JP3239232U - Nozzle head, nozzle and fluid ejection device - Google Patents

Abstract

A nozzle head, a nozzle, and a fluid ejection device that contribute to improved convenience are provided. A nozzle head includes a body (40) and a movable member (41); The movable member has a first through hole 44A for discharging the fluid in the first mode and a second opening 42B for discharging the fluid in the second mode. 2 through-holes 44B are provided, and when the movable member is moved, a state in which the first opening and the second opening are communicated through the first through-hole, and a state in which the first opening is communicated through the second through-hole. and a state in which the portion and the second opening communicate with each other. [Selection drawing] Fig. 2

Description

The present invention relates to nozzle heads, nozzles and fluid ejection devices.

2. Description of the Related Art A compressed fluid discharge device capable of discharging high-pressure fluid such as compressed air is known (Patent Document 1). Such a compressed fluid discharge device can quickly remove, for example, chips, water droplets, and the like deposited on the work and the like.

WO2019/073834

In recent years, further improvements in convenience have been desired.

SUMMARY OF THE INVENTION An object of the present invention is to provide a nozzle head, a nozzle, and a fluid ejection device that contribute to improved convenience.

A nozzle head according to one aspect of an embodiment is a nozzle head that can be attached to a fluid ejection portion that ejects a fluid, and includes a body and a movable member provided in the body, wherein the body includes the fluid A first opening into which the fluid discharged from the discharge portion can flow and a second opening into which the fluid flowing from the first opening can be discharged are formed. a first through hole for discharging the fluid in a mode, and a second through hole for discharging the fluid in a second mode different from the first mode. By moving the movable member, a state in which the first opening and the second opening are communicated through the first through hole, and a state in which the first opening is communicated through the second through hole and a state in which the second opening communicates with the second opening.

A nozzle according to another aspect of the embodiment includes the nozzle head described above and a nozzle tube to which the nozzle head is attached.

A fluid ejection device according to still another aspect of the embodiment includes the nozzle head described above.

A fluid ejection device according to still another aspect of the embodiment includes the nozzle described above.

According to the present invention, it is possible to provide a nozzle head, a nozzle, and a fluid ejecting device that can easily switch between fluid ejection in the first mode and fluid ejection in the second mode.

FIG. 1 is an exploded view showing a fluid ejection device having a nozzle head according to the first embodiment. FIG. 2 is an exploded perspective view showing the nozzle head according to the first embodiment. 3A and 3B are side views showing movable members provided in the nozzle head according to the first embodiment. 4A and 4B are perspective views showing the nozzle head according to the first embodiment. FIG. 5A and 5B are cross-sectional views showing the nozzle head according to the first embodiment. FIG. 6 is an exploded view showing a fluid ejection device having a nozzle head according to the second embodiment. FIG. 7 is an exploded perspective view showing the nozzle head according to the second embodiment. FIG. 8 is a perspective view showing part of the nozzle head according to the second embodiment. 9A to 9D are side views showing movable members provided in the nozzle head according to the second embodiment. 10A and 10B are perspective views showing the nozzle head according to the second embodiment. 11A and 11B are cross-sectional views showing the nozzle head according to the second embodiment.

For example, at one work station, it may be necessary to dispense fluid in different ways. More specifically, it may be necessary to perform high pressure discharge (high discharge pressure blow) and continuous blow. In such a case, for example, a fluid ejection device for high-pressure ejection and a fluid ejection device for continuous blow may be prepared. Also, high-pressure ejection and continuous blow may be performed by replacing the nozzle head for high-pressure ejection and the nozzle head for continuous blow. However, when preparing a fluid ejection device for high-pressure ejection and a fluid ejection device for continuous blow, an increase in cost or the like is caused. In addition, when replacing the nozzle head for high-pressure discharge and the nozzle head for continuous blow, the work efficiency is lowered.

