High-voltage and high-current magnetic latching vacuum relay

Abstract

The present invention discloses a high-voltage and high-current magnetic-holding vacuum relay, which includes a housing. A first electromagnetic component and a second electromagnetic component are arranged inside the housing. A magnetic moving contact component is movably arranged between the first electromagnetic component and the second electromagnetic component. The moving contact component includes a moving contact. When current passes through the first electromagnetic component and the second electromagnetic component, magnetic fields in opposite directions are generated. The first electromagnetic component is provided with a fixed contact. The present invention can carry high voltage and high current. By arranging the first electromagnetic component and the second electromagnetic component, it can control the quick contact or separation between the moving contact and the fixed contact, avoid the arc generated due to the excessive time of maintaining a small gap between the moving contact and the fixed contact, and extend the service life of the relay.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and particularly to a high-voltage and high-current magnetic latching vacuum relay. Background Art

[0002] An electromagnetic relay generally consists of an electromagnet, an armature, a spring piece, contacts, etc. The electromagnetic relay can achieve remote control and automatic control. As long as a certain voltage is applied across the coil ends, a certain current will flow through the coil, thereby generating an electromagnetic effect. The armature will be attracted by the electromagnetic force and overcome the pulling force of the return spring to be attracted to the iron core, thus driving the moving contact of the armature to contact the fixed contact (normally open contact). When the coil is powered off, the electromagnetic attraction also disappears, and the armature will return to its original position under the reaction force of the spring, separating the moving contact from the original fixed contact (normally closed contact). In this way, by making contact and separation, the purpose of conducting and cutting off the circuit is achieved.

[0003] The existing electromagnetic relay generates magnetism and the disappearance of magnetism under the conditions of power-on and power-off through the electromagnet, and through the magnetic attraction with the armature with contacts, it achieves the function of controlling the circuit switch. Usually, the current in the electromagnet circuit is disconnected to separate the electromagnet and the armature. When high voltage and high current pass through the relay, when the moving contact and the fixed contact are in contact or separated, the gap is extremely small, and almost all the circuit voltage is applied between the contacts, forming a very strong electric field. Free electrons on the cathode escape and rush towards the anode, becoming strong-field emission. The electrons move at high speed and collide with neutral gas molecules, causing them to ionize. After ionization, the positive ions move towards the cathode, hitting the cathode surface and increasing its temperature, thereby forming thermionic emission and participating in collision ionization again. Therefore, a large number of charged particles will be formed between the electrodes, making the gas conductive and forming a hot electron flow, that is, an arc. The generation of an arc inside the relay will burn the contacts, reducing the service life of the relay or even making it unable to be used normally. Summary of the Invention

[0004] Aiming at the deficiencies and defects of the prior art, a high-voltage and high-current magnetic latching vacuum relay is provided, which can carry high voltage and high current. By setting a first electromagnetic component and a second electromagnetic component, it can control the rapid contact or separation between the moving contact and the fixed contact, avoid the time when the gap between the moving contact and the fixed contact is small from being too long and generating an arc, and extend the service life of the relay.

[0005] To achieve the above object, the present invention provides the following technical solutions.

[0006] High-voltage and high-current magnetic-holding vacuum relay, comprising a housing, wherein a first electromagnetic component and a second electromagnetic component are arranged inside the housing, a magnetic moving contact component is movably arranged between the first electromagnetic component and the second electromagnetic component, the moving contact component comprises a moving contact, when there is current passing through the first electromagnetic component and the second electromagnetic component, magnetic fields in opposite directions are generated, the first electromagnetic component is provided with a fixed contact, when there is current passing through the first electromagnetic component and the second electromagnetic component, the moving contact component moves to the first electromagnetic component and makes the moving contact contact with the fixed contact or the moving contact component moves to the second electromagnetic component and makes the moving contact separate from the fixed contact, when the current directions passing through the first electromagnetic component and the second electromagnetic component are changed, the moving contact component moves to the second electromagnetic component and makes the moving contact separate from the fixed contact or the moving contact component moves to the first electromagnetic component and makes the moving contact contact with the fixed contact.

