Trigger-type liquid sprayer

Abstract

To provide a trigger-type liquid sprayer that does not leak liquid even when a load is applied to the trigger portion in the lateral direction due to wrapping or the like.SOLUTION: A trigger-type liquid sprayer 1 according to the present invention comprises: a vertical supply tube portion 10, which sucks up liquid in a container body A; an injection tube portion 30, which extends forward from the vertical supply tube portion 10; and a trigger mechanism 20, which introduces the liquid into an injection tube portion 30 from inside the vertical supply tube portion 10 by rearward movement of a forward-biased trigger portion 21. A pair of support pieces 60 is provided at an upper end of the trigger portion 21, the support pieces extending upward while being spaced apart away from each other in a lateral direction and pivotally supported on both sides in the lateral direction of the injection tube portion 30; and a deformation control portion 70 is arranged between the pair of support pieces 60 below the injection tube portion 30, and the deformation control portion abuts or comes closer to the pair of support pieces 60 in the lateral direction at least when the trigger portion 21 is located at a forwardmost position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a trigger-type liquid ejector. [Background technology]

[0002] Trigger-type liquid ejectors are known that suck up liquid from a container by operating a trigger and eject the liquid through an ejection hole. One such trigger-type liquid ejector, as shown in Patent Document 1 below, includes a ejector body that is attached to a container containing the liquid, and a nozzle part that has an ejection hole formed therein that ejects the liquid forward.

[0003] The ejector body includes a vertical supply tube that sucks up the liquid in the container body, an injection tube that extends forward from the vertical supply tube, and a trigger mechanism that introduces the liquid from the vertical supply tube into the injection tube and injects it from the injection tube toward the nozzle hole by moving a forward-biased trigger backward. The trigger mechanism includes a cylinder located behind the trigger, and a piston that pressurizes the inside of the cylinder as the trigger moves backward, supplying the liquid in the cylinder into the vertical supply tube. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-34982 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, electronic commerce (EC), where consumers order trigger-type liquid sprayers over the Internet, has been on the rise. In this case, the trigger-type liquid sprayers are wrapped in a warehouse or the like and shipped. To prevent damage to the product during transportation, the product is often wrapped in a horizontal position, for example, on a backing card. However, this wrapping method applies a load in the left-right direction to the trigger part of the product, which can cause the piston connected to the trigger part to become misaligned, breaking the seal between the piston and the cylinder and resulting in liquid leakage.

[0006] The present invention was made in consideration of the above circumstances, and its purpose is to provide a trigger-type liquid ejector that does not leak liquid even when a load is applied to the trigger portion in the left-right direction due to wrapping, etc. [Means for solving the problem]

[0007] (1) The trigger-type liquid ejector according to the present invention comprises an ejector body that is attached to a container body that contains liquid, and a nozzle member that is attached to the ejector body and has an ejection hole formed therein for ejecting the liquid. The ejector body comprises a vertical supply tube section that sucks up the liquid in the container body, an ejection tube section that extends forward from the vertical supply tube section, and a trigger mechanism that introduces the liquid from inside the vertical supply tube section into the ejection tube section and circulates the liquid from inside the ejection tube section towards the ejection hole side by moving the forward-biased trigger section rearward. The upper end of the trigger section is provided with a pair of support pieces that extend upward and are spaced apart in the left-right direction and are journaled on both the left and right sides of the ejection tube section. The lower side of the ejection tube section is provided with a deformation control section that is positioned between the pair of support pieces and abuts or comes close to the pair of support pieces in the left-right direction at least when the trigger section is in the forward-most position.

[0008] According to the trigger-type liquid ejector of the present invention, a deformation-restricting portion is provided below the injection tube portion to prevent left-right deformation of the trigger portion. A pair of support pieces extending upward and spaced apart in the left-right direction are provided at the upper end of the trigger portion and pivotally supported on both left and right sides of the injection tube portion, and the deformation-restricting portion is disposed between the pair of support pieces and supports the pair of support pieces from the inside. Therefore, even if a load is applied to the trigger portion in the left-right direction, the left-right deformation of the trigger portion can be restricted. Therefore, the piston connected to the trigger portion does not become misaligned, and liquid leakage from between the piston and the cylinder can be prevented.

