JP2989097B2 - 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 having an improved opening / closing function of an upper lid with respect to a cap body.

[0002]

2. Description of the Related Art As a conventional cap, there is a cap in which a cap body is attached to a mouth of a container and an upper lid is freely opened and closed with respect to the cap body. Further, such a cap is provided with a leaf spring between the cap body and the upper lid, as disclosed in Japanese Utility Model Laid-Open No. 3-69656 and Japanese Utility Model Laid-Open No. 63-88965. Is configured to open the upper lid by the urging force.

[0003]

However, the leaf spring has a strong urging force, and the upper lid is rapidly opened. Further, since the leaf spring is generally made of metal, it is easily rusted, and the rust may be mixed into the contents in the container poured out from the nozzle of the cap body.

[0004] The present invention has been made in view of the above circumstances, and no rust is mixed into the contents.
An object of the present invention is to provide a cap that can slowly open an upper lid at an appropriate speed by a restoring force of a rubber-like elastic body.

[0005]

SUMMARY OF THE INVENTION According to the present invention, an upper lid is openably and closably connected to a cap body via a hinge, and is provided on the cap body and the upper lid. in a cap and a lid locking means for keeping the lid position, fitted with a rubber-like elastic material in at least one vicinity of the hinge of the cap body or the upper lid, a rubber-like elastic body
Elastic deformation between the cap body and the top lid when the top lid is closed
When the upper lid is released by the lid locking means
Is configured to open the upper lid by its elastic restoring force , and the rubber-like elastic body is provided with two mounting ends provided near at least one hinge of the cap body or the upper lid.
And the both side surfaces of the mounting end are sandwiched between the ridges .

[0006]

According to the present invention, the following effects are obtained. Since the rubber elastic body disposed between the cap body and the upper lid is configured to elastically deform when the upper lid is closed, if the closing operation of the lid closing means is released, the elastically deformed rubber elastic body is The upper lid can be opened by a restoring force (spring force). Since this restoring force is not excessive as in a leaf spring or the like, the upper lid can be opened slowly at an appropriate speed.

[0007] Since the object that gives the restoring force to the upper lid is a rubber-like elastic body and is not made of metal such as a leaf spring, it does not corrode. Therefore, rust is mixed into the contents poured out from the nozzle of the cap body. There is no.

In order to reliably open the upper lid by the restoring force (spring force) of the rubber-like elastic body, it is desirable to use a rubber-like elastic body having a large spring force. Here, the rubber-like elastic body having a large spring force has material properties such that the hardness is large and the compression set is small. However, such a rubber-like elastic body having a high hardness and a small compression set has an excessive stress concentration around a mounting end fixed to a cap body or the like when elastically deformed when the upper lid is closed. In this case, cracks occur at the stress concentration portion, and the desired restoring action cannot be achieved. However, in the present invention, the mounting end of the rubber-like elastic body is mounted by fitting both sides of the mounting end to the two-surface mounting portion formed on at least one of the cap body and the upper lid. As compared with a case in which the mounting end portion is mounted by fitting the entire peripheral surface of the mounting end portion of the hole-shaped mounting portion and the like around the mounting end portion in a state where the mounting end portion is elastically deformed when the upper lid is closed. The generated stress concentration can be reduced (the rubber-like elasticity fitted into the hole-shaped mounting portion causes a large stress concentration due to the bent outer surface being pressed against the hole corner during elastic deformation. The fitted rubber-like elastic body smoothly deforms its bent outer surface without any restraint in the attachment portion between the two surfaces during elastic deformation, and does not cause large stress concentration.) Therefore, even if a rubber-like elastic body having a large hardness, a small compression set, and a large spring force is used, cracking due to stress concentration is unlikely to occur, and a stable elastic restoring action at the time of opening the lid is achieved. Make sure it opens.

[0009]

FIG. 1 is a schematic view showing a container to which an embodiment of the present invention is applied, FIG. 2 is a schematic view showing a state in which a cap is opened in FIG. 1, and FIG. 3 is a view showing a state in which a cap is closed in FIG. FIG.

[0010] As shown in FIG.
The cap body 12 is attached to the opening of the container 1 and the container body 11 is squeezed (squeezed) while the cap 12 is open.
It is possible to pour out contents such as detergents, etc.

