US20190028008A1 - In-wheel working device - Google Patents

In-wheel working device Download PDF

Info

Publication number
US20190028008A1
US20190028008A1 US16/035,705 US201816035705A US2019028008A1 US 20190028008 A1 US20190028008 A1 US 20190028008A1 US 201816035705 A US201816035705 A US 201816035705A US 2019028008 A1 US2019028008 A1 US 2019028008A1
Authority
US
United States
Prior art keywords
resolver
rotor
cover
working device
wheel working
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/035,705
Other languages
English (en)
Inventor
Hae Jun Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Mobis Co Ltd
Original Assignee
Hyundai Mobis Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170090813A external-priority patent/KR102368495B1/ko
Priority claimed from KR1020180069974A external-priority patent/KR102560917B1/ko
Application filed by Hyundai Mobis Co Ltd filed Critical Hyundai Mobis Co Ltd
Assigned to HYUNDAI MOBIS CO., LTD. reassignment HYUNDAI MOBIS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YANG, HAE JUN
Publication of US20190028008A1 publication Critical patent/US20190028008A1/en
Priority to US17/670,497 priority Critical patent/US20220239209A1/en
Priority to US17/670,496 priority patent/US20220239208A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • 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
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • 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
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle

Definitions

  • Exemplary embodiments relate to an in-wheel working device, and more particularly, to an in-wheel working device which can secure a space for installing a gear shift in a rotor by changing a structure for measuring rotation of a motor.
  • Electric vehicles may be divided into a pure electric vehicle that drives a motor using only electric energy stored in a rechargeable battery, a solar cell vehicle that drives a motor using a photoelectric cell, a fuel cell vehicle that drives a motor using a fuel cell based on hydrogen fuel, and a hybrid vehicle that uses an engine and motor together by driving the engine using fossil fuel and driving the motor using electricity.
  • an in-wheel working device is a technique used for a vehicle, such as an electric vehicle, which uses electricity as a power source. Unlike a system that rotationally drives wheels using power transferred through an engine, transmission, and drive shaft of a gasoline or diesel vehicle, the in-wheel working device directly transfers power to the wheels using motors arranged in left and right drive wheels or four left/right and front/rear drive wheels.
  • Exemplary embodiments of the invention are directed to an in-wheel working device which can secure a space for installing a gear shift in a rotor by changing a structure for measuring rotation of a motor, thereby improving mounting compatibility and power.
  • An exemplary embodiment of the invention provides an in-wheel working device including: a stator fixed to the inside of a housing; a rotor rotatably installed in the stator; a rotating part rotatably installed in the housing, and rotated with the rotor; a resolver fixing part fixed to the inside of the housing; and a resolver moving part.
  • the resolver moving part includes a resolver rotor positioned outside the resolver fixing part facing the resolver fixing part, and a cover part fixed to the rotating part and covering the resolver rotor.
  • the cover part may be injection-molded in a shape to cover the resolver rotor.
  • the rotating part may include a mounting frame installed in a shape to cover the rotor; and a motor shaft connected to the mounting frame, having a hollow portion formed therein, and rotatably installed in the housing.
  • the cover part may have a larger inner diameter than the outer diameter of the resolver fixing part, and fixed to the mounting frame.
  • the in-wheel working device may further include: a gear shift part configured to shift gears using power received from the motor shaft; and a drive shaft formed in a shaft shape passing through the inside of the motor shaft, and rotated by power received from the gear shift part.
  • the cover part may include a first cover installed in a shape to cover one side of the resolver rotor; and a second cover installed in a shape to cover the other side of the resolver rotor.
  • the first cover may include a first base forming a plane in a circular arc shape at a position facing the one side of the resolver rotor; a first inner member extended from the inner circumference of the first base toward the second cover; and a first outer member extended from the outer circumference of the first base toward the second cover.
  • the second cover may include a second base forming a plane in a circular arc shape at a position facing the other side of the resolver rotor; a second inner member extended from the inner circumference of the second base toward the first cover; and a second outer member extended from the outer circumference of the second base toward the first cover.
  • an in-wheel working device including: a stator fixed to the inside of a housing; a rotor rotatably installed in the stator; a rotating part rotatably installed in the housing, and rotated with the rotor; a resolver fixing part fixed to the inside of the housing; and a resolver rotor positioned outside the resolver fixing part facing the resolver fixing part.
  • the resolver rotor is fixed to the rotating part, rotated with the rotating part, and implemented with a single member.
