JP2605646Y2 - Container with pouring pump - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container provided with a pump device in a mouthpiece.

[0002]

2. Description of the Related Art Some containers for accommodating shampoos and the like are provided with a pump device in a mouth portion thereof.

[0003] This pump device has a cylindrical casing having a pump chamber therein, and a piston inserted slidably in the casing in the axial direction. The material is pumped up and discharged from the discharge nozzle.

In this pump device, a casing is inserted into a container from a mouthpiece portion of a container, a casing and a piston are inserted into a central hole of a fastening cap, and a flange portion provided at an upper portion of the casing and an upper end of the mouthpiece portion are provided. With a packing interposed between, the fastening cap is screwed into the mouthpiece,
The flange and the packing are fixed by being sandwiched between the mouthpiece and the cap.

[0005] Further, in this type of a container with a dispensing pump, there is a container in which a piston is fixed at a lower limit position so that the total height of the container is kept low and the piston cannot be moved up and down. To this end, a male screw portion is provided on the upper outer surface of the piston, and a female screw portion is provided on the upper inner surface of the casing, and the male screw portion and the female screw portion can be screwed together with the piston lowered to the lower limit position. Is common. If these screw portions are screwed together, the piston cannot move up and down, so that inadvertent pump-up of the contents can be prevented. In addition, the overall height of the container is kept low, and transportation and storage are advantageous.

[0006]

Generally, when a cap is screwed and fastened with a packing interposed in the mouth portion of a container, when the cap is tightened, the packing is connected to the mouth portion or the cap. If there is no relative slip between them,
The cap cannot be completely tightened, and a sufficient sealed state cannot be obtained. Therefore, the packing used for such a part is made of a material having an appropriate lubricity, for example, foamed polyethylene.

In the case of the pump-equipped container as well, a packing material interposed between the flange portion and the mouthpiece portion employs a slippery material such as foamed polyethylene. However, in the case of packing in this pump-equipped container, the fastening cap comes into contact with the flange portion of the casing and slides and rotates.
Since the flange is pressed against the mouthpiece of the container via the packing, no slippage is required between the packing and the flange or the mouthpiece.

In addition, in the case where the screwing of the piston screwed to the lower limit position is released to allow the piston to move up and down, slippage occurs between the casing and the packing when the piston is rotated in the loosening direction. In some cases, the casing co-rotates with the piston and the piston cannot be released.

The present invention has been made in view of such problems of the conventional technology, and has as its object to provide a pump-equipped container provided with packing made of a material suitable for an actual use mode.

[0010]

In order to solve the above-mentioned problems, the present invention employs the following configuration. That is, the container of the present invention is a container provided with a pump device for discharging the contents into the mouthpiece portion of the container body, and the pump device has a casing, a piston, a fastening cap, and a discharging nozzle. ing.

The casing has a pump chamber inside, and has a flange portion which is inserted into the container body from the mouthpiece portion and is disposed above the mouthpiece portion of the container body.
The piston is slidably inserted in the casing in the axial direction, the upper part of the piston protrudes from the casing, and the inside is a flow passage that can communicate with the pump chamber. The discharge nozzle is provided at an upper end of the piston and communicates with the flow passage.

The fastening cap has a through hole that penetrates an upper portion of the casing, a locking portion that locks on a flange portion of the casing, and a female screw portion that is screwed into a male screw portion of the mouthpiece portion. I have.

[0013] A packing is interposed between the upper surface of the mouth portion of the container body and the lower surface of the flange portion of the casing so as to seal between the container body and the pump device, and the packing is formed of an adhesive material. I do. Examples of the packing material include natural rubber, synthetic rubber, and thermoplastic elastomer.

A female screw portion is formed on the upper portion of the casing, and a male screw portion to be screwed with the female screw portion is formed on the upper portion of the piston, and the piston is fixed at the lower limit position by screwing these screw portions. It may be possible to do so.

[0015]

Since the packing has an adhesive property, it is possible to make it difficult to relatively rotate the packing and the barrel, and the packing and the flange.

Further, when the screwing of the piston screwed into the casing is released, the casing does not easily rotate together with the piston, and the piston can be reliably released.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Container 1 with pouring pump according to the present invention
Is constituted by attaching a pump device 10 to a mouthpiece 3 of a container body 2. The pump device 10 includes a casing 20, a piston 40, and a fastening cap 60.

