Pump-type dispensing device and method for manufacturing a pump-type dispensing device
The modular design of the pump-type dispensing device simplifies assembly by eliminating screwing, allowing for easier and more efficient production of devices compatible with multiple container types.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- YOSHINO KOGYOSHO CO LTD
- Filing Date
- 2022-08-31
- Publication Date
- 2026-06-08
AI Technical Summary
Conventional pump-type dispensing devices require complex assembly processes, particularly the screwing of ring bodies onto push-down heads, which complicates their manufacture.
A modular design for the pump-type dispensing device comprising a pump module with a locking projection and annular flange, a head module with a push-down head and ring body attachment mechanism, and a mounting cap, allowing for easier assembly by eliminating the need for screwing the ring body onto the push-down head.
Facilitates easier and more efficient manufacturing of pump-type dispensing devices, enabling them to be produced with reduced complexity and increased versatility for various container types.
Smart Images
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Abstract
Description
Technical Field
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[0001] The present invention relates to a pump-type discharging tool to be attached to the mouth of a container and a method for manufacturing the pump-type discharging tool.
Background Art
[0002] As a discharge container for storing disinfectant alcohol, hand soap, etc. as contents, in order to facilitate the extraction of the contents, a pump having a cylinder, a stem, a piston, a piston guide, a spring, a check valve, etc. is provided at the mouth of the container, and a push-down head attached to the stem, a ring body for holding the push-down head at the position where the stem is pushed down during distribution, and a mounting cap for fixing the pump to the mouth of the container. A pump-type discharging tool equipped with the above is known to be used by attaching it to the mouth.
[0003] Conventionally, as a pump-type discharging tool used for such a discharge container, a commonly used pump is pre-assembled and provided with a regulating member for regulating the upward movement of the stem inside the upper end of the cylinder to be modularized, and push-down heads corresponding to multiple types of containers are each assembled with a ring body and modularized, and multiple types of mounting caps having shapes corresponding to multiple types of containers are manufactured, so that multiple types of pump-type discharging tools corresponding to various containers or contents can be easily manufactured. (For example, Patent Document 1).
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0006] This invention has been made in view of the above problems, and its purpose is to provide a pump-type dispensing device that can be manufactured more easily and a method for manufacturing a pump-type dispensing device. [Means for solving the problem]
[0007] The pump-type dispensing device of the present invention is a pump-type dispensing device used by being attached to the mouth of a container body, and comprises a pump module having a cylindrical outer shape with a locking projection on the outer circumferential surface of the upper end and an annular outward-facing flange integrally provided below the locking projection; a cylindrical stem that protrudes upward from the upper end of the cylinder and can be pushed down toward the inside of the cylinder; a piston that is mounted inside the cylinder so as to be vertically movable and moves downward together with the stem when the stem is pushed down, dispensing the contents inside the cylinder from the upper end of the stem; a spring disposed inside the cylinder that biases the stem and the piston upward; a regulating member mounted inside the upper end of the cylinder that restricts the upward movement of the stem; and a check valve that opens and closes the opening at the lower end of the cylinder; a connecting cylinder portion connected to the stem; a nozzle connected to the connecting cylinder portion; and an inward-facing protrusion on the inner circumferential surface. A head module comprising: a push-down head having a connecting cylinder portion having a section and being coaxially arranged on the outside of the connecting cylinder portion; an outer fitting cylinder having a locking projection on its inner circumferential surface; an outer casing cylinder coaxially arranged on the outside of the outer fitting cylinder; a ring body having a connected cylinder portion having an outward-facing protrusion on its outer circumferential surface, the connected cylinder portion being pushed into the inside of the connecting cylinder portion and the outward-facing protrusion engaging with the inward-facing protrusion, thereby attaching to the push-down head; a positioning portion that positions the push-down head and the ring body in the circumferential direction when attaching the ring body to the push-down head; a head module being attached to the pump module by pushing the outer fitting cylinder onto the upper end of the cylinder and engaging the locking projection with the locking projection; and a mounting cap having a mounting cylinder portion fitted to the opening and an inward-facing flange provided at the upper end of the mounting cylinder portion, the inward-facing flange being positioned between the outward-facing flange and the outer casing cylinder, thereby attaching to the pump module. Furthermore, a transition cylinder portion, which is prevented from rotating relative to the pressing head, is integrally provided at the upper end of the connected cylinder portion via a breakable weakening portion. It is characterized by the following.
