Indexed Collar Clamp Structure for Stable Telescoping Stands
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Solution Overview
Problem
Conventional bicycle repair stands often suffer from user experience issues due to instability and difficulty in securely attaching and positioning bicycles for maintenance and repair.
Innovation Solution
The implementation of a telescoping stand with an inner and outer tube, a compliance cut, a bushing with indexing protrusions, and an indexed collar clamp, which allows for adjustable height and secure clamping of bicycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional repair stands use simple clamping mechanisms, then device complexity is reduced, but stability and secure attachment of bicycles deteriorates
Solution Approach 1:
The collar clamp is positioned over the telescoping stem, which itself is nested within the repair stand structure. The bushing is nested between the collar clamp and the stem, creating a nested arrangement that provides secure attachment while maintaining structural integrity. This nested design allows multiple components to work together to achieve reliable clamping without excessive complexity.
Solution Approach 2:
The bushing acts as an intermediary component between the collar clamp and the telescoping stem. It provides a friction fit that secures the clamp to the stem while allowing for easy assembly and disassembly. This intermediary element enhances the reliability of the connection without requiring complex fastening mechanisms.
2Reliability
If telescoping stand uses indexed collar clamp with bushing and compliance cut, then stability and secure positioning is improved, but device complexity increases
Solution Approach 1:
The compliance cut is pre-formed in the telescoping stem at the location where the collar clamp will engage. This preliminary structural feature ensures that the clamp engages with a consistent and predetermined portion of the stem, providing reliable positioning without requiring additional adjustment mechanisms or complex alignment procedures.
Solution Approach 2:
The compliance cut creates a localized structural feature in the telescoping stem that specifically enhances engagement with the collar clamp. Rather than modifying the entire stem structure, the compliance cut is applied locally at the engagement point, providing enhanced positioning stability while minimizing overall structural complexity.
3Ease of operation
If repair stand allows easy rotation and positioning of bicycles, then ease of operation is improved, but stability may deteriorate
Solution Approach 1:
The repair stand employs a telescoping stem with segmented adjustment capabilities, allowing the height and position to be adjusted in discrete steps. The collar clamp can be positioned at different locations along the stem, enabling easy rotation and positioning of the bicycle while maintaining structural stability through the segmented, modular design.
Data Source
AI summary
Indexed collar clamps allow for fast and easy adjustment of an associated telescoping stand, while preventing various underlying components from becoming dislodged from their respective positions over time. A telescoping stand may include an inner tube and an outer tube partially overlapping the inner tube. An overlapping end of the outer tube includes a compliance cut. A bushing is positioned between the inner tube and the outer tube and adjacent the compliance cut. The bushing includes a protrusion that indexes the bushing to an aperture in the outer tube. An indexed collar clamp is positioned over the outer tube and also adjacent the compliance cut. The protrusion from the bushing further indexes the bushing to a slot in the indexed collar clamp.