[First embodiment]
A nozzle head, nozzles, and fluid ejection device according to the first embodiment will be described with reference to the drawings. FIG. 1 is an exploded view showing a fluid ejection device having a nozzle head according to this embodiment. FIG. 2 is an exploded perspective view showing the nozzle head according to this embodiment. 3A and 3B are side views showing movable members provided in the nozzle head according to this embodiment. FIG. 3A shows a state in which the movable member 41 is viewed along the central axis of the first through hole 44A for discharging fluid in the first mode. FIG. 3B shows a state in which the movable member 41 is viewed along the central axis of the second through hole 44B for discharging fluid in the second mode. 4A and 4B are perspective views showing the nozzle head according to this embodiment. FIG. 4A shows a state in which the nozzle head 10 is set to eject fluid in the first manner. More specifically, FIG. 4A shows the nozzle head 10 set for high pressure ejection. FIG. 4B shows a state in which the nozzle head 10 is set to eject fluid in the second mode. More specifically, FIG. 4B shows the nozzle head 10 set for continuous blow. 5A and 5B are cross-sectional views showing the nozzle head according to this embodiment. FIG. 5A shows a state in which the nozzle head 10 is set to eject fluid in the first mode. More specifically, FIG. 5A shows the nozzle head 10 set for high pressure ejection. FIG. 5B shows a state in which the nozzle head 10 is set to eject fluid in the second mode. More specifically, FIG. 5B shows the nozzle head 10 set for continuous blow.

As shown in FIG. 1, the nozzle head 10 according to this embodiment can be attached to a nozzle tube 12 . That is, the nozzle head 10 can be attached to a fluid ejector that ejects fluid. The nozzle head 10 is attachable/detachable to/from a nozzle tube (fluid ejection section) 12 . A nozzle 14 is configured by the nozzle head 10 and the nozzle tube 12 .

Nozzle 14 may be attached to fluid ejector 16 . Nozzle 14 is removable from fluid ejector 16 . Fluid ejector 16 may include, but is not limited to, an air blow gun. A fluid ejection device 18 is composed of the nozzle 14 and the fluid ejector 16 .

As the fluid ejector 16, for example, a known air blow gun or the like described in Patent Document 1 can be used. Therefore, detailed description of the fluid ejector 16 is omitted. Note that the fluid ejector 16 is not limited to the air blow gun described in Patent Document 1.

Fluid ejector 16 includes a housing 20 and a lever 22 . The shape of the housing 20 can be, for example, a gun-like shape, but is not limited to this.

Housing 20 includes a handle 24 , a supply portion 26 and a discharge portion 28 . The handle 24 is gripped by a user (operator). Compressed air is supplied to the supply unit 26 from a compressed air supply source (not shown). A nozzle 14 is attached to the ejection portion 28 . Inside the housing 20, there is provided a flow path (not shown) that allows the supply portion 26 and the discharge portion 28 to communicate with each other. Further, inside the housing 20, a valve portion (not shown) for opening and closing the flow path is further provided. The valve portion opens and closes in conjunction with the operation of the lever 22 . For example, when the lever 22 is pulled, the valve portion is opened. Further, when the lever 22 is not pulled, the valve portion is closed.

When the handle 24 is gripped by the user and the lever 22 is pulled by the user, the supply section 26 and the discharge section 28 communicate with each other. Compressed air is supplied from the discharge portion 28 to the nozzle 14 when the supply portion 26 and the discharge portion 28 are communicated with each other. When the lever 22 is not pulled by the user, the supply section 26 and the discharge section 28 are not communicated with each other. When the supply portion 26 and the discharge portion 28 do not communicate with each other, the supply of compressed air from the discharge portion 28 to the nozzle 14 is stopped.

