JP5650495B2 - Pump type dispenser - Google Patents

Description

  The present invention relates to a pump-type dispenser that is screwed and fixed to the mouth of a container and can discharge the contents in the container by driving the pump by pushing and restoring the nozzle head, While reducing the number of parts required for the configuration of the pump, it is also intended to suppress contact between the elastic member that urges the nozzle head upward and the contents.

  A pump-type dispenser having a pump suspended by a base cap at a mouth portion of a container and a nozzle head that drives the pump and discharges contents from the discharge port is generally a nozzle head. A threaded portion is provided directly below, and an adapter that fits the threaded portion is disposed on the top of the base cap (see, for example, Patent Document 1). As a result, the nozzle head can be pushed down and engaged with the adapter, so that the nozzle head can be brought into an unused posture when being marketed. In this case, in order to pack the container compactly at the time of transportation, and to display the goods at the storefront and to display in a space-saving manner, the direction of the nozzle with respect to the container must be in a certain fixed direction. Therefore, the adapter is configured to be rotatable with respect to the base cap. When attaching the dispenser to the mouth of the container, keep the nozzle head screwed to the adapter in the desired orientation with respect to the container, and keep only the base cap in this state. By screwing in, the nozzle is fixedly held in a fixed orientation.

JP 9-38539 A

  By the way, due to severe price competition in recent years, there is a demand for cost reduction in the pump type dispenser as described above. However, it is difficult to reduce the number of parts necessary for the configuration while maintaining the necessary functions. There was still room for improvement. On the other hand, the elastic member that urges the nozzle head upward is generally arranged in a cylinder of a pump that cannot avoid contact with the contents as disclosed in Patent Document 1, and therefore, the elastic member. Although materials that do not easily corrode when contacted with the contents are selected, it is more preferable in terms of quality to avoid contact with the contents as much as possible. .

  An object of the present invention relates to a pump-type dispenser attached to a mouth portion of a container, while reducing the number of parts necessary for the configuration of the extractor, and further, an elastic member and contents for urging the nozzle head upward A pump-type dispenser that can suppress the contact is also proposed.

The present invention includes a base cap screwed and fixed to the mouth portion of the container, a pump that is suspended and fixed by the base cap through the mouth portion, and pumps up the contents inside the container, and is connected to the stem of the pump, A pump-type dispenser comprising: a nozzle head that drives the piston of the pump by repeatedly pushing and returning the stem to suck, pressurize, and pump the contents in the container and discharge the contents to the outside. Because
The base cap is provided with an adapter for detachably engaging with the base cap and detachably engaging with the nozzle head to hold the nozzle head,
The adapter surrounds the outer wall of the stem at an interval, and the lower end of the nozzle head is brought into contact with the upper part of the piston in a state where the nozzle head can be pushed in to prevent the intrusion of contents and the piston. Form a peripheral wall that acts as an upper stopper,
An elastic member is disposed between the outer wall of the stem and the peripheral wall to urge the stem upward together with the nozzle head ,
The base cap and the adapter are integrally connected to each other at the boundary between the base cap and the adapter, but a thin portion that enables tearing by relative rotation of the base cap and the adapter is provided . This is a pump type dispenser.

The present invention also includes a base cap screwed and fixed to the mouth of the container, a pump that is suspended and fixed by the base cap through the mouth and pumps up the contents inside the container, and is connected to the stem of the pump. A pump-type dispenser comprising: a nozzle head for driving the piston of the pump by repeatedly pushing and returning the stem to suck, pressurize and pump the contents in the container to discharge the contents to the outside A vessel,
The base cap is provided with an adapter for detachably engaging with the base cap and detachably engaging with the nozzle head to hold the nozzle head,
The adapter surrounds the outer wall of the stem at an interval, and the lower end of the nozzle head is brought into contact with the upper part of the piston in a state where the nozzle head can be pushed in to prevent the intrusion of contents and the piston. Form a peripheral wall that acts as an upper stopper,
An elastic member is disposed between the outer wall of the stem and the peripheral wall to urge the stem upward together with the nozzle head,
The peripheral wall includes a peripheral wall main body that forms an annular space with the outer wall of the stem, and a small-diameter cylindrical body that forms a step directly below the peripheral wall main body and integrally connects to form a seat portion of the elastic member. This is a pump type dispenser .

