozzle throttle hole 63 in the annular flow path τ.
As a result, the air introduced into the annular outflow path τ is mixed with water at the same time as the air is injected from each nozzle throttle hole 63 .
Air-mixed water (hereinafter referred to as “air-mixed water”) is jetted outward (outside) from an annular flow path τ (injector Y), as shown in FIG. The air-mixed water is made into an annular flow by the guide inner cylindrical portion 47 (spray ring body 31) and the nozzle inner cylindrical portion 62 (nozzle body 33), and is annularly jetted from the annular outflow passage τ.

In the cleaning gun device X, the opening/closing operation lever 270 (opening/closing operation body 8) is manually operated (rotated) at the nozzle position V2 of the nozzle switching valve 3 (switching valve body 95) to rotate the opening/closing valve plate 251 (opening/closing body). 7) is changed from the closed position Z1 to the first open position Z2, the second open position Z3, or the third open position Z4.

In the cleaning gun device X, when the opening/closing valve plate 251 (the opening/closing body 7) is moved from the closed position Z1 to the first opening position Z2, the second opening position Z3, or the third opening position Z4 at the nozzle position V2, As shown in FIGS. 56 and 57, the detergent solution WC in the storage container 4 is moved to the detergent solution outlet tube 6 and the detergent solution outlet hole 220 (detergent solution outlet channel) by the flow of water flowing toward the outlet channel 15. , the first detergent liquid circulation hole 253 (or the second detergent liquid circulation hole 254 or the third detergent liquid circulation hole 255), and the detergent liquid introduction hole 300 (the detergent liquid introduction passage), the inflow path 299 (the liquid injection hole 299d).
The detergent solution WC in the storage container 4 is drawn into the detergent solution outlet hole 220 through the detergent outlet pipe 6 by the flow of water flowing through the inflow channel 299 , and is drawn into the first detergent solution circulation hole 253 or the second detergent solution circulation hole 254 . Alternatively, the liquid is jetted from the detergent liquid introduction hole 300 to the inflow path 15 (liquid injection hole 299d) through the third detergent liquid circulation hole 255 and the detergent liquid introduction hole 300 .
The detergent liquid outflow hole 200 reduces the pressure while increasing the flow velocity of the detergent liquid WC, and injects the detergent liquid WC into the first detergent liquid circulation hole 253, the second detergent liquid circulation hole 254, or the third detergent liquid circulation hole 255. .

In the cleaning gun device X, the detergent liquid WC injected from the detergent liquid introduction hole 300 into the inflow passage 15 (liquid injection hole 299d) is, as shown in FIG. are mixed to form detergent solution mixed water.

5, 32(b), 33(b), 34 and 59, the detergent liquid water injected into the outflow passage 15 (small diameter outflow hole 24) in the cleaning gun device X is: Flowing through the large-diameter outflow hole 23 [between the switching valve body 95 and the head stepped portion 25 (outflow path 15)], the second liquid outflow holes 103, 104 (switching valve body 95) and the second liquid Through the second liquid introduction holes 125 and 126 (switching valve seat 96), from the second liquid inflow holes 116 and 117 (switching valve seat 96) to the inner flow path λ2 (inside the valve seat inner cylindrical portion 113 of the switching valve seat 96) It is ejected.

As shown in FIG. 59, the detergent liquid water injected into the inner flow path λ2 flows into the nozzle inner cylindrical portion 62, collides with the blocking plate 65 (nozzle body 33) in the nozzle inner cylindrical portion 62, and is disturbed. flow.
As shown in FIG. 59, the detergent liquid water jetted into the inner flow path λ2 is jetted from each nozzle throttle hole 63 of the nozzle body 33 into the annular outflow flow path τ. Each nozzle aperture 63 injects water into the inner flow path λ2 and into the nozzle inner cylindrical portion 62 into the annular outflow path τ. Each nozzle throttle hole 63 increases the flow velocity of the water flowing through the nozzle throttle hole 63 and jets it into the annular outflow path τ.

When the detergent liquid water is injected into the annular outflow path τ, air is introduced (flowed) into the annular flow path τ from the air inflow holes 48 by the flow of the detergent liquid water. As shown in FIG. 59, the air flows out from each air inlet hole 48 to the annular flow path τ.
Each air inlet hole 48 flows out to the plate surface 61A of the nozzle plate 61 adjacent to each nozzle throttle hole 63 in the annular flow path τ.
As a result, the air introduced into the annular outflow path τ is mixed with the detergent liquid water at the same time as it is jetted from each nozzle throttle hole 63 .
Air-mixed detergent liquid water (hereinafter referred to as "air-mixed detergent liquid water") is jetted outward (outside) from an annular flow path τ (injector Y), as shown in FIG. The air-mixed detergent liquid water is made into an annular flow by the guide inner cylindrical portion 47 (spray ring body 31) and the nozzle inner cylindrical portion 62 (nozzle body 33), and is annularly jetted from the annular outflow passage τ.

