Electrically-operated circuit breaker and electrically-operated mechanism

Abstract

The invention provides an electrically-operated circuit breaker which comprises an electrically-operated mechanism and at least further comprises an insulating shell, a moving contact, a static contact, an operating mechanism, an operating handle and a wiring end, and the insulating shell at least comprises a base and an upper cover or / and a middle cover; the electric operating mechanism is arranged on the upper cover or the middle cover or between the upper cover and the middle cover, the operating handle extends out of the upper cover or the middle cover, and the electric operating mechanism is at least provided with an electric device, a linkage rod, a connecting rod and an energy storage device; the electric operating mechanism is movably connected with the operating handle, and when the electric operating mechanism drives the operating mechanism to be switched on or switched off, the energy storage device releases energy to pull or push the linkage rod or / and the connecting rod to one side outside the central axis, so that the circuit breaker can perform dead-zone-free switching work through the operating handle. When the motor loses power or fails due to burning loss, the electric mode and the manual mode of the circuit breaker do not need to be switched, and the handle can be directly operated to normally open and close the circuit breaker.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to an electrically operated circuit breaker and an electrically operated mechanism. Background Art

[0002] The electric operating mechanism is an electric device used to control the closing and opening of the circuit breaker. It can realize the closing and opening process of the circuit breaker remotely and automatically, and can improve the use efficiency and working reliability of the circuit breaker. The electric operating mechanism can be operated both electrically and manually. When the traditional electric operating mechanism is operated electrically, when the motor drive mechanism rotates to a certain angle, a power outage or motor stall failure occurs suddenly, forming a locked state that makes manual operation impossible, thereby causing the electric operating mechanism to fail. In addition, most traditional electric operating mechanisms use multi-stage gear transmission or rack and pinion transmission, which have complex structures, low assembly efficiency, high parts processing precision requirements, and high production costs.

[0003] For example, the connection mechanism between the motor and the operating handle in the electric operating mechanism of the transmission mostly adopts a crank slider mechanism, in which one end of the connecting rod is connected to the operating handle, the other end is connected to the crank, and the other end of the crank is connected to the motor. During electric operation, the circular motion of the motor can be converted into reciprocating linear motion of the operating handle in the length direction of the circuit breaker. During manual operation, the linear motion of the operating handle can be converted into circular motion of the crank. However, when the electric operation stops at the two extreme positions where the connecting rod and the crank are in a straight line (center axis), the force transmitted to the crank by the connecting rod cannot generate a torque to rotate the crank. The crank slider mechanism is blocked, and the manual operating handle cannot convert the linear motion into the circular motion of the crank. At this time, the manual operation is affected by the electric operation and cannot be carried out normally.

[0004] Therefore, there is an urgent need to provide a technical solution in which the electric operation and manual operation of the electric operating mechanism do not affect each other under any working conditions and the structure is simple and reliable. Summary of the invention

[0005] Based on the above background, the purpose of the present invention is to provide an electrically operated circuit breaker and an electrically operated mechanism, which can directly operate the handle to normally close and open the circuit breaker without switching between electric mode and manual mode when the motor loses power or burns out.

[0006] In the first aspect, the present application discloses an electrically operated circuit breaker, including an electric operating mechanism, the circuit breaker also includes at least an insulating shell, a moving contact, a static contact, an operating mechanism, an operating handle, and a terminal, the insulating shell at least includes a base, an upper cover and / or a middle cover; the electric operating mechanism is arranged on the upper cover or the middle cover or between the upper cover and the middle cover, and the operating handle extends out of the upper cover or the middle cover; the electric operating mechanism is provided with at least an electric device, a linkage rod, a connecting rod, and an energy storage device; the electric operating mechanism is movably connected to the operating handle; when the electric operating mechanism drives the operating mechanism to close or after closing, the energy storage device releases energy to pull or push the linkage rod and / or the connecting rod to one side outside the central axis, so that the circuit breaker can perform dead zone-free switching through the operating handle.

[0007] In the above embodiment, when electric operation and manual operation exist at the same time, the existing problem of using an external wrench to perform manual opening and closing work is solved, and the problem that the external wrench is easy to be lost, resulting in the inability to perform manual operation on site, is solved. On-site quick closing and quick opening operations can be achieved, faults can be quickly removed, and the power outage time due to accidents can be shortened.

[0008] In some embodiments, the central axis is a line connecting the center of one end of the connecting rod close to the operating handle and the rotation center of the connecting rod.

[0009] In some embodiments, the electric device further includes a motor and a driving member, and the rotation center of the connecting rod is coaxially arranged with the center of the motor output shaft and the rotation center of the driving member.

[0010] In the above embodiment, by setting the rotation center of the connecting rod coaxially with the center of the motor output shaft and the rotation center of the driving member, the motor output shaft, the driving member and the connecting rod rotate coaxially, the structure is simple and the assembly is firm, which can improve the accuracy of the rotation center of the connecting rod, improve the transmission reliability of the electric operating mechanism, and further improve the reliability of the circuit breaker.

[0011] In some embodiments, in a plane perpendicular to the axis of the motor output shaft, the connection line at both ends of the connecting rod and the projection line of the connection line at both ends of the connecting rod on the plane form an angle α. Under the energy storage effect of the energy storage device, the angle α is between 5° and 175°.

[0012] In the above embodiment, the angle α is between 5° and 175°, which facilitates the manual operating handle to perform closing and opening operations on the circuit breaker after the electric operation circuit breaker is closed and opened, and the manual operation and the electric operation do not affect each other.

[0013] In some embodiments, the electric device is disposed above or below the operating handle along the length direction of the circuit breaker.

[0014] In some embodiments, the driving member is fixed on the output shaft of the motor.

[0015] In some embodiments, the linkage rod is movably disposed on an output shaft of the motor or around the motor.

[0016] In some embodiments, the driving member drives the connecting rod to move.

[0017] In some embodiments, one end of the connecting rod is movably connected to the linkage rod, and the other end is directly or indirectly movably connected to the operating handle with a certain stroke.

[0018] In some embodiments, the energy storage device is any one or any combination of an elastic member, a permanent magnet steel, a shunt release, and an undervoltage release.

[0019] In some embodiments, the elastic member is a spring, and the spring is any one of a tension spring, a torsion spring, a cylindrical spring, and a leaf spring.

[0020] In some embodiments, one end or one leg of the elastic member is respectively disposed on the driving member, the linkage rod, the connecting rod or the base.

