CN205179497U - Double -side circuit board with protective layer - Google Patents
Double -side circuit board with protective layer Download PDFInfo
- Publication number
- CN205179497U CN205179497U CN201520926782.1U CN201520926782U CN205179497U CN 205179497 U CN205179497 U CN 205179497U CN 201520926782 U CN201520926782 U CN 201520926782U CN 205179497 U CN205179497 U CN 205179497U
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- CN
- China
- Prior art keywords
- circuit
- protective layer
- double
- hole
- circuit board
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- 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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Abstract
The utility model relates to a circuit board. A double -side circuit board with protective layer, includes the circuit edition of books body and protective layer, and the tow sides of the circuit edition of books body all are equipped with the circuit, and the protective layer covers the circuit and the circuit edition of books body, and the circuit is equipped with and link up the plug -in components hole of the circuit edition of books body, the protective layer corresponds the position in plug -in components hole is equipped with the via hole, and the position that the circuit was equipped with the plug -in components hole exposes in the via hole, wears to be equipped with the tin cover in the plug -in components hole. The utility model provides a transmit the heat of giving components and parts through participating in of components and parts in the time of can reducing the welding, participate in and also can fix together with the plug -in components holes, can prevent the circuit from being destroyed and produce the double -side circuit board with protective layer of electrical accident, solved among the current circuit board welding process through participating in the heat that the transmission gave components and parts manyly, the joint strength of components and parts between with the circuit board is poor and the stress point is single and lead to electric contact failure of easy production and the easy impaired problem of circuit.
Description
Technical field
The utility model relates to circuit board, particularly relates to a kind of double-sided PCB being provided with protective layer.
Background technology
Circuit board is for fixing electronic devices and components and the plank be electrically connected in electrical equipment.China Patent No. be 2015203357241, Authorization Notice No. is CN204733458U, name is called in the patent document of " a kind of on-deformable printed circuit board (PCB) " and namely discloses a kind of circuit board.The basic structure of circuit board comprises circuit board body, and the surface of circuit board body is provided with circuit.Single-sided circuit board only arranges circuit in the side of circuit board body, and double-sided PCB then all arranges circuit in the both side surface of circuit board body.In order to the pin of supplied for electronic components and parts inserts, as China Patent No. be 2011200082107, Authorization Notice No. is CN201947534U, name to be called in the patent document of " a kind of high after footpath than multilayer board " namely disclosed, need to arrange the through insert hole to circuit board body on the line.During use, the pin of components and parts is inserted from one end away from circuit of insert hole, then by scolding tin, pin is welded together with circuit.
Existing circuit has the following disadvantages: the heat produced during welding can pass to components and parts along the pin of components and parts in large quantities, easily causes components and parts quality to decline; The part that pin can not be positioned at insert hole during welding is fixed together with insert hole, thus causes the bonding strength between components and parts and circuit poor; Components and parts extracted power time, stress point is all positioned at the junction of pin with circuit, easily produces electrical connection bad phenomenon; Circuit is easily damaged and produces electric fault.
Utility model content
The utility model provide a kind of when can reduce welding through the pin of components and parts pass to the heat of components and parts, pin also can be fixed together with insert hole, circuit can be prevented to be destroyed and to produce the double-sided PCB being provided with protective layer of electric fault, solve in existing welding circuit board process and pass to that the heat of components and parts is many through pin, components and parts are with the bonding strength difference between circuit board and stress point is single and easy generation electrical contact that is that cause is bad and the easy impaired problem of circuit.
Above technical problem is solved by following technical proposal: a kind of double-sided PCB being provided with protective layer; comprise circuit board body; the tow sides of described circuit board body are all provided with circuit; described circuit is provided with the insert hole of through described circuit board body; it is characterized in that; also comprise the protective layer covering described circuit and circuit board body; the position of the corresponding described insert hole of described protective layer is provided with via hole; the position that described circuit is provided with described insert hole is exposed to described via hole, is equipped with tin cover in described insert hole.During use, the pin of components and parts is inserted from one end away from circuit of insert hole, then by tin soldering machine, pin is welded together with circuit, heat in welding process is absorbed by tin cover when the pin of components and parts conducts, the heat passing to components and parts is reduced, thus reduces the impact on components and parts.Tin cover absorbs heat and melts, and after fusing, the part that pin is positioned at circuit with insert hole is also welded together to form inner solder joint, and internal welding point plays the effect of the bonding strength improved between components and parts and circuit; The formation of inner solder joint can be played when extracting components and parts, and auxiliary pin carries out stressed with the junction of circuit, to reduce the probability producing electrical connection bad phenomenon.Owing to being provided with protective layer, therefore circuit and circuit board body are not easy to be damaged.
