CN111681930A - breaker - Google Patents

Abstract

A circuit breaker includes a button mechanism and a lever mechanism, the button mechanism is connected with the lever mechanism, the button mechanism drives the circuit breaker to open and close through the lever mechanism, and also includes a button mechanism or the lever mechanism for driving the circuit breaker to close. The electromagnetic actuating mechanism has high reliability and long service life, and effectively solves the problems of wear or damage of the gears of the closing device of the motor and the gears or the misalignment of the gears, and the service life is low.

Description

breaker

technical field

The invention belongs to the field of low-voltage electrical appliances, and relates to a circuit breaker, in particular to an automatic opening and closing device of the circuit breaker.

Background technique

The plug-in circuit breaker used in the existing communication equipment improves the space utilization rate and the installation efficiency, but with the development of the Internet of Things technology, the plug-in circuit breaker in the existing technology cannot meet the requirements of remote monitoring and control. Most of the existing lever mechanisms with remote control are realized by motor and gear mechanism, which requires a lot of gears. Due to the limited use environment and design space, the wear or damage of gears or the misalignment of gears often cause the failure of the remote control function.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the defects of the prior art and provide a circuit breaker, which realizes automatic opening and closing based on an electromagnetic actuating mechanism.

To achieve the above object, the present invention has adopted the following technical solutions:

A circuit breaker includes a button mechanism and a lever mechanism, the button mechanism is connected with the lever mechanism, the button mechanism drives the circuit breaker to open and close through the lever mechanism, and also includes a button mechanism or the lever mechanism for driving the circuit breaker to close. Electromagnetic actuation mechanism.

Preferably, it also includes a tripper, and the action of the tripper triggers the tripping of the lever mechanism to open the circuit breaker.

Preferably, when a short circuit and/or an overload fault occurs in the line, the trip unit automatically triggers the lever mechanism to trip, and the trip unit receives a control signal to trigger the lever mechanism to trip.

Preferably, the electromagnetic actuating mechanism drives the button mechanism through the linkage lever to close the circuit breaker.

Preferably, the linkage rod is a material that can be magnetically attracted, the button mechanism includes a button with a button slot, one end of the linkage rod is connected to the electromagnetic actuating mechanism or the housing, and the other end of the linkage rod is installed on the button in the button slot.

Preferably, the linkage rod is rotatably installed in the circuit breaker housing, one end is set corresponding to the electromagnetic actuating mechanism, and the other end is set corresponding to the button mechanism. brake operation.

Preferably, the lever mechanism includes a rotating member, a second link, a jumper, a lock, and a main lever, the rotation member and the main lever are rotatably installed in the circuit breaker housing, and the jumper and the lock are respectively rotatably installed in the main lever. The lever is connected with a hasp, the rotating member is drivingly connected with the jumping buckle through the second link, connected with the button mechanism through the first link, the main lever is connected with the movable contact, and the lock spring is connected with the lock to provide The reset force of the lock to rotate in the direction of connection with the jumper hasp.

Preferably, it also includes an overload release, the button mechanism and the first connection terminal are arranged at one end of the circuit breaker, the second connection terminal is arranged at the other end of the circuit breaker, the lever mechanism is arranged in the middle of the circuit breaker, the The electromagnetic actuating mechanism and the first wiring terminal are located on the same side of the button mechanism, and the electromagnetic actuating mechanism is located between the lever mechanism and the first wiring terminal, and the arc extinguishing device and the release are arranged side by side and are located between the lever mechanism and the first wiring terminal. Between the second connection terminals, the overload release and the lever mechanism are arranged side by side, and the overload release is located between the electromagnetic actuating mechanism and the arc extinguishing device.

Preferably, the button mechanism includes a button, a button link, a button transmission rod and a first link connected in sequence, and the linkage rod drives the circuit breaker to close through the button or the button link or the button transmission rod.

Preferably, the linkage rod is slidably installed in the circuit breaker housing, one end of the linkage rod is set corresponding to the electromagnetic actuating mechanism, and the other end is matched with the button mechanism, and the electromagnetic actuating mechanism electrically drives the linkage rod to slide, so that the linkage rod drives the button mechanism Move to close.

Preferably, the release includes a shunt release at the front end and a short-circuit protection release at the rear, wherein the shunt release can accept a control signal to trigger the lever mechanism to trip, and the short-circuit protection mechanism can appear on the line When a short-circuit fault occurs, the lever mechanism is tripped, and the shunt release and the short-circuit protection release are integrated.

The circuit breaker of the present invention adopts the electromagnetic actuating mechanism to drive the button mechanism for closing, has high reliability and long service life, effectively solves the problem of wear or damage of the gears of the closing device of the motor and the gear or the misalignment between the gears, and the service life is low. problem, and the electromagnetic actuating mechanism moves quickly, which can drive the circuit breaker to close quickly.