[0021] In some embodiments, one end or one leg of the elastic member is directly or indirectly disposed on the middle cover or the upper cover.

[0022] In some embodiments, after the energy storage device stores energy due to the movement of the driving member or the linkage rod or the connecting rod, the connecting rod is pulled or pushed from a position without passing the dead angle to a position with passing the dead angle after the connecting rod moves a certain angle.

[0023] In the above embodiment, an energy storage device is provided on the electric operating mechanism, and the energy storage characteristics of the energy storage device are utilized to enable the electric operating mechanism to overcome the dead point state.

[0024] In some embodiments, the motor is disposed on the base and then on the upper cover or the middle cover.

[0025] In some embodiments, the movement axis of the operating mechanism and the movement axis of the operating handle are two horizontal lines.

[0026] In the above embodiment, the operating handle is arranged on the left side in the width direction of the circuit breaker, and the electronic controller is arranged on the right side in the width direction of the circuit breaker. The handle and the electronic controller are arranged relative to the electric operating mechanism. In other embodiments, the operating handle is arranged on the right side in the direction of the circuit breaker, and the electronic controller is arranged on the left side in the direction of the circuit breaker. Such an arrangement makes full use of the space in the width direction of the insulating shell and realizes a reasonable layout of the components in the width direction of the circuit breaker, which can greatly reduce the width of the circuit breaker. More circuit breakers of this application can be installed side by side in a distribution cabinet of the same width, which can save space in the distribution cabinet.

[0027] In some embodiments, the circuit breaker is provided with an electronic controller and / or a lightning protection device and / or a power supply device and / or a communication device.

[0028] In some embodiments, the lightning protection device or the communication device or the power supply device is a detachable module.

[0029] In the above embodiment, the lightning protection device, the communication device, and the power supply device are each installed on the circuit breaker as an independent module, thereby facilitating plug-in installation and replacement, and the circuit breaker can be configured with different electronic modules simultaneously or separately to meet different usage requirements, thereby reducing the preparation cost of the circuit breaker and facilitating maintenance.

[0030] In some embodiments, the lightning protection device, the communication device, and the power supply device are electrically connected to the electronic controller respectively.

[0031] In some embodiments, the lightning protection device is disposed on the right side of the operating handle.

[0032] In some embodiments, the lightning protection device is disposed on the upper right side of the operating handle.

[0033] In some embodiments, the electronic controller is disposed below the power supply device and / or the lightning protection device.

[0034] In some embodiments, the communication device is disposed below the operating handle.

[0035] In the above embodiment, the lightning protection device is arranged at the upper right of the operating handle, the electronic controller is arranged below the power supply device and / or the lightning protection device, and the communication device is arranged below the operating handle. The space in the width direction of the insulating shell of the circuit breaker can be fully utilized to achieve a reasonable layout of the components in the width direction of the circuit breaker, which can greatly reduce the width of the circuit breaker. More circuit breakers of this application can be installed side by side in the same width distribution cabinet, which can save space in the distribution cabinet.

[0036] In some embodiments, the height of the insulating housing on one side where the electronic controller or lightning protection device or communication device or power supply device is installed is higher than the height of the insulating housing on the other side of the operating handle.

[0037] In the above embodiment, the operating handle can not only extend out of the insulating housing to facilitate manual operation, but also save more space, reduce the overall height of the circuit breaker, thereby reducing the volume of the circuit breaker and realizing the miniaturization of the circuit breaker. At the same time, it can also save the overall height of the distribution cabinet and greatly improve the space utilization rate in the distribution cabinet.

[0038] In some embodiments, a groove is provided on the upper cover, and the top of the operating handle passes through the groove on the upper cover and exceeds the insulating shell of the circuit breaker.

[0039] In some embodiments, the groove is surrounded by side walls.

[0040] In some embodiments, the groove is provided with a first side wall in the direction of the incoming line end, and a second side wall in the direction of the outgoing line end, and both the first side wall and the second side wall are stepped.

[0041] In some embodiments, a third side wall and a fourth side wall are disposed on the groove relative to the movement axis of the operating handle, and the third side wall is disposed at a certain angle to the movement axis of the operating handle.

[0042] In some embodiments, the fourth side wall is close to an insulating shell on one side where an electronic controller or a lightning protection device or a communication device or a power supply device is installed, and a heightened wall is also provided on the fourth side wall.

[0043] On the other hand, the present application discloses an electric operating mechanism, which is applied to an electrically operated circuit breaker and at least includes a motor, a driving member, a linkage rod, a connecting rod, an energy storage device, and a base. The driving member is fixed on the output shaft of the motor; the connecting rod is movably arranged on the output shaft of the motor or around the motor; the driving member drives the connecting rod to move; one end of the connecting rod is movably connected to the connecting rod, and the other end is directly or indirectly movably connected to the operating handle with a certain stroke; the energy storage device is any one or any combination of an elastic member, a permanent magnet, a shunt release, and an undervoltage release. The elastic member is a spring, and the spring is any one of a tension spring, a torsion spring, a cylindrical spring, and a leaf spring. One end or one leg of the elastic member is respectively arranged on the driving member, the linkage rod, the connecting rod, or the base; after the energy storage device is stored by the driving member, the linkage rod, or the connecting rod movement, after the connecting rod moves a certain angle, it pulls or pushes the connecting rod from a position without a dead angle to a position with a dead angle.

[0044] In some embodiments, one end of the driving member is linked to the output shaft of the motor, and the other end of the driving member extends outward to form at least an extension arm, and a hole and a protrusion are provided on the extension arm.

[0045] In some embodiments, a second driving member is disposed on the extension arm or a driving surface is disposed on the side arm.

[0046] In some embodiments, one end of the linkage rod is disposed on the motor output shaft and extends outward to the other end to form an extension arm, and a first connection hole or a first connection shaft is disposed on the extension arm.

[0047] In some embodiments, a moving part is disposed on the extension arm or a moving surface is disposed on the side arm.

[0048] In some embodiments, the second driving member or driving surface is arranged opposite to the moving member or moving surface with respect to the rotation direction of the motor.

[0049] In some embodiments, one end of the connecting rod is arranged on the first connecting hole or the first connecting shaft of the connecting rod, and the other end is directly or indirectly provided with a second connecting hole or a second connecting shaft.

[0050] In some embodiments, under the energy storage effect of the energy storage device, the angle α will not be 0° and 180°.

