Angular Lever Coupling Device for Vehicle Door Actuation
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Solution Overview
Problem
Existing mechanisms for coupling and uncoupling vehicle door opening and closing mechanisms with drive motors are not compact enough and have inaccessible traction element connections, making them less efficient.
Innovation Solution
A compact device using a bent angular lever with a fixed fulcrum and elastic means to rotate a support plate, allowing for easy actuation and optimal positioning of components, ensuring the motor shaft is uncoupled from the gear wheel when needed, with the lever's ends and connected components strategically located for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a straight lever is used in the existing mechanism, then the structure is simpler, but the mechanism is not compact and the traction element connection is inaccessible
Solution Approach 1:
The straight lever is replaced with an angular (bent) lever that has a specific geometric configuration. This curvature allows the lever to fold back on itself, making the traction element connection accessible from the outside while maintaining a compact overall structure. The angular shape optimizes the spatial arrangement of components without increasing the mechanism's volume.
2Adaptability or versatility
If the lever is actuated to uncouple the motor shaft from the gear wheel, then the door can be opened in emergency, but the coupling between motor and mechanism is disrupted
Solution Approach 1:
The lever system is designed to be dynamically switchable between two stable positions: a coupled position where the motor shaft is engaged with the gear wheel for normal operation, and an uncoupled position where the motor shaft is disengaged for emergency door opening. The angular lever geometry with elastic means provides inherent stability in both positions while allowing easy transition between them.
3Volume of moving object
If the angular lever is used with optimized component positioning, then the mechanism becomes more compact and accessible, but the structural complexity increases
Solution Approach 1:
The angular lever integrates multiple functions into a single component: it acts as the actuating lever, provides the structural framework for mounting the elastic means, and serves as the connection element for the traction element. The bar articulated to the support plate is integrated with the lever's resistance arm. This merging of functions reduces the number of separate parts and simplifies the overall structure despite the angular geometry.
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 a more compact and accessible mechanism for coupling and uncoupling, ensuring reliable operation by maintaining the motor and gear wheel connection during operation and allowing easy actuation for uncoupling, enhancing the operational efficiency and accessibility of the mechanism.
Implementation Method 1
the second end portion (14) of which is subjected to the action of elastic means (13) tending to move the lever (8) towards a stable position of coupling
Data Source
Figure 1~3
Figure 4
AI summary
The present invention relates to a device suitable for mechanisms comprising a speed reducer unit with a gear wheel geared with the motor, comprising a support plate for supporting the motor, which can rotate in both directions about a shaft integral with the speed reducer unit, and movement means for moving the support plate comprising an angular lever the resistance arm of which comprises a first end portion, provided with a bar articulated thereto and to a point of the support plate, and a side appendage defining a second end portion, this end portion being subjected to the action of elastic means tending to move the lever towards a stable position of gearing between the gear wheel and the shaft of the motor.