Discharger

Abstract

To suppress settling of an elastic member.SOLUTION: An elastic member 17 includes: a fixed part 31 which is fixed on a discharger main body 13; an elastic deformation part 32 which extends to an intersection direction intersecting from the fixed part in an axial direction and separates from an operation member 16 in a direction by which a piston 12 is pressed in a cylinder 11 along the axial direction; and an extension part 33 which extends from the elastic deformation part to the operation member in the axial direction and of which a tip end part 33a is connected to the operation member. The elastic deformation part curves to form a protrusion toward an opposite side to the operation member when viewed from the axial direction and an orthogonal direction orthogonal to the intersection direction. The elastic deformation part and extension part are arranged on both sides interposing a center axis O1 of the cylinder in the orthogonal direction, and the elastic deformation part elastically deforms with shifting of the operation member, and a connection part between the elastic deformation part and extension part elastically displaces in the axial direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a dispenser. [Background technology]

[0002] Conventionally, as shown in, for example, Patent Documents 1 and 2 below, there has been known a dispenser in which, when an operating member is operated, an elastic member elastically deforms and a piston is pushed into a cylinder along the axial direction along the central axis of the cylinder, causing the liquid contents in the cylinder to be discharged from a discharge hole, and when, as a result of the restoration deformation of the elastic member, the piston moves back toward the outside of the cylinder along the axial direction together with the operating member, causing the liquid contents in the container body to be supplied into the cylinder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-064634 A [Patent Document 2] JP 2018-104055 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the elastic member is made of a synthetic resin material, there is a risk that the elastic member will easily become worn out.

[0005] The present invention provides a dispenser capable of suppressing the sagging of an elastic member. [Means for solving the problem]

[0006] A dispenser according to one aspect of the present invention comprises a cylinder to which the liquid content in a container body is supplied, and a dispenser body including a piston fitted into the cylinder so as to be movable along the central axis of the cylinder, a dispenser head having a discharge hole formed therein, an operating member connected to the piston, and an elastic member attached to the dispenser body, and when the piston is pushed into the cylinder along the axial direction along the central axis of the cylinder while the elastic member is elastically deformed in response to operation of the operating member, the liquid content in the cylinder is dispensed from the discharge hole, and when the piston moves back to the outside of the cylinder along the axial direction together with the operating member in response to the restoring deformation of the elastic member, the liquid content in the container body is discharged into the cylinder. The elastic member is provided with a fixed portion fixed to the dispenser body, an elastic deformation portion extending from the fixed portion in a direction intersecting the axial direction and away from the operating member in a direction in which the piston is pushed into the cylinder along the axial direction, and an extension portion extending from the elastic deformation portion in the axial direction toward the operating member and having a tip portion connected to the operating member, the elastic deformation portion being curved so as to protrude toward the opposite side of the operating member when viewed from a direction perpendicular to the axial direction and the intersecting direction, the elastic deformation portion and the extension portion being provided on both sides of the central axis in the perpendicular direction, and as the operating member moves, the elastic deformation portion elastically deforms, while the connection portion between the elastic deformation portion and the extension portion elastically displaces in the axial direction.

[0007] The elastic deformation portion is curved so as to protrude toward the opposite side of the operating member when viewed from the orthogonal direction, and as the operating member moves, the elastic deformation portion elastically deforms while the connecting portion between the elastic deformation portion and the extension portion elastically displaces in the axial direction, so that when the operating member is operated to push the piston into the cylinder, it is possible to make it difficult for the extension portion to bend and deform. This makes it difficult for a portion of the elastic member to be greatly deformed when the operating member is operated, and makes it possible to prevent the elastic member from becoming worn even if the elastic member is made of, for example, polypropylene (PP) or the like.

[0008] The elastic deformation portion may include a plurality of elastic pieces each extending in the intersecting direction from the fixed portion.

[0009] Since the elastic deformation portion has a plurality of elastic pieces each extending separately in the intersecting direction from the fixed portion, the elastic deformation portion is less likely to sag compared to when the elastic deformation portion is formed, for example, in the shape of a single rod or plate extending in the intersecting direction.

[0010] The tip ends of the extension portions provided on both sides of the central axis in the perpendicular direction may be connected to each other.

[0011] Since the tip ends of the extension parts provided on both sides of the central axis in the perpendicular direction are connected to each other, when the operating member is operated to push the piston into the cylinder, the deformation and displacement of the elastic deformation parts and extension parts provided on both sides of the central axis in the perpendicular direction can be made more uniform with less bias, and sagging of the elastic member can be reliably suppressed.

