JP2019177939A - Pump mechanism and discharger - Google Patents

Abstract

To provide a pump mechanism that can be modularized to rapidly respond to a customer's request and the like, and a discharger.SOLUTION: A pump mechanism 14 according to the present invention comprises a stem 21, a piston 22, a cylinder 23, a piston guide 24, and a lower valve body 25. A regulation part 90 for regulating upward movement of the stem 21 is arranged at an upper end of the cylinder 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pump mechanism and a discharger.

  A discharge container that discharges the contents in the container body is configured by mounting a discharge device on the mouth of the container body. The discharger includes a pump mechanism including a cylinder, a stem, a piston, and the like, a mounting cap, and a pressing head (see, for example, Patent Document 1 below).

The mounting cap is attached to the cylinder. The discharger (pump mechanism) is attached to the mouth of the container body via the attachment cap.
The pressing head is attached to the upper end of the stem. The stem moves downward in an upward biased state by a pressing operation via the pressing head. Thereby, the inside of a cylinder is pressurized via a piston, and the contents are discharged through a stem and a pressing head.

Japanese Patent Laying-Open No. 2015-85972

  By the way, in order to store the discharger, it is necessary to keep the pump mechanism and the exterior member assembled or in a state where all of them are separated.

For example, in order to quickly respond to short delivery times or large orders from customers, it is desirable to store the dispenser with the pump mechanism and the exterior member assembled. However, when the dispenser is stored in a state where the pump mechanism and the exterior member are assembled, there is a possibility that the storage place may be compressed.
Further, among the dischargers, there is a demand for exterior members such as a mounting cap and a pressing head to be changed in appearance shape or colored in accordance with the specification (for example, design) of the discharge container. However, when the dispenser is stored in a state where the pump mechanism and the exterior member are assembled, it has been difficult to quickly respond to the above-described demand.
On the other hand, when the dispenser is stored in a disassembled state, for example, the dispenser is assembled after receiving an order from the customer, so that it is difficult to meet the demand for short delivery time or mass order.

  An object of the present invention is to provide a pump mechanism and a discharger that can modularize a pump mechanism and can quickly respond to, for example, a customer's request.

In order to solve the above problems, the present invention proposes the following means.
The dispenser according to the present invention is configured to be movable downward in an upward biased state, and a stem to which a pressing head for discharging contents can be attached, a piston linked to the vertical movement of the stem, and a container body A mounting cap mounted on the mouth portion is configured to be mountable, and a cylindrical cylinder in which the piston is slidably fitted, and a piston that is inserted inside the piston and linked to the vertical movement of the stem A guide and a lower valve body that opens and closes a lower end opening of the cylinder are provided, and a restricting portion that restricts upward movement of the stem is disposed at the upper end of the cylinder.

According to this configuration, by arranging the restricting portion in the cylinder in advance, it is possible to prevent the stem from coming off from the cylinder even before the mounting member such as the mounting cap and the pressing head is assembled. it can. That is, since the pump mechanism of the discharger can be modularized, the pump mechanism can be stored in a state before the exterior member is assembled. Therefore, the storage location can be reduced as compared with the case where the pump mechanism and the exterior member are stored together.
In addition, when there is a request for changing the specification of the discharge container or coloring the exterior member, it is possible to promptly provide a discharger according to the request simply by assembling the exterior member according to the request to the pump mechanism. Therefore, since the stored pump mechanism can be used as it is, it is possible to suppress waste loss and the like.
And in the structure which concerns on this invention, various pumps can be easily formed by using the exterior member which changed the shape, decoration, decoration, etc. by using the modularized pump mechanism as a common part. . Further, in forming various dischargers, the modularized pump mechanism of the present invention can be used as a common part, so that the manufacturing process can be made more efficient.
Furthermore, since the pump mechanism is stored in an assembled state, for example, even when a short delivery time or a large order is entered, it is possible to respond quickly.

In the dispenser according to the present invention, the cylinder includes a flange portion to which the mounting cap is engaged, and a protruding cylinder projecting upward from the flange portion, and the protruding cylinder includes the stem. An engagement cylinder that restricts the upward movement of the stem may be attached by engaging the pressing head at the lower end position.
According to this configuration, the engagement cylinder and the pressing head can be assembled in advance when the exterior member is assembled to the pump mechanism. Thus, unlike the case where the pressing head is assembled to the engaging cylinder after the pressing head is assembled to the stem, the engaging cylinder and the pressing head are assembled without applying an upward biasing force to the pressing head via the stem. Can do. Therefore, the assembly efficiency can be improved.
Further, the engaging cylinder is an exterior member that is exposed to the outside when the stem is at least at the raised end position. Therefore, by attaching the engagement cylinder to the pump mechanism, the engagement cylinder can be changed in accordance with the change of the pressing head and the mounting cap according to the specification of the discharge container.

