Actuating system for a drum brake

A drum brake, braking system technology, applied in drum brakes, mechanically driven drum brakes, brake types, etc., can solve problems such as difficult combination, dependence on braking efficiency, and complex design
CN102207144BInactive Publication Date: 2014-06-11SAF HOLLAND GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SAF HOLLAND GMBH
Publication Date
2014-06-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

An actuating system for a drum brake of a vehicle, in particular of a commercial vehicle or an agricultural machine, comprising at least a brake lining carrier (2) which is guided on a brake bracket (4), an actuating element (6; 60) in order to move the brake lining carrier (2) towards the inner circumference of a brake drum (52), and a setting means (8) in order to control the actuating element (6; 60), wherein the actuating element (6; 60) is designed as a hollow body, in the cavity (10) of which an axle body (50; 150) is accommodated.
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Description

technical field

[0001] The invention relates to an actuation system for drum brakes of vehicles, in particular for commercial vehicles or agricultural machines. Background technique

[0002] Such devices are known in the prior art. For example, DE 40 35 943 A1 discloses a drum brake whose brake linings are arranged in such a way that they are pivotable on one side and on the other side they are directed towards the inner side of the drum by means of an S-shaped cam. Move around. Due to this asymmetrical actuation, the problem with such actuation systems is that a force balance cannot be ensured, especially with regard to wear on the linings, deformation of the brake drum during braking and influences due to the manufacturing process. Moreover, such brake actuation systems for drum brakes are designed to be very complex, and in addition, due to the non-linear characteristics in the braking process, the braking efficiency depends on each operating point, so they are difficul...

Claims

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