[0007] The beneficial effects of the present invention are as follows: By arranging the first electromagnetic component and the second electromagnetic component, when there is current passing through the first electromagnetic component and the second electromagnetic component, the first electromagnetic component and the second electromagnetic component generate magnetic fields in opposite directions, so that the magnetic field direction generated by one of the electromagnetic components is the same as the magnetic field direction of the moving contact component, thereby generating a repulsive force on the moving contact component, and the magnetic field direction generated by the other electromagnetic component is opposite to the magnetic field direction of the moving contact component, thereby generating an attractive force on the moving contact component. Since the moving contact component is movably located between the first electromagnetic component and the second electromagnetic component, the repulsive force and the attractive force generated by the two magnetic fields act on the moving contact component in the same direction, so that the moving contact component can move quickly, and the moving contact quickly contacts or separates from the fixed contact. When it is necessary to change the contact state between the moving contact and the fixed contact, by changing the current directions passing through the first electromagnetic component and the second electromagnetic component, the magnetic fields generated by the first electromagnetic component and the second electromagnetic component are both changed, so that the magnetic field direction generated by one of the electromagnetic components changes from being the same as the magnetic field direction of the moving contact component to being opposite to the magnetic field direction of the moving contact component, thereby changing the acting force on the moving contact component from a repulsive force to an attractive force, and the magnetic field direction generated by the other electromagnetic component changes from being opposite to the magnetic field direction of the moving contact component to being the same as the magnetic field direction of the moving contact component, thereby changing the acting force on the moving contact component from an attractive force to a repulsive force. The acting forces of the two magnetic fields on the moving contact component are opposite to the original acting forces, so that the moving direction of the moving contact component changes, and the moving contact and the fixed contact change from contact or separation to separation or contact. By generating acting forces on the moving contact component simultaneously by the magnetic fields generated by the two electromagnetic components, the moving contact and the fixed contact can contact or separate quickly, avoiding the arc generated by the too long time of maintaining the small gap between the moving contact and the fixed contact, and prolonging the service life of the relay.

[0008] As an improvement of the present invention, the moving contact assembly further includes a first mounting seat, a second mounting seat, a first magnet and a second magnet. The first mounting seat and the second mounting seat are in plug-in fit. The moving contact is located between the first mounting seat and the second mounting seat. The first magnet is installed in the first mounting seat, and the second magnet is installed in the second mounting seat. Through the above improvement, the moving contact assembly has magnetism.

[0009] As an improvement of the present invention, a first insulating gasket is provided between the moving contact and the first mounting seat, and a second insulating gasket is provided between the moving contact and the second mounting seat. Through the above improvement, insulation treatment is performed between the moving contact and the first mounting seat and the second mounting seat.

[0010] As an improvement of the present invention, the moving contact includes a base body and a contact point provided on the base body. The base body is annular, and a plurality of mounting arms extend outward from the outer periphery of the base body. The contact point is provided on the mounting arms.

[0011] As an improvement of the present invention, a first connection seat and a second connection seat are further provided in the housing. The first electromagnetic component is provided in the first connection seat, the second electromagnetic component is provided in the second connection seat, the fixed contact is provided on the first connection seat, and the moving contact is movably provided between the first connection seat and the second connection seat. Through the above improvement, the assembly of the entire relay is facilitated.

[0012] As an improvement of the present invention, a positioning post is provided on the fixed contact, a positioning hole matching with the positioning post is provided on the first connection seat, and the positioning post passes through the positioning hole and is connected with a wiring board. Through the above improvement, the positioning and installation of the fixed contact and the connection between the fixed contact and the wiring board are facilitated.

[0013] As an improvement of the present invention, the second connection seat extends circumferentially in the direction of the first connection seat to have a plurality of protrusions, and a guiding groove matching with the mounting arms is formed between adjacent two protrusions. Through the above improvement, the movement of the moving contact is made more stable.

