CN109920665B - Electromagnetic axis lock power switch device - Google Patents
Electromagnetic axis lock power switch device Download PDFInfo
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- CN109920665B CN109920665B CN201910310246.1A CN201910310246A CN109920665B CN 109920665 B CN109920665 B CN 109920665B CN 201910310246 A CN201910310246 A CN 201910310246A CN 109920665 B CN109920665 B CN 109920665B
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Abstract
The invention discloses an electromagnetic axis lock power switch device which comprises a first electromagnet, an armature and a contact assembly, wherein the armature is elastically connected with the first electromagnet in a sliding mode, a notch is formed in the armature, a lock catch capable of elastically swinging back and forth is arranged on the first electromagnet, when the first electromagnet is electrified, the armature drives the contact assembly to be closed, the lock catch is continuously clamped in the notch, and when an external force drives the lock catch to enable the lock catch to be separated from the notch, the armature elastically resets and the contact assembly is disconnected. The switch device enables the electromagnet not to be in a power-on state for a long time through locking the axis armature, so that the service life and the reliability of the electromagnet are improved, and meanwhile, the switch device also has the advantages of being simple in structure and saving cost.
Description
Technical Field
The invention relates to the technical field of power switches and circuit breakers, in particular to an electromagnetic axis lock power switch device.
Background
The power switch is a name of equipment for cutting off or switching on a load circuit, for cutting off a fault circuit, and having a function of switching different power supply sources in a power transmission and distribution system, and is classified by voltage class, and the power switch may be classified into a low voltage switch, a high voltage switch, an ultra high voltage switch, and the like.
The existing common low-voltage power switch mostly adopts an electromagnet to drive the electric contact to be closed or disconnected, the electric contact is driven to be in a closed state through long-time suction of the electromagnet, and in the power switch, the electromagnet in a working state is easy to generate temperature rise and other phenomena, so that the service life of the electromagnet is influenced. And when the electromagnet is in outage, hysteresis can be generated, so that the speed of the open circuit reaction is influenced, and meanwhile, the electromagnet is easy to malfunction under the influence of the conditions of power grid voltage fluctuation and the like, so that the reliability of a power switch is influenced. In order to avoid the above situation, some power switches lock their operating states through mechanical interlocking devices, but these mechanical interlocking devices are bulky, complicated in circuit and high in cost, and it is difficult to realize mass production in industrial production. As for a general low-voltage circuit breaker, it is impossible to realize the remote driving and remote monitoring functions with a simple, small, and low-cost structure.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an electromagnetic axis lock power switch device, which enables an electromagnet to be in a power-on state for a long time by locking an armature of an axis of the switch device, so that the service life and the reliability of the electromagnet are improved. Meanwhile, the switching device can be applied to a circuit breaker and used for increasing the response speed and controllability of circuit breaking, so that the function of remotely driving the switch is realized. In addition, the switch device also has the advantages of simple structure and lower cost.
In order to solve the technical problems, the invention adopts the following technical scheme.
The utility model provides an electromagnetism axle center lock power switching device, its includes first electro-magnet, armature and contact subassembly, armature elastic sliding connection has seted up the notch in first electro-magnet on this armature, be provided with the hasp that can reciprocal elastic swing on the first electro-magnet, when first electro-magnet was last, armature drive contact subassembly was closed and the hasp lasts the block in the notch, when external force drive hasp in order to make hasp and notch separation, armature elastic reset and contact subassembly disconnection.
Preferably, the external force for actuating the catch to disengage the catch from the recess is derived from manual or electromagnetic power actuation.
Preferably, the lock catch is arranged in a semicircular shape, the circle center of the lock catch is rotatably connected to the first electromagnet, a driving rod is arranged on the lock catch, a driving rod spring is arranged between the driving rod and the first electromagnet, when the lock catch is separated from the notch, the tangent plane of the lock catch is attached to the side face of the armature, and when the lock catch is clamped in the notch, one of two end points of the tangent plane of the lock catch is located in the notch.
