WO2023032447A1 - インホイールモータ - Google Patents
インホイールモータ Download PDFInfo
- Publication number
- WO2023032447A1 WO2023032447A1 PCT/JP2022/026017 JP2022026017W WO2023032447A1 WO 2023032447 A1 WO2023032447 A1 WO 2023032447A1 JP 2022026017 W JP2022026017 W JP 2022026017W WO 2023032447 A1 WO2023032447 A1 WO 2023032447A1
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- WIPO (PCT)
- Prior art keywords
- housing
- wheel motor
- stator
- wheel
- rotor
- Prior art date
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- 239000000725 suspension Substances 0.000 claims abstract description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000004323 axial length Effects 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the present invention relates to an in-wheel motor that drives the wheels of a vehicle.
- Patent Literature 1 discloses a wheel to which a tire is attached, and an in-wheel motor that is coaxially arranged with the wheel via an axle to drive the wheel.
- a motor that drives the wheels is housed inside a motor case.
- a stator is fixed to the motor case, and a rotor is provided inside the stator.
- a planetary gear reducer is housed inside the rotor. Rotation of the rotor is decelerated by the speed reducer and then transmitted to the axle to drive the wheel.
- the distance between the intersection of the kingpin axis, which is the center of rotation for steering, and the tire contact surface, and the centerline in the width direction of the tire (scrub radius) ) is preferably reduced.
- the in-wheel motor is arranged so as to protrude toward the vehicle from the center line in the width direction of the wheel on which the tire is mounted.
- An object of the present invention is to solve the above problems and to provide an in-wheel motor that can improve steering operability and ride comfort of a vehicle.
- the present invention provides an in-wheel motor that includes a motor at least partially disposed inside a wheel for transmitting power to the wheel, the in-wheel motor being supported by a vehicle by a suspension device, wherein the motor comprises a stator and a rotor disposed inside the stator and having a rotating shaft, the stator includes a stator housing with one side open and a stator housing cover closing the open portion of the stator housing, the stator housing comprising: A cylindrical housing annular portion extending in the axial direction, a housing flat plate portion extending in a radial direction perpendicular to the axial direction, a folded portion extending in the axial direction and having one end connected to the housing flat plate portion, and a folded portion perpendicular to the axial direction.
- the stator housing includes a flange portion having one end connected to the other end of the folded portion and the other end connected to the housing annular portion. is formed in the radially central portion of the housing concave portion, and is fixed to the housing flat plate portion and provided with a hub bearing mounting portion for mounting a hub bearing; the wheel is fixed to the hub bearing via a hub bolt;
- the stator housing cover has an upper arm mounting portion for mounting an upper arm of the suspension device and a lower arm mounting portion for mounting a lower arm.
- an in-wheel motor that can improve steering operability and ride comfort of a vehicle.
- FIG. 1 is an exploded perspective view of a suspension device, an in-wheel motor, and wheels according to an embodiment of the present invention
- FIG. 1 is an exploded perspective view of a suspension device, an in-wheel motor, and a wheel in a state where the suspension device and the in-wheel motor according to the embodiment of the present invention are assembled
- FIG. 1 is a perspective view of a state in which a suspension device and an in-wheel motor according to an embodiment of the present invention are assembled
- FIG. 1 is a perspective view of a suspension device, an in-wheel motor, and a wheel assembled according to an embodiment of the present invention
- FIG. It is the front view which looked at the in-wheel motor concerning the example of the present invention from the wheel side.
- FIG. 1 is an exploded perspective view of a suspension device, an in-wheel motor, and wheels according to an embodiment of the present invention
- FIG. 1 is an exploded perspective view of a suspension device, an in-wheel motor, and wheels according to an embodiment of the present invention
- FIG. 1 is
- FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5;
- FIG. 1 is a cross-sectional perspective view of a part of an in-wheel motor according to an embodiment of the present invention, viewed obliquely from below the wheel side;
- FIG. 5 is a cross-sectional view taken along line VIII-VIII of FIG. 4;
- constituent elements of the present invention do not necessarily have to be independent entities, and one constituent element may consist of a plurality of members, a plurality of constituent elements may consist of one member, a certain constituent element may part of a component, part of one component overlaps part of another component, and so on.
