JP3144396B2 - Lever type stopper device for liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lever type stopper device for a liquid container.

[0002]

2. Description of the Related Art Referring to FIG. 10, which is a schematic cross-sectional view showing a conventional structure, a liquid container 1 generally represented by a vacuum insulated container has a double-layer container body 2 made of metal such as stainless steel. In addition, a stopper device 3 is attached to the opening 2a of the container body 2.

The stopper device 3 includes a stopper body 3a screwed into the opening 2a of the container body 2, an opening / closing valve 3c for opening / closing a pouring passage 3b formed in the stopper body 3a, and an opening / closing valve 3c. And an operation mechanism 4 for operation. For example, the stopper device proposed by the applicant of the present application (Japanese Patent No. 2638)
No. 519), the operating mechanism 4 is provided so as to be relatively displaceable with respect to the drive rod 4a for driving the on-off valve 3c and the drive rod 4a, and is capable of moving forward and backward with respect to the plug body 3a. And a pair of operation units 4b and 4c. The operation units 4b and 4c are provided concentrically with respect to the drive rod 4a. The operation unit 4b on the inner circumference side constitutes an opening switch for pushing down the drive rod 4a, and the operation unit on the outer circumference side. 4c constitutes a closing switch for pushing up the depressed drive rod 4a. The two operation units 4b and 4c are linked to each other by a holding cam 4d so as to be interlocked. And this holding cam 4d
And the spring 4e, 4f pushes the opening operation unit 4b, thereby opening the on-off valve 3c.
When the closing operation unit 4c is pushed up, both are held, and when the closing operation unit 4c is pushed in, the holding of the on-off valve 3c is released, so that the on-off valve 3c is closed and the opening operation is performed. The part 4b is pushed up.

In the conventional stopper device 3, the opening / closing valve 3c is opened by pushing the opening operation part 4b, and the liquid in the container body 2 can be poured out from the discharge passage 3b. Since the closing operation unit 4c protrudes outward from the plug main body 3a, for example, a cup 5 covering the plug device 3, an inner cup 6 covered by the cup 5, and the like are covered as shown in the configuration of FIG. Only the closing operation unit 4
c is pushed in, and the on-off valve 3c is automatically and reliably closed.

[0005] However, in the push-type plug device as described above, the number of components tends to increase.
Therefore, recently, as shown in Japanese Utility Model Publication No. 7-25153, a plug device having a lever-type operation unit is being developed. FIGS. 11A and 11B are enlarged schematic views showing a main part of an operation unit in a conventional stopper device, wherein FIG. 11A shows a state where the stopper is open, and FIG. 11B shows a state where the stopper is closed.

Referring to FIG. 1, a lever-type stopper device according to a conventional example is provided with a handle-like operation lever 8 which rotates around a horizontal axis 7.
A handle piece 8a for operation by a user, a pressing portion 8b for raising and lowering the drive rod 4a, and a stopper 8c for restricting the amount of rotation protrude. The pressing portion 8b receives the reaction force of the drive rod 4a at all times, and the shaft 7 is moved until it exceeds a preset maximum lowering position.
It is set so as to be urged clockwise in the figure when it is rotated around the axis 7 beyond the maximum lowering position. This is a toggle cam.

[0007] As shown in FIG.
When the pressing portion 8b is pushing down the drive rod 4a by raising the handle piece 8a of the above, the stopper 6c presses the back surface of the cap 9 attached to the plug body at a position where the pressing portion 6 slightly exceeds the maximum lowering position. Thus, the operation lever 8 is held by the reaction force from the drive rod 4a with the handle piece 8a standing upright.

On the other hand, when the handle piece 8a is tilted from the state shown in FIG. 11A, the pressing portion 8b is displaced to a position allowing the drive rod 4a to rise again beyond the maximum lowering position.
As a result, the drive rod 4a returns to the posture shown in FIG. 11B, and the valve body (not shown) closes.

[0009]

In the above-mentioned conventional lever-type plug device, the operating lever provided as the operating portion of the drive rod for driving the open / close valve is held / released beyond the maximum lowering position. Therefore, it is necessary to maintain high processing accuracy and assembling accuracy of individual parts, and productivity is low. Also, due to the nature of the toggle mechanism, when the pressing portion 8b exceeds the maximum downward movement position, the drive rod 4a
Since the load for pushing is reduced, the on-off valve 4c
It is difficult to maintain the quality with less leakage by restricting the urging force of the spring (spring corresponding to the spring 4f in FIG. 10) for urging the spring in the closing direction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a lever type stopper device for a liquid container which has high productivity and quality and is less likely to cause defects.