As preferably, be provided with some copper pins in the wall of described tin cover, the circumference distribution that described copper pin overlaps along tin axially extends, and described copper pin is exposed to described tin cover near one end of described circuit.The efficiency that tin cover imports heat can be improved, tin cover in welding process can be more reliably melted.
As preferably, described copper pin is connected to together with described circuit.Reliability when heat conduction is overlapped to tin can be improved further.
As preferably, be provided with guide ring in described insert hole, described tin overlaps between described guide ring and circuit, and the inner peripheral surface of described guide ring is the conical surface that the little outer diameter of inner diameter is large.Convenient when components and parts can be made to insert, can prevent again manually being undertaken in the process of welding by soldering gun, outflow and pin can not being welded together with circuit board body after the fusing of tin cover.Note: during human weld, components and parts are in the below of circuit board is the top that components and parts are positioned at circuit board when tin soldering machine welds.
As preferably, be interference fit between described guide ring and insert hole.Can easily and effectively prevent guide ring from deviating from from insert hole.
As preferably, described guide ring is provided with the flexible retaining pin preventing the pin of the electric elements be plugged in insert hole from extracting from the one end away from circuit.When inserting pin, pin makes retaining pin open and produces and dodge.Resistance when then the increase of retaining pin is extracted when extracting, thus make pin be not easy to be pulled out, play the effect improving electrical connection reliability.
As preferably, described retaining pin is arranged at the inner face of described guide ring.Can tin overlap aperture less time carry out layout, improve convenience during circuit-board laying-out.
As preferably, described retaining pin is positioned on the same conical surface along the medial surface of the radial direction of guide ring and the inner peripheral surface of described guide ring.Easy to make, compact conformation.
As preferably, described circuit board body is provided with deposits hole, described protective layer be provided be contained in described in deposit connector in hole.The connection reliability of protective layer can be improved.
As preferably, described in deposit the inner aperture area large outer end opening area in hole little, deposit in hole described in described connector is connected to.Connection reliability is better.
The utility model has following advantage: the heat in welding process can be absorbed by tin cover when the pin of components and parts conducts, the heat passing to components and parts is reduced, thus reduces the impact on components and parts; Tin cover absorbs heat and the part that pin is positioned at circuit with insert hole also can be welded together to form inner solder joint after producing fusing, and internal welding point plays the effect of the bonding strength improved between components and parts and circuit; When the formation of inner solder joint can be played and extract components and parts, auxiliary pin carries out stressed with the junction of circuit, thus is not easy to produce electrical connection bad phenomenon; Circuit is not easy to be damaged.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the using state schematic diagram of embodiment one.
Fig. 3 is the structural representation of the utility model embodiment two.
In figure: circuit board body 1, deposit hole 11, position 21 that circuit 2, circuit are provided with insert hole, insert hole 3, tin cover 4, inner solder joint 41, copper pin 42, copper pin near the inner peripheral surface 71 of one end 421 of circuit, components and parts 5, pin 51, outside solder joint 6, guide ring 7, guide ring, retaining pin 72, retaining pin along medial surface 721, protective layer 8, via hole 81, the connector 82 of the radial direction of guide ring.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
Embodiment one, see Fig. 1, a kind of double-sided PCB being provided with protective layer, comprises circuit board body 1.The tow sides of circuit board body 1 are all provided with circuit 2 and protective layer 8.Circuit 2 is provided with insert hole 3.The through circuit board body 1 of insert hole 3 and circuit 2.Tin cover 4 is equipped with in insert hole 3.Protective layer 8 covers circuit 2 and circuit board body 1 simultaneously.The position of the corresponding insert hole of protective layer 8 is provided with via hole 81.The position 21 that circuit is provided with insert hole is exposed to via hole 81.Circuit board body 1 is provided with deposits hole 11.The inner aperture area large outer end opening area depositing hole 11 is little.Protective layer 8 is provided with connector 82.The size and shape of connector 82 mates with depositing hole 11.Connector 82 is connected to be deposited in hole 11.
