JPH0439159Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a one-touch type cap mounting structure.

[Conventional technology]

The conventional cap mounting structure, which attaches the cap to the mouth of the container in a one-touch manner, was developed in the 1970s.
-Publication No. 15485 (Figures 2 and 3), Publication No. 15485-
The ones shown in Publication No. 26062 (FIG. 4) and Japanese Utility Model Publication No. 52-26063 (FIG. 5) are known.

These have two or more engaging protrusions 6 protruding from the inner surface of the cap 5, and the opening part 2 is formed into a polygonal column shape with twice the number of engaging protrusions 6, and two adjacent protrusions in this polygonal column are formed. One set of outer wall surfaces is used, and one of the outer wall surfaces is used as the entrance/exit surface 11 through which the engaging protrusion 6 goes in and out when the cap 5 is attached to the mouth tube part 2, and the lower part of the adjacent other outer wall surface 12 is used as the entrance/exit surface 11 of the cap 5. The engagement protrusion 6 moves from the entrance/exit surface 11 side due to movement.
A locking groove 18 is formed to receive the locking groove 18, and the upper edge of the locking groove 18 is formed into a tapered surface 17 that descends as it goes deeper into the locking groove 18. When attaching the cap 5 to the mouth tube part 2, the locking protrusion 6 is lowered along the entrance/exit surface 11,
Thereafter, the cap 5 is rotated so that the engaging protrusion 6 enters the locking groove 18 and is locked, but this locking is done by the locking groove 18 and the corners of the polygonal mouth barrel 2. By holding the stop projection 6. Further, the container 1 and the cap 5 are positioned in this way. [Problems to be solved by the invention] In such a structure, when the cap 5 is rotated and the locking protrusion 6 is locked in the locking groove 18 by climbing over the corner of the mouth tube portion 2, the cap 5 is rotated. If the cap is rotated too much, the locking protrusion 6 will often go over the next corner of the mouth tube 2, and as this process is repeated, the fit of the cap 5 to the mouth tube 2 will become loose. There is a problem.

In addition, when removing the cap 5, return the locking protrusion 6 from the locking groove 18 to the entrance/exit surface 11 side,
It is necessary to lift the cap 5 out of that state.

The present invention was devised in view of these points, and the technical problem is to provide a cap mounting structure that is securely fitted to the mouth part and easy to remove.

[Means for solving problems]

In order to solve the above technical problem, the present invention takes the following technical measures.

The diameter of the mouth barrel part 2 of the container 1 is made smaller toward the upper end, and the outer circumferential surface of the mouth barrel part 2 is made into an inclined surface, and a plurality of inclined threads 3 are protrudingly provided on the outer peripheral surface of the mouth barrel part 2. Then, grooves 4 having a required length along the threads 3 are formed on the outer circumferential surface of the mouth tube portion 2 below each thread 3.

On the other hand, a cap 5 having a cylindrical body 9 to be fitted into the mouth tube portion 2 is provided. Projections 6 are provided on the inner surface of the cylindrical body 9 and have a length that fits into each of the grooves 4 and are inclined in accordance with the inclination of the thread 3 in a number corresponding to the number of grooves 4. Furthermore, vertical slits 10 are provided in the portions of the cylindrical body 9 between the respective protrusions 6 to provide a cap attachment structure.

[Effect]

When the cylindrical body 9 of the cap 5 is placed over the mouth part 2 and rotated, the protrusion 6 enters between the threads 3 around the mouth part 2. And this protrusion 6 is a screw thread 3
When the cap 5 is guided down by the
Since the outer peripheral surface of the slit 1 is an inclined surface, the slit 1
The cylindrical body 9 provided with 0 expands to have a larger diameter, and the protrusion 6 is fitted into the groove 4, thus completing the fitting of the cap 5 into the mouth barrel portion 2. When the protrusion 6 fits into the groove 4, the expanded cylinder 9 returns to its original diameter, so a sound is generated when the protrusion 6 fits into the groove 4, and the operation It gives the user a good feeling of fitting in the hand.

When removing the cap 5, rotate the cap 5 in the opposite direction to when it is fitted, and remove the protrusion 6 from the groove 4.
When the cap 5 is released, the protrusion 6 is pushed against the inclined surface because the outer circumferential surface of the cap 5 is an inclined surface and the cylinder 9 attempts to return from the expanded state. will rise to help remove cap 5.

〔Example〕

Hereinafter, an embodiment of the present invention will be described based on FIG.

A spout 2 is provided upright at the top of the container 1, and the diameter of the spout 2 becomes smaller toward the upper end, so that the outer circumferential surface of the spout 2 becomes an inclined surface. .

