Disc brake having an electrically driven adjusting device
First Claim
Patent Images
1. A disc brake having a brake disc, comprising:
- a caliper straddling the brake disc;
a brake application device arranged in the caliper for applying a braking force;
adjusting devices having electric motor drives for compensating brake pad wear by adjusting a release play, one adjusting device being arranged on each side of the brake disc, wherein the adjusting devices are connected with the brake pads for transmitting pull-back forces;
a coupling device mutually coupling the brake pads such that, while being movable toward one another to compensate for wear, a moving apart from one another only occurs by way of a predefined path;
wherein the coupling device comprises;
a brake pad holding clamp extended beyond the brake disc and brake pads at a right angle with respect to friction surfaces of the brake disc, the brake pad holding clamp being supported at each end on the caliper;
wherein the brake pad holding clamp presses the two brake pads by way of a brake pad holding spring arranged on the brake pads against supporting surfaces in a brake pad guide of the caliper; and
wherein on a surface facing the brake pads, the brake pad holding clamp has a profiled section in areas in which corresponding brake pad holding springs are supported against the brake pad holding clamp via projections of the brake pad holding springs which engage in the profiling under a pretensioning force of the brake pad holding springs.
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Accused Products
Abstract
A disc brake is provided, especially for utility vehicles, that comprises a caliper that overlaps a brake disc, a brake application device disposed in the caliper that applies the brake and at least one adjustment device comprising an electrical drive. The disc brake is further provided with a mechanical device that blocks the adjustment device driven by an electromotor against an augmentation of the release play that exceeds a threshold value caused by the electromotor drive.
11 Citations
27 Claims
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1. A disc brake having a brake disc, comprising:
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a caliper straddling the brake disc; a brake application device arranged in the caliper for applying a braking force; adjusting devices having electric motor drives for compensating brake pad wear by adjusting a release play, one adjusting device being arranged on each side of the brake disc, wherein the adjusting devices are connected with the brake pads for transmitting pull-back forces; a coupling device mutually coupling the brake pads such that, while being movable toward one another to compensate for wear, a moving apart from one another only occurs by way of a predefined path; wherein the coupling device comprises; a brake pad holding clamp extended beyond the brake disc and brake pads at a right angle with respect to friction surfaces of the brake disc, the brake pad holding clamp being supported at each end on the caliper; wherein the brake pad holding clamp presses the two brake pads by way of a brake pad holding spring arranged on the brake pads against supporting surfaces in a brake pad guide of the caliper; and wherein on a surface facing the brake pads, the brake pad holding clamp has a profiled section in areas in which corresponding brake pad holding springs are supported against the brake pad holding clamp via projections of the brake pad holding springs which engage in the profiling under a pretensioning force of the brake pad holding springs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A wear adjustment system for an electromechanical or pneumatic disc brake for commercial vehicles, the disc brake including a caliper that straddles a brake disc, and a wear adjusting rotary device arranged on each side of the brake disc to act by way of a pressure piece upon a respective brake pad, the wear adjustment system comprising:
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an electric motor drive for adjusting a release play of the brake disc to compensate for brake pad wear, the electric motor drive driving the wear adjusting rotary device; a mechanical stop operably configured to prevent an increase of the release play driven by the electric motor drive in excess of a defined limit value; wherein the mechanical stop comprises a coupling device for mutually coupling the brake pads on opposite sides of the brake disc to one another, the coupling device being operably configured such that the brake pads can move toward one another for wear adjustment but cannot be moved away from one another; wherein the coupling device includes a brake pad holding clamp extending beyond the brake pads and the brake disc at substantially a right angle with respect to friction surfaces of the brake disc, the brake pad holding clamp being supported at each end on the caliper and acting to press the brake pads against their supporting surfaces by way of brake pad holding springs respectively assigned to each brake pad; and wherein the brake pad holding clamp includes a profiling facing the brake pads in areas in which the brake pad holding springs are supported against the brake pad holding clamp via projections of the brake pad holding springs which engage in the profiling under a pretensioning force of the brake pad holding springs. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification