JP3665466B2 - Liquid container stopper mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stopper mounting structure for liquid containers such as water bottles and thermos bottles.
[0002]
[Prior art]
Conventionally, as a stopper mounting structure for a liquid container, there is a structure in which a stopper is attached to a container body by screwing a male and female screw provided at the mouth of the container body. With such an attachment structure in which the male and female screws are simply screwed together, it is difficult to confirm whether or not the stopper has been rotated to the required closing position when the stopper once removed is attached to the mouth of the container body.
On the other hand, a stopper mounting structure as shown in FIGS. 13 to 15 is conventionally known.
In this mounting structure, the female thread 2 is provided on the inner periphery of the mouth portion 1a of the container body 1 as shown in FIGS. 13 and 14, while the lower end mouth of the stopper 3 is shown in FIGS. The male screw 4 is provided in the fitting part 3a with respect to the part 1a. A locking rib 5 is provided at a required position of the male screw 4 of the plug 3.
[0004]
When the fitting part 3a of the stopper 3 is inserted into the mouth part 1a and rotated around the axis of the container main body 1 and the stopper 3, the male screw 4 on the stopper 3 side is accompanied by the female screw 2 on the container main body 1 side. Screwed together. When the stopper 3 is tightened to the required closing position, the upper start end 2a of the female screw 2 on the container body 1 side comes into contact with the locking rib 5 on the stopper 3 side. It can be confirmed that 3 is rotated to the required closing position.
In order to seal the stopper 3 and the container lid 1 at a determined closing position, high accuracy in the axial direction is required, and it is almost impossible in terms of productivity. Conversely, the stopper 3 and the mouth 1a 13 and 15, the lower end portion of the plug 3 has an annular packing 6 for absorbing the axial dimension allowance, as shown in FIGS. Is installed. At the closing position, the packing 6 is pressed against the step portion 1 b in the container body 1, so that an axial dimensional error between the stopper 3 and the container body 1 is absorbed. Therefore, it is indispensable to provide the packing 6 capable of absorbing the dimension in the axial direction in a plug mounting structure that requires a determined closing position.
[0005]
[Problems to be solved by the invention]
Even in the plug mounting structure shown in FIG. 13 to FIG. 15, since the feeling when the locking rib 5 and the upper start end 2 a of the female screw 2 come into contact with each other is not so clear, the user may not notice it. is there. In this case, although the stopper 3 has already been sufficiently tightened, there is a problem that the user tries to tighten the stopper 3 and rotates the stopper 3 with a large force.
[0006]
The present invention has been made in order to solve the problems in the conventional stopper mounting structure of a liquid container, and is capable of reliably confirming that the stopper is tightened to a required position with respect to the container body. It is an issue.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a plug mounting structure for a liquid container that is mounted on a mouth of a container body by rotating the plug around an axis, and the plug is detachable from an upper plug member and a lower plug member. In combination, the upper stopper member interferes with the mouth of the container body at the protruding position before the upper stopper member and the lower stopper member are combined to prevent the stopper from fitting into the mouth. A stopper that enables the stopper to be fitted to the mouth in the retracted position after the combination of the upper stopper member and the lower stopper member, and when the stopper is attached by rotating the stopper to the closing position with respect to the mouth. comprising a packing having a cavity provided in the lower portion of the plug in intimate contact with the container body, the click mechanism to cause click feeling by pulling and protrudes operate the stopper and the container body, the click mechanism, the Connect the stopper to the closing position When rotating, a stopper in the retracted position, and characterized in that to produce a click feeling by pulling and protrudes operation engages a cam portion provided on the opening portion side.
[0008]
By providing such a click mechanism, a user who is trying to attach a stopper to the mouth of the container body can reliably confirm that the stopper has been rotated to the closing position, and the user can An attempt to rotate the stopper can be prevented. Even if the stopper is stopped at the closing position, the seal provided on the stopper can absorb the dimensional error in the vertical direction, so that the seal with the container body can be securely held. Moreover, since only one stopper member is used for the click mechanism for preventing the stopper from being attached to the mouth of the container body, it is possible to obtain a click feeling at the closing position without increasing the number of parts. it can.
[0009]
The locking piece provided at either the mouth or the stopper of the container body locks the start end of the locking piece provided at the other when the stopper is attached to the closing position with respect to the mouth. A locking rib may be provided.
[0010]
In this case, since the rotation of the plug is locked by the locking rib and the locking piece at the closing position, it is possible to more reliably prevent the user from further rotating the plug from the closing position. .
