JP4061402B2 - Container hinge structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge structure for a container in which a container body and a lid are connected to each other so as to be freely opened and closed. In particular, the hinge shaft that is connected across the container body and the cover is structurally reinforced and locally added. The present invention relates to a hinge structure of a container that prevents the hinge shaft from being broken by a shearing force.
[0002]
[Prior art]
As a cosmetic compact container, a combination of a hinge piece provided with a shaft hole provided at the rear end of the container body and a hinge piece provided with a shaft hole provided similarly at the rear end of the lid body, 2. Description of the Related Art A hinge shaft is inserted through a hole, and a lid body is connected to the container body so as to be freely opened and closed.
[0003]
The cosmetic compact container has a part where the external force is applied when the external force is applied to the container body or the cover body in the limit of rotation of the cover body with respect to the container body. The hinge shaft acts as a point of action against the force point, and the hinge shaft spans the shaft hole drilled in the hinge piece of the container body and the shaft hole drilled in the hinge piece of the lid. Large shear force works. For this reason, conventionally, a metal shaft having high mechanical strength has been used as a hinge shaft for connecting the container body and the lid.
[0004]
On the other hand, in recent years, considering the advantages such as avoiding the trouble of separating and collecting the container body, the lid, and the hinge shaft as the same material, reducing the weight of the container, and reducing the manufacturing cost. Therefore, there is a demand for a material replacement from a metal to a synthetic resin hinge shaft.
[0005]
[Problems to be solved by the invention]
However, the hinge shaft made of synthetic resin, since the mechanical strength is low, simply replacing the hinge axis of the metal, there is a problem that practical strength is insufficient, the strength of the entire hinge structure Is a challenge.
[0006]
Therefore, the present invention was devised to solve the problems in the prior art described above, and it is a technical problem to structurally reinforce the hinge shaft that is coupled across the container body and the lid. An object of the present invention is to prevent the hinge shaft from being broken by a local shearing force and to enhance the durability and safety of the container.
[0007]
[Means for Solving the Problems]
To solve the above problem,
According to a first aspect of the present invention, a synthetic resin hinge shaft is inserted through a hinge piece provided at the rear end portion of the container body having a storage portion and a hinge piece provided at the rear end portion of the lid. A container hinge structure that connects the container body and the lid so as to be freely openable and closable;
The hinge shaft is composed of a small-diameter cylindrical portion and a large-diameter cylindrical portion that is continuously provided from the small-diameter cylindrical portion via an enlarged stepped portion,
The hinge piece on the side where the hinge shaft is inserted has a large-diameter shaft hole through which the large-diameter cylindrical portion of the hinge shaft can be inserted,
Fitting the small diameter cylindrical part of the hinge shaft into the hinge piece facing the large diameter shaft hole through the insertion hole portion having the same diameter as the large diameter shaft hole and the reduced diameter step portion from the insertion hole portion. A shaft hole having a fitting hole portion to be drilled is provided.
[0008]
In the invention according to claim 1, the hinge shaft is inserted into the hinge piece of the container body or the hinge piece of the lid, and the shaft is formed in the hinge piece facing the large diameter shaft hole. The small-diameter cylindrical portion of the hinge shaft is fitted in the fitting hole portion of the hole so as not to be pulled out, and the hinge piece of the container body and the hinge piece of the lid are connected.
[0009]
That is, the large-diameter cylindrical portion of the hinge shaft is connected across the large-diameter shaft hole of one hinge piece and the insertion hole portion of the other hinge piece, and the hinge shaft to which the largest shearing force is locally applied The part is thickened and structurally reinforced to prevent the hinge shaft from being broken even when the shearing force due to the lever action acts on the hinge shaft. In addition, the hinge piece portion that fits and fixes the hinge shaft so that it cannot be pulled out is a portion in which a small-diameter fitting hole portion is formed, so that the large-diameter shaft as in the portion in which the large-diameter large-diameter shaft hole is formed. There is no need to prevent a decrease in strength by giving an appropriate thickness between the hole and the rear end of the hinge piece, and the mechanical strength equivalent to that of the conventional case using a metal hinge shaft is achieved. maintain.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing an open state of the cosmetic compact container 1, and FIG. 2 is a cross-sectional view of the container 1.
