Pump type dispenser

Abstract

To provide a pump type discharger capable of reducing the elastic force of an elastic body formed of a soft material with a simple structure.SOLUTION: The pump-type dispenser 100 includes the elastic body 5 formed of a soft material and having the support portion 5a supported by the pump 1, the deformable portion 5b elastically deformable in the vertical direction, and the upward hook 5b provided at the lower end of the deformable portion 5c, the band 4f provided on the head 4 and held by the holder 3 in a state in which the head 4 is moved to the lower end position to prevent the head 4 from moving upward, and the downward hook 5c provided on the stem 14 and engageable with the upward hook 14b. 4f, the downward hook 14b is positioned below the upward hook 5c, and the downward hook 4f is engaged with the upward hook 14b in a state where the band 5c is removed from the head 4 and the head 4 is moved from the lower end position to the upper end position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pump-type dispenser. [Background technology]

[0002] A known pump-type dispenser includes a cap that is attached to the mouth of a container, a pump that is held at the mouth by the cap and is driven by the up and down movement of a stem, and a head that is attached to the stem; the liquid contents in the container are dispensed from the discharge port of the head by lowering the head.

[0003] As shown in Patent Document 1, a coil spring is provided inside such a pump-type dispenser to return the head, which has been moved toward the cap, to its initial position. Although most of the components of such a pump-type dispenser are made of synthetic resin, the coil spring is made of metal. Therefore, when the dispenser is disposed of after use, it cannot be recycled as a resin product in its current state. Furthermore, in this type of pump-type dispenser, the components are firmly fixed to each other, for example, by fitting, to prevent them from coming apart during normal use. Therefore, it takes time and effort to disassemble the pump-type dispenser and separate the coil spring from the other components.

[0004] In response to this problem, Patent Document 2 discloses a pump-type dispenser that uses a spring body made of synthetic resin, and is configured so that a piston that receives this spring body can be screwed together with the pump stem, so that during distribution, the piston and stem are screwed together so that the spring body remains extended and the head is held at the bottom end position, and when in use, the screwing between the piston and stem is released so that the head remains extended and is positioned at the top end position.

[0005] The pump-type dispenser of Patent Document 2 uses a spring body made of a soft material, such as a relatively soft synthetic resin, which eliminates the need to separate the coil spring when disposing of it and allows it to be reused as a resin product, resulting in excellent recyclability. However, when an elastic member is made of a soft material, leaving it in an elastically deformed state for a long period of time can cause sagging and a decrease in elastic force. Therefore, simply applying an elastic body made of a soft material to a pump-type dispenser can result in the head not returning to its initial height due to the sagging of the elastic body. In contrast, the pump-type dispenser of Patent Document 2 prevents such a decrease in elastic force because the spring body is not essentially elastically deformed even during distribution. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 3378104 [Patent Document 2] Japanese Patent Application Laid-Open No. 3616456 Summary of the Invention [Problem to be solved by the invention]

[0007] On the other hand, the pump-type discharger of Patent Document 2 requires male and female threads on the piston and stem, and also requires a structure that prevents one from rotating relative to the other in order to thread the two together, resulting in a complex structure.

[0008] In view of the above, an object of the present invention is to provide a pump-type dispenser that can reduce the elastic force of an elastic body made of a soft material with a simpler configuration. [Means for solving the problem]

[0009] The present invention relates to a pump-type dispenser that is attached to the opening of a container that contains a liquid content and is used, and includes a pump that is driven by moving a stem up and down, a cap that is attached to the opening and holds the pump at the opening, a holder that is held by the pump above the cap, a head that is attached to the stem and can move up and down together with the stem between an upper end position and a lower end position, and that has a discharge port that discharges the liquid content to the outside, a support part that is supported by the pump, a deformation part that is elastically deformable in the vertical direction, is located inside the pump, and extends downward from the support part, and a lower end of the deformation part a band attached to the head and held by the holder when the head is moved to the lower end position to prevent the head from rising; and a downward hook attached to the stem and engageable with the upward hook, wherein when the band prevents the head from rising, the downward hook is located below the upward hook, and when the band is removed from the head and the head is moved from the lower end position to the upper end position, the downward hook engages with the upward hook. [Effects of the Invention]