[0011]
As a means for attaching the stopper to the container body, there is a means in which a male and female screw is provided in each of the mouth portion and the stopper of the container body, and the stopper is attached to the container body by screwing these female and male screws. In addition, the bayonet provided in the opening | mouth part of the container main body and the stopper, or a horizontal locking piece may be provided in both members, and these may be piled up in an axial direction and a stopper may be attached to the container main body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention shown in the drawings will be described.
( Reference example )
Plug mounting structure of the liquid container according to a reference example to illustrate the implementation of the invention shown in FIGS. 1 to 4 is by screwing the plug 12 to the mouth portion 11a of the container main body 11 is rotated about the axis Attached.
As shown in FIGS. 1 and 2, a female screw 14 is provided on the inner periphery of the mouth portion 11 a of the container body 11.
As shown in FIGS. 1 and 3, the stopper 12 is provided with a male screw 15 in the fitting portion 12 a with respect to the mouth portion 11 a of the container body 11. Further, a locking rib 17 is provided at a required position of the male screw 15 of the stopper 12 so that when the stopper 12 is tightened to a required closing position, the upper start end portion 14a of the female screw 14 on the container body 11 side contacts. Yes. Even if the locking rib 17 is omitted, the object of the present application can be achieved.
[0013]
As shown in FIGS. 1 and 4, a cylindrical guide tube 19 having a side opening is integrated with a wall portion 18 provided inside the plug 12 so that the longitudinal direction thereof is horizontal in FIG. 1. Is formed. A short rod-like engagement member 21 is slidably accommodated in the guide tube 19. An insertion hole 12b is provided in the side wall of the stopper 12, and the end 21a of the engagement member 21 protrudes from the insertion hole 12b. A collar portion 21 b is provided at the longitudinal center of the engaging member 21. The engaging member 21 is externally provided with a spring 23 constituting elastic means in the present invention, and this spring 23 is held in a compressed state between the collar portion 21 b and the wall portion 18.
[0014]
The fitting portion 12a of the plug 12 is provided with an annular packing 25 having a cross-sectional shape with a hollow 25a on the inner surface and a curved side surface 25b, and the plug 12 is rotated to a closed position as will be described later. Then, the packing 25 is elastically pressed against the step portion 26 in the container body 11. In addition, this packing shape can absorb the dimension in the vertical direction, and even if the pressure inside the container rises, it acts to push the side surface 25b outward from the void 25a side, and therefore has excellent sealing properties. The stopper 12 includes a valve body 29 that can be operated by a button 27 and a switch 28.
[0015]
On the other hand, an engagement recess 30 constituting the cam portion in the present invention is provided on the inner periphery of the mouth portion 11a.
In FIG. 1, 32 is a lid, and 33 is a cup. These are attached to the container body 11 after the stopper 12 is attached to the container body 11.
[0016]
When the stopper 12 is attached to the mouth portion 11a of the container body 11, the lower end of the fitting portion 12a of the stopper 12 is inserted into the mouth portion 11a, and the stopper 12 is flattened around the axis L1 as indicated by an arrow A1 in FIG. Rotate clockwise by sight.
When the plug 12 is rotated, the male screw 15 of the plug 12 and the female screw 14 of the mouth portion 11a are screwed together, and the plug 12 is lowered downward in FIG. At this time, the end portion 21 a of the engaging member 21 is in contact with the inner periphery of the mouth portion 11 a and moves in the radially inward retracting direction against the urging force of the spring 23.
[0017]
When the stopper 12 is rotated to the closing position, as shown in FIG. 4, the engaging member 21 faces the engaging recess 30, and the engaging member 21 moves in the radially outward projecting direction by the urging force of the spring 23. Then, the end 21 a is fitted into the engagement recess 30. As described above, when the end 21 a of the engaging member 21 is fitted into the engaging recess 30, a click feeling is generated. At this time, the tip of the engagement member 21 collides with the bottom of the engagement recess 30 to make a sound. Therefore, the user who is rotating the stopper 12 can surely confirm that the stopper 12 has been rotated to the closing position. Further, when the stopper 12 is slightly rotated after reaching the closing position, the upper start end portion 14a of the female screw 14 on the container body 11 side comes into contact with the locking rib 17 on the stopper 12 side. Even if the stopper 12 is rotated, the stopper 12 does not rotate. It should be noted that there is no problem even if this contact position is set as the closing position.
In the closing position, the packing 25 on the side of the stopper 12 is pressed against the step 26 in the container body 11, but the side surface 25b is curved with elasticity in the direction of the space 25a. A dimension error in the axial direction with respect to is absorbed.