[0009] (2) The deformation restricting portion may include a first rib extending in the front-rear direction, and a plurality of second ribs extending in the left-right direction from the first rib and abutting against or adjacent to the pair of support pieces.

[0010] In this case, the first rib extending vertically intersects with the multiple second ribs extending left and right, thereby increasing the strength of the deformation restriction section, thereby reliably restricting left and right deformation of the trigger section.

[0011] (3) The deformation restricting portion may further be in contact with or close to the pair of support pieces in the left-right direction when the trigger portion is located at the rearmost position.

[0012] In this case, even when the trigger is fully pulled, the deformation restricting portion abuts or comes close to the pair of support pieces, making it difficult for the trigger to deform left and right even during use. This also makes it possible to prevent the trigger from being pulled diagonally. [Effects of the Invention]

[0013] According to the trigger type liquid ejector of the present invention, it is possible to provide a trigger type liquid ejector that does not leak liquid even when a load is applied to the trigger part in the left-right direction due to wrapping or the like. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a vertical cross-sectional view of a trigger-type liquid ejector according to an embodiment of the present invention. [Figure 2] FIG. 2 is a side view of a relay board according to an embodiment of the present invention. [Figure 3] FIG. 4 is a rear view of the relay board according to the embodiment of the present invention. [Figure 4] FIG. 2 is an assembly diagram of a trigger portion and a relay member according to an embodiment of the present invention. [Figure 5] FIG. 5 is a cross-sectional view taken along the line V-V in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A trigger-type liquid ejector according to an embodiment of the present invention will be described below with reference to the drawings. 1, the trigger-type liquid ejector 1 according to this embodiment comprises an ejector body 2 that is attached to a container body A that contains liquid, and a nozzle member 3 that is attached to the ejector body 2 and has ejection holes 4 for ejecting the liquid. The ejector body 2 and a portion of the nozzle member 3 are covered by a cover member 5.

[0016] Examples of the liquid contained in the container body A include detergent for home use or dishwashing, deodorizers and air fresheners for use in the air or on clothes, disinfectant alcohol, and the like. Unless otherwise specified, each component part of the trigger-type liquid ejector 1 is a molded product made of synthetic resin such as olefin-based resin.

[0017] The ejector main body 2 mainly includes a vertical supply tube portion 10, a trigger mechanism 20, an injection tube portion 30, a switching valve 40, and a storage valve .

[0018] In the following description, the side of the container body A along the central axis O of the vertical supply tube portion 10 is referred to as the lower side, and the opposite side is referred to as the upper side, and the direction along the central axis O is referred to as the up-down direction. When viewed from the up-down direction, the direction intersecting the central axis O is referred to as the radial direction, and the direction circumferential around the central axis O is referred to as the circumferential direction. In the radial direction, the side where the nozzle member 3 is provided with respect to the ejector body 2 is referred to as the front side, and the opposite side is referred to as the rear side. In the radial direction, the direction perpendicular to the front-to-rear direction is referred to as the left-to-right direction.

[0019] The vertical supply tube 10 is formed in a topped cylindrical shape that extends vertically, and sucks up the liquid inside the container body A. The vertical supply tube 10 is provided with a flange 11 that is placed on the upper opening edge of the mouth of the container body A via a packing. The flange 11 is pressed down from above by a cap 12 that is attached (screwed) to the mouth of the container body A.

[0020] The upper part of a pipe 13 that extends vertically and sucks up liquid from inside the container body A is fitted inside the vertical supply tube part 10. A cylinder tube part 14 is provided on the front side of the vertical supply tube part 10. The cylinder tube part 14 protrudes forward from the vertical supply tube part 10 and is open forward.

