CN219457394U - Conductive structure applied to power transfer switch - Google Patents

Abstract

The utility model discloses a conductive structure applied to a power transfer switch, which comprises a transfer switch shell, a moving contact, a fixed contact and an arc extinguishing chamber, wherein the arc extinguishing chamber comprises a supporting plate and a plurality of arc extinguishing pieces connected between the supporting plate and the inner wall of the transfer switch shell; the movable contact is provided with a connecting end and a contact end, the connecting end is rotationally connected with the inner wall of the change-over switch shell through a shaft pin, and the contact end extends into the avoidance space; the arc extinguishing piece is provided with a first clamping edge and a second clamping edge, the first clamping edge is matched with the supporting plate in a clamping way through a first clamping protrusion, and the second clamping edge is matched with the inner wall of the change-over switch shell in a clamping way through a second clamping protrusion. The conductive structure applied to the power transfer switch is beneficial to improving safety by arranging the arc extinguishing chamber, is convenient to install, has a small number of used parts, and is beneficial to reducing the overall size of the power transfer switch.

Description

Conductive structure applied to power transfer switch

Technical Field

The utility model relates to a conductive structure applied to a power transfer switch.

Background

With the current great rise of the society on electricity demand, the dependence of many electric power sites on electric power is very high. If power failure occurs in places such as airports, hospitals and markets, the power supply needs to be quickly switched to a standby power supply to continue to supply power to the places, so that various works are ensured to be continued. At this time, the power transfer switch plays a key role for rapid switching of the power supply. The conductive structure of the power transfer switch mainly comprises a moving contact and a fixed contact, when the moving contact is separated from the fixed contact, an electric arc is generated, and meanwhile, strong current is generated. The current power transfer switch is for improving its safety in utilization, can add the explosion chamber in the switch casing inside generally, but the explosion chamber of current power transfer switch is used the part number many, material cost is higher, is unfavorable for power transfer switch's whole size to reduce the trend, and the operation is also comparatively loaded down with trivial details during the equipment, is unfavorable for improving installation effectiveness.

Disclosure of Invention

The utility model aims to provide a conductive structure applied to a power transfer switch, which has reasonable structure, is beneficial to improving the safety by arranging an arc extinguishing chamber, is convenient to install, has a small number of used parts, and is beneficial to reducing the overall size of the power transfer switch.

In order to achieve the above purpose, the technical scheme of the utility model is to design a conductive structure applied to a power transfer switch, which comprises a transfer switch shell, and a moving contact and a fixed contact which are arranged in the transfer switch shell; the movable contact can rotate between a closed position contacted with the fixed contact and an open position separated from the fixed contact, and further comprises an arc extinguishing chamber arranged above the fixed contact, wherein the arc extinguishing chamber comprises a supporting plate and a plurality of arc extinguishing pieces connected between the supporting plate and the inner wall of the change-over switch shell; the movable contact is provided with a connecting end and a contact end, the connecting end is rotationally connected with the inner wall of the change-over switch shell through a shaft pin, and the contact end extends into the avoidance space; the arc extinguishing piece has first joint limit and second joint limit, and this first joint limit and second joint limit are located respectively and dodge open-ended both sides, be equipped with first card arch on the first joint limit, be equipped with in the backup pad with first card protruding joint complex first draw-in groove, be equipped with the second card arch on the second joint limit, be equipped with on the inner wall of change over switch casing with the protruding joint complex second draw-in groove of second card.

Preferably, the number of the first clamping protrusions on the first clamping edge is two, and the number of the second clamping protrusions on the second clamping edge is two.

Preferably, the avoidance opening is U-shaped.

Preferably, the transfer switch housing is an insulating housing.

The utility model has the advantages and beneficial effects that: the utility model provides a conductive structure applied to a power transfer switch, which has reasonable structure, and by arranging the arc extinguishing chamber, the electric arc generated when a moving contact and a fixed contact are separated is led into the arc extinguishing chamber to be extinguished, thereby being beneficial to improving the safety, and the arc extinguishing chamber is connected with the inner wall of a transfer switch shell in a clamping way, so that the installation of the arc extinguishing chamber is more convenient, and compared with the traditional arc extinguishing chamber structure using two support plates to connect arc extinguishing plates, the arc extinguishing chamber provided by the utility model only uses a single support plate, thus the number of used parts is small, and the whole size of the power transfer switch is beneficial to being reduced.

