JP2004067185A - Self-opening hinge cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-opening hinge cap which can be inexpensively manufactured. <P>SOLUTION: A lid 2 is integrally molded on a cap body 1 through hinges 3 and 3a by using a mold for injection molding. The cap body 1 and the lid 2 are connected with each other with an expansion and contraction opening member 4 at hinge 3 and 3a parts, and the lid 2 is constituted in such a way that the lid is self-opened around the hinges 3 and 3a as a center by action of contraction of this expansion and contraction opening member 4. The expansion and contraction opening member 4 is also integrally molded (two-color injection molding) by using the mold for injection molding when the lid 2 is molded. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap such as a plastic injection-molded container or case that can be opened and closed with a hinge, and more specifically, a so-called self-opening hinge that can be fully opened by itself when a closed claw (lock) is removed. Regarding the cap.
[0002]
[Prior art]
In a liquid container, cream container, or case (box), etc., which is injection-molded with plastic resin as a material, and can be opened and closed around a hinge, the cap body, lid and hinge are integrally molded by an injection molding method. There is something. Even if this cap is released by removing the locking claw and opening the lid, it opens slightly due to the action of the hinge, but for example to open 90 ° or more, it is necessary to first open the lid slightly with your fingertips . In addition, an L-shaped elastic plate other than a hinge is attached between the cap body and the lid in a so-called hinge cap, and the self-opening or self-closing operation is performed by the action of the elastic plate. There are also things. For example, Japanese Utility Model Publication Nos. 7-52043 and 7-18600, Utility Model Registration No. 2572383, JP-A Nos. 10-024949, 7-299352, and 10-120068.
However, also in the case of this known example, in order to fully open or fully close the lid, an initial movement operation of slightly moving the lid with a fingertip is required, and the closed lid is not fully opened by itself when the lock is released.
[0003]
Further, the hinge integrally formed with the lid is stopped, and for example, as shown in FIG. 12, the lid a is attached to the container b using the hinge-type support shaft c, and the coil spring d attached to the support shaft c is removed. When the lock is released by operating the lock claw e by operation, there is also a self-opening cap adopting a structure in which the lid a is fully opened by itself as shown in FIG.
[0004]
However, adopting a method in which the cover a is self-opening by attaching the cover a to the support shaft b or using the coil spring d increases the number of parts and the time and labor required for assembling. Become.
[0005]
[Problems to be solved by the invention]
The present invention is provided in view of such a point, and an object of the present invention is to provide a self-opening mechanism for a container, a case, and the like having a self-opening mechanism that can be integrally formed with a plastic resin material by using an injection mold. It is to provide a hinged cap.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the invention according to claim 1, in a self-opening hinge cap, a lid is integrally formed on a main body via a hinge, and the main body and the lid are provided with an elastic release member at the hinge portion. And the lid is self-opened around the hinge by the action of contraction of the elastic release member.
[0007]
Further, according to a second aspect of the present invention, in the first aspect of the present invention, the main body, the hinge, the lid, and the elastic opening member are integrally formed using an injection mold. To do.
[0008]
Further, in the invention according to claim 3, in the self-opening hinge cap, a lid is integrally formed on the main body via a hinge, and a spring elastic release member is incorporated in the hinge portion inside the lid. In a closed state, the spring elastic release member is compressed between the lid and the main body and contracts, and when the lid is unlocked, the lid self-opens around the hinge by the action of the spring elastic release member. It is characterized by the following.
[0009]
Further, according to a fourth aspect of the present invention, in the third aspect of the present invention, the main body, the lid, the hinge, and the spring elastic release member are integrally formed using an injection mold. To do.
[0010]
Further, in the invention described in claim 5, in the invention described in claims 1 to 3, the elastic release member or the spring elastic release member is provided between the left and right hinges or with one hinge at the center thereof. It is formed on the side.
[0011]
Further, in the invention described in claim 6, in the invention described in claims 3 to 5, the spring elastic release member projects in a curved or bent state outside the main body and the lid. Things.
[0012]
Further, in the invention described in claim 7, in the invention described in claim 6, the curved or bent portion of the spring elastic member is located above a horizontal plane passing through the rotation center of the hinge. It is assumed that.
