Multiple-Latch Lock Structure with Integrated Vertical Latch
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Solution Overview
Problem
Conventional lock structures lack effective integration of multiple latching functions to enhance security and burglary resistance, with standalone vertical latches not functioning in combination with the lock.
Innovation Solution
A multiple-latch-locking lock structure comprising a casing with a lock tongue control unit and a lock latch control unit, utilizing components like operation-linking members, positioning members, swinging members, and slide plates to achieve simultaneous latch-locking and unlocking of bolts, latches, and control of a vertical latch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lock structure with standalone vertical latch is used, then the basic locking function is achieved, but the security and burglary resistance are insufficient due to lack of integrated multiple latching functions
Solution Approach 1:
The patent merges the vertical latch mechanism with the lock body into an integrated assembly. The vertical latch is operatively coupled to the lock tongue through a latch control unit, allowing them to function together as a unified security system rather than separate standalone components. This integration enables coordinated operation where the lock tongue and vertical latch work in unison to provide enhanced security.
Solution Approach 2:
The lock structure is designed with multi-functionality by incorporating both a lock tongue control unit and a latch control unit within a single lock body. The system can operate in multiple modes: traditional key-based locking, handle-based vertical latch control, and combined operations. This universal design allows the same lock structure to provide various locking functions depending on the operational mode selected.
2Reliability
If multiple latching functions are integrated into the lock structure, then security and burglary resistance are enhanced, but the ease of operation becomes more complex
Solution Approach 1:
The control system is segmented into distinct functional units: a lock tongue control unit responsive to key operation, and a latch control unit responsive to handle operation. Each unit independently controls specific latching functions, allowing users to operate only the necessary function for their needs. This segmentation simplifies the user interface by providing dedicated controls for different locking modes.
Solution Approach 2:
The lock structure incorporates dynamic control mechanisms where the lock tongue and vertical latch can be independently activated or deactivated based on operational mode. The system transitions between different operational states (locking, unlocking, vertical latch engagement) through dynamic response to different inputs (key rotation, handle rotation), providing flexibility without overwhelming complexity.
3Reliability
If additional locking devices such as vertical latch are added, then the security function is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The vertical latch mechanism is nested within the lock body structure. The latch control unit is housed inside the lock body, and the vertical latch operates within the same overall structure as the lock tongue. This nested arrangement consolidates multiple components into a compact integrated assembly, reducing the number of separate manufacturing steps and assembly operations required compared to completely separate standalone components.
Solution Approach 2:
The lock body is designed as a universal structure that accommodates both the lock tongue mechanism and the vertical latch mechanism. Shared components such as the casing, control units, and mounting structures serve dual purposes for both latching functions, reducing the total number of unique parts that need to be manufactured and assembled.
Data Source
AI summary
A multiple-latch-locking lock structure includes a casing in which a lock tongue control unit and a lock latch control unit are arranged. The lock tongue control unit includes an operation-linking member, a positioning member, an arresting member, a swinging member, and a slide block. When a lock core is rotated, the rectangular lock tongue and the triangular lock tongue are driven to get pushed out and retracted back for latch-locking and unlocking. The lock latch control unit includes a rotating member, a slide plate, and a slide bar. When a handle is rotated, the lock latch is driven to get pushed out and retracted back, thereby achieving security latch-locking and the slide plate is caused to move up and down to achieve a function of controlling a vertical latch. As such, multiple latch locking can be achieved to provide the lock with better security and better burglary resistance.