Manual motor starter

A technology of starters and motors, which is applied in the field of electric power, can solve problems such as easy breakage of key parts, large impact force, and greater impact on the life of plastic parts, and achieve the effect of reducing the operating force of the handle, reducing the impact of damage, and good control performance

Active Publication Date: 2012-09-19
SHANGHAI NOARK ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) The operating force is too large, it is difficult to twist the handle manually, and the handle of the prototype product is twisted.
[0010] (2) Key parts are easy to break
In the process of opening and closing, the impact force of the mechanism is large, which has a great impact on the life of plastic parts
The plastic parts are subject to a large impact force, which is easy to break and the mechanism fails

Method used

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0037] Such as Figure 4 , Figure 5 As shown, a manual motor starter includes a rotating control mechanism 100 , an operating mechanism 200 , a pressure plate 300 , and a contact system 400 . The operating mechanism 200 includes a rod-shaped rocker 210 and a four-bar linkage 220. One end of the rod-shaped rocker 210 is connected to the control mechanism 100, the other end is connected to one end of the four-bar linkage 220, and the other end of the four-bar linkage 220 is connected to the control mechanism 100. The pressure plate 300 is connected, and the pressure plate 300 is connected with the contact system 400. Driven by the operating mechanism 200, the pressure plate 300 rotates around a fixed shaft at one end, and the other end moves up and down to cooperate with the contact system 400 to realize the moving contact 420 The action to p...

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PUM

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Abstract

The invention relates to a manual motor starter, comprising a rotary control mechanism, an operating mechanism, a press plate and a contact system, wherein the operating mechanism comprises a rod-shaped operating crank and a four-bar mechanism, one end of the rod-shaped operating crank is connected with the control mechanism, the other end of the rod-shaped operating crank is fixedly connected with one end of the four-bar mechanism, the other end of the four-bar mechanism is connected with the press plate, the press plate rotates around a fixing shaft at one end of the press plate under the action of the operating system, the other end of the press plate is connected with the contact system and is matched with the contact system to realize a switching-on / off operation of a movable / fixed contact. The manual motor starter disclosed by the invention has the advantages of small impaction force, labor-saving operation, simple structure and small breakage on devices, avoids impaction of discontinuous contact in a hopping process, reduces the influence of an impaction force on breakage of key components when a mechanism switches on or off, and prolongs the service life of the mechanism.

Description

technical field [0001] The invention relates to the field of electric power, and more specifically, relates to a manual motor starter. Background technique [0002] Usually, the manual motor starter is used as a switching device. When the circuit generates abnormal current, such as power shortage, short circuit, overload, etc., the manual motor starter will automatically disconnect the power supply of the motor to realize the protection of the motor. [0003] The manual motor starter is provided with a detection part for detecting fault current, a switch mechanism responding to the detection signal from the detection, a contact part interlocked with the operation of the switch mechanism to open or close the current path, and a To eliminate the arc extinguishing part that generates an arc when the contacts of the contact part are opened. [0004] As is well known in the art, a manual motor starter includes a detection section for detecting the generation of an accidental cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
Inventor 张军化胡吉庆李伟乔晓玲
Owner SHANGHAI NOARK ELECTRIC
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