WO2016043064A1 - Affixation structure for protective tube - Google Patents

Affixation structure for protective tube Download PDF

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Publication number
WO2016043064A1
WO2016043064A1 PCT/JP2015/075166 JP2015075166W WO2016043064A1 WO 2016043064 A1 WO2016043064 A1 WO 2016043064A1 JP 2015075166 W JP2015075166 W JP 2015075166W WO 2016043064 A1 WO2016043064 A1 WO 2016043064A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical portion
protective tube
semi
power line
cylindrical
Prior art date
Application number
PCT/JP2015/075166
Other languages
French (fr)
Japanese (ja)
Inventor
真也 太向
四郎 田村
Original Assignee
Ntn株式会社
真也 太向
四郎 田村
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Filing date
Publication date
Application filed by Ntn株式会社, 真也 太向, 四郎 田村 filed Critical Ntn株式会社
Publication of WO2016043064A1 publication Critical patent/WO2016043064A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

Definitions

  • the present invention relates to an in-wheel motor drive device that is disposed inside a wheel of a passenger car and drives the wheel, and particularly relates to a protective tube that protects a power line extending from the vehicle body side to the in-wheel motor drive device.
  • An in-wheel motor is known that is disposed in the inner space of a wheel of an electric vehicle and drives the wheel.
  • the in-wheel motor and the wheel are accommodated in a wheel housing of the vehicle body and attached to the vehicle body by a suspension device.
  • Electric power is supplied by a plurality of power lines extending from the vehicle body to the in-wheel motor. Since foreign matter such as sand and pebbles wound up from the wheel collides with the power line, it is desired to protect the power line with an appropriate means.
  • Patent Document 1 As a structure for protecting a wire harness routed in an automobile with a corrugated tube, a structure described in, for example, Japanese Patent Application Laid-Open No. 8-308070 (Patent Document 1) is conventionally known.
  • Patent Document 1 a corrugated tube is externally mounted on a wire harness of an automobile.
  • a band clip is wound around the outer periphery of the corrugated tube to grip the corrugated tube.
  • the band clip has an arrow-shaped locking blade portion. The locking blade portion is inserted into the through hole of the vehicle body panel and engages with the periphery of the through hole. Thereby, the corrugated tube is fixed to the vehicle body panel.
  • a fixed wire harness does not move or flex.
  • the plurality of power lines are tightly bound by a band grip inside the corrugated tube, and free bending and stretching movements are restricted.
  • the corrugated tube becomes thinner at the corresponding portion if the corrugated tube is tied with a band grip. Then, when the power line bends and stretches together with the corrugated tube, the portion that is narrowed by the band grip in the extending direction position of the power line repeatedly bends and stretches intensively.
  • the present inventor has found that when such bending of the power line is frequently repeated in daily running, there is a concern that even a power line capable of bending and stretching may be damaged or broken. The reason for this is that even if the power line is a bendable stranded wire, it is not perfect for the accumulation of bending fatigue of tens of thousands to hundreds of thousands of times.
  • the present invention tightly binds the power line even if the corrugated tube is fastened and fixed by a fixing device such as a band. Provide technology to avoid this.
  • the power line protection structure for an in-wheel motor drive device comprises a flexible power line having one end connected to the in-wheel motor drive and the other end connected to the vehicle body side member.
  • a cylindrical portion that is fixed to at least one of the in-wheel motor drive device and the vehicle body side member and passes through one end side or the other end side of the power line, and covers a plurality of power lines from one end side to the other end side at the end portion
  • the cylindrical portion is not reduced in diameter by tightening the band, so there is no portion that is tightly bound in the longitudinal direction of the power line and becomes narrower. . Therefore, the power line is not repeatedly bent and stretched at a specific location, and bending fatigue can be avoided.
  • the cylindrical portion is made of a hard material such as metal. As a result, the cylindrical portion is not deformed even when an external force is applied, and a gap can be left between the inner peripheral surface of the cylindrical portion and the power line while loosely passing a plurality of power lines through the cylindrical portion.
  • the cylindrical portion is formed by combining a first semi-cylindrical portion and a second semi-cylindrical portion that are divided in the circumferential direction.
  • the power line is installed first, and the power line can be passed through the cylindrical portion later, so that the assembly efficiency is improved.
  • the first semi-cylindrical portion may be a part of the in-wheel motor driving device or the vehicle body side member, or may be a separate member attached and fixed to the in-wheel motor driving device or the vehicle body side member.
  • the shape of the first semi-cylindrical part and the second semi-cylindrical part is not particularly limited.
  • the semi-cylindrical part has an abutting surface extending in the axial direction at two locations separated in the circumferential direction, and the cylindrical part is formed by abutting the abutting surface of the second semi-cylindrical part on the abutting surface of the first semi-cylindrical part. Assemble.
  • one axial side of the first semi-cylindrical portion is coupled to a protective member provided on the in-wheel motor drive device and / or the vehicle body side member and covering the power line,
  • the other side in the axial direction is inserted into the protective tube, the first semi-cylindrical portion has a butting surface directed to the protecting member, and the second semi-cylindrical portion is brought into contact with the butting surface so as not to be separated from the protecting member in the axial direction. It should be stopped.
  • the protective tube is bent and stretched and the second semi-cylindrical portion is pulled in the axial direction, the second semi-cylindrical portion does not come out in the axial direction.
  • the cylindrical part is made of a hard material such as metal or thick hard plastic.
  • a slit may be provided in the cylindrical portion, and the diameter of the cylindrical portion may not be reduced, but the diameter may be slightly increased by opening the slit.
  • a cut is formed at one place in the circumferential direction of the cylindrical portion, and the cylindrical portion can be elastically deformed so as to open the cut. According to this embodiment, the cylindrical portion can be temporarily elastically deformed so as to open the cut line, and the power line can be passed through the cylindrical portion.
  • the power line may be passed through the cylindrical part first and the power line may be installed later without dividing the cylindrical part.
  • a cut extending from one end of the protective tube to the other end is formed at one place in the circumferential direction of the protective tube. According to this embodiment, it becomes possible to install the power line first, and to pass the power line through the protective tube later, so that the assembly efficiency is improved. As another embodiment of the present invention, the power line may be passed through the protective tube first and the power line may be installed later without forming a cut in the protective tube.
  • the protective tube is tightly tightened by the band and does not come out of the cylindrical portion.
  • one side in the axial direction of the cylindrical portion is provided on the in-wheel motor drive device and / or the vehicle body side member.
  • a flange that protrudes to the outer diameter side of the root portion is provided at the axial end portion of the cylindrical portion inserted into the protective tube.
  • a protective tube is made into a diameter smaller than the axial direction front-end
  • one side in the axial direction of the cylindrical portion is a root portion that is provided on the in-wheel motor drive device and / or the vehicle body side member and is coupled to a protective member that covers the power line, and the outer periphery of the cylindrical portion
  • the surface is formed in a taper shape so that the diameter becomes smaller from the axial front end portion into which the protective tube is inserted toward the root portion.
  • a protective tube is made into a diameter smaller than the axial direction front-end
  • the plurality of power lines are not tightly bound by the band and do not become thin. Therefore, even if the in-wheel motor drive device moves up and down or steers left and right and the power lines are bent and stretched, a specific portion of the power line does not bend and stretch, and the entire power line is moderated. Bend and stretch with a simple curve. According to the present invention, even if a plurality of power lines are protected by a common protective tube and the protective tube is fixed by a band such as a band, fatigue breakage of the power line is avoided.
  • FIG. 3 shows typically the in-wheel motor drive device which becomes one Embodiment of this invention, and represents the state seen from the vehicle width direction outer side. It is a figure which shows the same embodiment typically and represents the state seen from the vehicle back. It is a whole top view showing the embodiment typically. It is explanatory drawing which shows the corrugated tube in FIG. 3 typically in a cross section. It is a front view which shows an arm cylindrical part with a power line. It is a side view which shows the arm cylindrical part of FIG. FIG. 6 is an exploded front view showing the arm cylindrical portion and power lines of FIG. 5. It is a perspective view which takes out and shows a band from the embodiment. It is a front view which shows the arm cylindrical part of a 1st modification.
  • FIG. 1 is a diagram schematically showing an in-wheel motor drive device according to an embodiment of the present invention, and shows a state viewed from the outside in the vehicle width direction.
  • FIG. 2 is a diagram schematically showing the embodiment, and shows a state seen from the rear of the vehicle.
  • FIG. 3 is an overall plan view schematically showing the embodiment.
  • FIG. 4 is an explanatory diagram schematically showing the corrugated tube in FIG. 3 as a longitudinal section.
  • the in-wheel motor drive device of this embodiment is provided inside the wheel of an electric vehicle. This electric vehicle is a passenger car and can travel on public roads like a general engine car.
  • the in-wheel motor drive device 11 includes a motor unit 11A, a speed reduction unit 11B, and a hub unit 11C as shown in FIG.
  • the motor part 11A, the reduction part 11B, and the hub part 11C are sequentially arranged in series in the direction of the axis O of the hub wheel 12M that is a rotating member of the hub part 11C, and are arranged coaxially.
  • the in-wheel motor drive device 11 drives a wheel W (virtual line) arranged on the outer side (outboard side) in the vehicle width direction of the vehicle, and is provided in an inner space area of the road wheel W1 of the wheel W.
  • the hub portion 11C is disposed on the outboard side, and the motor portion 11A is disposed on the inner side in the vehicle width direction (inboard side).
  • the wheel W is a front wheel of the electric vehicle, and is steered about the turning axis (kingpin) K together with the in-wheel motor drive device 11.
  • the motor part 11A has a cylindrical casing
  • the reduction part 11B has a cylindrical casing having the same outer diameter as the motor part 11A on the outboard side of the motor part 11A
  • the hub part 11C is out of the reduction part 11B.
  • An outer ring member 12L having a frustoconical outer diameter that is tapered toward the board side is provided.
  • These casing and outer ring member 12 ⁇ / b> L are non-rotating members that form an outline of the in-wheel motor drive device 11.
  • the hub wheel 12M is a rotating member that protrudes from the outer ring member 12L to the outboard side.
  • the shaft portion 12S of the hub wheel 12M penetrates the central hole of the outer ring member 12L and is rotatably supported by the outer ring member 12L via a plurality of rolling elements.
  • a load wheel W1 of a wheel W indicated by an imaginary line is connected and fixed to a flange portion 12F extending in the outer diameter direction from the tip of the shaft portion 12S with a plurality of bolts (not shown).
  • the motor unit 11A incorporates a rotating electric machine in the casing, drives the hub wheel 12M of the hub unit 11C, or regenerates power by using the rotation of the hub wheel 12M.
  • the speed reduction part 11B incorporates a speed reduction mechanism such as a cycloid speed reducer in the casing, and reduces the rotation of the motor part 11A and transmits it to the hub wheel 12M.
  • the lower part of the deceleration part 11B has an oil tank 11R that protrudes further to the outer diameter side than the casing of the motor part 11A and the deceleration part 11B and stores oil.
  • the speed reducer 11B may employ a speed reducer such as a planetary gear speed reducer or a parallel biaxial speed reducer.
  • the in-wheel motor drive device 11 may be a so-called direct motor type in-wheel motor drive device that does not employ a reduction gear.
  • the hub portion 11C relatively positioned on the outboard side is disposed in the inner space region of the cylindrical load wheel W1.
  • the motor unit 11A located relatively on the inboard side protrudes from the inner space of the road wheel W1 to the inboard side.
  • a box-shaped terminal box 11T is attached to the outer peripheral surface of the motor unit 11A located outside the inner space of the road wheel W1.
  • a plurality of power lines 26, signal lines 27, and breather hoses 28 are connected to the terminal box 11T.
