JP2022011626A - Discharge device - Google Patents

Abstract

To provide a discharge container which may inhibit contents from contacting with a biasing member during circulation etc.SOLUTION: A discharge device 12 of the invention includes: a stem 20; a cylinder 23 into which the stem 20 is inserted; a piston 22 which is vertically slidably fitted with an inner peripheral surface of the cylinder 23 in cooperation with vertical movement of the stem 20; a discharge head 101 fixed to an upper end of the stem 20; a biasing member 28 which is disposed in the cylinder 23 and biases the stem 20 upward; a valve body 47 which closes a lower end opening of the cylinder 23 when the interior of the cylinder 23 is compressed and opens the lower end opening when the interior of the cylinder 23 is decompressed; and a restriction member 27 which restricts the discharge head 101 and the stem 20 from moving up at a descent end position P1 of the discharge head 101 and the stem 20. A valve body restriction member 48 which restricts upward movement of the valve body 47 in the descent end position P1 is provided between the stem 20 and the valve body 47.SELECTED DRAWING: Figure 1

Description

The present invention relates to a discharger.

The discharge container has a configuration in which a discharger is attached to the mouth of the container body. In Patent Document 1 below, a fixed suction portion having a cylinder and attached to the mouth of the container body, a stem and a head, and a fixed suction portion that can be moved downward in an upwardly urged state by a coil spring. Dischargers comprising an actuating member to be combined are disclosed.

According to this configuration, the contents in the cylinder can be discharged through the discharge head by pushing down the operating member, and the contents in the cylinder are restored and moved upward by the coil spring. It is stated that it can be sucked up.

Japanese Unexamined Patent Publication No. 2019-26324

However, in the conventional discharge container, for example, due to vibration or posture during distribution, the contents penetrate into the cylinder through a minute gap between the valve body and the valve seat, and become a coil spring which is an urging member. There was a risk of contact.

One aspect of the present invention has been made to solve the above-mentioned problems, and suppresses the infiltration of the contents into the cylinder at the time of distribution or the like, and prevents the contents from coming into contact with the urging member. One of the purposes is to provide a discharge container that can be suppressed.

In order to achieve the above object, the ejector of one aspect of the present invention is attached to the inside of the mouth portion of the container body, a stem disposed so as to be movable downward in an upwardly urged state, and the mouth portion. The mounting cap is attached, and the tubular cylinder into which the stem is inserted is linked to the vertical movement of the stem in the cylinder, and is slidably fitted to the inner peripheral surface of the cylinder. A piston, a discharge head fixed to the upper end of the stem and having a discharge port for discharging the contents, an urging member disposed in the cylinder and urging the stem upward, and the cylinder. A valve body that is disposed in the lower end opening of the cylinder, closes the lower end opening when pressurization in the cylinder, and opens the lower end opening when depressurization in the cylinder, and an upper portion of the cylinder with the stem inserted. The discharge head and the regulating member for restricting the ascent of the stem at the descending end position of the stem are provided in the above, and at the descending end position between the stem and the valve body. A valve body restricting member for restricting the upward movement of the valve body is provided.

During distribution of the ejector of one aspect of the present invention, the ejection head and stem are in the descending end position where the upward movement is restricted by the restricting member. Here, in the discharger of one aspect of the present invention, since the valve body restricting member is provided between the stem and the valve body, the valve body restricting member restricts the upward movement of the valve body at the descending end position. Will be done. This prevents the valve body from moving upward and forming a path for the contents to enter the cylinder. In this way, it is possible to realize a discharger capable of suppressing the intrusion of the contents into the cylinder during distribution and the like and suppressing the contact with the urging member.

In the discharger of one aspect of the present invention, at least a part of the valve body regulating member is formed integrally with the valve body on the upper surface of the valve body, and the upper end of the valve body regulating member is formed at the descending end position. However, the stem may be configured to restrict the upward movement of the valve body by abutting on the stem or another part of the valve body restricting member provided on the stem.

According to this configuration, at the position of the discharge head and the descending end of the stem, the upper end of at least a part of the valve body regulating member formed integrally with the valve body is the stem or another valve body regulating member provided on the stem. By contacting a part of the valve body, the upward movement of the valve body is restricted, and the formation of an infiltration path for the contents is suppressed. Therefore, at least by changing the design of the valve body, it is possible to obtain the effect of suppressing the contents from coming into contact with the urging member.

