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Auxiliary contact terminal group

A technology of auxiliary contact group and circuit board, which is applied in the directions of electromagnetic relay details, relays, electrical components, etc., can solve the problems of increased contact resistance, weak recognition ability of weak current signals, and incompatibility with weak current equipment and facilities.

Inactive Publication Date: 2017-01-04
ZHEJIANG ZHAOZHENG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the auxiliary contact group of the traditional AC contactor usually adopts the contact method of the contact type. The contact type is suitable for the identification of strong electric signals, but the resistance between the contact type contacts is relatively large. With the passage of time, the contacts will be oxidized and dust may stick, and the contact resistance will become much larger. The ability to identify weak current signals of 5V or 5mA is weak, and it is not suitable for weak current equipment and facilities. However, with the development of society and the improvement of equipment, Improvements, the extensive use of industrial computers and PLCs, and the wider application of weak current signals, the capture and identification of weak current signals have become more important

Method used

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Embodiment Construction

[0032] Depend on Figure 1 to Figure 7 It can be seen that the present invention discloses an auxiliary contact group, including a housing 1, a bracket 2 and a circuit board 3. The housing 1 is rectangular in shape as a whole, including an upper housing 11 and a lower housing 12. The circuit board 3 In the housing 1, two wiring frames 34 are arranged symmetrically on the circuit board 3, and two wiring terminals are respectively arranged in each wiring box 34, and the two wiring terminals in the wiring box 34 pass through the first dry spring respectively. The tube 321 and the second reed switch 322 are connected to the wiring terminals in the corresponding wiring frame 34, and the wiring frame 34 is also provided with a tightening screw 341, and the lower housing 12 is provided with a wiring port 122 at a corresponding position of the wiring frame 34. and the screw tightening port 121, it is not easy to cause the circuit to loosen by tightening the screws, so as to ensure the...

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Abstract

The invention discloses an auxiliary contact terminal group. The auxiliary contact terminal group comprises a shell, a support and a circuit board, wherein the circuit board is arranged in the shell, the circuit board is provided with at least one pair of connecting terminals, the support is matched with the shell in a sliding manner, each pair of connecting terminals is connected by virtue of a reed pipe, and the support is provided with a permanent magnet for controlling the connection and disconnection of the reed pipe when the support slides. The auxiliary contact terminal group is simple and reasonable in structure and capable of effectively receiving a weak electric signal.

Description

technical field [0001] The invention relates to an AC contactor switch assembly, in particular to an auxiliary contact group of the AC contactor. Background technique [0002] The AC contactor can quickly cut off the AC circuit, and can frequently connect the circuit device controlled by the large current. The AC contactor is widely used to control electric loads such as motors, factory equipment, electric heaters, working machines and various store units. Moreover, the AC contactor also has the function of low-voltage release protection, which is an important component in the automatic control system, and the auxiliary contact group is used to turn on and off the small current control circuit to realize the self-locking and interlocking of the contactor. Functions such as state transfer, and control of other circuits that require simultaneous. However, the auxiliary contact group of the traditional AC contactor usually adopts the contact method of the contact type. The con...

Claims

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Application Information

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IPC IPC(8): H01H50/62
CPCH01H50/62
Inventor 张奇建张华兵
Owner ZHEJIANG ZHAOZHENG ELECTROMECHANICAL
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