Nozzle 14 includes nozzle head 10 and nozzle tube 12 as described above. Nozzle 14 further comprises a joint portion 30 and a joint portion 32 . The nozzle pipe 12 is configured by, for example, a circular pipe. The joint part 30 is for fixing the nozzle head 10 to the nozzle pipe 12 . The joint portion 30 is hollow. The nozzle head 10 is attached to the tip (one end) of the nozzle pipe 12 via the joint portion 30 . The joint part 32 is for fixing the rear end (the other end) of the nozzle pipe 12 to the discharge part 28 provided in the fluid discharger 16 . The joint portion 32 is formed in a hollow shape. The joint portion 32 may be composed of a body 34, a union nut 36, and a sleeve 38, but is not limited to this. The rear end of the nozzle tube 12 can be attached to the ejection portion 28 provided in the fluid ejector 16 via a joint portion 32 . Compressed air can flow into the nozzle pipe 12 from the discharge portion 28 via the joint portion 32 . The nozzle pipe 12 guides the compressed air flowing into the nozzle pipe 12 to the nozzle head 10 via the joint portion 30 . The inner diameter of the nozzle tube 12 is, for example, about 10 mm, but is not limited to this.

As shown in FIG. 2, the nozzle head 10 has a body 40 and a movable member 41 . The body 40 is provided with an opening 42A and an opening 42B. A fluid discharged from the tip of the nozzle tube 12 can flow into the opening (first opening) 42A. That is, the fluid discharged from the fluid discharge portion can flow into the opening 42A. The opening (second opening) 42B can discharge the fluid that has flowed in from the opening 42A.

The outer shape of the movable member 41 is, for example, substantially cylindrical. The body 40 is provided with a hole 46 into which the movable member 41 is inserted. The cross-sectional shape of the hole 46 is circular, for example. The movable member 41 is inserted into the hole 46 . A center axis L1 of the hole 46 intersects an axis L2 passing through the center of the opening 42A and the center of the opening 42B. More specifically, the center axis L1 of the hole 46 is orthogonal to the axis L2 passing through the center of the opening 42A and the center of the opening 42B. The movable member 41 is rotatable within the hole 46 . That is, the movable member 41 is a rotating member 41A that can rotate within the hole 46 .

The movable member 41 is provided with a first through hole 44A and a second through hole 44B. 44 A of 1st through-holes are through-holes for discharging a fluid in a 1st aspect. More specifically, the first through hole 44A is a through hole for high pressure discharge. The second through hole 44B is a through hole for discharging fluid in a second mode different from the first mode. More specifically, the second through hole 44B is a through hole for continuous blow. 44 A of 1st through-holes and the 2nd through-hole 44B penetrate the side surface 48 of 41 A of rotation members. That is, the first through hole 44A and the second through hole 44B penetrate the side surface 48 of the rotating member 41A along the rotation axis L3. The first through hole 44A and the second through hole 44B are formed so as to intersect when viewed in the axial direction along the rotation axis L3. More specifically, the first through-hole 44A and the second through-hole 44B are formed to intersect perpendicularly when viewed in the axial direction along the rotation axis L3.

As shown in FIGS. 3A and 3B, the first through hole 44A is provided with an inflow opening 44Ab into which the fluid flows and a discharge opening 44Aa from which the fluid is discharged. The opening size of the discharge opening 44Aa and the opening size of the inflow opening 44Ab can be, for example, the same, but are not limited to this. For example, the opening size of the discharge opening 44Aa may be smaller than the opening size of the inflow opening 44Ab. When the opening size of the discharge opening 44Aa is smaller than the opening size of the inflow opening 44Ab, the cross-sectional area (opening size) of the discharge opening 44Aa corresponds to the effective cross-sectional area of the first through hole 44A.

The second through hole 44B is provided with an inflow opening 44Bb into which the fluid flows and a discharge opening 44Ba from which the fluid is discharged. The opening size of the discharge opening 44Ba and the opening size of the inflow opening 44Bb can be, for example, the same, but are not limited to this. For example, the opening size of the discharge opening 44Ba may be smaller than the opening size of the inflow opening 44Bb. When the opening size of the discharge opening 44Ba is smaller than the opening size of the inflow opening 44Bb, the cross-sectional area (opening size) of the discharge opening 44Ba corresponds to the effective cross-sectional area of the second through hole 44B.

