An electromagnetic operating mechanism and a circuit breaker

Abstract

The present invention discloses an electromagnetic operating mechanism and a circuit breaker, relating to the technical field of circuit breakers. The electromagnetic operating mechanism is used to connect the closing and opening components, and includes a driving component and a linkage component. The driving component includes an electromagnetic component and a push-pull rod connected to the electromagnetic component. One end of the linkage component is connected to the push-pull rod, and the other end is connected to the closing and opening components. The electromagnetic component drives the push-pull rod to reciprocate, so that the push-pull rod can move along opposite first and second directions respectively. The push-pull rod enables the closing and opening components to move along opposite third and fourth directions respectively through the linkage component, thereby realizing the automatic closing and opening of the closing and opening components. The circuit breaker including the above electromagnetic operating mechanism can not only automatically close and open, but also has a high degree of integration and occupies a small space.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and more particularly, to an electromagnetic operating mechanism and a circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can close, carry, and interrupt the current under normal circuit conditions and can also close, carry, and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application scope. A low-voltage circuit breaker is a switching electrical appliance that can not only connect and disconnect normal load current and overload current, but also connect and disconnect short-circuit current. In addition to its control function in the circuit, a low-voltage circuit breaker also has certain protection functions, such as overload, short-circuit, undervoltage, and leakage protection.

[0003] Circuit breakers are classified by installation method: there are plug-in circuit breakers, fixed circuit breakers, and drawer-type circuit breakers. The use of plug-in circuit breakers can effectively improve the safety of the electrical equipment industry. With the wide application of plug-in circuit breakers in industries such as communications, the characteristic of timely feedback in the communications industry requires the product to have remote control capabilities.

[0004] The operating mechanisms of existing remotely operable miniature circuit breakers are all splicing type, which occupy a large space and are not conducive to wire layout. Existing plug-in miniature circuit breakers do not have an automatic operating mechanism and cannot realize the function of automatic closing and opening. Summary of the Invention

[0005] The purpose of the present invention is to provide an electromagnetic operating mechanism and a circuit breaker to solve the technical problem that the miniature circuit breaker in the prior art cannot automatically close and open.

[0006] The embodiments of the present invention are implemented as follows:

[0007] On one hand, an embodiment of the present invention provides an electromagnetic operating mechanism for connecting a closing and opening component, including a driving component and a linkage component. The driving component includes an electromagnetic component and a push-pull rod connected to the electromagnetic component. One end of the linkage component is connected to the push-pull rod, and the other end is connected to the closing and opening component. The electromagnetic component drives the push-pull rod to reciprocate, and the push-pull rod drives the linkage component to move to close or open the closing and opening component.

[0008] In an optional embodiment of the present invention, the electromagnetic component includes a moving iron core, a first static iron core, a second static iron core, and a first coil and a second coil arranged at intervals. The moving iron core is arranged in the accommodation space formed by the first coil and the second coil. The first static iron core and the second static iron core are respectively arranged on both sides of the accommodation space. One end of the moving iron core facing the first static iron core is connected to the push-pull rod, and the push-pull rod passes through one end of the first static iron core and is connected to the linkage component.

[0009] In an alternative embodiment of the present invention, the linkage assembly includes a turntable, which is respectively connected to the push-pull rod and the closing and opening assembly. The push-pull rod drives the turntable to rotate, so as to close or open the closing and opening assembly.

[0010] In an alternative embodiment of the present invention, the electromagnetic assembly further includes a first return spring connected between the moving iron core and the first static iron core or a second return spring connected between the moving iron core and the second static iron core. When the first coil and the second coil are not energized, the first return spring or the second return spring is in a natural elongation state.

[0011] In an alternative embodiment of the present invention, the electromagnetic assembly further includes a first return spring connected between the moving iron core and the first static iron core and a second return spring connected between the moving iron core and the second static iron core. When the first coil and the second coil are not energized, the first return spring and the second return spring apply the same magnitude of force to the moving iron core.

[0012] In an alternative embodiment of the present invention, the linkage assembly includes a turntable, a slider, a first connecting rod, and a second connecting rod. A cavity is provided on the slider. The head of the push-pull rod extends into the cavity and slides therein. One end of the first connecting rod is connected to the slider, and the other end is rotatably connected to the turntable. One end of the second connecting rod is rotatably connected to the turntable, and the other end is connected to the closing and opening assembly.