In the dispenser according to the present invention, the restricting portion may include an engaging portion that restricts the upward movement of the stem by engaging the pressing head at a descending end position of the stem.
According to this structure, since the engaging part is formed in the control part of the pump mechanism, the exterior member can be simplified.

The discharge device according to the present invention includes the pump mechanism according to the present invention, the pressing head attached to the upper end portion of the stem, and the mounting cap attached to the cylinder.
According to this configuration, since the pump mechanism according to the present invention is provided, a low-cost dispenser can be provided.

  According to the present invention, the pump mechanism can be modularized to quickly respond to, for example, customer requests.

In the discharge container which concerns on 1st Embodiment, it is a fragmentary sectional view which shows the state which has a stem in a falling end position. In the discharge container which concerns on 1st Embodiment, it is a fragmentary sectional view which shows the state which has a stem in a falling end position. It is an exploded sectional view of the discharger concerning a 1st embodiment. It is a fragmentary sectional view of the modularized pump mechanism concerning a 1st embodiment. In the discharge container which concerns on 2nd Embodiment, it is a fragmentary sectional view which shows the state which has a stem in a fall end position. It is a fragmentary sectional view of the modularized pump mechanism concerning a 2nd embodiment. It is an exploded sectional view of a discharger concerning a 2nd embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the following description, a discharge container in which the discharge device according to the present invention is attached to the container body will be described.
(First embodiment)
A discharge container 1 shown in FIGS. 1 and 2 includes a bottomed cylindrical container body 11 and a discharger 12 that is detachably attached to a mouth portion 11a of the container body 11.
The container body 11 is configured to be able to accommodate contents. The contents are liquids such as shampoos, body soaps, and cosmetics.

  The discharger 12 includes a pump mechanism 14 and an exterior member 15 attached to the pump mechanism 14. As shown in FIGS. 1 to 3, the pump mechanism 14 includes a stem 21, a piston 22, a cylinder 23, a piston guide 24, a lower valve body 25, a closed cylinder 26, and the like. Of the pump mechanism 14, at least the stem 21, the piston 22, the cylinder 23, and the closing cylinder 26 are coaxially disposed on a common axis. Hereinafter, the common axis is referred to as an axis O. Of the axis O direction, the direction from the bottom of the container body 11 toward the discharger 12 is defined as the upper side, and the direction from the discharger 12 toward the bottom of the container body 11 is defined as the lower side. Further, in a plan view viewed from the direction of the axis O, a direction intersecting the axis O is referred to as a radial direction, and a direction around the axis O is referred to as a circumferential direction.

The cylinder 23 is formed in a multi-stage cylindrical shape whose outer diameter increases as it is located at the upper side. Specifically, in the cylinder 23, an attachment cylinder 31, a storage cylinder 32, a sliding cylinder 33, and a protruding cylinder 34 are continuous from below to above.
A suction cylinder 41 that is separate from the pump mechanism 14 is fitted to the mounting cylinder 31. The suction cylinder 41 is extended to a position where the lower end opening is close to the bottom of the container body 11. In addition, by preparing the suction cylinder 41 separately from the pump mechanism 14, the optimum suction cylinder 41 can be attached to the pump mechanism 14 according to the specifications (size and type) of the container body 11.
A lower valve body 25 is housed in the housing cylinder 32.

  An introduction hole 33 a that penetrates the sliding cylinder 33 in the radial direction is formed in the upper part of the sliding cylinder 33. A flange portion 42 projects from the upper opening edge of the sliding cylinder 33 toward the outside in the radial direction. The flange portion 42 is formed over the entire circumference of the sliding cylinder 33. The flange portion 42 is disposed on the upper end opening edge of the mouth portion 11a with the packing 44 interposed therebetween in a state where the discharger 12 is mounted on the container body 11.

  The protruding cylinder 34 extends upward from the flange portion 42. Engaging protrusions are formed on the outer peripheral surface of the protruding cylinder 34.

The lower valve body 25 includes a fitting cylinder 45, a lower restricting portion 46, and a valve main body 47.
The fitting cylinder 45 is formed in a top cylinder shape. The peripheral wall portion of the fitting cylinder 45 is fitted to the lower part of the housing cylinder 32.
The lower restricting portion 46 protrudes upward from the top wall portion of the fitting tube 45 in the housing tube 32. The lower restricting portion 46 includes a pair of side plates opposed in the radial direction with the axis O in between, a middle plate that connects the side plates, and a top plate that is integrally connected to the upper ends of the side plate and the middle plate. . In a plan view, the pair of side plates and the middle plate have an H shape as a whole. The top plate has a circular shape that circumscribes the pair of side plates. The lengths in the direction of the axis O of each of the pair of side plates and the middle plate are equal to each other. The positions of the pair of side plates and the middle plate in the direction of the axis O are equal to each other.

