CN115602502A

CN115602502A - Circuit breaker tripping structure

Info

Publication number: CN115602502A
Application number: CN202110780060.XA
Authority: CN
Inventors: 吴红梅; 杨文勇; 杨宇; 陶宗盼
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2023-01-13

Abstract

The embodiment of the application provides a circuit breaker tripping structure. The circuit breaker tripping structure comprises a circuit breaker and a tripping mechanism arranged on the circuit breaker, wherein the tripping mechanism is additionally arranged on the circuit breaker; the tripping mechanism comprises a tripping rocker, the tripping rocker comprises a pivoting connection end, a free rotation end and a handle connection end, the handle connection end is connected with the handle, the free rotation end is connected with the operating mechanism, and the tripping rocker rotates through the pivoting connection end; when the breaker is opened, the handle drives the handle connecting end to drive the tripping rocker to rotate, and the free rotating end of the tripping rocker triggers the operating mechanism to trip to perform the opening operation of the breaker; through the additional tripping mechanism, the operating mechanism is directly triggered by the handle to trip when the breaker is opened, and the breaker is quickly opened through the energy storage spring in the operating mechanism.

Description

Circuit breaker tripping structure

Technical Field

The application relates to the field of low-voltage apparatuses, in particular to a circuit breaker tripping structure.

Background

A circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition within a predetermined time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-low voltage boundary line is divided more vaguely, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, has the function equivalent to the combination of a fuse type switch, an over-under-heat relay and the like, does not need to change parts after breaking fault current, and is widely applied at present.

At present, a small circuit breaker can realize quick closing through an energy storage structure, but cannot realize quick opening due to space limitation, namely, the breaking speed of a contact system is related to the speed of operating an opening handle when a circuit is opened, and the contact system of the circuit breaker can be burnt if the circuit breaker is opened slowly.

Disclosure of Invention

The utility model provides a purpose overcomes prior art's defect, provides a circuit breaker tripping device that circuit breaker separating brake is quick, performance safety and stability.

In order to achieve the purpose, the following technical scheme is adopted in the application:

a circuit breaker tripping structure comprises a circuit breaker, wherein the circuit breaker comprises a shell and a handle which is pivotally connected to the top of the shell, the handle is connected with an operating mechanism, and the handle drives the operating mechanism to perform opening and closing operations of the circuit breaker; the tripping device is arranged on the circuit breaker; the tripping mechanism comprises a tripping rocker, the tripping rocker comprises a pivoting connecting end, a free rotating end and a handle connecting end, the handle connecting end is connected with the handle, the free rotating end is connected with the operating mechanism, and the tripping rocker rotates through the pivoting connecting end; when the breaker is opened, the handle drives the handle connecting end to drive the tripping rocker to rotate, and the free rotating end of the tripping rocker triggers the operating mechanism to trip, so that the breaker is opened.

Further, the tripping mechanism is located on one side of the outer portion of the shell of the circuit breaker.

Furthermore, the operating mechanism of the circuit breaker comprises a hasp and a jump buckle which are matched with each other, and when the hasp is driven to be removed from the hasp matched with the jump buckle, the operating mechanism is tripped to drive the moving contact to be separated from the fixed contact.

Further, the tripping rocker comprises a first end arm and a second end arm; the pivot joint end is arranged at the joint of the first end arm and the second end arm, the free rotation end is arranged at the end part of the first end arm, and the handle joint end is arranged at the end part of the second end arm.

Furthermore, the handle connecting end is a first stroke hole formed in the end part of the second end arm.

Furthermore, the free rotation end is a push rod extending towards the operating mechanism from the end part of the first end arm, a second stroke hole is formed in the corresponding position of the shell, the push rod extends into the operating mechanism inside the shell, and a linkage hole in linkage fit with the push rod is formed in a lock catch of the operating mechanism.

Furthermore, the tripping mechanism further comprises a positioning pin, and the handle connecting end is movably connected with the handle through the positioning pin.

Furthermore, the handle connecting end is a first stroke hole, and the size of the first stroke hole is larger than that of the positioning pin, so that when the handle drives the breaker to be switched on, the handle drives the positioning pin to move for an idle stroke in the first stroke hole.

Furthermore, the positioning pin comprises a positioning pin body and a limiting column extending towards one side of the positioning pin body; the locating pin body is inserted into the handle, and the limiting column is movably connected with the connecting end of the handle.

Furthermore, the tripping mechanism further comprises a fixing plate, the fixing plate is fixedly installed on one side of the outer portion of the shell of the circuit breaker, and the pivoting connection end of the tripping rocker is in pivoting connection with the fixing plate.

Furthermore, the fixing plate is T-shaped and comprises a transverse fixing rod and a longitudinal fixing rod vertically connected to the middle of the transverse fixing rod, and the tripping rocker is rotatably mounted on the longitudinal fixing rod; the both ends of horizontal dead lever extend towards the casing and be equipped with casing installation complex fixed protrusion, the both ends lateral wall of circuit breaker is equipped with respectively and installs complex mounting groove with fixed protrusion.

Furthermore, the tripping mechanism also comprises a positioning pin and a fixing plate, and the movable connecting end is movably connected with the handle through the positioning pin; the fixed plate is fixedly installed on one side of the outer portion of a shell of the circuit breaker, the pivoting connection end of the tripping rocker is connected to the fixed plate in a pivoting mode, the tripping rocker is located between the shell and the fixed plate, and the fixed plate is located below the tripping rocker.

Furthermore, the operating mechanism comprises a connecting rod, a supporting piece, a lock catch and a jump buckle, the supporting piece is rotatably installed in the shell, the energy storage spring is connected with the supporting piece, the lock catch and the jump buckle are respectively rotatably installed on the supporting piece and in hasp fit, the handle is connected with the jump buckle through the connecting rod, and the moving contact is connected with the supporting piece.

Further, or, operating device includes rocking arm, connecting rod, supporting member, hasp and jump and detain, and rocking arm and supporting member rotate to be installed in the casing, and the rocking arm passes through rocking arm spring and is connected with the supporting member is spacing, and energy storage spring is connected with the supporting member, and hasp and jump detain rotate respectively to be installed on the supporting member and hasp cooperation, and the handle passes through the connecting rod to be connected with jumping the knot, and the moving contact is connected with the rocking arm, and the handle is equipped with the spacing arm with rocking arm sliding fit in the casing.

In the embodiment of the application, the circuit breaker tripping structure comprises a circuit breaker and a tripping mechanism arranged on the circuit breaker, wherein the tripping mechanism is additionally arranged on the circuit breaker; when the breaker is opened, the handle drives the handle connecting end to drive the tripping rocker to rotate, and the free rotating end of the tripping rocker assists in pushing the operating mechanism to trip to perform the opening operation of the breaker; through the tripping device who adds, directly trigger operating device by the handle and drop the thread when the circuit breaker separating brake, make the circuit breaker realize quick separating brake through the energy storage spring in the operating device, prevent that the circuit breaker from burning out, improve the security performance of circuit breaker.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker in a closing state according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a circuit breaker in a tripping process according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a circuit breaker in an opening state according to an embodiment of the circuit breaker tripping structure;

fig. 4 is a schematic structural view of the back side of the circuit breaker tripping structure of the embodiment of the present application;

fig. 5 is a schematic structural diagram of an internal structure of a circuit breaker of the circuit breaker tripping structure according to the embodiment of the present application;

fig. 6 is a schematic structural view of a circuit breaker sidewall of a circuit breaker trip mechanism according to an embodiment of the present application;

fig. 7 is an exploded view of the trip mechanism of the circuit breaker trip arrangement of the embodiment of the present application;

fig. 8 is an assembled schematic view of a trip mechanism of a circuit breaker trip arrangement of an embodiment of the present application;

fig. 9 is a schematic structural view of a trip rocker of a circuit breaker trip structure according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a fixing plate of a circuit breaker tripping structure according to an embodiment of the present application.

Detailed Description

The following further describes a specific implementation of the circuit breaker trip structure of the present application with reference to the embodiments shown in fig. 1 to 10. The circuit breaker trip structure of the present application is not limited to the description of the following embodiments.

