JPH08276761A - Piping wiring structure for wheel-in-motor vehicle - Google Patents

Abstract

PURPOSE: To provide a piping wiring structure for a wheel-in-motor vehicle which enhances durability and reliability of piping and wiring to a wheel-in- motor. CONSTITUTION: In a wheel-in-motor vehicle with each wheel drivable by each oil hydraulic motor 26a, 26b mounted on each axle 25a, 25b of supporting the wheel, a hydraulic pipe 27a connected to the left side oil hydraulic motor 26a is arranged along a right side trailing arm 22b and axle beam 21 in a suspension device 20, and a hydraulic pipe 27b connected to the right side oil hydraulic motor 26b is arranged along a left side trailing arm 22a and axle beam 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piping / wiring structure for a wheel-in motor vehicle, and more particularly to a wheel-in motor vehicle which can be driven by a motor having left and right front wheels and left and right rear wheels mounted on an axle. The present invention relates to an arrangement structure of piping or wiring connected to an in-motor.

[0002]

2. Description of the Related Art Conventionally, a wheel-in motor (hereinafter referred to as W /
A hydraulic type and an electric type are known for a vehicle referred to as an IN motor. An example of a hydraulic W / IN motor vehicle is disclosed in, for example, Japanese Patent Laid-Open No. 5-38961.

The four-wheel drive vehicle of the invention disclosed in this Japanese Patent Laid-Open Publication is a liquid-operated vehicle for each of the left and right front wheels 3a, 3b driven by a main engine 1 via drive shafts 2a, 2b as shown in FIG. Attach the pressure pumps 4a, 4b,
The hydraulic motors 5a, 5 are also attached to the left and right rear wheels 6a, 6b, respectively.
The hydraulic pump and the hydraulic motor, which are diagonally opposed to each other, are connected to each other via the flow rate control valves 7a and 7b and the hydraulic circuits 8a and 8b, so that the left and right front wheels of the main engine 1 are driven. When one or both of 3a and 3b slip, a driving force is generated in the rear wheels that are diagonally opposed to the idling front wheels.

[0004]

However, the invention disclosed in the above-mentioned Japanese Patent Laid-Open Publication does not make any reference to a specific method for routing hydraulic pipes to a hydraulic W / IN motor.

By the way, in a known electric W / IN motor vehicle, the high-voltage wiring 9 for supplying electric power to the W / IN motor is connected from the axle portion (under spring) 10 to the rear side member (spring) as shown in FIG. (Upper) 11 is made by bending with a short span and a small radius of curvature.

[0006] In such an electric W / IN motor vehicle, there is a problem in that the high-voltage wiring 9 is arranged at a position where the torsional displacement is large with respect to the suspension stroke and that the tire is likely to be damaged by stones.

The object of the present invention is to solve the above-mentioned conventional problems, and it is a wheel-in motor in which the twisting displacement of the pipe wiring to the W / IN motor is small and the fluff from the tire is not easily received. To provide a piping and wiring structure for a vehicle.

[0008]

The present invention is a pipe wiring structure for a wheel-in motor vehicle, and has the following structure in order to solve the above-mentioned technical problems. That is,
A first invention is a pipe wiring structure of a wheel-in motor vehicle capable of being driven by a wheel-in motor in which each wheel is attached to an axle, and a left-side wheel that is opposed to a pipe wiring connected to the wheel-in motor that drives a right-side wheel. Arranged substantially linearly along the vehicle width direction from the side, and the pipe wiring connected to the wheel-in motor for driving the left wheel is arranged substantially linearly along the vehicle width direction from the opposite right wheel side. It is characterized by being extended and arranged.

A second aspect of the present invention is provided with a suspension device having an axle beam having left and right axles connected to both ends and left and right trailing arms attached to the axle beam, and each suspension device is attached to the axle. In a pipe wiring structure of a wheel-in motor vehicle capable of driving each wheel by a motor, a pipe wiring connected to the wheel-in motor on the right side is arranged along the trailing arm and the axle beam on the left side, and the left side Pipe wiring connected to a wheel-in motor is arranged along the trailing arm and the axle beam on the right side.