  • a knuckle arm 13 extending upward from the casing of the speed reducing portion 11B is provided on the upper portion of the speed reducing portion 11B.
  • the root portion 13l of the knuckle arm 13 is disposed in front of the axis O (referring to the front of the vehicle), and the root portion is integrally coupled to the casing of the speed reduction portion 11B. That is, the knuckle arm 13 is fixed to the casing of the speed reducing portion 11B.
  • the tip side of the knuckle arm 13 extends beyond the outer peripheral edge W2 of the wheel W to the outer diameter side of the wheel W as shown in FIG.
  • the casings of the knuckle arm 13 and the speed reduction part 11B are made of metal.
  • the knuckle arm 13 extending in the outer diameter direction of the wheel W temporarily extends from the base portion 13l to the intermediate portion 13m toward the inboard side, and then has a region from the intermediate portion 13m to the tip portion 13n. , Project to the outboard side and avoid interference with the wheels W. 1, the knuckle arm 13 extends from the intermediate portion 13m to the rear side (referred to as the rear of the vehicle), straddles the axis O, and reaches the tip portion 13n.
  • the tip region from the intermediate portion 13m to the tip portion 13n of the knuckle arm 13 is located on the outer diameter side of the outer peripheral edge W2 of the wheel W, and faces the outer peripheral edge W2 of the wheel W and extends in the vehicle front-rear direction.
  • a tie rod of a steering device (not shown) is connected to the tip portion 13n via a ball joint.
  • the in-wheel motor drive device 11 steers in the left-right direction of the vehicle around the turning axis K extending in the vertical direction together with the wheels W.
  • the axis O of the in-wheel motor drive device 11 extends in the vehicle width direction as shown in FIG. As a result, the vehicle travels straight.
  • the intermediate portion 13m of the knuckle arm 13 positioned above the wheel W is connected to the outboard side of the upper arm 22 extending in the vehicle width direction via the ball joint 24.
  • the oil tank 11R of the in-wheel motor drive device 11 is connected to the outboard side of the lower arm 23 extending in the vehicle width direction via a ball joint (not shown).
  • the inboard side of the upper arm 22 and the lower arm 23 is connected to a vehicle body frame (not shown).
  • the upper arm 22 arranged on the upper side and the lower arm 23 arranged on the lower side are suspension members of the double wishbone type suspension device, with the inboard side end as a base end and the outboard side end as a free end, It can swing in the vertical direction. Thereby, the in-wheel motor drive device 11 can be bound and rebounded in the vertical direction together with the wheels W.
  • a virtual straight line connecting the ball joint 24 provided at the end of the upper arm 22 on the outboard side and the ball joint provided at the end of the lower arm 23 on the outboard side constitutes the turning axis K.
  • three power lines 26, one signal line 27, and one breather hose 28 are provided.
  • the power line 26 is a flexible power cable in which a metal stranded wire is covered with a non-conductor, and can be bent.
  • three power lines 26 are provided to supply three-phase AC power (U phase, V phase, W phase) to the motor unit 11A.
  • the signal line 27 transmits a signal from a sensor built in the in-wheel motor drive device 11 to the vehicle body side.
  • the signal line 27 is a flexible power cable in which a metal stranded wire thinner than the metal stranded wire of the power line 26 is covered with a non-conductor, and has a smaller diameter than the power line 26. It can be bent with a radius smaller than 26. Further, the signal line 27 is superior to the power line 26 in terms of fatigue due to repeated bending and stretching.
  • the breather hose 28 is a hollow rubber hose that is provided to bring the internal pressure of the in-wheel motor drive device 11 close to atmospheric pressure and has flexibility. Further, the breather hose 28 is superior to the signal line 27 in terms of fatigue due to repeated bending and stretching.
  • the power line 26, the signal line 27, and the breather hose 28 are wired along the knuckle arm 13 as shown in FIG.
  • the power line 26, the signal line 27, and the breather hose 28 are bridged from the vehicle body panel 101 (FIG. 3) to the tip end portion 13n of the knuckle arm 13, and further wired along the knuckle arm 13 and drawn into the terminal box 11T. .
  • the power line 26, the signal line 27, and the breather hose 28 are sequentially passed through the panel cylindrical portion 31, the corrugated tube 41, and the arm cylindrical portion 51 between the vehicle body panel 101 and the tip end portion 13 n. And is cut off from the outer space. Further, the power line 26, the signal line 27, and the breather hose 28 are sections that extend along the knuckle arm 13 and are covered by the covers 66 and 67 and are blocked from the outer space. Thereby, the power line 26, the signal line 27, and the breather hose 28 are physically protected from foreign objects such as flying pebbles over the entire length.
  • FIG. 5 is a front view showing the arm cylindrical portion 51 taken out together with the power line 26.
  • FIG. 6 is a side view showing the arm cylindrical portion 51 taken out.
  • the arm cylindrical part 51 is a hard metal member, and includes a first semi-cylindrical part 51a and a second semi-cylindrical part 51b formed by dividing the cylindrical body into two parts.
  • An arch portion 54 is continuously formed at one end of the first semi-cylindrical portion 51a.
  • the arch portion 54 has two leg portions 55, 55, and the second semi-cylindrical portion 51 b is fitted and fixed between the leg portions 55, 55.
  • the two semi-cylindrical parts constituting the arm cylindrical part 51 are disassembled as shown in FIG.
  • the power line 26, the signal line 27, and the breather hose 28 along the first semi-cylindrical part 51a and the arch part 54, and then fitting the second semi-cylindrical part 51b, the power line 26, the signal line 27,
  • the breather hose 28 is passed through the arm cylindrical portion 51.
  • the arm cylindrical portion 51 through which these cables are passed is attached and fixed to the knuckle arm 13 so that the pair of leg portions 55 and 55 are coupled to the tip end portion 13n of the knuckle arm 13 (FIG. 2).
  • the arch portion 54 is a protective member that covers the power line 26, the signal line 27, and the breather hose 28.
  • the arch portion 54 is formed integrally with the first semi-cylindrical portion 51a as shown in FIG. 7, but as a modification (not shown), the arch portion 54 is a separate member from the first semi-cylindrical portion 51a and is connected to each other. It may be done.
  • the corrugated tube 41 is a flexible protective tube. Further, since the corrugated tube 41 is a bellows-like tube made of a resin, the corrugated tube 41 is flexible but has an appropriate shape retaining property and does not sink against an impact of a flying pebbles.
  • the corrugated tube 41 is formed with a cut extending from one end to the other end. When the corrugated tube 41 is elastically deformed so as to open such a break, the power line 26, the signal line 27, and the breather hose 28 extending from the vehicle body panel 101 to the knuckle arm 13 can be inserted into the corrugated tube 41. Then, one end of the corrugated tube 41 is inserted into the arm cylindrical portion 51 (FIG. 4).
  • the band 61 is wound around the outer peripheral surface of one end of the corrugated tube 41 with the one end of the corrugated tube 41 inserted so as to cover the outer periphery of the arm cylindrical portion 51.
  • the band 61 may be a known one as shown in FIG. 8, and the diameter is reduced by tightening and rotating a screw 62 attached to the band 61, and the outer peripheral surface of one end of the corrugated tube 41 is tightened. Accordingly, one end of the corrugated tube 41 is firmly fixed so as not to come out of the arm cylindrical portion 51.
  • the arm cylindrical portion 51 is harder than the corrugated tube 41 and does not deform even when tightened by the band 61. For this reason, the arm cylindrical part 51 keeps the inner diameter dimension, and the gap G is left between the inner peripheral surface of the arm cylindrical part 51 and the power line 26 (FIG. 5). Therefore, a plurality of cables are not tightly tied and thinned, and there is no concern that the in-wheel motor drive device 11 repeats bending and stretching only at the place where the cables are tightly tied.
  • the power line 26 may be supported by replacing the gap G with plastic or sponge.
  • the outer peripheral surface of the arm cylindrical part 51 described above is constant over the axial direction (FIG. 6).
  • a flange 52 may be provided on the outer peripheral surface of the arm cylindrical portion 51.
  • One end of the arm cylindrical portion 51 is coupled to the arch portion 54 with the knuckle arm 13 side as the root side.
  • the other end of the arm cylindrical portion 51 is a tip side into which the corrugated tube 41 is inserted.
  • a flange 52 is integrally formed on the outer peripheral surface of the tip of the arm cylindrical portion 51.
  • the outer peripheral surface of the arm cylindrical portion 51 has a large diameter at the distal end portion (flange 52) and a small diameter in the root region 56 from the central portion to the root portion (FIG. 10).
  • one end of the corrugated tube 41 is smaller than the outer diameter of the flange 52 by attaching the band 61 at the same axial position as the root region 56. It is made a diameter. Thereby, one end of the corrugated tube 41 is fixed more firmly so as not to come out of the arm cylindrical portion 51.
  • the outer peripheral surface of the arm cylindrical portion 51 may be tapered.
  • the outer peripheral surface 53 of the arm cylindrical part 51 into which the corrugated tube 41 is inserted is formed in a taper shape so that the diameter decreases in the insertion direction of the corrugated tube 41, that is, from the distal end side to the root side of the arm cylindrical part 51.
  • one end of the corrugated tube 41 is attached to the tip of the arm cylindrical portion 51 by attaching the band 61 to the base side outer peripheral surface 53 r of the arm cylindrical portion 51.
  • the diameter is smaller than the side outer peripheral surface 53s.
  • the first semi-cylindrical portion 51 a may have a butting surface 58 directed toward the base side of the arm cylindrical portion 51. .
  • the first semi-cylindrical portion 51a has abutting surfaces 57 and 59 extending in the axial direction.
  • the abutting surfaces 57, 58, 59 extend in an elongated manner continuously in a crank shape (FIG. 14).
  • the second semicylindrical portion 51b has a mating surface having a shape corresponding to the mating surfaces 57, 58, 59 of the first semicylindrical portion 51a.
  • the corresponding abutting surface of the second semi-cylindrical portion 51b is abutted against the abutting surfaces 57, 58, 59 of the first semi-cylindrical portion 51a, and the arm cylindrical portion 51 is assembled.
  • the corresponding abutting surface of the second semicylindrical portion 51 b is between the abutting surface 58 of the first semicylindrical portion 51 a and the arch portion 54.
  • the movement in the axial direction is restricted.
  • the second semi-cylindrical portion 51b is abutted against the abutting surface 58 and is prevented from coming off in the axial direction so as not to be separated from the knuckle arm 13 of the in-wheel motor drive device 11.
  • the abutting surfaces formed at two locations in the circumferential direction of the arm cylindrical portion 51 extend only in the axial direction, but are directed toward the root side.
  • a butt surface 58 may be added.
  • a cut 60 is formed only in one circumferential direction of the arm cylindrical portion 51, and the first semicylindrical portion 51a and the second The semi-cylindrical part 51b may be continued at one place in the circumferential direction.
  • the arm cylindrical portion 51 of the fourth modified example is made of a material that is harder than the corrugated tube 41 and can be elastically deformed, for example, plastic.
  • the cut 60 of the fourth modification extends to an adjacent portion of the arch portion 54 and divides the adjacent leg portion 55.
  • the divided leg tip portion 55b is formed integrally with the arch portion 54 via the second semi-cylindrical portion 51b.
  • the first semi-cylindrical portion 51a is continuous with the first semi-cylindrical portion 51a and the second semi-cylindrical portion 51b at one place in the circumferential direction. And the second semi-cylindrical portion 51b are not separated.
  • the cables such as the power line 26 are passed through the arm cylindrical portion 51 by expanding the cut 60.
  • the other end of the corrugated tube 41 is also connected and fixed to the panel cylindrical portion 31 shown in FIG. 3 and FIG.
  • FIG. 17 is a front view showing the panel cylindrical portion 31 taken out together with the power lines.