In the discharger of one aspect of the present invention, at least a part of the valve body regulating member is formed integrally with the stem at the lower end of the stem, and at the descending end position, the lower end of the valve body regulating member is formed. The upward movement of the valve body may be restricted by abutting on the valve body or another part of the valve body restricting member provided on the valve body.

According to this configuration, at the lower end position of the discharge head and the stem, at least a part of the lower end of the valve body regulating member integrally formed with the stem is the valve body or the valve body regulating member provided on the valve body. By abutting on a part of the valve body, the upward movement of the valve body is restricted, and the formation of the infiltration path of the contents is suppressed. Therefore, at least by changing the design of the stem, it is possible to obtain the effect of suppressing the contents from coming into contact with the urging member.

According to one aspect of the present invention, it is possible to provide a discharge container capable of suppressing the infiltration of the contents into the cylinder during distribution and suppressing the contact of the urging member of the contents.

It is a figure which shows the discharger of 1st Embodiment, and is sectional drawing of the discharger which shows the state which the discharge head and the stem are in the descending end position. It is sectional drawing of the discharger which shows the state which the discharge head and the stem are in the raised end position. It is a figure which shows the ejector of 2nd Embodiment, and is sectional drawing of the ejector which shows the state which the ejection head and the stem are in the descending end position. It is sectional drawing of the discharger which shows the state which the discharge head and the stem are in the raised end position.

[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
In the following description, the discharge container in which the discharger according to the present invention is attached to the container body will be described.

As shown in FIGS. 1 and 2, the discharge container 10 of the present embodiment includes a bottomed cylindrical container body 11 and a discharger 12 detachably attached to the mouth portion 11a of the container body 11. ing. The container body 11 is configured to accommodate the contents. The content is, for example, a liquid such as shampoo, body soap, or cosmetics.

The discharger 12 includes a pump mechanism 14 and an exterior member 15 attached to the pump mechanism 14. The pump mechanism 14 includes a stem 20, a piston 22, a cylinder 23, a lower valve body 25, a closing member 26, a regulating member 27, an urging member 28, and the like. Of the pump mechanism 14, at least the stem 20, the piston 22, and the cylinder 23 are formed in a cylindrical shape coaxially arranged on a common axis. Hereinafter, the common axis is referred to as an axis O, and the direction along the axis O is referred to as a vertical direction. Of the vertical directions, the direction from the bottom of the container body 11 toward the discharger 12 is upward, and the direction from the discharger 12 toward the bottom of the container body 11 is downward. Further, in a plan view seen from the vertical direction, the direction that intersects the axis O is referred to as a radial direction, and the direction that orbits around the axis O is referred to as a circumferential direction.

The cylinder 23 is formed in a multi-stage cylinder shape in which the outer diameter increases as the cylinder 23 is located above. Specifically, in the cylinder 23, a mounting cylinder 31, an accommodating cylinder 32, a sliding cylinder 33, and a protruding cylinder 34 are connected from the lower side to the upper side.

A suction cylinder 41 is fitted to the mounting cylinder 31. The suction cylinder 41 extends to a position where the lower end opening is close to the bottom of the container body 11.

An introduction hole 33a that penetrates the sliding cylinder 33 in the radial direction is formed in the upper portion of the sliding cylinder 33. A flange portion 42 is provided so as to project outward from the upper end opening edge of the sliding cylinder 33 in the radial direction. The flange portion 42 is formed over the entire circumference of the sliding cylinder 33. The flange portion 42 is arranged with the packing 44 interposed therebetween on the upper end opening edge of the mouth portion 11a in a state where the discharger 12 is attached to the container body 11. The projecting cylinder 34 extends upward from the flange portion 42.

The lower valve body 25 is housed in the storage cylinder 32 of the cylinder 23. Specifically, the lower valve body 25 includes a fitting cylinder 45, a lower regulation cylinder 46, a valve body 47, and a valve body regulation member 48.