At present, a small circuit breaker can realize quick closing through an energy storage structure, but cannot realize quick opening due to space limitation, namely, the breaking speed of a contact system is related to the speed of operating an opening handle when a circuit is opened, and the contact system of the circuit breaker can be burnt if the circuit breaker is opened slowly. To the technical problem that above-mentioned exists, this application provides circuit breaker dropout structure solves above-mentioned technical problem.

As shown in fig. 1 to 5, an embodiment of the present application provides a circuit breaker tripping structure, which includes a circuit breaker a and a tripping mechanism B installed on the circuit breaker a; the circuit breaker comprises a shell and a handle 41 which is pivotally connected to the top of the shell, wherein the handle 41 is connected with an operating mechanism, and the handle 41 drives the operating mechanism to perform opening and closing operations of the circuit breaker; the tripping mechanism B comprises a tripping rocker 2, the tripping rocker 2 comprises a pivoting connection end, a free rotation end and a handle connection end, the handle connection end is connected with the handle 41, the free rotation end is connected with the operating mechanism, and the tripping rocker 2 rotates through the pivoting connection end; when the breaker is opened, the handle 41 drives the handle connecting end to drive the tripping rocker 2 to rotate, and the free rotating end of the tripping rocker 2 triggers the operating mechanism to trip, so that the breaker is opened.

In the embodiment of the application, the circuit breaker tripping structure comprises a circuit breaker and a tripping mechanism arranged on the circuit breaker, wherein the tripping mechanism is additionally arranged on the circuit breaker; when the breaker is opened, the handle drives the handle connecting end to drive the tripping rocker to rotate, and the free rotating end of the tripping rocker pushes the operating mechanism to trip so as to carry out the opening operation of the breaker; through the tripping device who adds, directly trigger operating device dropout by the handle when the circuit breaker separating brake, make the circuit breaker realize quick separating brake through the energy storage spring in the operating device, prevent that the circuit breaker from burning out, improve the security performance of circuit breaker.

The operating mechanism of the circuit breaker a includes a hasp 43 and a jump buckle, and when the hasp 43 is driven to be disengaged from the hasp of the jump buckle, the operating mechanism is tripped to drive the moving contact to be quickly separated from the static contact, which is the prior art in the field. The improvement point of this application lies in through the tripping device who adds, and the tripping device directly triggers the operating device by the separating brake swing of handle and trips and realizes quick separating brake. The following description will be made of two kinds of embodiments of the operation mechanism, and the operation mechanism of the present application is not limited to the following embodiments.

For example, an embodiment of the operating mechanism is that the operating mechanism includes a connecting rod, a supporting member, a lock 43 and a trip, the supporting member is rotatably installed in the housing, the energy storage spring is connected with the supporting member, the lock 43 and the trip are respectively rotatably installed on the supporting member and are in snap fit, the handle 41 is connected with the trip through the connecting rod, and the movable contact is connected with the supporting member. When the switch is switched on, the handle 41 drives the support piece to rotate through the connecting rod and the trip buckle, and compresses the energy storage spring to drive the moving contact to swing to be in contact with the fixed contact; when the brake is switched off, the handle 41 drives the support member to rotate through the connecting rod and the trip buckle, and drives the moving contact to swing and separate from the static contact; when the latch 43 is driven to be disengaged from the hasp of the jump buckle, the operating mechanism is tripped, and the energy storage spring drives the supporting piece to rotate so as to drive the moving contact to be quickly separated from the static contact.

