JPH058741Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is for locking both members in an assembled state when a member having a hinge is rotated about the hinge and superimposed on a mating member. This invention relates to an improvement in the structure of the lock portions provided on both members.

[Conventional technology and problems]

As shown in FIG. 5, a wire harness protector that accommodates and protects a wire harness W consisting of a plurality of electric wires has a U-shaped cross section, and has a protector main body 1, which is a fixed member, and one end. The lid 3 is a rotating member that is superimposed on the protector main body 1 with the provided thin flexible hinge 2 as a pivot point, and the lid 3 has an approximately A lock arm 4 is provided upright on the right-angled side edge.

The lock arm 4 is flexible and has a protrusion 5 on the outer surface of its tip.

The protrusion 5 has a tapered portion 6 that widens outward from the tip of the lock arm 4 toward the rear, and a flat portion 7 that is approximately perpendicular to the outer surface of the lock arm 4 is formed on the back side of the tip (a sixth portion). (see figure).

Further, gate-shaped engagement frames 8 are provided on both outer surfaces of the protector body 1 at positions facing the lock arms 4, and a hole 9 into which the protrusion 5 is fitted is provided in the center of the engagement frame 8.

In the wire harness protector configured as described above, after housing the wire harness inside the protector body 1, as shown in FIG. As shown in FIG. 7B, after making the lid 3 approximately parallel to the protector body 1, as shown in FIG. 9 to lock the lid 3 to the protector body 1.

The reason why the lid 3 is held parallel to the protector body 1 and stacked on top of it in this way is as follows.

When the lid 3 is rotated using the hinge 2 as a rotation fulcrum, the rotation locus of the lid 3 will be as shown by the chain line in FIG. 4a interferes with the upper part 8a of the engagement frame 8, so that the protrusion 5 may not be fitted into the hole 9 of the engagement frame 8.

Therefore, the work of assembling the lid 3 must be carried out according to the troublesome procedure shown in FIG. Moreover, since an extra load is applied to the hinge 2, it is disadvantageous for a hinge having weak strength.

The present invention was developed in view of this problem, and provides a lock structure that allows the lid to be easily assembled and locked onto the protector body by simply rotating the lid around the hinge.

[Means for solving problems]

The present invention has a fixed side member and a rotating side member that is superimposed on the fixed side member with a hinge provided at one end as a rotation fulcrum, and the fixed side member and the rotating side member are overlapped with each other. Of the members, one member is provided with a lock arm on a side edge that is substantially perpendicular to the pivot point, a protrusion that projects laterally from the tip of the lock arm is provided, and the other member is provided with:
In the lock portion structure including an engagement frame having a hole into which the projection fits, the engagement frame has a notch on the opposite side of the hinge to avoid interference between the tip of the lock arm and the engagement frame. The protrusion is provided with a tapered surface on an end surface on the hinge side for guiding the protrusion into the notch.

[Effect]

When the rotating member and the hinge are used as fulcrums to rotate toward the stationary member, the engagement frame is provided with a notch to avoid interference with the tip of the lock arm, so the tip of the lock arm engages. It fits into the hole of the engagement frame and engages with the engagement frame without colliding with the frame.

In addition, the part of the protrusion that first comes into contact with the engagement frame (the end surface on the hinge side of the tip of the protrusion) is provided with a tapered surface that guides the protrusion into the hole via the notch. It is inserted smoothly into the hole.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

Note that the same parts as in the conventional example are given the same reference numerals.

In FIG. 3, the lid 3, which rotates about the hinge 2 as a fulcrum and overlaps the protector body 1, has a lock arm 4 erected on a side edge that is substantially perpendicular to the fulcrum. Similar to the conventional example, a protrusion 10 having a tapered part 6 and a flat part 7 on the opposite side is provided on the outer surface of the tip of the lock arm 4. It becomes tapered toward the direction of the protrusion 10, and the protrusion 1 is formed in a notch 13, which will be described later.
A tapered surface 11 is provided for guiding the insertion of 0 (see FIG. 2).

