JPH0740509U - Container with pouring pump - Google Patents

Abstract

(57) [Summary] [Purpose] When releasing the screwed state between the piston and the casing, prevent the casing from rotating together with the piston. [Structure] The mouth tube portion 3 of the container body 2 is equipped with a pump device 10. The pump device 10 includes a casing 20 and a piston 4.
0 and. A packing 7 made of synthetic rubber having adhesiveness between the flange portion 25 of the casing 20 and the mouth tube portion 3.
Interpose 0. The upper portion of the casing 20 is rotatably inserted into the through hole 62 of the fastening cap 60. Fastening cap 6
When 0 is screwed into the mouth tube portion 3 and tightened, the flange portion 25 and the packing 70 are firmly sandwiched by the mouth tube portion 3 and the fastening cap 60, and the packing 70 comes into close contact with the mouth tube portion 3 and the flange portion 25. As a result, the casing 20 is attached to the mouth tube portion 3
It can be fixed so that it cannot rotate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a container equipped with a pump device in its mouthpiece.

[0002]

[Prior art]

 Some containers for shampoo etc. are equipped with a pump device on the mouth tube.

This pump device has a tubular casing having a pump chamber inside, and a piston that is slidably inserted in the casing in the axial direction. By moving the piston up and down. The contents are pumped up and poured out from the pouring nozzle.

In this pump device, the casing is inserted into the container from the mouth tube portion of the container, the casing and the piston are inserted into the central hole of the fastening cap, and the flange portion provided at the upper part of the casing and the upper end of the mouth tube portion. A packing is interposed between the fastening cylinder and the cap, the fastening cap is screwed into the mouth cylinder, and the flange and the packing are fixed by sandwiching the mouth cylinder and the cap.

Further, there is a container with a pouring pump of this type in which the piston is fixed at the lower limit position so that the total height of the container can be kept low and the piston cannot be moved up and down. To this end, a male screw part is provided on the outer surface of the upper part of the piston, and a female screw part is provided on the inner surface of the upper part of the casing so that the male screw part and the female screw part can be screwed together with the piston lowered to the lower limit position. The structure is general. If these screw parts are screwed together, the piston cannot move up and down, and careless pumping up of the contents can be prevented. Moreover, the overall height of the container can be kept low, which is advantageous for transportation and storage. .

[0006]

[Problems to be Solved by the Invention] Generally, when a cap is screwed and fastened with a packing interposed in the mouth tube of a container, when the cap is tightened, the packing and the mouth tube or the cap are connected. If there is no relative slippage between them, the cap cannot be completely tightened and a sufficiently closed state cannot be obtained. Therefore, the packing used in such a part is made of a material having appropriate lubricity, such as foamed polyethylene.

Also in the case of the pump-equipped container, a slippery material such as foamed polyethylene is used for the packing interposed between the flange portion and the mouth tube portion. However, in the case of packing for this container with a pump, the fastening cap comes into contact with the flange portion of the casing to rotate and slide, thereby pressing the flange portion against the mouth tube portion of the container through the packing. Therefore, no slip is required between the packing and the flange or mouthpiece.

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

The present invention has been made in view of the above problems of the conventional technique, and an object of the present invention is to provide a container with a pump provided with a packing made of a material suitable for an actual use mode.

[0010]

[Means for Solving the Problems]

 The present invention adopts the following configurations in order to solve the above problems. That is, the container of the present invention is a container in which a pump device for pouring out the contents is installed in the mouth tube part of the container body, and the pump device has a casing, a piston, a fastening cap and a pouring nozzle. is doing.

The casing has a pump chamber inside, and has a flange portion that is inserted into the container body from the mouth tube portion and is arranged above the mouth tube portion of the container body. The piston is slidably inserted into the casing in the axial direction, the upper portion of the piston projects from the casing, and the inside serves as a flow passage that can communicate with the pump chamber. The spout nozzle is provided at the upper end of the piston and is connected to the flow passage.

The fastening cap has a through hole that allows the upper portion of the casing to penetrate therethrough, a locking portion that locks to the flange portion of the casing, and a female screw portion that is screwed into the male screw portion of the mouth tube portion. ing.

