Hosei Brake Ind. Co., Ltd.

Advics Co., Ltd.

Hosei Brake Industry Co., Ltd.

Mitsuyasu Mizuno

Kazuhiro Suzuki

Jin Yamada

Keiichi Tsurumi

Kazuhiro Asai

Eiji Inaya

Naomi Mitsuoka

Hideyuki Kai

Hisashi Kobayashi

Minoru Tabata

In the interior of a brake drum, the arrangement space in the rotational axis direction of the brake drum is spacious in comparison with that in the direction orthogonal to the rotational axis direction in which an anchor portion, hub components on the vehicle body side and the like are arranged. An electric parking brake device is provided with the anchor portion that supports respective one ends of brake shoes. A parking lever is pivotally moved by a drive unit operated by an electric motor for pushing the brake shoes toward the brake drum. The anchor portion and the drive unit are arranged to be piled up in the rotational axis direction of the brake drum which is spacious in comparison with the direction orthogonal to the rotational axis direction.

Electric parking brake device

A parking brake device for a vehicle, including: (a) a backing plate which is fixed to a body of the vehicle such that the backing plate is held substantially perpendicular to an axis of a wheel of the vehicle; (b) first and second arcuate brake shoes which are disposed on one of opposite sides of the backing plate such that the first and second arcuate brake shoes are movable toward and away from each other; (c) a moving mechanism which is positioned between the first and second arcuate brake shoes and which includes a pivotable brake lever, the moving mechanism moving the first and second arcuate brake shoes away from each other when the brake lever is pivoted in a predetermined direction; and (d) an operable member which is connected to the brake lever and which is operable by an operator of the vehicle to pivot the brake lever in the predetermined direction, wherein the brake lever has a connected portion at which the brake lever is connected to the operable member, and wherein the brake lever extends through an aperture which is formed through the backing plate such that the connected portion is positioned on the other of the opposite sides of the backing plate.

Parking brake device including pivotable brake lever which extends through aperture of backing plate

A dual-mode drum brake assembly including: (a) a backing plate which is fixed to a vehicle body; (b) first and second arcuate brake shoes disposed on the backing plate; (c) an actuator for moving the two brake shoes away from each other to force the two brake shoes against a brake drum so that the brake assembly acts as a leading/trailing drum brake; (d) an intermediate lever pivotably connected to a web of the first arcuate brake shoe; (e) a second strut associated with the intermediate lever and the second arcuate brake shoe; (f) a positioning spring for positioning the intermediate lever and the second strut in respective positions for their engagement with each other; (g) a first strut engaged with one of the second arcuate brake shoe and the intermediate lever; (h) a parking lever which is engaged with the other of the second arcuate brake shoe and the intermediate lever, and which is operable to be pivoted to be engaged with the first strut whereby the two brake shoes are moved away from each other by a link mechanism constituted by the first and second struts and the intermediate lever, so that the brake assembly acts as a duo-servo brake; and (i) a stopper which limits a displacement of the second strut relative to the intermediate lever in a direction away from the web, for preventing disengagement of the second strut from the intermediate lever.

Dual-mode drum brake assembly having provision for preventing disengagement of members to be mutually engaged

Growing community of inventors

Anjo, Japan

Mitsuyasu Mizuno