Vehicle Door Lock Bracket Prevents Accidental Opening
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Solution Overview
Problem
Existing vehicle door lock devices can accidentally open due to deformation of the door panel during a collision, as the cable is pressed toward the interior side, causing the cover to open and the outer cable to be released from its locking portion, leading to unintended operation of the cam mechanism.
Innovation Solution
A vehicle door lock device with a bracket that restrains the coupling member to prevent it from being released from the locking portion, even when the door is deformed, ensuring the cam mechanism is not accidentally pulled and the door remains closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cable is allowed to be pressed toward the interior side during collision, then the door panel deformation can be accommodated, but the cover may open accidentally and the door may be opened unintentionally
Solution Approach 1:
The bracket acts as an intermediary component between the cable and the cover. It allows the cable to be pressed toward the interior side during collision (accommodating door panel deformation) while simultaneously preventing the cover from opening accidentally. The bracket serves as a mediator that transmits the pressing force without allowing the harmful effect (accidental opening) to occur.
Solution Approach 2:
The bracket is pre-installed to provide preliminary resistance against the cable pressing force. By having the bracket in place before collision occurs, it preemptively counteracts the force that would otherwise cause the cover to open accidentally, thereby preventing the harmful effect before it can manifest.
2Ease of operation
If the cover is made openable and closable to allow cable access, then the cable can be mounted to the cam mechanism, but the cover may open accidentally during collision causing unintended operation
Solution Approach 1:
The bracket serves as an intermediary structure that allows the cover to remain openable and closable for cable mounting purposes while simultaneously preventing accidental opening during collision. It mediates between the need for accessibility and the need for security.
Solution Approach 2:
The bracket is pre-installed in the housing to provide preliminary protection against accidental cover opening. This preliminary action ensures that even though the cover is designed to be openable for cable access, it remains securely closed during normal operation and collision events.
3Reliability
If the cable is locked to the housing to prevent accidental release, then the door can be secured, but the cable cannot be accessed or adjusted when needed
Solution Approach 1:
The locking mechanism is segmented into two functional parts: a locking portion that secures the cable to the housing (providing reliability) and a cable portion that remains accessible for mounting and adjustment (maintaining ease of operation). This segmentation allows the cable to be securely locked while still enabling necessary access and adjustment.
Data Source
AI summary
Provided is a vehicle door lock device capable of preventing a vehicle door from being opened accidentally even when the vehicle door is deformed. A vehicle door lock device includes: a housing including: a case having an opening portion; and a cover, which is mounted to the case so as to be openable and closable, and is configured to cover the opening portion; a cam mechanism, which is accommodated in the housing, and is supported on the case; and a bracket configured to restrain a cable which is locked to a locking portion formed on the housing, and is configured to connect the cam mechanism and an operation element provided to a door of a vehicle from being released from the locking portion when the cable connected to the cam mechanism in the opening portion is pressed toward the cover side.