Door Latch Switch Plate Connector Sharing
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Solution Overview
Problem
The existing door latch devices with standard and special electric parts require separate switch plates due to different arrangements and shapes, leading to complex connector connections and reduced efficiency, necessitating separate manufacturing and increased costs.
Innovation Solution
A door latch device design that incorporates a standard switch plate with a connector featuring a connecting hole for fitting a special switch plate, allowing shared use of connectors for both standard and special electric parts, thereby simplifying the connection process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate switch plates are used for standard and special electric parts, then each switch plate can be optimized for its specific electric part arrangement, but the connector connection work becomes complicated and working efficiency is reduced
Solution Approach 1:
The patent applies universality by designing a single switch plate that can serve both standard and special electric part configurations. The switch plate includes a standard electric part mounting area and a special electric part mounting area, allowing one switch plate to replace what would traditionally require two separate switch plates. This enables workers to use the same connector for both standard and special electric parts, simplifying the connection process and improving working efficiency while maintaining optimized electrical connections for each electric part type.
2Reliability
If separate switch plates are manufactured for standard and special electric parts, then each switch plate can be dedicated to specific electric part arrangements, but manufacturing costs increase due to separate production
Solution Approach 1:
The patent merges the functionality of two separate switch plates into a single integrated switch plate structure. The unified switch plate includes mounting areas for both standard electric parts (locking/unlocking motor, detection switch) and special electric parts (double locking motor), along with a single connector that provides electrical connections for all electric parts. This consolidation reduces manufacturing complexity by producing one switch plate design rather than two separate designs, while maintaining reliable electrical connections for all electric part types.
3Reliability
If two connectors are provided on the switch plate for separate energization of standard and special electric parts, then each electric part can be independently energized, but the connecting work between connectors becomes complicated
Solution Approach 1:
The patent implements universality through a single multi-functional connector that replaces two separate connectors. This unified connector includes connection terminals that can establish electrical connections with both standard electric parts and special electric parts. The connector design allows it to serve multiple functions: connecting to the locking/unlocking motor, detection switch, and double locking motor through a single connection interface, thereby reducing device complexity while maintaining independent energization capability for all electric parts.
Data Source
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AI summary
It is an object of the present invention to provide a door latch device which improves efficiency of connection work with an external connector and reduces costs by sharing a connector used for a door latch device equipped with standard electric parts and a connector used for a door latch device equipped with special electric parts in addition to the standard electric parts. The connector 32 of the standard switch plate 26, in a portion not having the standard connection terminals 304, has a connecting hole 33 which penetrates in the connection direction of the external connector and into which another switch plate 46 conductive to another electric part different from the standard electric part can be fitted.