[0010] According to the pump-type dispenser of the present invention, it is possible to reduce the elastic force of the elastic body made of a soft material with a simpler configuration. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a half cross-sectional side view of one embodiment of a pump-type dispenser according to the present invention, showing a state in which a band holds a head so that the head cannot be lifted. FIG. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 2 is a view showing the pump-type dispenser shown in FIG. 1 with a band removed from a head. [Figure 4] 4 is a diagram showing a state in which the head is raised after the state shown in FIG. 3 and the downward hooks are engaged with the upward hooks. [Figure 5] FIG. 5 is a diagram showing a state in which the head is pressed down after the state shown in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a pump-type dispenser 100, which is one embodiment of a pump-type dispenser according to the present invention, will be described with reference to the drawings. In this specification and the like, the up-down direction refers to the direction along the illustrated central axis O (the central axis of the stem 14, which will be described later), with the side on which the pipe 13 is located being the "bottom" and the side on which the head 4 is located being the "top." Furthermore, the radial direction refers to a direction perpendicular to the central axis O within a plane perpendicular to the central axis O, and the circumferential direction refers to a direction circumferential around the central axis O within this plane.

[0013] 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 dispensed by the pump-type dispenser 100 include, for example, cosmetics (e.g., emulsion or lotion), shampoo, body soap, hand soap, facial cleanser, various chemicals (e.g., rubbing alcohol), etc.

[0014] In this embodiment, the pump-type dispenser 100 is composed of a pump 1, a cap 2, a holder 3, a head 4, and an elastic body 5. The pump 1 in this embodiment is also composed of a cylinder 11, a first valve member 12, a pipe 13, a stem 14, a piston 15, a second valve member 16, and a gasket 17. The head 4 in this embodiment is equipped with a band 4f, and the stem 14 is equipped with a downward hook 14b. Of the above components, the elastic body 5, the first valve member 12, the piston 15, and the gasket 17 are made of elastic soft materials (e.g., synthetic rubbers such as silicone rubber and nitrile rubber, or soft synthetic resins such as polyethylene (LDPE, HDPE, and foamed PE)). The other components are made of hard synthetic resins (e.g., polypropylene (PP), polybutylene terephthalate (PBT), polyacetal (POM), and polyketone (POK) resin). Each component of the pump-type dispenser 100 is essentially shaped around a central axis O.

[0015] The cylinder 11 has a disk-shaped bottom wall portion 11a with a central portion protruding upward. A cylindrical tube wall portion 11b extending upward is provided on the outer edge of the bottom wall portion 11a. An upper tube wall portion 11c extending radially outward and then upward is provided on the outer peripheral surface of the upper portion of the tube wall portion 11b. A flange wall 11d extending radially outward is provided on the outer peripheral surface of the upper tube wall portion 11c. A through-hole (suction port 11e) is provided in the protruding central portion of the bottom wall portion 11a. A cylindrical holding tube 11f is provided on the underside of the bottom wall portion 11a, extending downward to surround the suction port 11e and holding the pipe 13. A through-hole (vent hole 11g) is provided in the tube wall portion 11b.

[0016] The first valve member 12 includes a base 12a. The base 12a is generally cylindrical and has an opening (not shown) through which the liquid content passes after passing through the suction port 11e. The outer circumferential surface of the base 12a is fitted and held against the inner circumferential surface of the cylindrical wall 11b, thereby holding the first valve member 12 within the cylinder 11. Inside the base 12a, a plate-shaped valve body 12b is provided. The valve body 12b covers the suction port 11e and is seated on the upper surface of the bottom wall 11a. An elastically deformable connecting piece 12c is provided between the base 12a and the valve body 12b, connecting the base 12a and the valve body 12b. The first valve member 12 functions as a check valve. When the pressure inside the cylinder 11 is reduced, the valve body 12b, which had been closing the suction port 11e, moves away from the bottom wall 11a, thereby opening the suction port 11e.

