US 11,867,245 B2
Electric parking brake device
Koji Usui, Tomi (JP)
Assigned to Hitachi Astemo Ltd., Ibaraki (JP)
Appl. No. 16/754,344
Filed by NISSIN KOGYO CO., LTD., Tomi (JP)
PCT Filed Oct. 18, 2018, PCT No. PCT/JP2018/038769
§ 371(c)(1), (2) Date Apr. 7, 2020,
PCT Pub. No. WO2019/078285, PCT Pub. Date Apr. 25, 2019.
Claims priority of application No. 2017-203219 (JP), filed on Oct. 20, 2017.
Prior Publication US 2020/0309215 A1, Oct. 1, 2020
Int. Cl. F16D 65/22 (2006.01); F16D 65/09 (2006.01); F16D 65/02 (2006.01); F16D 121/24 (2012.01); F16D 125/40 (2012.01); F16D 125/64 (2012.01)
CPC F16D 65/22 (2013.01) [F16D 65/09 (2013.01); F16D 2065/1348 (2013.01); F16D 2121/24 (2013.01); F16D 2125/40 (2013.01); F16D 2125/64 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electric parking brake device in which an actuator case of an electric actuator capable of obtaining a parking brake state by pulling a brake cable linked to a parking brake lever is mounted to a back plate of a drum brake having the parking brake lever, wherein:
a through-hole through which the brake cable passes is formed in the back plate,
a connecting tube portion that surrounds the through-hole protrudes integrally from the back plate,
the actuator case is mounted to a mounting tube at certain axial and circumferential positions with respect to the mounting tube, the mounting tube having, at one end in an axial direction, a joint portion formed separately from the back plate, the joint portion joined to the connecting tube portion such that a relative circumferential position of the mounting tube with respect to the connecting tube portion can be selected,
and wherein the mounting tube comprises, in a mentioned order from one end of the connecting tube portion,
a small-diameter tube portion having the joint portion at the one end of the mounting tube,
an annular step portion,
and a large-diameter tube portion that is formed coaxially and integrally with the small-diameter tube portion via the annular step portion disposed therebetween, the large-diameter tube portion having an open end,
wherein the actuator case is inserted into and engaged with the large-diameter portion from the open end,
a locking recess is formed in at least one position of the mounting tube, the locking recess is formed by cutting a part in the circumferential direction of the large-diameter tube portion, and
the locking recess is formed so as to pass through an inner surface and an outer surface of a peripheral wall of the large-diameter tube portion.