一种轮端制动器
By using a clearance fit design between the left and right push discs and a thrust needle roller bearing, the structure of the disc brake is simplified, the problem of adding parts to the anti-rotation mechanism is solved, and automatic leveling and improved braking performance stability are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-12-18
- Publication Date
- 2026-07-17
AI Technical Summary
The anti-rotation mechanism of existing disc brakes usually requires additional parts, resulting in high costs and poor manufacturability, making it difficult to achieve theoretical leveling.
It adopts a clearance fit design between the left and right push plates, combined with thrust needle roller bearings, simplifies the structure, and achieves automatic leveling through elastic elements, replacing the traditional anti-rotation mechanism.
The simplified structure reduces manufacturing costs, improves machining accuracy and assembly efficiency, ensures the reliability of automatic brake clearance adjustment, avoids uneven wear, and enhances the stability and service life of braking performance.
Smart Images
Figure CN224515755U_ABST
Abstract
Claims
1. A wheel end brake comprising a caliper body, a drive unit, a transmission unit, a resilient member and an actuation unit, the transmission unit comprising a thrust bearing assembly and a rotation-out mechanism, characterized in that, A fixed plate is fixedly mounted on the clamp body, and two guide sleeves are installed on the fixed plate. A rotating mechanism is slidably fitted inside the guide sleeve. A left push plate and a right push plate are fixedly connected to the two sets of rotating mechanisms respectively. The left push plate and the right push plate are in clearance fit. The rotating part of the rotating mechanism is coaxially fixedly connected to the driven plate of the thrust bearing assembly. An elastic element and a rotating assembly are provided between the guide sleeve and the driven plate. The drive unit can drive the two sets of rotating mechanisms to operate simultaneously.
2. The wheel end brake of claim 1, wherein, The rotating assembly is located between the elastic element and the driven disk, and the other end of the elastic element is fixedly connected to the guide sleeve.
3. The wheel end brake of claim 2, wherein, The rotating assembly includes a thrust needle roller bearing and shims on both sides of the thrust needle roller bearing. When the drive unit drives the driven disc to rotate around the axis, it can drive the inner ring of the thrust needle roller bearing to rotate.
4. The wheel end brake of claim 1, wherein, The gap fit is a snap-fit connection.
5. The wheel end brake of claim 1, wherein, A groove is formed on the left push plate, and a protrusion is formed on the right push plate that mates with the groove, the protrusion being embedded in the groove.
6. The wheel end brake of claim 1, wherein, The unscrewing mechanism includes an unscrewing screw and an unscrewing nut. The unscrewing nut is threadedly connected to the unscrewing screw and can slide along the inner wall of the guide sleeve. A driven disc is connected to the end of the unscrewing screw, and an installation shaft is formed at the front end of the unscrewing nut. The left push disc and / or the right push disc are fixedly connected to the installation shaft.
7. The wheel end brake of claim 1, wherein, The unscrewing mechanism includes a rotating sleeve and a central screw. The inner wall of the rotating sleeve is provided with an internal thread, and the central screw is connected to the internal thread of the rotating sleeve. The rotating sleeve can slide along the inner wall of the guide sleeve. The front end of the central screw forms an installation shaft, and the left push plate and / or right push plate are fixedly connected to the installation shaft.
8. The wheel end brake of claim 6 or 7, wherein, The fixed connection method is riveting, interference fit, or threaded locking.
9. The wheel end brake of claim 8, wherein, The left and right push plates have positioning mounting holes to accommodate the installation of the mounting shaft.
10. The wheel end brake of claim 1, wherein, The elastic element is a disc spring, a coil spring, or elastic rubber.