  Since the adapter that engages with the nozzle head is integrally connected to the base cap so as to be separable, the number of parts can be reduced, and the number of molds required for manufacturing parts can be reduced accordingly. On the other hand, when this pump-type dispenser is attached to the mouth of the container, the adapter and the base cap can be separated by relative rotation, which impairs the functions required of the dispenser. Without any problem, the nozzle can be fixed to the container with the intended orientation. In addition, the adapter surrounds the outer wall of the pump stem with a space, and is provided with a peripheral wall that serves as an upper stopper of the piston in a posture in which the nozzle head can be pushed in, and the outer wall of the stem and the peripheral wall of the adapter Since the elastic member that urges the nozzle head upward is disposed between them, the contact between the contents and the elastic member can be avoided without adding a new cover.

  In the case where a thin wall portion that can be torn off by the relative rotation is provided at the boundary between the base cap and the adapter, the separation work of the two members can be easily performed.

  A peripheral wall body that forms an annular space between the peripheral wall provided on the adapter and the outer wall of the stem, and a small-diameter cylinder that forms a step directly under the peripheral wall body and is integrally connected to form a seat portion of the elastic member When configured with a body, the contents are less likely to flow into the annular space, so that the contact between the contents and the elastic member can be avoided more reliably. Further, it is not necessary to separately provide a member for forming a seat portion for receiving the elastic member, and the structure can be simplified.

FIG. 4 is a view showing a posture in a pushable state in which the nozzle head is raised to the uppermost end during normal use according to the embodiment of the pump-type dispenser according to the present invention, and the right half of the pump axis is shown in cross section It is a side view. In the pump type extractor shown in FIG. 1, it is a figure which shows the attitude | position in the unused state which engaged the nozzle head with the adapter. In the pump type extractor shown in FIG. 1, it is a figure which shows the attitude | position of the state which pushed in the nozzle head to the lowest end at the time of normal use.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a view showing a posture in a pushable state in which an embodiment of a pump-type dispenser according to the present invention has a nozzle head raised to the uppermost end during normal use. FIG. 2 is a side view showing a section, and FIG. 2 is a view showing a posture in an unused state in which the nozzle head is engaged with an adapter in the pump-type dispenser shown in FIG. 1, and FIG. It is a figure which shows the attitude | position of the state which pushed the nozzle head to the lowest end at the time of normal use in the pump type extractor shown in FIG.

In FIG. 1, reference numeral 1 denotes a base cap for fixing a pump type dispenser according to the present invention to a mouth portion of a container (not shown). The base cap 1 includes a top plate 1a having an opening 1a ₁ at the center, a cylinder 1b that hangs down from the outer periphery of the top plate 1a, covers the mouth of the container, and is formed inside the cylinder 1b. It has the screw part 1c screwed to the part.

Reference numeral 2 denotes an adapter that detachably engages a nozzle head, which will be described later, and maintains the posture of the nozzle head in an unused state. The adapter 2, which has provided a large-diameter flange 2b at the bottom of the small diameter cylindrical body 2a, to the upper inner wall surface of the cylindrical body 2a, is provided threaded portion n ₁ for detachably engaging the nozzle head A claw portion 2c is formed on the back surface of the flange 2b. The adapter 2, connects the edge and the edge of the opening 1a ₁ of the flange 2b to each other, are integrally connected to the base cap 1. And when connecting both edge parts mutually via a thin part, the base cap 1 and the adapter 2 can be separated by tearing along this thin part (scheduled fracture line l). Here, the thin-walled portion is not limited to the case where the thin-walled pieces are provided at intervals in the circumferential direction as shown in the drawing (a gap is formed between the thin-walled pieces), and the thin-walled portion extends over the entire periphery of the edge portion. It may be connected.

