JP6353231B2 - Electric cable support structure - Google Patents

Description

The present invention relates to power the in-wheel motor drive device, or to support an electrical cable for transmitting electrical signals related to the in-wheel motor drive device in the vehicle body technique for driving the wheels.

  As a wheel drive motor, for example, an in-wheel motor drive device installed in a space area inside a road wheel of a wheel is known. Since the in-wheel motor drive device is attached to the vehicle body via the suspension device, the in-wheel motor drive device also bounces and rebounds with the wheel when the wheel bounces and rebounds. In the case of an in-wheel motor drive device provided on a wheel to be steered by a steering device or the like, the in-wheel motor drive device also steers in the left or right turning direction together with the wheel. There is known a wheel drive motor that is attached to a vehicle body so as to be relatively movable.

  An electric cable is connected to the wheel drive motor. The electric cable includes a power line through which a relatively large driving current flows and a signal line through which a relatively small signal current flows. Bending stress is repeatedly applied to the electric cable every time the wheel drive motor bounces and rebounds or turns in the left or right turning direction. However, since the power line is relatively thick, the flexibility is poor. For this reason, if the electric cable is not properly supported, local bending and friction of the electric cable occur, and the durability of the electric cable is impaired. Moreover, since the signal line is relatively thin, it is weak against tensile force. For this reason, it is necessary to support the signal line appropriately.

  In order to solve such a problem, for example, in FIG. 1 and paragraphs 0012 and 0013 of Japanese Patent Application Laid-Open No. 2010-221902 (Patent Document 1), an electric cable routed with bending between two parallel suspension arms. And a ring-shaped support portion that surrounds the outer periphery of the electric cable, and an elastic portion that fixes the support portion so as to be suspended from the vehicle body. The elastic part is constituted by an elastic body such as a resin, a spring, or a leaf spring, and the support part can be moved in any direction including the front-rear direction, the width direction, and the height direction of the vehicle body. Japanese Patent Application Laid-Open No. 2005-319904 (Patent Document 2) discloses a metal pipe that surrounds an electric cable, and a cylinder that supports the pipe with relative movement in the axial direction and without radial play. Shaped brackets are described. The bracket is fixed to the lower surface of one of the two arm portions constituting the upper arm.

Japanese Patent Laid-Open No. 2010-221902 FIG. JP 2005-319904 A

  However, the conventional support structure described above causes problems as described below. That is, in the case of Patent Document 1, only the description that the elastic portion is constituted by an elastic body such as a resin, a spring, or a leaf spring is disclosed, and no specific configuration of the elastic portion is disclosed. In the case of Patent Document 1, the elastic deformation of the elastic portion becomes too large, and the electric cable may interfere with a nearby member, for example, a suspension arm. In Patent Document 2, since the bending deformation of the electric cable is absorbed only by the relative movement of the pipe in the axial direction, the surface of the electric cable may be worn or damaged when the pipe slides with respect to the electric cable. In the case of Patent Document 2, the bracket for supporting the electric cable is fixed to the upper arm. As is clear from the fact that the upper arm is positioned below the vehicle body and outside in the vehicle width direction, Are significantly different in shape and layout. For this reason, it is difficult to attach the bracket of Patent Document 2 directly to the vehicle body.

In view of the above circumstances, an object of the present invention is to provide a support structure for an electric cable that allows slight movement of the electric cable but does not cause undesired interference. Another object of the present invention is to provide a support structure for electric cables which can be easily attached and fixed to the car body.

For this purpose, an electric cable support structure according to the present invention includes a vehicle body, an in-wheel motor drive device, one end connected to the vehicle body via a rotation axis, and the other end connected to the vehicle body via a rotation axis. Provided with a suspension arm coupled to the base, and a structure for supporting an electric cable extending from the vehicle body and connected to the in-wheel motor drive device , the clip base and a member coupled to the clip base, the clip base A clip member having a clip cover for holding an electrical cable between the base member, a base member provided on the vehicle body, a ball joint that has a spherical part and a socket part that covers the spherical part, and connects the clip base and the base member ; Is provided.

The suspension arm includes an upper arm and a lower arm, and the clip member and the ball joint are disposed above the lower arm and below the upper arm.

  According to the present invention, since the base member is provided on the vehicle body and supports the clip member so as to be swingable around the ball joint, the clip member swings in accordance with the movement of the electric cable, so that the electric cable is impossible. It is possible to avoid damaging the electric cable.

