Single-coil bistable electromagnetic operating mechanism and power socket comprising same

Abstract

The utility model provides a single-coil bistable electromagnetic operating mechanism and a power socket comprising the same, and belongs to the technical field of power sockets, the single-coil bistable electromagnetic operating mechanism comprises an upper permanent magnet, a lower permanent magnet, a movable iron core, an electromagnetic coil, a main static contact and a main static contact, the main static contact is connected with the movable iron core through a support plate, and the movable iron core is connected with the electromagnetic coil. The movable iron core is arranged between the upper permanent magnet and the lower permanent magnet, the movable iron core movably penetrates through the electromagnetic coil, the positive pole output end of the rectification power supply is connected with the first static contact, the negative pole output end of the rectification power supply is connected with the second static contact, and the positive pole output end of the rectification power supply is connected with the second static contact. A contact assembly used for connecting the first static contact or the second static contact is arranged between the first static contact and the second static contact; the contact assembly is connected with the movable iron core through an insulating connecting plate; according to the utility model, stable and reliable tripping and closing states of the contact can be realized, and the device is simple, reliable, fast in response speed, better in controllability and high in efficiency.

Description

Technical Field

[0001] The utility model relates to a single-coil bistable electromagnetic operating mechanism and a power socket comprising the same, belonging to the technical field of power sockets. Background Art

[0002] The traditional operating mechanism is mainly composed of several parts such as connecting rods, locks and energy supply systems. It can only accept automatic tripping control power outage commands and must be manually reset to close the switch to supply power. It is a monostable / single-coil permanent magnet operating mechanism with poor controllability.

[0003] At the same time, traditional operating mechanisms have many links, so the cumulative motion tolerance is large, the response speed is slow, the controllability is poor, and the efficiency is low. The response time is generally tens of milliseconds.

[0004] The above problems are issues that should be considered and resolved during the design and production of the single-coil bistable electromagnetic operating mechanism. Utility Model Content

[0005] The utility model aims to provide a single-coil bistable electromagnetic operating mechanism and a power socket comprising the same to solve the problems of slow response speed, poor controllability and low efficiency existing in the prior art.

[0006] The technical solution of the utility model is:

[0007] A single-coil bistable electromagnetic operating mechanism comprises an upper permanent magnet, a lower permanent magnet, a moving iron core, an electromagnetic coil, a main static contact and an active contact, wherein the active contact is connected to the moving iron core through a support plate, the moving iron core is arranged between the upper permanent magnet and the lower permanent magnet, the moving iron core moves through the electromagnetic coil, and further comprises a rectifier power supply, a first static contact, a second static contact, an insulating connecting plate and a contact assembly, wherein the positive output end of the rectifier power supply is connected to the first static contact, the negative output end of the rectifier power supply is connected to the second static contact, a contact assembly for connecting the first static contact or the second static contact is arranged between the first static contact and the second static contact, and the contact assembly is connected to the moving iron core through the insulating connecting plate;

[0008] The contact assembly includes a contact frame, an upper moving contact and a lower moving contact. The upper moving contact and the lower moving contact are respectively provided at both ends of the contact frame. An access screw is provided in the middle of the contact frame. The positive output end of the rectifier power supply is respectively connected to the input end of the electromagnetic coil and the second switch device through the first switch device. The output end of the electromagnetic coil is connected to the access screw of the contact frame. The second switch device is connected to the negative output end of the rectifier power supply.

[0009] Furthermore, the contact frame adopts a U-shaped metal contact frame.

[0010] Furthermore, the positive output terminal of the rectifier power supply is connected to the negative output terminal of the rectifier power supply through the capacitor C.

[0011] Furthermore, both the first switch device and the second switch device are thyristors, and controllable ends of the thyristors are respectively connected to output ends of the controller.

[0012] Furthermore, the first switch device, the second switch device and the controller are all arranged on a circuit board.

[0013] Furthermore, the upper permanent magnet is arranged on the panel, and the lower permanent magnet is arranged on the bottom box.