[0051] In some embodiments, the motor is arranged vertically or horizontally on the base.

[0052] In some embodiments, a push rod is movably disposed on the second connecting hole or the second connecting shaft of the connecting rod.

[0053] In some embodiments, the push rod extends outward and forms a third connecting hole.

[0054] In some embodiments, an electronic controller is further included, the motor is signal-connected to the electronic controller, and the electronic controller transmits a signal to control the rotation of the motor.

[0055] In some embodiments, at least two signal switches are provided around the driving member, and the switches are used to detect the moving position of the driving member and feed back the position signal to the electronic controller to control the motor to stop. The signal switch is fixed on the base or a part based on the base.

[0056] In the above embodiment, the micro switch is arranged along the rotation direction of the driving member, which not only saves space but also has good position detection reliability and high detection accuracy.

[0057] In some embodiments, the signal switch is a micro switch, and a pressure foot is provided on the micro switch, and the pressure foot is linked to a protrusion provided on the driving member.

[0058] In the above embodiment, the micro switch is linked with the driving member, and by setting a simple linkage structure, the controller can easily obtain the signal of the position of the electric operating mechanism.

[0059] In some embodiments, the electric operating structure is provided with an external operating member.

[0060] In some embodiments, the external operating member is directly or indirectly movably connected to the connecting rod.

[0061] In some embodiments, the electric operating mechanism is further provided with a cover.

[0062] In some embodiments, a signal indicating device or a signal output device is disposed on the cover.

[0063] In some embodiments, a power input device is provided on the cover.

[0064] The beneficial effects of the present invention are:

[0065] 1. The present application arranges the electric operating mechanism in the circuit breaker, and the circuit breaker fully utilizes the space in the width direction of the insulating shell, realizes the reasonable layout of the components in the width direction of the circuit breaker, and can greatly reduce the width of the circuit breaker. More circuit breakers of the present application can be installed side by side in the distribution cabinet of the same width, which can save the space of the distribution cabinet.

[0066] 2. The circuit breaker disclosed in the present application has an external operating handle. When electric operation and manual operation exist at the same time, it solves the existing problem of using an external wrench to perform manual opening and closing work, and solves the problem that the external wrench is easy to lose, resulting in the inability to perform manual operation on site. It can realize on-site fast closing and opening operations, quickly cut off faults, and shorten the power outage time of accidents.

[0067] 3. The circuit breaker of the present application can be manually operated to close the circuit breaker and energize the circuit breaker when the electric operation mode fails, thereby ensuring timely power supply, reducing user complaints, and solving a long-standing problem that traditional products have not been able to solve for decades.

[0068] 4. The electric operating mechanism of the present application has a simple structure, stable and reliable transmission, high assembly efficiency and low production cost.

[0069] 5. The operating handle of the circuit breaker of the present application can not only be extended out of the insulating casing to facilitate manual operation, but also save more space, reduce the overall height of the circuit breaker, thereby reducing the volume of the circuit breaker and realizing the miniaturization of the circuit breaker. At the same time, it can also save the overall height of the distribution cabinet and greatly improve the space utilization rate in the distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0071] Figure 1 It is a structural schematic diagram of an electric operating mechanism disclosed in the first embodiment;

[0072] Figure 2 It is a structural schematic diagram of another electric operating mechanism disclosed in the second embodiment;

[0073] Figure 3 is a schematic structural diagram of a driving member disclosed in the first embodiment;

[0074] Figure 4 is a schematic structural diagram of the linkage rod disclosed in the first embodiment;

[0075] Figure 5 It is a schematic diagram of the micro switch disclosed in the first embodiment detecting the position of the electric operating mechanism;

[0076] Figure 6 A schematic diagram of an electric operating mechanism in which the elastic member is a compression spring according to another preferred embodiment;

[0077] Figure 7 A schematic diagram of an electric operating mechanism in which the elastic member is a tension spring according to another preferred embodiment;

[0078] Figure 8 The internal structure of the electrically operated circuit breaker disclosed in the first embodiment is schematically shown;

[0079] Fig. 9 It is an exploded schematic diagram of the structure of the electrically operated circuit breaker disclosed in the first embodiment;

[0080] Fig.10 A schematic diagram of the connection between the circuit breaker operating handle and the external handle disclosed in the first embodiment;

[0081] Fig.11 is a schematic diagram of the position when the angle α between the linkage rod and the connecting rod is 180°;

[0082] Fig.12 is a schematic diagram of the position when the angle α between the linkage rod and the connecting rod is 0°;

[0083] Fig.13 A force analysis diagram of the circuit breaker disclosed in the first embodiment in a closed position;

[0084] Fig.14 A force analysis diagram of the circuit breaker disclosed in the first embodiment in the open position;

[0085] Fig.15 A schematic diagram of the circuit breaker structure disclosed in the second embodiment;

[0086] Fig.16 A schematic diagram of the connection between a lightning protection device and an insulating housing in another preferred embodiment of the present invention;

[0087] Fig.17It is a schematic structural diagram of a circuit breaker according to another embodiment of the present invention. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention will be described in more detail below in conjunction with the drawings in the embodiment of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0089] The existing circuit breaker is provided with both manual operation and electric operation mechanism. The positions of the two under any working conditions cannot affect each other's operation. Especially during electric operation, when it is rotated to a certain angle, a power outage suddenly occurs, forming a locked state that makes manual operation impossible. When overcurrent, overvoltage and other faults occur, the circuit breaker protection trips and the motor stops rotating due to power failure. The connecting rod transmission shaft cannot be reset to the preset position, and then the circuit breaker cannot be manually opened or closed. This is because when the electric mechanism is closed, the connecting rod transmission shaft is not reset to the preset position, and the handle connecting rod is pressed against, causing the handle to stay in the closed position, making it impossible to perform manual opening operation. The closing and opening states of the circuit breaker are inconsistent with the handle indication, which is easy to cause safety accidents. This is mainly because the handle of the manual operation of the traditional circuit breaker is installed inside the circuit breaker, and it is necessary to use auxiliary tools for manual closing and opening. If the operation and maintenance personnel cannot find the auxiliary tools in time when manual closing and opening are required on site, the fault problem cannot be solved in time and quickly.

