JP2002220011A - Structure for laying wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance workability for laying wire harness and to prevent the wire harness projecting outside of reinforcement from interfering with electric components or the like in an instrument panel. SOLUTION: A channel 12 is formed longitudinally in a reinforcing member 11 and a harness circuit element 20 which is a protector 21 with the wire harness 50 passed therethrough is held in the channel 12. The channel 12 is formed with a rectangular cross section and the protector 21 is formed into a rectangular cylindrical shape. The channel 12 is formed by both sidewalls 14 and 14 leading to a circumferential wall 15, and by a bottom wall 13 connecting both sidewalls 14 and 14 together. A clip 41 is formed to protrude from the wall part 24 of the protector 21 and a clip hole 42 engaging the clip 41 is formed in the bottom wall 13 of the channel 12 of the reinforcing member 11. A plurality of protectors 21 are arranged in series and held in the channel 12 of the reinforcing member 11. A window part 45 is formed between the plurality of protectors 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring structure of a wire harness attached to a reinforcing member in an instrument panel of a motor vehicle, and more particularly to a wiring harness which secures a wiring path and improves workability. The present invention relates to a wiring harness wiring structure.

[0002]

2. Description of the Related Art A wire harness for supplying power to instruments and the like around an instrument panel (hereinafter referred to as "instrument panel") of an automobile is routed along a longitudinal direction of a reinforcing member such as a lean hose or a steering member. .

[0003] A wire harness in which a plurality of electric wires are bound is attached to a lean hose or the like by directly winding and fixing a binding tape, or by winding the outer periphery of a protector accommodating the wire harness with a binding band. There is a method, or a method in which a locking claw or the like protruding from the outer periphery of the protector is inserted into a locking frame such as a lean hose and fixed with a so-called one-touch operation.

The above fixing method has advantages and disadvantages. The method of directly fixing a wire harness using a binding tape and the method of fixing a protector by winding a binding band are inferior in wiring workability. However, there is a problem that the wiring work is extremely difficult in the instrument panel having a small space. The method of fixing the wire harness using the locking claws or the like can be attached with one touch, and has an advantage of excellent workability in wiring. One-touch fixing method is now widely used.

FIG. 5 shows an example in which a wire harness is attached to a conventional lean hose or the like. The trunk line 111a of the wire harness 111 is
Along the longitudinal direction (x-direction) of the camera.

[0006] The lean hose 101 is a member for reinforcing the instrument panel 130, and its main body is constituted by a rod-shaped member. At the end, a bracket 102 is provided which is attached to the vehicle body by welding or the like. Such a lean hose 101 is fixed laterally to the back side of the instrument panel 130 by bolting the bracket 102.

[0007] The instrument panel 130 is provided with meters and other instruments and various electric components (not shown). Various electrical components and the like are connected to a branch line 111b drawn from an arbitrary position of a trunk line 111a of a wire harness 111 arranged on the back side of the instrument panel 130, so that power is supplied.

[0008] The wire harness 111 is
In order to prevent the wire harness 111 from being damaged by interference with various electrical components, the wire harness 111 is protected by a protective member 11 such as a corrugated tube or a vinyl tube.
2 is applied.

[0009]

However, the types and numbers of various electric components mounted on automobiles have been dramatically increased. In particular, meters, switches, heaters, and air conditioners are provided around the instrument panel. Electrical components (not shown) such as units are densely housed, and the wiring route of the wire harness is becoming narrower. In many cases, the wiring work of the wiring harness is performed in the middle, and the narrowing of the wiring route increases the labor burden on the worker.

In the wiring structure of the wire harness 111 shown in the section of the prior art, the trunk line 111a of the wire harness 111 is fixed to the outside of the lean hose 101 and interferes with electric components in the instrument panel 130. As a result, there is a concern that damage may occur or a short circuit may occur due to biting.

Further, although the wire harness 111 is fixed to the lean hose 101 by the binding band 120, the wire harness 111 is caused by vibration of the vehicle body.
In some cases, backlash occurred in 11 and abnormal noise was generated.

Further, a branch line 111 connected to various electric components
When b increases, the wire harness 111 in which a plurality of electric wires are bundled into one becomes octopus-shaped, and there is a concern that the wire harness 111 may be entangled.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems, and has as its object to secure a routing path and improve the workability of routing a wire harness or the like. is there. Another object is to prevent a wire harness or the like protruding outside the lean hose from interfering with electrical components or the like in the instrument panel or generating rattling noise.

