WO2024005177A1

WO2024005177A1 - Stopper for dispenser

Info

Publication number: WO2024005177A1
Application number: PCT/JP2023/024328
Authority: WO
Inventors: 宏太郎藤原
Original assignee: 株式会社吉野工業所
Priority date: 2022-06-30
Filing date: 2023-06-30
Publication date: 2024-01-04

Abstract

The present invention is a stopper for a dispenser (1) to be used installed on a dispenser (50) comprising a dispenser body (51) that comprises a piston (61) and a cylinder (62), a nozzle member (52), and an operating member (53), wherein the stopper for a dispenser (1) has a C shape and comprises an inner peripheral wall (12), an outer peripheral wall (13), and a pair of connecting walls (14) and is equipped with a dividing portion (11) that restricts movement of the operating member (53) toward the cylinder (62) and divides the extension of the cylinder circumferential direction when viewed from the cylinder axis (O2) direction.

Description

Stopper for dispenser

The present invention relates to a stopper for a dispensing device. This application claims priority based on Japanese Patent Application No. 2022-106208 filed in Japan on June 30, 2022 and Japanese Patent Application No. 2023-007367 filed in Japan on January 20, 2023. Its contents are incorporated here.

In general, a dispenser includes a dispenser body that includes a piston and a cylinder into which the piston is fitted and whose interior is pressurized and depressurized as the piston moves along the cylinder axis, and a dispenser body that is attached to the dispenser body. and a nozzle member formed with a discharge hole through which the liquid content from inside the cylinder is discharged, and an operation member connected to the piston and provided so as to be movable forward and backward with respect to the cylinder, the operation member being When moving toward the cylinder side, the inside of the cylinder is pressurized and the liquid content is discharged from the discharge hole. As a dispensing device stopper that is attached to such a dispensing device and used to restrict unexpected movement of an operating member toward the cylinder side, a configuration as shown in, for example, Patent Document 1 below is known. In this configuration, when viewed from the cylinder axis direction, a dividing portion that divides the circumferential extension of the cylinder is formed in a part of the circumferential direction of the cylinder that revolves around the cylinder axis, so that the cylinder has a C-shape. This dispensing device stopper is located on the operating member side of the dispensing device body along the cylinder axial direction from the cylinder, and is removably fitted onto a connecting portion extending in the cylinder axial direction. By abutting in this direction, movement of the operating member toward the cylinder side is restricted.

Japanese Patent Application Publication No. 2015-085289

In order to prevent the dispensing device stopper from being deformed by unexpected external force and coming off from the dispensing device, it is conceivable to increase the thickness of the dispensing device stopper to increase its rigidity. However, in this case, it becomes difficult to attach and detach the dispensing device stopper from the dispensing device, and the dispensing device stopper becomes kinky in a short period of time after the start of use, and the divided portion is kept expanded in the circumferential direction. etc. are possible.

An object of the present invention is to provide a stopper for a dispensing device that can prevent the stopper from coming off the dispensing device and shortening its life when an unexpected external force is applied while ensuring operability.

A first aspect of the present invention provides a dispensing device body including a piston and a cylinder into which the piston is fitted and whose interior is pressurized and depressurized as the piston moves in the axial direction of the cylinder; a nozzle member that is attached to the discharger body and has a discharge hole through which the liquid content from the cylinder is discharged; and an operation member that is connected to the piston and is movable toward and from the cylinder. and a stopper for a discharge device, which is used by being attached to a discharge device, which pressurizes the inside of the cylinder and discharges the liquid content from the discharge hole when the operating member moves toward the cylinder side. The operation member is located on the side of the operation member along the cylinder axis direction from the cylinder in the discharge device main body, and is removably fitted onto a connecting portion that extends in the cylinder axis direction. The actuating member restricts movement of the operating member toward the cylinder by coming into contact with the member in the cylinder axial direction, and is formed in a part of the cylinder circumferential direction that revolves around the cylinder axis when viewed from the cylinder axial direction. an inner circumferential wall that surrounds an outer circumferential surface of the connecting portion; an outer circumferential wall that surrounds an outer circumferential surface of the inner circumferential wall; This is a stopper for a discharger, comprising a pair of connecting walls that separately connect end portions of the outer circumferential walls in the cylinder circumferential direction to each other.

In this case, the ejector stopper includes an inner circumferential wall, an outer circumferential wall, and a pair of connecting walls. This makes it possible to expand and contract the divided portion in the circumferential direction of the cylinder while elastically deforming both the inner and outer walls when attaching and detaching the dispenser stopper to the dispenser, making the dispenser stopper flexible. It is possible to increase the fitting force of the dispensing device stopper to the connecting portion while ensuring the properties. This can prevent the ejector stopper from deforming and coming off from the ejector due to unexpected external force. In addition, compared to a configuration in which the wall thickness of the dispenser stopper is simply thickened, it becomes difficult to attach and detach the dispenser stopper from the dispenser, and the dispenser stopper becomes kinky in a short period of time after use, resulting in the separation part. It is possible to prevent the cylinder from remaining expanded in the circumferential direction. Therefore, while ensuring operability of the stopper for the ejector, it is possible to prevent it from coming off the ejector when an unexpected external force is applied, and to prevent it from shortening its lifespan.

In a second aspect of the present invention, the cylinder shaft extends in the front-rear direction, the operating member extends in the up-down direction, and is provided to be swingable in the back-and-forth direction around an upper end, and the connecting portion is configured to The operating member includes a front wall whose front and back surfaces face in the front-rear direction, and a front wall which projects rearward from the front wall and whose front and back faces face in the front-rear and up-down directions. A pair of left and right side walls facing perpendicular left and right directions, the dividing portion is provided at the upper end of the stopper for the dispenser, and the stopper for the war story dispenser includes the operating member. The dispensing device stopper according to the first aspect is provided with a first regulated portion that is inserted into the inside of the dispensing device and is in contact with or close to the inner surfaces of the pair of left and right side walls.

