Motor Vehicle Door Lock Closing Device With Disengageable Force Flux Element
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Solution Overview
Problem
Existing motor vehicle door lock closing devices are complex and costly, requiring sophisticated pinch protection mechanisms to prevent injuries during the closing process, which involves complex sensor systems and additional components.
Innovation Solution
A structurally simple and cost-effective closing device with a transmission featuring a selectively engageable and disengageable force flux element, allowing mechanical interruption of the closing operation without the need for sensors, using a gearwheel element that can be pretensioned by a spring and loaded via a handle or motorized drive to interrupt the force flow from the electric motor to the rotary latch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex sensor systems and additional components are used for pinch protection, then safety effectiveness is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the pinch protection function from complex sensor systems and implements it through a simple mechanical interruption mechanism. The force flux element can be disengaged to mechanically interrupt the force transmission from the electric motor to the rotary latch, providing pinch protection without sensors or additional control systems.
Solution Approach 2:
The closing device provides its own pinch protection through the disengageable force flux element, eliminating the need for external sensor systems. The mechanical interruption capability is built into the transmission itself, allowing the system to protect against pinching through its own structural design rather than requiring separate protective systems.
2Reliability
If complex sensor systems and additional components are used for pinch protection, then safety effectiveness is improved, but manufacturing cost increases
Solution Approach 1:
The patent removes the need for expensive sensor systems and additional components by implementing pinch protection through the disengageable force flux element. This mechanical interruption capability is achieved using existing transmission components that can be selectively engaged or disengaged, significantly reducing manufacturing costs while maintaining safety effectiveness.
Solution Approach 2:
The force flux element serves multiple functions: it transmits force during normal closing operations and can be disengaged to provide pinch protection. This multi-functionality eliminates the need for separate pinch protection components, reducing the overall part count and manufacturing cost while maintaining safety capabilities.
3Reliability
If additional clutches and sensors are added for pinch protection, then safety effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent combines the pinch protection function with the existing transmission system by making the force flux element disengageable. Rather than adding separate clutches and sensors, the interruption capability is integrated into the force transmission path itself, reducing overall device complexity while maintaining safety effectiveness.
4Reliability
If the force flux element is disengaged to interrupt closing operation, then pinch protection is activated, but closing force transmission is interrupted
Solution Approach 1:
The force flux element transitions between engaged and disengaged states dynamically. When engaged, it transmits closing force from the electric motor to the rotary latch. When disengaged, it interrupts force transmission to provide pinch protection. This dynamic state change allows the system to switch between force transmission and safety protection modes as needed.
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 provides effective and cost-efficient pinch protection by allowing direct opening of the motor vehicle door by mechanically separating the rotary latch from the electric motor, eliminating the need for additional clutches and sensors, thus simplifying the design and reducing costs.
Implementation Method 1
the force flux element can be pretensioned by a spring
Implementation Method 2
using a gearwheel element that can be pretensioned by a spring and loaded via a handle or motorized drive
Data Source
AI summary
A closing device for a motor vehicle lock, in particular to a closing aid for a motor vehicle door lock. According to its basic design, said closing aid has a locking mechanism substantially consisting of a rotary latch and a pawl. Furthermore, an electric motor and a transmission following the electric motor are realized. The transmission operates on the rotary latch at least during a closing operation. According to the invention, for the mechanical interruption of the closing operation, the transmission has a force flux element which can be selectively engaged and disengaged.