Electric Tool Control Lock for One-Handed Walking and Working
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Solution Overview
Problem
Existing self-propelled snow throwers require operators to use both hands to control walking and working functions, leading to inefficiencies and inconvenience when adjusting speed, direction, or snow throwing angle, as either the snow thrower stops moving or the snow collecting device halts.
Innovation Solution
An electric tool with a walking unit and a working unit, each equipped with a control assembly and switch assembly, allows for simultaneous control of both units with a lock signal, enabling one-handed operation of both units while allowing the other hand to control other functions without stopping the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If both hands are used to control walking and working functions separately, then each function can be controlled independently, but the operation efficiency decreases and the machine must stop when adjustments are needed
Solution Approach 1:
The patent merges the control of walking assembly and working assembly into a single control assembly. When the switch assembly is in the first state, the control assembly simultaneously controls both the walking assembly and working assembly, allowing one-handed operation. This merging eliminates the need to switch between two separate control assemblies and enables continuous operation without stopping the machine.
Solution Approach 2:
The control assembly is designed with multi-functionality to perform different control tasks based on the state of the switch assembly. In the first state, it controls both walking and working assemblies simultaneously; in the second state, it controls only the working assembly. This universal design allows a single control assembly to replace two separate control assemblies, improving operational efficiency.
2Adaptability or versatility
If separate control assemblies are used for walking and working functions, then each assembly can be controlled independently, but the device complexity increases
Solution Approach 1:
The patent combines two separate control assemblies into one unified control assembly that can perform both walking control and working control functions. The control assembly includes a motor controller that can drive both the walking motor and working motor, reducing the number of components and simplifying the control system while maintaining independent control capability through the switch assembly.
Solution Approach 2:
The control assembly is designed as a universal controller that can adapt to different control modes based on the switch assembly position. It includes control circuits that can independently or simultaneously control the walking assembly and working assembly, providing adaptability without requiring separate dedicated control systems for each function.
Data Source
AI summary
The present disclosure provides an electric tool and a control method thereof. The electric tool comprises a walking unit and a working unit, wherein the walking unit comprises a walking assembly, a walking control assembly, and a walking switch assembly; the working unit comprises a working assembly, a working control assembly, and a working switch assembly; when at least one of the walking switch assembly and the working switch assembly is turned on, at least one of the walking control assembly and the working control assembly receives a lock signal; and when the walking switch assembly and the working switch assembly are both turned on, and then the switch assembly corresponding to the control assembly that receives the lock signal remains on, at that time the control assembly that receives the lock signal simultaneously controls the walking assembly and the working assembly to work.