High-voltage relay with arc extinguishing capability

Abstract

The invention provides a high-voltage relay with an arc extinguishing capability. The high-voltage relay comprises a driving assembly and a static contact plate, a plurality of signal wiring columns and working wiring columns are installed on the static contact plate, the working wiring columns extend into the bottom of the static contact plate and are connected with static contacts installed at the bottom of the static contact plate, the signal wiring columns and the working wiring columns are correspondingly connected, and a movable contact piece is arranged at the upper end of the driving assembly. The movable contact piece is driven by a coil installed at the bottom of the driving assembly, the static contact plate is installed at the top of the driving assembly, and the static contact is arranged on the motion trail of the movable contact piece. And the static contact and the movable contact piece are respectively arranged at the top and the bottom of the arc extinguishing cover. According to the invention, through the arc extinguishing chamber vertically installed on the driving assembly, the movable contact piece and the static contact end are respectively located in the upper end and the lower end of the arc extinguishing chamber, thereby facilitating the installation of the arc extinguishing chamber, and preventing electric arc from being conducted with other metal parts.

Description

Technical Field

[0001] The invention relates to a high-voltage relay with arc extinguishing capability. Background Art

[0002] The contact form of the JV200 series high-voltage relay is two normally open main contacts with one normally open auxiliary contact; the contact load is 380V AC / 20A for the main contact resistance and 28VDC / 1A for the auxiliary contact resistance; the main functions are: during the operation of the product, the two main contacts are connected with load and disconnected without load, the auxiliary contacts are connected and disconnected with load, and the connection and disconnection of the main contacts are monitored by the connection and disconnection of the auxiliary contacts. In addition, the main contact withstand voltage of the invention can reach 2100V, which can be widely used in various high-voltage environments, and its cost is not much different from that of ordinary relays, and it is highly economical. For example, the opposing arc isolation cover of the CN205542494U high-voltage DC relay is installed on the moving spring piece through the bayonet isolation cover on the isolation cover, and when the moving and static contacts are in contact, the upper edge of the arc isolation portion is located above the joint surface of the moving and static contacts, and the lower edge of the arc isolation portion is in contact with the upper edge of the moving spring piece. When the moving and static contacts are in contact, the upper edge of the arc isolation portion is located above the joint surface of the moving and static contacts, but its opening method makes it inconvenient to install the static contact, which is not conducive to installation and maintenance. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a high-voltage relay with arc extinguishing capability.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a high-voltage relay with arc extinguishing capability, comprising a driving component and a static contact plate; a plurality of signal wiring housings and working terminals are installed on the static contact plate, the working terminals extend into the bottom of the static contact plate and are connected to the static contacts installed at the bottom of the static contact plate, the plurality of signal wiring housings and the working terminals are respectively connected correspondingly, a moving contact piece is provided at the upper end of the driving component, the moving contact piece is driven by a coil installed at the bottom of the driving component, the static contact plate is installed at the top of the driving component, and the static contact is placed on the motion trajectory of the moving contact piece; the static contact and the moving contact piece are respectively placed at the top and bottom of the arc extinguishing cover.

[0006] The coil is installed at the bottom of the driving component, and a magnetic strip is installed at one end of the coil, and a magnetic steel is arranged outside the magnetic strip. The moving contact piece is installed on a support plate, and the support plate is hinged to the top of the driving component through a rotating shaft, and the bottom of the support plate is fixed to the middle of the armature; one end of the armature is placed between the magnetic steel and the magnetic strip, and a spring is arranged above the other end, and the spring is fixed on the driving component housing, and the arc extinguishing cover is arranged above the spring.

[0007] There is a certain distance between the magnetic steel and the magnetic conductive strip, and the tops are bent in the same direction, and one end of the armature is placed between the two bends.

[0008] Four signal wiring terminals and four working wiring terminals are respectively installed on the stationary touch plate, and the four signal wiring terminals and the four working wiring terminals are respectively placed at two ends of the stationary touch plate.