For example, another embodiment of the operating mechanism is that the operating mechanism includes a rocker arm, a connecting rod, a supporting member, a latch 43 and a trip, the rocker arm and the supporting member are rotatably mounted in the housing, the rocker arm is in limit connection with the supporting member through a rocker arm spring, an energy storage spring is connected with the supporting member, the latch 43 and the trip are respectively rotatably mounted on the supporting member and in snap fit, a handle 41 is connected with the trip through the connecting rod, a moving contact is connected with the rocker arm, and the handle 41 is provided with a limit arm in sliding fit with the rocker arm in the housing. When the switch is switched on, the handle 41 drives the supporting piece to rotate through the connecting rod and the trip buckle to compress the energy storage spring, meanwhile, the limiting arm of the handle 41 limits the rocker arm in the initial stage, the rocker arm does not rotate to compress the rocker arm spring between the rocker arm and the supporting piece, after the handle 41 swings to a certain position, the limiting arm releases the limiting on the rocker arm, the rocker arm spring drives the rocker arm to rotate rapidly, the moving contact is driven to swing to be in contact with the fixed contact, and the rapid switch-on is realized; when the brake is switched off, the handle 41 drives the support member to rotate through the connecting rod and the jump buckle, and drives the moving contact to swing and separate from the static contact; when the lock catch 43 is driven to be disengaged from the hasp of the jump buckle, the operating mechanism is tripped, and the energy storage spring drives the supporting piece to rotate so as to drive the moving contact to be quickly separated from the static contact.

It should be noted that, the tripping mechanism in the embodiment of the present application is not limited to be used in a circuit breaker, and may be assembled on one side of a product, and used as an accessory for a specific application related to the operating speed of a handle of the product, for example, a product of a dual power converter that is slowly opened by a motor. When the handle rotates to the middle position, the contacts of the circuit breaker are not separated and the final pressure does not disappear, the tripping rocker drives the circuit breaker operating mechanism to unlock and trip to realize the quick disconnection of the contacts.

As shown in fig. 1-5, the trip mechanism B is located on the exterior side of the circuit breaker housing; the tripping mechanism B also comprises a positioning pin 1 and a fixing plate 3, and the connecting end of the handle is movably connected with a handle 41 through the positioning pin 1; fixed plate 3 fixed mounting is in the outside one side of the casing of circuit breaker, and the pivot joint end pivot joint of tripping rocker 2 is on fixed plate 3, and tripping rocker 2 is located between casing and fixed plate 3, and fixed plate 3 is located tripping rocker 2's below. The handle connecting end is movably connected with the handle 41 through the positioning pin 1, the pivoting connecting end of the tripping rocker 2 is connected to the fixing plate 3 in a pivoting mode, the tripping rocker 2 is stably installed on the circuit breaker through the positioning pin 1 and the fixing plate 3, the installation of the tripping rocker 2 is stable and reliable, and the whole structure of the tripping mechanism is simple and compact. It should be noted that, in the embodiment of the present application, structures of the positioning pin 1, the trip rocker 2, and the fixing plate 3 of the trip mechanism B are not limited, and when the trip mechanism B is installed in another product, structures of the positioning pin 1, the trip rocker 2, and the fixing plate 3 may be improved according to structural features of the other product, so as to adapt to the other product. For example, the fixing plate 3 is changed to a corresponding housing structure, etc. In addition, tripping device B of the embodiment of this application also can set up in the inboard of the casing of circuit breaker, but need improve the circuit breaker inner structure, and the cost is higher and comparatively complicated.

The specific structure of the trip rocker is shown in fig. 7-9. Trip rocker 2 comprises a first end arm 21 and a second end arm 22; the pivot connection end is arranged at the connection of the first end arm 21 and the second end arm 22, the free rotation end is arranged at the end of the first end arm 21, and the handle connection end is arranged at the end of the second end arm 22. First end arm 21 and the second end arm 22 of dropout rocker 2 each other become the obtuse angle, and dropout rocker 2 rotates through the pivot joint end, rotates the operating device who triggers the circuit breaker through the free rotation end, is connected with the handle of circuit breaker through the handle link to with the handle linkage, and then make the circuit breaker separating brake with higher speed become possible, the simple compactness of overall structure of the dropout rocker of this application embodiment.

As shown in fig. 7 and 9, the pivotal connection is a pivot shaft 23 extending toward the housing at the junction of the first and

second end arms

21 and 22. Accordingly, a pivot hole that cooperates with the pivot shaft 23 should also be provided. The pivot hole may be a groove structure or a through hole structure, and may be disposed on the case of the circuit breaker and also on the fixing plate 3.

