JPH1191406A - Structure locking electric wire to resin mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and inexpensively form a locking means of an electric wire, and improve recycling performance of a resin mold without impairing beauty surface in appearance of the resin mold. SOLUTION: In a structure locking an electric wire wired in a resin mold, plural plate-like bodies 13a by building up (13b) the inside of a root part, are integrally erected on both sides of a wiring passage A of the electric wire on the reverse of the resin mold, and the plate-like bodies 13a are constituted so as to become a locking piece 13 of the electric wire by inclining to the wiring passage A side of the electric wire by volume contraction of a resin material of building-up parts 13b when the mold separated resin mold is cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for locking an electric wire to a resin molded body such as an instrument panel, a pillar trim and a roof trim of a vehicle, and more particularly, to a structure without impairing the appearance of the surface of the resin molded body. Also, the present invention relates to a structure for locking an electric wire to a resin molded body, which can easily and inexpensively form an electric wire locking means and can improve the recyclability of the resin molded body.

[0002]

2. Description of the Related Art Various displays, meters, lights, air conditioners,
2. Description of the Related Art In order to electrically connect electrical components such as audio, a wire harness including a large number of electric wire bundles and connectors is arranged inside a vehicle.

[0003] In recent years, instrument panels,
Assembly work on vehicles such as pillar trim and roof trim,
In order to improve the efficiency of the wiring harness wiring work, separate and independent wire harnesses are previously locked to these instrument panels, pillar trims, roof trims, etc., and these members are unitized. Have been.

As a conventional structure for locking a wire harness to an instrument panel, for example, Japanese Utility Model Laid-Open No. 1-105
327 is proposed. FIG. 9 is a rear side perspective view showing a conventional structure for locking a wire harness to an instrument panel, and FIG. 10 is a partial cross-sectional view showing the structure for locking the wire harness.

[0005] In these drawings, a wiring route for a wire harness 110 is conventionally formed by integrally arranging opposing walls 101, 101 at predetermined intervals on the back surface of an instrument panel 100. After arranging the wire harness 110 between the two walls 101, 101, the wire harness 110 is locked by filling the foamable resin material 102 between the both walls 101, 101. .

[0006]

In recent years, from the point of view of the public interest of effective use of resources, it has become necessary to recycle an instrument panel, which is a resin molded body, as a resin material after disposing of a vehicle. However, as in the above-described conventional locking structure, the wiring route formed by the two wall portions 101, 101 is filled with the foamed resin material 102 and the wire harness 1 is formed.
In the configuration for locking the instrument panel 10, the instrument panel 10
It is difficult to remove the unnecessary wire harness 110 from 0, disassembling is troublesome, and there is a problem that the recyclability is lacking.

When the wire harness 110 is locked, a foamed resin material 102 is interposed between the two wall portions 101, 101.
Must be filled, and the instrument panel 10
There is also a problem that the wire harness 110 cannot be easily locked at 0.

[0010] As shown in FIG. 11, a pair of locking claws 20 are provided in the wiring route on the back of the instrument panel 200.
1, 201 are integrally formed at a predetermined interval, and these locking claws 20 are formed.
It is also conceivable that the wire harness 210 is locked to the back surface of the instrument panel 200 by 1,201.

However, the locking claws 201, 201 have a rewinding portion 20 for holding the wire harness 210.
1a must be formed, and a slide mold must be used to form the rewind portion 201a.
Further, a through hole 202 for cutting the slide mold is provided.
Must be provided on the instrument panel 200.

For this reason, there is a problem that the use of the slide mold increases the manufacturing cost of the locking claws 201, 201, and the through-hole 202 impairs the beauty of the surface (decorative surface) of the instrument panel 200. There was a problem that was.

The present invention has been made in view of the above problems, and without impairing the appearance of the surface of a resin molded product.
An object of the present invention is to provide a structure for locking an electric wire to a resin molded body, which can easily and inexpensively form an electric wire locking means and can improve the recyclability of the resin molded body.

[0012]

In order to achieve the above object, a structure for locking an electric wire to a resin molded product according to claim 1 is provided.
A structure for locking the electric wires routed to the resin molded body,
On both sides of the wiring route of the electric wire on the back surface of the resin molded body, a plurality of plate-like bodies with the inside of the root portion are integrally erected, and at the time of cooling the released resin molded body, The plate-like body is inclined toward the wiring route side of the electric wire due to the volume contraction of the resin material in the built-up portion, and serves as a locking piece of the electric wire.

[0013] In the above-mentioned structure for locking the electric wire to the resin molded body,
After forming a straight plate-like body without inclination by a normal mold without using a slide mold, when the released resin molded body is cooled, the base material of the base of the plate-like body is positively increased by the build-up. A sink occurs, whereby the plate-like body is inclined toward the wiring route of the electric wire, and a locking piece of the electric wire is formed later.

