JP2018122804A - Power line fixation structure for in-wheel motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power line fixation structure for an in-wheel motor capable of reducing bending-extension of a power line in steered time, capable of reducing stress by turning-bending to the power line, providing the effect for improving durability of the power line and capable of facilitating wiring work.SOLUTION: A junction box is installed in a part for turning by steering in a suspension device. A power line is divided in the length direction into a first power line A and a second power line B, and the first power line A is connected to an in-wheel motor driving device 1 on one end, and is connected to the junction box on the other end. The second power line B is connected to the junction box on one end, and is connected to an inverter device 2 on the other end. Both the first and second power lines A and B are connected from below to the junction box.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an in-wheel motor power line fixing structure that fixes a power line connected between an in-wheel motor driving device and an inverter device that controls the in-wheel motor driving device.

  In the strut suspension structure, as shown in FIG. 13, the power line 72 and the signal line 73 fixed to the case of the in-wheel motor drive device 71 are on the same horizontal plane as the fixing point 74 for fixing these lines 72 and 73. By bending the U-shape and supporting the subsequent portions 72a and 73a of the lines 72 and 73 with a holding portion 75 that can be rotated in the vertical direction provided in the vehicle structure, A technique has been proposed in which the load applied to the wiring 72 by the vertical movement is reduced and the durability is increased (for example, Patent Document 1).

Japanese Patent No. 4628136

  The power line used for the in-wheel motor drive device must have a large wire diameter because a large current flows, but when it is mounted on a steered wheel, the relative power between the vehicle body and the in-hole motor when the vehicle is running Since the turning bending force is applied to the power line due to the displacement, there is a possibility that problems such as cable disconnection may occur due to long-term operation.

For this reason, in Document 1, a holding portion 75 that can be rotated in the vertical direction is provided between a fixing portion 74 on the in-wheel motor drive device side and a fixing portion (not shown) on the vehicle main body side. A structure for reducing the load of the vertical movement on the power line 72 by displacing the holding part 75 up and down from the intermediate part of the power line 72 and the signal line 73 so as to follow the vertical relative displacement of the driving device. It has become.
That is, the intermediate point of the power line 72 and the signal line 73 is held, and the holding part 75 can be turned in accordance with the vertical movement of the suspension to cope with the vertical displacement, and with respect to the movement in the turning direction. Has a structure that improves bending durability by giving slack in the horizontal direction and expanding and contracting the slack portion.

  However, in the structure shown in the figure, since a large bending force is applied to the root portion of the boundary between the intermediate holding portion 75 and the release portion with respect to the holding portion 75, there is a risk of disconnection at the root portion in a long-term operation. . In addition, for the U-shaped portion where the horizontal rotation direction force by turning is provided on the same horizontal plane, the bending force concentrates on the root portion that bends from the intermediate holding portion 75 of the power line 72 to the U-shape, leading to disconnection. Is concerned.

  The object of the present invention is to reduce the bending and stretching of the power line at the time of turning, to reduce the stress caused by turning and bending to the power line, to obtain the effect of improving the durability of the power line, and to facilitate the wiring work It is to provide a power line fixing structure for an in-wheel motor that can achieve the above.

In the first in-wheel motor power line fixing structure according to the present invention, an in-wheel motor drive device that has a motor and a wheel bearing and is arranged inside the wheel can be steered about a turning axis extending in the vertical direction. As described above, the power line fixing for the in-wheel motor, which is connected to the vehicle body by the suspension device and fixes a plurality of power lines connecting the in-wheel motor driving device and the inverter device that controls the driving of the in-wheel motor driving device. Structure,
A junction box is installed at a portion of the suspension device that turns by turning, the power line is divided into a first power line and a second power line in the length direction, and the first power line has one end. Is connected to the in-wheel motor drive device, the other end is connected to the junction box, one end of the second power line is connected to the junction box, and the other end is electrically connected to the inverter device. It is characterized by.

