An actuator arrangement for operating a clutch and a parking lock in a driveline of a motor vehicle comprises: a clutch having a clutch actuating member configured to drivingly connect or disconnect a clutch input part and a clutch output part; a parking lock having a locking element movable to a locking position to lock a ratchet wheel, and to a release position to release the ratchet wheel; and a parking lock actuating member for actuating the locking element; a controllable actuator with a movable actuator setting member which is movable into at least three setting positions and is operatively connected to the clutch actuating member and to the parking lock actuating member such that in a first setting position the parking lock is closed, in a second setting position the clutch is closed, and in a third setting position the clutch and the parking lock are opened.

A device (1) for actuating a parking lock device (2) of an automatic transmission includes a piston (3) guided in a cylinder (5) and hydraulically displaceable counter to a spring force of an actuation spring (4). The piston (3) is form-lockingly fixable in a first position and in a second position by radially displaceable blocking elements (26) of a blocking device (15). The blocking elements (26) are radially displaceable by an actuation element (17). The radial displacement path of the blocking elements (26) and an operating condition of the actuation element (17) corresponding thereto in the first position of the piston (3) deviate from the radial displacement path of the blocking elements (26) and the operating condition of the actuation element (17) corresponding thereto in the second position of the piston (3).

A bicycle braking and parking device includes a casing, two brake pads, a locking pin, and an electromagnetic driver. The casing has an accommodation space and two pistons located at two opposite sides of the accommodation space. The accommodation space can accommodate part of a brake disk. The brake pads are located at the accommodation space and located between the pistons. The pistons can push the brake pads, and the brake pads can clamp the brake disk. The locking pin is movably disposed on the casing. The electromagnetic driver can force the locking pin to move between a released position and a locked position. when the locking pin is in the released position, the locking pin is separated from the brake disk. When the locking pin is in the locked position, the locking pin is inserted into the brake disk to limit a motion of the brake disk.

The present application relates to a wheel braking mechanism, a frame and a child carrier. The wheel braking mechanism includes a wheel base housing assembly, a braking assembly mounted in the wheel base housing assembly, and a braking pin connected to the braking assembly. A side wall of the wheel base housing assembly is provided with a sliding hole configured to allow the braking pin to extend through. The braking pin is capable of sliding in the sliding hole between a locking position and an unlocking position. The wheel braking mechanism further includes a dust shield. The dust shield is engaged with the braking pin and shields the sliding hole to prevent external debris from entering an interior of the wheel base housing assembly through the sliding hole.

A wheel locking device comprising a number of interlocking components that are adapted to receive a wheel (or a wheeled apparatus), and said components can be adjusted to accommodate a variety of wheels of different diameters. The wheel locking device further comprises a rotatable and adjustable bar that is utilized to secure the wheel in place. In further embodiments, the device comprises a lock receiving bore which is adapted to receive a lock.

A commercial vehicle includes at least one driven axle, a service brake, at least one propulsion engine, and wheels. A parking brake function of the vehicle is achieved by a bistable locking means that acts on both wheels. A first and second multi-speed gearbox having respective first and second gear stages are each activated by an actuator and coupled to the wheels. The parking brake function is achieved at least in-part by concurrently activating the first and second gear stages. A computing device is configured to activate the bistable locking means when the commercial vehicle is at a standstill and configured to send a brake request via an electronic signal to an electronic brake control unit to activate the service brake.

A riding lawn care vehicle (10) may include a frame (60), a steering assembly (30), a brake assembly (110), and a mechanical brake linkage assembly (120). At least a first drive wheel (32) and a second drive wheel (32) of the riding lawn care vehicle (10) may be attachable to the frame (60). The steering assembly (30) may include a first steering lever (34) and a second steering lever (34), where the first and second steering levers (34) are operably coupled to the first and second drive wheels (32) respectively to facilitate turning of the riding lawn care vehicle (10) based on drive speed control of the first and second drive wheels (32) responsive to positioning of the first and second steering levers (34) along a first direction when the first and second steering levers are in an operating position. The brake assembly may be operably coupled to the first and second drive wheels (32) to enable brakes to be selectively applied to the first and second drive wheels (32). The mechanical brake linkage assembly (120) may be configured to activate the brake assembly (110) relative to the first and second drive wheels (32) in response to movement of the first and second steering levers (34) in a direction parallel to the first direction after the first and second steering levers (34) have been moved from the operating position to a non-operating position.

Some embodiments relate to an electro-mechanical actuator that includes a screw, structurally segregated (split) housings, first and second nuts coupled to the screw, a sensor assembly, a plurality of motors, and a controller. The first nut is coupled to a first mounting point, and the second nut is coupled to a second mounting point. The sensor assembly may generate signals indicative of (e.g., relative) positions of left and right units of the actuator or positions of the first nut and the second nut on the screw. The controller controls the motors based on the signals generated by the sensor assembly. The motors may rotate each nut about a screw axis of the screw. This rotation results in one or both nuts moving along the screw. Movement between the first nut and the second nut along the screw adjusts a distance between the first mounting point and the second mounting point.

Disclosed is a locking unit having a piston and serving for locking the movement of the piston which can be acted on with pressure of a fluid. The locking unit can additionally have an electromagnet and at least one detent element. The detent element interacts with an armature or an armature rod of the electromagnet, and the piston has at least one detent receptacle, where the piston can be secured by the retaining interaction of the detent element with the detent receptacle. The piston is adjustable between a retracted position and an extended position. The piston is mounted at least partially in a middle piece which is surrounded at least partially by a housing, and the middle piece is configured in two parts from a metal part and a plastic part.

A locking arrangement for an electric vehicle, that includes a locking unit, an electric motor, and an axle which is driveable by the electric motor. The locking unit can have a piston and serve for locking the movement of the piston which can be acted on with pressure of a fluid. The locking unit has an electromagnet and at least one detent element, and the detent element interacts with the armature or the armature rod of the electromagnet, and the piston has at least one detent receptacle, and the piston can be secured by the retaining interaction of the detent element with the detent receptacle. The piston can be adjustable between a retracted position and an extended position. The piston can act in at least one of the two positions on the axle in such a manner that the rotation of the axle is mechanically blocked.