The fitting cylinder 45 is formed in the shape of a ridged cylinder. The peripheral wall portion of the fitting cylinder 45 is fitted to the lower part of the accommodating cylinder 32 of the cylinder 23. Further, the lower regulation cylinder 46 is projected upward from the top wall portion of the fitting cylinder 45 in the accommodation cylinder 32.

The valve body 47 is composed of a three-point valve connected to the inner peripheral surface of the peripheral wall portion of the fitting cylinder 45 via an elastically deformable connecting piece 49. That is, the valve body 47 is configured to be elastically displaced in the vertical direction with respect to the fitting cylinder 45 according to the elastic deformation of the connecting piece 49. The valve body 47 is seated in the accommodating cylinder 32 of the cylinder 23 from above with respect to the annularly projecting valve seat 50 formed at the lower end opening edge of the accommodating cylinder 32.

The valve body 47 functions as a check valve that closes the lower end opening of the cylinder 23 when pressurizing in the cylinder 23, while opening the lower end opening of the cylinder 23 when depressurizing in the cylinder 23. That is, the valve body 47 sits on the valve seat 50 during pressurization in the cylinder 23, and prevents the contents flowing into the cylinder 23 from returning to the container body 11 through the lower end opening of the accommodating cylinder 32. On the other hand, the valve main body 47 rises from the valve seat 50 at the time of depressurization in the cylinder 23, and the contents in the container main body 11 flow into the cylinder 23 through the lower end opening of the accommodating cylinder 32.

The valve body regulating member 48 is composed of a rod-shaped member integrally formed with the valve body 47 on the upper surface of the valve body 47. That is, the valve body restricting member 48 extends upward along the axis O from the upper surface of the valve body 47. The valve body regulating member 48 is provided between the stem 20 (piston guide 24) and the valve body 47 inside the lower regulating cylinder 46, and the valve body 47 is provided at the discharge head 101 and the descending end position P1 of the stem 20. Regulate upward movement.

The stem 20 includes a tubular stem body 21 and a piston guide 24 fitted to the lower part of the stem body 21.

The piston guide 24 is configured to be vertically movable together with the stem main body 21 in the cylinder 23. Specifically, the piston guide 24 includes a plug portion 51 and a mounting portion 52 extending above the plug portion 51.

The plug portion 51 is formed in the shape of a climax cylinder. The plug portion 51 switches communication and disconnection between the accommodating cylinder 32 of the cylinder 23 and the inside of the sliding cylinder 33 as the piston guide 24 moves up and down. Specifically, at the lower end position P1 of the discharge head 101 and the stem 20 shown in FIG. 1, the lower portion of the peripheral wall portion of the plug portion 51 is fitted in the accommodating cylinder 32. As a result, the communication between the inside of the accommodating cylinder 32 and the inside of the sliding cylinder 33 is cut off in the vertical direction. On the other hand, at the rising end position P2 of the discharge head 101 and the stem 20 shown in FIG. 2, the lower portion of the peripheral wall portion of the plug portion 51 is separated upward from the accommodating cylinder 32. As a result, the inside of the accommodating cylinder 32 and the inside of the sliding cylinder 33 communicate with each other.

Proximity protrusions 51a are formed on the peripheral wall portion of the plug portion 51 toward the outer side in the radial direction. A plurality of proximity protrusions 51a are formed at intervals in the circumferential direction. The radial outer end surface of the proximity projection 51a is located radially outside the inner peripheral surface of the accommodating cylinder 32 and radially inside the inner peripheral surface of the sliding cylinder 33. The proximity projection 51a is close to or abuts on the upper end opening edge of the storage cylinder 32 from above the storage cylinder 32 with the discharge head 101 and the stem 20 at the descending end position P1.

The mounting portion 52 includes a plurality of divided peripheral walls arranged at intervals in the circumferential direction, and ribs that separately protrude inward in the radial direction from the central portion in the circumferential direction of the plurality of divided peripheral walls. .. The outer peripheral surface of the divided peripheral wall is located radially inside the peripheral wall portion of the plug portion 51. The radial inner ends of each rib are connected to each other on the axis O. The ribs are arranged over the entire vertical direction on the divided peripheral wall. The mounting portion 52 communicates inside and outside the divided peripheral walls through between the divided peripheral walls adjacent to each other in the circumferential direction. The mounting portion 52 may be configured to have a through hole that penetrates the tubular portion in the radial direction in the tubular portion that extends continuously over the entire circumference in the circumferential direction.

