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Control device of small and special electrical machine

A micro-motor and control device technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve the problems of unsafe electric tools, unsatisfactory protection effect, personal injury, etc., to avoid accidental injuries , Simple structure, safe to use

Pending Publication Date: 2018-09-28
NINGBO HANPU TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, during the use of some electric tool products using micro-special motors, when the operator accidentally presses the mechanical switch first and then turns on the power supply of the battery pack, the micro-special motor will immediately drive the tool head to run. For electric grinders, Angle grinders, electric drills and other electric tools are unsafe once they are accidentally started and operated according to the above method. If the operator does not take precautions, it may immediately cause personal injury. At present, simple protection is usually carried out on the mechanical structure, and the protection effect is not good. ideal

Method used

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  • Control device of small and special electrical machine
  • Control device of small and special electrical machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: A control device for a micro motor, including a control module, a protection signal detection module 1, a mechanical switch 2, a battery pack 3, a power switch module 4 and a motor drive module 5, and the control module includes a switch signal detection module 6 and Determination module 7, one end of mechanical switch 2, the input end of protection signal detection module 1 and the input end of power switch module 4 are connected, one end of mechanical switch 2 is used to connect with the output end of battery pack 3, and the input end of protection signal detection module 1 The ground terminal and the ground terminal of the power switch module 4 are all grounded, the output terminal of the protection signal detection module 1 is connected to the input terminal of the judgment module 7, and the other end of the mechanical switch 2 is respectively connected to the control terminal of the power switch module 4 and the switch signal detection module 6 is conn...

Embodiment 2

[0011] Embodiment 2: The remaining parts are the same as Embodiment 1, the difference is that the protection signal detection circuit includes a first capacitor C1, a first resistor R1, a second resistor R2 and a first diode D1, and one end of the first capacitor C1 One end of the mechanical switch 2 is connected, the other end of the first capacitor C1, one end of the first resistor R1 and the cathode of the first diode D1 are connected, the other end of the first resistor R1, the input end of the determination module 7 and the second One end of the resistor R2 is connected, and the other end of the second resistor R2 and the anode of the first diode D1 are both grounded.

[0012] The protection principle of the control device using the above circuit structure is as follows: when the battery pack 3 is connected, the output end of the protection signal detection module 1 generates a continuous signal with a set duration and a high level state, and when the determination module ...

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Abstract

The invention discloses a control device of a small and special electrical machine. The control device comprises a control module, a protecting signal detecting module, a mechanical switch, a batterypack, a power switch module and a motor drive module and is characterized in that the control module comprises a switch signal detecting module and a judging module. The control device has the advantages that when the judging module judges that the starting manner is dangerous, the judging module does not output a starting control signal to an electric machine drive module, and an electric machinecannot be started so as to protect the safety of an operator; when the judging module judges that the starting manner is safe, the judging module outputs the starting control signal to the electric machine drive module, the electric machine drive module drives the electric machine to start normally, and accordingly accidental human body injury caused by an electric tool using the small and special electrical machine during abnormal energization can be reliably avoided, and use safety is achieved; the control device is simple in overall structure and low in cost.

Description

technical field [0001] The invention relates to a motor control system, in particular to a control device for a micro motor. Background technique [0002] At present, during the use of some electric tool products using micro-special motors, when the operator accidentally presses the mechanical switch first and then turns on the power supply of the battery pack, the micro-special motor will immediately drive the tool head to run. For electric grinders, Angle grinders, electric drills and other electric tools are unsafe once they are accidentally started and operated according to the above method. If the operator does not take precautions, it may immediately cause personal injury. At present, simple protection is usually carried out on the mechanical structure, and the protection effect is not good. ideal. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a control device for a micro-motor that can effectively disco...

Claims

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Application Information

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IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 陈会甫陈登峰
Owner NINGBO HANPU TOOLS