  • FIG. 18 is a plan view showing the panel cylindrical portion 31 taken out.
  • the panel cylindrical portion 31 is a hard metal member, and includes a first semi-cylindrical portion 31a and a second semi-cylindrical portion 31b formed by dividing the cylindrical body into two.
  • a flange 33a is formed at the center of the first semi-cylindrical portion 31a
  • a flange 33b is formed at the center of the second semi-cylindrical portion 31b.
  • a C-shaped connector 32 is fixed to the rear surfaces of the flanges 33a and 33b. Thereby, the first semi-cylindrical portion 31a and the second semi-cylindrical portion 31b maintain a cylindrical shape.
  • the two semi-cylindrical parts constituting the panel cylindrical part 31 are disassembled as shown in FIG.
  • the power line 26, the signal line 27, and the breather hose 28 are It passes through the panel cylindrical portion 31 (FIG. 17).
  • the panel cylindrical portion 31 through which these cables are passed is fixed to the surface of the vehicle body panel 101. Specifically, bolts are inserted into the through holes 34 of the connector 32 attached and fixed to the back surfaces of the pair of flanges 33a and 33b, and the bolts are screwed into female screw holes (not shown) of the vehicle body panel 101. To do.
  • the connector 32 includes a C-shaped grommet 38 that is coaxially disposed on the panel cylindrical portion 31 and protrudes toward the back surface side, and the grommet 38 is fitted into the lower hole of the vehicle body panel 101.
  • the other end of the corrugated tube 41 is inserted into the panel cylindrical portion 31 through which the cables are passed (FIG. 4).
  • the vehicle body panel 101 is a vehicle body side member attached and fixed to a vehicle body frame (not shown).
  • the band 61 described above is wound around the outer peripheral surface of the other end of the corrugated tube 41 in a state where the other end of the corrugated tube 41 is inserted so as to cover the outer periphery of the panel cylindrical portion 31. Accordingly, the other end of the corrugated tube 41 is firmly fixed so as not to come out of the panel cylindrical portion 31.
  • the outer peripheral surface of the panel cylindrical portion 31 described above is constant over the axial direction (FIG. 18).
  • a flange 35 may be provided on the outer peripheral surface of the panel cylindrical portion 31.
  • the effect of the panel cylindrical portion 31 including the flange 35 is the same as that of the arm cylindrical portion 51 (FIGS. 9 and 10) of the first modification described above.
  • the outer peripheral surface of the panel cylindrical portion 31 may be tapered.
  • the outer peripheral surface 36 of the panel cylindrical portion 31 into which the corrugated tube 41 is inserted is formed in a taper shape so that the diameter decreases in the insertion direction of the corrugated tube 41, that is, from the distal end side to the root side of the panel cylindrical portion 31.
  • the operational effect of the panel cylindrical portion 31 having the tapered outer peripheral surface 36 is the same as that of the arm cylindrical portion 51 (FIGS. 11 and 12) of the second modification described above.
  • the in-wheel motor drive device according to the present invention is advantageously used in electric vehicles and hybrid vehicles.
  • 11 In-wheel motor drive device 11T terminal box, 12M hub wheel, 12S shaft, 13 knuckle arm, 13l root, 13m middle, 13n tip, 22 upper arm, 23 lower arm, 24 ball joint, 26 power line, 27 Signal line, 28 breather hose, 31 panel cylindrical part, 31a first semi-cylindrical part, 31b second semi-cylindrical part, 32 coupler, 33a, 33b flange, 36 outer peripheral surface, 41 corrugated tube (protective tube), 51 arm cylinder Part, 54 arch part, 55 leg part, 57, 58, 59 abutting surface, 60 cut, 61 band, 62 screw, 66, 67 cover, 101 body panel, W wheel.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

An affixation structure for a protective tube is provided with: a plurality of flexible power lines (26), one end of each of which is connected to an in-wheel motor drive device (11) and the other end thereof is connected to a vehicle body-side member (101); circular cylindrical sections (31, 51) which are affixed to the in-wheel motor drive device and/or the vehicle body-side member and through which the one end or the other end of the each of the power lines is passed; a flexible protective tube (41) which covers the plurality of power lines from the one end to the other end thereof, and into the ends of which the circular cylinder sections are inserted; and bands (61) which are wound around the outer peripheral surfaces of the ends of the protective tube and which affix the ends of the protective tube to the outer peripheral surfaces of the circular cylinder sections while the inner diameter of the circular cylinder sections is maintained.

Description

保護チューブの固定構造Protective tube fixing structure
　本発明は、乗用自動車の車輪内部に配置され、当該車輪を駆動するインホイールモータ駆動装置に関し、特に車体側からインホイールモータ駆動装置まで延びる動力線を保護する保護チューブに関する。 The present invention relates to an in-wheel motor drive device that is disposed inside a wheel of a passenger car and drives the wheel, and particularly relates to a protective tube that protects a power line extending from the vehicle body side to the in-wheel motor drive device.
　電動車両の車輪の内空領域に配置され、当該車輪を駆動するインホイールモータが知られている。インホイールモータおよび車輪は、車体のホイールハウジングに収容され、サスペンション装置によって車体に取り付けられる。そして車体からインホイールモータまで延びる複数本の動力線によって電力が供給される。動力線には、車輪から巻き上げられる砂や小石などの異物が衝突することから、動力線を適切な手段で保護することが望まれる。 An in-wheel motor is known that is disposed in the inner space of a wheel of an electric vehicle and drives the wheel. The in-wheel motor and the wheel are accommodated in a wheel housing of the vehicle body and attached to the vehicle body by a suspension device. Electric power is supplied by a plurality of power lines extending from the vehicle body to the in-wheel motor. Since foreign matter such as sand and pebbles wound up from the wheel collides with the power line, it is desired to protect the power line with an appropriate means.
　自動車に配索されるワイヤハーネスをコルゲートチューブで保護する構造としては従来、例えば、特開平８－３０８０７０号公報（特許文献１）に記載のごときものが知られている。特許文献１には、自動車のワイヤハーネスにコルゲートチューブを外装したものである。コルゲートチューブの外周にはバンドクリップを巻き付けて当該コルゲートチューブを把持する。このバンドクリップは矢印形状の係止羽根部を有する。係止羽根部は車体パネルの貫通孔に差し込まれて、貫通孔の周縁に係合する。これによりコルゲートチューブは、車体パネルに固定される。固定されたワイヤハーネスは動いたり屈伸したりすることはない。 As a structure for protecting a wire harness routed in an automobile with a corrugated tube, a structure described in, for example, Japanese Patent Application Laid-Open No. 8-308070 (Patent Document 1) is conventionally known. In Patent Document 1, a corrugated tube is externally mounted on a wire harness of an automobile. A band clip is wound around the outer periphery of the corrugated tube to grip the corrugated tube. The band clip has an arrow-shaped locking blade portion. The locking blade portion is inserted into the through hole of the vehicle body panel and engages with the periphery of the through hole. Thereby, the corrugated tube is fixed to the vehicle body panel. A fixed wire harness does not move or flex.
特開平８－３０８０７０号公報JP-A-8-308070
　しかし、特許文献１に記載されたコルゲートチューブおよびバンドクリップを、そのままインホイールモータ駆動装置の動力線に採用すれば、以下に説明するような問題を生ずる。つまり、インホイールモータは車体からみてバネ下部材であるため、インホイールモータが路面の凹凸や電動車両の加減速等に応じて上下方向に移動し、この際に動力線が屈伸を繰り返す。またインホイールモータが転舵輪の内空領域に設置される場合、インホイールモータが転舵軸線回りに転舵するため、この際に動力線が屈伸を繰り返す。 However, if the corrugated tube and the band clip described in Patent Document 1 are adopted as they are for the power line of the in-wheel motor drive device, problems as described below arise. That is, since the in-wheel motor is an unsprung member when viewed from the vehicle body, the in-wheel motor moves in the vertical direction according to road surface unevenness, acceleration / deceleration of the electric vehicle, and the power line repeatedly bends and stretches. When the in-wheel motor is installed in the inner space of the steered wheel, the in-wheel motor steers around the turning axis, and the power line repeatedly bends and stretches at this time.
　また特許文献１に記載された構造で複数本の動力線を保護するならば、複数の動力線はコルゲートチューブの内部で、バンドグリップによってきつく縛られ、自由な屈伸運動を規制される。またコルゲートチューブに切れ目を入れておき、この切れ目を押し広げて動力線をコルゲートチューブの内部に入れる場合、コルゲートチューブをバンドグリップで縛れば、コルゲートチューブが当該箇所で細くなる。そうすると、動力線がコルゲートチューブとともに屈伸する際、動力線の延在方向位置のうちバンドグリップで縛られて細くなった箇所が集中的に屈伸を繰り返す。かかる動力線の屈伸が日常の走行において頻繁に繰り返されると、屈伸可能な動力線といえども損傷ないし破断する懸念があることを本発明者は見出した。この理由として、動力線は屈曲可能な撚り線といえども、数万～数十万回の曲げ疲労の蓄積に対しては万全ではないことが考えられる。 Further, if a plurality of power lines are protected by the structure described in Patent Document 1, the plurality of power lines are tightly bound by a band grip inside the corrugated tube, and free bending and stretching movements are restricted. In addition, when a cut is made in the corrugated tube and the cut is spread and the power line is put inside the corrugated tube, the corrugated tube becomes thinner at the corresponding portion if the corrugated tube is tied with a band grip. Then, when the power line bends and stretches together with the corrugated tube, the portion that is narrowed by the band grip in the extending direction position of the power line repeatedly bends and stretches intensively. The present inventor has found that when such bending of the power line is frequently repeated in daily running, there is a concern that even a power line capable of bending and stretching may be damaged or broken. The reason for this is that even if the power line is a bendable stranded wire, it is not perfect for the accumulation of bending fatigue of tens of thousands to hundreds of thousands of times.
　本発明は、インホイールモータと車体を接続する複数本の動力線を、共通するコルゲートチューブで保護する場合において、コルゲートチューブをバンド等の固定具によって締め付け固定しても、動力線をきつく縛ることを回避する技術を提供する。 In the case where a plurality of power lines connecting the in-wheel motor and the vehicle body are protected by a common corrugated tube, the present invention tightly binds the power line even if the corrugated tube is fastened and fixed by a fixing device such as a band. Provide technology to avoid this.
　この目的のため本発明によるインホイールモータ駆動装置の動力線保護構造は、一端側がインホイールモータ駆動装置に接続されて他端側が車体側メンバに接続される可撓性の複数本の動力線と、インホイールモータ駆動装置および車体側メンバの少なくとも一方に固定されて動力線の一端側または他端側が通される円筒部と、複数本の動力線を一端側から他端側まで覆い端部に円筒部が差し込まれる可撓性の保護チューブと、保護チューブの端部外周面に巻き付き、円筒部の内径寸法を保持したまま保護チューブの端部を円筒部の外周面に固定するバンドとを備える。 For this purpose, the power line protection structure for an in-wheel motor drive device according to the present invention comprises a flexible power line having one end connected to the in-wheel motor drive and the other end connected to the vehicle body side member. A cylindrical portion that is fixed to at least one of the in-wheel motor drive device and the vehicle body side member and passes through one end side or the other end side of the power line, and covers a plurality of power lines from one end side to the other end side at the end portion A flexible protective tube into which the cylindrical portion is inserted, and a band that wraps around the outer peripheral surface of the end portion of the protective tube and fixes the end portion of the protective tube to the outer peripheral surface of the cylindrical portion while maintaining the inner diameter dimension of the cylindrical portion. .
