JPH0958731A - Pump unit for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency in works for assembling a pump unit for a container, and to improve productivity therewith. SOLUTION: A suction valve 20, a piston main body 30, a stem 40, a piston valve 50, a spring 90, and a delivery valve 91 are assembled into a cylinder 10, and after that a stopper 60 is fitted and fixed to the inner edge on the upper part of the cylinder 10, and thereby a pump intermediate unit is assembled. The pump intermediate unit can be made integral with a cap 70 by inserting the upper part of the stem 40 through a tubular neck part 73 and by fitting a flange 13 of the cylinder 10 into the cap 70, and a pump unit for a container is completed by mounting a pump head 80 on the upper end of the stem 40. Then, the pump unit for the container can be mounted on the container with the cap 70 screwed down onto a tubular mouth part 2 of the containber 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump device which is attached to a mouth tube of a container and pours out the contents in the container.

[0002]

2. Description of the Related Art Japanese Utility Model Publication No. 7-13816 discloses one of such container pump devices. This pump device is equipped with a cylinder having a hollow cylindrical shape, the inside of which is a pump chamber, and a suction port at the bottom, and a piston is provided inside the cylinder so that it can slide up and down. The pump chamber can be expanded and contracted by. In addition, a stem, the lower part of which is connected to a piston, is vertically movable inside the cylinder. The inside of this stem is a pouring passage that connects to the pump chamber, the upper part of the stem projects upward from the cylinder, and a pump head having a pouring port is fixed to the tip thereof.

The cylinder is provided with a flange portion at its upper end, the flange portion is mounted inside a cap screwed into the mouth tube portion, the top of the cap penetrates the upper part of the stem, and the pump device is It is unitized.

Further, a stopper piece is provided inside the cap, and the upper limit position of the stem locks the stopper piece on the stem to determine the upper limit position of the stem to prevent the stem from coming out upward from the cylinder. are doing.

To mount this pump device on a container, a cylinder is inserted into the container from the mouth cylinder of the container, the flange is placed on the upper end of the mouth cylinder, and the cap is screwed onto the mouth cylinder. The flange portion is sandwiched and fixed by the cap and the mouth tube portion.

In this pump device, when the pump head is pushed down, the piston descends, the suction valve at the suction port closes, and the pump chamber is pressurized at the same time, and the contents in the pump chamber are pumped through the pouring passage in the stem. It is designed to be discharged from the spout of the head.After this, when the pump head is released, the piston is raised by the spring built into the cylinder, which reduces the pressure in the pump chamber and opens the suction valve. The contents in the container are pumped up from the suction port into the pump chamber.

[0007]

However, in the conventional pump device having the above-described structure, the structure in which the unitization of the pump device is completed only after the piston, the stem, the spring, etc. are incorporated in the cylinder and the flange portion is attached to the cap. Therefore, each member is disassembled in the state before the flange portion is attached to the cap. This made the assembly workability very bad and the productivity bad.

Further, as a process of assembling the pump device,
Since one process is a series of work until the flange part is attached to the cap, even when assembling pump devices that differ only in cap design (color, shape, etc.), a series of steps is required for each cap. The process had to be carried out, which also reduced productivity.

The present invention has been made in view of the above-mentioned problems of the prior art. It enables unitization at a stage of lower completion than that of the prior art, enables division of the assembly process, and An object of the present invention is to provide a container pump device capable of improving workability and productivity.

[0010]

