CN206323645U - A kind of PCB multilayer board for preventing layer from offseting - Google Patents
A kind of PCB multilayer board for preventing layer from offseting Download PDFInfo
- Publication number
- CN206323645U CN206323645U CN201720040535.0U CN201720040535U CN206323645U CN 206323645 U CN206323645 U CN 206323645U CN 201720040535 U CN201720040535 U CN 201720040535U CN 206323645 U CN206323645 U CN 206323645U
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- CN
- China
- Prior art keywords
- circuit board
- projection
- layer circuit
- offseting
- inner layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Structure Of Printed Boards (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
The utility model discloses a kind of PCB multilayer board for preventing layer from offseting, including substrate and the circuit board group being fixed in substrate, the circuit board group includes a top layer circuit board successively from top to bottom, one inner layer circuit board and an earthed circuit plate, the top layer circuit board sets the first projection close to the side of inner layer circuit board, the first groove coordinated with the first projection is set on inner layer circuit board, first projection is fixed with the first projection, earthed circuit plate sets the second projection close to the side of inner layer circuit board, the second groove coordinated with the second projection is set on inner layer circuit board, second projection is connected together with the second groove.By the position that is fixed between each circuit board of the present utility model, prevent that layer from offseting, contraposition is accurate, assembling and dismounting are simple, have broken traditional assembling mode；Insulation protective jacket is set on the outside of screw, interference can be reduced and worn and torn.
Description
Technical field
The utility model is related to PCB multilayer board, more particularly to a kind of PCB multilayer board for preventing layer from offseting.
Background technology
As continuing to develop for surface mounting technique (SMT), and the continuous of surface mount device (SMD) of new generation push away
Go out, such as QFP, QFN, CSP, BGA (particularly MBGA), make that electronic product is more intelligent, miniaturization, thus promoted printing electricity
The major reform and progress of road plate (PCB) industrial technology.Printed circuit board (PCB) (PCB) as the various electronic devices such as chip load
Body, the just direction towards high density, high speed, low-power consumption, the environmental protection of low cost develop.
When designing multilayer PCB circuit board, it is necessary to according to the scale of circuit, the size of circuit board and Electro Magnetic Compatibility
(EMC) requirement determines used circuit board structure, that is, determines the circuit using 6 layers, 8 layers or higher number
Plate.After the number of plies is determined, then determine the position of internal planes placement and how different signals are distributed on these layers, this is multilayer
The design problem of PCB layer stack structure, the stepped construction is to influence the key factor of pcb board EMC performances, while being also to suppress electromagnetism
One important technical of interference, because if multilayer PCB circuit board EMC less than optimal performance is good, or electromagnetic interference is big,
The transmission of signal will be badly influenced, that, which does not house to doubt, will cause the performance of electronic product drastically to decline！
PCB multilayer board of the prior art easily causes the skew between PCB multilayer board in design and assembly, so as to make
Disturb into short circuit or each other.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art there is provided a kind of PCB multilayer board for preventing layer from offseting,
Contraposition is accurate, prevents from offseting and interferes.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of PCB multilayer board for preventing layer from offseting, including substrate and the circuit board group that is fixed in substrate, the circuit board
Group includes a top layer circuit board, an inner layer circuit board and an earthed circuit plate successively from top to bottom, and the top layer circuit board is close
The side of inner layer circuit board sets the first groove for setting and coordinating with the first projection on the first projection, inner layer circuit board, and first is convex
Block is fixed with the first projection, and earthed circuit plate is set on the second projection, inner layer circuit board close to the side of inner layer circuit board
The second groove coordinated with the second projection is set, and the second projection is connected together with the second groove.
As preferred embodiment of the present utility model, at least provided with four first on top layer circuit board described in the utility model
At least provided with four the second projections on projection, the earthed circuit plate, set and the first projection, the second projection on inner layer circuit board
Corresponding first groove in position and the second groove.
As preferred embodiment of the present utility model, set on substrate described in the utility model on through hole, top layer circuit board
Counterbore corresponding with lead to the hole site is set, and through hole on counterbore with fixing a screw, and substrate is fixed with top layer circuit board by screw
Connection.
As preferred embodiment of the present utility model, screw described in the utility model includes nut and is arranged at below nut
And with the integrally formed screw rod of nut, the screw rod is made up of non-threaded section and thread segment.
As preferred embodiment of the present utility model, non-threaded section described in the utility model of outside is set with an insulation protection
Set.
As preferred embodiment of the present utility model, screw described in the utility model is sunk screw.
