CN209747360U - Electrical switching device and electrical equipment - Google Patents

Abstract

the application provides an electrical switching apparatus and electrical equipment, relates to electrical switching technical field. The electrical switching apparatus includes: a first contact region, a movable electromagnetic component and at least one magnetic component; each magnetic assembly is provided with a second contact area; the movable electromagnetic assembly is provided with a third contact area; if the movable electromagnetic assembly is not electrified, the third contact area is in contact with the first contact area; if the movable electromagnetic element is energized, the third contact area is in contact with the second contact area of a magnetic element. The electrical apparatus comprises at least two contactors and the electrical switching device; one end of a contactor is electrically connected with the first contact area, and the other end of the contactor is electrically connected with one pole of a power supply; one end of each of the remaining contacts is electrically connected to one of the second contact regions, and the other end is electrically connected to the other pole of the power supply. The application can realize stable contact of at least two states, can select the quantity of contact state according to actual need, and the practicality is strong, extensive applicability.

Description

electrical switching device and electrical equipment

Technical Field

The present application relates to the field of electrical switching technology, and in particular, to an electrical switching apparatus and electrical equipment.

Background

an electrical switching apparatus is an electrical appliance in which a controlled quantity is changed in steps when a change in an input quantity meets a prescribed requirement. The system has an interactive relationship between a control system and a controlled system, and is generally applied to an automatic control circuit.

at present, a common electrical switching device is to wind a coil around an electromagnet and generate a magnetic field by energization to attract an armature with a contact end. The electromagnet is in a fixed state, when the coil is electrified, the electromagnet generates magnetic force to attract the armature to be in an electrified position, and the contact end of the armature is in contact with one terminal to be closed; when the coil is powered off, the magnetism of the electromagnet disappears, the armature returns to the power-off position, and the contact end of the armature is closed in contact with the other terminal.

The existing electromagnet is fixed, attraction and armature loosening are controlled by utilizing the power on or power off of a coil, the armature can only be switched between two positions, the contact of contact areas in two states can only be realized, and the practicability is poor.

SUMMERY OF THE UTILITY MODEL

the purpose of this application aims at providing an electrical switching device and electrical equipment, and this electrical switching device can realize the stable contact of two at least states, can select the quantity of contact state according to actual need, and the practicality is strong, extensive applicability.

In order to achieve the above object, the present application provides, in a first aspect, an electrical switching apparatus comprising:

A first contact region, a movable electromagnetic component and at least one magnetic component;

each magnetic assembly is provided with a second contact area;

The movable electromagnetic assembly is provided with a third contact area;

If the movable electromagnetic assembly is not electrified, the movable electromagnetic assembly is in a power-down position, and the third contact area is in contact with the first contact areas and is separated from each second contact area;

If the movable electromagnetic assembly is electrified, the movable electromagnetic assembly and the magnetic field of one magnetic assembly form a magnetic loop, and the movable electromagnetic assembly moves to the electrifying position, so that the third contact area is in contact with the second contact area of the other magnetic assembly.

In an alternative embodiment, the moveable electromagnetic assembly includes an electromagnet and a coil surrounding the electromagnet;

the two ends of the coil are used for being externally connected with a driving circuit, and the driving circuit is used for supplying power to the movable electromagnetic assembly and enabling the voltages at the two ends of the coil to form a voltage difference.

In an alternative embodiment, the magnetic assembly comprises a magnetizer and a permanent magnet disposed on the magnetizer;

the magnetizer is provided with an inner concave structure, and the inner concave structure is arranged towards the movable electromagnetic assembly and is concave along the direction far away from the movable electromagnetic assembly.

In an optional embodiment, the electrical switching apparatus of the first aspect of an embodiment of the present application further comprises: an elastic member and a bracket;

One end of the elastic piece is fixed on the bracket, and the other end of the elastic piece is fixed at one end of the electromagnet far away from the third contact area.

in an alternative embodiment, the third contact area is provided on top of the movable electromagnetic assembly;

The second contact region is arranged on the top of the magnetic component.

