JP2020032396A - Trigger type liquid sprayer - Google Patents

Abstract

To suppress a liquid adhering to an inner surface or the like of a spray hole from solidifying.SOLUTION: A relay member 4 extends in a longitudinal direction, and includes a mounting cylinder part 92 on which a nozzle member 5 is mounted. The nozzle member is arranged so as to rotate between a spray position in which a liquid can be sprayed and a spray restricting position in which spraying of the liquid is restricted in a nozzle circumferential direction along an axial line O3 of the mounting cylinder part with respect to the relay member. A spray hole 6 is opened forward, and is eccentrically arranged with respect to the axial line of the mounting cylinder part. A lid body 23, which closes the spray hole from a front side of the spray hole when the nozzle member is positioned in the spray restricting position and opens the spray hole when the nozzle member is positioned in the spray position, is mounted in a fixed state to the relay member 4 or a sprayer main body 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a trigger type liquid ejector.

BACKGROUND ART Conventionally, a trigger type liquid ejector described in Patent Document 1 below is known. This trigger-type liquid ejector is combined with an ejector body attached to a container body containing a liquid, a relay member protruding forward from the ejector body, and the relay member from the front to eject the liquid. And a nozzle member having an ejection hole.
The ejector body extends vertically and is disposed in front of the vertical supply cylinder to suck up the liquid in the container body, and the injection that circulates the liquid in the vertical supply cylinder toward the ejection hole side. A cylinder portion, and a trigger portion disposed in front of the vertical supply cylinder portion so as to be movable rearward in a forward biased state, and by moving the trigger portion rearward, the liquid is moved from inside the vertical supply cylinder portion to inside the injection cylinder portion. And a trigger mechanism that circulates the gas toward the ejection hole side.

JP 2018-108553 A

  By the way, in the above-mentioned conventional trigger type liquid ejector, there is a possibility that the liquid adhering to the inner surface of the ejection hole or the like is dried and solidified, thereby closing the ejection hole.

  The present invention has been made in view of the above-described circumstances, and has as its object to provide a trigger-type liquid ejector capable of suppressing solidification of a liquid attached to an inner surface of an ejection hole or the like.

In order to solve the above problems, the present invention proposes the following means.
A trigger-type liquid ejector according to the present invention includes an ejector main body mounted on a container body containing a liquid, a relay member protruding forward from the ejector main body, and a frontal combination with the relay member. A nozzle member formed with an ejection hole for ejecting a liquid, wherein the ejector main body extends in the up-down direction and sucks the liquid in the container body, and a front side of the vertical supply tube portion. An injection tube portion for circulating the liquid in the vertical supply tube portion toward the ejection hole side, and a trigger disposed in front of the vertical supply tube portion so as to be movable backward in a forward biased state. A trigger mechanism for causing the liquid to flow from the inside of the vertical supply cylinder toward the ejection hole side through the inside of the injection cylinder by moving the trigger backward. And the nozzle member extends The nozzle member is attached to the relay member between a spoutable position at which a liquid can be spouted and a spouting restricted position at which spouting of the liquid is regulated. The nozzle is rotatably disposed in the circumferential direction of the nozzle along the axis of the cylinder, and the ejection hole is opened forward and is eccentrically arranged with respect to the axis of the mounting cylinder. When located at the regulation position, the ejection hole is closed from the front of the ejection hole, and when the nozzle member is located at the ejection enabled position, the lid that opens the ejection hole is the relay member or the cover. It is attached to the ejector body in a fixed state.

According to the trigger-type liquid ejector according to the present invention, when the trigger portion is moved rearward together with the piston, the liquid in the cylinder is supplied into the vertical supply cylinder portion, so that each of the vertical supply cylinder portion and the injection cylinder portion is provided. The internal pressure increases, and the liquid is ejected from the ejection holes.
In addition, when the nozzle member is located at the ejection regulation position, the ejection hole is closed from the front of the ejection hole, and when the nozzle member is located at the ejection-possible position, the lid is provided to open the ejection hole. When the liquid is ejected from the ejection hole, for example, even if the liquid remains in the ejection hole or adheres to the front end of the nozzle member, the liquid is stored in a state where the nozzle member is located at the ejection regulation position. In the meantime, it is possible to suppress that the liquid dries and solidifies, and the ejection holes are blocked.
In addition, since the lid is fixedly attached to the relay member or the ejector body, if the nozzle member is moved from the ejection restricting position to the ejectable position, the operation of detaching the lid from the nozzle member can be performed. Even if this is not performed, the ejection holes are opened, so that deterioration in operability can be prevented.
In addition, since the lid is fixedly attached to the relay member or the ejector main body, if the nozzle member is moved from the spoutable position to the ejection restricting position, the operation of attaching the lid to the nozzle member is performed. Even if not performed, the ejection hole is closed by the lid, and it is possible to suppress forgetting to close the ejection hole with the lid.

  Here, the nozzle member is provided in front of the ejection hole, surrounds the ejection hole, and includes a foaming cylinder in which an outside air introduction hole for introducing outside air is formed inside, and the lid is When the nozzle member is located at the ejection regulating position, the front end opening of the foaming cylinder and the outside air introduction hole are closed, and when the nozzle member is located at the ejectable position, the front end of the foaming cylinder is The opening and the outside air introduction hole may be opened.

In this case, since the nozzle member includes the foaming cylinder, the liquid ejected from the ejection hole enters the inside of the foaming cylinder, so that the inside of the foaming cylinder becomes negative pressure, and the outside air introduction hole formed in the foaming cylinder becomes Outside air is introduced into the foaming cylinder. As a result, the liquid is mixed with the outside air in the foaming tube, foams, becomes foamy, and is ejected from the front end opening of the foaming tube.
Further, when the lid member is located at the ejection regulating position, the front end opening and the outside air introduction hole of the foaming cylinder are closed, and when the nozzle member is located at the ejectable position, the front end of the foaming cylinder is closed. Since the opening and the outside air introduction hole are opened, the liquid adhering to the ejection hole, the outside air introduction hole, and the inner peripheral surface of the foaming cylinder, etc., while storing the nozzle member in the ejection regulation position. Can be suppressed from drying and solidifying, so that not only the ejection holes are closed but also the outside air introduction holes can be suppressed. Therefore, it is possible to stabilize the amount of the liquid ejected from the ejection hole into the foaming cylinder and the amount of the outside air introduced into the foaming cylinder, and prevent the foam quality of the ejected foam from being deteriorated. be able to.