The stem main body 21 is inserted into the sliding cylinder 33 of the cylinder 23 from above the cylinder 23. The stem main body 21 is arranged inside the mouth portion 11a in a state where the discharger 12 is attached to the container main body 11. The stem main body 21 is configured to be movable downward in the cylinder 23 in an upwardly urged state by the urging member 28 via the piston guide 24. The stem main body 21 includes a lower cylinder portion 61 and an upper cylinder portion 62 formed to have a diameter smaller than that of the lower cylinder portion 61.

The lower cylinder portion 61 surrounds the periphery of the mounting portion 52 of the piston guide 24. A gap is formed over the entire circumferential direction between the inner peripheral surface of the lower cylinder portion 61 and the outer peripheral surface of the mounting portion 52 (divided peripheral wall). A step portion 63 is formed on the upper end opening edge of the lower cylinder portion 61 toward the inside in the radial direction. In the illustrated example, the step portion 63 is formed in a tapered shape that is inclined inward in the radial direction toward the upper side. However, the step portion 63 may be provided so as to project in a direction orthogonal to the axis O.

The upper cylinder portion 62 extends upward from the inner end portion (upper end portion) in the radial direction of the step portion 63. A mounting portion 52 (divided peripheral wall) is fitted in the lower portion of the upper cylinder portion 62.

The piston 22 has a configuration in which the outer cylinder and the inner cylinder are connected by a connecting portion. The outer diameter of the outer cylinder increases from the central part in the vertical direction toward both sides. The outer cylinder is configured so that both ends in the vertical direction can slide in the vertical direction on the inner peripheral surface of the sliding cylinder 33. The inner cylinder is slidably fitted in the lower cylinder portion 61 of the stem main body 21 in the vertical direction.

As shown in FIG. 2, the piston 22 closes the introduction hole 33a of the cylinder 23 by the outer cylinder at the rising end position P2 of the stem 20. Specifically, both ends of the outer cylinder in the vertical direction are in close contact with the portions of the inner peripheral surface of the sliding cylinder 33 located on both sides in the vertical direction with respect to the introduction hole 33a, whereby the introduction hole 33a is formed. It is blocked.

The closing member 26 is arranged in a portion of the cylinder 23 located above the piston 22. The closing member 26 is formed in a cylindrical shape arranged coaxially with the axis O. The closing member 26 surrounds the stem main body 21 (upper cylinder portion 62). Specifically, the closing member 26 includes a seal cylinder 71 and a surrounding cylinder 72.

The outer diameter of the seal cylinder 71 increases from the central portion in the vertical direction toward both sides. The seal cylinder 71 is configured so that both ends in the vertical direction can slide in the vertical direction on the inner peripheral surface of the sliding cylinder 33.

The seal cylinder 71 closes the introduction hole 33a at the lower end position P1 of the discharge head 101 and the stem 20 shown in FIG. Specifically, both ends of the seal cylinder 71 in the vertical direction are in close contact with the portions of the inner peripheral surface of the sliding cylinder 33 located on both sides in the vertical direction with respect to the introduction hole 33a, whereby the introduction hole 33a Is blocked. As a result, when the stem 20 is at the descending end position P1 such as when the discharge container 10 is distributed, the communication between the inside of the container body 11 and the inside of the cylinder 23 through the introduction hole 33a is cut off. On the other hand, at the rising end position P2 of the discharge head 101 and the stem 20 shown in FIG. 2, the lower end portion of the seal cylinder 71 is in contact with the upper end portion of the outer cylinder of the piston 22. In the present embodiment, the seal cylinder 71 faces the step portion 63 of the stem main body 21 in the vertical direction.

The surrounding cylinder 72 extends upward from the seal cylinder 71. The surrounding cylinder 72 has a reduced diameter with respect to the seal cylinder 71. The lower end edge of the surrounding cylinder 72 faces the step portion 63 of the stem main body 21 in the vertical direction. The surrounding cylinder 72 projects upward from the protruding cylinder 34 through a gap between the inner peripheral surface of the cylinder 23 and the outer peripheral surface of the stem main body 21 (upper cylinder portion 62). At the descending end position P1, the upper end edge of the surrounding cylinder 72 is arranged at the same position as the upper end edge of the stem main body 21.