Preferably, the locking device further comprises a locking driving mechanism, the locking driving mechanism comprises a second electromagnet and a second driving circuit which are electrically connected with each other, the magnetic end of the second electromagnet is arranged opposite to the driving rod, the driving rod is ferromagnetic, the second electromagnet is attracted with the driving rod when being powered on, and the driving rod drives the locking device to be separated from the notch.
Preferably, the automobile seat further comprises a lock catch driving mechanism, the lock catch is arranged in a wedge shape, the tip end of the lock catch is opposite to the armature, the other end of the lock catch is connected to the lock catch driving mechanism through a driving rod, a driving rod spring is sleeved on the driving rod, and the lock catch driving mechanism is used for driving the lock catch to elastically swing in a reciprocating mode.
Preferably, the first electromagnet comprises a shell and a coil, the shell is a ferromagnetic shell, the coil is arranged in the shell, the coil and the shell are arranged in a barrel shape, and the lower end part of the armature elastically slides in the barrel-shaped hollow cavity.
Preferably, the motor further comprises a first driving circuit, and the coil is electrically connected to the first driving circuit.
Preferably, an armature spring is arranged between the armature and the housing.
Preferably, the contact assembly comprises a group of electrical contacts and at least one group of arc-extinguishing contacts, an arc absorption device is connected between the arc-extinguishing contacts and the electrical contacts, when the contact assembly starts to close, the arc-extinguishing contacts are closed before the electrical contacts, and when the contact assembly starts to open, the electrical contacts are opened before the arc-extinguishing contacts.
Preferably, the contact assembly comprises a first contact, a second contact and an insulating partition plate, the first contact and the second contact are arranged oppositely, one or both of the first contact and the second contact are elastic contacts, when the contact assembly is started to be opened, the first contact and the second contact are opened, the insulating partition plate is pushed into the space between the first contact and the second contact, and when the contact assembly is started to be closed, the insulating partition plate is moved out of the space between the first contact and the second contact before the first contact and the second contact are closed.
In the electromagnetic axis lock power switch device disclosed by the invention, after the first electromagnet is electrified and under the clamping action of the lock catch, the armature drives the contact assembly to be kept in a closed state, and at the moment, the power supply to the first electromagnet can be stopped, so that the first electromagnet is prevented from being in an electrified state for a long time. When a user wants to disconnect the contact assembly, the lock catch can be driven by both manual operation and electric mechanisms, so that the lock catch is separated from the notch, and the armature is elastically reset. The invention has the advantages that the electromagnet does not need to be in a power-on state for a long time by locking the axis armature, thereby prolonging the service life and the reliability of the electromagnet, and meanwhile, the switch device also has the advantages of simple structure and lower cost.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another state of the first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of another state of the second embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 6 is a schematic structural diagram of another state of the third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a fourth embodiment of the present invention.
Fig. 8 is a schematic structural diagram of another state of the fourth embodiment of the present invention.
Fig. 9 is a schematic structural view of a contact assembly in a fifth embodiment of the invention.
Fig. 10 is a schematic structural view of another state of the contact assembly in the fifth embodiment of the present invention.
Fig. 11 is a schematic structural view of a contact assembly in a sixth embodiment of the invention.
Fig. 12 is a schematic structural view of another state of the contact assembly in the sixth embodiment of the present invention.
Fig. 13 is a schematic structural view of a contact assembly in a seventh embodiment of the invention.
Fig. 14 is a schematic structural view of another state of the contact assembly in the seventh embodiment of the present invention.
Fig. 15 is a circuit configuration diagram of an arc absorbing device in a seventh embodiment of the present invention.
Fig. 16 is a schematic structural view of a contact assembly in an eighth embodiment of the invention.
Fig. 17 is a schematic structural view of another state of the contact assembly in the eighth embodiment of the present invention.
Fig. 18 is a schematic structural view of a contact assembly in a ninth embodiment of the invention.
Fig. 19 is a structural view of another state of the contact assembly in the ninth embodiment of the invention.
