JP2006151110A - Clamp for wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a clamp body to be easily mounted in an aluminum frame in an irrotational state, and to suitably arrange the wire harness by absorbing even shape changes such as more or less steps or curves on the aluminum frame surface enabling the wire harness to be arranged. <P>SOLUTION: The wire harness 20 is held to be arranged on the aluminum frame through the clamp body in the clamp for the wire harness by inserting a fitting part integrally projected from the clamp body 10 into a retained hole in the aluminum frame of a vehicle. The clamp body 10 has a flexible part 14 elastically deformed in the extending and contracting directions and in bending direction in a middle part in the longitudinal direction of the wire harness 20. The clamp body 10 has fitting parts 16 to be inserted into the two retained holes in the aluminum frame on both side with the flexible part 14 interposed therebetween. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention particularly relates to an aluminum frame vehicle, and relates to a wire harness clamp for routing a wire harness to the aluminum frame.

  Generally, an iron frame is press-molded, whereas an aluminum frame is extruded. When wiring a wire harness with respect to these frames, a clamp body to which the wire harness is fixed in advance is attached to the frame. Therefore, the clamp main body is formed with a locking portion integrally protruding, and the frame is provided with a locking hole for inserting the locking portion. When opening this locking hole in the frame, the iron frame and the aluminum frame can use punching during pressing due to the difference in the individual forming means, while the aluminum frame requires drilling after extrusion. There is. As a result, a long hole (7 × 12 mm) locking hole can be easily opened in the iron frame depending on the shape of the punch. However, drilling a long hole-shaped locking hole in an aluminum frame increases the number of processing steps and increases costs. For this reason, about the latching hole of an aluminum frame, reduction of processing cost is aimed at by making it the hole of a perfect circle (round hole) by one-step drill processing.

The reason why the locking hole of the frame is in the shape of a long hole is to prevent the clamp body from rotating with respect to the frame in a state where the locking portion of the clamp body is inserted into the locking hole. However, in the case of an aluminum frame, since the locking hole is a round hole, another detent means must be employed. For example, in the technique disclosed in Patent Document 1, a locking portion of the clamp body is inserted into the locking hole of the frame, and the clamp body is bolted to the frame at a location offset from the locking portion. In such a means, it takes time to prevent one clamp body from rotating, and workability is poor.
JP 2003-267160 A

  The present invention is intended to solve the above-mentioned problems, and its purpose is to easily attach the clamp body to the aluminum frame in a non-rotating state even if the locking hole of the aluminum frame is a perfect hole. And even if there are some steps or curvature changes in the aluminum frame surface where the wire harness is routed, it is possible to properly route the wire harness by absorbing these is there.

The present invention is for achieving the above object, and is configured as follows.
According to the first aspect of the present invention, the clamp body is formed by inserting a locking portion formed integrally with the clamp body to which the wire harness is fixed into a locking hole formed in the aluminum frame of the vehicle. A wire harness clamp that is held in a state in which the wire harness is routed with respect to the aluminum frame, and the clamp main body extends in an extension direction and a bending direction at an intermediate portion along the length direction of the wire harness. The flexible part which can be elastically deformed is provided. In addition, on both sides of the flexible portion, there are provided locking portions for individually inserting into the locking holes opened at two locations of the aluminum frame.

  According to this configuration, when wiring the wire harness to the aluminum frame, the two locking portions of the clamp body are inserted into the locking holes opened at two locations of the aluminum frame, thereby Even if both the locking holes are perfect holes, the clamp body can be easily prevented from rotating. Moreover, due to the flexible part of the clamp body, even if there is a change in shape such as some steps or curvature on the aluminum frame surface where the wire harness is routed, or even if there are pitch variations in the two locking holes, By absorbing these, the locking portions of the clamp body can be properly inserted into the respective locking holes.

Invention of Claim 2 is a clamp for wire harnesses described in Claim 1, Comprising: A clamp main body is equipped with the tape winding part for fixing a wire harness by tape winding in the both sides of a flexible part. Yes.
Thereby, when wiring a wire harness following the right angle corner of an aluminum frame, a clamp main body can be bent and wired with a wire harness at a right angle by the flexible part.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view showing a wire harness clamp. FIG. 2 is an explanatory view showing one example of use of the wire harness clamp. The clamp body 10 is an integrally molded product made of a resin material, and an intermediate portion of a flat substrate 12 that extends long in one direction is a flexible portion 14. The flexible portion 14 can be elastically deformed in the expansion / contraction direction and the bending direction due to the flexibility of the resin material. In order to facilitate this elastic deformation, it is preferable to make the thickness of the flexible portion 14 thinner than other portions as shown in the drawings. However, when the clamp body 10 is formed of a flexible resin material, the flexible portion 14 does not necessarily have to be thin.

  On one side surface of the substrate 12 in the clamp body 10, locking portions 16 are formed so as to protrude integrally near both ends thereof. That is, both the locking portions 16 are located on both sides of the substrate 12 with the flexible portion 14 interposed therebetween. Further, as shown in FIG. 2, both the locking portions 16 are individually inserted into locking holes 32 opened at two locations of the aluminum frame 30 of the vehicle, so that the clamp body 10 is attached to the aluminum frame 30. Is for.

