In-wheel working device

Abstract

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 and facing the resolver fixing part, and a cover part fixed to the rotating part and covering the resolver rotor.

What is claimed is: 
     
         1 . An in-wheel working device comprising:
 a stator fixed to the inside of a housing;   a rotor rotatably installed in the stator;   a rotating part rotatably installed in the housing, the rotating part being configured to be rotated with the rotor;   a resolver fixing part fixed to the inside of the housing; and   a resolver moving part comprising:
 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. 
   
     
     
         2 . The in-wheel working device of  claim 1 , wherein the cover part is injection-molded in a shape to cover the resolver rotor. 
     
     
         3 . The in-wheel working device of  claim 2 , wherein the rotating part comprises:
 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.   
     
     
         4 . The in-wheel working device of  claim 3 , wherein the cover part is fixed to the mounting frame and has a larger inner diameter than an outer diameter of the resolver fixing part. 
     
     
         5 . The in-wheel working device of  claim 3 , further comprising:
 a gear shift part configured to shift gears using power received from the motor shaft; and   a drive shaft passing through the inside of the motor shaft, and configured to be rotated by power received from the gear shift part.   
     
     
         6 . The in-wheel working device of  claim 1 , wherein the cover part comprises:
 a first cover installed in a shape to cover a first side of the resolver rotor; and   a second cover installed in a shape to cover a second side of the resolver rotor opposite the first side.   
     
     
         7 . The in-wheel working device of  claim 6 , wherein the first cover comprises:
 a first base forming a plane in a circular arc shape at a position facing the first 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.   
     
     
         8 . The in-wheel working device of  claim 6 , wherein the second cover comprises:
 a second base forming a plane in a circular arc shape at a position facing the second 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.   
     
     
         9 . An in-wheel working device comprising:
 a stator fixed to the inside of a housing;   a rotor rotatably installed in the stator;   a rotating part rotatably installed in the housing, the rotating part being configured to be 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, wherein the resolver rotor is fixed to the rotating part, configured to be rotated with the rotating part, and implemented with a single member.   
     
     
         10 . The in-wheel working device of  claim 9 , wherein the resolver rotor comprises:
 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.   
     
     
         11 . The in-wheel working device of  claim 10 , wherein the rotating part comprises:
 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.   
     
     
         12 . The in-wheel working device of  claim 11 , wherein the rotor body is fixed to the mounting frame by a fastening member. 
     
     
         13 . The in-wheel working device of  claim 11 , wherein the rotor body has a plurality of mounting grooves formed along the outer circumference thereof, and the mounting grooves are directly mounted on the mounting frame.