Vehicle Door Handle Pinless Hinge Design
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Solution Overview
Problem
Existing vehicle door handles face challenges with high manufacturing and assembly costs due to the need for strong, metallic pins to withstand torsion efforts, which also complicate the assembly process.
Innovation Solution
A vehicle door handle design that eliminates the use of pins by employing a pivot mechanism and rolling surfaces, allowing the lever to rotate on a lock or dummy lock, thereby reducing effort dispersion and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metallic pins are used to hinge the mobile part to the fixed part, then the handle can withstand torsion efforts, but manufacturing and assembly costs increase
Solution Approach 1:
The patent removes the metallic pin from the hinge mechanism entirely. Instead of using a separate pin component, the invention integrates the hinge function directly into the interaction between the lever's swan neck and the lock body, eliminating the need for expensive metallic pins while maintaining structural integrity and torsion resistance.
Solution Approach 2:
The patent combines the hinge function with the existing lever and lock body components. The swan neck of the lever and the corresponding receptacle in the lock body are designed to work together as an integrated hinge mechanism, merging what were previously separate functions (hinge and locking) into a unified structure.
2Strength
If metallic pins are used to hinge the mobile part to the fixed part, then the handle can withstand torsion efforts, but assembly time increases
Solution Approach 1:
By removing the metallic pin component entirely, the assembly process is simplified. The lever can be directly attached to the lock body through the swan neck and receptacle interface without requiring separate pin insertion steps, reducing assembly time and complexity.
Solution Approach 2:
The hinge mechanism is segmented into the swan neck portion of the lever and the receptacle portion of the lock body, allowing for modular assembly. This segmentation enables the lever to be attached to the lock body in a straightforward manner without requiring complex pin fitting procedures.
3Reliability
If strong material pins are used to resist torsion efforts, then the hinge is durable, but the complexity of the system increases
Solution Approach 1:
The patent eliminates the separate pin component that added to system complexity. By removing this element, the hinge mechanism becomes simpler while maintaining durability through the optimized swan neck and receptacle design that directly withstand torsion loads.
Solution Approach 2:
The hinge function is merged with the lever and lock body structures themselves. The swan neck and receptacle are designed as integral parts of these components, eliminating the need for separate hinge hardware and reducing overall system complexity while maintaining structural integrity.
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 results in a more reliable, efficient, and cost-effective door handle with reduced assembly time, as it disperses efforts better than traditional pin-based systems and eliminates the need for expensive pin materials.
Implementation Method 1
the lever and the insertable body comprise a rolling surface and a pivot forming a hinge around which the lever is rotationally mobile
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a vehicle door handle (1), comprising: - a lever (3), rotationally mobile between a rest position, and a release position, - a handle mechanism (77), configured to release the opening of a vehicle door when actuated, the handle mechanism (77) being actuated by the lever (3) when said lever (3) is in release position, - an insertable body (5), the lever (3) and the insertable body (5) comprising a rolling surface (58) and a pivot (35) forming a hinge around which the lever (3) is rotationally mobile, one of the two being comprised in the lever (3), and the other one in the insertable body (5).