[0013] In an alternative embodiment of the present invention, the cavity has a preset stroke width along the movement direction of the push-pull rod. After the push-pull rod moves to the first end of the cavity, it pushes the slider to move away from the first static iron core. After the push-pull rod moves to the second end of the cavity, it pulls the slider to move closer to the first static iron core.

[0014] The driving assembly further includes a mounting housing. The moving iron core, the first static iron core, the second static iron core, the first coil, and the second coil are all located inside the mounting housing. An opening is provided on the mounting housing. One end of the push-pull rod passing through the first static iron core passes out through the opening and is connected to the linkage assembly.

[0015] In an alternative embodiment of the present invention, it further includes a control module electrically connected to the electromagnetic assembly. The control module controls the first coil or the second coil to be energized to realize the reciprocating movement of the moving iron core.

[0016] On the other hand, an embodiment of the present invention provides a circuit breaker, which includes a housing and a closing and opening assembly and the electromagnetic operating mechanism according to any one of the above inside the housing.

[0017] The beneficial effects of the embodiments of the present invention include:

[0018] On the one hand, an embodiment of the present invention provides an electromagnetic operating mechanism for connecting a closing and opening component. The electromagnetic operating mechanism includes a driving component and a linkage component. The driving component includes an electromagnetic component and a push-pull rod connected to the electromagnetic component. One end of the linkage component is connected to the push-pull rod, and the other end is connected to the closing and opening component. The electromagnetic component drives the push-pull rod to reciprocate, and the push-pull rod drives the linkage component to move, causing the closing and opening component to close or open. When the electromagnetic component drives the push-pull rod to move in the first direction, the push-pull rod pushes the linkage component to move, and the linkage component causes the closing and opening component to rotate in the third direction, realizing the automatic closing of the closing and opening component; when the electromagnetic component drives the push-pull rod to move in the second direction, the push-pull rod pulls the linkage component to move, and the linkage component drives the closing and opening component to rotate in the fourth direction, realizing the automatic opening of the closing and opening component.

[0019] On the other hand, an embodiment of the present invention provides a circuit breaker that uses the above-mentioned electromagnetic operating mechanism, which can not only realize automatic closing and opening, but also has a high degree of integration and occupies a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is one of the structural schematic diagrams of the electromagnetic operating mechanism provided by the embodiment of the present invention;

[0022] Figure 2 It is the second structural schematic diagram of the electromagnetic operating mechanism provided by the embodiment of the present invention;

[0023] Figure 3 It is the third structural schematic diagram of the electromagnetic operating mechanism provided by the embodiment of the present invention;

[0024] Figure 4 It is the structural schematic diagram of the circuit breaker provided by the embodiment of the present invention.

[0025] Icons: 10 - circuit breaker; 100 - electromagnetic operating mechanism; 110 - drive assembly; 111 - electromagnetic component; 1111 - moving iron core; 1112 - first static iron core; 1113 - second static iron core; 1114 - first coil; 1115 - second coil; 1116 - first return spring; 1117 - second return spring; 112 - push - pull rod; 113 - mounting housing; 120 - linkage assembly; 121 - turntable; 122 - slider; 1221 - cavity; 1222 - first end; 1223 - second end; 123 - first connecting rod; 124 - second connecting rod; 200 - housing; 300 - closing and opening assembly. Detailed implementation manners

[0026] To make the objectives, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. The terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Figure 1 One of the structural schematic diagrams of the electromagnetic operating mechanism 100 provided for the embodiments of the present invention, please refer to Figure 1, this embodiment provides an electromagnetic operating mechanism 100 for connecting a closing and opening component 300. The electromagnetic operating mechanism 100 includes a driving component 110 and a linkage component 120. The driving component 110 includes an electromagnetic component 111 and a push-pull rod 112 connected to the electromagnetic component 111. One end of the linkage component 120 is connected to the push-pull rod 112, and the other end is connected to the closing and opening component 300. The electromagnetic component 111 drives the push-pull rod 112 to reciprocate, and the push-pull rod 112 drives the linkage component 120 to move to close or open the closing and opening component 300. When the electromagnetic component 111 drives the push-pull rod 112 to move in the first direction (i.e., the A direction in Figure 1 ), the push-pull rod 112 pushes the linkage component 120 to move, and the linkage component 120 causes the closing and opening component 300 to rotate in the third direction (i.e., the C direction in Figure 1 ), realizing the automatic closing of the closing and opening component 300; when the electromagnetic component 111 drives the push-pull rod 112 to move in the second direction (i.e., the B direction in Figure 1 ), the push-pull rod 112 pulls the linkage component 120 to move, and the linkage component 120 drives the closing and opening component 300 to rotate in the fourth direction (i.e., the D direction in Figure 1 ), realizing the automatic opening of the closing and opening component 300.

