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

Inactive Publication Date: 2014-06-11
SAF HOLLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this asymmetrical actuation, the problem with this actuation system is that it does not ensure a force balance, especially with regard to wear on the linings, deformation of the drum during braking and effects 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 difficult to use with the control System Composition for Vehicle Dynamics

Method used

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  • Actuating system for a drum brake
  • Actuating system for a drum brake
  • Actuating system for a drum brake

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 is a sectional view of a first preferred schematic embodiment of an actuation system for a drum brake of a vehicle according to the invention. The system comprises a brake lining 2 , a brake carrier 4 , an actuating part 6 and a setting part 8 .

[0022] The braking element 6 is designed as a tubular or annular body, which is rotatably or rotatably supported on a rigid shaft body 50 via a bearing element (not shown). For this purpose, the shaft body 50 extends through the hollow space 10 of the actuating part 6 . The actuation member 6 is rotatable about an axis of rotation x, which also coincides with the axis of rotation x of the brake drum 52 and the longitudinal axis of the shaft body 50 .

[0023] The actuating part 6 has two opposing protrusions 12 designed such that the outer circumference of the actuating part 6 increases radially along the circumference in the contact zone s between the brake lining 2 and the actuating part 6 . It is particularly e...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/18F16D51/12
CPCF16D2125/48F16D2125/30F16D2121/14F16D51/10F16D2125/24F16D2125/66F16D2125/42
Inventor 奥拉夫·德鲁斯
Owner SAF HOLLAND GMBH
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