In addition, the electromagnetic actuation mechanism is used to drive the button mechanism through the linkage rod, which will not affect the existing manual opening and closing action, and does not need to avoid the automatic opening and closing device like the existing automatic opening and closing scheme of the motor and gear mechanism. For the corresponding design of manual opening and closing operation, the structure is simple and reliable.

Description of drawings

1-2 is a schematic diagram of the internal layout of the first embodiment of the circuit breaker of the present invention in an open state;

3 is a schematic diagram of the internal layout of the first embodiment of the circuit breaker according to the present invention in a closed state;

4 is a schematic diagram of another embodiment of the circuit breaker button mechanism of the present invention;

5-6 are schematic diagrams of the internal layout of another embodiment of the circuit breaker of the present invention;

Fig. 7 is the schematic diagram of the opening state of A part in the embodiment of Fig. 5;

Fig. 8 is the schematic diagram of the closed state of part A in the embodiment of Fig. 5;

Fig. 9 is the motion trajectory diagram of the driving end of the linkage lever when the embodiment of Fig. 5 is opened and closed;

10-11 are schematic diagrams of the internal layout of another embodiment of the circuit breaker of the present invention.

Detailed ways

The specific embodiments of the circuit breaker of the present invention are further described below with reference to the accompanying drawings. The circuit breaker of the present invention is not limited to the description of the following embodiments.

A circuit breaker includes a circuit breaker housing 3, a button mechanism 1 and a lever mechanism 6, the button mechanism 1 is manually operated, the button mechanism 1 drives the circuit breaker to open and close through the lever mechanism 6, the electromagnetic actuation mechanism 2 and the button mechanism 1 or the lever mechanism 6 is used to drive the circuit breaker to close, the electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 when receiving the closing command, so that the button mechanism 1 slides and drives the circuit breaker to close through the lever mechanism 6, Realize the automatic closing of the remote control circuit breaker.

The circuit breaker of the present invention adopts the electromagnetic actuating mechanism 2 to drive the button mechanism 1 or the lever mechanism 6 for closing, which has high reliability and long service life, and effectively solves the problem of gear wear or damage or the coordination between the gears of the existing motor and gear closing device. Dislocation and low service life, and the electromagnetic actuating mechanism 2 moves quickly, which can drive the circuit breaker to close quickly. In particular, it is preferable that the electromagnetic actuating mechanism 2 drives the button mechanism 1 to close, and the electromagnetic actuating mechanism 2 is suitable for cooperating with the button mechanism 1 that moves linearly.

As a technical solution of the present invention, preferably, the circuit breaker further includes a release 7, and the action of the release 7 triggers the tripping of the lever mechanism 6 to open the circuit breaker, thereby realizing the automatic control of the circuit breaker by remote control. switch off. Through the cooperation of the electromagnetic actuating mechanism 2 and the button mechanism 1, and the cooperation of the release device 7 and the lever mechanism 6, the automatic opening and closing of the remote control circuit breaker is realized.

As another technical solution of the present invention, preferably, the electromagnetic actuating mechanism 2 cooperates with the button mechanism 1 to drive the circuit breaker to open and close. When the circuit breaker is in the open state, the electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 when receiving the closing command, so that the button mechanism 1 slides and drives the circuit breaker to close through the lever mechanism 6; at the same time, when the circuit breaker is closed In the brake state, the electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 when receiving the opening command, so that the button mechanism 1 slides and drives the circuit breaker to open through the lever mechanism 6 . The circuit breaker of this solution uses the same electromagnetic actuating mechanism 2 to drive the button mechanism 1 to open and close, which not only reduces the cost of the structure, but also has high reliability and long service life. At the same time, the electromagnetic actuating mechanism 2 acts quickly and can drive the circuit Quick switch on and off. As shown in Figures 1-3, the first embodiment of the circuit breaker of the present invention, the circuit breaker of this embodiment includes a circuit breaker housing 3, a button mechanism 1, an electromagnetic actuation mechanism 2, a lever mechanism 6, a movable contact 10, The static contact 11, the arc extinguishing device 9, the release 7; the button mechanism 1 is connected with the lever mechanism 6, the lever mechanism 6 is connected with the moving contact 10, and the static contact 11 is arranged in the circuit breaker housing 3 and is connected with the moving contact 10 corresponds to setting, pressing and pulling the button mechanism 1, and the button mechanism 1 drives the circuit breaker to close and open respectively through the lever mechanism 6. The electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 when receiving the closing command, so that the button mechanism 1 slides and drives the circuit breaker to close through the lever mechanism 6, so as to realize the automatic closing of the circuit breaker by remote control; 7. When receiving the opening command, the action triggers the tripping of the lever mechanism 6 to open the circuit breaker, so as to realize the automatic opening of the remote control circuit breaker.