In this case, the cylinder shaft extends in the front-rear direction, and the operating member extends in the up-down direction and is provided so as to be swingable in the front-rear direction around the upper end. As a result, even if the ejector stopper is attached to a trigger-type liquid ejector, the ejector stopper 1 can be operated easily, but it can be prevented from coming off from the ejector when an unexpected external force is applied, and it can be short-lived. It is possible to suppress the The ejector stopper is inserted into the inside of the operating member and includes a first regulated portion that abuts or is close to the inner surfaces of the pair of left and right side walls. As a result, when an external force is applied to the dispensing device stopper in the left-right direction, the first regulated portion hits the inner surface of the side wall of the operating member, and the dispensing device stopper is displaced in the left-right direction with respect to the dispensing device. This can prevent it from coming off. As a result, even if, for example, a large number of assemblies in which the dispensing device stopper is attached to the dispensing device are randomly housed and transported, the dispensing device stopper will not easily come off from the dispensing device, so the connecting portion There is no need to excessively increase the fitting force of the stopper for the ejector.

A third aspect of the present invention is that the second regulated portion is inserted into the inner side of the cylinder from the front of the cylinder and is provided with a second regulated portion that is in contact with or close to a lower end portion on the inner circumferential surface of the cylinder. This is a stopper for a dispensing device in two modes.

In this case, the second restricted part is inserted into the inside of the cylinder from the front of the cylinder and is in contact with or close to the lower end of the inner peripheral surface of the cylinder. As a result, when an unexpected downward external force is applied to the dispensing device stopper, the second regulated portion hits the lower end of the inner peripheral surface of the cylinder, and the dispensing device stopper moves against the dispensing device. It is possible to prevent it from being displaced downward and coming off.

A fourth aspect of the present invention is that the front and back surfaces of the connecting wall are arranged in one direction in the cylinder radial direction intersecting the cylinder axis, when viewed from the cylinder axis direction, in which the dividing portion penetrates the discharger stopper. The connecting wall connects the ends of the inner circumferential wall and the outer circumferential wall in the cylinder circumferential direction to each other in the other direction perpendicular to the one direction when viewed from the cylinder axis direction, and , the inner end portion on the dividing portion side along the other direction bulges toward the dividing portion and is formed thicker than other portions, any one of the first to third aspects. This is a stopper for one dispenser.

In this case, the inner end portion of the connecting wall on the dividing portion side along the other direction bulges toward the dividing portion and is formed thicker than the other portions. As a result, the inner end of the connecting wall is hooked on the outer peripheral surface of the connecting part, and the fitting force of the dispensing device stopper to the connecting part is reliably secured, and an unexpected external force causes the dispensing device stopper to discharge. It is possible to reliably prevent it from falling out of the container.

A fifth aspect of the present invention is that on the outer peripheral surface of the outer peripheral wall, when viewed from the cylinder axis direction, a portion located on the opposite side of the dividing portion across the cylinder axis in the cylinder radial direction intersecting the cylinder axis, In the dispenser stopper of the first aspect, at least two knob protrusions protruding outward in the cylinder radial direction are formed at intervals in the cylinder circumferential direction.

In this case, at least two knob protrusions are formed on the outer peripheral surface of the outer peripheral wall. Accordingly, when the two knob protrusions are pinched toward each other in the cylinder circumferential direction, the dividing portion is expanded in the cylinder circumferential direction, and the discharger stopper can be easily attached to and detached from the connecting portion.

In a sixth aspect of the present invention, the at least two knob protrusions are two knob protrusions, and the two knob protrusions are mutually arranged in the circumferential direction of the cylinder as they move outward in the radial direction of the cylinder. The stopper for the ejector according to the fifth aspect extends in a direction away from the ejector.

In this case, the two knob protrusions extend away from each other in the circumferential direction of the cylinder as they go outward in the radial direction of the cylinder. Thereby, when the two knob protrusions are pinched toward each other in the cylinder circumferential direction, the dividing portion can be reliably expanded in the cylinder circumferential direction.

A seventh aspect of the present invention is that a restriction portion that contacts the operating member in the cylinder axial direction is provided in a space surrounded by the outer peripheral surface of the inner peripheral wall and the inner peripheral surface of the outer peripheral wall. This is the stopper for an ejector according to the fifth aspect or the sixth aspect.

In this case, a restriction portion that abuts the operating member in the cylinder axial direction is provided in a space surrounded by the outer peripheral surface of the inner peripheral wall and the inner peripheral surface of the outer peripheral wall. Thereby, it becomes possible to bring the discharge device stopper into contact with the operating member over a wide range in the cylinder axial direction, and it is possible to reliably restrict movement of the operating member toward the cylinder side.

According to this invention, while ensuring operability, it is possible to prevent the ejector from coming off from the ejector when an unexpected external force is applied, and to prevent the ejector from shortening its life.

It is a longitudinal cross-sectional view of the stopper for dischargers shown as a 1st embodiment. FIG. 2 is a view of the ejector stopper seen from the front in FIG. 1 . FIG. 2 is a view of the ejector stopper seen from above in FIG. 1 . 2 is a sectional view taken along the line IV-IV in FIG. 1. FIG. It is a longitudinal cross-sectional view of the stopper for dischargers shown as 2nd Embodiment. FIG. 6 is a view of the ejector stopper seen from the front in FIG. 5 .

(First embodiment)
EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of the stopper for dischargers based on this invention is described with reference to drawings. First, the ejector to which the ejector stopper 1 is mounted will be described. The ejector 50 includes a ejector main body 51, a nozzle member 52, and an operating member 53, and is attached to a container body A containing a liquid content. Unless otherwise specified, each component of the discharge device 50 is a molded product made of synthetic resin.

The ejector main body 51 includes a vertical supply cylinder part 54, a connection cylinder part 55, a mounting cap 56, a storage cylinder 57, a storage plunger 58, a biasing member 59, an injection cylinder part 60, a piston 61, It mainly includes a cylinder 62, a ball valve 63, and a storage valve 64.

