JP2000333846A - Stopper for liquid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily hold the opening state of a cover member and a valve body. SOLUTION: The turning center of a cam element 18 integrally formed on a cover member 7 for opening/closing an outlet 5b of a pouring passage 5 is positioned on an opening line O at the time of vertically operating a valve body 6 to be vertically operated by the turning displacement of the cam element 18 and when a distance between a maximum lower operating point P on a first cam plane 18a of the cam element 18 and the turning center of the cam element 18 is defined as R1 and a distance between a second cam plane 18b of the cam element 18 and the turning center of the cam element 18 is defied as R2, the condition of R1<=R2 is set. Thus, when the cover member 7 is opened, an energizing force to be operated upon the valve body 6 opened by the pressure of the cam element 18 does not exert a moment upon the cam element 18 and even when the cam element 18 is over turned, the valve body 6 is not displaced upward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper device for a liquid container such as a thermos bottle.

[0002]

2. Description of the Related Art As a well-known plug device for a liquid container, a valve for opening and closing an inlet of a liquid injection passage formed in a plug is pivotally supported so as to be rotatable with respect to the plug. The opening and closing operation is performed by the rotational displacement of the cam surface of the operating lever, and the position of the operating lever is regulated at an open position where the cam surface slightly exceeds the pressing dead center of the valve body opening. (See Japanese Utility Model Laid-Open No. 3-81041).

[0003]

In the liquid container stopper device of the above-mentioned known example, the position of the operating lever is regulated at an open position where the cam surface slightly exceeds the pressing dead center of the valve body opening. In addition, it is necessary to displace the rotation center of the operation lever and the operation line at the time of the vertical movement of the valve body in the horizontal direction. Then, a moment acts on the operation lever by the spring that is urging the valve body upward (that is, in the closing direction) in the open state of the valve body. Therefore, if an assembly error occurs in the valve body and the operating lever, or if the valve body is shaken when the valve body moves up and down, it may be difficult to regulate the position of the operating lever due to the moment. Further, in the above-mentioned known example, the outlet of the liquid injection passage is closed by being fitted with a cup. However, when the glass is removed, dust or insects enter through the liquid injection passage. There is a risk.

The present invention has been made in view of the above-mentioned point, and has an additional function which acts on a valve element which is opened by a pressing force of a cam piece when a cover member for opening and closing an outlet of a liquid injection passage is opened. An object of the present invention is to prevent a momentum from exerting a moment on a cam piece and to easily maintain an open state of a cover member and a valve body.

[0005]

According to the first aspect of the present invention, as a means for solving the above-mentioned problems, the present invention is removably mounted on a container body and opens to an inlet opening inside the container body and the outside air. A plug body formed with a liquid injection passage having an outlet, wherein the plug body opens and closes an inlet of the liquid injection passage by a vertical movement and is urged in a normally closed direction; In a liquid container stopper device provided with a cover member that opens and closes an outlet of a liquid passage by an arc rotation operation, a cam piece that opens the valve body when the cover member is opened is integrated with the cover member. The cam piece is formed and the rotation center of the cam piece is positioned on an operation line at the time of the vertical movement of the valve body, and the contact surface of the cam piece with the valve body is moved to the maximum lower position. A first cam surface to be moved down to Constituted by a second cam surface extending from the lower end face upwards, the distance between the center of rotation of submaximal moving points and the cam piece of the first cam surface R _1, the second cam surface and the cam piece times When the distance from the moving center is R ₂ , R ₁ ≦ R ₂
Is set to

[0006] With the above construction, when the cover member for opening and closing the outlet of the liquid injection passage is opened, the urging force acting on the valve element opened by the pressing force of the cam piece exerts a moment on the cam piece. Does not act, and the cover member and the valve body can be easily maintained in the open state. In addition, even if the cover member is operated excessively, the valve element opened by the cam piece remains open or moves only in the opening direction, so that the valve element can secure an open area. . Further, even if the stopper is made compact, an appropriate liquid injection passage outlet and an appropriate operation section can be secured.

[0007] As in the invention of claim 2, claim 1
5. A stopper device for a liquid container according to claim 1, further comprising an operation member for opening and closing said cover member by a vertical movement, and a restricting means for holding an open state of said cover member between said operation member and said cover member. Is provided, the open state of the cover member is more reliably maintained.

[0008] As in the invention of claim 3, claim 1
In the liquid container stopper device according to any one of (2) and (3), when the cover member is integrally formed with a spindle serving as a rotation center, the number of parts is reduced, and the number of assembly steps is reduced. Contribute to cost reduction.