[0009] In the pump-type dispensing device of the present invention, it is preferable that the transition cylinder portion has a notch in a part of its circumferential direction, and the nozzle is positioned in the notch portion to prevent it from rotating relative to the push-down head, and that the positioning portion is formed by the notch portion and the nozzle.
[0011] The present invention relates to a method for manufacturing a pump-type dispensing device, which is used by being attached to the mouth of a container body, and comprises the steps of manufacturing a pump module having a cylindrical outer shape with a locking projection on the outer circumferential surface of the upper end and an annular outward-facing flange integrally provided below the locking projection; a cylindrical stem that protrudes upward from the upper end of the cylinder and can be pushed down toward the inside of the cylinder; a piston that is mounted inside the cylinder so as to be vertically movable and moves downward together with the stem when the stem is pushed down, causing the contents inside the cylinder to be discharged from the upper end of the stem; a spring disposed inside the cylinder that biases the stem and the piston upward; a regulating member mounted inside the upper end of the cylinder that restricts the upward movement of the stem; and a check valve that opens and closes the opening at the lower end of the cylinder; and a connecting cylindrical portion connected to the stem; a nozzle connected to the connecting cylindrical portion; and an inward-facing protrusion on the inner circumferential surface. A step to manufacture a head module having: a push-down head having a connecting cylinder portion coaxially arranged outside the connecting cylinder portion having a locking projection on its inner circumferential surface; an outer fitting cylinder having a locking projection on its inner circumferential surface; an outer fitting cylinder coaxially arranged outside the outer fitting cylinder; a ring body having a connected cylinder portion having an outward projection on its outer circumferential surface, the connected cylinder portion being pushed into the inside of the connecting cylinder portion so that the outward projection engages with the inward projection, thereby attaching the head module and the ring body to the pump module; a step to manufacture a mounting cap having a mounting cylinder portion that is fitted to the opening and an inward flange provided at the upper end of the mounting cylinder portion; and a step to attach the head module and the mounting cap to the pump module by pushing the outer fitting cylinder to the upper end of the cylinder so that the locking projection engages with the locking projection, with the inward flange positioned between the outward flange and the outer fitting cylinder. Furthermore, the ring body used is one in which a transition cylinder portion, which prevents rotation relative to the pressing head, is integrally provided at the upper end of the connected cylinder portion via a breakable weakening portion. It is characterized by the following. [Effects of the Invention]
[0012] According to the present invention, it is possible to provide a pump-type dispensing device that can be manufactured more easily and a method for manufacturing a pump-type dispensing device. [Brief explanation of the drawing]
[0013] [Figure 1] This is a partially cutaway half-cross-sectional view of a discharge container equipped with a pump-type discharge device according to one embodiment of the present invention, viewed from the front. [Figure 2] Figure 1 is an exploded view of the pump-type dispensing device. [Figure 3] Figure 2 is an exploded view of the head module. [Figure 4] Figure 3 is a plan view of the ring-shaped body. [Figure 5] Figure 1 is a partially cutaway half-cross-sectional view of the discharge container shown, with the pump-type discharge device in a state where discharge operation is possible. [Figure 6] This is a partially cutaway half-cross-sectional view of a discharge container equipped with a pump-type discharge device according to a modified example, viewed from the front. [Figure 7] Figure 6 is a plan view of the push-down head. [Figure 8] This is a cross-sectional view along line AA in Figure 6. [Figure 9] Figure 6 is a partially cutaway half-cross-sectional view of the discharge container shown, with the pump-type discharge device in a state where discharge operation is possible. [Modes for carrying out the invention]
[0014] The following describes in detail, with reference to the drawings, a pump-type dispensing device and a method for manufacturing the pump-type dispensing device according to one embodiment of the present invention.
[0015] In the present specification and claims, the vertical direction shall mean the vertical direction in the upright posture of the pump-type discharge tool 1 shown in FIG. 1. Further, the radial direction shall mean the direction along a straight line passing through the central axis O and perpendicular to the central axis O. Furthermore, the side where the nozzle 33 is provided shall be the front (the left side in FIG. 1), the opposite side shall be the rear (the right side in FIG. 1), and the direction orthogonal to the vertical and front-rear directions (the direction perpendicular to the paper surface in FIG. 1) shall be the left-right direction.
