Driver Drill Change Ring for Mode and Clutch Torque Switching
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Solution Overview
Problem
Existing power tools require multiple components and complex mechanisms for mode switching and clutch operation torque switching, which complicates the design and operation.
Innovation Solution
A power tool design utilizing a single annular change ring to switch between mode movements and clutch operation torque, incorporating a sun gear, planetary gear, internal gear, and elastic members to control the clutch and vibration mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple components and complex mechanisms are used for mode switching and clutch operation torque switching, then the power tool can achieve multiple functions, but the design and operation becomes complicated
Solution Approach 1:
The patent combines mode switching and clutch operation torque switching into a single change ring mechanism. The change ring integrates multiple functional elements that can simultaneously control both the vibration mechanism mode and the clutch engagement torque, thereby reducing the number of separate components and simplifying the overall mechanism while maintaining multiple operational functions.
Solution Approach 2:
The change ring is designed as a universal component that performs multiple functions: it switches between vibration and non-vibration modes, adjusts clutch engagement torque levels, and coordinates the operation of different mechanical elements. This multi-functional design eliminates the need for separate dedicated components for each function, reducing complexity.
2Ease of operation
If multiple separate components are used for mode switching and clutch control, then each function can be independently controlled, but the overall operation becomes less efficient
Solution Approach 1:
By merging the control functions into a single change ring, the patent improves operational efficiency as the user can switch modes and adjust torque with one component rather than coordinating multiple separate controls. This integration reduces the cognitive and physical burden on the operator while maintaining independent control capabilities for each function through the unified mechanism.
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
Simplifies mode switching and clutch operation torque control, enhancing operational efficiency and ease of use by consolidating functionality within a single ring mechanism.
Implementation Method 1
an elastic member configured to urge the internal gear
Data Source
AI summary
A power tool allows mode switching and clutch operation torque switching using a single ring. An electric vibration driver drill includes an internal gear that meshes with planetary gears, an internal gear lock pin that moves forward relative to the internal gear to lock the internal gear, a first vibration cam fixed to a spindle, a second vibration cam that rubs against the first vibration cam and rotate relative to a gear housing, a vibration switch lever that moves forward relative to the second vibration cam to lock the second vibration cam in a nonrotatable manner, and an annular change ring that switches between forward movement and rearward movement of the internal gear lock pins and switches between forward movement and rearward movement of the vibration switch lever.