[0014]

To achieve the above object, the present invention relates to a wiring harness wiring structure for mounting a wire harness along a tubular reinforcing member in an instrument panel. A groove is formed in the direction, and a harness circuit body as a protector in which the wire harness is inserted is housed in the groove.

In the wire harness routing structure according to the first aspect, it is also effective that the groove is formed in a rectangular cross section, and the protector is formed in a rectangular cylindrical shape. ).

In the wire harness wiring structure according to claim 1 or 2, the groove portion is formed by both side walls following an outer peripheral wall and a bottom wall connecting the both side walls. Is also effective (claim 3).

Further, in the wiring harness wiring structure according to any one of claims 1 to 3, it is also effective that locking means is provided on the reinforcing member and the protector. 4).

5. The wire harness wiring structure according to claim 4, wherein a clip is formed to project from a wall of said protector, and is engaged with said clip on a bottom wall of said groove of said reinforcing member. It is also effective that a hole is formed (claim 5).

The wiring harness wiring structure according to any one of claims 1 to 5, wherein a plurality of the protectors are arranged in series and housed in the groove of the lean hose. Is also effective (claim 6).

Further, in the wiring harness wiring structure according to claim 6, it is also effective that a window is formed between the plurality of protectors and a branch line of the wire harness is led out from the window. (Claim 7).

The operation and effect based on the above configuration will be described below. According to the first aspect of the present invention, a plurality of electric wires, and furthermore, a wire harness in which the plurality of electric wires are bound are inserted into the protector to form a harness circuit body. It is housed in a groove formed in a part of the reinforcing member for reinforcing an article or the like in the longitudinal direction. Since the groove portion of the reinforcing member is a wiring route of the harness circuit body, the reinforcing member does not protrude outward in the radial direction. That is, since the groove is formed, the wiring harness can be routed in a narrow space in the instrument panel. Further, since the wire harness is accommodated in the groove while being inserted into the protector, it is protected from interference with the outside.

According to the second aspect of the present invention, since the protector is formed in a rectangular cylindrical shape, the electric wires and the wire harness are aligned in a line. Such a protector fits into the groove having a rectangular cross section of the reinforcing member without play. Therefore, it is possible to prevent the rattling sound and the escape of the protector due to the vibration of the vehicle body.

According to the third aspect of the present invention, the protector is inserted into the groove of the lean hose while sliding.
The protector is housed in a state where the wall portion and the side wall surface of the groove portion are in contact with each other. Therefore, since the protector does not rattle in the groove, generation of abnormal noise can be prevented.

According to the fourth aspect of the present invention, since the protector is housed and locked in the groove of the reinforcing member, the protector does not come out to the outside and interference with the outside is prevented.

According to the fifth aspect of the present invention, the clip formed on the wall of the protector is engaged with the clip hole formed on the bottom wall of the groove of the reinforcing member so that the protector can be attached to the reinforcing member with one touch. Can be fixed. Since the tip of the clip has an anchor shape, it can be smoothly inserted into the clip hole. After the clip is inserted, the pair of flexible claws are elastically returned to be hooked on the clip hole.

According to the sixth aspect of the present invention, since the wire harness is inserted through the plurality of protectors and is arranged in a bendable manner in series, even if the lean hose is not a straight body, it can follow the shape of the lean hose. A protector can be stored.

According to the seventh aspect of the present invention, the window through which the branch line of the wire harness is led is formed between the plurality of protectors in a state where the plurality of protectors are housed in the grooves of the lean hose. Therefore, it is possible to derive and position a branch line for various electric components.

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show one embodiment of a wiring harness wiring structure according to the present invention.

As shown in FIG. 1, the wiring structure of the wire harness 50 according to the present embodiment has an instrument panel (not shown).
Pipe-shaped lean hose (reinforcing member) 1 suspended inside
1 relates to a wiring structure in which a harness circuit body 20 is accommodated.

The harness circuit 20 constitutes a subunit in which a wire harness 50 in which a plurality of electric wires are bound is passed through the protector 21. This harness circuit 2
Numeral 0 is stored in a lean hose 11, which is another subunit, to constitute a lean hose unit 10.

The lean hose 11 is a long member for reinforcing the instrument panel. In the present embodiment, a stepped rod-shaped lean hose 11 which forms a hollow rod-shaped body as a whole and contracts or expands in diameter at a substantially intermediate position in the longitudinal direction (x direction).
The main part is shown. Although not shown, a bracket or the like fixed to the vehicle body with bolts or the like is provided at the end of the lean hose similarly to the lean hose described in the section of the related art. The hollow is mainly used for weight reduction.

Such a lean hose 11 is made of an alloy steel or an aluminum alloy, which is used as a normal pipe material, as a constituent material, and is formed through extrusion or the like. In addition,
When strong bending works on the lean hose 11,
It may be configured as a solid cross section, or may be configured as a rod having a uniform outer diameter (not shown).

A slit groove (groove) 12 is formed on the outer peripheral surface of the lean hose 11 so as to be depressed inward in the radial direction.
The slit groove 12 is formed with a side wall 14, 14 following an arc-shaped peripheral wall 15 in a vertical cross section, and a bottom wall 13 connecting the both sides 14, 14.
And are formed in a rectangular cross section. Slit groove 12
Are opened at both ends in the longitudinal direction, so that the wire harness 50 can be inserted therethrough.

The groove depth W which is the main dimension of the slit groove 12
1 and the height H1 are determined according to the shape of the protector 21, the groove depth W1 is slightly larger than the width W2 of the protector 21, and the height H1 is larger than the height H2 of the protector 21. It is set slightly smaller.
This is to prevent the protector 21 from protruding outward in the radial direction and to hold the protector 21 so as not to come off.

A clip hole 42 is formed in the bottom wall 13 of the slit groove 12 so that the protector 21 can be pressed and attached with a so-called one-touch operation. The clip hole 42 is a through hole so that the clip 41 protruding from the wall portion 24 of the protector 21 can be inserted. The clip hole 42 is formed wider than the shaft 41b of the clip and narrower than the pair of claws 41a. A plurality of clip holes 42 are formed at predetermined intervals in the longitudinal direction of the lean hose 11.

The protector 21 is made of a synthetic resin material and is integrally formed by an injection molding method. In this embodiment, three protectors 21 are shown, but three protectors may be formed integrally. The three bodies
To supply power to various electrical components, each protector 2
This is for deriving the branch line 50b from between 1.

That is, when the three protectors 21 are stored in the lean hose 11, a window 45 is formed between the protectors 21, and a branch line 50b is led out from the window 45 to supply power to various electrical components. I am trying to supply. The lengths L1 and L2 of the window 45 are arbitrary, and are set so that the branch line 50b can be derived.

When the three protectors 21 are integrally formed, a similar function can be achieved by forming a hole or notch for leading out the branch line 50b at a required portion of the protector 21.

Each of the three protectors 21 has a rectangular tubular shape and includes a gutter-like protector body 22 and a flat protector cover 23.
It is formed in a shape corresponding to one slit groove 12.

The protector main body 22 has a wall 24 composed of a lower wall 24a and side walls 24b and 24c standing on both sides of the lower wall 24a, and has a gutter shape. The space formed by the lower wall 24a and the side walls 24b and 24c forms an electric wire housing space 25 in which the wire harness 50 is housed, and the wire harness 50 is laid down and housed.

The upper wall of the protector body 22 (hereinafter, also referred to as "protector cover") can be opened freely.
This is for accommodating the wire harness 50 from above. Both ends facing the longitudinal direction are open so that the wire harness 50 can be inserted therethrough. Here, the concept of the upper and lower sides can be changed depending on the arrangement of the protector 21, but for convenience, the upper and lower sides are distinguished by the arrangement shown in the figure.

The protector cover 23 is connected to the protector body 22 via the hinge 26 so as to be freely opened as described above. The protector cover 23 is formed in a flat plate shape so as to cover the open surface of the protector body 22. The hinge 26 is formed thinner than the surrounding wall so that the protector cover 23 can be opened and closed.

As shown in FIG. 2, the protector cover 23
At least one locking pawl 31 is formed at a required portion of the edge portion extending in the longitudinal direction of the device. A locking frame 32 having a hole for engaging with the locking claw 31 is formed on one side wall 24 b of the protector body 22. The protector body 22 and the protector cover 23 can be closed by engaging the hooking claws 31 and the hooking frames 32.

If there is a space between the wire harness 50 and the protector 21 when the protector cover 23 is closed, the wire harness 50 is displaced in the longitudinal direction and cannot be positioned. It is effective to form a spatula (not shown) by extending the lower wall 24a of the protector body 22 in the longitudinal direction. At this time, after the wire harness 50 is temporarily fixed to the protector 21, a binding tape or the like is wound around a spatula portion of the protector 21 and is permanently fixed.

In the case of the protector 21 having no protector cover 23, a binding tape or the like (not shown) is wound and fixed so that the wire harness 50 is not pulled out of the protector 21, and the slit of the lean hose 11 is fixed. It is also possible to attach to the groove 12.

The protector 21 described above is mounted along the longitudinal direction of the lean hose 11, and is not limited to a straight body.
If it is bent, it can be molded as a bent body.
At this time, since the plurality of protectors 21 are arranged in series, they are stored according to the shape of the lean hose 11. Further, the protector 21 may not be constituted by the protector body 22 and the protector cover 23 but may be integrally formed in a box shape. In this case, the wire harness 50
Instead of being housed from above, it is inserted through the openings at both ends of the protector. The cross-sectional shape of the protector 21 is not limited to a rectangular shape, but may be a circular shape or an elliptical shape.

FIGS. 3 and 4 show a state where the protector 21 is attached to the lean hose 11.
As described above, since the slit groove 12 is formed in a deep groove, the protector 21 does not protrude outward in the radial direction. Further, it is completely housed inside the slit groove 12 in the longitudinal direction. By doing so, it is possible to prevent the protector 21 from interfering with the outside.

The height dimension H1 of the slit groove 12 is
Since the protector 21 is slightly smaller than the height dimension H2 of the protector 21, the protector 21 is
Is stored in. In this case, there is an advantage that the wire harness 50 can be prevented from falling out of the protector 21 without providing the above-described hooking claw 31 and the hooking frame 32.

FIG. 4 shows an example of the locking means. As shown in the figure, the locking of the protector 21 is performed by leaning the anchor-shaped clip 41 protruding from one side wall 24c of the protector 21. Bottom wall 1 of slit groove 12 of hose 11
3 by engaging with a clip hole 42 formed in the hole 3.

The clip 41 has a pair of flexible claws 41a at the tip of the shaft 41b. Clip hole 42
At the position corresponding to the clip 41, the shaft portion 41b
It is wider and narrower than the pair of claw portions 41a, and is formed in a long hole shape. This makes it possible to absorb molding errors and positional deviations of the clip 41, and to smoothly attach the protector 21 to the lean hose 11 with one touch.

It should be noted that the present invention is not limited to the above-mentioned locking means, but to the protector 21 or the lean hose 1.
It is also possible to provide a locking projection on one of the walls and a locking recess for engaging with the locking projection on the other wall for locking.

The protector 21 attached in this manner does not protrude outward in the longitudinal direction of the lean hose, so that the protector 21 is completely housed inside the lean hose 11 and is connected to the outside in a small space in the instrument panel. Interference can be prevented.

It is to be noted that a preassembled exterior of the lean hose unit 10 composed of the harness circuit body 20 and the lean hose 11 outside the vehicle is mounted in the instrument panel.
The wiring work of the wire harness 50 can also be performed.

In this manner, in the instrument panel with a small space, the trouble of bending down and working for a long time is released, so that the workability of the wiring can be further improved, and the labor burden on the operator can be reduced. There are benefits that can be mitigated.

[0055]

As described above, according to the first aspect of the present invention, the harness circuit body, which is the protector in which the wire harness is inserted, is provided with a lean hose for reinforcing the steering in the instrument panel, various electric components, and the like. Since it is accommodated in the slit groove formed in the longitudinal direction so as not to protrude from the outside in the radial direction of the lean hose, interference between the wire harness and the outside is avoided. Further, even if the number of wires to be connected to various electrical components is increased and the wire harness becomes thicker, the wiring route can be easily secured because the wiring route is secured. Therefore, the worker can easily perform the work without taking the posture of the middle waist state for a long time, and the workability of the wiring is remarkably improved. In addition, since the periphery of the wire harness has a double structure of the protector and the lean hose, it is possible to prevent the wire harness from being damaged and broken due to biting or the like.

