JPH0848352A - Container cap - Google Patents

Abstract

PURPOSE:To minimize a hinge appearing on an outer face and eliminate a protrusion outward. CONSTITUTION:A container cap 1 having a main cap 2 attached to an opening of a container and a sub-cap 6 screwed to the main cap via a hinge comprises integral coupling of parts of an axial end rim of respective peripheral walls of the main cap and the sub-cap via a flexible thin part 7. A part inside of the thin part in a radial direction between a top wall 3 of the main cap and an internal face of the sub-cap is connected to an end integrally molded with either of the main cap or the sub-cap via an elastic piece 8 having another end which can be fixed to the other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap to be attached to an opening of a container for seasonings, pharmaceuticals, cosmetics, etc. It relates to a cap that is hinged on one side.

[0002]

2. Description of the Related Art A synthetic resin cap may be attached to the opening of a container for seasonings, medicines, cosmetics and the like. As such a cap, there is known a cap including a main cap having a spout opening to the top wall and a sub-cap closing the spout.

For example, Japanese Utility Model Publication No. 1-66355 discloses that
The cap base (main cap) and the lid (sub cap) are connected by a flexible thin hinge part, and the part sandwiched between the parts connected by the hinge part is connected by elastic pieces. It is proposed that the biasing force in both directions of opening and closing is reversed.

[0004]

In this case, thin hinges appear at four places on the outer surface, and when the sub-cap is opened, the elastic pieces project outward, which impairs the appearance. ..

The present invention has been devised in order to eliminate such disadvantages of the prior art, and its main purpose is to:
It is an object of the present invention to provide a container cap configured so that the hinge portion that appears on the outer surface is minimized and that there is no protrusion to the outside.

[0006]

According to the present invention, such an object is for a container having a main cap attached to the opening of the container and a sub-cap hinged to the main cap via a hinge. In the cap, a part of the axial end edges of the peripheral walls of the main cap and the sub cap are integrally coupled via a flexible thin portion, and the top wall of the main cap and the sub cap are A radially inner portion of the thin portion between the inner surface and one end of the main cap and the sub cap integrally formed,
It is achieved by providing a cap for a container, characterized in that it is connected via a resilient piece having the other end which can be fastened to the other one.

[0007]

According to this structure, the thin hinge portion connecting the main cap and the sub cap is provided at one location, and the elastic piece that exerts the reverse biasing force is provided inside the hinge portion in the radial direction. Therefore, the part exposed to the outer surface can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings.

1 to 3 show a container cap constructed according to the present invention. The cap 1 is injection-molded in a deployed state, and has a generally capped cylindrical main cap 2 fitted in an opening (not shown) of the container body and a top wall 3 of the main cap 2. A stopper 5 for closing the provided spout 4 is composed of a sub-cap 6 projectingly provided on the inner surface thereof, and is integrally formed of a synthetic resin material having high elasticity such as polypropylene resin. More specifically, both of these 2 and 6 are connected to each other at a part of the axial edge of the peripheral wall thereof via a flexible thin hinge portion 7.

An elastic piece 8 for generating a reversing elastic force is integrally formed on a portion of the inner surface of the sub-cap 6 adjacent to the radially inner side of the protruding portion of the plug 5. This bullet piece 8
Is a thin hinge portion 10 on the inner surface of the top wall 9 of the sub cap 6.
And one end connected to each other via the hinge portion 7 of the main cap 2.
Slits 11 opened at positions adjacent to the inner side in the radial direction of the
Has a thin hinge portion 12 so as to be connected to the main cap 2 and to form a locking piece portion 13 which is flexible and has the other end.

Next, the usage procedure of this embodiment will be described. First, the sub cap 6 in the expanded state is raised to about 90 °, and the tip of the locking piece 13 is inserted into the slit 11. The tip of the locking piece 13 is slightly protruding,
When the locking piece portion 13 is fully inserted into the slit 11, the tip of the locking piece portion 13 is caught by the inner end of the slit 11 and is prevented from coming off. In this state, the main cap 2 is fitted into the opening of the container body in advance.

The elastic piece 8 is naturally bent to some extent, and when the sub cap 6 is rotated in the closing direction, it is bent in a U shape, but due to the elastic force in the extending direction, The elastic urging force acting on the sub cap 6 is reversed in the closing direction and the opening direction at the opening angle as a boundary (FIG. 3).

When the sub cap 6 is closed and the tip of the plug 5 on the inner surface of the sub cap 6 is inserted into the spout 4 of the main cap 2,
A constriction that slightly expands in diameter is formed at the tip of the stopper 5, and the elasticity of the material itself tightly fits the spout 4 to maintain the closed state.

At the time of opening, the finger hook 14 protruding from the open end of the sub cap 6 may be pushed up.

[0015]

As described above, according to the present invention, since the hinge portion appearing on the outer surface can be minimized and there is no protrusion to the outside, the number of parts is not increased. A great effect can be exerted in improving the handleability and designability of this type of cap.

[Brief description of drawings]

FIG. 1 is a top view of a cap according to the present invention in a molded state.

FIG. 2 is a vertical sectional view of a cap according to the present invention in a molded state.

FIG. 3 is a vertical cross-sectional view of the cap according to the present invention with the sub cap closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap 2 Main cap 3 Top wall (of main cap) 4 Pouring outlet 5 Stopper 6 Sub cap 7 Hinge part 8 Resilient piece 9 Top wall (sub cap) 10 Hinge part 11 Slit 12 Hinge part 13 Locking piece part 14 Finger rest

Claims (1)

[Claims] 1. A container cap having a main cap attached to an opening of the container and a sub cap hinged to the main cap via a hinge, wherein each of the peripheral walls of the main cap and the sub cap. A part of an axial end edge of the thin wall portion is integrally connected via a flexible thin wall portion, and a radially inner portion of the thin wall portion between the top wall of the main cap and the inner surface of the sub cap. Is connected via an elastic piece having one end integrally formed with one of the main cap and the sub cap and the other end fixable to the other one. cap.