  The valve body 47 is connected to the inner peripheral surface of the fitting cylinder 45 (peripheral wall portion) via a connecting piece that can be elastically deformed. That is, the valve body 47 is configured to be elastically displaceable in the direction of the axis O with respect to the fitting cylinder 45 in accordance with the elastic deformation of the connecting piece. The valve main body 47 is configured to be able to contact and separate from above the lower end opening edge of the storage cylinder 32 in the storage cylinder 32.

  The lower valve body 25 (valve main body 47) is a check valve that closes the lower end opening of the cylinder 23 while the cylinder 23 is pressurized and opens the lower end opening of the cylinder 23 when the pressure in the cylinder 23 is reduced. The lower valve body 25 prevents the contents in the cylinder 23 from returning to the container body 11 through the lower end opening of the housing cylinder 32 when the pressure in the cylinder 23 is increased. On the other hand, when the pressure in the cylinder 23 is reduced, the contents in the container main body 11 flow into the cylinder 23 through the lower end opening of the housing cylinder 32.

  The piston guide 24 is configured to move up and down with the stem 21 in the cylinder 23. Specifically, the piston guide 24 includes a plug part 51 and a mounting part 52 extending above the plug part 51.

  The plug part 51 is formed in a top cylinder shape. The plug portion 51 switches between communication and blocking between the housing cylinder 32 and the sliding cylinder 33 with the vertical movement. Specifically, at the lower end position of the stem 21 shown in FIG. 1, the lower portion of the plug portion 51 (peripheral wall portion) is fitted in the housing cylinder 32. As a result, communication between the housing cylinder 32 and the sliding cylinder 33 is blocked in the direction of the axis O. On the other hand, at the rising end position of the stem 21 illustrated in FIG. Thereby, the inside of the accommodation cylinder 32 and the inside of the sliding cylinder 33 communicate.

Proximity protrusions 51 a 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 radially outer end surface of the proximity protrusion 51 a is located on the radially outer side with respect to the inner peripheral surface of the housing cylinder 32, and is positioned on the radially inner side with respect to the inner peripheral surface of the sliding cylinder 33. The proximity protrusion 51a approaches or contacts the upper end opening edge of the storage cylinder 32 from above the storage cylinder 32 in a state where the stem 21 is positioned at the lower end position.
A biasing member 55 is interposed between the top wall portion of the plug portion 51 and the top wall portion of the fitting tube 45 described above. The urging member 55 urges the piston guide 24 upward while surrounding the lower restricting portion 46 of the lower valve body 25.

  The mounting portion 52 includes a plurality of divided peripheral walls arranged at intervals in the circumferential direction, and ribs that protrude separately from the central portion of the plurality of divided peripheral walls toward the inside in the radial direction. . The outer peripheral surface of the divided peripheral wall is located on the radially inner side with respect to the peripheral wall portion of the plug portion 51. The radially inner ends of the ribs are connected to each other on the axis O. The rib is disposed over the entire region in the direction of the axis O in the divided peripheral wall. The mounting portion 52 communicates between the inside and outside of the divided peripheral wall through the space between the adjacent divided peripheral walls in the circumferential direction. In addition, the structure which has a through-hole which penetrates a cylinder part to radial direction in the cylinder part extended continuously over the perimeter of the circumferential direction may be sufficient as the mounting part 52.

The stem 21 is configured to be movable downward in the upward biased state via the above-described piston guide 24. The stem 21 includes a lower cylinder part 61 and an upper cylinder part 62 formed with a smaller diameter than the lower cylinder part 61.
The lower cylinder portion 61 surrounds the periphery of the mounting portion 52. A gap is formed between the inner peripheral surface of the lower cylindrical portion 61 and the outer peripheral surface of the mounting portion 52 (divided peripheral wall) over the entire circumferential direction. A stepped portion 63 is formed at the upper end opening edge of the lower cylindrical portion 61 toward the inside in the radial direction. In the illustrated example, the stepped portion 63 is formed in a tapered shape extending toward the inside in the radial direction as it goes upward. However, the stepped portion 63 may protrude in a direction orthogonal to the axis O.

  The upper cylinder portion 62 extends upward from the radially inner end portion of the step portion 63. The lower part of the upper cylinder part 62 is externally fitted to the mounting part 52 (divided peripheral wall). In the upper cylinder portion 62, a restricting projection 65 projects from the center in the axis O direction toward the inside in the radial direction. The restricting protrusion 65 is in contact with the upper end edge of the mounting portion 52 (divided peripheral wall) from above the mounting portion 52. Thereby, the upward movement of the piston guide 24 with respect to the stem 21 is restricted, and the urging force of the urging member 55 is transmitted to the stem 21 via the piston guide 24.