Further, since the clip member does not move greatly, the electric cable does not interfere with a nearby member. Further, by selecting the shape of the base member according to the vehicle body, the base member can be attached and fixed to various vehicle bodies.

As good preferable embodiment of the present invention, the base member includes a base base portion connected to the vehicle body, and the ball-side shaft portion to be passed through the through hole formed in the spherical portion of the ball joint projecting from the base base, through holes And a stopper portion attached and fixed to the tip end portion of the ball-side shaft portion that penetrates the through-hole larger than the cross-sectional shape. The sphere portion of the ball joint is movable along the ball side shaft portion. According to the present embodiment, a gap is provided between the stopper portion and the sphere portion, and the sphere portion can be slidably supported along the ball side shaft portion. If the support structure that firmly fixes the electric cable to the vehicle body as in the past, there is a risk that excessive stress will be applied to the electric cable during wiring work due to the accumulation of parts accuracy. For example, since the clip member is swingable and movable with respect to the vehicle body, excessive stress is not applied to the electric cable. Moreover, a portion for fixing the base member can be arranged on the vehicle body with low accuracy. As another embodiment, the spherical portion may be fixed to the ball side shaft portion.

  As a further preferred embodiment of the present invention, a male screw may be formed on the outer periphery of the tip end portion of the ball side shaft portion, and the stopper portion may be a nut that engages with the male screw of the ball side shaft portion. According to this embodiment, a connection part can be assembled easily. Further, the sliding range of the sphere portion sliding along the ball side shaft portion can be adjusted by the tightening amount of the nut.

  As one embodiment of the present invention, the socket part includes a first part having a concave spherical surface covering the convex spherical surface on one side of the spherical part, a second part having a concave spherical surface covering the convex spherical surface on the other side of the spherical part, and a first part. A screw structure for joining the part and the second part together; According to this embodiment, by tightening and rotating the screw structure, the first component and the second component pinch the spherical portion, and the frictional force between the concave spherical surface of the socket portion and the convex spherical surface of the spherical portion increases. Therefore, the frictional force becomes a resistance force against the swing of the ball joint, and the clip member can be fixed so as not to swing. Alternatively, frequent and unstable swinging of the clip member is reduced. In addition, the screw structure of the present embodiment is, for example, a female screw portion provided in one of the first component and the second component and a male screw portion provided in the remaining other component.

Structure in which the base member to the vehicle body is not particularly limited. As an embodiment of the present invention, the base member includes an engaging portion, the engaging portion is connected by the engaged portion and the snap fit provided on the car body. Or as another embodiment of the present invention, the base member has a base shaft portion extending projecting from the connecting portion, the base shaft portion, a male thread formed on its outer periphery, a female screw hole provided in the vehicle body Screw together. According to this embodiment, the work for attaching the base member to the vehicle body is facilitated.

The clip member of the present invention includes a clip cover for holding the electrical cables to and from the clip base portion a member that binds a clip base portion, a clip base portion for connecting the ball joint. According to this invention , the operation | work which attaches an electric cable to a clip member becomes easy.

  In a preferred embodiment of the present invention, the clip cover is connected to the clip base through a hinge so as to be opened and closed. According to this embodiment, the replacement work of the electric cable is facilitated.

Thus, according to the present invention, when the electric cable moves by moving the wheel drive motor together with the wheel, the clip member swings in accordance with the movement of the electric cable. Therefore, excessive force is not applied to the electric cable, damage to the electric cable can be avoided, and durability of the electric cable is improved. Further, since the clip member does not move greatly, the electric cable does not interfere with a nearby member. In addition , the electric cable can be supported at an optimum part of the vehicle body.

