Brake apparatus for electric corner module
View Patent ↗Provided is a brake apparatus for an electric corner module (ECM) including: a housing; a shaft, of which both ends are accommodated in accommodation portions of the housing; a planet gear connected to the shafts; and a driving unit that transmits power to the shaft, moves the planet gear in an axial direction and induces friction between the housing and the planet gear. That is, in a brake apparatus for an ECM, a planet gear is moved in an axial direction using a driving unit so as to induce friction between a housing and the planet gear and thus confinement forces of the planet gear are generated so that a brake function can be implemented by blocking power transmission using a decelerator and the weight of a wheel can be reduced and the size of a power transmission system can be reduced and optimization of packaging can be implemented.
1. A brake apparatus for an electric corner module (ECM), the brake apparatus comprising:
a housing 100 having accommodation portions 110 ;
a shaft 200 , of which both ends are accommodated in the accommodation portions 110 of the housing 100 ;
a planet gear 300 connected to the shaft 200 ; and
a driving unit 400 that transmits power to the shaft 200 , moves the planet gear 300 in an axial direction and induces friction between the housing 100 and the planet gear 300 .
2. The brake apparatus of claim 1 , further comprising an elastic member 500 that is embedded in the accommodation portions 110 of the housing 100 and supports one end or both ends of the shaft 200 .
3. The brake apparatus of claim 1 , wherein the driving unit 400 comprises:
a flow path 410 formed to communicate with the accommodation portions 110 of the housing 100 ; and
a driving pump 420 that supplies a working fluid through the flow path 410 and pressurizes the shaft 200 in the axial direction so as to induce an axial motion of the planet gear 300 .
4. The brake apparatus of claim 1 , wherein the driving unit 400 comprises:
a driving motor 430 ; and
a motion conversion portion 440 that is connected to one end of the shaft 200 and converts a rotation motion of the driving motor 430 into a linear motion so as to induce an axial motion of the shaft 200 .
5. The brake apparatus of claim 1 , further comprising a sealing member 600 that is mounted on the shaft 200 and contacts wall surfaces of the accommodation portions 110 of the housing 100 .
6. The brake apparatus of claim 1 , further comprising a frictional pad 700 disposed on a contact surface of the housing 100 and the planet gear 300 .