The present invention adopts the following means in order to solve the above problems. The present invention is (a)
It has a hollow cylindrical shape, the inside is a pump chamber, the suction port that is connected to the pump chamber is provided in the lower part, and it is inserted from the mouth cylinder part of the container into the container and the flange part is placed on the upper end of the mouth cylinder part. A cylinder; and (b) a piston that is slidable up and down in the cylinder and expands and contracts the pump chamber; and (c) a flange of the cylinder that is screwed into the mouth cylinder of the container and cooperates with the mouth cylinder. A cap for sandwiching and fixing the portion, and (d) a hollow cylindrical shape, the inside of which is a pouring passage communicating with the pump chamber, the lower portion of which is inserted into the cylinder so as to be vertically movable and is connected to the piston, A stem having an upper part protruding from the cylinder; (e) a pump head attached to the upper end of the stem and having a spout for pouring the contents in the spout passage of the stem; and (f) the inner edge of the upper part of the cylinder. Fixed to the stem A stopper for preventing the stopper from coming off from the binder, the piston chamber is pressurized by the lowering of the piston, the contents in the pump chamber are delivered to the pouring passage of the stem, and the piston is raised to remove the contents in the container. A container pump device characterized by being pumped up from a suction port of a cylinder into a pump chamber (corresponding to claim 1).

In this container pump device, the piston and the stem are attached to the cylinder, and the stopper is fixed to the inner edge of the upper part of the cylinder, so that the flange portion of the cylinder can be unitized before it is attached to the cap. Becomes

The assembling process of the pump device can be divided into a process up to unitization as described above and a process thereafter. In the case of assembling a container pump device having different cap specifications, the unitized portion is a common portion.

The stopper may be provided with a piston braking portion for restricting the rise of the piston (corresponding to claim 2).

Further, according to the present invention, (a) it has a hollow cylindrical shape, the inside of which is a pump chamber, and a suction port connected to the pump chamber is provided in the lower portion, and the container is inserted into the container from the mouth cylinder portion of the container. A cylinder for mounting the flange on the upper end of the mouth cylinder, and (b)
A cap that is screwed into the mouth cylinder of the container and clamps and fixes the flange of the cylinder in cooperation with the mouth cylinder, and (c) allows the inflow into the pump chamber from the suction port of the cylinder, and A suction valve to prevent the outflow into the container, and (d)
A partition wall part that is mounted in the cylinder so as to be able to move up and down and has a partition part that partitions the pump chamber at the bottom part, a shaft part stands upright from the partition wall part, and the shaft part stands between the outer peripheral surface of the partition part and the inner peripheral surface of the cylinder. A piston body having a first flow path connected to the pump chamber, and (e) a hollow cylindrical shape, the inside of which is a pouring passage, the lower part is vertically inserted into the cylinder, and the upper part projects from the cylinder. And a stem fixed to the shaft portion by inserting the upper portion of the shaft portion of the piston main body from the lower opening, forming a third flow path connecting to the outer peripheral surface of the shaft portion and connecting to the shaft portion, (F) It has an annular shape and is arranged between the inner peripheral surface of the cylinder and the outer peripheral surface of the shaft portion of the piston body,
The partition wall of the piston body and the lower end of the stem are attached so as to be movable along the axial direction, and communicate with the first flow path and the third flow path with the outer peripheral surface of the shaft section of the piston main body. A first seal portion that forms a second flow path and slides in pressure contact with the inner peripheral surface of the cylinder, a second seal portion that slides in pressure contact with the lower inner peripheral surface of the stem, and the first seal portion contacting the partition wall portion of the piston body. A piston valve having a third seal portion that shuts off the flow passage and the second flow passage; and (g) a spring that is installed between the cylinder and the piston body to urge the piston body upward.
(H) A stopper fixed to the inner edge of the upper part of the cylinder to prevent the stem from coming off from the cylinder, and (h) fixed to the upper end of the stem for pouring out the contents in the pouring passage of the stem. A pump head having an outlet, wherein the pump head, the stem, and the third seal portion of the piston valve are separated from the partition wall portion of the piston body when the piston body descends, The pump chamber and the pouring passage of the stem communicate with each other through the three flow passages so that the contents can be poured out from the pouring outlet of the pump head. When the pump head, the stem and the piston body rise, the third portion of the piston valve
The seal part abuts the partition wall of the piston body to block the first flow path and the second flow path, the suction valve opens, and the contents in the container are pumped up from the suction port of the cylinder into the pump chamber. A characteristic container pump device (corresponding to claim 3).

In this container pump device, a cylinder is equipped with a suction valve, a piston body, a stem, a piston valve, and a spring, and a stopper is fixed to the inner edge of the upper portion of the cylinder to prevent the flange portion of the cylinder from being mounted on the cap. It becomes possible to unitize at the stage of.

