JP4135168B2 - Container hinge structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinge structure of a container in which a container main body and a lid are coupled so as to be capable of opening and closing, and particularly relates to a hinge structure that prevents a shearing force from being applied to a hinge shaft.
[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 is hingedly connected to the container body so that the lid can be opened and closed.
[0003]
When the lid of the cosmetic compact container is rotated with respect to the container body with the hinge shaft as the rotation axis, the lid abuts against the rear end of the container body, and this position is the position of the lid body relative to the container body. The rotation limit is reached, and the rotation of the lid relative to the container body is stopped.
[0004]
When an external force is applied to the lid body in the opening direction at the limit of rotation of the lid body with respect to the container body, the portion where the external force is applied becomes the power point, and the lid body portion that hits the rear end of the container body serves as the fulcrum. Due to the lever action, a strong force acts as a shearing force on the hinge shaft that joins the container body and the lid, which is the point of action, and the hinge shaft may be destroyed.
[0005]
For this reason, conventionally, a metal hinge shaft having high rigidity and strength has been used for a cosmetic compact container.
[0006]
On the other hand, in recent years, taking into consideration the impact on the environment, effective use of resources, etc., there has been an increasing demand for separating and collecting synthetic resin members and metal members. In order to avoid this problem, there is also known one using a hinge shaft made of a synthetic resin, such as a conventional cosmetic compact container described in JP-A-11-290118.
[0007]
[Problems to be solved by the invention]
However, when a hinge pin made of synthetic resin is used, there are advantages such as that the container can be reduced in weight, that it is not necessary to separate and collect because it is the same material as the container body and the lid, and that the manufacturing cost is low. On the other hand, since it is inferior in rigidity and strength compared to a metal hinge shaft, there is a problem that the hinge shaft may be easily broken because it cannot withstand the shearing force applied to the hinge shaft. .
[0008]
Therefore, the present invention was devised to solve the above-described problems in the prior art, and in a hinge structure using a synthetic resin hinge shaft of a container used for a cosmetic container or the like, the external force is a hinge as a shearing force. An object of the present invention is to prevent the hinge shaft from acting on the shaft, thereby preventing the hinge shaft from being broken by a shearing force and improving the durability and safety of the container.
[0009]
[Means for Solving the Problems]
Among the present invention for solving the above-mentioned problems, the means of the invention according to claim 1 is:
A hinge shaft is inserted through a shaft hole drilled in a hinge piece provided at the rear end portion of the container main body formed with the storage portion, and a shaft hole drilled in a hinge piece provided at the rear end portion of the lid body. A hinge structure of the container that joins the main body and the lid so as to be freely openable and closable;
A downward step was provided at the rear end of the container body other than the part provided with the hinge piece,
Engagement with the rear end of the hinge piece facing the rear end of the container main body provided with the stepped portion, which hits the step provided on the rear end of the container main body from below by the rotation of the lid relative to the container main body. Providing a step,
A locking piece projecting from the end face of the hinge piece of the lid that touches the hinge piece of the container body;
On the end face of the hinge piece of the container body facing this locking piece, there is provided an abutting portion where the locking piece protruding from the end face of the hinge piece of the container body hits from the upper side by the rotation of the lid with respect to the container body. Projecting the locking part,
It is in.
[0010]
When the lid is rotated with respect to the container body using the hinge shaft as a rotation axis, the hinge piece of the lid is placed on the front side of the hinge shaft on the downward step protruding from the container body. The latching step provided at the rear end of the lid abuts from below, and on the rear side of the hinge shaft, on the abutment of the latching part projecting on the hinge piece of the container body, the hinge piece of the lid The protruding locking piece hits from above, the rotation of the lid with respect to the container body stops, and the two abutting positions where the hinge shaft is located are the limit of rotation of the lid with respect to the container body.
[0011]
Even if the lever action that the external force in the opening direction is applied to one of the container main body or the lid body, the portion where the external force is applied is the power point, and both the abutting positions serve as fulcrums at the limit of rotation of the lid body relative to the container body, Since the hinge shaft is located between the two butting positions as the fulcrum, it cannot serve as an action point, and therefore no shear force is applied to the hinge shaft.
[0012]
The invention according to claim 2 is the configuration of the invention according to claim 1, wherein the engaging portion is provided with a circumferential portion that is in sliding contact with the engaging piece in the rotation range of the container body and the lid. It is added.
[0013]
When the lid is rotated with respect to the container body, the locking piece slides along the circumferential portion of the locking portion. During this rotating operation, the locking piece is locked to the locking body. Even if an external force is applied to the circumferential portion of the lid, the external force applied to the lid is received by the circumferential portion of the latching portion via the latching piece, and this external force acts as a shearing force on the hinge shaft. There is nothing.
