JP3551081B2 - Liquid container stopper device - Google Patents

Description

[0002]
TECHNICAL FIELD OF THE INVENTION
[0003]
The present invention relates to a stopper device for a liquid container such as a thermos bottle.
[Prior art]
[0004]
As a well-known stopper device for a liquid container, a valve body that opens and closes an inlet of a liquid injection passage formed in a stopper body is provided with an operation lever that is rotatably pivotally supported by the stopper body. There is one in which the opening and closing operation is performed by the rotational displacement of the cam surface, and the position of the operation lever is regulated at an open position where the cam surface slightly exceeds the pressing dead center of the valve body opening (actually open flat 3). -81041).
[Problems to be solved by the invention]
[0005]
In the case of the liquid container stopper device of the above-mentioned known example, since the position of the operation lever is regulated at the open position where the cam surface slightly exceeds the pressing dead center of the valve body opening, the rotation center of the operation lever and the valve are controlled. It is necessary to shift the operation line in the horizontal direction from the operation line at the time of vertical movement of the body. Then, a moment acts on the operating 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 element and the operation lever, or if the valve element moves up and down, the position of the operation lever becomes difficult to regulate 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, but when the glass is removed, dust or insects enter through the liquid injection passage. There is a risk.
[0006]
The present invention has been made in view of the above points, and when a cover member that opens and closes an outlet of a liquid injection passage is opened, an urging force acting on a valve element that is opened by a pressing force of a cam piece is applied to a cam. It is an object of the present invention to prevent a moment from acting on a piece and to easily maintain an open state of a cover member and a valve body.
[Means for Solving the Problems]
[0007]
According to the first aspect of the present invention, as a means for solving the above-mentioned problems, a liquid injection passage is provided which is detachably mounted on the container body and has therein an inlet communicating with the inside of the container body and an outlet opening to the outside air. A valve body that opens and closes the inlet of the liquid injection passage by a vertical movement and is urged in a normally closed direction, and an arc-rotating operation of the outlet of the liquid injection passage. In a liquid container stopper device provided with a cover member that opens and closes by an operation member, an operation member that opens and closes the cover member by a vertical movement is attached, and the cover member is provided between the operation member and the cover member. While a regulating means for maintaining the open state is provided, 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 set to the valve body. During vertical movement of A first cam surface for moving the contact surface of the cam piece with the valve body down to a maximum downward movement position, and extending upward from a lower end of the first 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 when a ₂ is set to R ₁ ≦ R _2.
[0008]
With the above configuration, when the cover member that opens and closes the outlet of the liquid injection passage is opened, the urging force that acts on the valve element that is opened by the pressing force of the cam piece acts on the cam piece. And the open state of the cover member and the valve body can be easily maintained. In addition, since the regulating means for maintaining the open state of the cover member is provided between the operating member that opens and closes the cover member by the vertical movement and the cover member, the open state of the cover member can be more reliably maintained. Become. Furthermore, even if the cover member is operated excessively, the valve element opened by the cam piece is kept open or only moves in the opening direction, so that the valve element can secure an open area. . Further, even if the stopper is made compact, a proper liquid injection passage outlet and a proper operation unit can be secured.
[0009]
As in the invention according to claim 2 , in the stopper device for a liquid container according to claim 1 , the restricting means is formed integrally with an engaging recess formed in an operating portion of the cover member and the operating 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 restricted by the engagement force between the valve element and the cam piece, the holding of the open state can be stabilized.
[0010]
As in the invention according to claim 3 , in the stopper device for a liquid container according to any one of claims 1 and 2 , when a guide rail that guides the operation member when the operation member moves up and down is formed on the stopper, the operation is performed. Up and down operation of members can be performed smoothly.
BEST MODE FOR CARRYING OUT THE INVENTION
[0011]
Hereinafter, some preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0012]
First Embodiment FIGS. 1 to 4 show a stopper device for a liquid container according to a first embodiment of the present invention.
[0013]
As shown in FIG. 1, the stopper device for a liquid container is detachably attached to a spout 2 of a container body 1 formed of a vacuum double container made of stainless steel. Reference numeral 3 denotes a cup which is screwed on and off to cover the outside of the spout 2.
[0014]
The stopper device is formed so as to be detachably screwed into the spout 2 of the container body 1 and has a liquid injection passage 5 having an inlet 5a communicating with the inside of the container body 1 and an outlet 5b opening to the outside. The plug 4 includes a valve 6 that opens and closes an inlet 5 a of the liquid injection passage 5 by a vertical movement and is urged in a normally closed direction. A cover member 7 for opening and closing the outlet 5b by an arc rotation operation and an operation member 8 for opening and closing the cover member 7 by an up and down operation are provided.
[0015]
The stopper body 4 is a bottomed cylindrical stopper body 4a having a threaded portion 9 screwed into the container body spout 2, and is integrally erected from a bottom center of the stopper body 4a and the valve is provided. And a valve support cylinder 4b serving as a guide when the body 6 moves up and down.
[0016]
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. It is 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.
[0017]
At the lower end of the plug main body 4a, a seal packing 11 for ensuring the sealing performance with the lower end of the container main body spout 2 and the valve body 6 is provided.
[0018]
The valve body 6 is in contact with the seal packing 11 to open and close the inlet 5a of the liquid injection passage 5, and extends upward from the center of the valve part 6a and is located in the valve support cylinder 4b. A valve stem 6b to be squeezed, between the spring receiver 12 locked by an annular locking portion 6c formed at the upper end of the valve stem 6b and the bottom of the valve support cylinder 4b. It is supported in a state of being urged upward by the interposed spring 13 (in other words, a state of being 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 formed with the guide cylinder 14. Up and down movement can be performed smoothly. Further, a vertical rib 15 for guiding the spring receiver 12 smoothly 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.
[0019]
The cover member 7 includes 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. 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.
[0020]
On the lower surface of the cover member 7, a cam piece 18 for pressing the upper end of the valve rod portion 6b of the valve body 6 to open the valve body 6 when the cover member 7 is opened is integrally formed. ing. The contact surface of the cam piece 18 with the valve body valve stem portion 6b includes a first cam surface 18a for moving the valve body 6 down to a maximum downward movement position, and an upper portion from a lower end of the first cam surface 18a. The distance between the maximum lower movement point P on the first cam surface 18a and the center of rotation of the cam piece 18 is R ₁ , and the second cam surface 18b and the cam piece 18 are extended. Assuming that the distance from the center of rotation is R ₂ , R ₁ = R ₂ . As shown in FIG. 5, R ₁ <R ₂ may be set. When R ₁ = R ₂ , the valve element 6 does not move downward even when the cam piece 18 rotates excessively, and when R ₁ <R ₂ , the cam piece 18 Although the valve element 6 is displaced downward during excessive rotation, the open area of the valve element 6 is ensured in any case.
[0021]
