US 11,866,022 B2
Electronic hydraulic brake device
Se Young Cheon, Yongin-si (KR); and Jae Woong Hur, Yongin-si (KR)
Assigned to Hyundai Mobis Co., Ltd., Seoul (KR)
Filed by HYUNDAI MOBIS Co., Ltd., Seoul (KR)
Filed on Jan. 9, 2020, as Appl. No. 16/739,079.
Claims priority of application No. 10-2019-0045335 (KR), filed on Apr. 18, 2019.
Prior Publication US 2020/0331444 A1, Oct. 22, 2020
Int. Cl. B60T 13/14 (2006.01); B60T 8/32 (2006.01); B60T 8/88 (2006.01); B60T 8/34 (2006.01); B60T 13/58 (2006.01)
CPC B60T 8/3275 (2013.01) [B60T 8/344 (2013.01); B60T 8/885 (2013.01); B60T 13/58 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electronic hydraulic brake device comprising:
a main braking part configured to drive a motor to provide hydraulic pressure to a plurality of wheel cylinders; and
an assist braking part connected to the main braking part, the assist braking part being configured to provide auxiliary hydraulic pressure to the plurality of wheel cylinders in response to an operation error of the main braking part,
wherein:
the main braking part comprises:
a master cylinder configured to generate hydraulic pressure through operation of the motor which is drivable in forward and backward directions according to a pressurization state of a pedal;
a first hydraulic part connected to the master cylinder, the first hydraulic part being configured to guide hydraulic pressure to a first some of the plurality of wheel cylinders;
a second hydraulic part connected to the master cylinder, the second hydraulic part being configured to guide hydraulic pressure to a second some of the plurality of wheel cylinders; and
a main motor pump connected to the first and second hydraulic parts, the main motor pump being configured to amplify hydraulic pressure; and
the assist braking part comprises:
an assist hydraulic part connected to the first and second hydraulic parts, the assist hydraulic part being configured to guide hydraulic pressure;
an assist accumulator connected to the assist hydraulic part and filled with the auxiliary hydraulic pressure; and
an assist bypass part configured to bypass the assist hydraulic part to guide hydraulic pressure to the assist accumulator.