According to this configuration, the power line is divided into the first power line and the second power line, and the junction box is interposed. The second power line is not in a state of being firmly fixed to the vehicle body, but can be in a state of being connected in a state in which the U-shape is sufficiently slackened. Therefore, due to the expansion and contraction of the U-shaped width and depth of the slack portion with respect to the left and right tensile force and the vertical displacement of the suspension, it is avoided that the turning bending force is concentrated on a specific part of the power line. Is done. That is, even if a turning pulling force is applied to the second power line in the vehicle width direction by turning or the like, the force is received by the entire U-shaped slack, so that stress is not concentrated on a part of the power line. And durability is improved. About the 1st power line, since the junction box is installed in the part which turns by turning like the in-wheel motor drive device in the suspension, bending force and pulling force due to turning and vertical movement are not applied, and durability Sexual problems do not occur.
Further, since the direction of the power line is changed using a junction box instead of bending the power line, wiring can be easily performed without imposing a burden on the power line.

In the present invention, the first and second power lines may be connected to the junction box from below.
In this way, the power line is divided into the first power line and the second power line, and the junction box is interposed, and the first and second power lines are below the junction box. It is easy to install the position of the junction box high, the fixed position to the movable side part by turning the power line is high, and the U shape has a large slack. It becomes even easier. Therefore, the durability improvement effect of the power line becomes more excellent.

In the present invention, the junction box may be a height position located in the vicinity below the spring seat in the suspension device, and the power line may be slacked in a U shape.
By lifting the junction box up to the vicinity of the spring seat, the U-shaped slack can be made as large as possible for the second power line, and the stress acting on the power line can be further dispersed, resulting in higher durability. improves. Moreover, since the junction box is located below the spring seat, it can be easily attached to the suspension.

In the present invention, the outer shape of the inner portion of the junction box in the vehicle width direction may have an arcuate horizontal cross section.
Since the junction box is fixed to the turning shaft, it rotates together with the turning of the wheels. For this reason, if the offset from the turning center is made as small as possible, interference with the inner surface of the wheel house or the like can be suppressed. By making the outer surface of the junction box arc, the offset from the turning center can be made as small as possible, and interference with the surroundings can be avoided.

In this invention, the junction box includes a box body provided with a terminal portion for connecting the power line, and a saddle-like member that is attached to the box body and that clamps and fixes the struts of the suspension device. It may be.
By attaching the junction box by holding the outer periphery of the suspension strut with a saddle-like member and fixing it, the junction box can be easily attached to the suspension.

In the present invention, the second power line is fixed to the vehicle body by a vehicle body fixing portion on the inverter device side from the middle, and a portion between the vehicle body fixing portion and the junction box is loosened in the U shape. May be.
By providing the vehicle body fixing portion, stress due to turning or vertical movement does not act on the connection portion between the second power line and the inverter device, thereby preventing connection failure.

In the present invention, the junction box may be positioned below a spring seat in the suspension device, and the entire junction box may be accommodated in a projection region extending in parallel to the turning axis of the spring seat.
If the junction box is accommodated in the projection area, it will not interfere with the vehicle body even if the suspension device expands and contracts.

In the second power line fixing structure for an in-wheel motor according to the present invention, the in-wheel motor drive device that has a motor and a wheel bearing and is arranged inside the wheel can be steered around a turning axis extending in the vertical direction. As described above, the power line fixing for the in-wheel motor, which is connected to the vehicle body by the suspension device and fixes a plurality of power lines connecting the in-wheel motor driving device and the inverter device that controls the driving of the in-wheel motor driving device. Structure,
The in-wheel motor drive device has a power line terminal box that protrudes upward to the vicinity of a spring seat in the suspension device, and an end of the power line is connected to the power line terminal end from below.

