Pump-type dispensing device

Abstract

We propose a pump-type discharger that allows the head to be raised stably without the discharger height becoming excessively high. [Solution] In the pump-type discharger 100, the pump has a first elastic piece 8e extending upward, the caps 10 and 11 are located further away from the central axis O than the first elastic piece 8e and have a second elastic piece 10e extending upward, and the stem 7a or heads 12 and 13 have a pressing portion 13b that contacts the first elastic piece 8e and the second elastic piece 10e, and when the heads 12 and 13 are pressed, elastically deforms the first elastic piece 8e toward the central axis O and elastically deforms the second elastic piece 10e toward the central axis O.

Description

[Technical Field]

[0001] The present invention relates to a pump-type discharger. [Background Art]

[0002] As a pump-type discharger, there is already known a discharger that includes a cap attached to a mouth of a container, a pump held at the mouth by the cap and driven by forward and backward movement of a stem, and a head connected to the stem, wherein the content liquid in the container is discharged from a discharge port of the head by moving the head toward the cap (see, for example, Patent Document 1).

[0003] Inside such a pump-type discharger, as disclosed in Patent Document 1, a coil spring is provided to return the head, which has been moved toward the cap, to an initial position. In this type of pump-type discharger, although most members are made of synthetic resin, the coil spring is made of metal. Therefore, when discarded after use, there is a problem that the pump-type discharger cannot be recycled as a resin product in its current state. In addition, in this type of pump-type discharger, to prevent members from coming off during normal use, the members are firmly fixed to each other, for example, by fitting. Accordingly, it also takes time and effort to disassemble the pump-type discharger and separate the coil spring from other members.

[0004] To address such a problem, Patent Document 2 discloses a pump-type discharger in which an elastic piece is provided on a cap or a head instead of a coil spring. In the pump-type discharger of Patent Document 2, when the head is lowered (advanced) toward the cap to discharge the content liquid, the elastic piece is elastically deformed to bend in a direction approaching (or moving away from) the central axis of the stem. When the pressing force applied to the head is released after discharge, the elastically deformed elastic piece restores its shape, so the head can be raised (retracted) by the restoring elastic piece in the same manner as in the conventional art. Furthermore, the pump-type discharger of Patent Document 2 does not require a work of separating the coil spring when discarded, and can be reused as a resin product as it is, so it is also excellent in recyclability. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2011-31950 [Patent Document 2] Japanese Patent Publication No. 2024-50382 [Overview of the project] [Problems that the invention aims to solve]

[0006] Incidentally, the force required to raise the head after it has been pushed down is relatively large, and depending on the operating environment, the resistance to raising the head may increase. For this reason, in order to stably raise the head using an elastic piece, the elastic piece needs to be bent significantly. However, bending the elastic piece significantly makes it prone to wear, so considering the effect of wear, the length of the elastic piece must be increased, which increases the height of the dispenser. Furthermore, some containers attached to pump-type dispensers have a small outer diameter at the opening, and pump-type dispensers attached to containers with a small outer diameter at the opening often have a small outer diameter and height. Therefore, if the size of the elastic piece is determined by focusing only on the force required to raise the head and the effect of wear due to bending, the height of the dispenser will become too high relative to the container, which is aesthetically problematic.

[0007] In view of these points, the present invention aims to propose a pump-type discharger that can stably raise the head and prevents the height of the discharger from becoming too high. [Means for solving the problem]

[0008] The pump-type dispenser of the present invention comprises a cap attached to the mouth of a container that holds liquid contents, a pump located inside the mouth and held in the mouth by the cap and driven by the movement of a stem, and a head having a discharge port for discharging the liquid contents to the outside and connected to the stem, wherein the liquid contents in the container are discharged from the discharge port by moving the head along the central axis of the stem, the pump has a first elastic piece extending upward, the cap has a second elastic piece located further away from the central axis than the first elastic piece and extending upward, and the stem or the head has a pressing portion that contacts the first elastic piece and the second elastic piece and, when the head is pressed, elastically deforms the first elastic piece toward the central axis and elastically deforms the second elastic piece toward the central axis. [Effects of the Invention]

