JPH0783214A - Fitting mechanism to bracket in resin molded part - Google Patents

Abstract

PURPOSE:To prevent an insertion port from being deformed, so as to improve inserting workability of a bracket by providing a spacer for keeping the distance between a wall surface and a wall surface on a fitting frame side parallel to the wall surface, and allowing the insertion of a bracket when the bracket is inserted therein on an insertion port. CONSTITUTION:An insertion port 7 is to be deformed by contraction in cooling after molding, but the deformation of the insertion port 7 is restrained because a pillar 20 is positioned in the insertion port 7 in the propping state. In this state, when a bracket 1 is inserted into the insertion port 7, the tip of the bracket 1 is brought in contact with the pillar 20, and the contact part is broken and folded by taking a hinge as a fulcrum because the one end of the pillar 20 is connected to a wall surface 5 by a very-thin hinge. In this case, since the pillar 20 is inclined, fracture of the very-thin hinge can be easily performed. Since the pillar 10 is housed in a groove 30, the insertion of the bracket 1 is allowed and the bracket 1 can be inserted into the fitting position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fitting of a resin molded component such as a clamp or various boxes, which are incidental components of a wire harness of an automobile, to a bracket of a mating member. With regard to the coordination mechanism.

[0002]

2. Description of the Related Art FIG. 4 shows a fitting mechanism similar to that described in Japanese Utility Model Laid-Open No. 3-40783. This type of fitting mechanism is used when, for example, a resin molded part is connected to a bracket on the mating member side, a tongue-shaped bracket 1 is provided on the mating member side, and the tip end portion of the bracket 1 is provided. Has a circular engagement hole 3 penetrating in the thickness direction.

A fitting frame 10 having a U-shaped cross section having an insertion port 7 for the bracket 1 is integrally formed on the wall surface 5 on the resin molded component side. The fitting frame 10 includes the side wall portions 10
a, 10a and an outer wall portion 10b, the outer wall portion 1
2 parallel cuts 1 from the side opposite to the insertion port 0
By inserting 2 and 12, the elastic arm 15 is formed between them. Further, on the inner surface of the elastic arm 15, there is formed a columnar engagement protrusion 17 that fits into the engagement hole 3 of the bracket 1. A guide slope 1 for facilitating the engagement is provided on the side surface of the engagement protrusion 17 on the insertion port 7 side.
7a is formed. Here, the elastic arm 15 and the engaging projection 17 constitute a locking means.

The opening of the fitting frame 10 on the side opposite to the insertion port 7 is partially closed by the reinforcing walls 10c and 10c. These reinforcing wall portions 10c and 10c are the fitting frame 1
It reinforces the collapse of 0 and is not provided on the elastic arm 15 but is provided only on both outer sides of the cut 12.

In such a fitting mechanism, the fitting frame 10
To fit the bracket 1 and the bracket 1, the bracket 1 is inserted into the fitting frame 10 through the insertion port 7. Then, the bracket 1
When the tip of the contacting portion hits the guide slope 17a of the engaging protrusion 17 and the elastic arm 15 elastically deforms to allow the bracket 1 to be inserted and the engaging hole 3 reaches the engaging protrusion 17, the engaging protrusion 17 engages. It goes into the hole 3, and the bracket 1 and the fitting frame 1
0 is locked.

[0006]

By the way, in the above fitting mechanism, since a reinforcing wall cannot be provided on the insertion port 7 side, as shown in FIGS. 6 and 7, during cooling after molding. Due to the contraction, the outer wall portion 10b is warped on the insertion port 7 side, and the insertion port 7 may be narrowed.

In this case, there is a problem that the bracket 1 cannot be inserted into the insertion port 7 or is difficult to be inserted, so that workability may be significantly impaired.

In view of the above circumstances, an object of the present invention is to provide a fitting mechanism capable of preventing the deformation of the insertion port and improving the workability of inserting the bracket.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a fitting frame having a U-shaped cross section having an insertion opening for a tongue-shaped bracket is integrally formed on the wall surface of a resin molded part, and the fitting frame is provided inside the fitting frame. In a fitting mechanism for a bracket in a resin molded component provided with a locking means for the bracket, the insertion port holds a space between the wall surface and a wall surface on a fitting frame side parallel to the wall surface during molding, and The feature is that a spacer is provided to allow the bracket to be inserted when the bracket is inserted.