As in the invention of claim 4, claim 2
5. The stopper device for a liquid container according to any one of claims 4 and 4, wherein the restricting means is integrally formed with an engagement recess formed in an operation portion of the cover member, and the operation member,
When the operation member is constituted by the engagement rib which engages with the engagement recess when the operation member is moved down, the structure of the regulating means can be simplified. Since the holding of the open state is not regulated by the engagement force between the valve element and the cam piece, the holding of the open state can be stabilized.

According to a fifth aspect of the present invention, in the stopper device for a liquid container according to any one of the second, third and fourth aspects, a guide rail for guiding the operation member when the operation member moves up and down is provided on the stopper. When formed, the operation member can be moved up and down smoothly.

[0011] As in the sixth aspect of the present invention, in the liquid container stopper device according to any one of the first, second, third, fourth and fifth aspects, the cover member and the operating member are attached to the stopper body. When the support member is detached from the stopper and attached to a support member that constitutes a part of the wall surface of the liquid injection passage, the inside of the stopper is opened and the brush can be cleaned. Becomes Therefore, the user of the liquid container can satisfy the clean feeling more than before.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 4 show a stopper device for a liquid container according to a first embodiment of the present invention.

As shown in FIG. 1, the stopper device for a liquid container is a container body 1 made of a vacuum double container made of stainless steel.
Can be detachably attached to the spout 2 of the first embodiment.
Reference numeral 3 denotes a cup which is screwed on and off to cover the outside of the spout 2.

The stopper device is mounted on a spout 2 of the container body 1 in a detachable manner and has an inlet 5a communicating with the inside of the container body 1 and an outlet 5b opening to the outside. A plug 4 formed with the plug 4
A valve member 6 that opens and closes an inlet 5a of the liquid injection passage 5 by a vertical movement and is urged in a normally closed direction, and a cover member that opens and closes an outlet 5b of the liquid injection passage 5 by an arc rotation operation. And an operating member 8 for opening and closing the cover member 7 by a vertical movement.

The plug body 4 is a bottomed cylindrical plug body 4a having a screw portion 9 which is screwed into the container main body spout 2.
And a valve support cylinder 4b which is integrally erected from the center of the bottom of the plug body 4a and serves as a guide when the valve body 6 moves up and down.

The liquid injection passage 5 is surrounded by the plug body 4a, the valve support tube 4b, and a connecting portion 4c connecting the plug body 4a and the valve support tube 4b. Partially formed in the vertical direction. Thus, the direction of liquid injection at the time of liquid injection can be specified. Reference numeral 10 denotes an air intake hole at the time of liquid injection.

At the lower end of the plug body 4a, there is provided a seal packing 11 for ensuring a sealing property with the lower end of the container body spout 2 and the valve body 6.

The valve element 6 is in contact with the seal packing 11 to open and close the inlet 5a of the liquid injection passage 5.
a and a valve stem 6b extending upward from the center of the valve stem 6a and positioned in the valve support cylinder 4b. An annular locking formed at the upper end of the valve stem 6b. Part 6
c and the valve support cylinder 4b
Are supported by a spring 13 interposed between the bottom and the bottom (in a state urged in the closing direction). The valve 6 is located at the center of the plug 4. At the bottom of the valve support cylinder 4b, a guide cylinder 14 whose upper end is slidably contacted with the outer periphery of the valve body valve rod 6b is integrally protruded. Up and down movement can be performed smoothly. Further, a vertical rib 15 for smoothly guiding the spring receiver 12 when the valve body 6 moves up and down is formed on the inner peripheral surface of the valve support cylinder 4b. Reference numeral 26 denotes a seal packing for sealing between the guide cylinder 14 and the valve stem 6b.

The cover member 7 comprises a cover portion 7a for opening and closing the outlet 5b of the liquid injection passage 5, and an operation portion 7b located on the opposite side of the support shaft 16 which is the center of rotation of the cover member 7. ing. The support shaft 16 is formed integrally with the cover member 7, and is positioned on an operation line O (in other words, on the center line of the plug 4) when the valve body 6 moves up and down. 17 is rotatably supported.