[0014]
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 the open state of the cosmetic compact container 1, and FIG. 2 is an exploded perspective view seen from the rear end portion showing the closed state of the container 1.
[0015]
FIG. 1 shows an example of a synthetic resin compact container 1 made of synthetic resin. The container 1 is composed of a container main body 5, a lid body 8, and a hinge shaft 9. A hinge piece 3 having a shaft hole 4 projecting from the central portion of the rear end is provided, and a mirror body 17 is attached to the inner surface of the lid body 8, and both ends of the rear end are provided. Two hinge pieces 7 each formed with a shaft hole 6 project from the portion, and the container 1 is a combination of the hinge piece 3 of the container body 5 and the hinge piece 7 of the lid body 8. A hinge shaft 9 is inserted into the shaft hole 6, and the container body 5 and the lid body 8 are hinge-coupled so as to be freely opened and closed.
[0016]
A concave portion 14 is provided at the center of the front end of the container body 5, and a locking projection 15 projects from the concave portion 14. A locking projection 16 hangs down at the center of the front end of the lid 8. The locking projection 15 and the locking projection 16 are engaged with each other, and the closure of the container 1 is maintained.
[0017]
Next, details of the hinge structure of the container 1 will be described with reference to the drawings.
FIG. 3 is a partial cross-sectional view showing a state where the container body 5 and the lid body 8 are closed. FIG. 4 shows a partial longitudinal section XX view of FIG.
[0018]
As shown in FIGS. 3 and 4, the rear end portion 5a of the container body 5 other than the portion where the hinge piece 3 is provided projects a downward stepped portion 12 in a tapered cross section from the rear end portion of the container body 5. And a hinged step 13 that faces the rear end portion 5a of the container body 5 on which the step portion 12 is formed. At the rear end of the piece 7, the upper side is provided so as to protrude smoothly in a tapered shape.
[0019]
On the end face of the hinge piece 7 facing the end face of the hinge piece 3, a sector-shaped locking piece 10 having a central angle of about 90 ° centering on the shaft hole 6 is projected. A horizontal end surface located obliquely below the front side of the hole 6, located on the front side of the shaft hole 6 and at the same height as the center of the shaft hole 6 is a stepped portion 10 b, and the sector-shaped inner arc surface is an inner arc. A vertical end face located on the lower side of the shaft hole 6 is a step portion 10a.
[0020]
On the end face of the hinge piece 3 facing the locking piece 10, a short cylindrical piece projecting around the shaft hole 4 and having an outer diameter that is twice the radius of curvature of the inner arc portion 10c, and the short cylindrical piece And a locking piece 11 is formed by projecting a fan-shaped piece having a central angle of about 90 ° around the shaft hole 4 at a position obliquely below the rear of the shaft hole 4. The horizontal end surface of the fan-shaped piece located on the side and at the same height as the center of the shaft hole 4 is a contact portion 11a, the outer peripheral surface of the short cylindrical piece is a circumferential portion 11b, and the bottom of the shaft hole 4 A vertical end face of the sector piece located on the side is a step portion 11c.
[0021]
The locking portion 11 includes an upright piece standing up from the rear end of the abutting portion 11a and connected to the end face of the hinge piece 3, and the upright piece and the sector form a blindfold 11d. The appearance of the back surface of this is made to be the same as that of a normal compact container, and the appearance of the complicated combination structure of the locking piece 10 and the locking portion 11 is exposed, thereby preventing the appearance from being deteriorated.
[0022]
Next, functions of the locking piece 10, the locking portion 11, the stepped portion 12, and the locking stepped portion 13 when the lid body 8 is rotated with respect to the container body 5 will be described. 5A shows a state in which the lid body 8 is closed with respect to the container body 5, and FIG. 5B shows a state in which the lid body 8 is rotated with respect to the container body 5 in a rotation range. FIG. 5C is a partial longitudinal sectional view showing a state in which the lid body 8 is located at the rotational limit with respect to the container body 5.
[0023]
As shown in FIG. 5 (a), when the lid body 8 is closed with respect to the container body 5, the stepped portion 10 a of the locking piece 10 is positioned below the hinge shaft 9 and the stepped portion of the locking portion 11. It is in a state of hitting the portion 11c from the circumferential direction.
[0024]
In this state, only an upward external force acting on the lid body 8 can apply a shearing force to the hinge shaft 9, but this upward external force is applied to the inner arc portion 10 c of the locking piece 10. Since it is received by contact with the circumferential portion 11b of the locking portion 11, it cannot act on the hinge shaft 9 as a shearing force.