It is the typical front view which looked at the suspension apparatus in the vehicle front-back direction. It is an enlarged side view which shows typically the support structure of an electric cable. It is a typical side view which shows the support structure of an electric cable in detail. It is a side view which shows the state which opened the clip cover. It is a typical side view showing the state where a clip member swings. It is a typical side view showing the state where a clip member swings. It is a typical front view which shows the state which a clip member rock | fluctuates. It is a typical front view which shows the state which a clip member rock | fluctuates. It is a figure which shows the support structure of the electric cable which becomes other embodiment of this invention. It is a figure which shows the support structure of the electric cable which becomes other embodiment of this invention. It is a figure which shows the support structure of the electric cable which becomes further another embodiment of this invention. It is a figure which shows the support structure of the electric cable which becomes further another embodiment of this invention. It is a figure which shows the support structure of the electric cable which becomes further another embodiment of this invention. It is a longitudinal cross-sectional view which shows an in-wheel motor drive device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the in-wheel motor drive device 11 will be described with reference to a longitudinal sectional view shown in FIG. 14. The in-wheel motor drive device 11 includes a motor unit 11A, a speed reduction unit 11B, and a wheel hub unit 11C. The motor unit 11A, the speed reduction unit 11B, and the wheel hub unit 11C are sequentially arranged in series in the direction of the axis O of the in-wheel motor drive device 11, and are arranged coaxially. The wheel hub portion 11 </ b> C includes a hub wheel 33 that is a rotating member extending along the axis O, an inner ring 37 that is fitted to a small diameter portion of the hub wheel 33, and an outer ring member that surrounds the outer peripheral surface of the hub wheel 33 and the inner ring 37. 34 and a plurality of rolling elements 35 disposed in an annular gap between the inner peripheral surface of the outer ring member 34 and the outer peripheral surface of the hub ring 33. These hub wheel 33, inner ring 37, outer ring member 34, and a plurality of rolling elements 35 constitute an angular ball bearing (rolling bearing). And the wheel (illustration omitted) connected and fixed to the hub ring 33 via the rolling bearing is rotatably supported. A wheel (not shown) is attached and fixed to the large diameter portion of the hub wheel 33 by a bolt 36. This wheel is driven by the in-wheel motor drive device 11 to rotate. The wheel hub portion 11C and the speed reduction portion 11B of the in-wheel motor drive device 11 are installed in the space area inside the road wheel of the wheel. On the other hand, a part or the whole of the motor unit 11A is installed outside the space area inside the road wheel of the wheel. The load wheel is denoted by reference numeral 48 in FIG.

  The motor unit 11A incorporates a stator 13 of a rotating electrical machine, a rotor 14 and a motor shaft 15 inside a cylindrical motor unit casing 12 to drive the hub wheel 33 or use the rotation of the hub wheel 33 to generate electric power. Regenerate. The motor shaft 15 extends along the axis O and is coupled to the input shaft 24 of the speed reduction unit 11B. This coupling is performed by inserting the end of the input shaft 24 into one end opening of the motor shaft 15 formed in a cylindrical shape and performing spline fitting.

  The speed reduction part 11 </ b> B incorporates a speed reduction mechanism such as a cycloid speed reducer inside the cylindrical speed reduction part casing 23, and reduces the rotation of the motor part 11 </ b> A and transmits it to the hub wheel 33. The speed reduction part 11B may incorporate a planetary gear type speed reduction mechanism in addition to the illustrated cycloid speed reducer, or may be a so-called direct motor type in-wheel motor drive device having no speed reduction part. The speed reduction unit casing 23 and the motor unit casing 12 may be separate parts or may be integrated.

  Here, the case where a cycloid reducer is adopted as the speed reduction part 11B will be briefly described. The speed reduction part 11B is a speed reduction part casing 23, an input shaft 24, and a disc-shaped eccentric member provided eccentric to the input shaft 24. 25, a curved plate 26 attached to the eccentric member 25 so as to be concentric, a rolling bearing 29 provided between the outer periphery of the eccentric member 25 and the inner peripheral surface of the central hole of the curved plate 26, and a deceleration A plurality of outer pins 27 attached to the inner casing 23 via outer pin holding members 28, and a motion conversion mechanism for taking out the rotation of the curved plate 26 and outputting it to the hub wheel 33. In this embodiment, two eccentric members 25 and two curved plates 26 are provided with a phase different by 180 °.

  The outer peripheral edge of the curved plate 26 described above is formed in a wave shape and engages with a plurality of outer pins 27 attached to the speed reduction portion casing 23 via an outer pin holding member 28. The outer pins 27 are arranged at equal intervals in the circumferential direction around the axis O, and are one more than the number of wavy peaks formed on the outer peripheral edge of the curved plate 26. When the curved plate 26 which is a revolving member revolves around the axis O, the curved plate 26 rotates slightly due to the engagement with the outer pin 27.