The assembling process of the pump device can be divided into the process up to unitization as described above and the process thereafter. In the case of assembling a container pump device having different cap specifications, the unitized portion is a common portion.

This container pump device can also be constructed as follows. That is, the suction valve includes a valve body that opens and closes the suction port of the cylinder, and a guide rod that extends upward from the valve body. The shaft portion of the piston body has a hollow cylindrical shape and the partition wall portion has a shaft portion. An opening continuous to the hollow portion is formed, and the guide rod of the suction valve is inserted into the hollow portion of the shaft portion from this opening in a sealed state so as to be able to move up and down relatively (corresponding to claim 4).

Further, the stopper may be provided with a piston valve braking portion for restricting the rise of the piston valve (corresponding to claim 5).

<Raw Material of the Present Invention> Each component of the container pump device of the present invention can be formed of plastic.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
1 to 7 will be described with reference to the drawing.

[First Embodiment] FIGS. 1 and 2 are sectional views of a container pump device (hereinafter, simply referred to as a pump device) according to a first embodiment of the present invention.

The pump device is attached to the mouth tube portion 2 of the container 1, and its main components are a cylinder 10, a suction valve 20, a piston body 30, a stem 40, a piston valve 50, and a stopper 60. , A cap 70, a pump head 80, a spring 90, a discharge valve 91, a packing 92, and a suction pipe 93.

The cylinder 10 is in the shape of a hollow cylinder whose upper and lower sides are open. The upper part is a large-diameter cylinder part 11 and the lower part is a small-diameter cylinder part 12. The upper end of the large-diameter cylinder part 11 is radially outward. A projecting annular flange portion 13 is provided. An annular valve seat 14 projecting inward is formed on the inner surface of the boundary between the large-diameter cylindrical portion 11 and the small-diameter cylindrical portion 12, and the inside of the valve seat 14 serves as a suction port 15. A plurality of plate-shaped guide ribs 16 projecting inward and extending in the axial direction are provided in the circumferential direction on the inner surface of the lower end of the large-diameter cylindrical portion 11, and a stepped spring receiving portion 16 a is provided in the middle of each vertical rib 16. Are formed.

An annular packing 92 is joined to the lower surface of the flange portion 13, and an upper end portion of a suction pipe 93 is fitted inside the small diameter tubular portion 12. The lower end of the suction pipe 93 extends near the bottom of the container.

A suction valve 20, a piston body 30, a stem 40, a piston valve 50 and a spring 90 are mounted inside the large-diameter cylindrical portion 11 of the cylinder 10. The suction valve 20 has a rod-like shape, and can be seated on and separated from the valve seat 14, a guide rod 22 extending upward from an upper portion of the valve body 21, and an outer peripheral surface of the valve body portion 21 at predetermined circumferential intervals. And a plurality of fins 23 provided.

The valve body 21 is a guide rib 16 of the cylinder 10.
It is slidably inserted inside. The outer peripheral portion of the tip of the valve body 21 is formed in a convex curved shape, and the outer peripheral portion of the tip is seated on the upper surface of the valve seat 14 to close the suction port 15, and the outer peripheral portion of the tip separates from the valve seat 14 and sucks. Open mouth 15.

The radial end of each fin 23 of the suction valve 20 extends to a position beyond the spring receiving portion 16a of the cylinder 10, and each fin 23 is inserted between the guide ribs 16 of the cylinder 10.

The piston body 30 is disposed above the suction valve 20 and is attached to the cylinder 10 so as to be able to move up and down. The piston body 30 includes a substantially cylindrical partition wall portion 31 formed in the lower portion, and a hollow cylindrical shaft cylinder portion (shaft portion) 33 that penetrates a top plate portion 32 of the partition wall portion 31.
A portion surrounded by the partition wall portion 31 of the piston body 30 and the large-diameter cylinder portion 11 of the cylinder 10 is a pump chamber 19.