Preferably, the electromagnetic actuating mechanism 2 and the release 7 can receive the closing signal and the opening signal of the upper computer through the signal terminal 5 provided on the circuit breaker housing 3, such as a smart terminal, an electric energy meter, Switch cabinets and other host computers. Alternatively, the electromagnetic actuating mechanism 2 and the release unit 7 can also receive the closing signal and the opening signal of the microcontroller inside the circuit breaker.

Preferably, the circuit breaker further includes an overload release 8, the lever mechanism 6 includes a snap-fit snap 64 and a lock 65, the overload release 8 includes a bimetal, and the bimetal is When overloaded, the lock 65 on the lever mechanism 6 is driven by bending, so that the lever mechanism 6 is tripped and the circuit breaker is opened. The release device 7 automatically triggers the lock 65 of the lever mechanism 6 when the circuit breaker fails, and the tripping makes the lever mechanism 6 trip to realize the circuit breaker opening; the release device 7 can be: Electromagnetic short-circuit release and/or overload release and/or leakage release, etc., automatically act to drive the latch 65 of the lever mechanism 6 when the circuit breaker is short-circuited, overloaded or leaked. For example, the release 7 is an oil damping release, which can have both short-circuit protection and overload protection functions. The release 7 can be controlled by the microcontroller when undervoltage or overvoltage is detected. gate protection. As shown in FIG. 2 , as a preferred embodiment, the release 7 includes a shunt release 72 located at the front end and a short-circuit protection release 73 located at the rear end, wherein the shunt release 72 can be controlled The signal triggers the tripping of the lever mechanism 6, and the short-circuit protection mechanism 73 can trigger the tripping of the lever mechanism 6 when the line has a short-circuit fault. The shunt release 72 and the short-circuit protection release 73 are integral structures.

As shown in FIG. 2 , the electromagnetic actuating mechanism 2 includes an electromagnetic main body provided with a coil 22 and a linkage rod 21 , and the electromagnetic main body drives the button mechanism 1 to open the circuit breaker through the linkage rod 21 . As shown in FIG. 2 , an embodiment of the electromagnetic actuating mechanism 2 in cooperation with the button mechanism 1 , the electromagnetic actuating mechanism 2 includes an electromagnetic body provided with a coil 22 and an iron linkage rod 21 , the linkage rod 21 As a material that can be magnetically attracted, the button mechanism 1 includes a button 101 with a button slot 102, the button 101 is drivingly connected to the lever mechanism 6 through a first link 106, and one end of the linkage rod 21 is connected to the electromagnetic actuator. The mechanism 2 or the housing 3 can swing around this end (the direct-acting type can also be provided), and the other end of the linkage rod 21 is installed in the button groove 102 of the button 101 .

As shown in Figure 2, the circuit breaker is in the open state. When the circuit breaker is automatically closed, when the coil 22 of the electromagnetic actuating mechanism 2 is powered on, the linkage rod 21 is attracted by the magnetic field of the coil, which drives the button 101 to move toward the circuit breaker. When the 101 moves, the first connecting rod 106 drives the rotating member 61 to rotate clockwise, and drives the connecting rod mechanism 6 to make the movable contact 10 and the static contact 11 contact and close, so as to realize automatic closing, and the coil of the electromagnetic actuating mechanism 2 is disconnected. Electric, the linkage rod 21 is reset by the linkage rod return spring, of course, the complex linkage rod return spring may not be provided. At this time, the circuit breaker is in the closed state shown in Figure 3.

As shown in FIG. 3 , the circuit breaker is in the closed state. When the circuit breaker is automatically opened, the release 7 is energized, and the action of the ejector rod 71 in the release 7 pushes the lock 65 of the lever mechanism 6 to rotate counterclockwise, and the lock 65 is released. Connected with the hasp of the trip button 63, the lever mechanism 6 is tripped to realize the opening of the circuit breaker, and the button spring drives the button 101 to reset.

As shown in FIG. 2 , the circuit breaker is in the open state. When manually closing, the button 101 is manually pressed to move into the circuit breaker. When the button 101 moves, the first link 106 drives the rotating member 61 to rotate clockwise to drive the link. The mechanism 6 makes the movable contact 10 and the static contact 11 contact and close to realize manual closing. At the same time, the button 101 also drives the linkage rod 21 to rotate to the position close to the electromagnetic body. At this time, the circuit breaker is in the closed state shown in FIG. 3 . .

As shown in FIG. 3 , the circuit breaker is in the closed state. When the circuit breaker is manually opened, manually pull the button 101 to move to the outside of the circuit breaker. When the button 101 moves, the first link 106 drives the rotating member 61 to rotate counterclockwise to drive the link. The mechanism 6 separates the movable contact 10 from the static contact 11 to realize manual opening. At the same time, the button 101 also drives the linkage rod 21 to rotate to a position relatively far away from the electromagnetic body. At this time, the circuit breaker is in the closed state shown in FIG. 3 .