[0018]
When removing the stopper 12 at the closing position from the mouth 11a of the container body 11, the stopper 12 is rotated counterclockwise in plan view as indicated by an arrow A2. At this time, the engaging member 21 moves inward in the radial direction against the urging force of the spring 23, and the tip comes out of the engaging recess 30 and comes into contact with the inner periphery of the mouth portion 11a. However, when the force for rotating the stopper 12 counterclockwise is small, the stopper 12 does not rotate because the tip of the engaging member 21 is held in the engaging recess 30. Therefore, in this reference example, it is possible to prevent loosening of the plug 12 rotated to the closing position.
[0019]
(Implementation form)
Figure in the implementation of the invention shown in FIG. 9 from 5, as shown in FIG. 6, the lower end portion 14b of the female thread 14 provided on the mouth portion 11a of the container main body 11 constitute a cam portion in the present invention Yes.
[0020]
As shown in FIGS. 5, 7, and 8, the stopper 12 in the present embodiment is formed by detachably combining first and second stopper members 36 and 37 with a lock ring 39.
A male screw 15 is provided on the side of the first plug member 36.
The first plug member 36 is provided with a stopper 41 that is urged radially outward by a spring 40. As shown in FIG. 9, the stopper 41 is an oblong frame-like body, and includes an end portion 41 a on the outer side of one end and an engaging portion 41 b with the valve body 29 on the inner side of the other end. A shaft portion 41c for mounting the spring 40 is provided inside one end. When the first stopper member 36 and the second stopper member 37 are not engaged with each other, the stopper 41 protrudes from the peripheral wall of the first stopper member 36 as shown by a two-dot chain line in FIG. It is in. Even if the first plug member 36 is to be attached to the mouth portion 11a alone before being combined with the second plug member 37, the end portion 41a of the stopper 41 interferes with the upper end portion of the mouth portion 11a, and therefore fits into the mouth portion 11a. Can not do it. On the other hand, when the first plug member 36 and the second plug member 37 are combined, the upper portion of the valve body 29 interferes with the engaging portion 41b and moves inward in the radial direction, and the retracted position indicated by the solid line in FIG. Become. In this retracted position, the tip of the end portion 41 a of the stopper 41 partially protrudes from the outer periphery of the first plug member 36. The protrusion margin of the end portion 41a of the stopper 41 is a dimension that can be retracted when the female screw 14 of the container main body 11 is fitted, and a corner R corresponding to the amount of protrusion is provided around the end portion 41a. ing.
The second plug member 37 is provided with a packing 25 having a substantially U-shaped cross section similar to the reference example , and a valve body 29 that is always urged in a direction to close the spout 37b of the second plug member main body 37a. It has been. In addition, 37c is a spring, 37d is a spring retainer, and 37e is a valve packing.
[0021]
When the stopper 12 is combined with the first and second stopper members 36 and 37 and the stopper 12 is in the retracted position, the stopper 12 is fitted into the mouth portion 11a and rotated in the clockwise direction indicated by the arrow A1, the male screw 15 and the female screw 14 is screwed, and accordingly, the plug 12 is lowered downward in FIG. At this time, the stopper 41 is in the retracted position, but the portion that partially protrudes as described above comes into contact with the tip of the female screw 14 of the mouth portion 11a as shown by the one-dot chain line in FIG. It is pushed in.
[0022]
When the stopper 12 is rotated to the closing position, the engagement between the end portion 41a of the stopper 41 and the lower end portion 14b of the female screw 14 is released as shown by the solid line, and the stopper 41 is instantaneously moved by the urging force of the spring 40. As described above, it moves radially outward so as to partially protrude. A click feeling and a sound are generated by the protruding operation of the stopper 41, and the user can surely confirm that the stopper 12 is in the closing position. In addition, if the convex part 35 is formed in the female screw lower end part 14b as shown in FIG. 10, the end part 41a of the stopper 41 is pushed further inward in the radial direction before the closing position, so that a click feeling and generation are generated. The sound effect can be further enhanced. Further, with the stopper 41 retracted, the end 41a is retracted to the same or slightly inward in the radial direction as the outer periphery of the first plug member 36, and the click feeling and sound of the plug are generated only by the convex portion 35. It may be generated.
[0023]
When a counterclockwise rotational force indicated by an arrow A2 is applied to the stopper 12 at the closing position, the stopper 41 moves inward in the radial direction against the urging force of the spring 40. Although the plug can be opened, the end 41a of the stopper 41 is locked to the lower end 14b of the female screw 14 even if a small rotational force in the direction of opening is generated in the plug 12 due to vibration or the like. Therefore, in this embodiment, it is possible to prevent loosening of the plug 12 rotated to the closing position.
