CN214378305U

CN214378305U - Arc striking sheet

Info

Publication number: CN214378305U
Application number: CN202022771107.XU
Authority: CN
Inventors: 邓海清
Original assignee: Yueqing Rongtai Electrical Appliance Factory
Current assignee: Yueqing Rongtai Electrical Appliance Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-10-08
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to a technical field of circuit breaker accessory discloses an arc striking piece, and it includes first stationary blade and second stationary blade, first stationary blade and second stationary blade pass through curved connection piece and connect, first stationary blade and second stationary blade mutually perpendicular, be provided with flexible operation structure on the first stationary blade, operation structure can extrude into the mounting groove in the circuit breaker casing in, this application has the stable effect of arc striking piece installation in the circuit breaker casing.

Description

Arc striking sheet

Technical Field

The application relates to the technical field of circuit breaker accessories, in particular to an arc striking plate.

Background

At present, arc extinguishing devices are generally arranged in various switching devices such as circuit breakers and contactors to extinguish arcs so as to ensure the safe operation of electrical equipment. The circuit breaker is mainly used for closing or opening a circuit for supplying electric energy so as to achieve the purposes of power failure, power supply and circuit conversion and protect a circuit system. When the circuit breaks down, the moving contact and the fixed contact are separated. During the breaking process of the switch contact, the voltage between the contacts and the applied magnitude current cause the air dielectric to discharge, resulting in the formation of electric arcs in the moving contact and the static contact. During the formation of the arc, the energy released by the joule effect is very high, and it is common practice: an arc striking sheet with a magnetic conductive material and an arc extinguishing chamber are used for extinguishing the electric arc as fast as possible; in the related art, the arc striking plate is usually compositely cast by copper and aluminum.

However, the current arc striking plate is not firmly fixed in the shell of the circuit breaker, cannot resist thousands of amperes, and cannot resist electric power and thermal power of tens of thousands of amperes, so that the arc striking plate deviates from the normal position, the short circuit between the arc striking plate and a grid plate in an arc extinguishing cover is caused, the arc is difficult to extinguish in time, and the short circuit protection of the circuit breaker fails, and therefore the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to improve the fixed firm problem inadequately of striking piece in the circuit breaker casing, this application provides a striking piece.

The application provides a striking piece adopts following technical scheme:

the utility model provides an arc striking piece, includes first stationary blade and second stationary blade, first stationary blade and second stationary blade pass through curved connection piece and connect, first stationary blade and second stationary blade mutually perpendicular, be provided with deformable's operation structure on the first stationary blade, operation structure can extrude into in the mounting groove in the circuit breaker casing.

By adopting the technical scheme, the arc striking sheet is arranged on the breaker shell, so that when the first fixing sheet and the operation structure are embedded into the installation groove, the operation structure is abutted against the breaker shell, the operation structure can be embedded into the installation groove after being deformed, and the stability of connection between the arc striking sheet and the breaker shell is improved by abutting the first fixing sheet and the operation structure against the two ends of the installation groove; in addition, the operation structure can be deformed, so that the operation structure is reset after the arc striking sheet is separated from the shell of the circuit breaker, and the arc striking sheet can be used next time.

Preferably, the operation structure is an elastic sheet, and the elastic sheet is integrally formed with the first fixing sheet.

Through adopting above-mentioned technical scheme, when the striking piece was installed on the circuit breaker casing, in the mounting groove on the flexure strip embedding circuit breaker casing, make first stationary blade and the relative both ends of flexure strip butt mounting groove respectively, increase the stability of striking piece and circuit breaker casing connection.

Preferably, the operation structure includes a first elastic block arranged on the first fixing plate, an operation rod is arranged on one side of the first elastic block facing the first fixing plate, a deformable operation block is arranged on one side of the operation rod far away from the first elastic block, the radial section of the operation block is larger than that of the operation rod, and an operation hole for the operation rod to pass through is formed in the first fixing plate.

Through adopting above-mentioned technical scheme, when the mounting groove on the circuit breaker casing was installed to the run-on arc piece, first elastic block and circuit breaker casing butt, in the mounting groove of first elastic block deformation embedding on the circuit breaker casing, made the run-on arc piece be connected with the circuit breaker casing.

Preferably, the end face, away from the operating rod, of the first elastic block is provided with an arc-shaped face.

Through adopting above-mentioned technical scheme, when installing the striking piece on the circuit breaker casing, the arcwall face has the guide effect, is convenient for imbed operation structure in the mounting groove.

Preferably, the first fixing piece is provided with an operation groove for embedding the operation block, and the operation groove is communicated with the operation hole.

Through adopting above-mentioned technical scheme, when operation structure installed on first fixed plate, the operation piece was embedded into the operation inslot, had the effect of hiding the operation piece, when installing the mounting groove on the circuit breaker casing with the run-on plate in, avoided receiving the interference of operation piece.

