Vehicle Door Latch Relay Mechanism for Release State Cancellation
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Solution Overview
Problem
Conventional vehicle door opening and closing apparatuses require special manual operations to cancel a release restrained state, which can be cumbersome and inconvenient, especially in limited space within a vehicle.
Innovation Solution
A vehicle door opening and closing apparatus featuring a closing latch mechanism, an opening latch mechanism, a release electric mechanism, an opening latch interlocking mechanism, and a relay mechanism, where the opening latch interlocking mechanism operates to cancel the release restrained state through a cable routed within the door trim, allowing normal door operation to restore the closed position without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a release restrained state cancellation mechanism is installed inside the vehicle door, then the door can be retained in closed position without special user operations, but the device complexity and space requirements increase
Solution Approach 1:
The opening latch interlocking mechanism is merged with the existing opening latch mechanism, allowing both mechanisms to share the same installation space within the door. The relay mechanism is integrated into the existing door latch system, utilizing available space rather than requiring separate dedicated space for the release restrained state cancellation function.
Solution Approach 2:
The opening latch interlocking mechanism serves dual purposes: it operates the relay mechanism to cancel the release restrained state and simultaneously functions as part of the door opening/latching system. This multi-functionality reduces the need for additional dedicated components solely for release restrained state cancellation.
2Reliability
If a release restrained state cancellation mechanism is installed inside the vehicle door, then the door can be retained in closed position without special user operations, but the installation space requirements increase
Solution Approach 1:
The cable for operating the opening latch interlocking mechanism is routed through the door trim, nesting the cable path within the existing door structure. The opening latch interlocking mechanism is positioned to utilize the limited space within the door assembly, fitting into available gaps and spaces rather than requiring dedicated volume.
3Device complexity
If special manual operations are required to cancel release restrained state, then the mechanism complexity is reduced, but the ease of operation deteriorates
Solution Approach 1:
The system performs self-service by automatically detecting the release restrained state and enabling cancellation through the existing opening latch operation. When the door is opened and closed normally, the opening latch interlocking mechanism automatically operates the relay mechanism to cancel the release restrained state without requiring the user to perform special manual operations or consult vehicle manuals.
Data Source
AI summary
A vehicle door opening and closing apparatus includes: a closing latch mechanism having a first latch and a first ratchet; an opening latch mechanism having a second latch and a second ratchet; a release electric mechanism configured to operate the first ratchet to a released position; an opening latch interlocking mechanism configured to operate in a cancel direction from an initial position in association with movement of the second latch from the unlatched position to the latched position; a relay mechanism configured to enable returning of the first ratchet stopped at the released position by switching over from a connected state to a disconnected state; and a cable that is routed through inside of a door trim and that transmits the operation of the opening latch interlocking mechanism in the cancel direction to the relay mechanism.