Manual maintenance switch

Abstract

The invention discloses a manual maintenance switch. The switch comprises a plug and a socket which can be used through matching, wherein the plug comprises a shell body, a fuse and a handle; the fuse is installed in the shell body, and power contact pins are locked on two sides of the fuse; a shell body limiting groove equipped with a secondary locking plate is formed in the shell body, and a nut insert hole of the shell body is connected to a lower cover which is equipped with a high-voltage interlocking contact pin by a connecting part; a ring spring insertion hole assembly equipped with a torque reinforcing function and a hands-off electric shock function is installed in a box body of the socket; a base body equipped with a high-voltage interlocking insertion hole is disposed in the box body, and contact pair insertion holes used for insertion and sleeving of signal contact pair pins are disposed in the base body; and an elastic plate used to clamp the handle is disposed on the box body, and spindles matched with handle guide rails are disposed on both sides of the box body. The manual maintenance switch has the advantages that dynamic system performance of a large passenger car can be improved; locking is reliable; the level of protection is high; and safety performance is good.

Description

technical field [0001] The invention relates to the field of electrical connectors, in particular to a manual maintenance switch. Background technique [0002] With the rapid advancement of science and technology and the improvement of people's living standards, automobiles have become a means of transportation for more and more people; and from the perspective of economy and environmental protection, electric vehicles have become a major development trend; Most of the manual maintenance switches in the field of high current transmission are designed and produced by foreign companies. Although the products designed and produced by a small number of domestic companies can basically meet the use of overcurrent protection and breaking, they cannot meet the increasing demand for products in this field. security requirements. [0003] At present, the rated working voltage of manual maintenance switches used in the field of electric vehicle high current transmission is all ≯ 800V...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of science and technology and the improvement of people's living standards, automobiles have become a means of transportation for more and more people; and from the perspective of economy and environmental protection, electric vehicles have become a major development trend; and for electric vehicles Most of the manual maintenance switches in the field of high-current transmission are designed and produced by foreign companies. Although the products designed and produced by a small number of domestic companies can basically meet the use of over-current protection and breaking, they cannot meet the increasingly high demand for overall products in this field. security requirements

[0003] At present, the rated operating voltage of the manual maintenance switch used in the field of high-current transmission of electric vehicles is ≯800V.DC. However, in order to improve the performance of the power system of the vehicle, the large passenger vehicle industry urgently needs a rated operating voltage of about 1000V.DC. Manual maintenance switch; and the manual maintenance switch used in electric vehicles works under the condition of high voltage, so there will be higher requirements for its installation, operation and use; at present, the manual maintenance switches in the prior art all have locking structures Simple, unreliable locking, and poor anti-locking torque; at the same time, it cannot prevent hand electric shock, and the safety factor is low

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