[0013]
Furthermore, in the invention according to claim 8, in the invention according to claims 1 to 7, between the cap body and the elastic release member or the spring elastic release member, Are provided to protrude outward to change the fulcrum or a spring plate, and are configured to assist in the opening direction of the lid in an initial operation when the lid is opened.
[0014]
Further, according to the ninth aspect of the present invention, the projection or the spring plate according to the eighth aspect is formed on the cap body side or the elastic release member or the spring elastic release member side. is there.
[0015]
[Action]
The lid is freely openable and closable about the hinge, and the elastic release member or the spring elastic release member integrally formed by a mold is energized when the lid is closed, and is energized when the lid is unlocked. The force is released and the lid self-opens around the hinge. In the case where a projection or a spring plate is interposed between the elastic release member and the spring elastic release member, the elastic release member or the spring elastic release member is moved to the outside ( (Opening side). Then, when the lock is released, the opening operation is assisted in the initial operation of the lid, so that the lid can be fully opened even if the opening and closing operations are repeated many times.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
The object of the present invention is a container for cosmetics, beverages, etc., which is a hinge cap which opens and closes around a hinge integrally molded with a mold, or a self-opening of various containers, cases, etc., which are injection-molded with a plastic resin material. Applies to formula lids (caps). The hinge cap is composed of a main body attached to the mouth and neck of a container or the like by a screw or a fitting mechanism, a lid attached to the main body via a hinge, and a stretchable opening member or a spring elastic opening member. It is integrally molded using a molding die. The main body or case, the lid, and the hinge are made of the same material, and the elastic release member is made of a plastic resin having rubber elasticity, and is integrally formed using a so-called two-color injection molding technique. As the plastic resin having rubber elasticity, for example, Surlink (registered trademark) of Toyobo Co., Ltd. or the like can be used.
[0017]
The spring elastic release member is made of the same material as the main body or the case, the lid, and the hinge. The elastic elastic release member has a characteristic elasticity inherent in the plastic resin by being curved in an arc shape or a U shape or bent in a V shape. Use Of course, also in this example, the spring elastic release member, the main body, the case, and the lid side may be formed by two-color injection molding technology.
[0018]
Embodiment 1
The first embodiment is configured such that the lid is self-opened around the hinge when the lock is released by integrally molding the main body, the lid, the hinge, and the elastic release member using an injection mold. FIG. 1 to FIG. 3 specifically show the structure.
[0019]
Reference numeral 1 denotes a cap body attached to the mouth and neck portion 11 of the container 10, and the lid 2 is injection-molded integrally with the cap body 1 via two hinges 3, 3a. , 3a can be opened and closed freely. Reference numeral 4 denotes a stretchable opening member integrally formed between the cap body 1 and the lid 2 so as to be located between the hinges 3 and 3a. In the case of the first embodiment, the cap body 1 and the lid 2 and the hinge are provided. Reference numerals 3 and 3a are formed by a so-called two-color injection molding method using a polypropylene resin as a material, and a portion of the elastic release member 4 using the above-mentioned surlink as a material and an injection mold.
[0020]
Numeral 5 is a space provided between the hinges 3 and 3a and the elastic release member 4, and is provided to avoid interference of movement between the hinge sides 3 and 3a and the elastic release member 4. In FIGS. 1 to 3, P pushes the elastic release member 4 from the inside to the outside when the lid 2 is closed, so that a force is applied in a direction in which the lid 2 smoothly opens when contracted. For this reason, the protrusions protrude from the cap body 1 side. However, the projection P may be formed on the elastic release member 4 side. This projection P corresponds to claim 8.
[0021]
In the hinge cap, as shown in FIG. 2, when the lid 2 is closed, the elastic release member 4 is pushed outward at the tip of the projection P, and is pulled outward. Therefore, the contraction force is further increased. When the claw 6 is pushed down in the direction of the arrow a in FIG. 2, the lock of the lid 2 is released, and the contraction force of the elastic release member 4 causes the lid 2 to move around the hinges 3 and 3a as shown in FIG. Self-open at least 90 °. However, this opening angle is optional depending on the use of the container (cap).
