A drum brake assembly for use with a wheel end electric drive motor arrangement can generate brake dust, which may accumulate on the electric motor and cause heat retention problems that are detrimental to motor performance and longevity. These issues are addressed by providing an assembly including a support attachable to a vehicle axle element, brake shoes pivotally mountable on the support, and a wheel spindle interconnected with one end of the axle element. A wheel hub is rotatable around the spindle, and an electric motor unit is disposed between an end of the axle element and the spindle to produce rotation of the hub relative to the axle element. A brake drum is securable to the hub for rotation with the hub relative to the spindle by way of the electric motor unit. The brake drum includes a circumferential perimeter wall overlying the brake shoes, and a fan rotor is interconnected with that wall for rotation together with the drum and the wheel hub relative to the spindle. A perforated dust shield is attachable to the support on an axial side of the brake shoes opposite the fan rotor, such that, during vehicle operation, air drawn by blades on the fan rotor through openings in a wall of the brake drum carries debris out through perforations in the dust shield and away from the wheel end motor and brake assembly. A vehicle including the assembly mentioned and a process of ventilating that assembly are also discussed.

Disclosed herein an electric parking brake. The electric parking brake according to an embodiment of the disclosure includes a power transmission unit that receives a rotational force from an actuator that generates a driving force for implementing a parking braking force and converts the rotational force into a linear motion to press or release a pair of brake shoes disposed on both sides of an inside of a drum, respectively, wherein the power transmission unit includes a pressing piston configured to press the pair of brake shoes, a driving cylinder configured to guide the pressing piston, and a dust cover installed between the pressing piston and the driving cylinder, the dust cove formed to be deformable according to an operation of the pressing piston, wherein the dust cover is configured to maintain internal airtightness of the power transmission unit and prevent foreign substances from entering.

An electric parking brake device for a vehicle, including: a drum brake arranged on a radially inner side of a rim portion; and an electric actuator which enables obtaining a parking brake state by driving the drum brake, the electric actuator being mounted to a side surface of a back plate on an inner side in a vehicle-width direction. An ice and snow accumulation suppressing member (54) including a wall portion (54a), which extends from the back plate to the inner side in the vehicle-width direction while facing an inner peripheral surface of the rim portion (40b) and which is arranged at least below an anchor portion (21), is mounted to an outer peripheral edge portion of the back plate (13). With this configuration, collision of ice and snow refrozen in a wheel with the electric actuator can be prevented.

A drum brake apparatus includes a housing; a main braking unit installed on one part of the housing, and driven by a hydraulic pressure and pressing a shoe, during main braking; and a parking braking unit installed on the other part of the housing, and driven by an electromotive force of an actuator and pressing the shoe, during parking braking, the parking braking unit includes a bevel gear section disposed in the housing while having a structure of a bevel gear, and rotated in association with the actuator; and a rod section connected with the bevel gear section, and moved out of the housing in association with the bevel gear section and pressing the shoe.

A heat-dissipating car caliper cover comprising a cover body and a fixing member for fixing the cover body to a car caliper, wherein a first arc-shaped side plate is provided on an outer side of the cover body, a second arc-shaped side plate is provided on an inner side of the cover body, the fixing member is provided on the first arc-shaped side plate, a heat transmission assembly is provided on the first arc-shaped side plate, and the heat transmission assembly comprises an elastic pressing sheet and a silicone sheet provided on the elastic pressing sheet; and when the cover body is fixed to the car caliper, the elastic pressing sheet can contact the silicone sheet with a pump body outer side wall of the car caliper, and conducts heat to the cover body for heat dissipation.

A fixing structure of an automobile caliper cover is used for fixing a caliper cover body to an automobile caliper. The fixing structure includes a first fixing member and a second fixing member. The first fixing member includes a connection bracket, a first bent portion fixedly connected to the connection bracket, and a second bent portion cooperating with the first bent portion and fixing the connection bracket to the car caliper; and the first bent portion and the second bent portion are fixedly connected; and/or the second fixing member includes a connection bracket and a fixing buckle fixedly connected to the connection bracket, in which the fixing buckle is used for fixing the connection bracket to the automobile caliper. The connection bracket has at least one bent portion to enhance a strength of the connection bracket and facilitate fastening installation of the connection bracket.

A fixing structure of an automobile caliper cover is used for fixing a caliper cover body to an automobile caliper. The fixing structure includes a first fixing member and a second fixing member. The first fixing member includes a connection bracket, a first bent portion fixedly connected to the connection bracket, and a second bent portion cooperating with the first bent portion and fixing the connection bracket to the car caliper; and the first bent portion and the second bent portion are fixedly connected; and/or the second fixing member includes a connection bracket and a fixing buckle fixedly connected to the connection bracket, in which the fixing buckle is used for fixing the connection bracket to the automobile caliper. The connection bracket has at least one bent portion to enhance a strength of the connection bracket and facilitate fastening installation of the connection bracket.

A heat-dissipating car caliper cover comprising a cover body and a fixing member for fixing the cover body to a car caliper, wherein a first arc-shaped side plate is provided on an outer side of the cover body, a second arc-shaped side plate is provided on an inner side of the cover body, the fixing member is provided on the first arc-shaped side plate, a heat transmission assembly is provided on the first arc-shaped side plate, and the heat transmission assembly comprises an elastic pressing sheet and a silicone sheet provided on the elastic pressing sheet; and when the cover body is fixed to the car caliper, the elastic pressing sheet can contact the silicone sheet with a pump body outer side wall of the car caliper, and conducts heat to the cover body for heat dissipation.

A drum brake assembly for use with a wheel end electric drive motor arrangement can generate brake dust, which may accumulate on the electric motor and cause heat retention problems that are detrimental to motor performance and longevity. These issues are addressed by providing an assembly including a support attachable to a vehicle axle element, brake shoes pivotally mountable on the support, and a wheel spindle interconnected with one end of the axle element. A wheel hub is rotatable around the spindle, and an electric motor unit is disposed between an end of the axle element and the spindle to produce rotation of the hub relative to the axle element. A brake drum is securable to the hub for rotation with the hub relative to the spindle by way of the electric motor unit. The brake drum includes a circumferential perimeter wall overlying the brake shoes, and a fan rotor is interconnected with that wall for rotation together with the drum and the wheel hub relative to the spindle. A perforated dust shield is attachable to the support on an axial side of the brake shoes opposite the fan rotor, such that, during vehicle operation, air drawn by blades on the fan rotor through openings in a wall of the brake drum carries debris out through perforations in the dust shield and away from the wheel end motor and brake assembly. A vehicle including the assembly mentioned and a process of ventilating that assembly are also discussed.

A drum brake apparatus may include: a housing; a main braking part installed at one side of the housing, and driven by hydraulic pressure to pressurize shoes during main braking; and a parking braking part installed at the other side of the housing, and driven by an electromotive force to pressurize the shoes during parking braking.