CN209845454U - Circuit board with multiple fusing protection - Google Patents
Circuit board with multiple fusing protection Download PDFInfo
- Publication number
- CN209845454U CN209845454U CN201920085162.8U CN201920085162U CN209845454U CN 209845454 U CN209845454 U CN 209845454U CN 201920085162 U CN201920085162 U CN 201920085162U CN 209845454 U CN209845454 U CN 209845454U
- Authority
- CN
- China
- Prior art keywords
- positive terminal
- circuit board
- thermistor
- solder mask
- fuse
- 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
Links
- 229910000679 solder Inorganic materials 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 15
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of the circuit board technique and specifically relates to a circuit board of multiple fusing protection, which comprises a substrate, the fixed wiring layer that is equipped with in one side of base plate, the fixed solder mask that is equipped with in one side that the base plate was kept away from to the wiring layer, upper surface one side of solder mask is equipped with positive terminal, one side of positive terminal is equipped with first recess, first recess internal fixation is equipped with first fusing resistance, the one side of keeping away from positive terminal on the solder mask is equipped with negative terminal, negative terminal's bottom contacts with the base plate, one side that positive terminal was kept away from to negative terminal is equipped with the second recess, the second recess internal fixation is equipped with second fusing resistance, it is equipped with thermistor to weld fixedly between positive terminal and the negative terminal on the solder mask, weld one side fixedly connected with support frame that lies in thermistor on the solder mask, the fixed fuse that is equipped with on the. The utility model discloses simple structure is worth promoting.
Description
Technical Field
The utility model relates to a circuit board technical field especially relates to a circuit board of multiple fusing protection.
Background
The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout. The circuit board can be called as a printed circuit board or a printed circuit board, an FPC (flexible printed circuit) board and a rigid-flex printed circuit board, and the FPC board is also called as a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. The flexible and rigid combined circuit board has the characteristics of high wiring density, light weight, thin thickness and good bending property, and is a circuit board with FPC (flexible printed circuit) characteristics and PCB (printed circuit board) characteristics formed by combining a flexible circuit board and a rigid circuit board through processes of pressing and the like according to relevant process requirements. The existing circuit board has fewer protection measures and short circuit, which causes the circuit board to be burnt.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the circuit board is burnt out due to the short circuit in the prior art, and providing a circuit board with multiple fusing protection.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the design is a circuit board with multiple fusing protection, which comprises a substrate, one side of base plate is fixed and is equipped with the wiring layer, the wiring layer is kept away from one side of base plate is fixed and is equipped with resistance welding film, upper surface one side of resistance welding film is equipped with positive terminal, positive terminal's bottom with the base plate contact, one side of positive terminal is equipped with first recess, the first recess internal fixation is equipped with first fusing resistance, the first lead wire of fixedly connected with on the first fusing resistance, it keeps away from on the resistance welding film one side of positive terminal is equipped with negative terminal, negative terminal's bottom with the base plate contacts, negative terminal keeps away from one side of positive terminal is equipped with the second recess, the second recess internal fixation is equipped with second fusing resistance, the last fixedly connected with second lead wire of second fusing resistance, it lies in on the resistance welding film positive terminal with the fixed thermistor that is equipped with between the negative terminal The one end of thermistor is connected the negative terminal, lie in on the solder mask one side fixedly connected with support frame of thermistor, the fixed fuse that is equipped with on the support frame, the solder mask is located one side fixedly connected with fuse of thermistor, the one end fixed connection of fuse the thermistor, the fuse is kept away from thermistor's one end is fixed on the positive terminal.
Preferably, the substrate, the wiring layer and the solder mask are of an integral structure.
Preferably, the positive terminal and the negative terminal are symmetrically arranged.
Preferably, the fuse is connected in parallel to the thermistor.
The utility model provides a circuit board of multiple fusing protection, beneficial effect lies in: the utility model discloses a fuse structure test thermistor's voltage, the electric current among fusing resistance and the fuse detection circuitry, when the electric current in the circuit surpassed the safe value, fusing all took place for fuse, fusing resistance and fuse, protection circuit board, triple fusing protection for the circuit board can not damage, simple structure, and the circuit board has multiple fusing protection, and the circuit board can not damage.
Drawings
Fig. 1 is a schematic cross-sectional structural diagram of a circuit board with multiple fuse protection according to the present invention.
In the figure: the fuse comprises a substrate 1, a wiring layer 2, a solder mask 3, a positive terminal 4, a first groove 5, a first fusing resistor 6, a first lead 7, a negative terminal 8, a second groove 9, a second fusing resistor 10, a second lead 11, a thermistor 12, a fuse 13, a support frame 14 and a fuse 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, a multiple fuse protected circuit board includes a substrate 1, a wiring layer 2 fixedly disposed on one side of the substrate 1, a solder resist 3 fixedly disposed on one side of the wiring layer 2 away from the substrate 1, the solder resist 3 for protecting the substrate 1 during component bonding, the substrate 1, wiring layer 2 and solder mask 3 structure as an organic whole, upper surface one side of solder mask 3 is equipped with positive terminal 4, the bottom and the base plate 1 contact of positive terminal 4, one side of positive terminal 4 is equipped with first recess 5, first fusing resistance 6 is connected to first recess 5's effect, first recess 5 internal fixation is equipped with first fusing resistance 6, fusing takes place when the effect of first fusing resistance 6 is that the electric current in the circuit surpasss the safe value, first lead wire 7 breaks away from with positive terminal 3, the circuit disconnection, first lead wire 7 of fixedly connected with on the first fusing resistance 6.
