JPH1080036A - Structure for absorbing dimensional tolerance of wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to easily absorb the dimensional tolerance between clamps in a wire harness provided with a protector having a clamp and a wire harness assembling clamp. SOLUTION: An armoring material 16 to provide rigidity is fitted to a wire harness W/H over a section ranging from the position of a wire harness assembling clamp 15 to a position inside a protector where it is slightly inserted from the clamp side opening of the protector 10. Also, a fixing piece 11c which protrudes is provided in the other end opening of the protector 10 to fix the wire harness by winding tape. The wire harness is made flexible inside the protector so that a dimensional tolerance can be absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crossover absorbing structure of a wire harness for an automobile, and more particularly, to a structure in which a protector is attached to a wire harness and a clamp is provided with a required distance from the protector. When the dimension between the clamp and the clamp projecting from the protector intersects with the dimension between the positions of the mounting holes provided on the vehicle body side of the automobile, the intersection can be easily absorbed when the vehicle body is mounted. It is to be.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a wire harness assembling clamp 1 for fixing a vehicle body is attached to a wire harness W / H for an automobile, and a clamp 2a is projected depending on a wiring location. The provided protector 2 may be attached to the wire harness at a required interval from the wire harness assembling clamp.

[0003] The wire harness assembling clamp 1 is composed of
The board 1a is wound around a wire harness W / H with a tape 3 and fixed. Further, the protector 2 also has fixing pieces 2b, 2c protruding at both ends, and the fixing pieces 2b, 2c and the wire harness W / H are wound and fixed with the tape 4, so that the wire harness in the protector 2 is provided. W / H
Has a constant length.

The clamp 2a of the protector 2 and the clamp 1 for assembling the wire harness are respectively inserted and locked in mounting holes provided on the vehicle body side when the vehicle is mounted, so that a dimension L between the clamps 2a and 1 is set. Needs to be matched with the dimension between the mounting holes on the vehicle body side. Normally, the dimension L between the clamps is set in consideration of the required intersection in the manufacturing process of the wire harness with reference to the pitch of the mounting holes on the vehicle body.

[0005]

The above intersection is conventionally ± 5 m.
However, the accuracy has recently been required to be improved by the automobile manufacturer, and the intersection has a range of +5 mm and −0 mm, which is a narrow range from the conventional 10 mm to 5 mm.

When the wire harness is assembled, the protector 2 and the clamp 1 are attached to the wire harness W / H on an assembly drawing plate 5, as shown in FIG. Since the wire harness assembling clamp 1 can be attached to the wire harness W / H using the jig 6, the position of the wire harness assembling clamp 1 can be as set. However, when the structure of the protector 2 is a three-dimensional structure having a bent portion, it cannot be attached to the wire harness W / H using a jig on the wire harness assembly drawing board 5. Therefore, with the positioning tape 7 wound around the wire harness W / H as a mark, the fixing pieces 2b, 2c of the protector 2 are aligned with the position of the tape 7, and the tape 4
And the protector 2 is fixed to the wire harness W / H.

[0007] According to the above method, the variation generated at the time of work becomes large, and it is not easy to keep the dimensional crossings within the range of ± 5 mm in the past, much more +5 mm,-.
It is difficult to be within the intersection of 0 mm, and there is a problem that it is not possible to cope with the required dimension intersection.

Further, even if the dimensional intersection on the wire harness side is reduced, the mounting hole pitch on the vehicle body side is +5 mm, −0 mm.
mm range is difficult,
Since the dimensional accuracy is not improved on the wire harness side and / or on the vehicle side, there may be cases where the wire harness cannot be attached to the vehicle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to be able to cope with strict crossing of dimensions.