A packing is interposed between the upper surface of the mouth cylinder of the container body and the lower surface of the flange of the casing to seal between the container body and the pump device, and the packing is made of an adhesive material. To do. Examples of the packing material include natural rubber, synthetic rubber, and thermoplastic elastomer.

A female screw portion is formed on the upper part of the casing, and a male screw portion which is screwed to the female screw portion is formed on the upper portion of the piston, and the screw portion is screwed to lower the piston. The position may be fixed.

[0015]

[Action]

 Since the packing has adhesiveness, the packing and the mouth tube portion, and the packing and the flange portion can be made difficult to rotate relative to each other.

Further, when the screwing of the piston screwed into the casing is released, the casing is less likely to rotate together with the piston, and the piston can be released reliably.

[0017]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. A container 1 with a pouring pump according to the present invention is configured by attaching a pump device 10 to a mouth tube portion 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 the lower end of the casing main body 21, and a casing head portion 23 connected to the upper end of the casing main body 21.

A check valve 24 is provided at the lower end of the casing body 21 to prevent the contents sucked up in the casing body 21 from returning to the container body 2. The lower end of the suction pipe 22 is located near the bottom surface of the container body 2.

An annular flange portion 25 that projects outward is provided at the top 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 portion 26. Further, 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 cylinder portion 29 extends downward from the center of the flange portion 28. The stopper tube portion 29 is fitted in the casing body 21, and the lower portion thereof is arranged so as not to block the air hole 27. A female screw portion 30 is formed on the upper inner peripheral surface of the stopper cylinder portion 29. Further, a connecting cylinder 31 which is fitted onto the neck portion 26 extends downward from the lower surface of the collar portion 28, and the neck portion 26 and the connecting cylinder 31 are connected and fixed in a non-rotatable manner 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 cylindrical shape with a bottom, and has a through hole 44 at the lower edge of its peripheral wall portion. A gap is provided between the outer peripheral surface of the bottom portion of the spring retainer 41 and the inner peripheral surface of the casing body 21 so that the contents can flow therethrough.

The shaft portion 42 is connected and fixed to the upper portion of the spring retainer 41, and the inside thereof is a hollow airflow passage 45. The head portion 43 is fixedly connected to the 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 one end of the flow passage 47 is connected to the flow passage 45 and the other end is opened at the tip of the pouring nozzle 46. A male screw portion 48 is formed on the outer peripheral surface of the connecting portion of the head portion 43 to the shaft portion 42.

A piston seal ring 49 is fitted on the outside of the through hole 44 of the piston 40. The piston seal ring 49 is slidably slidable on the inner peripheral surface of the casing body 21 and slidably slidably on the outer peripheral surface of the peripheral wall portion of the spring retainer 41 of the piston 40. Has been done. The axial movable range of the piston seal ring 49 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 biased 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. A pump chamber 51 is provided inside the casing body 21 and below the spring retainer 41.

The pump device 10 is attached to the container body 2 by a fastening cap 60. The fastening cap 60 is arranged 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 portion (locking portion) 61, through which the neck portion 26 of the casing main body 21 rotates. It is movably inserted. The fastening cap 60 is attached to the casing body 21 before the casing head 23 is fixed. A female screw portion 63 is formed on the inner peripheral surface of the fastening cap 60, and can be screwed with a 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 an adhesive synthetic rubber is disposed between the mouth tube portion 3 of the container body 2 and the flange portion 25 of the pump device 10, and the casing 20 is inserted from the mouth tube portion 3. The packing 70 may be joined to the lower surface of the flange portion 25 in advance.

Then, the fastening cap 60 is screwed into the mouth tube portion 3. When the screwing progresses to a certain extent, the packing 70 comes into pressure contact with the upper surface of the mouth tube portion 3 and the lower surface of the flange portion 25. Then, since the packing 70 has an adhesive property, the packing 70 comes into close contact with the mouth tube portion 3 and the flange portion 25, and the packing 70 and the casing 20 cannot rotate with respect to the container body 2. 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 is screwed into the mouth tube portion 3. Then, finally, the flange portion 25 and the packing 70 are firmly sandwiched by the mouth tube portion 3 and the top plate portion 61, and the casing 20 cannot rotate with respect to the container body 2, whereby the pump device 10 is provided. Are fixed to the container body 2.

