Harness arrangement structure

Abstract

To provide a harness arrangement structure which prevents a harness from being sandwiched by a vehicle body member forming a vehicle during a frontal collision of the vehicle.SOLUTION: A harness arrangement structure includes: a first on-vehicle device 4 and a second on-vehicle device 5 which are disposed facing each other in a first direction; and a harness 2 arranged between the first on-vehicle device 4 and the second on-vehicle device 5. In the harness 2, a first portion 8 disposed at one side in the first direction and a second portion 9 disposed at the other side in the first direction are arranged in a state that these portions are bent in a U shape so as to extend in a second direction intersecting with the first direction within a horizontal surface. The first portion 8 and the second portion 9 are disposed at positions different from each other in a vertical direction. At least one of the first portion 8 and the second portion 9 is fixed to a vehicle body member 3.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a harness routing structure for a vehicle. [Background technology]

[0002] In vehicles such as electric vehicles (EVs), hybrid vehicles (HVs), and plug-in hybrid vehicles (PHEVs) that can be externally charged or externally powered, power is supplied by wiring a harness between a vehicle drive motor (hereinafter simply referred to as the motor) and a battery, as shown in Patent Document 1. In four-wheel drive electric vehicles in which both the front and rear wheels are driven, the battery is located below the passenger compartment, and motors are located at the front and rear of the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2023 / 144930 Summary of the Invention [Problem to be solved by the invention]

[0004] In a harness routing structure in which a harness is routed between a motor and a battery, as in Patent Document 1, the motor mounted on the front wheel may move backward in the event of a frontal collision (a collision from the front of the vehicle), which may result in a malfunction in which the harness becomes pinched between the retracted motor and a vehicle component (e.g., a floor cross member).

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a harness routing structure that prevents a harness from being pinched between vehicle body members that constitute the vehicle in the event of a frontal collision. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides: a first in-vehicle device and a second in-vehicle device arranged opposite to each other in a first direction; a harness arranged between the first in-vehicle device and the second in-vehicle device; Equipped with the harness is arranged in a U-shape by forming a first portion disposed on one side of the first direction and a second portion disposed on the other side of the first direction, each of which extends in a second direction intersecting the first direction in a horizontal plane, and a bent portion being formed between the first portion and the second portion; The first part and the second part are arranged at different positions in the vertical direction, and at least one of the first part and the second part forms a harness routing structure that is fixed to a vehicle body member (first structure).

[0007] In the first configuration, The first portion and the second portion may be arranged at different positions without overlapping in the vertical direction (second configuration).

[0008] In the first or second configuration, the first direction is a front-rear direction of the vehicle, and the second direction is a vehicle width direction, the first in-vehicle device is disposed on a front side of the vehicle, and the second in-vehicle device is disposed on a rear side of the vehicle, The second part can be configured (third configuration) to be positioned rearward in the fore-and-aft direction from the first part and positioned above the first part by being held by a support bracket attached to the body member located above the harness.

[0009] In any one of the first to third configurations, The vehicle body member may be a cross member extending in the vehicle width direction (fourth configuration).

[0010] In the configuration including the third configuration, The support bracket may be attached at a position overlapping the first on-board device in the vertical direction and the vehicle width direction (fifth configuration).

[0011] In the configuration including the third configuration, The support bracket can be configured (sixth configuration) as an L-shaped member in side view, having a first extension portion attached to the vehicle body member and extending in the fore-and-aft direction, and a second extension portion extending downward from the first extension portion.

[0012] In the sixth configuration, The second extending portion may be configured to have a flat plate shape, and the plate surface may be disposed so as to face the first in-vehicle device in the front-rear direction (seventh configuration).

[0013] In the configuration including the third configuration, The second portion may be located lower than the upper end of the first in-vehicle device (eighth configuration).

[0014] In all of the first to eighth configurations, The first in-vehicle device may be a vehicle drive motor, and the second in-vehicle device may be a battery (ninth configuration). [Effects of the Invention]

[0015] In this invention, the first and second parts of the harness, which is bent in a U-shape and routed between onboard equipment, are positioned at different positions in the vertical direction, and at least one of them is fixed to a vehicle body member.This prevents the first and second parts from interfering with each other in the same horizontal plane during a frontal collision, and also prevents the harness, at least a portion of which is fixed to a vehicle body member, from being pinched by the vehicle body member. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a bottom view showing an embodiment of a harness routing structure according to the present invention; [Figure 2] 2 is an enlarged bottom view of the harness routing structure shown in FIG. 1. [Figure 3] FIG. 2 is a side view of the harness routing structure shown in FIG. 1 as seen from the left. [Figure 4] 2 is a side view of the harness routing structure shown in FIG. 1 as viewed from the right. [Figure 5] 2 is a perspective view of the harness routing structure shown in FIG. 1 as seen from behind. [Figure 6] 2 is a perspective view of a support bracket used in the harness routing structure shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of a harness routing structure 1 according to the present invention will be described with reference to the drawings. The harness routing structure 1 is a structure for preventing a problem in which a harness 2 is pinched between a vehicle body member 3 when the vehicle body is deformed due to a front collision or the like, and includes, as shown in Fig. 1 to Fig. 5, a front wheel motor as a first in-vehicle device 4 (hereinafter, designated by the same reference numeral as the first in-vehicle device 4) and a battery as a second in-vehicle device 5 (hereinafter, designated by the same reference numeral as the second in-vehicle device 5) that are arranged opposite to each other in a front-to-rear direction of the vehicle as a first direction, and a harness 2 routed between the motor 4 and the battery 5.

[0018] The following description will be based on a four-wheel drive electric vehicle (EV) in which a drive motor 4 is provided on each of the front and rear wheels, but the harness routing structure 1 of the present invention can also be widely applied to vehicles that have a motor 4 as a drive source, such as hybrid vehicles (HV) and plug-in hybrid vehicles (PHEV) that can be externally charged and externally powered.

[0019] The motor 4 on the front wheel 6 side is disposed inside a suspension cross member 7 that is arranged in a grid pattern in a plan view near the front wheel 6 at the front side of the vehicle. The battery 5 is disposed at the bottom of the passenger compartment, rearward of the motor 4.

[0020] The harness 2 is a high-voltage power line surrounded by a protective tube, and has a first portion 8 disposed on the front side in the longitudinal direction and a second portion 9 disposed on the rear side in the longitudinal direction. The first portion 8 and the second portion 9 extend in the vehicle width direction, which is a second direction that intersects with the longitudinal direction in the horizontal plane, and are arranged in a U-shape by forming a bent portion 10 between the first portion 8 and the second portion 9 (see FIG. 2 in particular). The first portion 8 is electrically connected to the motor 4 side, and the second portion 9 is electrically connected to the battery 5 side.

[0021] The first portion 8 and the second portion 9 are disposed (offset) at different positions from each other in the vertical direction so that the second portion 9 is located above the first portion 8. The offset between the first portion 8 and the second portion 9 is set to an extent that the first portion 8 and the second portion 9 do not overlap in the vertical direction (in this embodiment, approximately the same as the diameter of the harness 2). Note that this offset is not particularly limited as long as it is large enough to cause a vertical displacement between the first portion 8 and the second portion 9 in the event of a frontal collision of the vehicle, and it may be set to, for example, approximately half the diameter of the harness 2.

[0022] The first part 8 and the second part 9 are each provided with a ring-shaped retainer 11, and the retainer 11 provided on the first part 8 is fixed to an attachment member 12 provided on the motor 4, while the retainer 11 provided on the second part 9 is fixed to a support bracket 13 provided on a cross member (hereinafter referred to as a floor cross member as appropriate and given the same symbol as the body member 3) serving as a body member 3 located above the harness 2 and extending along the vehicle width direction.

[0023] The mounting member 12 is a member provided so as to protrude rearward from the rear end side of the motor 4, and the holder 11 is fixed to the rear end of this mounting member 12.

[0024] As shown in Figure 6, the support bracket 13 is an L-shaped member when viewed from the side, having a first extension portion 14 attached to the underside of the floor cross member 3 and extending in the fore-and-aft direction, and a second extension portion 15 extending downward from the first extension portion 14.

[0025] Both the first extension portion 14 and the second extension portion 15 are flat, and the plate surface of the second extension portion 15 (the surface normal of the second extension portion 15) is arranged to face the motor 4 in the front-to-rear direction. The vertical length of the second extension portion 15 can be determined as appropriate, but in this embodiment, the length is set so that a gap approximately equal to the diameter of the harness 2 is formed between the underside of the floor cross member 3 and the second portion 9 supported by the support bracket 13, and the upper end of the second portion 9 is positioned lower than the upper end of the motor 4 (particularly the upper end of the rear end of the motor 4).

[0026] The support bracket 13 and the motor 4 are attached in positions that overlap in the front-to-rear direction both in the vertical direction and the width direction of the vehicle, so that the support bracket 13 and the motor 4 can come into contact with each other if the motor 4 moves backward due to a frontal collision of the vehicle.

[0027] As described above, in the harness routing structure 1, the harness 2 is routed in a U-shaped bent state so that the first portion 8, which is located on the front side in the fore-and-aft direction, and the second portion 9, which is located on the rear side in the fore-and-aft direction, each extend in the vehicle width direction that intersects with the fore-and-aft direction in a horizontal plane, and the first portion 8 and the second portion 9 are offset from each other in the vertical direction so that the second portion 9 is higher than the first portion 8, and the second portion 9 is supported by a support bracket 13 provided downward on the underside of the floor cross member 3. Then, as the motor 4 moves backward due to a frontal collision of the vehicle, the first portion 8 of the harness 2 moves to slip under the second portion 9.

[0028] This prevents the first portion 8 and the second portion 9 from interfering with each other in the same horizontal plane during a frontal collision, causing problems such as a short circuit. Furthermore, because a predetermined gap is maintained between the second portion 9, which is supported by the support bracket 13 extending downward, and the floor cross member 3, even if the second portion 9 is displaced slightly upward as the first portion 8 moves under, the harness 2 (particularly the second portion 9) can be prevented from being pinched between the retracting motor 4 and the floor cross member 3.

