Sliding Door Fixing Device with Manual Release Flexibility
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Summary
Problems
Existing sliding door fixing devices for motor vehicles often fail to allow manual closing or sliding without prior release state activation, leading to user discomfort and potential component damage during improper operation or power failures.
Innovation solutions
Incorporating a flexible section into the fixing force effect chain that yields under manual overload, allowing manual release of the sliding door, and using an adjustable engagement element, such as a two-part rotary latch or pivotable fixing pawl, to enable safe and secure operation.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the fixing device is designed to securely fix the sliding door in the open position using a motor-driven release mechanism, then the fixing reliability is improved, but the ease of operation deteriorates when manual closing is attempted without prior release activation
Why choose this principle:
The engagement element's mechanical properties are changed by introducing a flexible section that can yield under overload conditions. This allows the system to transition from a rigid locked state to a compliant failed state, enabling manual closing even when the motor-driven release mechanism is not activated.
Principle concept:
If the fixing device is designed to securely fix the sliding door in the open position using a motor-driven release mechanism, then the fixing reliability is improved, but the ease of operation deteriorates when manual closing is attempted without prior release activation
Why choose this principle:
The potential harmful effect of improper manual operation is converted into a beneficial feature by designing the engagement element to fail safely through yielding. The overload condition that could damage components is instead used as a release mechanism, allowing the door to be closed manually even when the electronic release system is not activated.
Application Domain
Data Source
AI summary:
Incorporating a flexible section into the fixing force effect chain that yields under manual overload, allowing manual release of the sliding door, and using an adjustable engagement element, such as a two-part rotary latch or pivotable fixing pawl, to enable safe and secure operation.
Abstract
The invention relates to a fixing device for a sliding door (2) of a motor vehicle (3), the sliding door (2) being adjustable on the vehicle body (4) between an open position and a closed position, the fixing device (1) being in a fixing state in which it fixes the sliding door (2) in the open position in the assembled state via a fixing force effect chain (5) on the vehicle body (4), and can be brought into a release state in which it releases the sliding door (2) in the closing direction in the assembled state whereby the fixing device (1) can be brought from the fixing state into the release state by a motor by means of a drive arrangement (6). It is proposed that the fixing force effect chain (5) be assigned a flexible section (8) which, in the installed state, also bears the load during an annual closing/sliding actuation of the sliding door (2) fixed in the open position, which is above a predetermined limit load, yields and thereby releases the sliding door (2) in the closing direction.