On the lower surface of the cover member 7, a cam piece 18 for pressing the upper end of the valve rod 6b of the valve body 6 to open the valve body 6 when the cover member 7 is opened is integrally formed. Is formed. The contact surface of the cam piece 18 with the valve body valve stem 6b includes a first cam surface 18a for moving the valve body 6 down to a maximum lowering position, and an upper portion from a lower end of the first cam surface 18a. A second cam surface 18b extending from the first cam surface 18a, a distance between the maximum lower movement point P and the center of rotation of the cam piece 18 is R ₁ , and the second cam surface 1
8b and the distance between the center of rotation of the cam piece 18 when the R _2, is set to R ₁ = R _2. As shown in FIG. 5, R ₁ <R ₂ may be set. When R ₁ = R ₂ , the valve 6 does not move downward even when the cam piece 18 is over-rotated, and when R ₁ <R ₂ , the valve piece 6 Although the valve element 6 is displaced downward during excessive rotation, the open area of the valve element 6 is ensured in any case.

When the cover member 7 closes the injection passage outlet 5b, a clearance is provided between the upper end of the valve rod 6b of the valve body 6 and the first cam surface 18a of the cam piece 18. In this case, the valve element 6 is moved to the upper limit (ie,
The cover member 7 will not be closed before reaching the (closed state), and the valve body 6 can reliably close the liquid inlet passage inlet 5a.

Further, on the upper surface of the operating portion 7b of the cover member 7, an engagement concave portion 19 is formed which constitutes one side of the regulating means A for holding the cover member 7 open.

The operating member 8 has a substantially rectangular shape. The lower surface of the operating member 8 presses the operating portion 7b of the cover member 7 during downward movement and engages with the engaging recess 19 at the lower limit. The engagement rib 20 is formed integrally.
The engaging rib 20 constitutes the other side of the regulating means A for keeping the cover member 7 open. On both sides of the operation member 8 are integrally formed projections 22 which engage with guide rails 21 formed on the inner surface of the plug 4 to smoothly move the operation member 8 up and down. Reference numeral 8a denotes a stopper that restricts rotation of the operation portion 7b when the cover member 7 is in the closed state.

On the inner peripheral surface of the plug body 4a of the plug body 4, a regulating rib 23 for regulating the operation member 8 from being pushed down too much is integrally formed.

In the drawings, reference numeral 24 denotes a lid which is the upper surface of the plug 4.

The stopper device for a liquid container constructed as described above operates as follows.

As shown in FIG. 2, when the cover member 7 closes the injection passage outlet 5b, the cam piece 18 is closed.
And the upper end of the valve body valve stem 6b is in a non-contact state,
The valve body 6 is closed by the urging force of the spring 13.

As shown in FIG. 3 from the state shown in FIG. 2, when the operating member 8 is pressed down by a finger, the engaging rib 2 of the operating member 8 is pressed.
0, the operating portion 7b of the cover member 7 is moved by the arrow M
The cover portion 7a of the cover member 7 opens the liquid injection passage outlet 5b, and the rotation of the cam piece 18 causes the valve body valve rod portion 6b to be pushed down against the urging force of the spring 13. , The valve element 6 is opened. At this time,
The engagement rib 20 of the operation member 8 is engaged with the engagement recess 1 of the cover member 7.
9 and the open state of the cover member 7 is held by the engaging force.

In this state, the spring 13 acting on the valve element 6 opened by the pressing force of the cam piece 18
Does not cause a moment to act on the cam piece 18. Therefore, it is not necessary to provide a restricting means for holding the open state of the cover member 7 and the valve body 6. However, in the present embodiment, in order to more reliably hold the open state of the cover member 7 and the valve body 6. In this case, a regulating means A having a small regulating force (that is, a means utilizing the engaging force between the engaging recess 19 and the engaging rib 20) is used.

After the valve element 6 is moved down by the first cam surface 18a by the rotation of the cam piece 18, no vertical displacement of the valve element 6 occurs after the maximum downward movement of the valve element 6. Thus, it is easy to secure the open state of the valve body 6.

When the cup 3 is attached to the spout 2 of the container body 1 from the state shown in FIG. 3, the cover member 7 is closed by the pressing force of the cup 3 and the valve 6 is also closed.

Further, in this embodiment, the spindle 1
6 is positioned on the operation line O (in other words, on the center line of the plug 4) at the time of the vertical movement of the valve 6, the plug 4
, The liquid injection passage outlet 5b and the operation member 8 can be made to have appropriate sizes.

Second Embodiment FIG. 6 shows a stopper device for a liquid container according to a second embodiment of the present invention.

In this case, the operating member 8 is formed integrally with the operating portion 7b of the cover member 7. In this case, no regulating means for holding the open state of the cover member 7 is provided. However, in the open state of the cover member 7, the spring 1 acting on the valve element 6 opened by the pressing force of the cam piece 18.
Since the biasing force of No. 3 does not cause a moment to act on the cam piece 18, the open state of the cover member 7 is maintained by the contact force between the cam piece and the valve stem 6 b. In this way, the number of parts can be reduced and the number of assembling steps can be reduced. The other configuration and operation and effect are the same as those in the first embodiment, and thus the description is omitted.