The bottom side of the container body A along the central axis O1 of the vertical supply cylinder 54 is referred to as the lower side, the opposite side is referred to as the upper side, and the direction along the central axis O1 is referred to as the up-down direction. When viewed from the vertical direction, one of the directions intersecting the central axis O1 is referred to as the front-back direction, and the direction orthogonal to both the vertical direction and the front-back direction is referred to as the left-right direction.

The mounting cap 56 is mounted on the mouth of the container body A. The mounting cap 56 fixes the vertical supply cylinder portion 54 to the mouth of the container body A. The vertical supply cylinder portion 54 passes through the mounting cap 56 in the vertical direction. The upper part of a suction pipe 54a whose lower end opens into the bottom of the container body A is fitted into the lower part of the vertical supply cylinder part 54. The connecting tube portion 55 extends forward from the upper end of the vertical supply tube portion 54 . A rear end portion of the connecting cylinder portion 55 opens into the vertical supply cylinder portion 54 . The front end of the connecting tube 55 opens to the outside of the ejector main body 51, and a plug 51b is fitted into this opening to close (seal) the opening at the front end of the connecting tube 55. The connecting cylinder portion 55 is upwardly separated from the mounting cap 56.

The cylinder 62 is provided between the connecting cylinder portion 55 and the mounting cap 56. A central axis of the cylinder 62 (hereinafter referred to as cylinder axis O2) extends in the front-rear direction. The cylinder 62 projects forward from the vertical supply cylinder part 54 and is fitted into the cylinder cylinder part 51a that is open toward the front. The cylinder 62 is formed into a horizontal cylindrical shape with an open front end and a closed rear end. The inside of the cylinder 62 communicates with the inside of the vertical supply cylinder portion 54 through a communication passage 51c extending in the front-rear direction.

The piston 61 is fitted inside the cylinder 62 so as to be movable in the front-back direction. As the piston 61 moves back and forth, the inside of the cylinder 62 is pressurized and depressurized. The piston 61 is formed into a horizontal cylindrical shape with an open rear end and a closed front end. The piston 61 is urged forward by a coil spring 51d. The coil spring 51d is inserted into the piston 61 and arranged coaxially with the cylinder axis O2. The coil spring 51d is sandwiched between the top wall of the piston 61 and the bottom wall of the cylinder 62 in the front-rear direction. The coil spring 51d is made of, for example, a metal material or a resin material.

The central axis O3 of the storage cylinder 57 is located above the vertical supply cylinder part 54 and the connection cylinder part 55. A lower end portion of the storage cylinder 57 is formed integrally with upper end portions of the vertical supply cylinder portion 54 and the connection cylinder portion 55, respectively. A central axis O3 of the storage cylinder 57 extends in the front-rear direction. A lower portion of the front end of the storage cylinder 57 communicates between a storage space 57a defined between the storage cylinder 57 and the front end of the storage plunger 58, and the inside of the connecting cylinder portion 55. A supply hole 57b is formed. The supply hole 57b extends in the vertical direction and is located rearward of the plug 51b.

The storage plunger 58 blocks communication between the inside of the vertical supply cylinder part 54 and the discharge hole 52a of the nozzle member 52 through the supply hole 57b and the inside of the connection cylinder part 55. The storage plunger 58 is fitted into the storage cylinder 57 so as to be movable in the front-rear direction. The storage plunger 58 moves rearward when the internal pressure of the storage space 57a exceeds a predetermined value as the content liquid is supplied to the storage space 57a through the supply hole 57b. At this time, the storage space 57a expands, the content liquid is stored in the storage space 57a, and communication between the inside of the vertical supply cylinder part 54 and the discharge hole 52a through the supply hole 57b and the inside of the connection cylinder part 55 is allowed.

The biasing member 59 is provided within the storage cylinder 57 and urges the storage plunger 58 forward. The biasing member 59 is a coil spring made of metal or resin. The biasing member 59 is arranged coaxially with the central axis O3. The injection cylinder portion 60 extends forward from the storage cylinder 57. The injection cylinder part 60 communicates with the inside of the vertical supply cylinder part 54 through the storage space 57a, the supply hole 57b, and the inside of the connection cylinder part 55.

The ball valve 63 and the storage valve 64 are provided within the vertical supply cylinder section 54. The ball valve 63 is provided below the communication path 51c. The ball valve 63 blocks communication between the inside of the container body A and the inside of the cylinder 62 through the inside of the vertical supply cylinder 54 when the inside of the cylinder 62 is pressurized, and is also displaced upward when the inside of the cylinder 62 is depressurized. This is a check valve that allows communication between the inside of the container body A and the inside of the cylinder 62 through the inside of the vertical supply cylinder part 54. The storage valve 64 is provided above the ball valve 63 and the communication path 51c. The storage valve 64 allows the supply of the content liquid from the inside of the vertical supply cylinder part 54 through the inside of the connection cylinder part 55 to the storage space 57a, and also allows the supply of the content liquid from the storage space 57a to the inside of the vertical supply cylinder part 54 through the inside of the connection cylinder part 55. It is said to be a check valve that restricts the outflow of the contents.

The nozzle member 52 has a discharge hole 52a through which the liquid inside the cylinder 62 is discharged, and is attached to the front end of the discharge device body 51. The nozzle member 52 includes a mounting cylinder part 52b externally fitted onto the injection cylinder part 60 from the front, a nozzle shaft part 52c provided in the front end of the mounting cylinder part 52b, and a nozzle cap 52d mounted on the nozzle shaft part 52c. It is equipped with. The front end portion of the mounting cylinder portion 52b is located forward of the injection cylinder portion 60. A discharge hole 52a is formed in the nozzle cap 52d. The discharge hole 52a opens toward the front and discharges the content liquid toward the front.

