CN216288210U - breaker - Google Patents

Abstract

The utility model relates to the field of low-voltage electricity, in particular to a circuit breaker which comprises an operating mechanism, a draw bar and an anti-hot-plugging protection structure, wherein the operating mechanism comprises a rocker arm assembly, the anti-hot-plugging protection structure comprises a first transmission structure and a trigger structure, and the trigger structure comprises a first limiting part and a first driving part; when the breaker is opened, the first transmission structure and the trigger structure reset, so that the first limiting part moves into the breaker shell; when the breaker is switched on in the process of inserting or pulling the breaker mounting position, the first limiting part is limited in the shell of the breaker by the breaker mounting position, and the rocker arm assembly drives the first driving part to move through the first transmission structure so as to drive the traction rod to rotate, so that the operating mechanism is tripped; the hot plugging prevention protection structure of the circuit breaker can prevent the circuit breaker from being switched on in the process of inserting or pulling out the installation position of the circuit breaker.

Description

breaker

technical field

The utility model relates to the low-voltage electrical field, in particular to a circuit breaker.

Background technique

The circuit breaker is one of the important electrical components in the low-voltage electrical field, which is used to connect and break the current; when an overcurrent or short-circuit fault occurs in the circuit, the circuit breaker automatically cuts off the circuit to realize the power supply line and the motor and other lines or equipment. Protect. Among them, the circuit breaker used for plug-in installation in the distribution box cannot be turned on during the installation process to prevent accidents; and during the installation process, if the handle of the circuit breaker is pushed to the closing position, the circuit breaker It also cannot be turned on and energized; in addition, when the circuit breaker is turned on and energized, it cannot be pulled out to avoid accidents.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a circuit breaker whose anti-live plug-in protection structure can prevent the circuit breaker from being closed during the process of inserting or pulling out the installation position of the circuit breaker.

To achieve the above object, the utility model adopts the following technical solutions:

A circuit breaker includes a circuit breaker casing, an operating mechanism and a traction rod arranged in the circuit breaker casing; the operating mechanism includes a rocker arm assembly, and the rocker arm assembly swings to drive the circuit breaker to close or open; the traction The rod is rotated and matched with the operating mechanism, and the traction rod is driven to rotate to trigger the tripping of the operating mechanism;

The circuit breaker further includes an anti-charged plug-in protection structure, the anti-charged plug-in protection structure includes a movably connected first transmission structure and a trigger structure, and the trigger structure includes a first limit portion and a first drive portion that drives and cooperates with the drawbar. , the first limiting part can move between the inner side and the outer side of the circuit breaker housing;

When the circuit breaker is closed, the rocker arm assembly drives the first transmission structure and the triggering structure to act, so that the first limiting portion protrudes outside the circuit breaker housing for cooperating with the circuit breaker installation position limit; the circuit breaker When the circuit breaker is opened, the first transmission structure and the trigger structure are reset, so that the first limit part moves into the circuit breaker casing; when the circuit breaker is closed during the process of inserting or pulling out the circuit breaker installation position, the first limit position The part is limited by the installation position of the circuit breaker in the circuit breaker housing, and the rocker arm assembly drives the first driving part to move through the first transmission structure to drive the traction rod to rotate, so that the operating mechanism is tripped.

Preferably, the anti-charged plug-in protection structure further includes a first reset member, and the first reset member applies a reset force to the trigger structure, so that the trigger structure and the first transmission structure maintain a limit fit, and when the circuit breaker is in the closed state , and also keep the first limiting portion protruding outside the circuit breaker housing.

Preferably, the first restoring member is a torsion spring, a leaf spring, a compression spring or a tension spring.

Preferably, the first transmission structure is slidably arranged on the circuit breaker housing, and the sliding direction of the first transmission structure is perpendicular to the direction in which the circuit breaker is inserted into or pulled out from the installation position of the circuit breaker.

Preferably, the first transmission structure is rotatably connected to the triggering structure, the first transmission structure further includes a first transmission structure limiting portion, and the first reset member applies a restoring force to the triggering structure so that it is limited to the first transmission structure limiting portion. bit coordination;

When the circuit breaker is closed during the process of inserting or pulling out the circuit breaker installation position, the first limiting part is limited by the circuit breaker installation position in the circuit breaker housing, and the rocker arm assembly drives the trigger structure to be opposite to each other through the first transmission structure. When the first transmission structure rotates, the triggering structure drives the first driving part to move at the same time to drive the traction rod to rotate, so that the operating mechanism is tripped.

Preferably, the trigger structure includes a rotating mounting portion and a first bearing portion, the first bearing portion is provided above the drawbar and extends in a direction parallel to the drawbar, and the triggering structure rotates with the first transmission structure through the rotating mounting portion connected, the first bearing part is connected with the rotating mounting part, the first driving part and the first limiting part are both arranged on the first bearing part, and the first bearing part and the limiting part of the first transmission structure are limited and matched;

Alternatively, the triggering structure includes a second bearing portion, a rotating mounting portion and a third bearing portion that are connected in sequence, the triggering structure is rotatably connected to the first transmission structure through the rotating mounting portion, the second bearing portion is drivingly matched with the drawbar, and the first The driving part is arranged on the second bearing part, the third bearing part is arranged above the drawbar and extends in a direction parallel to the drawbar, the first limiting part is arranged on the third bearing part, and the third bearing part is connected to the first transmission Structural limit part limit matching.

Preferably, the circuit breaker further includes an anti-charged plug-in locking structure, and the anti-charged plug-in locking structure includes a movably connected second transmission structure and a limit structure, the second transmission structure also drives and cooperates with the rocker arm assembly, and the limit structure It includes a second limit part; when the circuit breaker is closed, the rocker arm assembly drives the second transmission structure and the limit structure to act, so that the second limit part protrudes from the outside of the circuit breaker shell and is used for the installation position of the circuit breaker. Limit matching; when the circuit breaker is opened, the second transmission structure and the limiting structure are reset, so that the second limiting part moves into the circuit breaker housing; the circuit breaker is inserted or pulled out in the process of the circuit breaker installation position When closing, the second limiting portion is limited in the circuit breaker casing by the circuit breaker installation position.

Preferably, the anti-charged plug-in locking structure further includes a second reset member, and the second reset member applies a reset force to the limit structure, so that the limit structure and the second transmission structure maintain limit cooperation, and the circuit breaker is in the closing state. In the state, the second limiting portion is also kept protruding outside the circuit breaker housing.

Preferably, the second transmission structure is slidably arranged on the circuit breaker housing, and the sliding direction of the second transmission structure is perpendicular to the direction in which the circuit breaker is inserted into or pulled out from the installation position of the circuit breaker.

Preferably, the second transmission structure is rotatably connected to the limit structure, the second transmission structure includes a limit portion of the second transmission structure, and the second reset member applies a restoring force to the limit structure, so that the limit structure is connected to the second transmission structure. The limit part includes limit fit; when the circuit breaker is inserted into or pulled out of the circuit breaker installation position, when the circuit breaker is closed, the second limit part is limited in the circuit breaker casing by the circuit breaker installation position, and the rocker arm is closed. The assembly drives the limiting structure to rotate relative to the second transmission structure through the second transmission structure.

Preferably, the anti-charged plug-in protection structure and the anti-charged plug-in locking structure are located at two ends of the swing direction of the rocker arm assembly, respectively, and the anti-charged plug-in protection structure and the anti-charged plug-and-pull locking structure are located at one end of the rocker arm assembly. side.

Preferably, the circuit breaker further includes a rotating rod assembly, the rotating rod assembly includes a rotating rod and a rotating rod rotating shaft, the rotating rod is pivotally arranged through the rotating rod rotating shaft; the rocker arm assembly is drivingly matched with the rotating rod to drive the rotating rod to rotate, The two ends of the rotating rod are respectively drivingly connected with the first transmission structure and the second transmission structure.

Preferably, the rotary rod assembly further comprises a rotary rod reset member, the rocker arm assembly drives the circuit breaker to close, and at the same time overcomes the resistance of the rotary rod reset member to drive the rotary rod to rotate in the first direction, and the rocker arm assembly drives the circuit breaker to open, At the same time, the rotating rod restoring member drives the rotating rod to rotate in the second direction, and the first direction and the second direction are opposite directions to each other.

Preferably, the first transmission structure is a first push rod, the second transmission structure is a second push rod, both ends of the rotating rod are respectively provided with a first rotating rod driving shaft and a second rotating rod driving shaft, and the first push rod There is a first waist-shaped hole, the first rotary rod drive shaft is inserted in the first waist-shaped hole, the second push rod is provided with a second waist-shaped hole, and the second rotary rod drive shaft is inserted in the second waist-shaped hole Inside, the rotating rod rotates and drives the first push rod and the second push rod to slide linearly at the same time.

Preferably, the first push rod further comprises a first push rod sliding plate, a first push rod actuated plate and a first push rod connecting plate respectively connected to both ends of the first push rod sliding plate, and the first push rod is connected to the first push rod sliding plate. The moving plate is provided with a first waist-shaped hole, the first push rod sliding plate is slidably arranged on the circuit breaker housing, the triggering structure is rotatably mounted on the first push rod connecting plate, and the first transmission structure limiting part is arranged on the first push rod rod connection plate.