As described above, in the cleaning gun device X, the nozzle switching lever 72 is manually operated to switch the nozzle switching valve 3 between the mist nozzle position V1 and the nozzle position V2, and the opening/closing operation lever 270 is manually operated to switch the opening/closing member 7. By setting the (on-off valve plate 251) to the closed position Z1, the first hole position Z2 (open position), the second hole position Z3, and the third hole position Z4, the object to be washed such as a vehicle is dirty. Accordingly, an extremely fine water mist, an extremely fine detergent liquid mist, an air-mixed water, or an air-mixed detergent water is selected and sprayed from the mist nozzle body 32 or the nozzle body 33 of the injector Y onto the object to be cleaned. can.

INDUSTRIAL APPLICABILITY The present invention is most suitable for washing an object to be washed such as a vehicle.

X Cleaning gun device 1 Nozzle head body 1A One cylinder end 1B of nozzle head body The other cylinder end of nozzle head body Y Injector 2 Valve switching operation body (valve switching operation tool)
3 Nozzle switching valve 4 Storage container 5 Lid 6 Detergent liquid outflow pipe 7 Opening/closing body (opening/closing valve body)
8 Opening/closing operation body (opening/closing operation tool)
9 Gun main body 15 Outflow path 32 Mist nozzle body 33 Nozzle body 72 Open/close operation lever 220 Detergent liquid outflow hole (detergent liquid outflow path)
221 air inflow hole 253 first detergent liquid circulation hole (detergent liquid circulation hole)
254 Second detergent liquid flow hole 255 Third detergent liquid flow hole 270 Open/close operation lever 298 Gun inflow cylindrical portion 298A One end of gun inflow cylindrical portion (one end of inflow path of inflow path)
298B One cylinder end of gun inflow cylindrical part (other inflow path end of inflow path)
299 Inflow path 300 Detergent liquid introduction hole (detergent liquid introduction path)
301 Air introduction hole AR Air introduction space V1 Mist nozzle position V2 Nozzle position Z1 Closed position Z2 First hole open position (open position)
Z3 Second drilling position Z4 Third drilling position

Claim 1 according to the present invention has a nozzle head main body which is formed in a cylindrical shape and has an outflow passage opening at both ends of the cylinder, a mist nozzle body for injecting liquid mist, and a nozzle body for injecting liquid. an injector attached to one cylinder end side of the nozzle head body and communicating the mist nozzle body and the nozzle body with the outflow passage; A nozzle that communicates the passage, or communicates the nozzle body and the outflow passage, and is switched to a mist nozzle position that communicates the mist nozzle body and the outflow passage, or a nozzle position that communicates the nozzle body and the outflow passage. a switching valve, a valve switching operation body arranged in the nozzle head body for manually switching the nozzle switching valve to the mist nozzle position or the nozzle position, and one cylinder end opening and the other cylinder end closing. A storage container formed in a cylindrical shape for storing a detergent solution, a cover body detachably attached to the storage container by closing a cylindrical end opening of the storage container, and a detergent solution arranged in the storage container. an outflow pipe; a gun body attached to the lid with an air introduction space provided therebetween; an opening/closing body accommodated in the air introduction space; an opening/closing operation body having an opening/closing operation lever penetrating and protruding from the gun body; and an air inflow hole penetrating the lid and opening into the air introduction space and the storage container, wherein the detergent outflow pipe is one pipe One end of the tube communicates with the detergent liquid outflow path, and the other tube end is immersed in the detergent liquid stored in the reservoir container, and the gun body includes an inflow path passing through the gun body, a detergent liquid introduction passage disposed in the main body, facing the detergent liquid outflow passage and opening into the air introduction space and opening into the inflow passage; an air introduction hole that is open and communicates with the air inflow hole through the air introduction space, wherein one inflow path end of the inflow path communicates with the outflow path to form the other cylinder of the nozzle head body. The openable/closable body is attached to the end of the inflow path, and water flows in from the other inflow path end of the inflow path. It is disposed between the lid and the gun body, and is in a closed position that blocks the detergent introduction path from the detergent solution outflow path, or an open position that allows the detergent solution outflow path and the detergent introduction path to communicate with each other. The opening/closing operation body is a cleaning gun device characterized in that the opening/closing operation body is set to the closed position or the open position by manual operation of the opening/closing operation lever.