A plurality of vertical ribs 34 are provided on the outer peripheral surface of the lower portion of the partition wall 31 at equal intervals in the circumferential direction. This vertical rib 34
The outer peripheral surface of is slidable on the inner peripheral surface of the large-diameter cylindrical portion 11 of the cylinder 10, and between the vertical ribs 34 between the outer peripheral surface of the partition wall portion 31 and the inner peripheral surface of the large-diameter cylindrical portion 11. A first flow path 35 is formed in the. The guide rod 22 of the suction valve 20 is slidably and slidably inserted from the lower opening into the shaft cylindrical portion 33.

A plurality of vertical ribs 36 are provided on the outer peripheral surface of the lower portion of the shaft tube portion 33 at equal intervals in the circumferential direction, and the upper portion of the shaft tube portion 33 is connected to the stem 40. The stem 40 is arranged above the piston body 30 and is attached to the cylinder 10 so as to be able to move up and down. The stem 40 is in the shape of a hollow cylinder whose upper and lower sides are open, the upper part is a small diameter cylinder part 41, the lower part is a large diameter cylinder part 42, and the inside of the upper part of the small diameter cylinder part 41 is a pouring passage 44.

An annular valve seat 43 projecting inward is provided on the upper inner peripheral surface of the small-diameter cylindrical portion 41, and a spherical discharge valve 91 is inserted on the upper side of the valve seat 43. The discharge passage 44 is seated on the valve seat 43 to close the discharge passage 44, and the discharge valve 91 separates from the valve seat 43 to open the discharge passage 44.

A plurality of vertical ribs 45 are provided on the inner peripheral surface of the small-diameter cylindrical portion 41 below the valve seat 43 at equal intervals in the circumferential direction. Inside the vertical rib 45, the piston main body 30 is provided. The upper portion of the shaft tube portion 33 is fitted and fixed, and the stem 40 and the piston body 30 are integrated. In this assembled state, as shown in FIG. 3, the spout passage 44 is provided between the vertical ribs 45 between the inner peripheral surface of the small diameter cylindrical portion 41 and the outer peripheral surface of the shaft cylindrical portion 33.
A third flow path 46 communicating with the above is formed.

The large-diameter tubular portion 42 is located outside the vertical rib 36 of the piston body 30, and the lower end of the large-diameter tubular portion 42 is located above the partition wall portion 31 of the piston body 30 and above it.

Integrated piston body 30 and stem 4
0 is a spring 9 provided between the partition wall 31 of the piston body 30 and the spring receiving portion 16a of the cylinder 10.
Always urged upward by 0.

Further, the fin 23 of the suction valve 20 can be hooked on the lower end of the spring 90, and the valve body 21 of the suction valve 20 is separated from the valve seat 14 as shown in FIG. The upper limit position of the suction valve 20 is when it hits the lower end of the spring 90.

A piston valve 50 is inserted outside the vertical rib 36 of the piston body 30 and between the partition wall portion 31 of the piston body 30 and the large diameter cylinder portion 42 of the stem 40. The piston valve 50 has an annular shape, and the piston body 30 and the stem 4 are provided between the partition wall portion 31 and the large-diameter cylindrical portion 42.
It is attached so that it can move up and down with respect to zero.

The upper and lower outer peripheral surfaces of the outer annular portion 51 of the piston valve 50 serve as the first seal portions 52, 52, which slide in pressure contact with the inner peripheral surface of the large-diameter cylindrical portion 11 of the cylinder 10 to form the inner annular portion. The upper end of the outer peripheral surface of 53 is the second seal portion 54.
As a result, the inner peripheral surface of the large-diameter cylindrical portion 42 of the stem 40 is pressed and slid in a sealed state, and the lower end portion of the inner annular portion 53 can be brought into contact with and separated from the top plate portion 32 of the piston body 30 as a third seal portion 55. Has become.