[0021] The trigger mechanism 20 includes a trigger portion 21, a piston 22, a cylinder 23, and a biasing portion 24. The trigger mechanism 20 causes the liquid to flow from the vertical supply tube portion 10 through the injection tube portion 30 toward the ejection hole 4 side by moving the trigger portion 21 rearward.

[0022] The cylinder 23 is fitted and fixed in the cylinder tubular portion 14. The cylinder 23 is formed in a cylindrical shape with a bottom that is open at the front and closed at the rear. A horizontal communication passage 18 is formed in the rear wall of the cylinder 23, which communicates between the interior of the cylinder 23 and the interior of the upper end of the vertical supply tubular portion 10 in the front-rear direction.

[0023] The piston 22 is fitted into the cylinder 23 so as to be movable back and forth. The piston 22 moves back and forth in conjunction with the back and forth movement of the trigger portion 21. The interior of the cylinder 23 is pressurized and depressurized as the piston 22 moves back and forth. The piston 22 is formed in a topped cylindrical shape that is open at the rear and closed at the front. The front end of the piston 22 is connected to the rear of the trigger portion 21. As the trigger portion 21 moves backward, the piston 22 retreats and is pushed into the cylinder 23.

[0024] Piston 22 is urged forward together with trigger portion 21 by the elastic restoring force (urging force) of urging portion 24. When trigger portion 21 is at its forward-most position, piston 22 is located at the corresponding forward-most position. Urging portion 24 is an elastic plate disposed between injection tube portion 30 and trigger portion 21, and urges trigger portion 21 forward.

[0025] The switching valve 40 is provided inside the vertical supply tube portion 10. The switching valve 40 switches between communication between the inside of the vertical supply tube portion 10 and the inside of the cylinder 23 through the horizontal connecting passage 18 and the inside of the container body A and the inside of the cylinder 23, depending on the pressure increase or decrease inside the cylinder 23. The switching valve 40 is a ball valve.

[0026] The switching valve 40 is disposed on a valve seat 41 formed on the inner circumferential surface of the vertical supply tube section 10 so as to be movable upward. The valve seat 41 is formed in an annular shape and disposed coaxially with the central axis O. The valve seat 41 extends downward from the inner circumferential surface of the vertical supply tube section 10 toward the inside in the radial direction. The switching valve 40 and the valve seat 41 are located below the horizontal connecting passage 18.

[0027] The storage valve 42 is disposed within the vertical supply tube section 10, above the switching valve 40 and the horizontal connecting passage 18. The storage valve 42 is a check valve that allows the supply of liquid from the vertical supply tube section 10 to the injection tube section 30, and prevents the liquid from flowing back from the injection tube section 30 into the cylinder 23. As a result, the storage valve 42 prevents the liquid (and outside air) from entering the cylinder 23 from the injection tube section 30 side when the pressure inside the cylinder 23 is reduced.

[0028] The storage valve 42 is provided at the lower end of a spring portion that extends downward from a base portion attached to the underside of the top wall portion of the vertical supply tube portion 10. The storage valve 42 is movable in the vertical direction by the spring portion, and when it moves upward against the bias of the spring portion, it allows the supply of liquid from inside the vertical supply tube portion 10 to inside the injection tube portion 30. A protrusion that protrudes downward is provided on the underside of the storage valve 42, which limits the upward movement of the switching valve 40 to a certain range and prevents the switching valve 40 from blocking the horizontal connecting passage 18.

[0029] The injection tube portion 30 is disposed above the cylinder tube portion 14 and extends forward from the upper end of the vertical supply tube portion 10. The injection tube portion 30 is formed integrally with the top wall of the vertical supply tube portion 10. The injection tube portion 30 is provided with a relay member 31 to which the nozzle member 3 can be attached. The relay member 31 is attached to the front end of the injection tube portion 30.