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. This prevents the cover member 7 from being closed before the valve body 6 reaches the upper limit (that is, the closed state), so that the valve body 6 can reliably close the liquid inlet passage inlet 5a. It becomes.
[0022]
Further, on the upper surface of the operation portion 7b of the cover member 7, an engagement concave portion 19 which forms one side of the regulating means A for holding the cover member 7 open is formed.
[0023]
The operating member 8 has a substantially rectangular shape, and has a lower surface provided with an engaging rib which presses the operating portion 7b of the cover member 7 at the time of downward movement and engages with the engaging concave portion 19 at the lower limit. 20 are integrally formed. 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, projections 22 that engage with guide rails 21 formed on the inner surface of the plug 4 to smoothly move the operation member 8 up and down are integrally formed. Reference numeral 8a denotes a stopper that restricts rotation of the operation portion 7b when the cover member 7 is in the closed state.
[0024]
On the inner peripheral surface of the plug main 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.
[0025]
In the drawings, reference numeral 24 denotes a lid that is the upper surface of the plug 4.
[0026]
The stopper device for a liquid container configured as described above operates as follows.
[0027]
As shown in FIG. 2, when the cover member 7 closes the liquid injection passage outlet 5b, the cam piece 18 and the upper end of the valve body valve rod 6b are not in contact with each other, The valve 6 is closed by the urging force of the spring 13.
[0028]
As shown in FIG. 3 from the state of FIG. 2, when the operation member 8 is pressed down by a finger, the operation portion 7 b of the cover member 7 is rotated in the direction of the arrow M by the pressing force of the engagement rib 20 of the operation member 8, The cover portion 7a of the cover member 7 opens the liquid injection passage outlet 5b, and the rotational displacement of the cam piece 18 pushes down the valve body valve rod portion 6b against the urging force of the spring 13 to open the valve body 6. The valve state is set. At this time, the engaging rib 20 of the operating member 8 is engaged with the engaging concave portion 19 of the cover member 7, and the open state of the cover member 7 is held by the engaging force.
[0029]
In this state, the urging force of the spring 13 acting on the valve element 6 opened by the pressing force of the cam piece 18 does not exert a moment on the cam piece 18. Therefore, it is not necessary to provide a restricting means for maintaining the open state of the cover member 7 and the valve element 6. However, in this embodiment, in order to more reliably maintain the open state of the cover member 7 and the valve element 6. For this purpose, 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.
[0030]
Further, after the valve element 6 is moved down by the first cam surface 18a due to 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. 6 can be easily opened.
[0031]
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.
[0032]
Further, in the present embodiment, since the support shaft 16 is located 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 body 6, the plug 4 is Even if the size is reduced, the liquid injection passage outlet 5b and the operation member 8 can be made to have an appropriate size.
[0033]
The Second Embodiment FIG. 6 to FIG. 8, the plug system for a liquid container according to the second embodiment of the present invention is shown.
[0034]
In this case, the cover member 7 and the operation member 8 are detachably screwed to and from the valve support cylinder 4b of the plug 4 and have a substantially cylindrical support member 25 forming a part of the wall surface of the liquid injection passage 5. It is assembled. The support member 25 has a bottomed cylindrical support portion 25a to which the cover member 7 and the operation member 8 are assembled, and 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 as to face the upper part of the valve stem 6b of the valve body 6. Reference numeral 27 denotes a seal packing for sealing between the valve body valve stem portion 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 feeling of cleanliness 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.
[0035]
Third Embodiment FIG. 9 shows a stopper device for a liquid container according to a third embodiment of the present invention.
[0036]
In this case, a seal member 28 for sealing the liquid injection passage outlet 5b when the cover member 7 is closed is attached to the cover portion 7a of the cover member 7 in the second embodiment. The seal member 28 has an inverted conical shape, and is pressed against the 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 injection passage outlet 5b with the seal member 28, the valve rod 6b of the valve body 6 is attached to the first cam surface 18a of the cam piece 18 in the closed state of the cover member 7. Are pressed 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 embodiment, and thus the description is omitted.
【The invention's effect】
[0037]
According to the first aspect of the present invention, there is provided a plug body which is detachably attached to the container main body and has a liquid injection passage formed therein, which has an inlet communicating with the inside of the container main body and an outlet opening to the outside air. The plug body is provided with a valve body that opens and closes the inlet of the liquid injection passage by a vertical movement and is normally urged in a closing direction, and a cover member that opens and closes the outlet of the liquid injection passage by an arc rotation operation. In the liquid container stopper device, an operating member for opening and closing the cover member by an up-down movement is additionally provided, and between the operating member and the cover member, a regulating means for holding the open state of the cover member is provided. On the other hand, 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 set on an operation line when the valve body moves up and down. In front of A contact surface of the cam piece with the valve body is constituted by a first cam surface for moving the valve body down to a maximum lowering position and a second cam surface extending upward from a lower end of the first cam surface. 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 ≦ 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, since the regulating means for maintaining the open state of the cover member is provided between the operating member that opens and closes the cover member by the vertical movement and the cover member, the open state of the cover member can be more reliably maintained. There is also the effect of becoming. Furthermore, even if the cover member is operated excessively, the valve element opened by the cam piece is kept open or only moves in the opening direction, so that the valve element can secure an open area. There is also an effect. Further, even if the plug is made compact, there is an effect that a proper liquid injection passage outlet and a proper operation unit can be secured.
[0038]
As in the invention according to claim 2 , in the stopper device for a liquid container according to claim 1 , the regulating means is formed integrally 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 restricted by the engagement force between the valve element and the cam piece, the holding of the open state can be stabilized.
[0039]
As in the invention according to claim 3 , in the stopper device for a liquid container according to any one of claims 1 and 2 , when a guide rail that guides the operation member when the operation member moves up and down is formed on the stopper, the operation is performed. Up and down operation of members can be performed smoothly.
[Brief description of the drawings]
[0040]
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 stopper device for the liquid container according to the first embodiment of the present invention.
FIG. 3 is a longitudinal sectional view showing a valve-open state of the liquid container stopper device 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 a relationship between a cam piece and a 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 closed 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 opening state of a stopper device for a liquid container according to a second embodiment of the present invention.
FIG. 8 is a longitudinal sectional view showing an exploded state of a stopper device for a liquid container according to a second embodiment of the present invention.
FIG. 9 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.
[Explanation of symbols]
[0041]
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, 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, 19 is an engagement recess, 20 is an engagement rib, 21 is a guide rail, 22 is a projection, 24 is a support member, and A Is the regulating means, and P is the maximum downward movement point.