Further, the inner peripheral surface of the inner annular portion 53 slides on the outer peripheral surface of the vertical rib 36 of the piston main body 30 to form the piston main body 3
The first flow path 35 and the third flow path 4 are provided between the vertical ribs 36 between the outer peripheral surface of the shaft cylindrical portion 33 of 0 and the inner peripheral surface of the inner annular portion 53.
A second flow path 37 is formed to connect 6 with. The second flow path 37 is connected to the third seal portion 55 of the piston valve 50.
Is blocked by hitting the top plate portion 32 of the piston body 30, and is opened when the third seal portion 55 is separated from the top plate portion 32 to open the first flow path 35 and the third flow path 4
6 is connected.

In this embodiment, the piston body 30 and the piston valve 50 form a piston. A stopper 60 is fixed to the inside of the upper edge of the large-diameter cylindrical portion 11 of the cylinder 10 to prevent the stem 40 and the piston valve 50 from coming out of the cylinder 10 upward.

The stopper 60 has a cylindrical shape, and the stem 40
From the mouth portion 61, a mouth portion 61 through which the small diameter cylinder portion 41 is inserted, and a piston valve braking portion (piston braking portion) 62 that extends downward from the mouth portion 61 and is inserted into the large diameter cylinder portion 11 of the cylinder 10. A flange portion 63 protruding outward in a ring shape, and a plurality of vertical ribs 64 provided on the inner peripheral surface of the upper portion of the piston valve braking portion 62 at equal intervals in the circumferential direction are provided.

In the stopper 60, the flange 63 is attached to the cylinder 10.
The piston valve braking portion 62 is fixed to the cylinder 10 by abutting it on the flange portion 13 and fitting the piston valve braking portion 62 into the large-diameter cylindrical portion 11 of the cylinder 10.

The piston body 30 and the stem 40 are urged upward by the spring 90, but the upper end of the outer annular portion 51 of the piston valve 50 hits the lower end of the piston valve braking portion 62 of the stopper 60 so that the piston valve 50 moves. The upper limit is regulated. At this time, the stem 40
A slight gap is formed between the upper end of the outer peripheral surface of the large-diameter cylindrical portion 42 and the lower end of the vertical rib 64. Therefore, cylinder 1
By fixing the stopper 60 to 0, the piston body 30 and the stem 40 can be prevented from jumping out from the cylinder 10.

FIG. 4 shows a state in which the suction valve 20, the piston body 30, the stem 40, the piston valve 50, the spring 90 and the discharge valve 91 are incorporated in the cylinder 10 and the stopper 60 is attached to form an intermediate unit. When the pump intermediate unit 100 is set in this way, the respective members will not come apart and the piston body 30 and the stem 40 will not jump out of the cylinder 10.

The pump intermediate unit 100 is attached to the cap 70, and the pump head 80 is attached to the upper end of the stem 40 to complete the pump device. Cap 70
Is provided with a screw cylinder portion 71 that is screwed into the mouth cylinder portion 2 of the container 1, and a neck cylinder portion 73 that stands upward from the top plate portion 72 of the screw cylinder portion 71. Is provided with a hooking protrusion 74.

The pump intermediate unit 100 includes a stem 40
The small-diameter tubular portion 41 of the cylinder 10 is inserted into the neck tubular portion 73, the flange portion 13 of the cylinder 10 is inserted into the screw tubular portion 71 of the cap 70, and is abutted against the top plate portion 72, and the outer peripheral edge of the lower end of the flange portion 13 is locked. By engaging with the protrusion 74, the cap 70
Can be attached to.

The pump head 80 is connected to the inside of the inner tubular portion 81, the inner tubular portion 81 into which the upper portion of the small diameter tubular portion 41 of the stem 40 is fitted, the outer tubular portion 82 surrounding the outer side of the inner tubular portion 81. The pouring nozzle 83 which penetrates the outer cylinder part 82 and protrudes outward is provided, and the front-end | tip of the pouring nozzle 83 is opening as the pouring outlet 84. The inner cylinder part 81 and the outer cylinder part 82 are arranged so that the neck cylinder part 73 of the cap 70 can enter between them, and when the pump head 80 is at the upper limit position, the outer cylinder part 8 is arranged.
The dimension is set so that the lower end of 2 is located slightly lower than the upper end of the neck tube portion 73.

