CN207117153U - A kind of safety fuse and power-supply system - Google Patents
A kind of safety fuse and power-supply system Download PDFInfo
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- CN207117153U CN207117153U CN201720861813.9U CN201720861813U CN207117153U CN 207117153 U CN207117153 U CN 207117153U CN 201720861813 U CN201720861813 U CN 201720861813U CN 207117153 U CN207117153 U CN 207117153U
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Abstract
The utility model discloses a kind of safety fuse and power-supply system, to improve protection reliability, while reduces the cost of safety fuse.Safety fuse includes fuse and the first group of pin and second group of pin that are oppositely arranged, wherein, fuse is set up between first group of pin and second group of pin, and the first side of fuse is connected with first group of pin, second side of fuse is connected with second group of pin, fuse includes the first connecting portion set close to the first side of fuse, the second connecting portion set close to the second side of fuse and the main road fuse-link being connected between first connecting portion and second connecting portion, the pin height of first group of pin and second group of pin is in the threshold range of setting.
Description
Technical field
Circuit brake technical field is the utility model is related to, more particularly to a kind of safety fuse and power supply system
System.
Background technology
In view of the high reliability request of circuit system, when there is the situation of abnormal excessively stream in circuit malfunctions, it is necessary to and
When cut off circuit, to avoid the important devices damaged by overcurrent overheat in circuit, or burn and circuit or even cause fire etc.
Situation occurs, therefore the design insured is a ring essential in circuit design.Currently used insurance scheme includes as follows
Three kinds：
Scheme one：Using the protected mode of conventional fuse silk；
Scheme two：The protected mode of conventional fuse silk is replaced using copper cash；
Scheme three：Replaced using PCB (Printed Circuit Board, printed circuit board (PCB), abbreviation PCB) cabling conventional
The protected mode of fuse.
For scheme one, the cost of one side fuse is higher, on the other hand, in high-power applications occasion, due to circuit
The output current of system is larger, it is necessary to which more fuses are used in parallel, according to Joule's law Q=0.24I2Rt, pass through every guarantor
When the electric current of dangerous silk is larger, heat accumulation is easily caused around fuse, cause fuse in not up to blowout current just
It can be fused due to too high environment temperature；For scheme two, for copper cash in addition to disadvantages mentioned above, its fusing point is also very high, works as electricity
Have for a long time in road high current by when, it is possible that copper cash is not blown and other heating power device elder generation quilts in circuit
The situation of damage, increase risk on fire, simultaneously for copper cash and PCB tie point, also due to copper cash temperature is too high and increases
The risk of PCB failures；For scheme three, by the use of the copper foil being laid on pcb board as fuse, its fusing-off temperature is equally very
Height, the heat that copper foil is sent can be directly delivered to pcb board, are relatively easily caused PCB plate burstings, foaming etc., cause PCB to fail, and copper
It is not easily repaired after the fusing of paper tinsel excessively stream, it is necessary to replace whole pcb board, cost is higher.
Based on this, how to design a kind of safety fuse of the high and low cost of reliability is technology urgently to be resolved hurrily at present
Problem.
Utility model content
The purpose of the utility model embodiment is to provide a kind of safety fuse and power-supply system, to improve fusing insurance
The protection reliability of device, while reduce cost.
The utility model embodiment provides a kind of safety fuse, including fuse and be oppositely arranged first group
Pin and second group of pin, wherein, the fuse is set up between first group of pin and second group of pin, and the guarantor
First side of dangerous body is connected with first group of pin, and the second side of the fuse is connected with second group of pin, described
Fuse includes the first connecting portion close to the setting of the first side of the fuse, the second side close to the fuse is set
Second connecting portion and the main road fuse-link being connected between the first connecting portion and second connecting portion, first group of pin
Pin height with second group of pin is in the threshold range of setting.
Preferably, the material of the main road fuse-link be with the first connecting portion and second connecting portion of the fuse and
The material identical material of first group of pin and second group of pin.
Preferably, the safety fuse is integrated punch forming structure.