Third Embodiment FIGS. 7 to 9 show a stopper device for a liquid container according to a third embodiment of the present invention.

In this case, the cover member 7 and the operation member 8
Is attached to a substantially cylindrical support member 25 which can be detachably screwed to the valve support cylinder 4b of the plug 4 and forms a part of the wall surface of the liquid injection passage 5. The support member 25
Is a bottomed cylindrical support 25a to which the cover member 7 and the operation member 8 are assembled, and a screw cylinder 25b having an internal screw 31 screwed to an external screw 30 formed in the valve support cylinder 4b. An opening 32 is formed at the bottom of the support portion 25a so that the upper portion of the valve stem 6b of the valve body 6 can be seen. Reference numeral 27 denotes a seal packing for sealing between the valve body valve stem 6b and the bottom opening 32 of the support portion 25a of the support member 25. By doing so, if the support member 25 is detached from the valve support cylinder 4b of the plug 4, the inside of the plug 4 is opened as shown in FIG. 7, and brush cleaning becomes possible. Therefore, the user of the liquid container can satisfy the clean feeling more than before. The other configuration and operation and effect are the same as those in the first embodiment, and thus the description is omitted.

Fourth Embodiment FIG. 10 shows a stopper device for a liquid container according to a fourth embodiment of the present invention.

In this case, a seal member 28 is attached to the cover portion 7a of the cover member 7 in the third embodiment to seal the injection passage outlet 5b when the cover member 7 is closed. The seal member 28 has an inverted conical shape, and is pressed against an inclined surface 29 formed in the liquid injection passage outlet 5b when the cover member 7 is closed. In this case, since it is necessary to seal the liquid injection passage outlet 5b with the seal member 28, the first cam surface 18 of the cam piece 18 in the closed state of the cover member 7.
The valve stem 6b of the valve body 6 is pressed against a by the urging force of the spring 13. Even in this case, since the seal member 28 is elastically deformed, the valve body 6 does not reach the upper limit (that is, the closed state). In this manner, when the cover member 7 is in the closed state, the liquid injection passage outlet 5b is reliably closed by the seal member 28, and leakage of the content liquid through the liquid injection passage 5 does not occur. The other configuration and operation and effect are the same as those in the first and second embodiments, and thus the description is omitted.

[0040]

According to the first aspect of the present invention, a plug body which is detachably mounted on the container body and has therein a liquid injection passage having an inlet communicating with the inside of the container body and an outlet opening to the outside air. The plug has a valve body which is opened and closed by an up-down movement of an inlet of the liquid injection passage and a valve body which is normally urged in a closing direction, and an outlet of the liquid injection passage which is opened and closed by an arc rotation operation. In the stopper device for a liquid container provided with a cover member, a cam piece for opening the valve body when the cover member is opened is formed integrally with the cover member, and the center of rotation of the cam piece is A first cam surface for positioning the valve element on the operation line at the time of the vertical movement, and for bringing the contact surface of the cam piece into contact with the valve element to lower the valve element to a maximum lowering position; Second extending upward from the lower end of one cam surface
The distance between the maximum lowering point on the first cam surface and the rotation center of the cam piece is R ₁ , and the distance between the second cam surface and the rotation center of the cam piece is R ₂ . When R ₁ ≦
Since the set R _2, the biasing force acting on the opening actuated valve body by the pressing force of the cam piece when the cover member for opening and closing the outlet of the liquid injection passageway was opening operation exerts a moment on the cam piece This has the effect that the cover member and the valve element can easily be kept open. In addition, even if the cover member is excessively operated, the valve element opened by the cam piece remains open or moves only in the opening direction, so that the valve element can secure an open area. There is also an effect. In addition, even if the stopper is made compact, there is an effect that a proper liquid injection passage outlet and a proper operation unit can be secured.

As in the invention of claim 2, claim 1
5. A stopper device for a liquid container according to claim 1, further comprising an operation member for opening and closing said cover member by a vertical movement, and a restricting means for holding an open state of said cover member between said operation member and said cover member. Is provided, the open state of the cover member can be more reliably maintained.

As in the invention of claim 3, claim 1
In the liquid container stopper device according to any one of (2) and (3), when the cover member is integrally formed with a spindle serving as a rotation center, the number of parts is reduced, and the number of assembly steps is reduced. Contribute to cost reduction.