  Further, when the nozzle member is located at the ejection restricting position, the nozzle member regulates rearward movement of the trigger portion by contacting or approaching the trigger portion, and when the nozzle member is located at the ejection enabled position, And a restricting portion that is separated from the trigger portion and allows the trigger portion to move backward.

  In this case, when the nozzle member is located at the ejection regulating position, the regulating member regulates the rearward movement of the trigger portion by contacting or approaching the trigger portion. Therefore, the nozzle member is located at the ejection regulating position. When stored in a state, it is possible to suppress a large pressure from being generated inside the ejector body due to an external force applied to the trigger portion unexpectedly.

  Further, when the nozzle member is located at the ejection regulating position, the regulating portion abuts on or approaches the trigger portion from behind the trigger portion, and the ejector main body includes a front-rear direction with the trigger portion. May be abutted or approached from the front of this part.

In this case, when the nozzle member is located at the ejection restricting position, the restricting portion is disposed in the front-rear gap between the trigger portion and the portion of the ejector body that faces the trigger portion in the front-rear direction. Therefore, when the trigger-type liquid ejector is stored or displayed, it is possible to prevent the regulating portion from being bulky by protruding from the trigger-type liquid ejector.
In addition, when the nozzle member is located at the position where the nozzle can be ejected, the restricting portion retracts from the gap portion and projects from the trigger-type liquid ejector. It is possible to prevent the user from forgetting to move from the ejection enabled position to the ejection restricted position.

  ADVANTAGE OF THE INVENTION According to this invention, solidification of the liquid adhered to the inner surface of the ejection hole or the like can be suppressed.

It is the front view which looked at the trigger type liquid ejector shown as a 1st embodiment concerning the present invention from the front, and is a figure showing the state where the nozzle member was located in the ejection regulation position. FIG. 2 is a cross-sectional view of the trigger type liquid ejector shown in FIG. 1 taken along line II-II. It is the front view which looked at the trigger type liquid ejector shown as a 1st embodiment concerning the present invention from the front, and is a figure showing the state where the nozzle member was located in the position which can be ejected. It is a longitudinal section including the partial appearance of the trigger type liquid ejector shown as a 2nd embodiment concerning the present invention, and is a figure showing the state where the nozzle member was located in the ejection regulation position. It is the front view which looked at the trigger type liquid ejector shown in FIG. 4 from the front.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The trigger type liquid ejector 1 of the present embodiment has a vertical supply cylinder portion 10 for sucking up the liquid in the container A, and the ejector main body 2 mounted on the container A containing the liquid; And a relay member 4 for connecting the ejector main body 2 and the nozzle member 5 to each other. Each component of the trigger type liquid ejector 1 is a molded product using a synthetic resin unless otherwise specified.

  Hereinafter, the direction along the central axis O1 of the vertical supply cylinder portion 10 is referred to as the up-down direction, the container body A side along the up-down direction is the lower side, and the opposite side is the upper side. When viewed from above and below, the side where the nozzle member 5 is located with respect to the vertical supply cylinder 10 is referred to as a front side, and the opposite side is referred to as a rear side. When viewed from above and below, a direction perpendicular to the front and rear direction is referred to as a left and right direction.

  The ejector main body 2 is provided with a vertical supply cylinder 10 extending in the up-down direction, and an injection cylinder that is disposed in front of the vertical supply cylinder 10 and allows the liquid in the vertical supply cylinder 10 to flow toward the ejection holes 6. 11, a trigger mechanism T having a trigger portion 51 disposed in front of the vertical supply cylinder portion 10 so as to be movable in a forward biased state, a vertical supply cylinder portion 10, an injection cylinder portion 11, and a cylinder 53 to be described later. And a cover body 55 that integrally covers the cover from above, from behind, and from the left and right.

The vertical supply cylinder section 10 includes an outer cylinder 12 having a top cylindrical shape, and an inner cylinder 13 fitted in the outer cylinder 12.
The outer cylinder 12 includes a large-diameter portion 12a, a small-diameter portion 12b disposed above the large-diameter portion 12a, and having an inner diameter and an outer diameter smaller than the large-diameter portion 12a, and an upper end portion of the large-diameter portion 12a and a small-diameter portion 12b. And a flange portion 12c connecting the lower end portion. The upper end opening of the small diameter portion 12b is closed by the top wall portion 12d.
The inner cylinder 13 includes a large-diameter portion 13a, a small-diameter portion 13b disposed above the large-diameter portion 13a and having an inner diameter and an outer diameter smaller than the large-diameter portion 13a, and an upper end portion of the large-diameter portion 13a and a small-diameter portion 13b. And a flange portion 13c connecting the lower end portion.

  The upper part of the pipe 15 which is disposed in the container A and whose lower end opening is located at the bottom (not shown) of the container A is fitted in the small diameter portion 13b of the inner cylinder 13. The flange 13c of the inner cylinder 13 is located lower than the flange 12c of the outer cylinder 12. A gap S1 is provided between the flange 13c of the inner cylinder 13 and the flange 12c of the outer cylinder 12.

In the large-diameter portion 13a of the inner cylinder 13, a portion protruding downward from the large-diameter portion 12a of the outer cylinder 12 is formed with an annular flange portion 13d protruding radially outward. The flange 13d is provided in the upper end of the mounting cap 3 mounted (for example, screwed) on the mouth A1 of the container A, and locks the upper end of the mounting cap 3 rotatably around its axis. The flange 13d is vertically sandwiched between the mounting cap 3 and the upper edge of the opening at the mouth A1 of the container A.
The central axis O <b> 1 of the vertical supply cylinder portion 10 including the outer cylinder 12 and the inner cylinder 13 is eccentric to the rear with respect to the container axis of the container body A.