[0010]

According to the present invention, there is provided a wire harness in which a protector provided with a clamp and a wire harness assembling clamp are attached with a gap therebetween. From the position of the wire harness assembling clamp, to the wire harness in a section from the clamp side opening of the protector to a position slightly inserted into the inside of the protector, an exterior material for providing rigidity is attached, and the other end of the protector is opened. There is provided a crossover absorbing structure of a wire harness, wherein a fixing piece is projected and fixed to a wire harness by tape winding, and the wire harness can be bent inside the protector.

With the above structure, if the dimension between the clamp protruding from the protector and the wire harness assembling clamp is different from the dimension between the mounting holes on the vehicle body side, the wire harness assembling clamp is inserted through the opening of the protector. Since the part of the wire harness exposed to the outside is attached with a rigid exterior material, it moves linearly,
The amount of deflection of the wire harness inside the protector changes, the length of the wire harness between the two clamps is adjusted, and the two clamps can be aligned with the vehicle body mounting holes. In other words, instead of fixing the wire harness and the clamp mounting position to increase the dimensional accuracy, the wire harness passing through the inside of the protector can be flexed to some extent freely, and the dimensions of the harness can be freely adjusted when the vehicle is mounted. Adjustable to absorb dimensional crossings. Moreover, since the wire harness with the exterior material attached is located from the clamp side opening of the protector to the inside of the protector, the position where the wire harness is bent is limited to the inside of the protector, and the wire harness exposed to the outside is not bent. The problem of interference between the external member and the wire harness does not occur.

In the case where the protector has a gutter shape having an upper surface opening, a tape winding portion having a U-shaped cross section is formed in the clamp side opening so that the height is larger than the diameter of the wire harness,
A tape is wound around the outer periphery of the tape winding portion, and the wire harness is slidable inside the wound tape and is not detached from the protector (claim 2).

That is, in the case where the upper surface opening of the gutter-shaped protector is closed and a lid is provided, only the wire harness is passed through the opening on the clamp side, and the wire harness does not come out of the protector, but the upper surface without the lid is provided. In the case of the opening having a gutter shape, it is necessary that the wire harness be freely moved and not be detached from the protector as the configuration of the second aspect.

The exterior material attached to the wire harness to have rigidity is a resin tube. The clamp is attached to the resin tube exteriorly mounted on the wire harness, and one end of the tube is connected to the clamp side opening of the protector. It is slightly inserted (claim 3).

As the resin tube, a thick vinyl chloride tube is preferably used. The tube has an axial slit, and is attached to a wire harness from a direction perpendicular to the axis. Instead of covering with a tube, the wire harness may be provided with rigidity by winding a tape in a half-wrap manner, or the wire harness may be provided with a rigidity by winding a tape together with a resin rod. .

The protector is suitably used in the case of a three-dimensional structure having a bent portion. That is, in the case of a protector having a three-dimensional structure, as described above, a jig cannot be used when the protector is attached to a wire harness, and it is difficult to obtain dimensional accuracy. Further, when the protector has a three-dimensional structure, the wire harness can be easily bent inside the protector, so that the dimension crossing can be easily absorbed.

[0017]

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

FIGS. 1 to 4 show a first embodiment. A protector 10 has a protector body 11 having a three-dimensional structure bent in a gutter shape having both ends opened, and a lid 1 for closing an upper surface opening thereof.
Consists of two. The protector body 11 has a flat fixing piece 11c protruding from the bottom wall 11b at one end opening 11a in the longitudinal direction thereof. A bottom wall 11b and a pair of side walls 11e are provided in the other end opening 11d which is on the clamp side for assembling the wire harness when attached to the other wire harness.
The tape winding portion 11f having a U-shaped cross section that is extended further is provided. The height H1 of the side wall of the tape winding portion 11f is larger than the diameter R of the wire harness W / H to be inserted, and lower than the height of the side wall 11e of the protector body 11. Therefore, the height of the protector main body 11 is larger than the diameter of the wire harness W / H, and there is a large gap around the wire harness passing through the inside of the protector, so that the protector can be easily bent.

