Key Rotor Mechanism for Manual Switches
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Solution Overview
Problem
Manual key switches require users to hold the key in place while operating basketball hoops or partition walls, diverting attention and time away from monitoring students.
Innovation Solution
A key holder with a key rotor and rotor housing that transforms rotational motion into linear motion, preventing the key from rotating back to its straight position, thus securing the key in place without manual holding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual key switch is used to operate basketball hoops or partition walls, then the mechanical function of raising or lowering is achieved, but the user must hold the key in place continuously, diverting attention from monitoring students
Solution Approach 1:
The key rotor mechanism automatically maintains the key in the activated position through its mechanical design. Once the key is inserted and rotated to activate the switch, the rotor's geometry and friction characteristics prevent it from rotating back, allowing the device to maintain its state without continuous user intervention. This self-servicing mechanism frees the user's hands and attention for monitoring students.
2Productivity
If the key is held in place manually during operation, then the key switch can be activated, but the user cannot multitask and must focus on key manipulation
Solution Approach 1:
The key rotor is designed with asymmetric geometry and friction characteristics that cause it to remain in the activated position once rotated. The rotor's shape creates a mechanical lock effect where gravity and friction prevent spontaneous rotation back to the neutral position, enabling the user to activate the switch and immediately engage in other tasks without needing to maintain grip on the key.
3Reliability
If a traditional key switch mechanism is used, then simple operation is achieved, but the key can rotate back to the straight position causing loss of activation
Solution Approach 1:
The key holding function is separated from the key switch operation. The key rotor acts as an independent component that mechanically decouples the key's rotational state from the switch's activated state. Once the key rotates the rotor to activate the switch, the rotor's geometric design prevents reverse rotation, ensuring the key remains in the activated position without requiring complex locking mechanisms.
Solution Approach 2:
Instead of using a traditional spring-loaded or mechanically locked switch that prevents key rotation back to neutral, this invention inverts the approach by using a rotor that naturally wants to return to neutral but is prevented from doing so by the switch's activated state. The friction and geometry work in reverse of conventional designs, allowing simple activation while maintaining reliability.
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
Enables users, such as teachers and coaches, to multitask by freeing their hands, allowing them to operate basketball hoops or partition walls without constant key manipulation, saving time and maintaining focus on students.
Implementation Method 1
The screw connection between the threaded opening and the key rotor transforms rotational motion of the key into linear motion of the key rotor. This prevents the key from rotating in either the clockwise or counter-clockwise direction, thereby holding the key in position while the manual key switch is activated.
Data Source
AI summary
A key holder designed for use with manual key switches affixes a key onto a control box. The key holder includes a rotor housing, a key rotor, and a threaded opening. The key is mounted into the key rotor before being inserted into the control box. Further, the key rotor is rotatably mounted into the rotor housing via the threaded opening. The key rotor includes an interior face, an exterior face, a threaded body, and a key slot. The interior face and exterior face are positioned opposite each other about the threaded body. The key slot traverses through the threaded body. To connect the key rotor to the rotor housing, the threaded body is screwed into the threaded opening. This transforms the rotational motion into the linear motion of the key rotor, which along with the locking feature of the manual key switch, prevents the key from rotating.