JPH06100220B2 - Single-piece hinge for synthetic resin products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a hinge portion of an integrally structured product made of a synthetic resin material.

[Conventional technology]

FIGS. 6 and 7 show a protector b of an automobile wire harness a, in which a cover e is integrally connected via a hinge f to a gutter-shaped body portion d having a mounting clip c for a vehicle body or the like. The wire harness a is accommodated in the main body portion d, the cover e is closed, and the locking piece g is engaged with the locking portion h.

In this case, since the length of the hinge f is improper, the radius of curvature when the hinge f is bent is partly increased (FIG. 8), and the hinge is easily broken.

[Problems to be Solved by the Invention]

The present invention has been made paying attention to the above points, and is intended to prevent damage to such a synthetic resin hinge portion.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a synthetic resin hinge is provided integrally between the end faces of the two members, and the planes of the end portions of the two members are abutted in a substantially orthogonal state,
The distance from the intersection origin O of the two members to both ends P and Q of the hinge on the end face is substantially the same, and the hinges have substantially the same radius of curvature.

[Action]

In a state where the planes of the ends of the two members are abutted in a substantially orthogonal state, the distances from the intersection origin O of the two members to both ends P and Q of the hinge on the end face are substantially the same, and the hinges are substantially the same. Since they have the same radius of curvature, stress is not concentrated on a part of the hinge.

〔Example〕

In FIG. 1, A is a synthetic resin protector main body of an automobile wire harness, and B is a synthetic resin cover. In the cover B, a vertical plate portion 2 is integrally connected to a horizontal plate portion 1 by a hinge 3.

The horizontal flat plate portion 1 and the vertical plate portion 2 are provided with locking pieces 4, and by engaging the locking pieces 4 with locking projections 5 provided at corresponding positions of the protector body 1, the protector body A is covered. B is bound (Fig. 2).

In the connected state, the horizontal plate portion 1 and the vertical plate portion 2 are arranged in a substantially orthogonal state, and both plane portions of both ends 1a and 2a abut each other in the orthogonal state. The thin vertical plate portion 2 is provided with a right-angled bent portion 2b, and the hinge 3 is integrally connected from the right-angled bent plate 2b to the end surface 1b of the thick horizontal plate portion 1 (first). (Fig. 3).

In this case, the distances PO and QO from both ends P and Q of the hinge 3 to the origin of intersection O are equalized, and the radius of curvature R of the hinge 3 is R.
Is configured to be substantially constant.

In FIG. 4, the vertical plate portion 2'is thick so that the right-angled bent plate portion 2b is omitted. In FIG. 5, the horizontal plate portion 1'is thin. As a result, the right-angled bent plate portions 1c are continuously provided.

〔The invention's effect〕

As described above, according to the present invention, the hinge made of synthetic resin is integrally provided between the end surfaces of the two members, and the planes of the end portions of the two members are abutted to each other in a substantially orthogonal state. O
To the both ends P and Q of the hinge on the end face are substantially the same, and since the hinges have substantially the same radius of curvature, there is no need to provide an engaging structure between the ends of the two members. It is possible to prevent the synthetic resin hinge portion from being damaged by a simple structure in which the ends are made to collide with each other in an orthogonal state.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of the same as above in an assembled state, FIG. 3 is an enlarged front view of essential parts, and FIGS. FIG. 6 is an enlarged front view of a main part of the embodiment, FIG. 6 is a front view of a conventional example, FIG. 7 is a perspective view of the same use state as above, and FIG. 8 is an enlarged front view of the main part of the same. 1, 2 ... Two members (horizontal plate part, vertical plate part) arranged in a crossed state, 3 ... Hinge.

Claims (1)

[Claims] 1. A synthetic resin hinge is integrally provided between the end faces of two members, and in a state where the planes of the end portions of the two members are abutted to each other in a substantially orthogonal state, the cross origin O of the two members is removed. The distance to both ends P and Q of the hinge on the end face is almost the same,
A hinge having an integral structure in a synthetic resin product, wherein the hinges have substantially the same radius of curvature.