JP2002019807A - Separation collection cap made of synthetic resin - Google Patents

Abstract

(57) [Summary] (Corrected) [PROBLEMS] To provide a separation / collection cap made of synthetic resin having a weakening line for splitting, wherein the weakening line does not break when plugged and is easily torn when sorting and collecting. A locking projection (15) is formed on the inner surface of an outer cylinder (10) of an inner plug (1), and a weakening line (19) for tearing formed on the inner plug and an upper lid (3) screwed to the inner plug are provided. An engaging member 16 is provided on an upper end surface of the outer cylinder, and a locking member 26 is provided on a lower end portion of the upper lid so as to oppose the outer surface of the engaging member and regulate its movement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap fitted to a mouth of a container.
The present invention relates to a synthetic resin separating and collecting cap having a weakening line for cleavage.

[0002]

2. Description of the Related Art In recent years, resource recycling campaigns have become popular, and used containers with caps are also being recycled. When recycling this container, since the material of the container and the cap are different, both must be separated. However, since the locking projection formed on the inner surface of the outer cylinder of the cap is pressed against the engagement recess formed on the outer peripheral surface of the container mouth, the cap cannot be easily removed.

Therefore, in order to solve this problem, a weakening line such as a thin portion from the upper wall of the fitting portion of the cap to the lower end of the outer cylinder is provided, and a knob is provided to facilitate tearing of the weakening line. I have. When the knob is pulled in a predetermined direction, the weakening line is torn off and the locking projection of the cylindrical portion is cut, so that the locking force is weakened, and the knob is easily detached.

[0004]

However, since the weakening line is formed so as to be easily torn, it is weaker than other parts. Therefore, when the stopper is pushed by the outer peripheral surface of the container mouth portion at the time of tapping and the outer cylinder spreads radially outward,
The weakening line may be broken.

In order to prevent the breakage of the weakened line, it is conceivable to increase the thickness of the weakened line. But,
When the thickness is made thick in this manner, the weakened line becomes difficult to be torn, so that the separated collection cannot be performed smoothly.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a cap in which a weakened line does not break when plugged and is easily torn when sorted and collected.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a locking projection formed on the inner surface of an outer cylinder of an inner plug, a weakening line for tearing formed on the inner plug, and a threaded connection with the inner plug are provided. And a separating / collecting cap made of synthetic resin comprising: an engaging member provided on an upper end surface of the outer cylinder; and a lower end portion of the upper cover facing an outer surface of the engaging member. And a locking member for restricting the movement thereof.

According to the present invention, a locking projection formed on the inner surface of the outer cylinder of the inner plug, a weakening line for tearing formed on the inner plug, and an upper lid screwed to the inner plug are provided. A separating / collecting cap made of synthetic resin provided; a rib erected on the upper end surface of the outer cylinder, and a lower end portion of the upper lid provided opposite to the outer surface of the rib to regulate the movement thereof. An annular regulating wall.

According to the present invention, a locking projection formed on the inner surface of the outer cylinder of the inner plug, a weakening line for tearing formed on the inner plug, and an upper lid screwed to the inner plug are provided. A separating / collecting cap made of synthetic resin, comprising: a projection erected on an upper end surface of the outer cylinder; and a ring provided on an abutting surface of a lower end portion of the upper lid and loosely fitted with the projection. And a groove.

According to the present invention, a locking projection formed on the inner surface of the outer cylinder of the inner plug, a weakening line for tearing formed on the inner plug, and an upper lid screwed to the inner plug are provided. A synthetic resin separation / collection cap comprising: an annular concave portion provided on an upper end surface of the outer cylinder; and a convex portion provided on a contact surface of a lower end portion of the upper lid and loosely fitted into the annular concave portion. And characterized in that:

[0011]

The inventor of the present invention believes that the breakage of the line of weakness at the time of stoppering is caused by the outward movement of the outer cylinder. It was considered that the above problem could be solved by preventing the movement or moving the weakened line within a range where the line of weakness does not break.

Therefore, an engaging member provided on the upper end surface of the outer cylinder of the inner plug, and a locking member provided on the lower end portion of the upper lid so as to face the outer surface of the engaging member and restrict the movement thereof. , The outward movement of the outer cylinder at the time of plugging is suppressed.

