JP2002209764A - Plug body for container of drink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the degree of freedom in selecting a spring for opening a cap member by relieving impact forces when the cap member is opened. SOLUTION: A cylindrical shoulder member 4 to be releasably attached to the mouth of a container body 2 and a cap member 7 to close an opening of the member 4 are connected by a hinge pivot 6 to be inserted into a hinge pivot supporting part 43 of the member 4 and a hinge bearing part 73 of the member 7, while a torsion spring 9 is provided for the hinge pivot 6 to urge the member 7 to the opening direction thereof. A projection 52 is provided on the supporting part 43 so that the member 7 is brought into sliding contact with the projection 52 when the member 7 is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper for a beverage container of a type in which a lid is opened with a single touch to directly drink a beverage in the container body.

[0002]

2. Description of the Related Art For example, a plug disclosed in Japanese Patent Application Laid-Open No. 9-299253 discloses a cylindrical shoulder member detachably attached to an opening of a container body, and a lid for opening and closing an opening of the shoulder member. A member, a hinge shaft inserted into a hinge shaft support portion of the shoulder member and a hinge receiving portion of the lid member, a spring provided on the hinge shaft to bias the lid member in an opening direction, and the hinge A lock member provided at a position radially opposed to the shaft to hold the lid member in a closed state. When the lid member is unlocked, the lid member is opened by the urging force of a spring and the inside of the container main body is opened. You can drink the beverage directly.

[0003]

However, in the above-described structure, when the lid is unlocked by holding the container body, if the biasing force of the spring is strong, the lid opens vigorously and collides with the shoulder member. And you may feel an unpleasant impact on your hands or an unpleasant impact sound. Further, if such a collision is repeatedly performed, a collision load is applied to the hinge shaft support portion of the shoulder member, and there is a possibility that the hinge shaft support portion may be damaged due to long-term use. Furthermore, when the amount of beverage in the container body is reduced, the container body becomes lighter, and the container body may shake and fall due to an impact force. For this reason, when selecting a spring, it is necessary to consider the weight of the lid, the weight and height of the container body, and especially the impact force when the body is empty. I have to choose
There is a problem that the width of selecting a spring is reduced. Conversely, if the biasing force of the spring is weak, there is a problem that the lid member does not open sufficiently or the lid member falls down due to its own weight that is inclined when drinking.

Accordingly, an object of the present invention is to provide a stopper for a beverage container in which the impact force at the time of opening the lid member is reduced and the degree of freedom in selecting a spring for opening the lid member is improved.

[0005]

In order to achieve the above object, the present invention provides a cylindrical shoulder member detachably attached to a mouth of a container body, and a lid member for opening and closing an opening of the shoulder member. A hinge shaft inserted into the hinge shaft support portion of the shoulder member and the hinge bearing portion of the lid member, and a spring provided on the hinge shaft to bias the lid member in the opening direction,
At least one of the hinge shaft supporting portion and the hinge bearing portion, wherein the stopper body of the beverage container includes a lock member provided at a position radially opposed to the hinge shaft and holding the lid member in a closed state. In addition, a projection is provided in which the lid member or the shoulder member slides when the lid member is opened. Further, the protrusion is formed so that a radial dimension gradually increases in an opening direction of the cover member, and a sliding contact between the protrusion and the cover member or the shoulder member is a line contact. It is preferable that the sliding contact area between the protrusion and the lid member or the shoulder member increases with the opening operation of the lid member.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment in which the present invention is applied to a plug of a beverage container having a heat insulating structure will be described in more detail with reference to the drawings. FIGS. 1 to 4 show a first embodiment of the present invention. A beverage container 1 having a size that can be held by one hand includes a container body 2 having a metal double heat insulation structure, and a mouth portion of the container body 2. And a plug 3 made of synthetic resin which is detachably mounted on the plug. The container body 2 is formed by integrally joining the upper ends of a metal inner container 21 and an outer container 22 each having an open top, and has a heat insulating portion 23 having a vacuum heat insulating structure between the containers 21 and 22. Also, on the outer periphery of the mouth of the container body 2,
A screw portion 24 for screwing the plug 3 is formed.

The stopper 3 has a cylindrical shoulder member 4 removably attached to the mouth of the container body 2 and is connected to the shoulder member 4 via a hinge shaft 6 so as to open the upper opening of the shoulder member 4. And a lid member 7 that opens and closes.