A discharge valve 30 is provided in the upper end of the inner cylinder 13 so as to be elastically deformable in the vertical direction.
The discharge valve 30 is fitted into the inner cylinder 13, and is disposed below the base 31, which is in contact with the lower surface of the top wall 12 d of the outer cylinder 12. A valve body 33 that comes into contact with the valve seat 32 formed in a shape from above, and a hollow spring portion 34 that connects the base portion 31 and the valve body 33 up and down are provided.

  The valve body 33 is pressed from above by the hollow spring portion 34 and is in close contact with the valve seat 32. The valve body 33 blocks communication between a space located above the valve seat 32 and a space located below the valve seat 32 in the inner cylinder 13. The valve body 33 rises against the urging force of the hollow spring portion 34 and separates from the valve seat 32, so that the space located above the valve seat 32 in the inner cylinder 13 and the valve seat 32 Also communicates with the space located below.

An annular tapered cylindrical portion 35 protruding inward is formed on a portion of the inner peripheral surface of the inner cylinder 13 that is located below the valve seat 32 and above the upper end of the pipe 15. I have. The diameter of the tapered tube portion 35 is gradually reduced toward the bottom. A ball valve 36 that is separably seated on the inner peripheral surface of the tapered tubular portion 35 is disposed inside the tapered tubular portion 35.
The ball valve 36 blocks communication between a space located above the tapered tube 35 and a space located below the tapered tube 35 in the inner tube 13. The ball valve 36 rises and separates from the inner peripheral surface of the tapered tube portion 35, so that the space located inside the inner tube 13 above the tapered tube portion 35 and the space located below the tapered tube portion 35. To communicate with the space.

The injection cylinder 11 extends in the front-rear direction, and has a rear end connected to a front side of an upper end of the vertical supply cylinder 10. The inside of the injection cylinder 11 communicates with the inside of the vertical supply cylinder 10 through an outer discharge hole 16 formed in the outer cylinder 12 and an inner discharge hole 17 formed in the inner cylinder 13. The inner discharge hole 17 is open in the inner cylinder 13 in a space located above the valve seat 32.
In the outer cylinder 12, a cylinder mounting cylinder 40 protruding forward is formed in a portion located below the injection cylinder portion 11. The cylinder mounting cylinder 40 is open forward. The lower end of the cylinder mounting cylinder 40 is formed integrally with the flange 12 c of the outer cylinder 12.

  The trigger mechanism T causes the liquid to flow from the vertical supply cylinder 10 through the ejection cylinder 11 toward the ejection hole 6 by moving the trigger 51 backward. The trigger mechanism T includes a trigger portion 51 disposed in front of the vertical supply cylinder portion 10 so as to be movable rearward in a forward biased state, a piston 52 that moves in the front-rear direction in conjunction with the trigger portion 51, And a cylinder 53 whose inside communicates with the vertical supply cylinder 10.

The cylinder 53 is fitted into the cylinder mounting cylinder 40 and has an outer cylinder part 60 opened forward, a rear wall part 61 closing a rear end opening of the outer cylinder part 60, and a central part of the rear wall part 61. And a front-end cylindrical piston guide 62 projecting forward from the front end and having a closed front end.
The outer cylinder part 60, the piston guide 62, and the cylinder mounting cylinder 40 are arranged coaxially with the cylinder axis O2 extending in the front-rear direction.

The inner side of the piston guide 62 is opened rearward, and a projection projecting forward from the rear wall (small diameter portion 12b of the outer cylinder 12) is fitted into the opening.
The outer peripheral surface of the outer cylinder part 60 and the inner peripheral surface of the cylinder mounting cylinder 40 are in close contact at both ends in the front-rear direction. An annular gap S <b> 2 is provided at an intermediate portion located between both ends in the front-rear direction, between the outer peripheral surface of the outer cylinder portion 60 and the inner peripheral surface of the cylinder mounting cylinder 40.

  A first ventilation hole 63 that communicates the inside of the outer cylinder 60 with the gap S2 is formed in the outer cylinder 60. A second ventilation hole 64 is formed in the flange portion 12c of the outer cylinder 12 so as to communicate the gap S2 and the gap S1 between the flange portion 12c of the outer cylinder 12 and the flange portion 13c of the inner cylinder 13. . A third ventilation hole 65 is formed in the flange portion 13 c of the inner cylinder 13 to communicate the gap S <b> 1 with the large-diameter portion 13 a of the inner cylinder 13 and the inside of the mounting cap 3.

A cylinder portion 66 is formed on the rear wall portion 61 of the cylinder 53 so as to project rearward and open in the front-rear direction. The cylindrical portion 66 is formed at a portion of the rear wall portion 61 located above the piston guide 62. The tubular portion 66 is fitted in a through hole formed in the rear wall of the cylinder mounting tube 40 (the small diameter portion 12b of the outer tube 12).
Here, a second through hole 67 communicating with the inside of the tubular portion 66 is formed in the small diameter portion 13b of the inner cylinder 13. The second through-hole 67 is located in the inner cylinder 13 in a space located below the valve seat 32 and above the tapered cylinder portion 35.

  As described above, the inside of the cylinder 53 and the inside of the vertical supply cylinder 10 communicate with each other through the inside of the cylinder 66 and the second through hole 67. Further, the discharge valve 30 switches between the communication between the inside of the injection cylinder 11 and the inside of the cylinder 53 and the shutoff thereof, and the ball valve 36 switches between the communication between the inside of the container A and the inside of the cylinder 53 and the shutoff thereof.

  At the upper end of the cylinder 53, a mounting protrusion 53a that protrudes upward and extends rearward is provided. A gap is provided between the mounting projection 53a and the outer peripheral surface of the outer cylinder 60. The mounting projection 53a is formed in a plate-like shape with the front and back faces in the up-down direction. At the center of the mounting protrusion 53a in the left-right direction, a fine hole that opens rearward, penetrates vertically, and extends in the front-rear direction is formed. An insertion plate 115 that connects the upper end of the cylinder mounting cylinder 40 and the lower end of the rear part of the injection cylinder 11 and whose front and back faces in the left-right direction is inserted into the small hole.