[0011]
The container 1 includes a container body 2, a lid body 5, and a pair of hinge shafts 8. In general, the container body 2 and the lid 5 use polypropylene, AS, ABS, or the like as a molding material, and the hinge shaft 8 uses nylon or the like as a molding material.
[0012]
The square dish-shaped container body 2 provided with a storage portion 11 for storing cosmetics is provided with a pair of hinge pieces 3 protruding rearward on both sides of the rear end, and with a locking recess 9 in the center of the front end. .
[0013]
The lid body 5 to which the mirror body 12 is attached has one hinge piece 6 suspended from the central portion of the rear end, and a latching convex portion 10 that latches to the latching concave portion 9 at the center portion of the front end. . The closure of the container body 2 and the lid 5 is held by the locking of the locking recess 9 and the locking projection 10.
[0014]
The hinge shaft 8 includes a small-diameter cylindrical portion 8b and a large-diameter cylindrical portion 8a that extends from the small-diameter cylindrical portion 8b through an enlarged stepped portion 8c.
[0015]
When the container body 2 and the lid 5 are assembled, the hinge piece 3 on the side through which the hinge shaft 8 is inserted has a large diameter shaft hole 4 through which the large diameter cylindrical portion 8a can be inserted. . On the other hand, the hinge piece 7 facing the hinge piece 3 having the large diameter shaft hole 4 is provided with an insertion hole portion 7a having the same diameter as the large diameter shaft hole 4 and a reduced diameter step portion 7c from the insertion hole portion 7a. A shaft hole 7 including a fitting hole portion 7b for fitting the small-diameter cylindrical portion 8b through the small diameter cylindrical portion 8b is formed.
[0016]
When the hinge shaft 8 is inserted into the large-diameter shaft hole 4 of the hinge piece 3, the small-diameter cylindrical portion 8b is fitted in the fitting hole portion 7b of the shaft hole 7 of the hinge piece 6 so that it cannot be pulled out, and the large-diameter cylindrical portion 8a. However, the container main body 2 and the lid 5 are connected across the insertion hole 7 a and the large-diameter shaft hole 4. The hinge shaft 8, the large-diameter shaft hole 4 and the insertion hole portion 7a have an appropriate resistance and set an appropriate sliding resistance so that the lid 5 rotates relative to the container body 2. is doing.
[0017]
FIG. 3 is a vertical cross-sectional view taken along the line XX in FIG. 2, showing a state of an open rotation limit in which the hinge piece 7 is in contact with the rear end portion of the container body 2.
[0018]
As shown in FIG. 3, when any force (arrow F in FIG. 3) is applied to the container body 2 or the lid 5 in the open rotation limit where the hinge piece 7 hits the rear end of the container body 2, The point where the part is added becomes a power point, and the hinge point 7 (point A in FIG. 3) where the hinge piece 7 abuts the rear end of the container body 2 serves as a fulcrum, and the hinge that joins the container body 2 and the lid 5 The shaft 8 serves as a point of action, and this force acts on the hinge shaft 8 (arrow B in the figure).
[0019]
The force due to the lever action with the point where the hinge piece 7 abuts the rear end of the container body 2 as a fulcrum is locally applied particularly to the hinge shaft 8 connected across the hinge piece 3 and the hinge piece 6. Although the hinge shaft 8 is structurally reinforced by thickening the portion spanning the hinge piece 3 and the hinge piece 6 as a large-diameter cylindrical portion 8a, the hinge shaft 8 is broken. do not do.
