Rotatable contact structure of direct-current electromagnetic relay
A technology of electromagnetic relay and contact structure, applied in the direction of electromagnetic relay, electromagnetic relay details, relay, etc., can solve the problems of troublesome production, shortened electrical life, small breaking power, etc.
Active Publication Date: 2016-04-13
中国电子科技集团公司第四十研究所
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Problems solved by technology
The main disadvantage of the existing DC relay (contactor) is that the breaking power is small, and its electrical life will be shortened when the breaking power is increased. To achieve the purpose of improving the electrical life, these methods need to greatly change the structure of the existing DC electromagnetic relay, which is troublesome to manufacture and high in cost
Method used
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Embodiment Construction
[0010] Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:
[0011] DC electromagnetic relay rotatable contact structure, such as figure 1 As shown, it includes a static contact 1, a moving contact plate 2 and a transmission shaft 3. The static contact 1 is a split type, including a lead-out end 11 and a contact end 12. The material of the lead-out end 11 is TU1, and the material of the contact end 12 is The material is molybdenum, the lower part of the leading end is hemispherical, the top of the contact end 12 is provided with a positioning recess, the lower end of the leading end 11 is stuck in the positioning recess, and is welded with the contact end 12; the moving contact plate 2 passes through the insulating support seat 5 and the stopper 4 Fixed on the upper end of the transmission shaft 3, the upper end of the insulating support seat 5 has a boss 51, the movable contact disc 2 is set on the boss 51, the inn...
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A rotatable contact structure of a direct-current electromagnetic relay comprises stationary contacts, a movable contact disc and a drive shaft, wherein the lower potions of the stationary contacts are contact ends, the upper portions of the stationary contacts are leading-out ends, the leading-out ends are made from TU1, the contact ends are made from molybdenum, the leading-out ends are welded at the upper portions of the contact ends, and the lower portions of the contact ends are semi-spherical. The movable contact disc is fixed to the upper end of the drive shaft through an insulation supporting seat and a stop block and is disc-shaped, and a gap is formed between the movable contact disc and the drive shaft. The movable contact disc rotates due to vibration after the movable contact disc breaks away from the stationary contacts by designing the stationary contact to be split, designing the contact between the stationary contacts and the movable contact disc to be point contact, it is ensured that contact points are different during on and off each time, accordingly electric arcs are prevented from being stacked on the same contact point, the electrical endurance of high breaking power is prolonged exponentially, and the rotatable contact structure is simple in manufacture and low in cost.
Description
technical field [0001] The invention relates to an electromagnetic relay, in particular to a rotatable contact structure of a DC electromagnetic relay. Background technique [0002] DC electromagnetic relays (contactors) are widely used in military, civilian and other fields. With the development of science and technology, especially the rapid development of new energy vehicles, higher index requirements (high voltage, high current, high electrical life, high safety, high reliability, etc.). The main disadvantage of the existing DC relay (contactor) is that the breaking power is small, and its electrical life will be shortened when the breaking power is increased. To achieve the purpose of improving the electrical life, these methods all need to greatly change the structure of the existing DC electromagnetic relay, which is troublesome to manufacture and high in cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to pro...
Claims
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CPCH01H50/546
Inventor 王小虎
Owner 中国电子科技集团公司第四十研究所