JPH072434Y2 - Locking structure between the case and lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a locking structure between a housing and a lid that are hinged together, and in particular, the lid does not separate from the housing even if the hinge is broken. The present invention relates to a locking structure.

[Prior Art] A case in which a housing and a lid are joined by a hinge is used in a wide field because it can be integrally molded in a plastic injection molded product.

FIG. 5 shows a fuse box and its lid used for wiring in a car as a conventional example in which a housing and a lid are joined together by a hinge. In the figure, 1 is a fuse box as a housing, and 2 is its lid. A large number of fusible links 3 are accommodated in the housing 1 in a state of being electrically connected. Reference numeral 4 indicates a fuse box terminal projecting from the housing 1. The casing 1 has an extended portion 1b formed on one of the side walls 1a standing upright on four sides, and is integrally connected to the lid body 2 by a hinge 5 provided at the tip of the extended portion 1b. The lid 2 has the same shape as the housing, but has no side wall corresponding to the extending portion 1b, and the extending portion 1b is used instead. A bulging portion 2a is formed on the side of the lid 2 on the side of the opening of the side wall, and contacts the rib 1c formed on the housing 1 to determine the locking position. In addition, a locking arm-shaped locking portion 6 is provided on the side wall of the lid 2 opposite to the hinge 5.
Is provided, and the side wall of the housing 1 has a locking portion 7 that engages with the locking portion 6.

As shown in FIG. 6, when the lid body 2 is rotated from the open position indicated by the chain double-dashed line to the closed position indicated by the solid line in the direction of arrow A, the bulging portion 2a comes into contact with the rib 1c and the locking position is determined. , Locking part 6
And 7 are engaged and fixed in the closed state. When opening the lid body 2, a rightward force in the drawing is applied to the locking portion 6 to release the engagement with the locking portion 7, and the lid body 2 is rotated in the direction opposite to the arrow A to open.

[Problems to be solved by the device]

However, in the above-mentioned conventional technique, since the hinge 5 is thin, it may be damaged due to the influence of fatigue and the like, and when it is damaged, the hinge 5 side of the lid body 2 is lifted as shown in FIG. Water and dust easily get into. In addition, the lid 2 and the housing 1 may collide with each other due to vibrations during traveling of the automobile, which may cause abnormal noise.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a locking structure in which the lid does not lift from the housing even if the hinge is damaged.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a lock between a housing and a lid, the housing and the lid being joined by a hinge, and a locking portion provided on the opposite side of the hinge to engage with each other. In the structure, a locking auxiliary portion is formed on the hinge portion side of the housing so as to be separated from the hinge, and a locking auxiliary portion that engages with the locking auxiliary portion is formed on the lid body to close the lid. At this time, both of the locking auxiliary portions are engaged with each other to prevent the lid body and the housing from being separated from each other.

[Action]

The lid is rotated about the hinge to cover the housing, and both locking portions located on the opposite side of the hinge are engaged. At the same time, the locking assisting part provided on the lid engages with the locking assisting part provided on the hinge side of the housing. Even if the hinge is broken, the hinge side does not float up due to the engagement of the locking assisting portion.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. First
In the embodiment shown in FIG. 3 to FIG. 3, the general structure of the lid and the housing is the same as that shown in the conventional example.

In the embodiment shown in FIG. 1, a notch 8 is formed in the vicinity of the tip of the side wall of the lid 2 on the hinge portion 5 side, and an engaging portion 9 is provided on the hinge 5 side of the housing 1 away from the hinge 5. To project.

As shown in FIG. 2, when the lid body 2 is rotated from the position indicated by the chain double-dashed line in the direction of arrow A to cover the housing 1, the lid body 2 is formed as shown in FIGS. 2 and 3. The locking auxiliary portion 2b, which is the tip portion of the bulged portion 2a, enters below the locking auxiliary portion 9 formed on the lid. At this time, the locking assisting portions 9 and 2b are in close contact with each other and prevent the housing 1 from being separated from the lid body 2 even if the hinge 5 is damaged. The conventional locking portions 6 and 7 are engaged with the side opposite to the hinge 5, which also prevents the housing 1 and the lid body 2 from being separated from each other.

FIG. 4 shows another embodiment. In this embodiment, there is no portion corresponding to the extended portion 1b of FIG. 1, and the position of the hinge 5 is provided below that of the embodiment of FIG. For this reason, the locking assisting portion 9 is provided below the hinge at a distance from each other, and the lid 2 has a hook-shaped locking assisting portion that can be engaged with the locking assisting portion 9.
10 is projected downward. When the lid 2 is opened or closed, the locking assisting portion 10 moves in the direction of arrow B, and the locking assisting portion 9
Can be engaged and disengaged. When the hinge 5 is broken, the locking auxiliary portion 9 is engaged with the locking auxiliary portion 9, so that the lid body 2 is not separated from the housing 1.

In the present invention, it is desirable that the locking assist portion is formed as far as possible from the hinge, and that the locking auxiliary portion is engaged immediately below the hinge. When the lid 2 is opened or closed, the auxiliary locking portion 2b or 10
Moves in an arcuate path centered on the hinge, but if both locking auxiliary parts are engaged in the vicinity of directly under the hinge, the engaging surface of the locking auxiliary part becomes parallel to the rib 1c. Cover 2
This is because it is possible to effectively suppress the separation of the above, and it is possible to form the engagement surface large by providing the locking auxiliary portion away from the hinge.

[Effect of device]

As described above, according to the present invention, a locking auxiliary portion is formed on the hinge portion side of the housing so as to be separated from the hinge, and the lid auxiliary member engages with the locking auxiliary portion. The lid is lifted from the housing even if the hinge is damaged, because a part is formed and both of the locking assisting portions are engaged with each other when the lid is closed to suppress the separation between the lid and the housing. Can be effectively prevented. Therefore, it is possible to prevent moisture and dust from entering the housing.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a housing and a lid locking structure showing an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an AA of FIG. Sectional view (closed state), FIG. 4 is a view of another embodiment, (a) is a front view, (b) is a right side view of (a), and FIG. 5 is a perspective view of a conventional example. 6 is a front view of FIG. 5, and FIG. 7 is a front view of FIG. 5 showing a state where the hinge is broken. 1 ... Casing, 2 ... Lid, 5 ... Hinge, 6,7 ... Locking part, 9,2b, 10 ... Locking assisting part.

Claims (1)

[Scope of utility model registration request] 1. A locking structure between a housing and a lid, wherein the housing and the lid are joined by a hinge, and a locking portion for engaging with each other on the opposite side of the hinge is provided. A locking auxiliary portion is formed on the hinge portion side apart from the hinge, and a locking auxiliary portion that engages with the locking auxiliary portion is formed on the lid body to lock both of them when the lid is closed. A locking structure between a housing and a lid, wherein an auxiliary portion is engaged to suppress separation of the lid and the housing.