[0009] The static touch plate is also provided with a cover plate, which is provided with a terminal through hole A and a terminal through hole B for respectively passing the signal terminal and the working terminal, and a partition is also provided on the cover plate to separate the four working terminals.

[0010] The partition is a cross partition placed between four and three.

[0011] A rubber pad is also provided between the cover plate and the static touch plate.

[0012] The beneficial effect of the present invention is that the moving contact piece and the stationary contact end are respectively located in the upper and lower ends of the arc extinguishing hood by vertically installing the arc extinguishing hood on the driving assembly, which facilitates the installation of the arc extinguishing hood and prevents the arc from being connected to other metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the driving component of the present invention;

[0015] Figure 3 It is a schematic diagram of the top view of the driving assembly of the present invention;

[0016] Figure 4 It is a schematic diagram of the structure of the static touch plate of the present invention;

[0017] Figure 5 It is a schematic diagram of the cover plate structure of the present invention;

[0018] Figure 6 It is a schematic diagram of the structure of the rubber pad of the present invention;

[0019] In the figure: 1-housing, 11-coil, 111-magnet, 112-magnetic strip, 12-armature, 13-additional pole, 14-support plate, 15-arc extinguishing cover, 16-moving contact piece, 17-spring, 18-static contact extension slot, 2-signal wiring housing, 3-working terminal, 4-partition, 5-cover plate, 6-static contact plate, 7-rubber pad, 8-terminal through hole A, 9-terminal through hole B. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0021] A high-voltage relay with arc extinguishing capability comprises a driving component and a static contact plate 6; the static contact plate 6 is provided with a plurality of signal wiring terminals 2 and working terminals 3, the working terminals 3 extend into the bottom of the static contact plate 6 and are connected to the static contacts installed at the bottom of the static contact plate 6, the plurality of signal wiring terminals 2 and the working terminals 3 are respectively connected correspondingly, a moving contact piece 16 is provided at the upper end of the driving component, the moving contact piece 16 is driven by a coil 11 installed at the bottom of the driving component, the static contact plate 6 is installed at the top of the driving component, and the static contacts are placed on the movement trajectory of the moving contact piece 16; the static contacts and the moving contact piece 16 are respectively placed at the top and bottom of an arc extinguishing cover 15, which is an arc extinguishing device of the product, when an arc is generated at the contact end when the product is turned on and off, the arc isolating cover isolates the generated arc from the rest of the metal inside the product to prevent the arc from being conducted with other metal parts, and the arc isolating cover is made of polyethersulfone, an insulating material resistant to arc ablation, which helps to extinguish the arc.

[0022] like Figure 2 As shown, the coil 11 is installed at the bottom of the driving component, and a magnetic strip 112 is installed at one end of the coil 11. A magnetic steel 111 is arranged outside the magnetic strip 112. The moving contact piece 16 is installed on a support plate 14. The support plate 14 is hinged to the top of the driving component through a rotating shaft, and the bottom of the support plate 14 is fixed to the middle of the armature 12; one end of the armature 12 is placed between the magnetic steel 111 and the magnetic strip 112, and a spring 17 is arranged above the other end. The spring 17 is fixed on the driving component housing, and the arc extinguishing cover 15 is arranged above the spring 17. When the coil is energized, the electromagnetic force generated by the coil overcomes the magnetic force of the magnetic steel, and the armature drives the moving spring assembly to rotate under the action of the electromagnetic force, thereby realizing the closing of the relay contacts; when the coil is de-energized, the electromagnetic force generated disappears, and the armature drives the moving spring assembly to rotate under the action of the magnetic force of the magnetic steel, thereby realizing the opening of the relay contacts;

[0023] Furthermore, there is a certain distance between the magnet 111 and the magnetic strip 112 and the tops are bent in the same direction. One end of the armature 12 is placed between the two bends, and mutual limiting is formed between the magnet 111 and the magnetic strip 112 to confine the moving contact piece between the magnet 111 and the magnetic strip 112.