The operating member 53 is linked to the piston 61 and is provided so as to be movable forward and backward relative to the cylinder 62. The operating member 53 is formed with a protrusion 53a that protrudes rearward and abuts the front surface of the top wall of the piston 61. The operating member 53 extends in the vertical direction and is provided so as to be swingable in the front and rear directions around the upper end. The upper end of the operating member 53 is connected to the nozzle member 52. The upper end portion of the operating member 53 is located directly below the injection cylinder portion 60. The operating member 53 is provided in front of the piston 61 and the cylinder 62, and straddles the piston 61 and the cylinder 62 in the vertical direction.

The operating member 53 includes a front wall 53b whose front and back surfaces face in the front-back direction, and a pair of left and right side walls 53c whose front and back faces face in the left-right direction. The front wall 53b is located forward of the piston 61 and cylinder 62. A projection 53a projects rearward from the front wall 53b. The side wall 53c projects rearward from the front wall 53b. The top wall of the piston 61 is inserted between the pair of left and right side walls 53c. The rear end edge of the side wall 53c is formed in a curved shape that extends downward and forward, and is convex toward the rear.

Next, the function of the ejector 50 will be explained. It is assumed that each part of the ejector 50 is filled with the liquid by operating the operating member 53 multiple times.

When the operating member 53 is moved backward together with the piston 61 against the forward biasing force of the coil spring 51d, the inside of the cylinder 62 is pressurized, and the liquid inside the cylinder 62 flows through the communication path 51c to the vertical supply cylinder section 54. supplied within. At this time, the ball valve 63 is pressed downward and the storage valve 64 is pushed up, so that the liquid inside the vertical supply cylinder 54 flows through the connection cylinder 55 and the supply hole 57b into the storage space 57a of the storage cylinder 57. The storage space 57a is pressurized.

As a result, the storage plunger 58 moves rearward against the forward biasing force of the biasing member 59, and the liquid content is stored in the expanded storage space 57a, and the liquid inside the connecting cylinder 55 and the supply hole 57b are , and communication between the inside of the vertical supply cylinder part 54 and the discharge hole 52a through the inside of the injection cylinder part 60 is allowed, and the content liquid in the storage space 57a with increased pressure is supplied to the discharge hole 52a through the inside of the injection cylinder part 60. , is discharged forward from the discharge hole 52a.

As described above, each time the operation member 53 is pulled backward, the storage plunger 58 is moved backward, and the liquid content is discharged from the discharge hole 52a while the liquid content is stored in the expanded storage space 57a. Ru.

Thereafter, when the operating member 53 is released, the piston 61 is restored forward in the cylinder 62 due to the elastic restoring force (biasing force) of the coil spring 51d, so the operating member 53 is also restored forward. Therefore, the pressure inside the cylinder 62 is reduced and the pressure becomes lower than the internal pressure of the container body A, so the ball valve 63 rises while the storage valve 64 remains closed, and the liquid in the container body A is vertically It rises within the supply cylinder section 54 and is supplied into the cylinder 62 through the communication path 51c.

When the rearward operation of the operating member 53 is stopped, the supply of the liquid inside the vertical supply cylinder 54, the connection cylinder 55, and the storage space 57a through the supply hole 57b is stopped, but the urging member 59 The storage plunger 58 begins to move forward due to the urging force. At this time, the outflow of the liquid from the storage space 57a into the vertical supply cylinder section 54 is regulated by the storage valve 64. Thereby, the content liquid accumulated in the storage space 57a can be supplied to the discharge hole 52a through the injection cylinder part 60, and can be continuously discharged forward through the discharge hole 52a. That is, the content liquid is ejected not only when the operation member 53 is pulled backward, but also when the operation member 53 is not operated, so that the content liquid can be continuously ejected.

Next, the dispensing device stopper 1 will be explained.

The dispenser stopper 1 is located in the front of the dispenser main body 51 on the operating member 53 side than the cylinder 62, and is removably fitted onto a connecting portion extending in the front-rear direction. By abutting in this direction, movement of the operating member 53 toward the rear, which is the cylinder 62 side, is restricted. In this embodiment, the connecting portion of the ejector main body 51 is a portion of the piston 61 that protrudes forward from the cylinder 62 and is located rearward from the operating member 53.

As shown in FIGS. 2 and 3, the discharger stopper 1 has a dividing portion 11 that divides the circumferential extension of the cylinder in a part of the circumferential direction of the cylinder that revolves around the cylinder axis O2 when viewed from the front and rear directions. It is formed and has a C-shape. The dividing portion 11 is provided at the upper end of the stopper 1 for a discharger. The dividing portion 11 penetrates the upper end portion of the dispensing device stopper 1 in the vertical direction (one direction). In addition, the dividing part 11 may be provided, for example at the end part of the left-right direction of the stopper 1 for dischargers, etc. The discharge device stopper 1 extends over an angular range of more than 180° around the cylinder axis O2 when viewed from the front and back direction.

The dispenser stopper 1 includes an inner circumferential wall 12, an outer circumferential wall 13, and a connecting wall 14.

The inner peripheral wall 12 surrounds the outer peripheral surface of the connecting portion and is formed to be elastically deformable. The inner peripheral wall 12 is formed in an arc shape and is disposed coaxially with the cylinder axis O2. The connecting portion is removably fitted into the inner circumferential wall 12 . The outer peripheral wall 13 surrounds the outer peripheral surface of the inner peripheral wall 12 and is formed to be elastically deformable. The outer peripheral wall 13 is formed in an arc shape and is disposed coaxially with the cylinder axis O2. The outer circumferential wall 13 is separated from the outer circumferential surface of the inner circumferential wall 12 in the cylinder radial direction intersecting the cylinder axis O2 when viewed from the front and rear directions.

The lower ends of the outer circumferential surface of the inner circumferential wall 12 and the inner circumferential surface of the outer circumferential wall 13 are connected to each other by a connecting portion 15. The connecting portion 15 is formed into a plate shape with front and back surfaces facing in the left-right direction. The connecting portion 15 connects the lower ends of the inner circumferential wall 12 and the outer circumferential wall 13 to each other over the entire length in the front-rear direction. The connecting portion 15 deforms the inner circumferential wall 12 and the outer circumferential wall 13 so as to follow the deformation of the other. This prevents only one of the inner circumferential wall 12 and the outer circumferential wall 13 from deforming while the other becomes difficult to deform, when the dispensing device stopper 1 is attached to and detached from, for example, the connecting portion of the dispensing device main body 51. I can do things, etc.