[0030] Among them, the movement of the push-pull rod 112 is a linear movement. The first direction (i.e., the A direction in Figure 1 ) and the second direction (i.e., the B direction in Figure 1 ) are opposite. The movement of the closing and opening component 300 is a rotation. The third direction is the clockwise direction at the Figure 1 perspective (i.e., the C direction in Figure 1 ), and the fourth direction is the counterclockwise direction at the Figure 1 perspective (i.e., the D direction in Figure 1 ).

[0031] Figure 2 This is the second structural schematic diagram of the electromagnetic operating mechanism 100 provided by the embodiment of the present invention. Please refer to Figure 2 . Optionally, the electromagnetic component 111 includes a moving iron core 1111, a first static iron core 1112, a second static iron core 1113, and a first coil 1114 and a second coil 1115 arranged at intervals. The moving iron core 1111 is arranged in the accommodation space jointly formed by the first coil 1114 and the second coil 1115. The first static iron core 1112 and the second static iron core 1113 are respectively arranged on both sides of the accommodation space. One end of the moving iron core 1111 facing the first static iron core 1112 is connected to the push-pull rod 112, and one end of the push-pull rod 112 passing through the first static iron core 1112 is connected to the linkage component 120.

[0032] The moving iron core 1111 is located between the first static iron core 1112 and the second static iron core 1113 and can move freely within the accommodation space jointly formed by the first coil 1114 and the second coil 1115; when the first coil 1114 is energized and the second coil 1115 is de-energized, the first static iron core 1112 generates a magnetic attraction on the moving iron core 1111, and the moving iron core 1111 moves towards the first static iron core 1112. The push rod 112 is fixedly connected to the moving iron core 1111, so the push rod 112 moves along the first direction together with the moving iron core 1111 (that is, Figure 2 the A direction in Figure 2 ). The push rod 112 pushes the linkage assembly 120 to move, and the linkage assembly 120 causes the switching assembly 300 to rotate along the third direction (that is, Figure 2 the C direction in Figure 2 ), realizing the automatic closing of the switching assembly 300; when the second coil 1115 is energized and the first coil 1114 is de-energized, the second static iron core 1113 generates a magnetic attraction on the moving iron core 1111, and the moving iron core 1111 moves towards the second static iron core 1113. The push rod 112 moves along the second direction together with the moving iron core 1111 (that is, Figure 2 the B direction in Figure 2 ). The push rod 112 pulls the linkage assembly 120 to move, and the linkage assembly 120 causes the switching assembly 300 to rotate along the fourth direction (that is, Figure 2 the D direction in

[0033] ), realizing the automatic opening of the switching assembly 300. The settings of the moving iron core 1111, the first static iron core 1112, the second static iron core 1113, the first coil 1114, and the second coil 1115 enable the push rod 112 to move reciprocally, and different-direction driving forces are applied to the switching assembly 300 through the linkage assembly 120, thereby realizing the automatic closing and opening of the switching assembly 300.

[0034] Optionally, it further includes a control module (not shown in the figure) electrically connected to the electromagnetic assembly 111. The control module controls the energization of the first coil 1114 or the second coil 1115 to realize the reciprocating movement of the moving iron core 1111. The control module is electrically connected to the electromagnetic assembly 111 and is used to control the operation of the driving assembly 110, that is, the control module controls one of the first coil 1114 and the second coil 1115 in the electromagnetic assembly 111 to be energized, so that one of the first static iron core 1112 and the second static iron core 1113 applies an adsorption force to the moving iron core 1111, causing the moving iron core 1111 to drive the push rod 112 to move reciprocally; the push rod 112 is connected to the switching assembly 300 through the linkage assembly 120, and further drives the switching assembly 300 to close or open.