Preferably, the second push rod further comprises a second push rod force plate, a second push rod transmission plate and a second push rod connecting plate which are connected in sequence, the second push rod force plate is drivingly connected with the rotating rod, the first The second push rod transmission plate is slidably arranged on the circuit breaker housing, the limiting structure is rotatably mounted on the second push rod connecting plate, and the limit part of the second transmission structure is arranged on the second push rod connecting plate.

Preferably, the first limiting portion directly or indirectly drives the traction rod to rotate, so that the operating mechanism is tripped.

Preferably, the circuit breaker further includes a magnetic flux assembly or a tripping mechanism. When the circuit breaker is in a closed state, the first limiting portion is squeezed so that the first driving portion drives the magnetic flux assembly or the tripping mechanism to act, and the magnetic flux The assembly or tripping mechanism drives the drawbar to rotate, tripping the operating mechanism.

Preferably, the magnetic flux assembly includes an assembly bracket, a third push rod and a pull hook mounted on the assembly bracket, the pull rod includes a first matching plate, and the third push rod includes a push rod hook that drives and cooperates with the first matching plate ; The first limiting part is squeezed, so that the first driving part drives the draw hook to release the limit on the third push rod, and the third push rod moves and drives the draw rod to rotate through the push rod hook and the first matching plate, Trip the operating mechanism.

Preferably, the magnetic flux assembly includes a third push rod driving member, and the third push rod driving member applies a driving force to the third push rod to rotate the third push rod, so as to be driven by the push rod hook and the first matching plate The drawbar turns.

Preferably, the operating mechanism further includes a mechanism bracket, a jumper, a lock, a re-fastener, a crank, a connecting rod and a main tension spring, and the rocker arm assembly, the jumper, the lock and the re-fastener are respectively It is rotatably arranged on the mechanism bracket, the jumping fastener and the locking fastener are locked and matched, the locking fastener and the re-fastening element are limitedly matched, the re-fastening element is driven and matched with the traction rod, the crank element and the jumping fastener are rotatably connected, and one end of the connecting rod is connected. It is connected in rotation with the crank member, the other end is connected with the moving contact mechanism of the circuit breaker, one end of the main tension spring is connected with the rocker arm assembly, and the other end is connected with the crank member;

The circuit breaker also includes a terminal, the terminal includes an incoming terminal and an outgoing terminal, the incoming terminal and the outgoing terminal are both located at the same end of the circuit breaker housing, and the terminal and the operating mechanism are respectively arranged at the circuit breaker. opposite ends of the housing.

The circuit breaker of the utility model has an anti-charged plug-in protection structure, which cooperates with the rocker arm assembly and the traction rod of the operating mechanism. The casing limit cooperation can prevent the circuit breaker from being pulled out of the circuit breaker installation position in the closed state; when the circuit breaker is closed during the process of being pulled out or inserted into the circuit breaker installation position, the first limit part is closed. The installation position of the circuit breaker is limited in the circuit breaker housing, and the first transmission structure drives the first driving part to move toward the drawbar and drives the drawbar to rotate, so that the operating mechanism is tripped, ensuring that the circuit breaker will not be pulled out in the closed state. The circuit breaker can be removed or inserted into the installation position of the circuit breaker; the anti-live plugging protection structure avoids the live installation or removal operation of the circuit breaker, and ensures the safety of the operator.

In addition, the circuit breaker of the present invention is also provided with an anti-charged plug-in locking structure, which prevents the circuit breaker from being pulled out of the circuit breaker installation position in the closed state, and further improves the safety of electricity consumption.

Description of drawings

1 is a schematic structural diagram of the circuit breaker of the present invention, showing the anti-charged plug-in protection structure, the anti-charged plug-in locking structure and the matching structure of the rocker assembly, and the anti-charged plug-in protection structure is driven by the magnetic flux assembly and the drawbar Cooperate;

Fig. 2 is the enlarged structural representation of part A of Fig. 1 of the present utility model;

FIG. 3 is a schematic structural diagram of the first embodiment of the circuit breaker of the present invention, showing the matching structure of the anti-charged plug-in protection structure, the anti-charged plug-in lock structure and the rocker arm assembly;

Fig. 4 is the exploded structure schematic diagram of the circuit breaker of the present utility model;

5 is a schematic structural diagram of the second transmission structure and the limit structure of the present invention;

6 is a schematic structural diagram of the first transmission structure and the trigger structure of the present invention;

Fig. 7 is the structural representation of the rotating rod of the present invention;

Fig. 8 is the structural representation of the drawbar of the present utility model;

9 is a schematic structural diagram of the circuit breaker of the present invention, the circuit breaker is in an open state, and both the first limiting portion and the second limiting portion are retracted into the circuit breaker housing;

10 is a schematic structural diagram of the circuit breaker of the present invention, the circuit breaker is in a closed state, and both the first limiting portion and the second limiting portion protrude outside the circuit breaker housing;

11 is a schematic structural diagram of the circuit breaker of the present invention, showing an anti-charged plug-in protection structure and a direct drive matching structure of a drawbar;

12 is a schematic structural diagram of the circuit breaker of the present invention, showing another anti-charged plug-in protection structure and a direct drive matching structure of the drawbar;

13 is a schematic structural diagram of the circuit breaker of the present invention, showing the specific structure of the magnetic flux assembly;

Fig. 14 is an enlarged structural schematic diagram of part B of Fig. 13 of the present invention.

Detailed ways

The specific embodiments of the circuit breaker of the present invention will be further described below with reference to the embodiments given in the accompanying drawings 1-12. The circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in Figures 1-10, it is an embodiment of the circuit breaker of the present invention.

As shown in Figures 1, 3, 9-10, the circuit breaker of the present embodiment includes a circuit breaker casing (shown in the figure), an operating mechanism and a drawbar 6 disposed in the circuit breaker casing; the operation The mechanism includes a rocker arm assembly 2, which swings to drive the circuit breaker to close or open; the traction rod 6 is rotatably arranged in the circuit breaker housing to drive and cooperate with the operating mechanism to trigger the tripping of the operating mechanism.

An improvement of the present invention is that the circuit breaker further includes an anti-charged plug-in protection structure, and the anti-charged plug-in protection structure includes a first transmission structure 50 and a trigger structure 51 that are movably connected, and the trigger structure 51 includes a first limit The first limiting part 515 can move between the inside and the outside of the circuit breaker housing; when the circuit breaker is closed, the rocker arm assembly 2 drives the A transmission structure 50 and a trigger structure 51 act, so that the first limiting portion 515 protrudes outside the circuit breaker housing for matching with the installation position of the circuit breaker; when the circuit breaker is opened, the first transmission structure 50 and the trigger structure 515 The structure 51 is reset, so that the first limiting portion 515 is moved into the circuit breaker housing; when the circuit breaker is closed during the process of inserting or pulling out the circuit breaker mounting position, the first limiting portion 515 is limited by the circuit breaker mounting position In the circuit breaker housing, the rocker arm assembly 2 drives the first driving part 510 to move through the first transmission structure 50 to drive the traction rod 6 to rotate, so that the operating mechanism is tripped.

When the circuit breaker of the present invention is installed at the circuit breaker installation position and in place, and the circuit breaker is in the closed state, the first limiting portion 515 protrudes outside the circuit breaker housing and cooperates with the circuit breaker installation position limit, so that the circuit breaker is opened. The circuit breaker cannot be pulled out of the circuit breaker installation position; moreover, when the circuit breaker of the present invention is closed during the process of inserting or pulling out the circuit breaker installation position, the first limiting portion 515 is limited by the circuit breaker installation position on the circuit breaker shell In the body, the rocker arm assembly 2 drives the first driving part 510 to move through the first transmission structure 50 to drive the traction rod 6 to rotate, so that the operating mechanism is tripped, and the safety of the operator is ensured.

Specifically, when the circuit breaker is not installed in the circuit breaker installation position or is installed in the circuit breaker installation position and installed in place: as shown in FIG. 10 , when the circuit breaker is closed, the rocker arm assembly 2 drives the first transmission structure 50 and drive the triggering structure 51 to act, so that the first limiting portion 515 protrudes outside the circuit breaker housing for matching with the circuit breaker installation position; as shown in FIG. 9 , when the circuit breaker is opened, the first transmission structure 50 and the trigger structure 51 are reset, so that the first limiting portion 515 is moved into the circuit breaker housing.

Preferably, as shown in FIG. 9 , when the circuit breaker is opened, the rocker arm assembly 2 drives the first transmission structure 50 and the trigger structure 51 to reset. Of course, the first transmission structure 50 and the triggering structure 51 can also be driven to reset by other structures, for example, they are driven to reset by a return spring (or a return spring sheet).

It should be pointed out that in the circuit breaker, other parts of the operating mechanism (the part that changes the position when the circuit breaker is closed and opened, such as crank, connecting rod, etc.) or the moving contact mechanism can also be used to drive the first A transmission structure 50 and a trigger structure 51 act or reset.