Keep away from one side of positive terminal 4 on resistance welding film 3 and be equipped with negative terminal 8, positive terminal 4 and the setting of negative terminal 8 symmetry, negative terminal 8's bottom contacts with base plate 1, negative terminal 8 keeps away from one side of positive terminal 4 and is equipped with second recess 9, the effect of second recess 9 is installation second fusing resistance 10, second recess 9 internal fixation is equipped with second fusing resistance 10, second fusing resistance 10 is resistance fusing when the short circuit takes place for the circuit disconnection, make the circuit disconnection, protection circuit, fixedly connected with second lead wire 11 on second fusing resistance 10.
A thermistor 12 is fixedly arranged on the solder mask 3 between the positive terminal 4 and the negative terminal 8, the thermistor 12 has the function of increasing heat when a circuit is short-circuited, so that the resistance value of the thermistor 12 is increased to increase voltage, and the fuse 13 is fused inside the fuse, one end of the thermistor 12 is connected with the negative terminal 8, one side of the thermistor 12 on the solder mask 3 is fixedly connected with a support frame 14, the support frame 14 has the function of fixing the fuse 13 for convenient replacement, the fuse 13 is fixedly arranged on the support frame 14, the fuse 13 has the function of fusing inside the fuse 13 when the voltage increase of the thermistor 12 is detected, a circuit is cut off, a circuit board is protected, the fuse 13 is connected on the thermistor 12 in parallel, one side of the solder mask 3 on the thermistor 12 is fixedly connected with a fuse 15, and the fuse 15 has the function of increasing current on the circuit, the fuse 15 is fused to protect the circuit board, one end of the fuse 15 is fixedly connected with the thermistor 12, and one end of the fuse 15, which is far away from the thermistor 12, is fixed on the positive terminal 4.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The circuit board comprises a substrate (1) and is characterized in that a wiring layer (2) is fixedly arranged on one side of the substrate (1), the wiring layer (2) is far away from a solder mask (3) fixedly arranged on one side of the substrate (1), a positive terminal (4) is arranged on one side of the upper surface of the solder mask (3), the bottom end of the positive terminal (4) is in contact with the substrate (1), a first groove (5) is arranged on one side of the positive terminal (4), a first fusing resistor (6) is fixedly arranged in the first groove (5), a first lead (7) is fixedly connected onto the first fusing resistor (6), a negative terminal (8) is arranged on one side, far away from the positive terminal (4), of the solder mask (3), and the bottom end of the negative terminal (8) is in contact with the substrate (1), keep away from negative terminal (8) one side of positive terminal (4) is equipped with second recess (9), second recess (9) internal fixation is equipped with second fusing resistance (10), fixedly connected with second lead wire (11) on second fusing resistance (10), lie in on solder mask (3) positive terminal (4) with fixed thermistor (12) of being equipped with between negative terminal (8), the one end of thermistor (12) is connected negative terminal (8), lie in on solder mask (3) one side fixedly connected with support frame (14) of thermistor (12), fixed fuse (13) of being equipped with on support frame (14), solder mask (3) are located one side fixedly connected with fuse (15) of thermistor (12), the one end fixed connection of fuse (15) thermistor (12), one end of the fuse (15) far away from the thermistor (12) is fixed on the positive terminal (4).
2. The multiple fuse protection circuit board according to claim 1, wherein the substrate (1), the wiring layer (2) and the solder resist (3) are of an integral structure.
3. The multiple fuse protection circuit board according to claim 1, wherein the positive terminal (4) and the negative terminal (8) are symmetrically arranged.
4. A multiple fuse protection circuit board according to claim 1, characterized in that the fuse (13) is connected in parallel to the thermistor (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920085162.8U CN209845454U (en) | 2019-01-18 | 2019-01-18 | Circuit board with multiple fusing protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920085162.8U CN209845454U (en) | 2019-01-18 | 2019-01-18 | Circuit board with multiple fusing protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209845454U true CN209845454U (en) | 2019-12-24 |
Family
ID=68901994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920085162.8U Expired - Fee Related CN209845454U (en) | 2019-01-18 | 2019-01-18 | Circuit board with multiple fusing protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209845454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115039307A (en) * | 2020-02-21 | 2022-09-09 | 住友电装株式会社 | Electric connection box |
-
2019
- 2019-01-18 CN CN201920085162.8U patent/CN209845454U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115039307A (en) * | 2020-02-21 | 2022-09-09 | 住友电装株式会社 | Electric connection box |
| CN115039307B (en) * | 2020-02-21 | 2024-04-26 | 住友电装株式会社 | Electrical connection box |
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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: 20191224 |