US 12,286,192 B2
Brake hydraulic pressure control system and vehicle
Mikiya Kotaka, Kanagawa (JP)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/802,375
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Feb. 11, 2021, PCT No. PCT/IB2021/051106
§ 371(c)(1), (2) Date Aug. 25, 2022,
PCT Pub. No. WO2021/171123, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2020-031446 (JP), filed on Feb. 27, 2020.
Prior Publication US 2023/0078749 A1, Mar. 16, 2023
Int. Cl. B60T 8/36 (2006.01); B60T 13/74 (2006.01); B62L 3/02 (2006.01); H02K 5/173 (2006.01); H02K 7/08 (2006.01); H02K 11/33 (2016.01); H02K 11/40 (2016.01); B60T 13/14 (2006.01); B60T 13/68 (2006.01)
CPC B62L 3/023 (2013.01) [B60T 8/368 (2013.01); B60T 13/745 (2013.01); H02K 5/1732 (2013.01); H02K 7/083 (2013.01); H02K 11/33 (2016.01); H02K 11/40 (2016.01); B60T 13/142 (2013.01); B60T 13/686 (2013.01); H02K 2211/03 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A brake hydraulic pressure control system (70) for a vehicle (100) comprising:
a substrate (80) in which a flow channel (26) for brake fluid is formed;
a motor (40) which is a driving source for a pump device (31) provided in the flow channel (26);
a control board (76) of the motor (40); and
a housing (85) which houses therein the control board (76) and is connected to the substrate (80), wherein
the motor (40) is a brushless motor, and is disposed in a space surrounded by the substrate (80) and the housing (85),
the motor (40) includes
a rotor (44),
a stator (41) which includes a coil (42) and a mold part (43) covering the coil (42) with a mold member, and
a motor housing (50) which houses therein the rotor (44) and the stator (41) and is in contact with the mold part (43), wherein the motor housing (50) includes a metal portion (50a) and the motor housing (50) is in contact with the substrate (80), wherein the motor (40) further includes
an output shaft (45) which is secured to the rotor (44), and
a bearing (46) which is configured to rotatably support the output shaft (45) and is held by the motor housing (50), wherein the bearing (46) is fitted into the substrate (80), and
wherein the brake hydraulic pressure control system has a configuration such that heat generated by the coil (42) is transmitted to an object, which is in contact with the motor housing (50), by way of the mold part (43), the motor housing (50), and the bearing (46).