Trigger-type liquid dispenser

Abstract

To improve a front energization force imposed on a trigger part which is moved rearward and to maintain a magnitude of the front energization force for a long period of time.SOLUTION: An injector main body 2 comprises a vertical supply cylinder part 10 for sucking up liquid in a vessel body A, and a trigger mechanism 20 having a trigger part 21 which is movably arranged rearward and makes the liquid circulate toward an injection hole side from the inside of the vertical supply cylinder part with the movement of the trigger part to a rear side. An energization member 5 is provided for energizing the rearward-moved trigger part toward a front side. The energization member comprises a resin-made elastic arm part 15 arranged on both sides with the injector main body sandwiched therebetween in left and right directions, and a slide part 16 arranged at a front end part of the elastic arm part. The elastic arm part is curved so as to be protrusive upward, and the upper end part of the elastic arm part protrudes upward from the injector main body. The slide part is attached to the trigger part so as to be slidable in a vertical direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Conventionally, as disclosed, for example, in Patent Document 1 below, a trigger-type liquid ejector that sucks up liquid from inside a container by the forward and backward movement of a trigger portion and ejects the liquid through an ejection hole has been known. Generally, a trigger-type liquid ejector includes a resin biasing member that biases the backward-moved trigger portion forward. [Prior Art Literature] [Patent Literature]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2011-177630 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] However, in conventional trigger-type liquid ejectors, there remains room for improvement in increasing the forward biasing force applied to the backward-moved trigger portion and maintaining the magnitude of this forward biasing force over a long period of time.

[0005] The present invention provides a trigger-type liquid ejector capable of both increasing the forward biasing force applied to a backward-moved trigger portion and maintaining the magnitude of this forward biasing force over a long period of time. [Means for Solving the Problem]

[0006] A trigger-type liquid dispenser according to one aspect of the present invention comprises a dispenser body attached to a container body containing liquid, and a nozzle member attached to the dispenser body and having a discharge hole formed therein for discharging liquid, wherein the dispenser body has a vertical supply cylinder portion for drawing up the liquid from the container body and a trigger portion disposed to be movable to the rear, and a trigger mechanism that causes the liquid to flow from the vertical supply cylinder portion toward the discharge hole when the trigger portion moves toward the rear, and a biasing member is provided to bias the rearward-moved trigger portion toward the front, wherein the biasing member comprises resin elastic arm portions extending in the front-rear direction provided on both sides that sandwich the dispenser body in the left-right direction, and a sliding portion provided at the front end of the elastic arm portion, wherein the elastic arm portion is curved so as to protrude upward, the upper end of the elastic arm portion protrudes upward from the dispenser body, and the sliding portion is attached to the trigger portion so as to be slidable in the vertical direction. The ejector body comprises an injection cylinder portion extending forward from the vertical supply cylinder portion, and a pressure accumulator member disposed within the injection cylinder portion so as to be movable back and forth, and blocking communication between the vertical supply cylinder portion and the ejection hole through the injection cylinder portion. The pressure accumulator member is provided with a resin elastic body that moves backward when the pressure in the injection cylinder portion rises, thereby connecting the vertical supply cylinder portion and the ejection hole through the injection cylinder portion, and biasing the backward-moving pressure accumulator member forward. The elastic body and the elastic arm portion are integrally formed. .

[0007] Since the sliding part provided at the front end of the elastic arm is attached to the trigger so as to be slidable in the vertical direction, the sliding part slides vertically on the trigger as the trigger moves back and forth, which makes it possible to suppress the amount of deformation of the elastic arm and maintain the magnitude of the forward biasing force applied from the elastic arm to the rearward-moving trigger over a long period of time. Since the upper end of the elastic arm section, which extends in the front-to-back direction, protrudes upward from the main body of the ejector, it becomes possible to significantly extend the curved elastic arm section upward, thereby improving the forward biasing force applied from the elastic arm section to the trigger section that moves backward.

[0008] The downward-facing lower surface of the upper end of the elastic arm portion may be located above the main body of the sprayer.

[0009] Since the downward-facing lower surface of the upper end of the elastic arm is located above the dispenser body, the upper end of the elastic arm can protrude upward from the dispenser body without excessively increasing the width of the elastic arm extending in the front-to-back direction. This makes it possible to improve the forward biasing force applied from the elastic arm to the rearward-moving trigger without excessively increasing the traction force of the trigger required to eject the liquid inside the container from the nozzle.

[0010] The biasing member may be formed from an olefin resin.

