Lock Bolt Arrangement with Sliding Frame for Manipulation Resistance
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Solution Overview
Problem
Existing lock body designs are vulnerable to manipulation, such as lock picking, especially when changing the orientation of a latch bolt, as the existing solutions are not suitable for latch bolts and require opening the lock body to reorient, leaving gaps that can be exploited.
Innovation Solution
A bolt arrangement featuring a latch bolt with grooves and ridges and a separate frame behind the front plate, which minimizes the gap between the bolt hole and the latch bolt, making it difficult to push wires or strips inside, and allows for orientation change without opening the lock body by using a sliding mechanism with increasing play as the latch bolt moves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a projection/threshold is added behind the front plate to prevent manipulation, then resistance to manipulation is improved, but the ability to change orientation of the lock body is worsened
Solution Approach 1:
The lock body is divided into separate functional components: a front plate with bolt hole, a rear plate, and a latch bolt assembly that can be independently removed and reoriented. This segmentation allows the latch bolt to be extracted through the front plate hole, rotated 180 degrees, and reinserted to change the lock orientation without damaging the lock body structure.
Solution Approach 2:
The latch bolt is designed to be extractable from the lock body through the front plate bolt hole. By taking out the latch bolt, rotating it, and reinserting it, the orientation of the lock body can be changed. This extraction mechanism resolves the contradiction by allowing orientation change while maintaining the secured structure that resists manipulation.
2Object-affected harmful factors
If the gap between the bolt hole and latch bolt is minimized to prevent manipulation, then resistance to manipulation is improved, but the ease of operation for changing orientation is worsened
Solution Approach 1:
The latch bolt is designed with dynamic characteristics that allow it to be easily inserted and extracted through the front plate bolt hole when needed for reorientation. The minimal gap provides sufficient clearance for this operational movement while maintaining security during normal locked state, balancing manipulation resistance with operational ease.
Data Source
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AI summary
The invention relates to a bolt arrangement for a lock body. The bolt arrangement comprises a frame (8), whose ends (25, 26) are open. On the sides of the frame, there are ridges (9) and slots (10) located between them. The bolt (4) of the bolt arrangement has corresponding shapes (9, 10). The bolt can be turned to change the orientation of the lock body. The bolt and the frame prevent manipulation of the lock body.