[0009] The pump-type discharger of the present invention is equipped with two types of elastic pieces: a first elastic piece provided on the pump and a second elastic piece provided on the cap. When the head is pressed, both the first and second elastic pieces can be bent by the pressing part. In other words, the force required to raise the head can be increased without increasing the length of each individual elastic piece, so that the head can be raised stably while keeping the height of the discharger low. [Brief explanation of the drawing]

[0010] [Figure 1] This is a side view cross-sectional view showing the state in which the head of one embodiment of the pump-type discharger according to the present invention is at its upper limit. [Figure 2A] This is a plan view of the holder shown in Figure 1. [Figure 2B] This is a cross-sectional view along line AA shown in Figure 2A. [Figure 2C] This is a cross-sectional view along BB shown in Figure 2A. [Figure 3A] Figure 1 is a plan view of the cap shown. [Figure 3B]This is a cross-sectional view along CC shown in Figure 3A. [Figure 4] Figure 1 is a cross-sectional side view of the pump-type discharger, showing the state where the head is at its lowest position. [Modes for carrying out the invention]

[0011] Hereinafter, an embodiment of the pump-type discharger according to the present invention will be described with reference to the drawings. In this specification, the vertical direction is the direction along the central axis O shown in the figure (the central axis of the stem 7a described later), where the side where the pipe 4 is located is "down" and the side where the head body 12 is located is "up". The radial direction is the direction perpendicular to the central axis O in a plane perpendicular to the central axis O, and the circumferential direction is the direction of rotation around the central axis O in this plane.

[0012] Figure 1 shows a pump-type dispenser 100, which is one embodiment of the pump-type dispenser according to the present invention. The pump-type dispenser 100 of this embodiment is used by being attached to the mouth of a bottle-shaped container (not shown). The liquid contents to be dispensed by the pump-type dispenser 100 are, for example, cosmetics (such as lotions and toners), shampoos, body soaps, hand soaps, facial cleansers, etc.

[0013] The pump-type discharger 100 consists of a cylinder 1, a valve member 2, a pipe 4, an internal member 5, a piston 6, a cylindrical member 7, a holder 8, a packing 9, a cap body 10, a cap cover 11, a head body 12, and an inner head member 13. Here, the cylinder 1, valve member 2, internal member 5, piston 6, cylindrical member 7, and holder 8 are components that constitute the "pump" as defined herein, the cap body 10 and cap cover 11 are components that constitute the "cap" as defined herein, and the head body 12 and inner head member 13 are components that constitute the "head" as defined herein. Of the above components, the valve member 2, piston 6, and packing 9 are made of elastic, soft synthetic resin (e.g., polyethylene (LDPE, HDPE, foamed PE)), while the other components are made of hard synthetic resin (e.g., polypropylene (PP), polybutylene terephthalate (PBT), polyacetal (POM), polyketone (POK) resin, etc.). Furthermore, each component of the pump-type discharger 100 is basically shaped with respect to the central axis O.

[0014] The cylinder 1 has a disc-shaped bottom wall portion 1a with a central part protruding upward, a stepped cylindrical cylindrical wall portion 1b that rises from the outer edge of the bottom wall portion 1a and has a larger diameter at the top than at the bottom, and a flange portion 1c that extends radially outward from the top of the cylindrical wall portion 1b. A through hole (suction port 1d) is provided in the central part of the protruding portion of the bottom wall portion 1a. A cylindrical retaining cylinder 1e is provided on the lower surface of the bottom wall portion 1a, surrounding the suction port 1d and extending downward to hold the pipe 4. A through hole (vent 1f) is provided in the cylindrical wall portion 1b.

[0015] The valve member 2 comprises a base portion 2a that is fitted and held to the inner circumferential surface of the cylindrical wall portion 1b, a valve body portion 2b that covers the suction port 1d inside the base portion 2a and sits on the upper surface of the bottom wall portion 1a, and an elastically deformable connecting piece 2c that connects the base portion 2a and the valve body portion 2b. The valve member 2 functions as a check valve, and when the inside of the cylinder 1 becomes depressurized, the valve body portion 2b that was closing the suction port 1d separates from the bottom wall portion 1a, opening the suction port 1d.

[0016] The pipe 4 is hollow, and the upper end portion thereof is inserted into the holding cylinder 1e and fitted and held thereby.