The lid 12 is connected to the tip of one side of the pair of side walls 11e of the protector body by a thin hinge, and is integrally formed with the protector body 11. Further, lock portions 12a and 11g that are fixed to each other are formed at the tip of the lid 12 and the other side wall 11e of the protector body. Also,
A clamp 13 for locking the vehicle body is integrally formed on the outer surface of the bottom wall 11b of the protector body 11. The clamp 1
3 projects the shaft portion 13a from the bottom wall 11b,
Is formed in the shape of a general clamp having a blade 13b protruding from the tip of the blade.

In FIG. 1, reference numeral 15 denotes a wire harness assembling clamp, which is a flat board portion 15a, a shaft portion 15b protruding from the center of the board portion 15, and a shaft portion 15a.
This is a general structure including a blade portion 15c protruding from the front end of b.

Numeral 16 is a thick vinyl chloride resin tube having a slit 16a in the axial direction.
The slit 16a is opened so as to cover the wire harness W / H from the side to be covered.

The procedure for attaching the protector 10, the clamp 15, and the tube 16 to the wire harness W / H will be described. When the wire harness W / H is slightly loosened in the state of the wire group W that is not tape-wound, the protector 10 is Pass through the protector body 11. Next, the wire group W is wound around the fixing piece 11c of the protector body 11 with a tape 20 and fixed.

Next, a resin tube 16 is put on the wire bundle in the section from the position of the tape winding portion 11f at the other end of the protector body 11 to the position where the wire harness assembling clamp 15 is mounted. In this state, the protector body 11
The tape 21 is wound around the outer peripheral surface of the tape winding portion 11f. In a state where the tape 21 is wound, a gap 22 is provided between the tape 21 and the resin tube 16 provided in the wire harness as shown in FIG. afterwards,
Alternatively, before winding the tape 21, the lid 12 is put on the protector body 11 and locked.

Finally, a wire harness assembling clamp 1
5 is wound around the outer peripheral surface of the resin tube 16 covered with the wire bundle with a tape 23 and fixed.

As described above, the protector 10 and the clamp 1
5, the wire harness to which the tube 16 is attached is shown in FIG.
As shown in (1), the wire harness is fixed by the fixing piece 11c of the protector 10 and the clamp 15, and the dimension of the wire harness during the section Y is constant. However, protector 1
The wire harness is not fixed between the clamp 13 protruding from 0 and the wire harness assembling clamp 15, and the wire bundle W is bent inside the protector 10.
The dimensions can be adjusted. Further, since a resin tube 16 is provided on the wire harness between the protector 10 and the clamp 15, the wire harness moves linearly but does not bend.

Therefore, if the dimensions between the clamp 13 on the protector side and the clamp 15 for assembling the wire harness do not coincide with the pitch between the mounting holes 30 and 31 on the vehicle body 29 side when attaching to the automobile, FIG. As shown in the figure, the protector 10 and the wire harness are freely moved with the wire harness assembling clamp 15 aligned with the mounting hole, and the dimensions of the wire harness between the clamps 13 and 15 are adjusted.
The clamp 13 on the protector side can be aligned with the mounting hole. That is, when the dimension between the clamps 13 and 15 is smaller than the pitch between the mounting holes, the wire bundle that is slightly bent in the protector 10 can be pulled and matched. On the other hand, when the dimension between the clamps 13 and 15 is larger than the pitch between the mounting holes, the clamps 13 and 15 can be accommodated inside the protector 10 to bend and match.

FIG. 5 shows a modification of the first embodiment. Since the protector 10 has the cover 12, the wire harness can be removed from the protector without providing a tape winding portion on the clamp side opening and winding the tape. You cannot escape. Therefore, the tape winding portion to be provided in the first embodiment is omitted. The other configuration is the same as that of the first embodiment, and the description is omitted.

FIG. 6 shows a second embodiment, in which a protector 1
Numeral 0 denotes only the protector body 11 without a lid. Therefore, a tape winding portion 11f similar to that of the first embodiment is provided at the clamp side opening, and a tape 20 is formed around the tape winding portion 11f.
Is wound to prevent the bundle of wires in the protector from coming out of the protector.