  • the resolver rotor may include a rotor body forming a plane in a belt shape along a circular arc shape; and an inner groove forming a polygonal groove in the rotor body.
  • the rotating part may include a mounting frame installed in a shape to cover the rotor; and a motor shaft connected to the mounting frame, having a hollow portion formed therein, and rotatably installed in the housing.
  • the rotor body may be fixed to the mounting frame by a fastening member.
  • the rotor body may have a plurality of mounting grooves formed along the outer circumference thereof, and the mounting grooves directly mounted on the mounting frame.
  • FIG. 1 schematically illustrates the structure of an in-wheel working device in accordance with a first embodiment of the present invention.
  • FIG. 2 illustrates an installation state of a resolver moving part and a resolver fixing part in accordance with the first embodiment of the present invention.
  • FIG. 3 illustrates the resolver moving part and the resolver fixing part in accordance with the first embodiment of the present invention.
  • FIG. 4 schematically illustrates the structure of an in-wheel working device in accordance with a second embodiment of the present invention.
  • FIG. 5 is an exploded perspective view of a resolver moving part in accordance with the second embodiment of the present invention.
  • FIG. 6 is an assembled perspective view of the resolver moving part in accordance with the second embodiment of the present invention.
  • FIG. 7 is a perspective view illustrating that a resolver rotor in accordance with the present embodiment has fastening holes formed therein.
  • FIG. 8 is a perspective view illustrating that a resolver rotor in accordance with another embodiment of the present invention has mounting grooves.
  • X, Y, and Z can be construed as X only, Y only, Z only, or any combination of two or more items X, Y, and Z (e.g., XYZ, XYY, YZ, ZZ).
  • XYZ XYZ
  • ZZ ZZ
  • the term “comprise”, “configure”, “have”, or the like, which are described herein, will be understood to imply the inclusion of the stated components, and therefore should be construed as including other components, and not the exclusion of any other elements.
  • FIG. 1 schematically illustrates the structure of an in-wheel working device in accordance with a first embodiment of the present invention
  • FIG. 2 illustrates an installation state of a resolver moving part and a resolver fixing part in accordance with the first embodiment of the present invention
  • FIG. 3 illustrates the resolver moving part and the resolver fixing part in accordance with the first embodiment of the present invention.
  • the in-wheel working device 1 in accordance with the embodiment of the present invention may include a stator 20 fixed to the inside of a housing 10 , a rotor 30 rotatably installed in the stator 20 , a rotating part 40 rotatably installed in the housing 10 and rotated with the rotor 30 , a resolver moving part 50 fixed to the rotating part 40 and rotated with the rotating part 40 , and a resolver fixing part 90 fixed to the inside of the housing 10 facing the resolver moving part 50 .
  • the housing 10 forming the exterior of the in-wheel working device 1 may be fixed to a vehicle body, and the stator 20 , the rotor 30 , the rotating part 40 , the resolver moving part 50 , the resolver fixing part 90 , a gear shift part 100 , a drive shaft 110 and a hub part 120 may be installed in the housing 10 .
  • the stator 20 may be formed in a ring shape, and fixed to the inside of the housing 10 .
  • the stator 20 may have coil members 22 installed at the top and bottom thereof, respectively, and the rotations of the stator 20 and the coil member 22 may be constrained.
  • the rotor 30 may be rotatably installed in the stator 20 , and rotated according to flux changes of the stator 20 and the coil member 22 .
  • the rotor 30 may be formed in a ring shape, and have a magnetic force. Since the detailed configurations and operations of the stator 20 and the rotor 30 are publicly known, the detailed descriptions thereof are omitted herein.
  • the rotating part 40 may be formed in various shapes, as long as the rotating part 40 can be rotatably installed in the housing 10 and rotated with the rotor 30 .
  • the rotating part 40 in accordance with the present embodiment may include a mounting frame 42 and a motor shaft 44 .
  • the mounting frame 42 may be formed in a plate shape which is brought in contact with one side surface and the top and bottom surfaces of the rotor 30 with a rectangular cross-section, and connected to the rotor 30 so as to rotate with the rotor 30 .
  • the mounting frame 42 may have a protrusion formed at the top thereof, and the resolver moving part 50 may be fixed to the protrusion. Therefore, the rotating part 40 , the rotor 30 and the resolver moving part 50 may be rotated together.
  • the motor shaft 44 may be connected to the mounting frame 42 and rotated with the mounting frame 42 . Furthermore, the motor shaft 44 may be rotatably installed in the housing 10 , and have a hollow portion formed therein. The motor shaft 44 may be extended in the top-to-bottom direction, the gear shift part 100 may be installed at one side of the motor shaft 44 , and the hub part 120 may be installed at the other side of the motor shaft 44 .
  • the resolver moving part 50 may be fixed to the rotating part 40 , and rotated with the rotating part 40 .
  • the resolver moving part 50 in accordance with the present embodiment may include a cover part 52 and a resolver rotor 51 .
  • the cover part 52 may be formed through injection molding, fixed to the mounting frame 42 , and have a larger inner diameter than the outer diameter of the resolver fixing part 90 .