The opening size of the discharge opening 44Aa provided in the first through hole 44A is larger than the opening size of the discharge opening 44Ba provided in the second through hole 44B. That is, the effective cross-sectional area of the discharge opening 44Aa provided in the first through-hole 44A is larger than the effective cross-sectional area of the discharge opening 44Ba provided in the second through-hole 44B. Since the effective cross-sectional area of the first through hole 44A is sufficiently large, when the opening 42A and the opening 42B are in communication via the first through hole 44A, compressed air supplied from the fluid ejector 16 is is discharged from the first through hole 44A without any particular limitation. That is, in such a state, compressed air supplied from the fluid ejector 16 at a relatively high peak pressure is ejected from the first through hole 44A without any particular restrictions. Therefore, in a state where the opening 42A and the opening 42B communicate with each other through the first through hole 44A, the fluid is discharged in the first manner. More specifically, in such a state, high-pressure ejection, in which fluid is ejected at a relatively high peak pressure, can be achieved. In addition, since the compressed air supplied from the fluid ejector 16 is ejected from the first through hole 44A without any particular restriction, the period during which high pressure ejection is performed is relatively short. Moreover, since the compressed air supplied from the fluid ejector 16 is ejected from the first through hole 44A without any particular restrictions, the pressure of the fluid when it reaches the ejection destination is relatively high. On the other hand, since the effective cross-sectional area of the second through-hole 44B is sufficiently small, when the opening 42A and the opening 42B communicate with each other through the second through-hole 44B, the compressed air is discharged through the second through-hole 44B. It is largely restricted by hole 44B. Therefore, in a state where the openings 42A and 42B communicate with each other through the second through holes 44B, the fluid is discharged in a second mode different from the first mode. More specifically, in such a state, fluid is continuously discharged over a long period of time. That is, in a state where the openings 42A and 42B communicate with each other through the second through holes 44B, continuous blowing can be achieved. In addition, since the discharge of the fluid is greatly restricted by the second through holes 44B, the pressure of the fluid when it reaches the discharge destination is relatively low. That is, the pressure applied to the discharge destination by the fluid discharged in the first mode is higher than the pressure applied to the discharge destination by the fluid discharged in the second mode.

As shown in FIG. 2, the nozzle head 10 is further provided with a sealing member 50 . The sealing member 50 seals the hole 46 into which the movable member 41 is inserted. A sealing member 50 is provided on the bottom surface of the body 40 . The sealing member 50 is provided with a plurality of screw holes 50a. The lower surface of the body 40 is provided with screw holes (not shown). The sealing member 50 is fixed to the body 40 using screws 52, for example.

The nozzle head 10 is further provided with an operation portion 54 . The operation unit 54 can be operated by the user to move the movable member 41 . The operating portion 54 is provided with a plurality of screw holes 54a. The movable member 41 is also provided with a plurality of screw holes 42a. The operating portion 54 is fixed to the movable member 41 by screws 55 . The movable member 41 moves as the operating portion 54 is moved. More specifically, the rotating member 41A rotates as the operating portion 54 rotates.

A concave portion 54 b is formed in the operating portion 54 . The concave portion 54b is open on the lower surface of the operating portion 54. As shown in FIG. The upper surface of the body 40 is formed with a hole 40a into which the pin 56 is inserted. The pin 56 is inserted into the hole 40a. The upper portion of the pin 56 inserted into the hole 40a protrudes from the body 40. As shown in FIG. A portion of the pin 56 that protrudes from the body 40 is positioned within a recess 54 b formed in the operating portion 54 .

