Vehicle Door Lock Connecting Unit Wiring Simplification
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Solution Overview
Problem
The complexity of wiring shapes in door lock devices increases costs and reduces assembly efficiency due to the need for intricate wiring configurations for switch detection systems.
Innovation Solution
A vehicle door lock device design that includes a connecting portion for external devices, a casing with a latch mechanism, a locking and unlocking mechanism driven by a motor, and switches for detecting rotational positions, with a connecting unit divided into first and second connecting units to simplify wiring configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If switches are added to detect rotational positions of latches, then detection capability is improved, but wiring complexity increases
Solution Approach 1:
The patent combines multiple wiring functions into a single integrated connecting unit that serves both the motor and switches. This connecting unit includes multiple terminals that can be connected to different components, eliminating the need for separate wiring paths and reducing overall wiring complexity while maintaining full detection capability.
Solution Approach 2:
The connecting unit is designed as a multi-functional component that handles both motor power connection and switch signal transmission through its multiple terminals. This universal connecting unit replaces what would traditionally require separate wiring assemblies, thereby reducing device complexity without compromising detection precision.
2Measurement precision
If wiring shapes become complicated to accommodate switches, then detection function is achieved, but manufacturing cost increases
Solution Approach 1:
By merging the wiring functions into a single connecting unit with multiple terminals, the patent eliminates complicated wiring shapes that would increase material waste and manufacturing costs. The integrated design allows for simpler, more efficient production processes.
3Measurement precision
If wiring shapes become complicated to accommodate switches, then detection function is achieved, but assembly efficiency decreases
Solution Approach 1:
The integrated connecting unit consolidates multiple wiring functions into a single component that can be installed as one unit rather than multiple separate wiring assemblies. This significantly improves assembly efficiency by reducing the number of steps and components involved in the assembly process.
Data Source
AI summary
A vehicle door lock device includes: a connecting portion to which a connector for connection to an external device is connected; a casing; a latch mechanism that is arranged at a rear end portion of the casing in a vehicle front-rear direction and includes a latch and a ratchet; a locking and unlocking mechanism arranged in the casing, the locking and unlocking mechanism including: a lever lock that switches between transmitting or not transmitting a door opening operation to the latch mechanism according to a rotational position; and a motor that drives the lever lock; a first switch that detects a rotational position of the lever lock; a second switch that detects a rotational position of the latch; and a connecting unit that electrically connects the connecting portion to the motor, the first switch and the second switch.