[0017] The pipe 13 is hollow, and its upper end is inserted into and fitted into the holding cylinder 11f.

[0018] The stem 14 is a member having a generally cylindrical shape, and in this embodiment is formed in a cylindrical shape. The inner circumferential surface of the stem 14 is provided with a valve seat portion 14a that tapers downward and has an opening in the center.

[0019] Furthermore, the stem 14 of this embodiment is provided with downward hooks 14b integrally on its outer circumferential surface. The downward hooks 14b of this embodiment are composed of a connecting portion 14c extending radially outward from the outer circumferential surface of the stem 14 and a downward engaging portion 14d extending downward from the connecting portion 14c with a gap between them and the outer circumferential surface of the stem 14. In this embodiment, the connecting portion 14c is disk-shaped, and the downward engaging portion 14d is cylindrical, and the downward hooks 14b are provided around the entire circumferential surface of the stem 14. Note that the downward hooks 14b may be provided on a portion of the outer circumferential surface of the stem 14 (multiple downward hooks may be arranged intermittently in the circumferential direction, or only one downward hook may be arranged).

[0020] The stem 14 also has an inclined portion 14e located above the connecting portion 14c, which inclines upward toward the central axis O. In this embodiment, the inclined portion 14e is provided on a portion of the outer circumferential surface of the stem 14 in the circumferential direction, but it may also be provided on the entire outer circumferential surface of the stem 14 in the circumferential direction.

[0021] The piston 15 is cylindrical and has a connecting cylindrical portion 15a whose upper portion is inserted into and fitted and held by the stem 14. A sliding piece 15b is provided at the lower end of the connecting cylindrical portion 15a, which extends radially outward and then upward and downward. The sliding piece 15b slidably and liquid-tightly contacts the inner circumferential surface of the cylindrical wall portion 11b.

[0022] In this embodiment, the second valve member 16 is spherical and is disposed inside the stem 14. The second valve member 16 is movable inside the stem 14, and when moved downward as shown in Figure 1, it seats on the upper surface of the valve seat 14a and closes an opening provided in the center of the valve seat 14a.

[0023] The packing 17 is in the shape of an annular plate and is inserted into and fitted into the upper cylindrical wall portion 11c of the cylinder 11. When the pump-type dispenser 100 is attached to a container (not shown), the packing 17 is sandwiched between the opening of the container and the flange wall 11d. This prevents problems such as the content liquid overflowing from the opening when the container is turned over, for example.

[0024] The cap 2 has a disk-shaped top wall 2a with a through-hole in the center. As shown in the figure, an upper cylindrical wall portion 11c is inserted into the through-hole provided in the center of the top wall 2a. A cylindrical outer peripheral wall 2b extending downward is provided on the outer edge of the top wall 2a. A female thread portion 2c is provided on the inner peripheral surface of the outer peripheral wall 2b. The female thread portion 2c is to be threaded into a male thread portion provided on the opening of a container (not shown).

[0025] The holder 3 has a disk-shaped top wall 3a with a central through-hole. An inner peripheral wall 3b is provided on the underside of the top wall 3a, surrounding the central through-hole. The lower end of the inner peripheral wall 3b is elastically deformable from a downward orientation as shown in FIG. 1 to a radially outward orientation as shown in FIGS. 4 and 5. An intermediate peripheral wall 3c is provided on the underside of the top wall 3a, radially outward from the inner peripheral wall 3b, and an outer peripheral wall 3d is provided radially outward from the intermediate peripheral wall 3c. As shown in FIG. 1, an upper cylindrical wall portion 11c is inserted between the intermediate peripheral wall 3c and the outer peripheral wall 3d, passing through a through-hole in the central portion of the top wall 2a. The upper cylindrical wall portion 11c is fitted and held between the intermediate peripheral wall 3c and the outer peripheral wall 3d. In this state, the cap 2 is rotatable relative to the cylinder 11 and is prevented from coming off by the flange wall 11d and the holder 3. The outer peripheral surface of the outer peripheral wall 3d is provided with a holder engaging portion 3e that extends radially outward and then downward.