  The piston 52 includes a cylindrical connecting portion 70 connected to the trigger portion 51, and a piston cylinder 71 located behind the connecting portion 70 and having a larger diameter than the connecting portion 70. It is formed in an open cylindrical shape. The piston 52 is arranged coaxially with the cylinder axis O2.

The piston cylinder 71 is opened rearward and has a piston body 72 into which the piston guide 62 is inserted. The piston cylinder 71 projects radially outward from the rear end of the piston body 72 and A sliding cylinder portion 73 that comes into close sliding contact with the inner peripheral surface of the portion 60.
The inner diameter of the piston body 72 is larger than the outer diameter of the piston guide 62. A gap is provided between the inner peripheral surface of the piston main body 72 and the outer peripheral surface of the piston guide 62.
The diameter of the sliding cylinder 73 gradually increases from the center in the front-rear direction toward the front and the rear, and lip portions located at both ends in the front-rear direction slide on the inner peripheral surface of the outer cylinder 60. Move.

  The connecting portion 70 of the piston 52 is connected to the trigger portion 51 via a connecting shaft 86 described later. Thus, the piston 52 is urged forward by the elastic plate portion 54 described later together with the trigger portion 51, and moves backward as the trigger portion 51 moves backward and is pushed into the cylinder 53.

  When the trigger part 51 is located at the foremost movement position, the sliding cylinder part 73 of the piston 52 closes the first ventilation hole 63. Then, when the piston 52 moves rearward by a predetermined amount due to the rearward movement of the trigger portion 51, the sliding cylinder portion 73 opens the first ventilation hole 63. Thereby, the inside of the container body A communicates with the outside through the third ventilation hole 65, the gap S1, the second ventilation hole 64, the gap S2, and the first ventilation hole 63.

  The trigger portion 51 includes a main plate portion 80 having a front surface curved concavely rearward in a side view as viewed from the left and right, and a pair of side plate portions 81 projecting rearward from both left and right ends of the main plate portion 80. And.

  A pair of connecting plates 82 extending upward and sandwiching the injection cylinder 11 in the left-right direction are formed at upper ends of the pair of side plates 81. Each of the pair of connecting plates 82 is separately provided with a rotating shaft 83 protruding outward in the left-right direction. The rotating shaft 83 is rotatably supported by a bearing provided on an upper plate member 84 that covers the upper part of the injection cylinder 11. Thus, the trigger portion 51 can swing in the front-rear direction about the rotation shaft portion 83.

A connecting cylinder 85 extending rearward is formed at the upper end of the main plate 80. A pair of connecting shafts 86 protruding in the left-right direction toward the inside of the connecting tube 85 are formed at the rear of the inner peripheral surface of the connecting tube 85. The connecting shaft 86 is inserted into a connecting hole formed in the connecting portion 70 of the piston 52. Thus, the trigger portion 51 and the piston 52 are connected to each other.
The connecting portion 70 of the piston 52 is rotatable around the axis thereof with respect to the connecting shaft 86 and is connected to be movable by a predetermined amount in the vertical direction.

The upper plate member 84 in the form of a horizontal plate connected to the top wall 12 d of the outer cylinder 12 in the vertical supply cylinder 10 is attached to the upper surface of the injection cylinder 11.
Elastic plate portions 54 are formed at both ends of the upper plate member 84 in the left-right direction, each having an arc shape projecting forward in a side view as viewed from the left-right direction, and extending to below the injection cylinder portion 11. The elastic plate portion 54 has a concentric arc shape in a side view as viewed from the left and right directions, and includes a pair of leaf springs arranged in front and rear.

The lower ends of the pair of leaf springs are connected via a folded portion projecting downward in a side view as viewed from the left and right directions. A locking piece 54d projecting downward is formed in the folded portion, and the locking piece 54d is inserted from above into a pocket portion 81a formed in the side plate portion 81 of the trigger portion 51.
Thereby, the elastic plate portion 54 urges the trigger portion 51 forward through the locking piece 54d and the pocket portion 81a.

The upper end portion of the main plate portion 80 of the trigger portion 51 is in contact with the lower end portion of the partition wall 90 of the relay member 4 described later from behind by the bias of the elastic plate portion 54. Thereby, the trigger part 51 is positioned at the foremost movement position.
When the trigger portion 51 is pulled rearward and moves from the frontmost movement position, the locking piece 54d moves rearward, and the elastic plate portion 54 is elastically deformed. At this time, the locking piece 54d keeps being engaged with the pocket portion 81a while rising with respect to the pocket portion 81a.

  The relay member 4 is combined with the ejector main body 2 from the front. The relay member 4 is combined with the injection cylinder 11 from the front, and projects forward from the ejector main body 2. The relay member 4 includes a partition wall 90 that covers the front end opening of the injection tube portion 11 from the front, an outer fitting tube portion 91 that extends rearward from the partition wall 90, and is externally fitted to the injection tube portion 11, and a front portion from the partition wall 90. A first mounting cylinder portion 92 extending toward the nozzle member 5 to which the nozzle member 5 is mounted, and a guide shaft portion 94 extending forward from a portion of the partition wall 90 located inside the first mounting cylinder portion 92. .

The positions in the front-rear direction of the front edge of the partition wall 90 and the front edge of the cover body 55 are equivalent to each other. The first mounting cylinder portion 92 and the guide shaft portion 94 are disposed coaxially with a center axis O3 extending in the front-rear direction. The central axis O3 is located below the central axis of the injection cylinder 11.
Hereinafter, when viewed from the front-back direction, a direction intersecting the center axis O3 is referred to as a nozzle radial direction, and a direction circling around the center axis O3 is referred to as a nozzle circumferential direction.