[0090] In order to solve the above technical problems of traditional circuit breakers, the present application provides an electric operating mechanism and a circuit breaker, which can effectively solve the above problems. The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0091] First embodiment

[0092] Please refer to Figure 1As shown, this embodiment discloses an electric operating mechanism, including a base 100, an electric device, a linkage rod 400, a linkage rod 500, an energy storage device 600, an electronic controller 800, and a micro switch 900. The electric device includes a motor 200 and a driving member 300. The center P of the first end of the linkage rod 500 and the line connecting the rotation center O of the linkage rod 400 form a central axis OP. The first end of the linkage rod 500 refers to the end of the linkage rod 500 away from the linkage rod 400. The motor 200 is mounted on the base 100. The motor 200 is provided with the output shaft 201. The output shaft 201 is fixedly connected to one end 301 of the driving member 300, and the output shaft 201 is movably connected to one end 401 of the linkage rod 400. In this embodiment, the rotation center of the linkage rod 400 is coaxially arranged with the center of the output shaft 201 and the rotation center of the driving member 300.

[0093] Please continue to refer to Figure 1 In a plane perpendicular to the axis of the output shaft 201 of the motor 200, the connection line at both ends of the connecting rod and the connection line at both ends of the connecting rod form an angle α between the projection lines on the plane. Under the energy storage effect of the energy storage device 600, the angle α is maintained between 5° and 175°.

[0094] For details, please refer to Figure 3 The driving member 300 extends outward to the other end to form an extension arm, a hole 3031 is provided on the extension arm, and a driving surface 3033 is provided on the side arm of the extension arm.

[0095] See also Figure 4 The linkage rod 400 extends outward to the other end to form at least one extension arm, and at least one first connection hole 411 or a first connection shaft 412 is provided on the other end of the extension arm, and a moving surface 4033 is provided on the side arm of the extension arm.

[0096] See also Figure 5 One end of the connecting rod 500 is connected to the first connecting hole 411 of the connecting rod 400 by riveting, and the other end is provided with a second connecting hole 5021 or a second connecting shaft 5022.

[0097] In this example, please continue to refer to Figure 5The elastic member is arranged on the driving member 300 and the connecting rod 400, and the two ends of the elastic member are connected to the connecting rod 400 and the driving member 300 respectively. The elastic member is a torsion spring 601, and one arm of the torsion spring 601 is inserted into the hole 3031 arranged on the driving member, and the other arm is inserted into the opening groove 4022 arranged on the connecting rod 400. The two arms of the torsion spring 601 are restricted by a simple limiting structure to prevent the torsion spring 601 from running out of the driving member 300 during compression and release, thereby ensuring the reliability of the electric operating mechanism. The torsion spring 601 includes a spring coil 6013, and the spring coil 6013 is sleeved on the driving member 300. After the elastic member is subjected to the movement of the driving rod 300 or the connecting rod 400 to store energy, after the connecting rod moves a certain angle, it pushes the connecting rod 500 from the position without passing the dead angle to the position passing the dead angle.

[0098] Furthermore, the driving surface 3033 and the moving surface 4033 are arranged opposite to each other along the rotation direction of the motor, and the driving surface 3033 and the moving surface 4033 can be in contact or separated. When in electric operation, the motor 200 drives the driving member 300 to rotate, and overcomes the torque of the elastic member to drive the driving surface 3033 to contact the moving surface 4033, thereby driving the connecting rod 400 to perform circular motion around the motor output shaft 201. After the connecting rod rotates a certain angle, the driving surface 3033 and the moving surface 4033 are separated under the action of the elastic member.

[0099] In some other preferred embodiments, please refer to Figure 6 The elastic member may also be a compression spring 602, and the compression spring 602 is arranged on the driving surface 3033 or the moving surface 4033. When the driving surface 3033 of the driving member 300 contacts the moving surface 4033 of the connecting rod 400, the compression spring 602 is in a compressed state. When the driving surface 3033 of the driving member 300 is separated from the moving surface 4033 of the connecting rod 400, the compression spring 602 is in a released state. After storing energy, the compression spring 602 pushes the connecting rod 500 from a position without a dead angle to a position with a dead angle.

[0100] In some other preferred embodiments, please refer to Figure 7 The elastic member may also be a tension spring 603, one end of which is connected to the connecting rod 500, and the other end is connected to a fixing member arranged on the base. Thus, after the elastic member stores energy due to the movement of the connecting rod 500, it pulls the connecting rod 500 from a position without a dead angle to a position with a dead angle after the connecting rod moves a certain angle.

[0101] Please continue reading Figure 5In this embodiment, the electric operating mechanism is provided with an electronic controller 800, the motor 200 is connected to the electronic controller 800 by signal, and the electronic controller 800 transmits signals to control the rotation of the motor 200. Furthermore, the electric operating mechanism is also provided with two micro switches 900, and the micro switches 900 are used as position detection devices to detect the moving position of the driving member 300, and the position detection device is used to control the separable state of the driving surface 3033 of the driving member 300 and the moving surface 4033 of the connecting rod 400. The position detection device can be implemented by other means commonly used in the art, such as setting a position sensor. The micro switch 900 is arranged along the rotation direction of the driving member 300, which not only saves space, but also has good position detection reliability and high detection accuracy.

[0102] In this embodiment, the driving member 300 is provided with a protrusion 3032 protruding toward the micro switch 900, and the protrusion 3032 is linked with the micro switch 900. The protrusion 3032 touches the micro switch during the movement, thereby triggering the action of the micro switch 900. Specifically, when the motor 200 rotates to a preset position, the protrusion 3032 of the driving member 300 pushes the presser foot 901 of the micro switch 900 to switch the signal of the micro switch 900, thereby controlling the motor 200 to stop. The micro switch 900 can complete the signal switching by using a simple linkage structure, and the signal switched by the micro switch 900 is transmitted to the electronic controller 800, and the electronic controller 800 controls the motor 200 to stop.

[0103] like Figure 2 As shown, another electric operating mechanism disclosed in the second embodiment of the present invention is shown. The difference between this embodiment and the first embodiment is that the electric operating mechanism also includes a push rod 700, and the push rod 700 is movably arranged on the second connecting hole 5021 or the second connecting shaft 5022 of the connecting rod 500. The push rod 700 extends outward to the other end, and a third connecting hole 7001 is arranged on the other end.