[0017] The internal member 5 is a member disposed inside the cylinder 1 and moves up and down relative to the cylinder 1. The internal member 5 includes a connecting cylinder 5a which is cylindrical and has a closed lower end, and a lower wall portion 5b provided on the outer peripheral surface of the connecting cylinder 5a. In the present embodiment, the lower wall portion 5b is formed in a shape that extends radially outward from the outer peripheral surface of the connecting cylinder 5a, then extends downward, and then extends further radially outward. The connecting cylinder 5a is provided with a hole penetrating therethrough, which is the communication port 5c.

[0018] The piston 6 is inserted through the connecting cylinder 5a and disposed inside the cylinder 1. In the present embodiment, the piston 6 includes an annular base portion 6a. An outer sliding piece 6b extending upward and downward from the base portion 6a is provided at the outer edge of the base portion 6a. The outer sliding piece 6b is in fluid-tight contact slidably against the inner peripheral surface of the cylindrical wall portion 1b. An inner sliding piece 6c extending upward and downward from the base portion 6a is provided at the inner edge of the base portion 6a. The lower portion of the inner sliding piece 6c is in fluid-tight contact against the lower wall portion 5b, and the upper portion of the inner sliding piece 6c is in fluid-tight contact slidably against the inner peripheral surface of the diameter-expanded portion 7b described later of the cylindrical member 7.

[0019] The cylindrical member 7 is an overall cylindrical member. The cylindrical member 7 includes a cylindrical stem 7a, and a diameter-expanded portion 7b connected to the lower end of the stem 7a and having a larger diameter than the stem 7a. When the connecting cylinder 5a is inserted into the stem 7a, the two are fitted to each other, so the internal member 5 and the cylindrical member 7 move integrally relative to the cylinder 1.

[0020] The holder 8 is a component provided on the upper inner surface of the cylinder 1. The holder 8 has a plate-shaped base portion 8a that is ring-shaped in plan view. The base portion 8a is located where the stepped portion of the stepped cylindrical wall portion 1b is provided. As shown in Figure 1, the holder 8 also has a cylindrical lower holder portion 8b extending downward from the lower surface of the base portion 8a, a cylindrical upper holder portion 8c extending upward from the outer edge of the upper surface of the base portion 8a, and a holder flange portion 8d extending radially outward from the upper end of the upper holder portion 8c. When the holder 8 is attached to the cylinder 1, the holder flange portion 8d contacts the upper surface of the flange portion 1c, and the base portion 8a, the lower holder portion 8b, and the upper holder portion 8c are fitted and held in place by the inner circumferential surface of the cylindrical wall portion 1b. In this embodiment, the upper surface of the base portion 8a is located below the upper surface of the flange portion 1c.

[0021] The holder 8 also includes a first elastic piece 8e that extends upward from the upper surface of the base portion 8a and is elastically deformable radially inward. As shown in Figure 2A, the first elastic pieces 8e in this embodiment are provided in multiple quantities (four in this embodiment) at equal intervals in the circumferential direction. As shown in Figures 2A and 2B, the first elastic piece 8e includes a plate-shaped first elastic piece body 8f and a first reinforcing rib 8g provided radially inward of the first elastic piece body 8f, which is narrower than the first elastic piece body 8f (shorter in circumferential length than the first elastic piece body 8f). As shown in the figure, the first reinforcing rib 8g has a thicker thickness (radial length) at its base and a thinner thickness at its tip. In other words, the first elastic piece 8e in this embodiment is more flexible at the tip and less flexible at the base due to the first reinforcing rib 8g.

[0022] Furthermore, the holder 8 is equipped with holder ribs 8h as shown in Figures 2A and 2C. The holder ribs 8h are plate-shaped and are provided where the base portion 8a and the upper cylindrical portion 8c of the holder connect. In this embodiment, multiple holder ribs 8h (four in this embodiment) are provided at equal intervals in the circumferential direction in the intermediate portion between adjacent first elastic pieces 8e. The height of the holder ribs 8h is set such that their upper ends are lower than the upper surface of the holder flange portion 8d, as shown in Figure 2C.

[0023] Furthermore, as shown in Figure 1, when the holder 8 is attached to the inside of the cylinder 1, the base portion 8a protrudes above the enlarged diameter portion 7b, thereby preventing the internal member 5, piston 6, and cylindrical member 7 from coming out of the cylinder 1.

