Direct-Coupled Stepping Motor Operation Element for Tactile Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rotation operation devices fail to directly transmit the click feeling from a stepping motor to the operator's fingers due to the presence of gears between the operation element and the rotating shaft, which deteriorates the static torque sensation.
Innovation Solution
A rotation operation device design where the operation element is directly attached to the rotating shaft of the stepping motor, eliminating the need for gears, and incorporating a rotation position detection unit and an elastic member to maintain stable operation and separate from the switch, ensuring the click feeling is transmitted directly to the operator's fingers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gears are used to connect the operation element and the rotating shaft of the stepping motor, then the device can achieve mechanical transmission, but the click feeling (static torque) of the stepping motor deteriorates and is not directly transmitted to the operator's fingers
Solution Approach 1:
The patent removes the gear transmission mechanism from the system, directly connecting the operation element to the rotating shaft of the stepping motor. This extraction of the intermediate gear component eliminates the deterioration of click feeling while maintaining the essential mechanical transmission function.
Solution Approach 2:
The operation element is directly integrated with the rotating shaft of the stepping motor, merging two previously separate components. This direct coupling ensures that the static torque and click feeling generated by the stepping motor are transmitted directly to the operator's fingers without loss through gear intermediaries.
2Device complexity
If gears are used to connect the operation element and the rotating shaft, then mechanical transmission is achieved, but the structure becomes more complex
Solution Approach 1:
By removing the gear train from the system, the patent simplifies the mechanical structure while simultaneously improving reliability. The direct connection between the operation element and rotating shaft eliminates potential failure points in the gear meshing mechanism and ensures more reliable transmission of the click feeling.
3Ease of operation
If the operation element is directly attached to the rotating shaft without gears, then the click feeling is directly transmitted to the operator's fingers, but the mechanical transmission ratio changes
Solution Approach 1:
The patent changes the transmission parameter from gear-based mechanical advantage to direct 1:1 coupling. This parameter change prioritizes tactile feedback quality over adjustable transmission ratios, ensuring that the click feeling is preserved while the system operates with direct motor-to-element connection.
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 effectively transmits the click feeling from the stepping motor to the operator's fingers, enhancing the ease of operation by providing a clear tactile feedback without gear-induced deterioration, and allows for a simpler configuration by integrating the operation element and stepping motor for switch operation.
Implementation Method 1
an elastic member that applies an elastic force in an axial direction of the rotating shaft to the stepping motor
Data Source
AI summary
A rotation operation device includes a stepping motor and an operation element. The stepping motor has a rotating shaft. The operation element is provided on the rotating shaft. The operation element also rotates the rotating shaft.