The urging member 28 is interposed between the piston guide 24 and the lower valve body 25 in the cylinder 23. The urging member 28 is composed of, for example, a coil spring. The urging member 28 is arranged in the accommodating cylinder 32 so as to surround the circumference of the lower regulation cylinder 46. The lower end of the urging member 28 is supported on the upper surface of the fitting cylinder 45. The upper end of the urging member 28 is supported by the top wall portion of the plug portion 51. As a result, the urging member 28 urges the stem body 21 upward via the piston guide 24. That is, the urging member 28 urges the stem 20 upward.

The urging member 28 is preferably made of metal in view of ease of manufacture and physical properties that do not easily settle even in a compressed state for a long period of time. In the present embodiment, the constituent members other than the urging member 28 are made of a resin material. The urging member 28 is not limited to the coil spring, and other urging members may be used. Further, the urging member 28 may be made of a resin material.

The regulating member 27 is attached to the upper end of the cylinder 23. The regulating member 27 includes a base cylinder 81, a connecting flange 82, a fitting cylinder 83, and an exterior cylinder 84. Further, the base cylinder 81 includes a detent cylinder 86 and a regulation cylinder 87 connected above the detent cylinder 86. That is, in the present embodiment, the regulating member 27 is formed of a member separate from the cylinder 23, and is composed of a ring-shaped member fixed to the upper end of the cylinder 23.

The detent tube 86 is arranged coaxially with the axis O. The detent cylinder 86 is inserted into the protruding cylinder 34 of the cylinder 23. On the outer peripheral surface of the detent cylinder 86 and the inner peripheral surface of the projecting cylinder 34, a detent portion 88 that engages with each other in the circumferential direction to regulate the relative rotation of the restricting member 27 with respect to the cylinder 23 is formed. The detent portion 88 is configured such that the ribs extending in the vertical direction are engaged with each other or the ribs and the groove are engaged with each other. The detent cylinder 86 is formed in the vertical direction over substantially the entire length of the protruding cylinder 34.

The regulation cylinder 87 is connected upward from the detent cylinder 86. Specifically, the regulation cylinder 87 is arranged coaxially with the axis O. The inner peripheral surface of the regulation cylinder 87 is arranged flush with the inner peripheral surface of the detent cylinder 86. A male screw portion is formed on the outer peripheral surface of the regulation cylinder 87.

The connecting flange 82 projects radially outward from the vertical center portion (the boundary portion between the detent cylinder 86 and the regulation cylinder 87) of the base cylinder 81. The fitting cylinder 83 extends downward from the connecting flange 82. A protruding cylinder 34 of the cylinder 23 is fitted in the fitting cylinder 83 by a plug or the like. As a result, the fitting cylinder 83 surrounds the periphery of the protruding cylinder 34. Further, the outer cylinder 84 extends downward from the outer peripheral edge of the connecting flange 82. The outer cylinder 84 surrounds the fitting cylinder 83.

The exterior member 15 includes a mounting cap 100 and a discharge head 101. The exterior member 15 is exposed to the outside of the discharger 12 in a state where the discharger 12 is attached to the container body 11.

The mounting cap 100 is formed in the shape of a ridged cylinder. The top wall portion 103 of the mounting cap 100 is formed with an insertion hole 105 that penetrates the top wall portion 103 in the vertical direction. The above-mentioned protruding cylinder 34 and fitting cylinder 83 are inserted into the insertion hole 105.

The peripheral wall portion 106 of the mounting cap 100 extends downward from the outer peripheral edge of the top wall portion 103. The peripheral wall portion 106 is detachably screwed to the mouth portion 11a of the container body 11. That is, the pump mechanism 14 is mounted on the container body 11 via the mounting cap 100. However, the mounting cap 100 may be mounted on the mouth portion 11a by a method other than screwing, such as undercut fitting.

The discharge head 101 includes an operation unit 110, a mounting cylinder 111, a connecting cylinder 112, and a discharge cylinder 113. The operation unit 110 is formed in a ridged cylinder shape.