[0030] The nozzle member 3 is formed in the shape of a closed cylinder with a top that is closed at the front. An ejection hole 4 that ejects liquid forward is formed at the front end of the nozzle member 3. The nozzle member 3 is rotatably attached to the relay member 31 in a state where it is prevented from slipping out in the forward direction.

[0031] The trigger portion 21 is disposed in front of the piston 22 so as to be movable back and forth. The trigger portion 21 comprises a trigger body 50 and a pair of support pieces 60. The trigger body 50 is the part that is gripped when performing the ejection operation, and is hooked from the front by, for example, an index finger. The trigger body 50 comprises a front plate portion that gradually extends downward as it extends forward, and a pair of side plate portions that extend rearward from the left and right side edges of the front plate portion and face each other in the left-right direction.

[0032] An opening 51 penetrating the front plate in the front-rear direction is provided at the upper end of the trigger body 50. A connecting shaft 52 to which the piston 22 is connected is provided behind the opening 51. The connecting shaft 52 protrudes inward in the left-right direction from each of a pair of side plates of the trigger body 50. Spring receiving portions (not shown) that abut against the biasing portion 24 from the front are formed on the surfaces facing outward on the left and right of the pair of side plates.

[0033] A pair of support pieces 60 protrude upward from the upper end of trigger body 50. The pair of support pieces 60 are spaced apart in the left-right direction and are pivotally supported on both left-right sides of relay member 31 of injection tube portion 30. Specifically, the pair of support pieces 60 are respectively combined with a pair of lever support walls (not shown) formed on relay member 31 so as to be rotatable about pivot shaft 61. This allows trigger portion 21 to be rotated about pivot shaft 61 with the pair of support pieces 60 as fulcrums.

[0034] The rear end edges of the pair of support pieces 60 are connected in the left-right direction by a reinforcing wall 62. The reinforcing wall 62 extends upward from the rear end edge of the top wall of the trigger body 50 and connects the pair of support pieces 60 in the left-right direction. The reinforcing wall 62 improves the strength of the pair of support pieces 60. In addition, a plurality of reinforcing walls that improve the strength of the trigger body 50 are also provided on the back side of the trigger body 50.

[0035] A deformation restricting portion 70 is provided on the lower side of injection tube portion 30. The deformation restricting portion 70 is disposed between the pair of support pieces 60 and comes into contact with or is close to the pair of support pieces 60 in the left-right direction at least when trigger portion 21 is located at the forward-most position. In other words, deformation restricting portion 70 comes into contact with the inner wall surfaces of the pair of support pieces 60 or is close to them with the minimum clearance required for insertion. Specifically, as shown in the side view of FIG. 2 and the rear view of FIG. 3, deformation restricting portion 70 is provided on relay member 31 and includes a first rib 71 extending in the front-rear direction and a plurality of second ribs 72 extending in the left-right direction from first rib 71.

[0036] The first rib 71 protrudes downward from the lower end of the tubular portion of the relay member 31 and extends in the front-to-rear direction. As shown in Fig. 2, the first rib 71 has a generally right-angled triangular shape in a side view. The first rib 71 has a first inclined portion that slopes upward toward the front, and a second inclined portion that slopes upward from the rear end of the first inclined portion toward the rear at a greater slope than the first inclined portion.

[0037] The second rib 72 extends in the left-right direction from the first rib 71. A plurality of second ribs 72 (three in this embodiment) are provided at equal intervals in the front-rear direction of the first rib 71. Of the plurality of second ribs 72, the rear second rib 72 extends further downward than the front second rib 72. As shown in FIG. 3, the second rib 72 is formed in a rectangular shape when viewed from behind, and the left and right side surfaces thereof are flat.

