Large-current three-phase filter inductor

Abstract

The utility model discloses a large-current three-phase filter inductor which comprises a three-phase filter inductor body, the three-phase filter inductor body comprises U-shaped magnetic core bodies, the end portions of the two U-shaped magnetic core bodies are bonded and fixed through epoxy resin glue, and flat wire coils are arranged at the connecting positions of the end portions of the two U-shaped magnetic core bodies. By designing a dismounting and replacing mechanism, an external thread head can be rotationally fixed in a conductive internal thread hole until the external thread head abuts against a top wire for connection, and the end part of a reinforcing clamping block is completely installed to correspond to a clamping hole; the reinforcing clamping blocks are elastically clamped in the clamping holes to reinforce and mount the external thread heads and the mounting pins under the action of deformation of the compression springs, so that the mounting pins are fixedly mounted and used, and when the three-phase filter inductor main body is mounted on a PCB (printed circuit board) and the mounting pins are bent or are damaged due to maintenance and disassembly, the mounting pins can be fixedly mounted and used. And disassembly and replacement are convenient by reverse operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-phase filter inductors, and particularly relates to a high-current three-phase filter inductor. Background Art

[0002] The existing three-phase filter inductor is composed of two U-shaped magnetic core bodies with the same specifications and flat copper coils. The bonding surface between the two U-shaped magnetic core bodies is connected and fixed with epoxy resin glue. The installation direction of the flat copper wire is consistent with the radial direction of the magnetic core, making the structure of the three-phase filter inductor simple. The number of turns of the flat copper wire can be adjusted according to the inductive reactance, and it has a large load current and stable performance, and is widely used in industries such as electric power;

[0003] Before use, when the existing three-phase filter inductor is installed on a PCB board, the end of the pin is directly fixed by clamping and injecting glue with the bottom pin of the coil of the three-phase filter inductor. Therefore, when the three-phase filter inductor is installed on the PCB board, the pin is bent. At the same time, when it is damaged during use on the installed PCB board and needs to be disassembled and repaired, it is easy to damage the pin or even break it and cannot be used at this time. Therefore, it is not convenient to disassemble, install and replace the pins of the three-phase filter inductor, and even the contact of the three-phase filter inductor during installation and use is poor and cannot be used, affecting the convenience of disassembling, installing and replacing the pins of the three-phase filter inductor during installation and use. For this reason, the utility model provides a high-current three-phase filter inductor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-current three-phase filter inductor to solve the problems that when the three-phase filter inductor is installed on the PCB board, the pin is bent, and when it is damaged during use on the installed PCB board and needs to be disassembled and repaired, it is easy to damage the pin or even break it and cannot be used at this time, and it is not convenient to disassemble, install and replace the pins, affecting the convenience of disassembling, installing and replacing the pins of the three-phase filter inductor during installation and use as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a high-current three-phase filter inductor, including a three-phase filter inductor main body, the three-phase filter inductor main body includes U-shaped magnetic core bodies, the ends of the two U-shaped magnetic core bodies are bonded and fixed by epoxy resin glue, flat wire coils are arranged at the connection positions of the ends of the two U-shaped magnetic core bodies, a reinforcing member is arranged at the middle position of the two U-shaped magnetic core bodies, two installation pins are arranged on both sides of the bottom end of the flat wire coil, an insulating bottom plate is arranged on the lower surface of the bottom end of the U-shaped magnetic core body, and the following are further arranged on the three-phase filter inductor main body:

[0006] A disassembly, installation and replacement mechanism, and this disassembly, installation and replacement mechanism includes a rotary installation component arranged at the connection position between the bottom end of the flat wire coil and the end of the installation pin, and an elastic reinforcement component is arranged at the edge of the rotary installation component at the bottom end of the flat wire coil;

[0007] An elastic connection mechanism, and the elastic connection mechanism includes two elastic connection components arranged on both sides of the insulating bottom plate, and a fixed installation component is arranged at the end of the elastic connection component.