　かかる本発明によれば、保護チューブに巻き付くバンドを備えているといえども、円筒部はバンドの締め付けによって縮径しないことから、動力線の長手方向においてきつく縛られて細くなる箇所が存在しない。したがって特定箇所で動力線が繰り返し屈伸することがなく、曲げ疲労を回避することができる。円筒部は例えば金属等の硬質の素材からなる。これにより円筒部は外力を受けても変形せず、円筒部に複数本の動力線を緩く通したまま円筒部の内周面および動力線間に隙間を残すことができる。 According to the present invention, even though the band wound around the protective tube is provided, the cylindrical portion is not reduced in diameter by tightening the band, so there is no portion that is tightly bound in the longitudinal direction of the power line and becomes narrower. . Therefore, the power line is not repeatedly bent and stretched at a specific location, and bending fatigue can be avoided. The cylindrical portion is made of a hard material such as metal. As a result, the cylindrical portion is not deformed even when an external force is applied, and a gap can be left between the inner peripheral surface of the cylindrical portion and the power line while loosely passing a plurality of power lines through the cylindrical portion.
　本発明の一実施形態として円筒部は周方向に分割された第１半円筒部および第２半円筒部を組み合わせてなる。かかる実施形態によれば、先に動力線を設置し、後から円筒部に動力線を通すことができることから組み立て効率が向上する。なお第１半円筒部はインホイールモータ駆動装置または車体側メンバの一部分であってもよいし、インホイールモータ駆動装置または車体側メンバに取り付け固定される別部材であってもよい。 As an embodiment of the present invention, the cylindrical portion is formed by combining a first semi-cylindrical portion and a second semi-cylindrical portion that are divided in the circumferential direction. According to this embodiment, the power line is installed first, and the power line can be passed through the cylindrical portion later, so that the assembly efficiency is improved. The first semi-cylindrical portion may be a part of the in-wheel motor driving device or the vehicle body side member, or may be a separate member attached and fixed to the in-wheel motor driving device or the vehicle body side member.
　第１半円筒部および第２半円筒部の形状は特に限定されない。例えば半円筒部は、周方向に離れた２箇所に、軸方向に細長く延びる突合面を有し、第１半円筒部の突合面に第２半円筒部の突合面を突き合わせることによって円筒部を組み立てる。本発明の好ましい実施形態として、第１半円筒部の軸方向一方側はインホイールモータ駆動装置および／または車体側メンバに設けられて動力線を覆う保護部材と結合し、第１半円筒部の軸方向他方側は保護チューブ内に差し込まれ、第１半円筒部は保護部材に指向する突合面を有し、第２半円筒部は突合面に突合して保護部材から離れないよう軸方向に抜け止めされるとよい。かかる実施形態によれば、保護チューブが屈伸して第２半円筒部が軸方向に引っ張られても、第２半円筒部が軸方向に抜け出すことがない。 The shape of the first semi-cylindrical part and the second semi-cylindrical part is not particularly limited. For example, the semi-cylindrical part has an abutting surface extending in the axial direction at two locations separated in the circumferential direction, and the cylindrical part is formed by abutting the abutting surface of the second semi-cylindrical part on the abutting surface of the first semi-cylindrical part. Assemble. As a preferred embodiment of the present invention, one axial side of the first semi-cylindrical portion is coupled to a protective member provided on the in-wheel motor drive device and / or the vehicle body side member and covering the power line, The other side in the axial direction is inserted into the protective tube, the first semi-cylindrical portion has a butting surface directed to the protecting member, and the second semi-cylindrical portion is brought into contact with the butting surface so as not to be separated from the protecting member in the axial direction. It should be stopped. According to this embodiment, even if the protective tube is bent and stretched and the second semi-cylindrical portion is pulled in the axial direction, the second semi-cylindrical portion does not come out in the axial direction.
　円筒部は、金属製あるいは肉厚の硬質プラスチック等、硬質の素材からなる。これにより円筒部にバンドの締め付け力が加わっても、円筒部の内径寸法が小さくなることはない。あるいは円筒部にスリットを設け、円筒部は縮径不能であるがスリットを開くことによって若干拡径可能であってもよい。本発明の他の実施形態として円筒部の周方向一箇所には切れ目が形成され、円筒部は切れ目を開くように弾性変形可能である。かかる実施形態によれば、切れ目を開くようにして円筒部を一時的に弾性変形させて円筒部に動力線を通すことができる。したがって先に動力線を設置し、後から円筒部に動力線を通すことが可能となり組み立て効率が向上する。本発明の他の実施形態として、円筒部を分割することなく、先に円筒部に動力線を通し、後から動力線を設置してもよい。 The cylindrical part is made of a hard material such as metal or thick hard plastic. As a result, even if a band tightening force is applied to the cylindrical portion, the inner diameter dimension of the cylindrical portion is not reduced. Alternatively, a slit may be provided in the cylindrical portion, and the diameter of the cylindrical portion may not be reduced, but the diameter may be slightly increased by opening the slit. As another embodiment of the present invention, a cut is formed at one place in the circumferential direction of the cylindrical portion, and the cylindrical portion can be elastically deformed so as to open the cut. According to this embodiment, the cylindrical portion can be temporarily elastically deformed so as to open the cut line, and the power line can be passed through the cylindrical portion. Therefore, it is possible to install the power line first, and to pass the power line through the cylindrical portion later, so that the assembly efficiency is improved. As another embodiment of the present invention, the power line may be passed through the cylindrical part first and the power line may be installed later without dividing the cylindrical part.
　本発明の好ましい実施形態として保護チューブの周方向一箇所には、保護チューブの一端から他端まで延びる切れ目が形成される。かかる実施形態によれば、先に動力線を設置し、後から保護チューブに動力線を通すことが可能となり組み立て効率が向上する。本発明の他の実施形態として、保護チューブに切れ目を形成することなく、先に保護チューブに動力線を通し、後から動力線を設置してもよい。 As a preferred embodiment of the present invention, a cut extending from one end of the protective tube to the other end is formed at one place in the circumferential direction of the protective tube. According to this embodiment, it becomes possible to install the power line first, and to pass the power line through the protective tube later, so that the assembly efficiency is improved. As another embodiment of the present invention, the power line may be passed through the protective tube first and the power line may be installed later without forming a cut in the protective tube.
　保護チューブはバンドによってきつく締め付けられて円筒部から抜け出すことはないが、本発明の好ましい実施形態として円筒部の軸方向一方側はインホイールモータ駆動装置および／または車体側メンバに設けられて動力線を覆う保護部材と結合する根元部であって、保護チューブ内に差し込まれる円筒部の軸方向先端部には根元部よりも外径側に突出するフランジが設けられる。かかる実施形態によれば、円筒部の根元部にバンドを巻き付けることにより、保護チューブが円筒部の軸方向先端部、すなわちフランジ、よりも小さな径にされる。したがって保護チューブの端部が円筒部から抜けないよう強固に接続固定できる。 The protective tube is tightly tightened by the band and does not come out of the cylindrical portion. However, as a preferred embodiment of the present invention, one side in the axial direction of the cylindrical portion is provided on the in-wheel motor drive device and / or the vehicle body side member. A flange that protrudes to the outer diameter side of the root portion is provided at the axial end portion of the cylindrical portion inserted into the protective tube. According to this embodiment, a protective tube is made into a diameter smaller than the axial direction front-end | tip part of a cylindrical part, ie, a flange, by winding a band around the base part of a cylindrical part. Accordingly, the end of the protective tube can be firmly connected and fixed so that it does not come off the cylindrical portion.
　本発明の他の実施形態として円筒部の軸方向一方側はインホイールモータ駆動装置および／または車体側メンバに設けられて動力線を覆う保護部材と結合する根元部であって、円筒部の外周面は保護チューブが差し込まれる軸方向先端部から根元部に向かうにつれて小径となるようテーパ状に形成される。かかる実施形態によれば、円筒部の根元部にバンドを巻き付けることにより、保護チューブが円筒部の軸方向先端部よりも小さな径にされる。したがって保護チューブの端部が円筒部から抜けないよう強固に接続固定できる。 As another embodiment of the present invention, one side in the axial direction of the cylindrical portion is a root portion that is provided on the in-wheel motor drive device and / or the vehicle body side member and is coupled to a protective member that covers the power line, and the outer periphery of the cylindrical portion The surface is formed in a taper shape so that the diameter becomes smaller from the axial front end portion into which the protective tube is inserted toward the root portion. According to this embodiment, a protective tube is made into a diameter smaller than the axial direction front-end | tip part of a cylindrical part by winding a band around the base part of a cylindrical part. Accordingly, the end of the protective tube can be firmly connected and fixed so that it does not come off the cylindrical portion.
　このように本発明によれば、複数本の動力線がバンドによってきつく縛られず、細くならない。したがってインホイールモータ駆動装置が上下移動したり左右に転舵したりして複数本の動力線が屈伸しても、動力線の特定の箇所に屈伸が生じず、動力線の全体に亘って緩やかなカーブで屈伸する。本発明によれば複数本の動力線を、共通する保護チューブで保護し、保護チューブをバンド等のバンドによって固定しても、動力線の疲労破壊が回避される。 Thus, according to the present invention, the plurality of power lines are not tightly bound by the band and do not become thin. Therefore, even if the in-wheel motor drive device moves up and down or steers left and right and the power lines are bent and stretched, a specific portion of the power line does not bend and stretch, and the entire power line is moderated. Bend and stretch with a simple curve. According to the present invention, even if a plurality of power lines are protected by a common protective tube and the protective tube is fixed by a band such as a band, fatigue breakage of the power line is avoided.
本発明の一実施形態になるインホイールモータ駆動装置を模式的に示す図であり、車幅方向外側からみた状態を表す。It is a figure which shows typically the in-wheel motor drive device which becomes one Embodiment of this invention, and represents the state seen from the vehicle width direction outer side. 同実施形態を模式的に示す図であり、車両後方からみた状態を表す。It is a figure which shows the same embodiment typically and represents the state seen from the vehicle back. 同実施形態を模式的に示す全体平面図である。It is a whole top view showing the embodiment typically. 図３中のコルゲートチューブを断面にして模式的に示す説明図である。It is explanatory drawing which shows the corrugated tube in FIG. 3 typically in a cross section. アーム円筒部を動力線とともに示す正面図である。It is a front view which shows an arm cylindrical part with a power line. 図５のアーム円筒部を示す側面図である。It is a side view which shows the arm cylindrical part of FIG. 図５のアーム円筒部および動力線を示す分解正面図である。FIG. 6 is an exploded front view showing the arm cylindrical portion and power lines of FIG. 5. 同実施形態からバンドを取り出して示す斜視図である。It is a perspective view which takes out and shows a band from the embodiment. 第１変形例のアーム円筒部を示す正面図である。It is a front view which shows the arm cylindrical part of a 1st modification. 図９のアーム円筒部を示す側面図である。It is a side view which shows the arm cylindrical part of FIG. 第２変形例のアーム円筒部を示す正面図である。It is a front view which shows the arm cylindrical part of a 2nd modification. 図１１のアーム円筒部を示す側面図である。It is a side view which shows the arm cylindrical part of FIG. 第３変形例のアーム円筒部を示す正面図である。It is a front view which shows the arm cylindrical part of a 3rd modification. 図１３のアーム円筒部を示す側面図である。It is a side view which shows the arm cylindrical part of FIG. 第４変形例のアーム円筒部を示す正面図である。It is a front view which shows the arm cylindrical part of a 4th modification. 図１５のアーム円筒部を示す側面図である。It is a side view which shows the arm cylindrical part of FIG. パネル円筒部を動力線とともに示す正面図である。It is a front view which shows a panel cylindrical part with a power line. 図１７のパネル円筒部を示す平面図である。It is a top view which shows the panel cylinder part of FIG. 図１７のパネル円筒部および動力線を示す分解正面図である。It is a disassembled front view which shows the panel cylinder part and power line of FIG. 第１変形例のパネル円筒部を示す正面図である。It is a front view which shows the panel cylindrical part of the 1st modification. 図２０のパネル円筒部を示す平面図である。It is a top view which shows the panel cylindrical part of FIG. 第２変形例のパネル円筒部を示す正面図である。It is a front view which shows the panel cylindrical part of the 2nd modification. 図２２のパネル円筒部を示す平面図である。It is a top view which shows the panel cylinder part of FIG.