[0014] As an improvement of the present invention, the first electromagnetic component includes a first wire coil, the first wire coil includes a first coil bobbin and a first coil wound around the first coil bobbin, the second electromagnetic component includes a second wire coil, and the second wire coil includes a second coil bobbin and a second coil wound around the second coil bobbin. Through the above improvement, when an electric current passes through the first coil, the first coil generates a magnetic field. When the direction of the electric current changes, the direction of the magnetic field generated by the first coil changes. When an electric current passes through the second coil, the second coil generates a magnetic field. When the direction of the electric current changes, the direction of the magnetic field generated by the second coil changes.

[0015] As an improvement of the present invention, the first electromagnetic component further includes a first permanent magnet, which is disposed within a first coil bobbin, and the second electromagnetic component further includes a second permanent magnet, which is disposed within a second coil bobbin. Through the above improvement, the first electromagnetic component and the second electromagnetic component can always have a magnetic field.

[0016] As an improvement of the present invention, the first electromagnetic component further includes a first yoke, which is sleeved outside the first wire coil, and the second electromagnetic component further includes a second yoke, which is sleeved outside the second wire coil. By providing the first yoke and the second yoke, magnetic diffusion can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 is a schematic diagram of the present invention after removing the housing.

[0019] Figure 3 is in the present invention Figure 2 cross-sectional view.

[0020] Figure 4 is of the present invention Figure 2 schematic diagram after removing the first connecting seat and the second connecting seat.

[0021] Figure 5 is a schematic diagram of the moving contact structure of the present invention.

[0022] Figure 6 is a schematic diagram of the first electromagnetic component structure of the present invention.

[0023] Figure 7 is a schematic diagram of the second electromagnetic component structure of the present invention.

[0024] Figure 8 is a schematic diagram of the first connecting seat structure of the present invention.

[0025] Figure 9 is a schematic diagram of the second connecting seat structure of the present invention.

[0026] In the figure, 1 is the housing; 2 is the moving contact; 2.1 is the base body; 2.2 is the mounting arm; 2.3 is the contact point; 3 is the fixed contact; 3.1 is the positioning post; 4 is the first electromagnetic assembly; 4.1 is the first wire coil; 4.2 is the first magnet; 4.3 is the first yoke; 5 is the second electromagnetic assembly; 5.1 is the second wire coil; 5.2 is the second magnet; 5.3 is the second yoke; 6 is the first mounting seat; 7 is the second mounting seat; 8 is the first magnet; 9 is the second magnet; 10 is the first insulating gasket; 11 is the second insulating gasket; 12 is the first connecting seat; 12.1 is the positioning hole; 13 is the second connecting seat; 13.1 is the protrusion; 13.2 is the guiding groove; 14 is the wiring board. Detailed implementation manners

[0027] The present invention will be further explained with reference to the accompanying drawings.

[0028] See Figures 1 to 9 The high-voltage and high-current magnetic-holding vacuum relay shown in the figure includes a housing 1. The housing 1 has a mounting cavity. A first electromagnetic assembly 4 and a second electromagnetic assembly 5 are arranged in the housing 1. A moving contact assembly with magnetism is arranged between the first electromagnetic assembly 4 and the second electromagnetic assembly 5. The moving contact 2 is movably arranged between the first electromagnetic assembly 4 and the second electromagnetic assembly 5. The first electromagnetic assembly 4 includes a first wire coil 4.1. The first wire coil 4.1 includes a first coil bobbin and a first coil wound around the first coil bobbin. The second electromagnetic assembly 5 includes a second wire coil 5.1. The second wire coil 5.1 includes a second coil bobbin and a second coil wound around the second coil bobbin. In this embodiment, the winding direction of the first coil is opposite to that of the second coil, so that when the same current passes through the first coil and the second coil, the first coil and the second coil generate magnetic fields in opposite directions. In addition, in another embodiment, the winding direction of the first coil can also be the same as that of the second coil, and currents in opposite directions are respectively passed through the first coil and the second coil. At this time, the first coil and the second coil can also generate magnetic fields in opposite directions.