[0024] The packing 9 is an annular plate shape and is inserted through the cylindrical wall portion 1b of the cylinder 1 and fitted and held in place therewith. When the pump-type dispenser 100 is attached to a container (not shown), the packing 9 is sandwiched between the mouth and flange portion 1c of the container. This prevents problems such as the contents spilling out of the mouth when the container is tipped over.

[0025] The cap body 10 is disc-shaped and has a top wall 10a with a through hole in the center. The top wall 10a is located above the flange portion 1c and the holder flange portion 8d which overlaps the flange portion 1c, and the lower surface of the top wall 10a is shaped such that the inner edge is above the outer edge. As a result, the lower surface of the top wall 10a is in contact with both the flange portion 1c and the holder flange portion 8d. The outer edge of the top wall 10a is provided with a stepped cylindrical peripheral wall 10b that extends downward, then radially outward, and then further downward. The upper part of the inner circumferential surface of the peripheral wall 10b bulges radially inward, making it possible to fit and hold the flange portion 1c, thereby holding the cylinder 1 in the cap body 10. Furthermore, the inner circumferential surface of the cap body 10 is provided with a female threaded portion 10c that screws onto a male threaded portion provided at the mouth of the container, and the cap body 10 can be attached to the container by screwing the male threaded portion and the female threaded portion 10c together. The outer circumferential surface of the peripheral wall 10b is provided with anti-rotation recesses 10d that extend in the vertical direction, as shown in the partially enlarged view of Figure 1. Multiple anti-rotation recesses 10d are provided at intervals in the circumferential direction.

[0026] The cap body 10 also includes a second elastic piece 10e that extends upward from the upper surface of the top wall 10a and is elastically deformable radially outward. As shown in Figure 3A, the second elastic piece 10e in this embodiment is provided in multiples (12 in this embodiment) at equal intervals in the circumferential direction. The second elastic piece 10e includes a plate-shaped second elastic piece body 10f as shown in Figures 3A and 3B, and a second reinforcing rib 10g provided radially outward from the second elastic piece body 10f and being narrower than the second elastic piece body 10f (shorter in circumferential length than the second elastic piece body 10f). As shown in the figure, the second reinforcing rib 10g has a thicker thickness (radial length) at its base and a thinner thickness at its tip. In other words, the second elastic piece 10e in this embodiment is more flexible at the tip and less flexible at the base due to the second reinforcing rib 10g.

[0027] As shown in Figure 1, the top wall 10a is located above the base portion 8a, and the heights of the upper end of the first elastic piece 8e and the upper end of the second elastic piece 10e are approximately the same. In other words, the vertical length of the first elastic piece 8e in this embodiment is longer than the vertical length of the second elastic piece 10e.

[0028] The cap cover 11 has a cover peripheral wall 11a that is cylindrical overall. The cover peripheral wall 11a in this embodiment has a cylindrical lower part that surrounds the peripheral wall 10b, a cylindrical intermediate part that has a smaller diameter than the lower part and is located radially outward from the second elastic piece 10e, and a cylindrical upper part that has a smaller diameter than the intermediate part and is located above the second elastic piece 10e, and is formed in such a way that the lower part and the intermediate part, and the intermediate part and the upper part are connected by radially extending stepped portions. The lower end of the cover peripheral wall 11a is provided with a retaining projection 11b that protrudes radially inward and engages with the lower end of the peripheral wall 10b. The inner circumferential surface of the cover peripheral wall 11a is provided with a rib 11c that extends in the vertical direction. The lower part of the rib 11c engages with an anti-rotation recess 10d (see partial enlarged view of Figure 1), and the cap cover 11 is held in place by the cap body 10 in an anti-rotation manner.

[0029] The head body 12 is cylindrical and includes a cylindrical portion 12a that is inserted inside the stem 7a and fitted and held therein. The top of the cylindrical portion 12a is provided with a top portion 12b that has a flat upper surface. The top portion 12b is provided with a cylindrical nozzle 12c that is cylindrical, extends radially outward, and leads to the inside of the cylindrical portion 12a. The tip of the nozzle 12c is provided with a discharge port 12d through which the liquid contents are discharged by a pump-type dispenser 100.

