Load terminal of high-voltage direct current (DC) relay

A load terminal, high-voltage direct current technology, applied in the direction of relays, electromagnetic relays, detailed information of electromagnetic relays, etc., can solve problems such as brazing failure, load terminal slippage, and connection end drop-off, so as to reduce serious heat generation and improve use reliability , to ensure the effect of verticality
CN109786178APending Publication Date: 2019-05-21XIAMEN HONGFA ELECTRIC POWER CONTROLS
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
XIAMEN HONGFA ELECTRIC POWER CONTROLS
Publication Date
2019-05-21

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Abstract

The invention discloses a load terminal of a high-voltage direct current (DC) relay. The relay comprises connecting ends, and leading-out ends arranged on a ceramic relay cover, wherein a step hole isformed in the head of each leading-out end; a step part is formed at the lower part of each connecting end, and can be adaptively inserted into the corresponding step hole; the step holes are connected with the corresponding step parts through thread fit; a brazing layer, through which each leading-out end can be connected with the corresponding connecting end, is arranged between matched step surfaces of the corresponding step hole and the corresponding step part; and double-connection structures for preventing the connecting ends from loosening and dropping are formed through the thread fitconnection between the step holes and the step parts and the brazed connection between the matched step surfaces of the step holes and the step parts. The load terminal disclosed by the invention hasthe advantages that the maximum torque bearable by the connecting ends is larger; and the double-connection structures for preventing the connecting ends from loosening and dropping are formed through the thread fit connection between the step holes and the step parts and the brazed connection between the matched step surfaces of the step holes and the step parts, so that the connecting ends canbe prevented from dropping when the brazing layers fail, and high use reliability can be further achieved.
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Description

technical field

[0001] The invention relates to the technical field of high voltage direct current relays, in particular to a load terminal of a high voltage direct current relay. Background technique

[0002] At present, the load terminals of high-voltage DC relays on the market mainly have the following structures: 1. The lead-out end made of oxygen-free copper is directly turned into an external thread form to form an external thread connection end, and the lead-out end needs to be brazed to the ceramic cover of the relay during production. In fact, when the oxygen-free copper hardness is reduced after high-temperature brazing, the maximum torque that the external thread connection end can bear decreases, and the torque requirement cannot be met in practical applications, resulting in the load terminal slipping or breaking, and shortening the relay. service life. 2. The lead-out end and the screw made of oxygen-free copper are fixed with thread glue. Because the temperat...

Claims

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