[0029] The moving contact assembly includes a moving contact 2, a first mounting seat 6, a second mounting seat 7, a first magnet 8 and a second magnet 9. The moving contact 2 includes a base body 2.1 and a contact point 2.3 provided on the base body 2.1. The base body 2.1 is annular. A plurality of mounting arms 2.2 extend outward from the outer periphery of the base body 2.1. The plurality of mounting arms 2.2 are distributed along the circumference of the outer periphery of the base body 2.1. The contact point 2.3 is provided on the mounting arm 2.2. The first connecting seat 12 and the second connecting seat 13 are connected by plug-in fit. The base body 2.1 of the moving contact 2 is arranged between the first connecting seat 12 and the second connecting seat 13. The first magnet 8 is installed in the first mounting seat 6, and the second magnet 9 is installed in the second mounting seat 7. Both the first magnet 8 and the second magnet 9 are permanent magnets made of an alnico alloy material. Through the first magnet 8 and the second magnet 9, the moving contact assembly has magnetism.

[0030] A first insulating gasket 10 is provided between the moving contact 2 and the first mounting seat 6 to insulate the moving contact 2 and the first mounting seat 6. A second insulating gasket 11 is provided between the moving contact 2 and the second mounting seat 7 to insulate the moving contact 2 and the second mounting seat 7. Since the circuit is turned on after the moving contact 2 contacts the fixed contact 3, through insulation treatment, it is possible to prevent the circuit from being transmitted to other components of the relay and avoid electric leakage.

[0031] The first electromagnetic assembly 4 is provided with a fixed contact 3. The fixed contact 3 is correspondingly annular. The fixed contact 3 is connected with a wiring board 14, and the wiring board 14 is used for connecting with circuit wires. By providing a plurality of mounting arms 2.2 and a plurality of contact points 2.3 on each mounting arm 2.2, the contact area between the moving contact 2 and the fixed contact 3 is large, and it can carry high voltage and large current.

[0032] When there is current passing through the first coil in the first electromagnetic component 4 and the second coil in the second electromagnetic component 5, the first coil in the first electromagnetic component 4 and the second coil in the second electromagnetic component 5 generate magnetic fields in opposite directions. If at this time the magnetic field direction generated by the first coil is the same as the magnetic field direction of the moving contact component, and the magnetic field direction generated by the second coil is opposite, then the magnetic field generated by the first coil generates a repulsive force on the moving contact component, and the magnetic field generated by the second coil generates an attractive force on the moving contact component, causing the moving contact component to move in the direction of the second electromagnetic component 5, so that the moving contact 2 is separated from the fixed contact 3; if at this time the magnetic field direction generated by the first coil is opposite to the magnetic field direction of the moving contact component, and the magnetic field direction generated by the second coil is the same as the magnetic field direction of the moving contact component, then the magnetic field generated by the first coil generates an attractive force on the moving contact component, and the magnetic field generated by the second coil generates a repulsive force on the moving contact component, causing the moving contact component to move in the direction of the first electromagnetic component 4, so that the moving contact 2 contacts the fixed contact 3. Since the moving contact component is located between the first electromagnetic component 4 and the second electromagnetic component 5, the repulsive force and the attractive force generated by the two magnetic fields act on the moving contact component in the same direction, so that the moving contact 2 can quickly contact or separate from the fixed contact 3.