[0104] like Figure 8It is shown that the electrically operated circuit breaker includes the electric operating mechanism 10, an insulating shell, a moving contact 12, a static contact 13, an operating mechanism 14, an operating handle 242, and a terminal 16, and the insulating shell at least includes a base 21, an upper cover 23 and a middle cover 22; the electric operating mechanism 10 is arranged on the middle cover, the operating handle 242 extends out of the upper cover 23, and the electric operating mechanism 10 is movably connected with the operating handle 242; when the electric operating mechanism 10 drives the operating mechanism 14 to close or after closing, the energy storage device 600 releases energy to push the connecting rod 400 and / or the connecting rod 500 to one side outside the central axis, specifically, to push the hinge of the connecting rod 400 and the connecting rod 500 to one side of the central axis, so as to cross the central axis OP, thereby preventing the hinge of the connecting rod and the connecting rod from being stuck on the central axis OP, so that the circuit breaker can perform dead zone-free switching operation through the operating handle.

[0105] In this embodiment, the electric operating mechanism 10 is arranged in the insulating shell. The circuit breaker fully utilizes the space in the width direction of the insulating shell, realizes the reasonable layout of the components in the width direction of the circuit breaker, and can greatly reduce the width of the circuit breaker. More circuit breakers of this application can be installed side by side in the distribution cabinet of the same width, which can save the space of the distribution cabinet.

[0106] Please combine Figure 1 , the electric operating mechanism 10 at least includes a motor 200, a driving member 300, a connecting rod 400, a connecting rod 500, an energy storage device 600, and a base 100. The driving member 300 is fixed on the output shaft 201 of the motor 200. Among them, the connecting rod 400 is movably arranged on the output shaft 201 of the motor. The driving member 300 drives the connecting rod 400 to move. One end of the connecting rod 500 is movably connected to the connecting rod 400, and the other end is directly or indirectly movably connected to the operating handle 242 with a certain stroke. In addition, the energy storage device 600 is any one or any combination of an elastic member, a permanent magnet steel, a shunt release, and an undervoltage release. Further, the elastic member is a spring, and the spring is any one of a tension spring, a torsion spring, a cylindrical spring, and a leaf spring.

[0107] Please refer to Fig. 9 , the movement axis P2 of the operating mechanism 14 and the movement axis P1 of the operating handle 242 are two horizontal lines.

[0108] Please refer to Fig.10As shown, a connecting piece 26 is provided on the operating handle 242, and the connecting piece 26 is fixedly connected to the operating handle 242 by screws. A fourth connecting shaft 262 corresponding to the second connecting hole 5021 of the connecting rod 500 is provided on one end of the connecting piece 26, and the connecting piece 26 is connected to the connecting rod 500 in an articulated manner. With such a configuration, the operating handle 242 can be linked to the electric operating mechanism 10 through the connecting piece 26, and the electric operating mechanism 10 drives the operating handle 242 to move under the instruction of the electronic controller 800 to perform remote opening and closing operations, thereby ensuring operational safety. In the example, an extension arm extends outward from the other end of the connecting piece 26, and an external handle 27 is sleeved on the extension arm. The external handle 27 is arranged on the left side of the electric operating mechanism along the width direction of the circuit breaker. The external handle 27 is fixedly connected to the connecting piece 26 by screws. The top of the external handle 27 passes through the insulating shell of the circuit breaker and exceeds the insulating shell of the circuit breaker. The external handle 27 is linked to the operating handle 242 through the connecting piece 26. The external handle 27 can be directly manually turned to drive the operating handle 242 to move. The circuit breaker can be manually closed and opened without using special tools, and the operation is more convenient.

[0109] For details, please continue to refer to Fig.10 As shown, a second connecting hole 5021 is provided on the connecting rod 500, and a fourth connecting shaft 262 is correspondingly provided on the connecting member 26. In other embodiments, a second connecting shaft 5022 is provided on the connecting rod 500, and a fourth connecting hole 261 is correspondingly provided on the connecting member 26, and the two are provided correspondingly to each other.

[0110] Furthermore, the second connecting hole 5021 of the connecting rod 500 is in the shape of a long waist, and the second connecting hole 5021 is provided with a first end face 5021a and a second end face 5021b which are relatively arranged and can contact or separate from the fourth connecting shaft 262 of the connecting member 26. When the connecting rod 400 is rotated by the driving member 300 under the drive of the motor 200, the connecting rod 400 drives the connecting rod 500 to move. After the connecting rod 500 moves a certain distance, the first end face 5021a or the second end face 5021b will contact the end of the fourth connecting shaft 262 of the connecting member and drive the connecting member 26 to move linearly together, thereby driving the operating handle 242 to move. The travel of the fourth connecting shaft 262 of the connecting member before the first end face 5021a or the second end face 5021b contacts the fourth connecting shaft 262 of the connecting member is called an idle travel. Thus, it can be ensured that the operating handle 242 can return to the tripping position after the circuit breaker trips due to a fault, and the indication of the external handle 27 is consistent with the internal contact state of the circuit breaker, so as to avoid safety accidents.

[0111] In this embodiment, the microswitch 900 includes a closing position detection microswitch 910 and an opening position detection microswitch 920. The closing position detection microswitch 910 and the opening position detection microswitch 920 are arranged relative to the axis of the motor output shaft 201. The closing position detection microswitch 910 and the opening position detection microswitch 920 are respectively connected to the electronic controller 800 with electrical signals, and the switching signals are respectively transmitted to the electronic controller 800, so that the electronic controller 800 controls the motor 200 to stop, realizing the switching between electric operation and manual operation after electric closing and electric opening.

[0112] Please continue reading Fig.10 The line between the center P of the end of the connecting rod 500 away from the connecting rod 400 and the rotation center O of the connecting rod 400 forms a central axis. When the angle α is 0° or 180°, the central axis coincides with the connecting rod 500 and the connecting rod 400. Fig.11 He Ru Fig.12 As shown, when the angle α is 180° and 0°, the external handle 27 is manually pulled to apply a force F to the connecting rod, and the two ends of the connecting rod 500 are on the same straight line as the two ends of the connecting rod 400. The force F passes through the two ends of the connecting rod 400 and cannot generate a force in the tangential direction of the connecting rod 400, that is, it cannot generate a torque to rotate the connecting rod 400. At this time, the electric operating mechanism is blocked, and the external handle 27 cannot be manually pulled to convert the linear motion of the external handle 27 into the circular motion of the connecting rod 400 through the 500 connecting rod. When the angle α is 180° and 0°, the position of the connecting rod is a dead angle position for the movement of the connecting rod 500. After the elastic member stores energy due to the movement of the connecting rod 500, after the connecting rod 500 moves a certain angle, the connecting rod 500 passes through the dead angle position where the angle α is 180° and 0°. At this time, the connecting rod 400 is separated from the driving member 300.