Fig. 20 is a schematic view of a contact assembly in a tenth embodiment of the invention.
Fig. 21 is a schematic structural view of another state of the contact assembly in the tenth embodiment of the present invention.
Detailed Description
The invention is described in more detail below with reference to the figures and examples.
The invention discloses an electromagnetic axle lock power switch device, and the specific structure of the electromagnetic axle lock power switch device is shown in the following embodiments.
Example 1:
referring to fig. 1 and 2, the electromagnetic axis lock power switching device includes a first electromagnet 1, an armature 2 and a contact assembly 3, wherein the armature 2 is elastically slidably connected to the first electromagnet 1, a notch 4 is formed in the armature 2, a lock catch 5 capable of elastically swinging back and forth is arranged on the first electromagnet 1, when the first electromagnet 1 is powered on, the armature 2 drives the contact assembly 3 to be closed and the lock catch 5 to be continuously clamped in the notch 4, and when the lock catch 5 is driven by an external force to separate the lock catch 5 from the notch 4, the armature 2 is elastically reset and the contact assembly 3 is disconnected. Wherein the external force for driving the lock catch 5 to separate the lock catch 5 from the recess 4 is derived from manual or electromagnetic power. After the first electromagnet 1 is electrified, under the clamping action of the lock catch 5, the armature 2 drives the contact assembly 3 to be kept in a closed state, and at the moment, power supply to the first electromagnet 1 can be stopped, so that the first electromagnet 1 is prevented from being in the electrified state for a long time. When a user wants to open the contact assembly 3, the latch 5 can be driven by a manual or electromagnetic driving mechanism, so that the latch 5 is separated from the notch 4, and the armature 2 is elastically reset.
The lock catch 5 is arranged in a semicircular shape, the circle center position of the lock catch 5 is rotatably connected to the first electromagnet 1, the drive rod 50 is arranged on the lock catch 5, the drive rod spring 51 is arranged between the drive rod 50 and the first electromagnet 1, when the lock catch 5 is separated from the notch 4, the tangent plane of the lock catch 5 is attached to the side face of the armature 1, when the lock catch 5 is clamped in the notch 4, one of two end points of the tangent plane of the lock catch 5 is located in the notch 4, and the drive rod 50 and the drive rod spring 51 are used for achieving reciprocating elastic swing of the lock catch 5.
In this embodiment, the first electromagnet 1 includes a housing 11 and a coil 10, the housing 11 is a ferromagnetic housing, the coil 10 is disposed in the housing 11 and is in a barrel shape, and the lower end of the armature 2 elastically slides in the barrel-shaped hollow. The switch device further comprises a first driving circuit 12, the coil 10 is electrically connected to the first driving circuit 12, and the first driving circuit 12 is used for controlling the first electromagnet 1 to be powered on or powered off. An armature spring 7 is arranged between the upper end of the armature 2 and the housing 11, and the armature 2 is elastically slid by the armature spring 7.
Example 2:
referring to fig. 3 and 4, the difference between the present embodiment and embodiment 1 is that the electromagnetic shaft lock power switch device further includes a latch driving mechanism 6, where the latch driving mechanism 6 includes a second electromagnet 60 and a second driving circuit 61 electrically connected to each other, a magnetic end of the second electromagnet 60 is disposed opposite to the driving rod 50, the driving rod 50 is ferromagnetic, the second electromagnet 60 is attracted to the driving rod 50 when powered on, and the driving rod 50 drives the latch 5 to be separated from the notch 4, and the second driving mechanism 61 is used to control the second electromagnet 60 to be powered on or powered off, so as to further control the driving rod 50 to swing.
Example 3:
as shown in fig. 5 and fig. 6, as an alternative to embodiment 2, the electromagnetic axis lock power switching device further includes a latch driving mechanism 6, the latch 5 is disposed in a wedge shape, a tip of the latch 5 is disposed opposite to the armature 2, the other end of the latch is connected to the latch driving mechanism 6 through a driving rod 50, the driving rod 50 is sleeved with a driving rod spring 51, and the latch driving mechanism 6 is configured to drive the latch 5 to elastically swing back and forth. In practical applications, the latch driving mechanism 6 may be a solenoid valve, an electromagnet, or other power mechanism with equivalent driving capability.
