Structure of electric screwdriver arrested by non-contact electromagnetic induction

An electric screwdriver and electromagnetic induction technology, applied in the direction of electrical components, electronic switches, motor tools, etc., can solve the problems of high parts processing requirements, poor reliability, short life, etc., to achieve reliable operation, high signal acquisition accuracy, The effect of simplifying the effect

Inactive Publication Date: 2008-12-31
常熟市东联电器制造有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chinese patent CN2815620Y discloses a non-contact electromagnetic induction start-up electric screwdriver structure (this patent was proposed by the applicant to the Patent Office on August 10, 2005), which is a combination of the known electric screwdriver lever or push-type The starting method is to control the action of the electric screwdriver by closing or opening the mechanical switch contact, and change it to non-contact electromagnetic induction start to reflect the action or not, thereby overcoming the known electric screwdriver with complex structure, short life and poor reliability. lack of
It is precisely based on the above prejudice that the service life of the braking device 3 cannot match the service life of the starting device (the improved lever-type starting device 1 and the push-type starting device 2), and also caused the overall failure of the electric screwdriver. Reasons for complex structure, high processing requirements for parts and poor reliability

Method used

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  • Structure of electric screwdriver arrested by non-contact electromagnetic induction
  • Structure of electric screwdriver arrested by non-contact electromagnetic induction
  • Structure of electric screwdriver arrested by non-contact electromagnetic induction

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Embodiment Construction

[0018] Through the following description, the technical essence of the present invention will be more clearly understood, and the advantages and effects of the present invention will become clearer. However, the examples should not be regarded as limitations on the solutions of the present invention.

[0019] please see figure 1 and figure 2 as well as image 3 As an electric screwdriver, it is the same as the prior art such as CN2851620Y mentioned above, and also includes a housing 6, and the housing 6 is usually molded by plastic, and the preferred material installed in the shell cavity of the housing 6 is metal Such as the middle sleeve 4 made of aluminum alloy, a power transmission device 5 is arranged in the sleeve cavity of the middle sleeve 4, and the power transmission device 5 at least includes a motor 51, a deceleration assembly 52, an intermediate shaft 53, a transmission bowl 54, a camshaft 55, and a cone. Shaped disc 56. A missing portion is formed on the out...

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Abstract

A non-contact electric screwdriver able to be braked by electromagnetic induction is composed of shell, intermediate sleeve, power drive unit with motor and its drive circuit, and an electromagnetic induction brake unit with a signal output connected to the input of said motor drive circuit.

Description

technical field [0001] The invention belongs to the technical field of electric tools, and in particular relates to an improvement of a braking mechanism of an electric screwdriver. The electric screwdriver realizes non-contact electromagnetic induction braking of the electric screwdriver by using a sensor displacement detection mechanism. Background technique [0002] Chinese patent CN2815620Y discloses a non-contact electromagnetic induction start-up electric screwdriver structure (this patent was proposed by the applicant to the Patent Office on August 10, 2005), which is a combination of the known electric screwdriver lever or push-type The starting method is to control the action of the electric screwdriver by closing or opening the mechanical switch contact, and change it to non-contact electromagnetic induction start to reflect the action or not, thereby overcoming the known electric screwdriver with complex structure, short life and poor reliability. lack of. Specif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B21/00H03K17/95
Inventor 朱文通
Owner 常熟市东联电器制造有限责任公司
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