JP2021160755A - Discharger device for liquid container - Google Patents

Abstract

To provide a discharge device for a liquid container which enables sorted disposal with easy operation.SOLUTION: An operation member 26 is attached to an interior of a cylinder 10 for insertion into a container body in a manner that the operation member 26 can move up or down. A coil spring c for upward biasing is separably attached to a lower part 28 of the operation member 26. An annular auxiliary cap 40 which restricts a range of upper movement of the operation member 26 is provided. The auxiliary cap 40 has: an assembly cylinder 42 assembled to an upper peripheral wall 16; and a connection cylinder 48 which is erected upward with respect to the assembly cylinder 42 and separably connected to a discharge head 34. The upper peripheral wall 16 of the cylinder 10 and the assembly cylinder 42 are threadedly engaged through a main screw part S1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a discharger for a liquid container.

As a conventional discharger, a cylinder is vertically hung from a mounting cap that can be fitted to the mouth and neck of the container body, and the lower part of an operating member having a discharge head can be raised and lowered in this cylinder and is moved upward by a coil spring. It is known that an auxiliary cap, which is a means for retaining a working member, is urged and inserted into the upper end of the cylinder (Patent Document 1).
The auxiliary cap has a fitting cylinder fitted to the outer surface of the upper end portion of the cylinder, and an uneven strip (undercut) that meshes with each other on a facing surface between the fitting cylinder and the upper end portion of the cylinder. Are provided respectively. Then, a plug-in cylinder that regulates the ascending range of the lower part of the operating member is hung down inside the cylinder so as to be connected to the upper end of the fitting cylinder.

JP-A-2019-177939

In recent years, from the viewpoint of environmental problems, when the content liquid in the container equipped with the discharger is used up, it is required to separate and dispose of each material. For example, if a metal coil spring is used in the discharger, it is desirable to separate it from the remaining parts and dispose of it.
However, in the discharger of Patent Document 1, since the auxiliary cap is plugged at the upper end of the cylinder, it is not easy to separate the coil springs.

An object of the present invention is to provide a discharger for a liquid container that can be separated and disposed of by a simple operation.

The first means is a cylinder 10 for insertion into the container body and
An operating member 26 that is vertically mounted in the cylinder 10 and has a discharge head 34 attached to a stem 30 that stands up from the inside of the cylinder 10.
A coil spring c that is separably attached to the lower portion 28 of the operating member 26 and urges the operating member 26 upward.
An annular auxiliary cap 40, which is assembled to the upper peripheral wall 16 which is the upper end of the cylinder 10 and regulates the range of upward movement of the operating member 26,
Equipped with
The auxiliary cap 40 has an assembling cylinder 42 assembled to the upper peripheral wall 16 and a connecting cylinder 48 that stands above the assembling cylinder 42 and is separably connected to the discharge head 34. And
A liquid provided so that the liquid in the container is sucked into the cylinder and pumped to the discharge head by moving the discharge head 34 up and down with respect to the cylinder 10 in a state where the connecting cylinder 48 is separated from the discharge head 34. It is a discharger for containers,
The upper peripheral wall 16 of the cylinder 10 and the assembly cylinder 42 are screwed together via the main screw portion S1.

As shown in FIG. 1, the present means is provided with an annular auxiliary cap 40 that regulates the range of upward movement of the operating member 26 that is vertically mounted in the cylinder 10.
The auxiliary cap 40 has an assembling cylinder 42 assembled to the upper peripheral wall 16 of the cylinder 10 and a connecting cylinder 48 that stands above the assembling cylinder 42 and is separably connected to the discharge head 34. ..
The assembly cylinder 42 is screwed to the upper peripheral wall 16 via the main screw portion S1.
According to this structure, the assembly cylinder 42 is screwed off from the upper peripheral wall 16 and the operating member 26 is pulled out from the cylinder 10, so that the coil spring c separably attached to the lower portion 28 of the operating member 26 can be easily attached. It can be sorted and discarded.