[0008] Preferably, the rotary installation component includes an external thread head integrally formed at the top end of the installation pin, two conductive internal thread holes are opened on the lower surface of the flat wire coil, and the inside of the conductive internal thread hole is electrically connected to the end of the flat wire coil.

[0009] Preferably, the elastic reinforcement component includes a fixing ring fixed at the edge of the conductive internal thread hole at the bottom end of the flat wire coil by a fixing screw, reinforcing blocks are limitedly connected at the inner edge of the fixing ring, a compression spring is adhesively bonded to the connection between the end of the reinforcing block and the inside of the fixing ring by glue, and a clamping hole is opened at the edge of the external thread head.

[0010] Preferably, the reinforcing block is elastically connected to the inside of the fixing ring through the compression spring, and the end of the reinforcing block is engaged with the inside of the clamping hole.

[0011] Preferably, a threaded lever slides on the lower surface of the fixing ring, and the end of the threaded lever is rotationally connected to the lower surface of the reinforcing block through a threaded structure.

[0012] Preferably, the elastic connection component includes fixing plates arranged at the ends of both sides of the insulating bottom plate, an elastic connecting piece is arranged at the connection between the fixing plate and the insulating bottom plate, and a deformation groove is opened at the edge of the elastic connecting piece.

[0013] Preferably, the fixed installation component includes an installation hole opened on one side of the insulating bottom plate and the fixing plate, installation clamping heads are arranged at both ends of the elastic connecting piece, installation screws are rotated at the ends of the insulating bottom plate and the fixing plate, and the installation clamping heads are rotationally fixed to the inside of the installation hole through the installation screws.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] By designing a disassembly and replacement mechanism, the external thread head can be rotated and fixed inside the conductive internal thread hole until it abuts against the top wire connection. When the end of the fully installed reinforcing block corresponds to the clamping hole, the reinforcing block is elastically clamped inside the clamping hole through the deformation of the compression spring to reinforce and install the external thread head and the installation pin, so as to fixedly install and use the installation pin. Therefore, when the three-phase filter inductor main body is used on the PCB board, when the installation pin is bent or damaged during maintenance and disassembly, the reverse operation is carried out for disassembly and replacement, which is convenient for disassembly and replacement, and improves the convenience of disassembly and replacement of the installation pin when the three-phase filter inductor main body is installed and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the U-shaped magnetic core body and the flat wire coil of the present utility model;

[0018] Figure 3 is the partial sectional view structural schematic diagram of the external thread head, the flat wire coil and the mounting pin of the present utility model;

[0019] Figure 4 is the present utility model Figure 3 the enlarged structural schematic diagram of part B therein;

[0020] Figure 5 is the present utility model Figure 1 the enlarged structural schematic diagram of part A therein;

[0021] Figure 6 is the present utility model Figure 5 the enlarged structural schematic diagram of part C therein;

[0022] In the figure: 100, the three-phase filter inductor main body; 101, the U-shaped magnetic core body; 102, the flat wire coil; 103, the mounting pin; 1031, the conductive internal threaded hole; 1032, the external thread head; 1033, the fixing ring; 1034, the compression spring; 1035, the card hole; 1036, the reinforcement card block; 1037, the threaded lever; 104, the insulating bottom plate; 1041, the fixing plate; 1042, the elastic connecting piece; 1043, the mounting screw; 1044, the mounting hole; 1045, the mounting chuck; 1046, the deformation groove; 105, the reinforcement member. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 6, the present utility model provides a technical solution: a high-current three-phase filter inductor, including a three-phase filter inductor main body 100, the three-phase filter inductor main body 100 includes a U-shaped magnetic core body 101, the ends of two U-shaped magnetic core bodies 101 are adhesively fixed by epoxy resin glue, flat wire coils 102 are arranged at the connection positions of the ends of the two U-shaped magnetic core bodies 101, the installation direction of the flat wire coils 102 is the same as the radial direction of the U-shaped magnetic core body 101, and the coils are magnetically isolated by an insulating bottom plate 104. A reinforcing member 105 is arranged at the middle position of the two U-shaped magnetic core bodies 101. Two installation pins 103 are arranged on both sides of the bottom end of the flat wire coil 102. An insulating bottom plate 104 is arranged on the lower surface of the bottom end of the U-shaped magnetic core body 101, and is fixedly installed by screws through the fixing holes aligned by the fixing plate 1041. Then, the installation pins 103 are soldered to the circuits on the PCB board. Therefore, the three-phase filter inductor main body 100 is used by being fixedly installed on the PCB board. The three-phase filter inductor main body 100 is further provided with:

[0025] A disassembly and replacement mechanism, and the disassembly and replacement mechanism includes a rotary installation component arranged at the connection position between the bottom end of the flat wire coil 102 and the end of the installation pin 103. An elastic reinforcement component is arranged at the edge of the rotary installation component at the bottom end of the flat wire coil 102. When the installation pin 103 is bent during the installation and use of the three-phase filter inductor main body 100 and damaged during the disassembly and repair of the installation pin 103, the disassembly and replacement mechanism can disassemble and replace the installation pin 103, which is convenient for disassembly and replacement, and improves the convenience of disassembling and replacing the installation pin 103 during the installation and use of the three-phase filter inductor main body 100.

[0026] In order to facilitate the rotary fixed installation of the installation pin 103 through the rotary installation component, and vice versa for rotary disassembly. In this embodiment, preferably, the rotary installation component includes an external thread head 1032 integrally formed at the top end of the installation pin 103. Two conductive internal thread holes 1031 are opened on the lower surface of the flat wire coil 102, and the inside of the conductive internal thread holes 1031 is electrically connected to the end of the flat wire coil 102. The installation pin 103 is rotary fixed and installed by rotating the external thread head 1032 inside the conductive internal thread hole 1031, which is easy to be fixedly installed and used, and vice versa, it is convenient to disassemble and replace when damaged.

[0027] In order to facilitate the rotation and fixed installation of the external thread head 1032 through the elastic reinforcement component and reinforce the installation again, in this embodiment, preferably, the elastic reinforcement component includes a fixing ring 1033 fixed at the edge of the conductive internal thread hole 1031 and located at the bottom end of the flat wire coil 102 by fixing screws. Reinforcement blocks 1036 are connected in a limited way at the inner edges of the fixing ring 1033. At the connection between the end of the reinforcement block 1036 and the inside of the fixing ring 1033, a compression spring 1034 is adhesively bonded by glue, which is convenient for elastically connecting the reinforcement blocks 1036 through the compression spring 1034 inside the fixing ring 1033, and is easy for elastic clamping. A clamping hole 1035 is provided at the edge of the external thread head 1032, and the end of the reinforcement block 1036 is clamped with the inside of the clamping hole 1035 until the reinforcement block 1036 is elastically clamped inside the clamping hole 1035 to reinforce the installation of the external thread head 1032, so as to reinforce the installation and use of the installation pin 103. A threaded lever 1037 slides on the lower surface of the fixing ring 1033, and the end of the threaded lever 1037 is rotationally connected to the lower surface of the reinforcement block 1036 through a threaded structure. When the installation pin 103 is damaged and disassembled and replaced, the threaded lever 1037 can be toggled to adjust the opening of the reinforcement block 1036 for use, and when clamping and installing, the threaded lever 1037 can be rotated to strengthen the fixed installation of the reinforcement block 1036.

[0028] An elastic connection mechanism, and the elastic connection mechanism includes two elastic connection components arranged on both sides of the insulating base plate 104. A fixed installation component is arranged at the end of the elastic connection component. When the three-phase filter inductor main body 100 is fixed on different PCB boards, the elastic connection mechanism can adjust the fixing plate 1041 to the fixing hole for fixed installation, which is convenient for installation and improves the convenience of adjusting and installing the fixing plate 1041 when the three-phase filter inductor main body 100 is fixed and installed.