See Fig. 2, during use, the pin 51 of components and parts 5 is inserted from one end away from circuit of insert hole 3.Then pin 51 and circuit 2 are welded together and form outside solder joint 6.Absorbed by tin cover 4 when heat pin 51 in welding process conducts, tin cover 4 absorbs heat and produces fusing, after tin cover 4 fusing, the part that pin 51 is positioned at circuit with insert hole 3 is also welded together to form inner solder joint 41.
Embodiment two, the difference with embodiment one is:
See Fig. 3, in the jacket wall of tin cover 4, be provided with some copper pins 42.The circumference distribution that copper pin 42 overlaps along tin.The axis that copper pin 42 overlaps along tin extends.Copper pin is exposed to tin cover 4 near one end 421 of circuit.Copper pin is connected to together with circuit 2 thermal conductivity near one end 421 of circuit.Guide ring 7 is provided with in insert hole 3.Tin cover 4 is between guide ring 7 and circuit 2.The inner peripheral surface 71 of guide ring is the conical surface that the little outer diameter of inner diameter is large.It is interference fit between guide ring 7 and insert hole 3.Guide ring 7 is provided with flexible retaining pin 72.Retaining pin 72 is arranged at the inner face of guide ring 7.Retaining pin is positioned on the same conical surface along the medial surface 721 of the radial direction of guide ring and the inner peripheral surface 71 of guide ring.
During use, copper pin 42 can play the effect improving heat-conducting effect.Guide ring 7 can make pin to insert easily, and when extracting, retaining pin 72 can play the effect stoping pin to be extracted.
Claims (10)
1. one kind is provided with the double-sided PCB of protective layer; comprise circuit board body; the tow sides of described circuit board body are all provided with circuit; described circuit is provided with the insert hole of through described circuit board body; it is characterized in that, also comprise the protective layer covering described circuit and circuit board body, the position of the corresponding described insert hole of described protective layer is provided with via hole; the position that described circuit is provided with described insert hole is exposed to described via hole, is equipped with tin cover in described insert hole.
2. the double-sided PCB being provided with protective layer according to claim 1, is characterized in that, is provided with some copper pins in the wall of described tin cover, and the circumference distribution that described copper pin overlaps along tin axially extends, and described copper pin is exposed to described tin cover near one end of described circuit.
3. the double-sided PCB being provided with protective layer according to claim 2, is characterized in that, described copper pin is connected to together with described circuit.
4. the double-sided PCB being provided with protective layer according to claim 1 or 2 or 3; it is characterized in that; be provided with guide ring in described insert hole, described tin overlaps between described guide ring and circuit, and the inner peripheral surface of described guide ring is the conical surface that the little outer diameter of inner diameter is large.
5. the double-sided PCB being provided with protective layer according to claim 4, is characterized in that, is interference fit between described guide ring and insert hole.
6. the double-sided PCB being provided with protective layer according to claim 5, is characterized in that, described guide ring is provided with the flexible retaining pin preventing the pin of the electric elements be plugged in insert hole from extracting from the one end away from circuit.
7. the double-sided PCB being provided with protective layer according to claim 6, is characterized in that, described retaining pin is arranged at the inner face of described guide ring.
8. the double-sided PCB being provided with protective layer according to claim 7, is characterized in that, described retaining pin is positioned on the same conical surface along the medial surface of the radial direction of guide ring and the inner peripheral surface of described guide ring.
9. the double-sided PCB being provided with protective layer according to claim 1 or 2 or 3, is characterized in that, described circuit board body is provided with deposits hole, described protective layer be provided be contained in described in deposit connector in hole.
10. the double-sided PCB being provided with protective layer according to claim 9, is characterized in that, described in deposit the inner aperture area large outer end opening area in hole little, deposit in hole described in described connector is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926782.1U CN205179497U (en) | 2015-11-19 | 2015-11-19 | Double -side circuit board with protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926782.1U CN205179497U (en) | 2015-11-19 | 2015-11-19 | Double -side circuit board with protective layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205179497U true CN205179497U (en) | 2016-04-20 |
Family
ID=55743422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520926782.1U Expired - Fee Related CN205179497U (en) | 2015-11-19 | 2015-11-19 | Double -side circuit board with protective layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205179497U (en) |
-
2015
- 2015-11-19 CN CN201520926782.1U patent/CN205179497U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160420 Termination date: 20191119 |