The second means has the first means, and the connecting cylinder 48 is screwed to the discharge head 34 via the auxiliary screw portion S2, and at the same time.
One of the secondary screw portion S2 and the main screw portion S1 is formed as a positive screw, and the other is formed as a reverse screw.

In this means, the connecting cylinder 48 is screwed to the discharge head 34 via the sub-screw portion S2, and as shown in FIG. 3A, one of the sub-screw portion S2 and the main screw portion S1 is a positive screw. The other is formed into a reverse screw.
According to this structure, when the discharge head 34 is screwed off from the connecting cylinder 48 of the auxiliary cap 40, the screw between the assembly cylinder 42 and the upper peripheral wall 16 is not loosened.

The third means has a first means or a second means, and the cylinder 10 is vertically hung from a tubular mounting cap 2 that can be mounted on the mouth and neck of the container body.
A break line 52 is provided around the outward flange 45 protruding outward from the upper end of the assembly cylinder 42, and a sealing cylinder 50B surrounding the assembly cylinder 42 is hung from the peripheral end of the outward flange 45. The lower end of the sealing cylinder 50B is brought close to the upper surface of the mounting cap 2.

In this means, as shown in FIG. 5, an outward flange 45 is projected from the upper end of the assembling cylinder 42, a break line 52 is provided around the outward flange 45, and the outer peripheral end of the outward flange 45 is formed. A sealing cylinder 50B surrounding the assembly cylinder 42 is hung down.
The cylinder 10 hangs down from a mounting cap 2 that can be fitted to the mouth neck 102 of the container body, and the lower end of the sealing cylinder 50B is brought close to the upper surface of the mounting cap 2.
According to this structure, the assembling cylinder 42 can be rotated and screwed out from the upper peripheral wall 16 only after the breaking line 52 is broken by rotating the sealing cylinder 50B.
Therefore, the function of suppressing unauthorized opening can be exerted.

According to the invention according to the first means, an auxiliary cap 40 for restricting the upward movement of the operating member 26 mounted in the cylinder 10 is assembled to the upper peripheral wall 16 of the cylinder 10, and this assembly is attached to the auxiliary cap. Since the assembly cylinder 42 of the 40 and the upper peripheral wall 16 are screwed together via the main screw portion S1, the assembling cylinder 42 is screwed off from the upper peripheral wall 16 and the operating member 26 is screwed out from the inside of the cylinder 10. By pulling out the coil spring c, which is separably attached to the lower portion 28 of the operating member 26, the coil spring c can be easily separated and discarded.
According to the invention according to the second means, the connecting cylinder 48 is screwed to the discharge head 34 via the sub-screw portion S2, and one of the sub-screw portion S2 and the main screw portion S1 is a positive screw and the other is reversed. Since the screws are used, the screw of the main screw portion S1 does not loosen when the discharge head 34 is screwed off from the connecting cylinder 48.
According to the invention according to the third means, the breaking line 52 is provided around the outward flange 45 protruding from the upper end of the assembling cylinder 42, and the sealing cylinder 42 is surrounded from the outer peripheral end of the outward flange 45. Since the cylinder 50B is hung down, an unauthorized opening suppression function can be obtained.

It is sectional drawing of the discharger for a liquid container which concerns on 1st Embodiment of this invention. It is an enlarged view of the main part of the discharger of FIG. It is explanatory drawing of the operation of the discharger of FIG. 1, FIG. (A) shows the work of screwing a discharge head from an auxiliary cap, and FIG. (B) shows the work of screwing an auxiliary cap from a cylinder. There is. It is explanatory drawing of the work of pulling up the actuating member from a cylinder after screwing off the auxiliary cap of the discharger of FIG. It is sectional drawing of the discharger for a liquid container which concerns on 2nd Embodiment of this invention. FIG. 5 is an explanatory view of the operation of the discharger in FIG. 5, in which FIG. 5A shows the work of removing the sealing cylinder of the auxiliary cap, and FIG. The work to screw off from is shown respectively. It is explanatory drawing of the work of pulling up the actuating member from a cylinder after screwing off the auxiliary cap of the discharger of FIG.