[0035] Optionally, the driving component 110 further includes an installation housing 113. Inside the installation housing 113, there is a space for installing the moving iron core 1111, the first static iron core 1112, the second static iron core 1113, the first coil 1114, and the second coil 1115, which can provide a bearing function for the first static iron core 1112, the second static iron core 1113, the first coil 1114, and the second coil 1115. The moving iron core 1111, the first static iron core 1112, the second static iron core 1113, the first coil 1114, and the second coil 1115 are all located inside the installation housing 113, making the occupied space of the electromagnetic component 111 smaller and the integration degree higher. An opening is provided on the installation housing 113, and one end of the push rod 112 passes through the opening and is connected to the linkage component 120. The push rod 112 can move freely through the opening, so that the setting of the installation housing 113 will not affect the closing or opening of the closing and opening component 300.

[0036] Optionally, the linkage component 120 includes a turntable 121. The turntable 121 can rotate freely under the drive of force. The turntable 121 is respectively connected to the push rod 112 and the closing and opening component 300. The push rod 112 drives the turntable 121 to rotate, so that the closing and opening component 300 is closed or opened.

[0037] When the first coil 1114 is energized and the second coil 1115 is de-energized, the first static iron core 1112 generates a magnetic attraction on the moving iron core 1111, and the moving iron core 1111 moves towards the first static iron core 1112. The push rod 112 is fixedly connected to the moving iron core 1111. Therefore, the push rod 112 moves along the first direction (i.e., Figure 2 the A direction in Figure 2 ) together with the moving iron core 1111. The push rod 112 pushes the turntable 121 to rotate along the fifth direction (i.e., Figure 2 the E direction in Figure 2 ), and the turntable 121 makes the closing and opening component 300 rotate along the third direction (i.e., Figure 2 the C direction in Figure 1 ), realizing the automatic closing of the closing and opening component 300. When the second coil 1115 is energized and the first coil 1114 is de-energized, the second static iron core 1113 generates a magnetic attraction on the moving iron core 1111, and the moving iron core 1111 moves towards the second static iron core 1113. The push rod 112 moves along the second direction (i.e.,

[0038] the B direction in Figure 2When viewed from the perspective of, the turntable 121 rotates counterclockwise (i.e., Figure 2 in the E direction in Figure 2 ); the rotation of the turntable 121 in the sixth direction means that when viewed from the perspective of Figure 2 , the turntable 121 rotates clockwise (i.e.,

[0039] in the F direction in

[0040] Figure 3 FIG. 3 is a third structural schematic diagram of the electromagnetic operating mechanism 100 provided by the embodiment of the present invention. Please refer to Figure 3 , optionally, the electromagnetic assembly 111 further includes a first return spring 1116 connected between the moving iron core 1111 and the first static iron core 1112 or a second return spring 1117 connected between the moving iron core 1111 and the second static iron core 1113. 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 elongation state.

[0041] The natural elongation state means that the first return spring 1116 or the second return spring 1117 is neither stretched nor compressed. When both the first coil 1114 and the second coil 1115 are not energized, the push rod 112 can be reset to the initial position under the action of the first return spring 1116 or the second return spring 1117. The initial position refers to the position of the moving iron core 1111 before being adsorbed by the first static iron core 1112 or the second static iron core 1113.

[0042] It should be understood that this embodiment includes two schemes, that is, only the first return spring 1116 is provided and only the second return spring 1117 is provided.

[0043] In the scheme of only providing the first return spring 1116, when the push rod 112 moves in the first direction (i.e., Figure 3 in the A direction in Figure 3When the movable iron core 1111 and the push-pull rod 112 move in the direction B in the figure, the first return spring 1116 is stretched, and after the second coil 1115 stops being energized and the second static iron core 1113 no longer has an adsorption effect on the movable iron core 1111, the movable iron core 1111 and the push-pull rod 112 return to their original positions under the action of the first return spring 1116.

[0044] In the solution where only the second return spring 1117 is provided, when the push-pull rod 112 moves along the first direction (i.e. Figure 3 When the push-pull rod 112 moves in the second direction (i.e., in the A direction), the second return spring 1117 is stretched, and after the first coil 1114 stops being energized and the first static iron core 1112 no longer has an adsorption effect on the moving iron core 1111, the moving iron core 1111 and the push-pull rod 112 return to their initial positions under the action of the second return spring 1117; when the push-pull rod 112 moves in the second direction (i.e., in the A direction), the second return spring 1117 is stretched, and after the first coil 1114 stops being energized and the first static iron core 1112 no longer has an adsorption effect on the moving iron core 1111, the moving iron core 1111 and the push-pull rod 112 return to their initial positions under the action of the second return spring 1117. Figure 3 When the movable iron core 1111 and the push-pull rod 112 move in the direction B in the figure, the second return spring 1117 is compressed. When the second coil 1115 stops being energized and the second static iron core 1113 no longer has an adsorption effect on the movable iron core 1111, the movable iron core 1111 and the push-pull rod 112 return to their original positions under the action of the second return spring 1117.

