Vehicle Handle Hinge Segmentation for Stable Rotation
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Solution Overview
Problem
The existing vehicle handle devices face challenges in moldability and workability due to the instability of the thin plate-shaped hinge portion, which can lead to distortion, cracking, or short shots during manufacturing, and unstable rotation trajectories, affecting the fixation of cables and operation efficiency.
Innovation Solution
A vehicle handle device with a hinge portion that includes a shaft body and a holding portion, integrated via connection pieces that break under rotational force, allowing the cap portion to rotate relative to the cable fixing base portion, ensuring stable moldability and workability during cable fixation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the hinge portion is increased, then the hinge portion becomes less prone to cracking, but the hinge portion may be distorted and cracked during rotation due to excessive thickness
Solution Approach 1:
The hinge portion is divided into a thin plate-shaped main body and a separate reinforcement piece that is inserted into a groove. This segmentation allows the thin plate to maintain its flexibility and rotation capability while the reinforcement piece provides the necessary strength and prevents cracking during rotation operations.
2Manufacturing precision
If the thickness of the hinge portion is set to be thin, then distortion is reduced, but a short shot may occur at the time of molding and a crack may occur
Solution Approach 1:
The hinge portion is segmented into a thin plate-shaped main body and a separate reinforcement piece. The thin plate maintains molding accuracy and prevents short shots, while the reinforcement piece inserted into the groove provides the necessary structural integrity to prevent cracking during use.
Solution Approach 2:
The hinge portion combines the thin plate structure with a reinforcement piece made of the same or similar material, creating a composite structure that leverages the advantages of both components: the thin plate's molding precision and the reinforcement's crack resistance.
3Ease of manufacture
If a thin plate-shaped hinge portion is used, then molding is improved, but the rotation trajectory of the cap portion becomes unstable and workability is reduced
Solution Approach 1:
The hinge portion is segmented into a thin plate-shaped main body and a reinforcement piece with a specific shape. The reinforcement piece's geometry is designed to guide the rotation trajectory, ensuring stable movement of the cap portion while maintaining the moldability advantages of the thin plate structure.
Data Source
AI summary
A vehicle handle device configured to operate a door lock device by transmitting an operation force of an operator via a cable device, the vehicle handle device includes an operation member configured to apply the operation force to the cable device by operation of the operator, and a handle case configured to accommodate the operation member. The handle case includes a cable fixing base portion in which the cable device is configured to be disposed, a cap portion configured to fix the cable device to the cable fixing base portion, and a hinge portion which is provided on the cable fixing base portion and the cap portion and is configured to rotate the cap portion relative to the cable fixing base portion.