1 to 4 show a discharger for a liquid container according to the first embodiment of the present invention.
As shown in FIG. 1, the liquid container discharger of the present embodiment is formed of a mounting cap 2, a cylinder 10, a valve member 24, an operating member 26, a coil spring c, and an auxiliary cap 40. .. These structures can be modified as appropriate.
In the present invention, the coil spring c is made of a material (for example, metal) different from the material of other members. Other members may be formed of a single material (for example, synthetic resin) in response to the demand for monomaterialization.
First, the basic configuration of the present invention will be briefly described.

As shown in FIG. 2, the mounting cap 2 has a mounting cylinder 4 that can be fitted (screwed in the illustrated example) to the mouth neck 102 of the container body 100, and a ring-shaped top plate 6 is formed from the upper end of the mounting cylinder 4. Protrudes inward.

The cylinder 10 hangs down from the mounting cap 2. The cylinder 10 in the illustrated example has a collar portion 14 attached to the upper end portion of the cylinder peripheral wall 12 (intermediate peripheral wall), and an extension wall portion (upper peripheral wall 16) extends above the collar portion. The flange portion 14 is attached to the lower surface side of the top plate 6.
Further, as shown in FIG. 1, the annular plate portion 19 projects inward from the lower end of the cylinder peripheral wall 12, and the pipe fitting cylinder (lower peripheral wall 20) hangs down from the annular plate portion.
The upper part of the suction pipe 22 is fitted into the pipe fitting cylinder.
A ventilation hole h is opened in the upper part of the cylinder peripheral wall 12.

The valve member 24 has a leg portion 24a fitted to the lower end portion of the cylinder peripheral wall 12, and a valve plate 24b is supported in the leg portion. The valve plate 24b and the annular plate portion 19 form a first check valve V1.
Further, the pedestal 24d stands up from the upper end of the leg portion 24a via the connecting piece 24c.
The connecting piece 24c also serves as a coil spring receiving portion. Specifically, a coil spring c that urges the operating member 26 upward is interposed between the connecting piece 24c and the lower portion of the operating member 26 (piston guide 28 in the illustrated example).

In the present embodiment, the operating member 26 is formed of a piston guide 28, a stem 30, a tubular piston 32, a discharge head 34, and a closing cylinder 36, as shown in FIG. This structure can be changed as appropriate.
The piston guide 28 of the illustrated example has a vertically long main body 28a mounted on the pedestal 24d.
A flange-shaped wall portion 28b projects outward from the lower end of the main body. The upper end of the coil spring c is abutted against the lower surface of the flange-shaped wall portion 28b.
Further, a hanging cylinder portion 28c is vertically hung from the peripheral end of the flange-shaped wall portion 28b, and the upper portion of the coil spring c is detachably attached in the hanging cylinder portion 28c.
The lower part of the stem 30 is fitted to the upper part of the main body 28a. A discharge head 34 is connected to the upper part of the stem 30.
The lower end of the stem 30 is formed in an enlarged diameter portion. A cylindrical piston 32 that slides on the inner surface of the cylinder 10 is loosely fitted between the enlarged diameter portion and the flange-shaped wall portion 28b so as to be able to move up and down.
A second check valve V2 is formed at the lower end of the cylindrical piston 32 and the upper surface of the flange-shaped wall portion 28b.
The discharge head 34 hangs a mounting cylinder portion 34b from the central portion of the top plate 34a, and the mounting cylinder portion 34b is fitted to the upper end portion of the stem 30. Further, the inner cylinder portion 34c surrounding the mounting cylinder portion 34b hangs down from the back surface of the top plate 34a, and the outer cylinder portion 34d hangs down from the peripheral end of the top plate 34a.
The inner cylinder portion 34c is a locking cylinder for fastening to the auxiliary cap 40 when the discharge head 34 is pushed down to the lower limit position. A secondary female screw 35 is formed on the inner surface of the inner cylinder portion 34c.
Further, the inner cylinder portion 34c and the outer cylinder portion 34d are penetrated from the upper end of the mounting cylinder portion 34b, and the nozzle 34e is projected outward from the side.
As shown in FIG. 1, the closing cylinder 36 has a closing portion 36b attached to the lower end of a vertical cylinder portion 36a surrounding the stem 30, and the closing portion is in a pressed state of the operating member, and the closing portion is the ventilation hole h. Is formed to block.