  Thus, if the position of the terminal box of the in-wheel motor drive device is lifted to the vicinity of the spring of the suspension device, the U-shaped slack of the power line can be increased. Therefore, even without providing a junction box, it is possible to reduce the bending and stretching of the power line at the time of turning, to reduce the stress caused by turning and bending the power line, and to improve the durability of the power line and to obtain wiring. It becomes possible to facilitate the work.

  In the first in-wheel motor power line fixing structure according to the present invention, an in-wheel motor drive device that has a motor and a wheel bearing and is arranged inside the wheel can be steered about a turning axis extending in the vertical direction. As described above, the power line fixing for the in-wheel motor, which is connected to the vehicle body by the suspension device and fixes a plurality of power lines connecting the in-wheel motor driving device and the inverter device that controls the driving of the in-wheel motor driving device. A junction box is installed at a portion that turns by turning in the suspension device, and the power line is divided into a first power line and a second power line in the length direction, and the first The power line has one end connected to the in-wheel motor drive device and the other end connected to the junction box. Since one end of the force line is connected to the junction box and the other end is electrically connected to the inverter device, the bending of the power line during turning can be reduced, and the stress caused by turning bending on the power line can be reduced. Thus, the effect of improving the durability of the power line can be obtained, and the wiring work can be facilitated.

  In a second power line fixing structure for an in-wheel motor according to the present invention, the in-wheel motor drive device has a power line terminal box protruding upward to the vicinity of a spring seat in the suspension device. Since the end of the power line is connected from below, the bending of the power line at the time of turning can be reduced, the stress caused by turning bending on the power line can be reduced, and the durability of the power line can be improved. As a result, the wiring work can be facilitated.

It is a front view which shows the power line fixing structure for in-wheel motors which concerns on 1st Embodiment of this invention with a wheel. It is the side view which looked at the suspension of the power line fixed structure for the in-wheel motor from the inner side in the vehicle width direction. It is a top view of the suspension. It is a front view of the power line fixing structure for the in-wheel motor. It is a front view of the 2nd power line in the power line fixed structure for in-wheel motors It is a bottom view of the junction box in the power line fixed structure for the in-wheel motor. It is a vertical sectional view of the junction box. It is a vertical sectional view of a modification of the junction box in the power line fixing structure for the in-wheel motor. It is a vertical sectional view of another modification of the junction box. It is a vertical sectional view of still another modification of the junction box. It is a bottom view of the other modification of a junction box. It is a front view of the power line fixing structure for in-wheel motors concerning other embodiments of this invention. It is a perspective view of a prior art example.

  A first embodiment of the present invention will be described with reference to FIGS. This in-wheel motor power line fixing structure is a structure for fixing a plurality of power lines 3 that connect the in-wheel motor driving device 1 and the inverter device 2 that drives the in-wheel motor driving device 1. The in-wheel motor drive device 1 is connected to the vehicle body 5 by a suspension device 4 so that the in-wheel motor drive device 1 can be steered around a turning axis K extending in the vertical direction. The inverter device 2 is installed in a hood on the vehicle body 5 or the like.

A junction box 8 is installed at a portion below the coil spring 34 in the suspension device 4. Specifically, the junction box 8 is attached to the cylinder portion 32a of the strut 32 in the suspension device 4 with a saddle-like member 42, as will be described later with reference to FIG.
The power line 3 is divided into a first power line A and a second power line B in the longitudinal direction. One end of the first power line A is connected to a terminal box 7 provided at the upper part of the inner end in the vehicle width direction of the in-wheel motor drive device 1, and the other end is connected to the junction box 8. The second power line B has one end connected to the junction box 8 and the other end electrically connected to the inverter device 2. The other end of the second power line B is directly connected to the inverter device 2 in this example, but it may be electrically connected even if it is not directly connected.
Since the signal line (not shown) is relatively flexible, it may be positioned along the power line 3 or separately from the power line 3.

  In each of the first and second power lines A and B, the conductor portion is a cable made of a stranded wire such as a composite stranded wire, and the outer periphery is covered with a sheath. The first and second power lines A and B are provided for each of the phases U, V, and W of the three-phase current, and there are three.