Claims (3)

A plug body which is detachably attached to the container body and has a liquid injection passage formed therein, the liquid injection path having an inlet communicating with the inside of the container main body and an outlet opening to the outside air; A liquid container stopper device comprising: a valve body that opens and closes an inlet of a liquid container by a vertical movement and is urged in a normally closed direction; and a cover member that opens and closes an outlet of the liquid injection passage by an arc rotation operation. An operating member for opening and closing the cover member by a vertical movement; and a regulating means for holding the open state of the cover member between the operating member and the cover member. A cam piece for opening the valve body when the cover member is opened is formed integrally and the center of rotation of the cam piece is positioned on an operation line when the valve body moves up and down, The cam piece A first cam surface for moving the valve body down to a maximum lowering position, and a second cam surface extending upward from a lower end of the first cam surface; Assuming that the distance between the maximum lowering point on the 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 ₂ . A stopper device for a liquid container, comprising: The regulating means is constituted by an engagement recess formed in an operation portion of the cover member, and an engagement rib formed integrally with the operation member and engaging with the engagement recess when the operation member is moved down. plug device of the liquid container of claim 1, wherein a. Wherein the plug member, the operating member the claims 1 and plug device of the liquid container according to any one claim of 2, characterized in that the formation of the guide rail for guiding at vertically moved.

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