The auxiliary cap 40 is a retaining means that regulates the range of upward movement of the operating member 26.
The auxiliary cap 40 of the present embodiment has an assembly cylinder 42 assembled to the upper peripheral wall 16.
As shown in FIG. 2, a horizontal connecting wall portion 44 is projected inward from the upper end of the assembling cylinder 42, and an insertion cylinder 46 hanging from the inner end of the connecting wall portion 44 to the inside of the upper peripheral wall 16. And a connecting cylinder 48 erected from the inner end are continuously provided.
The connecting cylinder 48 maintains the lowered state of the discharge head by being separably connected to the inner cylinder portion 34c in a state where the discharge head 34 is lowered to the lower limit position.
In the illustrated example, a secondary male screw 49 that meshes with the secondary female screw 35 is formed on the outer surface of the connecting cylinder 48. The secondary female screw 35 and the secondary male screw 49 form the secondary screw portion S2.
Further, the outer peripheral cylinder 50 hangs down from the upper end of the assembly cylinder 42 via the outward flange 45. This outer peripheral cylinder is a cylinder portion located on the outermost side of the auxiliary cap.
The outer peripheral cylinder 50 in the present embodiment has a role as an operation cylinder 50A. That is, the operation cylinder 50A is gripped so that the assembly cylinder 42 can be assembled to the upper peripheral wall 16.
In the illustrated example, the outer surface of the operation cylinder 50A is formed on the uneven surface 54 for finger hooking.

In the configuration so far, when the discharger is used, as shown by an imaginary line in FIG. 1, the discharge head 34 may be rotated in the opening direction after the discharger is attached to the mouth and neck of the container body. Then, the inner cylinder portion 34c is screwed out from the connecting cylinder 48, and the operating member 26 is raised by the upward urging force of the coil spring c.
When the discharge head 34 is pushed down, the first check valve V1 closes and the second check valve V2 opens, and the liquid in the cylinder 10 passes through the second check valve V2 and is discharged from the nozzle 34e. When the push-down is released, the pressure inside the cylinder 10 becomes negative due to the ascent of the operating member 26, the second check valve V2 closes and the first check valve V1 opens, and the liquid in the container body 100 flows into the cylinder 10. Is sucked up.

In the present invention, the assembly cylinder 42 is screwed to the upper peripheral wall 16 of the cylinder 10.
That is, a main male screw 18 is formed on the outer surface of the upper peripheral wall 16, and a main female screw 43 that meshes with the main male screw is formed on the inner surface of the assembling cylinder 42.
The main screw portion S1 formed by the main male screw 18 and the main female screw 43 makes it possible to assemble the auxiliary cap 40 to the cylinder 10.
As in Patent Document 1, in the plug type in which uneven strips are provided on the facing surfaces of the auxiliary cap and the fitting portion of the cylinder and the auxiliary caps are forcibly engaged with each other, it is easy to remove the auxiliary cap from the cylinder from the engaged state. is not it.
In comparison with this, in the present invention, as shown in FIG. 3B, the auxiliary cap 40 can be easily removed from the cylinder 10 by the operation of rotating the auxiliary cap 40 in the opening direction.
Therefore, the coil spring c can be separated from the lower portion 28 of the operating member 26 by removing the auxiliary cap 40 from the cylinder 10 and pulling out the operating member 26 from the cylinder 10 after the contents in the container body 100 are used up. Then, the coil spring c can be separated from the remaining members of the discharger and discarded.
The operation of removing the auxiliary cap 40 from the cylinder 10 can be performed not only in the state shown in FIG. 3 (B) but also in the state in which the discharge head 34 is connected to the auxiliary cap 40 as shown in FIG.

