Electronic Brake Apparatus Piston Miniaturization
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Solution Overview
Problem
Conventional electronic brake apparatuses have limited design flexibility and enhanced vehicle performance due to the coaxial arrangement of screw nuts, bolt screws, and elastic members, which restricts the miniaturization of pistons and interferes with other vehicle parts in limited spaces.
Innovation Solution
The electronic brake apparatus incorporates a spring pack mounted on a first piston with a bolt screw in point contact, a fixing member, and a second piston screwed to the bolt screw, allowing for a reduced piston diameter by eliminating the need for a screw nut and screw tab, enabling miniaturization and improved design freedom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw nuts, bolt screws, and elastic members are arranged coaxially with the piston, then the brake structure is simple and reliable, but the piston diameter increases and design freedom is limited
Solution Approach 1:
The patent transitions from a coaxial arrangement (one-dimensional alignment along the piston axis) to a radial arrangement where the screw nut and elastic member are positioned perpendicular to the piston axis. This dimensional change allows components to be distributed in the radial direction rather than occupying axial space, thereby reducing piston diameter while maintaining structural integrity and reliability.
Solution Approach 2:
The patent divides the brake assembly into separate functional modules: the piston, the screw nut, and the elastic member are positioned as distinct components rather than being integrated coaxially. The screw nut is radially offset from the piston center, and the elastic member is positioned between the screw nut and shoe, creating a segmented layout that reduces the required piston diameter while maintaining functional reliability.
2Device complexity
If screw nuts, bolt screws, and elastic members are arranged coaxially with the piston, then the brake structure is simple, but the degree of freedom of design is low in size, shape, and layout
Solution Approach 1:
By positioning the screw nut radially offset from the piston axis rather than coaxially, the patent creates additional spatial freedom in the brake assembly. This radial arrangement allows for greater flexibility in shaping the piston and positioning other components, enabling improved size, shape, and layout design freedom while maintaining relatively simple structural relationships.
3Stability of the object's composition
If the piston diameter is increased to accommodate coaxial components, then the brake structure is stable, but vehicle performance enhancement is limited due to interference with other vehicle parts
Solution Approach 1:
The patent resolves the conflict between structural stability and adaptability by redistributing components in the radial dimension rather than increasing piston diameter in the axial dimension. The screw nut and elastic member are positioned radially offset from the piston center, allowing the piston to maintain a compact diameter that avoids interference with other vehicle parts while preserving stable structural relationships through the radial arrangement.
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
This configuration enhances brake performance by allowing for more flexible vehicle part arrangement in limited spaces and improves brake performance by reducing piston size and eliminating the need for additional components, thereby increasing design freedom and performance.
Implementation Method 1
a spring disposed between the ring plate and the spring hold and supported by the spring hold, the spring elastically pressing the ring plate toward the first piston
Implementation Method 2
a bolt screw rotated in conjunction with a motor and having one end in point contact with the spring pack
Implementation Method 3
both ends of a bolt screw rotated in conjunction with a motor are screwed to the screw nuts. When an elastic member is installed between each of the screw nuts and the associated one of the pistons to secure and maintain the contact with shoes
Data Source
AI summary
Disclosed herein is an electronic brake apparatus that includes a spring pack, a first piston in which the spring pack is mounted, a bolt screw rotated in conjunction with a motor and having one end in point contact with the spring pack, a fixing member configured to bind the bolt screw to the first piston, and a second piston screwed to the other end of the bolt screw.