[0011] Since the biasing member is made of olefin resin, formaldehyde can be eliminated, and it is also possible to easily form the entire trigger-type liquid dispenser from olefin resin, for example. Even if the elastic arm is made of olefin resin, the aforementioned configuration makes it possible to improve the forward biasing force applied to the rearward-moving trigger and to maintain the magnitude of this forward biasing force over a long period of time.

[0013] Since a pressure accumulator and an elastic body are provided, when the pressure inside the injection cylinder exceeds a predetermined value, it becomes possible to connect the inside of the vertical supply cylinder and the ejection hole through the injection cylinder, allowing the liquid to be ejected stably in the desired manner. Since the pressure accumulator is located inside the injection cylinder, the nozzle can be made smaller and the structure can be simplified compared to when the pressure accumulator is located inside the nozzle. Because the pressure accumulation member is located inside the injection cylinder, the internal volume of the injection cylinder can be reduced without increasing the number of parts. This allows the pressure inside the injection cylinder to increase quickly when the trigger is operated, thus reducing the number of priming cycles. Furthermore, because the internal volume of the injection cylinder is reduced, less air remains inside, which can suppress variations in the amount of liquid ejected and dripping from the nozzle caused by residual air. Since the elastic body and the elastic arm are formed as a single unit, the increase in the number of parts can be kept to a minimum. [Effects of the Invention]

[0014] According to one aspect of the present invention, it is possible to improve the forward biasing force applied to the trigger portion that has moved backward, and to maintain the magnitude of this forward biasing force over a long period of time. [Brief explanation of the drawing]

[0015] [Figure 1] This is a longitudinal cross-sectional view of a trigger-type liquid dispenser shown as one embodiment. [Figure 2] Figure 1 is a side view of the trigger-type liquid dispenser, seen from the left and right directions. [Figure 3] Figure 1 is a side view of the biasing member as seen from the left and right directions. [Figure 4] Figure 1 is a front view of the biasing member as seen from the front. [Modes for carrying out the invention]

[0016] A trigger-type liquid dispenser according to one embodiment of the present invention will be described below with reference to the drawings. As shown in Figure 1, the trigger-type liquid dispenser 1 according to this embodiment comprises a dispenser body 2 attached to a container A that contains liquid, a nozzle member 3 having a discharge hole 4 for discharging liquid and attached to the dispenser body 2, and a biasing member 5. Examples of liquids contained in the container A include household or dishwashing detergents, deodorizers and air fresheners used in spaces and on clothing, and disinfectant alcohol. Unless otherwise specified, each component of the trigger-type liquid dispenser 1 is a molded product made of synthetic resin, such as olefin resin.

[0017] The ejector body 2 mainly comprises a vertical supply cylinder section 10, a trigger mechanism 20, an injection cylinder section 30, a switching valve 40, and a pressure accumulation member 31.

[0018] In the following description, the side of the container body A along the central axis O of the vertical supply cylinder portion is referred to as the lower side, the opposite side is referred to as the upper side, and the direction along the central axis O is referred to as the vertical direction. When viewed from the vertical direction, the direction intersecting the central axis O is referred to as the radial direction, and the direction revolving 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 relative to the ejector main 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 orthogonal to the front-rear direction is referred to as the left-right direction.

[0019] The vertical supply cylinder portion 10 is formed into a capped cylinder shape extending in the vertical direction, and sucks up the liquid in the container body A. The vertical supply cylinder portion 10 is provided with a flange 11 disposed on the upper end opening edge of the mouth portion of the container body A via a packing. The flange 11 is pressed from above by a cap 12 attached (screwed) to the mouth portion of the container body A. Inside the vertical supply cylinder portion 10, the upper portion of a pipe 13 that extends in the vertical direction and sucks up liquid from the inside of the container body A is fitted. A cylinder cylinder portion 14 is provided on the front side of the vertical supply cylinder portion 10. The cylinder cylinder portion 14 protrudes forward from the vertical supply cylinder portion 10 and is open toward the front.

[0020] The trigger mechanism 20 includes a trigger portion 21, a piston 22, and a cylinder 23. The trigger mechanism 20 causes liquid to flow from the inside of the vertical supply cylinder portion 10 toward the ejection hole 4 side by the backward movement of the trigger portion 21.