3 is a pump that pumps up the contents inside the container. Pump 3 has a cylinder 3a of the tubular shape which is the outer peripheral wall, the upper part of the cylinder 3a, the flange 3a ₁ is integrally connected. The flange 3a ₁ is sandwiched between the mouth portion of the container and the top plate 1a, so that the pump 3 can be suspended and fixed through the mouth portion of the container. More upper flange 3a _1, is formed with pawl portions 3a ₂ to be engaged with the claw portion 2c, the claw portion 3a ₂ are those in which a plurality spaced around the axis line M of the pump, or It can be an annular one about the axis M. Thus, the adapter 2 is held so as to be rotatable about the axis M and is prevented from coming off upward. Also, an outside air introduction hole 3a ₃ is formed in the upper part of the outer peripheral wall of the cylinder 3a to prevent the inside of the container from becoming negative pressure when a piston described later moves up and down (pressing down and returning).

  The pump 3 is connected to the suction port of the cylinder 3a to introduce the contents in the container into the cylinder 3a, the check valve 3c that opens the suction port only when the contents are sucked, and the inside of the cylinder 3a. An annular piston 3d that sucks, pressurizes, and pumps the contents by sliding in contact with the wall; and a valve plunger 3e that feeds the contents sucked, pressurized, and pumped by the piston 3d through the inside thereof; A stem 3f that surrounds and erects the valve plunger 3e and feeds the contents from the valve plunger 3e to a nozzle head, which will be described later, and an elastic member S that is disposed radially outside the outer wall of the stem 3f. ing.

Valve plunger 3e includes a bottomed tubular body 3e ₁ for inserting the central portion of the bore of the piston 3d, together with the coupling to the side wall integral with the bottomed tubular body 3e ₁ in below the piston 3d, radially outward The wall 3e ₃ extending radially outward with the step 3e ₂ and the vertical rib 3e ₄ extending from the edge of the wall 3e ₃ to the inner wall of the cylinder 3a and spaced in the circumferential direction If, provided in the side wall of the bottomed tubular body 3e _1, the contents of the cylinder 3a that flows from the gap between the mutual longitudinal ribs 3e ₄ and a inflow hole 3e ₅ to be introduced into the inside of the valve plunger 3e Yes.

Stem 3f is cylindrical, and is associated with the engagement portion 3e ₆ provided with the engaging portion 3f ₁ provided on its inner wall to the outer wall of the valve plunger 3e. The lower stem 3f includes a lower cylinder 3f ₂ to form an annular space therebetween with the outer wall of the bottomed tubular body 3e ₁ by expanded inner wall.

Here the adapter 2 is provided with a peripheral wall 2d which extends toward the lower end of the cylindrical body 2a downward peripheral wall 2d includes a peripheral wall body 2d ₁ to be slightly smaller than the inner diameter of the cylindrical body 2a, the peripheral wall body 2d ₁ A small-diameter cylindrical body 2d ₂ is formed directly below and connected to form a step. The elastic member S includes a cylindrical body 2a and the peripheral wall body 2d _1, is disposed in an annular space formed therebetween the stem 3f, the upper end of the elastic member S is formed in an upper portion of the outer wall of the stem 3f The lower end of the elastic member S is in contact with the step 3f ₃ and the lower end of the elastic member S is in contact with the seat 2d ₃ provided on the small-diameter cylindrical body 2d ₂ to constantly apply an upward biasing force to the stem 3f.

