CN107833810A - Breaker arc leading angle - Google Patents

Abstract

The arc striking angle for a circuit breaker is characterized in that it includes an arc striking angle body (1), and a connection plate (2) is connected to one end of the arc striking angle body (1), and the connecting plate (2) is connected to the arc striking angle The angle body (1) is connected as a whole, the integral arc starting angle body (1) and the connecting plate (2) are provided with slotted holes (3), and the outer end of the connecting plate (2) is provided with a mounting plate ( 4), the mounting plate (4) is provided with a threaded hole (401); the circuit breaker uses an arc angle, and through the improvement of the structure of the arc angle, an integrated structure of the connecting plate, threaded hole and arc angle is realized, The number of parts is reduced, the structure is simple, the installation efficiency is improved, and the stability of the thermal tripper is guaranteed.

Description

Arc strike angle for circuit breaker

technical field

The invention belongs to the technical field of circuit breakers, and in particular relates to an arc striking angle for a circuit breaker.

Background technique

Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and generally does not need to change parts after breaking the fault current, has been widely used.

Circuit breakers are divided into installation types: plug-in type, fixed type and drawer type. The use of circuit breakers can effectively improve the safety of the electrical equipment industry. An important performance index of the circuit breaker is the arc extinguishing ability. At present, the circuit breaker usually uses the arc striking angle to introduce the arc into the arc extinguishing chamber for arc extinguishing treatment. In the prior art, the arc striking angle is usually welded with the connecting plate, and the connecting plate is connected with the wiring Plate welding; or welding the arc starting angle with the soft connector, and then welding the soft connector with the terminal board. Position; This traditional structure has many solder joints and complex structure, which reduces the stability of the thermal release.

Contents of the invention

The purpose of the present invention is to provide a kind of arc starting angle for a circuit breaker, aiming at the technical defect that the solder joints of the existing arc striking angle installation structure have complex structures and reduce the stability of the thermal tripper, by improving the structure of the arc striking angle, The integrated structure of connecting plate, threaded hole and arc angle is realized, the number of parts is reduced, the structure is simple, the installation efficiency is improved, and the stability of the thermal release is guaranteed.

Technical solutions

In order to achieve the above-mentioned technical purpose, the arc striking angle for circuit breaker designed by the present invention is characterized in that it includes an arc striking angle body, one side end of the arc striking angle body is connected with a connecting plate, and the connecting plate and the arc striking angle body Connected into a whole, the integral body of the arc striking angle and the connecting plate are provided with slotted holes, the outer end of the connecting plate is provided with a mounting plate, and the mounting plate is provided with threaded holes;

The outer end of the arc striking angle body is provided with a supporting plate, the supporting plate is bent with the arc striking angle body, the slot extends to the supporting plate, and the slot at the supporting plate is Lead out the arc striker.

Further, the connecting plate and the arc starting plate body are in a bent shape.

Further, a step is provided between the installation board and the connection board.

Further, the arc starting plate is parallel to the arc starting angle body.

Further, the support plate is connected to the arc-leading horn body in a circular arc.

Furthermore, the arc-starting plate is directly led out from the slot hole at the outer end of the arc-starting angle body.

Further, the arc starting plate is directly led out from the outer end plate surface of the arc starting angle body.

Beneficial effect

The arc striking angle for a circuit breaker provided by the present invention realizes an integrated structure of connecting plate, threaded hole and arc angle by improving the arc striking angle structure, reduces the number of parts, has a simple structure, improves installation efficiency, and ensures The stability of the thermal release is improved.

Description of drawings

Accompanying drawing 1 is the structure diagram of embodiment 1 of the present invention.

Accompanying drawing 2 is the schematic structural diagram of the thermal release composed of Embodiment 1 of the present invention.

Accompanying drawing 3 is a structural schematic diagram of the thermal release composed of Embodiment 1 of the present invention installed in a circuit breaker.

Accompanying drawing 4 is the structure diagram of embodiment 2 of the present invention.

Accompanying drawing 5 is the structure diagram of embodiment 3 of the present invention.

Accompanying drawing 6 is the structure diagram of embodiment 4 of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Example 1

As shown in the accompanying drawing 1, the arc striker used for circuit breaker includes the arc striker body 1, the connecting plate 2 is connected to one end of the arc striker body 1, and the connecting plate 2 is connected with the arc striker body 1 into a bent shape. The connecting plate 2 is connected with the arc starting angle body 1 as a whole, the integral arc starting angle body 1 and the connecting plate 2 are provided with slot holes 3, and the outer end of the connecting plate 2 is provided with a mounting plate 4, so that A step is provided between the mounting plate 4 and the connecting plate 2, and a threaded hole 401 is provided on the mounting plate 4;

The outer end of the arc starting angle body 1 is provided with a support plate 5, the support plate 5 is bent with the arc starting angle body 1, the slot hole 3 extends to the support plate 5, and the supported The arc-leading plate 6 is led out from the slot 3 at the plate 5 , and the arc-leading plate 6 is parallel to the arc-leading horn body 1 .