[0012] The dispenser body may include a vertical supply tube section that sucks up the liquid contents in the container body, the cylinder extending forward from the vertical supply tube section, the operating member arranged in front of the cylinder so as to be movable rearward, the elastic member urging the operating member that has moved rearward forward, the fixed portion being located above the central axis, the elastic deformation portion extending downward from the fixed portion, and the extension portion extending forward from a lower end of the elastic deformation portion.

[0013] The dispenser body has a vertical supply tube section that sucks up the liquid contents inside the container body, a cylinder extends forward from the vertical supply tube section, an operating member is arranged in front of the cylinder so as to be movable backward, and an elastic member urges the operating member that has moved backward forward, making the dispenser a so-called trigger-type liquid ejector. Since the fixed portion is located above the central axis, the elastic deformation portion extends downward from the fixed portion, and the extension portion extends forward from the lower end of the elastic deformation portion, the elastic member is less likely to protrude from the ejector body compared to, for example, a case in which the elastic deformation portion extends upward from the fixed portion, and deterioration of the appearance of the trigger-type liquid ejector can be prevented.

[0014] The dispenser body includes an injection tube section extending forward from a portion of the vertical supply tube section that is located above the cylinder, and a pressure accumulator member that is arranged within the injection tube section so as to be movable back and forth and that blocks communication between the interior of the vertical supply tube section and the discharge hole through the injection tube section, the pressure accumulator member moving rearward when pressure within the injection tube section rises, thereby connecting the interior of the vertical supply tube section and the discharge hole through the injection tube section, and a resin elastic body is provided that urges the pressure accumulator member that has moved rearward toward the front, and the elastic body and the elastic member may be formed integrally.

[0015] Since a pressure accumulating member and an elastic body are provided, when the pressure inside the injection tube portion reaches or exceeds a predetermined value, it becomes possible to connect the inside of the vertical supply tube portion to the discharge hole through the inside of the injection tube portion, and the content liquid can be stably ejected in the desired manner. Since the pressure accumulator member is provided inside the injection tube, the ejection head can be made smaller and the structure can be simplified, compared to a case in which the pressure accumulator member is provided inside the ejection head. Since the pressure accumulator is provided inside the injection tube, the internal volume of the injection tube can be reduced without increasing the number of parts. This allows the pressure inside the injection tube to be increased quickly when the operating member is operated, making it possible to reduce the number of times the operating member is operated (number of priming operations) required before ejection. Furthermore, by reducing the internal volume of the injection tube, air is less likely to remain inside the injection tube, making it possible to suppress variations in the ejection volume and dripping from the ejection hole caused by remaining air. Since the elastic body and the elastic member are integrally formed, an increase in the number of parts can be suppressed. Effect of the Invention

[0016] According to one aspect of the present invention, it is possible to suppress the settling of the elastic member. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a vertical cross-sectional view of a dispenser according to one embodiment. [Diagram 2] 2 is a perspective view of the dispenser shown in FIG. 1, as viewed obliquely from the front. [Diagram 3] 2 is a top view of the elastic member shown in FIG. 1. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A dispenser according to an embodiment of the present invention will now be described with reference to the drawings. As shown in FIG. 1, the dispenser 1 comprises a cylinder 11 to which the liquid content in the container body W is supplied, a dispenser body 13 having a piston 12 fitted into the cylinder 11 so as to be movable along the central axis O1 of the cylinder 11, a dispenser head 15 in which a dispenser hole 14 for the liquid content is formed, an operating member 16 connected to the piston 12, and an elastic member 17 attached to the dispenser body 13.

[0019] When the operating member 16 is operated, the elastic member 17 elastically deforms and the piston 12 is pushed into the cylinder 11 along the axial direction along the central axis O1 of the cylinder 11, causing the liquid contents in the cylinder 11 to be ejected from the discharge hole 14, and when the piston 12 moves back to its original position along the axial direction together with the operating member 16 toward the outside of the cylinder 11 in accordance with the restoration deformation of the elastic member 17, the liquid contents in the container body W is supplied into the cylinder 11.

[0020] The liquid contents contained within the container body W include, for example, detergent for home use or dishwashing, deodorizers and fragrances for use in the air or on clothing, disinfectant alcohol, and the like. Unless otherwise specified, each component part of the dispenser 1 is a molded product made of a synthetic resin such as an olefin resin such as polypropylene (PP) or polyethylene (PE), polyacetal (POM), or polyketone (POK).