According to such a configuration, the electric wire locking means can be formed easily and inexpensively without using a slide mold, and the appearance of the surface of the resin molded body is not spoiled.
Further, by raising the inclined locking piece or pulling the electric wire, the locking of the locking piece can be easily released, and the electric wire can be easily removed from the resin molded body. Therefore, the recyclability of the resin molded body can be improved.

According to a second aspect of the present invention, in the structure for locking an electric wire to a resin molded body, a pair of walls forming a wiring path of the electric wire are integrally formed on the back surface of the resin molded body. And a part of the wall part is made independent by two slits, and the part made independent is made into the plate-like body.

According to such a configuration, since the wiring route of the electric wire is formed by the wall portion, the electric wire can be easily and accurately routed on the back surface of the resin molded body, and the electric wire can be routed along the wiring route. The wires arranged in this manner can be easily locked by the locking pieces. Further, the wall portion serves as a reinforcing rib, and the strength of the resin molded body can be improved.

According to a third aspect of the present invention, in the structure for locking an electric wire to a resin molded body, the plate-shaped body is provided upright on both sides of the wiring route of the electric wire. The locking structure of the electric wire to the resin molded body is such that the plate-like body is alternately provided on both sides of the wiring route of the electric wire.

When the plate-like body is erected on both sides of the wire routing path, the center of the wire is locked by the two locking pieces made of the two plate-like bodies, and the wire is engaged in a stable state. Can be stopped.

When the plate-like members are alternately provided on both sides of the wire routing path, the holding force of the locking pieces by the wire is lower than when the plate-like members are opposed to each other as described above. Therefore, a sufficient holding force for locking the electric wire can be obtained, and the electric wire can be locked and unlocked more easily.

According to a fifth aspect of the present invention, there is provided a structure for locking an electric wire to a resin molded body, wherein an instrument panel, a pillar trim, and a roof trim, which are resin molded bodies, are each formed with a locking piece made of the plate-like body. By arranging and locking separate and independent wire harnesses, the instrument panel, pillar trim and roof trim are unitized.

According to such a configuration, the instrument panel, the pillar trim, and the roof trim are attached to the vehicle body, and the respective wiring harnesses are connected by connectors. Wiring work of the wiring harness can be omitted.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a structure for locking an electric wire to a resin molding according to the present invention will be described with reference to the drawings. First, a structure for locking an electric wire to a resin molded body according to the first embodiment of the present invention will be described. In this embodiment,
The locking structure of the present invention is provided on an instrument panel of a vehicle, which is a resin molded body.

FIG. 1 is a perspective view of an instrument panel provided with a wire locking structure according to a first embodiment of the present invention, and FIG. 2 is an enlarged view of a main part showing the wire locking structure. FIG. 3A is a cross-sectional view of a wall portion forming an electric wire routing path in the locking structure, and FIG. 3B is a plate-like shape forming a locking piece of the electric wire in the locking structure. It is sectional drawing which shows a body. FIGS. 4A and 4B are cross-sectional views for explaining the locking piece.

In FIG. 1, reference numeral 10 denotes an instrument panel which is a resin molded body, and a pair of walls 11, 1 forming a wiring route A of a wire harness 40 are provided on the back surface thereof.
Numerals 1 are integrally provided so as to face each other. The routing route A formed by the walls 11, 11 is bent and branched in accordance with the form of the wire bundle 41 constituting the wire harness 40.

As shown in FIGS. 1 and 2, the walls 11, 1
In the middle of 1, a pair of opposing locking pieces 1 independent of the walls 11, 11 by two slits 12, 12.
A plurality of 3 and 13 are provided. These locking pieces 13 have flexibility and hold the center of the wire bundle 41 from both sides.

It is to be noted that the locking pieces 13 and 13 are
It is preferable to provide it in the vicinity of the first bent portion and the branch portion. In the straight portions of the walls 11, 11, the locking pieces 13, 13 may be appropriately provided according to the length of the straight portions. In the case of the instrument panel 10, about 30 c
If provided at m intervals, the slack of the wire bundle 41 can be reliably prevented.

The structure of the locking pieces 13 will be described in more detail. The locking pieces 13 are integrally injection-molded simultaneously with the instrument panel 10 by using a mold (not shown). At the time of injection molding, as shown in FIG. Shape 1
3a and 13a are formed.

FIG. 3B shows a plate-like body 13 during injection molding.
a and 13a have substantially the same thickness and height as the wall portions 11 and 11 shown in FIG. However, the walls 11, 1
Unlike the first embodiment, the base portions of the plate-like members 13a, 13a are provided with overlays 13b, 13b.