The piston 22 includes an outer cylinder 71, an inner cylinder 72, and a connecting portion 73 that connects the outer cylinder 71 and the inner cylinder 72.
The outer cylinder 71 has an outer diameter that increases from the center in the direction of the axis O toward both sides. The outer cylinder 71 is configured such that both end portions in the axis O direction are slidable on the inner peripheral surface of the sliding cylinder 33 of the cylinder 23 in the axis O direction.

The inner cylinder 72 is fitted in the above-described lower cylinder portion 61 of the stem 21 so as to be slidable in the direction of the axis O.
The connecting portion 73 connects intermediate portions of the outer cylinder 71 and the inner cylinder 72 in the direction of the axis O along the entire circumference in the circumferential direction below the stem 21.

  As shown in FIG. 2, the piston 22 closes the introduction hole 33 a described above by the outer cylinder 71 at the rising end position of the stem 21. Specifically, both end portions in the axis O direction of the outer cylinder 71 are in close contact with portions located on both sides in the axis O direction with respect to the introduction holes 33 a in the inner peripheral surface of the sliding cylinder 33, so that the introduction holes 33 a are formed. Blocked.

The closing cylinder 26 is interposed between the stem 21 (upper cylinder portion 62) and the cylinder 23 (sliding cylinder 33). Specifically, the closing cylinder 26 includes a base cylinder part 77 and a lower seal part 78.
The base cylinder part 77 surrounds the upper part of the upper cylinder part 62 over the entire circumference. Communication between the inner peripheral surface of the base tube portion 77 and the outer peripheral surface of the upper tube portion 62 through the space between the outer peripheral surface of the upper tube portion 62 and the inner peripheral surface of the base tube portion 77. A passage 79 is defined. The upper end opening edge of the base cylinder portion 77 is disposed flush with the upper end opening edge of the stem 21 at the lower end position of the stem 21 shown in FIG.

  A connecting cylinder 80 is connected to the lower end of the base cylinder part 77. The connecting cylinder 80 is expanded in diameter relative to the base cylinder portion 77. In the connecting cylinder 80, the stepped portion 63 of the stem 21 approaches or abuts from below the connecting cylinder 80 at the rising end position of the stem 21 shown in FIG. 2.

  The outer diameter of the lower seal portion 78 increases from the center portion in the direction of the axis O toward both sides. Both ends of the lower seal portion 78 in the direction of the axis O are fitted to the upper inner peripheral surface of the sliding cylinder 33 so as to be slidable in the direction of the axis O. The lower seal portion 78 closes the introduction hole 33a at the lower end position of the stem 21 shown in FIG. Specifically, both end portions of the lower seal portion 78 in the direction of the axis O are in close contact with portions on both sides in the direction of the axis O with respect to the introduction holes 33a on the inner peripheral surface of the sliding cylinder 33, thereby introducing the introduction holes 33a. Is blocked. On the other hand, the lower end portion of the lower seal portion 78 is in contact with the upper end portion of the outer cylinder 71 described above at the rising end position of the stem 21 shown in FIG.

  Here, a regulating portion 90 is fitted into the upper end opening of the cylinder 23 from above the cylinder 23. The restricting portion 90 is formed in a ring shape coaxial with the axis O. The outer peripheral surface of the base tube portion 77 slides on the inner peripheral surface of the restricting portion 90 as the closed tube 26 moves in the axis O direction. The lower seal portion 78 described above approaches or contacts the restriction portion 90 from below the restriction portion 90 at the rising end position of the stem 21. That is, the restricting portion 90 restricts the upward movement of the stem 21 relative to the cylinder 23 via the closed cylinder 26. The restricting portion 90 may be linked to a member other than the closed cylinder 26 (for example, the stem 21) as long as it restricts the upward movement of the stem 21. Further, the restriction portion 90 may be configured to be fitted around the cylinder 23.

  The exterior member 15 includes a mounting cap 81, an engagement cylinder 82, and a pressing head 83. The exterior member 15 is a portion exposed to the outside of the discharger 12 in a state where the discharger 12 is mounted on the container main body 11.

  The mounting cap 81 is formed in a top cylinder shape. The top wall 85 of the mounting cap 81 is formed with an insertion hole 85a that penetrates the top wall 85 in the direction of the axis O. The protruding cylinder 34, the stem 21 (upper cylinder part 62), and the base cylinder part 77 are inserted into the insertion hole 85 a from below the top wall part 85. The lower surface of the top wall portion 85 is in contact (engagement) with the upper surface of the flange portion 42. The mounting cap 81 may be configured to be attached to the cylinder 23 (flange portion 42) by a method other than engagement, such as fitting.