[0113] Specifically, Fig.13 As shown, after the energy storage device 600 stores energy due to the movement of the driving member 300, the connecting rod 500 is pushed from the position without passing the dead angle to the position after the connecting rod 500 moves a certain angle. The protrusion 3032 of the driving member 300 presses the pressure foot of the closing position detection micro switch 910, and the circuit breaker is in the electric closing position. The connecting rod 400 is separated from the driving member 300, and the end of the connecting rod 400 connected to the connecting rod 500 is on the other side of the driving member 300 relative to the axis of the motor output shaft 201. At this time, a closing force F' is applied to the external handle 27, and the force transmitted to the connecting rod is F1'. F1' can be decomposed into forces in two directions, tangent and normal to the motion curve of the force-bearing point on the connecting rod 400, which are effective forces F1 and F2 respectively. t' and null force F r ', at this time the effective force F t ' is not 0, an effective torque will be generated on the linkage rod 400, so that the linkage rod 400 rotates around the motor output shaft 201, thereby, the second connecting hole 5021 of the linkage rod makes a linear motion along the length direction of the circuit breaker, which can drive the linkage rod 400 to make a half-circle rotation along the other side of the drive member 300 relative to the axis of the motor output shaft. Driven by the linkage rod 500, the linkage rod 400 rotates away from the drive member 300, thereby realizing manual opening operation of the circuit breaker, and then applying a closing force to the external handle 27, which is transmitted to the linkage rod 500 to drive the linkage rod 400 to rotate in the direction close to the drive member 300, realizing manual opening and closing operation of the circuit breaker, and at the same time, the drive member 300 does not hinder the rotation of the linkage rod 400, thereby realizing manual operation of opening and closing of the circuit breaker, and the electric operation and manual operation do not affect each other.

[0114] like Fig.14 As shown, the protrusion 3032 of the driving member 300 presses the pressure foot of the opening position detection micro switch 920, the circuit breaker is in the electric opening position, the linkage rod 400 is separated from the driving member 300, and the end of the linkage rod 400 connected to the connecting rod 500 is on the other side of the driving member 300 opposite to the axis of the motor output shaft 201. At this time, a closing force F'' is applied to the external handle 27, and the force transmitted to the connecting rod 500 is F1''. F1'' can be decomposed into forces in two directions of the tangent and normal of the motion curve of the force point on the linkage rod 400, which are effective forces F and F respectively. t " and null force F r ”, at this time the effective force F t ” is not 0, an effective torque will be generated on the linkage rod 400, so that the linkage rod 400 rotates around the motor output shaft 201, thereby, the second connecting hole 5021 of the linkage rod makes a linear motion along the length direction of the circuit breaker, which can drive the linkage rod 400 to make a half-circle rotation along the other side of the drive member 300 relative to the axis of the motor output shaft. Driven by the linkage rod 500, the linkage rod 400 rotates in a direction away from the drive member 300, thereby realizing manual opening operation of the circuit breaker, and then applying a closing force to the external handle 27, which is transmitted to the linkage rod 500 to drive the linkage rod 400 to rotate in a direction close to the drive member 300, realizing manual opening and closing operation of the circuit breaker, and at the same time, the drive member 300 does not hinder the rotation of the linkage rod 400, thereby realizing manual opening and closing of the circuit breaker, and the electric operation and manual operation do not affect each other.

[0115] like Fig.151 is a schematic diagram of the structure of a circuit breaker according to a second embodiment of the present disclosure, wherein the electric operating mechanism further comprises a push rod 700 and a fixing rod 701, wherein the push rod 700 is movably disposed on the second connecting hole 5021 or the second connecting shaft 5022 of the connecting rod 500, and the push rod 700 extends outward to the other end, and a third connecting hole 7001 is disposed on the other end, and the third connecting hole 7001 is directly sleeved on the operating handle 242 and can slide relative to the fixing rod 701, and the fixing rod 701 ... the third connecting hole 7001 is directly sleeved on the operating handle 242 and can slide relative to the fixing rod 701, and the fixing rod 701 is movably disposed on the second connecting hole 5021 or the second connecting shaft 5022 of the connecting rod 500 01 is fixed to an insulating shell which is connected in sequence with the base 21, the middle cover 22 and the upper cover 23 to form a whole. A hole is provided on the fixing rod 701 for the operating handle 242 to pass through. A moving groove 7011 is provided on the fixing rod 701. The push rod 700 can move linearly along the moving groove 7011. With such a configuration, the electric operating mechanism 10 can be directly connected to the operating handle 242 in a linkage manner without the need for an additional operating handle. In addition, the electric operating mechanism is flattened to reduce the height of the product.

[0116] In a preferred embodiment, continue to refer to Fig. 9 As shown, the circuit breaker is provided with an electronic controller 800, a lightning protection device 251, a power supply device 252 and a communication device 253, and the lightning protection device 251, the power supply device 252 and the communication device 253 are respectively connected to the electronic controller 800 by electrical signals. Among them, the lightning protection device 251 is used for lightning protection to protect the circuit breaker from damage caused by lightning overvoltage impact. The lightning protection device 251 is provided with each phase current indicator light, and the indicator light is used to indicate whether each phase lightning protection circuit of the circuit breaker is intact, so that it is easy to check. In a preferred embodiment of the present invention, the lightning protection device 251 is detachably connected to the insulating housing of the circuit breaker by screw connection. In this way, the lightning protection device 251 can be directly plugged in and out, and the plug-in installation and replacement are convenient and fast. In this embodiment, when the lightning protection device is damaged, the maintenance personnel can quickly locate the faulty module by remote viewing, which is convenient for the maintenance personnel to accurately repair and replace the lightning protection device.

[0117] In another preferred embodiment of the present invention, Fig.16 As shown, a buckle 2511 is provided on the lightning protection device 251, and a slot is provided on the upper cover 23. The lightning protection device 251 is connected to the insulating housing of the circuit breaker through the buckle 2511, thereby realizing screw-free assembly, saving costs and improving assembly efficiency.

[0118] The power supply device 252 is used to supply power to the electronic controller 800 to ensure the normal operation of the electronic controller 800. In a preferred embodiment of the present invention, the power supply device 252 is detachably connected to the insulating housing to facilitate rapid maintenance and replacement when the power supply device fails.