Preferably, the operating structure includes a second elastic block bonded to the first fixing piece.

Through adopting above-mentioned technical scheme, when the striking piece was installed on the circuit breaker casing, through in the mounting groove of second elastic block embedding circuit breaker casing, make first stationary blade and second elastic block butt both ends that the mounting groove is relative respectively, increase the stability of striking piece and circuit breaker casing connection.

Preferably, the connecting piece is provided with a reinforcing strip.

Through adopting above-mentioned technical scheme, set up and strengthen the strip, improve the intensity of connection piece, make the connection piece be difficult for being buckled.

Preferably, an operation part is disposed on one side of the second fixing piece, and the operation part includes a first operation piece connected to the second fixing piece and a second operation piece connected to the first operation piece.

Through adopting above-mentioned technical scheme, provide the mounted position for welding other parts through the second operation piece.

Preferably, a projection is arranged on one side, away from the first fixing sheet, of the second operation sheet.

By adopting the technical scheme, the bump is arranged, so that the contact area with the solder can be increased, and the connection stability of the second operation sheet and other parts is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arc striking sheet is arranged on the shell of the circuit breaker, when the first fixing sheet and the operation structure are embedded into the installation groove, the operation structure is abutted against the shell of the circuit breaker, the operation structure can be embedded into the installation groove after being deformed, and the stability of connection between the arc striking sheet and the shell of the circuit breaker is improved by abutting the first fixing sheet and the operation structure against two ends of the installation groove; in addition, the operating structure can be deformed, so that the operating structure is reset after the arc striking sheet is separated from the shell of the circuit breaker, and the arc striking sheet can be used next time;

2. the reinforcing strips are arranged, so that the strength of the arc striking sheet can be increased, and the arc striking sheet is not easy to deform.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present application;

fig. 2 is a schematic structural view of the arc runner of embodiment 1 mounted on a circuit breaker;

FIG. 3 is a schematic structural view of example 2;

FIG. 4 is a partial sectional view showing the operation structure highlighted in embodiment 2;

FIG. 5 is a partial sectional view showing the operation structure of embodiment 3.

Reference numerals: 1. a first fixing sheet; 11. an operation slot; 12. an operation hole; 2. a second fixing sheet; 3. Connecting sheets; 4. an operating structure; 41. an elastic sheet; 42. a first elastic block; 43. an operating lever; 44. an operation block; 441. chamfering; 45. a second elastic block; 5. an operation section; 51. a first operation piece; 52. a second operation piece; 521. a bump; 6. a housing.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Example 1

The embodiment discloses an arc striking plate. Referring to fig. 1 and 2, the arc runner includes a first fixing piece 1, a second fixing piece 2, and a connecting piece 3, which are integrally formed. The connecting sheet 3 is arc-shaped, one end of the connecting sheet 3 is connected with the first fixing sheet 1, and the axis of the connecting sheet 3 is positioned above the first fixing sheet 1. The other end of the connecting sheet 3 is bent and connected with the upper end face of the second fixing sheet 2. The first fixing piece 1 and the second fixing piece 2 are perpendicular to each other. The first fixing piece 1, the second fixing piece 2 and the connecting piece 3 are installed in the circuit breaker shell 6 and play a role in arc striking.

Referring to fig. 1, a reinforcing strip is integrally formed on one side of the connecting piece 3 facing the axis, the reinforcing strip is arc-shaped in the length direction, and the reinforcing strip and the connecting piece 3 are coaxial.

Referring to fig. 1, an operation portion 5 is integrally formed on a lower end surface of the second fixed plate 2, and the operation portion 5 includes a first operation piece 51 and a second operation piece 52. One end of the first operation piece 51 is connected with the lower end face of the second fixing piece 2, and the first operation piece 51 extends in a direction away from the first fixing piece 1, so that the first operation piece 51 is perpendicular to the second fixing piece 2. The other end of the first operation piece 51 is connected to the second operation piece 52, the second operation piece 52 extends in a direction away from the second fixing piece 2, and the second operation piece 52 is parallel to the second fixing piece 2.

Referring to fig. 1, a protrusion 521 is integrally formed on a side of the second operation piece 52 away from the first operation piece 51, an end surface of the protrusion 521 away from the second operation piece 52 is arc-shaped, and when the second operation piece 52 is welded to another component, a contact area between the second operation piece 52 and a solder is increased by the protrusion 521, thereby improving stability of welding the second operation piece 52 to another component.

Referring to fig. 1 and 2, a deformable operating structure 4 is provided on the first fixing sheet 1. The operation structure 4 is an elastic piece 41, the elastic piece 41 is integrally formed with the first fixing piece 1, and when the arc striking piece is mounted on the circuit breaker housing 6, the elastic piece 41 is deformed and embedded into a mounting groove of the circuit breaker housing 6, so that the lower end face of the mounting groove is abutted against the lower end face of the first fixing piece 1, and the upper end face of the mounting groove is abutted against the elastic piece 41.

The implementation principle of the embodiment 1 is as follows: on circuit breaker casing 6 was installed to the run-on plate, in first stationary blade 1 embedded into circuit breaker casing 6's mounting groove, flexure strip 41 and circuit breaker casing 6 butt, flexure strip 41 warp and imbeds in the mounting groove to make the run-on plate be connected with circuit breaker casing 6.

Example 2

Referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that an operation slot 11 is formed in an upper end surface of the first fixing plate, and an operation hole 12 is formed in an end surface of the operation slot 11 away from the opening. The operation structure 4 is made of an elastic material, the operation structure 4 comprises a first elastic block 42, an operation rod 43 and an operation block 44 which are integrally formed, and two opposite ends of the operation rod 43 are respectively connected with the operation rod 43 and the operation block 44. The end surface of the first elastic block 42 away from the operating rod 43 is an arc surface. The radial section of the operating rod 43 is smaller than that of the operating block 44, and the radial section of the operating rod 43 is smaller than the area of the lower end surface of the first elastic block 42. The edge of the operation block 44 on the side away from the operation rod 43 is provided with a chamfer 441.

Referring to fig. 3 and 4, when the end surface of the operation block 44 facing the first elastic block 42 abuts against the end surface of the operation groove 11 away from the opening, the end surface of the first elastic block 42 facing the operation lever 43 abuts against the upper end surface of the first fixing plate.

Referring to fig. 3 and 4, when the operation structure 4 is connected to the first fixing plate 1, the operation block 44 is deformed and inserted into the operation hole 12 together with the first fixing plate 1, and the operation block 44 is reset after passing through the operation hole 12, so that the operation block 44 is inserted into the operation slot 11, and the operation structure 4 is connected to the first fixing plate 1. On the contrary, with operation structure 4 and the separation of first stationary blade 1, the staff of being convenient for changes operation structure 4 to improve the life of striking piece.

The implementation principle of the embodiment 2 is as follows: on circuit breaker casing 6 was installed to the run-on plate, in first stationary blade 1 embedded into circuit breaker casing 6's the mounting groove, first elastic block 42 and circuit breaker casing 6 butt, first elastic sheet 41 warp and imbeds in the mounting groove to make the run-on plate be connected with circuit breaker casing 6.

Example 3

Referring to fig. 5, the present embodiment is different from embodiment 1 in that the operation structure 4 is a second elastic block 45, and the second elastic block 45 is made of a rubber material. The second elastic block 45 is bonded or welded to the upper end surface of the first fixing piece 1, so that the second elastic block 45 is connected to the first fixing piece 1.

The implementation principle of the embodiment 3 is as follows: on circuit breaker casing 6 was installed to the run-on plate, in first stationary blade 1 embedded into circuit breaker casing 6's the mounting groove, second elastic block 45 and circuit breaker casing 6 butt, second elastic blade 41 warp and imbeds in the mounting groove to make the run-on plate be connected with circuit breaker casing 6.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides an arc starting sheet, includes first stationary blade (1) and second stationary blade (2), first stationary blade (1) and second stationary blade (2) are connected its characterized in that through curved connection piece (3): the first fixing piece (1) and the second fixing piece (2) are perpendicular to each other, a deformable operation structure (4) is arranged on the first fixing piece (1), and the operation structure (4) can be squeezed into a mounting groove in a breaker shell (6);

the operation structure (4) is an elastic sheet (41), and the elastic sheet (41) and the first fixing sheet (1) are integrally formed.

2. The arc runner of claim 1, wherein: operation structure (4) are including setting up first elastic block (42) on first stationary blade (1), one side that first elastic block (42) are towards first stationary blade (1) is provided with action bars (43), one side that first elastic block (42) are kept away from in action bars (43) is provided with flexible action bars (44), the radial cross-section of action bars (44) is greater than the radial cross-section of action bars (43), set up on first stationary blade (1) and supply handle bar (43) to pass handle hole (12).

3. The arc runner of claim 2, wherein: the end face, far away from the operating rod (43), of the first elastic block (42) is set to be an arc-shaped face.

4. The arc runner of claim 2, wherein: offer on first stationary blade (1) and supply operation piece (44) embedding operation groove (11), operation groove (11) and handle hole (12) intercommunication.

5. The arc runner of claim 1, wherein: the operating structure (4) comprises a second elastic block (45) bonded with the first fixing sheet (1).

6. The arc runner of claim 1, wherein: and a reinforcing strip is arranged on the connecting sheet (3).

7. The arc runner of claim 1, wherein: one side of the second fixing piece (2) is provided with an operation part (5), and the operation part (5) comprises a first operation piece (51) connected with the second fixing piece (2) and a second operation piece (52) connected with the first operation piece (51).

8. The arc runner of claim 7, wherein: a convex block (521) is arranged on one side, away from the first fixing sheet (1), of the second operation sheet (52).