As shown in FIG. 2, the cap 12 has an upper lid 15 that can be opened and closed via a hinge 14 on a cap body 13. The cap body 13, the hinge 14, and the upper lid 15 are integrally formed of a thermoplastic resin such as polypropylene.

The cap body 13 includes a top surface 22 having a spout 21, a mounting tube 23 integrally provided around the spout 21 of the top surface 22, and an integrated tube around the mounting tube 23 of the top surface 22. And an outer cylinder 24 that is provided. The cap body 13 is provided with an outer cylinder 24 on the front side of the cap 12.
Has a concave portion 25 at a position facing the hinge 14 of FIG. The mounting cylinder 23 has a round cylindrical shape and has a female screw 26, and the female screw 26 is screwed to a male screw provided in an opening of the container main body 11, so that the cap 12 can be mounted on the container main body 11. . The outer tube 24 has an elliptical tube shape that matches the outer diameter of the container body 11.

The upper lid 15 is bowl-shaped and has a projection-shaped sealing engagement portion 31 at the center of the inner surface thereof, which can be engaged with the spout 21 of the cap body 13 in a sealed state to maintain the closed state. . The spout 21 and the sealing engagement portion 31 constitute a lid locking means of the present invention, and lock each other when the upper lid 15 is closed to generate a lid locking force. In addition, the upper lid 15 is
A lid opening operation section 32 capable of applying a lid opening operation force is provided above the recess 25 provided in the cap body 13 on the front side of the cap body 13.

On the upper surface of the top surface 22 of the cap body 13 near the hinge 14, two convex strips 41, 41 forming the two-surface mounting portion 40 are formed so as to protrude. Retaining protrusions 41A, 41A are formed on the upper portions of the opposing inner surfaces of the two convex strips 41, 41.

A rubber-like elastic body 42 is fitted to the mounting portion 40 between the two surfaces of the cap body 13. The rubber-like elastic body 42 has a substantially L-shape, and the arrow-shaped mounting end 43 is
In a state of being hooked on the convex pieces 41, 41 of the face-to-face mounting part 40, both side faces of the mounting end 43 are fitted between the convex pieces 41, 41 of the face-to-face mounting part 40, and are prevented from falling off. Projections 41A, 4
1A prevents it from falling off. The rubber-like elastic body 42
Is formed such that the distal end portion 44 has a tapered wedge shape, and the distal end portion 4
The top end of the upper cover 4 is brought into contact with the inner surface of the upper cover 15 so that the upper cover 15 can be compressed and bent in the closing process.

The rubber-like elastic body 42 is made of rubber, elastomer or the like (for example, KE 951U manufactured by Shin-Etsu Chemical Co., Ltd. as a compound, and C-C
8).

That is, as shown in FIG. 3, during the process of closing the upper lid 15, the distal end 44 of the rubber-like elastic body 42 comes into contact with the inner surface of the upper lid 15 and is pressed. By this pressing, the distal end portion 44 of the rubber-like elastic body 42 is bent inward, and the rubber-like elastic body 42 is bent and deformed at the A portion 42A and the B portion 42B,
When the upper lid 15 is closed, the other end 44 is compressed and deformed as being folded between the inner surface 42C of the rubber-like elastic body 42 and the inner surface of the upper lid 15.

The cap 12 is opened and closed as follows. (1) When the cap 12 is closed, the sealing engagement portion 31 of the upper lid 15
Engages the spout 21 of the cap body 13 in a sealed state to generate a lid closing force, and the closed state is maintained. At this time, the rubber-like elastic body 42 is connected to the cap body 13 and the upper lid 1.
5, and elastic deformation of bending and compression is given.

(2) When the cap 12 is opened, the container body 11
Is held with one hand, and the opening operation part 32 of the upper lid 15 is pushed up by the opening operation force applied by, for example, the thumb. This allows
The upper lid 15 is pushed up in the opening direction with the hinge 14 as a center, so that the sealing engagement portion 31 of the upper lid 15 is detached from the spout 21 of the cap body 13. This sealing engagement part 3
At the same time as the disengagement of the spout 1 from the spout 21, the elastic restoring force of the rubber-like elastic body 42 in the elastically deformed state (1)
5 acts as an opening force to open the upper lid 15.