At an intermediate portion in the front-rear direction of the first mounting cylinder portion 92, a mounting flange portion 106 protruding outward in the nozzle radial direction and extending over the entire circumference is formed.
The guide shaft portion 94 is formed in a cylindrical shape with a closed top end and a rearward opening. The guide shaft portion 94 is formed so as to fit inside the first mounting cylinder 92 without protruding forward from the first mounting cylinder 92.
The shape of the guide shaft portion 94 is not limited to this case, and may be, for example, a solid columnar shape.

A communication hole 95 that communicates with the inside of the injection cylinder 11 is formed in a portion of the partition 90 that is located above the guide shaft 94 and inside the first mounting cylinder 92. Thereby, the annular space 96 defined between the guide shaft portion 94 and the first mounting cylinder portion 92 communicates with the inside of the injection cylinder portion 11 through the communication hole 95.
A first switching groove 97 extending in the front-rear direction and opening forward is formed on the outer peripheral surface on the front end side of the guide shaft portion 94. Two first switching grooves 97 are formed at regular intervals in the nozzle circumferential direction. However, the number of the first switching grooves 97 is not limited to two, and for example, one or three or more may be formed.

  The nozzle member 5 is assembled to the relay member 4 from the front by being mounted on the relay member 4 via the first mounting tubular portion 92. The nozzle member 5 is attached to the relay member 4 so as to be rotatable around the central axis O3.

  The nozzle member 5 includes a nozzle wall portion 100 that covers the front end face of the guide shaft portion 94 and the front end opening of the first mounting cylinder portion 92 from the front, and extends rearward from the nozzle wall portion 100 to form the first mounting cylinder portion 92. And a second mounting cylinder 101 rotatably fitted to the nozzle wall 100 in a state where the nozzle wall 100 is prevented from slipping forward, and a portion of the nozzle wall 100 located inside the second mounting cylinder 101 toward the rear. A second fitting cylinder portion 102 extending outward and rotatably fitted to the guide shaft portion 94; and extending rearward from the nozzle wall portion 100 and rotatable about the central axis O3 inside the first mounting cylinder portion 92. A support cylinder portion 105 fitted to the nozzle wall portion, a nozzle tip 107 protruding forward from the nozzle wall portion 100, a cap mounting cylinder portion 108 protruding forward from the nozzle wall portion 100 and surrounding the nozzle tip 107 from the outside in the nozzle radial direction, cap Fitted into the wear sleeve portion 108 includes a nozzle cap 109 for covering the front end face of the nozzle tip 107 from the front, the.

A gap 110 in which the first switching groove 97 opens is provided between the rear surface of the nozzle wall portion 100 and the front end surface of the guide shaft portion 94. A connection hole 111 that opens into the gap 110 is formed in the nozzle wall 100.
The nozzle tip 107 is formed in a solid columnar shape, and is disposed eccentric upward with respect to the central axis O3. A nozzle communication groove 112 extending over the entire length in the front-rear direction and communicating with the connection hole 111 is formed on the outer peripheral surface of the nozzle tip 107.
The nozzle cap 109 is formed in the shape of a cylinder with a top closed at the front, and the ejection hole 6 penetrating in the front-rear direction is formed in the top wall. The ejection hole 6 is disposed eccentrically upward with respect to the central axis O3. The ejection hole 6 communicates with the first switching groove 97 of the guide shaft portion 94 through the nozzle communication groove 112 of the nozzle tip 107, the connection hole 111 of the nozzle wall 100, and the gap 110.

The second mounting cylinder part 101 is provided on the outer peripheral edge of the nozzle wall part 100. The rear end opening edge of the second mounting cylinder 101 is in contact with or close to the front surface of the mounting flange 106 of the first mounting cylinder 92.
The second fitting cylinder portion 102 covers the first switching groove 97 of the guide shaft portion 94 from the outside in the nozzle radial direction over the entire area. The rear end edge of the second fitting cylinder portion 102 is located behind the first switching groove 97. A second switching groove 103 extending in the front-rear direction and opening rearward is formed on the inner peripheral surface of the second fitting cylindrical portion 102. The second switching groove 103 is open to the annular space 96. Two second switching grooves 103 are formed at regular intervals in the nozzle circumferential direction. Note that the number of the second switching grooves 103 is not limited to two, and may be one or three or more, for example, and is preferably arranged corresponding to the first switching grooves 97.

By changing the relative positions of the nozzle member 5 and the relay member 4 in the circumferential direction of the nozzle, the communication between the first switching groove 97 and the second switching groove 103 and the interruption thereof can be switched. That is, the nozzle member 5 is disposed on the relay member 4 so as to be rotatable in the nozzle circumferential direction between a spoutable position at which the liquid can be spouted and a spouting restricted position at which the spouting of the liquid is regulated. ing.
When the nozzle member 5 is located at the ejection restricting position, the communication between the first switching groove 97 and the second switching groove 103 is cut off, and the second fitting cylindrical portion 102 of the nozzle member 5 and the guide shaft of the relay member 4 are connected. The space between the portion 94 is sealed. Therefore, when the nozzle member 5 is stored in a state where the nozzle member 5 is located at the ejection regulating position, the internal pressure of the ejector main body 2 is increased due to, for example, an increase in the environmental temperature and the pressing force applied to the container body A. Even if the pressure rises, it is possible to prevent the liquid from leaking from the ejection holes 6.

  Further, the nozzle member 5 is disposed in front of the ejection hole 6 and surrounds the ejection hole 6 and has an outside air introduction hole 26 formed therein for introducing outside air. When the nozzle member 5 is located at the regulating position, the rearward movement of the trigger portion 51 is restricted by contacting or approaching the trigger portion 51, and when the nozzle member 5 is located at the ejectable position, the trigger member 51 is separated from the trigger portion 51, and And a regulating portion 28 that allows the portion 51 to move backward.

The foaming cylinder 27 is externally fitted to the cap mounting cylinder 108. When viewed from the front, the foaming cylinder 27 and the nozzle wall 100 have a circular shape, and the foaming cylinder 27 is disposed so as to be inscribed in the nozzle wall 100.
The outside air introduction hole 26 extends in the front-rear direction, opens at the front surface of the foaming tube 27, and communicates with a passage hole 27 a located inside the foaming tube 27 in front of the nozzle cap 109. A plurality of outside air introduction holes 26 are provided around the ejection holes 6 at intervals.