The lines of weakness are score (thin part), perforation,
It is formed using a slit, etc., but as this weakening line, a vertical weakening line extending from the upper wall to the lower end of the outer cylinder, extending diagonally upward from the lower end of the outer cylinder, and further extending circumferentially along the locking ridge. Inclined weakening line, a circumferential weakening line provided on the upper wall inside the outer cylinder, and the like.

The engaging member and the locking member are appropriately selected as necessary. For example, as the engaging member, an annular rib, a plurality of arc-shaped ribs arranged at intervals in the circumferential direction, a cross section Protrusions such as trapezoids, annular recesses, etc. are adopted,
Further, as the locking member, an annular regulating wall for locking the rib, an annular groove loosely fitted to the projection, a convex portion loosely fitted to the annular recess, and the like are employed.

The engaging member and the engaging member face each other with a play gap therebetween. However, they may be brought into contact with each other as long as the upper lid is not attached or detached.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. An upper lid 3 is screwed onto the screw portion 2 of the inner plug 1. The spout 4 of the inner plug 1 is provided with a blocking wall 6 with a score 5, and the blocking wall 6 is provided with a pull ring 7.

A longitudinal weakening line 11 extending from the upper end to the lower end of the outer cylinder 10 of the inner plug 1 is formed. This vertical weakening line 11 is continuous with the slit 12. The slit 12 is formed in the upper wall 14 between the outer cylinder 10 and the inner cylinder 13 in the circumferential direction, and one end of the slit 12 is continuous with a circumferential weakening line 19 extending in the circumferential direction.

The inner surface of the lower end of the outer cylinder 10 has a locking projection 15
Is provided on its upper end surface 10a.
A rib 16 is provided. The ribs 16 are formed in a circular arc shape in cross section, and a plurality of ribs 16 are provided at intervals in the circumferential direction.

The upper cover 3 has a cylindrical body 20 and a top plate 21. The top plate 21 is provided with an annular seal wall 22 projecting from the tip end of the spout 4, and a screw screwed with the screw portion 2 is provided on the inner surface of the cylindrical body 20. A locking member, for example, an annular regulating wall 26 provided at intervals is provided on the outer periphery of the portion 20a. The annular regulating wall 26 is connected to the lower end 20a.

The annular regulating wall 26 is formed on the outer surface 1 of the rib 16.
6a through the loose fit gap S, and the contact surface 1 at the lower end thereof.
6b is in contact with the upper end surface 10a of the outer cylinder 10. The gap S is provided to prevent the annular regulating wall 26 of the upper cover 3 from contacting the rib 16 when the upper cover 3 is attached or detached.

Next, the operation of this embodiment will be described.
The cap C is closed by screwing the upper lid 3 to the inner plug 1. The cap C is fitted to the mouth 9 of the container by tapping, but at this time, the locking projection 15 is pressed outward by the mouth 9 of the container, and the outer cylinder 10 tries to expand in the radial direction. I do.

However, since the rib 16 is provided on the upper end surface 10a of the outer cylinder 10, when the outer cylinder 10 moves by the interval of the loose fit gap S, the outer surface 16a of the rib 16
Is engaged with the inner surface of the annular regulating wall 26 as shown in FIG.
You can no longer move. Therefore, since the outer cylinder 10 does not expand any further, the weakening lines 11 and 19 do not break.

A second embodiment of the present invention will be described with reference to FIG. 5. The difference between this embodiment and the first embodiment is as follows. (1) The rib 16 is provided on the outer edge of the upper end surface 10a of the outer cylinder 10. (2) The annular regulating wall 26A is extended to the lower end of the outer cylinder 10, and the both 26A and 10 are opposed to each other via the loose fitting gap S.

A third embodiment of the present invention will be described with reference to FIG. 6. The difference between this embodiment and the first embodiment is as follows. (1) The outer peripheral side of the upper end surface 10a of the outer cylinder 10 is shaved, and the rib 16
A ring-shaped notch portion 30 was formed on the outer surface side of. (2) The annular regulating wall 36 is extended to bring the contact surface 36b into contact with the upper surface 30a of the ring-shaped notch 30, and the rib 1
6. A loose fitting gap s is formed between the outer surface 16a of FIG. 6 and the inner surface of the annular regulating wall 36.