　以下、本発明の実施の形態を、図面に基づき詳細に説明する。図１は、本発明の一実施形態になるインホイールモータ駆動装置を模式的に示す図であり、車幅方向外側からみた状態を表す。図２は同実施形態を模式的に示す図であり、車両後方からみた状態を表す。図３は同実施形態を模式的に示す全体平面図である。図４は、図３中のコルゲートチューブを縦断面にして模式的に示す説明図である。本実施形態のインホイールモータ駆動装置は、電気自動車の車輪の内部に設けられる。この電気自動車は乗用自動車であり、一般的なエンジン自動車と同様に公道を走行可能である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing an in-wheel motor drive device according to an embodiment of the present invention, and shows a state viewed from the outside in the vehicle width direction. FIG. 2 is a diagram schematically showing the embodiment, and shows a state seen from the rear of the vehicle. FIG. 3 is an overall plan view schematically showing the embodiment. FIG. 4 is an explanatory diagram schematically showing the corrugated tube in FIG. 3 as a longitudinal section. The in-wheel motor drive device of this embodiment is provided inside the wheel of an electric vehicle. This electric vehicle is a passenger car and can travel on public roads like a general engine car.
　インホイールモータ駆動装置１１は、図２に示すように、モータ部１１Ａ、減速部１１Ｂ、およびハブ部１１Ｃを備える。これらモータ部１１Ａ、減速部１１Ｂ、およびハブ部１１Ｃは、ハブ部１１Ｃの回転部材であるハブ輪１２Ｍの軸線Ｏ方向に順次直列に配置され、かつ同軸に配置される。 The in-wheel motor drive device 11 includes a motor unit 11A, a speed reduction unit 11B, and a hub unit 11C as shown in FIG. The motor part 11A, the reduction part 11B, and the hub part 11C are sequentially arranged in series in the direction of the axis O of the hub wheel 12M that is a rotating member of the hub part 11C, and are arranged coaxially.
　インホイールモータ駆動装置１１は、車両の車幅方向外側（アウトボード側）に配置される車輪Ｗ（仮想線）を駆動するものであり、車輪ＷのロードホイールＷ１の内空領域に設けられる。ハブ部１１Ｃはアウトボード側に配置され、モータ部１１Ａは車幅方向内側（インボード側）に配置される。なお車輪Ｗは電気自動車の前輪であり、インホイールモータ駆動装置１１とともに転舵軸線（キングピン）Ｋ回りに転舵する。 The in-wheel motor drive device 11 drives a wheel W (virtual line) arranged on the outer side (outboard side) in the vehicle width direction of the vehicle, and is provided in an inner space area of the road wheel W1 of the wheel W. The hub portion 11C is disposed on the outboard side, and the motor portion 11A is disposed on the inner side in the vehicle width direction (inboard side). The wheel W is a front wheel of the electric vehicle, and is steered about the turning axis (kingpin) K together with the in-wheel motor drive device 11.
　モータ部１１Ａは円筒形状のケーシングを有し、減速部１１Ｂはモータ部１１Ａのアウトボード側でモータ部１１Ａと同じ外径を有する円筒形状のケーシングを有し、ハブ部１１Ｃは減速部１１Ｂからアウトボード側に向かって先細に形成される円錐台形状の外径の外輪部材１２Ｌを有する。これらケーシングおよび外輪部材１２Ｌはインホイールモータ駆動装置１１の外郭をなす非回転部材である。これに対しハブ輪１２Ｍは、外輪部材１２Ｌからアウトボード側に突出する回転部材である。ハブ輪１２Ｍの軸部１２Ｓは外輪部材１２Ｌの中央孔を貫通し、複数の転動体を介して外輪部材１２Ｌに回転自在に支持される。軸部１２Ｓの先端から外径方向に延びるフランジ部１２Ｆには、図示しない複数のボルトで、仮想線で示す車輪ＷのロードホイールＷ１が連結固定される。 The motor part 11A has a cylindrical casing, the reduction part 11B has a cylindrical casing having the same outer diameter as the motor part 11A on the outboard side of the motor part 11A, and the hub part 11C is out of the reduction part 11B. An outer ring member 12L having a frustoconical outer diameter that is tapered toward the board side is provided. These casing and outer ring member 12 </ b> L are non-rotating members that form an outline of the in-wheel motor drive device 11. On the other hand, the hub wheel 12M is a rotating member that protrudes from the outer ring member 12L to the outboard side. The shaft portion 12S of the hub wheel 12M penetrates the central hole of the outer ring member 12L and is rotatably supported by the outer ring member 12L via a plurality of rolling elements. A load wheel W1 of a wheel W indicated by an imaginary line is connected and fixed to a flange portion 12F extending in the outer diameter direction from the tip of the shaft portion 12S with a plurality of bolts (not shown).
　モータ部１１Ａはケーシング内に回転電機を内蔵し、ハブ部１１Ｃのハブ輪１２Ｍを駆動し、あるいはハブ輪１２Ｍの回転を利用して電力回生を行う。減速部１１Ｂはケーシング内に例えばサイクロイド減速機などの減速機構を内蔵し、モータ部１１Ａの回転を減速してハブ輪１２Ｍに伝達する。なお減速部１１Ｂの下部は、モータ部１１Ａおよび減速部１１Ｂのケーシングよりもさらに外径側に張り出し、オイルを貯留するためのオイルタンク１１Ｒを有する。なお、減速部１１Ｂは遊星歯車減速機、平行二軸減速機などの減速機を採用してもよい。あるいはインホイールモータ駆動装置１１は、減速機を採用しない、いわゆるダイレクトモータタイプのインホイールモータ駆動装置であってもよい。 The motor unit 11A incorporates a rotating electric machine in the casing, drives the hub wheel 12M of the hub unit 11C, or regenerates power by using the rotation of the hub wheel 12M. The speed reduction part 11B incorporates a speed reduction mechanism such as a cycloid speed reducer in the casing, and reduces the rotation of the motor part 11A and transmits it to the hub wheel 12M. In addition, the lower part of the deceleration part 11B has an oil tank 11R that protrudes further to the outer diameter side than the casing of the motor part 11A and the deceleration part 11B and stores oil. Note that the speed reducer 11B may employ a speed reducer such as a planetary gear speed reducer or a parallel biaxial speed reducer. Alternatively, the in-wheel motor drive device 11 may be a so-called direct motor type in-wheel motor drive device that does not employ a reduction gear.
　相対的にアウトボード側に位置するハブ部１１Ｃは、円筒形状のロードホイールＷ１の内空領域に配置される。これに対し相対的にインボード側に位置するおよびモータ部１１Ａは、ロードホイールＷ１の内空領域からインボード側へはみ出す。図１に示すように、ロードホイールＷ１の内空領域の外に位置するモータ部１１Ａの外周面には箱状の端子ボックス１１Ｔが附設される。端子ボックス１１Ｔには複数本の動力線２６、信号線２７、およびブリーザホース２８が接続される。 The hub portion 11C relatively positioned on the outboard side is disposed in the inner space region of the cylindrical load wheel W1. On the other hand, the motor unit 11A located relatively on the inboard side protrudes from the inner space of the road wheel W1 to the inboard side. As shown in FIG. 1, a box-shaped terminal box 11T is attached to the outer peripheral surface of the motor unit 11A located outside the inner space of the road wheel W1. A plurality of power lines 26, signal lines 27, and breather hoses 28 are connected to the terminal box 11T.
　減速部１１Ｂの上部には、図２に示すように減速部１１Ｂのケーシングから上方へ延びるナックルアーム１３が設けられている。図１に示すようにナックルアーム１３の根元部１３ｌが軸線Ｏよりも前側（車両前方をいう）に配置され、当該根元部は減速部１１Ｂのケーシングと一体結合する。つまりナックルアーム１３は、減速部１１Ｂのケーシングに固定される。ナックルアーム１３の先端側は、図２に示すように車輪Ｗの外周縁Ｗ２を超えて、車輪Ｗの外径側へ延びる。ナックルアーム１３および減速部１１Ｂのケーシングは金属製である。 As shown in FIG. 2, a knuckle arm 13 extending upward from the casing of the speed reducing portion 11B is provided on the upper portion of the speed reducing portion 11B. As shown in FIG. 1, the root portion 13l of the knuckle arm 13 is disposed in front of the axis O (referring to the front of the vehicle), and the root portion is integrally coupled to the casing of the speed reduction portion 11B. That is, the knuckle arm 13 is fixed to the casing of the speed reducing portion 11B. The tip side of the knuckle arm 13 extends beyond the outer peripheral edge W2 of the wheel W to the outer diameter side of the wheel W as shown in FIG. The casings of the knuckle arm 13 and the speed reduction part 11B are made of metal.
　車輪Ｗの外径方向に延びるナックルアーム１３は、図２に示すようにその根元部１３ｌから中間部１３ｍまで一旦インボード側へ向かって延び、次に中間部１３ｍから先端部１３ｎまでの領域が、アウトボード側へ張り出し、車輪Ｗとの干渉を回避する。また図１を参照してナックルアーム１３は、中間部１３ｍから後側（車両後方をいう）へ延びて、軸線Ｏを跨ぎ、先端部１３ｎに至る。ナックルアーム１３の中間部１３ｍから先端部１３ｎまでの先端領域は、車輪Ｗの外周縁Ｗ２よりも外径側に位置し、車輪Ｗの外周縁Ｗ２と向き合って車両前後方向に延びる。 As shown in FIG. 2, the knuckle arm 13 extending in the outer diameter direction of the wheel W temporarily extends from the base portion 13l to the intermediate portion 13m toward the inboard side, and then has a region from the intermediate portion 13m to the tip portion 13n. , Project to the outboard side and avoid interference with the wheels W. 1, the knuckle arm 13 extends from the intermediate portion 13m to the rear side (referred to as the rear of the vehicle), straddles the axis O, and reaches the tip portion 13n. The tip region from the intermediate portion 13m to the tip portion 13n of the knuckle arm 13 is located on the outer diameter side of the outer peripheral edge W2 of the wheel W, and faces the outer peripheral edge W2 of the wheel W and extends in the vehicle front-rear direction.
　先端部１３ｎには、ボールジョイントを介して、図示しないステアリング装置のタイロッドが連結される。ステアリング装置からナックルアーム１３に転舵力を入力すると、インホイールモータ駆動装置１１は車輪Ｗとともに、上下方向に延びる転舵軸線Ｋを中心として、車両の左右方向に転舵する。車輪Ｗの転舵角が０°のとき、インホイールモータ駆動装置１１の軸線Ｏは図２に示すように車幅方向に延びる。これにより車両は直進走行する。 A tie rod of a steering device (not shown) is connected to the tip portion 13n via a ball joint. When a steering force is input from the steering device to the knuckle arm 13, the in-wheel motor drive device 11 steers in the left-right direction of the vehicle around the turning axis K extending in the vertical direction together with the wheels W. When the turning angle of the wheel W is 0 °, the axis O of the in-wheel motor drive device 11 extends in the vehicle width direction as shown in FIG. As a result, the vehicle travels straight.
　次にインホイールモータ駆動装置１１を懸架するサスペンション装置につき説明する。 Next, a suspension device for suspending the in-wheel motor drive device 11 will be described.
　車輪Ｗよりも上方に位置するナックルアーム１３の中間部１３ｍは、ボールジョイント２４を介して、車幅方向に延びるアッパアーム２２のアウトボード側と連結する。インホイールモータ駆動装置１１のオイルタンク１１Ｒは、ボールジョイント（図略）を介して、車幅方向に延びるロアアーム２３のアウトボード側と連結する。アッパアーム２２およびロアアーム２３のインボード側は図示しない車体フレームと連結する。上方に配置されるアッパアーム２２と、下方に配置されるロアアーム２３は、ダブルウィッシュボーン式サスペンション装置のサスペンション部材であり、インボード側端部を基端とし、アウトボード側端部を遊端として、上下方向に揺動可能である。これによりインホイールモータ駆動装置１１は車輪Ｗとともに上下方向にバウンドおよびリバウンド可能とされる。 The intermediate portion 13m of the knuckle arm 13 positioned above the wheel W is connected to the outboard side of the upper arm 22 extending in the vehicle width direction via the ball joint 24. The oil tank 11R of the in-wheel motor drive device 11 is connected to the outboard side of the lower arm 23 extending in the vehicle width direction via a ball joint (not shown). The inboard side of the upper arm 22 and the lower arm 23 is connected to a vehicle body frame (not shown). The upper arm 22 arranged on the upper side and the lower arm 23 arranged on the lower side are suspension members of the double wishbone type suspension device, with the inboard side end as a base end and the outboard side end as a free end, It can swing in the vertical direction. Thereby, the in-wheel motor drive device 11 can be bound and rebounded in the vertical direction together with the wheels W.
　アッパアーム２２のアウトボード側端部に設けられたボールジョイント２４とロアアーム２３のアウトボード側端部に設けられたボールジョイントを結ぶ仮想直線は、転舵軸線Ｋを構成する。 A virtual straight line connecting the ball joint 24 provided at the end of the upper arm 22 on the outboard side and the ball joint provided at the end of the lower arm 23 on the outboard side constitutes the turning axis K.
　次にインホイールモータ駆動装置１１のケーブル類につき説明する。 Next, the cables of the in-wheel motor drive device 11 will be described.
　本実施形態では、３本の動力線２６と、１本の信号線２７と、１本のブリーザホース２８を備える。動力線２６は、金属製撚り線を非導電体で被覆した可撓性の電力ケーブルであり、屈曲可能である。本実施形態ではモータ部１１Ａに三相交流電力（Ｕ相、Ｖ相、Ｗ相）を供給するため、３本の動力線２６を備える。 In the present embodiment, three power lines 26, one signal line 27, and one breather hose 28 are provided. The power line 26 is a flexible power cable in which a metal stranded wire is covered with a non-conductor, and can be bent. In the present embodiment, three power lines 26 are provided to supply three-phase AC power (U phase, V phase, W phase) to the motor unit 11A.
　信号線２７は、インホイールモータ駆動装置１１に内蔵されるセンサからの信号を車体側へ送信する。また信号線２７は、動力線２６の金属製撚り線よりも細い金属製撚り線を非導電体で被覆した可撓性の電力ケーブルであり、動力線２６よりも小径であることから、動力線２６よりも小さい半径で屈曲可能である。また信号線２７は、繰り返し屈伸することによる疲れ疲労に関し、動力線２６よりも耐久性に優れる。 The signal line 27 transmits a signal from a sensor built in the in-wheel motor drive device 11 to the vehicle body side. Further, the signal line 27 is a flexible power cable in which a metal stranded wire thinner than the metal stranded wire of the power line 26 is covered with a non-conductor, and has a smaller diameter than the power line 26. It can be bent with a radius smaller than 26. Further, the signal line 27 is superior to the power line 26 in terms of fatigue due to repeated bending and stretching.
　ブリーザホース２８は、インホイールモータ駆動装置１１の内圧を大気圧に近づけるために設けられ、可撓性を有する中空のゴムホースである。またブリーザホース２８は、繰り返し屈伸することによる疲れ疲労に関し、信号線２７よりも耐久性に優れる。 The breather hose 28 is a hollow rubber hose that is provided to bring the internal pressure of the in-wheel motor drive device 11 close to atmospheric pressure and has flexibility. Further, the breather hose 28 is superior to the signal line 27 in terms of fatigue due to repeated bending and stretching.
　動力線２６、信号線２７、およびブリーザホース２８は、図１に示すようにナックルアーム１３に沿って配線される。動力線２６、信号線２７、およびブリーザホース２８は、車体パネル１０１（図３）からナックルアーム１３の先端部１３ｎまで架け渡され、さらにナックルアーム１３に沿って配線され、端子ボックス１１Ｔに引き込まれる。 The power line 26, the signal line 27, and the breather hose 28 are wired along the knuckle arm 13 as shown in FIG. The power line 26, the signal line 27, and the breather hose 28 are bridged from the vehicle body panel 101 (FIG. 3) to the tip end portion 13n of the knuckle arm 13, and further wired along the knuckle arm 13 and drawn into the terminal box 11T. .
　動力線２６、信号線２７、およびブリーザホース２８は、図３に示すように車体パネル１０１および先端部１３ｎ間で、パネル円筒部３１と、コルゲートチューブ４１と、アーム円筒部５１の中に順次通され、外方空間から遮断される。また動力線２６、信号線２７、およびブリーザホース２８は、ナックルアーム１３に沿って延びる区間で、カバー６６，６７に覆われ、外方空間から遮断される。これにより動力線２６、信号線２７、およびブリーザホース２８は全長に亘り、飛来する小石等の異物から物理的に保護される。 As shown in FIG. 3, the power line 26, the signal line 27, and the breather hose 28 are sequentially passed through the panel cylindrical portion 31, the corrugated tube 41, and the arm cylindrical portion 51 between the vehicle body panel 101 and the tip end portion 13 n. And is cut off from the outer space. Further, the power line 26, the signal line 27, and the breather hose 28 are sections that extend along the knuckle arm 13 and are covered by the covers 66 and 67 and are blocked from the outer space. Thereby, the power line 26, the signal line 27, and the breather hose 28 are physically protected from foreign objects such as flying pebbles over the entire length.
　図５はアーム円筒部５１を取り出し、動力線２６とともに示す正面図である。図６はアーム円筒部５１を取り出して示す側面図である。アーム円筒部５１は、硬質の金属製部材であって、円筒体を２分割してなる第１半円筒部５１ａおよび第２半円筒部５１ｂを含む。第１半円筒部５１ａの一端にはアーチ部５４が連続して形成される。アーチ部５４は２本の脚部５５，５５を有し、これら脚部５５，５５間に第２半円筒部５１ｂが嵌込固定される。 FIG. 5 is a front view showing the arm cylindrical portion 51 taken out together with the power line 26. FIG. 6 is a side view showing the arm cylindrical portion 51 taken out. The arm cylindrical part 51 is a hard metal member, and includes a first semi-cylindrical part 51a and a second semi-cylindrical part 51b formed by dividing the cylindrical body into two parts. An arch portion 54 is continuously formed at one end of the first semi-cylindrical portion 51a. The arch portion 54 has two leg portions 55, 55, and the second semi-cylindrical portion 51 b is fitted and fixed between the leg portions 55, 55.
　アーム円筒部５１を構成する２個の半円筒部は、図７に示すように分解される。第１半円筒部５１ａおよびアーチ部５４に沿って動力線２６、信号線２７、およびブリーザホース２８を入れ込み、次に第２半円筒部５１ｂを嵌め込むことにより、動力線２６、信号線２７、およびブリーザホース２８はアーム円筒部５１に通される。これらのケーブル類を通されたアーム円筒部５１は、１対の脚部５５，５５をナックルアーム１３の先端部１３ｎに結合するようにして、ナックルアーム１３に取付固定される（図２）。アーチ部５４は動力線２６、信号線２７、およびブリーザホース２８を覆う保護部材である。なおアーチ部５４は図７に示すように第１半円筒部５１ａと一体に形成されるが、図示しない変形例として、アーチ部５４は第１半円筒部５１ａと別部材であって、互いに連結されるものであってもよい。 The two semi-cylindrical parts constituting the arm cylindrical part 51 are disassembled as shown in FIG. By inserting the power line 26, the signal line 27, and the breather hose 28 along the first semi-cylindrical part 51a and the arch part 54, and then fitting the second semi-cylindrical part 51b, the power line 26, the signal line 27, The breather hose 28 is passed through the arm cylindrical portion 51. The arm cylindrical portion 51 through which these cables are passed is attached and fixed to the knuckle arm 13 so that the pair of leg portions 55 and 55 are coupled to the tip end portion 13n of the knuckle arm 13 (FIG. 2). The arch portion 54 is a protective member that covers the power line 26, the signal line 27, and the breather hose 28. The arch portion 54 is formed integrally with the first semi-cylindrical portion 51a as shown in FIG. 7, but as a modification (not shown), the arch portion 54 is a separate member from the first semi-cylindrical portion 51a and is connected to each other. It may be done.
　コルゲートチューブ４１は可撓性を有する保護チューブである。またコルゲートチューブ４１は樹脂からなる蛇腹状チューブであるため、屈曲自在でありながらも適度の保形性を有し、小石の飛来程度の衝撃に対し陥没しない。コルゲートチューブ４１には、一端から他端まで延びる切れ目が形成される。かかる切れ目を開くようにコルゲートチューブ４１を弾性変形させると、車体パネル１０１からナックルアーム１３まで延びる動力線２６、信号線２７、およびブリーザホース２８をコルゲートチューブ４１の中に入れ込むことができる。そしてコルゲートチューブ４１の一端をアーム円筒部５１に差し込む（図４）。 The corrugated tube 41 is a flexible protective tube. Further, since the corrugated tube 41 is a bellows-like tube made of a resin, the corrugated tube 41 is flexible but has an appropriate shape retaining property and does not sink against an impact of a flying pebbles. The corrugated tube 41 is formed with a cut extending from one end to the other end. When the corrugated tube 41 is elastically deformed so as to open such a break, the power line 26, the signal line 27, and the breather hose 28 extending from the vehicle body panel 101 to the knuckle arm 13 can be inserted into the corrugated tube 41. Then, one end of the corrugated tube 41 is inserted into the arm cylindrical portion 51 (FIG. 4).
　図３および図４に示すようにコルゲートチューブ４１の一端がアーム円筒部５１の外周を覆うように差し込まれた状態で、コルゲートチューブ４１の一端外周面にはバンド６１が巻き付けられる。バンド６１は図８に示すような公知のものでよく、バンド６１に附設されたねじ６２を締め付け回転することにより縮径して、コルゲートチューブ４１の一端外周面を締め付ける。これによりコルゲートチューブ４１の一端はアーム円筒部５１から抜け出さないよう強固に固定される。 3 and 4, the band 61 is wound around the outer peripheral surface of one end of the corrugated tube 41 with the one end of the corrugated tube 41 inserted so as to cover the outer periphery of the arm cylindrical portion 51. The band 61 may be a known one as shown in FIG. 8, and the diameter is reduced by tightening and rotating a screw 62 attached to the band 61, and the outer peripheral surface of one end of the corrugated tube 41 is tightened. Accordingly, one end of the corrugated tube 41 is firmly fixed so as not to come out of the arm cylindrical portion 51.