As shown in fig. 1, 7 and 9, the handle connection end of the trip rocker 2 is a first stroke hole 221 formed at the end of the second end arm 22. The handle connecting end, wherein the first stroke hole 221 limits the stroke of the handle connecting end of the trip rocker 2. Preferably, the first stroke hole 221 is an elliptical hole or a square hole, and the specific shape of the first stroke hole 221 is not limited in the embodiment of the present application.

As shown in fig. 7-9, the free rotation end of the trip rocker 2 is a push rod 211 extending from the end of the first end arm 21 toward the operating mechanism, a second travel hole 42 of the operating mechanism is provided at a corresponding position of the housing, the push rod 211 extends into the housing, and a latch 43 of the operating mechanism is provided with a linkage hole 431 cooperating with the push rod 211. Preferably, the second travel aperture 42 is an arcuate aperture. The trip rocker 2 pivots, the movement track of the push rod 211 of the first end arm 21 is an arc-shaped movement track, and the movement track of the latch 43 of the operating mechanism of the circuit breaker is also an arc-shaped movement track, so that the second stroke hole 42 is an arc-shaped hole, and the second stroke hole 42 simultaneously limits the stroke of the push rod 211. The push lever 211 and the pivot shaft 23 are located on both sides of the trip rocker 2, respectively.

When the trip rocker 2 is installed, the pivot shaft 23 is installed in the pivot hole 311 of the fixed plate 3; the limit post 12 extends into the first stroke hole 221 of the second end arm 22; the push rod 211 of the first end arm 21 passes through the second stroke hole 42 and extends into the housing, and the push rod 211 is inserted into the linkage hole 431 on the lock catch 43, so that the push rod 211 is in linkage fit with the operating mechanism.

As shown in fig. 7 and 8, the sliding connection structure between the trip rocker 2 and the handle 41 in the embodiment of the present application is: the handle connecting end of the trip rocker 2 is movably connected with the handle 41 through the positioning pin 1. Preferably, the size of the first stroke hole 221 is larger than that of the positioning pin 1, so that when the handle 41 drives the circuit breaker to switch on, the handle 41 drives the positioning pin 1 to move an idle stroke in the first stroke hole 221, the trip rocker 2 rotates along with an internal operating mechanism of the circuit breaker, and the push rod 211 synchronously rotates along with a product operating mechanism, so that the internal operating mechanism of the circuit breaker is not tripped and unlocked in the product switching-on process, and the circuit breaker is switched on smoothly; when the circuit breaker is opened, the handle 41 drives the trip rocker 2 to rotate through the handle connecting end, the push rod 211 in the trip rocker 2 rotates along with the trip rocker, the rotation speed is faster than that of the lock catch 43 of the internal operating mechanism of the circuit breaker, and the lock catch 43 is driven to be disengaged from the hasp of the jump buckle by the operating mechanism under the driving of the push rod 211, so that the circuit breaker is tripped, and then the circuit breaker swings to the opening position along with the handle 41. Specifically, preferably, the locating pin 1 comprises a locating pin body 11 and a limiting column 12 extending towards one side of the locating pin body 11; the locating pin body 11 is inserted into the handle 41, and the limiting column 12 is movably connected with the connecting end of the handle. Wherein, the limit column 12 extends into the first stroke hole 221, and the first stroke hole 221 limits the stroke of the limit column 12. During installation, the positioning pin body 11 is inserted into the corresponding groove of the handle 41, and the limiting column 12 extends into the first stroke hole 221, so that the handle connecting end of the trip rocker 2 is in sliding connection with the handle 41.

As shown in fig. 7, 8 and 10, the fixed plate 3 is fixedly installed at one side of the outer portion of the case of the circuit breaker, and the pivotal connection end of the trip rocker 2 is pivotally connected to the fixed plate 3. The trip rocker 2 is located between the housing of the circuit breaker and the fixed plate 3.

Specifically, as shown in fig. 10, the specific structure of the fixing plate 3. The fixing plate 3 is in a T shape and comprises a transverse fixing rod 32 and a longitudinal fixing rod 31 vertically connected to the middle of the transverse fixing rod 32, a pivot hole 311 which is in pivot fit with the pivot shaft 23 of the tripping rocker 2 is formed in the longitudinal fixing rod 31, and the pivot shaft 23 is installed in the pivot hole 311 of the fixing plate 3 to achieve the pivot installation of the tripping rocker 2. The shape, size and the like of the fixing plate 3 are not limited in the embodiment of the application, and the shape, size and the like of the fixing plate 3 can be adjusted according to actual conditions.