Optionally, the fuse is sheet fuse, cuboid fuse or cylindrical fuse.
Preferably, at least two groups are connected between the first connecting portion and second connecting portion of the fuse to be arranged in series
Main road fuse-link, pass through middle connection between two groups of equal and adjacent main road fuse-links of the blowout current of every group of main road fuse-link
Portion connects.
Preferably, every group of main road fuse-link includes at least one main road fuse-link.
Preferably, the second side of the fuse is provided with the branch road fuse-link for being connected to the second connecting portion, described
Branch road fuse-link is connected with second group of pin.
Using the utility model embodiment technical scheme, electric current is introduced to fuse by first group of pin and fused by main road
Flowed out after body by second group of pin, when the situation of abnormal excessively stream occurs in current loop, main road fuse-link can fuse so as to cut
Deenergizing, protection circuit safe operation.Wherein, the blowout current that the material of fuse-link and physical dimension can be as needed
Size is designed, according to Joule's law Q=0.24I2Rt, wherein Q are that electric current flows through heat caused by fuse-link, and I is stream
The electric current of fuse-link is crossed, R is the resistance of fuse-link, and t flows through the time used in fuse-link for electric current, and the material of fuse-link is once true
Fixed, its resistivity also just determines that now the resistance of fuse-link is determined by its physical dimension, by changing fuse-link with fusing point therewith
Physical dimension can change its resistance, and then can be designed that the fuse-link of different blowout currents.Therefore, in the utility model
In embodiment technical scheme, by selecting suitable main road fuse-link material and physical dimension, the safety fuse can be made
Meet different blowout current demands, meanwhile, the height of pin is in the threshold range of setting, when the safety fuse is connected
When in the current loop of pcb board, influence of the heat caused by fuse-link to pcb board can also be reduced, improves fusing insurance
The protection reliability of device, and fuse compared with prior art, the safety fuse is simple in construction, and cost is relatively low.
The utility model embodiment additionally provides a kind of power-supply system, including the fusing guarantor described in any of the above-described technical scheme
Dangerous device.The functional reliability of the power-supply system is higher.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment safety fuse；
Fig. 2 is the overlooking the structure diagram of the embodiment safety fuse of the utility model one；
Fig. 3 is the structural representation of another embodiment safety fuse of the utility model.
Reference：
First group of 10- fuses 20-, second group of pin 30- pin 11- first connecting portions
12- second connecting portion 13- main road fuse-link 14- middle interconnecting pieces
15- branch road fuse-links
Embodiment
In order to improve the reliability of safety fuse, while cost is reduced, the utility model embodiment provides one kind
Safety fuse and power-supply system.To make the purpose of this utility model, technical scheme and advantage clearer, lift implement below
Example is described in further detail to the utility model.
As shown in figure 1, the safety fuse that the utility model embodiment provides, including fuse 10 and be oppositely arranged
First group of pin 20 and second group of pin 30, wherein, fuse 10 be set up in first group of pin 20 and second group of pin 30 it
Between, and the first side of fuse 10 is connected with first group of pin 10, the second side of fuse 10 is connected with second group of pin 30, is protected
Dangerous body 10 includes the first connecting portion 11 set close to the first side of fuse 10, set close to the second side of fuse 10 the
Two connecting portions 12 and the main road fuse-link 13 being connected between first connecting portion 11 and second connecting portion 12, first group of pin 20
Pin height with second group of pin 30 is in the threshold range of setting.