[0024]
As described above, in the present embodiment, the stopper 41 for preventing only the first plug member 36 from being attached to the mouth portion 11a as described above is used, and the click mechanism for confirming the plugging position is engaged. The increase in the number of parts and the increase in cost can be prevented in that they are also used as members.
[0025]
The present invention is not limited to the above-described embodiment, and various modifications are possible. The engaging member and the elastic member may be provided integrally. FIG. 11 shows an example in which the engaging member 21 is a resin mold and a wavy elastic member is provided. Moreover, contrary to the above you facilities embodiment, while the mouth portion of the container body provided with the engaging member and the elastic member may be provided with a cam portion on the plug.
In the click mechanism shown in FIG. 12, a notch 45 is provided on the inner periphery of the mouth portion 11a of the liquid container, and a cantilever-like elastic piece 46 provided with a projection 46a is projected into the notch 45, while the stopper A recess 47 that constitutes the cam portion of the present invention may be provided on the outer periphery of the twelve, and a click feeling may be generated by fitting the projection 46 a of the elastic piece 46 into the recess 47 at the closing position.
In addition, although the screwing has been described as means for rotating and attaching, bayonet fitting or a plurality of horizontal locking pieces on one member are provided, and the other member is provided at a position lowered by the thickness of the locking piece. A structure may be employed in which horizontal locking pieces are provided and rotated to overlap in the axial direction.
[0026]
【The invention's effect】
As is apparent from the above description, in the stopper mounting structure for a liquid container according to the present invention, a click mechanism that causes a click feeling by pulling in and protruding when the stopper is rotated to the closing position with respect to the mouth portion. Therefore, a user who is trying to attach a stopper to the mouth of the container body can reliably confirm that the stopper has been rotated to the closing position, and the user can rotate the stopper further from the closing position. It can be prevented from trying.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a stopper mounting structure for a liquid container according to a reference example of the present invention.
FIG. 2 is a partial cross-sectional side view showing a mouth portion of a container body.
FIG. 3 is a side view showing a stopper.
FIG. 4 is a partially enlarged sectional view showing a click mechanism.
5 is a longitudinal sectional view showing a stopper mounting structure for a liquid container according to implementation embodiments of the present invention.
FIG. 6 is a plan view showing a mouth portion of the container body.
FIG. 7 is a cross-sectional view showing a stopper.
FIG. 8 is an exploded perspective view showing a stopper.
FIG. 9 is a perspective view showing a stopper.
FIG. 10 is a partial cross-sectional view showing another example of the click mechanism.
FIG. 11 is a partial cross-sectional view showing another example of the click mechanism.
FIG. 12 is a partial cross-sectional view showing another example of the click mechanism.
FIG. 13 is a longitudinal sectional view showing a conventional stopper mounting structure for a liquid container.
FIG. 14 is a partial cross-sectional side view showing the mouth of the container body.
FIG. 15 is a side view showing a stopper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Container body 12 Plug 14 Female screw 15 Male screw 21 Engaging member 23 Spring (elastic means)
30 Engaging concave portion 35 Convex portion 36 First plug member 37 Second plug member 41 Stopper (engaging member)

Claims (3)

A stopper mounting structure for a liquid container, which is attached to the mouth of the container body by rotating the stopper around the axis,
The above plug is a combination of an upper plug member and a lower plug member that are detachable,
The upper stopper member interferes with the mouth portion of the container body at the protruding position before the combination of the upper stopper member and the lower stopper member to prevent fitting of the stopper to the mouth portion, and the upper stopper member And a stopper that enables fitting of the stopper to the mouth portion in the retracted position after the combination of the lower stopper member,
A packing having a space provided in a lower portion of the stopper that is in close contact with the container body when the stopper is attached to the mouth by rotating to a closing position ;
Comprising a click mechanism to cause click feeling by pulling and protrudes operate the stopper and the container body,
When the stopper is rotated to the closing position, the stopper in the retracted position engages with a cam portion provided on the mouth side and pulls and protrudes to cause the click feeling. A stopper mounting structure for a liquid container, which is characterized by being generated .   When the attachment piece provided on either the mouth or the stopper of the container body attaches the stopper to the closure position with respect to the mouth, the engagement piece locks the starting end of the attachment piece provided on the other side. 2. The stopper mounting structure for a liquid container according to claim 1, further comprising a rib.   3. The liquid container stopper according to claim 1 or 2, wherein male and female screws are respectively provided in the mouth portion and the stopper of the container body, and the stopper is attached to the container body by screwing these male and female screws. Mounting structure.

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