Bicycle Brake Disk Spider With Elastic Damping for Quiet Floating Mount
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Solution Overview
Problem
Existing bicycle brake disk systems suffer from noise issues due to axial movement and thermal expansion, leading to rattling and clicking sounds, and require joint exchange of the adapter and brake disk when worn, increasing maintenance costs and effort.
Innovation Solution
A wheel component with a brake disk device featuring a disk holder configured as a 'spider' with elastic damping components, allowing float-mounted and noise-reduced operation, and a detachable connection using screws instead of rivets, enabling easy brake disk exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the brake disk is rigidly fixed to the disk holder, then structural stability is improved, but noise is generated due to thermal expansion and axial movement
Solution Approach 1:
The brake disk is designed to float-mounted on the disk holder, allowing dynamic axial movement instead of rigid fixation. This enables the brake disk to adapt to thermal expansion and wear automatically, eliminating the noise caused by rigid constraints while maintaining operational stability through the floating connection mechanism
Solution Approach 2:
The elastic damping component changes the physical state of the connection between brake disk and disk holder from rigid to compliant. The elastic material absorbs thermal expansion forces and dampens vibrations, transforming the connection parameters to allow controlled movement while reducing noise generation
2Strength
If the brake disk is riveted to the adapter, then connection strength is improved, but maintenance cost and effort increase due to joint exchange requirement
Solution Approach 1:
The connection system is segmented into separate components: the disk holder with integrated fastening units and the brake disk with corresponding recesses. This segmentation allows the brake disk to be independently removed and replaced without affecting the disk holder, reducing maintenance effort and cost while maintaining strong connection through the fastening units
Solution Approach 2:
The connection transitions from a permanent riveted joint to a reversible fastened connection. The fastening units with threaded bolts allow the brake disk to be securely attached during use but easily removed when worn, providing both strong connection strength and ease of maintenance through the dynamic nature of the fastening system
3Reliability
If the fixing ring is securely attached with high rotational force, then reliability is improved, but the risk of automatic detachment during use increases if not properly secured
Solution Approach 1:
The securing unit is pre-configured with a securing element that automatically engages with the fixing ring's engagement feature. This preliminary arrangement ensures that once the fixing ring is installed, the securing unit automatically locks it in place, preventing accidental loosening or detachment without requiring additional securing actions
Solution Approach 2:
The securing unit provides mechanical feedback through the engagement of the securing element with the fixing ring. The engagement feature creates a positive lock that prevents rotation in the loosening direction, providing continuous feedback that the fixing ring is securely attached and cannot accidentally detach during use
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 solution provides quiet operation by dampening noise and allowing heat-related expansion without noise, and facilitates cost-effective and resource-efficient maintenance by allowing the brake disk to be exchanged independently of the disk holder.
Implementation Method 1
at least one elastic damping component contacting the brake disk is received between the basic body of the disk holder and the fastening unit
Implementation Method 2
at least one elastic damping component contacting the brake disk is received between the basic body of the disk holder and the fastening unit, to accommodate the brake disk on the disk holder float-mounted and noise-reducing
Implementation Method 3
The structure according to DE 10 2014 011 353 A1 has a coil spring inserted between the hub shell and the adapter, so that the adapter, to which the brake disk is fixed, can axially move counter to the spring force of the coil spring for aligning
Data Source
AI summary
A wheel component for bicycles with a brake disk device with a disk holder (spider) and a brake disk provided to be attached to the disk holder. The brake disk opens up a disk plane. The disk holder includes a basic body having a central cross sectional plane, which extends in parallel to the disk plane. The basic body is configured with a plurality of bolts, which protrude in the axial direction and pass through the disk plane, to non-rotatably receive the brake disk on the disk holder. Fastening units are provided to secure the brake disk on the disk holder. Between the basic body of the disk holder and the fastening unit, an elastic damping component contacting the brake disk is received, to accommodate the brake disk on the disk holder float-mounted and noise-reducing.