Preferably, as shown in Figures 1, 3, 9-12, the first transmission structure 50 is slidably arranged on the circuit breaker housing, and the sliding direction of the first transmission structure 50 is perpendicular to the installation of the circuit breaker when the circuit breaker is inserted or pulled out. bit direction. Further, as shown in FIGS. 1 , 3 , and 9-12 , the circuit breaker housing further includes an installation base 7 , and the first transmission structure 50 is slidably arranged on the installation base 7 .

Specifically, as shown in Figures 1, 3, 9-12, the first transmission structure 50 is slid left and right on the installation base 7, and the circuit breaker moves up and down to pull out or insert the circuit breaker installation position.

It should be pointed out that the action mode of the first transmission structure 50 is not limited to being slidably arranged on the circuit breaker housing or the mounting base 7 , the first transmission structure 50 can also be rotatably arranged to drive the first limiting portion 515 to protrude Outside the circuit breaker housing.

As shown in Figures 1, 3, 11, and 12, the anti-charged plug-in protection structure further includes a first reset member 52, and the first reset member 52 applies a reset force to the trigger structure 51, so that the trigger structure 51 and the first transmission structure 50 maintains the limit fit, and when the circuit breaker is in the closed state, the first limit portion 515 also keeps the first limit portion 515 protruding outside the circuit breaker housing.

Preferably, as shown in FIGS. 1 , 3 , 11 and 12 , the first transmission structure 50 and the trigger structure 51 are rotatably connected, and the first reset member 52 is a torsion spring, which is sleeved on the rotating shaft of the trigger structure 51 . They are respectively matched with the first transmission structure 50 and the trigger structure 51 . Of course, the first reset member 52 can also be an elastic member of other forms, such as a tension spring, a compression spring, a leaf spring, etc., as long as a necessary reset force can be applied to the trigger structure 51 so that the first limiting portion 515 does not In the case of being squeezed by an external force (for example, being squeezed by the installation position of the circuit breaker), it is sufficient to keep the trigger structure 51 protruding outside the circuit breaker housing and to keep the trigger structure 51 and the first transmission structure 50 in limited cooperation.

Preferably, as shown in Figures 1, 11-13, the first transmission structure 50 is connected to the trigger structure 51 in rotation, the first transmission structure 50 includes a first transmission structure limiting portion 506, and the first reset member 52 is directed toward the trigger structure 51 exerts a restoring force to make it cooperating with the first transmission structure limit part 506; when the circuit breaker is closed in the process of inserting or pulling out the circuit breaker installation position, the first limit part 515 is limited by the circuit breaker installation position. Located in the circuit breaker housing, the rocker arm assembly 2 drives the trigger structure 51 to rotate relative to the first transmission structure 50 through the first transmission structure 50, and the trigger structure 51 drives the first driving part 510 to move to drive the traction rod 6 to rotate, so that the operating mechanism trip.

Specifically, as shown in FIGS. 9 and 10 , the first reset member 52 enables the triggering structure 51 to cooperate with the first transmission structure limiting portion 506 of the first transmission structure 50 in a limited position, and the rocker arm assembly 2 drives the first transmission structure When the 50 and the trigger structure 51 move and reset, the first reset member 52 cooperates with the first transmission structure limiting portion 506 to keep the first transmission structure 50 and the trigger structure 51 relatively stationary.

As another embodiment, the first transmission structure 50 and the driving mechanism 51 may also be overlapped together, and the overlapping position of the first transmission structure 50 and the triggering structure 51 and the first transmission structure limiting portion 506 are respectively located at the triggering Both sides of structure 51 .

As shown in FIG. 12, it is an arrangement of the first driving part 510 and the first limiting part 515 on the trigger structure 51: the trigger structure 51 includes a rotating mounting part 511 and a first bearing part, the first The bearing portion is arranged above the drawbar 6 and extends in a direction parallel to the drawbar 6 , the trigger structure 51 is rotatably connected to the first transmission structure 50 through the rotating mounting portion 511 , the first bearing portion is connected to the rotating mounting portion 511 , and the first driving The first limiting portion 510 and the first limiting portion 515 are both arranged on the first bearing portion, the first limiting portion 515 is arranged between the rotating mounting portion 511 and the first driving portion 510, and the first bearing portion and the first transmission structure limit the position The part 506 is limited and matched. On the one hand, the distance between the first driving part 510 and the rotating mounting part 511 is larger than the distance between the first limiting part 515 and the rotating mounting part 511 , which can effectively enlarge the stroke of the first driving part 510 and improve the reliability of the action. On the other hand, the trigger structure 51 is located above the drawbar 6 as a whole, away from the contact mechanism of the circuit breaker, and has good insulation performance.

As shown in Figures 1, 3, 11, 13-14, it is another arrangement of the first driving part 510 and the first limiting part 515 on the trigger structure 51: the trigger structure 51 includes sequentially connected The second bearing portion, the rotating mounting portion 511 and the third bearing portion, the trigger structure 51 is rotatably connected to the first transmission structure 50 through the rotating mounting portion 511 , and the second bearing portion and the traction rod 6 are driven to cooperate with the first driving portion 510 to be disposed on the first driving portion 510 . On the two bearing parts, the third bearing part is arranged above the drawbar 6 and extends in a direction parallel to the drawbar 6 , the first limiting part 515 is arranged on the third bearing part, the third bearing part and the first transmission structure 506 Limit fit. The space occupied by the trigger structure 51 can be effectively reduced by arranging the first driving portion 510 and the first limiting portion 515 at both ends of the rotating mounting portion 511 .

Preferably, as shown in FIG. 11 , the second bearing portion is connected to the rotating mounting portion 511 by bending and is bent in the direction of the traction rod 6 ; or, as shown in FIGS. 1 , 3 , and 13-14 , the first The second bearing portion and the third bearing portion extend in opposite directions.

As shown in Figures 1, 3, 4, 6-7, 9-10, and 13-14, it is an embodiment of the anti-charged plug-in protection structure: the first transmission structure 50 of the said anti-charged plug-in protection structure The first transmission structure 50 is a first push rod, the trigger structure 51 is a first limit rod, and one end of the first push rod is connected to the rocker arm. The component 2 is driven and matched, and the other end is rotatably connected with the trigger structure 51. The first reset member 52 is a torsion spring, sleeved on the rotating shaft of the trigger structure 51, and the two ends are respectively matched with the first transmission structure 50 and the trigger structure 51; the The first reset member 52 applies a reset force to the trigger structure 51, so that the trigger structure 51 and the first transmission structure 50 maintain a limit fit, and when the circuit breaker is in the closed state, the first limit portion 515 of the trigger structure 51 is kept protruding outside the circuit breaker housing. When the circuit breaker is not installed in the circuit breaker installation position or is installed in the circuit breaker installation position and installed in place: as shown in FIG. 10 , when the circuit breaker is closed, the rocker arm assembly 2 drives the first transmission structure 50 and the trigger structure 51 is actuated, so that the first limiting portion 515 protrudes outside the circuit breaker housing for cooperating with the circuit breaker installation position limit; as shown in FIG. 9 , when the circuit breaker is opened, the rocker arm assembly 2 drives the A transmission structure 50 and a trigger structure 51 are reset to move the first limiting portion 515 into the circuit breaker housing; when the circuit breaker is closed and opened, the first transmission structure 50 and the trigger structure 51 remain relatively static. When the circuit breaker is inserted into or pulled out of the circuit breaker installation position, when the circuit breaker is closed, the first limiting portion 515 is limited by the circuit breaker installation position in the circuit breaker housing, and the first rocker arm assembly 2 passes through the first stopper. The transmission structure 50 drives the trigger structure 51 to rotate relative to the first transmission structure 50 , and the trigger structure 51 drives the first drive part 510 to move to drive the traction rod 6 to rotate, so that the operating mechanism is tripped.

Specifically, as shown in Figures 3-4 and in conjunction with Figures 9-10, the left end of the first transmission structure 50 is drivingly matched with the rocker arm assembly 2, and the right end is rotatably connected to the trigger structure 51; A pin shaft 50-51 is rotatably connected to the first transmission structure 50, and the first reset member 52 is sleeved on the first pin shaft 50-51. One end of the first pin shaft 50-51 is provided with a first pin shaft cap, and the other end is provided with a first pin shaft cap. There is a first limit clip 53 that cooperates with the first pins 50 - 51 , and the first reset member 52 makes the trigger structure 51 and the first transmission structure 50 limit fit. When the circuit breaker is not installed in the circuit breaker installation position or is installed in the circuit breaker installation position and installed in place: the rocker arm assembly 2 rotates counterclockwise to drive the circuit breaker to close, while the rocker arm assembly 2 drives the first transmission structure 50 and triggers The structure 51 slides to the right side synchronously, so that the first limit part 515 of the trigger structure 51 protrudes from the outside of the circuit breaker housing; the rocker arm assembly 2 rotates the lever clockwise to drive the circuit breaker to open, and the first transmission structure 50 The trigger structure 51 slides to the left synchronously, so that the first limiting portion 515 retracts into the inside of the circuit breaker housing; when the circuit breaker is closed and opened, the first transmission structure 50 and the drive joint 51 slide synchronously, The two remain relatively still.