  • the resolver rotor 51 may be fixed to the cover part 52 , and positioned outside the resolver fixing part 90 . Since the cover part 52 formed of synthetic resin is injection-molded in a shape to cover the resolver rotor 51 , the resolver rotor 51 and the cover part 52 may be coupled as one body. Furthermore, since the cover part 52 is fixed to the outside of the mounting frame 42 , the resolver moving part 50 may be rotated with the rotating part 40 .
  • the resolver fixing part 90 may be fixed to the inside of the housing 10 facing the resolver moving part 50 .
  • Each of the resolver rotor 51 and the resolver fixing part 90 may have a two-phase winding, and detect the angular velocity and angular position of the rotating part 40 through a change of an output voltage value.
  • the coil of the resolver fixing part 90 may be wound in such a manner that flux distribution becomes a sine wave with respect to an angle.
  • the coil of the resolver fixing part 90 may be wound in such a manner that the voltage is changed to the sine and cosine of the rotation angle of the rotor 30 .
  • the amplitude ratio of the sine output to the cosine output may be determined in order to recognize the rotation angle and position of the rotor 30 .
  • various resolver measurement techniques can be applied in order to measure the angular position and angle of the rotor 30 .
  • the resolver fixing part 90 may be formed in a ring shape and fixed to the inside of the housing 10 , the inside of the resolver rotor 51 positioned outside the resolver fixing part 90 may form a polygonal groove, and the outside of the resolver rotor 51 may form a circular curved surface.
  • the cover part 52 may have a larger outer diameter than the outer diameter of the resolver rotor 51 , and injection-molded with the resolver rotor 51 .
  • the cover part 52 may be mounted outside the resolver rotor 51 . Since the resolver moving part 50 is installed at the top of the rotor 30 or adjacent to the coil member 22 , noise is highly likely to be generated by an electromagnetic force generated by the rotor 30 and the stator 20 . Thus, the cover part 52 may be installed to cover the resolver rotor 51 , such that a space for isolating the resolver rotor 51 from the rotor 30 can be secured while the electromagnetic force of the stator 20 and the rotor 30 is reduced. Therefore, noise can be reduced.
  • the in-wheel working device 1 in accordance with the embodiment of the present invention may further include the gear shift part 100 , the drive shaft 110 and the hub part 120 .
  • the gear shift part 100 may include various types of gear shift devices, as long as the gear shift part 100 can shift gears using power received from the motor shaft 44 .
  • the gear shift part 100 in accordance with the embodiment of the present invention may include a sun gear 102 , a planetary gear 104 , a carrier 106 and a ring gear 108 .
  • the sun gear 102 may be connected to the top of the motor shaft 44 , and have gear teeth formed outside a pipe-shaped body thereof. Therefore, the sun gear 102 may be rotated with the motor shaft 44 .
  • the planetary gear 104 may be installed outside the sun gear 102 , and the carrier 106 may rotatably support the planetary gear 104 .
  • the ring gear 108 positioned outside the carrier 106 may maintain a fixed state.
  • the drive shaft 110 may be formed in a shaft shape which passes through the inside of the motor shaft 44 , and rotated by power received from the gear shift part 100 .
  • the top of the drive shaft 110 extended in the top-to-bottom direction may be connected to the carrier 106 , and the bottom of the drive shaft 110 may be connected to a hub inner race 122 of the hub part 120 so as to receive rotation power.
  • the hub part 120 may include the hub inner race 122 , a hub outer race 124 and a hub bearing 126 .
  • the hub inner race 122 may be spline-coupled to the drive shaft 110 , and rotated with the drive shaft 110 , the hub outer race 124 may be positioned outside the hub inner race 122 , and the hub bearing 126 may be positioned between the hub inner race 122 and the hub outer race 124 .
  • the wheel of the vehicle may be rotated by the rotation of the hub inner race 122 .
  • the mounting frame 42 and the motor shaft 44 which constitute the rotating part 40 may be rotated by the rotation of the rotor 30 .
  • the cover part 52 and the resolver rotor 51 of the resolver moving part 50 fixed to the mounting frame 42 may also be rotated. Therefore, the resolver fixing part 90 may measure the angular velocity and angular position of the resolver moving part 50 , in order to recognize the angular velocity and angular position of the rotor 30 . Since the resolver moving part 50 and the resolver fixing part 90 which constitute the resolver are positioned at the top of the rotor 30 , the gear shift part 100 can be installed at the top of the motor shaft 44 while an increase of the size is minimized.
  • the sun gear 102 may be rotated by the rotation of the motor shaft 44 , and the carrier 106 supporting the planetary gear 104 may be rotated while the velocity thereof is reduced.
  • the drive shaft 110 connected to the carrier 106 may transfer power to the spline-coupled hub inner race 122 , and the wheel of the vehicle may be rotated by the rotation of the hub inner race 122 .
  • the resolver moving part 50 and the resolver fixing part 90 for measuring the rotation of the rotor 30 are installed in the stator 20 , the installation space of the gear shift part 100 for changing the output of the rotating part 40 can be secured, which makes it possible to improve the power of the vehicle.