  The restricting portion abuts or approaches the cylinder 53 from the front of the cylinder 53 when the nozzle member 5 is located at the ejection regulating position, and separates from the cylinder 53 when the nozzle member 5 is located at the ejectable position. The restricting portion 28 is disposed between a rear portion of the trigger portion 51 and a lower end portion of a front opening edge of the cylinder 53. The restricting portion 28 is formed in a plate shape with the front and back faces in the vertical direction. The restricting portion 28 has a rectangular shape with a pair of sides extending in the front-rear direction and a pair of remaining sides extending in the left-right direction when viewed from the up-down direction. Among the side surfaces of the regulating portion 28, the front surface facing forward contacts or approaches the trigger portion 51, and the rear surface facing backward contacts or approaches the front end opening edge of the cylinder 53. When viewed from the front, the center in the left-right direction of the regulating portion 28 is shifted to the right with respect to the center in the left-right direction of each of the trigger portion 51 and the cylinder 53. When viewed from the front, the central portion in the left-right direction of the regulating portion 28 may be shifted to the left with respect to the central portion in the left-right direction of each of the trigger portion 51 and the cylinder 53.

  The restricting portion 28 is connected to the second mounting cylinder portion 101 via a connecting portion 29. The connecting portion 29 includes a first connecting portion 29a extending downward from the second mounting cylinder portion 101, and a second connecting portion 29b extending forward from the restricting portion.

The first connecting portion 29a extends downward from the lower end of the second mounting tubular portion 101. The first connecting portion 29a is arranged forward of the trigger portion 51. The lower portion of the first connecting portion 29a is located on the right side of the trigger portion 51 when viewed from the front.
The second connecting portion 29b extends rearward from the lower end of the first connecting portion 29a. The second connecting portion 29b is connected to the right end of the regulating portion 28. The second connecting portion 29b is located on the right side of the trigger portion 51. The length of the second connecting portion 29b in the front-rear direction is equal to the length of the first connecting portion 29a in the vertical direction.

Further, the trigger type liquid ejector 1 includes a coating cylinder member 20.
The coating cylinder member 20 includes a main body cylinder 21 in which the second mounting cylinder portion 101 is rotatably fitted around the central axis O3 inside, and protrudes rearward from the rear end of the main body cylinder 21 to form the first mounting cylinder. A fixing portion 22 surrounding the mounting flange portion 106 of the portion 92 from the outside in the nozzle radial direction, and a lid 23 disposed at the front end of the main body cylinder 21 are provided.

The main body cylinder 21 is formed with a window hole 21a through which the first connecting portion 29a is inserted. The window hole 21a is formed over the entire length of the main body cylinder 21 in the front-rear direction. The window 21a extends in the circumferential direction of the nozzle, and the first connecting portion 29a moves inside the window 21a as the nozzle member 5 moves between the ejection restricting position and the ejectable position.
Inside the main body cylinder 21, a foaming cylinder 27 is disposed so as to be inscribed in the main body cylinder 21 when viewed from the front. The rear end opening edge of the main body cylinder 21 is in contact with or close to the front surface of the mounting flange portion 106.

The fixing portion 22 is formed in a rectangular frame shape arranged coaxially with the central axis O, and is arranged so that the main body cylinder 21 is inscribed when viewed from the front. The fixing portion 22 extends continuously over the entire circumference. The rear opening edge of the fixing portion 22 is close to the front edge of the cover 55 in the front-rear direction. A locking protrusion 24 is formed on the fixing portion 22 and protrudes inward in the nozzle radial direction, and is in contact with or near the rear surface of the mounting flange portion 106. The covering flange member 106 is sandwiched in the front-rear direction by the locking projection 24 and the rear end opening edge of the main body cylinder 21, so that the covering cylinder member 20 is fixedly attached to the relay member 4. The locking projection 24 is formed at a corner of the fixed portion 22.
In addition, the covering cylinder member 20 may be fixedly attached to the ejector main body 2.

  The lid 23 protrudes downward from the upper end of the main body tube 21. The lid 23 is formed in a plate shape with the front and back faces in the front-rear direction. The lid 23 closes the ejection hole 6 from the front of the ejection hole 6 when the nozzle member 5 is located at the ejection regulation position, and opens the ejection hole 6 when the nozzle member 5 is located at the ejection enabled position. I do. In the illustrated example, when the nozzle member 5 is located at the ejection restricting position, the lid 23 closes the front end opening of the passage hole 27a of the foaming cylinder 27 and the outside air introduction hole 26, and the nozzle member 5 can eject. When it is located at the position, the front end opening of the passage hole 27a and the outside air introduction hole 26 are opened. A bulging portion is formed on the rear surface of the lid 23 so as to be detachably fitted to the front end opening of the passage hole 27a when the nozzle member 5 is located at the ejection regulating position.

Next, the operation of the trigger type liquid ejector 1 configured as described above will be described.
It is assumed that the liquid is filled in each part of the trigger type liquid ejector 1 by a plurality of operations of the trigger part 51.

First, the nozzle member 5 is rotated counterclockwise about the central axis O3 with respect to the relay member 4, and is moved from the ejection restricting position shown in FIGS. 1 and 2 to the ejectable position shown in FIG. . Thereby, the first switching groove 97 and the second switching groove 103 communicate with each other.
At this time, the front end opening of the passage hole 27a and the outside air introduction hole 26 are opened by the foaming cylinder 27 rotating around the central axis O3 with respect to the lid 23. In the illustrated example, the front end opening of the passage hole 27a and the outside air introduction hole 26 move obliquely downward to the left with respect to the lid 23 and are opened when viewed from the front. Further, at this time, the restricting portion 28 is retracted from between the rear portion of the trigger portion 51 and the lower end portion of the front opening edge of the cylinder 53, and projects rightward from the cover body 55 when viewed from the front.