[0016] As shown in FIG. 1, the pump-type discharge tool 1 according to the present embodiment is a so-called dispenser that is attached to and used at the mouth portion 2a of the container body 2. The discharge container 3 is constituted by the pump-type discharge tool 1 and the container body 2.
[0017] The container body 2 is, for example, a plastic bottle container, and for example, disinfecting alcohol, hand soap, etc. can be stored therein as the content 4. The pump-type discharge tool 1 can dispense the content 4 stored in the container body 2 in predetermined amounts and discharge it to the outside.
[0018] The pump-type discharge tool 1 is constituted by assembling a pre-assembled pump module 10, a pre-assembled head module: 30, and a mounting cap 50 shown in FIG. 2.
[0019] The pump module 10 has a cylinder 11.
[0020] The cylinder 11 has a cylindrical outer shape centered on the central axis O, and has an opening 11a at its lower end that serves as a suction port for the contents 4. Further, the cylinder 11 is provided with locking projections 11b on the outer peripheral surface of its upper end. In the present embodiment, two annular locking projections 11b are provided side by side at intervals in the vertical direction on the outer peripheral surface of the upper end of the cylinder 11. Note that the number of the locking projections 11b can be variously changed. Furthermore, the cylinder 11 is integrally provided with an annular outward flange 11c below the locking projection 11b. The pump module 10 is supported by the mouth portion 2a of the container body 2 and is suspended and held inside the container body 2 through the mouth portion 2a by arranging the outward flange 11c at the upper end of the mouth portion 2a of the container body 2. Note that the cylinder 11 can also be configured such that a ring-shaped seal body 12 for sealing between the cylinder 11 and the mouth portion 2a is mounted below the outward flange 11c.
[0021] The pump module 10 can also be configured such that a suction pipe 13 connected to the opening 11a is attached to the lower part of the cylinder 11.
[0022] The pump module 10 has a cylindrical stem 14 that protrudes upward from the upper end of the cylinder 11 and can be pushed downward into the cylinder 11. The stem 14 is cylindrical and extends along the central axis O, and its internal passage communicates with the internal space of the cylinder 11.
[0023] A piston 15 is mounted inside the cylinder 11 so as to be vertically movable. The piston 15 is in contact with the inner peripheral surface of the cylinder 11, and when the stem 14 is pushed downward, it moves downward together with the stem 14 and operates to discharge the contents 4 inside the cylinder 11 from the upper end of the stem 14.
[0024] Furthermore, a piston guide 16 is positioned inside the cylinder 11. The piston guide 16 is inserted inside the piston 15 and moves downward with the stem 14 when the stem 14 is pushed down. The portion of the piston 15 that contacts the piston guide 16 constitutes an upper valve body, which functions to allow the flow of contents 4 from inside the cylinder 11 to the stem 14 via the piston guide 16, and to block the flow of contents 4 from the stem 14 to inside the cylinder 11 via the piston guide 16.
[0025] Furthermore, a spring 17 is positioned inside the cylinder 11. The spring 17 is located between the piston guide 16 and the lower end of the cylinder 11, and biases the stem 14 and piston 15 upward via the piston guide 16.
[0026] Furthermore, a check valve 18 is positioned inside the cylinder 11 as a lower valve body that opens and closes the opening 11a at the lower end of the cylinder 11.
[0027] The pump module 10 operates and discharges when the stem 14 is pushed downward. That is, when the stem 14 is pushed downward, the piston 15 is pushed downward by the lower end of the stem 14, and the contents 4 inside the cylinder 11 are discharged upward from the upper end of the stem 14. On the other hand, when the downward pressure on the stem 14 is released, the biasing force of the spring 17 pushes the stem 14 and piston 15 upward together with the piston guide 16, returning them to their original positions. When the piston 15 moves upward, the inside of the cylinder 11 becomes negative pressure, the check valve 18 opens, and the contents 4 contained in the container body 2 are sucked into the inside of the cylinder 11 through the suction tube 13 and opening 11a.