As shown in Figure 2, the thermal tripper made of the above-mentioned arc starting angle is equipped with a driving block 701 on the plug-in board 7, and one end of the bimetal sheet 8 is fixedly welded with the driving block 701. The block 701 is located below the mounting plate 4 , and an adjusting screw 9 is housed in the threaded hole 401 , and the adjusting screw 9 corresponds to the driving block 701 and can adjust the position of the bimetal 8 .

As shown in Figure 3, the adjusting screw 9 is screwed into the threaded hole 401, and at the same time the adjusting screw 9 corresponds to the slot on the wall of the circuit breaker, the adjusting screw 9 is screwed up and down, and the driving block 701 on the plug-in board 7 When the position changes, the bimetal 8 is driven to rotate clockwise, and the left end of the bimetal 8 moves up and down, which can control the distance between the left end of the bimetal 8 and the circuit breaker mechanism. When the circuit breaker is overloaded, the bimetal strip 8 is bent and deformed by the overload heat, which drives the tripping mechanism of the circuit breaker to perform a tripping action within a specified time; the moving and static contacts of the circuit breaker are separated to generate an arc, and the arc reaches the arc angle, the arc enters the arc extinguishing chamber along the arc strike plate 6 in the middle of the arc angle, and plays the role of arc strike and arc extinguishment.

Example 2

As shown in FIG. 4 , the supporting plate 5 is connected to the arc-leading horn body 1 in a circular arc. In this embodiment, the function of the arc starting plate is the same as that in Embodiment 1, and will not be further described here.

Example 3

As shown in FIG. 5 , the arc-leading plate 6 is directly led out from the slot hole 3 at the outer end of the arc-starting angle body 1 . In this embodiment, the function of the arc starting plate is the same as that in Embodiment 1, and will not be further described here.

Example 4

As shown in FIG. 6 , the arc starting plate 6 is directly led out from the outer end plate surface of the arc starting angle body 1 . In this embodiment, the function of the arc starting plate is the same as that in Embodiment 1, and will not be further described here.

The structures, proportions, sizes, quantities, etc. shown in the accompanying drawings of this embodiment are only used to match the content disclosed in the specification, for those familiar with this technology to understand and read, and are not used to limit the implementation of the present invention Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of this invention without affecting the effect and purpose of the present invention. The technical content disclosed by the invention must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle", "clockwise", and "counterclockwise" quoted in this specification are only for the convenience of description. It is not intended to limit the applicable scope of the present invention, and the change or adjustment of the relative relationship shall also be regarded as the applicable scope of the present invention without substantive changes in the technical content.

Claims (7)

1. The arc striking angle for the circuit breaker is characterized in that it includes the arc striking angle body (1), and the connecting plate (2) is connected to one end of the arc striking angle body (1), and the connecting plate (2) is connected with the connecting plate (2) The arc starting angle body (1) is connected as a whole, the integral arc starting angle body (1) and the connecting plate (2) are provided with slotted holes (3), and the outer end of the connecting plate (2) is provided with a mounting plate (4), the mounting plate (4) is provided with threaded holes (401); The outer end of the arc starting angle body (1) is provided with a support plate (5), the support plate (5) is bent with the arc starting angle body (1), and the slot hole (3) extends To the support plate (5), the arc strike plate (6) is led out from the slot hole (3) at the support plate (5). 2. The arc striking angle for a circuit breaker according to claim 1, characterized in that: the connecting plate (2) and the arc striking plate body (1) are bent. 3. The arc striking angle for a circuit breaker according to claim 1, characterized in that: a step is provided between the mounting plate (4) and the connecting plate (2). 4. The arc starting angle for a circuit breaker according to claim 1, characterized in that: the arc starting plate (6) is parallel to the arc starting angle body (1). 5. The arc starting angle for a circuit breaker according to claim 1, characterized in that: the support plate (5) is connected with the arc starting angle body (1) in a circular arc. 6. The arc striker for circuit breaker according to claim 1, characterized in that: the arc striker plate (6) is directly led out from the slot hole (3) at the outer end of the arc striker body (1). 7. The arc starting angle for a circuit breaker according to claim 1, characterized in that: the arc running plate (6) is directly led out from the outer end plate surface of the arc running angle body (1).