[0033] When it is necessary to change the contact state between the moving contact 2 and the fixed contact 3, by changing the current directions passing through the first electromagnetic component 4 and the second electromagnetic component 5, the magnetic fields generated by the first electromagnetic component 4 and the second electromagnetic component 5 are both changed, so that the magnetic field direction generated by one of the electromagnetic components changes from being the same as the magnetic field direction of the moving contact component to being opposite to the magnetic field direction of the moving contact component, thereby changing the acting force on the moving contact component from a repulsive force to an attractive force. The magnetic field direction generated by the other electromagnetic component changes from being opposite to the magnetic field direction of the moving contact component to being the same as the magnetic field direction of the moving contact component, thereby changing the acting force on the moving contact component from an attractive force to a repulsive force. The acting forces of the two magnetic fields on the moving contact component are opposite to the original acting forces, causing the moving direction of the moving contact component to change, and the moving contact 2 and the fixed contact 3 change from contact or separation to separation or contact. By simultaneously generating acting forces on the moving contact component by the magnetic fields of the two electromagnetic components, the moving contact 2 and the fixed contact 3 can quickly contact or separate, avoiding the arc generated due to the excessive time of maintaining a small gap between the moving contact 2 and the fixed contact 3, prolonging the service life of the relay. The relay can carry high voltage and large current, and by switching the current, the on-off between the moving contact 2 and the fixed contact can be quickly switched.

[0034] As an improvement of the present invention, the first electromagnetic assembly 4 further includes a first magnet 4.2, the first magnet 4.2 is disposed within the first coil bobbin, the second electromagnetic assembly 5 further includes a second magnet 5.2, the second magnet 5.2 is disposed within the second coil bobbin. Both the first magnet 4.2 and the second magnet 5.2 are made of an alnico alloy material. Both the first magnet 4.2 and the second magnet 5.2 have a certain magnetic field. Moreover, when the first coil is energized, the first magnet 4.2 will be magnetized, making the magnetic field direction of the first magnet 4.2 the same as that of the first electromagnetic assembly 4. When the second coil is energized, the second magnet 5.2 will be magnetized, making the magnetic field direction of the second magnet 5.2 the same as that of the second electromagnetic assembly 5. As a result, both the first magnet 4.2 and the second magnet 5.2 can generate an attractive force on the moving contact 2. However, the magnitudes of the attractive forces generated by the first magnet 4.2 and the second magnet 5.2 on the moving contact 2 cannot drive the movement of the moving contact assembly. Only when the moving contact assembly moves to the position of the first electromagnetic assembly 4 or the second electromagnetic assembly 5 due to the magnetic fields of the first coil and the second coil, the moving contact assembly can be adsorbed by the first magnet 4.2 or the second magnet 5.2. Specifically, when the moving contact assembly moves to the first electromagnetic assembly 4 due to the magnetic fields of the first coil and the second coil, the first electromagnetic assembly 4 and the second electromagnetic assembly 5 are powered off. Due to the presence of the first magnet 4.2 and the second magnet 5.2, the first magnet 4.2 generates an attractive force on the moving contact assembly, and the second magnet 5.2 generates a repulsive force on the moving contact assembly. The moving contact assembly can be adsorbed by the first magnet 4.2, enabling the moving contact assembly to maintain the state when powered off, and the moving contact 2 is in contact with the fixed contact 3. When the moving contact assembly moves to the second electromagnetic assembly 5 due to the magnetic fields of the first coil and the second coil, the first electromagnetic assembly 4 and the second electromagnetic assembly 5 are powered off. Due to the presence of the first magnet 4.2 and the second magnet 5.2, the first magnet 4.2 generates a repulsive force on the moving contact assembly, and the second magnet 5.2 generates an attractive force on the moving contact assembly. The moving contact assembly can be adsorbed by the second magnet 5.2, enabling the moving contact assembly to maintain the state when powered off, and the moving contact 2 is separated from the fixed contact 3. By providing the first magnet 4.2 and the second magnet 5.2, the moving contact 2 can still maintain the state when the first electromagnetic assembly 4 and the second electromagnetic assembly 5 are powered off with respect to the fixed contact 3.

