CN213780884U

CN213780884U - Anti-electromagnetic interference type small computer mainboard

Info

Publication number: CN213780884U
Application number: CN202022682332.6U
Authority: CN
Inventors: 胡田铭; 陈胜钢
Original assignee: Shenzhen Zhongke Electronic Technology Co ltd
Current assignee: Shenzhen Zhongke Electronic Technology Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-23
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses an anti-electromagnetic interference type microcomputer mainboard, which comprises a circuit board, shielding plate under the circuit board lower extreme fixedly connected with, circuit board upper end rear portion fixedly connected with a plurality of data transmission line, shielding device on the circuit board upper end rear portion fixedly connected with, go up shielding device right-hand member middle part fixedly connected with earth connection, and the earth connection lower extreme runs through the circuit board lower extreme and extends to the circuit board below, circuit board upper end middle part fixedly connected with wave filter, the anterior fixedly connected with a plurality of mainboard electric capacity of circuit board upper end, circuit board upper end right part fixedly connected with heat dissipation chip, four anti-interference group of circuit board upper end right part fixedly connected with. A anti-electromagnetic interference type microcomputer mainboard, through setting up shield assembly and anti-interference group, can effectively shield space interference signal, keep apart data line and space interference signal, keep data transmission's stability.

Description

Anti-electromagnetic interference type small computer mainboard

Technical Field

The utility model relates to a computer motherboard field, in particular to anti-electromagnetic interference type microcomputer mainboard.

Background

The computer mainboard is the most important part in the computer, and it has installed main circuit system in the computer, also is the carrier that the treater was placed, and the mainboard is equivalent to human brain, and the information processing performance of mainboard has directly decided the performance of computer, and a current computer mainboard has following drawback: 1. because the mainboard is provided with a plurality of data transmission lines, the host can generate a plurality of interference signals under the high-frequency work, and the existing mainboard can not shield the interference signals, so that the transmission lines can not output the signals, and the normal work of the mainboard is seriously influenced; 2. because install the chip in the mainboard, under high frequency work, can produce a large amount of heats in the mainboard, and the unable quick discharge of these heats, high temperature can make the electric capacity component in the mainboard inefficacy, can not normally shield interference signal for the anti-electromagnetic energy power of mainboard descends.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an anti-electromagnetic interference type small computer motherboard, which can effectively solve the problems in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an anti-electromagnetic interference type microcomputer mainboard, includes the circuit board, shielding plate under the circuit board lower extreme fixedly connected with, a plurality of data transmission line of circuit board upper end rear portion fixedly connected with, shielding device on the circuit board upper end rear portion fixedly connected with, go up shielding device right-hand member middle part fixedly connected with earth connection, and the earth connection lower extreme runs through the circuit board lower extreme and extends to the circuit board below, circuit board upper end middle part fixedly connected with wave filter, the anterior fixedly connected with a plurality of mainboard electric capacity of circuit board upper end, circuit board upper end right part fixedly connected with heat dissipation chip, four anti-interference groups of circuit board upper end right part fixedly connected with.

Preferably, go up shield assembly and include the metal shielding frame, the equal fixedly connected with mainboard welding strip in metal shielding frame lower extreme left part and lower extreme right part, open metal shielding frame upper end has a plurality of thermovent, two mainboard welding strip lower extreme all welds at circuit board upper end rear portion.

Preferably, the metal shielding frame is located above the data transmission line, and the inner wall of the metal shielding frame is not in contact with the data transmission line.

Preferably, the heat dissipation chip includes the contact piece, the upper end fixedly connected with radiating fin of contact piece, contact piece lower extreme fixedly connected with silicone gum, the silicone gum lower extreme bonds there is the chip, the equal fixedly connected with mainboard leg, four of chip lower extreme left part and lower extreme right part the equal fixed connection of mainboard leg lower extreme is in circuit board upper end.

Preferably, the anti-interference wire set comprises a magnetic rod, the left end and the right end of the magnetic rod are fixedly connected with support columns and two mainboard welding spots, the lower ends of the support columns are fixedly connected with mainboard welding spots, the outer surface of the magnetic rod is fixedly and alternately connected with an electromagnetic coil, and the lower ends of the mainboard welding spots are fixedly connected to the upper end of a circuit board.

Preferably, the height of the upper side of the outer surface of the magnetic rod is lower than the height of the upper end of the radiating fin, the four anti-interference lines are distributed in a square shape, and the four anti-interference lines are not in contact with the chip.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses in, through setting up shield assembly and anti-interference group, can reduce the interference of high frequency signal in the host computer to the mainboard, set up in data transmission line's top and set up the metal shield frame, carry out ground connection with metal shield frame and quick-witted case, can keep apart data line and space interference signal well, have different impedance special animals under the frequency of difference.

2. The utility model discloses in, through setting up heat dissipation chip, there are radiating fin and contact piece in the top of chip through the silicone adhesive joint, during the heat conduction that the contact piece produced the chip conducted radiating fin, radiating fin had increased the area of contact with the air to reduce the heat of chip fast, avoid high temperature environment to lead to the electric capacity component to become invalid, improved the interference immunity of mainboard.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an anti-EMI miniature computer motherboard according to the present invention;

FIG. 2 is a schematic diagram of the overall structure of the upper shielding device of the anti-EMI miniature computer motherboard according to the present invention;

FIG. 3 is a schematic diagram of the overall structure of a heat dissipation chip of the anti-EMI miniature computer motherboard according to the present invention;

fig. 4 is the overall structure diagram of the anti-interference wire set of the anti-electromagnetic interference type microcomputer motherboard.

In the figure: 1. a circuit board; 2. a lower shield plate; 3. a main board capacitor; 4. a filter; 5. an upper shielding device; 6. a data transmission line; 7. a heat dissipation chip; 8. a ground line; 9. an anti-interference wire set; 51. a metal shielding frame; 52. a heat dissipation port; 53. welding strips for the main board; 71. a contact piece; 72. silicone gum; 73. a heat dissipating fin; 74. a chip; 75. welding feet of the main board; 91. a magnetic rod; 92. a support pillar; 93. welding spots of the main board; 94. an electromagnetic coil.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, an anti-electromagnetic interference type small computer motherboard comprises a circuit board 1, a lower end of the circuit board 1 is fixedly connected with a lower shielding plate 2, a plurality of data transmission lines 6 are fixedly connected to the rear part of the upper end of the circuit board 1, an upper shielding device 5 is fixedly connected to the rear part of the upper end of the circuit board 1, a grounding wire 8 is fixedly connected to the middle part of the right end of the upper shielding device 5, the lower end of the grounding wire 8 penetrates through the lower end of the circuit board 1 and extends to the lower part of the circuit board 1, a filter 4 is fixedly connected to the middle part of the upper end of the circuit board 1, a plurality of motherboard capacitors 3 are fixedly connected to the front part of the upper end of the circuit board 1, a heat dissipation chip 7 is fixedly connected to the right part of the upper end of the circuit board 1, and four anti-interference wire groups 9 are fixedly connected to the right part of the upper end of the circuit board 1.

The upper shielding device 5 comprises a metal shielding frame 51, the left part of the lower end of the metal shielding frame 51 and the right part of the lower end of the metal shielding frame 51 are fixedly connected with mainboard welding strips 53, so that the metal shielding frame 51 can be stably welded at the upper end of the circuit board 1, the upper end of the metal shielding frame 51 is provided with a plurality of heat dissipation ports 52, the heat in the metal shielding frame 51 can be quickly discharged, the lower ends of the two mainboard welding strips 53 are welded at the rear part of the upper end of the circuit board 1, the metal shielding frame 51 is positioned above the data transmission line 6, the inner wall of the metal shielding frame 51 is not contacted with the data transmission line 6, the heat dissipation chip 7 comprises a contact sheet 71, the upper end of the contact sheet 71 is fixedly connected with a heat dissipation fin 73, the contact area between the chip 74 and the air is increased, the lower end of the contact sheet 71 is fixedly connected with a silicone rubber 72, the chip 71 can be stably connected on the surface of the chip 74, the lower end of the silicone rubber 72 is bonded with the chip 74, the chip 74 is bonded with the contact sheet 74, the left part of the lower end and the right part of the lower end of the chip 74 are fixedly connected with mainboard welding feet 75, four equal fixed connection of mainboard leg 75 lower extremes are in 1 upper end of circuit board, anti-interference group 9 includes magnetic pole 91, the equal fixedly connected with support column 92 of magnetic pole 91 left end and right-hand member, the equal fixedly connected with mainboard solder joint 93 of two support column 92 lower extremes, the outer fixed surface of magnetic pole 91 alternates and is connected with solenoid 94, can effectively shield external interference signal, the equal fixed connection of two mainboard solder joint 93 lower extremes is in 1 upper end of circuit board, the height that highly is less than radiating fin 73 upper end of magnetic pole 91 surface upside, four anti-interference group 9 become a mouthful style of calligraphy and distribute, make the signal of chip 74 spread smoothly, four anti-interference group 9 all do not contact with chip 74.