Then, the cap 70 and the pump head 8
In the pump intermediate unit 100 to which 0 is attached, the cylinder 10 is inserted from the mouth tube portion 2 and the cap 70 is screwed into the mouth tube portion 2, whereby the flange portion 13 and the packing 92 attached to the lower surface thereof are attached to the cap 70. The top plate portion 72 and the upper end of the mouth tube portion 2 are clamped and fixed to the container 1.

FIG. 1 shows a state before the pump head 80 is pushed down. At this time, the stem 40 and the piston body 30 are located at the upper limit, and the third seal portion 55 of the piston valve 50 is the top plate portion of the piston body 30. The second flow path 37 is closed by being in contact with 32.

When the pump head 80 is pushed down from this state to lower the stem 40 and the piston main body 30 against the elasticity of the spring 90, the piston valve 50 causes the first seal portion 52 and the cylinder 10 at the initial stage of the lowering. It is stationary due to friction with the inner peripheral surface of the stem 4
Only 0 and the piston body 30 descend. As a result, the third seal portion 55 of the piston valve 50 separates from the top plate portion 32 to open the second flow passage 37, and the first flow passage 35 and the third flow passage 35 are opened.
The flow path 46 communicates with the second flow path 37.

After the lower end of the large-diameter cylindrical portion 42 of the stem 40 hits the piston valve 50, the piston valve 50 descends integrally with the piston body 30 and the stem 40, and the piston body 30 and the stem 40 are separated. The open state of the second flow path 37 is maintained until the lower limit is reached.

When the piston body 30 descends, the pump chamber 1
The inside of 9 is pressurized, and the suction valve 20 is pushed down by this pressure, the valve body 21 is seated on the valve seat 14, and the suction port 15 is closed.

When the suction port 15 is closed, the piston main body 30 is lowered to allow the contents in the pump chamber 19 to flow into the first flow path 3.
5, it is pushed out to the pouring passage 44 of the stem 40 through the second flow path 37 and the third flow path 46, and the discharge valve 91 is pushed up,
It is poured out from the pouring outlet 84 through the pouring nozzle 83 of the pump head 80. FIG. 2 shows a state in which the pump head 80 is pushed down and the piston body 30 and the stem 40 are positioned at the lower limit.

Next, when the hand is released from the pump head 80,
The piston body 30 and the stem 40 are pushed up by the elasticity of the spring 90. At the initial stage of the rise, the piston valve 50 is stationary due to the friction between the first seal portion 52 and the inner peripheral surface of the cylinder 10, and only the stem 40 and the piston body 30 rise. As a result, the piston body 30
The top plate portion 32 of the
Then, the second flow path 37 is closed.

After the top plate portion 32 hits the third seal portion 55, the piston valve 50 rises together with the piston body 30 and the stem 40, and the piston body 30 and the stem 40 reach the upper limit position. Until
The closed state of the second flow path 37 is maintained.

When the piston body 30 rises, the pump chamber 1
The inside of 9 becomes a negative pressure state, the suction valve 20 is lifted by this negative pressure, the valve body 21 separates from the valve seat 14, and the suction port 15 opens. After the suction port 15 is opened, the piston body 3
With the increase of 0, the content in the container 1 is pumped up from the suction port 15 into the pump chamber 19.

In the present embodiment, the discharge valve 91 is seated on the valve seat 43 to shut off the outside air when the pump head 80 is raised, but when the discharge valve 91 is not provided, the pump head 80 is raised. Sometimes pump head 8 including spout 84
The contents in 0 are drawn into the pump.

When assembling this pump device, the pump intermediate unit 100 can be unitized at a stage before mounting the cap 70 and the pump head 80. The process can be divided into the process and the process thereafter. As a result, the assembling work can be efficiently performed, and the productivity is improved.

Further, only the color and shape of the cap are different,
When assembling a pump device having the same shape, size, and structure for the pump intermediate unit 100, the pump intermediate unit 100 is a common component, so the pump intermediate unit 100 is assembled without paying attention to the difference in the cap 70. be able to. This greatly contributes to improvement of work efficiency and productivity.