Another improvement point of the electromagnetic actuating mechanism 2 using this solution is that it is not necessary to consider how to avoid the influence of the automatic opening and closing device on the manual opening and closing operation as in the existing automatic opening and closing solution of the motor and gear mechanism. The existing automatic opening and closing scheme of the motor and gear mechanism needs to set the micro switch or contact or sensor to monitor the closing position, opening position and or initial position of the motor or gear. To stop or reverse, a corresponding avoidance mechanism needs to be set on the gear mechanism or the button mechanism, so that after the motor and the gear mechanism drive the circuit breaker to close or open, the button mechanism can still be manually driven to open or close. operate. However, the electromagnetic actuating mechanism 2 of this solution does not need to be designed accordingly. The electromagnetic actuating mechanism 2 only has two states of pulling in and not pulling the linkage rod 21. When the linkage rod 21 is pulled in, the button 101 is driven to close, and then the electromagnetic activation When the coil 22 of the actuating mechanism 2 is powered off and the linkage lever 21 is no longer pulled in, the button 101 can be manually pulled, and the button 101 drives the linkage lever 21 to swing and reset, and the first link 106 drives the rotating member 61 to rotate counterclockwise to realize manual opening , the button 101 can also be pressed again to realize manual closing, and the structure is simple and does not affect each other.

As another embodiment, the electromagnetic actuating mechanism 2 can also drive the linkage rod 21 by means of an ejector rod, the linkage rod 21 can be a non-magnetic plastic part, and the linkage rod 21 is rotatably installed on the circuit breaker housing 3 Inside, one end corresponds to the ejector rod of the electromagnetic actuating mechanism 2, and the other end corresponds to the button mechanism 1. The electromagnetic actuating mechanism 2 receives electricity through the ejector rod to hit one end of the linkage rod 21, so that the other end of the linkage rod 21 drives the button mechanism 1. Move to close operation.

As another embodiment, the circuit breaker housing is provided with a sliding slot for linear sliding of the linkage rod 21 , one end of the linkage rod 21 is correspondingly arranged with the electromagnetic actuating mechanism 2 , and the other end is matched with the button mechanism 1 , and the electromagnetic actuating mechanism 2. The electricity drives the linkage rod 21 to slide, so that the linkage rod 21 drives the button mechanism 1 to move and close. The electromagnetic actuating mechanism 2 is electrically pulled and the linkage rod 21 slides, and the button mechanism 1 is closed by pulling the hook on the linkage rod 21; Mechanism 1 is closed. After the electromagnetic actuating mechanism 2 is powered off, the linkage rod 21 is reset by the linkage rod spring, or is driven to reset by the button mechanism 1 when the brake is re-opened.

As another degraded embodiment, two electromagnetic actuating mechanisms 2 can be provided, one is used to drive the button mechanism 1 to perform the closing operation, and the other is used to drive the button mechanism 1 to perform the opening operation, which is not triggered by the release 7 Open the brake, so many mechanisms are used, the circuit breaker is bulky and the cost is high.

As another embodiment, as shown in FIG. 4 , the button mechanism 1 includes a button 101 , a button link 103 , a button transmission rod 104 and a first link 106 , which are connected in sequence. The button transmission rod 104 is provided with a button protrusion 105 that cooperates with the linkage rod 21. In this embodiment, the button protrusion 105 is arranged on the button transmission rod 104. One end of the button 101 extends out of the circuit breaker housing 3 for operation. The rod 104 is linearly installed in the circuit breaker housing 3, and the button 101, the button link 103, the button transmission rod 104 and the first link 106 sequentially drive the lever mechanism 6 when the circuit breaker performs the opening and closing operation. The button link 103 and the button transmission rod 104 replace the relatively long button 101, and the button 101 or the button link 103 or the button transmission rod 104 can be easily matched with the plug-in locking mechanism. The linkage rod 21 is rotatably arranged in the circuit breaker housing 3, one end is correspondingly arranged with the electromagnetic actuating mechanism 2, and the other end is correspondingly arranged with the button protrusion 105. When the electromagnetic actuating mechanism 2 is energized, the linkage lever 21 is triggered to rotate, and the linkage is linked. The lever 21 drives the button transmission rod 104 to slide through the button protrusion 105 and drives the rotating member 61 to rotate counterclockwise through the first link 106 to realize closing, and also drives the button 101 to slide to the closing position shown in FIG. 3 to realize automatic closing. .

It should be noted that the button mechanism 1 can also be opened when pressed and closed when pulled, and the electromagnetic actuating mechanism 2 can also be set in a direction of rotation. side settings. The linkage rod 21 can be installed in a rotating manner, or can be installed in a direct motion. Corresponding limiting ribs or limiting grooves can also be set in the circuit breaker housing 3 to guide and limit the rotation range or sliding range of the linkage rod 21 . . The button mechanism 1 may be provided with a button groove 102, or may be provided with other matching structures such as button protrusions that cooperate with the linkage rod 21, which all belong to the protection scope of the present invention.