- FIG. 1 is an exploded perspective view of a suspension device, an in-wheel motor, and wheels according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of the suspension device, the in-wheel motor, and the wheel in a state where the suspension device and the in-wheel motor according to the embodiment of the present invention are assembled.
- FIG. 3 is a perspective view showing a state in which the suspension device and the in-wheel motor according to the embodiment of the present invention are assembled.
- FIG. 4 is a perspective view of a suspension device, an in-wheel motor, and wheels assembled according to an embodiment of the present invention.
- 1 to 4 show only one wheel. If the vehicle has four wheels, at least one wheel can be provided with an in-wheel motor.
- the wheel 10 includes a wheel 11 and a tire 12 attached to the outer circumference of the wheel 11.
- the wheel 11 is composed of a plurality of spokes 13 radially extending radially outward from a central portion, and a rim 14 joined to the spokes 13 .
- a tire 12 is attached to the outer circumference of the rim 14 .
- the spokes 13 are offset in the width direction of the rim 14 so as to be positioned on the vehicle outer side.
- An in-wheel motor 20 that drives the wheels 10 to rotate is connected to the wheels 11 . At least a portion of the in-wheel motor 20 is arranged inside the wheel 11 .
- the in-wheel motor 20 of this embodiment is intended to drive the wheels housed inside the wheel 11 .
- the in-wheel motor 20 has an inner rotor system and an outer rotor system, and furthermore, there are those provided with a reduction gear and those without a reduction gear, and can be broadly classified into four types.
- an inner rotor system without a reduction gear directly drive
- an outer rotor system may also be used.
- the in-wheel motor 20 includes a stator housing 21a that is open on one side in the axial direction, a rotor 22 that is inserted into the stator housing 21a from the open side of the stator housing 21a and rotates inside the stator housing 21a, and the stator 21 that is open.
- a stator housing cover 21b that closes the side, an inverter device 24 fixed to the stator housing cover 21b, a brake device 25 fixed to the side opposite to the open side of the stator housing 21a, and rotatably supported by the stator housing 21a, It has a brake disc 251 and a hub bearing 26 that rotates together with the wheel 10 .
- the hub bearing 26 is fixed to a hub bearing mounting portion 216 formed in the central portion of the stator housing 21a.
- the hub bearing 26 is provided with a plurality of (five in this embodiment) hub bolts 261 .
- Hub bolt 261 penetrates brake disc 251 .
- the wheel 10 is fixed to the hub bearing 26 by inserting a hub bolt 261 into a through hole of the wheel 11 and screwing a nut 262 (FIG. 8).
- the stator 21 is composed of the stator housing 21a and the stator housing cover 21b.
- the stator 21 supports an inverter device 24, a brake device 25, a hub bearing 26, and the like, and is attached to a suspension device 30 on the vehicle body side.
- the in-wheel motor 20 is supported by the vehicle body via the suspension device 30 .
- the suspension device 30 of this embodiment is an independent suspension type suspension installed on each wheel.
- the in-wheel motor 20 is supported by the vehicle body with an independent suspension.
- An independent suspension can improve the ability to follow uneven road surfaces, and can improve ride comfort and steering operability.
- the in-wheel motor 20 constitutes a motor that drives the wheel 11 (wheel 10) with a stator 21 (a stator housing 21a and a stator housing cover 21b) and a rotor 22 arranged inside the stator 21.
- the inverter device 24 supplies power to the motor.
- the distance between the intersection of the kingpin axis, which is the center of rotation for steering, and the tire contact surface, and the centerline in the width direction of the tire (scrub radius) ) is preferably reduced.
- the in-wheel motor is attached to the wheel, the axial direction of the in-wheel motor protrudes toward the vehicle body, the kingpin shaft is away from the center position of the tire, and the scrub radius tends to be large.