A fourth embodiment of the present invention will be described with reference to FIG. 7. The difference between this embodiment and the first embodiment is as follows. (1) A projection 46 having a trapezoidal cross section is provided on the upper end surface 10a of the outer cylinder 10.
Was established. (2) A pressing surface 46a that contacts the upper wall 14 and the upper end surface 10a is formed on the outer periphery of the lower end portion 20a of the cylindrical body 20.
An annular groove 40 for loosely fitting with the projection 46 is formed in 6a. A loose fit gap is provided between the annular groove 40 and the protrusion 46, but this gap may be omitted if it does not affect the fit.

A fifth embodiment of the present invention will be described with reference to FIG. 8. The difference between this embodiment and the first embodiment is as follows. (1) An annular concave portion 56 having an inverted trapezoidal cross section is provided on the upper end surface 10a of the outer cylinder 10. (2) A pressing surface 50a is formed on the outer periphery of the lower end portion 20a of the cylindrical body 20 so as to contact the upper wall 14 and the upper end surface 10a.
0a is provided with a convex portion 50 that fits loosely with the annular concave portion 56.

[0027]

The present invention has been configured as described above.
Even if the outer cylinder expands its diameter and tries to move outward during tapping, it is regulated by the locking member. For this reason, since the diameter expansion of the outer cylinder is suppressed, a large force is not applied to the weakened line, so that breakage can be prevented. In particular, when a tearing start portion of the weakened line, that is, a slit or the like is formed on the upper wall, this suppression effect is large. Further, if a loose fitting gap is provided between the engaging member and the locking member, they do not come into contact with each other when the upper lid is opened and closed, so that it can be opened and closed smoothly.

[Brief description of the drawings]

FIG. 1 is a plan view of an inner plug showing a first embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view of a cap showing the first embodiment of the present invention.

FIG. 3 is an enlarged view of a main part of FIG. 1;

FIG. 4 is an enlarged sectional view of a main part showing another state of FIG. 3;

FIG. 5 is an enlarged sectional view of a main part showing a second embodiment of the present invention.

FIG. 6 is an enlarged sectional view of a main part showing a third embodiment of the present invention.

FIG. 7 is an enlarged sectional view of a main part showing a fourth embodiment of the present invention.

FIG. 8 is an enlarged sectional view of a main part showing a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner plug 10 Outer cylinder 10a Upper end face 11 Vertical weakening line 16 Rib 16b Contact surface 19 Circumferential weakening line 20 Cylindrical body 26 Annular regulating wall

Claims (6)

[Claims] A locking projection formed on the inner surface of the outer cylinder of the inner plug;
A synthetic resin separation / collection cap comprising a splitting weakening line formed in the inner plug and an upper lid screwed to the inner plug; provided on an upper end surface of the outer cylinder. A separating member made of synthetic resin, comprising: an engaging member; and a locking member provided at a lower end portion of the upper cover so as to face an outer surface of the engaging member and restricting the movement thereof. cap. 2. A locking projection formed on the inner surface of the outer cylinder of the inner plug,
A synthetic resin separation / collection cap comprising a splitting weakening line formed in the inner plug, and an upper lid screwed to the inner plug; A synthetic resin separation / collection cap, comprising: a rib provided at a lower end portion of the upper lid facing an outer surface of the rib; 3. The synthetic resin separating and collecting cap according to claim 2, wherein the rib is opposed to the annular regulating wall through a loose fitting gap. 4. The separating and collecting cap made of synthetic resin according to claim 2, wherein the rib is in contact with the annular regulating wall. 5. A locking projection formed on the inner surface of the outer cylinder of the inner plug,
A synthetic resin separation / collection cap comprising a splitting weakening line formed in the inner plug, and an upper lid screwed to the inner plug; And a ring-shaped groove formed on the contact surface of the lower end of the upper lid and loosely fitted with the protrusion. 6. A locking projection formed on the inner surface of the outer cylinder of the inner plug,
A synthetic resin separation / collection cap comprising a splitting weakening line formed in the inner plug and an upper lid screwed to the inner plug; formed on an upper end surface of the outer cylinder. A synthetic resin separation / collection cap comprising: an annular concave portion; and a convex portion provided on a contact surface of a lower end portion of the upper lid and loosely fitted into the annular concave portion.