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Protection circuit and hardware electric tool

A technology for electric tools and protection circuits, applied in emergency protection circuit devices, manufacturing tools, metal processing equipment, etc., can solve the problems of inability to identify safety-sensitive parts, single function of protection circuit, single-state identification and drive lock, etc., to achieve improved safety effect

Pending Publication Date: 2020-09-22
NANJING INST OF MECHATRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the existing hardware electric tools such as angle grinders are used for operation, a protection circuit needs to be installed to prevent the armed police electric tools from starting and running at an inappropriate time and causing injury
The protection circuit of the existing hardware electric tools has a single function, and can only perform a single state identification and drive lock for parts such as switches or handles
Existing hardware electric tools cannot comprehensively identify the status of several safety-sensitive parts, and then realize the comprehensive control of tool operation

Method used

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  • Protection circuit and hardware electric tool
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Embodiment Construction

[0018] In order to make the purpose and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0019] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in general dictionaries should be...

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PUM

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Abstract

The invention discloses a protection circuit and a hardware electric tool. The protection circuit comprises a driving unit, a motor, an operation unit, an OR gate and the protection circuit, wherein the OR gate is connected to the input end of the driving unit; the protection circuit comprises a Hall element, a capacitor, a reverse protection circuit, a triode and a comparator, and is used for comprehensively protecting a plurality of safety sensitive points of the hardware electric tool and preventing the hardware electric tool from starting to operate when any one of the safety sensitive points has potential safety hazards, so the safety of the whole hardware electric tool is improved.

Description

technical field [0001] The invention relates to the field of hardware tools, in particular to a protection circuit and a hardware power tool. Background technique [0002] When the existing hardware power tools such as angle grinders are operated, it is necessary to set up a protection circuit to prevent the armed police power tools from starting and running at an inappropriate time and causing damage. The protection circuit of the existing hardware power tools has a single function, and can only perform a single state identification and drive locking for parts such as switches or handles. Existing hardware power tools cannot integrate the states of several safety-sensitive parts for unified identification, thereby realizing comprehensive control of tool operation. SUMMARY OF THE INVENTION [0003] Aiming at the deficiencies of the prior art, the present invention provides a protection circuit and a hardware electric tool, which can protect the hardware electric tool from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/08B24B23/02B24B55/00B25F5/00
CPCH02H7/0822H02H7/0805B25F5/00B24B23/028B24B55/00
Inventor 汪元奎杨阳
Owner NANJING INST OF MECHATRONIC TECH
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