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a contactor

A contactor, contact state technology, applied in the direction of contacts, relays, capacitors, etc., can solve problems such as power consumption of contactor coils

Inactive Publication Date: 2016-05-18
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, during the static period when the NO type electromagnetic contactor maintains its closed state, there is always power consumption in the contactor coil

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0074] The most basic implementation of the present invention is shown in the first embodiment. In this embodiment, the contactor uses an electrostatic latch as the holding part, Figure 2a and Figure 2b The structure and working principle of the holding part in the contactor are shown.

[0075] Electrostatic latch 21 is formed a capacitive structure by parallel two capacitive plates 22 and 23, and wherein capacitive plate 22 comprises plastic plate 201 and is attached to the electrode 203 on plastic plate 201, and capacitive plate 23 comprises plastic plate 202 and is attached to plastic plate 202 electrode 204 on. In order to maintain insulation when the electrodes are attracted to each other, a very thin non-conductive insulating film (not shown in the figure) is attached to the sides of the electrodes 203 and 204 facing each other.

[0076] When charging the two capacitive plates 22 and the capacitive plates 23 of the electrostatic lock, the electrodes 203 and the elec...

no. 2 approach

[0079] As described in the first embodiment, when the two capacitive plates of the electrostatic latch are attached to each other to realize the closure of the electrostatic latch, the distance between the two electrodes is only the thickness of two layers of non-conductive films. If a hard, thick metal plate, such as an aluminum plate, is used to form the electrode for electrostatic locking, even when the surface of the electrode is slightly rough or attached to a small object, the distance between the electrodes near the rough position or the attachment position will be greatly increased. increase, thereby affecting the closure of the electrostatic latch. Therefore, on the basis of the first embodiment, this embodiment uses a flexible metal thin film, such as a copper film or an aluminum film, to form an electrode for electrostatic blocking. Specifically, a flexible metal film may be used as an electrode of one of the capacitive plates, or a flexible metal film may be used a...

no. 3 approach

[0082] As described in the second embodiment, the flexible metal film can be directly disposed on the two opposite capacitor plates as electrodes for electrostatic blocking. But at the same time, such flexible electrodes are likely to be affected by the peeling effect. That is to say, when part of the surface area of ​​the two flexible electrodes is not fully attached, the area around this area will also be gradually separated due to the peeling force generated by the peeling effect, until the two flexible electrodes are completely separated. Such as image 3 As shown, the area 303 is the part where the flexible electrodes 301 and 302 are closely attached, but the area 304 at the edge thereof is not completely attached. If electrode 301 and electrode 302 are separated at region 304, this separation will propagate to region 303, which is adjacent to region 304 and closely fit, at this moment even a small peeling force will make electrode 301 and electrode 302 gradually separat...

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PUM

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Abstract

The present invention provides a contactor, including the contact part and the incentive part, which also includes the maintenance part, which includes the capacitor structure, and uses the static power between the relative capacitor boards of the capacitor structure to maintainThe contact part is in contact or disconnected state.Through the technical solution of the present invention, the static electricity generated by static locks is used to maintain the static state after switching. Compared with the traditional electromagnetic contactor, the energy consumption in this static state is greatly reduced, and the invention is used in the present inventionThe static lock is easy to manufacture, and the cost is low.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to a contactor. Background technique [0002] In the industrial field, a contactor is a common electrical device that can control the on-off of a high-voltage / current supply through a low-voltage / current control signal. Contactors are widely used in the industrial field to provide control of electrical loads such as motors, lighting equipment, heating equipment, capacitor banks, etc. In these applications, the function of the contactor is usually to repeatedly make and break the load power line. [0003] Contactors generally include normally open (Normal Open, NO) type and normally closed (Normal Close, NC) type. Below we combine the NO contactor to introduce the basic structure of the contactor. A NO type contactor may generally include a contact portion and an excitation portion. The contact part is the part of the contactor that carries the load current. It is generally ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H53/02
CPCH01G5/145H01H50/32H01H50/42H01H50/546H01H51/10H01H2001/0063H01H53/02
Inventor 李明冈瑟·谢特尔
Owner SIEMENS AG