　本実施形態によれば、アーム円筒部５１はコルゲートチューブ４１よりも硬質であり、バンド６１によって締め付けられても変形しない。このため、アーム円筒部５１は内径寸法を保持したままであり、アーム円筒部５１の内周面および動力線２６間に隙間Ｇを残したままにされる（図５）。したがって複数本のケーブル類がきつく縛られて細くなるということがなく、インホイールモータ駆動装置１１の転舵時に、ケーブル類がきつく縛られた箇所のみで屈伸を繰り返すという懸念が生じない。なお図示はしなかったが、隙間Ｇをプラスチックあるいはスポンジに置き換えて、各動力線２６を支持してもよい。 According to the present embodiment, the arm cylindrical portion 51 is harder than the corrugated tube 41 and does not deform even when tightened by the band 61. For this reason, the arm cylindrical part 51 keeps the inner diameter dimension, and the gap G is left between the inner peripheral surface of the arm cylindrical part 51 and the power line 26 (FIG. 5). Therefore, a plurality of cables are not tightly tied and thinned, and there is no concern that the in-wheel motor drive device 11 repeats bending and stretching only at the place where the cables are tightly tied. Although not shown in the figure, the power line 26 may be supported by replacing the gap G with plastic or sponge.
　上述したアーム円筒部５１の外周面は、軸方向に亘り一定である（図６）。この他、第１変形例として図９の正面図および図１０の側面図に示すように、アーム円筒部５１の外周面にフランジ５２を設けてもよい。アーム円筒部５１の一端は、ナックルアーム１３側を根元側としてアーチ部５４に結合する。これに対しアーム円筒部５１の他端は、コルゲートチューブ４１が差し込まれる先端側となる。そしてアーム円筒部５１の先端外周面にフランジ５２が一体形成される。これによりアーム円筒部５１の外周面は、先端部分（フランジ５２）において大径にされ、中央部から根元部までの根元領域５６において小径にされる（図１０）。 The outer peripheral surface of the arm cylindrical part 51 described above is constant over the axial direction (FIG. 6). In addition, as shown in the front view of FIG. 9 and the side view of FIG. 10 as a first modification, a flange 52 may be provided on the outer peripheral surface of the arm cylindrical portion 51. One end of the arm cylindrical portion 51 is coupled to the arch portion 54 with the knuckle arm 13 side as the root side. On the other hand, the other end of the arm cylindrical portion 51 is a tip side into which the corrugated tube 41 is inserted. A flange 52 is integrally formed on the outer peripheral surface of the tip of the arm cylindrical portion 51. As a result, the outer peripheral surface of the arm cylindrical portion 51 has a large diameter at the distal end portion (flange 52) and a small diameter in the root region 56 from the central portion to the root portion (FIG. 10).
　図９および図１０に示す第１変形例のアーム円筒部５１によれば、根元領域５６と同じ軸方向位置にバンド６１を取り付けることにより、コルゲートチューブ４１の一端はフランジ５２の外径よりも小さい径にされる。これによりコルゲートチューブ４１の一端はアーム円筒部５１から抜け出さないよう一層強固に固定される。 According to the arm cylindrical portion 51 of the first modification shown in FIGS. 9 and 10, one end of the corrugated tube 41 is smaller than the outer diameter of the flange 52 by attaching the band 61 at the same axial position as the root region 56. It is made a diameter. Thereby, one end of the corrugated tube 41 is fixed more firmly so as not to come out of the arm cylindrical portion 51.
　この他、第２変形例として図１１の正面図および図１２の側面図に示すように、アーム円筒部５１の外周面をテーパ状にしてもよい。コルゲートチューブ４１が差し込まれるアーム円筒部５１の外周面５３は、コルゲートチューブ４１の差し込み方向、すなわちアーム円筒部５１の先端側から根元側、に向かうにつれて小径となるようテーパ状に形成される。 In addition, as shown in the front view of FIG. 11 and the side view of FIG. 12 as a second modification, the outer peripheral surface of the arm cylindrical portion 51 may be tapered. The outer peripheral surface 53 of the arm cylindrical part 51 into which the corrugated tube 41 is inserted is formed in a taper shape so that the diameter decreases in the insertion direction of the corrugated tube 41, that is, from the distal end side to the root side of the arm cylindrical part 51.
　図１１および図１２に示す第２変形例のアーム円筒部５１によれば、アーム円筒部５１の根元側外周面５３ｒにバンド６１を取り付けることにより、コルゲートチューブ４１の一端はアーム円筒部５１の先端側外周面５３ｓよりも小さい径にされる。これによりコルゲートチューブ４１の一端はアーム円筒部５１から抜け出さないよう一層強固に固定される。 According to the arm cylindrical portion 51 of the second modification shown in FIGS. 11 and 12, one end of the corrugated tube 41 is attached to the tip of the arm cylindrical portion 51 by attaching the band 61 to the base side outer peripheral surface 53 r of the arm cylindrical portion 51. The diameter is smaller than the side outer peripheral surface 53s. Thereby, one end of the corrugated tube 41 is fixed more firmly so as not to come out of the arm cylindrical portion 51.
　この他、第３変形例として図１３の正面図および図１４の側面図に示すように、第１半円筒部５１ａはアーム円筒部５１の根元側に指向する突合面５８を有してもよい。さらに第１半円筒部５１ａは、軸方向に延びる突合面５７，５９を有する。突合面５７，５８，５９はクランク状に連続して細長く延びる（図１４）。第２半円筒部５１ｂは、第１半円筒部５１ａの突合面５７，５８，５９に対応する形状の突合面を有する。そして第２半円筒部５１ｂの対応突合面を、第１半円筒部５１ａの突合面５７，５８，５９に突き合わせてアーム円筒部５１を組み立てる。 In addition, as shown in the front view of FIG. 13 and the side view of FIG. 14 as a third modification, the first semi-cylindrical portion 51 a may have a butting surface 58 directed toward the base side of the arm cylindrical portion 51. . Further, the first semi-cylindrical portion 51a has abutting surfaces 57 and 59 extending in the axial direction. The abutting surfaces 57, 58, 59 extend in an elongated manner continuously in a crank shape (FIG. 14). The second semicylindrical portion 51b has a mating surface having a shape corresponding to the mating surfaces 57, 58, 59 of the first semicylindrical portion 51a. Then, the corresponding abutting surface of the second semi-cylindrical portion 51b is abutted against the abutting surfaces 57, 58, 59 of the first semi-cylindrical portion 51a, and the arm cylindrical portion 51 is assembled.
　図１３および図１４に示す第３変形例のアーム円筒部５１によれば、第２半円筒部５１ｂの対応突合面が、第１半円筒部５１ａの突合面５８とアーチ部５４との間に入り込み軸方向移動を規制される。しかも第２半円筒部５１ｂは、突合面５８に突合してインホイールモータ駆動装置１１のナックルアーム１３から離れないよう軸方向に抜け止めされる。 According to the arm cylindrical portion 51 of the third modification shown in FIGS. 13 and 14, the corresponding abutting surface of the second semicylindrical portion 51 b is between the abutting surface 58 of the first semicylindrical portion 51 a and the arch portion 54. The movement in the axial direction is restricted. Moreover, the second semi-cylindrical portion 51b is abutted against the abutting surface 58 and is prevented from coming off in the axial direction so as not to be separated from the knuckle arm 13 of the in-wheel motor drive device 11.
　なお最初に説明した実施形態、第１変形例、および第２変形例では、アーム円筒部５１の周方向２箇所に形成される突合面が、軸方向のみ延びているが、根元側に指向する突合面５８を附加してもよいこと勿論である。 In the first embodiment, the first modified example, and the second modified example, the abutting surfaces formed at two locations in the circumferential direction of the arm cylindrical portion 51 extend only in the axial direction, but are directed toward the root side. Of course, a butt surface 58 may be added.
　この他、第４変形例として図１４の正面図および図１５の側面図に示すように、アーム円筒部５１の周方向一箇所のみに切れ目６０を形成し、第１半円筒部５１ａと第２半円筒部５１ｂを周方向一箇所で連続させてもよい。第４変形例のアーム円筒部５１はコルゲートチューブ４１よりも硬質であって、かつ若干の弾性変形可能な素材、例えばプラスチック、で作成される。第４変形例の切れ目６０は、アーチ部５４の隣接部分まで延び、隣接する脚部５５を分断する。そして分断された脚先端部５５ｂは、第２半円筒部５１ｂを介してアーチ部５４と一体に形成される。 In addition, as shown in the front view of FIG. 14 and the side view of FIG. 15 as a fourth modification, a cut 60 is formed only in one circumferential direction of the arm cylindrical portion 51, and the first semicylindrical portion 51a and the second The semi-cylindrical part 51b may be continued at one place in the circumferential direction. The arm cylindrical portion 51 of the fourth modified example is made of a material that is harder than the corrugated tube 41 and can be elastically deformed, for example, plastic. The cut 60 of the fourth modification extends to an adjacent portion of the arch portion 54 and divides the adjacent leg portion 55. The divided leg tip portion 55b is formed integrally with the arch portion 54 via the second semi-cylindrical portion 51b.
　図１５および図１６に示す第４変形例のアーム円筒部５１によれば、第１半円筒部５１ａと第２半円筒部５１ｂが周方向一箇所で連続することから、第１半円筒部５１ａと第２半円筒部５１ｂが分離しない。なお動力線２６等のケーブル類は、切れ目６０を押し広げることにより、アーム円筒部５１の中に通される。 According to the arm cylindrical portion 51 of the fourth modification shown in FIGS. 15 and 16, the first semi-cylindrical portion 51a is continuous with the first semi-cylindrical portion 51a and the second semi-cylindrical portion 51b at one place in the circumferential direction. And the second semi-cylindrical portion 51b are not separated. The cables such as the power line 26 are passed through the arm cylindrical portion 51 by expanding the cut 60.
　説明を最初の実施形態に戻すと、図３および図４に示すパネル円筒部３１も、アーム円筒部５１と同様に、コルゲートチューブ４１の他端が接続固定される。 Returning to the description of the first embodiment, the other end of the corrugated tube 41 is also connected and fixed to the panel cylindrical portion 31 shown in FIG. 3 and FIG.
　図１７はパネル円筒部３１を取り出し、動力線とともに示す正面図である。図１８はパネル円筒部３１を取り出して示す平面図である。パネル円筒部３１は、硬質の金属製部材であって、円筒体を２分割してなる第１半円筒部３１ａおよび第２半円筒部３１ｂを含む。第１半円筒部３１ａの中央部にはフランジ３３ａが形成され、第２半円筒部３１ｂの中央部にはフランジ３３ｂが形成される。これらフランジ３３ａ，３３ｂの裏面にはＣ字状の連結具３２が固定される。これにより第１半円筒部３１ａおよび第２半円筒部３１ｂは円筒形状を保持する。 FIG. 17 is a front view showing the panel cylindrical portion 31 taken out together with the power lines. FIG. 18 is a plan view showing the panel cylindrical portion 31 taken out. The panel cylindrical portion 31 is a hard metal member, and includes a first semi-cylindrical portion 31a and a second semi-cylindrical portion 31b formed by dividing the cylindrical body into two. A flange 33a is formed at the center of the first semi-cylindrical portion 31a, and a flange 33b is formed at the center of the second semi-cylindrical portion 31b. A C-shaped connector 32 is fixed to the rear surfaces of the flanges 33a and 33b. Thereby, the first semi-cylindrical portion 31a and the second semi-cylindrical portion 31b maintain a cylindrical shape.