In an optional embodiment, at least the top of the third contact region has an arc-shaped convex surface;

the first contact area is positioned above the third contact area, and the bottom surface of the first contact area is provided with an arc-shaped notch attached to the arc-shaped convex surface.

in an alternative embodiment, the at least one magnetic assembly comprises a first magnetic assembly and a second magnetic assembly;

the movable electromagnetic assembly is positioned between the first magnetic assembly and the second magnetic assembly and has a preset distance with the first magnetic assembly and the second magnetic assembly;

The movable electromagnetic assembly is used for forming a magnetic loop by an induced magnetic field of the movable electromagnetic assembly and a magnetic field of the first magnetic assembly if receiving current in a first direction; if the current in the second direction is received, the induced magnetic field of the movable electromagnetic assembly and the magnetic field of the second magnetic assembly form a magnetic loop; the first direction is opposite to the second direction.

In an alternative embodiment, the first magnetic component and the second magnetic component are oppositely arranged;

the N pole orientation of the first magnetic component is opposite to the N pole orientation of the second magnetic component.

In an alternative embodiment, the at least one magnetic component comprises a first magnetic component;

The first magnetic assembly and the movable electromagnetic assembly have a predetermined spacing;

The movable electromagnetic assembly is used for forming a magnetic loop by the induced magnetic field of the movable electromagnetic assembly and the magnetic field of the first magnetic assembly if receiving current.

in a second aspect, the present application provides an electrical device comprising:

at least two contactors, a drive circuit and the electrical switching apparatus;

one end of one contactor is electrically connected with the first contact area, and the other end of the one contactor is electrically connected to one pole of the power supply;

One end of each of the remaining contactors is electrically connected to one of the second contact areas, and the other end of the remaining contactor is electrically connected to the other pole of the power supply;

The driving circuit is used for supplying power to the movable electromagnetic assembly and enabling the movable electromagnetic assembly and a magnetic field of one magnetic assembly to form a magnetic loop.

In an optional embodiment, the electrical apparatus further comprises a driving circuit for supplying power to the movable electromagnetic assembly and making the movable electromagnetic assembly and a magnetic field of one of the magnetic assemblies form a magnetic loop.

Compared with the prior art, the scheme of the application has at least the following beneficial technical effects:

The movable electromagnetic assembly of the electric switch device is a movable component and is provided with a third contact area, and if the movable electromagnetic assembly is in a lower potential position and is not electrified, the third contact area is in contact with the first contact area, so that a stable contact state is maintained. The electric switch device comprises at least one magnetic assembly, wherein if the movable electromagnetic assembly is electrified, the movable electromagnetic assembly and a magnetic field of the magnetic assembly form a magnetic loop, and the movable electromagnetic assembly moves to an electrifying position, so that the third contact area is in contact with the second contact area of the magnetic assembly, and the other stable contact state is kept.

When the movable electromagnetic assembly is in the power-down position, the third contact area and the first contact area are always in a contact closed state, and the state is stable. And, movable electromagnetic assembly and magnetic component form the mode of magnetic circuit through circular telegram, and the movable electromagnetic assembly of magnetic attraction removes for the second contact area contact of third contact area and a magnetic component, the magnetic force that adopts the mode of magnetic circuit to produce is great, and the contact is more stable, can guarantee that movable electromagnetic assembly moves accurately, makes third contact area and second contact area stable contact.

moreover, this application can set up one or two or more magnetic assembly according to actual need, through when movable electromagnetic component circular telegram, forms two kinds at least stable contact's state, and the quantity of contact zone can be adjusted according to actual need to the contact and the disconnection of control contact zone, and the practicality is strong, extensive applicability.

additional aspects and advantageous technical effects of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of an electrical switching apparatus with a movable electromagnetic assembly in a non-energized state according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of an electrical switching apparatus with a movable electromagnetic assembly in an energized state according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of an electrical switching apparatus in an unpowered state according to an embodiment of the present application.

Fig. 4 and 5 are schematic structural diagrams of an electrical switching apparatus in which two movable electromagnetic assemblies and magnetic fields of two magnetic assemblies respectively form a magnetic circuit according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a third electrical device according to an embodiment of the present application.

Reference numerals:

1-movable electromagnetic component, 101-electromagnet, 102-coil, 12-second connecting piece;

21-a first magnetic component, 22-a second magnetic component, 201-a magnetizer, 202-a permanent magnet and 11-a first connecting piece;

3-a first contact zone, 4-a second contact zone, 5-a third contact zone;

6-elastic piece, 7-bracket;

8-first contactor, 9-second contactor, 10-third contactor.

