CN216902751U - Circuit breaker - Google Patents

Abstract

A circuit breaker relates to the technical field of low-voltage electrical appliances. The circuit breaker comprises a cuboid shell, a ship-shaped handle, an electric operating mechanism, a manual operating mechanism, a moving contact, a static contact, an input terminal and an output terminal, wherein the ship-shaped handle, the electric operating mechanism, the manual operating mechanism, the moving contact, the static contact, the input terminal and the output terminal are respectively arranged in the shell; the electric operating mechanism and the manual operating mechanism are arranged in a stacked mode and are in transmission connection; the driven motion of the electric operating mechanism can drive the manual operating mechanism to move, so that the manual operating mechanism drives the moving contact to move to switch off or switch on with the fixed contact. The circuit breaker is reasonable in layout structure and can be miniaturized.

Description

Circuit breaker

Technical Field

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

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. When faults such as electric leakage, overload, short circuit and the like occur in the system, the circuit breaker can quickly cut off a fault mechanism in the system or cut off the power supply of the whole power supply so as to prevent the fault from being enlarged and avoid causing huge economic loss and casualties.

However, the traditional circuit breaker leads to the waste of the internal space of the circuit breaker because the internal space is unreasonable in design, structure or element arrangement, so that the whole structure compactness of the circuit breaker is poor, the whole volume is large, and the market demand for miniaturization of the circuit breaker is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit breaker which is reasonable in layout structure and beneficial to miniaturization of the circuit breaker.

The embodiment of the utility model is realized by the following steps:

the utility model provides a circuit breaker, which comprises a cuboid shell, and a ship-shaped handle, an electric operating mechanism, a manual operating mechanism, a moving contact, a fixed contact, an input terminal and an output terminal which are respectively arranged in the shell, wherein the ship-shaped handle drives the manual operating mechanism to switch on or off; the electric operating mechanism and the manual operating mechanism are arranged in a stacked mode and are in transmission connection; the driven motion of the electric operating mechanism can drive the manual operating mechanism to move, so that the manual operating mechanism drives the moving contact to move to switch off or switch on with the fixed contact. The circuit breaker is reasonable in layout structure and can be miniaturized.

Optionally, the housing includes a first housing and a second housing arranged side by side, the manual operating mechanism, the moving contact and the fixed contact are located in the first housing, and the electric operating mechanism is located in the second housing.

Optionally, the circuit breaker further includes a current measuring element disposed in the second housing, and a conductor of a protection pole loop of the circuit breaker passes through the current measuring element, and the current measuring element is configured to measure a current value of the protection pole loop.

Optionally, the manual operating mechanism includes a connecting rod, a support, a trip buckle and a lock catch, the boat-shaped handle and the support are respectively rotatably connected to the housing, the trip buckle, the lock catch and the moving contact are rotatably connected to the support, the connecting rod is connected between the boat-shaped handle and the trip buckle, one end of the lock catch, far away from the moving contact, abuts against the trip buckle, and the boat-shaped handle, the connecting rod and the support form a four-bar structure.

Optionally, the angle of rotation of the boat handle is between 15 ° and 60 °.

Optionally, the electric operating mechanism includes a gear set, a mating gear in transmission connection with the gear set, a first sector gear rotationally connected to the mating gear, a driving block fixedly connected to the mating gear, and a motor for driving the gear set to rotate; the driving block and the first sector gear are positioned on the same side of the matching gear; the boat-shaped handle is fixedly connected with a second sector gear; the motor positively drives the gear set to rotate, the gear set drives the matching gear to rotate, the matching gear drives the driving block to move so as to stir the first sector gear to rotate, and the first sector gear can drive the ship-shaped handle to rotate through the second sector gear so as to enable the circuit breaker to be switched on; the motor drives the gear set to rotate reversely, the gear set drives the matching gear to rotate, and the matching gear can drive the lock catch and the jump catch to be separated from the butt joint, so that the breaker is opened.

Optionally, the circuit breaker further comprises a short-circuit release for driving the opening of the manual operating mechanism, and the short-circuit release is positioned in an area enclosed by the boat-shaped handle and the manual operating mechanism.

Optionally, the circuit breaker further comprises an overload protector, one end of the overload protector extends to the middle of the manual operating mechanism, and the other end of the overload protector is connected with the output terminal; the overload protector is heated and bent, and can drive the manual operating mechanism to open the brake.

Optionally, be equipped with the cam on the cooperation gear, the hasp is close to the one side of cooperation gear and is equipped with cooperation portion, and the reverse drive gear group of motor rotates, and the gear train drives cooperation gear rotation, and the cooperation gear can be through the motion of cam drive cooperation portion to make hasp and jump the knot break away from the butt.

Optionally, a signal port is provided on the housing of the circuit breaker, and the signal port and the boat-shaped handle are located on the same side of the housing.

Optionally, the circuit breaker includes a circuit board, a spring, a first conductive pin and a second conductive pin, which are disposed in the housing, and the signal port, the spring, the first conductive pin and the second conductive pin are respectively disposed on the circuit board; one end of the spring is connected with the first conductive pin, and the other end of the spring is in contact with the second conductive pin in a natural state; when the breaker is switched on, the ship-shaped handle can drive the spring to be separated from the second conductive pin.

The beneficial effects of the utility model include:

the circuit breaker comprises a cuboid shell, a ship-shaped handle, an electric operating mechanism, a manual operating mechanism, a moving contact, a static contact, an input terminal and an output terminal, wherein the ship-shaped handle, the electric operating mechanism, the manual operating mechanism, the moving contact, the static contact, the input terminal and the output terminal are respectively arranged in the shell; the electric operating mechanism and the manual operating mechanism are arranged in a stacked mode and are in transmission connection; the driven motion of the electric operating mechanism can drive the manual operating mechanism to move, so that the manual operating mechanism drives the moving contact to move to switch off or switch on with the fixed contact. According to the breaker, the electric operating mechanism and the manual operating mechanism are respectively arranged in the cuboid shell, so that intelligent opening and intelligent closing of the breaker can be realized, and the problem that the breaker is inconvenient to remotely operate in the prior art is solved; in addition, the electric operating mechanism and the manual operating mechanism are arranged in a stacked mode, and the structures of the circuit breaker are integrated in the rectangular shell, so that the overall layout of the circuit breaker can be optimized, the length of the circuit breaker is shortened to a certain extent, the circuit breaker is further favorably miniaturized, and the circuit breaker is conveniently installed in a narrow space; and this application can also effectively avoid the manual operation mechanism of circuit breaker to take place the motion with electric operating mechanism when the motion and interfere, and then improve the operational reliability of circuit breaker.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a circuit breaker according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a manual operating mechanism according to an embodiment of the present invention;

FIG. 4 is a second schematic structural diagram of a manual operating mechanism according to an embodiment of the present invention;

fig. 5 is a third schematic structural diagram of a manual operating mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an electric operating mechanism according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of an electric operating mechanism according to an embodiment of the present invention;

fig. 8 is a third schematic structural diagram of an electric operating mechanism according to an embodiment of the present invention;

fig. 9 is a third schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Icon: 10-a housing; 11-a first housing; 12-a second housing; 20-an electric operating mechanism; 21-a motor; 22-gear set; 23-mating gears; 24-a first sector gear; 25-a drive block; 26-a cam; 30-a manual operating mechanism; 31-boat-shaped handle; 32-connecting rod; 33-a scaffold; 34-jump buttons; 35-locking; 36-a second sector gear; 40-moving contact; 41-tension spring; 50-a static contact; 60-a current measuring element; 70-a signal port; 81-a circuit board; 821-a spring; 822-a first conductive pin; 823-second conductive pins; 91-input terminal; 92-an output terminal; 93-short circuit release; 94-an overload protector; 95-a push rod; 96-linkage rod; a-an electric operation initial position; b-opening position of the ship-shaped handle; c-ship type handle closing position.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, 2 and 9, the present embodiment provides a circuit breaker, which includes a rectangular parallelepiped housing 10, and a boat-shaped handle 31, an electric operating mechanism 20, a manual operating mechanism 30, a movable contact 40, a fixed contact 50, an input terminal 91 and an output terminal 92, which are respectively disposed in the housing 10, wherein the boat-shaped handle 31 drives the manual operating mechanism 30 to close or open a brake, the input terminal 91 and the output terminal 92 are respectively connected to the manual operating mechanism 30 to form a conductive loop, the boat-shaped handle 31 is located on one side of the housing 10, the input terminal 91 and the output terminal 92 are located on the other side of the housing 10 opposite to the housing 10, and the manual operating mechanism 30 is located between the boat-shaped handle 31 and the output terminal 92; wherein, the electric operating mechanism 20 and the manual operating mechanism 30 are arranged in a stacked manner and are in transmission connection; the driven movement of the electric operating mechanism 20 can drive the manual operating mechanism 30 to move, so that the manual operating mechanism 30 drives the movable contact 40 to move to open or close the fixed contact 50. This circuit breaker layout structure is reasonable, can do benefit to the circuit breaker miniaturization.

Wherein, this application adopts rectangular casing 10, like this, convex part can be saved to the circuit breaker of this application to convex casing 10 relatively, and then reduces the volume of circuit breaker to a certain extent.

Optionally, the circuit breaker further comprises an input terminal 91 and an output terminal 92, the input terminal 91 and the output terminal 92 being located on the same side of the housing 10, and the input terminal 91 and the boat handle 31 being located on opposite sides of the housing 10. Thus, the output terminal 92 and the input terminal 91 can be prevented from occupying the operation space of the boat handle 31, and more space can be saved for the operation of the boat handle 31. The input terminal 91 and the output terminal 92 may be of a plug-in type. Like this, relative prior art adopts the screw wiring, this application adopts this kind of plug-in input terminal 91 and output terminal 92, can be convenient for the circuit breaker in the connection setting of rack.

The electric operating mechanism 20 and the manual operating mechanism 30 are both arranged in the housing 10, wherein the manual operating mechanism 30 can directly drive the moving contact 40 to move so as to switch on or off the moving contact 40 and the static contact 50; the electric operating mechanism 20 can be moved by driving the manual operating mechanism 30 to open or close the moving contact 40 and the stationary contact 50. This application can realize the intelligence separating brake or the intelligence combined floodgate of circuit breaker through setting up electric operating mechanism 20 and manually operation mechanism 30 to solve the inconvenient problem of remote operation circuit breaker separating brake or combined floodgate among the prior art.

In the present embodiment, the electric operating mechanism 20 and the manual operating mechanism 30 are stacked (the electric operating mechanism 20 and the manual operating mechanism 30 are arranged in a direction perpendicular to the paper surface in accordance with the orientation in fig. 3), so that the length of the circuit breaker can be shortened (the length direction of the circuit breaker corresponds to the horizontal direction in fig. 3) and the length of the circuit breaker can be shortened in comparison with the case where the electric operating mechanism 20 and the manual operating mechanism 30 are arranged in a straight line, and the circuit breaker can be easily mounted in a narrow space. In addition, the electric operating mechanism 20 and the manual operating mechanism 30 are arranged in a stacked manner, so that the manual operating mechanism 30 is prevented from moving and interfering with the electric operating mechanism 20 when moving, and the working reliability of the circuit breaker in the operating process is further ensured.

To sum up, the circuit breaker provided by the present application includes a rectangular parallelepiped housing 10, and a boat-shaped handle 31, an electric operating mechanism 20, a manual operating mechanism 30, a movable contact 40, a fixed contact 50, an input terminal 91 and an output terminal 92, which are respectively disposed in the housing 10, the boat-shaped handle 31 drives the manual operating mechanism 30 to switch on or off, the input terminal 91 and the output terminal 92 are respectively connected with the manual operating mechanism 30 to form a conductive loop, the boat-shaped handle 31 is located on one side of the housing 10, the input terminal 91 and the output terminal 92 are located on the other side of the housing 10, and the manual operating mechanism 30 is located between the boat-shaped handle 31 and the output terminal 92; wherein, the electric operating mechanism 20 and the manual operating mechanism 30 are arranged in a stacked manner and are in transmission connection; the driven movement of the electric operating mechanism 20 can drive the manual operating mechanism 30 to move, so that the manual operating mechanism 30 drives the movable contact 40 to move to open or close the fixed contact 50. According to the breaker switching-off device, the electric operating mechanism 20 and the manual operating mechanism 30 are respectively arranged in the cuboid shell 10, so that intelligent switching-off and intelligent switching-on of the breaker can be realized, and the problem that the breaker is inconvenient to remotely operate in the prior art is solved; in addition, the electric operating mechanism 20 and the manual operating mechanism 30 are arranged in a stacked mode, and the structures of the circuit breaker are integrated in the rectangular shell 10, so that the overall layout of the circuit breaker can be optimized, the length of the circuit breaker is shortened to a certain extent, the circuit breaker is further favorably miniaturized, and the circuit breaker is conveniently installed in a narrow space; in addition, the manual operating mechanism 30 of the circuit breaker can be effectively prevented from moving and interfering with the electric operating mechanism 20 when moving, and the working reliability of the circuit breaker is further improved.

Alternatively, referring to fig. 1 and fig. 2, the housing 10 includes a first housing 11 and a second housing 12 arranged side by side, the manual operating mechanism 30, the movable contact 40 and the stationary contact 50 are located in the first housing 11, and the electric operating mechanism 20 is located in the second housing 12.

In the present invention, the manual operation mechanism 30 is provided in the first housing 11, and the electric operation mechanism 20 is provided in the second housing 12, so that the manual operation mechanism 30 can be further prevented from interfering with the electric operation mechanism 20 during movement. In the present invention, the electric operating mechanism 20 is configured to switch on and off by driving the manual operating mechanism 30, and therefore, the manual operating mechanism 30 and the electric operating mechanism 20 are correspondingly connected to each other to realize transmission connection therebetween. The arrangement form of the transmission member is not limited in the present application. For example, when the electric operating mechanism 20 drives the circuit breaker to close, the electric operating mechanism 20 may drive the boat handle 31 of the manual operating mechanism 30 to move through a transmission to close; when the electric operating mechanism 20 drives the circuit breaker to open the brake, the electric operating mechanism 20 drives the trip catch 34 and the lock catch 35 of the manual operating mechanism 30 to unlock through a transmission piece so as to open the circuit breaker.

In this embodiment, the circuit breaker further includes a current measuring element 60 disposed in the second housing 12, and a conductor of a protection pole loop of the circuit breaker passes through the current measuring element 60, and the current measuring element 60 is used for measuring a current value of the protection pole loop.

The current measuring element 60 may be a current transformer (which may be connected to the protection pole loop through a wire) or a shunt (which may be welded to the protection pole loop). By arranging the current measuring element 60 in the second housing 12 where the electric operating module is placed, the current measuring element 60 can still be lowered even if the height and space of the circuit breaker are reduced; secondly, the space in the shell 10 of the circuit breaker can be reasonably utilized in a limited space, so that the space utilization rate is maximized.

In the present embodiment, referring to fig. 3 to fig. 5, the manual operating mechanism 30 includes a connecting rod 32, a bracket 33, a trip buckle 34 and a latch 35, the boat-shaped handle 31 and the bracket 33 are respectively rotatably connected to the housing 10, the trip buckle 34, the latch 35 and the movable contact 40 are rotatably connected to the bracket 33, the connecting rod 32 is connected between the boat-shaped handle 31 and the trip buckle 34, one end of the latch 35 away from the movable contact 40 abuts against the trip buckle 34, and the boat-shaped handle 31, the connecting rod 32 and the bracket 33 form a four-bar 32 structure.

In this embodiment, the rotation angle of the boat handle 31 is between 15 ° and 60 °.

Wherein, the boat-shaped handle 31 and the bracket 33 are rotatably connected to the housing 10, and the jump buckle 34, the lock catch 35 and the movable contact 40 are rotatably connected to the bracket 33. Thus, when the trip latch 34 and the latch 35 are abutted (i.e., locked), the latch 35, the trip latch 34, and the movable contact 40 move together as one unit, and can be closed by the driving of the boat handle 31 through the link 32; when the latch 35 and the jumper 34 are released from abutment (i.e., unlocked), the movable contact 40 can be opened by the tension spring 41.

Referring to fig. 4 and 5, the boat handle 31, the link 32, the jump buckle 34, and the lock catch 35 can form a four-link 32 structure. Wherein, the distance from the rotation center of the boat handle 31 to the end of the connecting rod 32 connected with it forms a first rod, the distance between the two ends of the connecting rod 32 forms a second rod, the distance from the end of the connecting rod 32 far away from the boat handle 31 to the rotation center of the bracket 33 (i.e. the rotation center of the lock catch 35) forms a third rod, and the distance from the rotation center of the boat handle 31 to the rotation center of the bracket 33 forms a fourth rod. The manual operating mechanism 30 of the present application can enable the ship-shaped handle 31 to realize normal opening and closing operations of the mechanism at a small rotation angle (between 15 ° and 60 °), and can enable the distance between the movable contact 40 and the fixed contact 50 to meet the design requirements of the circuit breaker, by means of the design of the four-bar linkage 32. Thus, the ship-shaped handle 31 can reduce the rotation amplitude as much as possible when rotating, and further effectively reduce the width of the circuit breaker. The width direction of the circuit breaker referred to herein is the vertical direction in fig. 4, corresponding to the orientation shown in fig. 4.

Referring to fig. 6 to 8, the electric operating mechanism 20 includes a gear set 22, a mating gear 23 in transmission connection with the gear set 22, a first sector gear 24 rotatably connected to the mating gear 23, a driving block 25 fixedly connected to the mating gear 23, and a motor 21 for driving the gear set 22 to rotate; the driving block 25 and the first sector gear 24 are located on the same side of the mating gear 23; the boat-shaped handle 31 is fixedly connected with a second sector gear 36; the motor 21 positively drives the gear set 22 to rotate, the gear set 22 drives the matching gear 23 to rotate, the matching gear 23 drives the driving block 25 to move so as to stir the first sector gear 24 to rotate, and the first sector gear 24 can drive the boat-shaped handle 31 to rotate through the second sector gear 36 so as to close the circuit breaker; the motor 21 drives the gear set 22 to rotate reversely, the gear set 22 drives the matching gear 23 to rotate, and the matching gear 23 can drive the lock catch 35 and the trip catch 34 to be separated from abutting connection, so that the breaker is opened.

It should be noted that the specific arrangement of the gear set 22 is not limited in this application, and for example, as shown in fig. 6 and 7, the gear set 22 may include two gears. Of course, in other embodiments, the gear set 22 may be specifically designed by one skilled in the art based on the size of the circuit breaker housing 10.

The matching gear 23 is in transmission connection with the gear set 22, and the gear set 22 rotates to drive the matching gear 23 to rotate, so that the matching gear 23 drives the driving block 25 to rotate (the driving block 25 is fixedly connected to one surface of the matching gear 23, which is provided with the first sector gear 24).

The first sector gear 24 and the mating gear 23 use the same rotational shaft, and in this embodiment, the first sector gear 24 is rotatably connected to the mating gear 23. Thus, when the matching gear 23 drives the driving block 25 to rotate, the first sector gear 24 does not rotate, but when the driving block 25 rotates to a certain position, the driving block 25 can stir the first sector gear 24 to rotate, so that the first sector gear 24 rotates from the ship-shaped handle opening position B to the ship-shaped handle closing position C, and the first sector gear 24 drives the second sector gear 36 to close; or the first sector gear 24 is shifted to rotate, so that the first sector gear 24 rotates from the ship-shaped handle closing position C to the ship-shaped handle opening position B, and the first sector gear 24 drives the second sector gear 36 to open the lock.

It should be noted that, in this embodiment, the second sector gear 36 is fixedly connected to the boat handle 31, so that the rotation of the second sector gear 36 can drive the boat handle 31 to rotate, thereby opening or closing the brake.

The driving block 25 may be a projection provided on the mating gear 23.

Optionally, referring to fig. 7 and 8, the cam 26 is disposed on the mating gear 23, a mating portion is disposed on a side of the latch 35 close to the mating gear 23, the motor 21 drives the gear set 22 to rotate in a reverse direction, and the gear set moves to disengage the latch 35 from the jumper 34. That is, when the circuit breaker is driven to open the brake by the electric operating mechanism 20, the cam 26 on the engaging gear 23 drives the engaging portion on the latch 35 to move, so that the latch 35 and the trip 34 are unlocked, and the brake is opened.

The operating principle of the electric operating mechanism 20 to open or close is as follows:

initial state: the drive block 25 is in the electrically operated initial position a, the cam 26 is in the initial position, the first sector gear 24 is in the boat handle open position B, and the circuit breaker is open, as shown in fig. 3 and 7.

A closing process: the motor 21 rotates in the forward direction, the motor 21 drives the gear set 22 to rotate, the gear set 22 drives the matching gear 23 to rotate, the matching gear 23 rotates to drive the driving block 25 to rotate in the same direction as the driving block, at this time, the driving block 25 can stir the first sector gear 24 to rotate, so that the first sector gear 24 is meshed with the second sector gear 36, and the ship-shaped handle moves to the ship-shaped handle closing position C. At the same time, the second sector gear 36 will drive the boat handle 31 to rotate, so that the boat handle 31 drives the entire manual operating mechanism 30 to close, as shown in fig. 4. After the circuit breaker is switched on, the motor 21 rotates reversely, so that the motor 21 drives the gear set 22 to rotate, the gear set 22 drives the matching gear 23 to rotate, the matching gear 23 can be reset, and the driving block 25 rotates to the electric operation initial position a to prepare for subsequent switching-off, as shown in fig. 8.

The brake opening process: the motor 21 rotates reversely, the motor 21 drives the matching gear 23 to rotate through the gear set 22, the matching gear 23 drives the cam 26 to rotate, so that the cam 26 drives the latch 35 of the manual operating mechanism 30 to move through the matching part, and the latch 35 and the trip buckle 34 are released from abutting (namely unlocked), so that the movable contact 40 of the circuit breaker is separated from the fixed contact 50 under the action of the tension spring 41; simultaneously, at the in-process of circuit breaker separating brake, also can drive ship type handle 31 and rotate, and then make ship type handle 31 drive second sector gear 36 and rotate, like this, second sector gear 36 will drive first sector gear 24 and rotate to make first sector gear 24 rotate to ship type handle separating brake position B. After the circuit breaker is opened, the motor 21 rotates in the forward direction, so that the motor 21 drives the gear set 22 to rotate, the gear set 22 drives the matching gear 23 to rotate, and the matching gear 23 can be reset, so that the cam 26 can rotate to the initial position, as shown in fig. 7.

Referring to fig. 2 and 3, optionally, a signal port 70 is provided on the housing 10 of the circuit breaker, and the signal port 70 and the boat handle 31 are located on the same side of the housing 10. The signal port 70 is used for connecting with an external device, and is used for outputting an opening signal or a closing signal of the circuit breaker to the external device.

In this embodiment, the circuit breaker includes a circuit board 81, a spring 821, a first conductive pin 822 and a second conductive pin 823 which are arranged in the housing 10, and the signal port 70, the spring 821, the first conductive pin 822 and the second conductive pin 823 are respectively arranged on the circuit board 81; one end of the spring 821 is connected to the first conductive pin 822, and the other end thereof is in contact with the second conductive pin 823 in a natural state; when the breaker is closed, the boat handle 31 can drive the spring 821 to be separated from the second conductive pin 823.

Among them, the spring 821 may be a torsion spring. Thus, when the breaker is opened or closed, the boat handle 31 rotates, so that one end of the spring 821 (i.e., one end contacting the second conductive pin 823) is driven to move relatively, and the spring 821 is separated from the second conductive pin 823. The first conductive pin 822 and the second conductive pin 823 are both arranged on the indicating circuit of the circuit board 81, and when the second conductive pin 823 contacts the spring 821, the first conductive pin 822 and the second conductive pin 823; when the second conductive pin 823 is separated from the spring 821, the first conductive pin 822 and the second conductive pin 823 are disconnected, and the circuit breaker can output an opening signal or a closing signal of the circuit breaker according to the connection and disconnection of the first conductive pin 822 and the second conductive pin 823 through an indication circuit on the circuit board 81.

Referring to fig. 2 and 3, in the present embodiment, the circuit breaker further includes a short circuit release 93 for driving the manual operating mechanism 30 to open the gate, and the short circuit release 93 is located in an area enclosed by the boat handle 31 and the manual operating mechanism 30.

The circuit breaker further includes an overload protector 94, one end of the overload protector 94 extends to the middle of the manual operating mechanism 30, and the other end is connected with the output terminal 92; the overload protector 94 is heated and bent, and can drive the manual operating mechanism 30 to open.

When the current passing through the circuit breaker is greater than the set short-circuit action current, the short-circuit release 93 acts, as shown in fig. 3, the moving core of the short-circuit release 93 pushes the push rod 95 to move rightwards, the push rod 95 pushes the lower part of the latch 35 to enable the latch 35 to rotate anticlockwise, the latch 35 is separated from the trip 34, the moving contact 40 is far away from the static contact 50 under the action of the tension spring 41, and the circuit breaker is disconnected.

When the passing current of the circuit breaker is greater than the rated current, the overload protector 94 heats and bends, the lower end of the overload protector 94 is fixed at one end of the arc striking plate, the upper end moves rightwards to push the linkage rod 96 connected with the latch 35 to move, the linkage rod 96 enables the latch 35 to be separated from the trip buckle 34, the movable contact 40 is far away from the static contact 50 under the action of the tension spring 41, and the circuit breaker is disconnected.

The above description is only an alternative embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

Claims (10)

1. The circuit breaker is characterized by comprising a cuboid shell (10), and a ship-shaped handle (31), an electric operating mechanism (20), a manual operating mechanism (30), a movable contact (40), a fixed contact (50), an input terminal (91) and an output terminal (92) which are arranged in the shell (10) respectively, wherein the ship-shaped handle (31) drives the manual operating mechanism (30) to switch on or off, the input terminal (91) and the output terminal (92) are connected with the manual operating mechanism (30) respectively to form a conductive loop, the ship-shaped handle (31) is positioned on one side of the shell (10), the input terminal (91) and the output terminal (92) are positioned on the other side opposite to the shell (10), and the manual operating mechanism (30) is positioned between the ship-shaped handle (31) and the output terminal (92); wherein the electric operating mechanism (20) and the manual operating mechanism (30) are arranged in a stacked manner and are in transmission connection;

the driven movement of the electric operating mechanism (20) can drive the manual operating mechanism (30) to move, so that the manual operating mechanism (30) drives the moving contact (40) to move to be switched off or switched on with the static contact (50).

2. The circuit breaker according to claim 1, characterized in that said housing (10) comprises a first housing (11) and a second housing (12) arranged side by side, said manual operating mechanism (30), said movable contacts (40) and said stationary contacts (50) being located in said first housing (11), said electric operating mechanism (20) being located in said second housing (12).

3. The circuit breaker according to claim 2, characterized in that the circuit breaker further comprises a current measuring element (60) provided in the second housing (12), and a conductor of a protection pole circuit of the circuit breaker passes through the current measuring element (60), the current measuring element (60) being configured to measure a current value of the protection pole circuit.

4. The circuit breaker according to any one of claims 1 to 3, wherein the manual operating mechanism (30) comprises a connecting rod (32), a support (33), a trip buckle (34) and a lock catch (35), the boat-shaped handle (31) and the support (33) are respectively rotatably connected to the housing (10), the trip buckle (34), the lock catch (35) and the movable contact (40) are rotatably connected to the support (33), the connecting rod (32) is connected between the boat-shaped handle (31) and the trip buckle (34), one end of the lock catch (35) far away from the movable contact (40) abuts against the trip buckle (34), and the boat-shaped handle (31), the connecting rod (32) and the support (33) form a four-bar linkage (32) structure.

5. The circuit breaker according to claim 4, characterized in that the rotation angle of the boat handle (31) is between 15 ° -60 °.

6. The circuit breaker according to claim 4, wherein the electric operating mechanism (20) comprises a gear set (22), a mating gear (23) in transmission connection with the gear set (22), a first sector gear (24) in rotational connection with the mating gear (23), a driving block (25) fixedly connected to the mating gear (23), and a motor (21) for driving the gear set (22) to rotate; the driving block (25) and the first sector gear (24) are located on the same side of the mating gear (23); a second sector gear (36) is fixedly connected to the boat-shaped handle (31);

the motor (21) drives the gear set (22) to rotate in a forward direction, the gear set (22) drives the matching gear (23) to rotate, the matching gear (23) drives the driving block (25) to move so as to shift the first sector gear (24) to rotate, and the first sector gear (24) can drive the boat-shaped handle (31) to rotate through the second sector gear (36) so as to enable the circuit breaker to be switched on; motor (21) back drive gear train (22) rotate, gear train (22) drive cooperation gear (23) rotate, cooperation gear (23) can drive hasp (35) with jump and detain (34) and break away from the butt, so that the circuit breaker separating brake.

7. The circuit breaker of claim 1 further comprising a short circuit release (93) for actuating opening of said manually operated mechanism (30), said short circuit release (93) being located within an area enclosed by said boat handle (31) and said manually operated mechanism (30).

8. The circuit breaker according to claim 1 or 7, characterized in that the circuit breaker further comprises an overload protector (94), one end of the overload protector (94) extends to the middle of the manual operating mechanism (30), and the other end is connected with the output terminal (92); the overload protector (94) is heated and bent, and can drive the manual operating mechanism (30) to open.

9. The circuit breaker of claim 1, wherein the circuit breaker housing (10) is provided with a signal port (70), and the signal port (70) and the boat handle (31) are located on the same side of the housing (10).

10. The circuit breaker according to claim 9, characterized in that it comprises a circuit board (81), a spring (821), a first conductive pin (822) and a second conductive pin (823) provided inside said casing (10), said signal port (70), said spring (821), said first conductive pin (822) and said second conductive pin (823) being provided on said circuit board (81), respectively; one end of the spring (821) is connected with the first conductive needle (822), and the other end of the spring is in contact with the second conductive needle (823) in a natural state; when the breaker is closed, the boat-shaped handle (31) can drive the spring (821) to be separated from the second conductive pin (823).

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