  Therefore, the tips 16a of both locking portions 16 have a tapered shape, and a large number of engagement pieces 16b are formed on the outer periphery of the portion excluding the tips 16a. Therefore, when the locking portion 16 is inserted into the locking hole 32, each of the engagement pieces 16 b sequentially passes through the locking hole 32, and finally, any one of the plurality of engagement pieces 16 b is the locking hole 32. Lock to the edge of the. As a result, the locking part 16 is held so as not to come off from the locking hole 32.

  In the clamp body 10, a plurality of ribs 12 a to 12 c are provided on the surface of the substrate 12 on the side having both the locking portions 16 in the longitudinal direction of the clamp body 10. That is, the ribs 12a are positioned at both ends of the substrate 12, the ribs 12b are positioned at both sides of the flexible portion 14, and the ribs 12c are positioned at the intermediate portions of the ribs 12a and 12b. . These ribs 12a to 12c are parallel to each other and have substantially the same amount of protrusion from the surface of the substrate 12. And the engagement piece 16b is located between rib 12a, 12c in the board | substrate 12, respectively. Further, a tape winding portion 18 is provided between the ribs 12b and 12c in the substrate 12. That is, both the tape winding parts 18 are located on both sides of the flexible part 14.

  Lock holes 32 for inserting the both lock portions 16 of the clamp body 10 are formed by drilling at two locations on the aluminum frame 30 shown in FIG. Therefore, the pitch of the both locking holes 32 and the pitch of the both locking portions 16 are set substantially equal. The drilling is a one-step process for each locking hole 32, and both the locking holes 32 are round holes (substantially round holes).

Next, a procedure for arranging the wire harness 20 with respect to the aluminum frame 30 will be described.
First, with respect to the substrate 12 of the clamp body 10, the wire harness 20 is placed along the surface opposite to the side where the both locking portions 16 are located, and the substrate 12 and the wire harness 20 are located at the locations of the two tape winding portions 18. Together with tape 22. Thereby, the clamp main body 10 and the wire harness 20 are each fixed on both sides of the flexible portion 14. Since each tape 22 is wound between the ribs 12b and 12c in the substrate 12, the tape 22 can be prevented from moving in the longitudinal direction of the substrate 12.

  Next, the both locking portions 16 of the clamp body 10 are inserted into the both locking holes 32 of the aluminum frame 30 until the ribs 12a to 12c of the substrate 12 contact the aluminum frame 30 (FIG. 2). Thereby, as already described, the plurality of engaging pieces 16 b in the both locking portions 16 are locked to the edges of the locking holes 32. Therefore, both the locking portions 16 are held so as not to come out of the respective locking holes 32, and the wire harness 20 is attached to the aluminum frame 30 via the clamp body 10. Incidentally, a large burr is generally generated at the edge of the locking hole 32 opened by drilling. However, the engagement of the plurality of engagement pieces 16b with the edge of the locking hole 32 is maintained in an appropriate state without being significantly affected by the burr.

  Thus, by inserting the two locking portions 16 into the two locking holes 32 and attaching the clamp body 10 to the aluminum frame 30, the clamp body 10 is prevented from rotating even if the locking hole 32 is a round hole. Then, the wiring route of the wire harness 20 is maintained as scheduled. Further, since the both locking portions 16 of the clamp body 10 are located on both sides of the flexible portion 14, even if there is a variation in pitch between the both locking holes 32 of the aluminum frame 30, for example, this is absorbed. Thus, both the locking portions 16 can be properly inserted into the both locking holes 32 without difficulty. For the same reason, even when the aluminum frame 30 has some steps or is curved, both the locking portions 16 can be inserted into the both locking holes 32 by absorbing this.

  FIG. 3 is an explanatory view showing an example of use of a wire harness clamp different from FIG. 2. In this drawing, the case where the wire harness 20 is routed following the right-angled corner of the aluminum frame 30 is shown. In this case, both the locking holes 32 of the aluminum frame 30 are opened on both side surfaces sandwiching the right angle corner. In order to insert the both locking portions 16 of the clamp body 10 into the both locking holes 32, the flexible portion 14 of the clamp body 10 is aligned with the right-angled corner of the aluminum frame 30, and the substrate 12 is wired by the elasticity of the flexible portion 14. Bend with harness 20. In a state where both the locking portions 16 are inserted into the respective locking holes 32, the wire harness 20 is attached following the right angle corner of the aluminum frame 30 via the clamp body 10.

External perspective view showing clamp for wire harness Explanatory drawing showing one usage example of clamp for wire harness Explanatory drawing showing the usage example of the clamp for wire harnesses different from FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Clamp body 14 Flexible part 16 Locking part 20 Wire harness 30 Aluminum frame 32 Locking hole

Claims (2)

By inserting a locking part formed integrally protruding from the clamp body to which the wire harness is fixed, into the locking hole opened in the aluminum frame of the vehicle, the wire harness is attached to the aluminum frame via this clamp body. A wire harness clamp that is held in a wired state,
The clamp body is provided with a flexible portion that can be elastically deformed in the expansion / contraction direction and the bending direction at an intermediate portion along the length direction of the wire harness, and on both sides of the flexible portion, two aluminum frames are provided. Wire harness clamps each provided with a locking portion for being individually inserted into a locking hole opened at a location. The wire harness clamp according to claim 1,
The clamp body is a clamp for a wire harness provided with a tape winding portion for fixing the wire harness by tape winding on both sides of the flexible portion.

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