[0030] The head body 12 also includes a cylindrical head circumferential wall 12e that extends downward from the top portion 12b and the nozzle 12c. Between the cylindrical portion 12a and the head circumferential wall 12e, plate-shaped head reinforcing ribs 12f are provided at intervals in the circumferential direction.

[0031] In this embodiment, the inner head member 13 includes a holding portion 13a held by the stem 7a and a pressing portion 13b connected to the holding portion 13a, which contacts the first elastic piece 8e and the second elastic piece 10e, as will be described later. The holding portion 13a in this embodiment is cylindrical, and the stem 7a is inserted inside it and fitted and held by the stem 7a. The pressing portion 13b includes a downward inclined portion 13c that extends radially outward downward from the holding portion 13a and contacts the first elastic piece 8e, and an upward inclined portion 13d that extends radially outward upward from the lower end of the downward inclined portion 13c and contacts the second elastic piece 10e.

[0032] When the pump-type discharger 100, composed of such components, is attached to a container (not shown), as shown in Figure 1, in the state before the head body 12 is pressed, the downward inclined portion 13c is in contact with the first elastic piece 8e, causing the first elastic piece 8e to bend slightly radially inward, and the upward inclined portion 13d is in contact with the second elastic piece 10e, causing the second elastic piece 10e to bend slightly radially outward, thereby moving the head body 12 to its upper limit.

[0033] Then, when dispensing the liquid contents from the container equipped with the pump-type dispenser 100, the head body 12 is pressed from above to lower it. As a result, the stem 7a is pushed down together with the head body 12. At the same time, the downward inclined portion 13c applies pressure to the first elastic piece 8e, causing the first elastic piece 8e to bend radially inward, and the upward inclined portion 13d applies pressure to the second elastic piece 10e, causing the second elastic piece 10e to bend radially outward.

[0034] As the stem 7a is pushed down, the lower wall portion 5b also descends via the connecting cylinder 5a, releasing the liquid-tight contact between the lower wall portion 5b and the lower part of the inner sliding piece 6c. As the head body 12 is pushed down further, the piston 6 descends along with the cylindrical member 7 and the internal member 5, pressurizing the inside of the cylinder 1. As a result, the liquid inside the cylinder 1 passes through the communication port 5c, through the connecting cylinder 5a, the stem 7a, the cylindrical portion 12a, and the inside of the nozzle 12c, and is discharged to the outside world from the discharge port 12d. When the head body 12 is pressed and the piston 6 descends below the vent port 1f, a container (not shown) communicates with the outside world via the vent port 1f. This prevents negative pressure from forming inside the container even when the liquid inside decreases, thus preventing the container from deforming and collapsing.

[0035] Subsequently, when the pressure on the head body 12 is released, the elastic force of the elastically deformed first elastic piece 8e and second elastic piece 10e acts on the head body 12, causing the head body 12 to begin rising. As a result, the lower wall portion 5b and the lower part of the inner sliding piece 6c come into liquid-tight contact again, and the piston 6 rises together with the internal member 5, causing the inside of the cylinder 1 to be depressurized. This causes the valve body portion 2b to separate from the bottom wall portion 1a, opening the suction port 1d, and allowing the liquid contents of the container to be drawn into the cylinder 1 through the pipe 4. Subsequently, when the head body 12 is pressed, the liquid contents of the cylinder 1 are discharged again from the discharge port 12d.

[0036] As described above, in this embodiment, the pump-type discharger 100 has elastic forces from both the first elastic piece 8e and the second elastic piece 10e acting on the head body 12. Therefore, even if the resistance to the upward movement of the head body 12 increases due to the operating environment, for example, the head body 12 can be stably moved to its upper limit. Furthermore, by arranging the first elastic piece 8e and the second elastic piece 10e with a radial offset, the number of elastic pieces needed to raise the head body 12 can be increased. In other words, if the head body 12 is to be raised with a small number of elastic pieces, the length of the elastic pieces must be increased. However, even if the length of the elastic pieces is short, the force required to raise the head body 12 can be obtained by increasing their number, so the height of the pump-type discharger 100 does not become excessively large.