[0026] In this embodiment, the head 4 includes a cylindrical portion 4a. The stem 14 is inserted into and fitted into the cylindrical portion 4a, allowing the head 4 to move vertically together with the stem 14. A horizontally extending, disk-shaped head top wall 4b is provided at the top of the cylindrical portion 4a, and a downwardly extending, cylindrical head circumferential wall 4c is provided at the outer edge of the head top wall 4b. A nozzle 4d is provided on the outer periphery of the head circumferential wall 4c, extending radially outward and communicating with a passage provided inside the cylindrical portion 4a. A discharge port 4e through which the content liquid is discharged by the pump-type dispenser 100 is provided at the tip of the nozzle 4d.

[0027] The head 4 of this embodiment also includes a band 4f. In its initial state, the band 4f is cylindrical and has the same diameter as the head circumferential wall portion 4c. The band 4f is located below the head circumferential wall portion 4c, with a gap in the vertical direction from the head circumferential wall portion 4c. As shown in FIGS. 1 and 2, this gap is filled with bridges 4g that are short in the circumferential direction and integrally connect the head circumferential wall portion 4c and the band 4f in a breakable manner. In this embodiment, a total of four bridges 4g are provided at intervals in the circumferential direction. Furthermore, protrusions 4h are provided in this gap. In this embodiment, the lower ends of the protrusions 4h are integrally connected to the band 4f and protrude from the band 4f toward the head circumferential wall portion 4c. The upper ends of the protrusions 4h are separated from the head circumferential wall portion 4c. In this embodiment, a total of four protrusions 4h are provided at intervals in the circumferential direction.

[0028] As shown in FIG. 1, the band 4f is provided with band engagement portions 4j that protrude radially inward from the inner peripheral surface and have a claw-like cross section. The band engagement portions 4j engage with the holder engagement portions 3e as shown in FIG. 1. When the band engagement portions 4j engage with the holder engagement portions 3e, the head 4 is held in a position that prevents it from rising relative to the holder 3. Hereinafter, the position of the head 4 in the state shown in FIG. 1 will be referred to as the "lower end position." Note that, as will be described later, when the holder engagement portions 3e and the band engagement portions 4j are not engaged, the head 4 can rise to the position shown in FIG. 4. Hereinafter, the position of the head 4 in the state shown in FIG. 4 will be referred to as the "upper end position." In this embodiment, the band engagement portions 4j are provided intermittently at intervals in the circumferential direction as shown in FIG. 2.

[0029] As shown in FIG. 2, the band 4f has a thin, breakable weakened portion 4k at one location in the circumferential direction.

[0030] The elastic body 5 integrally comprises a support portion 5a that is supported by the pump 1, a deformation portion 5b that is elastically deformable in the vertical direction and extends downward from the support portion 5a, and an upward hook 5c provided at the lower end of the deformation portion 5b.

[0031] The support portion 5a in this embodiment is composed of a cylindrical support tube portion 5d and a disk-shaped upper connecting portion 5e extending radially inward from the upper end of the support tube portion 5d. When assembled into the pump-type dispenser 100 as shown in Fig. 1, the support tube portion 5d is positioned and held between the outer peripheral surface of the tube wall portion 11b and the inner peripheral surface of the upper tube wall portion 11c, and the upper connecting portion 5e is positioned and held between the upper end surface of the tube wall portion 11b and the lower end surface of the intermediate peripheral wall 3c.

[0032] In this embodiment, the deforming portion 5b is cylindrical and located inside the cylindrical wall portion 11b. When not elastically deformed, the deforming portion 5b has the length shown in Fig. 1, but can be elastically deformed so as to increase in length in the vertical direction as shown in Fig. 5.

[0033] The upward hook 5c of this embodiment is composed of a disk-shaped lower connecting portion 5f extending radially inward from the lower end of the deforming portion 5b, and an upward engaging portion 5g extending upward from the lower connecting portion 5f with a gap between it and the inner circumferential surface of the deforming portion 5b. The upper end of the upward engaging portion 5g is shaped to be inclined toward the central axis O as it extends upward.