When the container 1 with the pouring pump is transported or displayed in a store, the piston 40 is pushed to the lower limit position and the male screw portion 48 of the piston 40 is moved as shown in FIG. The internal threaded portion 30 of the casing 20 is screwed and tightened. By doing so, the total height of the container 1 with a pouring pump can be kept low, and the contents can be prevented from being pumped up carelessly and being poured out.

In order to operate the pump device 10 from this state, the container body 2 is held by one hand, the head portion 43 of the pump device 10 is held by the other hand, and the casing 20 and the piston 40 are screwed together. The head portion 43 is rotated in the direction to loosen the joint. At this time, since the flange portion 25 of the casing 20 is crimped to the mouth tube portion 3 via the packing 70 having an adhesive property, the flange portion 25 keeps a non-rotatable state with respect to the container body 2. It does not rotate together with the head 43. Therefore, the screw engagement between the casing 20 and the piston 40 can be reliably released.

When the screwing of the casing 20 and the piston 40 is released, the coil spring 50 pushes up the piston 40 to the upper limit position. In this 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 make the pump chamber 51 and the through hole 44 communicate with each other. As a result, when the piston 40 is pushed down, the pump chamber is closed. The air or contents in 51 passes through the gap between the spring retainer and the casing main body, the through hole 44, the flow passage 45 of the shaft 42 and the flow passage 47 of the head 43 in that order from the pouring nozzle 46. Be poured out.

When the piston 20 springs back and rises, the gap between the pump chamber 51 and the through hole 44 is blocked by the piston seal ring 49, and the rise of the piston 20 causes a negative pressure in the pump chamber 51. Therefore, the check valve 24 is opened, and the content in the container body 2 is sucked up into the pump chamber 51 through the suction pipe 22.

[0035]

[Effect of device]

 As described above, according to the present invention, since the packing is made of the adhesive material, the casing is rotated to the mouth tube portion of the container body by fastening the fastening cap to the mouth tube portion of the container body. It can be concluded impossible. 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 drawings]

FIG. 1 is a vertical cross-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 sectional view showing a case where a piston is at a lower limit position in the container with a pouring pump.

[Explanation of symbols]

 1 Container with pouring pump 2 Container body 3 Port cylinder part 4 Male screw part 10 Pump device 20 Casing 25 Flange part 30 Female screw part 40 Piston 45, 47 Flow passage 46 Spouting nozzle 48 Male screw part 51 Pump chamber 60 Fastening cap 61 Top plate Part (locking part) 62 through hole 63 female screw part 70 packing

Claims (4)

[Scope of utility model registration request] 1. A pump device for pouring out the contents is installed in the mouth tube part of the container body, and this pump device has a casing, a piston, a fastening cap and a pouring nozzle, and the casing is The inside is a pump chamber, which is inserted into the container body from the mouth tube portion and has a flange portion arranged above the mouth tube portion of the container body, and the piston is axially arranged in the casing. Slidingly inserted, the upper part protrudes from the casing, the inside is a flow passage that can communicate with the pump chamber, the pouring nozzle is provided at the upper end of the piston and is connected to the flow passage,
The fastening cap has a through hole that allows the upper part of the casing to penetrate therethrough, a locking portion that locks to the flange portion of the casing, and a female screw portion that is screwed into the male screw portion of the mouth cylinder portion. In a container with a pouring pump in which a packing is interposed between an upper surface and a lower surface of a flange portion of a casing to seal a space between a container body and a pump device, the packing is formed of an adhesive material. Characteristic container with pouring pump. 2. The pouring pump according to claim 1, wherein a female screw portion is formed on an upper portion of the casing, and a male screw portion screwed to the female screw portion is formed on an upper portion of the 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.