Electric Drill Switch Lock Structure to Prevent Accidental Start
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Solution Overview
Problem
Conventional gasoline-powered ground drills cause operator discomfort due to vibration and noise, and pose safety and environmental concerns, while existing electric drills lack adequate safety features to prevent accidental activation.
Innovation Solution
An electric drill with a self-locking button mechanism that requires simultaneous activation of the switch and self-locking button to start the drill, incorporating a pivotable switch assembly with a self-locking button and reset elastic elements to ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a normal switch button structure is used, then the operation is convenient, but the safety issue of inadvertent actuation occurs
Solution Approach 1:
The switch assembly is segmented into multiple functional components: a switch body, a self-locking button, and a reset elastic element. The self-locking button acts as an independent safety component that must be engaged separately from the main switch, dividing the activation function into distinct steps to prevent accidental operation while maintaining ease of use through clear tactile feedback
Solution Approach 2:
The self-locking button requires preliminary action before the drill can be activated. The button must be pressed first to engage the switching contact, and only then can the main switch be operated to start the drill. This preliminary safety action ensures intentional activation while the reset elastic element automatically returns the button to its initial state after use
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
Enhances safety performance by ensuring the drill can only be activated intentionally, reducing the risk of accidental start-ups and improving user safety.
Implementation Method 1
a self-locking button reset elastic element for resetting the self-locking button, and wherein one end of the self-locking button reset elastic element abuts against the self-locking button, and the other end thereof abuts against the handle
Implementation Method 2
the switch assembly comprises a switch reset elastic element for resetting the switch, and wherein one end of the switch reset elastic element abuts against the handle and the other end thereof abuts against the switch
Data Source
AI summary
The invention provides an electric drill including a bracket with a handle, a drill rod, a motor assembly, and a switch assembly. The switch assembly includes a first micro switch configured to activate or deactivate the motor assembly, a switch pivotably mounted on the handle through a pivot and cooperating with the first micro switch, and a self-locking button engaged with the switch and configured as: when the self-locking button is in a first state, the self-locking button abuts against the switch to prevent the switch from rotating around the pivot; when the self-locking button is in a second state, the self-locking button is disengaged with the switch, and the switch can rotate around the pivot.