Double Lock Cylinder Ball Coupling for Pull-Out Resistance
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Solution Overview
Problem
Existing double locking cylinders suffer from low stability and security due to their two-part design, which limits their resistance to manipulation and unauthorized unlocking.
Innovation Solution
The implementation of positive locking means using balls arranged coaxially between the cores and the locking bar, along with a one-piece ring element, enhances stability and security by preventing relative rotation and allowing high axial force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the locking bolt is designed in two parts for assembly, then the ease of manufacture is improved, but the stability of the locking bolt deteriorates
Solution Approach 1:
The patent merges the two-part locking bolt design into a one-piece locking bolt manufactured from a single piece of material. This eliminates the joint between parts while maintaining manufacturability through techniques like precision casting or machining, thereby resolving the contradiction by achieving both stability (through unified structure) and ease of manufacture (through single-piece fabrication processes)
2Ease of operation
If the locking bolt is designed in two parts, then the ease of assembly is improved, but the security against manipulation attempts deteriorates
Solution Approach 1:
The one-piece locking bolt design eliminates joints and interfaces that could be exploited for manipulation. The unified structure provides inherent security while maintaining ease of assembly through simple installation procedures, resolving the contradiction between security and ease of assembly
3Stability of the object's composition
If balls are arranged in coaxially superimposed sections, then the stability and force transmission are improved, but the device complexity increases
Solution Approach 1:
The patent arranges balls in coaxially superimposed sections along the axial dimension, creating a multi-level bearing structure that enhances stability and force transmission. This dimensional arrangement allows the balls to be positioned at different axial levels while maintaining radial alignment, thereby achieving improved mechanical performance without excessive complexity through systematic spatial organization
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design provides exceptional stability and security against manipulation, reducing friction and ensuring reliable locking even if the housing breaks, while maintaining simplicity in assembly and production.
Implementation Method 1
The balls can transmit significant forces in the axial direction. They offer considerable resistance to any attempt to manipulate the locking bolt by pulling a core out of the housing.
Implementation Method 2
Additionally, the balls reduce friction during relative movement of one of the cores with respect to the locking bolt.
Data Source
Figure 1~2
Figure 3~4
AI summary
In a double-lock cylinder, rotatable cores (2, 3) within a housing (1) are coupled to the locking bolt (4) in the direction of pull via balls (15). In the event of a manipulation attempt, the balls (15) create significant resistance against pulling out the core (2, 3). During operation, the balls (15) also reduce friction between a stationary core (2, 3) and the locking bolt (4).