US 12,292,093 B2
Brake apparatus for vehicle
Sang Pil Boo, Yongin-si (KR); Yeon Jun Lee, Yongin-si (KR); Choong Sik Shin, Yongin-si (KR); and Il Ho Park, Yongin-si (KR)
Assigned to Hyundai Mobis Co., Ltd., Seoul (KR)
Filed by HYUNDAI MOBIS Co., Ltd., Seoul (KR)
Filed on Jul. 18, 2022, as Appl. No. 17/867,035.
Claims priority of application No. 10-2022-0028903 (KR), filed on Mar. 7, 2022.
Prior Publication US 2023/0279914 A1, Sep. 7, 2023
Int. Cl. F16D 65/18 (2006.01); F16D 65/00 (2006.01); F16D 121/24 (2012.01); F16D 125/36 (2012.01); F16D 125/50 (2012.01)
CPC F16D 65/18 (2013.01) [F16D 65/0068 (2013.01); F16D 2121/24 (2013.01); F16D 2125/36 (2013.01); F16D 2125/50 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A brake apparatus for a vehicle, comprising:
a caliper body to be fixed to a vehicle body;
a driving unit fixed to the caliper body, and generates a rotational force;
a piston unit movably installed in the caliper body, and presses or releases a brake pad according to a moving direction of the piston unit;
a transfer gear unit connected to the driving unit, and rotated by the rotational force received from the driving unit;
a planetary gear unit fixed to the caliper body, and moves the piston unit forward and backward in connection with a rotation of the transfer gear unit, the planetary gear unit comprising:
a ring gear fixed to a portion of the caliper body, the ring gear comprising:
a fixed part fixed to the portion of the caliper body; and
a reducer disposed coaxially with the fixed part;
a sun gear rotatably supported by the ring gear, and engaged with and coupled to the transfer gear unit;
a plurality of planetary gears engaged with and coupled to the ring gear and the sun gear, and rotates and revolves in connection with a rotation of the sun gear, wherein an inner circumferential surface of the reducer is engaged with and coupled to the plurality of planetary gears; and
a carrier connected to the plurality of planetary gears, and transfers rotational forces of the plurality of planetary gears to the piston unit; and
a support part disposed between the fixed part and the reducer, and extended inward in a radial direction of the ring gear.