CN219163251U

CN219163251U - High breaking isolating switch

Info

Publication number: CN219163251U
Application number: CN202320166647.6U
Authority: CN
Inventors: 叶锋; 方德成; 方盼; 廖建生
Original assignee: Zhejiang Chang'an Electric Co ltd
Current assignee: Zhejiang Chang'an Electric Co ltd
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-06-09
Anticipated expiration: 2033-01-16

Abstract

The utility model relates to a high breaking isolating switch which comprises a shell, a handle, a contact frame arranged in the shell in a sliding manner, a pull rod arranged between the handle and the contact frame, a spring arranged between the contact frame and the shell, a moving contact arranged in linkage with the contact frame, and two fixed contacts matched with the moving contact, wherein one side of each of the two fixed contacts is provided with a guide arc iron sheet, and a plurality of iron core sleeves are respectively arranged below the corresponding guide arc iron sheet in the shell at intervals. The utility model has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.

Description

High breaking isolating switch

Technical Field

The utility model relates to an isolating switch, in particular to a high breaking isolating switch.

Background

At present, the small isolating switch is suitable for power distribution and control loops with alternating current of 50Hz or 60Hz and rated working voltage of 220/380V or below, is mainly used as a main switch of a terminal electric appliance, can also be used for controlling various motors, low-power electric appliances, illumination and the like, and is widely applied to places such as industrial and mining enterprises, high-rise buildings, businesses, families and the like. The small isolating switch has poor arc extinguishing performance, an electric arc can be generated when the moving contact and the fixed contact are disconnected, the electric arc can have great damage effect on the contact, the time for disconnecting a circuit can be prolonged, hidden danger is brought to the use of the isolating switch, and therefore the isolating switch has the defects of unreliable performance and lower breaking capacity.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the high-breaking isolating switch which has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.

In order to achieve the purpose, the high breaking isolating switch comprises a shell, a handle, a contact frame arranged in the shell in a sliding manner, a pull rod arranged between the handle and the contact frame, a spring arranged between the contact frame and the shell, a moving contact arranged in linkage with the contact frame, and two fixed contacts matched with the moving contact, wherein one side of each fixed contact is respectively provided with an arc guide iron sheet, and a plurality of iron core sleeves are respectively arranged below the corresponding arc guide iron sheet in the shell at intervals.

The beneficial effects of the structure are as follows: the arc striking piece can play an arc striking role, the arc striking piece can introduce the electric arc between the moving contact and the fixed contact between the plurality of iron core sleeves, the electric arc rotates between the plurality of iron core sleeves, and the electric arc can be rapidly cooled and extinguished, so that the arc extinguishing effect is better, the electric arc can not ablate the moving contact and the fixed contact, the service lives of the moving contact and the fixed contact are longer, and the breaking capacity of the isolating switch is improved. Therefore, the isolating switch has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.

Particularly, the other sides of the two fixed contacts are provided with arc striking pieces, one ends of the arc striking pieces are provided with fixed contacts, and the other ends of the arc striking pieces are provided with arc striking parts. The arc striking part of the striking piece can attract the electric arc at the static contact point, thereby avoiding the electric arc from ablating the static contact point and being beneficial to prolonging the service life of the static contact point.

Particularly, a plurality of support columns are respectively arranged in the shell corresponding to the iron core sleeves, the iron core sleeves are respectively sleeved on the support columns, and the iron core sleeves are matched with the support columns in a clamping way. The plurality of iron core sleeves are arranged on the plurality of support columns, the electric arc can be lengthened by the plurality of iron core sleeves, the electric arc can be cooled rapidly between the plurality of iron core sleeves, the electric arc can be extinguished rapidly, the plurality of iron core sleeves can be clamped on the plurality of support columns in the shell, and accordingly the assembly of the iron core sleeves and the shell is convenient and rapid.