Here, after the injection molding, the released instrument panel 10 is left in a room and naturally cooled to the ambient temperature. In this case, the thin plate members 13a, 13
a is cooled quickly, and the thick overlays 13b, 13b are cooled slowly.

During such cooling, the volume of the resin material shrinks, and the plate-like members 13a, 13a in a straight state become
FIG.
As shown in (a), it is inclined to the routing route A side. As a result, the plate-like members 13a become the locking pieces 13, and the wire bundle 41 can be elastically held as shown in FIG. 4B.

That is, according to the locking structure of the present embodiment, after the straight plate-like members 13a, 13a having no inclination are formed by an ordinary die that does not use a slide die, cooling of the released instrument panel 10 is performed. Sometimes, the plate 13a,
The overfill 13b, 13b at the base of the base 13a positively causes "sinking", whereby the plate 13
a, 13a to the routing route A side, and the electric wire bundle 4
One locking piece 13, 13 is formed.

The amount of the build-up 13b, 13b
3B is determined according to the angle of inclination of the first and second plates 13a and 13a.
The shape is not limited to the arc shape as described above, and may be any shape.

The walls 11, 11 shown in FIG.
In contrast to the plate-like members 13a, 13a, it is necessary to positively prevent sink marks, and the thickness thereof must be thin and uniform.

In the locking structure of the present embodiment having the above configuration, as shown in FIG. 1, the electric wire bundle 41 constituting the wire harness 40 is moved along the routing route A formed by the walls 11, 11. While arranging the wire bundle 41,
Push between 3,13. Then, several places of the wire bundle 41 are locked by the locking pieces 13, 13, and the wiring state of the wire bundle 41 is maintained.

At this time, the connectors 42, 42... Provided at each end of the wire bundle 41 are connected to the instrument panel 1.
0 are provided in mounting holes 14, 14... Of various electric components (meters, air conditioners, etc.) not shown.

The instrument panel 10 on which the wire harness 40 is routed and locked as described above becomes an independent unit like various electric components, and the instrument panel 10 is attached to the vehicle body when assembling the vehicle. The wiring work of the wire harness 40 becomes unnecessary only by assembling.

According to the structure for locking the electric wire to the resin molded body of the present embodiment, the locking pieces 13, 13 of the wire bundle 41 can be formed easily and inexpensively without using a slide mold. As a result, the beauty of the surface of the instrument panel 10 is not spoiled.

Further, the inclined locking pieces 13, 13 are raised,
Alternatively, by pulling the wire bundle 41, the locking piece 1
The lock of the members 3 and 13 can be easily released, and the wire bundle 41 can be easily removed from the instrument panel 10. Therefore, the recyclability of the instrument panel 10 as a resin molded body can be improved.

Further, the wire bundle 4 is formed by the walls 11 and 11.
By forming the first routing route A, the wire bundle 41 can be easily and accurately routed on the back surface of the instrument panel 10, and the wire bundle 41 routed along the routing route A can be provided. The locking pieces 13 can easily be locked. In addition, since the walls 11 and 11 serve as reinforcing ribs, the instrument panel 10
Can be improved in strength.

Next, a description will be given of a structure for locking an electric wire to a resin molding according to a second embodiment of the present invention. This embodiment has a configuration in which the same locking structure as in the first embodiment is provided on a pillar trim and a roof trim of a resin molded body of a vehicle. FIG. 5 is a perspective view of a pillar trim provided with an electric wire locking structure according to the second embodiment of the present invention. Similarly, FIG. 6 is a roof provided with an electric wire locking structure according to the second embodiment of the present invention. It is a perspective view of a trim.

In FIG. 5, reference numeral 20 denotes a pillar trim, which is formed of a resin molding and is assembled to a front pillar of a vehicle (not shown). On the back surface of the pillar trim 20, a pair of opposing walls 21 and 21 are integrally erected, and the walls 21 and 21 form a straight routing path B.
Is formed. Also, on both ends of the wall portions 21 and 21,
The wall portions 21, 21 are formed by slits 22, 22, respectively.
And locking pieces 23, 23 independent of the above.

The walls 21, 21 and the locking pieces 23, 2
A wire harness 40 is routed and locked on the back surface of the pillar trim 20 by using 3, so that the pillar trim 20 is unitized similarly to the instrument panel 10 described above.

In FIG. 6, reference numeral 30 denotes a roof trim, which is formed of a resin molded body and is assembled to a vehicle roof (not shown). On the back surface of the roof trim 30, a pair of opposing walls 31, 31 are integrally erected, and a wiring route C bent and branched by the walls 31, 31 is formed. In addition, slits 32, 32 are provided at the end portions, bent portions, and branch portions of the wall portions 31 to form
Locking pieces 33, 33 independent of the first and the first 31 are appropriately provided.

