Harmonic filtering device for high-voltage electric box

Abstract

The utility model discloses a harmonic filtering device for a high-voltage electric box, relates to the field of harmonic filtering devices, and provides the following scheme aiming at the problem of inconvenient wiring of the existing harmonic filter: the harmonic filtering device comprises a shell and a wire pressing mechanism, the shell comprises a bottom shell and an upper cover, two ends of the bottom shell and two ends of the upper cover are provided with clamping rings through splicing, and the clamping rings are connected with the wire pressing mechanism. Two groups of clamping rings and binding posts are arranged at the two ends of the shell, a wire pressing mechanism is arranged between each pair of binding posts and comprises a pair of pressing blocks, sliding grooves are formed in the pressing blocks and are connected with the binding posts in a sleeving manner, cambered surfaces are formed in the sides, close to each other, of the two groups of pressing blocks, and the two groups of pressing blocks are arranged in the sliding grooves in a sleeving manner. The center of circle of the cambered surface and the center of circle of the binding post are eccentrically arranged, and the side wall of one end, outside the shell, of the binding post is provided with a groove parallel to the axial direction of the binding post. The harmonic filter is novel in structure, and effectively solves the problem that wiring of an existing harmonic filter is inconvenient.

Description

Technical Field

[0001] The utility model relates to the field of harmonic filtering devices, in particular to a high-voltage electric box harmonic filtering device. Background Art

[0002] A harmonic filter is often installed at the power access end of an electrical box so that the entire electrical box can obtain a stable power input. When wiring such existing filters, the wires need to be connected to the terminal posts of the filter using ring terminals and then locked with nuts, or the wires need to be stripped and wrapped around the terminal posts and then locked with nuts. The former requires the use of professional terminal crimping tools, and the installation tool cost is high and the operation is cumbersome. The latter's exposed copper wire is easily squeezed and damaged by the nut, resulting in a virtual connection. Therefore, in order to optimize the above problems and make the wiring of the harmonic filter simple and reliable, we propose a harmonic filter device for a high-voltage electrical box. Utility Model Content

[0003] The utility model provides a high-voltage electric box harmonic filtering device, which solves the problem of inconvenient wiring of the existing harmonic filter.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-voltage electric box harmonic filtering device comprises a shell and a wire pressing mechanism, wherein the shell comprises a bottom shell and an upper cover, and clamping rings are provided at both ends of the bottom shell and the upper cover by splicing, and a terminal is rotatably sleeved in the clamping ring, and two groups of clamping rings and terminal are provided at both ends of the shell, and a wire pressing mechanism is provided between each pair of the terminal, and the wire pressing mechanism comprises a pair of pressing blocks, the pressing blocks are provided with a slide groove and sleeved with the terminal, and the two groups of pressing blocks are provided with an arc surface on the side close to each other, and the center of the arc surface is eccentrically arranged with the center of the terminal, and the terminal is located at one end of the shell The side wall is parallel to its axial direction and has a groove, the two groups of pressing blocks deflect with the terminal as the axis, and the two groups of arc surfaces roll and squeeze each other, compressing the space between the groove and the slide groove to compress the wire.

[0006] Preferably, both inner walls on both sides of the bottom shell are provided with card slots, and both inner walls on both sides of the upper cover are provided with buckles, and the bottom ends of the buckles are buckled with the card slots.

[0007] Preferably, wrenches are arranged in a V-shape at the top ends of the two groups of pressing blocks of each group of the wire pressing mechanism.

[0008] Preferably, the wrench is provided with a slot for inserting a cable tie, and the top end of the wrench is provided with a cylindrical head for anti-slip.

[0009] Preferably, a buckle ring is provided on the inner wall of the clamp ring, and an annular groove is opened on the peripheral wall of the terminal, the annular groove is sleeved with the buckle ring, the outer end of the terminal is provided with a flat head to prevent the pressure block from falling off, and the inner end of the terminal is provided with a semi-annular welding groove.

[0010] Preferably, both ends of the bottom shell are provided with fixing ears, and the fixing ears are provided with fixing holes.

[0011] The beneficial effects of the utility model are:

[0012] The device does not require any tools or twisting or bending of the copper wire in the conductor for wiring. It only requires placing the copper wire of the conductor between the groove and the slide groove, and by squeezing two sets of wrenches, the two pressure blocks are driven to deflect with the terminal as the axis. The eccentric design of the arc center of the pressure block and the center of the terminal makes the two sets of arc surfaces approach each other, contact and push each other during the deflection of the pressure block, so that the space between the slide groove and the groove is continuously compressed and reduced to tighten the copper wire of the conductor. The cable tie can be passed through the slot of the wrench to tighten it. The operation is simple and convenient, and the connection method of crimping the copper wire of the conductor by wrapping the arc surface is firm and reliable.

[0013] In summary, the device effectively solves the problem of inconvenient wiring of existing harmonic filters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the wire pressing mechanism of the utility model in an open state.

[0015] Figure 2 It is a structural schematic diagram of the wire pressing mechanism of the utility model in a pressing state.

[0016] Figure 3 It is a structural exploded view of the box body of the utility model.

[0017] Figure 4 It is a schematic diagram of the structure of the pressing block of the utility model.

[0018] Numbers in the figure: 1, bottom shell; 101, upper cover; 102, buckle; 103, slot; 104, fixing ear; 105, fixing hole; 106, clamping ring; 107, buckle; 2, terminal; 201, annular groove; 202, welding groove; 203, flat head; 204, groove; 3, pressing block; 301, slide groove; 302, arc surface; 303, wrench; 304, through groove; 305, cylindrical head. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 4 A high-voltage electric box harmonic filtering device comprises a shell and a wire pressing mechanism, wherein the shell comprises a bottom shell 1 and an upper cover 101, and clamp rings 106 are provided at both ends of the bottom shell 1 and the upper cover 101 by splicing, and a terminal 2 is rotatably sleeved in the clamp ring 106, and two sets of clamp rings 106 and terminal 2 are provided at both ends of the shell, and a wire pressing mechanism is provided between each pair of terminal 2.