[0034] The pump-type dispenser 100 configured with the above components is assembled as shown in Figure 1. Then, the pump-type dispenser 100 can be attached to a container (not shown) by threading the female thread portion 2c into the male thread portion provided in the mouth of the container.

[0035] In the state shown in Figure 1, the downward hook 14b is positioned below the upward hook 5c, and the two are not engaged, and the deformable portion 5b is not elastically deformed. In other words, even if the pump-type dispenser 100 remains in the pre-use state for a long time, the deformable portion 5b will not wear down. Also, in the state shown in Figure 1, the band engaging portion 4j is engaged with the holder engaging portion 3e, and the head 4 is held in a position where it cannot rise relative to the holder 3, so the container with the pump-type dispenser 100 attached can be transported in a compact state.

[0036] In the pump-type dispenser 100 assembled as shown in Figure 1, a force may be applied from above to the head 4, for example, during distribution. If such a force causes the head peripheral wall 4c to approach the band 4f, there is a concern that the bridge 4g provided in the gap between the head peripheral wall 4c and the band 4f may break. However, in this embodiment, a protrusion 4h is provided in this gap, restricting the movement of the head peripheral wall 4c toward the band 4f, thereby effectively preventing the bridge 4g from breaking.

[0037] When starting to use the pump-type dispenser 100, the band 4f is first removed from the head peripheral wall 4c. In this embodiment, the weakened portions 4k shown in FIG. 2 are first broken. Then, by pulling the end of the band 4f formed by the breaking radially outward, the bridges 4g are sequentially broken, allowing the band 4f to be stretched and removed from the head peripheral wall 4c (see FIG. 3), thereby releasing the engagement between the holder engagement portion 3e and the band engagement portion 4j. Incidentally, if the band engagement portion 4j provided on the inner peripheral surface of the band 4f is continuous in the circumferential direction, the thickness of the band 4f increases due to the continuous band engagement portion 4j, making the band 4f less likely to deform. Therefore, when the end of the band 4f is pulled radially outward, a greater force is required to stretch the arc-shaped band 4f into a straight line. On the other hand, in this embodiment, the band engagement portions 4j are arranged intermittently at intervals in the circumferential direction, so the thickness of the band 4f is thin between adjacent band engagement portions 4j, and the band 4f is easily deformed in this area, so the force required to pull the end of the band 4f radially outward can be reduced.

[0038] Thereafter, the head 4 is pulled up as shown in FIG. 4. This also pulls up the stem 14, causing the downward hook 14b to rise, allowing the upward hook 5c to engage with the downward hook 14b. An inclined portion 14e is provided above the downward hook 14b. When the stem 14 is pulled up, the inclined portion 14e pushes the upward hook 5c radially outward, preventing problems such as deformation of the upward hook 5c by the moving downward hook 14b. In the state shown in FIG. 4, the inclined portion 14e is positioned so as to overlap the lower end of the inner peripheral wall 3b in the vertical direction. However, because the lower end of the inner peripheral wall 3b is elastically deformable so as to spread radially outward, the head 4 can be pulled up to the state shown in FIG. 4. Furthermore, since the upper end of the upward engagement portion 5g of the upward hook 5c is inclined as shown in the figure, when engaging the upward hook 5c with the downward hook 14b, it is possible to prevent problems such as the lower end of the downward engagement portion 14d of the downward hook 14b getting caught on the upper end of the upward engagement portion 5g.

[0039] When the head 4 is pressed down, the stem 14 and piston 15 descend together with the head 4, as shown in FIG. 5. At this time, the downward hook 14b presses down on the upward hook 5c, causing the deforming portion 5b to elastically deform so as to extend in length. Therefore, when the pressing force on the head 4 is released, the elastic force generated when the deforming portion 5b returns to its original shape causes the stem 14 and piston 15 to rise together with the head 4. Here, the opening provided in the center of the valve seat portion 14a of the stem 14 is closed by the second valve member 16. Furthermore, as the piston 15 rises, the pressure inside the cylinder 11 is reduced. As a result, the valve body portion 12b moves away from the bottom wall portion 11a, opening the suction port 11e, allowing the liquid contained in the container to be sucked into the cylinder 11 through the pipe 13.