[0011]

According to the present invention, there is provided a plug body attached to an opening of a liquid container, and a plug sub-body detachably connected to an inner peripheral side of the plug body.
There is an on-off valve having a rod for opening and closing the pouring passage formed by the stopper main body and the stopper sub-body, and a lever for opening and closing the on-off valve provided in the stopper sub-body so as to rotate in an arc. The lever is provided with a slit into which the rod can be introduced, and the slit is provided with a rod pressing portion and a pair of protrusions for locking the rod in a forcibly fitted state. Pushes down the rod, and the pair of projections locks the pushed-down rod in that state at the maximum downward movement position of the pressing portion or at a position not reaching the maximum downward movement position, whereby the open state of the on-off valve is maintained. A lever type stopper device for a liquid container characterized by the above-mentioned.

According to the first aspect of the present invention, the on-off valve is closed when the lever is in the inclined position. Then, when the lever is arc-rotated in the direction in which the lever is raised, the rod pressing portion pushes down the rod and the on-off valve is opened. Also,
The open state of the on-off valve is held by the pair of projections at the maximum downward movement position of the pressing portion or at a position not reaching the maximum downward movement position. That is, the pushed-down rod is forcibly fitted and locked by the pair of projections, and is kept at the pushed-down position.

[0013]

As described above, according to the present invention,
By forming a slit in the lever and providing a pair of protrusions in the slit, the rod is locked by the pair of protrusions before the pressing part of the lever exceeds the maximum lowering position, so that it can be securely connected through the lever. It is possible to hold the on-off valve. Therefore, a more reliable holding structure can be obtained. Also, it can be separated into a plug body and a plug sub-body,
Washing of the stopper device is easy.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. FIG. 1 is a sectional view of a liquid container employing an embodiment of the present invention. Referring to FIG. 1, a liquid container 1 constitutes a container body 2 made of stainless steel, and has a stopper device 10 removably attached to an opening thereof.

FIG. 2 shows a stopper device 10 according to the embodiment of FIG.
It is a perspective view which shows the principal part of (a), the closed state of the stopper,
(B) shows the opening posture of the stopper, respectively. FIG.
FIG. 4 is a sectional view of the plug device 10 according to the embodiment of FIG. 1 in a closed posture, and FIG. 4 is a plug device 1 according to the embodiment of FIG.
FIG. 5 is a cross-sectional view in an open state, and FIG. 5 is a cross-sectional view showing a state where the plug device 10 according to the embodiment of FIG. 1 is disassembled.

First, referring to FIG. 1 and FIG. 5 without FIG. 3, a plug device 10 according to the illustrated embodiment includes a plug main body 12 made of resin. The stopper body 12 is connected to the container body 2.
And a plug sub-body 13 detachably connected to the plug main body 12 on the inner peripheral side. The plug body 12 constitutes a valve case for holding the on-off valve 14 in the illustrated embodiment, and includes a tubular portion 12 a that enters the neck 2 b of the container body 2, a tubular portion 12
a and a flange portion 12f formed on the outer periphery of a.

The cylindrical packing 12a is provided with an annular packing 1 for defining the discharge passage 11a and the opening 11b of the discharge passage 11a.
2b, a cylindrical lower case 12c press-fit into the inner peripheral portion of the annular packing, and a cylindrical upper case 12d joined to the upper end surface of the lower case 12c. On the other hand, the flange portion 12f is formed concentrically so as to continuously cover the upper end side of the outer case 12d from a portion near the upper end of the outer peripheral surface of the upper case 12d. A screw 12e that is screwed to the screw portion 2c (see FIG. 1) is formed.

The lower case 12c of the plug body 12 is integrally formed with a boss 12h concentrically via a plurality of radially extending ribs 12g with the pouring passage 11a released. The annular bottom 12j of 12h forms a spring seat. Inside the boss 12h,
The rod 14a of the on-off valve 14 is introduced. The rod 14a is integrally formed with a spring seat 14b that opens downward in a petal shape in the middle thereof. A coil spring is provided between the lower end surface of the spring seat 14b and the annular bottom 12j of the boss 12h. 15 is interposed to urge the on-off valve 14 in the upper closing direction in the figure. Therefore, when the on-off valve 14 is displaced upward by the urging force of the coil spring 15, the disc-shaped valve element 14c integrally formed at the lower end portion of the rod 14a comes into pressure contact with the lower surface of the annular packing 12b. Thereby, the opening 11b is closed while maintaining the liquid tightness. On the other hand, rod 1
The top of 4a protrudes above the boss 12h, and is pushed down to the lower side of the container body 2 by a lever-type operation member 20, which will be described later.

At the upper end of the outer peripheral surface of the boss 12h, a screw 12k is screwed.
The cylindrical portion 13a of the plug sub-body 13 is screwed into the plug sub-body 13. The plug sub-body 13 constitutes a mechanism case in which the operating member 20 is built in the illustrated embodiment, and includes the cylindrical portion 13a and the neck portion 1 connected to the upper end portion of the cylindrical portion 13a.
3b and a substantially deep dish-shaped main body case 13c contiguous with the upper end of the neck 13b. Further, an inner cylinder 13d is integrally formed concentrically with the inner peripheral portion of the neck portion 13b, and an annular bottom portion 13e of the case 13c is formed.
It is continuous. A seal member 14e attached at an intermediate portion of the rod 14a is provided on an inner peripheral portion of the inner cylinder 13d.
However, they are slidably fitted while maintaining liquid tightness.
In other words, in the illustrated embodiment, the plug main body 12 and the plug sub-body 13 are configured to be separable by the user (FIG. 5).
This allows the stopper device 10 to be easily washed as a whole.

A pair of support members 13g are provided upright on the inner bottom surface of the main body case 13c. 13g of support member
Are plate-like stay pieces parallel to each other, and the operation member 20 is mounted between the support members 13g. 3 to 5, reference numeral 13h denotes a cap which covers the upper end of the main body case 13c of the plug sub-body 13 and exposes only the operation member 20 so as to be operable. Referring to FIG. 2, operation member 20 includes a substantially plate-shaped main body 21 and a pair of supports protrudingly provided on both sides of main body 21 and connected to respective support members 13 g (see FIGS. 3 to 5). A shaft 22 and a lever 23 extending from the upper end of the main body 21 and forming an action point with each support shaft 22 as a fulcrum are integrally provided.

A slit 24 is formed at the lower end of the main body 21, and the main body 21 is formed in a forked shape into which the rod 14a of the on-off valve 14 can be introduced. Further, a pressing portion 25 is formed integrally with the inner ceiling wall 24a that defines the slit 24, and is in sliding contact with the top of the rod 14a introduced into the slit 24. The pressing portion 25 is shown in FIG.
When the operation member 20 is in the closed position shown in FIG.
The rod 14a is allowed to move up to a position where the rod 14a comes into contact with the inner top wall 24a of the slit 24. FIG.
As shown in FIG. 7, the body 14 rotates about the support shaft 22 so that the rod 14a is pushed down and the valve 14c can open the opening 11b.

Here, the pressing portion 2 according to the illustrated embodiment is shown.
5 is configured to push down the rod 14a on the maximum lowering position. Further, the inner wall 14 of the slit 14b
b has a pair of projections 26 formed thereon. Each protrusion 26
Is the on-off valve 1 in which the operating member 20 is open in the illustrated example.
4 is an example of a holding unit that holds the shutter 4 in an open position. Each protrusion 2
6 is provided in such a size that the rod 14a can be inserted between them in a forcibly fitted state. When the operating member 20 is in the closed position shown in FIGS. In FIG. 2, it is locked on the upstream side of the rod 14a.
4B and in the open position of FIG.
The operation member 20 can be maintained in the open position by being locked on the downstream side of the position a.

The lever 23 extends horizontally along the diameter of the container 1 and has one end forming a pressing fulcrum 23a in the opening direction and the other end forming a pressing fulcrum 23b in the closing direction. In the illustrated embodiment, the distance L1 from the center of the support shaft 22 to the pressing fulcrum 23a in the opening direction and the support shaft 2
The ratio to the distance L2 from the center to the pressing fulcrum 23b in the closing direction is set to, for example, about 1: 1.5, so that a greater force acts on the rod 14a when the lever 23 is tilted in the opening direction. Have been. In other words, the user presses the pressing fulcrum 23a with a relatively light force,
The on-off valve 14 can be opened.

In the above arrangement, as shown in FIGS. 2A and 3, when the operating member 20 is in the closed position, the lever 23 of the operating member 20 has its two fulcrums 23a and 23b substantially horizontally opposed. In this state, the main body 21 extends substantially along a vertical line. In this state, the valve element 14 of the on-off valve 14
c closes the opening 11 b by the urging force of the coil spring 15, and the rod 14 a contacts the inner top wall 24 a of the slit 24 formed in the main body 21.

When the pressing fulcrum 23a in the opening direction of the lever 23 is pushed in from this state, the operating member 20 rotates clockwise in FIG.
The inner pressing portion 25 pushes down the rod 14 a of the on-off valve 14 against the urging force of the coil spring 15. As a result, the valve element 14c of the on-off valve 14 is lowered to open the opening 11b, and the inside of the container 1 and the discharge passage 11a can be communicated.

In this open state, the above-mentioned pair of projections 26 as the holding portions are locked to the rod 14a,
The operating member 20 is held in a posture in which the rod 14a is pushed down, and as shown in FIGS. 2B and 4, the lever 23 is inclined to a posture in which the pressing fulcrum 23b in the closing direction floats upward. ing. Therefore, in the illustrated embodiment, the open / closed state of the plug device 10 can be easily recognized visually, and the unnecessary pressing fulcrum 23b in the closing direction which is unnecessary above can be easily pushed down by any method. The operation member 20 and the posture of the on-off valve 14 due to the operation member 20 are returned to the states shown in FIGS.
Can be closed.

As described above, in the above-described embodiment, the number of components can be reduced by constructing the lever-type operation member 20, the visibility and the operability can be improved. Since the pressing portion 25 holds the on-off valve 14 at a position that does not exceed the maximum downward movement position in the opening direction, when the on-off valve 14 is opened, the most effective pressing load based on the lever ratio of the lever 23 is applied to the on-off valve 14. It becomes possible to do. Therefore, the sealing performance of the on-off valve 14 can be improved, and the operability can be improved.

Further, since it is sufficient to hold the actuator at a position not exceeding the maximum lowering position, the tolerance of machining accuracy and assembly accuracy becomes larger than that of the prior art which requires holding the actuator at the position exceeding the maximum lowering position. The performance is improved. The above-described embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment.

FIGS. 6 and 7 are cross-sectional views of a plug device 10 according to another embodiment. Referring to FIG.
In the above-described embodiment, the spring seat 14b is formed integrally with the on-off valve 14. However, the present invention is not limited to this, and the spring seat 14b may be formed of a separate member 114. However, when the spring seat 14b is formed integrally with the rod 14a as in the embodiment shown in FIGS. 1 to 5, there is an advantage that the number of parts can be further reduced and the assembly becomes easy. .

FIGS. 8 and 9 are sectional views showing still another embodiment of the present invention. In these figures, the plug body 12 in the embodiment of FIGS. 6 and 7 is constituted by two annular members 11k and 11m, and an annular space S is provided between the two members.
And the heat insulating material 19 may be interposed. In this configuration, the plug device 10 itself has a heat insulating structure, and there is an advantage that the heat retaining property of the container 1 is enhanced.

The above embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above embodiment. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a liquid container employing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the plug device according to the embodiment of FIG. 1, wherein (A) shows a closed state of the plug and (B) shows an open position of the plug.

FIG. 3 is a sectional view of the stopper device according to the embodiment of FIG. 1 in a closed position.

FIG. 4 is a sectional view of the plug device according to the embodiment of FIG. 1 in an open state.

FIG. 5 is a sectional view showing a state in which the plug device according to the embodiment of FIG. 1 is disassembled.

FIG. 6 is a cross-sectional view of a plug device according to another embodiment in a closed position.

FIG. 7 is a cross-sectional view of the plug device according to the embodiment of FIG. 6 in an open posture.

FIG. 8 is a sectional view of a stopper device according to still another embodiment in a closed position.

9 is a cross-sectional view of the stopper device according to the embodiment of FIG. 8 in an open posture.

FIG. 10 is a schematic sectional view showing a conventional configuration.

11A and 11B are enlarged schematic views showing a main part of an operation unit in a conventional stopper device, wherein FIG. 11A is a state in which the stopper is open, and FIG.
Is the state when the stopper is closed.

FIG. 12 is a schematic sectional view showing a conventional configuration.

FIG. 13 shows a main part of an operation unit in a conventional stopper device.
It is an expansion schematic, (A) is a state in which the stopper is open, (B).
Is the state when the stopper is closed.

[Explanation of symbols]

 10 stopper device 11a pouring passage 12 stopper body 13 stopper sub-body 14 on-off valve 14a rod 14c valve body 15 spring 20 operating member 23 lever 23a pressing fulcrum 23b pressing fulcrum 24 slit 25 pressing part 26 protrusion

Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 41/02 104

Claims (1)

(57) [Claims] 1. A plug main body attached to an opening of a liquid container, a plug sub-body detachably connected to an inner peripheral side of the plug main body, and a spout passage formed by the plug main body and the plug sub-body. An on-off valve having a rod for opening and closing, and a lever for opening and closing the on-off valve provided on the stopper sub-assembly so as to rotate in an arc, and the lever is formed with a slit capable of introducing the rod. ,
The slit is provided with a rod pressing portion and a pair of protrusions for locking the rod in a forcibly fitted state. By opening the lever, the rod pressing portion pushes down the rod, and the maximum lowering position or the maximum of the pressing portion. A lever type stopper device for a liquid container, wherein an open state of an on-off valve is maintained by locking a rod in which a pair of protrusions are pushed down at a position not reaching a downward movement position.