[0045] Optionally, another feasible implementation scheme of the electromagnetic assembly 111 is provided herein, that is, the electromagnetic assembly 111 also includes a first return spring 1116 connected between the moving iron core 1111 and the first stationary iron core 1112 and a second return spring 1117 connected between the moving iron core 1111 and the second stationary iron core 1113. When the first coil 1114 and the second coil 1115 are not energized, the first return spring 1116 and the second return spring 1117 apply the same force to the moving iron core 1111. Simultaneously providing the first return spring 1116 and the second return spring 1117 can improve the stability of the moving iron core 1111 and prevent the moving iron core 1111 from shaking back and forth after being subjected to force or tilting.

[0046] It should be understood that the electromagnetic assembly 111 in this embodiment also includes a first return spring 1116 and a second return spring 1117. 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, namely: the first return spring 1116 and the second return spring 1117 are both in a naturally extended state; the first return spring 1116 and the second return spring 1117 are both stretched and the forces applied by the first return spring 1116 and the second return spring 1117 to the moving iron core 1111 are equal in magnitude and opposite in direction; the first return spring 1116 and the second return spring 1117 are both compressed and the forces applied by the first return spring 1116 and the second return spring 1117 to the moving iron core 1111 are equal in magnitude and opposite in direction.

[0047] Optionally, another implementable solution of the linkage component 120 is given here, that is, the linkage component 120 includes a turntable 121, a slider 122, a first connecting rod 123 and a second connecting rod 124. One end of the first connecting rod 123 is connected to the slider 122, and the other end is rotatably connected to the turntable 121. One end of the second connecting rod 124 is rotatably connected to the turntable 121, and the other end is connected to the switching-on and switching-off component 300. Through the arrangement of the first connecting rod 123 and the second connecting rod 124, the connection between the push-pull rod 112, the turntable 121 and the switching-on and switching-off component 300 can be made more flexible, which is more convenient for the push-pull rod 112 to drive the connecting component to move, and then control the switching-on and switching-off component 300; a cavity 1221 is provided on the slider 122, and the head of the push-pull rod 112 extends into the cavity 1221 and slides therein, so that when the moving 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 switching-on or switching-off state before the switching-on and switching-off component 300 remains unchanged, and there is no need to continuously energize the first coil 1114 or the second coil 1115 to keep the switching-on and switching-off component 300 in the switching-on or switching-off state, which saves more electric energy.

[0048] It should be understood that if the connection point between the first connecting rod 123 and the turntable 121 is defined as the first connection point, and the connection point between the second connecting rod 124 and the turntable 121 is defined as the second connection point, then the first connection point and the second connection point do not coincide, the first connection point and the second connection point do not coincide with the center of the turntable 121, and the distance from the first connection point to the center of the turntable 121 and the distance from the second connection point to the center of the turntable 121 may be equal or unequal.

[0049] When the switching-on and switching-off component 300 is already in the switched-on state, the power supply to the first coil 1114 is stopped, and the first static iron core 1112 no longer exerts a magnetic attraction on the moving iron core 1111. The push-pull rod 112 returns to the initial position under the action of the first return spring 1116 and / or the second return spring 1117. Since the cavity 1221 is provided on the slider 122, the head of the push-pull rod 112 can slide a certain distance in the cavity 1221. Therefore, during the reset of the push-pull rod 112 (moving along Figure 3 the B direction in Figure 3 ), it will not drive the slider 122 to move along the B direction in , that is, it will not drive the linkage component 120 to move, so it will not affect the switching-on and switching-off component 300, and the switching-on and switching-off component 300 will continue to be in the switched-on state.