[0037] Furthermore, since the first elastic piece 8e and the second elastic piece 10e bend in opposite directions in the radial direction, radial wobbling can be suppressed when the head body 12 moves vertically. As a result of suppressing radial wobbling, the tilt of the head body 12 is suppressed when it rises, and no unnecessary resistance acts on it, allowing the head body 12 to rise smoothly.

[0038] In this embodiment, the base portion 8a on which the first elastic piece 8e is provided is positioned below the flange portion 1c. That is, even when setting the position of the upper end of the first elastic piece 8e so as not to be too high in order to keep the height of the pump-type discharger 100 down, the length of the first elastic piece 8e provided on the base portion 8a can be increased, thereby suppressing deformation of the first elastic piece 8e while increasing the elastic force obtained.

[0039] Furthermore, by positioning the second elastic piece 10e radially outward relative to the first elastic piece 8e, the number of second elastic pieces 10e can be increased compared to the first elastic piece 8e. In other words, even if the length of the second elastic piece 10e is shortened to reduce the amount of deflection, the force acting on the head body 12 can be increased by the numerous second elastic pieces 10e, thereby allowing the head body 12 to rise more stably.

[0040] Although one embodiment of the present invention has been described above with reference to the drawings, this embodiment may be modified as follows. For example, the pump described above is just one example, and the present invention also includes the use of other types of pumps.

[0041] In the embodiment described above, the pressing portion 13b was provided on the inner head member 13, but it may also be provided on the stem 7a.

[0042] Furthermore, the number of first elastic pieces 8e and second elastic pieces 10e, and the positions in which they are provided, are not limited to the embodiments described above and can be changed as appropriate.

[0043] (Note) This specification discloses the following technologies in one aspect. The reference numerals listed below correspond to those used in the accompanying drawings, but are provided as examples only and are not intended to limit the inventions of this application.

[0044] (Technology 1) A pump-type dispenser (100) comprising: a cap (10, 11) attached to the mouth of a container that holds liquid contents; a pump located inside the mouth and held in place by the cap (10, 11), driven by the movement of a stem (7a); and a head (12, 13) connected to the stem (7a) and having a discharge port (12d) for discharging the liquid contents to the outside, wherein the liquid contents in the container are discharged from the discharge port (12d) by moving the head (12, 13) along the central axis (O) of the stem (7a), The pump has a first elastic piece (8e) extending upward, The caps (10, 11) have a second elastic piece (10e) that is located further away from the central axis (O) than the first elastic piece (8e) and extends upward, A pump-type discharger (100) wherein the stem (7a) or the head (12, 13) has a pressing portion (13b) that contacts the first elastic piece (8e) and the second elastic piece (10e), and when the head (12, 13) is pressed, it elastically deforms the first elastic piece (8e) toward the central axis (O) and the second elastic piece (10e) toward the central axis (O).

[0045] This technology allows both the first and second elastic pieces to bend when the head is pressed. This means that the force required to raise the head can be increased without increasing the length of each individual elastic piece, allowing the head to rise stably while keeping the height of the dispenser low. Furthermore, because the bending directions of the first and second elastic pieces are opposite in the radial direction, radial wobbling is suppressed when the head moves vertically. Additionally, tilting is reduced as the head rises, eliminating unnecessary resistance and allowing the head to rise smoothly.

[0046] (Technology 2) The pump has a flange portion (1c) located above the opening when installed, and a base portion (8a) located below the flange portion (1c). The first elastic piece (8e) extends upward from the base portion (8a), as described in Technical 1, for the pump-type discharger (100).

[0047] This technology allows for increasing the length of the first elastic piece at the base, even when setting the upper end of the first elastic piece to be positioned too high in order to reduce the height of the pump-type discharger. This suppresses deformation of the first elastic piece while increasing the resulting elastic force.

[0048] (Technology 3) The pump-type discharger (100) described in Technical 1, wherein the second elastic piece (10e) is provided in multiple quantities at intervals in a direction circumferential to the central axis (O), and the number of second elastic pieces (10e) is greater than the number of first elastic pieces (8e).

[0049] This technology increases the number of second elastic pieces, so even when the length of the second elastic pieces is shortened to reduce the amount of deflection in order to lower the height of the dispenser, the force acting on the head is increased, allowing the head to rise stably.