[0029] In order to facilitate the adjustment of the installation angle of the fixing plate 1041 through the elastic connection component and facilitate the corresponding fixed installation with the fixing hole on different PCB boards, in this embodiment, preferably, the elastic connection component includes fixing plates 1041 arranged at both ends of both sides of the insulating base plate 104. An elastic connecting piece 1042 is arranged at the connection between the fixing plate 1041 and the insulating base plate 104. A deformation groove 1046 is provided at the edge of the elastic connecting piece 1042. The elastic connecting piece 1042 is bent through the deformation of the deformation groove 1046, and the elastic connecting piece 1042 is bent to fixedly install the fixing plate 1041 corresponding to the fixing hole of the PCB board.

[0030] In order to facilitate the fixed installation of the end of the elastic connecting member 1042 to the insulating base plate 104 and the fixing plate 1041 through a fixed installation component, in this embodiment, preferably, the fixed installation component includes mounting holes 1044 formed on one side of the insulating base plate 104 and the fixing plate 1041. Mounting chucks 1045 are provided at both ends of the elastic connecting member 1042, so that the end of the elastic connecting member 1042 can be clamped and installed to both the insulating base plate 104 and the fixing plate 1041 by clamping the mounting chucks 1045 inside the mounting holes 1044. Mounting screws 1043 are rotated at the ends of the insulating base plate 104 and the fixing plate 1041. The mounting chucks 1045 and the inside of the mounting holes 1044 are rotationally fixed by the mounting screws 1043, and the mounting screws 1043 are rotated again for reinforcement after the mounting chucks 1045 are clamped and installed, so as to fixedly install the elastic connecting member 1042.

[0031] The working principle and usage process of the present utility model: When installing this kind of high-current three-phase filter inductor, the installation direction of the flat wire coil 102 is consistent with the radial direction of the U-shaped magnetic core body 101, and the coil is magnetically isolated by the insulating base plate 104. During installation and use, it contacts the installation position on the PCB board through the insulating base plate 104, and the fixing plate 1041 is aligned with the fixing holes and fixed by screws. Then, the installation pins 103 are soldered to the circuits on the PCB board. Therefore, the three-phase filter inductor main body 100 is used after being fixedly installed on the PCB board. Therefore, during use, the number of turns of the copper wire of the flat wire coil 102 is adjusted according to the magnitude of the inductive reactance to change the performance of the carrying current, and it is stably used.

[0032] Then, before the three-phase filter inductor main body 100 is installed and used, when installing the installation pins 103, the external thread head 1032 is rotationally fixed inside the conductive internal thread hole 1031 until it abuts against the top wire connection. After being completely rotationally fixed, the end of the reinforcing block 1036 corresponds to the card hole 1035. At this time, the threaded lever 1037 is loosened, and the reinforcing block 1036 is elastically clamped inside the card hole 1035 by the deformation of the compression spring 1034 to reinforce the installation of the external thread head 1032 and the installation pin 103, so as to fixedly install the installation pin 103 for use. Therefore, when the three-phase filter inductor main body 100 is used after being installed on the PCB board, when the installation pins 103 are bent or need to be disassembled and repaired and damaged, the reverse operation is performed for disassembly and replacement, and the disassembly and replacement are convenient, which improves the convenience of disassembly and replacement of the installation pins 103 when the three-phase filter inductor main body 100 is installed and used.

[0033] Finally, before the three-phase filter inductor body 100 is installed and used, the end of the mounting clamp 1045 is again clamped in the interior of the mounting hole 1044, and the mounting screw 1043 is rotated to reinforce the mounting clamp 1045, so that the end of the elastic connector 1042 is fixedly installed with the insulating bottom plate 104 and the fixing plate 1041. When the three-phase filter inductor body 100 is installed on different PCB boards for use, if the position of the fixing plate 1041 does not correspond to the position of the fixing hole on the PCB board, the fixing plate 1041 is pulled to tighten the fixing screw 1043. When the deformation groove 1046 is deformed, the elastic connecting member 1042 is deformed to adjust the fixing plate 1041 to the position of the fixing hole, and the screws penetrate the inside of the fixing plate 1041 to fix it again. It is convenient to adjust the angle of the fixing plate 1041 when the three-phase filter inductor body 100 is installed, and it is convenient to fix and install it on different PCB boards, which is convenient to install, and improves the convenience of adjusting and installing the fixing plate 1041 when the three-phase filter inductor body 100 is fixedly installed and used.