As shown in fig. 6 and 10, two ends of the transverse fixing rod 32 extend towards the housing to form fixing protrusions 321 fitting with the housing, and two side walls of the two ends of the circuit breaker are respectively provided with mounting grooves 421 fitting with the fixing protrusions 321. During installation, the pivot shaft 23 is installed in the pivot hole 311 of the fixed plate 3, so as to realize the pivot installation of the trip rocker 2, the fixing protrusions 321 at the two ends of the transverse fixed rod 32 face one side of the breaker shell, the transverse fixed rod 32 is pressed downwards, and the fixing protrusions 321 at the two ends of the transverse fixed rod 32 are pressed into the side wall installation grooves 421 at the two ends of the breaker.

The process of accelerating the opening of the breaker by the breaker tripping structure of the present application is described below with reference to the accompanying drawings 1-3:

as shown in fig. 1, the circuit breaker is in a closed state. The handle faces the left side.

As shown in fig. 2, when the switching-off operation is required, the handle 41 is moved to the right, the handle 41 drives the first stroke hole 221 to drive the trip rocker 2 to rotate, and the pushing rod 211 of the trip rocker 2 drives the operating mechanism of the circuit breaker to operate. When the contact of the circuit breaker is not separated and the final pressure is not eliminated when the handle rotates to the middle position, the tripping rocker drives the circuit breaker operating mechanism to trip, and the contact is quickly disconnected.

As shown in fig. 3, the circuit breaker is in an open state. The handle faces the right side.

The following description, with reference to fig. 1-10, of the present application describes the whole process of assembling the circuit breaker trip structure on one side of the circuit breaker:

firstly, the positioning pin body 11 is inserted into the corresponding groove of the handle 41, and the limit column 12 extends into the first stroke hole 221, so that the handle connecting end of the trip rocker 2 is slidably connected with the handle 41.

Next, when the trip rocker 2 is installed, the limit post 12 extends into the first stroke hole 221 of the second end arm 22; the push rod 211 of the first end arm 21 passes through the second stroke hole 42 and extends into the housing, and the push rod 211 is inserted into the linkage hole 431 on the lock catch 43, so that the push rod 211 is in linkage fit with the operating mechanism.

Finally, the fixing plate 3 is mounted on the case, the pivot shaft 23 is mounted in the pivot hole 311 of the fixing plate 3, the fixing protrusions 321 of both ends of the transverse fixing rod 32 face one side of the case of the circuit breaker, and the transverse fixing rod 32 is pressed downward to press the fixing protrusions 321 of both ends of the transverse fixing rod 32 into the both-end side wall mounting grooves 421 of the circuit breaker.

This application embodiment provides unnecessary driving force for the operating device of circuit breaker when the circuit breaker separating brake through the tripping device who adds for quick separating brake is realized to the circuit breaker, prevents that the circuit breaker from burning out, improves the security performance of circuit breaker.

The foregoing is a further detailed description of the present application in connection with specific preferred embodiments and it is not intended to limit the present application to the particular forms set forth herein. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.

Claims

1. A circuit breaker tripping structure comprises a circuit breaker (A), wherein the circuit breaker (A) comprises a shell and a handle (41) which is pivotally connected to the top of the shell, the handle (41) is connected with an operating mechanism, and the handle (41) drives the operating mechanism to perform opening and closing operations of the circuit breaker;

the method is characterized in that: the tripping device also comprises a tripping mechanism (B) arranged on the circuit breaker (A); the tripping mechanism (B) comprises a tripping rocker (2), the tripping rocker (2) comprises a pivoting connection end, a free rotation end and a handle connection end, the handle connection end is connected with a handle (41), the free rotation end is connected with the operating mechanism, and the tripping rocker (2) rotates through the pivoting connection end;

when the breaker is opened, the handle (41) drives the handle connecting end to drive the tripping rocker (2) to rotate, and the free rotating end of the tripping rocker (2) triggers the operating mechanism to trip to perform the opening operation of the breaker.