[0038] As shown in the assembly diagram of the trigger portion 21 and the relay member 31 in Fig. 4, the deformation restricting portion 70 of this embodiment abuts or is close to the pair of support pieces 60 in the left-right direction not only when the trigger portion 21 is located in the frontmost position (when in a state during transportation) but also when the trigger portion 21 is located in the rearmost position. As shown in Fig. 5, the surfaces of the pair of support pieces 60 facing inward in the left-right direction abut against the surfaces of the second ribs 72 facing outward in the left-right direction, so that the deformation restricting portion 70 supports the pair of support pieces 60 from the inside.

[0039] Next, a case where the trigger type liquid ejector 1 configured as described above is used will be described. It is assumed that each part of the trigger type liquid ejector 1 is filled with liquid.

[0040] 1 is pulled rearward, the piston 22 moves rearward, and pressure is applied to the inside of the cylinder 23. At this time, the liquid in the cylinder 23 flows into the upper end of the vertical supply tube portion 10 through the horizontal communicating passage 18, and the liquid presses the switching valve 40 against the valve seat 41, thereby blocking communication between the inside of the cylinder 23 and the inside of the container body A through the horizontal communicating passage 18.

[0041] As a result, the liquid that has flowed into the upper end of the vertical supply tube section 10 is pressurized, and when the internal pressure in this section rises and exceeds a predetermined value, the storage valve 42 is elastically displaced upward, allowing communication between the vertical supply tube section 10 and the injection tube section 30. Then, the liquid in the vertical supply tube section 10 is ejected to the outside from the ejection hole 4 through the injection tube section 30. When the liquid is ejected, the pressure inside the vertical supply tube section 10 is released, and the storage valve 42 closes.

[0042] Thereafter, when the trigger portion 21 is restored forward by the biasing portion 24, the piston 22 is restored forward within the cylinder 23 in conjunction with the trigger portion 21. At this time, the pressure within the cylinder 23 is reduced to a pressure lower than the pressure within the container body A, and the switching valve 40 moves upward away from the valve seat 41. As a result, the liquid within the container body A is supplied into the cylinder 23 through the vertical supply tube portion 10 and the horizontal connecting passage 18. Then, the reduced pressure within the cylinder 23 is released, and the switching valve 40 drops downward and seats on the valve seat 41. This makes it possible to prepare for the next ejection of liquid.

[0043] As described above, according to the trigger-type liquid ejector 1 of this embodiment, when the trigger portion 21 is operated and moves rearward, liquid is sucked up from inside the container body A and ejected to the outside from the ejection hole 4 of the nozzle member 3 through the vertical supply tube portion 10. Here, a deformation restriction portion 70 is provided below the ejection tube portion 30 to prevent deformation of the trigger portion 21 in the left-right direction.

[0044] A pair of support pieces 60 are provided at the upper end of trigger portion 21, extending upward and spaced apart in the left-right direction, and pivotally supported on both left and right sides of injection tube portion 30. Deformation restricting portion 70 is disposed between pair of support pieces 60 and supports pair of support pieces 60 from the inside. Therefore, even if a load is applied to trigger portion 21 in the left-right direction, deformation of trigger portion 21 in the left-right direction can be restricted. Therefore, piston 22 connected to trigger portion 21 will not become misaligned, and leakage of liquid from between piston 22 and cylinder 23 can be prevented.

[0045] As described above, the trigger-type liquid ejector 1 according to this embodiment comprises an ejector body 2 that is attached to a container body A containing a liquid, and a nozzle member that is attached to the ejector body 2 and has ejection holes 4 formed therein for ejecting the liquid. The ejector body 2 comprises a vertical supply tube portion 10 that sucks up the liquid in the container body A, an injection tube portion 30 that extends forward from the vertical supply tube portion 10, and a trigger portion 21 that is biased forward and moves rearward to introduce the liquid from the vertical supply tube portion 10 into the injection tube portion 30. and a trigger mechanism 20 that causes fluid to flow from inside the injection tube portion 30 toward the ejection hole 4, and a pair of support pieces 60 that extend upward and are spaced apart in the left-right direction and are pivotally supported on both left and right sides of the injection tube portion 30 are provided at the upper end of the trigger portion 21, and a deformation restricting portion 70 is provided below the injection tube portion 30, between the pair of support pieces 60, and that abuts or comes close to the pair of support pieces 60 in the left-right direction at least when the trigger portion 21 is located at the forward-most position. With this configuration, fluid leakage can be prevented even if a load in the left-right direction is applied to the trigger portion 21 by wrapping or the like.