[0028] The cylinder 11 may also be configured such that a communication port 11d is provided on its side wall below the outward-facing flange 11c, and an outer cylinder member 20 is provided on the outside of the stem 14 that moves vertically relative to the cylinder 11 to open and close the communication port 11d. With this configuration, when the inside of the container body 2 becomes negatively pressurized, outside air is taken in through the communication port 11d, which can suppress deformation of the container body 2.
[0029] A restricting member 19 is mounted inside the upper end of the cylinder 11 to restrict the upward movement of the stem 14. In this embodiment, the restricting member 19 is formed in an annular shape and fitted and fixed inside the upper end of the cylinder 11, restricting the upward movement of the stem 14 via the outer cylinder member 20. By restricting the upward movement of the stem 14 with the restricting member 19, the stem 14, piston 15, and piston guide 16 are held in place by the biasing force of the spring 17 without detaching from the cylinder 11. Therefore, even when the head module 30 is not attached to the pump module 10, each component remains a single unit without separation.
[0030] Thus, the pump module 10 is modularized by assembling the above-mentioned components in advance before the head module 30 and mounting cap 50 are attached.
[0031] The head module 30 has a push-down head 31. The push-down head 31 is a top-shaped cylinder having a circumferential wall 31a and a top wall 31b. A connecting cylinder portion 32 is integrally provided on the lower surface of the top wall 31b, which is fitted and fixed to the inner circumferential surface of the stem 14 and connected to the stem 14. The push-down head 31 also has an integral nozzle 33 that is connected to the connecting cylinder portion 32 and extends forward from the connecting cylinder portion 32, protruding forward from the circumferential wall 31a. The user can operate the push-down head 31 by applying a downward pushing force to the top wall 31b. When the push-down head 31 is pushed down, the stem 14 moves downward together with the push-down head 31, the pump module 10 is activated, and the contents 4 discharged from the stem 14 are discharged to the outside from the nozzle 33.
[0032] The push-down head 31 has a connecting cylinder portion 34 that is coaxially arranged on the outside of the connecting cylinder portion 32. The connecting cylinder portion 34 is integrally connected to the lower surface of the top wall 31b, and its inner circumferential surface is provided with an inwardly facing female screw 34a.
[0033] The head module 30 has a ring body 35 attached to the push-down head 31. The ring body 35 comprises an outer fitting cylinder 36 with a locking projection 36a on its inner circumference, an outer fitting cylinder 37 arranged coaxially on the outside of the outer fitting cylinder 36, and a connected cylindrical portion 38 having a male screw 38a as an outward-facing projection on its outer circumference. The ring body 35 is attached to the push-down head 31 when the connected cylindrical portion 38 is pushed (plugged) into the inside of the connecting cylindrical portion 34 along the central axis O, causing the male screw 38a to overcome the female screw 34a and engage with the female screw 34a. Furthermore, when the connected cylindrical portion 38 is pushed into the inside of the connecting cylindrical portion 34 along the central axis O, the portion of the female screw 34a facing downwards in the thread valleys is able to overcome the portion of the male screw 38a facing upwards in the threads, and the shape and height are such that the female screw 34a does not detach upwards from the male screw 38a due to the biasing force of the spring 17.
[0034] Thus, the head module 30 is modularized by having the ring body 35 attached to the push-down head 31 before it is assembled to the pump module 10.
[0035] In this embodiment, a transition cylinder portion 39, which is prevented from rotating relative to the push-down head 31, is integrally provided at the upper end of the connected cylinder portion 38 via a breakable weakening portion 39a. As shown in Figures 3 and 4, the transition cylinder portion 39 has a notch portion 39b in a part of its circumferential direction, and as shown in Figure 1, the nozzle 33 is positioned in the notch portion 39b to prevent it from rotating relative to the push-down head 31.
[0036] The head module 30 has a positioning section 40 that positions the press-down head 31 and the ring body 35 in the circumferential direction when attaching the ring body 35 to the press-down head 31. In this embodiment, the positioning section 40 is composed of a notch 39b and a nozzle 33. That is, after positioning the ring body 35 relative to the press-down head 31 so that the notch 39b is located below the nozzle 33, the ring body 35 can be attached to the press-down head 31 in the desired orientation by pushing the connected cylindrical portion 38 into the inside of the connecting cylindrical portion 34 along the central axis O.
