Brake Caliper Cam Push Structure for Integrated Hand-Brake Actuation
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Solution Overview
Problem
Conventional brake calipers lack a novel structure that efficiently inhibits brake disk rotation using a combination of pistons and push members to contact the disk's end surfaces, and they do not easily integrate with a simple assembly process.
Innovation Solution
A brake caliper design featuring interconnected side seats with oil chambers, movable pistons, and push members driven by a central axis rod with an inclined urging surface, allowing for frictional contact with the brake disk's end surfaces when actuated by a brake pedal or hand lever, enabling effective rotation inhibition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional brake caliper structure is used, then the brake disk rotation can be inhibited, but the structure lacks novelty and integration efficiency
Solution Approach 1:
The patent combines the piston unit, lining unit, and hand-brake unit into a single integrated caliper body structure. The first and second side seats are interconnected to form a unified structure that houses all braking components, eliminating the need for separate assemblies and simplifying the manufacturing process.
Solution Approach 2:
The driving member serves multiple functions: it acts as both a pivot axis for the swing arms and a structural support element for the hand-brake cable unit. The caliper body simultaneously provides structural support, houses the operating space, and serves as the mounting structure for all braking components.
2Ease of operation
If push members with inclined abutment surfaces are used, then rotational movement converts to linear movement for effective braking, but the device complexity increases
Solution Approach 1:
The inclined abutment surfaces on the push members convert the rotational movement of the driving member into linear movement of the push members. This inclined surface geometry acts as a mechanical transformation mechanism, similar in function to a cam profile, that efficiently translates rotational input into the linear force needed for brake actuation.
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 design allows for easy assembly and effective inhibition of brake disk rotation using either the brake pedal or hand lever, with a simple structure that ensures reliable contact and release mechanisms, enhancing operational efficiency.
Implementation Method 1
an inclined abutment surface that is oblique to the central axis and that is for being in slidable contact with the urging surface of the driving member
Implementation Method 2
push the first and second linings to respectively and frictionally contact the first and second end surfaces of the brake disk for inhibiting rotation of the brake disk
Data Source
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AI summary
A brake caliper (100) includes a lining unit (30) and a hand-brake unit (40). The hand-brake unit (40) includes a driving member (41), and first and second push members (42, 43) respectively abutting against an abutment portion (413) and an urging portion (414) of the driving member (41). The urging portion (414) has an inclined urging surface (416) . The second push member (43) has an inclined abutment surface (432) in slidable contact with the urging surface (416). When the driving member (41) is rotated, the urging surface (416) pushes the abutment surface (432) to move the first and second push members (42, 43) toward each other for actuating the lining unit (30) to frictionally contact a brake disk (200).