[0014] A power socket comprises a base box, a panel, an electromagnetic operating mechanism, a socket and a mounting plate, wherein the panel is provided with a wiring hole, the base box and the panel jointly form a chamber, wherein the mounting plate, the socket and the electromagnetic operating mechanism are provided in the chamber, the socket and the electromagnetic operating mechanism are respectively arranged on the mounting plate, the electromagnetic operating mechanism adopts the single-coil bistable electromagnetic operating mechanism described in any one of the above items, and the socket is connected to the main static contact of the electromagnetic operating mechanism.

[0015] The beneficial effects of the utility model are as follows: the single-coil bistable electromagnetic operating mechanism and the power socket containing the same can realize the state that one pair of contacts are separated while the other pair of contacts are closed by setting the contact assembly, pushing the two moving contacts of the contact frame to close one after another, respectively realizing the positive and negative excitation currents in the same electromagnetic coil and the movement of the iron core surrounding it, and relying on a single rectifier power supply and a single electromagnetic coil to realize the stable and reliable tripping and closing states of the contacts, which is simple and reliable, has a fast response speed, better controllability and high efficiency. It can further realize a bistable single-coil permanent magnetic operating mechanism that can accept automatic tripping power failure instructions to trip and can accept automatic closing instructions to close and supply power. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a single-coil bistable electromagnetic operating mechanism and a power socket including the same according to an embodiment of the utility model;

[0017] Figure 2 1 is a schematic diagram of an equivalent circuit of a single-coil bistable electromagnetic operating mechanism of an embodiment;

[0018] Among them: 1-upper permanent magnet, 2-lower permanent magnet, 3-moving iron core, 4-electromagnetic coil, 5-main static contact, 6-active contact, 7-support plate, 8-rectifier power supply, 9-first static contact, 10-second static contact, 11-insulating connecting plate, 12-contact frame, 13-upper moving contact, 14-lower moving contact, 15-access screws, 16-first switching device, 17-second switching device, 18-controller, 19-bottom box, 20-panel, 21-mounting plate, 22-circuit board. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary persons in the field without creative work should fall within the scope of protection of the utility model.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] The utility model is described in detail with reference to the schematic diagram. When describing the embodiments of the utility model, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the utility model. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In this utility model, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] like Figure 1A single-coil bistable electromagnetic operating mechanism comprises an upper permanent magnet 1, a lower permanent magnet 2, a moving iron core 3, an electromagnetic coil 4, a main static contact 5 and an active contact 6, wherein the active contact 6 is connected to the moving iron core 3 through a support plate 7, the moving iron core 3 is arranged between the upper permanent magnet 1 and the lower permanent magnet 2, and the moving iron core 3 moves through the electromagnetic coil 4, and further comprises a rectifier power supply 8, a first static contact 9, a second static contact 10, an insulating connecting plate 11 and a contact assembly, wherein the positive output end of the rectifier power supply 8 is connected to the first static contact 9, and the negative output end of the rectifier power supply 8 is connected to the second static contact 10, and a contact assembly for connecting the first static contact 9 or the second static contact 10 is arranged between the first static contact 9 and the second static contact 10, and the contact assembly is connected to the moving iron core 3 through the insulating connecting plate 11;

[0026] The contact assembly includes a contact frame 12, an upper moving contact 13 and a lower moving contact 14. The upper moving contact 13 and the lower moving contact 14 are respectively provided at both ends of the contact frame 12. An access screw 15 is provided in the middle of the contact frame 12. The positive output end of the rectifier power supply 8 is respectively connected to the input end of the electromagnetic coil 4 and the second switch device 17 through the first switch device 16. The output end of the electromagnetic coil 4 is connected to the access screw 15 of the contact frame 12, and the second switch device 17 is connected to the negative output end of the rectifier power supply 8.

[0027] This single-coil bistable electromagnetic operating mechanism, by setting a contact assembly, can achieve a state in which one pair of contacts are separated while another pair of contacts are closed, pushing the two moving contacts of the contact frame 12 to close one after another, respectively achieving the positive and negative excitation currents in the same electromagnetic coil 4 and the movement of the iron core surrounding it, and relying on a single rectifier power supply 8 and a single electromagnetic coil 4 to achieve stable and reliable tripping and closing states of the contacts, which is simple and reliable, has a fast response speed, better controllability and high efficiency. Further, it can realize a bistable single-coil permanent magnetic operating mechanism that can accept an automatic tripping power failure command to trip and can accept an automatic closing command to close and supply power.

