Brake Operation Unit Layout for Reduced Radial Packaging
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Solution Overview
Problem
The existing brake operation units have a large size in the radial direction of the central axis of the master cylinder, which poses a challenge for further reduction without compromising functionality.
Innovation Solution
A brake operation unit configuration is introduced, where the electric discharging unit and reaction force applying mechanism are positioned compactly around the master cylinder, with the motor's second central axis separated and intersecting the direction parallel to the master cylinder's first central axis, allowing for a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electric discharging unit and reaction force applying mechanism are disposed around the master cylinder in a conventional manner, then the brake operation unit can maintain its functional integrity, but the size increases in the radial direction of the master cylinder's central axis
Solution Approach 1:
The motor's central axis (second central axis) is positioned to intersect with the master cylinder's central axis (first central axis) rather than being parallel or concentric. This dimensional reconfiguration allows the electric discharging unit and reaction force applying mechanism to be arranged in a more compact, space-efficient manner around the master cylinder, reducing the radial size of the brake operation unit while maintaining all necessary functional components
Solution Approach 2:
The electric discharging unit (motor) and the reaction force applying mechanism are integrated into a unified configuration where the motor's axis intersects the master cylinder's axis. This merging of functional elements into a coordinated spatial arrangement reduces the overall radial footprint compared to separate, conventional placements
Data Source
AI summary
A brake operation unit includes, for example, a master cylinder that movably houses a piston moving in connection with an operation member; an electric discharging unit including a motor and a discharging mechanism that is caused to discharge a working fluid by operation of the motor; and a reaction force applying mechanism that applies a reaction force to the operation member. A second central axis of the motor is separated from a first central axis of the master cylinder, and intersects a direction parallel to the first central axis. When viewed in a direction parallel to the second central axis, the first central axis is located between the second central axis and the reaction force applying mechanism.