CN212542325U - Electromagnetic operating mechanism and circuit breaker - Google Patents

Abstract

The utility model discloses an electromagnetic operation mechanism and circuit breaker relates to circuit breaker technical field. The electromagnetic operating mechanism is used for connecting the switching-on/off brake assembly, and comprises a driving assembly and a linkage assembly, the driving assembly comprises an electromagnetic assembly and a push-pull rod connected with the electromagnetic assembly, one end of the linkage assembly is connected with the push-pull rod, the other end of the linkage assembly is connected with the switching-on/off brake assembly, the electromagnetic assembly drives the push-pull rod to do reciprocating motion, so that the push-pull rod can respectively move along a first direction and a second direction which are opposite to each other, the push-pull rod enables the switching-on/off brake assembly to respectively move along a third direction and a fourth direction which are opposite to each other through the linkage assembly, and then automatic switching-on. The circuit breaker comprising the electromagnetic operating mechanism not only can automatically switch on and switch off, but also has high integration degree and small occupied space.

Description

Electromagnetic operating mechanism and circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field particularly, relates to an electromagnetic operating mechanism and 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. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is a switching device which can not only connect and disconnect normal load current and overload current, but also connect and disconnect short-circuit current. The low-voltage circuit breaker has certain protection functions such as overload, short circuit, undervoltage and leakage protection besides the function of starting control in the circuit.

The circuit breaker is divided into: the plug-in circuit breaker, the fixed circuit breaker and the drawer type circuit breaker are arranged, the safety of the use industry of electrical equipment can be effectively improved by using the plug-in circuit breaker, the plug-in circuit breaker is widely applied to the communication industry and other industries, and the communication industry has the characteristic of timely feedback, so that the remote control capability of products is required.

The operating mechanism of the existing miniature circuit breaker capable of being remotely operated is spliced, the occupied space is large, the arrangement of wires is not facilitated, and the existing plug-in miniature circuit breaker is not provided with an automatic operating mechanism and cannot realize the function of automatic opening and closing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electromagnetic operation mechanism and circuit breaker to solve the technical problem that miniature circuit breaker among the prior art can not automatic divide-shut brake.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides an aspect provides an electromagnetic operation mechanism for connect the switching on/off subassembly, including drive assembly and linkage subassembly, drive assembly includes electromagnetic component and the push-and-pull rod of being connected with electromagnetic component, and the one end of linkage subassembly is connected with the push-and-pull rod, the other end and the switching on/off subassembly are connected, and electromagnetic component drive push-and-pull rod reciprocating motion, push-and-pull rod drive linkage subassembly motion make the switching on/off subassembly close floodgate or divide the floodgate.

In the optional embodiment of the present invention, the electromagnetic assembly includes a movable iron core, a first stationary iron core, a second stationary iron core, and a first coil and a second coil which are arranged at intervals, the movable iron core is disposed in a receiving space formed by the first coil and the second coil, the first stationary iron core and the second stationary iron core are disposed at two sides of the receiving space respectively, the movable iron core is connected to the push-pull rod towards one end of the first stationary iron core, and the push-pull rod passes through one end of the first stationary iron core and is connected to the linkage assembly.

In the optional embodiment of the present invention, the linkage assembly includes a rotary plate, the rotary plate is respectively connected to the push-pull rod and the switching-on/off assembly, and the push-pull rod is rotated by the driving rotary plate to switch on or off the switching-on/off assembly.

In an alternative embodiment of the present invention, the electromagnetic assembly further includes a first return spring connected between the movable core and the first stationary core or a second return spring connected between the movable core and the second stationary core, and when the first coil and the second coil are not energized, the first return spring or the second return spring is in a natural extension state.

In an alternative embodiment of the present invention, the electromagnetic assembly further includes a first return spring connected between the movable iron core and the first stationary iron core and a second return spring connected between the movable iron core and the second stationary iron core, and when the first coil and the second coil are not energized, the first return spring and the second return spring apply the same force to the movable iron core.

In the optional embodiment of the present invention, the linkage assembly includes a rotary plate, a sliding block, a first connecting rod and a second connecting rod, a cavity is disposed on the sliding block, the head of the push-pull rod extends into the cavity and slides in the cavity, one end of the first connecting rod is connected to the sliding block, the other end of the first connecting rod is connected to the rotary plate, one end of the second connecting rod is connected to the rotary plate, and the other end of the second connecting rod is connected to the switching-on/off assembly.

In an alternative embodiment of the present invention, the cavity has a predetermined stroke width along a moving direction of the push-pull rod, the push-pull rod pushes the slider to move in a direction away from the first stationary core after moving to the first end of the cavity, and the push-pull rod pulls the slider to move in a direction close to the first stationary core after moving to the second end of the cavity.

The driving assembly further comprises an installation shell, the movable iron core, the first static iron core, the second static iron core, the first coil and the second coil are all located in the installation shell, an opening is formed in the installation shell, and one end, penetrating through the first static iron core, of the push-pull rod penetrates out of the opening and is connected with the linkage assembly.

The utility model discloses optional embodiment still includes the control module who is connected with the electromagnetism subassembly electricity, and control module controls first coil or the circular telegram of second coil, realizes moving the reciprocating motion of iron core.

The embodiment of the utility model provides a further aspect provides a circuit breaker, including casing and the electromagnetic operating mechanism who sets up at the inside switching on/off subassembly of casing and above-mentioned arbitrary.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides an electromagnetic operation mechanism for connect the switching on/off subassembly, electromagnetic operation mechanism includes drive assembly and linkage subassembly, and drive assembly includes electromagnetic component and the push-and-pull rod of being connected with electromagnetic component, and the one end and the push-and-pull rod of linkage subassembly are connected, the other end is connected with the switching on/off subassembly, and electromagnetic component drive push-and-pull rod reciprocating motion, push-and-pull rod drive linkage subassembly motion make the switching on/off subassembly close floodgate or divide the floodgate. When the electromagnetic assembly drives the push-pull rod to move along a first direction, the push-pull rod pushes the linkage assembly to move, and the linkage assembly enables the switching-on/off assembly to rotate along a third direction, so that automatic switching-on of the switching-on/off assembly is realized; when the electromagnetic assembly drives the push-pull rod to move along the second direction, the push-pull rod pulls the linkage assembly to move, and the linkage assembly drives the opening and closing assembly to rotate along the fourth direction, so that automatic opening and closing of the opening and closing assembly are achieved.

The embodiment of the utility model provides an on the other hand provides a circuit breaker, and it has adopted foretell electromagnetic operation mechanism, not only can realize automatic combined floodgate and separating brake, and integrates the degree height, occupation space is little.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 an electromagnetic operating mechanism according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of an electromagnetic operating mechanism according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of an electromagnetic operating mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Icon: 10-a circuit breaker; 100-an electromagnetic operating mechanism; 110-a drive assembly; 111-an electromagnetic assembly; 1111-movable iron core; 1112-a first stationary core; 1113-second stationary core; 1114 — a first coil; 1115-a second coil; 1116-a first return spring; 1117-second return spring; 112-a push-pull rod; 113-mounting a housing; 120-a linkage assembly; 121-a turntable; 122-a slider; 1221-a cavity; 1222-a first end; 1223-a second end; 123-a first link; 124-a second link; 200-a housing; 300-switching on and switching off the brake component.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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. 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is one of the schematic structural diagrams of an electromagnetic operating mechanism 100 according to an embodiment of the present invention, please refer to fig. 1, the embodiment provides an electromagnetic operating mechanism 100 for connecting a switching assembly 300, the electromagnetic operating mechanism 100 includes a driving assembly 110 and a linkage assembly 120, the driving assembly 110 includes an electromagnetic assembly 111 and a push-pull rod 112 connected to the electromagnetic assembly 111, one end of the linkage assembly 120 is connected to the push-pull rod 112, the other end of the linkage assembly is connected to the switching assembly 300, the electromagnetic assembly 111 drives the push-pull rod 112 to reciprocate, and the push-pull rod 112 drives the linkage assembly 120 to move so as to switch on or off the switching assembly 300. When the electromagnetic assembly 111 drives the push-pull rod 112 to move along a first direction (i.e., a direction a in fig. 1), the push-pull rod 112 pushes the linkage assembly 120 to move, and the linkage assembly 120 rotates the opening and closing assembly 300 along a third direction (i.e., a direction C in fig. 1), so that automatic closing of the opening and closing assembly 300 is realized; when the electromagnetic assembly 111 drives the push-pull rod 112 to move along the second direction (i.e., the direction B in fig. 1), the push-pull rod 112 pulls the linkage assembly 120 to move, and the linkage assembly 120 drives the opening/closing assembly 300 to rotate along the fourth direction (i.e., the direction D in fig. 1), so as to achieve automatic opening/closing of the opening/closing assembly 300.

The movement of the push-pull rod 112 is a linear movement, the first direction (i.e., direction a in fig. 1) and the second direction (i.e., direction B in fig. 1) are opposite, the movement of the opening/closing assembly 300 is a rotation, the third direction is a clockwise direction (i.e., direction C in fig. 1) in the view angle of fig. 1, and the fourth direction is a counterclockwise direction (i.e., direction D in fig. 1) in the view angle of fig. 1.

Fig. 2 is a second structural schematic diagram of the electromagnetic operating mechanism 100 provided in the embodiment of the present invention, please refer to fig. 2, optionally, the electromagnetic assembly 111 includes a movable iron core 1111, a first stationary iron core 1112, a second stationary iron core 1113, and a first coil 1114 and a second coil 1115 arranged at intervals, the movable iron core 1111 is disposed in the accommodating space formed by the first coil 1114 and the second coil 1115 together, the first stationary iron core 1112 and the second stationary iron core 1113 are disposed on two sides of the accommodating space respectively, the movable iron core 1111 is connected to the push-pull rod 112 towards one end of the first stationary iron core 1112, and the push-pull rod 112 is connected to the linkage assembly 120 through one end of the first stationary iron core 1112.

The movable core 1111 is located between the first stationary core 1112 and the second stationary core 1113 and can freely move in the accommodating space formed by the first coil 1114 and the second coil 1115; when the first coil 1114 is powered on and the second coil 1115 is powered off, the first stationary iron core 1112 generates a magnetic attraction effect on the movable iron core 1111, the movable iron core 1111 moves towards the first stationary iron core 1112, and the push-pull rod 112 and the movable iron core 1111 are fixedly connected, so that the push-pull rod 112 moves along with the movable iron core 1111 along a first direction (i.e., the direction a in fig. 2), the push-pull rod 112 pushes the linkage assembly 120 to move, and the linkage assembly 120 enables the switching-on/off assembly 300 to rotate along a third direction (i.e., the direction C in fig. 2), thereby realizing the automatic switching-on of the switching-on/off assembly 300; when the second coil 1115 is powered on and the first coil 1114 is powered off, the second stationary core 1113 generates a magnetic attraction effect on the movable core 1111, the movable core 1111 moves towards the second stationary core 1113, the push-pull rod 112 moves along the second direction (i.e., the direction B in fig. 2) along with the movable core 1111, the push-pull rod 112 pulls the linkage assembly 120 to move, and the linkage assembly 120 enables the opening and closing assembly 300 to rotate along the fourth direction (i.e., the direction D in fig. 2), so that the automatic opening and closing of the opening and closing assembly 300 is realized.

The movable iron core 1111, the first stationary iron core 1112, the second stationary iron core 1113, the first coil 1114 and the second coil 1115 are arranged, so that the push-pull rod 112 can reciprocate, and the linkage assembly 120 applies driving forces in different directions to the closing and opening assembly 300, thereby realizing automatic closing and opening of the closing and opening assembly 300.

Optionally, a control module (not shown in the figure) electrically connected to the electromagnetic assembly 111 is further included, and the control module controls the first coil 1114 or the second coil 1115 to be energized to realize the reciprocating motion of the movable core 1111. The control module is electrically connected with the electromagnetic assembly 111 and is used for controlling the driving assembly 110 to operate, that is, the control module controls one of the first coil 1114 and the second coil 1115 in the electromagnetic assembly 111 to be electrified, so that one of the first stationary core 1112 and the second stationary core 1113 applies an adsorption force to the movable core 1111, and the movable core 1111 drives the push-pull rod 112 to reciprocate; the push-pull rod 112 is connected to the switching-on/off assembly 300 through the linkage assembly 120, so as to drive the switching-on/off assembly 300 to switch on or switch off.

Optionally, the driving assembly 110 further includes a mounting housing 113, and a space for mounting the movable core 1111, the first stationary core 1112, the second stationary core 1113, the first coil 1114 and the second coil 1115 is provided inside the mounting housing 113, so as to provide a bearing function for the first stationary core 1112, the second stationary core 1113, the first coil 1114 and the second coil 1115; the movable iron core 1111, the first stationary iron core 1112, the second stationary iron core 1113, the first coil 1114 and the second coil 1115 are all located in the installation shell 113, so that the occupied space of the electromagnetic assembly 111 is small and the integration degree is high; an opening is formed in the mounting housing 113, one end of the push-pull rod 112 penetrating through the first stationary core 1112 penetrates through the opening and is connected with the linkage assembly 120, and the push-pull rod 112 can move freely through the opening, so that the arrangement of the mounting housing 113 does not affect the switching on or switching off of the switching on/off assembly 300.

Optionally, the linkage assembly 120 includes a turntable 121, the turntable 121 is driven by a force to rotate freely, the turntable 121 is connected to the push-pull rod 112 and the switching-on/off assembly 300, and the push-pull rod 112 drives the turntable 121 to rotate, so that the switching-on/off assembly 300 is switched on or off.

When the first coil 1114 is powered on and the second coil 1115 is powered off, the first stationary iron core 1112 generates a magnetic attraction effect on the movable iron core 1111, the movable iron core 1111 moves towards the first stationary iron core 1112, and the push-pull rod 112 and the movable iron core 1111 are fixedly connected, so that the push-pull rod 112 moves along with the movable iron core 1111 in a first direction (i.e., a direction a in fig. 2), the push-pull rod 112 pushes the rotary disc 121 to rotate in a fifth direction (i.e., a direction E in fig. 2), and the rotary disc 121 enables the opening and closing assembly 300 to rotate in a third direction (i.e., a direction C in fig. 2), thereby realizing automatic opening and closing of the opening and closing assembly 300; when the second coil 1115 is energized and the first coil 1114 is de-energized, the second stationary core 1113 generates a magnetic attraction effect on the movable core 1111, the movable core 1111 moves towards the second stationary core 1113, the push-pull rod 112 moves along with the movable core 1111 in the second direction (i.e., the direction B in fig. 2), the push-pull rod 112 pulls the rotary disc 121 to rotate in the sixth direction (i.e., the direction F in fig. 2), and the rotary disc 121 rotates the opening and closing assembly 300 in the fourth direction (i.e., the direction D in fig. 1), so as to achieve the automatic opening and closing of the opening and closing assembly 300.

Wherein, the rotation of the turntable 121 in the fifth direction refers to that the turntable 121 rotates in the counterclockwise direction (i.e. the direction E in fig. 2) in the viewing angle of fig. 2; rotation of the dial 121 in the sixth direction refers to rotation of the dial 121 in a clockwise direction (i.e., direction F in fig. 2) from the perspective of fig. 2.

It should be understood that the turntable 121 may be directly connected to the push-pull rod 112 and the switching on/off assembly 300, so that the push-pull rod 112 drives the switching on/off assembly 300 to switch on or off; in other embodiments, the rotating disc 121 may also be connected to the push-pull rod 112 and the opening/closing brake assembly 300 through a connecting assembly, for example, two connecting rods are respectively disposed on the rotating disc 121, and the ends of the two connecting rods are respectively connected to the push-pull rod 112 and the opening/closing brake assembly 300.

Fig. 3 is a third schematic structural diagram of the electromagnetic operating mechanism 100 according to an embodiment of the present invention, referring to fig. 3, optionally, the electromagnetic assembly 111 further includes a first return spring 1116 connected between the movable core 1111 and the first stationary core 1112 or a second return spring 1117 connected between the movable core 1111 and the second stationary core 1113, and when the first coil 1114 and the second coil 1115 are not energized, the first return spring 1116 or the second return spring 1117 is in a natural extension state.

The naturally elongated state refers to a state in which the first return spring 1116 or the second return spring 1117 is neither extended nor compressed. When neither the first coil 1114 nor the second coil 1115 is energized, the push-pull rod 112 may be returned to the initial position by the first return spring 1116 or the second return spring 1117. The initial position refers to a position of the movable core 1111 before being attracted by the first stationary core 1112 or the second stationary core 1113.

It should be understood that the present embodiment encompasses both approaches, i.e., providing only the first return spring 1116 and providing only the second return spring 1117.

In the case where only the first return spring 1116 is provided, when the push-pull rod 112 moves in the first direction (i.e., the direction a in fig. 3), the first return spring 1116 is compressed, and after the first coil 1114 is powered off and the first stationary iron core 1112 no longer exerts an attraction effect on the movable iron core 1111, the movable iron core 1111 and the push-pull rod 112 will return to the initial position under the action of the first return spring 1116; when the push-pull rod 112 moves in the second direction (i.e., the direction B in fig. 3), the first return spring 1116 is extended, and after the second coil 1115 is powered off and the second stationary core 1113 no longer attracts the movable core 1111, the movable core 1111 and the push-pull rod 112 return to the initial position under the action of the first return spring 1116.

In the scheme of only providing the second return spring 1117, when the push-pull rod 112 moves in the first direction (i.e., the direction a in fig. 3), the second return spring 1117 is stretched, and after the first coil 1114 is powered off and the first stationary core 1112 no longer exerts an adsorption effect on the movable core 1111, the movable core 1111 and the push-pull rod 112 will return to the initial position under the action of the second return spring 1117; when the push-pull rod 112 moves in the second direction (i.e., the direction B in fig. 3), the second return spring 1117 is compressed, and after the second coil 1115 is powered off and the second stationary core 1113 no longer attracts the movable core 1111, the movable core 1111 and the push-pull rod 112 return to the initial position by the second return spring 1117.

Alternatively, another possible embodiment of the electromagnetic assembly 111 is presented herein, i.e., the electromagnetic assembly 111 further comprises a first return spring 1116 connected between the movable core 1111 and the first stationary core 1112 and a second return spring 1117 connected between the movable core 1111 and the second stationary core 1113, wherein the first return spring 1116 and the second return spring 1117 apply the same amount of force to the movable core 1111 when the first coil 1114 and the second coil 1115 are not energized; the first return spring 1116 and the second return spring 1117 are arranged at the same time, so that the stability of the movable iron core 1111 can be improved, and the movable iron core 1111 is prevented from swinging back after being stressed or inclined.

It should be appreciated that the electromagnetic assembly 111 of the present embodiment includes both the first return spring 1116 and the second return spring 1117, and when the first coil 1114 and the second coil 1115 are not energized, the first return spring 1116 and the second return spring 1117 can have three states, respectively: the first and second return springs 1116 and 1117 are both in a naturally extended state; the first return spring 1116 and the second return spring 1117 are both stretched, and the acting forces exerted on the movable iron core 1111 by the first return spring 1116 and the second return spring 1117 are equal in magnitude and opposite in direction; the first return spring 1116 and the second return spring 1117 are both compressed, and the acting forces exerted on the movable iron core 1111 by the first return spring 1116 and the second return spring 1117 are equal in magnitude and opposite in direction.

Optionally, another possible embodiment of the linkage assembly 120 is provided herein, that is, the linkage assembly 120 includes a rotary disc 121, a sliding block 122, a first connecting rod 123 and a second connecting rod 124, one end of the first connecting rod 123 is connected to the sliding block 122, the other end is connected to the rotary disc 121 in a rotating manner, one end of the second connecting rod 124 is connected to the rotary disc 121 in a rotating manner, and the other end is connected to the opening/closing assembly 300, and by the arrangement of the first connecting rod 123 and the second connecting rod 124, the connection among the push-pull rod 112, the rotary disc 121 and the opening/closing assembly 300 can be more flexible, which is more convenient for the push-pull rod 112 to drive the connecting assembly to move, thereby controlling the opening; the cavity 1221 is formed in the slider 122, and the head of the push-pull rod 112 extends into the cavity 1221 and slides in the cavity 1221, so that when the movable iron core 1111 and the push-pull rod 112 return to the initial position under the action of the first return spring 1116 and/or the second return spring 1117, the closing or opening state before the opening/closing assembly 300 remains unchanged, and the first coil 1114 or the second coil 1115 does not need to be energized all the time to keep the opening/closing assembly 300 in the closing or opening state, thereby saving electric energy.

It should be understood that if the connection point of the first link 123 and the rotation disk 121 is defined as a first connection point and the connection point of the second link 124 and the rotation disk 121 is defined as a second connection point, the first connection point and the second connection point do not coincide with the center of the rotation disk 121, and the distance from the first connection point to the center of the rotation disk 121 and the distance from the second connection point to the center of the rotation disk 121 may be equal or different.

When the switching-on/off assembly 300 is already in the switching-on state, the first coil 1114 is powered off, the first stationary iron core 1112 does not generate a magnetic attraction effect on the moving iron core 1111 any more, the push-pull rod 112 returns to the initial position under the effect of the first return spring 1116 and/or the second return spring 1117, and since the cavity 1221 is formed in the slider 122, the head of the push-pull rod 112 can slide a certain distance in the cavity 1221, so that the slider 122 cannot be driven to move in the direction B in fig. 3 in the process of resetting (moving in the direction B in fig. 3) of the push-pull rod 112, that is, the linkage assembly 120 cannot be driven to move, so that the switching-on/off assembly 300 cannot be affected, and the switching-on/off assembly 300 will continue to be in the switching-on state.

Similarly, when the switching-on/off assembly 300 is already in the switching-off state, the second coil 1115 is not powered on, the second stationary core 1113 does not generate a magnetic attraction effect on the moving core 1111 any more, the push-pull rod 112 returns to the initial position under the effect of the first return spring 1116 and/or the second return spring 1117, and since the cavity 1221 is formed in the slider 122, the head of the push-pull rod 112 can slide a certain distance in the cavity 1221, therefore, in the process of resetting the push-pull rod 112 (moving in the direction a in fig. 3), the slider 122 cannot be driven to move in the direction a in fig. 3, that is, the linkage assembly 120 cannot be driven to move, so that the switching-on/off assembly 300 cannot be affected, and the switching-on/off assembly 300 will continue to be in the switching-off state.

Optionally, the cavity 1221 has a predetermined stroke width along the moving direction of the push-pull rod 112, and after the push-pull rod 112 moves to the first end 1222 of the cavity 1221, the slider 122 is pushed to move away from the first stationary core 1112, and after the push-pull rod 112 moves to the second end 1223 of the cavity 1221, the slider 122 is pulled to move close to the first stationary core 1112.

The first end 1222 and the second end 1223 are two opposite acting surfaces of the cavity 1221, and when the head of the push-pull rod 112 moves between the first end 1222 and the second end 1223, the slider 122 is not driven to move together, so that the switching-on/off assembly 300 is not affected, and the switching-on/off assembly 300 can always maintain the original switching-on or switching-off state; after the head of the push-pull rod 112 contacts the first end 1222 and continues to move along the direction a in fig. 3, the push-pull rod 112 changes the opening/closing assembly 300 to the closing state through the linkage assembly 120; after the head of the push-pull rod 112 contacts the second end 1223 and continues to move in the direction B in fig. 3, the push-pull rod 112 will make the opening/closing assembly 300 change to the opening/closing state through the linkage assembly 120.

Fig. 4 is a schematic structural diagram of the circuit breaker 10 according to an embodiment of the present invention, please refer to fig. 4, the embodiment further provides a circuit breaker 10, which includes a housing 200, an opening/closing assembly 300 disposed inside the housing 200, and any one of the electromagnetic operating mechanisms 100; a space for installing the electromagnetic operating mechanism 100 and the switching-on/off brake assembly 300 is arranged in the shell 200, and can provide a bearing function for the electromagnetic operating mechanism 100 and the switching-on/off brake assembly 300; the electromagnetic operating mechanism 100 and the switching-on/off assembly 300 are disposed in the housing 200, so that the circuit breaker 10 can realize automatic switching-on and switching-off, and has high integration degree and small occupied space.

In the foregoing explanation of the electromagnetic operating mechanism 100, the operation manner, the operation principle, and the like when the electromagnetic operating mechanism 100 is provided on the circuit breaker 10 have been described in detail, and are not described again.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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.

Claims (10)

1. The electromagnetic operating mechanism is used for being connected with a switching-on/off component and is characterized by comprising a driving component and a linkage component, wherein the driving component comprises an electromagnetic component and a push-pull rod connected with the electromagnetic component, one end of the linkage component is connected with the push-pull rod, the other end of the linkage component is connected with the switching-on/off component, the electromagnetic component drives the push-pull rod to reciprocate, and the push-pull rod drives the linkage component to move so as to enable the switching-on/off component to be switched on or switched off.

2. The electromagnetic operating mechanism according to claim 1, wherein the electromagnetic assembly includes a movable iron core, a first stationary iron core, a second stationary iron core, and a first coil and a second coil that are arranged at an interval, the movable iron core is arranged in an accommodating space formed by the first coil and the second coil, the first stationary iron core and the second stationary iron core are respectively arranged at two sides of the accommodating space, one end of the movable iron core facing the first stationary iron core is connected to the push-pull rod, and the push-pull rod passes through one end of the first stationary iron core and is connected to the linkage assembly.

3. The electromagnetic operating mechanism according to claim 2, wherein the linkage assembly comprises a rotary table, the rotary table is connected with the push-pull rod and the switching-on/off assembly respectively, and the push-pull rod drives the rotary table to rotate so as to switch on or switch off the switching-on/off assembly.

4. The electromagnetic operating mechanism of claim 2, wherein the electromagnetic assembly further comprises a first return spring connected between the movable core and the first stationary core or a second return spring connected between the movable core and the second stationary core, the first return spring or the second return spring being in a natural elongation state when the first coil and the second coil are not energized.

5. The electromagnetic operating mechanism according to claim 2, wherein the electromagnetic assembly further comprises a first return spring connected between the movable core and the first stationary core and a second return spring connected between the movable core and the second stationary core, the first return spring and the second return spring applying the same amount of force to the movable core when the first coil and the second coil are not energized.

6. The electromagnetic operating mechanism according to claim 4 or 5, wherein the linkage assembly comprises a rotary disc, a sliding block, a first connecting rod and a second connecting rod, a cavity is formed in the sliding block, the head of the push-pull rod extends into the cavity and slides in the cavity, one end of the first connecting rod is connected with the sliding block, the other end of the first connecting rod is rotatably connected with the rotary disc, one end of the second connecting rod is rotatably connected with the rotary disc, and the other end of the second connecting rod is connected with the opening and closing brake assembly.

7. The electromagnetic operating mechanism according to claim 6, wherein the cavity has a predetermined stroke width along a moving direction of the push-pull rod, the push-pull rod pushes the slider to move away from the first stationary core after moving to a first end of the cavity, and the push-pull rod pulls the slider to move close to the first stationary core after moving to a second end of the cavity.

8. The electromagnetic operating mechanism according to claim 2, wherein the driving assembly further includes a mounting housing, the movable core, the first stationary core, the second stationary core, the first coil and the second coil are all located in the mounting housing, an opening is provided in the mounting housing, and one end of the push-pull rod passing through the first stationary core is extended out of the opening and connected to the linkage assembly.

9. The electromagnetic operating mechanism according to claim 2, further comprising a control module electrically connected to the electromagnetic assembly, wherein the control module controls the first coil or the second coil to be energized to realize the reciprocating motion of the plunger.

10. A circuit breaker comprising a housing and an opening and closing assembly disposed inside the housing and an electromagnetic operating mechanism according to any one of claims 1 to 9.

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