According to the second aspect of the present invention, since the electric wires and the wire harnesses are accommodated in the electric wire accommodating space of the rectangular tubular protector in a state of being arranged in a row, the wiring work can be performed easily. Further, since the slit groove of the lean hose is formed in a rectangular shape, the rectangular tubular protector can be fitted to the lean hose without play. Therefore, in a small space in the instrument panel, the wiring harness can be routed without being entangled, and connection to various electric components can be accurately performed. Further, generation of rattled sound can be effectively prevented.

According to the third aspect of the present invention, since the protector is stored in a state where the wall surface of the protector and the side wall surface of the groove are in contact with each other, and the protector does not rattle in the groove, generation of abnormal noise is prevented. Is done.

According to the fourth aspect of the present invention, since the protector is housed and locked in the groove of the reinforcing member, the protector does not fall out and is effectively protected from interference with the outside.

According to the fifth aspect of the present invention, the clip formed on one side surface of the protector is engaged with the clip hole formed on the bottom wall of the slit groove of the lean hose, thereby connecting the protector to the lean hose. It can be pressed and fixed with one touch. Further, since the tip of the clip has an anchor shape, it can be smoothly inserted into the clip hole. Therefore, the protector can be attached to the lean hose with one touch, and workability can be improved.

According to the sixth aspect of the present invention, since the plurality of protectors are arranged in a bendable manner in series, the protectors can be stored in accordance with the shape of the lean hose. Therefore, the effect of promoting the effect of the invention described in claim 1 can be obtained.

According to the seventh aspect of the present invention, the window for leading out the branch line drawn from the trunk of the wire harness is
Since it is formed between a plurality of protectors, it is possible to accurately position the branch line with respect to various electric components.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a wiring harness wiring structure of the present invention, showing a state before a harness circuit body is attached to a lean hose.

FIG. 2 is a perspective view showing a door open state of the protector.

FIG. 3 is an assembled perspective view showing a state after a harness circuit body is attached to a lean hose.

FIG. 4 is a cross-sectional view of the lean hose shown in FIG. 3, taken along line AA.

FIG. 5 is a perspective view showing an example of a conventional wiring harness wiring method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lean hose unit 11 Lean hose (reinforcing member) 12 Slit groove (groove) 13 Bottom wall 14 Side wall 15 Peripheral wall 20 Harness circuit body 21 Protector 22 Protector main body 23 Protector cover 24 Wall part 25 Wire accommodation space 26 Hinge 31 Hook claw 32 Hanging frame 41 Clip 42 Clip hole 50 Wire harness 50a Trunk line 50b Branch line

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02G 3/30 H02G 3/26 H 3/38 3/28 FF term (Reference) 3D044 BA03 BA08 BA12 BA14 BB01 BC07 BC21 BC30 BD13 3J001 FA18 GA06 GC04 HA08 JC03 JC13 JE05 KA19 KB01 KB02 5G357 DA06 DB03 DC12 DD02 DD06 DD14 DE02 DE05 DG05 5G363 AA11 AA16 BA02 DA13 DC02

Claims (7)

[Claims] 1. A wiring harness wiring structure for mounting a wire harness along a tubular reinforcing member in an instrument panel, wherein a groove is formed in a longitudinal direction of the reinforcing member, and the wire harness is inserted into the groove. A wiring harness wiring structure, wherein a harness circuit body serving as a protector is accommodated. 2. The wiring harness wiring structure according to claim 1, wherein said groove is formed in a rectangular cross section, and said protector is formed in a rectangular cylindrical shape. 3. The wiring harness routing structure according to claim 1, wherein the groove is formed by both side walls following the peripheral wall and a bottom wall connecting the both side walls. 4. The device according to claim 1, wherein said reinforcing member and said protector are provided with locking means.
The wiring harness routing structure according to any one of the above. 5. The clip of claim 4, wherein a clip protrudes from a wall of the protector, and a clip hole for engaging the clip is formed on a bottom wall of the groove of the reinforcing member. Wiring harness routing structure. 6. The wiring harness wiring structure according to claim 1, wherein a plurality of the protectors are arranged in series and are accommodated in the groove of the reinforcing member. . 7. The wiring harness routing structure according to claim 6, wherein a window is formed between the plurality of protectors, and a branch line of the wire harness is led out of the window.