[0021] In this embodiment, the ejector body 13 mainly comprises a cylinder 11, a piston 12, a vertical supply tube portion 18, an injection tube portion 19, a switching valve 21, and a pressure accumulating member 22, and is attached to a container body W that contains the liquid content.

[0022] In the following description, the side of the container body W along the central axis O2 of the vertical supply tube portion 18 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 O2 is referred to as the up-down direction (intersecting direction). The direction intersecting the central axis O2 when viewed from the up-down direction is referred to as the radial direction, and the direction going around the central axis O2 when viewed from the up-down direction is referred to as the circumferential direction. In the radial direction, the side where the ejection head 15 is provided with respect to the ejector body 13 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-rear direction (axial direction) is referred to as the left-right direction (intersecting direction).

[0023] The vertical supply tube portion 18 is formed in a topped tube shape extending in the vertical direction, and sucks up the liquid contents inside the container body W. The vertical supply tube portion 18 is equipped with a flange 18b that is disposed on the upper opening edge of the mouth of the container body W via a packing. The flange 18b is pressed down from above by a cap 23 that is attached (screwed) to the mouth of the container body W. The upper portion of a pipe 24 that extends in the vertical direction and sucks up the liquid contents from inside the container body W is fitted into the vertical supply tube portion 18. A cylinder tube portion 25 is provided on the front side of the vertical supply tube portion 18. The cylinder tube portion 25 protrudes forward from the vertical supply tube portion 18 and opens forward.

[0024] The cylinder 11 is fitted and fixed in the cylinder tube portion 25. The cylinder 11 is formed in a bottomed tube shape that is open at the front and closed at the rear. A horizontal communication passage 26 is formed in the rear wall of the cylinder 11, which communicates between the inside of the cylinder 11 and the inside of the upper end portion of the vertical supply tube portion 18 in the front-rear direction. The injection tube portion 19 extends forward from a portion of the vertical supply tube portion 18 that is located above the cylinder 11. The injection tube portion 19 is disposed above the cylinder tube portion 25, and extends forward from the upper end portion of the vertical supply tube portion 18. The injection tube portion 19 is formed integrally with the top wall 18a of the vertical supply tube portion 18. A vertical communication passage 27 that vertically communicates between the inside of the injection tube portion 19 and the inside of the upper end portion of the vertical supply tube portion 18 is formed at the connection portion between the injection tube portion 19 and the top wall 18a of the vertical supply tube portion 18.

[0025] Here, the operating member 16 is disposed in front of the cylinder 11 so as to be movable rearward. The operating member 16 extends downward from both sides that sandwich in the left-right direction the connecting portion between the injection tube portion 19 and the ejection head 15, and vertically straddles the front sides of the piston 12 and the cylinder 11. The upper end of the operating member 16 is supported so as to be rotatable about an axis that extends in the left-right direction.

[0026] The piston 12 is fitted in the cylinder 11 so as to be movable back and forth. The piston 12 moves in the front-back direction in conjunction with the front-back movement of the operating member 16. The inside of the cylinder 11 is pressurized and depressurized in accordance with the front-back movement of the piston 12. The piston 12 is formed in a topped cylindrical shape that is open at the rear and closed at the front. The front end of the piston 12 is connected to the rear part of the operating member 16. The piston 12 moves backward and is pushed into the cylinder 11 as the operating member 16 moves backward.

[0027] The pressure accumulating member 22 is disposed within the injection tube portion 19 so as to be movable back and forth, and blocks communication between the interior of the vertical supply tube portion 18 and the discharge hole 14 through the interior of the injection tube portion 19. The pressure accumulating member 22 is formed in a rod shape extending in the front-rear direction, and blocks communication between the interior of the vertical supply tube portion 18 and the discharge hole 14 through the interior of the injection tube portion 19 by abutting against the inner circumferential surface of the injection tube portion 19 in the front-rear direction. The pressure accumulating member 22 moves rearward when the pressure within the injection tube portion 19 rises, thereby connecting the interior of the vertical supply tube portion 18 and the discharge hole 14 through the interior of the injection tube portion 19.

