An illustrative example drum brake device includes a drum having an inner, braking surface. At least one brake shoe includes a friction lining and a support structure for the friction lining. The support structure includes a window having a first portion that is wider than a second portion. A shoe mount is configured to be received through the first portion of the window and engage the support structure adjacent the second portion of the window in a manner that resists movement of the brake shoe in two dimensions and allows selective movement of the brake shoe in a third dimension for allowing the friction lining to selectively engage the braking surface.

An illustrative example drum brake device includes a drum having an inner, braking surface. At least one brake shoe includes a friction lining and a support structure for the friction lining. The support structure includes a window having a first portion that is wider than a second portion. A shoe mount is configured to be received through the first portion of the window and engage the support structure adjacent the second portion of the window in a manner that resists movement of the brake shoe in two dimensions and allows selective movement of the brake shoe in a third dimension for allowing the friction lining to selectively engage the braking surface.

A shield assembly is employed for a friction brake used to decelerate a road wheel of a vehicle. The vehicle has a body with a first body end configured to face an incident ambient airflow, a second body end opposite of the first body end, and an underbody section spanning a distance between the first and second ends. The shield assembly includes a first shield component arranged proximate the brake and rotationally fixed relative to the vehicle body. The shield assembly also includes a second shield component operatively connected to the first shield component for shifting relative thereto. The shield assembly additionally includes an actuator employing a shape memory alloy element to shift the second shield component relative to the first shield component in response to a temperature of the brake to thereby direct at least a portion of the airflow to the brake and control temperature thereof.

A novel, particularly rationally designed, modular parking brake actuator for an electric drum brake system. An axle A1 from the motor, including a screw gear pinion coupled in a rotationally fixed manner, and an axle of the spindle arrangement, including a screw gear which is coupled in a rotationally fixed manner to the drive nut, define under a deflection of 90 a single wheel gearbox stage of the parking brake actuator.

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.

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.

The disclosure relates to a method for operating a hydraulic brake system of a motor vehicle. The method comprises recording a value that is representative of a transfer function of the brake system, and comparing the recorded value with a threshold value. The method further comprises generating an error signal if the recorded value exceeds the threshold value. The value may be indicative of a brake pressure, a brake pressure request signal and a decreasing acceleration of the motor vehicle.

A drum brake assembly includes a brake drum, a brake shoe and lining assembly operably displaceable to contact the brake drum, and an electric actuator assembly. The electric actuator assembly has an electric motor with an output shaft, a gear reduction driven by the output shaft, a linear translation assembly having a gear nut driven by the gear reduction, and a connection portion of the linear translation assembly. The output shaft drives the gear reduction through a suitable gear type that can convert a rotation torque of the output shaft to the gear reduction at a right angle. The linear translation assembly linearly translates when the gear nut is driven. As a result of the linear translation, the connection portion actuates the brake shoe and lining assembly to contact the brake drum.

A drum brake according to an embodiment of the present disclosures, which is a drum brake including a drum configured to rotate together with wheels, and a first brake shoe and a second brake shoe to which linings that rub against an inner circumferential surface of the drum are attached, includes: a first pivot fixing part configured to fix one end of the first brake shoe in a pivoting manner so that the first brake shoe outwardly operates and thus the lining of the first brake shoe rubs against the inner circumferential surface of the drum when the first brake shoe pivots in one direction with respect to the one end of the first brake shoe; and a second pivot fixing part configured to fix one end of the second brake shoe in the pivoting manner so that the second brake shoe operates outwardly and thus the lining of the second brake shoe rubs against the inner circumferential surface of the drum when the second brake shoe pivots in the other direction with respect to the one end of the second brake shoe.

A drum brake according to an embodiment of the present disclosures, which is a drum brake including a drum configured to rotate together with wheels, and a first brake shoe and a second brake shoe to which linings that rub against an inner circumferential surface of the drum are attached, includes: a first pivot fixing part configured to fix one end of the first brake shoe in a pivoting manner so that the first brake shoe outwardly operates and thus the lining of the first brake shoe rubs against the inner circumferential surface of the drum when the first brake shoe pivots in one direction with respect to the one end of the first brake shoe; and a second pivot fixing part configured to fix one end of the second brake shoe in the pivoting manner so that the second brake shoe operates outwardly and thus the lining of the second brake shoe rubs against the inner circumferential surface of the drum when the second brake shoe pivots in the other direction with respect to the one end of the second brake shoe.