  The second power line B is fixed to the vehicle body 5 by the vehicle body fixing portion 9 on the inverter device 1 side from the middle, and the portion between the vehicle body fixing portion 9 and the junction box 8 is loosened in the U shape. It is. The vehicle body fixing portion 9 is a member that fixes the second power line B to the vehicle body 5 by holding the second power line B by pinching or pressing it against the vehicle body 5. In the illustrated example, the portion of the second power line B closer to the inverter device 2 than the vehicle body fixing portion 9 is bent in the vicinity of the fixing portion by the vehicle body fixing portion 9 and extends substantially horizontally to the side surface of the inverter device 2. Is connected to each terminal provided on the terminal.

  The in-wheel motor drive device 1 includes a wheel bearing 27 that rotatably supports a wheel 21 on an axle 26, an electric motor 28, and a rotating wheel of the wheel bearing 27 by reducing the rotation of the electric motor 28 (see FIG. (Not shown) and a reduction gear 29 that transmits to each other. In this example, the axle 26 is a fixed shaft, the rotating wheel of the wheel bearing 27 is an outer ring, and the wheel W of the wheel 21 is attached to the outer ring. The wheel 21 includes the wheel W and the tire T. The electric motor 28 is a three-phase AC motor such as a synchronous motor or an induction motor.

  The suspension device 4 is a strut suspension device, and includes a lower arm 31 that extends in the vehicle width direction and a strut 32 that is disposed above and extends in the vertical direction. The strut 32 is disposed on the inner side in the vehicle width direction with respect to the wheel 21 and the in-wheel motor driving device 1, the lower end of the strut 32 is coupled to the in-wheel motor driving device 1, and the upper end of the strut 32 is above the wheel 21. Connected to the vehicle body 5. The upper part of the wheel 21 and the upper part of the in-wheel motor drive device 1 are accommodated in a wheel house 23 formed outside the vehicle body 5 in the vehicle width direction.

  The strut 32 has a cylinder portion 32a and a rod portion 32b that is slidably accommodated in the cylinder portion 32a and protrudes upward. It is. A coil spring 34 indicated by a one-dot chain line in the figure is provided on the outer periphery of the shock absorber 33, and the shock absorber 33 and the coil spring 34 support the in-wheel motor drive device 1 so as to be able to absorb vibration in the vertical direction. To do. The lower end of the coil spring 34 is received by a lower spring seat 39b fixed to the cylinder portion of the strut 32, and the upper end is received by an upper spring seat 39a fixed to the outer periphery of the telescopic rod portion 32a of the strut 32. It is done.

  The lower arm 31 is a suspension member disposed below the axis O of the in-wheel motor drive device 1, and is an in-wheel via a ball joint (not shown) at a vehicle width direction outer end 31 a (FIG. 2). It is connected to the motor drive device 1, and is connected to the vehicle body 5 via vehicle body side members (not shown) at two vehicle width direction inner ends 31b and 31c. The lower arm 31 can swing in the vertical direction with the vehicle width direction inner ends 31b and 31c as base ends and the vehicle width direction outer end 31a as free ends.

  A tie rod 35 is disposed above the lower arm 31. The tie rod 35 extends in the vehicle width direction, and the outer end in the vehicle width direction is connected to the in-wheel motor drive device 1 so as to be rotatable. The inner end of the tie rod 35 in the vehicle width direction is connected to a steering device (not shown). This steering device moves the tie rod 35 forward and backward in the vehicle width direction to steer the wheel 21 together with the in-wheel motor drive device 1 around the turning axis K (FIG. 4).

