CN220043758U - Combined circuit board and electronic equipment - Google Patents
Combined circuit board and electronic equipment Download PDFInfo
- Publication number
- CN220043758U CN220043758U CN202223552184.1U CN202223552184U CN220043758U CN 220043758 U CN220043758 U CN 220043758U CN 202223552184 U CN202223552184 U CN 202223552184U CN 220043758 U CN220043758 U CN 220043758U
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- circuit board
- connectors
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- combined
- signal transmission
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- 230000008054 signal transmission Effects 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims description 16
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- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Combinations Of Printed Boards (AREA)
Abstract
The utility model provides a combined circuit board, a connector and electronic equipment, and relates to the technical field of electronic circuits. A combination circuit board comprising: the circuit board comprises a first circuit board, a second circuit board and two connectors, wherein each connector is used for connecting the first circuit board and the second circuit board, the first circuit board and the second circuit board are used for signal transmission through the two connectors, the connection positions of the different connectors with the first circuit board and the second circuit board are different, and the two connectors are oppositely arranged on two sides of the first circuit board. According to the scheme, the return paths of noise signals between the first circuit board and the second circuit board are increased, the ground return speed of the noise signals in the two circuit boards is improved, and the effects of reducing the noise radiated to the air by the combined circuit board and reducing electromagnetic interference formed by the combined circuit board are achieved.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to a combined circuit board, a connector, and an electronic device.
Background
The combined circuit board provides convenience for the modularized development of the electronic equipment, and any split circuit board in the combined circuit board can be independently replaced or debugged without influencing the hardware performance of other circuit boards, so that the combined circuit board is widely used in current electronic products. However, the electromagnetic environment of the whole device becomes more complex due to the split design of the combined circuit board, and electromagnetic noise is more easily generated and electromagnetic interference is formed.
Disclosure of Invention
The utility model provides a combined circuit board, a connector and electronic equipment, which are used for solving the problems that the traditional combined circuit board is easy to generate electromagnetic noise and has electromagnetic interference.
In a first aspect, the present utility model provides a combination circuit board comprising: the circuit board comprises a first circuit board, a second circuit board and two connectors, wherein each connector is arranged between the first circuit board and the second circuit board respectively, each connector is connected with the first circuit board and the second circuit board respectively, signal transmission is carried out between the first circuit board and the second circuit board through two connectors, and positions of different connectors connected with the first circuit board and the second circuit board are different, and the two connectors are oppositely arranged on two sides of the first circuit board.
In the embodiment of the utility model, the two connectors are oppositely arranged at the two sides of the first circuit board, so that the return paths of noise signals between the first circuit board and the second circuit board are increased, the ground return speed of the noise signals in the first circuit board and the second circuit board can be improved, and the effects of reducing the noise radiated into the air by the first circuit board and the second circuit board and reducing the electromagnetic interference formed by the combined circuit board are realized.
With reference to the foregoing technical solution of the first aspect, in some possible implementation manners, two connectors are symmetrically disposed based on a center point of the first circuit board.
According to the embodiment of the utility model, the two connectors are symmetrically arranged based on the center point of the first circuit board, so that the distance from any point on the first circuit board to the connector closest to the connector is uniform, the noise signal of any point on the first circuit board can be guaranteed to flow back to the ground through one of the connectors, and the noise radiated to the air by the first circuit board is further reduced.
With reference to the foregoing technical solution provided in the first aspect, in some possible implementation manners, the combined circuit board further includes: the conductive piece is arranged between the first circuit board and the second circuit board and is respectively connected with the grounding point of the first circuit board and the grounding point of the second circuit board.
In the embodiment of the utility model, the conductive piece is respectively connected with the grounding point of the first circuit board and the grounding point of the second circuit board, so that the first circuit board and the second circuit board can be grounded through the conductive piece, the grounding performance of the combined circuit board is improved, the floating electrostatic capacity between the first circuit board and the second circuit board can be reduced, the condition that resonance and common mode noise are formed by the first circuit board and the second circuit board are destroyed is realized, and the electromagnetic interference formed by the combined circuit board is reduced.
With reference to the foregoing technical solution of the first aspect, in some possible implementation manners, the conductive member is conductive foam.
In the embodiment of the utility model, the conductive foam has good conductivity, and after being connected with the grounding point of the first circuit board and the grounding point of the second circuit board, the grounding performance of the first circuit board and the second circuit board can be improved. Meanwhile, the conductive foam is easy and convenient to install, and the installation difficulty of the conductive piece can be effectively reduced, so that the cost of the conductive piece is reduced.