The shoulder member 4 includes a mounting portion 41 that is screwed into the screw portion 24 of the container body 2 and a plug receiving portion 42 that is assembled to the mounting portion 41 and inserted into the inner periphery of the mouth of the container body 2. It is configured. The mounting portion 41 has a hinge shaft support portion 43 on one side.
The hinge shaft supporting portion 43 supports the central portion of the hinge shaft 6. Further, a lock member 8 for holding the lid member 7 in a closed state is provided at a position radially opposed to the hinge shaft support portion 43. The plug receiving portion 42 is formed in a cylindrical shape with a bottom, and the upper opening peripheral wall on the lock member 8 side is raised by one step to form the drinking spout 44, and the hinge shaft support 43 side is increased and the drinking opening 44 side is lowered. A liquid passage 46 is formed on the bottom wall 45 on the side of the drinking opening 44 and an air hole 47 is formed on the hinge shaft support 43 side, and a liquid flow path 48 is formed between the bottom wall 45 and the upper opening. A packing 49 is provided on the outer periphery of the lower part so as to be in close contact with the inner peripheral wall of the mouth of the container body 2.

As shown in the sectional view of FIG. 1, the hinge shaft support portion 43 has a substantially columnar cross-section formed continuously and integrally with the upper portion of the mounting portion 41, and has a horizontal hinge shaft insertion hole at the center thereof. 51. The hinge shaft support portion 43 has a radial dimension from the hinge shaft insertion hole 51 to the outer periphery, the front half and the rear half where the lid member 7 rotates in the opening direction, the rear half having a large diameter, A projection 52 is formed on the surface. That is, the radius R2 from the hinge shaft insertion hole 51 of the rear half to the outer periphery is made larger than the radius R1 from the hinge shaft insertion hole 51 of the front half to the outer periphery, and the start end side of the projection 52 is hung on the rear side. The radius is gradually increased.
In addition, the protrusion 52 has a triangular shape with a sharpened front end.

A torsion spring 9 for urging the lid member in the opening direction is wound around the hinge shaft 6 on both sides of the hinge shaft support 43.

The lid member 7 has a lid portion 71 for covering the upper opening of the plug receiving portion 41 and an inner plug 72 provided on the lid portion 71 and inserted into the liquid flow path 48. The lid 71 has hinge bearings 73, 73 for supporting both ends of the hinge shaft 6 on one side, and an insertion recess 74 for the hinge shaft support 43 in the middle of the hinge bearings 73, 73. are doing. The depth of the inner end portion 75 is set such that the insertion concave portion 74 makes line contact with the protrusion 52 of the hinge shaft support portion 43 when the lid member 7 is opened. Also, the lid 7
1 has a locking portion 76 that is locked to the lock member 8 at a position radially opposed to the insertion concave portion 74. The inner plug 72 is provided with a seal member 77 for closing the liquid passage hole 46 and the air hole 47 when closed.

The lock member 8 is rotatably supported by a horizontal support shaft 81 provided on the mounting portion 41. A lock portion 82 is provided above the support shaft 81, and a pushing portion 83 is provided below the support shaft 81. The locking portion 82 is normally urged in the closing direction by a spring 84 wound around the support shaft 81.

In the plug 3 configured as described above, when the pushing portion 83 of the lock member 8 is pushed, the locking portion 82 opens outward, and the locking portion 82 and the locking portion 76 of the lid member 7 are connected. The engagement is released, and the lid member 7 rotates upward about the hinge shaft 6 by the biasing force of the torsion spring 9 and opens. At this time, at the stage where the lid member 7 is opened and pivots backward from the upright state, the inner end portion 75 of the insertion concave portion 74 of the lid member 7 comes into line contact with the projection 52 of the hinge shaft support portion 43 and comes into sliding contact therewith. . Since the protruding portion 52 has a triangular shape with a sharpened front end, the contact area with the inner end portion 75 increases with the opening operation of the lid member 7. As a result, the speed of the lid member 7 in the opening direction is reduced, and the rotation of the lid member 7 stops before colliding with the shoulder member 4.

Therefore, the impact force at the time of opening the cover member 7 is reduced, and an unpleasant impact is not transmitted to the hand holding the container body 2. In addition, since it is not necessary to consider the strength of the biasing force of the torsion spring 9, the degree of freedom in selecting the torsion spring 9 is improved, and the manufacturing cost can be reduced. Further, if the biasing force of the torsion spring 9 is too weak to open the lid member sufficiently, or if the lid member is tilted when drinking, there is no problem that the lid member 7 falls down due to its own weight or the power of tilting.