As shown in FIG. 3 , the button mechanism 1 includes a button 101 with a button slot 102 , the button 101 is drivingly connected to the lever mechanism 6 through the first connecting rod 106 , and the button spring is connected to the button 101 to drive to the outside of the circuit breaker housing 3 move. The lever mechanism of the present invention is a four/five link structure. As shown in FIG. 3 , which is an embodiment of the lever mechanism 6 of the present invention, the lever mechanism 6 includes a rotating member 61 , a second link 62 , and a jumper 63 . , lock 65, main lever 64, the rotating member 61 and the main lever 64 are rotatably installed in the circuit breaker housing 3, the jumper 63 and the lock 65 are respectively rotatably installed on the main lever 64 and connected by hasp, the said The rotating member 61 is drivingly connected with the jumper 63 through the second link 62, and is connected with the button mechanism 1 through the first link 106, the main lever 64 is connected with the movable contact 10, and the lock spring is connected with the lock 65 to provide a lock. The restoring force that the buckle 65 rotates in the direction of the buckle connection with the jump buckle 63 . Of course, the lever mechanism 6 can also adopt other four/five link structures.

Preferably, as shown in FIG. 1 , the circuit breaker in this embodiment is a plug-in circuit breaker, the button mechanism 1 and the first connection terminal 12 are arranged at one end of the circuit breaker, and the second connection terminal 4 and the signal terminal 5 are arranged at one end of the circuit breaker. At the other end of the circuit breaker, the lever mechanism 6 is arranged in the middle of the circuit breaker, the electromagnetic actuating mechanism 2 and the first terminal 12 are located on the same side of the button mechanism 1, and the electromagnetic actuating mechanism 2 is located in the lever mechanism 6 and the first connection terminal 12, the arc extinguishing device 9 and the release 7 are arranged side by side and between the lever mechanism 6 and the second connection terminal 4, the overload release 8 is side by side with the lever mechanism 6 The circuit breaker of this embodiment has a reasonable internal layout design, and the layout between the various components is compact, which can effectively reduce the overall size of the circuit breaker and meet the requirements of the circuit breaker. The development trend of miniaturization.

As another technical solution of the present invention, the electromagnetic actuating mechanism 2 cooperates with the lever mechanism 6 to drive the circuit breaker to close. For example, the electromagnetic actuating mechanism 2 drives the rotating member 61 to rotate in the closing direction to realize closing. One embodiment is that the rotating member 61 is protruded with a closing drive arm, and the electromagnetic actuating mechanism 2 triggers, pushes or pulls in to drive the closing drive arm when receiving the closing command, so that the rotating member 61 rotates in the closing direction. close. As another embodiment, the electromagnetic actuating mechanism 2 drives the rotating member 61 through the linkage rod 21 to close the circuit breaker, and the linkage rod 21 is rotatably mounted on the electromagnetic actuating mechanism 2 or the housing 3, and the electromagnetic actuating mechanism 2 receives When the closing command is performed, the linkage lever 21 is pushed or pulled, and the linkage lever 21 drives the rotating member 61 to rotate in the opening direction to realize the opening.

As shown in Figures 5-6, another embodiment of the circuit breaker of the present invention, this embodiment has the same overall structure and function as the first embodiment, including a circuit breaker casing 3, a button mechanism 1, an electromagnetic actuating mechanism 2, The lever mechanism 6 , the moving contact 10 , the static contact 11 , the arc extinguishing device 9 , the release 7 , the first wiring terminal 12 , the second wiring terminal 4 and the signal terminal 5 . The difference between this embodiment and the first embodiment is that the same electromagnetic actuating mechanism 2 cooperates with the button mechanism 1 to drive the circuit breaker to close and open.

When the circuit breaker is in the open state, manually press the button mechanism 1, the button mechanism 1 drives the circuit breaker to close through the lever mechanism 6, or when the coil 22 of the electromagnetic actuation mechanism 2 is powered on, the linkage rod 21 is attracted by the magnetic field of the coil. , drive the button mechanism 1 to move towards the inside of the circuit breaker, drive the circuit breaker to close, and then the electromagnetic actuating mechanism 2 is powered off.

When the circuit breaker is in the closed state, press the button mechanism 1 again to drive the circuit breaker to open through the lever mechanism 6 to realize manual opening; When the switch is closed, the button 101 is driven to move toward the inside of the circuit breaker, and the circuit breaker is driven to open, so as to realize automatic opening, and then the electromagnetic actuating mechanism 2 is powered off.