With reference to the foregoing technical solution provided by the first aspect, in some possible implementation manners, the connector includes: the signal transmission line is respectively connected with the first circuit board and the second circuit board; the metal shell completely wraps the signal transmission line, and the metal shell is connected with the first circuit board and the second circuit board in a grounding mode.
In the embodiment of the utility model, the signal transmission line is wrapped by the metal shell, so that the connector can be prevented from radiating noise to the outside when the signal is transmitted through the connector.
In a second aspect, the present utility model provides a connector comprising: the signal transmission line is respectively connected with the first circuit board and the second circuit board in the combined circuit board; the metal shell completely wraps the signal transmission line, and the metal shell is connected with the first circuit board and the second circuit board in a grounding mode.
In a third aspect, the present utility model provides an electronic device comprising: main part, combination circuit board, the combination circuit board set up in on the main part, the combination circuit board includes: the circuit board comprises a first circuit board, a second circuit board and two connectors, wherein each connector is arranged between the first circuit board and the second circuit board respectively, each connector is connected with the first circuit board and the second circuit board respectively, signal transmission is carried out between the first circuit board and the second circuit board through two connectors, and positions of connection of different connectors with the first circuit board and the second circuit board are different, and the two connectors are oppositely arranged on two sides of the first circuit board.
With reference to the foregoing third aspect, in some possible implementations, the two connectors are symmetrically disposed based on a center point of the first circuit board.
With reference to the foregoing technical solutions of the third aspect, in some possible implementation manners, the combined circuit board further includes: the conductive piece is arranged between the first circuit board and the second circuit board and is respectively connected with the grounding point of the first circuit board and the grounding point of the second circuit board.
With reference to the foregoing technical solution of the third aspect, in some possible embodiments, the conductive member is conductive foam.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a conventional combined circuit board according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a combined circuit board according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a combined circuit board according to another embodiment of the present utility model;
FIG. 4 is a schematic view of a connector according to an embodiment of the present utility model;
fig. 5 is a block diagram of an electronic device according to an embodiment of the present utility model.
Reference numerals: 210-a sub-circuit board; 220-a mother circuit board; 230-prior art connectors; 10-an electronic device; 100-a combined circuit board; 110-a first circuit board; 120-a second circuit board; 130-connectors; 131-signal transmission lines; 132-a metal housing; 140-conductive members; 200-body.
Detailed Description
The terms "first," "second," and the like are used merely for distinguishing between descriptions and not necessarily for indicating a sequential order, nor are they to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.
The technical scheme of the present utility model will be described in detail with reference to the accompanying drawings.
The structure shown in fig. 1 is that the conventional combined circuit board includes a sub-circuit board 210 and a mother circuit board 220, where a projection of the sub-circuit board 210 is located on the mother circuit board 220, and a gap exists between the sub-circuit board 210 and the mother circuit board 220. For ease of understanding, please refer to fig. 1.
The present inventors have found that the scheme shown in fig. 1 is prone to problems of electromagnetic interference because the distributed inductance of the transmission lines in the connector 230 and the sub-circuit board 210 of the related art, and the floating capacitance between the sub-circuit board 210 and the mother circuit board 220 form an LC resonant circuit, which easily induces circuit resonance, and emits noise as an antenna through the sub-circuit board 210.
The present inventors have found that this problem can be solved by increasing the ground return speed of noise signals in the daughter circuit board 210 and the mother circuit board 220, and based on this, an embodiment of the present utility model provides a combined circuit board as shown in fig. 2.
Fig. 2 is a schematic structural diagram of a combined circuit board according to an embodiment of the present utility model, where the combined circuit board includes a first circuit board 110, a second circuit board 120, and two connectors 130.
The projection of the first circuit board 110 is located on the second circuit board 120, and the first circuit board 110 and the second circuit board 120 are spaced apart.
Each connector 130 is disposed between the first circuit board 110 and the second circuit board 120, and each connector 130 is connected with the first circuit board 110 and the second circuit board 120, and signal transmission is performed between the first circuit board 110 and the second circuit board 120 through two connectors 130, wherein positions of connection between different connectors 130 and the first circuit board 110 and positions of connection between different connectors 130 and the second circuit board 120 are different, and the two connectors 130 are disposed on two sides of the first circuit board 110.
A connector 130 may be disposed on a first side near the first circuit board 110 and a second side near the first circuit board 110, respectively, to increase a return path of noise signals between the first circuit board 110 and the second circuit board 120, so as to increase a speed of ground return of noise signals in the first circuit board 110 and the second circuit board 120, thereby achieving an effect of reducing noise radiated into the air by the first circuit board 110 and the second circuit board 120, and reducing electromagnetic interference formed by the combined circuit boards.