It is used as preferred embodiment of the present utility model, top layer circuit board described in the utility model, inner layer circuit board and ground connection
The corresponding heat emission hole of set location on circuit board.
Compared with prior art, the beneficial effects of the utility model are：Set convex on top layer circuit board and earthed circuit plate
Set on block, inner layer circuit board between the groove coordinated with projection, each circuit board of circuit board group by the position that is fixed,
Prevent that layer from offseting, contraposition is accurate；After the contraposition of each circuit board group, strengthen fastness, spiral shell only is passed through to pedestal and top layer circuit board
Nail is fixed, and traditional PCB multilayer board also needs to all fix by screw, on the one hand reduces the depth and quantity of punching,
On the other hand interference can be effectively reduced, and by engaging, assembling and dismounting are simple, have broken traditional assembling mode；Outside screw
Side sets insulation protective jacket, can reduce interference and wear and tear.
Brief description of the drawings
Fig. 1 is overall structure sectional view of the present utility model；
Fig. 2 is Fig. 1 of the present utility model A portions enlarged diagram；
Fig. 3 is top layer board structure of circuit schematic diagram of the present utility model；
Fig. 4 is internal layer circuit plate structure schematic diagram of the present utility model；
Fig. 5 is earthed circuit plate structure schematic diagram of the present utility model；
Fig. 6 is bolt structure schematic diagram of the present utility model；
Fig. 7 is overall structure schematic top plan view of the present utility model；
Fig. 8 is inner layer circuit board structure schematic top plan view of the present utility model；.
Embodiment
It is described in detail referring to the drawings with reference to embodiment, to enter to technical characteristic of the present utility model and advantage
Row deeper into annotation.
As Figure 1-5, a kind of PCB multilayer board for preventing layer from offseting, including substrate 1 and the circuit that is fixed in substrate 1
Plate group, the circuit board group includes a top layer circuit board 2, an inner layer circuit board 3 and an earthed circuit plate 4 successively from top to bottom,
The top layer circuit board 2 sets the first projection 21 close to the side of inner layer circuit board 3, sets on inner layer circuit board 3 and first is convex
The first groove 31 that block 21 coordinates, the first projection 21 is fixed with the first projection 21, and earthed circuit plate 4 is close to inner layer circuit board
3 side sets the second groove 32 for setting and coordinating with the second projection 41 on the second projection 41, inner layer circuit board 3, the second projection
41 are connected together with the second groove 32.As shown in figure 3, at least provided with four the first projections 21, both sides on the top layer circuit board 2
Two the first projections 21 are respectively set, by that at least provided with 4 projections, can stablize and engage, strengthen steadiness.As shown in Fig. 4,8,
The groove 32 of first groove 31 and second corresponding with the first projection 21, the position of the second projection 41 is set on inner layer circuit board 3, i.e., on
Surface is at least provided with 4 the first grooves 31, and lower surface is with earthed circuit plate close to side at least provided with 4 the second grooves 32.Such as Fig. 5
It is shown, at least provided with four the second projections 41 on the earthed circuit plate 4, it is fixed with the second groove 32.Top layer circuit board
And the groove for setting and coordinating with projection on projection, inner layer circuit board, each circuit board of circuit board group are set on earthed circuit plate
Between by the position that is fixed, prevent that layer from offseting, contraposition is accurate.
After the contraposition of each circuit board group, in order to strengthen fastness, only pedestal and top layer circuit board are fixed by screw, and
Traditional PCB multilayer board also needs to all fixed by screw.Specifically as shown in figure 1, being set on substrate 1 described in the utility model
Counterbore corresponding with lead to the hole site is set on through hole, top layer circuit board 2, and through hole is with fixing a screw 5, substrate 1 and top on counterbore
Layer circuit board 2 is fixedly connected by screw 5.Counterbore on top layer circuit board 2 only bores general 1/3rd depth, and pedestal is drilled through
Hole, through hole and counterbore consistency from top to bottom, are fixed by screw 5.Compared with prior art, the depth and number of punching are on the one hand reduced
Amount, on the other hand can effectively reduce interference, and by engaging, assembling and dismounting are simple, have broken traditional assembling mode.
As shown in fig. 6, screw 5 described in the utility model include nut 51 and be arranged at the lower section of nut 51 and with nut 51 1
Body formed screw rod, the screw rod is made up of non-threaded section 52 and thread segment 53.By being threaded section 53, stabilization can be strengthened
Property.Described non-threaded section 52 of outside is set with an insulation protective jacket 7, strengthens anti-interference.In order to keep overall appearance clean and tidy, subtract
Few burr, the screw 5 is sunk screw.
