JP2509930Y2 - Resin bumper harness fixed structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a harness fixing structure for a resin bumper.

[Conventional technology]

Conventionally, a resin bumper has been widely used as a rear bumper of an automobile, but a lateral rib for reinforcement is integrally provided on an inner surface of the resin bumper in order to enhance bending rigidity in a vehicle width direction. In addition, the rear bumper has a license lamp,
Various lamps such as a backup lamp and a rear fog lamp are attached, but the wiring harness is fixed by utilizing the lateral ribs.

Fig. 4 shows an example of the harness fixing structure.
The horizontal ribs 11 of 10 are provided with mounting holes 12 at regular intervals,
The wedge-shaped lower end of the clamp member 13 is inserted into the mounting hole 12, and the harness 15 connected to the lamp 14 is held at the upper end to fix the harness 15 along the upper surface of the lateral rib 11.

[Problems to be solved by the device]

However, in the method of inserting and fixing the clamp member 13 into the mounting hole 12 of the lateral rib 11 as described above, since the mounting hole 12 is provided in the direction perpendicular to the die cutting direction of the rear bumper 10,
A special mold such as a slide mold has to be used for molding, which causes a cost increase. Further, since the inserting direction of the clamp member 13 is perpendicular to the projecting direction of the lateral rib 11, there is a problem that the work is difficult to perform.

Therefore, the purpose of the present invention is to easily remove the mold during molding,
An object of the present invention is to provide a harness fixing structure for a resin bumper in which a work of mounting a clamp member is easy.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a structure in which reinforcing lateral ribs are integrally provided on an inner surface of a resin bumper, and a harness is fixed along the lateral ribs by a clamp member. Is formed of a spring plate having an approximately U-shaped cross section having an elastic piece and a back surface, and the lateral edge of the lateral rib into which the clamp member is inserted is slightly wider than the width dimension of the clamp member and the tip side is tapered. A sloping inclined surface is provided, and a harness holding portion that is curled to the outside to hold and hold the harness is provided at the tip of one elastic piece of the clamp member, and the elastic piece of the clamp member is inserted through the inclined surface. By inserting into the horizontal rib, the flat part on the inner side of the inclined surface of the horizontal rib is crimped from above and below between the harness holding part and the tip of the other elastic piece, and both side edges of the clamp member are pressed. In both end surfaces of the inclined surface it is intended for locking.

[Action]

The harness is held in advance in the harness holding portion of the clamp member, and the clamp member is inserted horizontally with respect to the lateral rib. At this time, the lateral rib is formed with an inclined surface that is slightly wider than the clamp member, so that the inclined surface serves as a guide surface and the clamp member is pushed open and smoothly inserted. And when you insert the clamp member all the way,
The harness holding part and the elastic piece pass over the inclined surface and are crimped to the flat part of the lateral rib. Therefore, there is no fear that the clamp member will fall out of the lateral rib, and since both side edges of the clamp member are positioned by the inclined surfaces, the displacement of the clamp member in the width direction is also eliminated.

〔Example〕

1 to 3 show an example of a rear bumper 1 having a harness fixing structure according to the present invention.

In the figure, a lateral rib 2 is integrally formed in the vehicle width direction on the inner surface of a rear bumper 1 made of resin, and a license lamp 3 is fixed downward at the center of the lateral rib 2. Further, a backup lamp 4 is fixed to the rear end of the rear bumper 1 toward the rear side, and the wiring harness 5 of the backup lamp 4 has the license lamp 3 described above.
The wiring is provided along the upper surface of the lateral rib 2 together with the harness.

The lateral rib 2 has a flat portion 2a having a substantially constant thickness, and an inclined surface 6 having a constant width A inclined downward as shown in FIG. 3 is provided on the upper surface of the tip edge portion of the flat portion 2a. It is provided intermittently.

On the other hand, the clamp member 7 is made of a metal leaf spring bent in a substantially U shape, and its width dimension B is slightly smaller than the width dimension A of the inclined surface 6. The clamp member 7 has a pair of elastic pieces 7a, 7b and a back surface portion 7c, and one elastic piece of the clamp member 7 is provided.
A harness holding portion 8 curled outward is provided at the tip of 7a to hold and hold the harness 5. In addition, a guide portion 9 that is open outward is formed at the tip of the other elastic piece 7b of the clamp member. The minimum distance D between the harness holding portion 8 and the guide portion 9 in the free state
Is smaller than the thickness C of the flat portion 2a of the lateral rib 2. Note that the distance D = 0, that is, the harness holding portion 8 and the guide portion 9 in the free state may contact each other.