[0028] The switching valve 21 is provided inside the vertical supply tube portion 18. The switching valve 21 switches between communication between the inside of the container body W and the inside of the cylinder 11 through the vertical supply tube portion 18 and the horizontal communication passage 26 and between the communication and the cutoff in response to the pressurization and depressurization in the cylinder 11. The switching valve 21 is a ball valve, and is formed, for example, of a material having a higher specific gravity than the content liquid in the container body W. The switching valve 21 is disposed on a valve seat 18c formed on the inner peripheral surface of the vertical supply tube portion 18 so as to be able to move upward. The valve seat 18c is formed in an annular shape and is disposed coaxially with the central axis O2. The valve seat 18c extends downward from the inner peripheral surface of the vertical supply tube portion 18 toward the inside in the radial direction. The switching valve 21 and the valve seat 18c are located below the horizontal communication passage 26.

[0029] In the illustrated example, a plurality of elastic protrusions 28 protruding downward are formed on the lower surface of the top wall 18a of the vertical supply tube portion 18. The elastic protrusions 28 are provided at intervals in the circumferential direction. When the switching valve 21 moves upward away from the valve seat 18c, the elastic protrusions 28 are elastically deformed radially outward, thereby expanding the space surrounded by the elastic protrusions 28.

[0030] The ejection head 15 includes a relay member 29 attached to the front end of the ejection tube portion 19, and a nozzle body 30 rotatably attached to the relay member 29 while being prevented from slipping out in the forward direction. Relay member 29 is formed in a cylindrical shape extending in the front-rear direction. The front portion of injection tube portion 19 is fitted into the rear portion of relay member 29. The front portion of relay member 29 protrudes forward from injection tube portion 19. The nozzle body 30 is formed in a cylindrical shape with a top that is closed at the front end. A discharge hole 14 is formed at the front end of the nozzle body 30 to spray the content liquid forward.

[0031] The elastic member 17 biases the operating member 16, which has moved rearward, forward. The elastic member 17 includes a fixed portion 31, an elastic deformation portion 32, and an extending portion 33. As shown in Fig. 3, two of each of the fixed portion 31, the elastic deformation portion 32, and the extending portion 33 are provided, one on each side of the central axis O1 of the cylinder 11 in the left-right direction. The fixed portion 31, the elastic deformation portion 32, and the extending portion 33 are formed of, for example, ultra-high molecular weight polyethylene (manufactured by Mitsui Chemicals, Inc., product name LUBMER).

[0032] At least the elastic deformation portion 32 of the elastic member 17 elastically deforms when the operating member 16 moves rearward. The elastic member 17 biases the operating member 16 forward before the operating member 16 moves rearward. Note that the elastic member 17 may only elastically deform and bias the operating member 16 forward when the operating member 16 moves rearward.

[0033] 1 and 2, the fixed portion 31 is located above the central axis O1 of the cylinder 11 and is fixed to the dispenser main body 13. The fixed portion 31 is formed in a plate shape with the front and back surfaces facing the left and right direction, and has a rectangular shape that is long in the front-rear direction when viewed from the left and right direction. The two fixed portions 31 sandwich the rear portion of the injection tube portion 19 in the left-right direction. A claw portion 36 that protrudes downward is formed at the front end of the fixed portion 31. Of the claw portion 36, the rear end edge facing rearward extends straight in the up-down direction, and the front end edge 36b facing forward extends rearward as it heads downward.

[0034] The fixed portion 31 is engaged with a locking groove 13a provided on the outer surface of the dispenser body 13. The locking groove 13a is open upward and in the front-rear direction. The front part of the bottom surface of the locking groove 13a extends straight in the front-rear direction, and the rear part extends downward toward the rear. The claw portion 36 can ride over the locking groove 13a forward by sliding the front end edge 36b of the claw portion 36 against the bottom surface of the locking groove 13a.

[0035] The elastic deformation portion 32 extends downward from the fixed portion 31 and passes below the central axis O1 of the cylinder 11. The elastic deformation portion 32 is located rearward of the operating member 16 and faces the operating member 16 in the front-rear direction. The elastic deformation portion 32 is located rearward of the cylinder 11. The lower end of the elastic deformation portion 32 may be located at the same vertical position or above the central axis O1 of the cylinder 11. The elastic deformation portion 32 may be located at the same front-rear position with respect to the cylinder 11.