As shown in fig. 7, set location dissipates accordingly on the top layer circuit board 2, inner layer circuit board 3 and earthed circuit plate 4
Hot hole 6.The heat that PCB multilayer board is distributed when working is shed in time by heat emission hole 6, is increased the service life.
Operation principle of the present utility model is as follows：Groove on top layer circuit board 2, inner layer circuit board 3 and earthed circuit plate 4
It is fixed with after projection contraposition, on pedestal 1, pedestal 1 and top layer circuit board 2 are consolidated by screw 5 and top layer circuit board 2
Fixed connection, after start-up operation, the heat of generation sheds from heat emission hole 6, and quick heat radiating increases the service life.
Clear, complete description is carried out to the utility model by the technical scheme in above example, it is clear that described
Embodiment be the embodiment of the utility model part, rather than whole embodiment.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Claims (7)
1. a kind of PCB multilayer board for preventing layer from offseting, it is characterised in that：Including substrate (1) and the circuit being fixed in substrate (1)
Plate group, the circuit board group includes a top layer circuit board (2), an inner layer circuit board (3) and an earthed circuit successively from top to bottom
Plate (4), the top layer circuit board (2) sets the first projection (21), inner layer circuit board (3) close to the side of inner layer circuit board (3)
The first groove (31) that upper setting coordinates with the first projection (21), the first projection (21) is fixed with the first projection (21), connect
Ground circuit board (4) set close to the side of inner layer circuit board (3) and set and second on the second projection (41), inner layer circuit board (3)
The second groove (32) that projection (41) coordinates, the second projection (41) is connected together with the second groove (32).
2. the PCB multilayer board according to claim 1 for preventing layer from offseting, it is characterised in that：On the top layer circuit board (2)
At least provided with four the first projections (21), at least provided with four the second projections (41), internal layer circuit on the earthed circuit plate (4)
The first groove (31) corresponding with the first projection (21), the second projection (41) position and the second groove (32) are set on plate (3).
3. the PCB multilayer board according to claim 1 for preventing layer from offseting, it is characterised in that：Set on the substrate (1) logical
Counterbore corresponding with lead to the hole site is set on hole, top layer circuit board (2), and through hole on counterbore with fixing a screw (5), substrate (1)
It is fixedly connected with top layer circuit board (2) by screw (5).
4. the PCB multilayer board according to claim 3 for preventing layer from offseting, it is characterised in that：The screw (5) includes nut
(51) and be arranged at below nut (51) and with nut (51) integrally formed screw rod, the screw rod is by non-threaded section (52) and spiral shell
Line section (53) composition.
5. the PCB multilayer board according to claim 4 for preventing layer from offseting, it is characterised in that：Non-threaded section (52)
Outside is set with an insulation protective jacket (7).
6. the PCB multilayer board that layer is offset of preventing according to claim 3 or 4, it is characterised in that：The screw (5) is heavy
Head screw.
7. the PCB multilayer board according to claim 1 for preventing layer from offseting, it is characterised in that：The top layer circuit board (2),
The corresponding heat emission hole of set location (6) on inner layer circuit board (3) and earthed circuit plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720040535.0U CN206323645U (en) | 2017-01-13 | 2017-01-13 | A kind of PCB multilayer board for preventing layer from offseting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720040535.0U CN206323645U (en) | 2017-01-13 | 2017-01-13 | A kind of PCB multilayer board for preventing layer from offseting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206323645U true CN206323645U (en) | 2017-07-11 |
Family
ID=59261026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720040535.0U Expired - Fee Related CN206323645U (en) | 2017-01-13 | 2017-01-13 | A kind of PCB multilayer board for preventing layer from offseting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206323645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343356A (en) * | 2017-08-17 | 2017-11-10 | 成都富升电子科技有限公司 | Anti- displacement Multi-layer circuit board structure |
| CN111831023A (en) * | 2020-08-03 | 2020-10-27 | 上海航天控制技术研究所 | Control moment gyro controller |
-
2017
- 2017-01-13 CN CN201720040535.0U patent/CN206323645U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343356A (en) * | 2017-08-17 | 2017-11-10 | 成都富升电子科技有限公司 | Anti- displacement Multi-layer circuit board structure |
| CN111831023A (en) * | 2020-08-03 | 2020-10-27 | 上海航天控制技术研究所 | Control moment gyro controller |
| CN111831023B (en) * | 2020-08-03 | 2021-10-29 | 上海航天控制技术研究所 | Control moment gyro controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20220113 |