The casing 20 includes a hollow cylindrical casing main body 21, a suction pipe 22 connected to a lower end of the casing main body 21, and a casing head 23 connected to an upper end of the casing main body 21.

A check valve 24 is provided at the lower end of the casing body 21.
Is provided to prevent the contents sucked into the casing main body 21 from returning to the container main body 2. or,
The lower end of the suction pipe 22 is located near the bottom of the container body 2.

An annular flange portion 25 extending outward is provided at an upper portion of the casing body 21, and a neck portion 26 is provided above the flange portion 25. The casing head 23 is fixed to the neck 26. An air hole 27 is opened slightly below the flange portion 25 of the casing body 21.

The casing head 23 has a flange portion 28 at the upper part, and a stopper tube portion 29 extends downward from the center of the flange portion 28. The stopper cylinder 29 is fitted into the casing body 21, and the lower part thereof is arranged so as not to close the air hole 27. A female screw part 30 is formed on the upper inner peripheral surface of the stopper cylinder part 29. In addition, collar part 2
8 is a connecting cylinder 31 that fits over the neck 26.
The neck portion 26 and the connecting cylinder 31 are non-rotatably connected and fixed by appropriate means.

A piston 40 is slidably inserted in the casing 20 in the vertical and circumferential directions. The piston 40 includes a spring retainer 41, a shaft portion 42, and a head portion 43.

The spring retainer 41 has a bottomed cylindrical shape, and has a through hole 44 at the lower edge of the peripheral wall. There is a gap between the outer peripheral surface of the bottom of the spring retainer 41 and the inner peripheral surface of the casing body 21 so that the contents can be circulated.

The shaft portion 42 is connected and fixed to an upper portion of the spring retainer 41, and has a hollow inside and forms a flow passage 45. The head portion 43 is connected and fixed to an upper portion of the shaft portion 42, and the head portion 43 has a pouring nozzle 46 extending outward. A flow passage 47 is provided inside the head portion 43, and the flow passage 47 has one end connected to the flow passage 45 and the other end opened at the tip of the discharge nozzle 46. An external thread portion 48 is formed on the outer peripheral surface of a portion of the head portion 43 connected to the shaft portion 42.

A piston seal ring 49 is fitted outside the through hole 44 of the piston 40. The piston seal ring 49 is slidable in a sealed state with respect to the inner peripheral surface of the casing main body 21, and is slidably slidable with respect to the outer peripheral surface of the peripheral wall portion of the spring retainer 41 of the piston 40. ing. The movable range of the piston seal ring 49 in the axial direction with respect to the spring retainer 41 is limited by the lower end of the shaft portion 42 of the piston 40.

The piston 40 is urged in a direction away from the casing 20 (upward in the figure) by a coil spring 50 provided between the spring retainer 41 and the casing body 21. The pump chamber 51 is located inside the casing body 21 and below the spring retainer 41.

The pump device 10 is mounted on the container body 2 by a fastening cap 60. Fastening cap 60
Is disposed between the casing body 21 and the casing head 23, and is attached to the casing 20 so as to be rotatable and non-separable.

That is, the fastening cap 60 has a cylindrical shape with a top, and has a through hole 62 at the center of the top plate (locking portion) 61.
6 is rotatably inserted. The fastening cap 60
Is attached before the casing head 23 is fixed to the casing body 21. A female screw portion 63 is formed on the inner peripheral surface of the fastening cap 60, and can be screwed into the male screw portion 4 provided on the outer peripheral surface of the mouth tube portion 3 of the container body 2.

The pump device 10 is fixed to the container body 2 as follows. A ring-shaped packing 70 made of adhesive synthetic rubber is arranged between the mouthpiece 3 of the container body 2 and the flange 25 of the pump device 10, and the casing 20 is inserted from the mouthpiece 3. Note that the packing 70 may be joined to the lower surface of the flange 25 in advance.

Then, the fastening cap 60 is screwed into the barrel 3. When screwing proceeds to some extent, packing 7
0 presses against the upper surface of the mouthpiece 3 and the lower surface of the flange 25. Then, since the packing 70 has adhesiveness,
The packing 70 and the casing 20 cannot rotate with respect to the container body 2 because the packing 70 and the casing 20 are in close contact with the mouthpiece 3 and the flange 25. As a result, the fastening cap 60 rotates while the top plate portion 61 slides on the upper surface of the flange portion 25, and
It will be screwed into. And ultimately,
The flange 25 and the packing 70 are composed of the mouthpiece 3 and the top plate 61.
The casing 20 is firmly held by the
With respect to the pump device 10.
Is fixed to the container body 2.