[0021] The cylinder 23 is fitted into and fixed in the cylinder cylinder portion 14. The cylinder 23 is formed into a bottomed cylindrical shape that opens forward and is closed at the rear. A lateral communication passage 18 that communicates the inside of the cylinder 23 and the inside of the upper end portion of the vertical supply cylinder portion 10 in the front-rear direction is formed in the rear wall portion of the cylinder 23. The trigger section 21 is positioned in front of the vertical supply cylinder section 10 and is movable backward. The trigger section 21 extends downward from both sides that sandwich the connection between the injection cylinder section 30 and the nozzle member 3 in the left-right direction, and straddles the front of the piston 22 and cylinder 23 in the vertical direction. The upper end of the trigger section 21 is supported so as to be rotatable about an axis that extends in the left-right direction. The piston 22 is fitted into the cylinder 23 so as to be movable back and forth. The piston 22 moves in the back and forth direction in conjunction with the back and forth movement of the trigger portion 21. The inside of the cylinder 23 is pressurized and depressurized as the piston 22 moves back and forth. The piston 22 is formed in a top-closed 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 end of the trigger section 21. As the trigger section 21 moves backward, the piston 22 retracts and is pushed into the cylinder 23.

[0022] The injection cylinder section 30 is positioned above the cylinder section 14 and extends forward from the upper end of the vertical supply cylinder section 10. The injection cylinder section 30 is integrally formed with the top wall 43 of the vertical supply cylinder section 10. A vertical communication passage 19 is formed at the connection point between the injection cylinder section 30 and the top wall 43 of the vertical supply cylinder section 10, connecting the inside of the injection cylinder section 30 and the inside of the upper end of the vertical supply cylinder section 10 in the vertical direction.

[0023] The pressure accumulator 31 is disposed within the injection cylinder 30 so as to be movable back and forth, and blocks communication between the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30. The pressure accumulator 31 is formed in the shape of a rod extending in the front-rear direction and abuts against the inner circumferential surface of the injection cylinder 30 in the front-rear direction, thereby blocking communication between the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30. When the pressure inside the injection cylinder 30 rises, the pressure accumulator 31 moves backward, allowing communication between the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30.

[0024] The switching valve 40 is located inside the vertical supply cylinder 10. The switching valve 40 switches the communication between the inside of the vertical supply cylinder 10 and the inside of the container A via the horizontal communication passage 18 and the inside of the cylinder 23, and shuts it off, in response to the pressurization and depressurization inside the cylinder 23. The switching valve 40 is a ball valve and is made of a material that is heavier than the liquid inside the container A, for example. The switching valve 40 is positioned on a valve seat 41 formed on the inner circumferential surface of the vertical supply cylinder 10 so as to be able to move away from it upward. The valve seat 41 is formed in an annular shape and is arranged coaxially with the central axis O. The valve seat 41 extends downward from the inner circumferential surface of the vertical supply cylinder 10 radially inward. The switching valve 40 and the valve seat 41 are located below the horizontal communication passage 18.

[0025] In the illustrated example, multiple elastic protrusions 44 projecting downward are formed on the lower surface of the top wall 43 of the vertical supply cylinder portion 10. Multiple elastic protrusions 44 are provided spaced apart in the circumferential direction. When the switching valve 40 moves upward away from the valve seat 41, the multiple elastic protrusions 44 are elastically deformed radially outward, expanding the space surrounded by the multiple elastic protrusions 44.

[0026] The nozzle member 3 comprises a relay member 3a attached to the front end of the injection cylinder portion 30, and a nozzle body 3b that is rotatably mounted to the relay member 3a while being prevented from coming off forward. The intermediate member 3a is formed in a cylindrical shape that extends in the front-rear direction. The front part of the injection cylinder 30 is fitted inside the rear part of the intermediate member 3a. The front part of the intermediate member 3a protrudes forward from the injection cylinder 30. The nozzle body 3b is formed in a closed-end cylindrical shape. An ejection hole 4 is formed at the front end of the nozzle body 3b, which ejects liquid forward.

[0027] The biasing member 5 biases the trigger portion 21, which has moved backward, toward the forward direction. The elastic arm portion 15 biases the trigger portion 21 toward the forward direction even before the trigger portion 21 moves backward. As shown in Figures 2 to 4, the biasing member 5 comprises resin elastic arm portions 15 extending in the front-rear direction, provided on both sides that sandwich the ejector body 2 in the left-right direction, a sliding portion 16 provided at the front end of the elastic arm portion 15, and a connecting portion 32 that connects the rear ends of the pair of elastic arm portions 15 in the left-right direction.