It is understood that the first side of the first circuit board 110 is opposite to the second side of the first circuit board 110, for example, when the first side of the first circuit board 110 is the left side of the first circuit board 110, the second side of the first circuit board 110 is the right side of the first circuit board 110; alternatively, when the first side of the first circuit board 110 is the front side of the first circuit board 110, the second side of the first circuit board 110 is the rear side of the first circuit board 110. The specific locations of the first side of the first circuit board 110 and the second side of the first circuit board 110 are not limited herein.
In order to ensure that noise signals at any one point on the first circuit board 110 may be reflowed to ground through one of the connectors 130, in one embodiment, the two connectors 130 are symmetrically arranged based on a center point of the first circuit board 110. By symmetrically arranging the two connectors 130 based on the center point of the first circuit board 110, the distance from any point on the first circuit board 110 to the connector 130 closest to the connector is relatively uniform, so that noise signals of any point on the first circuit board 110 can be guaranteed to flow back to the ground through one of the connectors 130, and noise radiated to the air by the first circuit board 110 is further reduced.
Alternatively, instead of arranging the two connectors 130 symmetrically based on the center point of the first circuit board 110, the two connectors 130 may be arranged symmetrically on the first circuit board 110 based on a target symmetry line, which may be a straight line passing through the center point of the first circuit board 110 and on the same plane as the surface of the first circuit board 110.
In one embodiment, in addition to the two connectors 130, more connectors may be disposed between the first circuit board 110 and the second circuit board 120, and each connector is used for connecting the first circuit board 110 and the second circuit board 120, where different connectors 130 are connected to the first circuit board 110 and the second circuit board 120.
It will be appreciated that the more connectors are provided, the more return paths for noise signals between the first circuit board 110 and the second circuit board 120, thereby enabling the faster the ground return of noise signals in the first circuit board 110 and the second circuit board 120.
For example, at least one connector may be provided between the first circuit board 110 and the second circuit board 120 in addition to the two connectors 130 described above, and at this time, the first circuit board 110 and the second circuit board 120 perform signal transmission through 3 connectors.
The number of connectors provided between the first circuit board 110 and the second circuit board 120 may be selected by a user according to actual needs, and the number of connectors provided between the first circuit board 110 and the second circuit board 120 is not limited herein.
Because there is often floating capacitance between the first circuit board 110 and the second circuit board 120, and because there is floating electricity, the combined circuit board may form resonance and common mode noise, and thus, in one embodiment, the combined circuit board may further include: the conductive member 140 is disposed between the first circuit board 110 and the second circuit board 120, and the conductive member 140 is connected to the ground point of the first circuit board 110 and the ground point of the second circuit board 120, respectively. For ease of understanding, please refer to fig. 3.
Because the conductive member 140 is respectively connected with the grounding point of the first circuit board 110 and the grounding point of the second circuit board 120, the first circuit board 110 and the second circuit board 120 can be grounded through the conductive member 140, so that the grounding performance of the combined circuit board is improved, the floating electrostatic capacity between the first circuit board 110 and the second circuit board 120 can be reduced, the condition that resonance and common mode noise are formed by the first circuit board 110 and the second circuit board 120 is destroyed is realized, and the electromagnetic interference formed by the combined circuit board is reduced.
The conductive element 140 may be any object having conductive capability, such as a wire, a metal block, a carbon rod, etc., and the specific choice of the conductive element 140 is not limited herein.
Alternatively, the conductive member 140 may be conductive foam. The conductive foam has good conductivity, and after being connected to the grounding point of the first circuit board 110 and the grounding point of the second circuit board 120, the grounding performance of the first circuit board 110 and the second circuit board 120 can be improved. Meanwhile, the conductive foam is easy and convenient to install, and can be installed only by bonding through adhesive materials such as adhesive tapes, so that the installation difficulty of the conductive piece 140 can be effectively reduced, and the cost of the conductive piece 140 is reduced. Meanwhile, the weight of the conductive foam is lighter, so that the weight of the combined circuit board cannot be increased excessively.
In one embodiment, the connector may be any type of data transmission line, and the inventor has found that the use of such a connector is prone to the occurrence of noise radiated from the connector to the outside, and based on this, it is possible to propose a new connector by modifying it.