As a preferred embodiment, it is preferable that the direction of the spiral of the main screw portion S1 and the direction of the spiral of the sub screw portion S2 are opposite to each other (see FIG. 3A).
For example, if the secondary screw portion S2 is a positive screw (a screw that tightens when the screw is turned to the right when viewed from the head) and the main screw portion S1 is formed as a reverse screw (a screw that tightens when the screw is turned to the left when viewed from the head). good.
The reason for doing so is that if the directions of the spirals of the main screw portion S1 and the sub screw portion S2 are the same, the main screw portion is used when the discharge head 34 is raised from the auxiliary cap 40 from the state shown in FIG. This is because the screw of S1 may be loosened.
For example, when the user screwes the inner cylinder portion 34c of the discharge head 34 into the connecting cylinder 48 of the auxiliary cap 40, if a rotational force is applied more than necessary to tighten the auxiliary screw portion S2, then the discharge head When the 34 is screwed up, the rotational force applied to the outer cylinder portion 34d of the discharge head 34 is transmitted to the main screw portion S1 via the auxiliary screw portion S2, and the screwing at the main screw portion S1 is loosened. There can be.
When the spirals of the main screw portion S1 and the sub screw portion S2 are formed in opposite directions as in the present invention, the main screw portion S1 is screwed even if the rotational force is transmitted to the main screw portion S1. Will not loosen.
Therefore, it is possible to prevent the auxiliary cap 40 from being unintentionally detached from the cylinder 10 when the discharge head 34 is to be screwed up.

In the above configuration, in order to remove the discharge head 34 from the auxiliary cap 40 from the state of FIG. 1, as shown in FIG. 3A, the discharge head 34 is rotated counterclockwise when viewed from directly above. ).
Next, after the liquid in the container is used up, as shown in FIG. 3 (B), both sides of the operation cylinder 50A are grasped and rotated in the opening direction of the reverse screw (clockwise when viewed from directly above). Just do it. By doing so, the assembly cylinder 42 is screwed off from the upper peripheral wall 16. As described above, even from the state shown in FIG. 1, the operation cylinder 50A can be gripped and rotated to screw off the assembly cylinder 42.
Next, when the discharge head 34 is gripped and pulled up, the operating member 26 is pulled out from the cylinder 10 as shown in FIG. 4, and thereby the coil spring c attached to the lower portion of the operating member 26 can also be pulled up. can.
Then, the coil spring c may be removed from the operating member 26, separated, and discarded.

Hereinafter, the discharger for a liquid container according to another embodiment of the present invention will be described. In these explanations, the description of the same configuration as that of the first embodiment will be omitted.

5 to 7 show a discharger for a liquid container according to a second embodiment of the present invention. In the present embodiment, the outward flange 45 is provided with an annular breaking line 52 when viewed from above.
In the present embodiment, the outer peripheral cylinder 50 hung from the outward flange 45 has the role of the sealing cylinder 50B. The lower end of the sealing cylinder 50B is brought close to the top plate 6 of the mounting cap 2.
In this configuration, when the sealing cylinder 50B is grasped and pulled up as shown by an imaginary line in FIG. 6A, the breaking line 52 is broken.
As a result, as shown by the solid line in FIG. 6B, the sealing cylinder 50B is removed from the periphery of the assembling cylinder 42.
In this state, as shown by an imaginary line in FIG. 6B, the outer peripheral surface of the assembly cylinder 42 is grasped by a finger and rotated in the opening direction, and the assembly cylinder 42 is screwed off from the upper peripheral wall 16. Just let me do it.
It is desirable that the breaking line 52 is provided on the inner peripheral side of the outward flange 45 so that the outward flange 45 does not interfere with the rotation operation of the assembling cylinder 42.
Next, as shown in FIG. 7, when the assembly cylinder 42 is gripped and pulled up, the operating member 26 and the coil spring c can be pulled out from the inside of the cylinder 10.
In this configuration, when the auxiliary cap 40 is removed from the cylinder 10, the sealing cylinder 50B is removed from the auxiliary cap, and a trace of opening remains clearly. Therefore, it has a deterrent effect on those who attempt to open the package illegally.
In the illustrated example, the break line 52 is formed at an intermittent portion (perforation), but it can also be formed at, for example, a weakening line.
Further, as shown in FIG. 6B, vertical finger hooking ribs 51 are intermittently formed on the outer peripheral surface of the assembly cylinder 42 in the circumferential direction.