[0119] The communication device 253 is arranged in the insulating shell of the circuit breaker to realize the communication connection between the circuit breaker and the host computer, so as to receive the control instructions issued by the host computer and control the circuit breaker to perform corresponding actions through the control instructions. In a preferred embodiment of the present invention, the communication device 253 is detachably connected in the insulating shell.

[0120] In this embodiment, please continue to refer to Fig.16 As shown, the lightning protection device 251 is arranged at the upper right of the operating handle 242, the power supply device 252 and the lightning protection device 251 are arranged up and down along the height direction of the circuit breaker, the electronic controller 800 is arranged below the power supply device 252 and / or the lightning protection device 251, and the communication device 253 is arranged below the operating handle 242. In this way, the circuit breaker is reasonably arranged, the setting space of the insulating shell can be utilized as much as possible, the width of the circuit breaker body can be reduced, the volume of the circuit breaker can be greatly reduced, and more circuit breakers of the present invention can be installed side by side in the same width distribution cabinet, which can save the space of the distribution cabinet.

[0121] Please continue as Fig.16 As shown, the height of the insulating shell on one side where the electronic controller 800 or the lightning protection device 251 or the communication device 253 or the power supply device 252 is installed is higher than the height of the insulating shell on the other side of the operating handle 242, and a groove 231 is provided on the upper cover, and the top of the operating handle 242 passes through the groove 231 on the upper cover 23 and exceeds the insulating shell of the circuit breaker, and side walls are provided around the groove, and the groove is provided with a first side wall 232 in the direction of the incoming line end, and a second side wall 234 in the direction of the outgoing line end, and the first side wall 232 and the second side wall 234 are both stepped. The groove 231 is provided with a third side wall 235 and a fourth side wall 236 relative to the movement axis of the operating handle 242. The third side wall 235 is arranged at a certain angle to the movement axis of the operating handle 242. The fourth side wall 236 is close to an insulating shell on one side where the electronic controller 800, the lightning protection device 251, the communication device 253 or the power supply device 252 is installed. A heightened wall 237 is also arranged on the fourth side wall 236.

[0122] In some other preferred embodiments, Fig.17As shown, the electric operating mechanism 10 can be arranged outside the circuit breaker body as an external accessory, and the electric operating mechanism 10 can be detachably connected to the circuit breaker body. The electric operating structure is provided with an external operating member 101, and the external operating member is directly or indirectly movably connected to the connecting rod 500. The electric operating mechanism is also provided with a cover 102, and a signal indicating device 103 or a signal output device 104 is provided on the cover, and a power input device 105 is also provided on the cover. The electric operating mechanism 10 is arranged along the height direction of the operating handle provided on the circuit breaker body, and can also be arranged along the width direction or length direction of the circuit breaker body. In this way, the electric operating mechanism is an independent module, which is convenient for installation and disassembly, and can adapt to the needs of different distribution cabinets.

[0123] The present invention can be realized in other specific forms without departing from its spirit and essential characteristics. The current embodiment is considered to be exemplary and not restrictive in all aspects, and the scope of the present invention is defined by the appended claims rather than the above description, and all changes falling within the meaning of the claims and the scope of equivalents are thus included in the scope of the present invention.

Claims

1. An electrically operated circuit breaker, comprising an electric operating mechanism, the circuit breaker further comprising at least an insulating housing, a moving contact, a stationary contact, an operating mechanism, an operating handle, and a terminal, the insulating housing at least comprising a base, an upper cover or / and a middle cover; the electric operating mechanism is arranged on the upper cover or the middle cover or between the upper cover and the middle cover, and the operating handle extends out of the upper cover or the middle cover; characterized in that: The electric operating mechanism is at least provided with an electric device, a linkage rod, a connecting rod, and an energy storage device; the electric operating mechanism is movably connected to an operating handle; when the electric operating mechanism drives the operating mechanism to close or after closing, the energy storage device releases energy to pull or push the linkage rod and / or the connecting rod to one side outside the central axis, so that the circuit breaker can perform dead zone-free closing operation through the operating handle.

2. The electrically operated circuit breaker according to claim 1, characterized in that: The central axis is a line connecting the center of one end of the connecting rod close to the operating handle and the rotation center of the connecting rod.

3. The electrically operated circuit breaker according to claim 1, characterized in that: The electric device further comprises a motor and a driving member, and the rotation center of the connecting rod is coaxially arranged with the center of the motor output shaft and the rotation center of the driving member.

4. An electrically operated circuit breaker according to claim 1 or 3, characterized in that: In a plane perpendicular to the axis of the motor output shaft, the connection line at both ends of the connecting rod and the projection line of the connection line at both ends of the connecting rod on the plane form an angle α. Under the energy storage effect of the energy storage device, the angle α is between 5° and 175°.

5. The electrically operated circuit breaker according to claim 1, characterized in that: The electric device is arranged above or below the operating handle along the length direction of the circuit breaker.

6. The electrically operated circuit breaker according to claim 3, characterized in that: The driving member is fixed on the output shaft of the motor.

7. The electrically operated circuit breaker according to claim 3, characterized in that: The connecting rod is movably arranged on the output shaft of the motor or around the motor.

8. The electrically operated circuit breaker according to claim 3, characterized in that: The driving member drives the connecting rod to move.

9. The electrically operated circuit breaker according to claim 1, characterized in that: One end of the connecting rod is movably connected to the linkage rod, and the other end is directly or indirectly movably connected to the operating handle with a certain stroke.

10. The electrically operated circuit breaker of claim 1, wherein: The energy storage device is any one or any combination of an elastic member, a permanent magnet steel, a shunt release, and an undervoltage release.

11. An electrically operated circuit breaker according to claim 10, characterized in that: The elastic member is a spring, and the spring is any one of a tension spring, a torsion spring, a cylindrical spring, and a leaf spring.

12. The electrically operated circuit breaker of claim 10, wherein: One end or one leg of the elastic member is arranged on a base where the driving member, the linkage rod, the connecting rod or the electric operating mechanism is arranged.

13. The electrically operated circuit breaker of claim 10, wherein: One end or one leg of the elastic member is directly or indirectly arranged on the middle cover or the upper cover.

14. The electrically operated circuit breaker of claim 10, wherein: After the energy storage device stores energy due to the movement of the driving member or the linkage rod or the connecting rod, the connecting rod is pulled or pushed from a position without passing the dead angle to a position passing the dead angle after the connecting rod moves a certain angle.