[0035] The first electromagnetic component 4 further includes a first yoke 4.3, and the first yoke 4.3 is sleeved outside the first coil package 4.1. By providing the first yoke 4.3, the magnetic field generated by the first coil can be prevented from spreading, so that the magnetic field generated by the first coil can be concentrated, and the effect on the moving contact 2 is better. The second electromagnetic component 5 further includes a second yoke 5.3, and the second yoke 5.3 is sleeved outside the second coil package 5.1. By providing the second yoke 5.3, the magnetic field generated by the second coil can be prevented from spreading, so that the magnetic field generated by the second coil can be concentrated, and the effect on the moving contact 2 is better. The first coil package 4.1 is fixed in the first yoke 4.3 by glue, and the second coil package 5.1 is fixed in the second yoke 5.3 by glue. When the first coil and the second coil are energized to generate a magnetic field, by fixing the first coil package 4.1 and the second coil package 5.1, relative movement between the first coil package 4.1 and the second coil package 5.1 can be avoided.

[0036] The first yoke 4.3 is provided with a first guiding hole for cooperating with the first mounting seat 6, and the second yoke 5.3 is provided with a second guiding hole for cooperating with the second mounting seat 7. A part of the first mounting seat 6 extends into the first guiding hole, and a part of the second mounting seat 7 extends into the second guiding hole. When the moving contact assembly reciprocates between the first electromagnetic component 4 and the second electromagnetic component 5, the first guiding hole guides the first mounting seat 6, and the second guiding hole guides the second mounting seat 7, so that the moving contact assembly moves more stably, is not prone to deviation, and ensures the contact and separation between the moving contact 2 and the fixed contact 3.

[0037] As an improvement of the present invention, a first connecting seat 12 and a second connecting seat 13 are further provided in the housing 1. The first electromagnetic component 4 is arranged in the first connecting seat 12, the second electromagnetic component 5 is arranged in the second connecting seat 13, the fixed contact 3 is arranged on the first connecting seat 12, and the moving contact 2 is arranged between the first connecting seat 12 and the second connecting seat 13. Thereby, the assembly of the entire relay is facilitated.

[0038] The fixed contact 3 is provided with a positioning post 3.1. The first connecting seat 12 is provided with a positioning hole 12.1 that cooperates with the positioning post 3.1. The positioning post 3.1 passes through the positioning hole 12.1 and is connected to a wiring board 14. By inserting the positioning post 3.1 into the positioning hole 12.1, the fixed contact 3 can be stably arranged on the first connecting seat 12, facilitating the positioning and installation of the fixed contact 3 and the connection between the fixed contact 3 and the wiring board 14. The second connecting seat 13 extends towards the first connecting seat 12 with a plurality of protrusions 13.1. The plurality of protrusions 13.1 are circumferentially distributed along the end of the second connecting seat 13. A guiding groove 13.2 that cooperates with the mounting arm 2.2 is formed between two adjacent protrusions 13.1. When the moving contact 2 reciprocates under the action of a magnetic field, it drives the mounting arm 2.2 to move in the guiding groove 13.2. Through the guiding and limiting of the mounting arm 2.2 by the guiding groove 13.2, the movement of the moving contact 2 is more stable and not prone to deviation.

[0039] In addition, after the relay is assembled, the inside of the housing 1 is evacuated and sealed. In this embodiment, after the parts inside the housing 1 are assembled, the inside of the housing 1 is evacuated, and the opening of the housing 1 is sealed with glue, so that the inside of the housing 1 is in a vacuum environment, which can prevent oxidation from occurring when the moving contact and the fixed contact are in contact, extend the service life of the relay, and also reduce electrical losses.

[0040] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features, and principles described in the scope of this invention patent application are included in the scope of this invention patent application.

