Door Handle Movement Arrangement Spring Decoupling
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Solution Overview
Problem
Existing door handle systems for vehicles require additional power to tension return springs with each movement into the use position, leading to unnecessary losses and increased wear, which shortens the service life of both the drive and return spring.
Innovation Solution
A movement arrangement that decouples the return spring from tensioning during the transition from the retracted to the use position, allowing the counter bearing to move without tensioning the spring, thus reducing the load on the electric motor and preventing unnecessary wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the return spring is tensioned during movement of the door handle into the use position, then the door handle can be reliably returned to the retracted position, but additional power is required and wear increases
Solution Approach 1:
The return spring is pre-tensioned in the retracted position before movement begins. The coupling between the door handle and return spring is established in advance, so when the door handle moves to the use position, the spring is already prepared to provide the return force without requiring additional tensioning during movement.
Solution Approach 2:
The coupling between the door handle and return spring is dynamically adjusted based on position. The return spring is coupled to the door handle in the retracted position and decoupled in the use position, allowing the system to adapt its mechanical connection according to the operational phase, reducing unnecessary energy consumption.
2Reliability
If the return spring is tensioned during movement into the use position, then the door handle return mechanism functions, but wear on the drive and return spring increases
Solution Approach 1:
The return spring is pre-tensioned in the retracted position before movement begins. The coupling between the door handle and return spring is established in advance, so when the door handle moves to the use position, the spring is already prepared to provide the return force without requiring additional tensioning during movement.
Solution Approach 2:
The coupling between the door handle and return spring is dynamically adjusted based on position. The return spring is coupled to the door handle in the retracted position and decoupled in the use position, allowing the system to adapt its mechanical connection according to the operational phase, reducing unnecessary energy consumption.
3Power
If a larger electric motor is used to tension the return spring, then the door handle can be moved into the use position, but the device complexity and size increase
Solution Approach 1:
The coupling between the door handle and return spring is dynamically adjusted based on position. The return spring is coupled to the door handle in the retracted position and decoupled in the use position, allowing the system to adapt its mechanical connection according to the operational phase, reducing unnecessary energy consumption.
Solution Approach 2:
The return spring is pre-tensioned in the retracted position before movement begins. The coupling between the door handle and return spring is established in advance, so when the door handle moves to the use position, the spring is already prepared to provide the return force without requiring additional tensioning during movement.
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
This solution reduces wear and increases the service life of the door handle system by avoiding additional tensioning of the return spring, allowing a smaller electric motor to be used and minimizing energy losses during operation.
Implementation Method 1
a return spring (4), in particular for returning the door handle (3) from the use position into the retracted position or at least for assisting this returning
Data Source
Figure 1
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AI summary
The invention relates to a movement arrangement (1) comprising a connecting lever (5), a spring tension lever (6), a return spring (4), and an eccentric unit (7). The connecting lever (5) and the spring tension lever (6) are pivotable relative to each other about a common pivot axis (9). The return spring (4) is coupled to a spring contact area (10, 11) of the connecting lever (5) and the spring tension lever (6) such that it can be released and compressed in the opposite direction by the pivoting movement of the spring contact area (11) of the spring tension lever (6) in the direction of the spring contact area (10) of the connecting lever (5).The eccentric unit (7) is rotatably mounted and has eccentric cams (12, 13) for guiding the connecting lever (5) and the spring tensioning lever (6), which are designed such that by rotating the eccentric unit (7) the movement arrangement (1) can be moved from a retracted position to an extended position, the connecting lever (5) and the spring tensioning lever (6) are positioned relative to each other in the retracted and extended positions such that the return spring (4) is partially tensioned, the connecting lever (5) bears against the connecting lever eccentric cam (12) during the rotation of the eccentric unit (7), and the spring tensioning lever (6) bears against the spring tensioning lever eccentric cam (13) in the retracted and extended positions and is spaced apart from the spring tensioning lever eccentric cam (13) in between.