[0034] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high current three-phase filter inductor, comprising a three-phase filter inductor body (100), wherein the three-phase filter inductor body (100) comprises a U-shaped magnetic core body (101), the ends of the two U-shaped magnetic core bodies (101) are fixed by epoxy resin glue, a flat wire coil (102) is arranged at the connection of the ends of the two U-shaped magnetic core bodies (101), a reinforcement member (105) is arranged at the middle position of the two U-shaped magnetic core bodies (101), two mounting pins (103) are arranged on both sides of the bottom end of the flat wire coil (102), and an insulating bottom plate (104) is arranged on the lower surface of the bottom end of the U-shaped magnetic core body (101), characterized in that: The three-phase filter inductor body (100) is also provided with: A disassembly, assembly and replacement mechanism, wherein the disassembly, assembly and replacement mechanism comprises a rotating installation component arranged at the connection between the bottom end of the flat wire coil (102) and the end of the installation pin (103), wherein an elastic reinforcement component is arranged at the edge of the rotating installation component located at the bottom end of the flat wire coil (102); An elastic connection mechanism comprises two elastic connection components arranged on both sides of an insulating bottom plate (104), and fixed installation components are arranged at the ends of the elastic connection components.

2. A high current three-phase filter inductor according to claim 1, characterized in that: The rotating installation component comprises an external thread head (1032) integrally formed on the top of the installation pin (103), and the lower surface of the flat wire coil (102) is provided with two conductive internal thread holes (1031), and the interior of the conductive internal thread holes (1031) is electrically connected to the end of the flat wire coil (102).

3. A high current three-phase filter inductor according to claim 2, characterized in that: The elastic reinforcement component comprises a fixing ring (1033) fixed at the edge of the conductive internal thread hole (1031) and located at the bottom end of the flat wire coil (102) by means of fixing screws, the inner edge of the fixing ring (1033) is connected with a reinforcing clamp (1036) in a limiting manner, the end of the reinforcing clamp (1036) and the inner connection of the fixing ring (1033) are bonded with a compression spring (1034) by means of glue, and a clamping hole (1035) is provided at the edge of the external thread head (1032).

4. A high current three-phase filter inductor according to claim 3, characterized in that: The reinforcing clamping block (1036) is elastically connected to the interior of the fixing ring (1033) via the compression spring (1034), and the end of the reinforcing clamping block (1036) is engaged with the interior of the clamping hole (1035).

5. A high current three-phase filter inductor according to claim 3, characterized in that: A threaded lever (1037) is slidably disposed on the lower surface of the fixing ring (1033), and the end of the threaded lever (1037) is rotationally connected to the lower surface of the reinforcement block (1036) via a threaded structure.

6. A high current three-phase filter inductor according to claim 1, characterized in that: The elastic connection assembly comprises a fixing plate (1041) arranged at the ends of both sides of the insulating bottom plate (104), an elastic connection piece (1042) is arranged at the connection between the fixing plate (1041) and the insulating bottom plate (104), and a deformation groove (1046) is provided at the edge of the elastic connection piece (1042).

7. A high current three-phase filter inductor according to claim 6, characterized in that: The fixed installation assembly comprises a mounting hole (1044) opened on one side of the insulating base plate (104) and the fixing plate (1041); mounting clamps (1045) are arranged at both ends of the elastic connecting member (1042); mounting screws (1043) are rotatably arranged at the ends of the insulating base plate (104) and the fixing plate (1041); the mounting clamps (1045) and the interior of the mounting hole (1044) are rotatably fixed by the mounting screws (1043).

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