Using the utility model embodiment technical scheme, electric current is introduced to fuse 10 by first group of pin 20 and passes through main road
Flowed out after fuse-link 13 by second group of pin 30, when the situation of abnormal excessively stream occurs in current loop, main road fuse-link 13 is meeting
Fusing ensures the safe operation of circuit so as to cut off circuit.Wherein, the material of fuse-link and physical dimension can be according to PCB
The size for the blowout current that plate needs is designed, according to Joule's law Q=0.24I2Rt, Q are that electric current produces when flowing through fuse-link
Raw heat, I are the electric current for flowing through fuse-link, and R is the resistance of fuse-link, and t flows through the time used in fuse-link, fusing for electric current
The material of body once it is determined that, its resistivity also just determines that now the resistance of fuse-link is determined by its physical dimension with fusing point therewith,
Its resistance can be changed by the physical dimension for changing fuse-link, and then can be designed that the fuse-link of different blowout currents.Cause
This,, can be with by selecting the suitable material of main road fuse-link 13 and physical dimension in the utility model embodiment technical scheme
The safety fuse is set to meet different blowout current demands, meanwhile, the height of pin is in the threshold range of setting, when this
When safety fuse is series in the current loop of pcb board, heat caused by fuse-link 13 can also be reduced to the shadow of pcb board
Ring, improve the protection reliability of safety fuse, and fuse compared with prior art, the safety fuse structure
Simply, cost is relatively low.
It should be noted that in the utility model embodiment, the height of pin could be arranged to 2mm ± 0.1mm, herein
During height, you can to reduce influence of the heat caused by fuse-link to pcb board, shadow will not be caused to installing and using for pcb board again
Ring；The quantity and physical dimension of every group of pin can determine according to actual use situation, in order to avoid the company of pin and pcb board
Contact causes to damage because temperature is too high to pcb board, can increase the sectional area of pin as far as possible, to reduce the resistance of pin, from
And reduce heat caused by pin.
Wherein, the concrete shape of fuse 10 is unlimited, can be sheet fuse, cuboid fuse or cylinder
Shape fuse, therefore not to repeat here.
As shown in Fig. 2 in preferred embodiment of the present utility model, the first connecting portion 11 and second connecting portion of fuse
At least two groups main road fuse-links 13 being arranged in series are connected between 12, the blowout current of every group of main road fuse-link is equal and adjacent
Two groups of main road fuse-links between connected by middle interconnecting piece 14.Using the technical scheme, multigroup main road fuse-link series connection is set
Put, can further improve the reliability of safety fuse.
Wherein, the particular number of main road fuse-link 13 is unlimited in every group of main road fuse-link, specifically can be according to flowing through electric current
The size of current in loop determines.When electric current is smaller, the quantity of main road fuse-link 13 can be one in every group of main road fuse-link,
The electric current introduced by first group of pin 20 is flowed out after every group of main road fuse-link by second group of pin 30 successively.When electric current is larger
When, every group of main road fuse-link can be made to include at least two main road fuse-links 13 as needed, now, drawn by first group of pin 20
The electric current entered voluntarily shunts according to the resistance value of each main road fuse-link 13 of every group of main road fuse-link, when by one of main
When the electric current of road fuse-link 13 exceedes its blowout current, the main road fuse-link 13 can fuse so as to cut off circuit, ensure circuit
Safe operation；It should be understood that the blowout current of every group of main road fuse-link is the blowout current of all main road fuse-links of the group
Sum.In addition, needing to be arranged at intervals between at least two main road fuse-links 13 of every group of main road fuse-link, can so reduce in master
Heat accumulation caused by around road fuse-link 13, avoid main road fuse-link 13 in not up to blowout current due to too high environment temperature
Spend and fuse, so as to further increase the protection reliability of safety fuse.
It refer to shown in Fig. 3, in a preferred embodiment of the present utility model, the second side of fuse 10 is provided with company
The branch road fuse-link 15 of second connecting portion 12 is connected to, branch road fuse-link 15 is connected with second group of pin 30.As the master of circuit system
, it is necessary to be protected to each current branch when line current is exported with multiple current branch.Using the technical scheme, pass through
Main road fuse-link 13 between one connecting portion 11 and second connecting portion 12 can be with the main line safe operation of protection circuit system；Branch
Road fuse-link 15 is connected by second group of pin 30 with current branch, so as to the current branch safe operation of protection circuit system.
It should be understood that by selecting the physical dimension of different branch road fuse-links 15 that it can be made to meet different blowout current need
Ask.