  • FIG. 4 schematically illustrates the structure of an in-wheel working device in accordance with a second embodiment of the present invention
  • FIG. 5 is an exploded perspective view of a resolver moving part in accordance with the second embodiment of the present invention
  • FIG. 6 is an assembled perspective view of the resolver moving part in accordance with the second embodiment of the present invention.
  • the in-wheel working device 1 in accordance with the second embodiment of the present invention may include a stator 20 fixed to the inside of a housing 10 , a rotor 30 rotatably installed in the stator 20 , a rotating part 40 rotatably installed in the housing 10 and rotated with the rotor 30 , a resolver moving part 50 fixed to the rotating part 40 , rotated with the rotating part 40 , and implemented by a plurality of members, and a resolver fixing part 90 fixed to the inside of the housing 10 facing the resolver moving part 50 .
  • the housing 10 forming the exterior of the in-wheel working device 1 may be fixed to the vehicle body, and the stator 20 , the rotor 30 , the rotating part 40 , the resolver moving part 50 , the resolver fixing part 90 , a gear shift part 100 , a drive shaft 110 and a hub part 120 may be installed in the housing 10 .
  • the stator 20 may be formed in a ring shape, and fixed in the housing 10 .
  • the stator 20 may have coil members 22 installed at the top and bottom thereof, and the stator 20 and the coil members 22 may be constrained from rotating.
  • the rotor 30 may be rotatably installed in the stator 20 , and rotated according to flux changes of the stator 20 and the coil member 22 .
  • the rotor 30 may be formed in a ring shape, and have a magnetic force. Since the detailed configurations and operations of the stator 20 and the rotor 30 are publicly known, the detailed descriptions thereof are omitted herein.
  • the rotating part 40 may be formed in various shapes, as long as the rotating part 40 can be rotatably installed in the housing 10 and rotated with the rotor 30 .
  • the rotating part 40 in accordance with the second embodiment may include a mounting frame 42 and a motor shaft 44 .
  • the mounting frame 42 may be formed in a plate shape which is brought in contact with one side surface and the top and bottom surfaces of the rotor 30 , and the rotor 30 may be connected to the mounting frame 42 and rotated with the mounting frame 42 .
  • the mounting frame 42 may have a protrusion formed at the top thereof, and the resolver moving part 50 may be fixed to the protrusion. Therefore, the rotating part 40 , the rotor 30 and the resolver moving part 50 may be rotated together.
  • the motor shaft 44 may be connected to the mounting frame 42 and rotated with the mounting frame 42 . Furthermore, the motor shaft 44 may be rotatably installed in the housing 10 , and have a hollow portion formed therein. The motor shaft 44 may be extended in the top-to-bottom direction, the gear shift part 100 may be installed at one side of the motor shaft 44 , and the hub part 120 may be installed at the other side of the motor shaft 44 .
  • the resolver moving part 50 may be fixed to the rotating part 40 , and rotated with the rotating part 40 .
  • the resolver moving part 50 in accordance with the second embodiment may include a resolver rotor 51 and a cover part 52 .
  • the cover part 52 may include a first cover 53 and a second cover 56 .
  • the resolver rotor 51 may be formed in a ring shape and positioned outside the resolver fixing part 90 , the inside of the resolver rotor 51 may form a polygonal groove, and the outside of the resolver rotor 51 may form a circular curved surface.
  • the first cover 53 may be installed in a shape to cover one side of the resolver rotor 51
  • the second cover 56 may be installed in a shape to cover the other side of the resolver rotor 51 .
  • the first and second covers 53 and 56 may be injection-molded separately from the resolver rotor 51 , and then coupled to the resolver rotor 51 so as to form an assembly.
  • the resolver rotor 51 may be used in common, and the first and second covers 53 and 56 may be manufactured in a package shape and coupled to the resolver rotor 51 , which makes it possible to remove a problem that the manufacturing cost is increased by a model change.
  • the first and second covers 53 and 56 may be formed through injection molding, fixed to the mounting frame 42 , and have a larger inner diameter than the outer diameter of the resolver fixing part 90 .
  • the resolver rotor 51 may be positioned between the first and second covers 53 and 56 .
  • the first and second covers 53 and 56 may be formed of synthetic resin, injection-molded separately from the resolver rotor 51 , and installed in a shape to cover the resolver rotor 51 . Furthermore, since the first and second covers 53 and 56 are fixed to the outside of the mounting frame 42 , the resolver moving part 50 may be rotated with the rotating part 40 .
  • the first cover 53 in accordance with the second embodiment may include a first base 54 , a plurality of first inner members 55 A and a first outer member 55 B.
  • the first base 54 may form a plane in a circular arc shape at a position facing the one side of the resolver rotor 51 .
  • the first inner members 55 A may be extended from the inner circumference of the first base 54 toward the second cover 56 .
  • the first inner members 55 A may be installed along the inner circumference of the first base 54 so as to be spaced at preset intervals.