As shown in FIG. 1, the rear end edges of the inner circumferential wall 12, the outer circumferential wall 13, and the connecting portion 15 extend straight in the vertical direction. The front end edges of the inner circumferential wall 12, the outer circumferential wall 13, and the connecting portion 15 extend forward as they go downward. The front edge of each of the inner circumferential wall 12, the outer circumferential wall 13, and the connecting portion 15 coincides with the rear edge of the side wall 53c of the operating member 53 in a cross-sectional view along the up-down direction. The front edge of each of the inner circumferential wall 12 and the outer circumferential wall 13 is in contact with the rear edge of the side wall 53c of the operating member 53.

As shown in FIGS. 2 and 3, two connecting walls 14 are provided at intervals in the left-right direction, and connect the ends of each of the inner circumferential wall 12 and the outer circumferential wall 13 in the cylinder circumferential direction to each other. There is. The front and back surfaces of the connecting wall 14 face in the vertical direction in which the dividing portion 11 penetrates the discharge device stopper 1 in the cylinder radial direction. The connecting wall 14 connects the ends of the inner circumferential wall 12 and the outer circumferential wall 13 in the cylinder circumferential direction to each other in the left-right direction (the other direction) orthogonal to the up-down direction when viewed from the front-rear direction. An inner end portion 14a of the connecting wall 14 on the dividing portion 11 side along the left-right direction bulges toward the dividing portion 11 and is formed thicker than other portions. The inner end portion 14a of the connecting wall 14 is formed into a curved surface that protrudes toward the dividing portion 11 side along the left-right direction.

A pedestal portion 13a that protrudes downward is formed on the outer peripheral surface of the outer peripheral wall 13. The pedestal portion 13a is formed into a plate shape with front and back surfaces facing in the vertical direction. The pedestal portion 13a is provided over the entire length in the front-rear direction at the lower end of the outer peripheral surface of the outer peripheral wall 13. Both end portions of the pedestal portion 13a in the left-right direction are located outside the connecting portion 15 in the left-right direction. A pair of left and right knob pieces 13b protruding outward in the left-right direction are formed on the base portion 13a. The knob piece 13b is formed into a plate shape with front and back surfaces facing in the vertical direction. The knob piece 13b is provided over the entire length of the base portion 13a in the front-rear direction. Note that the pedestal portion 13a and the knob piece 13b may not be provided. The configuration of the knob 13b may be changed as appropriate.

The discharger stopper 1 is provided with a first regulated portion 16 that is inserted into the inside of the operating member 53 and comes into contact with or comes close to the inner surfaces of the pair of side walls 53c.

The first regulated portion 16 protrudes forward from the lower end of the front edge of the outer peripheral wall 13 facing forward. Both end portions of the first regulated portion 16 in the left-right direction are located outside the connecting portion 15 in the left-right direction. The first regulated portion 16 also protrudes forward from the front end surface of the pedestal portion 13a, and the lower end surface of the first regulated portion 16 protrudes downward from the lower end of the outer peripheral surface of the outer peripheral wall 13. . The upper end surface of the first regulated portion 16 substantially coincides with the inner peripheral surface of the outer peripheral wall 13 when viewed from the front-rear direction. As shown in FIGS. 1 and 4, the front end surface of the first regulated portion 16 abuts a reinforcing protrusion 53d provided inside the operating member 53 in the front-rear direction. The reinforcing protrusion 53d protrudes rearward from the front wall 53b of the operating member 53, and connects the pair of side walls 53c in the left-right direction.

As shown in FIGS. 1 and 3, the discharger stopper 1 includes a second cover that is inserted into the cylinder 62 from the front of the cylinder 62 and is in contact with or close to the lower end of the inner peripheral surface of the cylinder 62. A regulating section 17 is provided.

The second regulated portion 17 protrudes rearward from the dispenser stopper 1. The second regulated portion 17 is formed on the rear end surface of the connecting portion 15 . The second regulated portion 17 has a rearwardly curved shape when viewed in cross section along the vertical direction. The second regulated portion 17 slides vertically over the lower end of the front opening edge of the cylinder 62 when the ejector stopper 1 is attached to or removed from the ejector 50 .

By moving the discharge device stopper 1 in the vertical direction with respect to the discharge device 50, the connecting portion of the discharge device main body 51 passes through the dividing portion 11 in the vertical direction while expanding and contracting in the cylinder circumferential direction, and the first cover The regulating portion 16 is inserted and removed between the pair of left and right side walls 53c, and the second regulated portion 17 is inserted and removed into the front end of the cylinder 62.

As explained above, the stopper 1 for a dispensing device according to the present embodiment includes an inner circumferential wall 12, an outer circumferential wall 13, and a pair of connecting walls 14. This makes it possible to expand and contract the divided portion 11 in the cylinder circumferential direction while elastically deforming both the inner circumferential wall 12 and the outer circumferential wall 13 when the dispensing device stopper 1 is attached to and detached from the discharging device 50. The fitting force of the ejector stopper 1 to the connecting portion of the ejector main body 51 can be increased while ensuring the flexibility of the ejector stopper 1.

As a result, it is possible to prevent the dispensing device stopper 1 from deforming and coming off the dispensing device 50 due to an unexpected external force. To prevent the dispensing device from becoming difficult to attach and detach from the dispensing device 50, and from causing the dispensing device stopper 1 to develop a habit in a short period of time after the start of use, resulting in the dividing portion 11 being kept expanded in the circumferential direction of the cylinder. Can be done. Therefore, while ensuring the operability of the stopper 1 for the ejector, it is possible to prevent it from coming off from the ejector 50 when an unexpected external force is applied, and to prevent it from shortening its lifespan.