According to a second aspect of the present invention, the opening/closing body is housed in the air introduction space and arranged between the lid plate and the gun body facing the detergent liquid outflow path and the detergent liquid introduction path. An on-off valve plate and a detergent liquid flow hole formed in the on-off valve plate and penetrating the on-off valve plate, the on-off valve plate blocking the detergent liquid introduction path from the detergent liquid outflow path. A closed position or an open position in which the detergent liquid flow hole communicates with the detergent liquid outflow path and the detergent liquid introduction path, respectively, is set, and the opening/closing operation body is manually operated by the opening/closing operation lever to open the opening/closing valve plate. is in the closed position or the open position .

Claim 3 according to the present invention has a nozzle head main body which is formed in a cylindrical shape and has an outflow passage opening at both ends of the cylinder, a mist nozzle body for injecting liquid mist, and a nozzle body for injecting liquid. an injector attached to one cylinder end side of the nozzle head body and communicating the mist nozzle body and the nozzle body with the outflow path; a nozzle switching valve that communicates with the passage or communicates with the nozzle body and the outflow passage; a storage container that is formed in a tubular shape with one tubular end open and the other tubular end closed; A cover detachably attached to the storage container by closing the tubular end opening of the storage container, a detergent solution outlet pipe arranged in the storage container, and the lid are provided with an air introduction space. and an openable/closable body housed in the air introduction space. and an air inflow hole penetrating the lid and opening into the air introduction space and the storage container. A tube end communicates with the detergent liquid outflow path, and the other tube end side is immersed in the detergent liquid stored in the storage container, and the gun body includes an inflow path passing through the gun body, a detergent liquid introduction passage disposed in the main body, facing the detergent liquid outflow passage, opening into the air introduction space and opening into the inflow passage; and a detergent liquid introduction passage penetrating the gun body and opening into the air introduction space. and an air introduction hole that communicates with the air inflow hole through the air introduction space, one end of the inflow path communicates with the outflow path, and the other cylinder end side of the nozzle head main body. water is introduced from the other inflow path end of the inflow path, and the opening/closing body is arranged in the air introduction space so as to face the detergent liquid outflow path and the detergent liquid introduction path, and the cover body and the Disposed between the gun bodies, it is characterized by being in a closed position for blocking the detergent liquid introduction path from the detergent liquid outflow path, or an open position for communicating the detergent liquid outflow path and the detergent liquid introduction path. It is a gun device for cleaning .

Claim 1 according to the present invention has a nozzle head main body which is formed in a cylindrical shape and has an outflow passage opening at both ends of the cylinder, a mist nozzle body for injecting liquid mist, and a nozzle body for injecting liquid. an injector attached to one cylinder end side of the nozzle head body and communicating the mist nozzle body and the nozzle body with the outflow path; A nozzle that communicates the passage, or communicates the nozzle body and the outflow passage, and is switched to a mist nozzle position that communicates the mist nozzle body and the outflow passage, or a nozzle position that communicates the nozzle body and the outflow passage. a switching valve, a valve switching operation body arranged in the nozzle head body for manually switching the nozzle switching valve to the mist nozzle position or the nozzle position, and one cylinder end opening and the other cylinder end closing. A storage container formed in a cylindrical shape for storing a detergent solution, a cover body detachably attached to the storage container by closing a cylindrical end opening of the storage container, and a detergent solution arranged in the storage container. an outflow pipe; a gun body attached to the lid with an air introduction space provided therebetween; an opening/closing body accommodated in the air introduction space; an opening/closing operation body having an opening/closing operation lever penetrating and protruding from the gun body; and an air inflow hole penetrating the lid body and opening into the air introduction space and the storage container, and the detergent outflow pipe has one pipe end side. is connected to the detergent liquid outflow path, and the other tube end side is immersed in the detergent liquid stored in the storage container, and the gun body includes an inflow path passing through the gun body and a a detergent liquid introduction passage arranged to face the detergent liquid outflow passage and open to the air introduction space and open to the inflow passage; an air introduction hole that communicates with the air introduction hole through the air introduction space, and one inflow path end of the inflow path communicates with the outflow path and is attached to the other cylinder end side of the nozzle head body. water is introduced from the other inflow path end of the inflow path, and the opening/closing body is arranged in the air introduction space so as to face the detergent liquid outflow path and the detergent liquid introduction path, and the cover body and the gun main body. The opening/closing operation body is disposed between the detergent solution outflow channel and the detergent solution introduction channel in a closed position that blocks the detergent solution introduction channel, or in an open position that allows the detergent solution outflow channel and the detergent solution introduction channel to communicate with each other. The cleaning gun device is characterized in that the opening/closing body is brought to the closed position or the open position by manual operation of an opening/closing operation lever.