- the scrub radius becomes large, a large reaction force is applied to the steering mechanism during steering operation, and when driving on a rough road surface, the steering is likely to be caught by undulations and bumps in the road surface.
- the steered wheels also serve as drive wheels, the driving force becomes a rotational moment about the kingpin axis, which may deteriorate controllability and ride comfort. Therefore, it is preferable to reduce the axial length of the in-wheel motor. On the other hand, in order to improve the driving torque of the motor, it is preferable to increase the outer diameter of the motor. Means for solving these problems will be described below.
- FIG. 5 is a front view of the in-wheel motor according to the embodiment of the present invention as seen from the wheel side.
- FIG. 6 is a sectional view taken along line VI-VI of FIG.
- FIG. 7 is a cross-sectional perspective view of a part of the in-wheel motor according to the embodiment of the present invention, viewed obliquely from below the wheel side.
- the stator housing 21a is open on one side (the vehicle body side in this embodiment) in the axial direction.
- the stator housing 21a includes a cylindrical housing annular portion 21a1 extending in the axial direction, a housing flat plate portion 21a2 extending in the radial direction perpendicular to the axial direction, and a folded portion extending in the axial direction and having one end connected to the housing flat plate portion 21a2. and a flange portion 21a4 extending in a radial direction orthogonal to the axial direction and having one end connected to the other end of the folded portion 21a3 and the other end connected to the housing annular portion 21a1.
- the housing flat plate portion 21a2 is arranged from the position of the flange portion 21a4 (the end portion of the housing annular portion 21a1 opposite to the open portion side) to the open portion side (the vehicle body side in this embodiment) via the folded portion 21a3.
- the housing flat plate portion 21a2 is recessed from the position of the flange portion 21a4 (the end portion of the housing annular portion 21a1 opposite to the open portion side) toward the open portion side (the vehicle body side in this embodiment). That is, the stator housing 21a is formed with a housing recess 211 that is recessed from the position of the flange portion 21a4 (the end on the side opposite to the open portion) toward the open portion side.
- the housing concave portion 211 is formed by a housing flat plate portion 21a2 and a folded portion 21a3.
- the housing flat plate portion 21a2 is located closer to the opening side (the vehicle body side in this embodiment) than the center position in the axial direction of the housing annular portion 21a1.
- a plurality of stator cores 212 are arranged radially inside the housing annular portion 21a1 of the stator housing 21a, and stator coils 213 are mounted on the stator cores 212. As shown in FIG.
- a hub bearing mounting portion 216 fixed to the housing flat plate portion 21a2 is provided in the radially central portion of the housing recessed portion 211. As shown in FIG. A hub bearing 26 is attached to the inner periphery of the hub bearing attachment portion 216 . A portion of the hub bearing 26 is positioned within the housing recess 211 , so that when the wheel 11 is attached to the in-wheel motor 20 , the in-wheel motor 20 is accommodated within the wheel 11 .
- the stator housing cover 21b is arranged to close the open side of the stator housing 21a.
- the stator housing cover 21b includes a ring-shaped housing cover flange portion 21b4 extending in the radial direction perpendicular to the axial direction and positioned on the outer peripheral side, and a cylindrical housing cover extending in the axial direction and having one end connected to the housing cover flange portion 21b4. It is composed of an annular portion 21b1, a housing cover flat plate portion 21b2 connected to the other end of the housing cover annular portion 21b1 and extending in a radial direction orthogonal to the axial direction, and a rib 21b3 as a reinforcing member provided on the housing cover flat plate portion 21b2. It is The housing cover flange portion 21b4 is connected and fixed to the housing annular portion 21a1 of the stator housing 21a.
- the housing cover flat plate portion 21b2 When the stator housing cover 21b closes the open side of the stator housing 21a, the housing cover flat plate portion 21b2 is positioned on the side opposite to the open side (the wheel side in this embodiment) from the position of the housing cover flange portion 21b4. It is In other words, the housing cover flat plate portion 21b2 is recessed from the position of the housing cover flange portion 21b4 toward the side opposite to the open portion (the wheel side in this embodiment).