[0021] refer to Figure 1 and Figure 2 At the top of the two groups of pressing blocks 3 of each group of wire pressing mechanism, a wrench 303 is arranged in a V-shaped distribution to facilitate the deflection of the pressing block 3. The wrench 303 is provided with a groove 304 for inserting a cable tie, and a cylindrical head 305 is arranged on the top of the wrench 303 for anti-slip.

[0022] refer to Figure 3 A buckle ring 107 is provided on the inner wall of the clamp ring 106, and an annular groove 201 is provided on the peripheral wall of the terminal 2. The annular groove 201 is sleeved with the buckle ring 107, so that the terminal 2 is rotatably connected to the shell. A flat head 203 is provided at the outer end of the terminal 2 to prevent the pressure block 3 from falling off, and a semi-annular welding groove 202 is provided at the inner end of the terminal 2 for connecting the terminal 2 and the internal circuit of the shell. Fixing ears 104 are provided at both ends of the bottom shell 1, and the fixing ears 104 are provided with fixing holes 105 for assembling the device with the electrical box. Slots 103 are provided on the inner walls of both sides of the bottom shell 1, and buckles 102 are provided on the inner walls of both sides of the upper cover 101, and the bottom ends of the buckles 102 are buckled with the slots 103.

[0023] The working principle of this device to solve the inconvenience of wiring of existing harmonic filters: the device does not require tools for wiring and does not need to twist and bend the copper wire in the conductor. The operation method is as follows: Figure 1 After the wire is stripped, the copper wire is placed between the groove 204 and the slide groove 301, and the two sets of wrenches 303 are pinched toward the middle, so that the two pressing blocks 3 deflect with the terminal 2 as the axis. Since the center of the arc surface 302 of the pressing block 3 is eccentric to the center of the terminal 2, the two sets of arc surfaces 302 approach each other during the deflection of the pressing block 3. When the two sets of arc surfaces 302 contact and push each other, the space between the slide groove 301 and the groove 204 is continuously compressed and reduced. Figure 2 , until the pressing block 3 and the terminal 2 compress the copper wire, take the cable tie and pass it through the slot 304 of the wrench 303 to tighten it;

[0024] The specific structure is that it includes a pair of pressing blocks 3, each of which is provided with a slide groove 301 that is sleeved with the terminal 2, and a curved surface 302 is provided on the side where the two groups of pressing blocks 3 are close to each other, and the center of the curved surface 302 is eccentrically arranged with the center of the terminal 2, and the terminal 2 is located on the side wall of one end outside the shell and is parallel to its axial direction. The two groups of pressing blocks 3 are deflected with the terminal 2 as the axis, and the two groups of curved surfaces 302 roll and squeeze each other, compressing the space between the groove 204 and the slide groove 301 to compress the wire.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-voltage electric box harmonic filtering device, comprising a housing and a wire pressing mechanism, characterized in that: The housing comprises a bottom housing (1) and an upper cover (101), the bottom housing (1) and the upper cover (101) are provided with clamping rings (106) at both ends by splicing, a terminal (2) is rotatably sleeved in the clamping ring (106), two sets of clamping rings (106) and terminal (2) are provided at both ends of the housing, and a wire pressing mechanism is provided between each pair of terminal (2), the wire pressing mechanism comprising a pair of pressing blocks (3), the pressing blocks (3) being provided with a slide groove (301) and a terminal (2) are sleeved, and the two groups of pressing blocks (3) are provided with an arc surface (302) on the side close to each other, and the center of the arc surface (302) is eccentrically arranged with the center of the terminal (2), and the terminal (2) is provided with a groove (204) on the side wall of one end outside the shell and parallel to its axial direction, and the two groups of pressing blocks (3) are deflected with the terminal (2) as the axis, and the two groups of arc surfaces (302) roll and squeeze each other, compressing the space between the groove (204) and the slide groove (301) to press the wire tightly.

2. A high-voltage electric box harmonic filtering device according to claim 1, characterized in that: Both inner walls of the bottom shell (1) are provided with slots (103), and both inner walls of the top cover (101) are provided with buckles (102), and the bottom ends of the buckles (102) are buckled with the slots (103).

3. A high voltage electric box harmonic filtering device according to claim 1, characterized in that: The top ends of the two groups of pressing blocks (3) of each group of the wire pressing mechanism are provided with wrenches (303) in a V-shaped distribution.

4. A high-voltage electric box harmonic filtering device according to claim 3, characterized in that: The wrench (303) is provided with a slot (304) for inserting a cable tie, and a cylindrical head (305) for anti-slip is arranged at the top of the wrench (303).

5. A high voltage electric box harmonic filtering device according to claim 1, characterized in that: The inner wall of the clamp ring (106) is provided with a buckle ring (107), and the peripheral wall of the terminal (2) is provided with an annular groove (201), the annular groove (201) is sleeved with the buckle ring (107), the outer end of the terminal (2) is provided with a flat head (203) to prevent the pressure block (3) from falling off, and the inner end of the terminal (2) is provided with a semi-annular welding groove (202).

6. A high voltage electric box harmonic filtering device according to claim 1, characterized in that: Both ends of the bottom shell (1) are provided with fixing ears (104), and the fixing ears (104) are provided with fixing holes (105).

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