Example 4:
as an alternative to embodiment 2, referring to fig. 7 and 8, this embodiment is different from embodiment 2 in that the driving rod 50 is composed of two arms movably connected to each other, one end of the driving rod 50 is sleeved with a driving rod spring 51 and then connected to the latch driving mechanism 6, the other end of the driving rod 50 is connected to the latch 5, and the latch driving mechanism 6 transmits power to the latch 5 by a lever transmission principle, so that the latch 5 can swing back and forth.
Example 5:
referring to fig. 9 and 10, the contact assembly 3 includes a set of electrical contacts and at least one set of arcing contacts, an arc absorbing device 305 is connected between the arcing contacts and the electrical contacts, when the contact assembly 3 starts to close, the arcing contacts are closed before the electrical contacts, and when the contact assembly 3 starts to open, the electrical contacts are opened before the arcing contacts. During the closing process of the contact assembly 3, since the arcing contact is closed before the electrical contact, the arc generated by the arcing contact is transmitted to the arc absorbing device 305 and absorbed by the arc absorbing device 305, so as to avoid the generation of arc when the electrical contact is closed; during the opening process of the contact assembly 3, since the electrical contact is opened before the arcing contact, the arc generated by the electrical contact is transmitted to the arc absorbing device 305 and absorbed by the arc absorbing device 305, so as to avoid the generation of the arc when the electrical contact is opened. In order to effectively improve the arc extinguishing ability, the quantity of arc extinguishing contact is the multiunit, when contact subassembly 3 was closed, multiunit arc extinguishing contact was closed in proper order, when contact subassembly 3 broke off, multiunit arc extinguishing contact broke off in proper order. Through the process, the contact assembly realizes on/off control of the contact and absorption of electric arcs in an asynchronous mode, and has the advantages of good arc extinguishing performance, simple structure and low cost.
In practical application, the contact assembly 3 includes a first contact 301 and a second contact 302 which are oppositely arranged, the arcing contact includes an arcing contact 303 and an elastic contact 304 which are oppositely arranged, the contact assembly 3 includes a contact support 300 made of a conductive material, the first contact 301 and the arcing contact 303 are both arranged on the contact support 300, and a distance between the arcing contact 303 and the elastic contact 304 is smaller than a distance between the first contact 301 and the second contact 302. The contact holder 300 is provided with a rotating shaft 307, and the contact holder 300 can rotate around the rotating shaft 307 within a preset angle. The power switch can close or open the arcing contact and the electrical contact by driving the contact holder 300 to rotate within a predetermined angle.
In this embodiment, the elastic contact 304 is disposed on an elastic sheet 306, and may also be disposed on other types of elastic members such as a spring.
Example 6:
as an alternative to embodiment 5, referring to fig. 11 and 12, this embodiment is different from embodiment 5 in that a push rod 308 is fixed on the contact support 300, and the push rod 308 is used to drive the contact support 300 to reciprocate, so that the contact support 300 drives the first contact 301 and the arcing contact 303 to close with the second contact 302 and the elastic contact 304, respectively.
Example 7:
as an alternative to embodiment 5, referring to fig. 13 and 14, this embodiment is different from embodiment 1 in that an insulating ejector 311 is further included, the electrical contact and the arcing contact are both button switches, when the insulating ejector 311 moves forward, the arcing contact and the electrical contact are sequentially closed, and when the insulating ejector 311 moves backward, the electrical contact and the arcing contact are sequentially opened.
