Hydraulic brake sub-pump with brake clearance automatic compensating device
A technology of hydraulic braking and automatic compensation, applied in slack adjusters and other directions, can solve the problems of increased production cost, troublesome disassembly and assembly, complex structure, etc., and achieve the effect of driving safety guarantee, braking performance guarantee, and easy assembly.
Inactive Publication Date: 2005-10-05
LIAONING SG AUTOMOTIVE GRP CO LTD
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Problems solved by technology
Manual adjustment is very inconvenient, and at the same time, the increased brake clearance due to friction plate wear cannot always be adjusted in time, so the braking effect of the car cannot be guaranteed
A small number of hydraulic brake cylinders have automatic clearance compensation devices, but the structure is complex, which increases production costs
In addition, due to the troublesome disassembly and assembly, it is difficult to maintain and repair.
Method used
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Embodiment Construction
[0012] The present invention will be described in further detail below with reference to the accompanying drawings.
[0013] Referring to Fig. 1 and Fig. 3, 9 is the pump body of the hydraulic brake wheel cylinder, and the pump body is fixed on the brake floor of the automobile through a bolt assembly. An oil inlet 16 and an oil outlet 17 are provided on the pump body. Pistons are installed at both ends of the pump body. As can be seen from the figure, the left end is a supporting piston 1, and the right end is equipped with an adjusting piston 14. A Y-shaped sealing ring 8 is installed between the supporting piston and the adjusting piston and the pump body 9, and the outer surface of the supporting piston The end is connected with the lower brake shoe 19, and the outer end of the adjustment piston is connected with the upper brake shoe 18.
[0014] An automatic brake gap compensation device is installed in the pump body 9, and its structure is shown in Figure 3. The inner e...
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The invention discloses a hydraulic brake sub-pump with auto compensation during brake interspaces. It comprises the pump body set with a oil entrance and an oil exit, adjusting piston installed inside the pump, brake shoe linked at the out end of the adjusting piston. Its features are that the inner end of the adjusting piston is linked to one end of adjusting bolt by screw, the other end of the bolt is installed with reflexive thimble jogging on the inner surface of the pump, there is screw track on adjusting bolt and adjusting ring on the track, the ring links with the track by screw, there is a axial-wise clearance set between the teeth of the ring and the track, a pressing spring is installed beside the ring. When brake clearance is larger than the preset value, the invention automatically adjusts as soon as the brake is released. In this way the brake clearance will be maintained always at a preset value ensuring the brake performance and the driving safety. Moreover the invention is of simple structure, handily assembling and low cost.
Description
technical field [0001] The invention relates to a hydraulic brake cylinder for a drum brake, in particular to a hydraulic brake cylinder for a drum brake with a brake gap automatic compensation device. Background technique [0002] At present, most of the domestic hydraulic brake cylinders do not have the automatic compensation function of the brake clearance, but manually adjust the brake clearance increased due to the wear of the friction plate. Manual adjustment is very inconvenient, and at the same time, the increased brake gap due to friction plate wear cannot always be adjusted in time, so the braking effect of the car cannot be guaranteed. A small number of hydraulic brake cylinders have automatic clearance compensation devices, but the structure is complex, which increases the production cost. In addition, due to the trouble of disassembly and assembly, it is difficult to maintain and repair. Contents of the invention [0003] The object of the present invention ...
Claims
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Inventor 王爱国曹勇于春生邢凯恩李明利李祥海
Owner LIAONING SG AUTOMOTIVE GRP CO LTD