  The peripheral wall portion 86 of the mounting cap 81 extends downward from the outer peripheral edge of the top wall portion 85. That is, the mounting cap 81 surrounds the flange portion 42 from above and from the outside in the radial direction. On the inner peripheral surface of the peripheral wall portion 86, a female screw portion that is screwed into the mouth portion 11a is formed. That is, the pump mechanism 14 is detachably mounted on the container body 11 via the mounting cap 81. The mounting cap 81 may be mounted on the mouth portion 11a by a method other than screwing, such as undercut fitting.

The engagement cylinder 82 includes a male screw cylinder 91, a connecting ring 92, an external fitting cylinder 93, and an exterior cylinder 94.
The lower part of the male screw cylinder 91 is inserted into the cylinder 23. The lower end portion of the male screw cylinder 91 is close to or in contact with the restriction portion 90 described above from above the restriction portion 90. Note that a rotation preventing portion that engages with each other and restricts the relative rotation of the engagement cylinder 82 with respect to the cylinder 23 is formed on the lower outer peripheral surface of the male screw cylinder 91 and the inner peripheral surface of the protruding cylinder 34.

  A male screw portion is formed on the upper portion of the male screw cylinder 91 (portion protruding upward from the cylinder 23). A groove portion 95 is formed on the inner peripheral surface of the male screw cylinder 91 and the inner peripheral surface of the restricting portion 90. The groove part 95 is formed across the male screw cylinder 91 and the restricting part 90 in the axis O direction. The groove 95 has a lower end that opens on the lower end opening edge of the restricting portion 90, and an upper end that terminates at the upper end of the male screw cylinder 91.

The connecting ring 92 protrudes radially outward from an intermediate portion of the male screw cylinder 91 in the axis O direction. The inner peripheral portion of the connecting ring 92 is in proximity to or in contact with the upper end opening edge of the protruding cylinder 34 from above the protruding cylinder 34.
The outer fitting cylinder 93 extends downward from a portion of the connecting ring 92 located on the outer side in the radial direction from the protruding cylinder 34. The external fitting cylinder 93 is externally fitted to the protruding cylinder 34 by a stopper or the like. That is, the external fitting cylinder 93 surrounds the protruding cylinder 34 from the outside in the radial direction.

  The outer cylinder 94 extends downward from the outer peripheral edge of the connecting ring 92. The lower end opening edge of the outer casing 94 is close to the top wall 85 from above the top wall 85. The outer cylinder 94 restricts the upward movement of the mounting cap 81 with respect to the pump mechanism 14.

The pressing head 83 includes an operation unit 96, a fitting cylinder 97, a female screw cylinder 98, and a discharge cylinder 99.
The operation part 96 is formed in a top cylinder shape.
The fitting cylinder 97 extends downward from the top plate portion of the operation unit 96. The lower part of the fitting cylinder 97 is fitted in the stem 21 (upper cylinder part 62). On the upper part of the fitting cylinder 97, an engaging protrusion 97a is provided protruding outward in the radial direction. The engagement protrusion 97a extends in the direction of the axis O. The lower end edge of the engagement protrusion 97 a is in proximity to or in contact with the upper end opening edge of the upper cylinder part 62 from above the upper cylinder part 62.

  The female screw cylinder 98 extends downward from a portion located on the outer side in the radial direction from the fitting cylinder 97 in the top plate portion of the operation portion 96. A female screw portion is formed on the inner peripheral surface of the female screw cylinder 98. The female screw tube 98 is screwed to the male screw tube 91 described above at the lower end position of the stem 21 shown in FIG. The lower end opening edge of the male screw cylinder 98 is located below the engaging protrusion 97a and the peripheral wall portion of the operation portion 96. Therefore, the contact portion between the engagement protrusion 97 a and the stem 21 is covered from the outside in the radial direction by the female screw cylinder 98.

  The discharge cylinder 99 penetrates the peripheral wall portion of the operation portion 96 and the female screw cylinder 98 in the radial direction and communicates with the fitting cylinder 97. The radially outer opening in the discharge cylinder 99 constitutes a discharge hole 99a for discharging the contents to the outside.

Next, a method for discharging contents by the above-described discharge container 1 will be described.
First, the pressing head 83 positioned at the lower end position is rotated about the axis O with respect to the engaging cylinder 82, thereby screwing the female screw cylinder 98 of the pressing head 83 and the male screw cylinder 91 of the engaging cylinder 82. Remove clothes. At this time, the pressing head 83, the stem 21, and the piston guide 24 are lifted with respect to the cylinder 23, and the plug portion 51 of the piston guide 24 is detached from the housing cylinder 32 of the cylinder 23, and inside the housing cylinder 32 and the sliding cylinder 33. And communicate. Then, the piston guide 24, the stem 21, and the pressing head 83 are integrally raised by the upward biasing force of the biasing member 55. In this process, the top wall portion of the plug portion 51 is engaged with the lower end portion of the inner cylinder 72 of the piston 22, so that the piston 22 rises together with the piston guide 24.

  As a result, the inside of the cylinder 23 is depressurized, so that the lower valve body 25 opens the lower end opening of the cylinder 23, and the content in the container body 11 flows into the cylinder 23 through the suction cylinder 41. Further, as shown in FIG. 2, the upper end opening edge of the outer cylinder 71 of the piston 22 is engaged with the lower end edge of the lower seal portion 78 in the closing cylinder 26, thereby raising the closing cylinder 26. As a result, the closing cylinder 26 is separated upward from the introduction hole 33a, while the outer cylinder 71 closes the introduction hole 33a.

When the pressing head 83 is pressed and the stem 21 and the piston guide 24 are moved downward, first, the plug portion 51 of the piston guide 24 is separated downward from the inner cylinder 72 of the piston 22. As a result, the inside of the cylinder 23 and the inside of the stem 21 communicate with each other, and the lower end portion of the stem 21 contacts the connecting portion 73 of the piston 22.
When the stem 21 and the piston guide 24 are further moved downward, the piston 22 is also moved downward together with the stem 21 and the piston guide 24. Accordingly, the contents in the cylinder 23 flow into the stem 21 through the adjacent protrusions 51a adjacent to each other in the circumferential direction of the piston guide 24 while the piston 22 is spaced downward from the introduction hole 33a. As a result, the contents in the stem 21 pass through the discharge cylinder 99 of the pressing head 83 and are discharged from the discharge hole 99a.

  Next, when the pressing of the pressing head 83 is released, the piston guide 24, the piston 22, the stem 21, and the pressing head 83 are restored and moved upward by the upward biasing force of the biasing member 55. As the piston guide 24 and the like move upward, the contents in the container body 11 flow into the cylinder 23 through the suction cylinder 41 as described above.

Next, a method for assembling the discharger 12 will be described.
The discharger 12 of this embodiment includes a pump assembly process for assembling the pump mechanism 14 and an exterior member assembly process for assembling the exterior member 15 to the pump mechanism 14. The pump assembly process may be performed continuously regardless of whether there is an order from a customer, for example. The exterior member assembling step may be performed according to an order received from a customer, for example.

  As shown in FIG. 4, in the pump assembly process, the lower valve body 25, the urging member 55, the piston guide 24, the piston 22, the stem 21 and the closing cylinder 26 are sequentially inserted through the upper end opening of the cylinder 23. Thereafter, the restricting portion 90 is fitted into the cylinder 23. By disposing the restricting portion 90 between the outer peripheral surface of the base tube portion 77 and the inner peripheral surface of the sliding tube 33, the upward movement of the stem 21 relative to the cylinder 23 is restricted. That is, in the pump mechanism 14 of the present embodiment, even when the exterior member 15 is not assembled, the stem 21 and the like from the cylinder 23 are prevented from coming off.

  In the exterior member assembly process, the mounting cap 81, the engagement cylinder 82, and the pressing head 83 are assembled to the pump mechanism 14. In the present embodiment, the engaging cylinder 82 and the pressing head 83 are assembled prior to the exterior member assembling step. That is, the female screw cylinder 98 of the pressing head 83 is screwed onto the male screw cylinder 91 of the engagement cylinder 82. However, the mounting cap 81, the engagement cylinder 82, and the pressing head 83 may be sequentially assembled to the pump mechanism 14.

  In order to assemble the mounting cap 81 to the pump mechanism 14 (cylinder 23), the stem 21 or the like is inserted into the insertion hole 85a of the mounting cap 81 from below the mounting cap 81. At this time, the stem 21 or the like is inserted so that the flange portion 42 of the cylinder 23 abuts against the lower surface of the top wall portion 85. Thereby, the mounting cap 81 is attached to the cylinder 23.

Subsequently, the engagement cylinder 82 and the pressing head 83 are assembled to the pump mechanism 14. Specifically, the outer fitting cylinder 93 of the engagement cylinder 82 is fitted to the protruding cylinder 34 of the cylinder 23 and the fitting cylinder 97 of the pressing head 83 is fitted into the stem 21. As a result, the engaging cylinder 82 is attached to the cylinder 23 and the pressing head 83 is attached to the stem 21.
Thus, the dispenser 12 of this embodiment is completed.