2 ... Mounting cap 4 ... Mounting cylinder 6 ... Top plate 10 ... Cylinder 12 ... Cylinder peripheral wall 14 ... Collar
16 ... Upper peripheral wall 18 ... Main male screw 19 ... Ring plate 20 ... Lower peripheral wall 22 ... Suction pipe 24 ... Valve member 24a ... Leg cylinder 24b ... Valve plate 24c ... Connecting piece 24d ... Pedestal 26 ... Acting member 28 ... Piston guide (Lower part) 28a ... Main body 28b ... Flange-shaped wall part 28c ... Hanging cylinder part 30 ... Stem 32 ... Cylindrical piston 34 ... Discharge head 34a ... Top plate 34b ... Mounting cylinder part 34c ... Inner cylinder part (locking cylinder) 34d ... Outer cylinder 34e ... Nozzle 35 ... Secondary female screw 36 ... Closing cylinder 36a ... Vertical cylinder 36b ... Closing 40 ... Auxiliary cap 42 ... Assembling cylinder 43 ... Main female screw 44 ... Connecting wall 45 ... Outward flange 46 ... Inserting cylinder 48 ... Connecting cylinder 49 ... Secondary piston 50 ... Outer cylinder 50A ... Operating cylinder 50B ... Sealing cylinder 51 ... Finger hook rib 52 ... Breaking line (intermittent piece)
54 ... Concavo-convex surface for finger hook 100 ... Container body 102 ... Mouth neck c ... Coil spring h ... Vent
S1 ... Main screw part S2 ... Secondary screw part
V1 ... 1st check valve V2 ... 2nd check valve

Claims (3)

Cylinder (10) for insertion into the container body,
An operating member (26) that is vertically mounted in the cylinder (10) and has a discharge head (34) attached to a stem (30) that stands up from the cylinder (10).
A coil spring (c) that is detachably attached to the lower part (28) of the operating member (26) and urges the operating member (26) upward.
An annular auxiliary cap (40) that is assembled to the upper peripheral wall (16), which is the upper end of the cylinder (10), and regulates the range of upward movement of the operating member (26).
Equipped with
The auxiliary cap (40) stands up above the assembly cylinder (42) assembled to the upper peripheral wall (16) and the assembly cylinder (42), and can be separated into the discharge head (34). Has a connecting cylinder (48) connected to
With the connecting cylinder (48) separated from the discharge head (34), the discharge head (34) is moved up and down with respect to the cylinder (10) to suck the liquid in the container into the cylinder and discharge the head. It is a discharger for a liquid container provided so as to be pumped to.
A discharger for a liquid container, characterized in that an upper peripheral wall (16) of the cylinder (10) and an assembly cylinder (42) are screwed together via a main screw portion (S1). The connecting cylinder (48) is screwed to the discharge head (34) via the auxiliary screw portion (S2), and the connecting cylinder (48) is screwed to the discharge head (34).
The discharger for a liquid container according to claim 1, wherein one of the secondary screw portion (S2) and the main screw portion (S1) is formed as a positive screw and the other as a reverse screw. The cylinder (10) is vertically hung from a tubular mounting cap (2) that can be mounted on the mouth and neck of the container body.
A breaking line (52) is provided around the outward flange (45) protruding outward from the upper end of the assembly cylinder (42), and the assembly cylinder (42) is provided from the peripheral end of the outward flange (45). The liquid according to claim 1 or 2, wherein a sealing cylinder (50B) surrounding the sealing cylinder (50B) is hung down, and the lower end of the sealing cylinder (50B) is brought close to the upper surface of the mounting cap (2). Discharger for containers.

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