The specific material of main road fuse-link is unlimited, it is preferred that the material of main road fuse-link is to be connected with the first of fuse
Portion is identical with second connecting portion and the material of first group of pin and second group of pin and is copper material.Now, fusing insurance dress
Putting can be integrally formed using Sheet Metal Forming Technology.So, the production technology of safety fuse can be simplified, reduce production cost.
It is noted that the material of branch road fuse-link is preferably also copper material, now safety fuse still can use punching press
Technique is integrally formed.
The utility model embodiment additionally provides a kind of power-supply system, includes the fusing insurance dress of any of the above-described technical scheme
Put.The functional reliability of the power-supply system is higher.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (8)
1. a kind of safety fuse, it is characterised in that including fuse and first group of pin being oppositely arranged and second group
Pin, wherein, the fuse is set up between first group of pin and second group of pin, and the first side of the fuse
It is connected with first group of pin, the second side of the fuse is connected with second group of pin, and the fuse includes leaning on
First connecting portion that first side of the nearly fuse is set, the second connecting portion set close to the second side of the fuse with
And the main road fuse-link between the first connecting portion and second connecting portion is connected to, first group of pin and second group of pin
Pin height in the threshold range of setting.
2. safety fuse as claimed in claim 1, it is characterised in that the material of the main road fuse-link be and the guarantor
The first connecting portion and second connecting portion of dangerous body and the material identical material of first group of pin and second group of pin.
3. safety fuse as claimed in claim 2, it is characterised in that the safety fuse is integrated punch forming
Structure.
4. safety fuse as claimed in claim 1, it is characterised in that the fuse is sheet fuse, cuboid
Shape fuse or cylindrical fuse.
5. the safety fuse as described in any one of Claims 1 to 4, it is characterised in that the first connection of the fuse
At least two groups main road fuse-links being arranged in series, the blowout current of every group of main road fuse-link are connected between portion and second connecting portion
Connected between two groups of equal and adjacent main road fuse-links by middle interconnecting piece.
6. safety fuse as claimed in claim 5, it is characterised in that every group of main road fuse-link includes at least one main road
Fuse-link.
7. the safety fuse as described in any one of Claims 1 to 4, it is characterised in that the second side of the fuse is set
The branch road fuse-link for being connected to the second connecting portion is equipped with, the branch road fuse-link is connected with second group of pin.
8. a kind of power-supply system, it is characterised in that including the safety fuse as described in any one of claim 1~7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720861813.9U CN207117153U (en) | 2017-07-14 | 2017-07-14 | A kind of safety fuse and power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720861813.9U CN207117153U (en) | 2017-07-14 | 2017-07-14 | A kind of safety fuse and power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207117153U true CN207117153U (en) | 2018-03-16 |
Family
ID=61584308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720861813.9U Active CN207117153U (en) | 2017-07-14 | 2017-07-14 | A kind of safety fuse and power-supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207117153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096855A (en) * | 2021-04-13 | 2021-07-09 | 深圳思锐科电子有限公司 | Safety self-fusing cable |
| CN115150210A (en) * | 2021-03-31 | 2022-10-04 | 西门子股份公司 | Device for compensating for resistance tolerances and line driver for connecting communication equipment |
-
2017
- 2017-07-14 CN CN201720861813.9U patent/CN207117153U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115150210A (en) * | 2021-03-31 | 2022-10-04 | 西门子股份公司 | Device for compensating for resistance tolerances and line driver for connecting communication equipment |
| CN115150210B (en) * | 2021-03-31 | 2024-01-23 | 西门子股份公司 | Device for compensating resistance tolerance and line driver for connecting communication equipment |
| CN113096855A (en) * | 2021-04-13 | 2021-07-09 | 深圳思锐科电子有限公司 | Safety self-fusing cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201010 Address after: Ohio, USA Patentee after: Dimension Corp. Address before: 1510 Kansas Avenue, Loren, Ohio, USA Patentee before: Emerson Energy Systems, AB |
|
| TR01 | Transfer of patent right |