CN223053163U

CN223053163U - EMC filtering PCB board

Info

Publication number: CN223053163U
Application number: CN202421851431.4U
Authority: CN
Inventors: 周钰; 万志兵
Original assignee: Shenzhen Zhouli Electronic Technology Co ltd
Current assignee: Shenzhen Zhouli Electronic Technology Co ltd
Priority date: 2024-08-01
Filing date: 2024-08-01
Publication date: 2025-07-01
Anticipated expiration: 2034-08-01

Abstract

The utility model discloses an EMC filtering PCB board, and relates to the technical field of PCB boards. The utility model comprises a PCB board body, a magnetic ring, and a main board used in conjunction with the PCB board, wherein grooves for limiting the magnetic ring are provided in the middle of both sides of the PCB board body, and two upper input pins and lower output pins connected to the wiring line circuit in the middle of the front and rear sides of the PCB board body are provided at the upper and lower ends of the PCB board body; the lower end of the PCB board body is plugged with the main board through two lower output pins, and a first positioning hole for plugging the lower output pin is provided in the middle of the main board. The utility model replaces the disadvantage that the existing output line and input line need to be wound around the magnetic ring for two to three turns before being connected to the main board, which occupies a large space inside the electronic device, by setting the PCB body, that is, the PCB board body is used to replace the wire wound inside the magnetic ring, which effectively reduces the area occupied by the existing structure.

Description

EMC filtering PCB board

Technical Field

The utility model belongs to the field of PCB boards, and particularly relates to an EMC filter PCB board.

Background

In the design of electronic products, because of the requirement of electromagnetic compatibility, a magnetic ring is often sleeved on an input line or an output line, and the number of turns is generally two to three, but the magnetic ring occupies space in the product, is not easy to place, increases the occupied space of a main board, and is inconvenient to install with the main board.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide an EMC filter PCB.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:

The utility model provides an EMC filtering PCB board, includes PCB board main part, magnetic ring and the mainboard that cooperates the PCB board to use, the recess that supplies the magnetic ring spacing is all offered at the both sides middle part of PCB board main part, is equipped with two upper input terminal pins and lower output terminal pins that walk the line circuit to be connected with the both sides middle part around the PCB board main part at the upper and lower both ends of PCB board main part;

The lower end of the PCB main body is spliced with the main board through two lower output end pins, a first positioning hole for splicing the lower output end pins is formed in the middle of the main board, and a fixing protruding end which is in butt joint with a second positioning hole in the middle of the main board is also fixed in the middle of the lower end of the PCB main body;

And leads matched with the wiring lines in number are wound outside the magnetic ring and are connected with the wiring line circuit.

Optionally, the outer dimension of the upper end of the PCB main body is smaller than the outer dimension of the lower end of the PCB main body, the edge of the upper end of the PCB main board is designed as a chamfer, and the outer dimension of the upper end of the PCB main body is slightly larger than the inner dimension of the magnetic ring.

Optionally, the inner walls of the two first positioning holes are symmetrically provided with contact metal blocks connected with the main board circuit, and a fixing area for abutting against the end part of the lower output end pin is arranged between the two contact metal blocks.

Optionally, the inner wall of the second positioning hole is fixed with two first elastic rings which are in contact with the concave surface at the outer side of the fixed protruding end.

Optionally, the upper ends of first locating hole and second locating hole all have the annular external member that supplies the plug connector to install through the fix with screw, have all seted up the ring channel of contradicting with the second elastic ring at the inner wall of every annular external member, and second elastic ring fixed mounting is at the outer wall of plug connector, plug connector fixed mounting is in the bottom of PCB board main part, every the top of annular external member is all fixed bonding has the protection pad.

Optionally, four corners of the upper end of the main board are respectively provided with a counter bore penetrated by the mounting bolts, and the upper end of each counter bore is fixedly bonded with an anti-slip gasket.

