Handle Device Cable Holding Guide Pieces Elastic Deformation
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Solution Overview
Problem
Existing handle devices for vehicle doors face issues with holding outer cables due to variations in diameter and material properties, leading to poor insertion and retention, especially under tension and vibrations.
Innovation Solution
A handle device with a cable holding portion featuring guide pieces that elastically deform to securely fit a circumferentially reduced groove on the outer cable, including a fixing portion that engages perpendicularly and a flexural deformation portion to widen the guide piece width, ensuring stable retention without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the dimension of the outer cable is large or the material is rigid, then the cable strength is improved, but excessive force is required for inserting the outer cable into the fitting portion, degrading the insertion property
Solution Approach 1:
The guide pieces are designed to elastically deform during the insertion process. When the outer cable is inserted, the guide pieces dynamically adjust their width to accommodate the cable, allowing easy insertion of rigid cables while maintaining secure holding after insertion
Solution Approach 2:
The guide pieces change their dimensional parameters (width) based on the insertion state. During insertion, they expand to allow cable passage; after insertion, they return to their original dimension to securely hold the cable, thus adapting to different cable dimensions and rigidity
2Ease of operation
If the dimension of the outer cable is small or the material is soft, then the insertion ease is improved, but the holding force of the fitting portion becomes too small, causing the outer cable to fall off due to tension and vibrations
Solution Approach 1:
The guide pieces dynamically change their state from an expanded insertion mode to a contracted holding mode. This dynamic transition ensures that soft, small-diameter cables are easily inserted while subsequently being securely retained by the guide pieces' elastic recovery, preventing cable drop-off under tension and vibration
Solution Approach 2:
The guide pieces automatically adjust their holding force based on the cable's presence. When the cable is inserted, the guide pieces elastically deform to accommodate it; when the cable is pulled, the guide pieces' elastic recovery provides increased holding force, making the system self-adjusting without external intervention
3Ease of manufacture
If a fixed fitting structure is used to hold the outer cable, then the manufacturing simplicity is maintained, but the adaptability to different cable dimensions and materials is poor
Solution Approach 1:
The guide pieces are designed with elastic deformation capability, allowing their dimensional parameters to change in response to different cable sizes and materials. This enables a single fitting structure to adapt to various cable specifications without requiring multiple different fittings, thus maintaining manufacturing simplicity while improving adaptability
Solution Approach 2:
The guide pieces are made of elastic material that combines the properties of structural support with deformability. This composite characteristic allows the fitting portion to maintain its shape for manufacturing simplicity while simultaneously adapting to different cable dimensions and materials through elastic deformation
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 excellent adaptability and secure holding of outer cables, preventing fall-off due to tension or vibrations, while maintaining ease of assembly and operation, thus enhancing the handle device's performance across various cable dimensions and materials.
Implementation Method 1
the fixing portion is elastically deformed to a direction perpendicular to a plane where the first guide piece extends. When the circumferential groove portion passes the first guide piece, the fixing portion is elastically returned to the direction perpendicular to the plane to be engaged with the outer circumferential surface of the outer cable.
Implementation Method 2
a second guide piece which is the other guide piece of the pair of guide pieces preferably includes a flexural deformation portion which is flexibly deformed in a planar direction when the circumferential groove portion moves along the insertion groove to widen a width between the pair of guide pieces
Data Source
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AI summary
A handle device operating an inner cable inserted in an outer cable is provided, the device including a handle base for fixing an operation handle to which the inner cable is connected, and a cable holding portion provided in the handle base to hold the outer cable and fitted to a circumferential groove portion reduced in diameter in a radial direction in an outer circumferential surface of the outer cable, wherein the cable holding portion includes a fitting portion for holding the outer cable by fitting with the circumferential groove portion, and a pair of guide pieces provided to face each other to fit into the circumferential groove portion from both sides, forming an insertion groove for guiding the circumferential groove portion into the fitting portion.