Dual-Locking Lock Structure with Strengthened Triangular Latch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lock structures, particularly triangular latches, lack sufficient robustness and burglary resistance due to inadequate material and structural design, failing to provide a dual locking effect for enhanced security.
Innovation Solution
A multifunctional strengthened lock structure incorporating a bolt control unit with specific components like own-axis rotating plates, push plates, butterfly plates, and springs, combined with a strengthened triangular latch featuring a latching head, rod, strengthening ring, and screw, to achieve a dual-locking effect through variations in material, shape, and structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional triangular latch structure is used, then the lock structure is simple, but the burglary resistance and robustness are insufficient
Solution Approach 1:
The latch structure is divided into multiple functional components: latch body, strengthening ring, strengthening screw, bolt control unit with rotating plate and push plates. Each component performs a specific function, allowing the complex strengthening features to be modularly integrated without overwhelming structural complexity
Solution Approach 2:
The latch employs composite construction combining different materials and structural elements - the strengthening ring fits over the rod, the strengthening screw fastens the rod to the latch body, and the bolt control unit incorporates springs and rotating elements. This composite approach enhances overall robustness while maintaining manageable complexity
2Reliability
If a single locking mechanism is used, then the lock structure is simple, but the dual locking effect for enhanced security is not achieved
Solution Approach 1:
The patent merges two distinct locking mechanisms into one integrated system: the triangular latch provides primary locking, while the bolt control unit with rotating plate and push plates provides secondary locking. These are combined through shared components like the rod and coordinated operation, achieving dual locking effect without proportionally increasing complexity
Solution Approach 2:
The bolt control unit serves multiple functions: it controls the triangular latch, provides independent secondary locking through the rotating plate mechanism, and coordinates operation through the push plates. This multi-functionality achieves enhanced security while avoiding the need for completely separate locking systems
3Strength
If the triangular latch is strengthened with additional components, then the robustness is improved, but the manufacturing complexity increases
Solution Approach 1:
The strengthening ring is designed to fit over the rod in a preliminary assembly step, and the strengthening screw is pre-positioned to fasten the rod to the latch body. These strengthening components are prepared and installed in sequence before final assembly, making the manufacturing process more manageable despite the additional components
Solution Approach 2:
Rather than strengthening the entire latch structure uniformly, the patent applies strengthening elements locally - the strengthening ring fits over specific portions of the rod, the strengthening screw fastens at critical connection points, and the bolt control unit reinforces specific operational areas. This localized approach improves robustness while minimizing manufacturing complexity
Data Source
AI summary
A multifunctional strengthened lock structure includes a case and a bolt control unit and a strengthened triangular latch unit arranged in the case. The bolt control unit includes an own-axis rotating plate, a first push plate, a second push plate, a butterfly plate and a first spring, a second spring, and a pressing member, and an arc arrestor. When a lock-cylinder rotating axle is rotated to close, the own-axis rotating plate is rotate to the closed position, and the second push plate is inoperable due to the butterfly plate being pushed to an idle position so as to serve as a blocking plate for the handle rotating axle, thereby achieving a dual-locking effect. A triangular latch includes a latching head, a rod pivotally connected to the latching head, a strengthening ring fit over the rod, and a strengthening screw fastened to the latching head and the rod.