- the stator housing cover 21b is formed with a housing cover recess 215 that is recessed from the position of the housing cover flange portion 21b4 (end portion on the open portion side) toward the side opposite to the open portion. It is
- the housing cover flange portion 21b4 is connected and fixed to the housing annular portion 21a1 of the stator housing 21a. A space is formed inside the stator 21 .
- a rotor 22 that rotates the wheels is arranged in the space inside the stator 21 .
- the rotor 22 is provided with a rotating shaft 223 .
- the rotor 22 is composed of a cylindrical rotor housing 22a extending in the axial direction, and a rotor flat plate portion 22b extending in the radial direction perpendicular to the axial direction and provided with a rotating shaft 223.
- the rotor flat plate portion 22b is arranged closer to the vehicle body side from the axial center position of the rotor housing 22a. Therefore, the rotor housing 22a is arranged at a position overlapping the housing concave portion 211 in the radial direction.
- At least part of the hub bearing 26 is arranged at a position overlapping the rotor housing 22a in the radial direction.
- Two support portions 22c projecting radially outward are formed on the radially outer side of the rotor housing 22a.
- a plurality of permanent magnets 221 are provided on the radially outer side of the rotor housing 22a so as to be sandwiched between the support portions 22c. Permanent magnet 221 is arranged to face stator core 212 with a predetermined gap. Furthermore, a first bearing 222a and a second bearing 222b as motor bearings 222 that rotatably support the rotor 22 with respect to the stator 21 are provided on the radially outer side of the rotor housing 22a.
- the first bearing 222a is arranged on the vehicle body side, and the second bearing 222b is arranged on the wheel side opposite to the vehicle body side.
- the motor bearing 222 has rolling elements between the outer ring portion and the inner ring portion.
- a brake device 25 is attached to the stator housing 21a.
- the brake device 25 includes a rotor 22, a hub bearing 26, a brake disc 251 that rotates together with the wheel 11, and a brake caliper 252 that applies a frictional force to the brake disc 251 to brake the wheel.
- the brake device 25 operates in the same axial direction as the rotating shaft 223 of the motor.
- Electric brakes such as regenerative brakes and waste electricity brakes, are the main brake devices for vehicles that drive the wheels with a motor.
- Mechanical brakes include drum brakes and disc brakes. In order to improve the controllability of the braking device, this embodiment uses a disc brake as the mechanical brake.
- a portion of the brake device 25 is housed within the housing recess 211 of the stator housing 21a. As a result, the axial length of the in-wheel motor 20 can be shortened.
- a housing recess 211 of the stator housing 21a is provided with a plurality of ribs 214 (reinforcing members) that connect the folded portion 21a3 and the hub bearing mounting portion 216. As shown in FIG.
- the plurality of ribs 214 are arranged radially above and below the hub bearing mounting portion 216 .
- the rib 214a is arranged at a position in the vertical direction (90 degrees) from the horizontal position.
- the rib 214b is arranged in a direction that opens 20 degrees from the rib 214a, that is, at a position that is 110 degrees from the horizontal position.
- the rib 214c is arranged in a direction that opens 40 degrees from the rib 214a, that is, at a position that is 130 degrees from the horizontal position.
- the rib 214d is arranged in a direction closing 20 degrees from the rib 214a, that is, at a position 70 degrees from the horizontal position.
- the rib 214e is arranged in a direction closing 40 degrees from the rib 214a, that is, at a position 50 degrees from the horizontal position.
- the rib 214f is arranged at a position in the vertical direction (270 degrees).
- the rib 214g is arranged in a direction that opens 20 degrees from the rib 214g, that is, at a position that is 290 degrees from the horizontal position.
- the rib 214h is arranged in a direction that opens 40 degrees from the rib 214f, that is, at a position that is 310 degrees from the horizontal position.