[0029] In particular, in this embodiment, the first part 8 and the second part 9 are configured to be positioned at different positions without overlapping in the vertical direction, so that when the first part 8 slips under the second part 9, the second part 9 is less likely to lift up, thereby more reliably preventing the harness 2 from being pinched.

[0030] Furthermore, the above-mentioned harness routing structure 1 is configured such that the second part 9 is positioned rearward in the fore-and-aft direction from the first part 8 and is positioned above the first part 8 by being held by a support bracket 13 attached to the floor cross member 3 positioned above the harness 2, thereby preventing the first part 8 and the support bracket 13 from coming into contact with each other and causing damage when the motor 4 moves backward following a frontal collision.

[0031] Furthermore, in the harness routing structure 1, the support bracket 13 and the motor 4 are attached in positions that overlap in the front-to-rear direction both in the vertical direction and the vehicle width direction, so that the motor 4 is allowed to move backward to a certain extent in the event of a frontal collision, while preventing the motor 4 from moving backward too far and reaching the battery 5 due to contact between the support bracket 13 and the motor 4. Moreover, because the support bracket 13 is L-shaped in side view and the plate surface of the second extension portion 15 is positioned to face the motor 4 in the front-to-rear direction, when the motor 4 moves backward and comes into contact with the second extension portion 15, the connecting portion between the first extension portion 14 and the second extension portion 15 bends, thereby absorbing the impact of the frontal collision.

[0032] Furthermore, since the above-mentioned harness routing structure 1 has a support bracket 13 provided on the cross member 3 (floor cross member 3), which is a rigid body member 3, deformation of the first extension portion 14 of the support bracket 13 is unlikely to occur in the event of a frontal collision, and it is possible to reliably prevent the motor 4 from moving backward significantly.

[0033] Furthermore, the harness routing structure 1 is configured such that the upper end of the second portion 9 of the harness 2 is positioned lower than the upper end of the motor 4 (particularly the upper end of the rear end portion of the motor 4), so that the second portion 9 of the harness 2 is less likely to lift up when the motor 4 moves backward due to a frontal collision of the vehicle. This makes it possible to more reliably prevent the harness 2 from being pinched.

[0034] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. Therefore, the scope of the present invention is defined by the claims rather than the above description, and it is intended to include all modifications within the meaning and scope of the claims.

[0035] For example, in the above embodiment, the first in-vehicle device 4 is a motor 4 and the second in-vehicle device 5 is a battery 5, but the present invention can be applied to various in-vehicle devices as long as it can solve the problem of the present application, which is to prevent the harness 2 from being pinched between the body members 3 that constitute the vehicle in the event of a frontal collision. [Explanation of symbols]

[0036] 1. Harness routing structure 2 Harness 3 Body parts (cross members, floor cross members) 4. First vehicle equipment (motor) 5 Second vehicle equipment (battery) 6 front wheels 7 Suspension cross member 8 Part 1 9 Second part 10 Bend 11 Holder 12 Mounting material 13 Support bracket 14 First Extension Department 15 The Second Extension

Claims

1. a first in-vehicle device and a second in-vehicle device arranged opposite to each other in a first direction; a harness arranged between the first in-vehicle device and the second in-vehicle device; Equipped with the harness is arranged in a U-shape by forming a first portion disposed on one side of the first direction and a second portion disposed on the other side of the first direction, each of which extends in a second direction intersecting the first direction in a horizontal plane, and a bent portion being formed between the first portion and the second portion; A harness routing structure in which the first portion and the second portion are arranged at different positions in the vertical direction, and at least one of the first portion and the second portion is fixed to a vehicle body member.

2. 2. The harness routing structure according to claim 1, wherein the first portion and the second portion are arranged at different positions without overlapping in the vertical direction.

3. the first direction is a front-rear direction of the vehicle, and the second direction is a vehicle width direction, the first in-vehicle device is disposed on a front side of the vehicle, and the second in-vehicle device is disposed on a rear side of the vehicle, The harness routing structure according to claim 1, wherein the second portion is positioned rearward in the fore-and-aft direction from the first portion and is positioned above the first portion by being supported by a support bracket attached to the vehicle body member positioned above the harness.

4. 4. The harness routing structure according to claim 3, wherein the vehicle body member is a cross member extending in the vehicle width direction.

5. The harness routing structure according to claim 3, wherein the support bracket is attached at a position overlapping the first vehicle-mounted device in the vertical direction and the vehicle width direction.

6. 4. The harness routing structure according to claim 3, wherein the support bracket is an L-shaped member in a side view, having a first extension portion attached to the vehicle body member and extending in the fore-and-aft direction, and a second extension portion extending downward from the first extension portion.

7. The harness routing structure according to claim 6, wherein the second extending portion is flat and the plate surface thereof is disposed so as to face the first vehicle-mounted device in the front-rear direction.

8. The harness routing structure according to claim 3, wherein the second portion is positioned lower than an upper end of the first vehicle-mounted device.

9. 9. The harness routing structure according to claim 1, wherein the first vehicle-mounted device is a vehicle drive motor, and the second vehicle-mounted device is a battery.

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