Since the lid 2 of the first embodiment is integrally injection-molded with the main body 1, the hinges 3, 3 a, and the elastic release member 4, the production is simple and there is no trouble in assembling. Therefore, a self-opening hinge cap can be provided at low cost.
[0022]
Embodiment 2
The second embodiment corresponds to claims 3 to 8, as shown in FIGS. 4 to 6, between the hinges 3 and 3 a, and inside the cap body 1 and the lid 2 in an L-shape. A curved spring elastic release member 7 is integrally formed in the same manner as in the first embodiment. The spring elastic release member 7 may be a W-shaped bent spring elastic release member 8 as shown in FIG. One of the two ends of the spring elastic release members 7 and 8 may be free (the state shown in FIG. 5), or both ends may be connected to the cap body 1 and the lid 2 respectively. Good (state of FIG. 6).
[0023]
In the second embodiment, when the lid 2 is closed, the spring elastic release members 7 and 8 are deformed by pressure between the cap main body 1 and the lid 2. The lid 2 is fully opened as shown in FIGS. The shape of the spring elastic release members 7 and 8 is arbitrary as long as the shape allows the lid 2 to self-open. Further, as shown in FIGS. 5 and 6, a projection P may be formed between the spring elastic release members 7, 8 and the cap body 1 to assist the cap opening operation in the initial stage of opening. Correspondence).
[0024]
Embodiment 3
The third embodiment corresponds to claim 6 in which the spring elastic release member 9 is curved and projected in a U-shape outside the lid 2 between the hinges 3 and 3a. As shown in FIG. 7, the spring elastic release member 9 is composed of connecting bands 9a and 9b and a curved portion 9c, and a projection P is formed on the back of the connecting band 9b to keep a fulcrum outside. . In a state where the lid 2 is closed, the spring elastic release member 9 is forcibly bent, and when the claw 6 is released, as shown in FIG. Is fully opened. The shape of the U-shaped spring elastic release member 9 is not limited to the U-shape, but may be a V-shape or the like.
The third embodiment is suitable for a structure in which the lid 2 is opened to a large angle of 90 ° or more. The spring elastic opening member 9 has an advantage that no excessive force is applied when the lid 2 is closed.
[0025]
Embodiment 4
FIG. 9A shows that in the U-shaped or V-shaped spring elastic release member 9, the position of the curved portion or the bent portion 9 c is higher than the horizontal plane L including the rotation center 3 a of the hinge 3. (Corresponding to claim 7). In this case, as shown in (B), the tension applied to open the lid 2 is located from above the rotation center portion 3a of the hinge 3 to the outside, and the initial opening movement is smooth.
[0026]
Embodiment 5
FIGS. 10A and 10B correspond to claim 8 and describe in detail the configuration and operation of the protrusion P described in the first to third embodiments. (A) shows the state where the elastic release member 4 or the spring elastic release member 7 or 8 or 9 is pushed outward at the tip of the projection P, and (B) shows the initial state in which the lid 2 is unlocked and the lid 2 opens. It shows the function of the elastic release member 4 or the elastic elastic release member 7 or 8 or 9 at the stage, and the elastic elastic release member 4 or the elastic elastic release member pushed out by the action of the projection P during the rotation angle R. 7 or 8 or 9 pulls strongly in the direction to open the lid 2.
With this operation, the initial operation of opening the lid 2 can be performed smoothly.
The projection P may be formed inside the elastic release member 4 or the spring elastic release member 7 or 8 or 9. In FIGS. 10A and 10B, reference numerals 4, 8, and 9 are omitted.
[0027]
Embodiment 6
FIG. 11 corresponds to claim 8. Instead of the projection P, a spring plate 12 is formed inside the lid 2, a spring plate curved space 1 a is formed on the main body 1 side, and the lid 2 is closed. (A), the spring plate 12 is forcibly bent in the space 1a, and when the lock is released, the lid 2 is assisted in the initial operation by the action of restoring the spring plate 12, and thereafter, Are fully opened by the action of the spring elastic release member 9.