- the rib 214i is arranged in a direction closing 20 degrees from the rib 214f, that is, at a position 250 degrees from the horizontal position.
- the rib 214j is arranged in a direction closing 40 degrees from the rib 214a, that is, at a position 230 degrees from the horizontal position.
- part of the brake device 25 is arranged to be accommodated within the housing recess 211 of the stator housing 21a.
- the brake device 25 is arranged in the housing concave portion 211 where the rib 214 is not formed.
- a portion of the brake caliper 252 is arranged at a position overlapping the stator 21 (stator housing 21a) in the radial direction. Also, the brake caliper 252 is arranged on the inner diameter side of the stator core 212 . An axial end face (part of the axial end portion) of the brake caliper 252 (brake device 25) is in contact with the housing flat plate portion 21a2 (stator 21). In other words, the axial end surface of the brake caliper 252 (brake device 25) and the housing flat plate portion 21a2 (stator 21) are in surface contact.
- the ribs 214 function as reinforcing members for the stator 21, and the strength between the ribs 214c and 214i and between the ribs 214e and 214h is reduced.
- the wheel 10 during running receives a load in the vertical direction due to the unevenness of the road surface.
- the in-wheel motor 20 provided in the wheel 10 receives a vertical load. Therefore, the ribs 214 arranged in the stator housing 21a may be arranged so as to receive the load in the vertical direction, and the ribs 214 are not arranged between the ribs 214c and 214i and between the ribs 214e and 214h. However, the strength of the stator 21 can be ensured.
- the weight of the in-wheel motor 20 can be reduced and the unsprung mass can be reduced. be able to.
- the reduction in the unsprung mass improves the ability of the suspension device 30 to follow the unevenness of the road surface, thereby improving the ride comfort of the vehicle.
- the ribs 214 are arranged within a range of 45 degrees from the vertical position in the opening direction and in the closing direction, that is, in the range of 45 to 135 degrees from the horizontal position at the top, and 225 degrees from the horizontal position at the bottom. It is better to prepare for the range from 315 degrees to 315 degrees.
- the brake caliper 252 is arranged so that its longitudinal direction faces the up-down direction (vertical direction). Both ends of the brake caliper 252 are fixed to the stator 21 (stator housing 21a) by fixing bolts 255a and 255b. That is, the upper portion of the brake caliper 252 is fixed to the stator housing 21a by a fixing bolt 255a, and the lower portion of the brake caliper 252 is fixed to the stator housing 21a by a fixing bolt 255b.
- the brake caliper 252 is arranged so that its longitudinal direction is oriented in the up-down direction (vertical direction). can be improved.
- the brake caliper 252 is fixed to the stator housing 21a from the wheel 10 (wheel 11) side, it is easy to access the brake caliper 252 and replace the brake pad 254 attached to the brake caliper 252. Etc. workability can be improved.
- the brake caliper 252 has pistons 253a and 253b which are moved in the axial direction by the hydraulic pressure of the brake fluid and arranged so as to face each other across the brake disc 251.
- the pistons 253a and 253b are pressed against the brake disc 251 to generate a frictional force.
- It has a brake pad 254 that generates a braking force by
- the brake pads 254 sandwich the brake disc 251 to generate a braking force.
- a brake disc 251 is installed between the hub bearing 26 and the wheel 11 .
- the brake disc 251 may be either a ventilated disc or a solid disc. Cast iron or the like is used as the material of the brake disc 251 .
- the braking force increases and the heat generation decreases, so it is preferable to increase the size (diameter) of the brake device.
- the diameter of the motor in order to improve the torque of the motor, it is preferable to increase the diameter of the motor.
- the brake device is downsized, and part of it is housed in the housing concave portion 211 of the stator housing 21a. As a result, the axial length of the in-wheel motor 20 can be shortened.
- FIG. 8 is a cross-sectional view taken along line VIII--VIII of FIG.
- the suspension device has an upper arm 31 located at the top, a lower arm located at the bottom, and a shock absorber 33 that damps vibrations.