Particularly, two ends of the movable contact are respectively provided with an arc striking angle corresponding to the two movable contacts, a plurality of arc cutting convex strips are respectively arranged in the shell corresponding to the arc striking angles, and the tail parts of the arc striking angles extend towards the directions of the arc cutting convex strips. The arc striking angle can be used for rapidly introducing the electric arc on the movable contact to the arc cutting convex strips, and the arc cutting convex strips can be used for cutting the electric arc, so that the rapid extinction of the electric arc is facilitated, and the breaking capacity of the high breaking isolating switch can be improved.

Particularly, the arc cutting raised strips are distributed at intervals, and arc cutting channels are formed among the arc cutting raised strips. The arc cutting channel can cut and cool the electric arc between the moving contact and the fixed contact, and is beneficial to quick extinction of the electric arc.

Specifically, one end of the fixed contact is provided with a wire pressing part inserted into the wiring terminal, and a wire pressing cavity is formed between the wire pressing part and the wiring terminal. And one end of the fixed contact is inserted into the wiring terminal, so that the fixed contact and the wiring terminal are integrated and modularized, the wiring terminal and the fixed contact are convenient to assemble in a modularized manner, and the assembly efficiency is higher.

Particularly, a plurality of wire pressing convex strips are arranged on the lower end face of the wire pressing part, and a plurality of anti-slip tooth grooves are arranged in the wiring terminal. The line ball sand grip can compress tightly the wire in binding post, and anti-skidding tooth's socket can avoid the wire to roll off binding post, and the wiring is more firm.

Drawings

Fig. 1 is a perspective view showing an internal structure of an embodiment of the present utility model.

Fig. 2 is a front view showing the internal structure of the embodiment of the present utility model.

Fig. 3 is an assembly diagram of a fixed contact and a connecting terminal according to an embodiment of the present utility model.

Detailed Description

As shown in fig. 1 to 3, the embodiment of the utility model is a high breaking isolating switch, which comprises a shell 10, a handle 11, a contact frame 12 arranged in the shell 10 in a sliding manner, a pull rod 13 arranged between the handle 11 and the contact frame 12, a spring 14 arranged between the contact frame 12 and the shell 10, a moving contact 15 arranged in linkage with the contact frame 12, and two fixed contacts 16 matched with the moving contact 15, wherein one side of each fixed contact 16 is respectively provided with a guide arc iron sheet 17, and a plurality of iron core sleeves 18 are respectively arranged below the corresponding guide arc iron sheet 17 in the shell 10 at intervals.

As shown in fig. 1 and 2, the other side of the two fixed contacts 16 is provided with an arc striking piece 19, one end of the arc striking piece 19 is provided with a fixed contact 191, and the other end of the arc striking piece 19 is provided with an arc striking part 192. The arc striking part of the striking piece can attract the electric arc at the static contact point, thereby avoiding the electric arc from ablating the static contact point and being beneficial to prolonging the service life of the static contact point. A plurality of support columns 101 are respectively arranged in the shell 10 corresponding to the plurality of core sleeves 18, the plurality of core sleeves 18 are respectively sleeved on the plurality of support columns 101, and the plurality of core sleeves 18 are matched with the plurality of support columns 101 in a clamping way. The plurality of iron core sleeves are arranged on the plurality of support columns, the electric arc can be lengthened by the plurality of iron core sleeves, the electric arc can be cooled rapidly between the plurality of iron core sleeves, the electric arc can be extinguished rapidly, the plurality of iron core sleeves can be clamped on the plurality of support columns in the shell, and accordingly the assembly of the iron core sleeves and the shell is convenient and rapid. The two ends of the movable contact 15 corresponding to the two movable contacts 151 are respectively provided with an arc striking angle 152, a plurality of arc cutting convex strips 102 are respectively arranged in the shell 10 corresponding to the arc striking angles 152, and the tail parts of the arc striking angles 152 extend towards the plurality of arc cutting convex strips 102. The arc striking angle can be used for rapidly introducing the electric arc on the movable contact to the arc cutting convex strips, and the arc cutting convex strips can be used for cutting the electric arc, so that the rapid extinction of the electric arc is facilitated, and the breaking capacity of the high breaking isolating switch can be improved. The plurality of arc cutting convex strips 153 are arranged at intervals, and arc cutting channels 103 are formed between the plurality of arc cutting convex strips 102. The arc cutting channel can cut and cool the electric arc between the moving contact and the fixed contact, and is beneficial to quick extinction of the electric arc.