Detailed Description

reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

Referring to fig. 1, an embodiment of the present application provides an electrical switching apparatus including:

A first contact zone 3, a movable electromagnetic assembly 1 and at least one magnetic assembly;

each magnetic assembly is provided with a second contact area 4;

the movable electromagnetic assembly 1 is provided with a third contact zone 5;

if the movable electromagnetic assembly 1 is not energized, the movable electromagnetic assembly 1 is in the lower power position, and the third contact area 5 is in contact with the first contact areas 3 and is separated from each second contact area 4;

When the movable electromagnetic assembly 1 is energized, the movable electromagnetic assembly 1 forms a magnetic loop with the magnetic field of one of the magnetic assemblies, and the movable electromagnetic assembly 1 moves to the energized position, so that the third contact area 5 is in contact with the second contact area 4 of one of the magnetic assemblies.

wherein the first contact area 3, the second contact area 4 and the third contact area 5 are all made of conductive materials.

Wherein, when the movable electromagnetic component 1 is in the power-down position, the third contact area 5 and the first contact area 3 are always in a close-coupled state, and the state is stable. Moreover, the movable electromagnetic assembly 1 and the magnetic assembly form a magnetic circuit by electrifying, the movable electromagnetic assembly 1 is attracted by magnetic force to move, so that the third contact area 5 is in contact with the second contact area 4 of one magnetic assembly, the magnetic force generated by adopting the magnetic circuit mode is large, the movable electromagnetic assembly 1 can be ensured to move accurately, and the third contact area 5 is in stable contact with the second contact area 4.

This application can set up one or two or more magnetic assembly according to actual need, through when 1 circular telegram at movable electromagnetic component, forms two kinds or three kinds or more stable contact's state, and the quantity of contact zone can be adjusted according to actual need to the contact and the disconnection of control contact zone, and the practicality is strong, extensive applicability. Simultaneously, the contactor is unanimous with the relay principle, and only the current class is different, and the scheme of this application can be arranged in contactor and relay.

Alternatively, referring to fig. 2, the movable electromagnetic assembly 1 includes an electromagnet 101 and a coil 102 wound around the electromagnet 101. Two ends of the coil 102 are used for being externally connected with a driving circuit, and the driving circuit is used for supplying power to the movable electromagnetic assembly 1 and enabling voltages at two ends of the coil 102 to form a voltage difference, so that a current is formed in the coil 102. In practical applications, the electromagnet 101 is a device with an iron core inside, and can be made magnetic like a magnet by using a coil 102 to which current is applied, and is generally made into a bar shape or a horseshoe shape. The iron core needs to be easy to magnetize and can be made of soft iron or silicon steel with lost magnetism. Such an electromagnet 101 is magnetized when energized, and disappears when de-energized.

Alternatively, referring to fig. 2, the magnetic assembly includes a magnetic conductor 201 and a permanent magnet 202 provided to the magnetic conductor 201. The magnetizer 201 has a concave structure, and the concave structure is disposed toward the movable electromagnetic assembly 1 and is concave in a direction away from the movable electromagnetic assembly 1. In practice, the cross-sectional shape of the magnetizer 201 may be a U shape, an open reversed trapezoid, an arc shape, or a broken line shape; a U-shaped, open inverted trapezoidal, circular arc or dog-leg shaped opening, facing the movable electromagnetic assembly 1.

Optionally, the electrical switching apparatus further comprises: the elastic member 6 and the bracket 7; one end of the elastic part 6 is fixed on the bracket 7, the other end of the elastic part 6 is fixed at one end of the electromagnet 101 far away from the third contact area 5, and the elastic part 6 can be used for supporting the electromagnet 101 and moving along with the electromagnet 101, and after the magnetic force disappears, the electromagnet 101 is driven to return.