[0028] The elastic arm portion 15 is curved so as to protrude upward, and the upper end (top) of the elastic arm portion 15 protrudes upward from the ejector body 2. The radius of curvature of the upper end of the elastic arm portion 15, as viewed from the left and right directions, is, for example, 15 mm or more. The cross-sectional area of ​​the elastic arm portion 15 is, for example, 30 mm². 2 The above describes the configuration. The lower surface of the upper end of the elastic arm portion 15, which faces downward, is also located above the ejector body 2. The elastic arm portion 15 may bias the trigger portion 21 forward only when the trigger portion 21 moves backward.

[0029] The sliding portion 16 is mounted on the trigger portion 21 so as to be slidable in the vertical direction. The sliding portion 16 is separated inward in the left-right direction from the front end of the elastic arm portion 15 (see Figure 4). The sliding portion 16 is formed in a plate shape with its front and back surfaces facing left-right. When viewed from the left-right direction, the sliding portion 16 protrudes forward and downward relative to the front end of the elastic arm portion 15 (see Figure 3). The rear ends of the front ends of the sliding portion 16 and the elastic arm portion 15 are connected in the left-right direction via a connecting piece 5b. A vertical groove 5a is defined between the sliding portion 16 and the elastic arm portion 15, opening in the forward and vertical directions. Here, engagement grooves 21a extending in the vertical direction are formed at both ends in the left-right direction on the rear surface of the trigger portion 21 (see Figure 2). The sliding portion 16 is fitted into the engagement grooves 21a so as to be able to slide up and down. On the rear surface of the trigger portion 21, the outer edge portion 21b, which is located outside the engagement grooves 21a in the left-right direction, is inserted into the vertical groove 5a of the biasing member 5.

[0030] The connecting portion 32 includes a closed portion 35 formed in the shape of a bottomed cylinder that opens forward and closes at the rear, and hook portions 34 that protrude forward from each connecting portion between the closed portion 35 and the rear ends of the pair of elastic arm portions 15. The vertical centers of the closed portion 35 and the rear ends of the elastic arm portions 15 coincide with each other.

[0031] As shown in Figure 1, the closing portion 35 is fitted into the rear end of the injection cylinder portion 30, closing the rear end opening of the injection cylinder portion 30. The rear end of the closing portion 35 is provided with a resin elastic body 33 that protrudes forward and biases the rearward-moving pressure accumulation member 31 forward. The elastic body 33 and the elastic arm portion 15 are integrally formed from the same material. In this embodiment, the entire biasing member 5 is integrally formed from the same material (for example, an olefin resin such as polypropylene (PP)). The front end of the elastic body 33 is in contact with the rear end of the pressure accumulator 31. When the pressure inside the rear end of the injection cylinder 30, where the vertical passage 19 opens, exceeds a predetermined value, the pressure accumulator 31 moves backward while elastically deforming the elastic body 33, thereby creating communication between the inside of the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30.

[0032] As shown in Figures 2 to 4, the hook portion 34 is formed in a plate shape with its front and back surfaces facing left and right. A claw portion 36 is formed at the front end of the hook portion 34, projecting downward. Of the claw portion 36, the rear edge 36a facing backward extends straight in the vertical direction, while the front edge 36b facing forward extends backward as it goes downward. The claw portion 36 is locked into a locking groove 2a provided on the outer surface of the ejector body 2. The locking groove 2a is open upward and in the front-rear direction. Of the groove bottom surface of the locking groove 2a, the front part extends straight in the front-rear direction, while the rear part extends downward as it goes backward. The claw portion 36 can move forward over the locking groove 2a by sliding the front edge 36b of the claw portion 36 against the groove bottom surface of the locking groove 2a.

[0033] Next, we will explain how to use the trigger-type liquid dispenser 1 configured as described above. It should be assumed that each part of the trigger-type liquid dispenser 1 is filled with liquid.

[0034] When the trigger section 21 is pulled backward, the piston 22 moves backward, and the inside of the cylinder 23 is pressurized. At this time, the liquid inside the cylinder 23 flows into the upper end of the vertical supply cylinder section 10 through the horizontal communication passage 18, and this 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 communication passage 18. As a result, the liquid that has flowed into the upper end of the vertical supply cylinder section 10 is supplied to the rear end of the injection cylinder section 30 through the vertical communication passage 19, and when the internal pressure in this section rises and exceeds a predetermined value, the pressure accumulator 31 moves backward while elastically deforming the elastic body 33, thereby creating communication between the inside of the vertical supply cylinder section 10 and the ejection hole 4 through the injection cylinder section 30, and the liquid is ejected from the ejection hole 4. When the trigger portion 21 is pulled backward, the elastic arm portion 15 undergoes elastic deformation, and the sliding portion 16 slides within the engagement groove 21a of the trigger portion 21, while elastically displacing backward together with the front end of the elastic arm portion 15.