  • the first outer member 55 B may be extended from the outer circumference of the first base 54 toward the second cover 56 . Between the first inner members 55 A and the first outer member 55 B, a groove for seating the resolver rotor 51 may be formed. The first outer member 55 B may be extended in a ring shape while having a level difference from the first base 54 .
  • the second cover 56 in accordance with the second embodiment may include a second base 57 , a plurality of second inner members 58 A and a second outer member 58 B.
  • the second base 57 may form a plane in a circular arc shape at a position facing the other side of the resolver rotor 51 .
  • the second inner members 58 A may be extended from the inner circumference of the second base 57 toward the first cover 53 .
  • the second inner members 58 A may be installed along the inner circumference of the second base 57 so as to be spaced at preset intervals.
  • the second outer member 58 B may be extended from the outer circumference of the second base 57 toward the first cover 53 . Between the second inner members 58 A and the second outer member 58 B, a groove for seating the resolver rotor 51 may be formed. The second outer member 58 B may be extended in a ring shape while having a level difference from the second base 57 .
  • the first inner member 54 may be brought in contact with the second inner member 58 A and constrained from moving, and the first outer member 55 B may also be brought in contact with the second outer member 58 B and constrained from moving.
  • the first and second covers 53 and 56 may be fixed through a bolt or adhesive. Alternatively, the first and second covers 53 and 56 may be fixed to each other through various coupling methods such as laser welding and thermal welding.
  • the first and second covers 53 and 56 may be mounted on the outside of the resolver rotor 51 . Since the resolver moving part 50 is installed at the top of the rotor 30 or adjacent to the coil member 22 , noise is likely to be caused by an electromagnetic force generated by the rotor 30 and the stator 20 . Therefore, the first and second covers 53 and 56 may be installed to cover the resolver rotor 51 , such that a space for isolating the resolver rotor 51 from the rotor 30 can be secured while reducing the electromagnetic force of the stator 20 and the rotor 30 , transferred to the resolver rotor 51 . Thus, noise can be reduced.
  • the resolver fixing part 90 may be fixed to the inside of the housing 10 facing the resolver moving part 50 .
  • Each of the resolver rotor 51 and the resolver fixing part 90 may have a two-phase winding, and detect an angular velocity and angular position of the rotating part 40 through a change of an output voltage.
  • the coil of the resolver fixing part 90 may be wound in such a manner that flux distribution becomes a sine wave with respect to an angle.
  • the coil of the resolver fixing part 90 may be wound in such a manner that the voltage is changed to the sine and cosine of the rotation angle of the rotor 30 .
  • the amplitude ratio of the sine output to the cosine output may be determined in order to recognize the rotation angle and position of the rotor 30 .
  • various resolver measurement techniques can be applied in order to measure the rotation position and angle of the rotor 30 . Since the resolver fixing part 90 in accordance with the second embodiment is formed in a ring shape and fixed to the inside of the housing 10 , the rotation of the resolver fixing part 90 may be constrained.
  • the in-wheel working device 1 in accordance with the second embodiment of the present invention may further include the gear shift part 100 , the drive shaft 110 and the hub part 120 .
  • the gear shift part 100 may include various types of gear shift devices, as long as the gear shift part 100 can shift gears using power received from the motor shaft 44 .
  • the gear shift part 100 in accordance with the second embodiment may include a sun gear 102 , a planetary gear 104 , a carrier 106 and a ring gear 108 .
  • the sun gear 102 may be connected to the top of the motor shaft 44 , and have gear teeth formed on the outside of the pipe-shaped body thereof. Therefore, the sun gear 102 may be rotated with the motor shaft 44 .
  • the planetary gear 104 may be installed outside the sun gear 102 , and the carrier 106 may rotatably support the planetary gear 104 .
  • the ring gear 108 positioned outside the carrier 106 may maintain a fixed state.
  • the drive shaft 110 may be formed in a shaft shape which passes through the inside of the motor shaft 44 , and rotated by power received from the gear shift part 100 .
  • the top of the drive shaft 110 extended in the top-to-bottom direction may be connected to the carrier 106 , and the bottom of the drive shaft 110 may be connected to a hub inner race 122 of the hub part 120 so as to receive rotation power.
  • the hub part 120 may include the hub inner race 122 , a hub outer race 124 and a hub bearing 126 .
  • the hub inner race 122 may be spline-coupled to the drive shaft 110 and rotated with the drive shaft 110
  • the hub outer race 124 may be positioned outside the hub inner race 122
  • the hub bearing 126 may be positioned between the hub inner race 122 and the hub outer race 124 .
  • the wheels of the vehicle may be rotated by the rotation of the hub inner race 122 .
  • the mounting frame 42 and the motor shaft 44 which constitute the rotating part 40 may be rotated by the rotation of the rotor 30 .