　パネル円筒部３１を構成する２個の半円筒部は、図１９に示すように分解される。動力線２６、信号線２７、およびブリーザホース２８を束ねるように、両側から第１半円筒部３１ａおよび第２半円筒部３１ｂで覆うことにより、動力線２６、信号線２７、およびブリーザホース２８はパネル円筒部３１に通される（図１７）。これらのケーブル類を通されたパネル円筒部３１は車体パネル１０１の表面に固定される。具体的には、１対のフランジ３３ａ，３３ｂの裏面に取付固定された連結具３２の各貫通孔３４に、ボルトを差し込み、各ボルトを車体パネル１０１の雌ねじ孔（図示せず）に螺着する。あるいは連結具３２はパネル円筒部３１に同軸配置されて裏面側へ突出するＣ字状のグロメット３８を含み、グロメット３８は車体パネル１０１の下孔に嵌合する。ケーブル類が通されたパネル円筒部３１には、コルゲートチューブ４１の他端が差し込まれる（図４）。車体パネル１０１は、車体フレーム（図示せず）に取付固定された車体側メンバである。 The two semi-cylindrical parts constituting the panel cylindrical part 31 are disassembled as shown in FIG. By covering the power line 26, the signal line 27, and the breather hose 28 from both sides with the first semi-cylindrical part 31a and the second semi-cylindrical part 31b, the power line 26, the signal line 27, and the breather hose 28 are It passes through the panel cylindrical portion 31 (FIG. 17). The panel cylindrical portion 31 through which these cables are passed is fixed to the surface of the vehicle body panel 101. Specifically, bolts are inserted into the through holes 34 of the connector 32 attached and fixed to the back surfaces of the pair of flanges 33a and 33b, and the bolts are screwed into female screw holes (not shown) of the vehicle body panel 101. To do. Alternatively, the connector 32 includes a C-shaped grommet 38 that is coaxially disposed on the panel cylindrical portion 31 and protrudes toward the back surface side, and the grommet 38 is fitted into the lower hole of the vehicle body panel 101. The other end of the corrugated tube 41 is inserted into the panel cylindrical portion 31 through which the cables are passed (FIG. 4). The vehicle body panel 101 is a vehicle body side member attached and fixed to a vehicle body frame (not shown).
　コルゲートチューブ４１の他端がパネル円筒部３１の外周を覆うように差し込まれた状態で、コルゲートチューブ４１の他端外周面には、前述したバンド６１が巻き付けられる。これによりコルゲートチューブ４１の他端はパネル円筒部３１から抜け出さないよう強固に固定される。 The band 61 described above is wound around the outer peripheral surface of the other end of the corrugated tube 41 in a state where the other end of the corrugated tube 41 is inserted so as to cover the outer periphery of the panel cylindrical portion 31. Accordingly, the other end of the corrugated tube 41 is firmly fixed so as not to come out of the panel cylindrical portion 31.
　上述したパネル円筒部３１の外周面は、軸方向に亘り一定である（図１８）。この他、第１変形例として図２０の正面図および図２１の平面図に示すように、パネル円筒部３１の外周面にフランジ３５を設けてもよい。フランジ３５を備えるパネル円筒部３１の作用効果は、前述した第１変形例のアーム円筒部５１（図９，１０）と同様である。 The outer peripheral surface of the panel cylindrical portion 31 described above is constant over the axial direction (FIG. 18). In addition, as shown in the front view of FIG. 20 and the plan view of FIG. 21 as a first modification, a flange 35 may be provided on the outer peripheral surface of the panel cylindrical portion 31. The effect of the panel cylindrical portion 31 including the flange 35 is the same as that of the arm cylindrical portion 51 (FIGS. 9 and 10) of the first modification described above.
　この他、第２変形例として図２２の正面図および図２３の平面図に示すように、パネル円筒部３１の外周面をテーパ状にしてもよい。コルゲートチューブ４１が差し込まれるパネル円筒部３１の外周面３６は、コルゲートチューブ４１の差し込み方向、すなわちパネル円筒部３１の先端側から根元側、に向かうにつれて小径となるようテーパ状に形成される。テーパ状の外周面３６を備えるパネル円筒部３１の作用効果は、前述した第２変形例のアーム円筒部５１（図１１，１２）と同様である。 In addition, as shown in the front view of FIG. 22 and the plan view of FIG. 23 as a second modification, the outer peripheral surface of the panel cylindrical portion 31 may be tapered. The outer peripheral surface 36 of the panel cylindrical portion 31 into which the corrugated tube 41 is inserted is formed in a taper shape so that the diameter decreases in the insertion direction of the corrugated tube 41, that is, from the distal end side to the root side of the panel cylindrical portion 31. The operational effect of the panel cylindrical portion 31 having the tapered outer peripheral surface 36 is the same as that of the arm cylindrical portion 51 (FIGS. 11 and 12) of the second modification described above.
　以上、図面を参照してこの発明の実施の形態を説明したが、この発明は、図示した実施の形態のものに限定されない。図示した実施の形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。 The embodiment of the present invention has been described above with reference to the drawings, but the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.
　この発明になるインホイールモータ駆動装置は、電気自動車およびハイブリッド車両において有利に利用される。 The in-wheel motor drive device according to the present invention is advantageously used in electric vehicles and hybrid vehicles.
　１１　インホイールモータ駆動装置、　１１Ｔ　端子ボックス、　１２Ｍ　ハブ輪、　１２Ｓ　軸部、　１３　ナックルアーム、　１３ｌ　根元部、　１３ｍ　中間部、　１３ｎ　先端部、　２２　アッパアーム、　２３　ロアアーム、　２４　ボールジョイント、　２６　動力線、　２７　信号線、　２８　ブリーザホース、　３１　パネル円筒部、　３１ａ　第１半円筒部、　３１ｂ　第２半円筒部、　３２　連結具、　３３ａ，３３ｂ　フランジ、　３６　外周面、　４１　コルゲートチューブ（保護チューブ）、　５１　アーム円筒部、　５４　アーチ部、　５５　脚部、　５７，５８，５９　突合面、　６０　切れ目、　６１　バンド、　６２　ねじ、　６６，６７　カバー、　１０１　車体パネル、　Ｗ　車輪。 11 In-wheel motor drive device, 11T terminal box, 12M hub wheel, 12S shaft, 13 knuckle arm, 13l root, 13m middle, 13n tip, 22 upper arm, 23 lower arm, 24 ball joint, 26 power line, 27 Signal line, 28 breather hose, 31 panel cylindrical part, 31a first semi-cylindrical part, 31b second semi-cylindrical part, 32 coupler, 33a, 33b flange, 36 outer peripheral surface, 41 corrugated tube (protective tube), 51 arm cylinder Part, 54 arch part, 55 leg part, 57, 58, 59 abutting surface, 60 cut, 61 band, 62 screw, 66, 67 cover, 101 body panel, W wheel.

Claims (7)

  1. 　一端側がインホイールモータ駆動装置に接続され、他端側が車体側メンバに接続される可撓性の複数本の動力線と、
    　前記インホイールモータ駆動装置および前記車体側メンバの少なくとも一方に固定されて、前記動力線の一端側または他端側が通される円筒部と、
    　前記複数本の動力線を一端側から他端側まで覆い、端部に前記円筒部が差し込まれる可撓性の保護チューブと、
    　前記保護チューブの端部外周面に巻き付き、前記円筒部の内径寸法を保持したまま前記保護チューブの端部を前記円筒部の外周面に固定するバンドとを備える、保護チューブの固定構造。     A plurality of flexible power lines having one end connected to the in-wheel motor drive device and the other end connected to the vehicle body member;
    A cylindrical portion that is fixed to at least one of the in-wheel motor drive device and the vehicle body side member, and through which one end side or the other end side of the power line passes;
    A flexible protective tube that covers the plurality of power lines from one end side to the other end side and into which the cylindrical portion is inserted;
    A protective tube fixing structure comprising: a band that wraps around the outer peripheral surface of the end portion of the protective tube and fixes the end portion of the protective tube to the outer peripheral surface of the cylindrical portion while maintaining the inner diameter dimension of the cylindrical portion.
  2. 　前記円筒部は、周方向に分割された第１半円筒部および第２半円筒部を組み合わせてなる、請求項１に記載の保護チューブの固定構造。 The protective tube fixing structure according to claim 1, wherein the cylindrical portion is a combination of a first semi-cylindrical portion and a second semi-cylindrical portion that are divided in the circumferential direction.
  3. 　前記第１半円筒部の軸方向一方側は、前記インホイールモータ駆動装置および／または前記車体側メンバに設けられて前記動力線を覆う保護部材と結合し、
    　前記第１半円筒部の軸方向他方側は、前記保護チューブ内に差し込まれ、
    　前記第１半円筒部は、前記保護部材に指向する突合面を有し、
    　前記第２半円筒部は、前記突合面に突合して前記保護部材から離れないよう軸方向に抜け止めされる、請求項２に記載の保護チューブの固定構造。     One side in the axial direction of the first semi-cylindrical portion is coupled to a protective member that is provided on the in-wheel motor drive device and / or the vehicle body side member and covers the power line,
    The other axial side of the first semi-cylindrical part is inserted into the protective tube,
    The first semi-cylindrical part has a butting surface directed to the protection member,
    3. The protective tube fixing structure according to claim 2, wherein the second semi-cylindrical portion is prevented from coming off in an axial direction so as to abut against the abutting surface and not to be separated from the protective member.
  4. 　前記円筒部の周方向一箇所には切れ目が形成され、前記円筒部は前記切れ目を開くように弾性変形可能である、請求項１に記載の保護チューブの固定構造。 2. The protective tube fixing structure according to claim 1, wherein a cut is formed at one circumferential direction of the cylindrical portion, and the cylindrical portion is elastically deformable so as to open the cut.
  5. 　前記保護チューブの周方向一箇所には、保護チューブの一端から他端まで延びる切れ目が形成される、請求項１～４のいずれかに記載の保護チューブの固定構造。 The protective tube fixing structure according to any one of claims 1 to 4, wherein a cut extending from one end of the protective tube to the other end is formed at one circumferential direction of the protective tube.
  6. 　前記円筒部の軸方向一方側は、前記インホイールモータ駆動装置および／または前記車体側メンバに設けられて前記動力線を覆う保護部材と結合する根元部であって、
    　前記保護チューブ内に差し込まれる前記円筒部の軸方向先端部には、前記根元部よりも外径側に突出するフランジが設けられる、請求項１～５のいずれかに記載の保護チューブの固定構造。     One side of the cylindrical portion in the axial direction is a root portion that is coupled to a protective member that is provided on the in-wheel motor drive device and / or the vehicle body side member and covers the power line,
    The protective tube fixing structure according to any one of claims 1 to 5, wherein a flange projecting toward an outer diameter side of the root portion is provided at an axial end portion of the cylindrical portion inserted into the protective tube. .
  7. 　前記円筒部の軸方向一方側は、前記インホイールモータ駆動装置および／または前記車体側メンバに設けられて前記動力線を覆う保護部材と結合する根元部であって、
    　前記円筒部の外周面は、前記保護チューブ内に差し込まれる軸方向先端部から前記根元部に向かうにつれて小径となるようテーパ状に形成される、請求項１～５のいずれかに記載の保護チューブの固定構造。     One side of the cylindrical portion in the axial direction is a root portion that is coupled to a protective member that is provided on the in-wheel motor drive device and / or the vehicle body side member and covers the power line,
    The protective tube according to any one of claims 1 to 5, wherein an outer peripheral surface of the cylindrical portion is formed in a tapered shape so as to have a smaller diameter from an axial front end portion inserted into the protective tube toward the root portion. Fixed structure.
PCT/JP2015/075166 2014-09-16 2015-09-04 Affixation structure for protective tube WO2016043064A1 (en)

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JP2014187964A JP6371650B2 (en) 2014-09-16 2014-09-16 Protective tube fixing structure

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JPH10210634A (en) * 1996-11-25 1998-08-07 Nippon Cable Syst Inc Device for fixing terminal of control cable or the like
JP2006027529A (en) * 2004-07-20 2006-02-02 Toyota Motor Corp Vehicular electric driving device, and car having the same
JP2007299819A (en) * 2006-04-28 2007-11-15 Hitachi Cable Ltd Electric cable with metal fitting
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CN110335726A (en) * 2019-06-21 2019-10-15 岳阳高澜节能装备制造有限公司 A kind of discharging device for cable winds pipe packing technology
CN110335726B (en) * 2019-06-21 2024-02-06 岳阳高澜节能装备制造有限公司 Discharging device for cable winding tube wrapping process

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