Elliptical Grip Inner Surface for Handlebar Installation
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Solution Overview
Problem
Existing grips for handlebars are difficult to install and may come off after installation due to frictional resistance and manufacturing tolerances.
Innovation Solution
A grip design featuring a tubular shaped member with an elliptical inner surface and a through hole extending along the minor axis, allowing for easy installation and secure fixation to the handlebar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a circular cross-section grip is used, then the structure is simple and manufacturing is easy, but installation is difficult and the grip may come off due to high frictional resistance
Solution Approach 1:
The grip cross-section is changed from a symmetric circular shape to an asymmetric elliptical shape. This asymmetry creates a specific geometric configuration where the minor axis dimension is smaller than the major axis dimension, allowing the grip to be inserted onto the handlebar by deforming the elliptical shape during installation, then springing back to maintain secure attachment. The asymmetric geometry resolves the contradiction by enabling easy installation while maintaining structural simplicity.
Solution Approach 2:
The elliptical cross-section grip utilizes elastic deformation dynamics during installation. The grip is designed to be elastically deformable, allowing it to dynamically change its shape from a compressed state during insertion to its original elliptical shape after installation. This dynamic behavior enables the grip to overcome frictional resistance during installation while maintaining secure attachment afterward, resolving the contradiction between ease of installation and manufacturing simplicity.
2Ease of operation
If multiple through holes are formed to reduce frictional resistance, then assembly ease is improved, but the grip structure becomes more complex and may compromise strength
Solution Approach 1:
Instead of adding multiple through holes to reduce friction, the invention extracts the friction reduction function by removing the circular cross-section geometry entirely and replacing it with an elliptical cross-section. This single geometric modification inherently reduces the contact area and frictional resistance during installation without requiring additional holes or complex structural features, thus resolving the contradiction between assembly ease and structure complexity.
3Ease of operation
If liquid adhesive is applied as lubricant, then assembly ease is improved, but the installation process becomes more complex and time-consuming
Solution Approach 1:
The elliptical cross-section grip performs the lubrication function itself through its geometric design. The elliptical shape creates inherent friction reduction during insertion without requiring external lubricants or adhesives. The grip's own structure serves the dual purpose of both the structural component and the lubrication mechanism, eliminating the need for additional liquid adhesive application steps and resolving the contradiction between assembly ease and process complexity.
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 elliptical shape provides a strong contact point while allowing for deformation during assembly, ensuring easy installation and maintaining the grip's attachment to the handlebar.
Implementation Method 1
in order to improve the ease in assembling the grip onto the handlebar, a large number of through holes are formed in the grip to thereby reduce frictional resistance
Implementation Method 2
a portion (a long diameter portion) that allows deformation at a time of assembly
Data Source
AI summary
A grip according to the present invention is equipped with a tubular shaped member inserted onto a handlebar, and a cover member that covers the tubular shaped member. An inner circumferential surface of the tubular shaped member has a shape of an ellipse, a through hole through which a fixing member for fixing the handlebar and the tubular shaped member is inserted is formed in the tubular shaped member, and the through hole extends in a direction of a minor axis of the ellipse.