  • the first and second covers 53 and 56 and the resolver rotor 2 of the resolver moving part 50 fixed to the mounting frame 42 may also be rotated. Therefore, the resolver fixing part 90 may measure the angular velocity and angular position of the resolver moving part 50 , in order to recognize the angular velocity and angular position of the rotor 30 . Since the resolver moving part 50 and the resolver fixing part 90 which constitute the resolver are positioned at the top of the rotor 30 , the gear shift part 100 may be installed at the top of the motor shaft 44 while an increase of the size is minimized.
  • the sun gear 102 may be rotated by the rotation of the motor shaft 44 , and the carrier 106 supporting the planetary gear 104 may be rotated while the velocity thereof is reduced.
  • the drive shaft 110 connected to the carrier 106 may transfer power to the spline-coupled hub inner race 122 , and the wheels of the vehicle may be rotated by the rotation of the hub inner race 122 .
  • the resolver rotor 51 can be used in common, and only the first and second covers 53 and 56 may be separately manufactured, which makes it possible to save the manufacturing cost and distribution cost. Furthermore, only the first and second covers 53 and 56 may be separately manufactured and applied to a package, and various assembly structures can be applied depending to the shapes of the first and second covers 53 and 56 .
  • FIG. 7 is a perspective view illustrating that a resolver rotor in accordance with the present embodiment has fastening holes formed therein.
  • the in-wheel working device 1 in accordance with the present embodiment may include a stator 20 fixed to the inside of a housing 10 , a rotor 30 rotatably installed in the stator 20 , a rotating part 40 rotatably installed in the housing 10 and rotated with the rotor 30 , a resolver rotor 51 fixed to the rotating part 40 , rotated with the rotating part 40 , and implemented with a single member, and a resolver fixing part 90 fixed to the inside of the housing 10 facing the resolver rotor 51 .
  • the resolver rotor 51 in accordance with the present embodiment is positioned outside the resolver fixing part 90 and fixed to the rotating part 40 .
  • the resolver rotor 51 in accordance with the present embodiment may include a rotor body 511 , an inner groove 512 and a plurality of fastening holes 513 .
  • the rotor body 511 may form a plane in a belt shape along a circular arc shape.
  • the outside of the rotor body 511 may form a circular curved surface.
  • the inner groove 512 may form a polygonal groove in the rotor body 511 .
  • the plurality of fastening holes 513 may be used to install a fastening member 514 in the rotor body 511 .
  • the fastening member 514 may be a bolt.
  • the plurality of fastening holes 513 may be formed along the rotor body 511 , and the fastening member 514 may be fixed to the mounting frame 42 through the fastening holes 513 formed in the rotor body 511 . Therefore, the resolver rotor 51 may be directly mounted on the rotating part 40 without a separate cover part, and rotated with the rotating part 40 .
  • the resolver rotor 51 and the resolver fixing part 90 When the resolver rotor 51 and the resolver fixing part 90 are spaced at a sufficient distance from the stator 20 to generate electromagnetic waves, the resolver rotor 51 may be directly mounted on the rotating part 40 without a separate cover part. When the resolver rotor 51 and the resolver fixing part 90 are installed close to the drive shaft 110 serving as a motor rotating shaft, the influence of electromagnetic noise may be limited. Therefore, the resolver rotor 51 may be directly fastened to the rotating part 40 or the drive shaft 110 .
  • FIG. 8 is a perspective view illustrating that a resolver rotor in accordance with another embodiment of the present invention has mounting grooves.
  • the resolver rotor 51 in accordance with the present embodiment may include a rotor body 516 , an inner groove 517 and a plurality of mounting grooves 518 .
  • the rotor body 516 may form a plane in a belt shape along a circular arc shape.
  • the outside of the rotor body 516 may form a circular curved surface.
  • the inner groove 517 may form a polygonal groove in the rotor body 516 .
  • the plurality of mounting grooves 518 may be formed along the outer circumference of the rotor body 516 .
  • the plurality of mounting grooves 518 may be installed at preset intervals on the outer circumference of the rotor body 516 . Therefore, separate protrusions 421 formed on the mounting frame 42 of the rotating part 40 may be inserted into the mounting grooves 518 .
  • the resolver rotor 51 may be directly mounted on the rotating part 40 without a separate cover part, and rotated with the rotating part 40 .
  • the first and second covers 53 and 56 may be injection-molded as separate products and coupled to the resolver rotor 51 .
  • the resolver rotor 51 can be used in common, the manufacturing cost can be reduced.
  • the resolver rotor 51 is directly fixed to the rotating part 40 without a separate cover part, the space can be utilized more efficiently.
  • the installation space of the gear shift part 100 for changing the output of the rotating part 40 can be secured, which makes it possible to improve the power of the vehicle.
US16/035,705 2017-07-18 2018-07-16 In-wheel working device Abandoned US20190028008A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/670,497 US20220239209A1 (en) 2017-07-18 2022-02-13 In-wheel working device
US17/670,496 US20220239208A1 (en) 2017-07-18 2022-02-13 In-wheel working device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2017-0090813 2017-07-18
KR1020170090813A KR102368495B1 (ko) 2017-07-18 2017-07-18 인휠 구동장치
KR1020180069974A KR102560917B1 (ko) 2018-06-19 2018-06-19 인휠 구동장치
KR10-2018-0069974 2018-06-19