As in the invention of claim 4, claim 2
The stopper device for a liquid container according to any one of claims 3 and 3, wherein the regulating means is integrally formed with an engagement recess formed in an operation portion of the cover member, and the operation member,
When the operation member is constituted by the engagement rib which engages with the engagement recess when the operation member is moved down, the structure of the regulating means can be simplified. Since the holding of the open state is not regulated by the engagement force between the valve element and the cam piece, the holding of the open state can be stabilized.

According to a fifth aspect of the present invention, in the stopper device for a liquid container according to any one of the second, third and fourth aspects, a guide rail for guiding the operation member when the operation member moves up and down is provided on the stopper. When formed, the operation member can be moved up and down smoothly.

As in the sixth aspect of the present invention, in the liquid container stopper device according to any one of the first to third aspects, the cover member and the operation member are attached to the stopper body. When the support member is detached from the stopper and attached to a support member that constitutes a part of the wall surface of the liquid injection passage, the inside of the stopper is opened and the brush can be cleaned. Becomes Therefore, the user of the liquid container can satisfy the clean feeling more than before.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a liquid container provided with a stopper device according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a valve closing state of the liquid container stopper device according to the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view showing a valve-open state of the stopper device for the liquid container according to the first embodiment of the present invention.

FIG. 4 is a plan view of the liquid container stopper device according to the first embodiment of the present invention.

FIG. 5 is an explanatory view showing the relationship between the cam piece and the valve stem in the stopper device for a liquid container according to the first embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing a valve closing state of a stopper device for a liquid container according to a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view showing a valve closing state of a stopper device for a liquid container according to a third embodiment of the present invention.

FIG. 8 is a vertical sectional view showing a valve-open state of a stopper device for a liquid container according to a third embodiment of the present invention.

FIG. 9 is a longitudinal sectional view showing an exploded state of a stopper device for a liquid container according to a third embodiment of the present invention.

FIG. 10 is a longitudinal sectional view showing a valve closing state of a stopper device for a liquid container according to a fourth embodiment of the present invention.

[Explanation of symbols]

1 is a container body, 2 is a spout, 4 is a plug, 5 is a liquid injection passage,
5a is an inlet, 5b is an outlet, 6 is a valve body, 7 is a cover member,
8 is an operating member, 13 is a spring, 16 is a support shaft, 18 is a cam piece, 18a is a first cam surface, 18b is a second cam surface, 1
9 is an engagement recess, 20 is an engagement rib, 21 is a guide rail,
22 is a projection, 24 is a support member, A is a regulating means, and P is a maximum lowering point.

Claims (6)

[Claims] 1. A plug which is detachably attached to a container body and has a liquid injection passage formed therein having an inlet communicating with the inside of the container main body and an outlet opening to the outside air. A liquid container provided with a valve body that opens and closes an inlet of the liquid injection passage by a vertical movement and is constantly urged in a closing direction, and a cover member that opens and closes an outlet of the liquid injection passage by an arc rotation operation. Wherein the cover member is integrally formed with a cam piece for opening the valve body when the cover member is opened, and the center of rotation of the cam piece is moved up and down of the valve body. Position it on the operating line during operation,
A contact surface of the cam piece with the valve body is constituted by a first cam surface for lowering the valve body to a maximum lowering position and a second cam surface extending upward from a lower end of the first cam surface. And
When the distance between the maximum lowering point on the first cam surface and the rotation center of the cam piece is R ₁ , and the distance between the second cam surface and the rotation center of the cam piece is R ₂ , R ₁ ≦ R A liquid container stopper device set to ₂ . 2. An operation member for opening and closing the cover member by a vertical movement is provided, and a regulating means for holding the open state of the cover member is provided between the operation member and the cover member. The stopper device for a liquid container according to claim 1, wherein 3. The stopper device for a liquid container according to claim 1, wherein a support shaft serving as a center of rotation is formed integrally with the cover member. 4. An engagement recess formed in an operation portion of the cover member and an engagement recess formed integrally with the operation member, the engagement portion engaging with the engagement recess when the operation member is moved down. The stopper device for a liquid container according to claim 2, wherein the stopper device is constituted by a rib. 5. A stopper device for a liquid container according to claim 2, wherein a guide rail for guiding said operation member when said stopper is moved up and down is formed on said stopper. . 6. The method according to claim 1, wherein the cover member and the operation member are
6. The liquid ejecting apparatus according to claim 1, wherein the plug is detachable from the plug and is attached to a support member that forms a part of a wall surface of the liquid injection passage. The plug device for a liquid container according to claim 1.