According to a second aspect of the present invention, the opening/closing body is housed in the air introduction space and arranged between the lid body and the gun body facing the detergent liquid outflow path and the detergent liquid introduction path. An on-off valve plate and a detergent liquid flow hole formed in the on-off valve plate and penetrating the on-off valve plate, the on-off valve plate blocking the detergent liquid introduction path from the detergent liquid outflow path. A closed position or an open position in which the detergent liquid flow hole communicates with the detergent liquid outflow path and the detergent liquid introduction path, respectively, is set, and the opening/closing operation body is manually operated by the opening/closing operation lever to open the opening/closing valve plate. is in the closed position or the open position.

Claims (3)

a nozzle head body formed in a cylindrical shape and having an outflow passage opening at both ends of the cylinder;
It has a mist nozzle body that injects liquid mist and a nozzle body that injects liquid, is attached to one cylinder end side of the nozzle head body, and communicates the mist nozzle body and the nozzle body with the outflow path. an injector;
a mist nozzle position disposed within the nozzle head body and communicating the mist nozzle body and the outflow channel, or communicating the nozzle body and the outflow channel and communicating the mist nozzle body and the outflow channel; or a nozzle switching valve that is switched to a nozzle position that communicates the nozzle body and the outflow path;
a valve switching operation body arranged in the nozzle head body for manually switching the nozzle switching valve to the mist nozzle position or the nozzle position;
a storage container formed in a tubular shape with one tubular end open and the other tubular end closed, for storing the detergent liquid;
a lid detachably attached to the storage container by closing the tubular end opening of the storage container;
a detergent liquid outflow pipe disposed in the storage container;
a gun body attached to the lid with an air introduction space between the gun body and the lid;
an opening/closing body housed in the air introduction space;
an opening/closing operation body having an opening/closing operation lever connected to the opening/closing body and protruding from the gun body through the gun body;
The lid is
a detergent liquid outflow path arranged in the lid body and opened to the air introduction space and to the storage container;
an air inflow hole penetrating the lid and opening into the air introduction space and the storage container;
The detergent liquid outflow tube,
one end of the pipe communicates with the detergent solution outlet channel, and the other end of the pipe is immersed in the detergent solution stored in the storage container,
The gun body is
an inflow passage passing through the gun body;
a detergent liquid introduction passage arranged in the gun main body and opened to the air introduction space facing the detergent liquid outflow passage and to the inflow passage;
an air introduction hole that passes through the gun body and opens into the air introduction space and communicates with the air introduction hole through the air introduction space;
One inflow path end of the inflow path communicates with the outflow path and is attached to the other cylinder end side of the nozzle head body, and water flows in from the other inflow path end of the inflow path,
The opening/closing body is
disposed between the cover and the gun body facing the detergent liquid outflow path and the detergent liquid introduction path;
a closed position in which the detergent introduction passage is blocked from the detergent discharge passage, or the detergent discharge passage and the detergent introduction passage are communicated, and the detergent introduction passage is blocked from the detergent discharge passage; an open position that communicates the detergent liquid outflow path and the detergent liquid introduction path;
The opening/closing operation body is
A cleaning gun device, wherein the opening/closing body is set to the closed position or the open position by manually operating the opening/closing operation lever. The opening/closing body is
having a detergent liquid circulation hole that penetrates the opening and closing body,
The detergent fluid circulation hole communicates with the detergent fluid outflow path and the detergent fluid introduction path, respectively, and the closed position or the detergent fluid circulation hole communicates with the detergent fluid outflow path and the detergent fluid introduction path, respectively. is in the drilled position,
The opening/closing operation body is
2. The cleaning gun device according to claim 1, wherein the opening/closing member is set to the open position or the hole opening position by manually operating the opening/closing operation lever. The opening/closing body is
a first detergent liquid circulation hole passing through the opening/closing body;
a second detergent liquid circulation hole formed with a hole diameter different from that of the first detergent liquid circulation hole and penetrating the opening/closing body;
The first detergent fluid flow hole communicates with the detergent fluid outflow path and the detergent fluid introduction path, respectively, or the detergent fluid outflow path and the detergent fluid introduction path are communicated with each other, and the closed position or the first detergent fluid path is maintained. 1. At a first hole opening position where the detergent fluid flow hole communicates with the detergent fluid outflow path and the detergent fluid introduction path, respectively, or at a second hole opening position where the detergent fluid outflow path and the detergent fluid introduction path communicate with each other. is,
The opening/closing operation body is
2. The cleaning gun device according to claim 1, wherein the opening/closing member is placed in the closed position, the first hole-opening position, or the second hole-opening position by manually operating the opening/closing operation lever.

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