It should be noted that the arc absorbing device 305 according to embodiments 5 to 7 may be a resistor, a capacitor, a combination of the two, or a surge absorber in practical applications. In addition, as shown in fig. 15, the arc absorbing device 305 may further include a control circuit 309, a resistor R1, and a triac D1, wherein the resistor R1 and the triac D1 are connected in series and then connected between the arcing contact and the electrical contact, and a control signal output terminal of the control circuit 309 is connected to a control terminal of the triac D1. The control circuit 309 is configured to output a control command to drive the triac D1 to be turned on or off, thereby controlling the on state of the resistor R1.
Example 8:
as shown in fig. 16 and 17, the contact assembly 3 includes a first contact 301, a second contact 302, and an insulating partition 321, the first contact 301 and the second contact 302 are disposed opposite to each other, and one or both of the first contact 301 and the second contact 302 are elastic contacts, when the contact assembly 3 is opened, the first contact 301 and the second contact 302 are opened, the insulating partition 321 is pushed in between the first contact 301 and the second contact 302, and when the contact assembly 3 is closed, the insulating partition 321 is moved out between the first contact 301 and the second contact 302 before the first contact 301 and the second contact 302 are closed.
In order to realize the effective separation of the first contact 301 and the second contact 302 and the effective cutting of the arc by the insulating partition plate 321, the first contact 301 is fixed on the first support plate 31, the second contact 302 is fixed on the second support plate 32, a contact driving block 320 is arranged between the first support plate 31 and the second support plate 32, the lower end part of the contact driving block 320 is wider than the upper end part thereof, the insulating partition plate 321 is fixed on the lower end part of the contact driving block 320, and when the upper end part of the contact driving block 320 is positioned between the first support plate 31 and the second support plate 32, the first contact 301 and the second contact 302 are closed; when the lower end portion of the contact driving block 321 supports the first support plate 31 and the second support plate 32, the first contact 301 and the second contact 302 are disconnected and the insulating partition 321 is pushed therebetween.
Example 9:
as shown in fig. 18 and 19, the present embodiment is different from embodiment 8 in that the insulating partition plate 321 is a wedge-shaped plate, and when the insulating partition plate 321 is pushed between the first contact 301 and the second contact 302, the wedge-shaped end of the insulating partition plate 321 pushes the first contact and the second contact apart.
In this embodiment, the wedge-shaped end of the insulating partition 321 is in a tip shape with an inclined surface on one side.
Example 10:
as an alternative to embodiment 9, this embodiment differs from embodiment 9 in that the wedge-shaped end of the insulating partition 321 is in a tip shape with two sides having inclined surfaces, as shown in fig. 20 and 21.
It should be noted that the above embodiments 8, 9 and 10 are only preferred embodiments of the present invention, and are not intended to limit the present invention, and in other embodiments of the present invention, the first contact 301 and the second contact 302 may also be opened or closed under the driving action of other external force, and similarly, the insulating partition plate may also be electrically driven or manually pushed in or moved out between the two contacts. Therefore, equivalents and the like made on the basis of the above description should be considered to be within the scope of the present invention.
In the electromagnetic axis lock power switching device disclosed by the invention, the axis armature is locked, so that the electromagnet does not need to be in a power-on state for a long time, the service life and the reliability of the electromagnet are improved, and meanwhile, the switching device also has the advantages of simple structure and lower cost. On the basis, the power switch also adopts an asynchronous arc extinguishing mode, so that the electric arc generated by the contact assembly 3 in the closing or opening process can be absorbed by an electric arc absorption device, and the damage of the electric arc to the contact is avoided; alternatively, the arc between the contacts is pushed or cut off by the insulating partition plate 321, so that the contacts are effectively insulated from each other. The invention has made great progress in the technical field of power switches and has better market prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the technical scope of the present invention should be included in the scope of the present invention.
