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Automatic changeover switch

An automatic conversion switch and action technology, which is applied to the power device and contact drive mechanism inside the switch, can solve the problems of loss of inertial energy, inability to complete the switch, and inability to drive the mechanism to cross the dead point, so as to improve the reliability of the action , Reduce the effect of installation requirements and action requirements

Pending Publication Date: 2019-05-03
CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the movement of the above mechanism, the power-off time of the coil must be precisely controlled. If the coil is powered off too early, the idler has not driven the mechanism to cross the dead point, and the spring has been released, so that the idler does not have enough energy to cross the dead point. The moving contact will fall back to the first position, and the switch from the first position to the second position cannot be completed
If the electromagnet is powered off too late, the idler will be pulled by the iron core to stop at the dead point and lose inertial energy, unable to drive the mechanism to pass the dead point

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 , the connecting device 4 is arranged between the connecting rod 2 and the electromagnet system 1 , the chute 41 is opened on the end of the connecting rod 2 connected with the electromagnet system 1 , and the hinge shaft 42 is arranged on the moving iron core 12 . The hinge shaft 42 can be fixed on the moving iron core 12 by means of riveting, etc., and the hinge shaft 42 can be a bearing.

[0037] In this embodiment, the first static contact 33 and the second static contact 34 are respectively arranged on two sides of the movable contact 31 . The drive rod 32 can be arranged in a disk shape, and its two different radial positions are respectively hinged to the connecting rod 2 and the movable contact 31, and the hinge point of the connecting rod 2 to the drive rod rotation center O1 of the disk-shaped drive rod 32 constitutes The first driving arm 322a, from the hinge point of the moving contact 31 to the driving rod rotation center O1 of the disk-sh...

Embodiment 2

[0040] See figure 2 , the connecting device 4 is arranged between the connecting rod 2 and the electromagnet system 1, the chute 41 is opened on the moving iron core 12 and extends along the moving direction of the moving iron core 12, and the hinge shaft 42 is arranged between the connecting rod 2 and the electromagnet. on one end of the System 1 connection.

Embodiment 3

[0042] See image 3 , the connecting device is arranged between the connecting rod 2 and the contact system 3 , the chute 41 is provided on the end of the connecting rod 2 connected with the driving rod 32 , and the hinge shaft 42 is arranged on the driving rod 32 .

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PUM

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Abstract

An automatic changeover switch comprises an electromagnet system, a contact system and a connecting rod system. The electromagnet system comprises a coil, a movable iron core, a fixed iron core and aspring. The contact system comprises first and second fixed contacts, a movable contact, and a driving rod that drives the movable contact to operate between first and second positions. The movable contact is in contact with the first fixed contact when at the first position, and is in contact with the second fixed contact when at the second position. When the coil is energized, the movable iron core moves to the position of the fixed iron core, enables the spring to store energy, and drives the driving rod to drive the movable contact away from the first position. When the coil is powered off, the spring releases energy to drive the driving rod to move the movable contact to the second position. The connecting rod system includes a connecting rod and a connecting device. The connecting device comprises a chute and an articulated shaft. The electromagnet system and the connecting rod and / or the driving rod and the connecting rod are connected by a connecting device. The automatic changeover switch improves the operational reliability of an operating mechanism, realizes a control method that powers off the coil just with time without a micro switch.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to an automatic transfer switch. Background technique [0002] The automatic transfer switch (English abbreviation: ATSE) is mainly but not absolutely used in the emergency power supply system. Another power supply, such as a switching device for a backup power supply (such as a self-generated power supply), ensures uninterrupted and continuous power supply to important loads, so that important loads can operate normally and reliably. In view of this, since ATSE is mostly used in important power supply places, the reliability of its automatic switching operation is very strict. [0003] As known in the industry: the automatic transfer switch uses the pull-in and release of the electromagnet by its operating mechanism, and uses the inertia of the idler (the idler is also called "spindle" (such as CN2842686Y)) to realize the conversion action of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/28H01H3/32H01H3/46
Inventor 顾怡文沈惠新丁晓辉
Owner CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)