Piston 3d has an upper inner wall 3d ₁ and the upper outer wall 3d ₂ comprising respectively an annular at the top, has a lower inner side wall 3d ₃ and the lower outer wall 3d ₄ as the respective annular in lower. Here, since the upper inner side wall 3d ₁ is in contact with the lower cylindrical body 3f ₂ of the stem 3f while the stem 3f is moving, it is possible to suppress the flow of the contents into the elastic member S. The lower inner side wall 3d ₃ is in contact with the step 3e ₂ of the valve plunger 3e, and the contents in the valve plunger 3e can be prevented from returning into the cylinder 3a. The upper outer wall 3d ₂ and the lower outer wall 3d ₄ are always in contact with the inner wall of the cylinder 3a, and the contents flow between the upper outer wall 3d _{2, the} lower outer wall 3d ₄ and the cylinder 3a. It prevents that. When the is pushed into the stem 3f, the lower end 3f ₄ stem 3f is in contact with an upper inner base of the side wall 3d ₁ piston 3d, it is possible to push down the piston 3d. Furthermore, the lower end 2d _{4 of the} adapter 2 is in contact with the root of the upper outer wall 3d ₂ of the piston 3d in the state where the stem 3f is raised most as shown in FIG. It has a sealing function to prevent objects from flowing in, and also functions as an upper stopper for the piston 3d. Incidentally, as shown on an enlarged scale, a principal part in FIG. 1, the contact between the base of the lower end 2d ₄ and the upper outer wall 3d _2, the stepped portion of the peripheral wall body 2d ₁ and the upper outer wall 3d ₂ is to abut Alternatively, both may abut.

Reference numeral 4 denotes a nozzle head that drives the pump 3 and introduces the contents from the stem 3f into the internal space and ejects the contents toward the outside. The nozzle head 4 includes an operation unit 4a that directly applies a pressing force, a cylinder 4b that is integrally connected to the operation unit 4a and fitted to the stem 3f, and a content that is integrally connected to the cylinder 4b and fed from the stem 3f. and a nozzle 4c forming the discharge port 4c ₁ for ejecting an object in the outside. In addition, a threaded portion n ₂ that matches the threaded portion n ₁ of the adapter ₂ is provided on the outer wall of the cylindrical body 4 b.

A packing 5 is sandwiched between the mouth of the container and the flange 3a _{1 of the} pump 3 when attached to the container, and prevents leakage of the contents. Since the inner diameter of the packing 5 is slightly smaller than the outer diameter of the outer peripheral wall of the cylinder 3a, the packing 5 does not fall off even before being attached to the container.

Pump Note can constructed as described above, before being attached to the mouth portion of the container, as shown in FIG. 2, screwed a threaded portion n ₂ of the nozzle head 4 to the threaded portion n ₁ of the adapter 2 Use an unused posture. Here, when the base cap 1 and the adapter 2 are relatively rotated, tearing occurs along the planned fracture line L, and the base cap 1 and the adapter 2 can be separated. In order to attach to the mouth of the container (not shown), the nozzle head 4 is held in the intended direction with respect to the container, and only the base cap 1 is screwed into the container in this state, so that the nozzle 4c is The base cap 1 can be screwed into the mouth of the container while the adapter 2 is connected, and tearing can be performed in the middle of the screwing. .

In discharging the contents from a pump-type dispenser attached to a container (not shown), the nozzle head 4 is pushed downward from the pushable posture shown in FIG. As you push down the nozzle head 4, can be as shown in FIG. 3, the lower end 3f ₄ stem 3f is in contact with an upper inner base of the side wall 3d ₁ piston 3d, it pushes down the piston 3d. Here, since the lower inner side wall 3d ₃ of the piston 3d is separated from the stepped portion 3e ₂ of the valve plunger 3e, the contents in the cylinder 3a are removed from the gap between the vertical ribs 3e ₄ of the valve plunger 3e. and allowed to flow into the inflow holes 3e ₅ via, it can be discharged from the discharge port 4c _1. At this time, the upper inner wall 3d ₁ piston 3d, since the lower cylinder 3f ₂ stem 3f abuts, thereby preventing the contents from flowing toward the elastic member S exceeds the piston 3d.

