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Self-braking electronic module of electric tools

A technology of automatic braking and electronic modules, applied in the direction of motor generator control, electric motor/converter plug, AC motor deceleration device, etc., can solve the problems of complex structure, unsafe, inconvenient, etc., and achieve small size, Low cost and light weight effect

Inactive Publication Date: 2006-12-06
全捷 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the braking devices used mainly include adding a reverse braking winding to the stator winding of the motor, or using a relay to reverse the braking. The former has a complex structure and high cost. Need to use another special switch to connect the external power supply, which is inconvenient and unsafe

Method used

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  • Self-braking electronic module of electric tools
  • Self-braking electronic module of electric tools
  • Self-braking electronic module of electric tools

Examples

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Embodiment Construction

[0009] Now, the present invention will be described in detail in conjunction with the embodiments shown in the accompanying drawings.

[0010] like figure 2 , 3 As shown, the power supply circuit I consists of a step-down capacitor C 1 Parallel resistance R 1 and by the rectifier diode D 1 -D 4 connected into a rectifier consisting of a C 1 , R 1 Connect one end of the parallel branch to the first input of the rectifier, C 1 , R 1 The other end of the parallel connection branch and the other input end of the rectifier are AC power input ends 5 and 6 respectively. The voltage stabilizing circuit II consists of a voltage stabilizing diode D connected in parallel to the output terminal of the rectifier 5 constitute. Isolation circuit III consists of diode D 6 Composition, D 6 Positive connection D 5 negative electrode. The energy storage circuit IV consists of a capacitor C 2 Composition, C 2 Positive connection D 6 Negative pole, negative pole connection D 5 p...

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Abstract

Characters of operating circuit of the disclosed automatic braking electronic module is composed of power supply circuit, voltage regulator circuit, isolation circuit, accumulation circuit, reverser, electronic switch, time delayer, current control switch, braking short circuit controller, and controller for positive and negative rotation of motor. In operation of electric tool, accumulation circuit also accumulates energy from the input AC power supply. In time of power turned-off and stopping operation of electric tool, energy accumulated in the accumulation circuit brake the tool automatically. Without need of special switch and mechanism, the invention possesses features of small size, lightweight, convenience, safety and reliable. The invention is suitable to tools of series excited machine with or without reverse winding.

Description

technical field [0001] The invention relates to a braking device of a series-excited motor, in particular to an electronic module for automatic braking of an electric tool. Background technique [0002] In order to ensure the safety of electric tools and improve work efficiency, electric tools are required to brake quickly after the power is turned off. At present, the braking devices used mainly include adding a reverse braking winding to the stator winding of the motor, or using a relay to reverse the braking. The former has a complex structure and high cost. It is inconvenient and unsafe to connect the external power supply with another special switch. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages, and provide a small volume, light weight, low cost and easy to use automatic braking electronic module for electric tools. [0004] In order to achieve the above invention, the technical solution of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P3/18H02P3/20
Inventor 全捷夏明秀全宏为
Owner 全捷
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