Further, as a means for covering the wire harness between the protector 10 and the wire harness assembling clamp 15 to make the wire harness rigid, a tape 30 is wound around the wire harness by half-wrap winding.
In the half-wrap winding, the next tape is wound around a half width of the tape previously wound on the wire bundle. When the half-wrap winding is performed, the wire bundle is not easily bent and is held in a straight line.

The other configuration and operation of the second embodiment are the same as those of the first embodiment, and a description thereof will be omitted. Also,
As shown in FIG. 7, it is also preferable to wind the tape with the resin rod 31 attached to the wire bundle to be half-wrapped.

[0031]

As is clear from the above description, according to the present invention, the dimension between the clamp of the protector attached to the wire harness and the clamp for assembling the wire harness is equal to the pitch of the mounting holes on the vehicle body. Even if the wire harness is slightly displaced, the wire harness can be freely moved at the time of mounting the vehicle body, so that the pitch between the clamps can be easily matched with the mounting hole pitch on the vehicle body side. Therefore, the wiring harness with high accuracy can be arranged on the automobile, and the workability of attaching the wire harness to the vehicle body can be improved.

The electric wire is moved by expanding and contracting inside the protector. The wire harness at a position exposed to the outside between the protector and the clamp is linearly moved by attaching a rigid exterior material. It is possible to prevent the wire harness of the part from bending and interfering with other members.

In particular, in a protector having a three-dimensional structure having a bent portion, it is difficult to obtain the accuracy of the fixing position with the wire harness. However, in the protector having the three-dimensional structure, the amount of expansion and contraction of the wire harness inside the protector is large. This has the advantage that the present invention can be suitably applied.

[Brief description of the drawings]

FIG. 1A is a perspective view of a first embodiment of the present invention,
(B) is a perspective view of the protector.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a schematic diagram illustrating a positional relationship between a wire harness and a vehicle body mounting hole according to the first embodiment.

FIG. 4 is a perspective view for explaining the operation of the first embodiment.

FIG. 5 is a perspective view of a main part showing a modification of the first embodiment.

FIG. 6 is a perspective view of a second embodiment.

FIG. 7 is a perspective view of a main part showing a modification of the second embodiment.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a perspective view showing a conventional wire harness assembling method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Protector 11 Protector main body 11c Fixing piece 11f Tape winding part 12 Lid 13 Clamp 15 Clamp for assembling wire harness 16 Resin tube W / H Wire harness W Wire bundle

Claims (4)

[Claims] In a wire harness in which a protector provided with a clamp and a clamp for assembling a wire harness are attached at an interval, a position of the clamp for assembling the wire harness from the clamp side opening of the protector into the inside of the protector. Attach a rigid exterior material to the wire harness up to the position where it was slightly inserted, and attach a fixing piece protruding from the other end opening side of the protector to fix it around the wire harness with tape, and inside the protector, wire harness A dimension cross absorbing structure of a wire harness, characterized in that the wire harness can be bent. 2. The protector has a gutter shape having an upper surface opening.
At the clamp side opening, a tape winding portion having a U-shaped cross section is projected so that the height is larger than the diameter of the wire harness, wound around the outer periphery of the tape winding portion with tape, and the wire harness is wound inside the wound tape. The dimension cross absorbing structure of the wire harness according to claim 1, wherein the structure is slidable and is not detached from the protector. 3. An exterior material to be attached to the wire harness so as to have rigidity is made of a resin tube. The clamp is attached to the resin tube exteriorly attached to the wire harness, and one end of the tube is connected to a clamp side of the protector. The crossover absorbing structure for a wire harness according to claim 1 or 2, wherein the wire harness is slightly inserted from the opening. 4. The crossover absorbing structure for a wire harness according to claim 1, wherein the protector has a three-dimensional structure having a bent portion.