As shown in fig. 2 and 3, one end of the fixed contact 16 has a wire pressing portion 161 inserted into the connecting terminal 20, and a wire pressing cavity 200 is formed between the wire pressing portion 161 and the connecting terminal 20. And one end of the fixed contact is inserted into the wiring terminal, so that the fixed contact and the wiring terminal are integrated and modularized, the wiring terminal and the fixed contact are convenient to assemble in a modularized manner, and the assembly efficiency is higher. The lower end face of the wire pressing part 161 is provided with a plurality of wire pressing convex strips 162, and the wiring terminal 20 is internally provided with a plurality of anti-slip tooth grooves 201. The line ball sand grip can compress tightly the wire in binding post, and anti-skidding tooth's socket can avoid the wire to roll off binding post, and the wiring is more firm.

The arc striking piece can play an arc striking role, the arc striking piece can introduce the electric arc between the moving contact and the fixed contact between the plurality of iron core sleeves, the electric arc rotates between the plurality of iron core sleeves, and the electric arc can be rapidly cooled and extinguished, so that the arc extinguishing effect is better, the electric arc can not ablate the moving contact and the fixed contact, the service lives of the moving contact and the fixed contact are longer, and the breaking capacity of the isolating switch is improved. Therefore, the isolating switch has the advantages of simple structure, stable and reliable performance, long service life and good arc extinguishing effect.

Claims

1. The utility model provides a high disconnection isolator, includes casing, handle, slip setting contact frame in the casing, set up the pull rod between handle and contact frame, set up the spring between contact frame and casing, with the moving contact of contact frame linkage setting, with two moving contact matched with static contact, its characterized in that: one side of each of the two fixed contacts is provided with a guide arc iron sheet, and a plurality of iron core sleeves are respectively arranged below the corresponding guide arc iron sheet in the shell at intervals.

2. A high breaking disconnector according to claim 1, characterized in that: the other sides of the two fixed contacts are provided with arc striking pieces, one ends of the arc striking pieces are provided with fixed contacts, and the other ends of the arc striking pieces are provided with arc striking parts.

3. A high breaking disconnector according to claim 1 or 2, characterized in that: the shell in correspond a plurality of iron core sleeve pipe department and be provided with a plurality of support columns respectively, a plurality of iron core sleeve pipes respectively the suit on a plurality of support columns, and constitute the joint cooperation of a plurality of iron core sleeve pipes and a plurality of support columns.

4. A high breaking disconnector according to claim 1 or 2, characterized in that: the two ends of the movable contact are respectively provided with an arc striking angle corresponding to the two movable contacts, a plurality of arc cutting convex strips are respectively arranged in the shell corresponding to the arc striking angles, and the tail parts of the arc striking angles extend towards the directions of the arc cutting convex strips.

5. A high breaking disconnector according to claim 4, characterized in that: the arc cutting convex strips are distributed at intervals, and arc cutting channels are formed among the arc cutting convex strips.

6. A high breaking disconnector according to claim 1 or 2, characterized in that: one end of the static contact is provided with a wire pressing part which is inserted into the wiring terminal, and a wire pressing cavity is formed between the wire pressing part and the wiring terminal.

7. A high breaking disconnector according to claim 6, characterized in that: the lower end face of the wire pressing part is provided with a plurality of wire pressing convex strips, and the wiring terminal is internally provided with a plurality of anti-slip tooth grooves.