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Arc main current resisting contact device and switch device

A main current and arc-resistant technology, applied in the direction of contact engagement, etc., can solve the problems of insufficient radial thickness, poor manufacturing process of leaf springs, and high cost of contact materials, so as to avoid radial overlap and reduce material consumption. Effect of costly, simple assembly process

Active Publication Date: 2015-06-24
XIAMEN HUADIAN SWITCHGEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact better solves the problem of arc ablation and the problem of contact operating force, but the radial thickness dimension is not small enough, the manufacturing process of the leaf spring is poor, and the consistency of the elastic force is poor. In addition, the contact piece material consumption is high

Method used

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  • Arc main current resisting contact device and switch device
  • Arc main current resisting contact device and switch device
  • Arc main current resisting contact device and switch device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Please check figure 1 , FIG. 2 and FIG. 3 , the arc-resistant main current contact device includes a static contact 10 and a moving contact 20 . The static contact 10 includes a contact seat 13, a skeleton 14, a plurality of contact pieces 30 and a coil spring 40. The skeleton 14 is in the shape of a ring and is formed with an inner hole 11 of a rotary structure to match the movable contact 20. The base 13 and the frame 14 are fixedly connected together and form a mounting groove 12 opening toward the inner hole 11 .

[0038] The installation groove 12 has two axially spaced and facing opposite sides, and grooves 121 are provided on the two opposite sides; the contact piece 30 has two ends 31 and a contact portion 32, and the contact portion 32 and The two ends 31 are arranged in a triangular shape. In a preferred solution, the middle part of the contact portion 32 is the most protruding part, and the most protruding part and the two ends 31 are arranged in a triangula...

Embodiment 2

[0049] Please check Figure 4 with Figure 5 , it differs from Embodiment 1 in that: the positioning groove 321 of the contact piece 30 is shaped groove.

Embodiment 3

[0051] Please check Image 6 with Figure 7 , it differs from Embodiment 1 in that: the positioning groove 321 of the contact piece 30 is a rectangular groove.

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PUM

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Abstract

The invention discloses an arc main current resisting contact device and a switch device. The contact device comprises a fixed contact and a moving contact. The moving contact comprises a contact base, a frame, a plurality of contact plates and a spiral spring. The frame is annular-shaped, the inner hole of the frame can be matched with the moving contact, the contact base and the frame are fixedly connected together to form an installing groove with an opening towards the inner hole, the two opposite sides of the installing groove are respectively provided with a groove, each contact plate is provided with two end portions and a contact portion, the contact portion and the two end portions form a triangular shape, the two end portions are arranged on the two grooves in a matched mode and enable each contact plate to move in the radial direction, the spiral spring is bent or connected to be an annular shape, the spring is connected to the installing groove in a matched mode and abuts against each contact plate, the elastic force of the spiral spring enables the contact potion to at least protrude from the installing groove partially and abut against the moving contact, and the current path of the contact device is that current passes through the moving contact, the contact plates, the spiral spring and the contact base. The arc main current resisting contact device and the switch device have the advantages of being higher in reliability, lower in material consumption, more stable in manufacturing process, simpler in assembly technique, and lower in cost.

Description

technical field [0001] The invention relates to an arc-resistant main current contact device and switchgear, in particular to an arc-resistant main current contact device and switchgear for circuit breakers, isolating switches and grounding switches. Background technique [0002] The arc-resistant main current contact device used for circuit breakers, isolating switches and grounding switches usually has two working conditions: 1. The contact device is closed, that is, when the switch is closed, it acts as a conduction current. At this time, the contact device It only needs to withstand the heat caused by the current; 2. At the moment when the contact device disconnects or closes the current, the contact device needs to withstand the ablation of the arc generated between the contact devices. The main current contact device of the switch should be able to work normally under the above two working conditions and ensure a certain electrical life. The existing contact devices a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/44H01H1/38
Inventor 马平柴茂游一民
Owner XIAMEN HUADIAN SWITCHGEAR