Driver Drill Clutch Ring for Easier Torque Mode Switching
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Solution Overview
Problem
Existing electric driver drills lack high operability in changing operation modes and release values for the clutch assembly, leading to inefficiencies in mode switching and torque control.
Innovation Solution
An electric driver drill design incorporating a motor, spindle, clutch assembly with an elastic member, and a change ring that adjusts the clutch assembly's operation mode and release value by deforming elastically in response to rotation direction changes, allowing seamless transitions between clutch, drill, and vibration drill modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a change ring is operated to switch between clutch mode and nonclutch mode, then the operation mode can be changed, but the release value adjustment becomes complex and difficult to operate
Solution Approach 1:
The patent combines the mode switching function and release value adjustment function into a single change ring operation. By integrating both functions into one operational mechanism, the user can switch between clutch mode/nonclutch mode and adjust release values without requiring separate controls, thereby improving ease of operation while maintaining adaptability.
Solution Approach 2:
The change ring is designed to perform multiple functions: it switches operation modes (clutch mode vs. nonclutch mode) and simultaneously adjusts the release value of the clutch assembly. This multi-functional design eliminates the need for separate mechanisms, making the device easier to operate while preserving full adaptability across different drilling conditions.
2Measurement precision
If the elastic member is designed to adjust the release value, then torque control precision is improved, but the device complexity increases
Solution Approach 1:
The elastic member automatically adjusts the release value based on the operational requirements without requiring external intervention or complex control systems. The elastic deformation of the member provides inherent feedback and adjustment, achieving precise torque control through self-regulating mechanical properties rather than complex electronic or mechanical control systems.
Solution Approach 2:
The patent uses elastic deformation to dynamically change the mechanical parameters of the clutch assembly. By utilizing the elastic properties of the member, the release value can be adjusted through controlled deformation, achieving precise torque control through material property changes rather than complex structural modifications.
3Adaptability or versatility
If the change ring operates in multiple rotation directions, then functionality is enhanced, but the ease of operation decreases
Solution Approach 1:
The patent employs bidirectional rotation of the change ring where forward rotation performs one function (e.g., mode switching) and backward rotation performs another function (e.g., release value adjustment). This inversion principle allows the same component to provide multiple functions while maintaining operational simplicity through intuitive directional control that users can easily distinguish and execute.
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 high operability in changing operation modes and release values, enhancing torque control and efficiency in mode switching, thereby improving the overall performance of the electric driver drill.
Implementation Method 1
the elastic member elastically deforms to reduce the release value in response to the change ring being operated in the forward rotation direction, and elastically deforms to increase the release value in response to the change ring being operated in a backward rotation direction
Data Source
AI summary
The drill includes a motor, a spindle rotatable with a rotational force transmitted from the motor, a clutch assembly that disables transmission of the rotational force to the spindle in response to a rotational load on the spindle reaching a release value and including an elastic member that adjusts the release value, and a change ring switchable from a clutch mode in which the clutch assembly is operable to a nonclutch mode in which the clutch assembly is inoperable in response to the change ring operated in a forward rotation direction. In the clutch mode, the elastic member elastically deforms to reduce the release value in response to the change ring operated in the forward rotation direction, and to increase the release value in response to the change ring operated in a backward rotation direction.