[0024] Further, such as Figure 4 As shown, four signal wiring terminals 2 and four working terminals 3 are respectively installed on the static touch plate 6, and the four signal wiring terminals 2 and four working terminals 3 are respectively placed at both ends of the static touch plate 6. The seat plate mainly plays a sealing role to ensure that the sealing of the product meets the performance requirements; the terminal and static contact assembly mainly play a guiding role and are used to connect external loads.

[0025] Furthermore, a cover plate 5 is installed on the stationary touch plate 6, and a terminal through hole A8 and a terminal through hole B9 are provided on the cover plate 5 for the signal terminal 2 and the working terminal 3 to pass through respectively. Figure 5As shown, a partition plate 4 is also provided on the cover plate 5 to separate the four working terminals 3 .

[0026] like Figure 5 As shown, the partition 4 is a cross partition placed between four roots.

[0027] like Figure 6 As shown, a rubber pad 7 is also provided between the cover plate 5 and the static contact plate 6. When the partition is fixed, the seat plate will be damaged to a certain extent during the process of tightening the nut, which may easily cause the glass insulator on the seat plate to break and reduce the sealing of the product. The rubber pad can play a buffering and protective role in this process, thereby protecting the seat plate.

Claims

1. A high voltage relay with arc extinguishing capability, comprising a drive assembly and a stationary contact plate (6), characterized in that: The static contact plate (6) is provided with a plurality of signal wiring blocks (2) and working terminals (3), the working terminals (3) extend into the bottom of the static contact plate (6) and are connected to the static contacts installed at the bottom of the static contact plate (6), and the plurality of signal wiring blocks (2) and the working terminals (3) are respectively connected correspondingly, a moving contact piece (16) is provided at the upper end of the driving component, and the moving contact piece (16) is driven by a coil (11) installed at the bottom of the driving component, the static contact plate (6) is installed at the top of the driving component, and the static contacts are placed on the movement trajectory of the moving contact piece (16); the static contacts and the moving contact piece (16) are respectively placed at the top and bottom of the arc extinguishing cover (15).

2. The high voltage relay with arc extinguishing capability as claimed in claim 1, characterized in that: The coil (11) is mounted at the bottom of the driving component, a magnetic strip (112) is mounted at one end of the coil (11), a magnetic steel (111) is arranged outside the magnetic strip (112), the movable contact piece (16) is mounted on a support plate (14), the support plate (14) is hinged to the top of the driving component through a rotating shaft, and the bottom of the support plate (14) is fixed to the middle of the armature (12); one end of the armature (12) is placed between the magnetic steel (111) and the magnetic strip (112), and a spring sheet (17) is arranged above the other end, the spring sheet (17) is fixed to the driving component housing, and the arc extinguishing cover (15) is arranged above the spring sheet (17).

3. The high voltage relay with arc extinguishing capability as claimed in claim 2, characterized in that: The magnetic steel (111) and the magnetic conductive strip (112) are spaced apart at a certain distance and the tops thereof are bent in the same direction, and one end of the armature (12) is placed between the two bends.

4. The high voltage relay with arc extinguishing capability as claimed in claim 1, characterized in that: Four signal wiring terminals (2) and four working wiring terminals (3) are respectively installed on the stationary touch plate (6), and the four signal wiring terminals (2) and the four working wiring terminals (3) are respectively placed at two ends of the stationary touch plate (6).

5. The high voltage relay with arc extinguishing capability as claimed in claim 5, characterized in that: A cover plate (5) is also mounted on the stationary contact plate (6). The cover plate (5) is provided with a terminal through hole A (8) and a terminal through hole B (9) for respectively allowing the signal terminal (2) and the working terminal (3) to pass through. The cover plate (5) is also provided with a partition plate (4) for separating the four working terminal (3).

6. The high voltage relay with arc extinguishing capability as claimed in claim 5, characterized in that: The partition (4) is a cross partition placed between four and three.

7. The high voltage relay with arc extinguishing capability as claimed in claim 5, characterized in that: A rubber pad (7) is also provided between the cover plate (5) and the stationary contact plate (6).

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