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US17/670,496 Division US20220239208A1 (en) 2017-07-18 2022-02-13 In-wheel working device
US17/670,497 Division US20220239209A1 (en) 2017-07-18 2022-02-13 In-wheel working device

Publications (1)

Publication Number Publication Date
US20190028008A1 true US20190028008A1 (en) 2019-01-24

Family

ID=63171300

Family Applications (3)

Application Number Title Priority Date Filing Date
US16/035,705 Abandoned US20190028008A1 (en) 2017-07-18 2018-07-16 In-wheel working device
US17/670,497 Pending US20220239209A1 (en) 2017-07-18 2022-02-13 In-wheel working device
US17/670,496 Pending US20220239208A1 (en) 2017-07-18 2022-02-13 In-wheel working device

Family Applications After (2)

Application Number Title Priority Date Filing Date
US17/670,497 Pending US20220239209A1 (en) 2017-07-18 2022-02-13 In-wheel working device
US17/670,496 Pending US20220239208A1 (en) 2017-07-18 2022-02-13 In-wheel working device

Country Status (3)

Country Link
US (3) US20190028008A1 (zh)
CN (1) CN208782666U (zh)
DE (1) DE202018003305U1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220239209A1 (en) * 2017-07-18 2022-07-28 Hyundai Mobis Co., Ltd. In-wheel working device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022121431A1 (de) 2022-08-24 2024-02-29 Keßler & Co.GmbH & Co.KG Radseite

