Interior Door Handle Integrated Pivoting Lever Actuator
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Solution Overview
Problem
Existing door lock actuators for motor vehicle doors often compromise between space efficiency and functionality, particularly in integrating a pivoting lever that provides a long lever arm while saving space, and ensuring mechanical actuation without power in case of emergencies.
Innovation Solution
A door lock actuator with a pivoting lever integrated into the interior door pull handle, oriented transversely to the handle's axial extent, allowing for space-saving integration and enabling mechanical actuation without power, featuring a freewheel mechanism and a locking device for secure operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the pivoting lever is integrated above the handle region, then the lever arm length is increased, but the space consumption and device complexity increase
Solution Approach 1:
The pivoting lever is repositioned from a vertical arrangement (above the handle region) to a horizontal arrangement (within the handle region, extending in the axial direction). This dimensional change allows the lever arm to achieve sufficient length while remaining compact and integrated within the existing handle space, resolving the contradiction between lever arm length and space consumption
2Volume of moving object
If the pivoting lever is integrated into the handle region with transverse orientation, then space is saved and functionality is maintained, but the structural complexity increases
Solution Approach 1:
The handle region is designed to serve multiple functions: it acts as both the gripping surface for door opening and as the integration housing for the pivoting lever mechanism. The pivoting lever itself serves dual purposes by providing both the mechanical advantage for lock actuation and maintaining ergonomic handle functionality. This multi-functionality reduces the need for separate components, thereby saving space while managing complexity through functional consolidation
3Reliability
If mechanical actuation without power is enabled, then emergency operation capability is improved, but the device complexity increases due to additional mechanisms
Solution Approach 1:
The system incorporates a freewheel mechanism that automatically engages when power is lost or unavailable. This passive mechanical device requires no external control or power source to provide the emergency mechanical actuation capability. The freewheel allows the pivoting lever to freely actuate the door lock mechanism without power assistance, ensuring reliable emergency operation while minimizing the complexity of additional active components
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 compact and functional door lock actuator that allows for efficient mechanical actuation of the door lock without power, ensuring reliable operation in emergencies while maintaining a pleasing design and ergonomic grip.
Implementation Method 1
a door lock actuator with a pivoting lever integrated into the interior door pull handle, oriented transversely to the handle's axial extent, allowing for space-saving integration and enabling mechanical actuation without power
Implementation Method 2
featuring a freewheel mechanism and a locking device for secure operation
Implementation Method 3
featuring a freewheel mechanism and a locking device for secure operation
Data Source
AI summary
A side door of a motor vehicle has a door lock actuator for a door lock, and a pivoting lever pivotable about a rotational axis of a joint. The pivoting lever has a coupling section coupled to a mechanical actuating member of the door lock in the installed state. An interior door pull handle has one or more fastening regions and at least one handle region having an axial extent. The pivoting lever is integrated into the handle region of the interior door pull handle. The rotational axis is oriented substantially transversely with respect to the axial extent.