Disc Brake Pad Spring Structure for Gap-Free Torque Contact
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Solution Overview
Problem
Existing disc brake systems face challenges in stably attaching pad springs to attachment positions, leading to potential gaps and brake noise due to elastic deformation and incomplete contact between components.
Innovation Solution
The disc brake incorporates a pad spring with a guide part that contacts the inner and bottom surfaces of a pad guide and an extension part that presses against a torque receiving part, utilizing a pressing operation part to ensure stable attachment by preventing gaps and enhancing contact reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pad spring is attached to the attachment member, then the friction pad can be supported elastically, but the attachment may be unstable due to gaps between components
Solution Approach 1:
The pad spring is divided into functionally distinct segments: a guide part for insertion and alignment, an extension part for pressing contact, and a pressing operation part for assembly manipulation. This segmentation allows each part to perform its specific function optimally, ensuring stable attachment while maintaining ease of assembly.
Solution Approach 2:
The extension part acts as an intermediary element between the guide part and the torque receiving part. It transmits the pressing force from the pressing operation part to the torque receiving part, ensuring complete contact and eliminating gaps while maintaining the elastic support function.
2Ease of operation
If the pad spring structure is simplified for easy assembly, then workability improves, but attachment stability may deteriorate
Solution Approach 1:
The guide part is designed with a shape that preliminarily aligns the pad spring with the pad guide during insertion. This preliminary alignment action ensures that the pressing operation part can then effectively press the extension part against the torque receiving part, achieving stable attachment through a simple two-stage assembly process.
Solution Approach 2:
The pad spring incorporates an elastic component that can dynamically deform during assembly and operation. The pressing operation part presses the extension part, causing elastic deformation that enables the pad spring to adapt to manufacturing tolerances and maintain stable contact, while still allowing for easy assembly through the reversible pressing action.
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 design allows for stable and reliable attachment of the pad spring, reducing brake noise and improving workability during assembly, while also reducing processing costs by eliminating the need for specific surface modifications on the torque receiving part.
Implementation Method 1
a pad spring (41) which is attached to the attachment member (3) and elastically supports the friction pads (4)
Data Source
AI summary
A pad spring has a guide part which is attached to come into contact with an inner side surface and a bottom surface on an outer side in a disc radial direction of a pad guide, and guides the friction pad in a disc axial direction, and an extension part which extends from the guide part in a direction away from the friction pad and comes into contact with a side surface of a torque receiving part of the attachment member by a projecting piece part on a distal end side to press the side surface of a torque receiving part. The extension part is provided with a pressing operation part which is pressed to move the projecting piece part in a direction away from the side surface of the torque receiving part.