The cylinder shaft O2 extends in the front-rear direction, and the operating member 53 extends in the up-down direction and is provided so as to be swingable in the front-rear direction around the upper end. As a result, even if the ejector stopper 1 is attached to a trigger-type liquid ejector, the ejector stopper 1 can be easily operated, and can be prevented from coming off from the ejector 50 when an unexpected external force is applied. and can suppress shortening of lifespan.

The discharger stopper 1 is inserted into the inside of the operating member 53 and includes a first regulated portion 16 that abuts or is close to the inner surfaces of the pair of left and right side walls 53c. As a result, when an external force is applied to the dispensing device stopper 1 in the left-right direction, the first regulated portion 16 abuts against the inner surface of the side wall 53c of the operating member 53, so that the dispensing device stopper 1 is moved against the dispensing device 50. It is possible to suppress displacement and dislodgement in the left-right direction. As a result, even if, for example, a large number of assemblies in which the ejector stopper 1 is attached to the ejector 50 are randomly housed and transported, the ejector stopper 1 will not easily come off from the ejector 50. Therefore, there is no need to excessively increase the fitting force of the dispensing device stopper 1 to the connecting portion of the dispensing device main body 51.

A second regulated portion 17 is provided that is inserted into the inside of the cylinder 62 from the front of the cylinder 62 and abuts or is close to the lower end of the inner circumferential surface of the cylinder 62. As a result, when an unexpected downward external force is applied to the dispenser stopper 1, the second regulated portion 17 abuts against the lower end of the inner peripheral surface of the cylinder 62, and the dispenser stopper 1 is prevented from discharging. It can be suppressed from being displaced downward and coming off with respect to the container 50.

An inner end portion 14a of the connecting wall 14 on the dividing portion 11 side along the left-right direction bulges toward the dividing portion 11 and is formed thicker than the other portions. As a result, the inner end 14a of the connecting wall 14 is hooked onto the upper part of the outer circumferential surface of the connecting portion of the ejector main body 51, and the fitting force of the ejector stopper 1 to the connecting portion is reliably secured. Therefore, it is possible to reliably prevent the dispensing device stopper 1 from coming off the dispensing device 50 due to an unexpected external force.

In this embodiment, the ejector main body 51 includes a storage cylinder 57, a storage plunger 58, a biasing member 59, and a coil spring 51d. As a result, even if the operating member 53 moves slightly toward the cylinder 62, the liquid inside the cylinder 62 is supplied to the storage space 57a, and the storage plunger 58 is moved backward against the forward biasing force of the biasing member 59. There is a possibility that the content liquid may be discharged from the discharge hole 52a. However, since such unintended discharge of the content liquid is prevented by the dispensing device stopper 1, the dispensing device main body 51 is equipped with a storage cylinder 57, a storage plunger 58, a biasing member 59, and a coil spring 51d. In the dispenser 50, the dispenser stopper 1 has remarkable effects.

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

If the discharge device 50 is configured such that when the operation member 53 moves toward the cylinder 62 side, the inside of the cylinder 62 is pressurized and the content liquid is discharged from the discharge hole 52a, the discharge device 50 is configured to discharge the liquid from the discharge hole 52a. A conventional trigger-type liquid ejector without the plunger 58 may also be used. The cylinder shaft extends in the vertical direction, and includes a mounting cap that is attached to the mouth and fixes the cylinder to the mouth, and a stem that is movable downward in an upwardly biased state and linked to the piston, A pump may be employed in which the operating member is attached to the upper end of the stem and has a discharge hole for the liquid content. Further, for this pump, a former pump may be adopted, which further includes an air cylinder, an air piston, and a gas-liquid mixing chamber, and discharges the foamed content liquid from a discharge hole. In the latter two pumps, the ejector stopper may be removably attached to the stem, attachment cap, etc. of the ejector main body.

(Second embodiment)
Next, a stopper 2 for an ejector according to a second embodiment of the present invention will be described with reference to FIGS. 5 and 6. In addition, in this 2nd embodiment, the same code|symbol is attached|subjected to the same component as the component in 1st Embodiment, the description is abbreviate|omitted, and only a different point will be described.

First, the ejector to which the ejector stopper 2 is attached will be explained. The ejector 150 is a conventional trigger-type liquid ejector without the reservoir cylinder 57 and reservoir plunger 58 shown in FIG. For example, an injection cylinder part 60 extends forward from the upper end of the vertical supply cylinder part 54 instead of the connection cylinder part 55 shown in FIG. A nozzle member 52 without 52d is attached. The ejector 150 includes a biasing member 53e that engages with the operating member 53 and biases the operating member 53 forward, in place of the coil spring 51d shown in FIG. The biasing members 53e are made of a resin material and are provided on both sides of the injection cylinder portion 60 in the left-right direction. The relative movement of the operating member 53 and the piston 61 in the front-back direction is restricted.

Next, the stopper 2 for the ejector will be explained. The discharger stopper 2 does not have the connecting portion 15, the pedestal portion 13a, the knob 13b, the first regulated portion 16, and the second regulated portion 17 shown in FIGS. 2 and 3. Note that the ejector stopper 2 may be provided with a first regulated portion 16 and a second regulated portion 17. Since the discharge device stopper 2 does not include the first regulated portion 16 that is inserted into the inside of the operating member 53, when an unexpected external force in the left and right direction is applied to the operating member 53, the dividing portion 11 will close to the cylinder periphery. It is possible to prevent the ejector stopper 2 from deforming so as to expand in the direction.

In the discharger stopper 2, as shown in FIG. 6, the inner end portion 14a of the connecting wall 14 on the dividing portion 11 side along the left-right direction extends in the up-down direction when viewed from the front-back direction. The inner end portions 14a of the connecting wall 14 extend upwardly away from each other in the cylinder circumferential direction when viewed from the front-rear direction. The outer peripheral wall 13 has a U-shape that is open upward and elongated in the vertical direction when viewed from the front and back directions. The outer peripheral wall 13 includes a pair of left and right vertical walls 13c, and a lower wall 13d that connects the lower ends of the vertical walls 13c. The lower part of the vertical wall 13c extends in the vertical direction and is thicker than the upper and lower walls 13d of the vertical wall 13c. The lower wall 13d has a downwardly curved shape when viewed from the front-rear direction.

On the outer circumferential surface of the outer circumferential wall 13, at least two knob protrusions protrude outward in the cylinder radial direction at a portion located on the opposite side of the dividing portion 11 sandwiching the cylinder axis O2 in the cylinder radial direction when viewed from the front-rear direction. Pieces 13e are formed at intervals in the circumferential direction. The knob protrusion 13e extends downward from the lower end of the vertical wall 13c. The thickness of the knob protrusion 13e is equal to the thickness of the lower part of the vertical wall 13c. The knob protrusion 13e is provided at a position away from the dividing portion 11 in the cylinder circumferential direction.

The two knob protrusions 13e each extend in a direction away from each other in the cylinder circumferential direction toward the outside in the cylinder radial direction. The knob protrusion 13e has a curved shape that protrudes inward in the left-right direction when viewed from the front-rear direction. The lower end of the knob 13e is located below the lower end of the lower wall 13d. The two knob protrusions 13e have a symmetrical shape with respect to a straight line passing through the cylinder axis O2 and extending in the up-down direction when viewed from the front-rear direction.

In a space surrounded by the outer circumferential surface of the inner circumferential wall 12 and the inner circumferential surface of the outer circumferential wall 13, a regulating portion 18 that abuts the operating member 53 in the front-rear direction is provided. The regulating portion 18 projects downward from the lower end of the outer circumferential surface of the inner circumferential wall 12 . The regulating portion 18 is formed into a rectangular parallelepiped shape extending in the front-rear direction. The regulating portion 18 is spaced apart from the outer peripheral wall 13. The front end surface of the regulating portion 18 abuts a reinforcing protrusion 53d provided inside the operating member 53 in the front-rear direction. Note that the regulating portion 18 may be in contact with the outer circumferential wall 13 or may protrude from the inner circumferential surface of the outer circumferential wall 13.

The rear end edges of the inner circumferential wall 12, the outer circumferential wall 13, and the regulating portion 18 extend straight in the vertical direction. The front end edges of the inner circumferential wall 12, the outer circumferential wall 13, and the regulating portion 18 extend forward as they go downward. The front edge of each of the inner circumferential wall 12, the outer circumferential wall 13, and the regulating portion 18 coincides with the rear edge of the side wall 53c of the operating member 53 in a cross-sectional view along the up-down direction.

As explained above, according to the dispensing device stopper 2 of this embodiment, the two knob protrusions 13e are formed on the outer circumferential surface of the outer circumferential wall 13. As a result, when the two knob protrusions 13e are pinched toward each other in the cylinder circumferential direction, the dividing portion 11 is expanded in the cylinder circumferential direction, and the dispensing device stopper 2 is easily attached to the connecting portion of the dispensing device main body 51. It can be attached and detached.

The two knob protrusions 13e each extend in a direction that separates from each other in the cylinder circumferential direction toward the outside in the cylinder radial direction. Thereby, when the two knob protrusions 13e are pinched toward each other in the cylinder circumferential direction, the dividing portion 11 can be reliably expanded in the cylinder circumferential direction.

A regulating portion 18 that abuts the operating member 53 in the front-rear direction is provided in a space surrounded by the outer circumferential surface of the inner circumferential wall 12 and the inner circumferential surface of the outer circumferential wall 13. Thereby, it becomes possible to bring the discharge device stopper 2 into contact with the operating member 53 in the front-rear direction over a wide range, and it is possible to reliably restrict the movement of the operating member 53 toward the cylinder 62 side.

In addition, without departing from the spirit of the present invention, it is possible to appropriately replace the components in the embodiments with well-known components, and the embodiments and the modified examples may be combined as appropriate.

Aspects of the present invention are, for example, as follows.
<1>
a discharger body comprising a piston, and a cylinder into which the piston is fitted and whose interior is pressurized and depressurized as the piston moves along the cylinder axis;
a nozzle member that is attached to the discharge device body and has a discharge hole formed therein through which the liquid content from within the cylinder is discharged;
an operating member connected to the piston and provided so as to be movable toward and away from the cylinder;
In addition to providing
A stopper for a discharge device that is used when attached to a discharge device that pressurizes the inside of the cylinder and discharges the liquid content from the discharge hole when the operating member moves toward the cylinder side,
The cylinder is attached to the operating member in a state in which it is removably fitted onto a coupling portion that is located closer to the operating member in the cylinder axial direction than the cylinder in the discharge device main body and extends in the cylinder axial direction. restricting movement of the operating member toward the cylinder by abutting in the axial direction;
When viewed from the cylinder axis direction, it is formed in a part of the circumferential direction of the cylinder that revolves around the cylinder axis, and has a C-shape, including a dividing part that divides the extension in the circumferential direction of the cylinder,
an inner peripheral wall surrounding the outer peripheral surface of the connecting portion;
an outer peripheral wall surrounding the outer peripheral surface of the inner peripheral wall;
a pair of connecting walls that separately connect end portions of the inner circumferential wall and the outer circumferential wall in the cylinder circumferential direction;
Equipped with a stopper for the dispenser.
<2>
The cylinder shaft extends in the front-rear direction,
The operating member extends in the vertical direction and is provided to be swingable in the front-back direction around the upper end,
The connecting portion is a portion of the piston that protrudes forward from the cylinder,
The operating member is
A front wall whose front and back surfaces face in the front-rear direction;
a pair of left and right side walls that protrude rearward from the front wall, and whose front and back surfaces face in a left-right direction perpendicular to the front-rear direction and the up-down direction;
used by being attached to the ejector comprising;
The dividing portion is provided at the upper end of the ejector stopper,
The dispenser stopper according to <1>, wherein the dispenser stopper is provided with a first regulated portion that is inserted inside the operating member and is in contact with or close to the inner surfaces of the pair of left and right side walls. stopper.
<3>
The dispensing device stopper according to <2>, which is inserted into the inside of the cylinder from the front of the cylinder and is provided with a second regulated portion that abuts or is close to the lower end of the inner circumferential surface of the cylinder. .
<4>
When viewed from the cylinder axis direction, the front and back surfaces of the connecting wall face one direction in the cylinder radial direction that intersects the cylinder axis, in which the dividing portion penetrates the discharger stopper,
The connecting wall connects end portions of the inner circumferential wall and the outer circumferential wall in the cylinder circumferential direction to each other in the other direction perpendicular to the one direction when viewed from the cylinder axis direction,
Of the connecting walls, an inner end portion on the dividing portion side along the other direction bulges toward the dividing portion and is formed thicker than other portions, <1> to <3>. >The stopper for a dispensing device according to any one of the above.
<5>
On the outer circumferential surface of the outer circumferential wall, when viewed from the cylinder axis direction, a portion located on the opposite side of the divided portion sandwiching the cylinder axis in the cylinder radial direction intersecting the cylinder axis, and on the outside in the cylinder radial direction. The stopper for a discharge device according to <1>, wherein at least two knob protrusions protruding toward the cylinder are formed at intervals in the circumferential direction of the cylinder.
<6>
The at least two knob protrusions are two knob protrusions,
The stopper for an ejector according to <5>, wherein the two knob protrusions each extend in a direction away from each other in the circumferential direction of the cylinder as they go outward in the radial direction of the cylinder.
<7>
The space surrounded by the outer circumferential surface of the inner circumferential wall and the inner circumferential surface of the outer circumferential wall is provided with a regulating portion that abuts on the operating member in the cylinder axial direction, <5> or <2>. 6>, the stopper for a dispensing device.

