Copper multi-arc-groove disc-shaped contact

Abstract

The utility model discloses a copper disc-shaped contact with multiple arc grooves. The copper disc-shaped contact comprises a top center hole, six-equal-division arc grooves and disc edge six-equal-division arc grooves. On the premise of ensuring the tightness of the contact, a central hole and a groove are punched (milled) on the contact. According to different specifications and thicknesses of products, the diameter of the top center hole is 1 / 5 of the diameter of the disc, the groove is arc-shaped, and the width of the groove is 2mm-5mm. The surface area of the contact is totally reduced by about 10%-20% through the top center hole and the 12 arc grooves in the top and the disc edge. Therefore, the resistance in the circuit is increased, the current of the arc is limited, the energy of the arc is weakened, the duration of the arc is shortened, and the harm of the arc is reduced.

Description

Technical Field

[0001] The utility model relates to a contact, in particular to a copper multi-arc groove disc-shaped contact. Background Art

[0002] Copper disc contacts are mainly used in AC high-voltage vacuum contactors. Arcs are generated when the contacts are in contact or out of contact, which is also the cause of damage to electrical equipment. How to extinguish the arc is the key to contact design. The existing technology is to mill three vertical grooves along the contact disc to reduce the contact surface, but the reduced area is very small and the effect is not obvious. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a copper multi-arc slot disc-shaped contact to limit arc current, weaken arc energy, shorten arc duration and reduce arc hazards.

[0004] In order to solve the above problems, the technical solution of the utility model is:

[0005] A copper multi-arc slot disc-shaped contact includes three parts: a top center hole, six equally divided arc slots, and six equally divided arc slots on the edge of the disc. On the premise of ensuring the tightness of the contact, the center hole and slot are punched (milled) on the contact. According to different product specifications, the diameter of the top center hole is 1 / 5 of the diameter of the disc, the slot is arc-shaped, and the slot width is 2mm-5mm. The 12 arc slots on the top center hole, the top and the edge of the disc reduce the surface area of ​​the contact by about 10%-20%. Thereby increasing the resistance in the circuit, limiting the current of the arc, weakening the energy of the arc, shortening the arc duration, and reducing the harm of the arc.

[0006] The utility model is beneficial in that:

[0007] On the premise of ensuring the tightness of the contacts, a center hole with a diameter of 1 / 5 of the disk diameter and 12 arc grooves with a width of 2mm-5mm are punched (milled) on contacts of different specifications, so that the contact surface area is reduced by 10%-20% in total, thereby increasing the resistance in the circuit, limiting the arc current, weakening the arc energy, and shortening the arc duration. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the utility model. In the figure: 1-contact, 2-center hole, 3-top arc groove, 4-disc edge arc groove. DETAILED DESCRIPTION

[0009] The specific implementation modes of the present invention will be further described below in conjunction with the accompanying drawings to facilitate a better understanding of the present invention, but they do not constitute a limitation to the present invention.

[0010] like Figure 1 As shown:

[0011] A copper multi-arc slot disc-shaped contact 1 comprises three parts: a top center hole 2, a top six-divided arc slot 3 and a disc edge six-divided arc slot 4. On the premise of ensuring the tightness of the contact, the center hole and the slot are punched (milled) on the contact. According to different product specifications, the diameter of the top center hole is 1 / 5 of the diameter of the disc, the slot is arc-shaped, and the slot width is 2mm-5mm. The 12 arc slots on the top center hole, the top and the disc edge reduce the contact surface area by about 10%-20%. Thereby increasing the resistance in the circuit, limiting the current of the arc, weakening the energy of the arc, shortening the arc duration, and reducing the harm of the arc.

[0012] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the described implementation. Modification, replacement, and deformation of the implementation are still within the protection scope of the utility model.

Claims

1. A copper multi-arc slot disc-shaped contact, characterized by: It includes three parts: the top center hole, six equally divided arc grooves and six equally divided arc grooves on the disk edge. Under the premise of ensuring the tightness of the contact, the center hole is punched on the top of the contact, the six equally divided arc grooves are milled, and the six equally divided arc grooves are milled on the disk edge. The top center hole, the top and the 12 arc grooves on the disk edge reduce the contact surface area by 10%-20%, thereby increasing the resistance in the circuit, limiting the current of the arc, weakening the energy of the arc, shortening the arc duration, and reducing the harm of the arc.

2. A copper multi-arc slot disc-shaped contact according to claim 1, characterized in that: Punch a center hole on the top of the contact. Depending on the product specifications, the diameter of the center hole is 1 / 5 of the diameter of the disc.

3. The copper multi-arc slot disc-shaped contact according to claim 1, characterized in that: Six equally divided arc grooves are milled on the top of the contact and six equally divided arc grooves are milled on the edge of the disc. Depending on the product specifications, the width of the arc groove is 2mm-5mm.

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