[0046] Moreover, the deformation restricting portion 70 of this embodiment includes a first rib 71 extending in the front-rear direction, and a plurality of second ribs 72 extending in the left-right direction from the first rib 71 and abutting or adjacent to the pair of support pieces 60. With this configuration, the first rib 71 extending in the vertical direction intersects with the plurality of second ribs 72 extending in the left-right direction, thereby increasing the strength of the deformation restricting portion 70 and reliably restricting deformation of the trigger portion 21 in the left-right direction.

[0047] Furthermore, the deformation restricting portion 70 of this embodiment abuts or comes close to the pair of support pieces 60 in the left-right direction when the trigger portion 21 is located in the rearmost position. With this configuration, even when the trigger portion 21 is fully pulled, the deformation restricting portion 70 abuts or comes close to the pair of support pieces 60, making it difficult for the trigger portion 21 to deform in the left-right direction even during use. This also makes it possible to prevent the trigger portion 21 from being pulled obliquely.

[0048] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0049] In the above embodiment, the deformation restricting portion 70 is described as including the first rib 71 and the plurality of second ribs 72, but for example, the deformation restricting portion 70 may be formed in a block shape. Furthermore, for example, the configuration has been described in which the deformation control section 70 controls the left-right deformation of the trigger section 21 when the trigger section 21 is located in the rearmost position, but it is sufficient if the deformation of the trigger section 21 in the left-right direction can be controlled at least when the trigger section 21 is located in the frontmost position (when in the state during transportation).

[0050] In addition, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, without departing from the spirit of the present invention. [Explanation of symbols]

[0051] 1 trigger-type liquid jet 2 Squirt body 3 Nozzle member 4 Spout hole 5 Cover member 10 Vertical supply tube 11 flange 12 Caps 13 Pipe 14 Cylinder tube 18 Horizontal passageway 20 Trigger mechanism 21 Trigger section 22 Piston 23 cylinders 24 energizing section 30 Injection cylinder part 31 Relay member 40 Switching valve 41 Valve seat 42 Reservoir valve 43 Top Wall 44 Protrusion 50 Trigger body 51 Opening 52 Connecting shaft 60 Support piece 61 Rotating shaft 62 Reinforced Wall 70 Deformation control section 71 First Rib 72 Second Rib A Container body O center axis

Claims

1. an ejector body attached to a container containing a liquid; a nozzle member attached to the ejector body and having an ejection hole for ejecting the liquid; The ejector body includes: a vertical supply tube portion that sucks up the liquid in the container body; an injection tube portion extending forward from the vertical supply tube portion; a trigger mechanism that introduces the liquid from the vertical supply tube into the injection tube and causes the liquid to flow from the injection tube toward the nozzle hole by rearward movement of the forward-biased trigger part, a pair of support pieces extending upward and spaced apart in the left-right direction are provided at an upper end of the trigger portion and pivotally supported on both left-right sides of the injection tube portion; a deformation restricting portion is provided below the injection tube portion and is disposed between the pair of support pieces, and is in contact with or close to the pair of support pieces in the left-right direction at least when the trigger portion is located at the forward-most position; Trigger-type liquid squirt.

2. The deformation restricting portion is a first rib extending in the front-rear direction; a plurality of second ribs extending in the left-right direction from the first rib and abutting or adjacent to the pair of support pieces; The trigger-type liquid ejector according to claim 1 .

3. The deformation restricting portion further abuts or comes close to the pair of support pieces in the left-right direction when the trigger portion is located at the rearmost position.

3. The trigger-type liquid ejector according to claim 1 or 2.

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