Alternatively, as shown in fig. 2 and 3, the elastic member 6 may be a spring, and the support 7 may be an insulating housing, the upper portion of which is fixed on the inner wall of the insulating housing, and the top surface of which is exposed out of the housing and flush with the top of the housing. The electromagnet 101 is in a long strip shape, and two ends of the electromagnet 101 are flush with the top surface and the bottom surface of the magnetic assembly respectively. An interval exists between the lower end of the electromagnet 101 and the bottom surface of the shell, the elastic piece 6 can be placed, one end of the elastic piece 6 is connected with the lower end of the electromagnet 101, and the other end of the elastic piece is connected with the bottom surface of the shell.

alternatively, as shown in fig. 2 and 3, the third contact area 5 is provided on top of the movable electromagnetic assembly 1; the second contact region 4 is provided on top of the magnetic assembly. Alternatively, the second contact zone 4 is fixed to the top of the magnetic assembly by means of a first vertically arranged link 11, the first link 11 being arranged close to the side of the magnetic assembly facing the movable electromagnetic assembly 1. The third contact area 5 is fixed to the top of the movable magnet assembly 1 by a second vertically arranged link 12.

Alternatively, as shown in fig. 2 and 3, at least the top of the third contact region 5 has an arc-shaped convex surface; the first contact area 3 is located above the third contact area 5, and the bottom surface of the first contact area 3 is provided with an arc-shaped notch attached to the arc-shaped convex surface. As an embodiment, the second contact region 4 may have a hemispherical shape, and the third contact region 5 may have a spherical or cylindrical shape. The third contact area 5 and the first contact area 3 replace point contact through surface contact, so that the problems that normally closed contacts are always closed and contact inclination between the contacts easily occurs due to continuous stress of the two contacts, and then contact resistance changes due to changes of contact areas, and the use of reliability of the electrical switching device is influenced are solved.

Example one

referring to fig. 1 and 2, an embodiment of an electrical switching apparatus is provided in which at least one magnetic assembly includes a first magnetic assembly 21. The first magnetic assembly 21 includes a magnetic conductor 201 and a permanent magnet 202 provided to the magnetic conductor 201. The permanent magnet 202 is located in the middle of the magnetizer 201. In practice, permanent magnet 202 may be located in the middle of magnetic conductor 201, or may be located elsewhere on magnetic conductor 201, such as at the ends. The cross section of the magnetizer 201 can be in a U shape, an open inverted trapezoid shape, an arc shape, a broken line shape or other concave shapes; a U-shaped, open inverted trapezoidal, circular arc or dog-leg shaped opening, facing the movable electromagnetic assembly 1.

in practice, the U-shaped iron core with the embedded permanent magnet 202 can be selected as the magnetic component, the permanent magnet 202 can be made of Ru Fe B permanent magnet material, the material is high in magnetic energy product, high in residual magnetism, high in coercive force and high in cost performance, the designed size is small, and the material is suitable for being used in relays or contactors.

Alternatively, the first magnetic assembly 21 and the movable electromagnetic assembly 1 have a predetermined spacing, leaving a spacing for the movable electromagnetic assembly 1 to move.

The movable electromagnetic assembly 1 is configured to form a magnetic loop by the induced magnetic field of the movable electromagnetic assembly 1 and the magnetic field of the first magnetic assembly 21 when receiving a current.

Referring to fig. 1, the movable electromagnetic assembly 1 is in an unenergized state, the first contact region 3 and the third contact region 5 are in a contact state, the elastic member 6 is held in a vertical state, and the terminal C and the terminal E are closed.

Referring to fig. 2, when the movable electromagnetic assembly 1 is in the energized state, the magnetic field induced by the movable electromagnetic assembly 1 and the magnetic field of the first magnetic assembly 21 form a magnetic loop, the movable electromagnetic assembly 1 approaches the first magnetic assembly 21 by the magnetic force of the first magnetic assembly 21, one end of the elastic element 6 moves along with the movable electromagnetic assembly 1, and is elastically bent, and the terminal B and the terminal E are closed.

In the present embodiment, the first connecting member 11 and the second connecting member 12 are made of conductive materials. The first contact zone 3 is electrically connected to the terminal C, the first connection element 11 is electrically connected to the terminal B and the second connection element 12 is electrically connected to the terminal E, so that a loop is formed when the two contact zones are in contact.

The two end points of the coil 102 are a1 and a2, a1 and a2 are used for being electrically connected with a driving circuit, the driving circuit applies different voltages to the two ends of the coil 102, so that the movable electromagnetic assembly 1 forms an induced current, the electromagnet 101 generates magnetism, the direction of the magnetic flux of the movable electromagnetic assembly 1 is the same as the direction of the magnetic flux of the first magnetic assembly 21, a magnetic circuit is formed, the movable electromagnetic assembly 1 moves towards the first magnetic assembly 21, and the second contact area 4 is in contact with the third contact area 5.

