Disk Brake Caliper Air Path Structure for Residual Drag Torque
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Solution Overview
Problem
Existing disk brake systems experience residual drag torque due to incomplete pad return after braking, leading to increased wear, fuel consumption, and noise, which is complicated to address with additional components like springs.
Innovation Solution
A disk brake caliper with a concave portion on the surface in contact with the pad to form an air path, allowing air flow and generating negative pressure to facilitate pad separation from the brake disc, reducing drag torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring is installed to apply restoring force to the brake pad, then the residual drag torque is prevented, but the number of components increases and the structure becomes complicated
Solution Approach 1:
The invention extracts the air cushion function from the traditional spring mechanism. By creating an air path between the brake pad and caliper housing, the air cushion effect is isolated and utilized independently, eliminating the need for mechanical springs while maintaining the drag prevention function
Solution Approach 2:
The invention applies pneumatic principles by introducing an air path that allows air to flow and create a cushion between the brake pad and caliper housing. This pneumatic cushion replaces the mechanical spring system, using gas pressure rather than mechanical elasticity to achieve the same drag prevention effect
2Power
If the brake pad is moved toward the brake disc by a piston, then braking is achieved, but incomplete return of the brake pad causes frictional resistance and wear
Solution Approach 1:
The invention applies preliminary anti-action by creating an air cushion before the brake pad fully contacts the caliper housing during retraction. This pre-established air barrier prevents friction and wear before they can occur, counteracting the incomplete return issue proactively rather than reactively
Solution Approach 2:
The invention introduces air as an intermediary substance between the brake pad and caliper housing. This air cushion acts as a mediator that prevents direct contact and friction during pad retraction, reducing wear while maintaining the necessary braking contact during operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The air path in the concave portion effectively prevents residual drag torque, minimizing pad wear, fuel consumption, and noise by ensuring complete pad return after braking.
Implementation Method 1
a concave portion recessed inward to form a path through which air flows is formed in a surface of the finger portion in contact with an outer pad assembly
Implementation Method 2
allowing air flow and generating negative pressure to facilitate pad separation from the brake disc
Data Source
AI summary
A brake caliper housing in accordance with one aspect of the present disclosure includes a main body having a cylinder in which a piston is accommodated, a bridge extending from the main body in a lateral direction, and a finger portion extending downward from an end portion of the bridge, wherein a concave portion recessed inward to form a path through which air flows may be formed in a surface of the finger portion in contact with an outer pad assembly.