It should be noted that the utility model relates to an anti-electromagnetic interference type small computer motherboard, through setting up lower shield plate 2 and upper shield device 5, can shield the upper and lower both sides of circuit board 1, reduce the entering of space interference signal, metal shield frame 51 is welded in the both sides of data transmission line 6 through mainboard welding strip 53, use the surface effect principle of electrostatic field, namely cover a layer of metal film with the surface of data transmission line 6, and connect metal shield frame 51 with earth connection 8, make earth connection 8 contact with the machine case outside, thus keep apart space interference signal, set up a plurality of thermovents 52 on metal shield frame 51, can discharge the inside heat of metal shield frame 51, through setting up filter 4, can effectively filter the frequency point of specific frequency in the power cord or the frequency beyond this frequency point, obtain a power signal of specific frequency, make data transmission line 6 transmission data can not receive the interference, connect contact piece 71 through silicone adhesive 72 on chip 74, make contact piece 71 be difficult for separating with chip 74, contact piece 71 with the heat transfer in the chip 74 to among the radiating fin 73, increased with the area of contact of air, accelerate the heat dissipation, be provided with four anti-interference group 9 around chip 74, be equivalent to at chip 74 add four signal shielding pipes all around, make outside interfering signal can not disturb chip 74, can make chip 74's signal transmit smoothly simultaneously.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an anti-electromagnetic interference type small computer mainboard, includes circuit board (1), its characterized in that: circuit board (1) lower extreme fixedly connected with lower shield plate (2), a plurality of data transmission line (6) of circuit board (1) upper end rear portion fixedly connected with, shield assembly (5) on circuit board (1) upper end rear portion fixedly connected with, go up shield assembly (5) right-hand member middle part fixedly connected with earth connection (8), and earth connection (8) lower extreme runs through circuit board (1) lower extreme and extends to circuit board (1) below, circuit board (1) upper end middle part fixedly connected with wave filter (4), the anterior fixedly connected with a plurality of mainboard electric capacity (3) of circuit board (1) upper end, circuit board (1) upper end right part fixedly connected with heat dissipation chip (7), four anti-interference group (9) of circuit board (1) upper end right part fixedly connected with.

2. The small computer mainboard of claim 1, wherein: go up shield assembly (5) and include metallic shield frame (51), metallic shield frame (51) lower extreme left part and the equal fixedly connected with mainboard welding strip (53) of lower extreme right part, open metallic shield frame (51) upper end has a plurality of thermovent (52), two mainboard welding strip (53) lower extreme all welds at circuit board (1) upper end rear portion.

3. The small computer mainboard of claim 2, wherein: the metal shielding frame (51) is positioned above the data transmission line (6) and the inner wall of the metal shielding frame (51) is not contacted with the data transmission line (6).

4. The small computer mainboard of claim 1, wherein: heat dissipation chip (7) are including contact piece (71), contact piece (71) upper end fixedly connected with radiating fin (73), contact piece (71) lower extreme fixedly connected with silicone gum (72), the bonding of silicone gum (72) lower extreme has chip (74), the equal fixedly connected with mainboard leg (75) in chip (74) lower extreme left part and lower extreme right part, four the equal fixed connection of mainboard leg (75) lower extreme is in circuit board (1) upper end.

5. The small computer mainboard of claim 1, wherein: anti-interference group (9) are including magnetic pole (91), the equal fixedly connected with support column (92) of magnetic pole (91) left end and right-hand member, two the equal fixedly connected with mainboard solder joint (93) of support column (92) lower extreme, magnetic pole (91) surface fixity alternates and is connected with solenoid (94), two the equal fixed connection of mainboard solder joint (93) lower extreme is in circuit board (1) upper end.

6. The small computer mainboard of claim 5, wherein: the height of the upper side of the outer surface of the magnetic rod (91) is lower than the height of the upper end of the heat dissipation fin (73), the four anti-interference wire groups (9) are distributed in a square shape, and the four anti-interference wire groups (9) are not in contact with the chip (74).