The mounting cylinder 111 extends downward from the top plate portion of the operation portion 110. The mounting cylinder 111 is arranged coaxially with the axis O. The lower portion of the mounting cylinder 111 is fitted in the stem main body 21 (upper cylinder portion 62) by a plug or the like.

A protruding piece 120 is formed in a portion of the mounting cylinder 111 located above the stem main body 21. The projecting piece 120 projects radially outward from the mounting cylinder 111 and extends along the vertical direction. The upper end of the projecting piece 120 is connected to the top plate portion of the operating portion 110. The lower end edge of the projecting piece 120 is close to or in contact with the upper end edge of the upper cylinder portion 62 of the stem main body 21 from above the upper cylinder portion 62. That is, the protruding piece 120 restricts the downward movement of the discharge head 101 with respect to the stem 20. Further, the lower end edge of the projecting piece 120 is close to or in contact with the upper end edge of the surrounding cylinder 72 from above the surrounding cylinder 72.

The connecting cylinder 112 extends downward from the top plate portion of the operating portion 110. The connecting cylinder 112 surrounds the mounting cylinder 111. The connecting cylinder 112 is screwed to the regulating cylinder 87 of the regulating member 27 at the descending end position P1 shown in FIG. As a result, the stem 20 is held at the descending end position P1.

The discharge cylinder 113 is formed so as to penetrate the peripheral wall portion of the operation portion 110 and the connecting cylinder 112 in the radial direction. The radial inner opening of the discharge cylinder 113 communicates with the inside of the mounting cylinder 111. The radial outer opening of the discharge cylinder 113 constitutes a discharge port 113a that communicates with the inside of the stem main body 21 through the mounting cylinder 111 and the discharge cylinder 113.

Next, a method of discharging the contents by the discharge container 10 having the above configuration will be described.
First, as shown in FIG. 1, the discharge head 101 located at the descending end position P1 is rotated with respect to the regulation member 27 in the fastening release direction around the axis O, so that the connection cylinder 112 of the discharge head 101 and the regulation member are rotated. The screwing with the regulation cylinder 87 of 27 is released.

As a result, as shown in FIG. 2, the discharge head 101, the stem main body 21, and the piston guide 24 rise with respect to the cylinder 23, and the plug portion 51 of the piston guide 24 is disengaged from the accommodating cylinder 32 of the cylinder 23 and accommodated. The inside of the cylinder 32 and the inside of the sliding cylinder 33 communicate with each other. Then, the piston guide 24, the stem main body 21, and the discharge head 101 are integrally raised by the upward urging force of the urging member 28. In this process, the top wall portion of the plug portion 51 engages with the lower end portion of the inner cylinder of the piston 22, so that the piston 22 also rises together with the piston guide 24.

When the stem body 21 or the like rises, the pressure inside the cylinder 23 is reduced, so that the lower valve body 25 (valve body 47) opens the lower end opening of the cylinder 23, and the contents inside the container body 11 are the suction cylinder 41. It flows into the cylinder 23 through the cylinder 23. Further, the upper end opening edge of the outer cylinder of the piston 22 engages with the lower end edge of the seal cylinder 71 to raise the seal cylinder 71. As a result, the seal cylinder 71 is separated upward from the introduction hole 33a, while the outer cylinder of the piston 22 closes the introduction hole 33a.

From this state, when the discharge head 101 is pushed to move the stem main body 21 and the piston guide 24 downward, the plug portion 51 of the piston guide 24 is separated downward from the inner cylinder of the piston 22. As a result, the inside of the cylinder 23 and the inside of the stem main body 21 communicate with each other, and the lower end portion of the stem main body 21 comes into contact with the connecting portion of the piston 22.

When the stem main body 21 and the piston guide 24 are further moved downward, the piston 22 moves downward together with the stem main body 21 and the piston guide 24. As a result, the contents in the cylinder 23 flow into the stem main body 21 through the proximity projections 51a adjacent to each other in the circumferential direction in the piston guide 24 while the piston 22 is separated downward from the introduction hole 33a. As a result, the contents in the stem main body 21 pass through the discharge cylinder 113 of the discharge head 101 and are discharged from the discharge port 113a.