[0020]
FIG. 4 is an exploded perspective view of the container 1 showing another embodiment of the present invention. The container body 2 is provided with one hinge piece 3 projecting rearward at the center of the rear end. On the other hand, the lid 5 is provided with a pair of hinge pieces 6 at both ends of the rear end. The hinge piece 3 on the side where the hinge shaft 8 is inserted is provided with a large-diameter shaft hole 4, and the hinge piece 3 facing the large-diameter shaft hole 4 is provided with a fitting hole portion 7a and the fitting hole portion 7a. A shaft hole 7 having a fitting hole portion 7b for fitting the small diameter cylindrical portion 8b through the reduced diameter step portion 7c so as not to be pulled out is formed.
[0021]
Then, the hinge shaft 8 is inserted from the large-diameter shaft hole 4 drilled in the pair of hinge pieces 6 of the lid 5, and the insertion hole portion 7 a of the hinge piece 3 is inserted, so that the small-diameter cylindrical portion 8 b of the hinge shaft 8 is inserted. Is fitted into the fitting hole 7b so as not to be pulled out, and the container body 2 and the lid 5 are connected. In this way, by combining the hinge piece 3 of the container body 2 and the hinge piece 6 of the lid body 5, the large-diameter shaft hole 4 is formed in the hinge piece on the side where the hinge shaft 8 is inserted, and the large-diameter shaft The hinge piece facing the hole 4 may be provided with a shaft hole having the fitting hole portion 7a and the fitting hole portion 7b.
[0022]
Even when the large-diameter shaft hole 4 is formed in the hinge piece 3 of the container body 2 or the hinge piece 6 of the lid body 5, the large-diameter shaft is used so that the strength of the container body 2 or lid body 5 does not decrease. An appropriate thickness is provided between the hole 4 and the rear end portion of the hinge piece 3 or the hinge piece 6.
[0023]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the present invention, in the open rotation limit, some force is applied to the container body or the lid, the portion where the hinge piece of the lid abuts against the rear end of the container body serves as a fulcrum, and the hinge shaft acts as an action point by lever action. Even if a large shearing force is applied locally to the hinge shaft spanning the hinge piece of the container body and the hinge piece of the lid, the hinge shaft is connected across the hinge piece and the hinge piece. Since the hinge shaft is structurally reinforced by making this portion thick as a large diameter cylindrical portion, the hinge shaft can be prevented from being broken, and the durability and safety of the container can be improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a container showing an embodiment of the present invention.
2 is a cross-sectional view of a hinge structure portion of the container of FIG. 1;
FIG. 3 is a longitudinal cross-sectional view of the container shown in FIG.
FIG. 4 is an exploded perspective view of a container showing another embodiment of the present invention.
[Explanation of symbols]
1; Container 2; Container body 3; Hinge piece 4; Large diameter shaft hole 5; Lid 6; Hinge piece 7; Shaft hole 7a; Insert hole portion 7b; Fit hole portion 7c; 8a; large-diameter cylindrical portion 8b; small-diameter cylindrical portion 8c; enlarged diameter step portion 9; locking concave portion 10; locking convex portion 11; storage portion 12;

Claims (1)

The hinge piece (3) provided at the rear end of the container body (2) having the storage portion (11) and the hinge piece (6) provided at the rear end of the lid (5) are made of synthetic resin. The hinge structure of the container (1) is inserted through the hinge shaft, and the container body (2) and the lid (5) are connected to be freely opened and closed, and the hinge shaft (8) is connected to the small-diameter cylindrical portion (8b). ) And a large-diameter cylindrical portion (8a) continuously provided from the small-diameter cylindrical portion (8b) via an enlarged-diameter step portion (8c), and the hinge piece on the side into which the hinge shaft (8) is inserted. A large-diameter shaft hole (4) into which the large-diameter cylindrical portion (8a) can be inserted is drilled, and a hinge piece facing the large-diameter shaft hole (4) is the same as the large-diameter shaft hole (4). And a fitting hole portion (7b) for fitting the small diameter cylindrical portion (8b) through the fitting hole portion (7a) through the reduced diameter step portion (7c) so as not to be pulled out. A hinge structure for a container having a shaft hole (7) having

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