Easily produced and assembled disc type brake caliper assembly and assembling method

Abstract

The invention relates to an easily produced and assembled disc type brake caliper assembly and an assembling method. The easily produced and assembled disc type brake caliper assembly comprises an axle pin, a bracket and an axle pin dust cover for sealing connection of the axle pin and the bracket. The axle pin comprises a pin body, a neck part and an end part integrally formed. The bracket is provided with a bracket pin hole, the pin body is inserted into the bracket pin hole and is in clearance fit to the bracket pin hole, a dust cover groove of the bracket pin is formed in the periphery ofthe mouth of the bracket pin hole, a dust cover groove of the axle pin is arranged between the neck part and the end part of the axle pin, two ends of the dust cover of the axle pin are hermetically clamped to the dust cover groove of the bracket pin and the dust cover groove of the axle pin, and an exhaust groove of the axle pin is formed in the neck part of the axle pin. When the axle pin, the dust cover of axle pin and the bracket are assembled, gas in the dust cover of the axle pin is discharged from an air storage cavity through the exhausting groove of the axle pin, so that the problem of exhausting in a brake caliper assembling process in the current market is solved, and the production efficiency is improved and the personnel cost is lowered greatly.

Description

technical field [0001] The invention relates to the technical field of disc brake assemblies for automobiles, in particular to a disc brake caliper assembly and an assembly method that are easy to produce and assemble. Background technique [0002] In the hydraulic disc brake caliper assembly, the shaft pin plays a vital role. Its function is to connect the bracket assembly and the caliper body assembly together, support the caliper body assembly and float back and forth smoothly on the bracket, and the shaft pin is in the During the life cycle of the brake caliper assembly, there should be no problems such as rust, bending, and breakage. After the shaft pin is assembled, the gas in the pin hole of the bracket should be completely discharged, otherwise the gas stored in the pin hole of the bracket will prevent the shaft pin from moving on the bracket. The internal displacement of the pin hole causes the outer friction plate to always contact the brake disc, causing problems ...

AI Technical Summary

Problems solved by technology

[0006] Disadvantages of this structure: This structural design is prone to abnormal noise caused by knocking between the shaft pin and the bracket pin hole during the driving configuration of the vehicle

[0009] Disadvantages of this structure: when inserting two shaft pins into the pin holes of the bracket during the assembly process, the gas in the pin holes of the bracket is easily discharged through the spiral exhaust groove 10, but it cannot be discharged outside the pin dust cover, and the air is still in the pin hole of the shaft pin. In the dust cover 3, in the initial state, the air in the shaft pin hole is compressed and subjected to air resistance, and the caliper body moves outwards, causing the outer plate to contact the brake disc, causing the outer eccentric wear and the drag torque to be too large, so that the brake caliper always This design has higher requirements for the shaft pin dust cover than the first type and the third type structure shaft pin dust cover.

[0012] Disadvantages of this structure: This structure design is basically similar to the second type. During the assembly process, when two shaft pins are inserted into the bracket pin holes, the gas in the bracket pin holes is easily discharged through the straight groove exhaust groove 7, but the pin cannot be discharged. Outside the dust cover, the air is still inside the shaft pin dust cover. In the initial state, the air in the shaft pin hole is compressed and subjected to air resistance, and the caliper body moves outward, causing the outer plate to contact the brake disc, resulting in eccentric wear and drag on the outside. If the hysteresis torque is too large, the performance of the brake caliper assembly is reduced, and the design has higher requirements for the shaft pin dust cover than the first type structure shaft pin dust cover

In addition, when the structure is assembled, with the deepening of the shaft pin, the shaft pin dust cover will be sealed after contacting the shaft pin neck, and the air in the shaft pin dust cover cannot be driven out, and the assembly is difficult to discharge the air.

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