Drawings

Fig. 1 is a schematic diagram of the present utility model.

Fig. 2 is a schematic view of an arc chute according to the present utility model.

Fig. 3 is a schematic view of a moving contact in the present utility model.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

The technical scheme of the utility model is as follows:

as shown in fig. 1, 2 and 3, a conductive structure applied to a power transfer switch includes a transfer switch housing 1, and a moving contact 2 and a fixed contact 3 provided in the transfer switch housing 1; the movable contact 2 can rotate between a closed position contacting the fixed contact 3 and an open position separated from the fixed contact 3, and further comprises an arc extinguishing chamber 4 arranged above the fixed contact 3, wherein the arc extinguishing chamber 4 comprises a supporting plate 41 and a plurality of arc extinguishing pieces 42 connected between the supporting plate 41 and the inner wall of the change-over switch shell 1; the plurality of arc extinguishing plates 42 are vertically arranged, each arc extinguishing plate 42 is provided with an avoidance opening 421, an avoidance space 43 is formed between the avoidance openings 421 of the plurality of arc extinguishing plates 42, the moving contact 2 is provided with a connecting end 21 and a contact end 22, the connecting end 21 is rotationally connected with the inner wall of the change-over switch shell 1 through a shaft pin 5, and the contact end 22 extends into the avoidance space 43; the arc extinguishing piece 42 is provided with a first clamping edge and a second clamping edge, the first clamping edge and the second clamping edge are respectively positioned at two sides of the avoidance opening 421, a first clamping protrusion 44 is arranged on the first clamping edge, a first clamping groove matched with the first clamping protrusion 44 in a clamping manner is arranged on the supporting plate 41, a second clamping protrusion 45 is arranged on the second clamping edge, and a second clamping groove matched with the second clamping protrusion 45 in a clamping manner is arranged on the inner wall of the change-over switch shell 1. By adopting the scheme, one side of the arc extinguishing piece 42 is directly connected with the inner wall of the change-over switch shell 1 through the clamping fit of the first clamping protrusion 44 and the first clamping groove, and the other side is connected with the supporting plate 41 through the clamping fit of the second clamping protrusion 45 and the second clamping groove, so that the installation of the arc extinguishing chamber 4 is realized; in addition, the arc extinguishing chamber of the utility model only uses a single supporting plate 41, and compared with the traditional arc extinguishing chamber structure using two supporting plates to connect arc extinguishing plates, the arc extinguishing chamber has the advantages of less number of used parts and contribution to reducing the overall size of the power transfer switch.

Further, the number of the first clamping protrusions 44 on the first clamping edge is two, and the number of the second clamping protrusions 45 on the second clamping edge is two. By adopting the above scheme, the stability of connection of the arc extinguishing piece 42 with the support plate 41 and the inner wall of the transfer switch housing 1 is improved.

Further, the relief opening 421 is U-shaped.

Further, the diverter switch housing 1 is an insulating housing.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (4)

1. A conductive structure applied to a power transfer switch comprises a transfer switch shell, and a moving contact and a fixed contact which are arranged in the transfer switch shell; the movable contact can rotate between a closing position contacted with the fixed contact and an opening position separated from the fixed contact, and is characterized by further comprising an arc extinguishing chamber arranged above the fixed contact, wherein the arc extinguishing chamber comprises a supporting plate and a plurality of arc extinguishing pieces connected between the supporting plate and the inner wall of the change-over switch shell; the movable contact is provided with a connecting end and a contact end, the connecting end is rotationally connected with the inner wall of the change-over switch shell through a shaft pin, and the contact end extends into the avoidance space; the arc extinguishing piece has first joint limit and second joint limit, and this first joint limit and second joint limit are located respectively and dodge open-ended both sides, be equipped with first card arch on the first joint limit, be equipped with in the backup pad with first card protruding joint complex first draw-in groove, be equipped with the second card arch on the second joint limit, be equipped with on the inner wall of change over switch casing with the protruding joint complex second draw-in groove of second card.

2. The conductive structure of claim 1, wherein the number of first clamping protrusions on the first clamping edge is two, and the number of second clamping protrusions on the second clamping edge is two.

3. The conductive structure applied to a power transfer switch as claimed in claim 2, wherein the relief opening is U-shaped.

4. A conductive structure for a power transfer switch as claimed in claim 3 wherein said transfer switch housing is an insulating housing.