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020191493A1 (en) * 2000-07-11 2002-12-19 Tatsuo Hara Spring, drive mechanism, device and timepiece using the spring
US20030213322A1 (en) * 2002-05-15 2003-11-20 Nsk Ltd. Ball screw apparatus
US20110187215A1 (en) * 2010-02-02 2011-08-04 Asmo Co., Ltd. Dynamo-electric machine
US20120032544A1 (en) * 2010-08-06 2012-02-09 Aisin Aw Co., Ltd. Vehicle drive device
US20130221810A1 (en) * 2012-02-29 2013-08-29 GM Global Technology Operations LLC Transmission assembly with integrated motor position sensor
US20140070649A1 (en) * 2012-09-07 2014-03-13 Remy Technologies, Llc Resolver with mounting structure and method
US20190032728A1 (en) * 2016-03-18 2019-01-31 Ntn Corporation Clutch unit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10163321C1 (de) * 2001-12-21 2003-08-14 Minebea Co Ltd Spalttopfmotor
US8232693B2 (en) * 2010-01-11 2012-07-31 GM Global Technology Operations LLC Resolver with locating feature
US20190028008A1 (en) * 2017-07-18 2019-01-24 Hyundai Mobis Co., Ltd In-wheel working device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020191493A1 (en) * 2000-07-11 2002-12-19 Tatsuo Hara Spring, drive mechanism, device and timepiece using the spring
US20030213322A1 (en) * 2002-05-15 2003-11-20 Nsk Ltd. Ball screw apparatus
US20110187215A1 (en) * 2010-02-02 2011-08-04 Asmo Co., Ltd. Dynamo-electric machine
US20120032544A1 (en) * 2010-08-06 2012-02-09 Aisin Aw Co., Ltd. Vehicle drive device
US20130221810A1 (en) * 2012-02-29 2013-08-29 GM Global Technology Operations LLC Transmission assembly with integrated motor position sensor
US20140070649A1 (en) * 2012-09-07 2014-03-13 Remy Technologies, Llc Resolver with mounting structure and method
US20190032728A1 (en) * 2016-03-18 2019-01-31 Ntn Corporation Clutch unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220239209A1 (en) * 2017-07-18 2022-07-28 Hyundai Mobis Co., Ltd. In-wheel working device

Also Published As

Publication number Publication date
US20220239209A1 (en) 2022-07-28
DE202018003305U1 (de) 2018-07-30
US20220239208A1 (en) 2022-07-28
CN208782666U (zh) 2019-04-23

Similar Documents

Publication Publication Date Title
US20220239208A1 (en) In-wheel working device
US9331546B2 (en) In-wheel motor and in-wheel driving device
US9543792B2 (en) Rotary electric machine, electric motor, machine, electric generator, and electric generating machine
KR102029993B1 (ko) 인휠 구동기 및 이를 포함하는 인휠 어셈블리
US9583983B2 (en) Electric motor assembly and method
US20110290581A1 (en) Steering drive for a motor vehicle
WO2008007806A1 (fr) Module de moteur
US20180118022A1 (en) In-wheel working device
KR20200143831A (ko) 인휠 구동장치
JP2013021810A (ja) 回転電機
JP2007306751A (ja) ステータの固定構造および車両
EP3722131A1 (en) In-wheel motor driving apparatus
CN107959395B (zh) 多圈盘型动力马达
KR102560917B1 (ko) 인휠 구동장치
US10680472B1 (en) Stator having skewed mounting ears
US8689916B2 (en) Apparatus of driving wheels for in-wheel system
US11571960B2 (en) Vehicle drive device with reduction device
KR20100085647A (ko) 전기 자동차용 인휠모터 구조
US20170126078A1 (en) Switched reluctance motor
CN108155763B (zh) 电动机的旋转变压器安装结构
US20180152075A1 (en) Assembly structure of driving motor and inverter
KR102224049B1 (ko) 차량용 인휠 모터
KR102368495B1 (ko) 인휠 구동장치
CN215153939U (zh) 具备可变变速装置的车辆用驱动装置
KR102569493B1 (ko) 모터 레졸버 장착구조

Legal Events

Date Code Title Description
AS Assignment

Owner name: HYUNDAI MOBIS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YANG, HAE JUN;REEL/FRAME:046354/0460

Effective date: 20180710

STPP Information on status: patent application and granting procedure in general

Free format text: APPLICATION DISPATCHED FROM PREEXAM, NOT YET DOCKETED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION