Method for improving high power relay load capability

A technology of high-power relays and load capacity, applied in the direction of relays, electromagnetic relays, detailed information of electromagnetic relays, etc., can solve problems such as increasing the electromagnetic attraction force of the electromagnetic system, increasing the contact pressure between contacts, and speeding up the switching speed of contacts. To achieve the effect of improving the mechanical properties of the environment

Inactive Publication Date: 2008-06-18
GUIZHOU SPACE APPLIANCE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In all the above-mentioned conventional measures, increasing the contact pressure between the contacts, accelerating the switching speed of the contacts, and increasing the gap when the contacts are disconnected all need to greatly increase the electromagnetic attraction of the electromagnetic system; increasing the contact The contact area and volume of the point will increase the weight of the contact, reduce the natural vibration frequency of the contact system, and affect the environmental mechanical properties of the whole relay
Therefore, the above-mentioned measures to improve the load capacity of high-power relays can no longer fully meet the increasingly higher load requirements put forward by the current application field of relays.

Method used

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Embodiment Construction

[0012] The method for improving the load capacity of the high-power relay in the present invention is as follows: starting from the structure of the contact part of the relay, the material and external dimensions of the contact are the same as those of the conventional contact, and the through mesh is added on the contact surface of the contact , the size and quantity of the mesh can be designed according to the overall size of the contact to ensure the current carrying area of ​​the contact is appropriate.

[0013] After adopting the method of the present invention to make the contacts of the relay, the relay will form multiple contacts at different positions of the contacts during the process of switching the load, which is equivalent to forming multiple contact pairs. During the process of disconnecting the load, the contacts The arc between them will be evenly distributed in multiple contact pairs, so that the arc on each contact pair will be greatly weakened, and at the sa...

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Abstract

The invention discloses a method for enhancing the load capability of a big power relay. The method is that through meshes are additionally arranged on the contact surface of a contact part of the relay, and the quantity of the meshes additionally arranged on the contact surface is determined according to the size of the contact. A relay produced by adopting the method of the invention has the advantages of speeding up the electric arc extinction between contacts of the relay, accelerating heat dissipation of the relay contacts and improving the environmental mechanics property of a contact system of the relay, therefore the load capability of the relay can be enhanced. The invention is suitable for the manufacturing of the great load relay.

Description

1. Technical field [0001] The invention relates to a method for improving the load capacity of a high-power relay, which belongs to the technical field of relays. 2. Background technology [0002] A relay is an automatic electrical switch, and an electromagnetic relay is a component that drives a contact system to switch loads by converting input electrical energy into mechanical energy. The structure of an electromagnetic relay is generally composed of an electromagnetic system, a contact system and an outer cover. The electromagnetic system is a mechanism that converts electrical signals into mechanical signals, and the contact system is a structure that switches loads through the electromagnetic attraction of the electromagnetic system. [0003] In high-power relays, the contact system generally adopts the form of riveted contacts on the contact reed, in which the ability of the contact to switch the load represents the ability of the relay to switch the load, and the wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H50/54
Inventor 王凌志
Owner GUIZHOU SPACE APPLIANCE CO LTD
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