The wall portions 31, 31 and the locking pieces 33, 3
A wire harness 40 is routed and locked on the back surface of the roof trim 30 by using the roof trim 3, and the roof trim 30 is unitized like the instrument panel 10 and the pillar trim 20.

As described above, if the instrument panel 10, the pillar trim 20, and the roof trim 30 are each unitized by the final locking structure, as shown in FIG. 7, the instrument panel 10, the pillar trim 20 Conventionally, by assembling the roof trim 30 and connecting the respective wire harnesses 40 with connectors,
The wiring work of the wiring harness 40 from the instrument panel 10 to the roof trim 30, which has been considered difficult, can be omitted.

The structure for locking the electric wire to the resin molded body of the present invention is not limited to the above embodiments.

For example, in each of the above-described embodiments, the two locking pieces 13, 13 (23, 23 or 33, 33) are opposed to both sides of the routing path A (B or C) of the wire bundle 41 so as to stand. With this arrangement, the center of the wire bundle 41 is locked, and the locked state of the wire bundle 41 is stabilized.
The mode of forming 13 is not limited to this.

That is, as shown in FIG. 8 (a), two or more locking pieces 13, 13...
May be alternately provided on both sides of the routing path A. With such a configuration, the holding force of the wire bundle 41 is lower than when the locking pieces 13 are opposed to each other,
A sufficient holding force for locking the wire bundle 41 can be obtained, and locking and unlocking of the wire bundle 41 can be performed more easily.

Further, as shown in FIG.
1, 11 (21, 21 or 31, 31) may be omitted, and only the locking pieces 13, 13 may be provided on the back surface of the instrument panel 10 or the like.

Further, the electric wire locking structure of the present invention is not limited to the vehicle instrument panel 10 and the like as described above, but may be applied to various resin molded articles that need to arrange and lock electric wires. Can be.

[0051]

As described above, according to the structure for locking an electric wire to a resin molded product of the present invention, the electric wire locking means can be formed simply and inexpensively without impairing the appearance of the surface of the resin molded product. And the recyclability of the resin molded article can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an instrument panel provided with an electric wire locking structure according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part showing a locking structure of the electric wire.

FIG. 3A is a cross-sectional view of a wall forming an electric wire routing path in the locking structure, and FIG. 3B is a diagram illustrating a locking piece of the electric wire in the locking structure. It is sectional drawing which shows a plate-shaped body.

FIGS. 4A and 4B are cross-sectional views for explaining the locking piece. FIG.

FIG. 5 is a perspective view of a pillar trim provided with an electric wire locking structure according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a roof trim provided with an electric wire locking structure according to a second embodiment of the present invention.

FIG. 7 is a perspective view showing a state where the instrument panel, pillar trim and roof trim are assembled to a vehicle body.

FIGS. 8A and 8B are enlarged views of a main part showing a modification of the electric wire locking structure of each of the above embodiments.

FIG. 9 is a rear side perspective view showing a conventional structure for locking a wire harness to an instrument panel.

FIG. 10 is a partial cross-sectional view showing the locking structure of the conventional wire harness.

FIG. 11 is a partial cross-sectional view showing another conventional wire harness locking structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Instrument panel (resin molding) 20 Pillar trim (resin molding) 30 Roof trim (resin molding) 11,21,31 Wall 12,22,32 Slit 13,23,33 Locking piece 13a Plate 13b Overlay 14 Mounting holes A, B, C Routing path 40 Wire harness 41 Wire bundle 42 Connector

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B60R 13/02 B60R 13/02 Z

Claims (5)

[Claims] 1. A structure for locking an electric wire routed to a resin molded body, wherein a plurality of plates are provided on both sides of a wiring route of the electric wire on a back surface of the resin molded body, the inside of a base portion being built up. The plate-shaped body leans toward the wiring route side of the electric wire due to volume shrinkage of the resin material in the built-up portion when the released resin molded body is cooled. A structure for locking an electric wire to a resin molded body, wherein the electric wire serves as a locking piece for the electric wire. 2. A pair of walls forming a wiring route of the electric wire are integrally erected on a back surface of the resin molded body in a state where the walls are opposed to each other, and a part of the wall is formed by two walls. 2. The structure for locking an electric wire to a resin molded product according to claim 1, wherein the slit is made independent, and the part made independent is the plate-like body. 3. The structure for locking an electric wire to a resin molded product according to claim 1, wherein the plate-like body is erected on both sides of a wiring route of the electric wire. 4. The structure according to claim 1, wherein the plate-like bodies are alternately provided on both sides of the wiring route of the electric wire. 5. An instrument panel, a pillar trim and a roof trim, which are resin molded bodies, each having a locking piece formed of the plate-like body, and separately arranging and locking a wire harness which is independent of each other. 5. The structure according to claim 1, wherein said instrument panel, pillar trim and roof trim are unitized.