The distance E between the rear portion 7c and the holding portion 8 or the guide portion 9 on the tip side of the clamp member 7 is longer than the length F of the inclined surface 6.

Next, a method of assembling the harness fixing structure having the above configuration will be described.

First, the harness 5 is held and held in advance in the harness holding portion 8 of the clamp member 7. Next, the clamp member 7 holding the harness 5 is horizontally inserted into the inclined surface 6 of the lateral rib 2. At this time, the harness holding portion 8 and the guide portion 9 of the clamp member 7 are open outwardly from each other, and the tip of the lateral rib 2 provided with the inclined surface 6 is tapered, so that the clamp member 7 is laterally moved. It is inserted into the rib 2 smoothly. Then, when the clamp member 7 is inserted all the way, the harness holding portion 8 and the guide portion 9 pass over the inclined surface 6 and are crimped to the flat portion 2a of the lateral rib 2. Due to this crimping force, there is no concern that the clamp member 7 will fall out of the lateral rib 2 even if vibration is applied during traveling, and both side edges of the clamp member 7 are locked by both end surfaces 6a of the inclined surface 6, so that the clamp member The position of 7 does not shift in the width direction. Therefore, the harness 5 can be securely fixed.

Further, when the clamp member 7 is press-fitted into the lateral rib 2, bending stress acts on the elastic pieces 7a, 7b and the back surface portion 7c of the clamp member 7, but the harness holding portion 8 holding the harness 5 does. Since no stress is applied to the harness 5, an unreasonable crimping force does not act on the harness 5. Therefore, it is possible to prevent problems such as damage and disconnection of the harness 5.

In addition, the clamp member is not limited to the illustrated shape,
A resin material may be used instead of the metal leaf spring.

Further, the harness fixing structure of the present invention is applicable not only to the rear bumper but also to the front bumper.

[Effect of device]

As is apparent from the above description, according to the present invention, since the inclined surface is formed on the lateral rib of the bumper and the outwardly curled harness holding portion is formed at the tip of the elastic piece of the clamp member, Since the clamp member can be easily inserted into the lateral rib and the clamping member can be inserted in only one direction, workability is improved as compared with the conventional case where the clamp member is inserted into the lateral rib at a right angle.

Moreover, since the inclined surface serves as a mark for the mounting structure of the clamp member, the harness holding work is easy to perform, and since both side edges of the clamp member are locked by both end surfaces of the inclined surface, lateral displacement of the clamp member is prevented. You can also

Further, since the inclined surface is inclined in the protruding direction of the lateral ribs, that is, in the die-removing direction of the rear bumper, it can be easily formed simultaneously with the molding of the rear bumper without using a special die such as a slide die.

Further, since the harness holding portion that holds and holds the harness is curled outward, no stress is applied to the harness holding portion of the clamp member when the clamp member is pressed into the lateral rib. As a result, the harness is not forcedly pressed, and problems such as damage and disconnection of the harness can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view seen from the inside of a rear bumper having a harness fixing structure according to the present invention, FIG. 2 is an enlarged sectional view taken along line II-II of FIG. 1, and FIG. 3 is an exploded perspective view of essential parts. FIG. 4 is a sectional view of a conventional example. 1 ... Resin rear bumper, 2 ... Lateral rib, 2a ... Flat part, 5 ... Harness, 6 ... Inclined surface, 7 ... Clamping member, 7a, 7b ... Elastic piece, 7c ... Rear part, 8: Harness holding part.

Claims (1)

(57) [Scope of utility model registration request] 1. A structure for integrally providing reinforcing lateral ribs on an inner surface of a resin bumper and fixing a harness along the lateral ribs by a clamp member, wherein the clamp member includes a pair of elastic pieces and a back surface portion. Is formed of a spring plate having a substantially U-shaped cross section, and the lateral edge into which the clamp member is inserted is provided with an inclined surface slightly wider than the width dimension of the clamp member and inclined so that the tip side is tapered, The end of one elastic piece of the clamp member is provided with a harness holding portion that is curled outward in order to hold and hold the harness. By inserting the elastic piece of the clamp member into the lateral rib through the inclined surface, the harness A flat portion on the inner side of the inclined surface of the horizontal rib is crimped from above and below between the holding portion and the tip of the other elastic piece, and both side edges of the clamp member are locked by both end surfaces of the inclined surface. A harness fixing structure for a resin bumper, which is characterized in that