  The suspension device 4 has a structure that can be expanded and contracted in the direction of the turning axis K. In FIG. 4, the projection area E of the lower spring seat 39 b is indicated by a one-dot chain line. If the junction box 8 is within the projection area E, the suspension device 4 will not interfere with the vehicle body 5 even if the suspension device 4 expands and contracts. For this reason, it is preferable that the junction box 8 and the power line terminal box 7 installed in the vicinity of the spring seat 39b are entirely accommodated in the projection area E.

As shown in FIG. 6, the junction box 8 includes a rectangular parallelepiped box body 43, a box cover 41, and a saddle-shaped member 42. As shown in FIG. 7, the box main body 43 has a first terminal portion 44 a that connects the first power line A and a second terminal that connects the second power line B to a terminal base 49 made of resin or the like. There are a total of six portions 44b, three each. These terminal portions 44a and 44b are both ends of the three bus bars 44 and are electrically connected to each other. The three bus bars 44 are U-shaped and are located inside and outside each other, and the six terminal portions 44a and 44b are arranged in a straight line in a line.

The box main body 43 is covered with a box cover 41, and the first and second power lines A and B are inserted into power line insertion holes provided in the lower surface of the box main body 43, and each pole at the end thereof. connection terminals _{45 (U a, V a,} W a, U B, V B, W B) is, the respective terminal portions 44a, are connected is bolted to 44b. The power lines A and B are individually fixed to the box body 43 with fasteners 46 and 47 with set screws.

  Both ends of the saddle-like member 42 are fixed to the box body 43 by set screws 48 in a state where the strut 32 is sandwiched between the box body 43 and the saddle member 42.

According to this configuration, the first and second power lines A and B are short-circuited in the U, V, and W phases inside the junction box 8, and the drive current output from the inverter device 2 is the second The power line B → the junction box 8 → the first power line A is reached to reach the in-wheel motor drive device 1 and is controlled to be rotatable.
The first and second power lines A and B are connected to the junction box 8 from below, and the second power line B is not firmly fixed to the vehicle body 5 but is U-shaped. The wire is connected in a slack state. Therefore, with respect to the tensile force on the left and right and the vertical displacement of the suspension device 4, the bent portion is turned and bent to a specific part of the second power line B by expanding and contracting the U-shaped width W and depth H (see FIG. 65). It avoids concentration of force.

This will be described in detail. As shown in Patent Document 1, when a support method is adopted in which an intermediate point of one power line is supported and vertical movement by external force is supported, the power line used for the in-wheel motor is Since it is thick and the power line itself is relatively hard, the power line usually tries to maintain a straight state. If turning bending force is applied to the power line in this state, the force is received at the intermediate support point. As a result, the force to maintain the straight line of the power line itself at both roots of the support part and the intermediate support movable There is a risk that durability will be reduced by adding three forces, a force to stop the range and a turning bending force.
However, in this embodiment, even if a turning pulling force is applied to the second power line B in the vehicle width direction by turning or the like, the force is received by the entire U-shaped large slack, so the second power line B Concentration of stress can be avoided in part, and durability is improved.

  Here, the purpose of installing the junction box 8 is to wire the power line with a sufficient slack in the U shape in order to improve the durability due to the turning bending force applied to the power line 3. That is, although the power line 3 is wired downward from the fixed portion, the in-wheel motor drive device 1 is installed at a position where the wheels can be directly driven, so that the power line terminal box 7 is connected to the in-wheel motor drive device 1. Even if it is installed at the upper end, the U-shaped depth cannot be secured sufficiently. Therefore, the power line 3 connected to the power line terminal box 7 needs to be lifted from the position where the other end is lifted upward and the U-shaped depth is secured and wired downward.

  However, since the power line 3 needs to pass a large current, the wire diameter is very thick and the minimum bend R is defined. Therefore, 360 degree bending wiring work is not easy, and a load is applied to the power line 3. For this reason, the power line 3 is not bent, but the direction of the power line 3 is changed using the junction box 8, so that wiring can be easily performed without imposing a burden on the power line 3.