It should be pointed out that the first transmission structure 50 and the trigger structure 51 can slide to the left synchronously under the drive of the rocker arm assembly 2, or can be driven by other reset structures (eg, reset spring or reset spring sheet, etc.).

As shown in FIGS. 4 and 6 , the first transmission structure 50 includes a first push rod sliding plate 502 and a first push rod receiving plate 500 and a first push rod respectively connected to both ends of the first push rod sliding plate 502 The connecting plate 505, the first push rod sliding plate 502 is slidably arranged on the installation base 7, and the installation base 7 is provided with a first sliding groove matched with the first push rod sliding plate 502, and the trigger structure 51 passes through the first pin shaft 50-51 is rotatably mounted on the first push rod connecting plate 505, and the first push rod connecting plate 505 is provided with a first transmission structure limiting portion 506. In this embodiment, the first transmission structure limiting portion 506 is a first push rod limiting plate disposed on the first push rod connecting plate 505 , and is matched with the first limiting rod limiting groove 514 of the trigger structure 51 . Further, as shown in FIGS. 9 and 10 , the first push rod actuated plate 500 is bent to the side where the installation base 7 is located, and the plane where the first push rod connecting plate 505 is located is the plane where the first push rod sliding plate 502 is located. The plane is vertical, the side protrusion of one end of the first push rod sliding plate 502 extends to form the first push rod actuated plate 500, and the first push rod connecting plate 505 is provided with a first push rod that cooperates with the first pins 50-51. In the shaft hole 507, the trigger structure 51 is provided with a first limit rod shaft hole 512 which is matched with the first pin shafts 50-51. In this embodiment, the other end of the first push rod sliding plate 502 and the first push rod connecting plate 505 are further provided with a first push rod head transmission plate 503 and a first push rod tail transmission plate 504 which are bent and give way. The first push rod sliding plate 502, the first push rod head transmission plate 503 and the first push rod tail transmission plate 504 have a Z-shaped structure as a whole, and the first push rod sliding plate 502 and the first push rod tail transmission plate 504 are arranged in parallel One end of the first push rod connecting plate 505 is connected to the first push rod tail transmission plate 504 by bending, and the other end is bent to the side where the first push rod sliding plate 502 is located.

Preferably, the first driving part 510 of the trigger structure 50 directly or indirectly drives the traction rod 6 to trip the operating mechanism. Specifically, the trigger structure 51 is rotatably mounted on the first transmission structure 50, and when the circuit breaker is closed by mistake during the process of inserting or pulling out the circuit breaker installation position, the first limiting portion 515 is closed by the circuit breaker installation position. The first transmission structure 50 drives the trigger structure 50 to rotate relative to the first transmission structure 50, and the first driving part 510 of the trigger structure 51 directly drives the drawbar 6 to rotate, or indirectly drives the drawbar through the intermediate structure. 6 Turn to trip the operating mechanism.

As shown in Figures 1, 13-14, it is an embodiment of the first drive part 510 of the trigger structure 51 to indirectly drive the drawbar 6: the circuit breaker of the present invention further includes a magnetic flux assembly 4, and the first drive part 510 passes through the The magnetic flux assembly 4 is drivingly cooperated with the traction rod 6 . Further, the magnetic flux assembly 4 is disposed opposite the drawbar 6, and when the magnetic flux assembly 4 is triggered, the drawbar 6 can be driven to rotate, so that the operating mechanism is tripped; when the circuit breaker fails (for example, a short circuit or an overload fault), Its internal circuit can trigger the magnetic flux assembly, or it can also trigger the magnetic flux assembly 4 through remote control means. When the circuit breaker of the present invention is closed during the process of inserting or pulling out the installation position of the circuit breaker, the first limiting portion 515 is limited by the installation position of the circuit breaker inside the circuit breaker housing, and the first transmission structure 50 drives the trigger structure 51 to be opposite to each other. When the first transmission structure 50 rotates, the first driving part 510 drives the magnetic flux assembly 4 to move, and the magnetic flux assembly 4 drives the traction rod 6 to rotate, so that the operating mechanism is tripped, and the existing magnetic flux assembly 4 assembled in the circuit breaker is used. Indirectly driving the drawbar 6 is beneficial to simplify the internal structure of the circuit breaker and save the internal space of the circuit breaker.

As shown in Figures 1, 13-14, it is an embodiment of the magnetic flux assembly 4: the magnetic flux assembly 4 includes an assembly bracket 41, a third push rod 42 and a pull hook 43, and the third push rod 42 is slidably arranged on the On the component bracket 41 , the pull hook 43 is rotatably arranged on the component bracket 41 and locks with the third push rod 42 . Push rod hook 420; when the circuit breaker is in the closed state, the first limiting part 515 is squeezed and moved toward the inside of the circuit breaker housing, so that the first driving part 510 drives the hook 43 to rotate, and the hook 43 is released from the first stop. The locks of the three push rods 42 cooperate, and the third push rod 42 drives the draw rod 6 to rotate through the push rod hook 420 and the first matching plate 61 . Further, as shown in FIGS. 13 and 14 , the middle part of the draw hook 43 is rotatably arranged on the component bracket 41 , one end is provided with a draw hook locking part 430 , and the other end is provided with a draw hook driven bending part which is drivingly matched with the first driving part 510 . , the third push rod 42 includes a third push rod locking portion 420 that is locked with the hook locking portion 430, and the third push rod locking portion 420 is provided with a locking groove that is locked with the hook locking portion 430. When the hook locking portion 430 is located in the slot and the third push rod locking portion 420 is in position limit fit, when the two are released from the locking engagement, the hook locking portion 430 is released from the slot, and the hook locking portion 430 and the third push rod locking portion 430 The rod locking portion 420 releases the limit fit; as shown in FIGS. 13 and 14 , the magnetic flux assembly 4 further includes a third push rod driver 44 and a hook reset member 45, the third push rod driver 44 (the third push rod The driving member 44 is preferably a spring, and the two ends are respectively matched with the third push rod 42 and the component bracket 41) to drive the third push rod 42 to slide to drive the traction rod 6 to rotate, and the hook reset member 45 (the hook reset member 45 is preferably a torsion spring. , sleeved on the rotating shaft of the pull hook 43, and the two ends are respectively matched with the pull hook 43 and the component bracket 41) to provide a restoring force for the pull hook 43 to keep it locked with the third push rod 42.

Preferably, as shown in FIGS. 1 and 13 , in order to realize that the triggering structure 51 indirectly drives the traction rod 6 to rotate through the magnetic flux assembly 4 , the first limiting portion 515 and the first driving portion 510 of the triggering structure 51 are distributed in the following manner : The first limiting portion 515 and the first driving portion 510 are respectively located at both ends of the triggering structure 51 , and the triggering structure 51 further includes a rotating mounting portion 511 rotatably connected to the first transmission structure 50 and a first limiting rod extension plate 513, the first limit rod extension plate 513 and the first drive part 510 are respectively connected with both ends of the rotating mounting part 511, and the first limit rod extension plate 513 and the first drive part 510 respectively extend in opposite directions, the first limit The portion 515 is disposed at one end of the first limiting rod extension plate 513 away from the rotating mounting portion 511 , and the free end of the first driving portion 510 is drivingly engaged with the magnetic flux hook 43 . The first limiting rod extension plate 513 is the aforementioned third bearing portion, and the first driving portion 510 is the aforementioned second bearing portion.

As shown in Figures 1, 13-14, it is a layout of the protection structure against live plugging, the drawbar, the mounting base 7 and the magnetic flux assembly 4: the first mating plate 61 is also located on the drawbar 6 side, the trigger structure 51 is installed on the installation base 7 above the drawbar 6 and the first matching plate 61, the magnetic flux assembly 4 is fixedly installed on the installation base 7 and located on one side of the drawbar 6, the first The third push rod hook 420 of the three push rods 42 rests on the first matching plate 61. When the magnetic flux assembly 4 moves, the third push rod hook 420 toggles the first matching plate 61 to make the draw rod 6 rotate counterclockwise ; The draw hook 43 includes a draw hook driven bend that cooperates with the first drive portion 510, the free end of the first drive portion 510 is placed in the draw hook driven bend, and the first limit portion 515 is squeezed to drive the first The driving part 510 drives the pull hook 43 to rotate, so that the pull hook 43 and the third push rod 42 are unlocked, and the third push rod 42 pulls the first matching plate 61 under the driving of the third push rod driving member 44 to make the pull rod 6 counterclockwise turn.

As shown in FIG. 11 , it is a first embodiment in which the first driving part 510 of the trigger structure 51 directly drives the drawbar 6 : the drawbar 6 is arranged on one side of the anti-charged plugging and unplugging protection structure, which includes a rotating setting The drawbar main shaft 60 and the second matching plate 62 arranged on the drawbar main shaft 60; the second matching plate 62 is located on the lower side of the drawbar 6, the first limiting part 515 and the first driving part 510 in this embodiment are respectively Located at both ends of the trigger structure 51 , the first limiting portion 515 is located on the upper side of the drawbar 6 , and the first driving portion 510 is bent from one side of the first transmission structure 50 to the lower side of the drawbar 6 to cooperate with the second The plates 62 are correspondingly arranged, and the first limiting portion 515 is squeezed to rotate the trigger structure 51 , driving the first driving portion 510 to move toward the second matching plate 62 , and directly driving the traction rod 6 to rotate counterclockwise through the second matching plate 62 . Specifically, as shown in FIG. 11 , the trigger structure 51 includes a rotating mounting portion 511 that is rotatably connected to the first transmission structure 50 and a first limiting rod extension plate 513 that is bent and connected to the rotating mounting portion 511 . The position portion 515 is connected to the first limit rod extension plate 513 by bending, and the first position limit portion 515 and the rotation mounting portion 511 are located at the two ends of the first limit rod extension plate 513 respectively. The first driving part connecting plate 5100 connected to the 511 and the first driving part driving plate 5101 which is connected with the first driving part connecting plate 5100 by bending, the first driving part connecting plate 5100 and the first driving part driving plate 5101 are integrally formed. L-shaped or C-shaped structure (it needs to be pointed out that the overall geometric structure of the first driving part connecting plate 5100 and the first driving part driving plate 5101 can satisfy the requirement that the free end of the first driving part driving plate 5101 faces the second matching plate 62. ), the first drive part connecting plate 5100 and the first limit rod extension plate 513 are respectively bent to the upper side and the lower side of the first limit rod connecting plate 511, and the first drive part connecting plate 5100 is folded to the side where the draw rod 6 is located Bending, the driving plate 5101 of the first driving part is directly drivingly engaged with the second matching plate 62 . The first limiting rod extension plate 513 is the aforementioned third bearing portion, and the first driving portion 510 is the aforementioned second bearing portion.

As shown in FIG. 12 , it is a second embodiment of the first driving part 510 of the trigger structure 51 directly driving the drawbar 6 : the drawbar 6 is arranged on one side of the anti-charged plugging protection structure, which includes a rotating setting The drawbar main shaft 60 and the third mating plate 63 arranged on the drawbar main shaft 60, the third mating plate 63 is located on the upper side of the drawbar 6, and the first limiting part 515 and the first driving part 510 are located on the drawbar 6. The upper side is located between the third matching plate 63 and the side of the circuit breaker housing. One end of the trigger structure 51 is rotatably mounted on the first transmission structure 50, the middle part is provided with a first limiting part 515, and the other end is provided with a first drive When the first limiting portion 515 is limited in the circuit breaker housing by the installation position of the circuit breaker, the rocker arm assembly 2 drives the trigger structure 51 to rotate through the first transmission structure 50 , and the first driving portion 510 passes through the third matching plate 63 Drive the drawbar 6 to rotate counterclockwise. Specifically, the trigger structure 51 includes a rotating mounting portion 511 that is rotatably connected to the first transmission structure 50 and a first limiting rod extension plate 513 that is bent and connected to the rotating mounting portion 511 . The limiting rod extension plate 513 is connected by bending, the first limiting portion 515 is arranged in parallel with the rotating mounting portion 511, and the first driving portion 510 includes a first driving portion connecting plate 5100 and a first driving portion driving plate 5101 which are connected by bending. The first drive part connecting plate 5100 is connected with the first limit rod connecting plate 513 to form the first limit rod main body plate. The first drive part drive plate 5101 and the rotating mounting part 511 are located at both ends of the first limit rod main body plate, respectively. The first limiting portion 515 is located in the middle of the main body plate of the first limiting rod; the driving plate 5101 of the first driving portion directly drives and cooperates with the third matching plate 63 . The first limiting rod extension plate 513 and the first driving portion 510 constitute the aforementioned first bearing portion.

Another improvement point of the present invention is that, as shown in Figures 1, 3, 9-10, the circuit breaker further includes an anti-charged plug-in locking structure, and the anti-charged plug-in locking structure includes a movably connected second transmission structure 10 and The limit structure 11, the second transmission structure 10 is also drivingly cooperated with the rocker arm assembly 2, and the limit structure 11 includes a second limit portion 111; when the circuit breaker is closed, the rocker arm assembly 2 drives the second transmission structure 10 and The limiting structure 11 is actuated, so that the second limiting portion 111 protrudes from the outside of the circuit breaker housing for cooperating with the installation position of the circuit breaker; when the circuit breaker is opened, the second transmission structure 10 and the limiting structure 11 are reset, The second limiting portion 111 is moved into the circuit breaker casing; when the circuit breaker is closed during the process of inserting or pulling out the circuit breaker mounting position, the second limiting portion 111 is limited by the circuit breaker mounting position on the circuit breaker casing In order to prevent the second limiting portion 111 from hard contact with the installation position of the circuit breaker, the second limiting portion 111 is squeezed, deformed or damaged, which affects its locking function.

Specifically, when the circuit breaker is not installed in the circuit breaker installation position or is installed in the circuit breaker installation position and installed in place: as shown in FIG. 10 , when the circuit breaker is closed, the rocker arm assembly 2 drives the second transmission structure 10 Acts with the limiting structure 11, so that the second limiting portion 111 protrudes from the outside of the circuit breaker housing, and is used to cooperate with the installation position of the circuit breaker; as shown in FIG. 9, when the circuit breaker is opened, the rocker arm assembly 2 drives The second transmission structure 10 and the limiting structure 11 are reset, so that the second limiting portion 111 is moved into the circuit breaker housing.

Preferably, when the circuit breaker is switched off, the rocker arm assembly 2 drives the second transmission structure 10 and the limiting structure 11 to reset. Of course, the second transmission structure 10 and the limiting structure 11 can also be reset under the driving of other structures, for example, they are reset under the action of a return spring or a return spring sheet.

It should be pointed out that in the circuit breaker, other parts of the operating mechanism (the part that changes the position when the circuit breaker is closed and opened, such as crank, connecting rod, etc.) or the moving contact mechanism can also be used to drive the first The second transmission structure 10 and the limiting structure 11 act or reset.

Preferably, as shown in Figures 1, 3, 9-10, the second transmission structure 10 is slidably arranged on the circuit breaker housing, and the sliding direction of the second transmission structure 10 is perpendicular to the installation of the circuit breaker when the circuit breaker is inserted or pulled out bit direction. Further, as shown in FIGS. 1 , 3 , and 9-10 , the second transmission structure 10 is slidably arranged on the installation base 7 .

Specifically, as shown in Figures 1, 3, 9-10, the second transmission structure 10 is slid left and right on the installation base 7, and the circuit breaker moves up and down to pull out or insert the circuit breaker installation position.

It should be pointed out that the action mode of the second transmission structure 10 is not limited to being slidably arranged on the circuit breaker housing, the second transmission structure 10 can also be rotatably arranged, as long as the limiting structure 11 can be driven to move as a whole to the outside of the housing , so that the second limiting portion 111 can protrude from the outside of the circuit breaker housing; of course, for the purpose of simplifying the structure and saving space, the second transmission structure 10 is slidably arranged, which is a preferred implementation manner of the application.

As shown in Figures 1, 3-4, and 9-13, the anti-charged plug-in locking structure further includes a second reset member 12, and the second reset member 12 applies a reset force to the limit structure 11, so that the limit structure 11 and The second transmission structure 10 maintains the limit fit, and also keeps the second limit portion 111 protruding outside the circuit breaker casing when the circuit breaker is in the closed state.

Specifically, as shown in Figures 9-10, when the circuit breaker is not installed in the circuit breaker installation position or is installed in the circuit breaker installation position and installed in place: the circuit breaker is in the closed state and the open state, the second The reset member 12 applies a reset force to the limit structure 11, so that the limit structure 11 and the second transmission structure 10 maintain the limit cooperation, and when the two act and reset, the two remain relatively static; the circuit breaker is in the closed state Then, the second reset member 12 applies a reset force to the limiting structure 11, so that the second limiting portion 111 remains protruding outside the circuit breaker housing, for cooperating with the mounting position of the circuit breaker, preventing the circuit breaker from being removed from the circuit breaker. Pull out the mounting position.

Preferably, as shown in FIGS. 1 , 3-4 and 9-13 , the second transmission structure 10 and the limiting structure 11 are rotatably connected, and the second reset member 12 is a torsion spring, sleeved on the rotating shaft of the limiting structure 11 . On the upper side, the two ends are respectively matched with the second transmission structure 10 and the limiting structure 11 . Of course, the second reset member 12 can also be an elastic member of other forms, such as a tension spring, a compression spring, a leaf spring, etc., as long as a necessary reset force can be applied to the limiting structure 11 to make the second limiting portion 111 Under the condition of not being squeezed by external force (for example, being squeezed by the installation position of the circuit breaker), it is enough to keep protruding outside the casing of the circuit breaker and to keep the limiting structure 11 and the second transmission structure 10 in limited matching.

