Locking Cylinder Knob Decoupling Mechanism
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Solution Overview
Problem
Conventional lock cylinders with electronic key mechanisms cannot be unlocked from the key channel side if the knob is mechanically blocked, and the electronic keys made of plastic can break under such conditions, posing a functional and durability issue.
Innovation Solution
The lock cylinder incorporates an electronically controlled blocking device with a movable ramp that enables or blocks the movement of the coupling element between basic and closed positions, allowing the knob to be decoupled from the locking bit when opened with a key, and a compact design featuring a displaceable sliding bolt and guide pin for simplified assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the knob is mechanically blocked, then the locking mechanism cannot be operated from the knob side, but the lock cylinder cannot be unlocked from the key channel side either and the electronic key may break
Solution Approach 1:
The locking mechanism is segmented into two independent operational paths: one through the knob with coupling element and cam, and another through the key channel with locking bit. The blocking device electronically controls the coupling between these segments, allowing the key channel to operate independently when the knob is blocked, ensuring unlocking reliability while maintaining operational ease.
2Stability of the object's composition
If the coupling element is held in basic position by frictional connection, then the connection is maintained, but the coupling element cannot be tilted or moved when needed
Solution Approach 1:
The purely mechanical frictional connection is replaced by an electronically controlled blocking device that uses signals from the key to control the movement of the coupling element. The ramp structure provides a controlled mechanical path that allows the coupling element to move between basic and closed positions based on electronic control, maintaining stability when needed while enabling movement when required.
3Reliability
If a complex actuator with frictional connection is used to control the coupling unit, then the connection can be maintained, but the device complexity increases
Solution Approach 1:
The complex actuator with frictional connection is extracted and replaced by a simpler electronic blocking device that controls the coupling element's movement. The blocking device receives electronic signals from the key and controls the ramp to guide the coupling element, eliminating the need for complex mechanical actuators while maintaining connection reliability through electronic control.
4Ease of operation
If the sliding bolt has large-diameter and small-diameter sections with ramp, then the coupling element control is simplified, but the device complexity increases
Solution Approach 1:
The sliding bolt combines multiple functions into a single component: the large-diameter and small-diameter sections with the ramp surface are integrated into one piece that both guides and controls the coupling element. This merging of functions simplifies the control mechanism while the modular design allows straightforward assembly, balancing ease of operation with acceptable device complexity.
Data Source
Figure 1
Figure 2~5
AI summary
The cylinder lock has main portion (1) that is provided with close channel (3) whose specific side is provided with knob (2), while other side is provided with key insertion hole. The knob is connected to knob axle (4) via knob-side core portion (5), and the close channel is provided with channel-side core portion (6). The core portions are coupled to close beard adapter (7) having locking portion (8). The knob is rotated to different positions so that the close beard adapter having locking portion is rotated so as to lock or unlock the cylinder.