15. An electrically operated circuit breaker according to claim 3 or 12, characterized in that: The motor is arranged on the base and then on the upper cover or the middle cover.

16. The electrically operated circuit breaker of claim 1, wherein: The movement axis of the operating mechanism and the movement axis of the operating handle are two horizontal lines.

17. The electrically operated circuit breaker of claim 1, wherein: The circuit breaker is provided with an electronic controller and / or a lightning protection device and / or a power supply device and / or a communication device.

18. An electrically operated circuit breaker according to claim 17, characterized in that: The lightning protection device, power supply device or communication device is a detachable module.

19. The electrically operated circuit breaker of claim 17, wherein: The lightning protection device, the communication device and the power supply device are electrically connected to the electronic controller respectively.

20. An electrically operated circuit breaker according to claim 16 or 17, characterized in that: The lightning protection device is arranged on the right side of the operating handle.

21. An electrically operated circuit breaker according to claim 20, characterized in that: The lightning protection device is arranged on the upper right side of the operating handle.

22. An electrically operated circuit breaker according to claim 21, characterized in that: The electronic controller is arranged below the power supply device and / or the lightning protection device.

23. The electrically operated circuit breaker of claim 17, wherein: The communication device is arranged below the operating handle.

24. The electrically operated circuit breaker of claim 17, wherein: The height of the insulating housing on one side where the electronic controller, the lightning protection device, the communication device or the power supply device is installed is higher than the height of the insulating housing on the other side of the operating handle.

25. The electrically operated circuit breaker of claim 1, wherein: The upper cover is provided with a groove, and the top of the operating handle passes through the groove on the upper cover and exceeds the insulating shell of the circuit breaker.

26. An electrically operated circuit breaker according to claim 25, characterized in that: The groove is surrounded by side walls.

27. An electrically operated circuit breaker according to claim 25, characterized in that: The groove is provided with a first side wall close to the line inlet end direction, and a second side wall close to the line outlet end direction, and both the first side wall and the second side wall are in a stepped shape.

28. An electrically operated circuit breaker according to claim 25, characterized in that: The groove is provided with a third side wall and a fourth side wall relative to the movement axis of the operating handle, and the third side wall is provided at a certain angle to the movement axis of the operating handle.

29. An electrically operated circuit breaker according to claim 28, characterized in that: The fourth side wall is close to the insulating shell on one side where the electronic controller, lightning protection device, communication device or power supply device is installed, and a heightened wall is also arranged on the fourth side wall.

30. An electric operating mechanism, applied to a circuit breaker, comprises at least a motor, a driving member, a linkage rod, a connecting rod, an energy storage device, and a base. The driving member is fixedly mounted on the output shaft of the motor; The linkage rod is movably arranged on the output shaft of the motor or around the motor; The driving member drives the connecting rod to move; One end of the connecting rod is movably connected to the linkage rod, and the other end is directly or indirectly movably connected to the operating handle with a certain stroke; The energy storage device is any one or any combination of an elastic member, a permanent magnet steel, a shunt release, and an undervoltage release. The elastic member is a spring, and the spring is any one of a tension spring, a torsion spring, a cylindrical spring, and a leaf spring; one end or one leg of the elastic member is arranged on the driving member, the linkage rod, the connecting rod, or the base; Features: After the energy storage device stores energy due to the movement of the driving member or the linkage rod or the connecting rod, the connecting rod is pulled or pushed from a position without passing the dead angle to a position passing the dead angle after the connecting rod moves a certain angle.

31. The electric operating mechanism according to claim 30, characterized in that: One end of the driving member is linked to the output shaft of the motor, and the other end of the driving member extends outward to form at least an extension arm, and a hole and a protrusion are arranged on the extension arm.

32. The electric operating mechanism according to claim 31, characterized in that: A second driving member is arranged on the extension arm or a driving surface is arranged on the side arm.

33. The electric operating mechanism according to claim 30, characterized in that: One end of the linkage rod is arranged on the motor output shaft and extends outward to the other end to form an extension arm, and a first connection hole or a first connection shaft is arranged on the extension arm.

34. The electric operating mechanism according to claim 33, characterized in that: A moving part is arranged on the extension arm or a moving surface is arranged on the side arm.

35. The electric operating mechanism according to claim 32, characterized in that: The second driving member or driving surface and the moving member or moving surface are arranged opposite to each other with respect to the rotation direction of the motor.

36. The electric operating mechanism according to claim 30, characterized in that: One end of the connecting rod is arranged on the first connecting hole or the first connecting shaft of the connecting rod, and the other end is directly or indirectly provided with a second connecting hole or a second connecting shaft.

37. The electric operating mechanism according to claim 30, characterized in that: Under the energy storage effect of the energy storage device, the angle α will not be 0° or 180°.

38. The electric operating mechanism according to claim 30, characterized in that: The motor is arranged on the base in a vertical or horizontal manner.

39. The electric operating mechanism according to claim 30, characterized in that: A push rod is movably arranged on the second connecting hole or the second connecting shaft of the connecting rod.

40. The electric operating mechanism according to claim 39, characterized in that: The push rod extends outward and is formed with a third connecting hole.

41. The electric operating mechanism according to claim 30, characterized in that: It also includes an electronic controller, the motor is connected to the electronic controller by signal, and the electronic controller transmits a signal to control the rotation of the motor.

42. The electric operating mechanism according to claim 41, characterized in that: At least two signal switches are provided around the driving member, and the switches are used to detect the moving position of the driving member and feed back the position signal to the electronic controller to control the motor to stop. The signal switch is fixed on the base or a part based on the base.

43. The electric operating mechanism according to claim 42, characterized in that: The signal switch is a micro switch, and a presser foot is arranged on the micro switch, and the presser foot is linked with a protrusion arranged on the driving member.

44. The electric operating mechanism according to claim 30, characterized in that; The electric operating mechanism is provided with an external operating member.

45. The electric operating mechanism according to claim 44, characterized in that: The external operating member is directly or indirectly movably connected to the connecting rod.

46. ​​The electric operating mechanism according to claim 30, characterized in that: The electric operating mechanism is also provided with a cover.

47. The electric operating mechanism according to claim 46, characterized in that: The cover shell is provided with a signal indicating device or a signal output device.

48. The electric operating mechanism according to claim 46, characterized in that: A power input device is arranged on the cover shell.

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