Preferably, as shown in FIGS. 1 , 3 , and 9-10 , the second transmission structure 10 and the limiting structure 11 are rotatably connected, and the second transmission structure 10 includes a second transmission structure limiting portion 101 and a second reset member 12 . A restoring force is applied to the limit structure 11, so that the limit structure 11 and the limit part 101 of the second transmission structure maintain a limit fit; during the process of inserting or pulling out the circuit breaker into the installation position of the circuit breaker, when the circuit breaker is closed, The second limiting portion 111 is limited in the circuit breaker housing by the circuit breaker installation position, and the rocker arm assembly 2 drives the limiting structure 11 to rotate relative to the second transmission structure 10 through the second transmission structure 10 .

Specifically, in the process of inserting or pulling out the circuit breaker installation position of the circuit breaker of the present invention, when the operator mistakenly operates the rocker arm assembly 2 to close the circuit breaker, the rocker arm assembly 2 drives the limiting structure through the second transmission structure 10 11 moves, so that the second limiting portion 111 has a tendency to move to the outside of the circuit breaker. Due to the extrusion of the installation position of the circuit breaker, the second limiting portion 111 cannot extend out of the circuit breaker housing, and the rocker arm assembly 2 passes through the circuit breaker. The second transmission structure 10 drives the limiting structure 11 to rotate relative to the second transmission structure 10 , thereby avoiding hard contact between the second limiting portion 111 and the installation position of the circuit breaker.

It should be pointed out that the second transmission structure 10 and the limiting structure 11 can also be connected in other ways, for example, a sliding fit method can be adopted between the two, and the limiting structure 11 is slidably arranged on the second transmission structure 10. When the second limiting portion 111 is pressed by an external force, the limiting structure 11 slides on the second transmission structure 10 so that the second limiting portion 111 is retracted into the circuit breaker housing. Alternatively, the position-limiting structure 11 and the second transmission structure 10 may also be overlapped, and the overlapping positions of the two and the position-limited matching positions of the two are located on both sides of the limiting structure 11 , respectively.

Preferably, as shown in FIGS. 1 , 3 , and 9-12 , the anti-charged plug-in protection structure and the anti-charged plug-in lock structure are located at two ends of the swing direction of the rocker arm assembly 2 respectively, and the anti-charged plug-in protection structure and the anti-charged plug-in locking structure are located on one side of the rocker arm assembly 2 . Specifically, as shown in Figures 1, 3, 9-12, the rocker arm assembly 2 swings left and right to drive the circuit breaker to close or open, and the anti-charged plug-in protection structure is located at the right end of the swing direction of the rocker arm assembly 2, The anti-charged plug-in locking structure is located at the left end of the rocker arm assembly 2 in the swing direction. The circuit breaker of the utility model has an anti-charged plug-in protection structure and an anti-charged plug-in lock structure to protect the circuit breaker from two directions, thereby further improving the safety of electricity consumption. In this embodiment, when the circuit breaker is closed, the rocker arm assembly 2 swings to the anti-live plugging locking structure; when the circuit breaker is opened or tripped, the rocker arm assembly 2 swings to the anti-live plugging protection structure.

As shown in Figures 4-5, it is an embodiment of the anti-charged plug-in lock structure: the anti-charged plug-in lock structure includes a second transmission structure 10 that is rotatably connected and slidably arranged on the circuit breaker housing and a limiter Positioning structure 11, and a second restoring member 12; the second restoring member 12 applies a restoring force to the limiting structure 11, so that the limiting structure 11 and the second transmission structure 10 maintain the position-limiting cooperation, and the circuit breaker is in the closed state Down, the second limiting portion 111 of the limiting structure 11 remains protruding outside the circuit breaker housing. When the circuit breaker is not installed in the circuit breaker installation position or is installed in the circuit breaker installation position and installed in place: as shown in FIG. 10 , the rocker arm assembly 2 swings to close the circuit breaker, and drives the second transmission structure 10 and The limiting structure 11 slides synchronously to the outside of the circuit breaker housing (in the direction shown in FIG. 10 , the second transmission structure 10 and the limiting structure 11 preferably slide to the left side synchronously), and the second limiting portion 111 protrudes from the circuit breaker. The outside of the casing is used to cooperate with the circuit breaker installation position limit to prevent the circuit breaker from pulling out the circuit breaker installation position; as shown in Figure 9, the rocker arm assembly 2 swings to open the circuit breaker, and drives the second transmission structure at the same time 10 and the limiting structure 11 slide toward the inside of the circuit breaker housing (in the direction shown in FIG. 9 , the second transmission structure 10 and the limiting structure 11 preferably slide to the right side synchronously), and the second limiting portion 111 moves into the circuit breaker housing in vivo. Further, as shown in FIGS. 1 , 3-5 and 11-13 , the second transmission structure 10 is a second push rod, which includes a second push rod bearing plate 104 and a second push rod transmission plate that are connected in sequence. 103 and the second push rod connecting plate 100, the second push rod force plate 104 is drivingly matched with the rocker arm assembly 2, the second push rod transmission plate 103 is slidably arranged on the mounting base 7 of the circuit breaker housing, and the mounting base 7 is provided with a second sliding groove that cooperates with the second push rod transmission plate 103; the limiting structure 11 is rotatably mounted on the second push rod connecting plate 100, and the second push rod connecting plate 100 is provided with a second transmission In the structure limiting portion 101 , the second reset member 12 applies a restoring force to the limiting structure 11 , so that the limiting structure 11 and the limiting portion of the second transmission structure are limitedly matched 101 .

As shown in FIGS. 4 and 5 , the second transmission structure limiting portion 101 is a second push rod limiting plate provided on the second push rod connecting plate 100 and connected to it by bending. Further, as shown in FIGS. 4 and 5 , one end of the second push rod connecting plate 100 is connected with one end of the second push rod transmission plate 103 by bending, and the plane where the second push rod connecting plate 100 is located is connected to the second push rod transmission plate. The plane where the plate 103 is located is vertical, and the other end of the second push rod connecting plate 100 is provided with a second push rod limiting plate, the plane where the second push rod limiting plate is located is parallel to the plane where the second push rod transmission plate 103 is located, and the second push rod limiting plate is located on the plane. A side protrusion at the other end of the rod transmission plate 103 extends to form the second push rod force-receiving plate 104 , which is used to drive and cooperate with the rocker arm assembly 2 .

As shown in FIG. 5 , the limiting structure 11 is a second limiting rod, the second limiting rod includes a second limiting rod connecting plate 110 and a second limiting portion 111 , and one end of the second limiting rod connecting plate 110 The second pin shaft 10-11 is rotatably connected to the second push rod connecting plate 100, and the other end is connected to the second limiting portion 111. The second reset member 12 is a torsion spring, which is sleeved on the second pin shaft 10-1. , the two ends are respectively matched with the second transmission structure 10 and the limit structure 11; The rod connecting plate 110 is provided with a second limit rod shaft hole 112 which is matched with the second pin shafts 10 - 11 . Further, as shown in FIG. 5 , the second limit rod connecting plate 110 is provided with a second limit rod spring groove 113 , one end of the second reset member 12 is limitedly matched with the second push rod transmission plate 103 , and the other end is located in the second limit rod transmission plate 103 . in the spring groove 113 of the two limit rods.

As shown in Figures 1, 3, 4, and 9-12, the circuit breaker of the present invention realizes the drive cooperation of the rocker arm assembly 2 with the anti-charged plug-in protection structure and the anti-charged plug-in lock structure in the following ways: the circuit breaker also Including a rotating rod assembly 3, the rotating rod assembly 3 includes a rotating rod 30 and a rotating rod rotating shaft 30-7, the rotating rod 30 is pivotally arranged through the rotating rod rotating shaft 30-7; the rocker arm assembly 2 is drivingly matched with the rotating rod 30 to drive The rotating rod 30 rotates, and the two ends of the rotating rod 30 are respectively drivingly connected with the first transmission structure 50 and the second transmission structure 10 . Further, the rotating rod 30 is rotatably arranged on the installation base 7 through the rotating rod rotating shaft 30-7, or a fixing plate can also be set on the mounting base 7, and the rotating rod 30 is rotated by the rotating rod rotating shaft 30-7. 7 is set in rotation on the fixed plate.

As shown in Figures 1, 3, 4, 9-12, the first transmission structure 50 is a first push rod, the second transmission structure 10 is a second push rod, and the two ends of the rotating rod 30 are respectively provided with first rotating rods The driving shaft 30-50 and the second rotating rod driving shaft 10-30, the first push rod is provided with a first waist-shaped hole 501, the first rotating rod driving shaft 30-50 is inserted in the first waist-shaped hole 501, The second push rod is provided with a second waist-shaped hole 105, and the second rotating rod driving shaft 10-30 is inserted in the second waist-shaped hole 105. The rotating rod 30 rotates and drives the first push rod and the second push rod to slide linearly. Specifically, as shown in FIG. 6 , the first waist-shaped hole 501 is provided on the first push rod driven plate 500 of the first transmission structure 50 ; as shown in FIG. 5 , the second waist-shaped hole 105 is provided on the first push rod driven plate 104 of the first transmission structure 10 .