  When the trigger portion 51 is pulled backward against the urging force of the elastic plate portion 54, the piston 52 retreats with the rearward movement of the trigger portion 51, so that the liquid in the cylinder 53 flows inside the cylinder portion 66. And it is introduced into the inner cylinder 13 of the vertical supply cylinder part 10 through the second through hole 67. Then, the liquid introduced into the inner cylinder 13 pushes down the ball valve 36 to close the valve and pushes up the discharge valve 30 to open the valve, so that the liquid is pressurized and the inside discharge hole 17 and the outside discharge It is supplied into the injection cylinder 11 through the hole 16.

  Then, the liquid supplied into the injection cylinder portion 11 is discharged through the communication hole 95, the annular space 96, the second switching groove 103, the first switching groove 97, the gap 110, the connection hole 111, and the nozzle communication groove 112. And is ejected from the ejection hole 6 into the passage hole 27 a of the foaming cylinder 27. At this time, the inside of the passage hole 27a becomes a negative pressure, outside air (air) is introduced into the foaming cylinder 27 through the outside air introduction hole 26, and the liquid is mixed with the outside air in the passage hole 27a to foam and foam. And is ejected from the front end opening of the passage hole 27a.

  When the trigger portion 51 is released after the ejection of the liquid, the trigger portion 51 is urged forward by the restoring force of the elastic plate portion 54 to return to the original position, and accordingly, the piston 52 moves forward. Therefore, a negative pressure is generated in the cylinder 53, and the negative pressure causes the ball valve 36 to rise and open with the discharge valve 30 closed, and the liquid in the container A is supplied vertically through the pipe 15. The liquid is sucked up by the cylinder portion 10 and introduced into the cylinder 53 through the second through hole 67 and the inside of the cylinder portion 66.

Then, the nozzle member 5 is rotated clockwise around the central axis O3 with respect to the relay member 4 to move the nozzle member 5 from the ejectable position shown in FIG. 3 to the ejection regulating position shown in FIGS. Thus, communication between the first switching groove 97 and the second switching groove 103 is interrupted.
At this time, the front end opening of the passage hole 27a and the outside air introduction hole 26 are closed by the lid 23 by rotating the foaming cylinder 27 around the central axis O3 with respect to the lid 23. Further, at this time, the restricting portion 28 enters between the rear portion of the trigger portion 51 and the lower end portion of the front opening edge of the cylinder 53, and abuts on or contacts the rear portion of the trigger portion 51 and the front opening edge of the cylinder 53. Be close.

  As described above, according to the trigger type liquid ejector 1 according to the present embodiment, when the nozzle member 5 is located at the ejection regulating position, the ejection hole 6 is closed from the front of the ejection hole 6 and the nozzle member 5 is closed. When the liquid is ejected from the ejection hole 6 when the liquid is ejected from the ejection hole 6, for example, the liquid remains in the ejection hole 6, or the nozzle member 5 is provided. Even if the liquid adheres to the front end of the nozzle 5, the liquid is dried and solidified while the nozzle member 5 is stored in the state where the nozzle member 5 is located at the ejection regulating position, and the ejection hole 6 is blocked. Can be suppressed.

Further, since the lid 23 is fixedly attached to the relay member 4, the operation of detaching the lid 23 from the nozzle member 5 is possible by moving the nozzle member 5 from the ejection restricting position to the spoutable position. Even without performing the above, the ejection hole 6 is opened, so that deterioration in operability can be prevented.
In addition, since the lid 23 is fixedly attached to the relay member 4, the lid 23 is attached to the nozzle member 5 by moving the nozzle member 5 from the jettable position to the jetting restriction position. Even if the operation is not performed, the ejection hole 6 is closed by the lid 23, and it is possible to prevent the ejection hole 6 from being forgotten to be closed by the lid 23.

  When the nozzle member 5 is located at the ejection restricting position, the lid 23 closes the front end opening of the passage hole 27a of the foaming cylinder 27 and the outside air introduction hole 26, and the nozzle member 5 is located at a position where the nozzle member 5 can eject. When the nozzle member 5 is stored, the front end opening of the passage hole 27a and the outside air introduction hole 26 are opened. , And the liquid adhering to the inner peripheral surfaces of the passage holes 27a can be prevented from drying and solidifying, so that not only the ejection holes 6 are closed but also the outside air introduction holes 26 are closed. Can be suppressed. Therefore, it is possible to stabilize the amount of the liquid ejected from the ejection hole 6 to the passage hole 27a of the foaming cylinder 27 and the amount of the outside air introduced into the passage hole 27a, and to improve the foam quality of the ejected foam. Can be prevented from deteriorating.

  Further, when the nozzle member 5 is located at the ejection regulating position, the regulating member 28 is provided to regulate the rearward movement of the trigger portion 51 by contacting or approaching the trigger portion 51. Therefore, the nozzle member 5 is moved to the ejection regulating position. When stored in the state of being located at a position, a large pressure can be suppressed from being generated inside the ejector main body 2 due to an external force applied to the trigger portion 51 unexpectedly. Therefore, when the nozzle member 5 is stored in a state where the nozzle member 5 is located at the ejection restricting position, even if an external force is unexpectedly applied to the trigger portion 51, for example, the nozzle member 5 may come off from the relay member 4, 5 can be prevented from being unable to ensure the sealing performance between the second fitting cylindrical portion 102 and the guide shaft portion 94 of the relay member 4.

In addition, when the nozzle member 5 is located at the ejection regulating position, the regulating portion 28 is disposed in the gap between the trigger portion 51 and the cylinder 53 in the front-rear direction, so that the storage of the trigger type liquid ejector 1 or At the time of display or the like, it is possible to prevent the regulating portion 28 from protruding from the trigger-type liquid ejector 1 and bulking.
Further, when the nozzle member 5 is located at the position where the nozzle member 5 can be ejected, the restricting portion 28 retreats from the gap between the trigger portion 51 and the cylinder 53 in the front-rear direction and projects from the trigger-type liquid ejector 1. When the liquid is stored after being ejected, it is possible to prevent the nozzle member 5 from being forgotten to be moved from the ejectable position to the ejection restricted position.