Claims

1. High-voltage and high-current magnetic-holding vacuum relay, including a housing (1), characterized in that: A first electromagnetic component (4) and a second electromagnetic component (5) are provided inside the housing (1). A magnetic moving contact component is movably arranged between the first electromagnetic component (4) and the second electromagnetic component (5). The moving contact component includes a moving contact (2). When there is current passing through the first electromagnetic component (4) and the second electromagnetic component (5), magnetic fields in opposite directions are generated. The first electromagnetic component (4) is provided with a fixed contact (3). When there is current passing through the first electromagnetic component (4) and the second electromagnetic component (5), the moving contact component moves to the position of the first electromagnetic component (4) and makes the moving contact (2) contact the fixed contact (3), or the moving contact component moves to the position of the second electromagnetic component (5) and makes the moving contact (2) separate from the fixed contact (3). When the direction of the current passing through the first electromagnetic component (4) and the second electromagnetic component (5) changes, the moving contact component moves to the position of the second electromagnetic component (5) and makes the moving contact (2) separate from the fixed contact (3), or the moving contact component moves to the position of the first electromagnetic component (4) and makes the moving contact (2) contact the fixed contact (3); A first connection seat (12) and a second connection seat (13) are further provided inside the housing (1). The first electromagnetic component (4) is arranged inside the first connection seat (12), the second electromagnetic component (5) is arranged inside the second connection seat (13), the fixed contact (3) is arranged on the first connection seat (12), and the moving contact (2) is movably arranged between the first connection seat (12) and the second connection seat (13); The moving contact (2) includes a base body (2.1) and a contact point (2.3) arranged on the base body (2.1). The base body (2.1) is annular, a plurality of mounting arms (2.2) extend outward from the outer periphery of the base body (2.1), and the contact point (2.3) is arranged on the mounting arms (2.2); The fixed contact (3) is provided with a positioning post (3.1). The first connection seat (12) is provided with a positioning hole (12.1) that cooperates with the positioning post (3.1). The positioning post (3.1) passes through the positioning hole (12.1) and is connected to a wiring board (14); By inserting the positioning post (3.1) into the positioning hole (12.1), it is convenient for the positioning and installation of the fixed contact (3) and the connection between the fixed contact (3) and the wiring board (14). The second connection seat (13) extends circumferentially in the direction of the first connection seat (12) to form a plurality of protrusions (13.1). A guiding groove (13.2) that cooperates with the mounting arms (2.2) is formed between two adjacent protrusions (13.1); When the moving contact (2) reciprocally moves under the action of the magnetic field, it drives the mounting arms (2.2) to move in the guiding groove (13.2).

2. The high-voltage and high-current magnetic-holding vacuum relay according to claim 1, wherein: The moving contact component further includes a first mounting seat (6), a second mounting seat (7), a first magnet (8) and a second magnet (9). The first mounting seat (6) and the second mounting seat (7) are in plug-in fit. The moving contact (2) is located between the first mounting seat (6) and the second mounting seat (7). The first magnet (8) is installed in the first mounting seat (6), and the second magnet (9) is installed in the second mounting seat (7).

3. The high-voltage and high-current magnetic-holding vacuum relay according to claim 2, characterized in that: A first insulating gasket (10) is provided between the moving contact (2) and the first mounting seat (6), and a second insulating gasket (11) is provided between the moving contact (2) and the second mounting seat (7).

4. The high-voltage and high-current magnetic-holding vacuum relay according to claim 1, wherein: The first electromagnetic component (4) includes a first wire coil (4.1). The first wire coil (4.1) includes a first coil bobbin and a first coil wound around the first coil bobbin. The second electromagnetic component (5) includes a second wire coil (5.1). The second wire coil (5.1) includes a second coil bobbin and a second coil wound around the second coil bobbin.

5. The high-voltage and high-current magnetic-holding vacuum relay according to claim 1, wherein: The first electromagnetic component (4) further includes a first permanent magnet (4.2). The first permanent magnet (4.2) is arranged in the first coil bobbin. The second electromagnetic component (5) further includes a second permanent magnet (5.2). The second permanent magnet (5.2) is arranged in the second coil bobbin.

6. The high-voltage and high-current magnetic-holding vacuum relay according to claim 5, wherein: The first electromagnetic component (4) further includes a first yoke (4.3). The first yoke (4.3) is sleeved outside the first wire coil (4.1). The second electromagnetic component (5) further includes a second yoke (5.3). The second yoke (5.3) is sleeved outside the second wire coil (5.1).

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