The present disclosure relates to vehicle drum brakes. In one aspect, there is provided a brake shoe comprising a guide at or near its free end, which prevents brake shoe misalignment. According to a further aspect, there is provided a guide for attachment to a brake shoe at or near its free end, which prevents brake shoe misalignment. According to a further aspect, there is provided a drum brake assembly comprising a brake shoe comprising the guide.

A clutch of a clutch device is provided between a first transmission portion and a second transmission portion that are rotatable relative to a housing. A state changing unit is configured to receive a force in an axial direction from a translation portion and change a state of the clutch to an engaged state or a non-engaged state according to a relative position in the axial direction of the translation portion with respect to the housing. An urging member is configured to urge the translation portion in a direction to switch the clutch from the engaged state to the non-engaged state. A retainer member is fixed directly to the housing and is configured to restrict an axial position of the urging member.

A drive train assembly (200) for a personal care device (10), comprising a torsion spring (210) suspended between a first end mount (220) and a second end mount (230), the torsion spring comprising a first end mounted to the first end mount and a second end mounted to the second end mount, wherein the first and second ends of the torsion spring each comprises a cross flexure spring hinge (250, 260).

In a method for producing a brake disc, a friction surface layer is sprayed onto the base body or onto an intermediate layer applied on the base body by cold gas spraying a particle mixture which consists 25 to 75% by weight of a metal matrix material and 75 to 25% by weight of a carbide material. The metal matrix material consists of an iron-based alloy, nickel-based alloy, titanium or titanium alloy. The carbide material consists of tungsten carbide, titanium carbide, iron carbide, silicon carbide, chromium carbide or niobium carbide.

The invention concerns a brake piston for a vehicle brake, the brake piston comprising: a first member comprising a first piston end portion for resting against a brake pad of the vehicle brake; a plurality of pipe-shaped second members that are each integrally formed with or connected to the first member and each comprise at least one brake fluid receiving portion that extends along a longitudinal axis of the brake piston.

The present disclosure relates to vehicle drum brakes. In one aspect, there is provided a brake shoe comprising a guide at or near its free end, which prevents brake shoe misalignment. According to a further aspect, there is provided a guide for attachment to a brake shoe at or near its free end, which prevents brake shoe misalignment. According to a further aspect, there is provided a drum brake assembly comprising a brake shoe comprising the guide.

The disclosure relates to a vehicle brake actuator and an electromechanical brake. The vehicle brake actuator comprises a brake housing, a spindle drive which is arranged in the brake housing and which has a spindle and a spindle nut mounted on the spindle, and a brake piston and a pot sleeve. The brake piston is movable between a retracted and a deployed position in order to apply a brake pad to a brake rotor. The brake piston is at least partially guided in axially displaceable fashion in an interior space of the pot sleeve. The pot sleeve has a base and is pushed in its longitudinal direction into the brake housing and is mounted radially therein.

A spindle drive for an actuator assembly of a vehicle brake is provided, with a spindle and a spindle nut mounted on the spindle, which forms an actuating carriage which can be displaced between a retracted and an extended position in order to apply a brake lining against a brake rotor. The spindle nut has a pressure-distributing element at an end of the spindle nut which is close to the brake lining, and a contact surface of the pressure-distributing element which faces away from the spindle is continuously or discontinuously annular. Furthermore, an actuator assembly with a spindle drive is provided. In addition, a method for producing a spindle drive is provided.

A method for detecting and measuring a braking force and/or a braking torque deriving from actuation of a vehicle braking system includes incorporating a fiber-optic strain sensor of fiber Bragg grating type in a respective position in a portion of material of the body of the brake caliper susceptible to deformation, detecting, by the fiber-optic strain sensor local deformation and/or strain acting in the respective position, generating a respective first photonic signal representative of the detected deformation and/or strain, receiving the first photonic signal, by an optical reading/interrogation unit optically connected to the fiber-optic strain sensor, generating, by the optical reading/interrogation unit, a first electrical signal representative of the local detected deformation and/or strain, based on the received first photonic signal, and processing the first electrical signal to obtain a measurement of the braking force and/or braking torque. A sensorized brake caliper and a corresponding system to detect and measure a braking force and/or braking torque are also described.

A friction brake body for a friction brake of a motor vehicle, in particular a brake disk, includes a base body made in particular from gray cast iron and having at least one wear resistant layer formed on a friction contact surface of the base body. The wear resistant layer is made from ferritic-austenitic steel and includes an incorporated hard material particle, in particular finely distributed hard material particle.