[0025]
Next, as shown in FIG. 5 (b), when the lid body 8 is rotated with respect to the container body 5 with the hinge shaft 9 as the rotation axis, the locking piece is engaged with the circumferential portion 11 b of the locking portion 11. The inner circular arc part 10c of 10 slides, and the locking piece 10 moves on the circumferential part 11b.
[0026]
In this state, there is almost no shearing force acting on the hinge shaft 9 due to the external force. However, even if an external force that generates a shearing force is applied, this external force acts from the direction of the arrow A, that is, the locking piece. 10 acts in the direction of pressing the hinge shaft 9 side, it is received by the contact between the inner arc portion 10c of the locking piece 10 and the circumferential portion 11b of the locking portion 11, and a shearing force is applied to the hinge shaft 9. Does not work.
[0027]
Then, as shown in FIG. 5 (c), when the lid body 8 is rotated about 180 ° with respect to the container body 5 with the hinge shaft 9 as the rotation axis, the front end of the hinge shaft 9 is engaged with the step portion 12. While the stop portion 13 abuts from below, the step portion 10b of the engagement piece 10 abuts the contact portion 11a of the engagement portion 11 on the rear side of the hinge shaft 9 from above, and the lid body 8 against the container body 5 The two stop positions where the rotation stops and the hinge shaft 9 is located between them are the rotation limit of the lid body 8 relative to the container body 5.
[0028]
Even if a lever action occurs with an external force applied in the opening direction to the lid 8 located at the rotation limit, the portion where the external force is applied as a force point, and the both-end contact position as a fulcrum, it is located between the fulcrums. The hinge shaft 9 does not serve as a point of action, so that no shear force is applied to the hinge shaft 9.
[0029]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the invention according to claim 1, since the container body and the cover body are abutted at two positions with the hinge shaft positioned between them in the limit of rotation of the cover body with respect to the container body, the cover body is opened in the opening direction. The external force to be rotated completely prevents the shearing force from being applied to the hinge shaft, thereby preventing the hinge shaft from being broken and improving the durability and safety of the container.
[0030]
In the second aspect of the invention, when the lid is rotated with respect to the container body, the locking piece is in sliding contact with the circumferential portion of the locking portion. Even if an external force pressing toward the shaft is applied, this external force can be prevented from acting as a shearing force on the hinge shaft because the locking portion receives the locking piece at the circumferential portion thereof. As a result, it is possible to prevent the hinge shaft from being sheared and broken during the opening / closing operation of the lid.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a compact container showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the embodiment shown in FIG. 1 as viewed from the rear end.
FIG. 3 is an enlarged plan sectional view of the hinge coupling portion of the embodiment shown in FIG. 1;
4 is an enlarged vertical cross-sectional view of a hinge coupling portion as viewed in the direction of arrows XX in FIG.
5 is a sectional view for explaining the operation of the embodiment shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; Compact container 2; Storage part 3; Hinge piece 4; Shaft hole 5; Container body 6; Shaft hole 7; Hinge piece 8; Lid body 9; Inner circular arc part 11; Locking part 11a; Abutting part 11b; Circumferential part 11c; Step part 11d; Blind part 12; Step part 13; Locking step part 14; Projection 17; Mirror A; Arrow

Claims (2)

A shaft hole (4) drilled in the hinge piece (3) provided at the rear end of the container body (5) forming the storage part (2), and a hinge piece provided at the rear end of the lid (8) The hinge shaft (9) is inserted into the shaft hole (6) drilled in (7), and the hinge of the container (1) is connected to the container body (5) and the lid body (8) so as to be freely opened and closed. It is a structure, A downward step part (12) is provided in the rear end part (5a) other than the part which provided the said hinge piece (3), and a downward step part (12) is provided in the said rear end part (5a). At the rear end portion of the opposing hinge piece (7), a locking step portion (13) that abuts from below on the step portion (12) by the rotation of the lid body (8) relative to the container body (5) is provided, A locking piece (10) projects from the end face of the hinge piece (7) of the lid (8) in contact with the hinge piece (3), and the hinge of the container body (5) facing the locking piece (10) A locking part (11) provided with an abutting part (11a) against which the locking piece (10) abuts from above by rotation of the lid (8) with respect to the container body (5) on the end surface of the piece (3) The hinge structure of the container protruding. The container according to claim 1, wherein the locking portion (11) is provided with a circumferential portion (11b) that is in sliding contact with the locking piece (10) in the range of rotation of the container body (5) and the lid (8). Hinge structure.

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