Electronic Lock Transmission Sensing for Stable Manual Operation
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Solution Overview
Problem
Existing electronic locks face issues with motor instability and user operating feel due to reverse electromotive force and resistance when manually controlling the lock with a turnpiece.
Innovation Solution
An electronic lock system with sensors and transmission structures that allow the motor to rotate based on sensor feedback, enabling independent control of the lock mechanism without direct motor interaction during manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor is connected to the turnpiece through a transmission mechanism, then the lock can be manually controlled, but the motor generates reverse electromotive force and resistance that affect power supply stability and operating feel
Solution Approach 1:
The patent extracts the turnpiece from the motor-driven transmission mechanism by providing a separate manual turnpiece that directly operates the bolt without connecting to the motor. This isolation prevents the motor from generating reverse electromotive force and resistance when manually operating the lock, thereby maintaining power supply stability and improving operating feel.
Solution Approach 2:
The patent segments the lock mechanism into two independent control paths: one for motor-driven automatic locking/unlocking and another for manual turnpiece operation. The manual turnpiece directly actuates the bolt through a separate transmission path that does not involve the motor, allowing manual control without interfering with motor performance or power supply stability.
2Extent of automation
If the motor drives the transmission gear to rotate, then the lock can be automatically controlled, but the motor generates resistance to the rotation of the turnpiece affecting operating feel
Solution Approach 1:
The patent extracts the manual turnpiece operation from the motor-driven transmission system. The turnpiece is designed to directly operate the bolt through a separate mechanical path that bypasses the motor and transmission gear, eliminating the resistance generated by the motor during manual operation and thereby improving operating feel while maintaining automatic control capability.
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
Stabilizes power supply and enhances user experience by preventing motor interference during manual lock operation, ensuring smooth and stable locking/unlocking processes.
Implementation Method 1
The first sensor is disposed with respect to the first geometric structure. The first sensor senses a position of the transmission gear through the first geometric structure.
Implementation Method 2
The second sensor is disposed with respect to the second geometric structure. The second sensor senses a position of the transmission shaft through the second geometric structure.
Implementation Method 3
When a user turns the turnpiece to retract or extend the bolt, the motor will be driven in the reverse direction to generate reverse electromotive force, which will affect the stability of a power supply.
Data Source
AI summary
An electronic lock includes a motor, a transmission gear, a transmission shaft, a first sensor and a second sensor. The transmission gear is connected to the motor. The transmission gear has a first transmission structure and a first geometric structure. The transmission shaft is rotatably connected to the transmission gear. The transmission shaft has a second transmission structure and a second geometric structure. The first sensor is disposed with respect to the first geometric structure and senses a position of the transmission gear through the first geometric structure. The second sensor is disposed with respect to the second geometric structure and senses a position of the transmission shaft through the second geometric structure. The motor drives the transmission gear to rotate according to sensing results of the first and second sensors. The transmission gear drives the transmission shaft to rotate through the first and second transmission structures.