[0037] The head module 30 with the above configuration is attached to the pump module 10 by pushing the outer fitting cylinder 36 onto the upper end of the cylinder 11, engaging the locking projection 36a with the locking projection 11b (undercut engagement), and fixing the ring body 35 to the cylinder 11.
[0038] As shown in Figure 1, the mounting cap 50 is made of synthetic resin material and comprises a cylindrical mounting cylinder portion 51 and an inward-facing flange 52 integrally provided at the upper end of the mounting cylinder portion 51. The mounting cap 50 is attached to the pump module 10 by positioning the inward-facing flange 52 between the outward-facing flange 11c and the outer casing 37. When the mounting cap 50 is not attached to the opening 2a, it is rotatable between the outward-facing flange 11c and the outer casing 37 relative to the pump module 10 and the head module 30. The mounting cap 50 is screw-connected to the opening 2a at the mounting cylinder portion 51, thereby attaching the pump-type discharger 1 to the opening 2a of the container body 2.
[0039] In the initial state when the pump-type discharge device 1 with the above configuration is attached to the mouth portion 2a of the container body 2, the female thread 34a of the connecting cylinder portion 34 of the push-down head 31 is screw-connected to the male thread 38a of the connected cylinder portion 38 of the ring body 35 fixed to the cylinder 11, so that the stem 14 is pushed into the inside of the cylinder 11 and the discharge operation is disabled.
[0040] From this state, when the push-down head 31 is rotated counterclockwise relative to the ring body 35, as shown in Figure 5, the threads of the male screw 38a and the female screw 34a are released, the push-down head 31 moves away from the ring body 35 and upward, and the pump-type discharge device 1 becomes capable of discharge operation by pressing down the push-down head 31.
[0041] At this time, the transition cylinder portion 39, which is prevented from rotating by the push-down head 31, rotates together with the push-down head 31 relative to the ring body 35, causing the weakened portion 39a to break, and the transition cylinder portion 39 separates from the ring body 35 and is fitted and fixed to the push-down head 31. As a result, the user can recognize that the container body 2 has been initially opened by the sensation of the weakened portion 39a breaking.
[0042] Then, when the push-down head 31 is pressed down from the state shown in Figure 5, the pump module 10 performs a discharge operation and the contents 4 are discharged from the nozzle 33. When the push-down operation of the push-down head 31 is released, the push-down head 31 moves upward, creating negative pressure inside the cylinder 11, and the contents 4 contained in the container body 2 are sucked into the cylinder 11.
[0043] Next, a method for manufacturing a pump-type dispensing device 1 having the above configuration, that is, a method for manufacturing a pump-type dispensing device according to one embodiment of the present invention, will be described.
[0044] The manufacturing method of the pump-type discharge device of this embodiment includes the steps of manufacturing a pump module 10 having the above configuration, manufacturing a head module 30 having the above configuration, and manufacturing a mounting cap 50 having the above configuration. Specifically, as shown in Figure 2, in the step of manufacturing the pump module 10, a modularized pump module 10 is manufactured in which components such as a stem 14 and a piston 15 are pre-assembled on a cylinder 11; in the step of manufacturing the head module 30, a modularized head module 30 is manufactured in which a ring body 35 is pre-attached to a push-down head 31; and in the step of manufacturing the mounting cap 50, a mounting cap 50 having the above configuration is manufactured.
[0045] After the pump module 10, head module 30, and mounting cap 50 are manufactured through the above process, the next step is to position the inward flange 52 between the outward flange 11c and the outer cylinder 37, push the outer fitting cylinder 36 onto the upper end of the cylinder 11, and engage the locking projection 36a with the locking projection 11b in an undercut manner, thereby attaching the head module 30 and mounting cap 50 to the pump module 10. Through this step, the pump module 10, head module 30, and mounting cap 50 are assembled and the pump-type discharge device 1 is completed.
[0046] As described above, according to the pump-type dispensing device 1 or the manufacturing method of the pump-type dispensing device according to this embodiment, the modularized pump module 10 and head module 30 are manufactured in advance, so the pump-type dispensing device 1 can be easily manufactured by assembling the modularized pump module 10 and head module 30 with the mounting cap 50.
