A disk brake with lower cost and improved maintainability is provided. The brake caliper includes at least one actuating device for actuating the disc brake using a moveably guided bridge. The bridge has at least one threaded hole into which an actuating spindle is displaceably located. A brake disk end of the actuating spindle penetrates a caliper closing plate facing the brake disk. The positioning spindle carries a rotatably-mounted pressure piece which presses a brake pad against the brake disc. The opening is sealed by a bellows retained on the brake caliper on one side and on the pressure piece on the other side. A securing ring non-rotatably located on the actuating spindle and rotatably connected to the thrust piece interacts with the bellows during brake application and/or release to maintain a desired air gap between the brake disk and brake pad.

A vehicle brake (2, 102), in particular a utility vehicle compressed-air disc brake, includes a brake caliper (4, 104), a pressure piece guide (8, 108), which is arranged in the brake caliper (4, 104), and a pressure piece (6, 106), which is guided in the pressure piece guide (8, 108) along a movement axis (10, 110). The pressure piece guide (8, 108) is designed as a recess (12, 112), and the pressure piece (6, 106) has an outer contour (14, 114) corresponding to the recess. The pressure piece guide (108) and/or the outer contour (14) of the pressure piece are/is divided, on both sides of the pressure piece (6), into a plurality of curved, mutually spaced partial surfaces (16, 116).

A brake caliper (1, 1′) for a vehicle brake, in particular a disc brake of a commercial vehicle, includes a pressure piece (110, 110′), a thrust piece (120, 120′) configured to move axially relative to the pressure piece (110, 110′) in a thrust direction (A) to transmit a braking force and a guiding member (130a,b, 130′a,b) configured to limit the movement of the thrust piece (120, 120′) relative to the pressure piece (110, 110′) in at least one direction orthogonal to the thrust direction (A). The brake caliper (1, 1′) may further include a lever (140) pivotally supported between the thrust piece (120, 120′) and the pressure piece (110, 110′), wherein the guiding member (130a,b, 130′a,b) is configured to limit the movement of the lever (140) relative to the pressure piece (110, 110′) and/or the thrust piece (120, 120′) in at least one direction orthogonal to the thrust direction (A).

The invention proposes a disc brake having a brake caliper (1) and a tensioning device arranged therein for applying force to the brake linings of the disc brake, wherein part of the tensioning device is a brake lever (10) which can be actuated by a force element and preferably by a compressed air cylinder. The brake lever is composed of a lever arm (14), against which the force element is supported, and a brake application shaft (15), which is supported against a pressure piece (8) acting towards the brake linings, and is also supported from the inside against the brake caliper, wherein the brake caliper (1) and the brake application shaft (15) face each other and are formed as shells (21, 22) in which a supporting roller (20) with a roller axis (A) running transverse to the tensioning direction (Z) is mounted. To keep the mutual movability of the parts involved low by the simplest measures possible and without the need for additional parts, the supporting roller (20) is supported with the lateral surface (20A) thereof directly in one of the two shells (21, 22) and is designed to be non-rotatable or have only limited rotational movement with respect to this shell. The supporting roller (20) also serves as a means to centre the brake lever (10) laterally in the brake caliper. A supporting roller particularly suited to these purposes is also to be created.

Disk brake including a brake caliper and an application device arranged therein for applying force to the brake pads of the disk brake, wherein a component of the application device is a brake lever which can be actuated by a force element and preferably by a pressure cylinder and is composed of a lever arm against which the force element is supported and an application shaft. The application shaft is supported, on one side, against a pressure piece operating in the direction of the brake pads and, on the other side, with the interposition of a shell, against a channel arranged on the inside of the brake caliper, wherein the curvature of the shell is complementary to the curvature of the channel. In order to develop the disk brake and the shell assembly by constructive measures so as to prevent the shell assembly from moving out of the original position even in the case of long-term use and under frequent load caused by braking, an opening of a bore is located in the channel.

A disk brake is proposed for a vehicle, preferably a commercial vehicle, having a brake caliper which engages over a brake disk and brake linings on both sides of the brake disk, a brake application device (5) which can be actuated by way of a force element, preferably a pneumatic force element, an adjusting device (20) for compensating for the brake lining and brake disk wear, which adjusting device (20) is arranged on an adjusting axis (L) which extends in the brake application direction, and is provided with a drive element (27) which can be rotated about the adjusting axis (L), and a brake lever (10) which is a constituent part of the brake application device (5) and is composed of a brake application shaft (11) which on one hand is supported in relation to the brake caliper and on the other hand in relation to a pressure piece (8) which operates against one of the brake linings, and a lever arm (12) which can be pivoted with the brake application shaft (11) and the pivoting center line of which extends at a right angle with respect to the brake application shaft (11), and which lever arm (12) is provided with a support (16) for the force element in the region of its outer end (12A), the brake lever (10) having a clearance (40) in an extension of the lever arm (12) to the inside, through which clearance (40) the adjusting axis (L) extends, a mechanism which couples the brake lever (10) to the drive element (27), and which is composed of a first mechanism element (31) on the brake lever (10) and a second mechanism element (32) on the drive element (27), which second mechanism element (32) interacts with said first mechanism element (31).

In order to provide as much installation space as possible for the brake application shaft, the first mechanism element (31) is arranged at the inner end (12B) of the lever arm (12) in the plane (E) which is defined by the pivoting movement (S) of the lever arm (12).

A brake includes a brake shoe moveable between an engaged position and a disengaged position and defining an axis of rotation of an associated brake drum. The brake includes an actuation shaft rotatable about a shaft axis and an actuation device for transferring rotational movement of the actuation shaft into movement of the brake shoe from the disengaged position to the engaged position. The axis of rotation is non-parallel to the shaft axis.

A cast iron brake caliper of a disc brake, includes a caliper back and caliper head. connected to the caliper back via tension struts arranged parallel and spaced apart from one another. The caliper head has a housing surrounding an accommodation chamber for functional parts and, separate from and adjacent to the housing, an integrally molded, protruding connector, which accommodates a bearing bore for a fixed bearing, and is connected to the housing by way of an integrally molded rib. The brake caliper is designed such that the rib is guided across the connector up to and into an outer edge region of the caliper head.

An electrically actuated brake assembly includes a brake disc, a brake pad, and an electric motor having a rotatable output shaft. A service brake transmission in operative rotational communication with the output shaft causes service braking of the vehicle in response to rotation of the output shaft, and an adjuster mechanism is operable to adjust a distance between the brake pad and the brake disc. An adjuster transmission operatively connected between the output shaft and the adjuster mechanism causes operative rotational communication between the output shaft and the adjuster mechanism when the adjuster transmission is engaged so as to transmit rotational movement of the output shaft to the adjuster mechanism, and causes there to be no operative rotational communication between the output shaft and the adjuster mechanism when the adjuster transmission is disengaged so as to not transmit rotational movement of the output shaft to the adjuster mechanism.

A device for actuating a brake shoe of a brake, in particular a disk brake, includes a pivotably mountable lever element, and a transmission element configured to be mounted in a longitudinally movable fashion is such that a pivot movement of the lever element is translated into a longitudinal movement of the transmission element wherein a hydraulic chamber configured to be filled with a hydraulic fluid is arranged between the brake shoe and the transmission element for the transmission of force between the brake shoe and the transmission element.