[0035] Subsequently, when the trigger unit 21 is returned to its original position forward by the biasing member 5, the piston 22 moves forward within the cylinder 23 in conjunction with the trigger unit 21. At this time, the pressure inside the cylinder 23 is reduced to a level lower than the pressure inside container A, causing the switching valve 40 to move upward away from the valve seat 41. As a result, the liquid inside container A is supplied into the cylinder 23 through the vertical supply cylinder 10 and the horizontal communication passage 18. Here, the switching valve 40, which has moved upward away from the valve seat 41, expands the space surrounded by the multiple elastic protrusions 44 by elastically deforming the multiple elastic protrusions 44 radially outward. When the pressure inside the cylinder 23 is released, the elastic protrusions 44 that were elastically deformed by contact with the switching valve 40 return to their original shape, and the switching valve 40 is pushed back downward. As a result, the switching valve 40 is biased downward and seats on the valve seat 41 without sticking to the inner surface of the vertical supply cylinder 10.

[0036] As described above, in the trigger-type liquid dispenser 1 according to this embodiment, the upper end of the elastic arm portion 15 extending in the front-rear direction protrudes upward from the dispenser body 2, making it possible to extend the curved elastic arm portion 15 significantly upward, thereby improving the forward biasing force applied from the elastic arm portion 15 to the rearward-moving trigger portion 21. Since the sliding part 16 provided at the front end of the elastic arm part 15 is attached to the trigger part 21 so as to be slidable in the vertical direction, the sliding part 16 slides vertically on the trigger part 21 as the trigger part 21 moves back and forth, which makes it possible to suppress the amount of deformation of the elastic arm part 15 and maintain the magnitude of the forward biasing force applied from the elastic arm part 15 to the rearward-moving trigger part 21 over a long period of time.

[0037] Since the downward-facing lower surface of the upper end of the elastic arm portion 15 is located above the ejector body 2, the upper end of the elastic arm portion 15 can protrude upward from the ejector body 2 without excessively increasing the width of the elastic arm portion 15 extending in the front-rear direction. This makes it possible to improve the forward biasing force applied by the elastic arm portion 15 to the rearward-moving trigger portion 21 without excessively increasing the traction force of the trigger portion 21 required to eject the liquid in the container body A from the ejection hole 4.

[0038] Since the biasing member 5 is made of olefin resin, formaldehyde can be eliminated, and it is also possible to easily form the entire trigger-type liquid dispenser 1 from olefin resin, for example. Even if the elastic arm portion 15 is made of an olefin resin, the aforementioned configuration makes it possible to improve the forward biasing force applied to the rearward-moving trigger portion 21 and to maintain the magnitude of this forward biasing force over a long period of time.

[0039] Since the pressure accumulator 31 and elastic body 33 are provided, when the pressure inside the injection cylinder 30 exceeds a predetermined value, it becomes possible to connect the inside of the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30, allowing the liquid to be ejected stably in the desired manner. Since the pressure accumulator 31 is provided inside the injection cylinder 30, the nozzle member 3 can be made smaller and its structure can be simplified compared to the case where the pressure accumulator 31 is provided inside the nozzle member 3. Since the pressure accumulation member 31 is provided inside the injection cylinder 30, the internal volume of the injection cylinder 30 can be reduced without increasing the number of parts. As a result, when the trigger unit 21 is operated, the pressure inside the injection cylinder 30 can be increased quickly, and the number of priming cycles can be reduced. Furthermore, because the internal volume of the injection cylinder 30 is reduced, air is less likely to remain inside the injection cylinder 30, which can suppress variations in the amount of liquid ejected and dripping from the ejection hole 4 caused by residual air. Since the elastic body 33 and the elastic arm portion 15 are formed integrally, the increase in the number of parts can be suppressed.

[0040] Furthermore, the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0041] For example, the pressure accumulator 31, the elastic body 33, and the elastic projection 44 do not need to be provided. The downward-facing lower surface of the upper end of the elastic arm portion 15 may be positioned at the same vertical position relative to the upper end of the ejector body 2, or it may be positioned below it. The sliding portion 16 may be formed in a groove shape, and a projection may be formed on the trigger portion 21 that fits into the sliding portion 16 so as to be slidable vertically. Of the biasing member 5, only the elastic arm portion 15 may be formed from a resin material.