[0047] Furthermore, by making the modularized pump module 10 a common part that can be used in common with multiple types of discharge containers 3, and by assembling multiple types of head modules 30 with different nozzle shapes, etc., and multiple types of mounting caps 50 with different sizes, etc., to this pump module 10, multiple types of discharge containers 3 can be easily manufactured.
[0048] In this case, the head module 30 does not require screwing the ring body 35 to the push-down head 31, but rather the push-down head 31 and the ring body 35 are positioned circumferentially by the positioning part 40, and the ring body 35 can be attached to the push-down head 31 in a simple process of pushing the connected cylindrical part 38 into the inside of the connecting cylindrical part 34. This makes it easier to manufacture the pump-type discharge device 1 or the discharge container 3 using the same.
[0049] In particular, in the case of the configuration in which the transition cylinder portion 39 provided on the ring body 35 is prevented from rotating by the push-down head 31, as in this embodiment, the ring body 35 cannot be screwed onto the push-down head 31. However, with the pump-type discharger 1 or the discharge container 3 using the same of this embodiment, the pump-type discharger 1 or the discharge container 3 using the same can be easily manufactured even with such a configuration.
[0050] As shown in the modified example in Figure 6, the pump-type discharger 1 or the discharge container 3 using the same may have a configuration in which the ring body 35 does not have a transition cylinder portion 39, and a pair of inwardly facing projections 34b are provided on the inner circumferential surface of the connecting cylinder portion 34, straddling the central axis O, and a pair of outwardly facing projections 38b are provided on the outer circumferential surface of the connected cylinder portion 38, straddling the central axis O. As shown in Figures 8 and 9, the outer circumferential surface of the connected cylinder portion 38 is provided with a lateral passage 38c extending circumferentially from below the projections 38b, and a vertical passage 38d connected to the lateral passage 38c and open at the upper end of the connected cylinder portion 38. Therefore, by rotating the push-down head 31 relative to the ring body 35, the engagement projections 34b can be moved from the position where they engage with the projections 38b to below the vertical passage 38d along the lateral passage 38c, thereby moving the push-down head 31 upward relative to the ring body 35.
[0051] In this modified example, the positioning portion 40 is composed of a first projection 41 provided on the peripheral wall 31a of the push-down head 31, as shown in Figure 7, and a second projection 42 provided on the outer peripheral surface of the outer cylinder 37 of the ring body 35, as shown in Figures 6 and 9. With the circumferential positions of the first projection 41 and the second projection 42 aligned, the connected cylinder portion 38 is pushed inward into the connecting cylinder portion 34 along the central axis O, thereby attaching the ring body 35 to the push-down head 31 in the desired orientation and engaging the engaging projection 34b with the engaged projection 38b.
[0052] The present invention is not limited to the embodiments described above, and can be modified in various ways without departing from its spirit.
[0053] For example, the positioning unit 40 may be set or used in a position or configuration other than those shown in the above embodiment or modification. [Explanation of symbols]
[0054] 1. Pump-type dispensing device 2. Container body 2a Mouth 3 Discharge container 4 Contents 10 Pump Modules 11 cylinders 11a opening 11b Locking protrusion 11c outward flange 11d Communication port 12 seals 13 Suction tube 14 Stem 15 pistons 16 Piston Guide 17 Spring 18. Check valve 19 Regulating members 20 Outer cylinder member 30 Head Modules 31. Push-down head 31a Peripheral wall 31b Ceiling wall 32 Connecting cylinder section 33 nozzles 34 Connecting cylinder part 34a Female thread (inward-facing protrusion) 34b Engaging projection (inwardly protruding part) 35 ring body 36 External fitting tube 36a Locked protrusion 37 Exterior tube 38 Connected cylinder part 38a Male screw (outward-facing protrusion) 38b Engaged protrusion (outward convex part) 38c side passage 38d Vertical aisle 39 Transition cylinder section 39a Weakened part 39b Notch 40 Positioning section 41 1st protrusion 50 Attachment cap 51 Mounting cylinder 52 Inward flange O center axis
Claims