  The second power line B that is sufficiently slackened with a U-shape is fixed to the vehicle body 5 by the vehicle body fixing portion 9 inside the wheel house, and is connected thereto from the inverter device 2 installed in the hood or the like. For this reason, the take-out portion of the junction box 8 and the base of the vehicle body fixing portion 9 receive the turning bending force most, but the U-shaped slack is absorbed, so the durability is improved.

8 to 11 show modifications of the junction box 8, respectively.
Junction box 8 in Figure 8, the first power line A and the second of the same phase of the power line B terminal portions _{44a, 44b (U A, U} B, V A, V B, W A, W B) between Next to each other. By adopting such a configuration, the length of the bus bar 44 can be shortened compared to the junction box 8 shown in FIG. 7, and the junction box 8 can be downsized. Further, by shortening the length of the bus bar 44, it is possible to suppress heat generation from the bus bar 44.
Further, in the junction box 8 shown in FIG. 8, the lengths of the bus bars 44 of the respective phases in the junction box 8 can be made uniform, so that the electric resistances of the bus bars 44 of the respective phases can be made equal.

  The junction box 8 shown in FIG. 9 has male and female connector parts 45'a and 45'b in which the connection terminal 45 'is inserted and connected to each other for each of the six power lines A and B in the example of FIG. It is a single-wire connector type consisting of

  Instead of the single-wire connection type of FIG. 9, as shown in FIG. 10, a three-wire connection type connector 45 ″ for inserting and connecting three first power lines A and two second power lines B together. The connector 45 ″ may be composed of male and female connector parts 45 ″ a and 45 ″ b that are plugged into each other and individually connected to each other.

FIG. 11 is a view of the junction box 8 as seen from the bottom. The junction box 8A shown in the figure has an arcuate horizontal sectional shape of the outer shape of the inner portion in the vehicle width direction so as to avoid interference between the junction box 8A and the peripheral portion due to wheel steering. The other surface is provided with a fitting recess 8Aa having a semicircular cross section into which the strut 32 is fitted.
The junction box 8A is fixed to a strut 32 concentric with the turning shaft, and rotates together with the turning of the wheels 21. For this reason, if the offset from the turning center k is made as small as possible, interference with the wheel house wall surface can be suppressed. By making the outer surface of the junction box 8A arc as shown in the figure, it is possible to avoid the risk of interference with the surroundings.

  FIG. 12 shows another embodiment. In this embodiment, the in-wheel motor drive device 1 has a power line terminal box 7A protruding upward to the vicinity of the lower spring seat 39b in the suspension device 4, and the power line 3 is connected to the power line terminal end 7A. Are connected from below. Specifically, the in-wheel motor drive device 1 has a terminal block installation protrusion 51 on the upper surface of the housing, and the power line terminal box 7A is partially on the terminal block installation protrusion 51. It is installed so as to protrude inward in the vehicle width direction. In this embodiment, the junction box is not provided, and the power line 3 is provided without being divided in the length direction.

Since a normal in-wheel motor drive device is provided with a power line terminal box that hardly protrudes from the housing, connecting the power line to the power line terminal box at this position can be loosened in a U shape. The depth of the U-shaped slack cannot be secured sufficiently. However, if the power line terminal box 7A can be installed at a sufficiently high position as in this embodiment, the depth of the U-shaped slack of the power line 3 is sufficiently secured without providing the junction box 8, and the power line at the time of turning 3 can be reduced, stress due to turning and bending with respect to the power line can be reduced, the effect of improving the durability of the power line 3 can be obtained, and the wiring work can be facilitated.
Other configurations and effects in this embodiment are the same as those in the first embodiment.