According to a third aspect of the present invention, the pipe wirings according to the second aspect of the invention are attached to a side surface on the vehicle rear side with respect to the axle beam and to a side surface on the inner side of the vehicle with respect to the trailing arm. It is characterized by being attached.

Further, the fourth invention is the above-mentioned first and second inventions.
Alternatively, in the third invention, the wheel-in motor attached to the axle is a hydraulic motor, and the pipe wiring is a hydraulic pipe.

Furthermore, the fifth invention is based on the above-mentioned first and second inventions.
In the second or third invention, the wheel-in motor attached to the axle is an electric motor, and the pipe wiring is a high-voltage electric wire.

[0013]

According to the pipe wiring structure of the wheel-in motor vehicle according to the first aspect of the present invention described above, for example, when the right wheel moves vertically (stroke) depending on the road surface condition, the wheel-in motor mounted on the axle and the wheel-in motor Stroke together with the connection of the piping wiring to the motor.
At that time, since the pipe wiring connected to the wheel-in motor extends almost straight to the opposing wheel, that is, the left wheel, it follows the stroke of the right wheel without causing an extreme bend in the pipe wiring. To do.

The piping wiring connected to the wheel-in motor that drives the left wheel also operates in exactly the same way as in the case of the right wheel described above. Further, according to the pipe wiring structure of the wheel-in motor vehicle according to the second aspect of the present invention, the pipe wiring connected to the wheel-in motor that drives the right wheel is arranged along the left trailing arm and the axle beam. On the other hand, the piping wiring connected to the motor on the left side is arranged along the trailing arm and the axle beam on the right side. As a result, the axle beam is used as a common arrangement part for each pipe wiring.

As a result, the pipe wiring leading to the axle beam extends almost straight and is connected to the wheel-in motor. Since the straight portion is relatively long, it follows the stroke of the wheel without causing an extreme bend. .

Further, in the pipe wiring structure for a wheel-in motor vehicle according to the third aspect of the present invention, each pipe wiring is attached to the side surface on the vehicle rear side for the axle beam and on the vehicle inner side surface for the trailing arm. Since it is attached, even if there is stone splash from the tire, pipe wiring is rarely hit directly because the axle beam and trailing arm serve as a shield against the stone that rises. In addition, even in a snowy area, the axle beam and the trailing arm protect the piping and wiring, which prevents snow and freezing.

Further, in the pipe wiring structure of the wheel-in motor vehicle according to the fourth aspect of the present invention, the above-described basic operation can be expected in the pipe structure of the vehicle in which the hydraulic motor is attached to the axle. Therefore, according to such a pipe wiring structure, it is possible to prevent the pipe from being damaged to the hydraulic motor.

Further, in the pipe wiring structure for a wheel-in motor vehicle according to the fifth aspect of the present invention, the above-described basic operation can be expected in the pipe wiring structure in a vehicle in which an electric motor is attached to an axle. Therefore, according to such a pipe wiring structure, damage to the high-voltage wiring to the electric motor can be prevented.

[0019]

The pipe wiring structure of a wheel-in motor vehicle according to the present invention will be described below in more detail with reference to the embodiments shown in the drawings. FIG. 1 shows a hydraulic piping structure of a wheel-in hydraulic motor vehicle which is an embodiment of a piping and wiring structure of a wheel-in motor vehicle according to the present invention. FIG. 1 is a configuration explanatory view schematically showing a state in which hydraulic piping to a hydraulic motor to be described later is arranged in a suspension device 20 on the rear side of a wheel-in motor vehicle.

The suspension device 20 shown in FIG.
Is an axle beam 21 and left and right trailing arms 22a, 22 attached to the axle beam 21.
b and a shock absorber 23 that alleviates the impact applied to the wheels from the road surface. This suspension device 20 is already well known.

As shown in FIG. 2, axles 25a and 25b for supporting the left and right wheels, in other words, the wheels 24 of the left and right wheels, are attached to both ends of the axle beam 21 of the suspension device 20, respectively. . Wheel-in hydraulic motors (hereinafter simply referred to as hydraulic motors) 26a and 26b for driving wheels are attached to the axles 25a and 25b.

High-pressure oil is supplied from a hydraulic pump (not shown) installed on the front side of the vehicle body to hydraulic motors 26a and 26b mounted on the axles 25a and 25b to drive wheels, and the hydraulic motors are again supplied to the hydraulic pumps. Will be returned. As described above, the hydraulic pipes 27a and 27 for circulating the high-pressure oil between the hydraulic motors 26a and 26b and the hydraulic pump.
For b, a pressure-resistant hose formed of a material having a relatively high rigidity is used.

In the arrangement structure of the hydraulic pipes 27a and 27b, the hydraulic pipe 27a connecting the hydraulic motor 26a attached to the left axle 25a and the hydraulic pump.
Centering on the hydraulic pump, extends from the pump to the rear of the vehicle body along the right side portion of the vehicle body, and the clamp 2 near the vehicle body attachment point 28b of the right trailing arm 22b.
It is fixed to the vehicle body by 9b.

Further, the hydraulic pipe 27a extends to the right end portion of the axle beam 21 along the side surface on the inner side of the vehicle body of the right trailing arm 22b and fixed by the clamp 30b. The hydraulic pipe 27a extends almost straight from the right end of the axle beam 21 along the side surface of the axle beam 21 on the rear side of the vehicle body.
The clamp 31 is fixed to the rear side surface of the intermediate portion 1 even at a substantially middle portion thereof.

In this way, the hydraulic pipe 27a extending along the beam 21 from the right end of the axle beam 21.
Finally reaches the hydraulic motor 26a at the other end. Assuming that the connecting portion of the hydraulic pipe 27a with the hydraulic motor 26a on the left side is the axle-side attachment point 32a (FIG. 2) of the hydraulic pipe 27a, the first vehicle-body-side attachment point seen from the axle-side attachment point 32a is almost the axle beam 21. The intermediate position is fixed by the clamp 31, the span between these two attachment points is equal to about half the length of the axle beam 21, and the hydraulic pipe 27a between them is substantially straight.

On the other hand, a hydraulic pipe 27b for supplying pressure oil to a hydraulic motor 26b attached to the right axle 25b.
Are arranged at positions completely opposite to those of the hydraulic pipe 27a described above. That is, the hydraulic pipe 27b for supplying pressure oil to the hydraulic motor 26b is extended from the hydraulic pump to the rear of the vehicle body along the left side portion of the vehicle body, and the left trailing arm 2 is provided.
It is fixed to the vehicle body by a clamp 29a near the vehicle body attachment point 28a of 2a.

Further, the hydraulic pipe 27b extends along the side surface of the left-hand side trailing arm 22a on the inner side of the vehicle body and is fixed by the clamp 30a to the left end portion of the axle beam 21. The hydraulic pipe 27b extends substantially straight from the left end portion of the axle beam 21 along the side surface of the axle beam 21 on the rear side of the vehicle body.
Around the middle portion of 1, the same clamp 31 fixed to the hydraulic pipe 27a is bundled together and fixed to the rear side surface thereof.

In this way, the hydraulic pipe 27b extending along the beam 21 from the left end of the axle beam 21.
Is finally connected to the hydraulic motor 26b at the other end. Therefore, assuming that the connecting portion between the other end of the hydraulic pipe 27b and the left hydraulic motor 26b is the axle-side attachment point of the hydraulic pipe 27a, the first vehicle-body-side attachment point seen from this axle-side attachment point is approximately the middle of the axle beam 21. The position between the mounting points is fixed by the clamp 31, and the span between these two mounting points is equal to about half the length of the axle beam 21 just as in the case of the hydraulic pipe 27a described above, and the hydraulic pipe 27ba between them is substantially straight. Has become.