[0036] The elastic deformation portion 32 is curved so as to protrude backward when viewed from the left-right direction. The elastic deformation portion 32 has a plurality of elastic pieces 32a (two in the illustrated example) each extending in the up-down direction from the fixed portion 31. The elastic deformation portion 32 is formed by the two elastic pieces 32a into an open ring shape in the left-right direction and elongated in the up-down direction. As shown in FIG. 3, the two elastic deformation portions 32 extend outward in the left-right direction, moving away from each other in the left-right direction from top to bottom. The left-right positions of the elastic deformation portions 32 may be the same over the entire length in the up-down direction.

[0037] The upper end of the elastic deformation portion 32 is formed into a curved shape that protrudes diagonally upward toward the front. The upper end of the elastic deformation portion 32 is connected to the fixed portion 31 via a connecting piece 37 that extends in the front-rear direction. The connecting piece 37 extends forward from the upper end of the elastic deformation portion 32. The elastic deformation portion 32 is not in contact with the fixed portion 31 and the outer surface of the dispenser body 13. The lower end of the elastic deformation portion 32 is formed into a curved surface that protrudes diagonally downward and faces forward. The lower end of the elastic deformation portion 32 is located rearward of the upper end of the elastic deformation portion 32.

[0038] The extension portion 33 extends forward from the elastic deformation portion 32, and a front end portion (tip portion) 33a is connected to the operating member 16. The extension portion 33 extends forward from the lower end portion of the elastic deformation portion 32. The extension portion 33 is located below the central axis O1 of the cylinder 11. The extension portion 33 may be indirectly connected to the operating member 16 via, for example, the piston 12. The extension portion 33 may extend forward from a vertical middle portion of the elastic deformation portion 32. The extension portion 33 may be located at the same vertical position as the central axis O1 of the cylinder 11, or may be located above it.

[0039] The extension 33 is formed in a plate shape with the front and back surfaces facing the up-down direction. The front part of the extension 33 located forward of the cylinder 11 extends inward in the left-right direction as it moves forward, and also extends downward as it moves forward. The part of the extension 33 located rearward of the front part is located above the lower end of the cylinder 11 and extends straight in the front-rear direction.

[0040] The front ends 33a of the extension parts 33 provided on both sides of the central axis O1 of the cylinder 11 in the left-right direction are connected to each other. The front ends 33a of the extension parts 33 are located directly below the central axis O1 of the cylinder 11. Note that the front ends 33a of these extension parts 33 do not have to be connected to each other.

[0041] A groove that penetrates in the vertical direction and opens forward is formed in the front end 33a of the extension 33. The bottom surface of this groove faces downward and diagonally forward in a vertical cross section and has a curved shape that protrudes forward. The bottom surface of this groove abuts against a wall 16b (see FIG. 4) that divides two adjacent recesses 16a in the horizontal direction, which are formed on the rear surface of the operating member 16, in the horizontal direction.

[0042] Of the front end portion 33a of the extension portion 33, two protruding portions 33b located on both sides of the groove portion in the left-right direction are inserted into two recessed portions 16a formed on the rear surface of the operating member 16. When the operating member 16 moves rearward, the two protruding portions 33b of the extension portion 33 are engaged with a lower end surface located at the lower end of the inner surface of the recessed portion 16a and facing upward. As a result, deformation of the extension portion 33 is suppressed as the operating member 16 moves rearward, and while the elastic deformation portion 32 elastically deforms, the connecting portion between the elastic deformation portion 32 and the extension portion 33 elastically displaces rearward.

[0043] As shown in FIG. 3, the rear ends of the two fixing parts 31 are connected to each other in the left-right direction by the blocking part 35. The blocking part 35 is formed in a bottomed tubular shape that opens forward and is closed at the rear. The vertical center parts of the blocking part 35 and the fixing part 31 are aligned with each other. The blocking part 35 is fitted into the rear end part of the injection tube part 19 and blocks the rear end opening of the injection tube part 19. The rear end part of the blocking part 35 is provided with a resin elastic body 38 that protrudes forward and biases the pressure accumulating member 22 that has moved rearward toward the front. The elastic body 38, the blocking part 35, and the elastic member 17 are integrally formed of the same material. It should be noted that only one fixing portion 31 may be provided, and for example, the blocking portion 35 may also function as the fixing portion 31.

[0044] The front end of the elastic body 38 abuts against the rear end of the pressure accumulating member 22. When the pressure in the rear end of the injection tube portion 19, where the vertical communicating passage 27 opens, exceeds a predetermined value, the pressure accumulating member 22 moves rearward while elastically deforming the elastic body 38, whereby the inside of the vertical supply tube portion 18 and the discharge hole 14 communicate with each other through the injection tube portion 19.

