US 11,655,868 B2
Drum brake apparatus
Chi Hoon Jo, Yongin-si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Jun. 23, 2021, as Appl. No. 17/356,098.
Claims priority of application No. 10-2020-0076096 (KR), filed on Jun. 23, 2020.
Prior Publication US 2021/0396289 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F16D 65/22 (2006.01); F16D 65/02 (2006.01)
CPC F16D 65/22 (2013.01) [F16D 65/02 (2013.01); F16D 2065/1304 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A drum brake apparatus comprising:
a housing;
a main braking unit disposed on a first portion of the housing, the main braking unit configured to be, during main braking, driven by a hydraulic pressure and pressing a shoe;
a parking braking unit disposed on a second portion of the housing, the parking braking unit configured to be, during parking braking, driven by an electromotive force of an actuator and pressing the shoe;
a first locking member configured to fasten the housing to a first surface of a back plate; and
a second locking member configured to fasten the actuator to the housing on a second surface side of the back plate,
wherein the housing includes: a housing body, a piston receiving body and a rod receiving body,
the housing body includes:
a body part having the piston receiving body and the rod receiving body therein,
a first fastening part disposed on the body part, and configured to be coupled to the back plate by the first locking member,
a through extension part disposed at an end of the body part, the through extension part disposed on the second surface side of the back plate and extending through a through hole of the back plate, and
a second fastening part to which the second locking member is locked.