On the other hand, even when the nozzle head 4 is returned upward from the position in which the nozzle head 4 is pushed in as shown in FIG. 3, the upper inner wall 3d ₁ of the piston 3d is in contact with the lower cylindrical body 3f ₂ of the stem 3f. As a result, it is possible to effectively prevent the content from flowing beyond the piston 3d. Also even if the content flows therebetween cylinder 3a and stem 3f temporarily exceed piston 3d, the elastic member S includes a cylindrical body 2a and the peripheral wall body 2d ₁ adapter 2, is surrounded by a stem 3f It is on, since the mutual of the small diameter cylinder 2d ₂ and the stem 3f only for very small gap is formed becomes contents are not easily enter, the contents and the elastic member S more reliably Contact can be prevented. The container is overturning in the state shown in FIG. 1, the contents thereof from the outside air introduction hole 3a ₃ is when there is flow into the cylinder 3a, since mutual the peripheral wall 2d and the piston 3d is sealed, The intrusion of contents toward the elastic member S can be effectively prevented.

  According to the present invention, a pump-type dispenser attached to the mouth of a container reduces the number of parts required for the configuration, and further suppresses contact between the elastic member that urges the nozzle head upward and the contents. A new pump-type dispenser that can be used can be provided.

DESCRIPTION OF SYMBOLS 1 Base cap 2 Adapter 2a Cylinder 2b Flange 2c Claw part 2d Circumferential wall 3 Pump 3a Cylinder 3b Suction pipe 3c Check valve 3d Piston 3e Valve plunger 3f Stem 4 Nozzle head 4a Operation part 4b Cylinder 4c Nozzle 5 Packing l Wire S Elastic member

Claims (2)

A base cap screwed to the mouth of the container; a pump fixed by being suspended through the mouth by the base cap; and a pump for pumping up the contents inside the container; And a pump-type dispenser comprising a nozzle head that drives the piston of the pump by repeating the return operation to suck, pressurize, and pump the contents in the container and discharge the contents to the outside,
The base cap is provided with an adapter for detachably engaging with the base cap and detachably engaging with the nozzle head to hold the nozzle head,
The adapter surrounds the outer wall of the stem at an interval, and the lower end of the nozzle head is brought into contact with the upper part of the piston in a state where the nozzle head can be pushed in to prevent the intrusion of contents and the piston. Form a peripheral wall that acts as an upper stopper,
An elastic member is disposed between the outer wall of the stem and the peripheral wall to urge the stem upward together with the nozzle head ,
The base cap and the adapter are integrally connected to each other at the boundary between the base cap and the adapter, but a thin portion that enables tearing by relative rotation of the base cap and the adapter is provided . A pump type dispenser. A base cap screwed to the mouth of the container; a pump fixed by being suspended through the mouth by the base cap; and a pump for pumping up the contents inside the container; And a pump-type dispenser comprising a nozzle head that drives the piston of the pump by repeating the return operation to suck, pressurize, and pump the contents in the container and discharge the contents to the outside,
The base cap is provided with an adapter for detachably engaging with the base cap and detachably engaging with the nozzle head to hold the nozzle head,
The adapter surrounds the outer wall of the stem at an interval, and the lower end of the nozzle head is brought into contact with the upper part of the piston in a state where the nozzle head can be pushed in to prevent the intrusion of contents and the piston. Form a peripheral wall that acts as an upper stopper,
An elastic member is disposed between the outer wall of the stem and the peripheral wall to urge the stem upward together with the nozzle head,
The peripheral wall includes a peripheral wall main body that forms an annular space with the outer wall of the stem, and a small-diameter cylindrical body that forms a step directly below the peripheral wall main body and integrally connects to form a seat portion of the elastic member. The pump type dispenser .

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