[0050] (Technology 4) The pump-type discharger (100) according to Technical 1, wherein the pressing portion (13b) has a holding portion (13a) held by the stem (7a) or the heads (12, 13), a downward inclined portion (13c) extending downward from the holding portion (13a) in a direction away from the central axis (O) and in contact with the first elastic piece (8e), and an upward inclined portion (13d) extending upward from the downward inclined portion (13c) in a direction away from the central axis (O) and in contact with the second elastic piece (10e).

[0051] This technology makes the structure of the pressing section, which elastically deforms the first elastic piece toward the central axis and the second elastic piece toward the central axis, more suitable for mass production, thus facilitating the realization of the present invention.

[0052] Although one embodiment of the present invention has been described above, the present invention is not limited to such specific embodiments, and unless otherwise specifically limited in the above description, various modifications and changes are possible within the scope of the spirit of the present invention as described in the claims. For example, the configuration of the above-described embodiment can be added or deleted as appropriate, and the configuration of one embodiment can be provided in other embodiments. Furthermore, the effects in the above-described embodiment are merely illustrative of the effects that may result from the present invention. In other words, the effects of the present invention are not limited to the above-described effects, and additional effects may also be produced in addition to the above-described effects. [Explanation of symbols]

[0053] 1: Cylinder (pump) 1a: Bottom wall part 1b: Cylinder wall 1c: Flange section 1d: Inlet 1e: Holding tube 1F: Ventilation opening 2: Valve component (pump) 2a: Base 2b: Valve body 2c: Connecting piece 4: Pipe 5: Internal components (pump) 5a: Connecting tube 5b: Lower wall part 5c: Communication port 6: Piston (pump) 6a: Base 6b: Outer sliding piece 6c: Inner sliding piece 7: Cylindrical member (pump) 7a: Stem 7b: Expanded diameter part 8: Holder (pump) 8a: Base section 8b: Lower cylinder part of the holder 8c: Upper cylinder part of the holder 8d: Holder flange section 8e: First elastic piece 8f: First elastic piece body 8g: First reinforcing rib 8h: Holder Rib 9: Packing 10: Cap body (cap) 10a: Ceiling wall 10b: Peripheral wall 10c: Female thread section 10d: Anti-rotation recess 10e: Second elastic piece 10f: Second elastic piece body 10g: Second reinforcing rib 11: Cap cover (cap) 11a: Cover surrounding wall 11b: Retaining protrusion 11c: Rib 12: Head body (head) 12a: Cylindrical part 12b:Top 12c: Nozzle 12d: Discharge port 12e: Head surrounding wall 12f: Head reinforcement rib 13: Internal head component (head) 13a: Holding part 13b: Pressing part 13c: Downhill section 13d: Uphill slope 100: Pump-type dispensing device O: Central axis

Claims

1. A pump-type dispenser comprising: a cap attached to the mouth of a container that holds liquid contents; a pump located inside the mouth and held in place by the cap, driven by the movement of a stem; and a head having a discharge port for discharging the liquid contents to the outside and connected to the stem, wherein the liquid contents in the container are discharged from the discharge port by moving the head along the central axis of the stem, The pump has a first elastic piece extending upward, The cap has a second elastic piece that is located further away from the central axis than the first elastic piece and extends upward, A pump-type discharger, wherein the stem or head has a pressing portion that contacts the first elastic piece and the second elastic piece, and when the head is pressed, it elastically deforms the first elastic piece toward the central axis and the second elastic piece toward the central axis.

2. The pump has a flange portion located above the opening when installed, and a base portion located below the flange portion. The pump-type discharger according to claim 1, wherein the first elastic piece extends upward from the base portion.

3. The pump-type discharger according to claim 1, wherein the second elastic pieces are provided in multiple quantities at intervals in a direction circumferential to the central axis, and the number of second elastic pieces is greater than the number of first elastic pieces.

4. The pump-type discharger according to claim 1, wherein the pressing portion has a holding portion held by the stem or the head, a downward inclined portion extending downward from the holding portion in a direction away from the central axis and in contact with the first elastic piece, and an upward inclined portion extending upward from the downward inclined portion in a direction away from the central axis and in contact with the second elastic piece.

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