Further, on both side surfaces of the protector body 1, an engagement frame 12 having a hole 9 into which the protrusion 10 is fitted is installed at a position facing the protrusion 10.

The engagement frame 12 is provided with a notch 13 on the opposite side of the hinge 2 to avoid interference between the tip of the lock arm 4 and the engagement frame 12.

That is, the column 12a on the upper side of the gate-shaped engagement frame 12 is displaced in a direction away from the protrusion 10 to avoid interference with the protrusion 10, and the protrusion 1 approaches by rotating.
0 enters the notch 13, the tapered part 11 hits the engagement frame 12, and due to slight elastic deformation of the engagement frame 12, it fits into the hole 9 using the engagement frame 12 as a guide,
The opposite surface 10a of the tapered portion 11 hits the engagement frame 12 and is locked.

In this embodiment, the tapered portion 11 is provided on the protrusion 10 side, but the engagement frame 12 may be provided with a tapered portion 13a for guiding the insertion of the protrusion 10 (see FIG. 1).

Thus, the lid 3 is assembled and locked onto the protector main body 1 by simply rotating the lid 3 about the hinge 2 as a fulcrum.

Therefore, there is no need to increase the length of the thin wall portion of the hinge 2 as in the conventional case, and the assembling operation of the lid 3 can be performed much more easily than in the conventional case by a simple rotation operation.

The lock part structure as described above can be widely applied to locking members that are overlapped by a hinge, and includes cases where a member that rotates by a hinge is integrally connected to a counterpart member via the hinge. That is, as shown in FIG. 4, even when the lower case 14 and the upper case 15 are integrally connected via the hinge 2, the lock arm 4 and the engagement frame provided on the opposite side of the hinge 2, It can be locked by 12.

〔effect〕

The present invention has a lock arm on one member, a protrusion on the tip of the lock arm, and a hole in the other member into which the lock arm is inserted, in order to lock the members stacked on each other using the hinge as a rotational fulcrum. In the lock structure provided with an engagement frame, the engagement frame is provided with a notch on the opposite side of the hinge to avoid interference between the tip of the lock arm and the engagement frame, and the protrusion is provided with a notch on the opposite side of the hinge, Since a tapered surface is provided on the side end face to guide insertion of the protrusion into the notch, the protrusion can be easily inserted into the hole without causing the tip of the lock arm to interfere with the engagement frame.

In this way, it is possible to shorten the length of the thin-walled portion of the hinge, which reduces the oscillation of the portion supported by the hinge and prevents rattling in the lock portion. The service life can be extended.

The lock portion structure of the present invention having the above-mentioned advantages has almost no difference in cost compared to the conventional structure.

[Brief explanation of the drawing]

1 to 4 show embodiments of the present invention.
The figure is a perspective view of the lock part, Figure 2 is a perspective view of the main part of the protrusion, Figure 3 is a perspective view of the protector body and lid, Figure 4 is a perspective view of a box showing another embodiment, and Figure 5 is a perspective view of the main part of the protrusion. FIG. 6 is a perspective view of a main part of a lock portion in the conventional example, and FIG. 7 is a front view for explaining the assembly of parts in the conventional example. 1...Protector body, 2...Hinge, 3...
Lid, 4... Lock arm, 6... Taper part, 7
...Plane part, 9...hole, 10...protrusion, 11...
Tapered part, 12... Engagement frame, 13... Notch part.

Claims (1)

[Claims for Utility Model Registration] A fixed-side member and a rotating member superimposed on the fixed-side member using a hinge provided at one end as a rotational fulcrum, the fixed-side member and Among the members on the rotation side, one member is provided with a lock arm on a side edge that is almost perpendicular to the rotation fulcrum, a protrusion that projects laterally from the tip of the lock arm is provided on the other member,
In the lock portion structure including an engagement frame having a hole into which the projection fits, the engagement frame has a notch on the opposite side of the hinge to avoid interference between the tip of the lock arm and the engagement frame. A lock part structure, characterized in that the protrusion or the notch is provided with a tapered surface on an end face on the hinge side or an end face of the notch to guide insertion of the protrusion into the notch.