  The motion conversion mechanism takes out the rotation of the curved plate 26 and outputs only the rotation to the hub wheel 33, and includes a plurality of through holes formed in the curved plate 26 at intervals in the circumferential direction, A plurality of inner pins 31 having an outer diameter smaller than the inner diameter of the through hole, passed through each through hole, a flange portion 32f that commonly supports one end of each inner pin 31, and a flange portion 32f are integrally formed. It has a shaft portion 32s. The flange portion 32f and the shaft portion 32s constitute the output shaft 32 of the speed reducing portion 11B. The shaft portion 32s of the output shaft 32 extends along the axis O and is coaxially coupled to the hub wheel 33 of the wheel hub portion 11C. The motor shaft 15 of the motor unit 11A, the input shaft 24 and the output shaft 32 of the speed reduction unit 11B, and the hub wheel 33 of the wheel hub unit 11C extend along the axis O, but the eccentric member 25 and the curved plate 26 extend from the axis O. It is arranged eccentrically.

  When a three-phase alternating current is passed through the coil 17 of the stator 13, the rotor 14 rotates with the motor shaft 15, and the motor unit 11A outputs rotation. The deceleration unit 11B decelerates the rotation input from the motor shaft 15 to the input shaft 24, and transmits the reduced rotation from the output shaft 32 to the wheel hub unit 11C. Energization of the stator 13 is performed by three power lines 61 (FIG. 1) described later.

  Next, a suspension device for attaching the in-wheel motor drive device 11 to the vehicle body 41 will be described with reference to FIG. FIG. 1 is a schematic front view illustrating a state in which the suspension device is viewed in the vehicle front-rear direction. The suspension device of this embodiment includes an upper arm 42 and a lower arm 43. The upper arm 42 extends in the vehicle width direction, and can swing in the vertical direction with an inner end in the vehicle width direction as a base end and an outer end in the vehicle width direction as a free end. An inner end in the vehicle width direction of the upper arm 42 is rotatably attached to the vehicle body 41 via a rotation shaft 44 extending in the vehicle front-rear direction. The outer end in the vehicle width direction of the upper arm 42 is rotatably attached to the upper portion of the motor unit casing 12 via a rotation shaft 46 extending in the vehicle front-rear direction. The lower arm 43 is basically the same as the upper arm 42, and the inner end of the lower arm 43 in the vehicle width direction is attached to the vehicle body 41 via a rotating shaft 45 extending in the vehicle front-rear direction. The direction outer end is rotatably attached to the lower part of the motor unit casing 12 via a rotation shaft 47 extending in the vehicle front-rear direction. With such a suspension device, the in-wheel motor drive device 11 can be bounced upward and rebounded downward as seen from the vehicle body 41 together with the load wheel 48 of the wheel.

  Three power lines 61 and one signal line 62 that are drawn from the vehicle body 41 and extend outward in the vehicle width direction are inserted and fixed in the terminal box 16 attached to the outer periphery of the motor casing 12. The three power lines 61 are electric cables coated with insulation corresponding to the U phase, the V phase, and the W phase, and are connected to the coil 17 (FIG. 14) wound around the stator 13 and mounted on the vehicle body 41. Electric power for driving the motor unit 11A is supplied to the coil 17 from the inverter (not shown). The signal line 62 is an electric cable in which a plurality of core wires each having an insulation coating are bundled one by one, and is connected to a rotation speed sensor 18 (FIG. 14) for detecting the rotation speed of the motor shaft 15 and other sensors (not shown). Then, an electrical signal is transmitted from these sensors to a control unit (not shown) of the vehicle body 41.

  The three power lines 61 and one signal line 62 that extend together in the vehicle width direction are flexible, and are bundled to the clip member 63 in the middle of the longitudinal direction, and are fixedly attached to the vehicle body 41. Supported by member 64. Below the upper arm 42 and above the lower arm 43, the power line 61 and the signal line 62 are bent in a region from the clip member 63 to the terminal box 16 and a region from the clip member 63 to the inverter. The clip member 63 is connected to the base member 64 via the connecting portion 70. The connection part 70 of this embodiment is a ball joint. Alternatively, other universal joints may be used. In order to facilitate understanding of the electric cable, in FIG. 1, a plurality of power lines 61 and signal lines 62 are shown in parallel with a space in the vertical direction, but the way of bundling the electric cables is not limited to this. . For example, each electric cable may face the bottom surface of the vehicle body 41 and extend in the vehicle width direction, and may be spaced in the vehicle front-rear direction.

  In FIG. 2, the clip member 63 is indicated by a virtual line, and the vehicle body 41 and the base member 64 are indicated by a solid line. The base member 64 has a base shaft portion 68 that extends from the spherical portion 66 of the connecting portion 70. The base shaft portion 68 is shown with its middle in the longitudinal direction omitted in FIG. The base shaft portion 68 may be long or short. The distal end portion of the base shaft portion 68 is formed to be tapered toward the distal end, and is widened in the opposite direction (spherical portion 66), and the groove portion is formed so as to be divided into the distal end portion. 68g is formed. The groove portion 68g is disposed between the pair of engaging claws 68n and 68n, and the pair of engaging claws 68n and 68n can be elastically deformed so as to press the groove portion 68g and approach each other.

  A through hole 41 h corresponding to the cross-sectional shape of the base shaft portion 68 is formed in the vehicle body 41. When the distal end portion of the base shaft portion 68 is pushed into the through hole 41h from the outside, a pair of tapered engagement claws 68n formed into a taper enters the through hole 41h while compressing and shrinking the groove portion 68g. When the pair of triangular engaging claws 68n penetrates the through hole 41h, the pair of triangular engaging claws 68n are elastically restored wider than the through hole 41h and do not come out of the through hole 41h. Thus, the base member 64 includes an engaging claw 68n as an engaging portion, and the engaging claw 68n is inserted into a through hole 41h as an engaged portion provided in the vehicle body 41 and connected to the vehicle body 41 by a snap fit. The The coupling between the engaging claws 68n and the through holes 41h is not released unless an abnormally large pulling force acts on the base shaft portion 68.

  3 and 4 again show the overall configuration of the clip member 63 and the base member 64. FIG. The clip member 63 includes a socket portion 65 of the connecting portion 70 that covers the spherical portion 66, a clip base portion 67 fixed to the socket portion 65, and a clip cover 69 that is openably and closably connected to the clip base portion 67 via a hinge 71. Have The clip base 67 is formed with a groove 67g having a semicircular cross section. A plurality of grooves 67g are arranged in parallel, and only one is thin and the other three are thick. The clip cover 69 covering the four grooves 67g is also formed with the same number of grooves 69g having the same thickness at positions corresponding to the grooves 67g. One side of the clip base 67 and the clip cover 69 is hinged via a hinge 71. Projections 67p and 69p are formed on the other side of the clip base 67 and the other side of the clip cover 69, respectively. A screw hole 67h and a through hole 69h are formed in each of the protrusions 67p and 69p. With the clip cover 69 closed, the bolts 72 are passed through the screw holes 67h and the through holes 69h and screwed. Thereby, the clip cover 69 is fixed to the clip base 67 in a closed state. At this time, the power lines 61 and the signal lines 62 are sandwiched between the clip base 67 and the clip cover 69 and are not displaced with respect to the clip member 63. Alternatively, the total cross-sectional shape of the grooves 67g and 69g may be formed larger than the cross-sectional shapes of the power lines 61 and the signal lines 62. In this case, each power line 61 and the signal line 62 can be slightly moved relative to the clip member 63 in the longitudinal direction thereof. When it is desired to hold the power line 61 and the signal line 62 slidably in the longitudinal direction, the clip member 63 may be formed in this way. In this case, in order to avoid the possibility that the surfaces of the power line 61 and the signal line 62 are worn or damaged, it is preferable to interpose a buffer material between the outer peripheral surface of the power line 61 and the inner peripheral surfaces of the grooves 67g and 69g. .

  As shown in FIG. 4, the clip cover 69 is opened, the power line 61 is accommodated between the paired thick groove 67g and the groove 69g, and the signal line 62 is accommodated between the paired thin groove 67g and the groove 69g. When the clip cover 69 is closed, the power line 61 and the signal line 62 are held by the clip member 63 and supported by the base member 64 as shown in FIG.

  Since the clip member 63 is provided on the base member 64 via the connecting portion 70 as a universal joint, the clip member 63 can swing around an imaginary axis that intersects the connecting portion 70. 5 and 6 show a state in which the support structure of the electric cable is viewed in the longitudinal direction (vehicle width direction) of the power line 61 and the signal line 62. FIG. The clip member 63 can swing around an imaginary axis X that intersects the connecting portion 70 and extends in the vehicle width direction. As a result, the power line 61 and the signal line 62 can move like a pendulum in a direction perpendicular to the longitudinal direction, as indicated by arrows in FIGS. 5 and 6.

