In caliper seal structure, region on one side of caliper main body in axial direction of cylinder with respect to piston seal is set as fluid pressure side where fluid pressure is received, region on other side of caliper main body in axial direction of cylinder with respect to piston seal is set as atmospheric side that opens to atmosphere, and groove forming portion includes holding portion that sets groove width of seal groove in axial direction as first groove width and that is configured to hold piston seal by making inner side surfaces of seal groove in axial direction contact with outer side surfaces of piston seal in axial direction, respectively, and enlarged portion that sets groove width of seal groove in axial direction as second groove width which is increased to one side in axial direction so as to be greater than first groove width.

An elastomer sealing ring and to a sealing system for an electric motor vehicle disk brake, has an actuating element removeably mounted in a housing compartment. The sealing system has multilateral interfaces and the elastomer sealing ring including a bearing, in a sealing receptacle the elastomer sealing ring blocks at least one or more sealing gap(s) between a brake housing and the actuating element concentrically with respect to the actuating element and laterally next to a cavity. The elastomer sealing ring/sealing are suitable and intended for electrically actuatable motor vehicle disk brakes. The elastomer sealing ring has a partially symmetrical elastomer sealing ring cross section and in cooperation with interfaces, a gap seal adapted is made possible.

The present invention relates to an anti-drag structure of automobile brake calipers, comprising a brake caliper body which is provided with a cylinder bore and a brake claw arranged along the axis of the cylinder bore in an extending mode; and a cylindrical piston bush is pressed in the cylinder bore by interference fit, a step ring groove is formed in the inner wall of the piston bush and composed of a major diameter ring groove and a minor diameter ring groove which have rectangular sections. The present invention can improve the generality of the brake caliper body through the arrangement of the piston bush and improve the standardization of production manufacturing of brake calipers, and can reduce the residual drag moment of the brake caliper and the fuel consumption with the rubber seal ring and the phenolic resin PF ring to achieve the purpose of emission reduction.

A brake system that includes a brake piston and a spindle. The brake piston includes a piston pocket defined in the brake piston. The piston pocket includes a threaded portion. The spindle includes a threaded portion. The threaded portion of the spindle is adapted to threadably engage the threaded portion of the piston pocket.

A brake assembly may comprise: a brake piston configured to be movable for a brake apply or release, the brake piston having an inner wall forming a piston cavity; a linearly movable structure positioned within the piston cavity of the brake piston; the linearly moveable structure configured to be linearly movable within the piston cavity in response to rotation of a rotatable structure operably coupled to the linearly movable structure; and a magnet disposed between the brake piston and the linearly movable structure so that the brake piston is movable toward the linearly movable structure in response to linear movement of the linearly movable structure by magnetic field generated by the magnet. The magnet may function to provide active retraction of the brake piston when the linearly movable structure moves in a brake release direction during a brake release operation.

The present disclosure provides a disk brake capable of making it easier for the piston to return than conventional ones when the brake is released from a state where the brake is applied. In the disk brake, the seal groove 5 includes a front wall 51, a rear wall 52 farther from the brake rotor than the front wall 51 in the axial direction Dl, and a bottom wall 53 extending along the axial direction Dl between the rear wall 52 and the front wall 51. The bottom wall 53 includes a front bottom wall 53a adjacent to the front wall 51 and a rear bottom wall 53b adjacent to the rear wall 52. The rear bottom wall 53b has a depth d2 from the inner circumferential surface 42a of the cylinder 42, the depth d2 being larger than a dimension d3 of the uncompressed piston seal 6 in the direction of the depth d2 and being larger than a depth d1 from the inner circumferential surface 42a of the cylinder 42 of the front bottom wall 53a.

A sealing assembly for installation on a port of a spring brake actuator includes a plug, a one-way valve and a cap. The plug receives the one-way valve for providing one-way air flow through the orifices and maintaining about two psi in the spring brake chamber at zero stroke. An elastomeric piece is affixed to a first set of segments of the plug for sealing against an inner surface of the port. The cap has arms sized to extend around a third set of segments of the plug and snap onto the plug. A fourth set of segments of the plug elastically deform so the sealing assembly can be installed and removed from the port easily.

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.

A conducting element for conducting a pressurized fluid and for conducting a cooling fluid, as well as a hybrid module and a drive assembly having a hybrid module are provided. The conducting element for conducting a pressurized fluid for hydraulically actuating a clutch unit and for conducting cooling fluid for cooling a clutch unit has a cylindrical section and a securing section. At least one pressurized fluid channel is formed in the securing section for transporting pressurized fluid. The conducting element also has at least one cooling fluid channel which has at least one axial direction component in the cylindrical section, wherein the flow line element is fluidically connected to the cooling fluid channel for supplying a clutch unit and/or electric machine with cooling fluid. With this embodiment of the conducting element, a possibility for fluid conducting is created which combines the transport of cooling fluid and pressurized fluid in a fluidically separated manner and with limited axial installation space.

A caliper body for a brake caliper for a disc brake, arranged straddling a disc, has a first elongated portion configured to face a first braking surface of the disc by interposing at least one first brake pad, a second elongated portion, opposite the first elongated portion and configured to face a second braking surface of the disc by interposing at least one second brake pad. A caliper bridge connects the first and second elongated portions. At least either the first or second elongated portion has a thrust device housing receiving at least one portion of a thrust device, configured to apply a thrust action on at least one brake pad to abut the at least one brake pad against a braking surface of the disc. A first annular housing radially opens into the thrust device housing and receives an elastic retraction element that applies a retracting action on the thrust device.