[0028] In this single-coil bistable electromagnetic operating mechanism, the contact frame 12 is a U-shaped metal contact frame 12 . A moving contact is installed on each of the upper and lower surfaces of the contact frame 12, namely an upper moving contact 13 and a lower moving contact 14. Therefore, when the main contact on the moving contact mounting frame makes a separation or closing movement, the upper moving contact 13 and the lower moving contact 14 on the contact frame 12 also realize the movement in the upper and lower opposite directions respectively, and the single electromagnetic coil 4 is turned on from two opposite directions respectively, so that two electromagnetic coil 4 excitation currents in opposite directions can be generated in the single electromagnetic coil 4 respectively, so as to achieve the purpose of alternately closing or separating the circuit with the first static contact 9 and the second static contact 10 installed on the upper moving contact 13 and the lower moving contact 14 respectively, that is, one pair of contacts is separated and the other pair of contacts is closed. Therefore, the same electromagnetic coil 4 can obtain excitation currents in two different directions of positive and negative directions and the iron core movement in different directions around it, ensuring that only one moving contact mounting frame and a pair of main contacts are required to close the main circuit to connect the external power supply and to separate the main circuit to disconnect the external power supply, with a simple structure and reliable functions.

[0029] The first switch device 16 and the second switch device 17 are both thyristors. The controllable ends of the thyristors are respectively connected to the output ends of the controller 18. The first switch device 16, the second switch device 17, and the controller 18 are all arranged on the circuit board 22. The controller 18 realizes the on-off control of the first switch device 16 and the second switch device 17, and then realizes that the electromagnetic coil 4 is separately connected to the circuit from the positive and negative directions, so that the moving iron core 3 in the electromagnetic coil 4 realizes movement in two different directions, realizes the electromagnetic actuation function of the single coil, drives the moving iron core 3 surrounded by the electromagnetic coil 4 to move back and forth, and pushes the active contact 6 connected to the moving iron core 3 to complete the tripping and power-off or closing and power-on action of separating from the main static contact 5, and realizes the power supply or power-off of the electrical equipment in the connected user local area network.

[0030] This single-coil bistable electromagnetic operating mechanism is completely different from the traditional operating mechanism structure. It is no longer composed of a connecting rod, a lock and an energy supply system, but is composed of a rectifier power supply 8, a first switch device 16, a second switch device 17, an electromechanical energy conversion (electromagnet) and a contact assembly. Although they are two operating mechanisms with different structures, their contact separation and closure are still the same mechanical actions. However, since the electronic operation relies on power electronic devices to control the power source, it can ensure that the time accuracy of its execution instructions reaches the microsecond level, ensuring that the response time is controllable and can act at the desired phase. This is the premise for realizing the true meaning of intelligent switching. The operating mechanism was originally the actuator of the high-voltage switch electrical appliance and the core component of the intelligent electrical appliance to complete the execution function. It is particularly important for high-voltage circuit breakers. It must not only ensure long-term operation reliability, but also meet the requirements of arc extinguishing characteristics.

[0031] The implementation process of this single-coil bistable electromagnetic operating mechanism is described as follows: when the first switch device 16 is controlled to be turned on and the second switch device 17 is turned off, the rectifier power supply 8, the first switch device 16, the electromagnetic coil 4, the contact frame 12, and the upper moving contact 13 form a loop, and the electromagnetic coil 4 is energized to move the moving iron core 3 toward the lower permanent magnet 2 and then contact it, driving the contact frame 12 to move, so that the upper moving contact 13 is separated from the first static contact 9, and the lower moving contact 14 is in contact with the second static contact 10. At the same time, the moving iron core 3 drives the active contact 6 to separate from the main static contact 5, thereby realizing tripping and power outage. When the first switch device 16 is controlled to be disconnected and the second switch device 17 is turned on, the rectifier power supply 8, the lower moving contact 14, the contact frame 12, the electromagnetic coil 4, and the second switch device 17 form a loop. The electromagnetic coil 4 is energized to move the moving iron core 3 toward the upper permanent magnet 1 and then make contact, thereby driving the contact frame 12 to move, so that the lower moving contact 14 is separated from the second static contact 10, and the upper moving contact 13 is in contact with the first static contact 9. At the same time, the moving iron core 3 drives the active contact 6 to contact with the main static contact 5, thereby realizing reset and closing.

