JP3229132B2 - Container cap - Google Patents

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. The present invention relates to a cap hinged to a single opening.

[0002]

2. Description of the Related Art A cap made of a synthetic resin is sometimes attached to an opening of a container for a seasoning, a medicine, cosmetics, or the like. As such a cap, a cap comprising a main cap having a spout opening on a top wall and a sub-cap for closing the spout is known.

For example, Japanese Utility Model Laid-Open No. 1-66355 discloses that
The cap base (main cap) and the lid (sub cap) are connected by a thin flexible hinge portion, and a portion sandwiched by the portions connected by the hinge portion is connected by a resilient piece. An arrangement has been proposed in which the biasing force for opening and closing in both directions is reversed at an angle.

[0004]

In this case, four thin hinge portions appear on the outer surface, and the resilient pieces protrude outward when the sub-cap is opened, so that the appearance is impaired. .

The present invention has been devised to solve such disadvantages of the prior art, and its main objects are as follows.
An object of the present invention is to provide a container cap configured to minimize a hinge portion that appears on an outer surface and to have no outward protrusion.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided, in accordance with the present invention, a container 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. A cap (1) , wherein a part of an axial end of each peripheral wall of the main cap (2) and the sub-cap (6) is integrally connected via a thin-walled portion (hinge portion 7) that can be bent. And the top wall of the main cap (3)
A radially inner portion of the thin portion between the inner cap and the inner surface of the sub-cap is formed integrally with one of the main cap and the sub-cap at one end (hinge portion 10).
And an elastic piece (8) having the other end (hinge part 12) that can be fastened to one of the other ends , and before the lid is opened.
Connect the connecting end of the resilient piece to the sub cap with the thin portion
This is achieved by providing a container cap characterized in that it is positioned above the container cap.

[0007]

According to this structure, a thin hinge portion connecting the main cap and the sub cap is provided at one place, and a resilient piece for exerting a reverse biasing force is provided radially inside the hinge portion. Therefore, the portion exposed to the outer surface can be reduced.

[0008]

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

FIGS. 1 to 3 show a container cap constructed according to the present invention. The cap 1 is injection-molded in an unfolded state, and has a substantially cylindrical bottomed main cap 2 fitted into an opening (not shown) of the container body and a top wall 3 of the main cap 2. A plug 5 for closing the provided spout 4 comprises a sub-cap 6 protruding from its inner surface, and is integrally formed of an elastic synthetic resin material such as polypropylene resin. More specifically, these two 2 and 6 are connected to each other at a part of the axial end edge of the peripheral wall via a thin hinge portion 7 which is flexible.

A resilient piece 8 for generating a reversing resilient force is formed integrally with a portion of the inner surface of the sub-cap 6 adjacent to a radially inner side of the protruding portion of the plug 5. This bullet 8
A thin hinge portion 10 is provided on the inner surface of the top wall 9 of the sub-cap 6.
And the hinge portion 7 of the main cap 2
11 opened at a position adjacent to the inner side in the radial direction of
And the other end forming a locking piece 13 which is made flexible with a thin hinge portion 12 to be connected to the main cap 2.

Next, the operation of the present embodiment will be described. First, the unfolded sub-cap 6 is raised up to approximately 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 13 is fully inserted into the slit 11, the tip of the locking piece 13 is caught on the inner end of the slit 11 and is prevented from falling off. In this state, the main cap 2 is fitted to the opening of the container body in advance.

The resilient piece 8 is in a natural state when it is curved to some extent, and when the sub-cap 6 is turned in the closing direction, it is bent in a U-shape. The elastic biasing force acting on the sub-cap 6 is reversed between the closing direction and the opening direction with the opening angle as a boundary (FIG. 3).

When 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 by closing the sub-cap 6,
The tip of the plug 5 is formed with a constriction that slightly increases in diameter, and is tightly fitted into the spout 4 by the elasticity of the material itself so that the closed state is maintained.

When opening, the finger hook 14 protruding from the open end of the sub-cap 6 may be pushed up. At the time of this opening
First, as shown by the two-dot chain line in FIG.
The hinge portion 12, which is the connection end of the resilient piece 8 with respect to the
As a thin portion connecting the cap 2 and the sub-cap 6
The dimensions of each part are determined so that it is located above
ing.

[0015]

As described above, according to the present invention, the hinge portion appearing on the outer surface can be minimized and the outward projection can be completely eliminated, so that the number of parts is not increased. A great effect can be achieved in improving the handleability and design of such a cap.

[Brief description of the drawings]

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

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

FIG. 3 is a longitudinal sectional view showing a state in which a sub-cap of the cap according to the present invention is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap 2 Main cap 3 Top wall (of main cap) 4 Spout 5 Plug 6 Subcap 7 Hinge part 8 Resilient piece 9 Top wall (of subcap) 10 Hinge part 11 Slit 12 Hinge part 13 Locking piece part 14 Finger hanging

Claims (1)

(57) [Claims] 1. A container cap comprising: a main cap attached to an opening of a container; and a sub-cap hinged to the main cap via a hinge, wherein each peripheral wall of the main cap and the sub-cap. A part of the axial end of the main body is integrally connected via a flexible thin part, and a radially inner part of the thin part between the top wall of the main cap and the inner surface of the sub-cap. Are connected via a resilient piece having one end integrally formed with one of the main cap and the sub-cap and the other end that can be fixed to one of the other caps , and the lid is opened. Connection of the elastic piece to the sub cap
A container cap having an end positioned above the thin portion .