This embodiment can realize two kinds of stable contact's states, and the contact and the disconnection of control contact zone, electric switching device can regard as the relay to use, can connect two contactors, realizes the switching between two contactors.

Example two

referring to fig. 3, 4 and 5, the second embodiment differs from the first embodiment in that: the at least one magnetic assembly includes a first magnetic assembly 21 and a second magnetic assembly 22.

Each of the first magnetic assembly 21 and the second magnetic assembly 22 includes a magnetic conductor 201 and a permanent magnet 202 provided to the magnetic conductor 201. The permanent magnets 202 are all located in the middle of the magnetizer 201.

The movable electromagnetic assembly 1 is located between the first magnetic assembly 21 and the second magnetic assembly 22, and has a predetermined distance from each of the first magnetic assembly 21 and the second magnetic assembly 22.

the movable electromagnetic assembly 1 is used for forming a magnetic loop by an induced magnetic field of the movable electromagnetic assembly 1 and a magnetic field of the first magnetic assembly 21 when receiving current in a first direction; if the current in the second direction is received, the induced magnetic field of the movable electromagnetic assembly 1 and the magnetic field of the second magnetic assembly 22 form a magnetic loop; the first direction is opposite to the second direction.

alternatively, as shown in fig. 3, 4 and 5, the first magnetic assembly 21 and the second magnetic assembly 22 are oppositely disposed; the N-pole orientation of the first magnetic assembly 21 is opposite to the N-pole orientation of the second magnetic assembly 22, so that when the movable electromagnetic assembly 1 generates a current with a first direction opposite to a second direction, magnetic circuits can be formed with the first magnetic assembly 21 and the second magnetic assembly 22, respectively, so that the movable electromagnetic assembly 1 moves towards the first magnetic assembly 21 or the second magnetic assembly 22. The directions of the magnetic fluxes formed in fig. 4 and 5 are opposite.

Alternatively, the first magnetic assembly 21 and the second magnetic assembly 22 both use U-shaped iron cores, the permanent magnets 202 both have attraction forces to the electromagnet 101, and the movable electromagnetic assembly 1 is located at the center of the first magnetic assembly 21 and the second magnetic assembly 22, and the attraction forces are the same and can be cancelled. The N-pole of the permanent magnet 202 of the first magnetic assembly 21 faces downward, and the N-pole of the permanent magnet 202 of the second magnetic assembly 22 faces upward.

referring to fig. 3, the movable electromagnetic assembly 1 is in an unenergized state, the first contact region 3 and the third contact region 5 are in a contact state, and the terminal C and the terminal E are closed.

Referring to fig. 4, when the movable electromagnetic assembly 1 is in the energized state, the magnetic field induced by the movable electromagnetic assembly 1 and the magnetic field of the second magnetic assembly 22 form a magnetic loop, and the movable electromagnetic assembly 1 approaches the second magnetic assembly 22 under the magnetic force of the second magnetic assembly 22; one end of the elastic member 6 is elastically bent as the movable solenoid assembly 1 moves.

When a high voltage is applied to the terminal A2 and a low voltage is applied to the terminal A1, the current direction is from A2 to A1, which defines the current direction at this time as the current in the second direction, and vice versa as the current in the first direction. At a current in the second direction, the direction of the magnetic flux generated by the electromagnet 101 is the direction according to the right hand rule, from top to bottom, as seen in the direction of the arrow shown by the dashed line in fig. 4. At this time, the magnetic flux direction of the electromagnet 101 is the same as that of the left second magnetic assembly 22, and the electromagnet 101 approaches the second magnetic assembly 22 under the force generated by the magnetic flux, and at this time, the third contact area 5 contacts the left second contact area 4, and the terminal D and the terminal E are closed.

Referring to fig. 5, when the movable electromagnetic assembly 1 is in the energized state, the induced magnetic field of the movable electromagnetic assembly 1 and the magnetic field of the first magnetic assembly 21 form a magnetic loop, and the movable electromagnetic assembly 1 approaches the first magnetic assembly 21 under the magnetic force of the first magnetic assembly 21; one end of the elastic member 6 is elastically bent as the movable solenoid assembly 1 moves.