  7 and 8 show a state where the support structure of the electric cable is viewed in a direction (vehicle longitudinal direction) orthogonal to the longitudinal direction of the power line 61 and the signal line 62. FIG. Further, the clip member 63 can swing around an imaginary axis Y that intersects the connecting portion 70 and extends in the vehicle front-rear direction. As a result, the power line 61 and the signal line 62 have a height position on one side in the longitudinal direction of the power line 61 and the signal line 62 and a height position on the other side in the longitudinal direction, as shown by arrows in FIGS. Can be swung so as to change upside down.

  Further, the clip member 63 can swing around an imaginary axis Z that intersects the connecting portion 70 and extends in the vertical direction. As a result, the power line 61 and the signal line 62 can swing so that the front-rear position on one side in the longitudinal direction of the power line 61 and the signal line 62 and the front-rear position on the other side in the longitudinal direction change in the front-rear direction.

  Thus, according to this embodiment, the clip member 63 can swing around a plurality of virtual axes X, Y, and Z that intersect each other. In particular, since the connecting portion 70 is a ball joint, the connecting portion 70 is not limited to the virtual axes X, Y, and Z described above, and can swing in all directions around the connecting portion 70. The swing angle of the clip member 63 is regulated within a predetermined range when the socket portion 65 of the clip member 63 contacts the base shaft portion 68 of the base member 64 as shown in FIGS. Alternatively, a restriction member that abuts on the clip member 63 may be attached to the vehicle body 41 or the like to restrict the maximum swing angle of the clip member 63.

Meanwhile, according to the support structure of the electric cable of the present embodiment includes a clip member 63 for holding the power lines 61 and the signal line 62, the connecting portion 70 for connecting the clip member 63, provided on the vehicle body 41 connected Since the base member 64 supporting the clip member 63 so as to be swingable is provided around the portion 70, the in-wheel motor drive device 11 bounces and rebounds in the vertical direction, or the in-wheel motor drive device 11 turns left and right. Thus, when the power line 61 and the signal line 62 move, the clip member 63 swings in accordance with the movement of the power line 61 and the signal line 62. Therefore, the power line 61 and the signal line 62 can be bent so as to have a reasonable posture so that no local force is applied to the power line 61 and the signal line 62. Moreover, since the clip member 63 swings but does not displace, it is possible to prevent the power line 61 and the signal line 62 from interfering with neighboring members such as the vehicle body 41, the upper arm 42, the lower arm 43, and the like.

  Next, another embodiment of the present invention will be described. FIGS. 9 and 10 are diagrams showing a structure for supporting an electric cable according to another embodiment of the present invention. In order to facilitate understanding, the vehicle body 41 and the base member 74 are indicated by solid lines, and the clip member 73 is indicated by virtual lines. . About this embodiment, about the structure which is common in embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted and a different structure is demonstrated below. The base member 74 includes a base base portion 76 fixed to the vehicle body 41, a ball side shaft portion 78 that protrudes from the base base portion 76 and passes through a through hole 66 h formed in the spherical portion 66 of the ball joint, and a through hole 66 h. A nut 80 is provided as a stopper portion that is fixedly attached to the tip of the penetrating ball side shaft portion 78. The nut 80 is a known female screw member, which is larger than the cross-sectional shape of the through-hole 66h, and is screwed into a male screw formed on the outer peripheral surface of the tip end of the ball side shaft portion 78, whereby the spherical portion 66 is ball side shaft portion 78. Keep it in place. The clip member 73 only needs to have a socket portion 75 that covers the sphere portion 66 and has means (not shown) for holding the power line 61 and the signal line 62.

Since the base base portion 76 of the base member 74 is larger than the cross-sectional shape of the through hole 66 h, the position of the spherical portion 66 is restricted between the base base portion 76 and the nut 80. When the nut 80 is tightened and the spherical portion 66 is clamped between the base base 76 and the nut 80, the spherical portion 66 is fixed to the base member 74 so as not to be relatively movable. The function in this case is the same as that of the embodiment shown in FIGS. 5 to 8 described above, and the clip member 63 can swing in all directions around the connecting portion 70.

Alternatively, as shown in FIG. 10, when the nut 80 is loosened and a gap G is provided between the nut 80 and the spherical portion 66, the spherical portion 66 moves within the gap G in the axial direction of the ball side shaft portion 78. It becomes possible. As a result, the connecting portion including the socket portion 75 can move within the gap G in the axial direction of the ball side shaft portion 78 (that is, along the imaginary axis Z), and the clip member 73 approaches or moves away from the vehicle body 41. Can be. Note that an elastic body may be interposed in the gap between the nut 80 and the spherical portion 66 in order to suppress abnormal noise when the spherical portion 66 contacts the base base 76 and the nut 80 and wobbling of the spherical portion 66 in the Z direction. . An elastic body may be interposed in the gap between the base portion 76 and the spherical portion 66.

  According to the embodiment shown in FIG. 10, the clip member 73 is not only swingable as shown in FIGS. 5 to 8, but can be moved in the axis Z direction by a distance equal to the gap G. Approach or move away.

  Next, still another embodiment of the present invention will be described. FIG. 11 is a view showing an electric cable support structure according to still another embodiment of the present invention. About this embodiment, about the structure which is common in embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted and a different structure is demonstrated below. In the embodiment of FIG. 11, the socket portion 65 is configured with a first component 65 a, a second component 65 b, and a screw structure that couples the first component and the second component to each other. The first component 65a is a ring member having a central hole 65h through which the base shaft portion 68 passes, and is formed so as to be concentric with the concave spherical surface 65c formed on the inner peripheral wall surface of the central hole 65h. And an internal thread portion 65s. The concave spherical surface 65 c covers the convex spherical surface on the side close to the base shaft portion 68 in the spherical portion 66.

  The second component 65b has a concave spherical surface 65d formed in the center thereof and recessed in a hemispherical shape, and a male screw portion 65t formed so as to be concentric with the concave spherical surface 65d, and the clip base 67 described above is fixed thereto. ing. The concave spherical surface 65d covers the convex spherical surface of the spherical portion 66 on the side far from the base shaft portion 68.

  The female screw portion 65s and the male screw portion 65t have a screw structure that connects the first component 65a and the second component 65b to each other. Then, one side of the spherical portion 66 is covered with the first component 65a, the other side of the spherical portion 66 is covered with the second component 65b, and the female screw portion 65s and the male screw portion 65t are screwed together, thereby connecting the ball joint. 70 is easily assembled.

  According to the embodiment of FIG. 11, by tightening and rotating the male thread portion 65t of the second component 65b, the second component 65b presses the spherical portion 66 toward the first component 65a as indicated by the arrow, and the concave spherical surface. The frictional force between 65c, 65d and the convex spherical surface of the spherical portion 66 increases. Therefore, the frictional force becomes a resistance force against the swing shown in FIGS. 5 to 8, and the clip member 63 can be fixed so as not to swing. In this embodiment, the female screw portion 65s is provided in the first component 65a and the male screw portion 65t is provided in the second component 65b.

  Next, an electric cable support structure according to still another embodiment of the present invention will be described with reference to FIG. Furthermore, although other embodiment is also provided with a connection part and a clip member, since the form is not specifically limited, illustration of a connection part and a clip member is abbreviate | omitted in FIG. The connecting portion and the clip member may be, for example, the connecting portion 70 and the clip member 63 shown in FIGS. 1 to 8, or may have the socket portion 65 shown in FIG. In the embodiment of FIG. 12, a male screw portion 68t is formed on the outer periphery of the base shaft portion 68 that extends from the spherical portion 66 of the connecting portion. The vehicle body 41 is provided with a female screw portion 41s for screwing with the male screw portion 68t. The female screw portion 41s is, for example, a female screw hole of a nut 41n welded to the vehicle body 41 at the same position as the through hole 41h.

  According to the embodiment of FIG. 12, the base member 64 has a base shaft portion 68 that protrudes from the spherical portion 66 of the connecting portion, and the base shaft portion 68 has a male screw portion 68t formed on the outer periphery thereof. And screwed into the female screw portion 41s provided on the head. Thus, the base member 64 can be easily attached and fixed to the vehicle body 41 in the operation of supporting the electric cables such as the power line 61 and the signal line 62 on the vehicle body 41.

  Next, an electric cable support structure according to still another embodiment of the present invention will be described with reference to FIG. Furthermore, although other embodiment is also provided with a connection part and a clip member, since the form is not specifically limited, illustration of a connection part and a clip member is abbreviate | omitted in FIG. The connecting portion and the clip member may be, for example, the connecting portion 70 and the clip member 63 shown in FIGS. 1 to 8, or may have the socket portion 65 shown in FIG. In the embodiment of FIG. 13, a base base portion 76 with a base member 74 fixed to the vehicle body 41, a ball side shaft portion 78 protruding from the base base portion 76, and a male screw 78 t formed on the outer peripheral surface of the ball side shaft portion 78 are provided. Have. The base base portion 76 has a larger diameter than the ball side shaft portion 78, and a ring member 82 is installed at a boundary portion between the base base portion 76 and the ball side shaft portion 78. The ring member 82 is a metal leaf spring, or an elastic body made of resin or rubber.