In the case of the pump device of this embodiment,
The outer cylinder part 82 of the pump head 80 is located outside the neck cylinder part 73 of the cap 70, and the lower end of the outer cylinder part 82 is located below the upper end of the neck cylinder part 73. Even if water is splashed, there is an advantage that this water does not easily enter the inside of the pump device through the upper opening of the neck cylinder portion 73.

Further, in the case of the pump device of this embodiment, the stopper 95 having a C-shaped cross section shown in FIG. 5 is provided with the top plate portion 72 of the cap 70 and the pump head 80 as shown in FIG.
By mounting the pump head 80 between the outer cylinder part 82 and the outer cylinder part 82, it is possible to prevent the pump head 80 from being pushed down and prevent inadvertent pouring.

[Second Embodiment] FIGS. 6 and 7 are views showing a pump device according to a second embodiment of the present invention. FIG. 6 is an overall assembly view showing a partially broken view, 7 is a half sectional view of the pump intermediate unit 100.

The pump device of the second embodiment has the same basic configuration as that of the first embodiment, and in the following description, only the differences from the first embodiment will be described. Parts that are the same as those in the first embodiment are given the same reference numerals in the drawings and description thereof is omitted.

In the pump device according to the second embodiment, the neck cylinder portion 73 of the cap 70 is the outer cylinder portion 82 of the pump head 80.
The outer edge of the flange portion 63 of the stopper 60 extends outwardly longer than that in the first embodiment.

Also in the pump device of the second embodiment, the pump intermediate unit 100 can be assembled as shown in FIG. 7, which greatly contributes to improvement of work efficiency and productivity.

[0065]

As described above, according to the present invention,
By providing the stopper fixed to the inner edge of the upper portion of the cylinder, the container pump can be made into an intermediate unit before the cap is attached, and the assembly process of the container pump device can be divided. As a result, work efficiency is improved and productivity is improved.

In the case of assembling a container pump device having only different cap specifications, the intermediate unit is a common component, so that the intermediate unit can be assembled without paying attention to the difference in the cap. As a result, work efficiency is improved and productivity is improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a first embodiment of a container pump device of the present invention, showing a state in which a pump head is located at an upper limit.

FIG. 2 is a vertical cross-sectional view of the first embodiment of the container pump device according to the present invention, showing the state in which the pump head is located at the lower limit.

FIG. 3 is a transverse cross-sectional view of the sliding portion of the piston body and the stem in the first embodiment of the container pump device of the present invention.

FIG. 4 is a half sectional view of a pump intermediate unit in the first embodiment of the container pump device of the present invention.

FIG. 5 is an external perspective view of a malfunction preventing stopper in the first embodiment of the container pump device of the present invention.

FIG. 6 is a view showing a second embodiment of the container pump device of the present invention, and is an assembly view showing a part of the device in a broken manner.

FIG. 7 is a half sectional view of a pump intermediate unit in the second embodiment of the container pump device of the present invention.

[Explanation of symbols]

 1 Container 2 Port Cylinder 10 Cylinder 13 Flange 15 Suction Port 19 Pump Chamber 20 Suction Valve 21 Valve Disc 22 Guide Rod 30 Piston Main Body (Piston) 31 Partition Part 33 Shaft Cylinder (Shaft) 35 First Channel 37 2 flow passage 40 stem 44 pouring passage 46 third flow passage 50 piston valve 52 first seal portion 54 second seal portion 55 third seal portion 60 stopper 62 piston valve braking portion (piston braking portion) 64 vertical rib 70 cap 80 Pump head 84 Spout 90 Spring

Claims (5)