[0045] Next, a case where the dispenser 1 configured as described above is used will be described. Note that it is assumed that each part of the dispenser 1 is filled with the content liquid.

[0046] When the operating member 16 is pulled backward, the piston 12 moves backward, and the inside of the cylinder 11 is pressurized. At this time, the liquid content in the cylinder 11 flows into the upper end of the vertical supply tube portion 18 through the horizontal communication passage 26, and the switching valve 21 is pressed against the valve seat 18c by the liquid content, thereby blocking communication between the inside of the cylinder 11 and the inside of the container body W through the horizontal communication passage 26. As a result, the liquid content that has flowed into the upper end of the vertical supply tube portion 18 is supplied into the rear end of the injection tube portion 19 through the vertical communication passage 27, and when the internal pressure of this portion rises and exceeds a predetermined value, the pressure accumulating member 22 moves backward while elastically deforming the elastic body 38, so that the inside of the vertical supply tube portion 18 communicates with the discharge hole 14 through the injection tube portion 19, and the liquid content is sprayed from the discharge hole 14.

[0047] When the operating member 16 is pulled rearward, the bottom surface of the groove formed in the front end 33a of the extending portion 33 comes into contact with the aforementioned wall portion 16b formed on the rear surface of the operating member 16, and the two protruding portions 33b formed in the front end 33a of the extending portion 33 are engaged with the lower end surface located at the lower end of the inner surface of the recess 16a and facing upward. As a result, as the operating member 16 moves rearward, deformation of the extending portion 33 is suppressed, and while the elastically deforming portion 32 elastically deforms, the connecting portion between the elastically deforming portion 32 and the extending portion 33 elastically displaces rearward.

[0048] Thereafter, as the elastic deformation portion 32 undergoes restoring deformation, the connecting portion between the elastic deformation portion 32 and the extension portion 33 undergoes restoring displacement forward, and the operating member 16 moves forward in its restoration, and the piston 12 moves forward in its restoration in conjunction with the operating member 16 within the cylinder 11. At this time, the pressure within the cylinder 11 is reduced, becoming lower than the pressure within the container body W, and the switching valve 21 moves upward away from the valve seat 18c. As a result, the content liquid within the container body W is supplied into the cylinder 11 through the vertical supply tube portion 18 and the horizontal connecting passage 26. Here, the switching valve 21, which has moved upward away from the valve seat 18c, expands the space surrounded by the multiple elastic protrusions 28 while elastically deforming the multiple elastic protrusions 28 radially outward. When the reduced pressure in the cylinder 11 is released, the elastic protrusions 28, which have been elastically deformed by contact with the switching valve 21, are restored to their original shape, and the switching valve 21 is pushed back downward. As a result, the switching valve 21 is biased downward and seats on the valve seat 18c without sticking to the inner surface of the vertical supply tube portion 18.

[0049] As described above, according to the dispenser 1 of this embodiment, the elastic deformation portion 32 is curved so as to protrude backward when viewed from the left-right direction, and as the operating member 16 moves, the elastic deformation portion 32 elastically deforms while the connecting portion between the elastic deformation portion 32 and the extending portion 33 elastically displaces in the front-rear direction, so that when the operating member 16 is operated to push the piston 12 into the cylinder 11, it is possible to make it difficult for the extending portion 33 to bend and deform. As a result, when the operating member 16 is operated, it is difficult for a portion of the elastic member 17 to be greatly deformed, and even if the elastic member 17 is made of, for example, polypropylene (PP), it is possible to prevent the elastic member 17 from becoming worn.

[0050] Since the elastic deformation portion 32 has a plurality of elastic pieces 32a each extending in the vertical direction from the fixed portion 31, the elastic deformation portion 32 is less likely to sag compared to when the elastic deformation portion 32 is formed, for example, in the shape of a single rod or plate extending in the vertical direction.

[0051] Since the front end portions 33a of the extension portions 33 provided on both sides of the central axis O1 of the cylinder 11 in the left-right direction are connected to each other, when the operating member 16 is operated to push the piston 12 into the cylinder 11, the deformation and displacement of the elastic deformation portions 32 and the extension portions 33 provided on both sides of the central axis O1 of the cylinder 11 in the left-right direction can be made more uniform with less bias, and sagging of the elastic member 17 can be reliably suppressed.

