Low bounce, low contact resistance contact structure
A technology with low contact resistance and contacts, applied in circuits, electrical switches, electrical components, etc., can solve the problems of large loop resistance, rigid bounce of the contact structure, affecting breaking performance, etc., to achieve small bounce and reduce The effect of closing bounce and reducing loop resistance
Active Publication Date: 2015-10-28
中国振华电子集团宇光电工有限公司(国营第七七一厂)
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Problems solved by technology
[0003] The purpose of the present invention is to provide a contact structure with low bouncing and low contact resistance, which solves the problem that the contact structure currently used has a large loop resistance. During the closing process, the contact structure is prone to rigid bouncing, which affects its The problem of breaking performance
Method used
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Embodiment Construction
[0011] Embodiment of the present invention: a low bounce, low contact resistance contact structure, as attached figure 1 As shown, it includes a contact 1, a contact seat 2 is installed on the contact 1, a reinforcing rib 3 is placed in the ring of the contact seat 2, and the lower end surface of the reinforcing rib 3 is welded with the upper end surface of the contact 1, and the conductive rod 4 is inserted into the reinforcing rib 3, a first gap 5 is formed between the lower end surface of the conductive rod 4 and the upper end surface of the contact 1, and a second gap 6 is formed between the step surface of the conductive rod 4 and the upper end surface of the reinforcing rib 3.
[0012] During the manufacturing process, the width of the first gap 5 should be equal to or smaller than the width of the second gap 6. When the widths of the two are equal, during the process of closing pressure, after the conductive rod 4 contacts the contact 1, the reinforcing rib 3 and the con...
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The invention discloses a contact yielding structure which comprises a contact, wherein the contact is provided with a contact seat; a reinforcing rib is placed in a contact seat ring, and the reinforcing rib contacts with the contact; a conductive rod is sleeved into the reinforcing rib; a first gap is formed between the lower bottom surface of the conductive rod and the upper end surface of the contact; a second gap is formed between the step surface of the conductive rod and the upper end surface of the reinforcing rib. According to the invention, the first gap and the second gap are structurally arranged, and the width of the first gap is less than the width of the second gap; after a contact structure is subjected to the switch-on pressure action of a breaker, the conductive rod contacts with the contact; when the contacts are subjected to the counteracting force therebetween by being mutually contacted, relative movement can be generated between the reinforcing rib and the contact seat, the reinforcing rib can not be clamped on the contact seat any longer and can move within the width remained in the second gap; the counteracting force can be continually consumed in a movement process, so that the bounce time of the integral contact is shortened, and the switch-on bounce of the breaker is reduced.
Description
technical field [0001] The invention relates to a contact structure with low bounce and low contact resistance, belonging to the technical field of vacuum interrupters. Background technique [0002] The contact structure of the vacuum interrupter currently used, the conductive rod and the contact seat are welded, and the two ends of the reinforcing rib are welded. During the opening and closing process of the contact structure, the current is transmitted to the contact seat through the conductive rod, and the circuit The resistance is relatively large. During the closing process, the contact structure is prone to rigid bouncing, and the product has a large bouncing, which affects its breaking performance. Contents of the invention [0003] The purpose of the present invention is to provide a contact structure with low bouncing and low contact resistance, which solves the problem that the contact structure currently used has a large loop resistance. During the closing proce...
Claims
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IPC IPC(8): H01H33/664
Inventor 彭琦柯何跃
Owner 中国振华电子集团宇光电工有限公司(国营第七七一厂)