As described above, in the present embodiment, the stem 21 to which the pressing head 83 can be attached and the cylinder 23 to which the mounting cap 81 can be attached are provided, and the restriction that restricts the upward movement of the stem 21 at the upper end opening of the cylinder 23. The portion 90 is provided.
According to this configuration, by disposing the restricting portion 90 in the cylinder 23 in advance, it is possible to suppress the stem 21 and the like from coming off from the cylinder 23 even in a state before the exterior member 15 is assembled. That is, since the pump mechanism 14 of the discharger 12 can be modularized, the pump mechanism 14 can be stored in a state before the exterior member 15 is assembled. Therefore, the storage location can be reduced as compared with the case where the pump mechanism 14 and the exterior member 15 are stored in an assembled state.
In addition, when there is a request for changing the specification of the discharge container 1 or coloring the exterior member 15, it is possible to quickly dispose the dispenser 12 according to the request simply by assembling the exterior member 15 according to the request to the pump mechanism 14. Can be provided. Therefore, since the stored pump mechanism 14 can be used as it is, disposal loss or the like can be suppressed.
And in this embodiment, the various pumps 12 can be easily formed by using the exterior member 15 which changed the shape, decoration, decoration, etc. by using the modularized pump mechanism 14 as a common part. it can. Moreover, since the modularized pump mechanism 14 of this embodiment can be used as a common part in forming the various dischargers 12, it is possible to improve the efficiency of the manufacturing process.
Furthermore, since the pump mechanism 14 is stored in an assembled state, for example, even when a short delivery date or a large order is entered, it is possible to respond quickly.

In the present embodiment, the engaging cylinder 82 that restricts the upward movement of the stem 21 by engaging the pressing head 83 at the lower end position of the stem 21 is configured to be attachable to the protruding cylinder 34 of the cylinder 23. Yes.
According to this configuration, when the exterior member 15 is assembled to the pump mechanism 14, the engagement cylinder 82 and the pressing head 83 can be assembled in advance. Thus, unlike the case where the pressing head 83 is assembled to the engaging cylinder 82 after the pressing head 83 is assembled to the stem 21, the upward biasing force via the stem 21 is not applied to the pressing head 83, and the engaging cylinder 82. And the pressing head 83 can be assembled. Therefore, the assembly efficiency can be improved.
The engaging cylinder 82 is the exterior member 15 exposed to the outside when the stem 21 is at least at the raised end position. Therefore, by attaching the engaging cylinder 82 to the pump mechanism 14, the engaging cylinder 82 can be changed according to the change of the pressing head 83 and the mounting cap 81 according to the specifications of the discharge container 1.

  Since the discharge device 12 of the present embodiment includes the pump mechanism 14 described above, the low-cost discharge device 12 can be provided.

(Second Embodiment)
Next, a second embodiment according to the present invention will be described. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
In the pump mechanism 14 shown in FIGS. 5 and 6, the restricting portion 100 includes a tube main body 101 and a flange portion 102.
The cylinder main body 101 is arranged coaxially with the axis O. The lower end portion of the cylinder main body 101 is fitted between the outer peripheral surface of the base cylinder portion 77 and the inner peripheral surface of the sliding cylinder 33 in the cylinder 23. The lower outer peripheral surface of the cylinder main body 101 and the inner peripheral surface of the protruding cylinder 34 are formed with rotation preventing portions that engage with each other and restrict relative rotation of the restriction portion 100 with respect to the cylinder 23.

  A male screw portion (engagement portion) is formed on the upper portion of the tube main body 101. In other words, the female screw cylinder 98 of the pressing head 83 can be screwed onto the upper portion of the cylinder main body 101 when the stem 21 is at the lower end position. A groove 105 is formed on the inner peripheral surface of the cylinder body 101. The groove part 105 extends in the axis O direction. The groove 105 has a lower end opened on the lower end opening edge of the cylinder main body 101 and an upper end terminated at the upper end of the cylinder main body 101.

  The flange portion 102 protrudes radially outward from an intermediate portion in the axis O direction of the tube main body 101. The flange portion 102 is in contact with the upper end opening edge of the protruding cylinder 34 from above the protruding cylinder 34. That is, the flange portion 102 restricts the downward movement of the restricting portion 100 with respect to the cylinder 23.

  The exterior member 110 includes a mounting cap 81, an exterior cylinder 111, and a pressing head 83.

The outer cylinder 111 includes an outer fitting cylinder 120 and an inner flange portion 121.
The external fitting cylinder 120 is externally fitted to the protruding cylinder 34 by a stopper or the like. That is, the external fitting cylinder 120 surrounds the protruding cylinder 34 from the outside in the radial direction.