[0052] The dispenser body 13 is equipped with a vertical supply tube section 18 that sucks up the liquid contents in the container body W, the cylinder 11 extends forward from the vertical supply tube section 18, the operating member 16 is arranged in front of the cylinder 11 so as to be movable backward, and the elastic member 17 urges the operating member 16 forward when it moves backward, making the dispenser 1 a so-called trigger-type liquid ejector. Since the fixed portion 31 is positioned above the central axis O1 of the cylinder 11, the elastic deformation portion 32 extends downward from the fixed portion 31, and the extension portion 33 extends forward from the lower end of the elastic deformation portion 32, the elastic member 17 is less likely to protrude from the ejector body 13 compared to, for example, a case in which the elastic deformation portion extends upward from the fixed portion 31, and deterioration of the appearance of the trigger-type liquid ejector can be prevented.

[0053] Since the pressure accumulating member 22 and the elastic body 38 are provided, when the pressure inside the injection tube portion 19 reaches or exceeds a predetermined value, it becomes possible to connect the inside of the vertical supply tube portion 18 to the discharge hole 14 through the inside of the injection tube portion 19, and the content liquid can be stably ejected in the desired manner. Since the pressure accumulating member 22 is provided inside the injection tube portion 19, the ejection head 15 can be made smaller and the structure can be simplified, compared to when the pressure accumulating member 22 is provided inside the ejection head 15. Since the pressure accumulator member 22 is provided inside the injection tube portion 19, the internal volume of the injection tube portion 19 can be reduced without increasing the number of parts. This allows the pressure inside the injection tube portion 19 to be increased quickly when the operating member 16 is operated, making it possible to reduce the number of operations of the operating member 16 required before ejection (number of priming operations). Furthermore, by reducing the internal volume of the injection tube portion 19, air is less likely to remain inside the injection tube portion 19, making it possible to suppress variations in the ejection amount and dripping from the ejection hole 14 caused by remaining air. Since the elastic body 38 and the elastic member 17 are integrally formed, an increase in the number of parts can be suppressed.

[0054] 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.

[0055] For example, as shown in Patent Document 2, a configuration may be adopted in which a cylinder extends in the vertical direction, a piston is fitted in the cylinder so as to be movable up and down, and an operating member is indirectly connected to the piston via a stem. In this case, the extension portion 33 of the elastic member 17 extends in the vertical direction and is connected to the operating member in the vertical direction, and as the operating member is operated, the elastic deformation portion 32 elastically deforms and the connecting portion between the elastic deformation portion 32 and the extension portion 33 elastically displaces downward. Note that the extension portion 33 may be indirectly connected to the operating member via, for example, a stem or a discharge head. The pressure accumulator 22, the elastic body 38, and the elastic protrusion 28 may not be provided. The elastic deformation portion 32 may include one elastic piece 32a, or three or more elastic pieces 32a.

[0056] In addition, within the scope of the invention, the components in the above-described embodiments may be replaced with well-known components, and the above-described embodiments and the above-described variations may be combined as appropriate.

[0057] For example, aspects of the present invention are as follows. <1> a dispenser body including a cylinder to which the liquid content in the container body is supplied, and a piston fitted in the cylinder so as to be movable along a central axis of the cylinder; A discharge head having discharge holes formed therein; an operating member connected to the piston; an elastic member attached to the dispenser body; When the piston is pushed into the cylinder along the axial direction along the central axis of the cylinder while the elastic member is elastically deformed in response to operation of the operating member, the liquid content in the cylinder is discharged from the discharge hole, and when the piston moves back to its original state along the axial direction together with the operating member in response to the restoration deformation of the elastic member, the liquid content in the container body is supplied into the cylinder, The elastic member is A fixing part fixed to the ejection device main body; an elastically deformable portion extending from the fixed portion in a direction intersecting the axial direction and separated from the operating member in a direction in which the piston is pushed into the cylinder along the axial direction; an extension portion extending from the elastic deformation portion toward the operating member in the axial direction and having a tip portion connected to the operating member, the elastic deformation portion is curved so as to protrude toward an opposite side to the operation member when viewed from an orthogonal direction that is orthogonal to the axial direction and the intersecting direction, The elastic deformation portion and the extension portion are provided on both sides of the central axis in the perpendicular direction, In the discharger, when the operating member moves, the elastic deformation portion elastically deforms, and a connecting portion between the elastic deformation portion and the extension portion elastically displaces in the axial direction. <2> The elastic deformation portion includes a plurality of elastic pieces each extending in the intersecting direction from the fixed portion. <1> The dispenser according to claim 1. <3> The tip ends of the extension parts provided on both sides of the central axis in the perpendicular direction are connected to each other. <1> or <2> The dispenser according to claim 1. <4> The dispenser body includes a vertical supply tube portion that sucks up the liquid content in the container body, The cylinder extends forward from the vertical supply tube portion, The operating member is disposed in front of the cylinder so as to be movable rearward, The elastic member biases the operating member, which has moved rearward, forward, The fixing portion is located above the central axis, The elastic deformation portion extends downward from the fixed portion, The extension portion extends forward from a lower end of the elastic deformation portion. <1> from <3> 13. The dispenser according to claim 12, <5> The ejector body includes: an injection tube portion extending forward from a portion of the vertical supply tube portion located above the cylinder; a pressure accumulating member that is disposed in the injection tube portion so as to be movable forward and backward and that blocks communication between the vertical supply tube portion and the discharge hole through the injection tube portion, the pressure accumulating member moves rearward when pressure in the injection tube portion increases, thereby communicating the vertical supply tube portion with the discharge hole through the injection tube portion; a resin elastic body is provided to bias the pressure accumulating member, which has moved rearward, forward; The elastic body and the elastic member are integrally formed. <4> The dispenser according to claim 1. [Explanation of symbols]