  The spherical portion 66 of the ball joint has a through hole 66h and a female screw formed on the inner peripheral surface of the through hole 66h. The spherical portion 66 is fixed to the ball side shaft portion 78 by screwing the female screw of the through hole 66 h into a male screw 78 t formed on the outer peripheral surface of the ball side shaft portion 78. The inner diameter of the center hole of the ring member 82 is larger than the outer diameter of the ball side shaft portion 78, but smaller than the outer diameter of the base base portion 76. The ring member 82 is positioned between the base base portion 76 and the spherical portion 66, and is elastically deformed when the socket portion of the connecting portion swings as shown in FIGS. Therefore, the elastic deformation becomes a resistance force to the swing shown in FIGS. 5 to 8, and the frequent swing and unstable swing of the clip member are reduced.

  In the embodiment of FIG. 13 and the embodiments of FIGS. 9 and 10 described above, the spherical component constituting the spherical portion 66 may be a sintered product obtained by sintering a metal powder. As a result, the spherical portion 66 can contain oil, and the connecting portion 70 functions as a slide bearing. Alternatively, the socket portion 65 may be a sintered product, and the socket portion 65 may be oil-impregnated.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The electric cable support structure according to the present invention is advantageously used in electric vehicles and hybrid vehicles.

11 in-wheel motor drive device (wheel drive motor), 16 terminal box,
33 hub wheel, 41 car body, 42 upper arm,
43 Lower arm, 44, 45, 46, 47 Rotating shaft,
48 road wheel, 61 power line, 62 signal line,
63 clip member, 64 base member,
65 socket part, 65a first part,
65b second part, 65c, 65d concave spherical surface, 65h central hole,
66 sphere part, 67 clip base, 67g, 69g groove,
67p, 69p protrusion, 68 base shaft, 68g groove,
68n engagement claw, 69 clip cover, 70 connecting part,
71 Hinge, 78 Ball side shaft, 78t Male thread,
80 Nut, 82 Ring member, X, Y, Z Virtual axis.

Claims (7)

Provided in a structure comprising a vehicle body, an in-wheel motor drive device, and a suspension arm having one end connected to the vehicle body via a rotation shaft and the other end connected to the in-wheel motor drive device via a rotation shaft. ,
A support structure for supporting an electric cable extending from the vehicle body and connected to the in-wheel motor drive device;
A clip member having a clip base and a clip cover for holding the electric cable between the clip base and a member coupled to the clip base;
A base member provided on the vehicle body;
A sphere part and a socket part covering the sphere part, comprising a ball joint for connecting the clip base and the base member ;
The suspension arm includes an upper arm and a lower arm,
The electric cable support structure, wherein the clip member and the ball joint are disposed above the lower arm and below the upper arm . The base member includes a base base that is connected to the vehicle body, a ball side shaft that protrudes from the base base and passes through a through hole formed in a spherical portion of the ball joint, and a cross-sectional shape of the through hole. A stopper portion that is fixedly attached to the tip of the ball side shaft portion that penetrates the through hole largely,
The electric cable support structure according to claim 1 , wherein the spherical portion is movable along the ball side shaft portion. The electric cable support structure according to claim 2 , wherein a male screw is formed on an outer periphery of a tip end portion of the ball side shaft portion, and the stopper portion is a nut that is screwed with the male screw of the ball side shaft portion. The socket part includes a first part having a concave spherical surface covering the convex spherical surface on one side of the spherical part, a second part having a concave spherical surface covering the convex spherical surface on the other side of the spherical part, the first part, and the first part. The support structure of the electric cable according to any one of claims 1 to 3 , further comprising a screw structure that couples two parts to each other. The base member includes an engaging portion, the engaging portion is connected by the engaged portion and the snap fit provided on the vehicle body, the support structure for an electric cable according to any one of claims 1-4. The base member has a base shaft portion that protrudes from the connecting portion and extends.
The base shaft portion is externally threaded is formed on the outer periphery, and the female screw hole screwed provided in the vehicle body, the support structure for an electric cable according to any one of claims 1-4. The clip cover is linked to openably said clip base via a hinge, the support structure for an electric cable according to any one of claims 1-6.

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