Next, when the pressing of the discharge head 101 is released, the discharge head 101 is pushed up by the upward urging force of the urging member 28. As a result, the stem body 21, the piston guide 24, and the piston 22 are restored and moved upward together with the discharge head 101. As the stem body 21 and the like move upward, the contents in the container body 11 flow into the cylinder 23 again through the suction cylinder 41 as described above.

In the discharger 12 having the above configuration, for example, at the time of distribution, the discharge head 101 and the stem 20 are located at the descending end position P1 whose elevation is restricted by the regulating member 27. Here, the conventional discharger has a configuration in which the valve body is seated on the valve seat in a state of being connected to the fitting cylinder via the elastically deformable connecting piece, but above the valve body. No member was provided to regulate movement. Therefore, there is a risk that the contents may enter the cylinder through a minute gap between the valve body and the valve seat and come into contact with the urging member made of metal or the like due to vibration during distribution or the posture of lying down. was there. In particular, when the urging member is a metal member such as a coil spring, when the content penetrates into the cylinder through the lower end opening of the cylinder and a part of the urging member is immersed in the content. Depending on the content, rust may occur on the portion of the urging member located on the liquid surface of the content, that is, the interface portion between the content and air. Further, when the urging member is a resin member, a crack may occur or the urging member in the compressed state may be cracked depending on the contents, for example, when the urging member is stored (inventory) for a long period of time. Problems such as a decrease in power may occur.

To solve this problem, in the discharger 12 of the present embodiment, the valve is located between the stem 20 (piston guide 24) and the valve body 47, and is integrally formed with the valve body 47 on the upper surface of the valve body 47. Since the main body restricting member 48 is provided, at the descending end position P1 shown in FIG. 1, the upper end of the valve main body regulating member 48 is the lower end of the stem 20, specifically, the top wall of the plug portion 51 of the piston guide 24. It abuts on the lower surface of the part. As a result, at the descending end position P1, the upward movement of the valve body 47 is always restricted by the valve body regulating member 48. Therefore, for example, even if there is vibration or a sideways posture during distribution, it is restricted that the valve body 47 moves upward to form a path for the contents to enter the cylinder 23. In this way, it is possible to realize a discharger 12 capable of suppressing the contents from entering the cylinder 23 and contacting the urging member 28 at the time of distribution or the like.

Further, according to the configuration of the present embodiment, since the valve body regulating member 48 integrally formed with the valve body 47 is provided, the above effect can be obtained by changing the design of the lower valve body 25 including the valve body 47. Obtainable.

[Second Embodiment]
Hereinafter, the second embodiment of the present invention will be described with reference to FIGS. 3 and 4.
The basic configuration of the discharger of the second embodiment is the same as that of the first embodiment, and only the configuration of the valve body restricting member is different from that of the first embodiment. Therefore, in the present embodiment, the description of the basic configuration will be omitted.
3 and 4 are cross-sectional views showing the ejector of the second embodiment, FIG. 3 shows a state in which the ejector is in the descending end position, and FIG. 4 shows a state in which the ejector is in the ascending end position.
In FIGS. 3 and 4, the same components as those in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 3 and 4, in the discharger 17 of the present embodiment, the valve body restricting member 54 is a piston on the lower surface of the stem 55, specifically, on the lower surface of the top wall portion of the plug portion 57 of the piston guide 56. It is composed of a rod-shaped member integrally formed with the guide 56. That is, the valve body restricting member 54 extends downward along the axis O from the lower surface of the piston guide 56. The valve body regulating member 54 is provided between the stem 55 (piston guide 56) and the valve body 59 inside the lower regulating cylinder 46 of the lower valve body 58, and is provided at the lower end position P1 of the discharge head 101 and the stem 20. , Restricts the upward movement of the valve body 59.

That is, in the first embodiment, the valve body regulating member 48 is integrally formed with the lower valve body 25 (valve body 47), whereas in the second embodiment, the valve body regulating member 54 is the stem 55 (piston). It is integrally formed with the guide 56).
Other configurations of the discharger 17 are the same as those of the discharger 12 of the first embodiment.