  The inner flange portion 121 protrudes radially inward from the upper end edge of the outer fitting cylinder 120. The inner flange portion 121 is disposed on the flange portion 102. The inner flange portion 121 sandwiches the flange portion 102 described above in the direction of the axis O between the upper end opening edge of the protruding cylinder 34. As shown in FIG. 7, the lower opening edge of the outer cylinder 111 is a weakened portion 125 that can be broken to the inner peripheral edge (opening edge of the insertion hole 85 a) of the top wall 85 before assembly to the pump mechanism 14. It is connected through. That is, the mounting cap 81 and the outer cylinder 111 are integrated as a cap unit 130 before being assembled to the pump mechanism 14.

Next, a method for assembling the discharger 12 will be described.
In the present embodiment, in the pump assembling step, the restriction cylinder 100 is fitted into the cylinder 23 after inserting up to the closing cylinder 26 into the cylinder 23 as in the first embodiment. Thereby, the upward movement of the stem 21 with respect to the cylinder 23 is restricted.

  In the exterior member assembly process, the cap unit 130 and the pressing head 83 are sequentially assembled to the pump mechanism 14. In order to assemble the cap unit 130, the stem 21 or the like is inserted into the insertion hole 85 a of the mounting cap 81 from below the mounting cap 81. At this time, the stem 21 and the like are inserted until the flange portion 42 of the cylinder 23 abuts against the lower surface of the top wall portion 85. Then, before the top wall portion 85 abuts against the flange portion 42, the exterior cylinder 111 is assembled to the protruding cylinder 34. Specifically, the outer fitting cylinder 120 is fitted on the protruding cylinder 34, and the flange portion 102 is sandwiched between the inner flange 121 and the protruding cylinder 34 in the axis O direction. Thereby, the downward movement of the exterior cylinder 111 with respect to the pump mechanism 14 in the cap unit 130 is restricted.

  Thereafter, the cap unit 130 is further moved downward with respect to the pump mechanism 14. Then, the weakened portion 125 is broken, so that only the mounting cap 81 moves downward with respect to the pump mechanism 14 and the outer casing 111. As a result, the top wall portion 85 abuts against the flange portion 42. As a result, the outer cylinder 111 and the mounting cap 81 are attached to the cylinder 23, respectively.

  Subsequently, as in the first embodiment, the pressing head 83 is assembled to the stem 21 to complete the dispenser 12 of the present embodiment.

In the present embodiment, in addition to the same functions and effects as those of the first embodiment described above, the following functions and effects are achieved.
That is, since the male screw part is formed in the restriction part 100 of the pump mechanism 14, the exterior member 15 can be simplified. Therefore, for example, the mounting efficiency can be improved by, for example, integrating the mounting cap 81 and the outer cylinder 111 as the cap unit 130.

As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. Additions, omissions, substitutions, and other modifications can be made without departing from the spirit of the present invention. The present invention is not limited by the above description, but only by the appended claims.
In the embodiment described above, the mounting cap 81, the engagement cylinder 82, the pressing head 83, and the exterior cylinder 111 constitute the exterior member 15. However, the present invention is not limited to this configuration. The exterior member 15 only needs to have at least the mounting cap 81 and the pressing head 83.
The method of attaching the exterior member 15 to the pump mechanism 14 is not limited to fitting, and can be changed as appropriate.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the gist of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 11 ... Container main body 11a ... Port part 12 ... Discharge device 14 ... Pump mechanism 21 ... Stem 22 ... Piston 23 ... Cylinder 24 ... Piston guide 25 ... Lower valve body 34 ... Projection cylinder 42 ... Flange part 81 ... Mounting cap 82 ... Engagement Tube 83 ... Pressing head 90 ... Regulator 100 ... Regulator

Claims (4)

A stem that is configured to be movable downward in an upwardly biased state, and to which a pressing head for discharging the contents can be attached;
A piston linked to the vertical movement of the stem;
A mounting cap mounted on the mouth of the container body is configured to be attachable, and a cylindrical cylinder in which the piston is slidably fitted, and
A piston guide inserted inside the piston and linked to the vertical movement of the stem;
A lower valve body for opening and closing a lower end opening of the cylinder,
A pump mechanism in which an upper end portion of the cylinder is provided with a restriction portion for restricting upward movement of the stem. The cylinder is
A flange portion to which the mounting cap is engaged;
A protruding cylinder protruding above the flange portion, and
2. The pump mechanism according to claim 1, wherein an engagement cylinder that restricts the upward movement of the stem is attached to the protruding cylinder by engaging the pressing head at a lower end position of the stem.   The pump mechanism according to claim 1, wherein the restricting portion includes an engaging portion that restricts upward movement of the stem by engaging the pressing head at a lower end position of the stem. The pump mechanism according to any one of claims 1 to 3,
The pressing head attached to the upper end of the stem;
And a mounting cap attached to the cylinder.

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