[0032] The embodiment further provides a power socket, comprising a base box 19, a panel 20, an electromagnetic operating mechanism, a socket and a mounting plate 21, wherein the panel 20 is provided with a wiring hole, the base box 19 and the panel 20 together form a chamber, wherein the mounting plate 21, the socket and the electromagnetic operating mechanism are provided in the chamber, the socket and the electromagnetic operating mechanism are respectively arranged on the mounting plate 21, the electromagnetic operating mechanism adopts the single-coil bistable electromagnetic operating mechanism described in any one of the above items, and the socket is connected to the main static contact 5 of the electromagnetic operating mechanism.

[0033] For this type of power socket, after the external power cord is connected to the wiring hole of the panel 20, the active contact 6, the main static contact 5 and the contact assembly are all turned on, and one of the two moving contacts, the upper moving contact 13 and the lower moving contact 14 on the contact frame 12, must be connected to the rectifier power supply 8 to achieve circuit connection, while the other is not connected. The fact that one of the upper moving contact 13 and the lower moving contact 14 is connected to the circuit means that the current of the electromagnetic coil 4 is turned on, and the moving iron core 3 in the electromagnetic coil 4 must move in a specific direction. Once it moves, the previously conducted current of the electromagnetic coil 4 also ends, and the moving iron core 3 stops moving and is kept stationary until another movement in the opposite direction occurs, and the current of the electromagnetic coil 4 in the opposite direction conducted by the other moving contact of the upper moving contact 13 and the lower moving contact 14 is also discharged again, and the moving iron core 3 in the electromagnetic coil 4 returns to its initial position. Therefore, the structural feature of the utility model is that only a single electromagnetic coil 4 is needed to realize two different processes of switching on and off the current, and at the same time, the structure is compact and can be arranged in an extremely limited and narrow space.

[0034] like Figure 2The electronic operating mechanism is installed on the surface of the mounting plate 21. The rectifier power supply 8 outputs direct current to the electromagnetic coil 4, and controls the iron core installed in the electromagnetic coil 4 to produce forward or backward movement. Therefore, the main static contact 5 and the active contact 6 can be mechanically separated and closed to achieve the purpose of tripping and power off or closing and power supply. Its structure includes an electromagnet composed of the lower permanent magnet 2, the upper permanent magnet 1, the electromagnetic coil 4 and the moving iron core 3 surrounded by it, and a rectifier power supply 8. Under the action of the upper moving contact 13 and the lower moving contact 14 respectively installed on the upper and lower surfaces of the contact frame 12, currents in two different directions of positive and negative are realized, and the first switch device 16 or the second switch device 17 is turned on respectively, thereby realizing two currents in opposite directions in the same electromagnetic coil 4, so that the two ends of the moving iron core 3 surrounded by the electromagnetic coil 4 generate opposite magnetism respectively, and can be attracted or repelled by the upper permanent magnet 1 or the lower permanent magnet 2 in an instant, and the dynamic and static main contacts are separated or closed at high speed within 3ms to 5ms. At the same time, the upper moving contact 13 and the lower moving contact 14 also synchronously realize the closing or disconnection of the first stationary contact 9 and the second stationary contact 10 that have a matching relationship therewith, thereby realizing the bistable control of the circuit that can be connected or disconnected by a single electromagnetic coil 4, and realizing the effect of high-speed switching action of the moving and static contacts at the same time in the narrow space of the wall power socket.