In order to prevent noise from being radiated to the outside when the connector 130 transmits a signal, in one embodiment, refer to fig. 4. As shown in fig. 4, the connector 130 may include: a signal transmission line 131 and a metal housing 132, wherein the signal transmission line 131 is connected with the first circuit board 110 and the second circuit board 120 respectively; the metal housing 132 completely encloses the signal transmission line 131, and the metal housing 132 is connected to the ground of the first circuit board 110 and the second circuit board 120. The signal transmission line 131 is surrounded by the metal case 132, and noise is prevented from being radiated to the outside from the connector 130 when a signal is transmitted through the connector 130 due to electrostatic shielding. The connector 130 shown in fig. 4 is merely an example provided for ease of understanding and should not be construed as limiting the present utility model.
The metal casing may be made of metal or alloy such as iron, copper, gold, silver, steel, etc., as long as it can realize electrostatic shielding, and specific materials of the metal casing are not limited herein.
Referring to fig. 5, fig. 5 is a block diagram of an electronic device according to the present utility model, and the electronic device 10 includes a main body 200 and a combined circuit board 100.
Wherein, the combined circuit board 100 is disposed on the main body 200, and the combined circuit board 100 includes: the circuit board comprises a first circuit board, a second circuit board and two connectors, wherein each connector is arranged between the first circuit board and the second circuit board respectively, each connector is connected with the first circuit board and the second circuit board respectively, signal transmission is carried out between the first circuit board and the second circuit board through the two connectors, the connection positions of the different connectors and the first circuit board and the connection positions of the different connectors and the second circuit board are different, and the two connectors are oppositely arranged on two sides of the first circuit board. The main body 200 is a circuit board or a communication module.
In one embodiment, the two connectors are symmetrically arranged based on a center point of the first circuit board.
In one embodiment, the combined circuit board 100 may further include: the conductive piece is arranged between the first circuit board and the second circuit board and is respectively connected with the grounding point of the first circuit board and the grounding point of the second circuit board.
Alternatively, the conductive member may be conductive foam.
The specific implementation and principles of the combination circuit board 100 are already described above, and the non-described portion of this embodiment may refer to the description in the foregoing combination circuit board embodiment, which is not repeated herein for brevity.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. A combination circuit board, comprising:
a first circuit board;
a second circuit board;
two connectors, every the connector set up respectively in between the first circuit board with the second circuit board, and every the connector respectively with first circuit board with the second circuit board is connected, first circuit board with carry out signal transmission through two between the second circuit board, wherein, different connectors with first circuit board the position that the second circuit board is connected is different, two the connector set up relatively in the both sides of first circuit board.
2. The combination circuit board of claim 1, wherein two of said connectors are symmetrically disposed based on a center point of said first circuit board.
3. The combination circuit board of claim 1, further comprising:
the conductive piece is arranged between the first circuit board and the second circuit board and is respectively connected with the grounding point of the first circuit board and the grounding point of the second circuit board.
4. A combined circuit board according to claim 3, wherein the conductive member is conductive foam.
5. The combination circuit board of claim 1, wherein the connector comprises:
the signal transmission line is respectively connected with the first circuit board and the second circuit board;
the metal shell completely wraps the signal transmission line, and the metal shell is connected with the first circuit board and the second circuit board in a grounding mode.
6. An electronic device, comprising: main part and combination circuit board, the combination circuit board set up in on the main part, the combination circuit board includes:
a first circuit board;
a second circuit board;
two connectors, every the connector set up respectively in between the first circuit board with the second circuit board, and every the connector all respectively with first circuit board with the second circuit board is connected, first circuit board with carry out signal transmission through two between the second circuit board the connector, wherein, different connectors with first circuit board the position of second circuit board connection is different, two the connector set up relatively in the both sides of first circuit board.
7. The electronic device of claim 6, wherein two of the connectors are symmetrically disposed based on a center point of the first circuit board.
8. The electronic device of claim 6, wherein the combination circuit board further comprises:
the conductive piece is arranged between the first circuit board and the second circuit board and is respectively connected with the grounding point of the first circuit board and the grounding point of the second circuit board.
9. The electronic device of claim 8, wherein the conductive member is conductive foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223552184.1U CN220043758U (en) | 2022-12-29 | 2022-12-29 | Combined circuit board and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223552184.1U CN220043758U (en) | 2022-12-29 | 2022-12-29 | Combined circuit board and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220043758U true CN220043758U (en) | 2023-11-17 |
Family
ID=88734201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223552184.1U Active CN220043758U (en) | 2022-12-29 | 2022-12-29 | Combined circuit board and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220043758U (en) |
-
2022
- 2022-12-29 CN CN202223552184.1U patent/CN220043758U/en active Active
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