After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects, and of course, any product for implementing the utility model does not necessarily need to achieve all the following advantages at the same time:

According to the utility model, the existing output line and the input line are replaced by the PCB main body, and the defect that the large space inside the electronic equipment is occupied because the main board is connected to the magnetic ring after two to three turns of the output line and the input line are required to be wound is overcome, namely, the PCB main body is utilized to replace the lead wire wound inside the magnetic ring, so that the occupied area of the existing structure is effectively reduced, the convenience of workers is higher, the input line is only required to be connected with the upper input end pin of the PCB main body when in use, the lead wire is connected with the wiring circuit on the surface of the PCB main body, and then the PCB main body is directly spliced with the two first positioning holes of the main board by utilizing the lower output end pin, so that the assembly flow of the workers is simplified.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The drawings in the following description are only examples of embodiments from which other drawings may be derived by those skilled in the art without the exercise of inventive faculty. In the drawings:

FIG. 1 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 2 is a block diagram of the combined parts of the PCB body, the leads, the traces, the upper input pins and the lower output pins of the present utility model;

FIG. 3 is a block diagram of the assembled parts of the magnetic ring of the present utility model;

FIG. 4 is a schematic longitudinal view of the combined parts of the annular sleeve and the plug of the present utility model;

FIG. 5 is a schematic view of the structure of the part A in FIG. 1;

FIG. 6 is a schematic view of the structure of the part B in FIG. 1;

fig. 7 is a schematic view of the C-part structure in fig. 1.

In the drawings, the list of components represented by the various numbers is as follows:

1. The PCB comprises a PCB main body, 2, a magnetic ring, 3, wiring lines, 4, an upper input end pin, 5, a lower output end pin, 6, a main board, 7, a first positioning hole, 8, a second positioning hole, 9, a fixing protruding end, 10, a lead, 11, a contact metal block, 12, a first elastic ring, 13, a plug connector, 14, an annular sleeve, 15, a second elastic ring, 16, an annular groove, 17, a protection pad, 18, a mounting bolt, 19 and an anti-skid gasket.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 7, the utility model provides a technical scheme that an EMC filter PCB board comprises a PCB board main body 1, a magnetic ring 2 and a main board 6 used in cooperation with the PCB board, wherein the middle parts of two sides of the PCB board main body 1 are provided with grooves for limiting the magnetic ring 2, and two upper input end pins 4 and lower output end pins 5 which are in circuit connection with middle wiring lines 3 on the front side and the rear side of the PCB board main body 1 are arranged at the upper end and the lower end of the PCB board main body 1;

The lower end of the PCB main body 1 is spliced with the main board 6 through two lower output end pins 5, a first positioning hole 7 for splicing the lower output end pins 5 is formed in the middle of the main board 6, and a fixing protruding end 9 which is in butt joint with a second positioning hole 8 in the middle of the main board 6 is also fixed in the middle of the lower end of the PCB main body 1;

The lead 10 which is matched with the wiring lines 3 in number is wound outside the magnetic ring 2, the lead 10 is in circuit connection with the wiring lines 3, and in consideration of the requirement of electromagnetic compatibility in the design of electronic products, the magnetic ring 2 is often sleeved on an input line or an output line, and the number of turns of two to three turns is generally increased, but the magnetic ring 2 occupies space inside the product, is not easy to place, the occupied space of the main board 6 is increased, and the problem of inconvenience exists when the magnetic ring is installed with the main board 6.

The outer dimension of the upper end of the PCB main body 1 is smaller than the outer dimension of the lower end of the PCB main body 1, the upper end edge of the PCB main board 6 is designed with a chamfer, the outer dimension of the upper end of the PCB main body 1 is slightly larger than the inner dimension of the magnetic ring 2, and when the PCB main body 1 is designed, the upper end dimension of the PCB main body 1 is designed to be smaller than the lower end dimension of the PCB main body 1, so that the magnetic ring 2 can be clamped in the middle of the PCB main body 1, and the upper end dimension of the PCB main body 1 is designed to be slightly larger than the inner dimension of the magnetic ring 2, and the edge is designed with a chamfer, so that when the magnetic ring 2 is installed, the PCB main body 1 can be directly inserted into the inner portion of the magnetic ring 2, namely, the PCB has a certain toughness, and after being bent, the magnetic ring 2 can be just inserted into the inner portion of the magnetic ring 2, and the magnetic ring can not be just clamped in the middle of the PCB main body 1.

Wherein, the inner wall of two first locating holes 7 all symmetry be equipped with the contact metal piece 11 of mainboard 6 circuit connection, and be equipped with the fixed area that supplies the tip of lower output terminal pin 5 to contradict between two contact metal pieces 11, when making PCB board main part 1 peg graft first locating hole 7 through setting up contact metal piece 11, mainboard 6 will contradict with lower output terminal pin 5 through contact metal piece 11 to supply the external connection to be connected with through PCB board main part 1 and mainboard 6 circuit.