As shown in Figures 1, 3, and 9-12, the rotating rod assembly 3 further includes a rotating rod restoring member 8, and the rocker arm assembly 2 drives the circuit breaker to close, and at the same time drives the rotating rod 30 to move against the resistance of the rotating rod restoring member 8. When rotated in the first direction, the rocker arm assembly 2 drives the circuit breaker to open, and at the same time, the rotating rod reset member 8 drives the rotating rod 30 to rotate in the second direction, and the first direction and the second direction are opposite to each other. Further, the rotating rod restoring member 8 is a tension spring, one end is connected with the rotating rod 30, and the other end is connected with the mounting base 7 of the circuit breaker housing. Specifically, as shown in Figures 1, 3, 9-12, the first direction is counterclockwise, and the second direction is clockwise. When the rocker arm assembly 2 drives the circuit breaker to close, the rocker arm assembly 2 drives The rotating rod 30 rotates in the first direction, and at the same time, the rotating rod restoring member 8 is stretched to store energy. When the rocker arm assembly 2 drives the circuit breaker to open, the rotating rod restoring member 8 contracts to release energy and drives the rotating rod 30 to rotate in the second direction. .

As shown in FIG. 7 , which is an embodiment of the rotating rod 30 : the rotating rod 30 includes a rotating rod main body 300 and a rotating rod spring mounting part 304 . The rotating rod shaft hole 301, the two sides of the rotating rod shaft hole 301 are respectively provided with a first rotating rod driving shaft hole 303 matching with the first rotating rod driving shaft 30-50 and a second rotating rod driving shaft 303 matching with the second rotating rod driving shaft 10-30. Two rotating rod drive shaft holes 302, the rotating rod spring mounting portion 304 is connected to one side edge of the rotating rod main body 300 and is provided with a spring hanging groove 305 matched with the rotating rod restoring member 8, the rotating rod spring mounting portion 304 and the second rotating rod The driving hole 302 is located at the same end of the rotating rod body 300 .

Preferably, as shown in FIGS. 1 , 3-4 and 7 , the rocker arm assembly 2 includes a rocker arm 20 rotatably arranged and a rocker arm driving member 21 arranged on the rocker arm 20 and acting synchronously with the rocker arm driving member 21 . The rocker arm 20 includes a drive member driving portion 202 disposed protruding outside the rocker arm 20 , and the rocker arm 20 drives the rotating rod 30 to rotate through the drive member driving portion 202 of the rocker arm driving member 21 . Preferably, the rocker arm driving member 21 of this embodiment includes a driving member connecting portion 200 that is fixedly connected to the rocking arm 20 , a driving member connecting portion 201 that is bent and connected to the driving member connecting portion 200 , and is provided on the driving member connecting portion 201 The driving element driving part 202 protruding toward the rotating rod 30 and drivingly matched with the driving element driving part 202 abuts against the rotating rod 30 . Of course, the rocker arm driving member 21 can also be a drive shaft fixed on the rocker arm 20 that acts synchronously with it, and the drive shaft is in contact with the rotating rod 30; alternatively, the rocker arm 21 and the rotating rod 30 can also be The transmission is realized by means of hole-shaft cooperation; that is, the shape of the rocker arm driving member 21 can be of various shapes, and the transmission mode between the rocker arm 20 and the rotating rod 30 can also be changed, as long as the rocker arm can be realized The function of driving the rotating rod 30 to rotate 20 is sufficient.

It should be pointed out that the implementation of the driving cooperation between the first transmission structure 50 and/or the second transmission structure 10 and the rocker arm assembly 2 is not limited to the above one. The first transmission structure 50 and/or the second transmission structure 10 It can also directly drive and cooperate with the rocker arm assembly 2 .

It should be pointed out that the circuit breaker installation position refers to the distribution box, distribution cabinet and other structures used to install and fix the circuit breaker. The limit slot or hole structure matched with the limit part 111, when the circuit breaker is inserted into the circuit breaker installation position and installed in place, after the circuit breaker is closed, the first limit part 515 and the second limit part 111 can be installed through the circuit breaker The matching of the corresponding slots or holes in the position protrudes from the outside of the circuit breaker housing.

It should be pointed out that the operating mechanism also includes a mechanism bracket, a jumper, a lock, a re-fastener, a crank, a connecting rod and a main tension spring, a rocker arm assembly 2, a jumper, a lock and a re-fastener The parts are respectively rotated and arranged on the mechanism support, the jumping parts and the locking parts are locked and matched, the locking parts and the re-fastening parts are limitedly matched, and the re-fastening parts are driven and cooperated with the drawbar 6 (the drawbar 6 rotates from the initial position of the drawbar). to the action position of the drawbar, and at the same time drive the re-fastener to rotate to release the limit match with the lock, so that the operating mechanism is tripped), the crank piece is connected with the jumper in rotation, one end of the connecting rod is connected with the crank piece in rotation, and the other end is connected with the crank piece. Connected to the moving contact mechanism of the circuit breaker, one end of the main tension spring is connected to the rocker arm assembly 2, and the other end is connected to the crank member; the action process and working principle of the operating mechanism have been disclosed in the prior art, and will not be repeated here. Expand the description.

It should be pointed out that the circuit breaker in this embodiment can also be provided with a short-circuit protection mechanism and an overload protection mechanism that are respectively driven and matched with the drawbar 6. When an overcurrent or short-circuit fault occurs, the short-circuit protection mechanism or the overload protection mechanism drives the drawbar 6 to rotate, so that the The operating mechanism has tripped. Further, the circuit breaker in this embodiment may be a multi-pole circuit breaker, and each pole of the circuit breaker is provided with an independent short-circuit protection mechanism and an overload protection mechanism.

The circuit breaker is a plug-in circuit breaker, the circuit breaker includes a terminal, the terminal includes an incoming terminal and an outgoing terminal, and the incoming terminal and the outgoing terminal are both located at the same end of the circuit breaker housing, and the terminal and the operating mechanism are respectively arranged at opposite ends of the circuit breaker housing.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (21)