In the above embodiment, the second power line 3 has a single U-shape, but a second junction box (not shown) is provided between the junction box 8 and the vehicle body fixing portion 9.
The second power line B may be divided into two power lines, and the divided power lines may be connected so as to have a slack in a U shape. In this case, the second junction box may be installed on the vehicle body 5 so as to be rotatable in a pendulum manner inside and outside in the vehicle width direction. Thereby, the turning bending force applied to the second power line B is further dispersed, and the durability is further improved.
Moreover, in each said embodiment, although the strut-type suspension was described as an example to the suspension apparatus 4, if this invention can ensure the U-shaped slack of the power line 3, this invention will be applied regardless of the form of the suspension apparatus 4. Can do.

  As mentioned above, although the form for implementing this invention based on the Example was demonstrated, embodiment disclosed here is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 ... In-wheel motor drive device 2 ... Inverter device 3 ... Power line 4 ... Suspension device 5 ... Car body 7, 7A ... Power line terminal box 8 ... Junction box 9 ... Car body fixing | fixed part 21 ... Wheel 23 ... Wheel house 27 ... For wheels Bearing 28 ... Electric motor 29 ... Reducer 31 ... Lower arm 32 ... Strut 33 ... Shock absorber 34 ... Coil springs 39a, 39b ... Spring seat 41 ... Box cover 42 ... Saddle-like member 43 ... Box body 44 ... Bus bar 44a ... First Terminal portion 44b ... second terminal portion 45 ... connecting terminal A ... first power line B ... second power line

Claims (8)

An in-wheel motor drive device that has a motor and a wheel bearing and is arranged inside the wheel is connected to the vehicle body by a suspension device so as to be steerable about a turning axis extending in the vertical direction, and drives the in-wheel motor. A power line fixing structure for an in-wheel motor for fixing a plurality of power lines connecting the inverter device for controlling the driving of the device and the in-wheel motor driving device;
A junction box is installed at a portion of the suspension device that turns by turning, the power line is divided into a first power line and a second power line in the length direction, and the first power line has one end. Is connected to the in-wheel motor drive device, the other end is connected to the junction box, one end of the second power line is connected to the junction box, and the other end is electrically connected to the inverter device. A power line fixing structure for in-wheel motors.   The power line fixing structure for an in-wheel motor according to claim 1, wherein the first and second power lines are connected to the junction box from below.   3. The power line fixing structure for an in-wheel motor according to claim 1, wherein the junction box is a height position located near a spring seat in the suspension device, and the power line is U-shaped. Power line fixing structure for in-wheel motor that is slack in shape.   The power line fixing structure for an in-wheel motor according to any one of claims 1 to 3, wherein an outer shape of an inner portion in the vehicle width direction of the junction box is an arc-shaped horizontal cross-sectional shape. Power line fixing structure.   The power line fixing structure for an in-wheel motor according to any one of claims 1 to 4, wherein the junction box includes a box body provided with a terminal portion for connecting the power line, and the box body. A power line fixing structure for an in-wheel motor including a saddle-like member that is attached and holds and fixes a strut of the suspension device.   The power line fixing structure for an in-wheel motor according to any one of claims 1 to 5, wherein the second power line is fixed to the vehicle body by a vehicle body fixing portion on the inverter device side from the middle, A power line fixing structure for an in-wheel motor in which a portion between the vehicle body fixing portion and the junction box is slackened in a U shape.   The power line fixing structure for an in-wheel motor according to any one of claims 1 to 6, wherein the junction box is positioned below a spring seat in the suspension device, and the turning axis of the spring seat is An in-wheel motor power line fixing structure in which the entire junction box is accommodated in a projection region extending in parallel. An in-wheel motor drive device that has a motor and a wheel bearing and is arranged inside the wheel is connected to the vehicle body by a suspension device so as to be steerable about a turning axis extending in the vertical direction, and drives the in-wheel motor. A power line fixing structure for an in-wheel motor for fixing a plurality of power lines connecting the inverter device for controlling the driving of the device and the in-wheel motor driving device;
The in-wheel motor drive device has a power line terminal box protruding upward to the vicinity of a spring seat in the suspension device, and an end of the power line is connected to the power line terminal end from below. A power line fixing structure for in-wheel motors.

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