When the container 1 with the pump is to be transported or displayed at a store, the piston 40 is pushed to the lower limit position, and the external thread 48 of the piston 40 is moved to the casing 20 as shown in FIG. And screwed into the female screw part 30 of. By doing in this way, the total height of the container 1 with a discharge pump can be kept low, and the contents can be prevented from being carelessly pumped up and discharged.

To enable the operation of the pump device 10 from this state, the container body 2 is held with one hand, the head 43 of the pump device 10 is held with the other hand, and the casing 20 and the piston 40 are screwed together. The head 43 is rotated in a direction to loosen. At this time, since the flange portion 25 of the casing 20 is press-fitted to the mouthpiece portion 3 via the sticky packing 70, the flange portion 25 is kept in a non-rotatable state with respect to the container body 2, and the head portion is No co-rotation with 43. Therefore, the casing 20 and the piston 40
Can be securely released.

When the screw engagement between the casing 20 and the piston 40 is released, the piston 40 is pushed up to the upper limit position by the coil spring 50. In the pump device 10, when the piston 40 is pushed down from the upper limit position, the piston seal ring 49 is positioned so as to connect the pump chamber 51 with the through hole 44. As a result, when the piston 40 is pushed down, the pump chamber The air or the contents in 51 are discharged from the discharge nozzle 46 sequentially through the gap between the spring retainer and the casing body, the through hole 44, the flow passage 45 of the shaft portion 42, and the flow passage 47 of the head portion 43. .

When the piston 20 springs up and rises, the space between the pump chamber 51 and the through hole 44 is cut off by the piston seal ring 49, and the pump 20 rises to a negative pressure due to the rise of the piston 20. Therefore, the check valve 24 is opened, and the contents in the container body 2 are sucked into the pump chamber 51 through the suction pipe 22.

[0035]

[Effects of the Invention] As described above, according to the present invention,
Since the packing is formed of an adhesive material, the casing can be non-rotatably fastened to the mouthpiece of the container body by fastening the fastening cap to the mouthpiece of the container body. Then, when the piston is rotated to release the screwed state between the piston and the casing, the casing can be prevented from rotating together, and the screwed state can be reliably released.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a case where a piston is at an upper limit position in a container with a pouring pump according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a case where a piston is at a lower limit position in the container with a pouring pump.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 container with dispensing pump 2 container main body 3 container 4 male screw 10 pump device 20 casing 25 flange 30 female screw 40 piston 45, 47 flow passage 46 discharge nozzle 48 male screw 51 pump chamber 60 fastening cap 61 top plate Part (locking part) 62 Through hole 63 Female thread part 70 Packing

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 39/00-55/16 B65D 83/00

Claims (4)

(57) [Scope of request for utility model registration] 1. A pump device for discharging contents into a mouthpiece portion of a container body, the pump device having a casing, a piston, a fastening cap, and a discharging nozzle. The inside thereof is a pump chamber, has a flange portion inserted from the mouthpiece portion into the container body, and is disposed above the mouthpiece portion of the container body, and the piston is axially attached to the casing. It is slidably inserted, the upper part protrudes from the casing, the inside is a flow path that can communicate with the pump chamber, the discharge nozzle is provided at the upper end of the piston and is connected to the flow path,
The fastening cap has a through hole that penetrates an upper portion of the casing, a locking portion that locks to a flange portion of the casing, and a female screw portion that is screwed into a male screw portion of the barrel portion. In a container with a discharge pump in which packing is interposed between the upper surface and the lower surface of the flange portion of the casing to seal between the container body and the pump device, the packing is formed of an adhesive material. A container with a dispensing pump. 2. A spout pump according to claim 1, wherein a female screw portion is formed at an upper portion of said casing, and a male screw portion to be screwed to said female screw portion is formed at an upper portion of said piston. container. 3. The container with a pouring pump according to claim 1, wherein the packing is made of rubber. 4. The container with a pouring pump according to claim 1, wherein the packing is made of a thermoplastic elastomer.