Parking break

Patent metadata

Field	Value
Publication number	US-2017191537-A1
Application number	US-201715397108-A
Country	US
Kind code	A1
Filing date	Jan 3, 2017
Priority date	Jan 4, 2016
Publication date	Jul 6, 2017
Grant date	—

Abstract

A parking brake, particularly for a vehicle, includes a brake piston, supported to be movable along a longitudinal axis between a braking position and an open position, by which a brake disk is immobilizable by applying a braking force, when the brake piston is in the braking position, a drive unit for moving the brake piston along the longitudinal axis, and a toggle lever interacting with the brake piston and having at least first and second legs. The first and second legs are connected rotatably with a joint element and are actuatable by the drive unit, such that the toggle lever provides the braking force and applies it to the brake piston. An immobilizing device having such a parking brake, as well as a vehicle having the immobilizing device, and a method for immobilizing a vehicle by such an immobilizing device are also provided.

First claim

I/We claim:

1 . A parking brake, in particular for a vehicle, comprising:
a brake piston supported to be movable along a longitudinal axis between a braking position and an open position and by which a brake disk is immobilizable by applying a braking force when the brake piston is in the braking position, a drive unit by which the brake piston is movable along the longitudinal axis between the braking position and the open position, a toggle lever assembly that interacts with the brake piston and comprises a toggle lever having at least one first leg and one second leg, wherein the first leg and the second leg are connected rotatably with a joint element and are actuatable by the drive unit, and wherein the tomie lever assembly provides the braking force and applies it to the brake piston, and a support which supports the toggle lever assembly for providing the braking force.

2 . The parking brake according to claim 1 , wherein the brake piston encloses a hollow space, and at least one of the drive unit, the toggle lever assembly, and the support are arranged at least partially in the hollow space.

3 . The parking brake according to one of claim 1 , wherein the support comprises a wedge arrangement that wedges together with the support for supporting the toggle lever assembly.

4 . The parking brake according to claim 3 , wherein the wedge arrangement comprises a clamping wedge, which is actively connected to the toggle lever assembly.

5 . The parking brake according to claim 4 , wherein the wedge arrangement further comprises a clamping ring, which is movable by the drive unit along the longitudinal axis and interacts with the clamping wedge.

6 . The parking brake according to claim 3 , wherein the support comprises a support sleeve, which is movable relative to the brake piston along the longitudinal axis and on which the wedge arrangement is supported.

7 . The parking brake according to claim 5 , wherein the drive unit has a spindle and a nut movable on the spindle along the longitudinal axis, and wherein the nut comprises an actuation section to extend the joint element.

8 . The parking brake according to claim 7 , wherein the clamping ring is movable with the nut along the longitudinal axis.

9 . The parking brake according to claim 8 , wherein the clamping ring is connected to the nut by an extension element.

10 . An immobilizing device for immobilizing a vehicle, the device comprising:
a brake disk which is locked in rotation to a wheel of the vehicle, and a parking brake according to claim 1 .

11 . The immobilizing device according to claim 10 , wherein at least one of the brake piston and the brake disk has a friction lining.

12 . A vehicle having a parking brake according to claim 1 .

13 . A method for immobilizing a vehicle having an immobilizing device according to claim 10 , the method comprising the following steps:
a. moving a brake piston, supported to be movable along a longitudinal axis bewtween a braking position and an open position, into the braking position by a drive unit; and b. actuating a toggle lever assembly that interacts with the brake piston by the drive unit, wherein the toggle lever assembly comprises a toggle lever having at least one first leg and at least one second leg, wherein the first leg and the second leg are connected rotatably with a joint element, and wherein the toggle lever assembly provides the braking force and applies it to the brake piston, and wherein the toggle lever assembly is supported on a support.

Assignees

• Ims Gear Se & Co Kgaa

Inventors

• Hofschulte Wolfram
• Fechler Jens
• Goepfert Ronny
• Michel Roland

Classifications

• F16D65/18 Primary

  adapted for drawing members together {, e.g. for disc brakes} · CPC title

• F16D55/226 Primary

  in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} · CPC title

• F16D2121/24

  using motors · CPC title

• F16D2125/40

  Screw-and-nut · CPC title

• B60T13/741

  acting on an ultimate actuator · CPC title