[Claims] (A) A hollow cylindrical shape, the inside of which is a pump chamber, and a suction port which is connected to the pump chamber is provided in the lower part, and is inserted into the container from the mouth cylinder part of the container. A cylinder having a flange portion mounted on the upper end, (b) a piston provided in the cylinder so as to be able to move up and down, and expanding and contracting the pump chamber, and (c) a mouth tube portion screwed into the mouth tube portion of the container. (D) It has a hollow cylindrical shape with a cap that clamps and fixes the flange portion of the cylinder in cooperation with each other, and the inside is a pouring passage that connects to the pump chamber, and the lower portion can be vertically moved into the cylinder. A stem having an upper part protruding from the cylinder, and a pump head having a spout attached to the upper end of the stem and pouring out the content in the spout passage of the stem; (F) Fixed to the inner edge of the upper part of the cylinder And a stopper for preventing the stem from coming off the cylinder, the piston is lowered to pressurize the pump chamber, the contents of the pump chamber are delivered to the pouring passage of the stem, and the piston is raised to raise the container. A container pump device characterized in that the contents therein are pumped up from a suction port of a cylinder into a pump chamber. 2. The container pump device according to claim 1, wherein the stopper has a piston braking portion that restricts an upward movement of the piston. 3. (a) A hollow cylindrical shape, the inside of which is a pump chamber, and a suction port connected to the pump chamber is provided in the lower part, and the suction cylinder part of the container is inserted into the container. A cylinder for mounting a flange portion on the upper end; (b) a cap screwed into the mouth cylinder portion of the container to clamp and fix the flange portion of the cylinder in cooperation with the mouth cylinder portion; A suction valve that allows the inflow into the pump chamber from the suction port and blocks the outflow from the pump chamber into the container; and (d) a partition wall that is mounted in the cylinder so that it can move up and down and that partitions the pump chamber. Then, the shaft portion stands upward from the partition wall portion, and the piston main body having the first flow path communicating with the pump chamber is provided between the outer peripheral surface of the partition wall portion and the inner peripheral surface of the cylinder; None, the inside is a pouring passage, and the lower part can be moved up and down inside the cylinder. The upper part of the piston body is inserted through the lower opening, and a third flow path is formed between the outer peripheral surface of the shaft part and the pouring passage. A stem connected and fixed to the shaft,
(F) It has an annular shape and is arranged between the inner peripheral surface of the cylinder and the outer peripheral surface of the shaft portion of the piston body, and extends along the axial direction between the partition wall portion of the piston body and the lower end of the stem. A second flow passage that is movably mounted and that communicates with the first flow passage and the third flow passage is formed between the piston main body and the outer peripheral surface of the shaft portion of the piston main body, and the second flow passage that press-contacts and slides on the inner peripheral surface of the cylinder. A piston valve having a first seal portion and a second seal portion that slides in pressure contact with the inner peripheral surface of the lower portion of the stem and a third seal portion that abuts on the partition wall portion of the piston main body to shut off the first flow passage and the second flow passage. When,
(G) a spring installed between the cylinder and the piston body to urge the piston body upward, and (h) a stopper fixed to the upper inner edge of the cylinder to prevent the stem from coming off from the cylinder. (I) a pump head that is fixed to the upper end of the stem and has a spout for pouring out the contents in the spout passage of the stem; and The third seal portion is separated from the partition wall portion of the piston body, the pump chamber and the pouring passage of the stem communicate with each other through the first flow passage, the second flow passage, and the third flow passage, and from the pouring outlet of the pump head. When the pump head, stem, and piston body rise, the third seal portion of the piston valve comes into contact with the partition wall portion of the piston body and the first flow path and the second flow passage
A pump device for a container, characterized in that a flow path is blocked, a suction valve is opened, and contents in the container are pumped up from a suction port of a cylinder into a pump chamber. 4. The suction valve includes a valve body that opens and closes a suction port of the cylinder, and a guide rod that extends upward from the valve body, and the shaft portion of the piston body has a hollow cylindrical shape and is a partition wall portion. The guide rod of the suction valve is inserted into the hollow portion of the shaft portion through the opening, and the guide rod of the suction valve is inserted into the hollow portion of the shaft portion in a sealed state so that the guide rod can be relatively moved up and down. A pump device for a container according to. 5. The container pump device according to claim 3, wherein the stopper has a piston valve braking portion that restricts an upward movement of the piston valve.