According to the hydraulic piping wiring structure of the wheel-in hydraulic motor vehicle according to the present embodiment having the above-described structure, when the wheel strokes up and down depending on the road surface condition, for example, the hydraulic motor 26a attached to the axle 25a and the hydraulic motor 26a. The hydraulic pipe connection to the hydraulic motor 26a, that is, the axle side attachment point 32a of the hydraulic pipe 27a also strokes.

Hydraulic pipe 2 connected to the hydraulic motor 26a
Since 7a extends almost straight from the axle-side attachment point 32a along the axle beam 21 and is fixed first by the clamp 31 at approximately the middle portion of the axle beam 21, the axle-side attachment point 32a and the first portion 7a The span between the vehicle body side attachment point (fixed portion by the clamp 31) is very long, and is substantially straight.

Therefore, even if the axle side attachment point 32a of the hydraulic pipe 27a strokes together with the axle 25a, the pipe wiring 27a is not excessively bent, and the stroke of the wheel is reasonably followed. Further, regarding the hydraulic pipe 27b connected to the other hydraulic motor 26b,
This is exactly the same as the above-described movement of the hydraulic pipe 27a due to the stroke of the wheels.

As a result, the deformation of the hydraulic pipes 27a and 27b due to the suspension stroke can be made extremely small. Also, each hydraulic pipe 27
Although a and 27b are bent by approximately 90 degrees between the trailing arms 22a and 22b and the axle beam 21, the bending portions 33a and 33b of the hydraulic pipe here can have a large curvature.

Further, in the hydraulic pipes 27a and 27b leading to the hydraulic motors 26a and 26b, the pipe portion passing along the trailing arms 22a and 22b is located on the inner side surface of the trailing arm or the axle beam 2.
1 is the axle beam 21
Since it is located on the side surface on the rear side of the vehicle body, even if there is stone splash from the wheel, the axle beam 21 and the trailing arms 22a and 22b serve as a shield against the stone that rises up, and therefore there is almost no direct hit. The damage caused by this can be prevented, and the axle beam 21 and the trailing arms 22a and 22b protect the pipe wiring even in a snowy area, and it can be expected to prevent snow and icing. .

In addition, the mounting points of the hydraulic pipes 27a and 27b to the vehicle body are located near the vehicle body mounting portions of the trailing arms 22a and 22b, so that the trailing arms 22a and 22b are attached to the vehicle body mounting portions. Only a slight rotation occurs when swinging around the center of the cylinder, no vertical, horizontal, and front-rear displacement occurs. Therefore, relative displacement of the hydraulic pipe with respect to the vehicle body can be minimized.

In the above-described embodiment, the case where the hydraulic wheel-in motor is attached to the axle has been described. However, the piping and wiring structure of the present invention is not limited to this, and the electric wheel motor is used for the axle. The present invention can also be applied to a high-voltage electric wire in the case where the above is attached, and it is possible to obtain the same operation and effect as those of the hydraulic pipe as described above.

Further, in the above-described embodiment, the arrangement structure of the pipe wiring is explained for the rear wheel of the vehicle, that is, the rear wheel, but this is merely an example and the same applies to the front wheel of the vehicle. It goes without saying that piping wiring can be arranged.

[0037]

As described above, according to the pipe wiring structure of the wheel-in motor vehicle according to the first aspect of the present invention, when the wheel strokes up and down depending on the condition of the road surface, the wheel-in motor mounted on the axle and the wheel-in motor The connecting portion of the pipe wiring to the motor also strokes, and at that time, since the pipe wiring connected to the wheel-in motor extends almost straight to the opposite wheel, the pipe wiring is extremely bent. Can follow the stroke of the wheel without difficulty.

Further, according to the pipe wiring structure of the wheel-in motor vehicle according to the second aspect of the present invention, the pipe wiring connected to the wheel-in motor that drives one wheel is connected to the axle beam and the wheel forming the suspension device. Since it is arranged along the trailing arm on the side opposite to, the axle beam can be effectively used as a common arrangement portion for each pipe wiring.

