摘要:
Apparatus for a lever (6) for controlling a parking brake including brake units and an electrically driven tightening means for applying or releasing a braking force on the said brake units. Characteristic of the invention is that a means is arranged to detect the position of the lever and produce control signals to a first electric motor (12) for generating a brake force corresponding to the position of the lever. The lever can be adjusted manually. Further there is a second electric motor (49) intended to automatically control the lever (6) depending on incoming control signals. In the fully applied position the lever (6) is locked against manual adjustment.
摘要:
The invention relates to an electromechanical wheel brake device, having a screw link actuator, which is supported in a floating caliper. The screw link actuator can be driven by an electric motor, and can press a frictional brake lining against one side of a brake disc and can press a second frictional brake lining against another side of the brake disc by means of a reaction force by way of the floating caliper. In order to permit a release of the wheel brake device in the event of a malfunction, brake device embodies the screw link actuator as selflocking-free, supporting a spindle nut and a threaded spindle in rotary fashion, and securing the threaded spindle against rotation by means of a releasable rotation prevention device. The threaded spindle is connected in a rotationally secured and axially mobile fashion by means of a positive engagement. In the event of a malfunction, the rotation prevention device is released and the frictional brake lining, which is pressed with force against the brake disc, presses the threaded spindle away from the brake disc, wherein the threaded spindle is set into rotation and moves away from the brake disc.
摘要:
An electrically powered parking brake and a system and method for controlling and operating the parking brake, both during parking and during vehicle operation. The parking brake includes an electronic control module determining the amount of tension in the cable as a function of current drawn by an electric motor and a feature that allows determination of the distance traveled by the brake tensioning cable upon release of the brake. The brake is operable during vehicle motion using a modulated mode. Other features include use of a screw mechanism for cable tensioning, automatic adjustment of the brake in response to brake wear, and sensing of vehicle transmission position and vehicle speed for use in conjunction with modes of operation.
摘要:
A parking brake actuation assembly is provided including an electric motor and a first rotatable member operatively connected to the electric motor so as to enable the motor to rotate the first rotatable member in a brake applying rotational direction. The first rotatable member normally is prevented against rotation in a brake releasing rotational direction. A second rotatable member is rotatable relative to the first rotatable member and includes cable attachment structure for affixing a brake activation linkage thereto. A clutch spring is disposed between the first and second rotatable members and is configured to contract upon initiation of rotation of the first rotatable member in the brake applying direction so as to couple the second rotatable member to the first rotatable member for affecting rotation of the second rotatable member in the brake applying direction.
摘要:
A mechanical release for an electric parking brake has a first cable engaging a housing. A second cable is connected to a lever that is pivotally supported on the housing by a pivot pin. A locking member engages the lever and prevents rotation of the lever when tension is applied to the cables. When the locking member is released, the lever is free to rotate, reducing tension in the cables and freeing the parking brake system.
摘要:
The present invention discloses an electromechanically operable disc brake for automotive vehicles which comprises a floating caliper as well as an actuating unit arranged on the caliper. The actuating unit includes an electric motor which, by the intermediary of a reduction gear, readjusts an actuating element which is used to move one of two friction linings that are slidable in the brake caliper into engagement with a brake disc. To permit an individual adjustment of the desired brake force, especially for use of the disc brake in an automotive vehicle, according to the present invention, a force-measuring device (23) is interposed in the flux of force between the caliper (1) and the actuating unit (2), and the output signals of device (23) are adapted to be sent to a control circuit (26) that influences the current supplied to the electric motor (6), and/or the voltage.
摘要:
An electrical vehicle parking brake device capable of reducing the size towards a cable shaft and improving the degree of freedom of mounting in a vehicle is provided for the electrical vehicle parking brake device of controlling the braking force to a wheel due to the driving power of a motor which is transmitted by way of a cable at the time of parking the vehicle. At the time of parking the vehicle, in the electrical vehicle parking brake device of controlling the braking force to the wheel due to the driving power of a motor which is transmitted by way of a gear mechanism and a cable at the time of parking the vehicle, an end gear series of the gear mechanism is structured of an external gear and an internal gear, the external gear uses a K-H-V type planetary gear mechanism in which external gear turns to the extent of a difference between the numbers of teeth between the external gear and the internal gear by making one revolution in an inner circumference side of the internal gear and also the cable is wound up in a circular shape in the external gear.
摘要:
Apparatus, method and program product that controls the release of an electronically activated parking brake. An algorithm adjusts for cable stretch and limits the occurrence of over-release and wheel drag within the brake system. A controller monitors force incident on an actuator during a brake release operation. When a preset load is indicated, the controlling parameter of the algorithm transitions from force to position control. Once in position control, the controller uses previous position measurements and equipment specific constants to calculate a release point.
摘要:
Method of braking a vehicle driven by an electric motors in particular a industrial truck, where the rotational speed of the motor is reduced according to a predetermined deceleration characteristic (a-d) when baking is activated. Preferably the deceleration characteristic is chosen in dependency of the length of depression of a brake pedal.
摘要:
The invention concerns an electromechanical brake, in particular a disc brake (10), comprising a brake pad (14) which can be urged against a brake disc (16) by means of an electromotive actuating arrangement (18). According to the invention, in order to be able to release the brake (10) in the event of an electronic component failing, for example, a releasable support device (42) supports the actuating arrangement (18) on a brake calliper (12) when the brake pad (14) is urged against the brake disc (16). In order to release the support device (42), its distance from the brake disc (16) is increased such that the actuating arrangement (18) and together therewith the brake pad (14) are released from the brake disc (16).