When a low voltage is applied to the terminal A2 and a high voltage is applied to the terminal A1, the current direction is from A1 to A2, and the current direction is the current in the first direction. The direction of the magnetic flux generated by the electromagnet 101 at the time of the current in the first direction is the direction according to the right-hand rule, from bottom to top, as shown by the arrow shown by the broken line in fig. 5. At this time, the magnetic flux direction of the electromagnet 101 is the same as the magnetic flux direction of the right first magnetic assembly 21, and the electromagnet 101 approaches the iron core of the first magnetic assembly 21 under the action force generated by the magnetic flux, and at this time, the third contact area 5 contacts with the right second contact area 4, and the terminal B and the terminal E are closed.

In this embodiment, the first magnetic assembly 21 and the second magnetic assembly 22 are both provided with a first connecting piece 11, and the first connecting piece 11 on the first magnetic assembly 21 is electrically connected with the terminal B; the first connector 11 of the second magnetic assembly 22 is electrically connected to the terminal D.

this embodiment can realize three kinds of stable contact's state, but increases the stable contact's of the same way state on the basis of embodiment one, can connect three contactor, realizes the switching between the three contactor. Meanwhile, the first contact area 3 and the third contact area 5 are in a normally closed contact disconnection state, are not connected with the contactor, can realize contact of the contacts in two states, avoid damage to contact resistance of the contacts, and avoid the contact points of the connecting contactor to be always in a contact state. Meanwhile, positive and negative currents are conducted through the group of coils 102, stable contact of the contacts on the two sides in the loop is achieved, and the contact is more stable than the contact without the loop formed in the two contact states in the prior art.

An embodiment of the present application further provides an electrical device, including:

At least two contactors, a drive circuit and the electrical switching apparatus;

One end of one contactor is electrically connected to the first contact area 3, and the other end of one contactor is electrically connected to one pole of the power supply;

one end of each of the remaining contactors is electrically connected to one of the second contact areas 4, and the other end of the remaining contactor is electrically connected to the other pole of the power supply.

the driving circuit is used for supplying power to the movable electromagnetic assembly 1 and enabling the movable electromagnetic assembly 1 and a magnetic field of one magnetic assembly to form a magnetic loop.

EXAMPLE III

referring to fig. 6, an embodiment of an electrical apparatus is provided, a dashed box is an electrical switching apparatus, and referring to fig. 3 to 5, when the electrical switching apparatus includes a first magnetic component 21 and a second magnetic component 22, on the basis of the second embodiment, one end of a first contactor 8 is electrically connected to a terminal C, one end of a second contactor 9 is electrically connected to a terminal D, and one end of a third contactor 10 is electrically connected to a terminal B. The other ends of the first contactor 8, the second contactor 9 and the third contactor 10 are electrically connected to a power supply positive electrode F1. The power negative electrode F2 is electrically connected to the terminal E.

The electrical device in this embodiment can control the interlock control between the three contactors at the same time.

Referring to fig. 3 and 6, if no voltage is applied to the terminals a2 and a1, the movable electromagnetic assembly 1 is not energized, the first contact area 3 is in contact with the third contact area 5, the terminal C is closed, the terminal E is closed, the circuit of the first contactor 8 is connected, and the contacts of the first contactor 8 act accordingly to control the corresponding load, such as a motor, a fan and/or a lamp.

referring to fig. 4 and 6, when a voltage is applied to the terminals a2 and a1, a high voltage is applied to the terminal a2, a low voltage is applied to the terminal a1, the movable electromagnetic assembly 1 is powered on, the current direction is from a2 to a1, the third contact area 5 is contacted with the second contact area 4, the terminal D and the terminal E are closed, the circuit of the second contactor 9 is communicated, and the contact of the second contactor 9 acts correspondingly to control the corresponding load, such as a motor, a fan and/or a lamp.

referring to fig. 5 and 6, if a voltage is applied to the terminals a2 and a1, a low voltage is applied to the terminal a2, a high voltage is applied to the terminal a1, the movable electromagnetic assembly 1 is powered on, the current direction is from a1 to a2, the third contact area 5 is in contact with the second contact area 4, the terminal B is closed with the terminal E, the circuit of the third contactor 10 is connected, and the contacts controlled by the third contactor 10 act accordingly to control the corresponding load, such as a motor, a fan and/or an electric lamp.

unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

it will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. An electrical switching apparatus, comprising:

A movable electromagnetic component (1), a first contact zone (3) and at least one magnetic component;

Each magnetic assembly is provided with a second contact zone (4);

The movable electromagnetic assembly (1) is provided with a third contact zone (5);

If the movable electromagnetic assembly (1) is not energized, the movable electromagnetic assembly (1) is in a lower electrical position, the third contact zone (5) being in contact with the first contact zone (3) and being separated from each of the second contact zones (4);

If the movable electromagnetic assembly (1) is electrified, the movable electromagnetic assembly (1) and the magnetic field of one magnetic assembly form a magnetic loop, and the movable electromagnetic assembly (1) moves to the electrifying position, so that the third contact area (5) is in contact with the second contact area (4) of one magnetic assembly.

2. An electrical switching apparatus according to claim 1 wherein the moveable electromagnetic assembly (1) comprises an electromagnet (101) and a coil (102) surrounding the electromagnet (101);

two ends of the coil (102) are used for being externally connected with a driving circuit, and the driving circuit is used for supplying power to the movable electromagnetic assembly (1) and enabling voltages at two ends of the coil (102) to form a voltage difference.

3. An electrical switching apparatus according to claim 2, wherein said magnetic assembly comprises a magnetic conductor (201) and a permanent magnet (202) provided to said magnetic conductor (201);

The magnetizer (201) is provided with an inwards concave structure, the inwards concave structure faces the movable electromagnetic assembly (1) and is concave along the direction far away from the movable electromagnetic assembly (1).

4. The electrical switching apparatus of claim 2 further comprising: an elastic member (6) and a bracket (7);

one end of the elastic piece (6) is fixed on the support (7), and the other end of the elastic piece (6) is fixed at one end, far away from the third contact area (5), of the electromagnet (101).

5. Electrical switching device according to claim 1, wherein the third contact area (5) is provided on top of the movable electromagnetic assembly (1);

The second contact region (4) is arranged on the top of the magnetic component.

6. Electrical switching device according to claim 2, wherein the third contact area (5) has an arc-shaped convex surface at least at the top;

The first contact area (3) is positioned above the third contact area (5), and the bottom surface of the first contact area (3) is provided with an arc-shaped notch attached to the arc-shaped convex surface.

7. electrical switching apparatus according to any of claims 1-6, wherein the at least one magnetic assembly comprises a first magnetic assembly (21) and a second magnetic assembly (22);

the movable electromagnetic assembly (1) is positioned between the first magnetic assembly (21) and the second magnetic assembly (22) and has a predetermined distance from the first magnetic assembly (21) and the second magnetic assembly (22);

the movable electromagnetic assembly (1) is used for forming a magnetic loop by an induced magnetic field of the movable electromagnetic assembly (1) and a magnetic field of the first magnetic assembly (21) if receiving current in a first direction; if the current in the second direction is received, the induction magnetic field of the movable electromagnetic assembly (1) and the magnetic field of the second magnetic assembly (22) form a magnetic loop; the first direction is opposite to the second direction.

8. Electrical switching device according to claim 7, wherein the first magnetic assembly (21) and the second magnetic assembly (22) are oppositely arranged;

The N pole orientation of the first magnetic component (21) is opposite to the N pole orientation of the second magnetic component (22).

9. Electrical switching apparatus according to any of claims 1-6, wherein said at least one magnetic assembly comprises a first magnetic assembly (21);

The first magnetic assembly (21) and the movable electromagnetic assembly (1) have a predetermined spacing;

the movable electromagnetic assembly (1) is used for enabling an induced magnetic field of the movable electromagnetic assembly (1) and a magnetic field of the first magnetic assembly (21) to form a magnetic loop if the movable electromagnetic assembly (1) receives current.

10. an electrical device, comprising:

at least two contactors, a drive circuit and an electrical switching apparatus according to any one of claims 1-9;

one end of one contactor is electrically connected with the first contact area (3), and the other end of the one contactor is electrically connected with one pole of a power supply;

One end of each of the remaining contactors is electrically connected with one second contact area (4), and the other end of the remaining contactor is electrically connected to the other pole of the power supply;

the driving circuit is used for supplying power to the movable electromagnetic assembly (1) and enabling the movable electromagnetic assembly (1) and the magnetic field of one magnetic assembly to form a magnetic loop.