As shown in FIGS. 5-6 , the lever mechanism 6 includes a linkage lever 14 connected to the button mechanism 1 , the circuit breaker housing 3 is provided with a guide groove 31 , and one end of the linkage lever 14 is rotatably mounted on the button mechanism 1 . , the other end is the driving end 141, which is arranged in the guide groove 31. When the circuit breaker is in the open state, the button mechanism 1 is pressed, and the button mechanism 1 is driven to move inside the circuit breaker housing 3, and the button mechanism 1 drives the circuit breaker to close, and at the same time, the linkage lever The driving end 141 of 14 moves to the position where it cooperates with the latch 65 of the lever mechanism 6 under the guidance of the guide groove 31. When the circuit breaker is in the closed state, press the button mechanism 1 again, and the driving end 141 of the linkage lever 14 drives the latch. 65 is rotated, so that the lock 65 and the trip button 63 are released from the lock, and the lever mechanism 6 is tripped to open the circuit breaker, and the driving end 141 of the linkage lever 14 returns to the initial position.

As shown in Figures 7-9, the inner side wall of the circuit breaker housing 3 is provided with a guide groove 31 and a guide boss 311 located in the guide groove 31. The guide groove 31 surrounds the guide boss 311. When the button mechanism 1 is pressed The button mechanism 1 drives the driving end 141 of the linkage lever 14 to slide from the side of the guide boss 311 to the position where it cooperates with the lock catch 65, and after the button mechanism 1 is pressed again to drive the linkage lever 14 to trigger the lever mechanism 6 to trip to realize the opening of the circuit breaker, The button spring drives the button 101 to reset, and at the same time drives the driving end 141 of the linkage lever 14 to reset from the other side of the guide boss 311 .

In a specific preferred embodiment, as shown in FIGS. 7-9 , the guide groove 31 includes a first guide groove 310 , a second guide groove 312 , a third guide groove 313 , a fourth guide groove 314 and a third guide groove 310 , which are communicated in sequence. Five guide grooves 315 , the first guide groove 310 , the second guide groove 312 , the third guide groove 313 , the fourth guide groove 314 and the fifth guide groove 315 are connected to form an annular guide groove 31 surrounding the guide boss 311 . The guide groove 310 extends outward to form a Y shape with the second guide groove 312 and the fifth guide groove 315. The third guide groove 313 and the fourth guide groove 314 communicate with each other and are opposite to the guide side surface 316 on one side of the guide boss 311. The button mechanism 1. When the circuit breaker is closed, the driving end 141 of the driving linkage lever 14 enters the third guide groove 313 from the first guide groove 310 and the second guide groove 312. After the circuit breaker is closed, the button mechanism 1 is driven by the button spring. A slight reset (the part that is pressed more when closing or the reset of the overtravel part of the moving and static contacts), the button mechanism 1 drives the driving end 141 of the linkage lever 14 to enter the fourth guide groove 314 under the guidance of the guide side surface 316, and is connected with the The locks 65 are arranged oppositely; press the button mechanism 1 again, the button mechanism 1 drives the driving end 141 of the linkage lever 14 to move to the side away from the fifth guide groove 315 to trigger the lever mechanism 6 to trip to realize the opening, and then the button mechanism 1 is in the button. Under the driving of the spring, it is reset, and the driving end 141 of the linkage lever 14 is driven to return to the initial position of the first guide groove 310 from the fourth guide groove 314 and the fifth guide groove 315 .

Preferably, the second guide groove 312 is an inclined slope, and the edge surface of the highest slope of the slope of the second guide groove 312 is connected to the guide side surface 316 of the boss 311 and communicated with the third guide groove 313. The groove surface of the guide groove 313 is lower than that of the second guide groove 312 , so that the driving end 141 of the linkage lever 14 cannot return to the second guide groove 312 after entering the third guide groove 313 from the first guide groove 310 and the second guide groove 312 , but enter the fourth guide groove 314 along the guide side surface 316 . Further, the groove surface of the fourth guide groove 314 is lower than the groove surface of the third guide groove 313 , the fifth guide groove 315 is a guide slope, and the highest edge surface of the guide slope of the fifth guide groove 315 is connected to the first guide groove 310 , the connecting surface of the fifth guide groove 315 and the first guide groove 310 is higher than the first guide groove 310, so that when the circuit breaker is switched off, it cannot return from the fourth guide groove 314 to the third guide groove 313, but along the The fifth guide groove 315 returns to the first guide groove 310 .

Of course, it is used to realize the structure that the linkage lever 14 moves to the position where it cooperates with the latch 65 of the lever mechanism 6 when the circuit breaker is closed, so that when the button mechanism 1 is pressed again, the linkage lever 14 can drive the lever mechanism 6 to trip, To restore the linkage lever 14 to the initial position, other similar existing technical solutions can also be used.

In this embodiment, the structure of the lever mechanism 6 is the same as that of the first embodiment, and will not be repeated here. The locking buckle 65 is rotatably installed, and is provided with a buckle arm that is snap-fitted with the jump buckle 63, a first driving arm and a second driving arm that are respectively fitted with the release 7 and the overload release 8, and are linked with the The third driving arm matched with the lever 14, of course, the linkage lever 14 can also share a driving arm with the trip unit 7 and the overload trip unit 8. Of course, the trip unit 7 or the overload trip unit 8 may not be provided as required, and other protection trip units may be used.

In the circuit breaker of this embodiment, the circuit breaker is in the open state. When the circuit breaker is automatically closed, the electromagnetic actuating mechanism 2 is energized, and the linkage rod 21 is attracted by the electromagnetic force, which drives the button mechanism 1 to move to the right to close, and the button mechanism 1 The driving end 141 of the linkage lever 14 is driven to enter the third guide groove 313 , and the button mechanism 1 drives the rotating member 61 to rotate clockwise through the first link 106 , and drives the link mechanism 6 to make the movable contact 10 contact the static contact 11 Closing to realize automatic closing, after the electromagnetic actuation mechanism 2 is powered off, the linkage lever 21 is returned to the initial position by the spring reaction force, and the button mechanism 1 is driven by the button spring to reset a short stroke to the left and drive the linkage lever 14 The driving end 141 is guided into the fourth guide groove 314 under the guidance of the guide side surface 316 , and is disposed opposite to the lock catch 65 .

In the current closing state, when the switch is automatically opened, the electromagnetic actuating mechanism 2 is powered on again, the linkage lever 21 pulls in toward the coil 22 side, and drives the button mechanism 1 to move to the right, and the linkage lever 14 moves in the fourth guide slot in the direction of the arrow. 314 area slides, at this time, the driving end 141 pushes the latch 65, so that the trip latch 63 and the latch 65 are released from the hasp engagement, the lever mechanism 6 is disintegrated, and the circuit breaker is opened. After the coil is powered off, under the action of the button spring , the button mechanism 1 resets to the left and drives the linkage lever 14 to slide through the fifth guide groove 315 to the first guide groove 310 in the direction of the arrow to reset.

As another technical solution of the present invention, the electromagnetic actuating mechanism 2 cooperates with the lever mechanism 6 to drive the circuit breaker to open and close. For example, the electromagnetic actuating mechanism 2 drives the rotating member 61 to rotate to realize closing when receiving the closing command, and at the same time, the rotating member 61 also drives the button mechanism 1 to move into the circuit breaker housing 3, and the linkage lever 14 moves to the same position as the lever. The position where the latch 65 of the mechanism 6 fits. When receiving the closing command, the electromagnetic actuating mechanism 2 pushes the lever mechanism 6 to rotate in the same direction as when closing, and drives the button mechanism 1 to move into the circuit breaker housing 3, and the linkage lever 14 drives the latch 65 to realize the tripping and opening. . The electromagnetic actuating mechanism 2 may directly cooperate with the closing driving arm of the rotating member 61 , or may cooperate with the rotating member 61 through the linkage rod 21 .

It should be noted that, similar to the first embodiment, the electromagnetic actuating mechanism 2 can also use the ejector rod to drive the linkage rod 21, and the button mechanism 1 can adopt other schemes similar to FIG. 4, which belong to the protection scope of the present invention.

As shown in FIGS. 9-10 , the structure of the third embodiment of the present invention is basically the same as that of the embodiment in FIGS. 5-9 , the difference is that one end of the linkage lever 14 is connected to the electromagnetic actuating mechanism 2 instead of the button mechanism 1 . The circuit breaker housing 3 is provided with a guide groove 31 , one end of the linkage lever 14 is rotatably mounted on the linkage rod 21 , and the other end is the driving end 141 disposed in the guide groove 31 .

The electromagnetic actuating mechanism 2 drives the button mechanism 1 through a linkage rod 21 , one end of the linkage rod 21 is correspondingly arranged with the electromagnetic actuating mechanism 2 , and the other end is linked with the button mechanism 1 . As shown in Figure 9, the button mechanism 1 is provided with a button slot, one end of the linkage rod 21 is rotatably mounted on the circuit breaker housing 3 or the electromagnetic actuating mechanism 2, and the other end extends into the button slot to link with the button mechanism 1, and the electromagnetic actuator The actuating mechanism 2 pulls in or hits the linkage rod 21, and the button mechanism 1 drives the button mechanism 1. When the button mechanism 1 is pressed, the button mechanism 1 also drives the linkage rod 21 to move. When the circuit breaker is in the open state, the electromagnetic actuating mechanism 2 drives the linkage rod 21 to act, and the linkage rod 21 drives the button mechanism 1 to move inside the circuit breaker to close the circuit breaker to realize automatic closing, or press the button mechanism 1 to move to the circuit breaker. The internal movement of the circuit breaker causes the circuit breaker to be manually closed while the button mechanism 1 drives the linkage rod 21 . That is, the electromagnetic actuating mechanism 2 drives the linkage rod 21, or the button mechanism 1 drives the linkage rod 21, and the linkage rod 21 drives the linkage lever 14 to move the driving end 141 under the guidance of the guide groove 31 to the latch 65 of the lever mechanism 6. When the circuit breaker is in the closed state, the electromagnetic actuation mechanism 2 drives the linkage rod 21 to drive the button mechanism 1 to move inside the circuit breaker, or press the button mechanism 1 to move to the inside of the circuit breaker to drive the linkage rod 21, which drives the linkage lever 14. The driving end 141 drives the latch 65 to trip the lever mechanism 6 to open the circuit breaker, and the driving end 141 of the linkage lever 14 returns to the initial position.

The above content is a further detailed description of the present invention in combination 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 (11)

1. The utility model provides a circuit breaker, includes button mechanism (1) and lever mechanism (6), button mechanism (1) is connected with lever mechanism (6), button mechanism (1) drives circuit breaker divide-shut brake, its characterized in that through lever mechanism (6): the circuit breaker further comprises an electromagnetic actuating mechanism (2) which is matched with the button mechanism (1) or the lever mechanism (6) and used for driving the circuit breaker to be switched on.

2. The circuit breaker of claim 1, wherein: the circuit breaker is characterized by further comprising a release (7), wherein the release (7) acts to trigger the lever mechanism (6) to release so as to enable the circuit breaker to be opened.

3. The circuit breaker of claim 2, wherein: when a short circuit and/or overload fault occurs to a line, the tripper (7) automatically triggers the lever mechanism (6) to trip, and the tripper (7) receives a control signal to trigger the lever mechanism (6) to trip.

4. The circuit breaker of claim 1, wherein: the electromagnetic actuating mechanism (2) drives the button mechanism (1) through the linkage rod (21) to enable the circuit breaker to be switched on.

5. The circuit breaker of claim 4, wherein: the linkage rod (21) is made of a material capable of being attracted magnetically, the button mechanism (1) comprises a button (101) provided with a button groove (102), one end of the linkage rod (21) is connected to the electromagnetic actuating mechanism (2) or the shell (3), and the other end of the linkage rod (21) is installed in the button groove (102) of the button (101).

6. The circuit breaker of claim 4, wherein: the linkage rod (21) is rotatably installed in the breaker shell (3), one end of the linkage rod corresponds to the electromagnetic actuating mechanism (2), the other end of the linkage rod corresponds to the button mechanism (1), and when the electromagnetic actuating mechanism (2) is electrified, the linkage rod (21) is attracted or pushed to drive the button mechanism (1) to move so as to carry out switching-on operation.

7. The circuit breaker of claim 1, wherein: lever mechanism (6) are including rotating piece (61), second connecting rod (62), jump knot (63), hasp (65), main lever (64), rotate piece (61) and main lever (64) and rotate and install in circuit breaker casing (3), jump knot (63) and hasp (65) rotate respectively and install on main lever (64) and hasp connection, rotate piece (61) and jump knot (63) drive through second connecting rod (62) and be connected, be connected with button mechanism (1) through first connecting rod (106), main lever (64) are connected with moving contact (10), and the hasp spring is connected with hasp (65) and provides hasp (65) to the reset force that connects the direction pivoted with jump knot (63) hasp.

8. The circuit breaker of claim 2, wherein: still include overload release (8), button mechanism (1) and first binding post (12) set up the one end at the circuit breaker, and second binding post (4) set up the other end at the circuit breaker, lever mechanism (6) set up at the circuit breaker middle part, electromagnetic actuating mechanism (2) and first binding post (12) are located the same one side of button mechanism (1), just electromagnetic actuating mechanism (2) are located between lever mechanism (6) and first binding post (12), and arc extinguishing device (9) and release (7) set up side by side and are located between lever mechanism (6) and second binding post (4), overload release (8) set up side by side with lever mechanism (6), and overload release (8) are located between electromagnetic actuating mechanism (2) and arc extinguishing device (9).

9. The circuit breaker of claim 4, wherein: the button mechanism (1) comprises a button (101), a button connecting rod (103), a button transmission rod (104) and a first connecting rod (106) which are sequentially connected, and the linkage rod (21) drives the circuit breaker to be switched on through the button (101) or the button connecting rod (103) or the button transmission rod (104).

10. The circuit breaker of claim 4, wherein: the linkage rod (21) is slidably mounted in the breaker shell (3), one end of the linkage rod (21) is arranged corresponding to the electromagnetic actuating mechanism (2), the other end of the linkage rod is matched with the button mechanism (1), and the electromagnetic actuating mechanism (2) is electrified to drive the linkage rod (21) to slide, so that the linkage rod (21) drives the button mechanism (1) to move to perform switching-on.

11. The circuit breaker according to claim 2, characterized in that the release (7) comprises a shunt release (72) at the front end and a short-circuit protection release (73) at the rear end, wherein the shunt release (72) can be triggered by the control signal to trigger the lever mechanism (6), the short-circuit protection mechanism (73) can trigger the lever mechanism (6) to release when the short-circuit fault occurs to the circuit, and the shunt release (72) and the short-circuit protection release (73) are of an integrated structure.

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