Anti-rotating structure for electrical parking brake calipers

Abstract

The invention relates to the technical field of electrical parking brake calipers, and specifically relates to an anti-rotating structure for electrical parking brake calipers. The anti-rotating structure comprises a screw rod, a threaded sleeve and an anti-rotating screw, wherein driving internal threads are arranged on the inner wall of the threaded sleeve, driving external threads which are spirally matched with the driving internal threads are arranged on the screw rod, the anti-rotating screw is used for fixing the threaded sleeve and preventing the threaded sleeve from rotating, and an anti-rotating groove which is clamped and matched with the anti-rotating screw is formed in the end of the threaded sleeve. The anti-rotating structure has the advantages of the simple structure and convenience in installation; the threaded sleeve is fixed and is prevented from rotating by the anti-rotating screw, so that a large anti-rotating torque can be supplied, and additionally, the problem of fatigue looseness caused by repeated movement of parts can be solved; and the anti-rotating screw can be matched with a stop gap in a parking screw rod, so that the problem of mechanism failure caused by excessive movement of the anti-rotating parking screw rod is solved.

Description

technical field [0001] The invention relates to the technical field of electronic parking calipers, in particular to an anti-rotation structure for electronic parking calipers. Background technique [0002] With the continuous development of electronics and information technology, there are more and more electrical applications on cars. Many operations that were originally done by machinery and manpower are gradually replaced by electronics and automation technology. More and more vehicles are replaced by electronic parking. For traditional handbrakes, the electronic parking caliper is the core component of the electronic parking technology. The parking thrust of the electronic parking caliper is mainly realized by the helical thrust of the screw nut. When the screw nut is working, one part needs to move and the other part is fixed. The moving part provides the parking thrust, and the fixed part bears the reaction force. [0003] The existing technology is to fix the screw ...

AI Technical Summary

Problems solved by technology

[0003] The existing technology is to fix the screw sleeve by tightening the pre-tightening force of the external thread on the screw sleeve or fastening glue, so as to achieve the anti-rotation function, but the anti-rotation torque of this method is small, and it is difficult to use it on a large-tonnage truck. The use safety performance is poor, and the repeated rotation of the mechanism is easy to cause fatigue and loosening, which reduces the life of the entire electronic parking caliper

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