As shown in FIG. 4A, when the pin 56 is in contact with one end of the recess 54b, the opening 42A (see FIG. 2) and the opening 42B communicate with each other via the first through hole 44A. When the movable member 41 is rotated by 90 degrees by rotating the operating portion 54 by 90 degrees, the state shown in FIG. 4B is obtained. As shown in FIG. 4B, when the pin 56 is in contact with the other end of the recess 54b, the openings 42A and 42B communicate with each other via the second through hole 44B. By moving the movable member 41, the opening 42A and the opening 42B communicate with each other via the first through hole 44A and the opening 42A and the opening 42B communicate with each other via the second through hole 44B. state can be switched. Rotation of the operating portion 54 is restricted by a pin 56 .

As described above, according to the present embodiment, the first through hole 44A for discharging the fluid in the first mode and the second through hole 44B for discharging the fluid in the second mode are the movable members. 41. By moving the movable member 41, a state in which the openings 42A and 42B communicate with each other through the first through-hole 44A and a state in which the openings 42A and 42B communicate with each other through the second through-hole 44B. and can be switched. Therefore, according to the present embodiment, it is possible to easily switch between ejection of fluid in the first mode and ejection of fluid in the second mode without replacing the nozzle head 10 . Therefore, according to this embodiment, it is possible to contribute to an improvement in work efficiency.

[Second embodiment]
A nozzle head, nozzles, and fluid ejection device according to the second embodiment will be described with reference to the drawings. FIG. 6 is an exploded view showing a fluid ejection device having a nozzle head according to this embodiment. FIG. 7 is an exploded perspective view showing the nozzle head according to this embodiment. FIG. 8 is a perspective view showing part of the nozzle head according to this embodiment. FIG. 8 shows the movable member 41 and the cylindrical body 58 . 9A to 9D are side views showing movable members provided in the nozzle head according to this embodiment. FIG. 9A shows the inflow opening 44Bb of the second through hole 44B for discharging the fluid in the second mode. FIG. 9B shows the discharge opening 44Aa of the first through hole 44A for discharging the fluid in the first mode. FIG. 9C shows the ejection opening 44Ba of the second through-hole 44B for ejecting the fluid in the second mode. FIG. 9D shows the inflow opening 44Abb of the first through hole 44A for discharging the fluid in the first manner. 10A and 10B are perspective views showing the nozzle head according to this embodiment. FIG. 10A shows a state in which the nozzle head 10 is set to eject fluid in the first mode. More specifically, FIG. 10A shows the nozzle head 10 set for high pressure ejection. FIG. 10B shows a state in which the nozzle head 10 is set to eject fluid in the second mode. More specifically, FIG. 10B shows the nozzle head 10 set for continuous blow. 11A and 11B are cross-sectional views showing the nozzle head according to this embodiment. FIG. 11A shows a state in which the nozzle head 10 is set to eject fluid in the first mode. More specifically, FIG. 11A shows the nozzle head 10 set for high pressure ejection. FIG. 11B shows a state in which the nozzle head 10 is set to eject fluid in the second manner. More specifically, FIG. 11B shows the nozzle head 10 set for continuous blow. The same components as those of the nozzle head and the like according to the first embodiment shown in FIGS. 1 to 5B are denoted by the same reference numerals, and description thereof is omitted or simplified.

The nozzle head 10 according to this embodiment can suppress noise during ejection.

As shown in FIG. 7, a discharge opening 44Aa is provided at one end of the first through hole 44A. The discharge opening 44Aa consists of a plurality of partial discharge openings 44Aaa. As shown in FIG. 11B, the plurality of partial discharge openings 44Aaa are arranged radially around the central axis L4 of the first through hole 44A when viewed in the axial direction along the central axis L4 (see FIG. 7) of the first through hole 44A. is distributed to The discharge opening 44Aa consists of, for example, three partial discharge openings 44Aaa, but is not limited to this.

As shown in FIG. 8, an opening 44Aba is provided at the other end of the first through hole 44A (see FIG. 7). A cylindrical member 58 is inserted into the opening 44Aba. The tubular member 58 is, for example, cylindrical. As a material for the cylindrical member 58, for example, a porous material can be used. Examples of such porous materials include, but are not limited to, polyvinyl formal resins. Such polyvinyl formal resins include, for example, the trade name "Bell Eater A" manufactured by Aion Co., Ltd., and the like. The average pore size of the product is 80-200 μm. The opening 58a of the cylindrical member 58 constitutes the inflow opening 44Abb of the first through hole 44A.

As shown in FIG. 11B, the center C1 of each of the plurality of partial discharge openings 44Aaa is displaced from the center C2 of the inflow opening 44Abb in an axial view along the central axis L4 of the first through hole 44A. That is, the center C1 of each of the plurality of partial discharge openings 44Aaa is displaced from the central axis L4 when viewed in the axial direction along the central axis L4 of the first through hole 44A. A part of each of the plurality of partial discharge openings 44Aaa overlaps the inflow opening 44Abb when viewed in the axial direction along the center axis L4. More specifically, another part of each of the plurality of partial discharge openings 44Aaa overlaps the tubular member 58 when viewed in the axial direction along the central axis L4. In other words, another portion of each of the plurality of partial discharge openings 44Aaa overlaps the peripheral edge portion of the inflow opening 44Abb when viewed in the axial direction along the center axis L4.

The flow velocity of the compressed air that has flowed in through the inflow opening 44Abb is maximized on the central axis L4 of the first through hole 44A. In the present embodiment, the center C1 of each of the plurality of partial discharge openings 44Aaa is shifted from the central axis L4 when viewed in the axial direction along the central axis L4 of the first through hole 44A. Moreover, according to the present embodiment, when viewed in the axial direction along the center axis L4, it is a part of each of the plurality of partial discharge openings 44Aa that overlaps the inflow opening 44Abb. That is, the other part of each of the partial discharge openings 44Aaa overlaps the tubular member 58 when viewed in the axial direction along the center axis L4. Since the discharge opening 44Aa of the first through-hole 44A is configured in this way, according to the present embodiment, it is possible to suppress noise during discharge while maintaining the discharge pressure of the compressed air.

[Modified embodiment]
The present invention is not limited to the above-described embodiments, and can adopt various configurations without departing from the gist of the invention.

For example, in the above embodiment, the nozzle head 10 is connected to the fluid ejector 16 via the nozzle tube 12 . may be worn. That is, the nozzle head 10 may be attached to a discharge section (fluid discharge section) 28 provided in the fluid discharger 16 .

Further, in the above embodiment, the case where the first through-hole 44A and the second through-hole 44B are formed so as to intersect the rotation axis L3 of the rotating member 41A has been described as an example, but the present invention is not limited to this. For example, the first through hole 44A and the second through hole 44B may be formed along the rotation axis of the rotating member. That is, a revolver type rotating member may be used. In this case, the rotating member is arranged such that the axis L2 passing through the center of the opening 42A and the center of the opening 42B coincides with the rotation axis of the rotating member.

Further, in the above-described embodiment, the case where the movable member 41 is the rotating member 41A has been described as an example, but the present invention is not limited to this. For example, the movable member may be configured by a slide member that can be slid. The slide member is provided with a first through hole 44A and a second through hole 44B. In this case, switching can be performed by sliding the slide member.

Further, the following additional remarks are disclosed with respect to the above embodiment.