[0040] When the head 4 is pressed down again, the piston 15 descending with the head 4 pressurizes the inside of the cylinder 11, causing the liquid content contained in the cylinder 11 to move the second valve member 16 away from the valve seat 14a, pass through the stem 14 and the passage provided inside the cylindrical portion 4a, and then pass through the passage inside the nozzle 4d to be discharged from the discharge port 4e. When the pressure on the head 4 is then released and the piston 15 rises, new liquid content is sucked into the cylinder 11 from the container. Thereafter, by repeatedly pressing and releasing the pressure on the head 4, the liquid content can be repeatedly discharged from the discharge port 4e.

[0041] While one embodiment of the present invention has been described above with reference to the drawings, this embodiment may be modified as follows.

[0042] For example, although the band 4f in this embodiment is provided integrally with the head 4, it may be provided as a separate member from the head 4. The shape and number of each part may be changed as appropriate; for example, the number of bridges 4g and protrusions 4h may be three or less or five or more. The upper end of the protrusion 4h may be integrally connected to the head peripheral wall 4c and may protrude from the head peripheral wall 4c toward the band 4f.

[0043] (Addendum) This specification discloses the following technology in one aspect. Note that the reference numerals described below correspond to the reference numerals in the accompanying drawings, but are presented as examples and are not intended to limit the invention of this application.

[0044] (Technology 1) A pump-type dispenser (100) that is attached to the mouth of a container that contains a liquid, A pump (1) driven by moving a stem (14) up and down; a cap (2) that is attached to the mouth portion to hold the pump (1) at the mouth portion; a holder (3) held on the pump (1) above the cap (2); a head (4) attached to the stem (14) and movable up and down between an upper end position and a lower end position together with the stem (14), the head having a discharge port (4e) for discharging the liquid content to the outside; an elastic body (5) made of a soft material, the elastic body having a support part (5a) supported by the pump (1), a deformable part (5b) that is elastically deformable in the vertical direction and is located inside the pump (1) and extends downward from the support part (5a), and an upward hook (5c) provided at a lower end of the deformable part (5b); a band (4f) provided on the head (4), which is held by the holder (3) when the head (4) is moved to the lower end position, preventing the head (4) from moving upward; a downward hook (14b) provided on the stem (14) and engageable with the upward hook (5c); When the band (4f) prevents the head (4) from rising, the downward hook (14b) is located below the upward hook (5c), A pump-type dispenser (100) in which, when the band (4f) is removed from the head (4) and the head (4) is moved from the lower end position to the upper end position, the downward hook (14b) engages with the upward hook (5c).

[0045] With this technology, when the band is held by the holder and the head is moved to its lowermost position, the downward hooks are positioned below the upward hooks, so they are not engaged, and the deformation portion is not elastically deformed, thereby preventing a decrease in the elastic force of the elastic body. Removing the band from the holder allows the head to be raised, which engages the upward hooks of the elastic body with the downward hooks on the stem, urging the stem upward. In other words, by achieving this state, the head can be automatically returned to its original position after being pressed down to dispense the contents, allowing the device to be used like a conventional pump-type dispenser using an elastic body made of a soft material. If the band remains held by the holder even after the upward and downward hooks are engaged, the head would be held at its lowermost position by the band, maintaining the deformation portion in an elastically deformed state. However, with this technology, the band is removed from the holder when engaging the upward and downward hooks, preventing this problem. Furthermore, using the band described above simplifies the structure compared to when the piston and stem are threadedly connected.

[0046] (Technology 2) The band (4f) is provided below the head (4) with a gap therebetween, The pump-type discharger (100) described in Technology 1 is provided with a bridge (4g) in the gap that ruptures and connects the head (4) and the band (4f) together to hold the band (4f) on the head (4), and a protrusion (4h) that protrudes from either the band (4f) or the bridge (4g) toward the other of the band (4f) and the bridge (4g).