A plurality of inclined threads 3 are protruded from the outer circumferential surface of the mouth tube portion 2, and a required length is provided along the screw threads 3 on the outer circumferential surface of the mouth tube portion 2, which is the lower side of each screw thread 3. recessed grooves 4 are formed respectively. This groove 4 is diagonal along the thread 3, and the inner wall surface 4 at the uppermost end thereof
a is inclined.

On the other hand, a cap 5 for closing the mouth of the container 1 is provided, and this cap 5 has a cylindrical part 8 hanging down around the circular top plate 7 and is fitted into the mouth part 2 at the center of the lower surface of the top plate 7. The cylindrical body 9 is installed vertically.

The inner surface of the cylindrical body 9 has a length to fit into each of the grooves 4, and has protrusions 6 which are inclined in accordance with the inclination of the threads 3 and have protrusions corresponding to the number of grooves 4. It has been set up. Furthermore, a vertical slit 10 is provided in the portion between the respective protrusions 6 of the cylindrical body 9.
By providing the slits 10, the cylindrical body 9 becomes independent between the slits 10, has elasticity, and can expand in the radial direction of the cylindrical body 9.
The diameter of the cylindrical body 9 measured between each of the protrusions 6 is approximately the same as the outer diameter of the upper end of the mouth part 2.

When fitting the cap 5, place the cylindrical body 9 of the cap 5 on the upper end of the mouth part 2 and turn the cap 5 to the right in FIG. The protrusion 6 is driven downward by the inclination. Here, since the outer diameter of the mouth barrel part 2 is formed to increase toward the lower end, the protrusion 6 is pushed in the radial direction of the mouth barrel part 2, and the cylinder body 9 expands in the radial direction. do. Then, when the cap 5 is further rotated, when the protrusion 6 matches the groove 4, the cylindrical body 9 is divided by the slit 10 and has elasticity, so that it returns from the expanded state to the original state. As the protrusion 6 tries to move, the protrusion 6 falls into the groove 4 and fits into the groove with a sound.

When removing the cap 5, when the cap 5 is turned in the opposite direction, the protrusion 6 is pushed against the sloping inner wall surface 4a of the upper end of the groove 4 and comes out of the groove 4, so that the cylindrical body 9 is expanded again. . Then, the cylinder body 9 pushes the outer peripheral surface of the mouth tube part 2 via the protrusion 6 due to its spring property, but
Since this outer circumferential surface is an inclined surface, the cap 5 rises due to the reaction force from the outer circumferential surface. Therefore, the cap 5 can be easily removed.

[Effect of idea]

According to the present invention, since the protrusion 6 is fitted into the groove 4 to maintain the fitting state of the cylinder body 9 to the mouth part 2, the cap 5 can be installed securely and the cap 5 can be easily rotated too much. The fit will not become loose.

Moreover, the slit 10 is provided in the cylinder body 9 to give it spring properties, and a fitting sound is emitted when the protrusion 6 is fitted into the groove 4, so that it is possible to hear the fitting of the cap 5. There is no risk of incorrect operation.

Further, when the cap 5 is removed, the cap 5 is pushed up against the inclined outer circumferential surface of the mouth barrel portion 2, so that the removal work of the cap 5 is facilitated. Looking at this in reverse, if the cap 5 is removed and placed on the spout 2 while the contents of the container 1 are being used, the cap 5 will be in a floating state. Therefore, it is possible to visually confirm that the cap 5 is open, and there is no possibility of forgetting to close the cap 5 or misunderstanding that the cap 5 is already closed and tipping it sideways, thereby spilling the contents.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIGS. 2 and 3 are half-sectional views of the container structure described in Japanese Utility Model Publication No. 15485/1985, and the engagement between the cap and the mouth barrel. A cross-sectional view showing the condition, Figure 4 is from the 1970s.
FIG. 5 is a perspective view of the container structure described in Japanese Utility Model Publication No. 52-26063. 1...Container, 2...Mouth part, 3...Thread, 4...
...Concave groove, 5...Cap, 6...Protrusion, 9...Cylinder, 10...Slit.

Claims (1)

[Scope of utility model registration request] The mouth barrel part 2 of the container 1 is made smaller in diameter toward the upper end, and the outer circumferential surface of the mouth barrel part 2 is an inclined surface, and a plurality of inclined threads 3 are provided protrudingly on the outer peripheral surface of the mouth barrel part 2. Forming grooves 4 of a required length along the threads 3 on the outer circumferential surface of the mouth tube portion 2 below each thread 3,
On the other hand, a cap 5 having a cylindrical body 9 to be fitted into the mouth tube part 2 is provided, and the inner surface of the cylindrical body 9 is provided with each of the grooves 4.
Protrusions 6 having a length that fits in the cylindrical body 9 and inclined corresponding to the inclination of the thread 3 are provided in a manner corresponding to the number of the respective grooves 4, and each of the protrusions 6 of the cylindrical body 9 A cap mounting structure characterized in that a vertical slit 10 is provided between the caps.