[0042] Furthermore, without departing from the spirit of the present invention, the components in the above embodiments may be replaced with well-known components as appropriate, and the above embodiments and modifications may be combined as appropriate.

[0043] Examples of the present invention are as follows: <1> A sprayer body that is attached to a container body containing liquid, The device comprises a nozzle member attached to the aforementioned ejector body, which has an ejection hole formed therein for ejecting liquid, The aforementioned ejector body is A vertical supply cylinder that draws up the liquid inside the container, It comprises a trigger mechanism having a trigger portion that is movable to the rear, and which causes liquid to flow from the vertical supply cylinder toward the ejection hole when the trigger portion moves to the rear, A biasing member is provided to bias the trigger portion, which has moved backward, toward forward. The biasing member is The ejector body is sandwiched from side to side by elastic resin arms extending in the front-to-back direction, The elastic arm portion comprises a sliding portion provided at the front end of the elastic arm portion, The elastic arm portion is curved so as to protrude upward, The upper end of the elastic arm portion protrudes upward from the ejector body, The sliding part is attached to the trigger part so as to be slidable in the vertical direction, and is a trigger-type liquid dispenser. <2> The downward-facing lower surface of the upper end of the elastic arm portion is located above the ejector body, <1> The trigger-type liquid dispenser described in [reference]. <3> The biasing member is made of an olefin resin, <1> or <2> The trigger-type liquid dispenser described in [reference]. <4> The aforementioned ejector body is An injection cylinder portion extending forward from the aforementioned vertical supply cylinder portion, The system includes a pressure accumulation member that is disposed within the injection cylinder portion so as to be movable back and forth, and which blocks communication between the vertical supply cylinder portion and the ejection hole through the injection cylinder portion, The pressure accumulating member moves backward when the pressure in the injection cylinder rises, thereby connecting the vertical supply cylinder and the ejection hole through the injection cylinder. A resin elastic body is provided to bias the rearward-moved pressure accumulator forward. The elastic body and the elastic arm portion are formed integrally, <1> from <3> A trigger-type liquid dispenser as described in one of the following. [Explanation of Symbols]

[0044] 1. Trigger-type liquid dispenser 2 Squirt body 3 Nozzle component 4 Spout hole 5. Biasing member 10 Vertical supply cylinder section 15 Elastic arm section 16 Sliding part 20 Trigger Mechanism 21 Trigger section 30 Injection cylinder part 31 Pressure Accumulator 33 Elastic body A container

Claims

1. A sprayer body that is attached to a container body containing liquid, The device comprises a nozzle member attached to the aforementioned ejector body, which has an ejection hole formed therein for ejecting liquid, The aforementioned ejector body is A vertical supply cylinder that draws up the liquid inside the container, It comprises a trigger mechanism having a trigger portion that is movable to the rear, and which causes liquid to flow from the vertical supply cylinder toward the ejection hole when the trigger portion moves to the rear, A biasing member is provided to bias the trigger portion, which has moved backward, toward forward. The biasing member is The ejector body is sandwiched from side to side by elastic resin arms extending in the front-to-back direction, The elastic arm portion comprises a sliding portion provided at the front end of the elastic arm portion, The elastic arm portion is curved so as to protrude upward, The upper end of the elastic arm portion protrudes upward from the ejector body, The sliding part is attached to the trigger part so as to be slidable in the vertical direction. The aforementioned ejector body is An injection cylinder portion extending forward from the aforementioned vertical supply cylinder portion, The system includes a pressure accumulation member that is disposed within the injection cylinder portion so as to be movable back and forth, and which blocks communication between the vertical supply cylinder portion and the ejection hole through the injection cylinder portion, The pressure accumulating member moves backward when the pressure in the injection cylinder rises, thereby connecting the vertical supply cylinder and the ejection hole through the injection cylinder. A resin elastic body is provided to bias the rearward-moved pressure accumulator forward. The elastic body and the elastic arm portion are integrally formed in a trigger-type liquid dispenser.

2. The trigger-type liquid dispenser according to claim 1, wherein the downward-facing lower surface of the upper end of the elastic arm portion is located above the dispenser body.

3. The trigger-type liquid dispenser according to claim 1 or 2, wherein the biasing member is made of an olefin resin.

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