FIG. 5 shows a second embodiment of the present invention. The radius of the protrusion 52 of the hinge shaft support 43 from the hinge shaft insertion hole 51 to the outer periphery is larger than the radius R2 of the start end. The rear end side is formed so that the radius dimension R3 gradually increases. As a result, during the opening operation of the lid member 7, as the rotation of the lid member 7 increases, the inner end 7
5 comes into strong line contact with the projection 52 of the hinge shaft support 43 and slides on it, and before the collision with the shoulder member 4, the rotation of the lid member 7 stops.

Therefore, the rotation stop position of the lid member 7 can be set by considering a change in the size of the projection 52 from the radius R2 at the start end to the radius R3 at the rear end. Further, even if the depth of the inner end portion 75 of the lid member 7 fluctuates due to an assembling error, it can be handled.

FIGS. 6 and 7 show a third embodiment of the present invention. As in the first embodiment, the present embodiment has a triangular shape with a sharpened front end. The projection 78 whose diameter from the hinge shaft insertion hole 51 to the outer periphery is gradually increased toward the rear half of the hinge bearing portion 7 of the lid member 7.
3, 73, so that each projection 78 is in line contact with the upper edge of the shoulder member 4 when the lid member 7 is opened, and is in sliding contact with the upper edge. It has a function and effect.

[0018]

As described above, the stopper of the beverage container according to the present invention comprises a cylindrical shoulder member detachably attached to the mouth of the container body and a lid member for opening and closing the opening of the shoulder member. And a hinge shaft inserted into the hinge shaft supporting portion of the shoulder member and the hinge bearing portion of the lid member, and a spring is provided on the hinge shaft to urge the lid member in the opening direction. Since at least one of the bearings is provided with a projection to which the lid member or the shoulder member slides when the lid member is opened,
When the lid member is rotated upward about the hinge axis by the biasing force of the spring and opened, the lid member or the shoulder member slides on the protrusion, and the speed in the opening direction of the lid member is reduced, so that the shoulder member Since the rotation of the lid member is stopped before colliding with the container, the impact force at the time of opening the lid member is reduced, and an unpleasant impact is not transmitted to the hand holding the container body. In addition, since the biasing force of the spring that opens the lid member only needs to have a force that opens the lid member, the degree of freedom in selecting the spring is improved, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where a lid member is opened and is in sliding contact with a protrusion of the first embodiment.

FIG. 2 is an upper rear perspective view of the beverage container showing the protrusion of the first embodiment.

FIG. 3 is a top sectional view of a beverage container.

FIG. 4 is a top front perspective view of the beverage container with the lid member open.

FIG. 5 is a cross-sectional view showing a state in which a lid member is opened and is in sliding contact with a protrusion of the second embodiment.

FIG. 6 is an upper side view of a beverage container showing a protrusion of the third embodiment.

FIG. 7 is an upper rear perspective view of the same beverage container.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Beverage container, 2 ... Container main body, 3 ... Plug body, 4 ... Shoulder member, 6 ... Hinge shaft, 7 ... Lid member, 8 ... Lock member, 9 ...
43 torsion spring, 43: hinge shaft support of shoulder member, 52: projection of hinge shaft support, 73: hinge bearing of lid member, 78: projection of hinge bearing

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kunio Hatsumoto 1-16-7 Nishishinbashi, Minato-ku, Tokyo F-term in Nippon Oxide Co., Ltd. (reference) 3E084 AA02 AB01 BA02 CA01 DA01 DB14 FA08 FD02 GA06 GB06 HA03 HB03 HD04 KA16 KB01 LD01 4B002 AA02 BA15 CA32 CA50

Claims (4)

[Claims] 1. A cylindrical shoulder member detachably attached to an opening of a container body, a lid member for opening and closing an opening of the shoulder member, a hinge shaft support part of the shoulder member, and a hinge of the lid member. A hinge shaft inserted into the bearing portion, a spring provided on the hinge shaft to bias the lid member in an opening direction, and a lid provided at a position radially opposed to the hinge shaft to close the lid member. In the closure of the beverage container provided with a lock member to hold the state, at least one of the hinge shaft support portion or the hinge bearing portion, at the time of opening the lid member,
A stopper for a beverage container, comprising a projection to which the lid member or the shoulder member slides. 2. The closure for a beverage container according to claim 1, wherein the projection is formed such that a radial dimension gradually increases in an opening direction of the lid member. 3. The beverage container stopper according to claim 1, wherein the sliding contact between the projection and the lid member or the shoulder member is a line contact. 4. The beverage according to claim 1, wherein a sliding contact area between the protrusion and the lid member or the shoulder member increases with the opening operation of the lid member. The closure of the container.