[0058] 1 Dispenser 11 Cylinders 12 Piston 13 Dispenser body 14 Discharge hole 15 Discharge head 16 Operating member 17 Elastic member 18 Vertical supply tube 19 Injection cylinder part 22 Pressure storage member 31 Fixed part 32 Elastic deformation part 32a Elastic piece 33 Extension part 33a Front end (tip) 38 Elastic Body O1 center axis W Container Body

Claims

1. a dispenser body including a cylinder to which the liquid content in the container body is supplied, and a piston fitted in the cylinder so as to be movable along a central axis of the cylinder; A discharge head having discharge holes formed therein; an operating member connected to the piston; an elastic member attached to the dispenser body; When the piston is pushed into the cylinder along the axial direction along the central axis of the cylinder while the elastic member is elastically deformed in response to operation of the operating member, the liquid content in the cylinder is discharged from the discharge hole, and when the piston moves back to its original state along the axial direction together with the operating member in response to the restoration deformation of the elastic member, the liquid content in the container body is supplied into the cylinder, The elastic member is A fixing part fixed to the ejection device main body; an elastically deformable portion extending from the fixed portion in a direction intersecting the axial direction and separated from the operating member in a direction in which the piston is pushed into the cylinder along the axial direction; an extension portion extending from the elastic deformation portion toward the operating member in the axial direction and having a tip portion connected to the operating member, the elastic deformation portion is curved so as to protrude toward an opposite side to the operation member when viewed from an orthogonal direction that is orthogonal to the axial direction and the intersecting direction, The elastic deformation portion and the extension portion are provided on both sides of the central axis in the perpendicular direction, In the discharger, when the operating member moves, the elastic deformation portion elastically deforms, and a connecting portion between the elastic deformation portion and the extension portion elastically displaces in the axial direction.

2. The dispenser according to claim 1 , wherein the elastically deformable portion includes a plurality of elastic pieces each extending in the intersecting direction from the fixed portion.

3. The dispenser according to claim 1 or 2, wherein tip ends of the extension portions provided on both sides of the central axis in the perpendicular direction are connected to each other.

4. The dispenser body includes a vertical supply tube portion that sucks up the liquid content in the container body, The cylinder extends forward from the vertical supply tube portion, The operating member is disposed in front of the cylinder so as to be movable rearward, The elastic member biases the operating member, which has moved rearward, forward, The fixing portion is located above the central axis, The elastic deformation portion extends downward from the fixed portion, The dispenser according to claim 1 or 2, wherein the extending portion extends forward from a lower end of the elastically deformable portion.

5. The ejector body includes: an injection tube portion extending forward from a portion of the vertical supply tube portion located above the cylinder; a pressure accumulating member that is disposed in the injection tube portion so as to be movable forward and backward and that blocks communication between the vertical supply tube portion and the discharge hole through the injection tube portion, the pressure accumulating member moves rearward when pressure in the injection tube portion increases, thereby communicating the vertical supply tube portion with the discharge hole through the injection tube portion; a resin elastic body is provided to bias the pressure accumulating member, which has moved rearward, forward; The dispenser of claim 4 , wherein the elastic body and the elastic member are integrally formed.

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