1. A circuit breaker, comprising a circuit breaker housing, an operating mechanism and a traction rod (6) disposed in the circuit breaker housing; the operating mechanism comprises a rocker arm assembly (2), and the rocker arm assembly (2) swings to drive The circuit breaker is closed or opened; the traction rod (6) is set in rotation and is driven to cooperate with the operating mechanism, and the traction rod (6) is driven to rotate to trigger the tripping of the operating mechanism; It is characterized in that: the circuit breaker further comprises an anti-charged plug-in protection structure, the anti-charged plug-in protection structure includes a first transmission structure (50) and a trigger structure (51) that are movably connected, and the trigger structure (51) includes a first limiter. a position part (515) and a first drive part (510) drivingly matched with the drawbar (6), the first limit part (515) can move between the inner side and the outer side of the circuit breaker housing; When the circuit breaker is closed, the rocker arm assembly (2) drives the first transmission structure (50) and the trigger structure (51) to act, so that the first limiting portion (515) protrudes outside the circuit breaker housing for It cooperates with the installation position limit of the circuit breaker; when the circuit breaker is opened, the first transmission structure (50) and the trigger structure (51) are reset, so that the first limiting part (515) is moved into the circuit breaker housing; the circuit breaker When the circuit breaker is closed during the process of inserting or pulling out the circuit breaker installation position, the first limiting portion (515) is limited by the circuit breaker installation position in the circuit breaker housing, and the rocker arm assembly (2) passes through the first transmission structure ( 50) Drive the first driving part (510) to move to drive the traction rod (6) to rotate, so that the operating mechanism is tripped. 2 . The circuit breaker according to claim 1 , wherein the anti-charged plug-in protection structure further comprises a first reset member ( 52 ), and the first reset member ( 52 ) applies a reset force to the trigger structure ( 51 ). 3 . , so that the trigger structure (51) and the first transmission structure (50) are kept in limit cooperation, and when the circuit breaker is in the closed state, the first limit part (515) is also kept protruding outside the circuit breaker casing. 3. The circuit breaker according to claim 2, wherein the first reset member (52) is a torsion spring, a leaf spring, a compression spring or a tension spring. 4. The circuit breaker according to claim 1, characterized in that: the first transmission structure (50) is slidably arranged on the circuit breaker housing, and the sliding direction of the first transmission structure (50) is perpendicular to the insertion or Pull out the direction in which the circuit breaker is installed. 5. The circuit breaker according to claim 2, wherein the first transmission structure (50) is rotatably connected to the trigger structure (51), and the first transmission structure (50) further comprises a first transmission structure limiting portion (506), the first reset member (52) applies a reset force to the triggering structure (51) to make it cooperating with the limiting portion (506) of the first transmission structure in a limited position; When the circuit breaker is closed during the process of inserting or pulling out the circuit breaker installation position, the first limiting portion (515) is limited by the circuit breaker installation position in the circuit breaker housing, and the rocker arm assembly (2) passes through the first limiter (515). The transmission structure (50) drives the trigger structure (51) to rotate relative to the first transmission structure (50), and the trigger structure (51) drives the first drive part (510) to move at the same time to drive the traction rod (6) to rotate, so that the operating mechanism is disengaged. buckle. 6 . The circuit breaker according to claim 5 , wherein the trigger structure ( 51 ) comprises a rotating mounting portion ( 511 ) and a first bearing portion, and the first bearing portion is provided above the drawbar ( 6 ). 7 . The trigger structure (51) is rotatably connected with the first transmission structure (50) through the rotating mounting portion (511), and the first bearing portion is connected with the rotating mounting portion (511), and the first bearing portion is connected with the rotating mounting portion (511). A driving portion (510) and a first limiting portion (515) are both disposed on the first bearing portion, and the first bearing portion is in position-limiting cooperation with the limiting portion (506) of the first transmission structure; Alternatively, the triggering structure (51) includes a second bearing portion, a rotating mounting portion and a third bearing portion which are connected in sequence, and the triggering structure (51) is rotatably connected to the first transmission structure (50) through the rotating mounting portion (511), The second bearing part is in driving cooperation with the drawbar (6), the first drive part (510) is arranged on the second bearing part, and the third bearing part is arranged above the drawbar (6) and along the direction parallel to the drawbar (6). extending in the direction, the first limiting portion (515) is disposed on the third bearing portion, and the third bearing portion and the limiting portion (506) of the first transmission structure are limitedly matched. 7. The circuit breaker according to any one of claims 1-6, characterized in that: the circuit breaker further comprises an anti-charged plug-in lock structure, and the anti-charged plug-in lock structure comprises a movably connected second transmission structure (10 ) and a limiting structure (11), the second transmission structure (10) also drives and cooperates with the rocker arm assembly (2), and the limiting structure (11) includes a second limiting portion (111); when the circuit breaker is closed , the rocker arm assembly (2) drives the second transmission structure (10) and the limiting structure (11) to act, so that the second limiting portion (111) protrudes from the outside of the circuit breaker housing, and is used to limit the installation position of the circuit breaker When the circuit breaker is opened, the second transmission structure (10) and the limiting structure (11) are reset, so that the second limiting portion (111) is moved into the circuit breaker housing; the circuit breaker is inserted or pulled out When the circuit breaker is closed during the installation position of the circuit breaker, the second limiting portion (111) is limited in the circuit breaker casing by the circuit breaker installation position. 8 . The circuit breaker according to claim 7 , wherein the anti-charged plug-in locking structure further comprises a second reset member ( 12 ), and the second reset member ( 12 ) applies reset to the limiting structure ( 11 ). 9 . force, so that the limit structure (11) and the second transmission structure (10) maintain the limit cooperation, and when the circuit breaker is in the closed state, the second limit portion (111) is also kept protruding outside the circuit breaker housing. . 9. The circuit breaker according to claim 7, characterized in that: the second transmission structure (10) is slidably arranged on the circuit breaker housing, and the sliding direction of the second transmission structure (10) is perpendicular to the insertion or Pull out the direction in which the circuit breaker is installed. 10. The circuit breaker according to claim 8, characterized in that: the second transmission structure (10) is rotatably connected to the limiting structure (11), and the second transmission structure (10) comprises a second transmission structure limiting portion (101), the second reset member (12) applies a reset force to the limit structure (11), so that the limit structure (11) and the limit part (101) of the second transmission structure include limit fit; the circuit breaker is inserted into Or during the process of pulling out the installation position of the circuit breaker, when the circuit breaker is closed, the second limiting part (111) is limited by the installation position of the circuit breaker in the circuit breaker casing, and the rocker arm assembly (2) passes through the second transmission structure ( 10) The limiting structure (11) is driven to rotate relative to the second transmission structure (10). 11. The circuit breaker according to claim 7, characterized in that: the anti-charged plug-in protection structure and the anti-charged plug-in lock structure are respectively located at both ends of the rocker arm assembly (2) in the swing direction, and the anti-charged plug The pull-out protection structure and the anti-charged plug-and-pull locking structure are both located on one side of the rocker arm assembly (2). 12. The circuit breaker according to claim 7, characterized in that: the circuit breaker further comprises a rotating rod assembly (3), and the rotating rod assembly (3) comprises a rotating rod (30) and a rotating rod rotating shaft (30-7) , the rotating rod (30) is pivotally arranged through the rotating rod rotating shaft (30-7); the rocker arm assembly (2) is drivingly matched with the rotating rod (30) to drive the rotating rod (30) to rotate, and the rotating rod (30) two The ends are respectively drivingly connected with the first transmission structure (50) and the second transmission structure (10). 13. The circuit breaker according to claim 12, characterized in that: the rotary rod assembly (3) further comprises a rotary rod reset member (8), and the rocker arm assembly (2) drives the circuit breaker to close while overcoming the rotary rod The resistance of the reset piece (8) drives the rotating rod (30) to rotate in the first direction, the rocker arm assembly (2) drives the circuit breaker to open, and at the same time the rotating rod reset piece (8) drives the rotating rod (30) to rotate in the second direction , the first direction and the second direction are opposite to each other. 14. The circuit breaker according to claim 12 or 13, wherein the first transmission structure (50) is a first push rod, the second transmission structure (10) is a second push rod, and the rotating rod (30) ) are respectively provided with a first rotary rod drive shaft (30-50) and a second rotary rod drive shaft (10-30), the first push rod is provided with a first waist-shaped hole (501), and the first rotary rod drives The shaft (30-50) is inserted in the first waist-shaped hole (501), the second push rod is provided with a second waist-shaped hole (105), and the second rotary rod drive shaft (10-30) is inserted in the second waist-shaped hole (105). Inside the waist-shaped hole (105), the rotating rod (30) rotates, and simultaneously drives the first push rod and the second push rod to slide linearly. 15. The circuit breaker according to claim 14, wherein the first push rod further comprises a first push rod sliding plate (502) and a first push rod sliding plate (502) respectively connected to both ends of the first push rod sliding plate (502). A push rod actuated plate (500) and a first push rod connecting plate (505), the first push rod actuated plate (500) is provided with a first waist-shaped hole (501), and the first push rod sliding plate (502) The trigger structure is rotatably mounted on the first push rod connecting plate (505), and the first transmission structure limiting portion (506) is arranged on the first push rod connecting plate (505). 16. The circuit breaker according to claim 14, wherein the second push rod further comprises a second push rod bearing plate (104), a second push rod transmission plate (103) and a second push rod force plate (104), which are connected in sequence. A push rod connecting plate (100), a second push rod receiving plate (104) is drivingly connected to the rotating rod (30), a second push rod transmission plate (103) is slidably arranged on the circuit breaker housing, and the limiting structure (11) ) is rotatably mounted on the second push rod connecting plate (100), and the second transmission structure limiting portion (101) is arranged on the second push rod connecting plate (100). 17. The circuit breaker according to any one of claims 1-6, characterized in that: the first limiting portion (515) directly or indirectly drives the traction rod (6) to rotate, so that the operating mechanism is tripped. 18. The circuit breaker according to any one of claims 1-6, characterized in that: the circuit breaker further comprises a magnetic flux assembly or a tripping mechanism (4), and when the circuit breaker is in a closed state, the first limit The part (515) is squeezed so that the first driving part (510) drives the magnetic flux assembly or the tripping mechanism (4) to act, and the magnetic flux assembly or the tripping mechanism (4) drives the traction rod (6) to rotate, so that the operating mechanism is released. buckle. 19. The circuit breaker according to claim 18, wherein the magnetic flux assembly comprises an assembly bracket (41), a third push rod (42) and a pull hook (43) mounted on the assembly bracket (41), The draw rod (6) includes a first matching plate (61), and the third push rod (42) includes a push rod hook (420) drivingly matched with the first matching plate (61); the first limiting portion (515) ) is squeezed, so that the first driving part (510) drives the hook (43) to release the limit on the third push rod (42), and the third push rod (42) moves and passes through the push rod hook (420) and the third push rod (42). A matching plate (61) drives the traction rod (6) to rotate, so that the operating mechanism is tripped. 20. The circuit breaker according to claim 19, wherein the magnetic flux assembly comprises a third push rod driving member (44), and the third push rod driving member (44) applies a force to the third push rod (42) The driving force causes the third push rod (42) to rotate, so as to drive the draw rod (6) to rotate through the push rod hook (420) and the first matching plate (61). 21. The circuit breaker according to claim 1, wherein the operating mechanism further comprises a mechanism bracket, a jumper, a lock, a re-fastener, a crank, a connecting rod, a main tension spring, a rocker arm assembly (2) The jumper, the lock and the re-fastener are respectively rotated and arranged on the mechanism bracket, the jumper and the lock are locked and matched, the lock and the re-fastener are limited and matched, and the re-fastener and the traction The rod (6) is driven and matched, the crank member is connected in rotation with the jumper, one end of the connecting rod is connected in rotation with the crank member, the other end is connected with the moving contact mechanism of the circuit breaker, and one end of the main tension spring is connected with the rocker arm assembly (2), The other end is connected with the crank member; The circuit breaker also includes a terminal, the terminal includes an incoming terminal and an outgoing terminal, the incoming terminal and the outgoing terminal are both located at the same end of the circuit breaker housing, and the terminal and the operating mechanism are respectively arranged at the circuit breaker. opposite ends of the housing.

Images