1, 2 Discharger stopper 11 Dividing portion 12 Inner peripheral wall 13 Outer peripheral wall 13e Knob protrusion 14 Connecting wall 14a Inner end 16 First regulated portion 17 Second regulated portion 18

Regulating portion

50, 150 Discharger 51 Dispenser main body 52 Nozzle member 52a Discharge hole 53 Operation member

53b Front wall

53c Side wall 61 Piston (connection part)
62 cylinder O2 cylinder shaft

Claims

a discharger body comprising a piston, and a cylinder into which the piston is fitted and whose interior is pressurized and depressurized as the piston moves along the cylinder axis;
a nozzle member that is attached to the discharge device body and has a discharge hole formed therein through which the liquid content from within the cylinder is discharged;
an operating member connected to the piston and provided so as to be movable toward and away from the cylinder;
In addition to providing
A stopper for a discharge device that is used when attached to a discharge device that pressurizes the inside of the cylinder and discharges the liquid content from the discharge hole when the operating member moves toward the cylinder side,
The cylinder is attached to the operating member in a state in which it is removably fitted onto a coupling portion that is located closer to the operating member in the cylinder axial direction than the cylinder in the discharge device main body and extends in the cylinder axial direction. restricting movement of the operating member toward the cylinder by abutting in the axial direction;
When viewed from the cylinder axis direction, it is formed in a part of the circumferential direction of the cylinder that revolves around the cylinder axis, and has a C-shape, including a dividing part that divides the extension in the circumferential direction of the cylinder,
an inner peripheral wall surrounding the outer peripheral surface of the connecting portion;
an outer peripheral wall surrounding the outer peripheral surface of the inner peripheral wall;
a pair of connecting walls that separately connect end portions of the inner circumferential wall and the outer circumferential wall in the cylinder circumferential direction;
It is equipped with
Stopper for dispenser.
The cylinder shaft extends in the front-rear direction,
The operating member extends in the vertical direction and is provided to be swingable in the front-back direction around the upper end,
The connecting portion is a portion of the piston that protrudes forward from the cylinder,
The operating member is
A front wall whose front and back surfaces face in the front-rear direction;
a pair of left and right side walls that protrude rearward from the front wall, and whose front and back surfaces face in a left-right direction perpendicular to the front-rear direction and the up-down direction;
used by being attached to the ejector comprising;
The dividing portion is provided at the upper end of the ejector stopper,
The ejector stopper is provided with a first regulated portion that is inserted into the inside of the operating member and is in contact with or in close proximity to the inner surfaces of the pair of left and right side walls.
The stopper for a discharger according to claim 1.
A second regulated portion is inserted into the inside of the cylinder from the front of the cylinder and is in contact with or close to a lower end portion of the inner circumferential surface of the cylinder.
The stopper for a discharger according to claim 2.
When viewed from the cylinder axis direction, the front and back surfaces of the connecting wall face one direction in the cylinder radial direction that intersects the cylinder axis, in which the dividing portion penetrates the discharger stopper,
The connecting wall connects end portions of the inner circumferential wall and the outer circumferential wall in the cylinder circumferential direction to each other in the other direction perpendicular to the one direction when viewed from the cylinder axis direction,
Of the connecting wall, an inner end portion on the dividing portion side along the other direction bulges toward the dividing portion and is formed thicker than other portions.
The stopper for a discharger according to any one of claims 1 to 3.
On the outer circumferential surface of the outer circumferential wall, when viewed from the cylinder axis direction, a portion located on the opposite side of the divided portion sandwiching the cylinder axis in the cylinder radial direction intersecting the cylinder axis, and on the outside in the cylinder radial direction. at least two knob protrusions protruding toward the cylinder are formed at intervals in the circumferential direction of the cylinder;
The stopper for a discharger according to claim 1.
The at least two knob protrusions are two knob protrusions,
The two knob protrusions each extend away from each other in the circumferential direction of the cylinder as they go outward in the radial direction of the cylinder.
The stopper for a discharger according to claim 5.
A regulating portion that abuts the operating member in the cylinder axial direction is provided in a space surrounded by the outer circumferential surface of the inner circumferential wall and the inner circumferential surface of the outer circumferential wall.
The stopper for a discharger according to claim 5 or 6.