In the pipe wiring structure for a wheel-in motor vehicle according to the third aspect of the invention, each pipe wiring is attached to the vehicle rear side surface for the axle beam and to the vehicle inner side surface for the trailing arm. Since it is attached, even if there is stone splash from the tire, the axle beam and trailing arm can act as a shield against stones that rise up to prevent direct hits to the piping wiring. Further, even in a snowy place, the axle beam and the trailing arm protect the pipe wiring, and it is possible to prevent snow and icing.

Furthermore, in the pipe wiring structure of the wheel-in motor vehicle according to the fourth aspect of the invention, the above-described effect can be expected in the pipe structure of the vehicle in which the hydraulic motor is attached to the axle. Therefore, according to such a pipe wiring structure, damage to the hydraulic pipe to the hydraulic motor can be prevented.

Further, in the pipe wiring structure of the wheel-in motor vehicle according to the fifth aspect of the invention, the above-described effects can be expected in the pipe wiring structure in the vehicle in which the electric motor is attached to the axle. Therefore, according to such a pipe wiring structure, it is possible to prevent damage to the high-voltage wiring to the electric motor.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view showing a hydraulic piping structure of a wheel-in motor vehicle according to an embodiment of the present invention attached to a vehicle suspension device.

FIG. 2 is a structural explanatory view showing a hydraulic motor attached to an axle supporting a wheel in the hydraulic piping structure of the wheel-in motor vehicle shown in FIG.

FIG. 3 is a structural explanatory view schematically showing a conventional four-wheel drive vehicle including a mechanism that independently drives driven wheels that are not driven by an internal combustion engine.

FIG. 4 is a partial configuration explanatory view showing a wiring state of a high voltage electric wire to an electric wheel-in motor attached to an axle supporting a wheel in a conventional electric vehicle.

[Explanation of symbols]

20 Suspension Device 21 Axle Beam 22a, 22b Trailing Arm 23 Shock Absorber 24 Wheel 25a, 25b Axle 26a, 26b Wheel-in Hydraulic Motor (Wheel-in Motor) 27a, 27b Hydraulic Piping (Piping Wiring) 28a, 28b Vehicle Body of Trailing Arm Mounting points 29a, 29b Clamps 30a, 30b Clamps 31 Clamps 32a Hydraulic pipe connection parts (axle side mounting points) 33a, 33b Hydraulic pipe bending parts

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masatsugu Owada 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd.

Claims (5)

[Claims] 1. In a pipe wiring structure of a wheel-in motor vehicle capable of being driven by a wheel-in motor in which each wheel is attached to an axle, a left-side wheel side facing a pipe wiring connected to the wheel-in motor driving a right-side wheel. Is arranged so as to extend substantially linearly along the vehicle width direction, and the pipe wiring connected to the wheel-in motor that drives the left wheel is extended substantially linearly along the vehicle width direction from the opposing right wheel side. Piping and wiring structure for wheel-in motor vehicles, which is characterized in that 2. A suspension device having an axle beam having left and right axles connected to both ends and left and right trailing arms, one end of which is attached to the axle beam and the other end of which is supported by a vehicle body. In the pipe wiring structure of a wheel-in motor vehicle capable of driving each wheel by each wheel-in motor attached to, the pipe wiring connected to the wheel-in motor on the right side is routed along the trailing arm and the axle beam on the left side. And a pipe wiring connected to the wheel-in motor on the left side is arranged along the trailing arm and the axle beam on the right side. 3. The pipe wiring is attached to a side surface on a vehicle rear side with respect to the axle beam and is attached to a side surface on an inner side of the vehicle with respect to the trailing arm. Piping wiring structure of the wheel-in motor vehicle described. 4. The wheel-in-motor vehicle pipe according to claim 1, 2 or 3, wherein the wheel-in motor attached to the axle is a hydraulic motor, and the pipe wiring is a hydraulic pipe. Wiring structure. 5. The pipe for the wheel-in motor vehicle according to claim 1, 2 or 3, wherein the wheel-in motor attached to the axle is an electric motor, and the pipe wiring is a high-voltage electric wire. Wiring structure.