[0010]

In the fitting mechanism having the above construction, the spacer is provided at the insertion port to support the wall of the fitting frame, so that the deformation due to the contraction during cooling after molding can be prevented. Further, when the bracket is inserted, the spacer is broken to allow the bracket to be inserted, so that the bracket can be reliably inserted to the fitting position.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1, 2 and 3 show an embodiment of the present invention. In the fitting mechanism of this embodiment, the fitting frame 10
A short column (spacer) 20 which is a substitute for a reinforcing wall is erected in the insertion port 7 and the both ends of the column 20 are connected to the wall surface 5 and the outer wall portion 10b of the fitting frame 10 to reduce the time of contraction. The outer wall portion 10b is prevented from being deformed.

Two pillars 20 are arranged at positions corresponding to both widths of the elastic arm 15, and are pivotally connected to the outer wall portion 10c by a hinge 22. Further, it is connected to the wall surface 5 with an ultrathin hinge 24. This ultra-thin hinge 24 is easily broken when the bracket 1 is inserted, and is arranged at the front end edge of the column 20, as shown in FIG.

The hinge 22 is provided on the inner edge of the front end of the groove 30 provided on the inner surface of the outer wall portion 10c for accommodating the column 20, and is located closer to the insertion port 7 side than the ultrathin hinge 24. Then, the pillar 20 is inclined such that the outer wall portion 10b side is closer to the insertion port 7 side than the wall surface 5 side.

Since the other construction is the same as that of the conventional example of FIG. 4, the same reference numerals are given and the description thereof is omitted.

Next, the operation will be described.

The insertion port 7 tries to deform due to contraction during cooling after molding, but since the pillar 20 is located in a state of being stretched in the insertion port 7, deformation of the insertion port 7 is suppressed. To be In this state, when the bracket 1 is inserted into the insertion port 7,
The tip of the bracket 1 hits the pillar 20, but since one end of the pillar 20 is connected to the wall surface 5 by the ultrathin hinge 24, that portion is destroyed and folded with the hinge 22 as a fulcrum. In this case, since the pillar 20 is inclined, the breakage of the ultrathin hinge 24 becomes easy. Then, the pillar 20 is accommodated in the groove 30, so that the bracket 1 can be inserted and the bracket 1 can be inserted to the fitting position.

It is desirable that the number of columns 20 be appropriately changed according to the width of the insertion port 7 and the like. Further, the pillar 20 may be folded toward the wall surface 5 side instead of being folded toward the outer wall portion 10b side. In addition, a spacer other than the column 20 may be provided which holds the gap between the insertion ports 7 during molding and retracts when the bracket 1 is inserted.

[0019]

As described above, according to the present invention,
Since it is possible to prevent deformation of the fitting frame during cooling after molding, it is possible to insert the bracket securely and easily,
Workability can be improved.

[Brief description of drawings]

FIG. 1 shows a configuration of a fitting frame side in an embodiment of the present invention, (a) is a plan view, (b) is a front view as seen from the insertion side, and (c) is a view of (a). It is an Ic-Ic arrow line sectional view.

FIG. 2 is an enlarged view of a II circle portion of FIG. 1 (c).

FIG. 3 is a sectional view similar to FIG. 1 (c) showing a state in which a bracket is inserted in the fitting frame in the embodiment of the present invention.

FIG. 4 is a perspective view of a conventional fitting mechanism.

5A and 5B show a configuration of a conventional fitting mechanism, in which FIG. 5A is a plan view, FIG. 5B is a front view seen from the insertion port side, and FIG. 5C is a sectional view taken along line Vc-Vc in FIG. It is a figure.

FIG. 6 is a perspective view showing a state where an outer wall portion of a fitting frame of a conventional fitting mechanism is deformed.

FIG. 7 shows the same state as FIG. 6, (a) is a plan view,
(B) is the front view seen from the insertion port side, (c) is the VIIc-VIIc arrow sectional view of FIG.

[Explanation of symbols]

 1 bracket 5 wall surface 7 insertion port 10 fitting frame 10c outer wall portion (wall surface on fitting frame side parallel to wall surface 5) 15 elastic arm (locking means) 17 engaging protrusion (locking means) 20 pillar (spacer)

Claims (1)

[Claims] 1. A fitting frame having a U-shaped cross section having an insertion opening for a tongue-shaped bracket is integrally formed on the wall surface of the resin molded component,
In a fitting mechanism for a bracket in a resin molded part in which a locking means for the bracket is provided inside the fitting frame, the wall surface at the time of molding and the wall surface on the fitting frame side parallel to the wall surface at the insertion port. A fitting mechanism for a bracket in a resin-molded component, characterized in that a spacer is provided to hold the space between the bracket and allow the bracket to be inserted when the bracket is inserted.