1. A pump-type dispensing device that is attached to the mouth of the container body for use, A cylinder having a cylindrical outer shape with a locking projection on the outer circumferential surface of the upper end and an annular outward-facing flange integrally provided below the locking projection, A cylindrical stem that protrudes upward from the upper end of the cylinder and can be pushed down toward the interior of the cylinder, A piston is mounted inside the cylinder so as to be able to move up and down, and when the stem is pushed down, it moves downward together with the stem to discharge the contents inside the cylinder from the upper end of the stem. A spring is disposed inside the cylinder and biases the stem and the piston upward, A restricting member is mounted inside the upper end of the cylinder and restricts the upward movement of the stem, A pump module having a check valve that opens and closes the opening at the lower end of the cylinder, A push-down head comprising a connecting cylindrical portion connected to the stem, a nozzle connected to the connecting cylindrical portion, and a connecting cylindrical portion having an inwardly facing protrusion on its inner circumferential surface and coaxially positioned outside the connecting cylindrical portion, A ring body comprising an outer fitting cylinder having a locking projection on its inner circumference, an outer casing cylinder coaxially positioned outside the outer fitting cylinder, and a connecting cylinder portion having an outward-facing projection on its outer circumference, wherein the connecting cylinder portion is pushed inward into the connecting cylinder portion and the outward-facing projection engages with the inward-facing projection, and the ring body is attached to the push-down head. The ring body has a positioning unit that positions the press-down head and the ring body in the circumferential direction when the ring body is attached to the press-down head, A head module is attached to the pump module by pushing the outer fitting cylinder onto the upper end of the cylinder and engaging the locking projection with the locking projection, The mounting cap comprises a mounting cylinder portion that is fitted to the opening portion, and an inward-facing flange provided at the upper end of the mounting cylinder portion, wherein the inward-facing flange is positioned between the outward-facing flange and the outer cylinder to be attached to the pump module. A pump-type discharge device characterized in that a transition cylinder portion, which is prevented from rotating relative to the downward-pressing head, is integrally provided at the upper end of the connected cylinder portion via a breakable weakening portion.
2. The transition cylinder portion is provided with a notch in a part of its circumferential direction, and the nozzle is positioned in the notch to prevent it from rotating relative to the push-down head. The pump-type discharge device according to claim 1, wherein the positioning portion is formed by the notch and the nozzle.
3. A method for manufacturing a pump-type dispensing device that is attached to the mouth of a container body, A cylinder having a cylindrical outer shape with a locking projection on the outer circumferential surface of the upper end and an annular outward-facing flange integrally provided below the locking projection, A cylindrical stem that protrudes upward from the upper end of the cylinder and can be pushed down toward the interior of the cylinder, A piston is mounted inside the cylinder so as to be able to move up and down, and when the stem is pushed down, it moves downward together with the stem to discharge the contents inside the cylinder from the upper end of the stem. A spring is disposed inside the cylinder and biases the stem and the piston upward, A restricting member is mounted inside the upper end of the cylinder and restricts the upward movement of the stem, A step of manufacturing a pump module having a check valve that opens and closes the opening at the lower end of the cylinder, A push-down head comprising a connecting cylindrical portion connected to the stem, a nozzle connected to the connecting cylindrical portion, and a connecting cylindrical portion having an inwardly facing protrusion on its inner circumferential surface and coaxially positioned outside the connecting cylindrical portion, A ring body comprising an outer fitting cylinder having a locking projection on its inner circumference, an outer casing cylinder coaxially positioned outside the outer fitting cylinder, and a connecting cylinder portion having an outward-facing projection on its outer circumference, wherein the connecting cylinder portion is pushed inward into the connecting cylinder portion and the outward-facing projection engages with the inward-facing projection, and the ring body is attached to the push-down head. A step of manufacturing a head module having a positioning unit that positions the press-down head and the ring body in the circumferential direction when the ring body is attached to the press-down head, A process for manufacturing a mounting cap comprising a mounting cylinder portion that is attached to the opening portion and an inward-facing flange provided at the upper end of the mounting cylinder portion, The process includes the step of attaching the head module and the mounting cap to the pump module by positioning the inward flange between the outward flange and the outer cylinder, and then pushing the outer fitting cylinder onto the upper end of the cylinder to engage the locking projection with the locking projection, A method for manufacturing a pump-type discharge device, characterized in that the ring body is provided with a transition cylinder portion, which prevents rotation relative to the push-down head, integrally attached to the upper end of the connected cylinder portion via a breakable weakening portion.