Bicycle Bracket Fixing Structure Tool-Free Attachment
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Solution Overview
Problem
Conventional methods for fixing bicycle components to cylindrical portions require tools, making the operation less workable and requiring additional steps for attachment and detachment.
Innovation Solution
A bicycle component fixing structure comprising a bracket with connecting and fixing portions that utilize a pressing force, such as from tape, to securely attach the component to the cylindrical portion without needing tools, allowing for easy and detachable attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fastening member such as a bolt is used to fix the bicycle component, then the fixing strength is improved, but the ease of operation deteriorates because a tool is required for installation and removal
Solution Approach 1:
The bracket is divided into a connecting portion (that interfaces with the bicycle component) and a fixing portion (that interfaces with the cylindrical portion). This segmentation allows the fixing portion to use a simple pressing mechanism while the connecting portion provides secure attachment, resolving the contradiction between easy operation and fixing strength
Solution Approach 2:
The bracket acts as an intermediary component between the bicycle component and the cylindrical portion. It transfers the pressing force from the tape to securely hold the component, achieving both easy installation (no tools needed) and reliable fixing through the mechanical advantage of the bracket structure
2Reliability
If a tool is required to fix the bicycle component, then the reliability of the fixing is improved, but the productivity deteriorates due to additional steps and time required
Solution Approach 1:
The fixing mechanism is designed to be self-servicing through the pressing force applied by the tape. The bracket structure itself provides the fixing action without requiring external tools or complex operations, improving both productivity (faster installation) and reliability (consistent pressing force distribution)
Solution Approach 2:
The connecting portion and fixing portion are merged into a single integrated bracket structure. This combination allows the component to be fixed reliably through the unified action of the bracket, eliminating the need for separate fastening operations and thereby improving productivity while maintaining reliability
3Ease of operation
If a pressing force is applied to fix the fixing portion, then the ease of operation is improved by enabling tool-free attachment, but the fixing strength may deteriorate without proper mechanical fastening
Solution Approach 1:
The fixing portion is designed with a curved inner surface that matches the outer peripheral surface of the cylindrical portion. This curvature allows the pressing force to be distributed evenly around the contact area, maintaining fixing strength while enabling easy tool-free installation through simple tape application
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
Improves the workability of fixing bicycle components by enabling tool-free attachment and detachment, enhancing usability and reliability with dual connecting and fixing locations for secure positioning.
Implementation Method 1
The at least one fixing portion is fixed to the outer peripheral surface of the cylindrical portion by a pressing force that acts on the at least one outer surface
Data Source
AI summary
A bicycle component fixing structure includes at least one bracket including at least one connecting portion and at least one fixing portion. The connecting portion is connected to the bicycle component. The fixing portion extends from the connecting portion and is fixed with respect to an outer peripheral surface of a cylindrical portion having an open end. The fixing portion includes at least one inner surface that opposes an outer peripheral surface of the cylindrical portion, and at least one outer surface that faces in the opposite direction from the inner surface. The fixing portion is fixed to the outer peripheral surface of the cylindrical portion by a pressing force that acts on the outer surface. The bracket fixes the bicycle component to the open end of the cylindrical portion, in a state in which the fixing portion is fixed to the outer peripheral surface of the cylindrical portion.