- the stator housing cover 21b is provided with an upper arm mounting portion 217 for mounting the upper arm 31 and a lower arm mounting portion 218 for mounting the lower arm 32 thereon.
- the lower arm mounting portion 218 is arranged at a position closer to the rotating shaft 223 than the rotor housing 22a. Also, the position of the lower arm mounting portion 218 is closer to the wheel 10 (wheel 11) than the position of the upper arm mounting portion 217 is.
- the stator housing cover 21b of this embodiment is formed with a housing cover recess 215 recessed from the position of the housing cover flange 21b4 (the end on the opening side) toward the side opposite to the opening.
- a lower arm mounting portion 218 is provided. Therefore, the position of the lower arm mounting portion 218 can be brought closer to the wheel 11 .
- a kingpin shaft 219 connecting the upper arm mounting portion 217 and the lower arm mounting portion 218 is inclined downward toward the wheel 10 from the vehicle body side.
- the kingpin shaft 219 and the center line 101 of the wheel 10 (tire 12) should be substantially aligned on the ground contact surface of the tire 12. can be done. That is, in this embodiment, the scrub radius can be zero.
- the inverter device 24 is arranged between the upper arm mounting portion 217 and the lower arm mounting portion 218 .
- the inverter device 24 by disposing the inverter device 24 between the upper arm mounting portion 217 and the lower arm mounting portion 218, it can be mounted on the stator housing cover 21b without moving the kingpin shaft 219.
- FIG. 2 since the housing of the inverter device 24 can increase the rigidity of the stator housing cover 21b, the axial height of the ribs 21b3 formed in the housing cover concave portion 215 of the steering wheel 1b can be reduced. can be reduced in axial length.
- the housing recess 211 is formed in the stator housing 21a, and a part of the hub bearing 26 is aligned in the housing recess 211. Therefore, the wheel 11 is attached to the in-wheel motor 20. At this time, the in-wheel motor 20 is accommodated within the wheel 11. - ⁇ As a result, the length of the in-wheel motor 20 in the axial direction can be shortened. can match.
- the scrub radius can be set to zero, suppressing the reaction force during steering operation, and suppressing the steering from being steered by undulations and bumps in the road surface when traveling on a rough road surface.
- the recessed portion 211 of the housing is provided with a plurality of ribs 214 as reinforcing members, the strength of the stator 21 can be ensured.
- the brake device 25 since the brake device 25 is provided inside the housing concave portion 211, the length of the in-wheel motor 20 in the axial direction can be shortened.
- the brake caliper 252 of the brake device 25 is arranged so that the longitudinal direction of the brake caliper 252 faces the vertical direction (vertical direction) of the stator housing 21a, the brake caliper 252 itself can receive a vertical load. can improve the strength of