In the discharger 17 of the present embodiment, at the lower end position P1 of the discharge head 101 and the stem 20 shown in FIG. 3, the lower end of the valve body restricting member 54 provided at the lower end of the stem 55 hits the upper surface of the valve body 59. Contact. As a result, at the descending end position P1, the upward movement of the valve body 59 is always restricted by the valve body regulating member 54. Therefore, for example, even if there is vibration or a sideways posture during distribution, a discharger 17 capable of suppressing the contents from entering the cylinder 23 and suppressing contact with the urging member 28 is realized. The same effect as that of the first embodiment can be obtained.

Further, according to the configuration of the present embodiment, since the valve body restricting member 54 integrally formed with the stem 55 (piston guide 56) is provided, the above design change of the stem 55 (piston guide 56) causes the above-mentioned. The effect can be obtained.

The technical scope of the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention.
For example, in the first embodiment, all of the valve body regulating member 48 is integrally formed with the valve body 47, and in the second embodiment, all of the valve body regulating member 54 is integrally formed with the stem 55. Instead, for example, the valve body regulating member is divided into two at the top and bottom, a part on the upper side of the valve body regulating member is formed integrally with the stem, and a part on the lower side is formed integrally with the valve body. It may have a different configuration. In this case, the lower end of a part of the valve body regulating member formed integrally with the stem and the upper end of the other part of the valve body regulating member formed integrally with the valve body come into contact with each other to cause the valve body. The upward movement of is restricted.

Further, in the first embodiment, the valve body regulating member 48 has a configuration in which the valve body regulating member 48 abuts on the stem 20, and in the second embodiment, the valve body regulating member 54 has a configuration in which the valve body regulating member 54 abuts on the valve body 59. .. On the other hand, depending on the properties of the contents (for example, viscosity and permeability), the valve body regulating member and the stem, or the valve body regulating member and the valve body may not be brought into contact with each other, and a slight gap may be formed between them. You can also do it. Further, the valve body restricting member may be formed so as to restrict the movement of the valve body so that the contents do not enter.

Further, in the above embodiment, the stem main body 21 and the piston guides 24 and 56 are configured as separate bodies, but these may be integrally configured. Further, in the above embodiment, the regulating member 27 is fixed to the upper end of the cylinder 23, but it does not necessarily have to be the upper end, and may be the upper end. Further, although the regulating member 27 is formed separately from the cylinder 23, the regulating member 27 may be integrally formed with the cylinder 23 instead of this configuration. Further, the shape of the regulating member 27 does not necessarily have to be ring-shaped, and can be changed as appropriate.

In addition, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

11 Container body 11a Mouth 20, 55 Stem 22 Piston 23 Cylinder 27 Regulator 28 Bouncer 47, 59 Valve body 48, 54 Valve body regulator 100 Mounting cap 101 Discharge head P1 Down end position

Claims (3)

A stem that is placed inside the mouth of the container body so that it can move downward in an upwardly urged state,
A cylindrical cylinder into which the stem is inserted and a mounting cap to be mounted on the mouth are attached.
A piston that is linked to the vertical movement of the stem in the cylinder and is slidably fitted to the inner peripheral surface of the cylinder.
A discharge head fixed to the upper end of the stem and having a discharge port for discharging the contents,
An urging member disposed in the cylinder and urging the stem upward.
A valve body disposed in the lower end opening of the cylinder, which closes the lower end opening when pressurization in the cylinder and opens the lower end opening when depressurization in the cylinder.
A regulatory member provided on the upper part of the cylinder with the stem inserted to regulate the rise of the discharge head and the stem at the descending end position of the discharge head and the stem.
Equipped with
A discharger provided with a valve body restricting member that regulates the upward movement of the valve body at the descending end position between the stem and the valve body. At least a part of the valve body regulating member is formed integrally with the valve body on the upper surface of the valve body.
At the descending end position, the upper end of the valve body restricting member comes into contact with the stem or another part of the valve body regulating member provided on the stem, whereby the upward movement of the valve body is restricted. , The discharger according to claim 1. At least a part of the valve body restricting member is formed integrally with the stem at the lower end of the stem.
At the descending end position, the lower end of the valve body restricting member abuts on the valve body or another part of the valve body regulating member provided on the valve body, thereby restricting the upward movement of the valve body. The ejector according to claim 1 or 2.

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