Claims (6)
1. An electromagnetic axis lock power switching device comprises a first electromagnet, an armature and a contact assembly, and is characterized in that the armature is elastically and slidably connected with the first electromagnet, a notch is formed in the armature, a lock catch capable of elastically swinging back and forth is arranged on the first electromagnet, when the first electromagnet is electrified, the armature drives the contact assembly to be closed, the lock catch is continuously clamped in the notch, and when an external force drives the lock catch to separate the lock catch from the notch, the armature elastically resets and the contact assembly is disconnected;
the lock catch is arranged in a semicircular shape, the circle center position of the lock catch is rotatably connected with the first electromagnet, a driving rod is arranged on the lock catch, a driving rod spring is arranged between the driving rod and the first electromagnet, when the lock catch is separated from the notch, the tangent plane of the lock catch is attached to the side surface of the armature, and when the lock catch is clamped in the notch, one of two end points of the tangent plane of the lock catch is positioned in the notch;
the contact assembly comprises a first contact, a second contact and an insulating partition plate, wherein the first contact and the second contact are arranged oppositely, one or both of the first contact and the second contact are elastic contacts, when the contact assembly is started to be disconnected, the first contact and the second contact are disconnected, the insulating partition plate is pushed between the first contact and the second contact, and when the contact assembly is started to be closed, the insulating partition plate is moved out between the first contact and the second contact before the first contact and the second contact are closed;
the first contact is fixed on the first supporting plate, the second contact is fixed on the second supporting plate, a contact driving block is arranged between the first supporting plate and the second supporting plate, the lower end part of the contact driving block is wider than the upper end part of the contact driving block, the insulating partition plate is fixed at the lower end part of the contact driving block, and when the upper end part of the contact driving block is positioned between the first supporting plate and the second supporting plate, the first contact and the second contact are closed; when the lower end part of the contact driving block struts the first supporting plate and the second supporting plate, the first contact and the second contact are disconnected, and the insulating partition plate is pushed between the first supporting plate and the second supporting plate.
2. The electromagnetic hub lock power switching device of claim 1, wherein the external force for actuating the locking device to disengage the locking device from the recess is derived from manual or electromagnetic power actuation.
3. The electromagnetic hub lock power switching device of claim 2, further comprising a lock actuator, wherein the lock actuator comprises a second electromagnet and a second driving circuit electrically connected to each other, a magnetic end of the second electromagnet is disposed opposite to the driving rod, the driving rod is ferromagnetic, the second electromagnet is attracted to the driving rod when powered on, and the driving rod drives the lock to separate from the notch.
4. The electromagnetic lock-centered power switching device of claim 1, wherein the first electromagnet comprises a housing and a coil, the housing is a ferromagnetic housing, the coil is disposed in the housing and both are arranged in a barrel shape, and the lower end of the armature elastically slides in the hollow of the barrel shape.
5. The electromagnetic hub lock power switching device of claim 4, further comprising a first drive circuit, wherein the coil is electrically connected to the first drive circuit.
6. The electromagnetic hub lock power switch assembly of claim 4, wherein an armature spring is disposed between the armature and the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310246.1A CN109920665B (en) | 2019-04-17 | 2019-04-17 | Electromagnetic axis lock power switch device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910310246.1A CN109920665B (en) | 2019-04-17 | 2019-04-17 | Electromagnetic axis lock power switch device |
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| CN109920665A CN109920665A (en) | 2019-06-21 |
| CN109920665B true CN109920665B (en) | 2022-06-24 |
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| CN201910310246.1A Active CN109920665B (en) | 2019-04-17 | 2019-04-17 | Electromagnetic axis lock power switch device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110539888B (en) * | 2019-08-30 | 2021-07-13 | 天津航天中为数据***科技有限公司 | Automatic power-off device and method for multi-rotor unmanned aerial vehicle |
| CN114183034B (en) * | 2021-11-29 | 2024-01-30 | 江西中盾安保科技有限公司 | Multiple theftproof formula stealthy lock accuse intelligent cabinet |
| CN114300889B (en) * | 2021-12-13 | 2022-08-26 | 西安交通大学 | Household direct current plug and socket with arc extinguish chamber and operation method |
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| EP0311523A1 (en) * | 1987-10-08 | 1989-04-12 | Jaeger | Bistable commutator, particularly for controlling main and dipped headlights of a vehicle |
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| CN109920665A (en) | 2019-06-21 |
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