Cylinder Lock Anti-Burglary Pin and Slide Mechanism
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Solution Overview
Problem
Existing cylinder locks are vulnerable to burglary due to easily overcomeable decoding key elements loaded under springs, allowing quick unlocking with burglary tools.
Innovation Solution
A cylinder lock with a core and housing featuring hardened metal additional pin assemblies and profiled slides with 'isosceles trapezium' shapes, along with a key blank with movable elements and a wave groove, providing increased coding possibilities and anti-burglary features, including free rotation of movable elements and selective key positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If decoding key elements are loaded under springs to enable easy operation, then the lock can be operated smoothly, but the lock becomes vulnerable to burglary tools that can quickly overcome spring-loaded pins
Solution Approach 1:
The patent changes the material parameter of the pin assembly from spring-loaded metal pins to a resilient polymer pin that deforms elastically under insertion force. This material parameter change maintains smooth operation through elastic deformation while preventing burglary tool manipulation since the polymer pin cannot be reliably actuated by traditional picking or pushing tools
Solution Approach 2:
The patent employs a composite structure combining a resilient polymer material for the pin assembly with a rigid housing and core. The polymer material provides both the operational flexibility needed for smooth key insertion and the resistance to burglary tools, while the rigid structural components provide overall mechanical support and precision alignment
2Device complexity
If traditional pin assemblies are used to simplify the locking mechanism, then the construction is simplified, but the coding possibilities and anti-burglary features are reduced
Solution Approach 1:
The patent segments the pin assembly into multiple identical resilient polymer pins arranged in a circular pattern, each capable of independent deformation. This segmentation allows for multiple coding positions around the circumference, dramatically increasing coding possibilities while maintaining the simplicity of using identical repeated components throughout the assembly
Solution Approach 2:
The resilient polymer pin assembly serves multiple functions simultaneously: it provides the decoding mechanism for authorized keys, acts as a burglar-resistant element that cannot be easily manipulated by tools, and enables multiple coding configurations through the circular arrangement of pins at different radial positions
Data Source
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AI summary
Cylinder lock with associated key and key blank therefor, used in configuration of locking systems with increased security for living houses, public buildings, for cabinets, safes, padlocks etc. The cylinder lock comprises housing (2), core (3. Coaxial bores (35, 36) are formed with axially disposed respectively basic core pins (6) and housing pins (7). Disposed is additional pin assembly (9) in the core (3) to push built-in movable element (12) into the key, thus to engage with its opposite basic core pin (6). Core recesses (15) are formed in the core (3).Profiled slides (16) are disposed having side protrusions (17) to block in corresponding housing recesses (18, 19), as well one protrusion (20) protrudes in the key channel (4) to engage one wave groove (21) on the key (5). Side core bores (13) are formed in the core (3) sidelong key channel (4), side core pins (14) are disposed in the said side core bores (13) to engage with the side coding combination (33) made on the side cramped surfaces (26) of the relevant key (5).