[0047] With this technology, even if force is applied from above to the head with the band attached, the protrusions restrict the movement of the head toward the band, effectively preventing breakage of the bridge.

[0048] (Technology 3) The holder (3) has a holder engaging portion (3e) that protrudes outward from the outer circumferential surface, The band (4f) has a band engaging portion (4j) that protrudes inward from the inner peripheral surface and engages with the holder engaging portion (3e) to hold the head (4) at the lower end position, In the pump-type discharger (100) according to Technical Example 1, the band engagement portions (4j) are provided intermittently at intervals in the circumferential direction on the inner circumferential surface of the band (4f).

[0049] This technology reduces the thickness of the band between adjacent band engagement portions, making it easier for the band to deform in these areas, thereby reducing the amount of force required to remove the band.

[0050] Although one embodiment of the present invention has been described above, the present invention is not limited to this specific embodiment, and unless otherwise limited in the above description, various modifications and variations are possible within the spirit and scope of the present invention as defined in the claims. For example, the configurations of the above-described embodiment may be added or deleted as appropriate, and the configurations of one embodiment may be incorporated into other embodiments. Furthermore, the effects of the above-described embodiment are merely examples of the effects that can be obtained 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 be obtained in addition to the above-described effects. [Explanation of symbols]

[0051] 1: Pump 2: Cap 2a: Ceiling wall 2b: Outer wall 2c: Female thread 3: Holder 3a:Top wall 3b: Inner peripheral wall 3c: Intermediate peripheral wall 3d:Outer peripheral wall 3e: Holder engagement part 4: Head 4a: Cylindrical part 4b: Head top wall 4c: Head peripheral wall 4d: Nozzle 4e:Discharge port 4F: Band 4g:bridge 4h: Protrusion 4j: Band engagement part 4k: Weakened part 5: Elastic body 5a: Support part 5b: Deformation part 5c: Upward hook 5d: Support cylinder part 5e: Upper connecting part 5f: Lower connection part 5g: Upward engagement part 11: Cylinder 11a: Bottom wall part 11b: Cylinder wall part 11c: Upper cylinder wall part 11d: Flange wall 11e: Intake port 11f: Holding tube 11g: Vent 12:First valve member 12a: base 12b: Valve body part 12c: Connecting piece 13: Pipe 14: Stem 14a: Valve seat 14b: Down hook 14c:Connection part 14d: Downward engagement part 14e: Inclined part 15: Piston 15a: Connecting cylinder part 15b: sliding piece 16: Second valve member 17: Packing 100: Pump type dispenser O: Central axis

Claims

1. A pump-type dispenser that is attached to the mouth of a container that contains a liquid content, a pump driven by moving the stem up and down; a cap that fits over the mouth to hold the pump in place; a holder held by the pump above the cap; a head attached to the stem and movable up and down between an upper end position and a lower end position together with the stem, the head having a discharge port for discharging the content liquid to the outside; an elastic body made of a soft material, the elastic body having a support part supported by the pump, a deformable part that is elastically deformable in the vertical direction, is located inside the pump and extends downward from the support part, and has an upward hook provided at a lower end of the deformable part; a band provided on the head, the band being held by the holder when the head is moved to the lower end position, preventing the head from rising; a downward hook provided on the stem and engageable with the upward hook, When the band prevents the head from rising, the downward hook is positioned lower than the upward hook, A pump-type dispenser in which, when the band is removed from the head and the head is moved from the lower end position to the upper end position, the downward hook engages with the upward hook.

2. the band is provided below the head with a gap therebetween, 2. The pump-type dispenser according to claim 1, wherein the gap is provided with a bridge that ruptures and connects the head and the band to hold the band to the head, and a protrusion that protrudes from either the band or the bridge toward the other of the band or the bridge.

3. The holder has a holder engaging portion that protrudes outward from an outer circumferential surface, the band has a band engaging portion that protrudes inward from an inner circumferential surface and engages with the holder engaging portion to hold the head at the lower end position; The pump-type discharger according to claim 1 , wherein the band engaging portions are provided intermittently at intervals in the circumferential direction on the inner circumferential surface of the band.

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