  Next, a second embodiment according to the present invention will be described, but the basic configuration is the same as that of the first embodiment. For this reason, the same components are denoted by the same reference numerals, and the description thereof will be omitted. Only different points will be described.

In the trigger type liquid ejector 7 of the present embodiment, as shown in FIGS. 4 and 5, the size in the front-rear direction at the rear part of the main body cylinder 21 is the same as that of the second mounting cylinder part 101 in the first connection part 29a. A window hole 21b having a size equivalent to the size of the connecting portion in the front-rear direction is formed. In the fixed portion 22, an intermittent portion 22a having the same length as the window hole 21b in the nozzle circumferential direction is formed at a portion connected to the window hole 21b in the front-rear direction.
As described above, according to the trigger type liquid ejector 7 according to the present embodiment, since the intermittent portion 22a is formed in the fixing portion 22, the coating tubular member 20 can be easily attached to the relay member 4. .

  Note that the technical scope of the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, the configuration in which the front end opening of the passage hole 27a is located on the left side of the center axis O3 when viewed from the front when the nozzle member 5 is moved from the ejection regulation position to the ejection enabled position is shown. However, when the nozzle member 5 is moved from the ejection regulating position to the ejection-possible position, the front end opening of the passage hole 27a may be located at the center in the left-right direction of the nozzle wall 100 when viewed from the front. Good.
Further, in the above-described embodiment, the configuration in which the nozzle member 5 includes the foaming cylinder 27 and the regulating portion 28 has been described, but a nozzle member having no such a member 27 or 28 may be employed.

Further, in the above-described embodiment, when the nozzle member 5 is located at the ejection restricting position, the restricting portion 28 abuts on or comes close to the cylinder 53 from the front of the cylinder 53. A portion of the container body 2 that faces the trigger portion 51 in the front-rear direction may be in contact with or approach from the front of this portion. For example, a projection is formed on the outer cylinder 12 so as to project forward from the large-diameter portion 12a, and when the nozzle member 5 is located at the ejection regulation position, the regulating portion 28 You may make it contact or approach from front.
Further, the nozzle member 5 may include a pressure accumulating mechanism that opens and closes the on-off valve to eject the liquid from the ejection hole 6 when the pressure in the internal space exceeds a predetermined value.

  In the embodiment, when the nozzle member 5 is located at the ejection restricting position, the communication between the first switching groove 97 and the second switching groove 103 is interrupted, and the second fitting cylinder portion 102 of the nozzle member 5 In addition to sealing between the guide shaft portion 94 of the relay member 4 and the guide shaft portion 94, the regulating portion 28 regulates the rearward movement of the trigger portion 51 by abutting or approaching the trigger portion 51, thereby ejecting the liquid. However, by restricting only one of the seal between the second fitting cylinder portion 102 and the guide shaft portion 94 and the restriction of the rearward movement of the trigger portion 51, the ejection of the liquid is restricted. You may.

  In addition, without departing from the spirit of the present invention, it is possible to appropriately replace the components in the above-described embodiment with known components, and the above-described modifications may be appropriately combined.

1, 7 trigger type liquid ejector 2 ejector main body 4 relay member 5 nozzle member 6 ejection hole 10 vertical supply cylinder portion 11 injection cylinder portion 23 lid 26 outside air introduction hole 27 foaming cylinder 28 regulating section 51 trigger section 52 piston 53 Cylinder 92 mounting cylinder (first mounting cylinder)
A Container body T Trigger mechanism O3 Axis (center axis)

Claims (4)

An ejector body attached to the container body containing the liquid,
A relay member protruding forward from the ejector body,
A nozzle member combined with the relay member from the front, and formed with an ejection hole for ejecting liquid,
The ejector body,
A vertical supply cylinder extending vertically and sucking up liquid in the container body;
An injection cylinder that is disposed in front of the vertical supply cylinder and allows the liquid in the vertical supply cylinder to flow toward the ejection hole side.
A trigger portion disposed in front of the vertical supply tube portion so as to be movable rearward in a forward biased state, and by moving the trigger portion rearward, liquid is transferred from the inside of the vertical supply tube portion to the inside of the injection tube portion. And a trigger mechanism that circulates toward the ejection hole side through
The relay member extends in the front-rear direction, and includes a mounting cylinder portion on which the nozzle member is mounted.
The nozzle member is disposed between an ejection position at which the liquid can be ejected and an ejection regulation position at which the ejection of the liquid is regulated. It is arranged rotatably in the direction,
The ejection hole is open toward the front, and is disposed eccentrically with respect to the axis of the mounting cylinder portion,
When the nozzle member is located at the ejection regulating position, the ejection hole is closed from the front of the ejection hole, and when the nozzle member is located at the ejection-possible position, a lid that opens the ejection hole, A trigger-type liquid ejector fixedly attached to the relay member or the ejector body. The nozzle member is disposed in front of the ejection hole, and includes a foaming cylinder surrounding the ejection hole, and having an outside air introduction hole for introducing outside air inside.
The lid closes the front end opening of the foaming cylinder and the outside air introduction hole when the nozzle member is located at the ejection regulating position, and when the nozzle member is located at a position where the nozzle member can be ejected, 2. The trigger type liquid ejector according to claim 1, wherein a front end opening of the foam tube and the outside air introduction hole are opened.   When the nozzle member is located at the ejection regulating position, the nozzle member regulates the rearward movement of the trigger portion by contacting or approaching the trigger portion, and separates from the trigger portion when located at the ejection enabled position. The trigger-type liquid ejector according to claim 1, further comprising a regulating portion that allows the trigger portion to move backward.   When the nozzle member is located at the ejection regulating position, the regulating portion abuts or approaches the trigger portion from behind the trigger portion, and faces the trigger portion of the ejector body in the front-rear direction. The trigger type liquid ejector according to claim 3, wherein the trigger-type liquid ejector is abutted or approached from a front portion of the portion.

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