[0050] Similarly, when the switching assembly 300 is already in the open state, the power supply to the second coil 1115 is stopped, the second static iron core 1113 no longer generates a magnetic attraction on the moving iron core 1111, and the push rod 112 returns to its original position under the action of the first return spring 1116 and / or the second return spring 1117. Since the slider 122 is provided with a cavity 1221, the head of the push rod 112 can slide a certain distance within the cavity 1221. Therefore, during the reset of the push rod 112 (moving along the Figure 3 A direction in Figure 3 ), it will not drive the slider 122 to move along the

[0051] A direction in

[0052] , that is, it will not drive the linkage assembly 120 to move, so it will not affect the switching assembly 300, and the switching assembly 300 will continue to be in the open state. Figure 3 When the head of the push rod 112 contacts the first end 1222 of the cavity 1221 and continues to move along the Figure 3 A direction in

[0053] Figure 4 The structure diagram of the circuit breaker 10 provided by the embodiment of the present invention is shown. Please refer to Figure 4, this embodiment further provides a circuit breaker 10, which includes a housing 200, a closing and opening assembly 300 disposed inside the housing 200, and the electromagnetic operating mechanism 100 of any one of the above; a space for installing the electromagnetic operating mechanism 100 and the closing and opening assembly 300 is provided inside the housing 200, which can provide a bearing function for the electromagnetic operating mechanism 100 and the closing and opening assembly 300; the electromagnetic operating mechanism 100 and the closing and opening assembly 300 are disposed inside the housing 200, so that the circuit breaker 10 can not only realize automatic closing and opening, but also has a high degree of integration and small occupied space.

[0054] In the foregoing explanation of the electromagnetic operating mechanism 100, the working mode, working principle, etc. of the electromagnetic operating mechanism 100 when it is disposed on the circuit breaker 10 have been described in detail, and will not be repeated here.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electromagnetic operating mechanism for connecting a closing and opening component, characterized in that, It includes a driving component and a linkage component. The driving component includes an electromagnetic component and a push-pull rod connected to the electromagnetic component. One end of the linkage component is connected to the push-pull rod, and the other end is connected to the closing and opening component. The electromagnetic component drives the push-pull rod to reciprocate, and the push-pull rod drives the linkage component to move to close or open the closing and opening component. The electromagnetic component includes a moving iron core, a first static iron core, a second static iron core, and a first coil and a second coil arranged at intervals. The moving iron core is arranged in the accommodation space formed by the first coil and the second coil. The first static iron core and the second static iron core are respectively arranged on both sides of the accommodation space. One end of the moving iron core facing the first static iron core is connected to the push-pull rod, and the push-pull rod passes through one end of the first static iron core and is connected to the linkage component. The electromagnetic component further includes a first return spring connected between the moving iron core and the first static iron core or a second return spring connected between the moving iron core and the second static iron core. When the first coil and the second coil are not energized, the first return spring or the second return spring is in a natural elongation state; alternatively, the electromagnetic component further includes a first return spring connected between the moving iron core and the first static iron core and a second return spring connected between the moving iron core and the second static iron core. When the first coil and the second coil are not energized, the first return spring and the second return spring exert the same magnitude of force on the moving iron core. The linkage component includes a turntable, a slider, a first connecting rod, and a second connecting rod. A cavity is provided on the slider. 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 slider, and the other end is rotatably connected to the turntable. One end of the second connecting rod is rotatably connected to the turntable, and the other end is connected to the closing and opening component.

2. The electromagnetic operating mechanism according to claim 1, characterized in that, The cavity has a preset stroke width along the movement direction of the push-pull rod. After the push-pull rod moves to the first end of the cavity, it pushes the slider to move in a direction away from the first static iron core. After the push-pull rod moves to the second end of the cavity, it pulls the slider to move in a direction close to the first static iron core.

3. The electromagnetic operating mechanism according to claim 1, characterized in that, The driving component further includes an installation housing. The moving iron core, the first static iron core, the second static iron core, the first coil, and the second coil are all located inside the installation housing. An opening is provided on the installation housing, and the push-pull rod passes through one end of the first static iron core and passes out through the opening and is connected to the linkage component.

4. The electromagnetic operating mechanism according to claim 1, characterized in that, It further includes a control module electrically connected to the electromagnetic component. The control module controls the first coil or the second coil to be energized to realize the reciprocating movement of the moving iron core.

5. A circuit breaker, characterized in that, It includes a housing and a closing and opening component arranged inside the housing and the electromagnetic operating mechanism according to any one of claims 1-4.

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