Combined brake block elastic clamp springs used for brake blocks in automobile brake calipers

Abstract

The invention discloses combined brake block elastic clamp springs used for brake blocks in automobile brake calipers. The combined brake block elastic clamp springs used for the brake blocks in the automobile brake calipers are mainly composed of upper-end clamp springs and lower-end clamp springs which are independent, wherein the upper-end clamp springs and the lower-end clamp springs are not directly connected; and the upper portions of the lower-end clamp springs are fixed onto the portions, below the upper-end clamp springs, of a support, the lower portions of the lower-end clamp springs are processed into S shapes, the lower-end clamp springs are divided into structures of inner layers and outer layers, the S-shaped tail ends of the lower-end clamp springs are elastically connected with side surfaces of the brake blocks in a pressed mode, the structures of the inner layers and the outer layers are different in thermal expansion coefficient, the thermal expansion coefficients of the inner layers close to the brake blocks are greater than those of the outer layers away from the brake blocks. According to the combined brake block elastic clamp springs used for the brake blocks in the automobile brake calipers, the problems of brake caliper dragging abrasion, disc and sheet abnormal abrasion, noise, oil consumption increase and the like caused by large dragging torque of the automobile brake calipers are solved, abnormal sound caused by looseness of the brake blocks is prevented, the problem of large return resistance of the brake blocks after brake is relieved is solved, the product brake performance is improved, and the product service lives are prolonged.

Description

technical field [0001] The invention relates to a brake block combined with a brake block elastic clamping spring used in an automobile brake caliper. The elastic circlip of the combined brake block is composed of two parts, the upper circlip and the lower circlip. The material of the upper circlip is austenitic stainless steel spring steel strip commonly used at present, and the material of the lower circlip is bimetallic heat-sensitive material. The invention is suitable for the inner and outer brake blocks of the automobile brake caliper and the retaining springs at both ends thereof, and is a kind of bending deformation of the retaining spring at the lower end of the brake block can be reduced under the action of temperature rise after the automobile brake is released. The tension of the circlip reduces the sliding resistance of the brake block to help it return to its position in time and completely, and reduces the drag torque of the brake caliper to prevent dragging, ab...

AI Technical Summary

Problems solved by technology

[0002] Existing brake block elastic circlips are all up and down integral structural designs (such as Figure 7 ), the material used is stainless steel belt, and the normal working temperature of the brake caliper basically does not affect its material expansion coefficient, so the tension of the circlip is also basically unchanged. The determination of the tension value of the circlip is one of the key parameters for the design of the circlip. If the tension is too high, the sliding resistance of the brake pads is correspondingly large. The sliding resistance of the brake pads is one of the key factors affecting the drag torque of the brake caliper, which affects the separation of the disc and the disc, resulting in residual pressure between the disc and the disc, which seriously affects the drag torque. , lead to problems such as dragging, abnormal wear, noise, high fuel consumption, etc. If the tension is too small, it will cause abnormal noise due to loose brake pads when the car is running, especially on bumpy roads. It is the object of the present invention to avoid the problem of brake block loosening and abnormal sound when the car is running.

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