2. The circuit breaker trip structure of claim 1, wherein: the tripping mechanism (B) is positioned on one side of the outer part of the shell of the circuit breaker.

3. The circuit breaker trip structure of claim 1, wherein: the operating mechanism of the circuit breaker (A) comprises a hasp (43) and a jump buckle which are in hasp fit, and when the hasp (43) is driven to be released from hasp fit with the jump buckle, the operating mechanism is tripped to drive the moving contact to be separated from the static contact.

4. The circuit breaker trip structure of claim 1, wherein: the trip rocker (2) comprises a first end arm (21) and a second end arm (22);

the pivot joint end is arranged at the joint of the first end arm (21) and the second end arm (22), the free rotation end is arranged at the end part of the first end arm (21), and the handle joint end is arranged at the end part of the second end arm (22).

5. The circuit breaker trip structure of claim 4, wherein: the handle connecting end is a first stroke hole (221) formed in the end part of the second end arm (22).

6. The circuit breaker trip structure of claim 4, wherein: the free rotation end is catch (211) that the tip of first end arm (21) extends the setting towards operating device, the relevant position of casing is equipped with catch (211) and stretches into inside operating device's of casing second stroke hole (42), operating device's hasp (43) are equipped with linkage hole (431) with catch (211) linkage complex.

7. The circuit breaker trip structure of claim 1, wherein: the tripping mechanism (B) further comprises a positioning pin (1), and the handle connecting end is movably connected with the handle (41) through the positioning pin (1).

8. The circuit breaker trip structure of claim 7, wherein: the handle connecting end is a first stroke hole (221), the size of the first stroke hole (221) is larger than that of the positioning pin (1), and when the handle (41) drives the breaker to be switched on, the handle (41) drives the positioning pin (1) to move for an idle stroke in the first stroke hole (221).

9. The circuit breaker trip structure of claim 7, wherein: the positioning pin (1) comprises a positioning pin body (11) and a limiting column (12) extending towards one side of the positioning pin body (11); the locating pin body (11) is connected with the handle (41) in an inserting mode, and the limiting column (12) is movably connected with the connecting end of the handle.

10. The circuit breaker trip structure of claim 2, wherein: the tripping mechanism (B) further comprises a fixing plate (3), the fixing plate (3) is fixedly installed on one side of the outer portion of the shell of the circuit breaker, and the pivoting connection end of the tripping rocker (2) is in pivoting connection with the fixing plate (3).

11. The circuit breaker trip structure of claim 10, wherein: the fixing plate (3) is T-shaped and comprises a transverse fixing rod (32) and a longitudinal fixing rod (31) vertically connected to the middle of the transverse fixing rod (32), and the tripping rocker (2) is rotatably arranged on the longitudinal fixing rod (31); the both ends of horizontal dead lever (32) extend towards the casing and are equipped with casing installation complex fixed protrusion (321), the both ends lateral wall of circuit breaker is equipped with respectively and installs complex mounting groove (421) with fixed protrusion (321).

12. The circuit breaker trip structure of claim 1, wherein: the operating mechanism comprises a connecting rod, a supporting piece, a lock catch (43) and a jump buckle, the supporting piece is rotatably arranged in the shell, the energy storage spring is connected with the supporting piece, the lock catch (43) and the jump buckle are respectively rotatably arranged on the supporting piece and are in hasp fit, the handle (41) is connected with the jump buckle through the connecting rod, and the moving contact is connected with the supporting piece;

or, the operating mechanism comprises a rocker arm, a connecting rod, a supporting piece, a lock catch (43) and a jump buckle, the rocker arm and the supporting piece are rotatably installed in the shell, the rocker arm is in limit connection with the supporting piece through a rocker arm spring, an energy storage spring is connected with the supporting piece, the lock catch (43) and the jump buckle are respectively rotatably installed on the supporting piece and in hasp fit, a handle (41) is connected with the jump buckle through the connecting rod, a moving contact is connected with the rocker arm, and the handle (41) is provided with a limit arm in sliding fit with the rocker arm in the shell.