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- Combustion & Propulsion (AREA)
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Claims (10)
- 少なくとも一部がホイールの内部に配置され前記ホイールに動力を伝達するモータを備え、サスペンション装置によって車両に支持されるインホイールモータにおいて、
前記モータは、ステータ及び前記ステータの内部に配置され回転軸を備えたロータから構成され、
前記ステータは、一方が開放したステータハウジングと、前記ステータハウジングの開放部を閉塞するステータハウジングカバーを備え、
前記ステータハウジングは、軸方向に延びた筒状のハウジング環状部と、軸方向と直交する径方向に延びたハウジング平板部と、軸方向に延び一端が前記ハウジング平板部に接続された折返し部と、軸方向と直交する径方向に延び一端が前記折返し部の他端と接続され、他端がハウジング環状部と接続されたフランジ部から構成され、
前記ステータハウジングには、前記ハウジング平板部と前記折返し部によりハウジング凹部が形成され、
前記ハウジング凹部の径方向中央部には、前記ハウジング平板部に固定され、ハブ軸受を取り付けるハブ軸受取付部を備え、
前記ハブ軸受には、ハブボルトを介して前記ホイールが固定され、
前記ステータハウジングカバーには、前記サスペンション装置のアッパーアームを取り付けるアッパーアーム取付部と、ロアーアームを取り付けるロアーアーム取付部を備えたことを特徴とするインホイールモータ。 - 請求項1に記載のインホイールモータであって、
前記ハウジング凹部には、前記ハウジング環状部と、前記ハブ軸受取付部とを繋ぐ複数の補強部材を備えたことを特徴とするインホイールモータ。 - 請求項2に記載のインホイールモータであって、
前記補強部材は、水平位置から45度~135度の範囲、及び水平位置から225度から315度の範囲に備えたことを特徴とするインホイールモータ。 - 請求項1に記載のインホイールモータであって、
前記ハウジング凹部には、ブレーキ装置を配置したことを特徴とするインホイールモータ。 - 請求項1乃至4の何れか1項に記載のインホイールモータであって、
前記ロータは、軸方向に延びた筒状のロータハウジングと、軸方向と直交する径方向に延び前記回転軸を備えたロータ平板部とから構成され、
前記ロータ平板部は、前記ロータハウジングの軸方向中心位置から車体側に寄せて配置したことを特徴とするインホイールモータ。 - 請求項5に記載のインホイールモータであって、
前記ハブ軸受の少なくも一部は、径方向において前記ロータハウジングと重なる位置に配置したことを特徴とするインホイールモータ。 - 請求項5に記載のインホイールモータであって、
前記ロアーアーム取付部は、前記ロータハウジングよりも前記回転軸に近い位置に配置したことを特徴とするインホイールモータ。 - 請求項7に記載のインホイールモータであって、
前記ステータハウジングカバーには、前記ステータハウジングの反開放部側に向かって凹んだハウジングカバー凹部を備え、
前記ハウジングカバー凹部に前記ロアーアーム取付部を備えたことを特徴とするインホイールモータ。 - 請求項8に記載のインホイールモータであって、
前記ステータハウジングカバーには、前記モータに電力を供給するインバータ装置を備え、
前記インバータ装置は、前記アッパーアーム取付部と前記ロアーアーム取付部の間に配置したことを特徴とするインホイールモータ。 - 請求項1乃至9に何れか1項に記載のインホイールモータであって、
前記インホイールモータは、独立懸架式サスペンションによって車体に支持されたことを特徴とするインホイールモータ。
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CN102673380A (zh) * | 2012-01-18 | 2012-09-19 | 华南理工大学 | 一种内置悬置集成式轮毂电机驱动电动轮 |
US20140117744A1 (en) * | 2011-07-07 | 2014-05-01 | Schaeffler Technologies AG & Co. KG | Stator holding plate with inverter fastening function |
JP2015107778A (ja) * | 2013-12-06 | 2015-06-11 | トヨタ自動車株式会社 | 車輪駆動装置 |
WO2016170807A1 (ja) * | 2015-04-20 | 2016-10-27 | 株式会社Fomm | 自動車用サスペンション構造 |
CN107487175A (zh) * | 2017-07-25 | 2017-12-19 | 东风汽车公司 | 一种一体化集成式轮毂电机驱动单元 |
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JP2004115014A (ja) * | 2001-04-16 | 2004-04-15 | Bridgestone Corp | インホイールモータの取付方法及びインホイールモータシステム |
US20140117744A1 (en) * | 2011-07-07 | 2014-05-01 | Schaeffler Technologies AG & Co. KG | Stator holding plate with inverter fastening function |
CN102673380A (zh) * | 2012-01-18 | 2012-09-19 | 华南理工大学 | 一种内置悬置集成式轮毂电机驱动电动轮 |
JP2015107778A (ja) * | 2013-12-06 | 2015-06-11 | トヨタ自動車株式会社 | 車輪駆動装置 |
WO2016170807A1 (ja) * | 2015-04-20 | 2016-10-27 | 株式会社Fomm | 自動車用サスペンション構造 |
CN107487175A (zh) * | 2017-07-25 | 2017-12-19 | 东风汽车公司 | 一种一体化集成式轮毂电机驱动单元 |
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