Wherein, the inner wall of the second locating hole 8 is fixed with two first elastic rings 12 that contradict with the outside concave surface of the fixed protruding end 9, consider that connect is accomplished through the lower locating hole of lower output pin grafting between PCB board main part 1 and the mainboard 6 for lower output pin is the bearing point, when the device receives vibrations, can arouse the fracture of lower output pin, consequently in order to improve this condition, the device will utilize fixed protruding end 9 and second locating hole 8 to and plug connector 13 and annular external member 14 carry out supplementary fixed, thereby improve the steadiness between PCB board main part 1 and the mainboard 6, effectively avoided lower output pin 5 to be the bearing point and lead to its problem that receives vibrations easy fracture.

The upper ends of the first positioning holes 7 and the second positioning holes 8 are respectively provided with an annular sleeve 14 for installing the plug connector 13 through screw fixation, annular grooves 16 which are in contact with the second elastic rings 15 are respectively formed in the inner wall of each annular sleeve 14, the second elastic rings 15 are fixedly installed on the outer wall of the plug connector 13, the plug connector 13 is fixedly installed at the bottom of the PCB main body 1, protection pads 17 are fixedly adhered to the top of each annular sleeve 14, and the second elastic rings 15 are arranged so that when the annular sleeve 14 is plugged with the plug connector 13, the second elastic rings 15 can be embedded into the annular grooves 16, so that friction force between the plug connector 13 and the annular sleeve 14 is increased, and the fixing effect is improved.

The four corners of the upper end of the main board 6 are respectively provided with a counter bore penetrated by the mounting bolts 18, the upper end of each counter bore is fixedly bonded with an anti-slip washer 19, the mounting bolts 18 are arranged to fix the main board 6 and the electronic equipment, and the anti-slip washers 19 play a role in increasing friction between the mounting bolts 18 and the counter bores.

The present utility model is not limited to the above embodiments, and any person who can learn the structural changes made under the teaching of the present utility model can fall within the scope of the present utility model if the present utility model has the same or similar technical solutions. The technology, shape, and construction parts of the present utility model, which are not described in detail, are known in the art.

Claims

1. An EMC filter PCB board, comprising a PCB board body (1), a magnetic ring (2) and a main board (6) used in conjunction with the PCB board, characterized in that grooves for limiting the magnetic ring (2) are provided in the middle of both sides of the PCB board body (1), and two upper input pins (4) and lower output pins (5) are provided at the upper and lower ends of the PCB board body (1) and are connected to the wiring lines (3) in the middle of the front and rear sides of the PCB board body (1);

The lower end of the PCB board body (1) is plugged into the main board (6) via two lower output pins (5); a first positioning hole (7) for plugging the lower output pins (5) is provided in the middle of the main board (6); a fixed protruding end (9) is also fixed in the middle of the lower end of the PCB board body (1) and is connected to a second positioning hole (8) in the middle of the main board (6);

Lead wires (10) matching the number of the trace wires (3) are wound around the outside of the magnetic ring (2), and the lead wires (10) are connected to the trace wires (3) in a circuit.

2. An EMC filtering PCB board according to claim 1, characterized in that the outer dimensions of the upper end of the PCB board body (1) are smaller than the outer dimensions of the lower end of the PCB board body (1), and the upper edge of the PCB main board (6) is chamfered, and the outer dimensions of the upper end of the PCB board body (1) are slightly larger than the inner dimensions of the magnetic ring (2).

3. An EMC filter PCB board according to claim 1, characterized in that the inner walls of the two first positioning holes (7) are symmetrically provided with contact metal blocks (11) connected to the circuit of the main board (6), and a fixed area for the end of the lower output pin (5) to abut is provided between the two contact metal blocks (11).

4. An EMC filter PCB board according to claim 1, characterized in that two first elastic rings (12) are fixed to the inner wall of the second positioning hole (8) and are in contact with the outer concave surface of the fixed protruding end (9).

5. An EMC filtering PCB board according to claim 1, characterized in that an annular sleeve (14) for mounting a plug-in connector (13) is fixed to the upper ends of the first positioning hole (7) and the second positioning hole (8) by screws, an annular groove (16) for contacting the second elastic ring (15) is provided on the inner wall of each annular sleeve (14), and the second elastic ring (15) is fixedly mounted on the outer wall of the plug-in connector (13), the plug-in connector (13) is fixedly mounted on the bottom of the PCB board body (1), and a protective pad (17) is fixedly bonded to the top of each annular sleeve (14).

6. An EMC filter PCB board according to claim 1, characterized in that countersunk holes for the installation bolts (18) to pass through are formed at the four corners of the upper end of the main board (6), and a non-slip gasket (19) is fixedly bonded to the upper end of each countersunk hole.