[0035] When electricity passes through the electromagnetic coil 4, an electromagnetic field is generated, and north and south poles are formed at the two ends of the moving iron core 3 surrounded by the coil, and then attraction and repulsion are respectively generated on the upper permanent magnet 1 and the lower permanent magnet 2 facing the two ends of the moving iron core 3. The direction of the resultant force is consistent, which accelerates the movement of the moving iron core 3 until the moving iron core 3 contacts or separates from the surface of the upper permanent magnet 1 and the lower permanent magnet 2 installed on the panel 20 or the base. At this time, the active contact 6 fixed on the moving iron core 3 is separated from or closed by the main static contact 5 connected to the external power supply.

[0036] The rectifier power supply 8 includes a bridge rectifier power supply 8 and a capacitor, which can instantly generate a very large discharge current in the coil, generate an extremely strong magnetic field, and drive the permanent magnet core to move at high speed, ensuring that the moving and static contacts have an extremely fast contact engagement or separation speed. Experiments have shown that the moving and static contacts have achieved an unprecedented engagement or separation record of less than 3 milliseconds in the history of power system operation, so the real-time action of the moving and static contacts can be ensured, which is essential for the safe and energy-saving operation of the power grid.

[0037] This single-coil bistable electromagnetic operating mechanism and the power socket containing the same can realize the separation or closure of the moving and static contacts when tripping to cut off power or closing to energize, and can achieve the control function of tripping and closing. The wall power socket of the utility model is intelligent and does not require user participation. Therefore, it can achieve the effect of automatic adjustment throughout the process during environmental changes that the user is not aware of. It is suitable for use on the walls of homes and similar places, such as offices, meetings, studies, workshops, entertainment, restaurants and the like.

[0038] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A single-coil bistable electromagnetic operating mechanism, comprising an upper permanent magnet, a lower permanent magnet, a moving iron core, an electromagnetic coil, a main static contact and an active contact, wherein the active contact is connected to the moving iron core through a support plate, the moving iron core is arranged between the upper permanent magnet and the lower permanent magnet, and the moving iron core moves through the electromagnetic coil, characterized in that: It also includes a rectifier power supply, a first static contact, a second static contact, an insulating connecting plate and a contact assembly, wherein the positive output terminal of the rectifier power supply is connected to the first static contact, the negative output terminal of the rectifier power supply is connected to the second static contact, a contact assembly for connecting the first static contact or the second static contact is provided between the first static contact and the second static contact, and the contact assembly is connected to the moving iron core through the insulating connecting plate; The contact assembly includes a contact frame, an upper moving contact and a lower moving contact. The upper moving contact and the lower moving contact are respectively provided at both ends of the contact frame. An access screw is provided in the middle of the contact frame. The positive output end of the rectifier power supply is respectively connected to the input end of the electromagnetic coil and the second switch device through the first switch device. The output end of the electromagnetic coil is connected to the access screw of the contact frame. The second switch device is connected to the negative output end of the rectifier power supply.

2. The single-coil bistable electromagnetic operating mechanism according to claim 1, characterized in that: The contact frame adopts a U-shaped metal contact frame.

3. The single-coil bistable electromagnetic operating mechanism according to claim 1, characterized in that: The first switch device and the second switch device both adopt thyristors, and the controllable ends of the thyristors are respectively connected to the output ends of the controller.

4. The single-coil bistable electromagnetic operating mechanism according to claim 3, characterized in that: The first switch device, the second switch device and the controller are all arranged on a circuit board.

5. The single-coil bistable electromagnetic operating mechanism according to any one of claims 1 to 4, characterized in that: The upper permanent magnet is arranged on the panel, and the lower permanent magnet is arranged on the bottom box.

6. A power socket, comprising a base box, a panel, an electromagnetic operating mechanism, a socket and a mounting plate, the panel being provided with a wiring hole, the base box and the panel forming a chamber together, the chamber being provided with a mounting plate, a socket and an electromagnetic operating mechanism, the socket and the electromagnetic operating mechanism being provided on the mounting plate respectively, characterized in that: The electromagnetic operating mechanism adopts the single-coil bistable electromagnetic operating mechanism described in any one of claims 1 to 5, and the socket is connected to the main static contact of the electromagnetic operating mechanism.

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