(Appendix 1)
A nozzle head (10) that can be attached to a fluid ejection part (28, 12) that ejects a fluid, comprising a body (40) and a movable member (41) provided in the body, the body is formed with a first opening (42A) into which the fluid discharged from the fluid discharge part can flow, and a second opening (42B) into which the fluid flowing from the first opening can be discharged. , the movable member has a first through-hole (44A) which is a through-hole for discharging the fluid in a first mode, and a second mode for discharging the fluid in a second mode different from the first mode. A second through hole (44B) is provided as a through hole for the movement of the movable member so that the first opening and the second opening communicate with each other through the first through hole. and a state in which the first opening and the second opening communicate with each other via the second through hole. According to such a configuration, by moving the movable member, the state in which the first opening and the second opening are communicated through the first through hole, and the state in which the first opening is communicated through the second through hole. The state of communicating with the second opening is switched. Therefore, according to such a configuration, it is possible to easily switch between ejection of fluid in the first mode and ejection of fluid in the second mode without replacing the nozzle head. Therefore, according to such a configuration, it is possible to contribute to an improvement in work efficiency.

(Appendix 2)
In the nozzle head according to Supplementary Note 1, the first aspect may be high-pressure ejection, and the second aspect may be continuous blow.

(Appendix 3)
In the nozzle head according to Appendix 1,
A pressure applied to the discharge destination by the fluid discharged in the first mode may be higher than a pressure applied to the discharge destination by the fluid discharged in the second mode.

(Appendix 4)
In the nozzle head according to item 3,
In the second aspect, the fluid may be discharged continuously.

(Appendix 5)
In the nozzle head according to any one of appendices 1 to 4, the effective cross-sectional area of the discharge opening (44Aa) provided in the first through hole is equal to the effective cross-sectional area of the discharge opening (44Ba) provided in the second through hole. It may be larger than the cross-sectional area.

(Appendix 6)
In the nozzle head according to any one of Appendices 1 to 5, the opening diameter of the ejection opening provided in the first through hole may be larger than the opening diameter of the ejection opening provided in the second through hole.

(Appendix 7)
In the nozzle head according to any one of Appendices 1 to 6, the movable member is a rotating member ( 41A), wherein the first through hole and the second through hole penetrate a side surface (48) along the rotation axis (L3) of the rotating member, and the first through hole and the second The two through holes may be formed so as to intersect when viewed in the axial direction along the rotation axis.

(Appendix 8)
In the nozzle head according to Supplementary Note 7, the outer shape of the rotating member may be substantially cylindrical.

(Appendix 9)
9. The nozzle head according to any one of appendices 1 to 8, wherein the first through hole includes an inflow opening (44Abb) into which the fluid flows and an ejection opening (44Aa) into which the fluid is ejected, The discharge opening is composed of a plurality of partial discharge openings (44Aaa), and the center (C1) of each of the plurality of partial discharge openings is located in the axial direction along the central axis (L4) of the first through hole. It may be offset from the center (C2) of the inflow opening, and a part of each of the partial discharge openings may overlap the inflow opening when viewed in the axial direction. According to such a configuration, it is possible to suppress noise during discharge while maintaining the discharge pressure of the compressed air.

(Appendix 10)
In the nozzle head according to Appendix 9, the inflow opening may be an opening (58a) of a cylindrical member (58) inserted into the first through hole.

(Appendix 11)
In the nozzle head according to appendix 9 or 10, the ejection opening may consist of three partial ejection openings.

(Appendix 12)
12. The nozzle head according to any one of Appendices 1 to 11, further comprising an operation section (54) that can be operated by a user to move the movable member, and the movable member is moved as the operation section is moved. may move. With such a configuration, it is possible to improve the operability when switching between the fluid ejection in the first mode and the fluid ejection in the second mode.

(Appendix 13)
The nozzle (14) comprises a nozzle head according to any one of Appendices 1 to 12, and a nozzle pipe (12) to which the nozzle head is attached.

(Appendix 14)
A fluid ejection device (18) comprises a nozzle head according to any one of Appendices 1-12.

(Appendix 15)
A fluid ejection device comprises a nozzle according to Appendix 13.

It should be noted that the present invention is not limited to the above disclosure, and can adopt various configurations without departing from the gist of the present invention.