The operation of this embodiment will be described below. Since the rubber-like elastic body 42 interposed between the cap body 13 and the upper cover 15 is configured to elastically deform when the upper cover 15 is closed, the closed state of the cap body 13 and the upper cover 15 is released. Then, this elastically deformed rubber-like elastic body 4
The elastic restoring force of 2 opens the upper lid 15. This restoring force is not excessive as in the case of a coil spring.
Can be opened slowly at an appropriate speed.

The member that provides the restoring force to the upper lid 15 is a rubber-like elastic body 42, which is not made of metal such as a coil spring, so that it does not corrode. There is no mixing.

Further, since the mounting end 43 of the rubber-like elastic body 42 is fitted to the mounting portion 40 of the cap body 13 and no adhesive or the like is used, the adhesive does not flow out into the contents in the container. Further, the phenomenon that the adhesive is deteriorated by the contents does not occur.

The mounting end 43 of the rubber-like elastic body 42 is attached to the two-surface mounting portion 40 formed on the cap body 13 by fitting both sides of the mounting end 43 to the mounting end. The portion 43 is mounted around the mounting end 43 under the condition that the upper end 15 is elastically deformed when the upper lid 15 is closed, as compared with a configuration in which the entire peripheral surface of the mounting end 43 is fitted to the hole-shaped mounting portion. The resulting stress concentration can be reduced. That is, the rubber-like elastic body 42 fitted to the two-surface mounting portion 40 does not restrict its bent outer surface between the two convex pieces 41, 41 constituting the two-surface mounting portion 40 during elastic deformation. Without being deformed smoothly, large stress concentration does not occur. Therefore, even if the rubber-like elastic body 42 having a large hardness, a small compression set, and a large spring force is used, cracks due to stress concentration hardly occur, and a stable elastic restoring action is achieved when the lid is opened. Fifteen
Make sure to open.

The mounting end portion 43 of the rubber-like elastic body 42 is provided on the cap body 13 with the mounting piece 41 of the two-surface mounting portion 40,
41, the fitting and pushing force is small, and the assembling workability is good.

As a mounting structure for the rubber-like elastic body 42, a through mounting hole is provided in a portion of the top surface portion 22 between the mounting tube 23 and the outer surface tube 24, and the mounting hole is provided in the mounting hole.
Since the mounting end 43 is not inserted and fixed, the distance between the mounting cylinder 23 and the outer cylinder 24 can be reduced. This makes it possible to increase the diameter of the mounting cylinder 23 with respect to a fixed cap outer diameter, increase the diameter of the content filling nozzle inserted into the mounting cylinder 23, and enable high-speed filling with a large filling flow rate.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Anything is included in the present invention. For example, the rubber-like elastic body that is elastically deformed between the cap body and the upper lid when the lid is closed may be any as long as it is fitted to the two-face attachment portion formed on at least one of the cap body and the upper lid. Also,
The closure locking means provided on the cap main body and the upper lid is not limited to the combination of the inlet on the cap main body side and the sealing engagement part on the upper lid side, and the locking manner is not limited. good.

[0027]

As described above, according to the present invention, it is possible to obtain a cap which can prevent the rust from being mixed into the contents and can slowly open the upper lid at an appropriate speed by the restoring force of the rubber-like elastic body. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a container to which an embodiment of the present invention is applied.

FIG. 2 is a schematic diagram showing a state where a cap is opened in FIG. 1;

FIG. 3 is a schematic diagram showing a state in which a cap is closed in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Cap 13 Cap main body 14 Hinge 15 Upper lid 21, 31 Closed lid locking means 40 Two-plane mounting part 42 Rubber-like elastic body 43 Mounting end

Claims (1)

(57) [Claims] An upper lid is openably and closably coupled to a cap body via a hinge. The upper lid is provided on the cap body and the upper lid, and is locked to each other when the upper lid is closed to keep the upper lid in a closed position. Means, a rubber elastic body is attached to at least one of the cap body and the upper lid near the hinge, and the rubber elastic body is a cap.
When the upper lid is closed between the body and the upper lid, it elastically deforms,
When the lid is released by the stop means, its elasticity
The upper lid is opened by a restoring force , and the mounting end of the rubber-like elastic body is located between at least one of the protrusions provided on the cap body or at least one hinge of the upper lid. A cap characterized in that both side surfaces of a mounting end portion are clamped .