Pump dispenser

Abstract

To provide a pump dispenser capable of reducing materials to be used.SOLUTION: A pump dispenser 1 comprises a cylinder 2, a handle 3a, an attachment part 5, a piston 6, an elevating / lowering part 7 that is elevated / lowered together with the piston 6, a pushing-down lever 3b for pushing down the elevating / lowering part 7, and an energization part 8 for generating energizing force of returning to a position before pushing down the elevating / lowering part 7 and the pushing-down lever 3b. The pump dispenser 1 for discharging a content inside a container 4 by elevating / lowering the elevating / lowering part 7 comprises an operation member 3 as a single component comprising the handle 3a, the pushing-down lever 3b, and a connection part 3c at which a front end part of the pushing-down lever 3b is connected to a front end part of the handle 3a. A bent part 8 is formed as the energization part 8 from the front end part of the pushing-down lever 3b to a front end part of the connection part 3c. The bent part 8 generates the energizing force as restoring force when elastic deformation is made by lowering the pushing-down lever 3b, and the pushing-down lever 3b comprises a pushing-up part 9 for pushing up the elevating / lowering part 7 via restoring deformation of the bent part 8.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Background Art A pump dispenser is known which has a cylinder, a handle, an attachment part which is attached to the mouth of a container and holds the handle and the cylinder, a piston which rises and falls by sliding relative to the cylinder, a lifting part which rises and falls with the piston, a push-down lever which presses down the lifting part, and a biasing part which generates a biasing force which returns the lifting part and the push-down lever to their positions before they were pressed, and which dispenses the contents of a container by raising and lowering the lifting part (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-22466 A Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a pump dispenser that can reduce the use of materials. [Means for solving the problem]

[0005] One aspect of the present invention is as follows.

[0006] [1] A cylinder; A handle and a mounting portion that is mounted to a mouth of a container and holds the handle and the cylinder; A piston that moves up and down by sliding relative to the cylinder; A lifting section that moves up and down together with the piston; A push-down lever that pushes down the lifting unit; a biasing portion that generates a biasing force that returns the lifting portion and the depression lever to a position before the depression, A pump dispenser that discharges the content in the container by lifting and lowering the lifting part, an operating member as a single component having the handle, the push lever, and a connecting portion connecting a front end of the push lever to a front end of the handle; a curved portion as the biasing portion is formed from the front end portion of the pressing lever to a front end portion of the connecting portion, the bent portion is elastically deformed by the downward movement of the pressing lever, thereby generating the biasing force as a restoring force; The push-down lever has a push-up portion that pushes up the lifting portion by restoring deformation of the bent portion.

[0007] [2] the depression lever has an operating portion that receives a depression operation, an upper rail portion that extends from a front end portion of the operating portion to the bent portion, and a lower rail portion that extends parallel to the upper rail portion, the lifting section has a sliding section slidably held between the upper rail section and the lower rail section, the upper rail portion constitutes a push-down portion that pushes down the lifting portion via the sliding portion, The pump dispenser according to [1], wherein the lower rail portion constitutes the pushing portion that pushes up the lifting portion via the sliding portion.

[0008] [3] The pump dispenser described in [2], wherein the curved portion has an upper rail support portion extending from the lower end of the upper rail portion to the lower end of the curved portion, and a lower rail support portion extending from the lower end of the lower rail portion to the lower end of the curved portion parallel to the upper rail support portion. Effect of the Invention

[0009] According to the present invention, it is possible to provide a pump dispenser that can reduce the amount of material used. [Brief description of the drawings]

[0010] [Figure 1] 1 is a cross-sectional view showing a dispensing container having a pump dispenser according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of the discharge container shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0012] As shown in FIGS. 1 and 2, in one embodiment of the present invention, a pump dispenser 1 includes a cylinder 2, a handle 3a, an attachment portion 5 that is attached to an opening portion 4a of a container 4 and holds the handle 3a and the cylinder 2, a piston 6 that slides up and down relative to the cylinder 2, a lifting portion 7 that lifts and lowers with the piston 6, a push-down lever 3b that pushes down the lifting portion 7, and a biasing portion 8 that generates a biasing force that returns the lifting portion 7 and the push-down lever 3b to their positions before being pushed down. The lifting and lowering of the lifting portion 7 causes the contents in the container 4 to be dispensed. The pump dispenser 1 has an operating member 3 as a single component having a handle 3a, a push-down lever 3b, and a connecting portion 3c that connects the front end of the push-down lever 3b to the front end of the handle 3a, and a curved portion 8 as a biasing portion 8 is formed from the front end of the push-down lever 3b to the front end of the connecting portion 3c, and the curved portion 8 is elastically deformed by the downward movement of the push-down lever 3b to generate a biasing force as a restoring force, and the push-down lever 3b has a push-up portion 9 that pushes up the lift-up portion 7 by the restoring deformation of the curved portion 8. In this embodiment, the direction along the central axis O of the cylinder 2 is referred to as the up-down direction, the direction in which the lift-up portion 7 descends along the up-down direction is referred to as the down direction, and the opposite direction is referred to as the up direction.

[0013] According to the above configuration, the handle 3a, the push lever 3b, and the biasing portion 8 can be configured as a single part, so that the amount of material used can be reduced. In particular, by making the single part from resin and using no metal spring, it is possible to easily realize a pump dispenser 1 made entirely from resin, which has excellent recyclability. For example, the pump dispenser 1 can be made entirely from olefin-based resin, in which case it can be made from a single resin such as PE (polyethylene) or PP (polypropylene). The pump dispenser 1 can also be made from a single resin such as POM (polyoxymethylene) or POK (polyketone).

[0014] The push-down lever 3b has an operating section 10 that receives a push-down operation, an upper rail section 11 that extends from the front end of the operating section 10 to the bent section 8, and a lower rail section 9 that extends parallel to the upper rail section 11, and the lifting section 7 has a sliding section 7a that is slidably held between the upper rail section 11 and the lower rail section 9, and the upper rail section 11 constitutes the push-down section 11 that pushes down the lifting section 7 via the sliding section 7a, and the lower rail section 9 constitutes the push-up section 9 that pushes up the lifting section 7 via the sliding section 7a. With the above configuration, the push-down section 11 and the push-up section 9 can stably push down and push up the lifting section 7.

[0015] The curved portion 8 has an upper rail support portion 12 extending from the lower end of the upper rail portion 11 to the lower end of the curved portion 8, and a lower rail support portion 13 extending from the lower end of the lower rail portion 9 to the lower end of the curved portion 8 in parallel with the upper rail support portion 12. With the above configuration, an efficient reduction in material can be achieved while ensuring the biasing force of the biasing portion 8.

[0016] The lifting unit 7 has an internal flow path 7b and a discharge port 7c, and discharges the contents in the container 4 from the discharge port 7c through the internal flow path 7b. More specifically, the lifting unit 7 has a piston holding member 14 having a stem portion 14a, and a nozzle head 15 attached to the stem portion 14a, and the nozzle head 15 has a convex sliding portion 7a that protrudes laterally. With the above configuration, the lifting unit 7 can be realized with a simple structure.

[0017] The mounting part 5 has an annular restricting member 5a that is attached to the upper end of the cylinder 2 and restricts the holding member from being pulled out upward from the cylinder 2, and the connecting part 3c has a through hole part 3c1 that forms a through hole through which the restricting member 5a passes and is fitted into and held by the restricting member 5a. According to the above configuration, the handle 3a can be held by the mounting part 5 with a simple structure.

[0018] The mounting portion 5 has a mounting cap 5b having a top wall 5b1 that forms a through hole in the center through which the regulating member 5a passes and a peripheral wall 5b2 that hangs down from the outer periphery of the top wall 5b1, and the mounting cap 5b is mounted to the mouth portion 4a by sandwiching the flange 16 that protrudes radially outward from the upper end of the cylinder 2 between the upper end surface of the mouth portion 4a and the lower surface of the top wall 5b1 and attaching the peripheral wall 5b2 to the outer periphery of the mouth portion 4a, and the connecting portion 3c can overcome the restricting protrusion 5a1 that protrudes radially outward from the restricting member 5a downward by elastic deformation, and the upward movement is restricted by abutment against the restricting protrusion 5a1, and the downward movement is restricted by abutment against the upper surface of the top wall 5b1. With the above configuration, the connecting portion 3c can be easily assembled to the mounting portion 5.

[0019] The handle 3a extends obliquely downward from the front end to the rear end, and the push-down lever 3b extends obliquely upward from the front end to the rear end. With the above configuration, good operability can be achieved when gripping the handle 3a and pushing down the push-down lever 3b with the thumb.

[0020] The pump dispenser 1 has a pair of left and right sliding parts 7a, an upper rail part 11, a lower rail part 9, an upper rail support part 12, and a lower rail support part 13. According to the above configuration, it is possible to easily realize stable operation of the lifting part 7. In this embodiment, the pair of left and right upper rail support parts 12 are integrally connected to each other at the part extending upward from the lower end of the bent part 8, thereby adjusting the rigidity.

[0021] The operating member 3 has a pair of left and right side wall portions 3d that are connected to the lower rail support portion 13 and extend from the lower end of the curved portion 8 to the rear end of the handle 3a, and a bottom wall portion 3e that connects the lower ends of the pair of left and right side wall portions 3d from the lower end of the curved portion 8 to the rear end of the handle 3a. According to the above configuration, it is possible to efficiently reduce the material while ensuring the biasing force of the biasing portion 8 and the rigidity of the handle 3a and the connecting portion 3c.

[0022] In this embodiment, the discharge container 17 has a pump dispenser 1 and a container 4. The container 4 has a body 4b that forms an internal space 4c that contains the contents, and a mouth 4a that forms an opening that communicates with the internal space 4c and is connected to the body 4b. The container 4 is, for example, bottle-shaped. The contents are not particularly limited, and are, for example, liquid. The pump dispenser 1 discharges the contents from the internal space 4c through the pump chamber 18 formed by the cylinder 2 and the piston 6 and the internal flow path 7b in this order from the discharge port 7c by the elevation part 7 rising and falling.

[0023] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and the above-described embodiment can be modified in various ways without departing from the gist of the present invention. [Explanation of symbols]

[0024] 1 Pump dispenser 2 Cylinder 3 Operation parts 3a Handle 3b Depress lever 3c Connecting part 3c1 Through hole part 3d side wall 3e Bottom wall 4 containers 4a Mouth 4b Torso 4c interior space 5. Mounting part 5a Regulatory member 5a1 Regulatory convexity 5b Mounting cap 5b1 Top wall 5b2 Surrounding wall 6 Piston 7 Lifting section 7a Sliding part 7b Internal flow path 7c outlet 8 Bending section (biasing section) 9 Lower rail section (push section) 10 Control section 11 Upper rail part (push part) 12 Upper rail support 13 Lower rail support 14 Piston retaining member 14a Stem 15 Nozzle Head 16 Flange 17 Discharge container 18 Pump Room O center axis

Claims

1. A cylinder; A handle and a mounting portion that is mounted to a mouth of a container and holds the handle and the cylinder; A piston that moves up and down by sliding relative to the cylinder; A lifting section that moves up and down together with the piston; A push-down lever that pushes down the lifting unit; a biasing portion that generates a biasing force that returns the lifting portion and the depression lever to a position before the depression, A pump dispenser that discharges the content in the container by lifting and lowering the lifting part, an operating member as a single component having the handle, the push lever, and a connecting portion connecting a front end of the push lever to a front end of the handle; a curved portion as the biasing portion is formed from the front end portion of the pressing lever to a front end portion of the connecting portion, the bent portion is elastically deformed by the downward movement of the pressing lever, thereby generating the biasing force as a restoring force; The push-down lever has a push-up portion that pushes up the lifting portion by restoring deformation of the bent portion.

2. the depression lever has an operating portion that receives a depression operation, an upper rail portion that extends from a front end portion of the operating portion to the bent portion, and a lower rail portion that extends parallel to the upper rail portion, the lifting section has a sliding section slidably held between the upper rail section and the lower rail section, the upper rail portion constitutes a push-down portion that pushes down the lifting portion via the sliding portion, The pump dispenser according to claim 1 , wherein the lower rail portion constitutes the pushing portion that pushes up the lifting portion via the sliding portion.

3. The pump dispenser of claim 2, wherein the curved portion has an upper rail support portion extending from the lower end of the upper rail portion to the lower end of the curved portion, and a lower rail support portion extending from the lower end of the lower rail portion to the lower end of the curved portion parallel to the upper rail support portion.

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