10: Nozzle head 12: Nozzle tube 14: Nozzle 16: Fluid ejector 18: Fluid ejector 20: Housing 22: Lever 24: Handle 26: Supply part 28: Discharge part 30, 32: Joint part 34, 40: Body 36 : Union nut 38: Sleeves 40a, 46: Hole 41: Movable member 41A: Rotating member 42A, 42B: Openings 42a, 50a, 54a: Screw hole 44A: First through holes 44Aa, 44Ba: Discharge opening 44Aaa: Partial discharge Openings 44Ab, 44Abb, 44Bb: Inflow openings 44Aba, 58a: Opening 44B: Second through hole 48: Side surface 50: Sealing members 52, 55: Screw 54: Operation part 54b: Concave portion 56: Pin 58: Cylindrical member C1, C2: center L1, L4: center axis L2: axis L3: rotation axis

Claims (15)

A nozzle head that can be attached to a fluid ejection part that ejects a fluid,
body and
a movable member provided in the body;
with
The body is formed with a first opening into which the fluid discharged from the fluid discharge part can flow, and a second opening into which the fluid flowing from the first opening can be discharged,
The movable member includes a first through hole for discharging the fluid in a first mode and a through hole for discharging the fluid in a second mode different from the first mode. A second through hole is provided,
By moving the movable member, a state in which the first opening and the second opening communicate with each other via the first through hole, and a state in which the first opening and the second opening communicate with each other via the second through hole A nozzle head that can be switched between a state in which it communicates with the second opening. The nozzle head according to claim 1,
The first aspect is high pressure discharge,
A said 2nd aspect is a nozzle head which is a continuous blow. The nozzle head according to claim 1,
The nozzle head, wherein the pressure applied to the discharge destination by the fluid discharged in the first mode is higher than the pressure applied to the discharge destination by the fluid discharged in the second mode. In the nozzle head according to claim 3,
In the second aspect, the nozzle head in which the fluid is continuously discharged. The nozzle head according to claim 1,
A nozzle head, wherein an effective cross-sectional area of a discharge opening provided in the first through hole is larger than an effective cross-sectional area of a discharge opening provided in the second through hole. The nozzle head according to claim 1,
A nozzle head, wherein an opening diameter of a discharge opening provided in the first through hole is larger than an opening diameter of a discharge opening provided in the second through hole. The nozzle head according to claim 1,
The movable member is a rotating member inserted into a hole provided in the body and capable of rotating within the hole,
The first through hole and the second through hole penetrate a side surface of the rotating member along the rotation axis,
The nozzle head, wherein the first through hole and the second through hole are formed so as to intersect when viewed in an axial direction along the rotation axis. In the nozzle head according to claim 7,
The nozzle head, wherein the outer shape of the rotating member is substantially cylindrical. The nozzle head according to claim 1,
The first through hole includes an inflow opening into which the fluid flows and a discharge opening into which the fluid is discharged,
the discharge opening comprises a plurality of partial discharge openings;
the center of each of the plurality of partial discharge openings is displaced from the center of the inflow opening when viewed in an axial direction along the central axis of the first through hole;
A nozzle head, wherein a part of each of the partial discharge openings overlaps the inflow opening when viewed in the axial direction. In the nozzle head according to claim 9,
The nozzle head, wherein the inflow opening is configured by an opening of a cylindrical member inserted into the first through hole. In the nozzle head according to claim 9,
The nozzle head, wherein the ejection opening consists of three partial ejection openings. The nozzle head according to claim 1,
further comprising an operation unit that allows a user to perform an operation for moving the movable member;
A nozzle head, wherein the movable member moves in accordance with movement of the operation portion. A nozzle head according to any one of claims 1 to 12;
and a nozzle tube to which the nozzle head is attached. A fluid ejection device comprising the nozzle head according to any one of claims 1 to 12. A fluid ejection device comprising the nozzle of claim 13 .

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