The spring plate 12 may be formed on the main body 1 side, and the shape of the spring plate 12 is arbitrary as long as it is a shape that assists the initial operation.
[0028]
In the first to sixth embodiments, the hinge is divided into 3 and 3a, but may be integrated (one piece). At this time, the elastic release member 4 or the spring elastic release member 7 or 8 or 9 It is integrally molded left and right with one hinge in between. In the first to sixth embodiments, the lid 2 is configured to be locked and released by the claw 6, but this locking means is optional.
[0029]
【The invention's effect】
As described above, the present invention has the advantage that the production of the cap body, the cap and the hinge, and the elastic release member or the spring elastic release member are integrally formed using the injection molding die, so that the production is simple and the assembly is not troublesome. In addition, a self-opening hinge cap with low manufacturing cost can be provided. Further, the present invention is not limited to container caps, but can be applied to various cases and the like, and can be applied to products molded by using an injection molding die. Range.
Further, according to the present invention, the initial opening operation of the lid can be performed smoothly by forming the projection or the spring plate between the cap body and the elastic opening member or the spring elastic opening member.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a hinge cap according to the present invention in which an elastic release member is integrally formed.
FIG. 2 is a side view of a hinge cap according to the present invention in which a stretchable release member is integrally formed.
FIG. 3 is an explanatory view of a hinge cap according to the present invention in a state where a lid is fully opened.
FIG. 4 is an explanatory view of a hinge cap according to the present invention in which a spring elastic release member is integrally formed.
FIG. 5 is an explanatory view of an L-shaped curved spring elastic release member.
FIG. 6 is an explanatory view of a spring elastic release member bent in a W shape.
FIG. 7 is an illustration of a U-shaped curved spring elastic release member.
FIG. 8 is an explanatory view of a state in which a lid is fully opened by a U-shaped curved spring elastic release member.
FIG. 9 is an explanatory diagram of a fourth embodiment.
FIG. 10 is an explanatory diagram of the fifth embodiment.
FIG. 11 is an explanatory diagram of the sixth embodiment.
FIG. 12 is an explanatory view of a self-opening cap using a conventional coil spring.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cap main body 2 Lid 3, 3a Hinge 4 Elastic opening member 5 Space part 6 Claws 7, 8, 9 Spring elastic opening member 10 Container 11 Neck and neck part 12 Spring plate

Claims (9)

The lid is integrally formed with the main body via a hinge, and the main body and the lid are connected at the hinge portion using a stretchable opening member. The shrinkage of the stretchable opening member causes the lid to open about the hinge. A self-opening hinge cap characterized in that: The self-opening hinge cap according to claim 1, wherein the main body, the hinge, the lid, and the elastic opening member are integrally formed using an injection mold. A lid is integrally formed on the main body via a hinge, and a spring elastic release member is incorporated inside the lid at the hinge portion.When the lid is closed, the spring elastic release member is pressed between the lid and the main body. A self-opening hinge cap, wherein when the cover is contracted and the lid is unlocked, the lid self-opens around the hinge by the action of the spring elastic release member. The self-opening hinge cap according to claim 3, wherein the main body, the lid, the hinge and the spring elastic release member are integrally formed using an injection mold. A self-opening type wherein the elastic release member or the spring elastic release member according to any one of claims 1 to 3 is formed between left and right hinges or on both sides with one hinge as a center. Hinge cap. The self-opening hinge cap according to claim 3, wherein the spring elastic release member protrudes outside the main body and the lid in a curved or bent state. 7. The self-opening hinge cap according to claim 6, wherein the curved or bent portion of the spring elastic member is located above a horizontal plane passing through the rotation center of the hinge. In Claims 1 to 7, between the cap body and the elastic release member or the spring elastic release member, there is provided a projection or a spring plate that pushes the gap between the elastic release member or the spring elastic release member to the outside and changes the fulcrum. A self-opening hinge cap configured to assist in a direction in which the lid is opened in an initial operation when the lid is opened. 9. The self-opening hinge cap according to claim 8, wherein the projection or the spring plate is formed on the cap body side or the elastic release member or the spring elastic release member side.

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