CN208422822U - A kind of miniaturization high-current fuse protector - Google Patents
A kind of miniaturization high-current fuse protector Download PDFInfo
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- CN208422822U CN208422822U CN201820947085.8U CN201820947085U CN208422822U CN 208422822 U CN208422822 U CN 208422822U CN 201820947085 U CN201820947085 U CN 201820947085U CN 208422822 U CN208422822 U CN 208422822U
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Abstract
The utility model discloses a kind of miniaturization high-current fuse protectors, it is related to fuse technologies field, the utility model includes the ceramic tube layer of inner hollow, the fuse layer being set in ceramic tube layer and the electrode layer for being respectively arranged at the outer both ends of ceramic tube layer, it further include the arc extinguishing layer being filled between ceramic tube layer and fuse layer, the electrode layer includes the internal electrode layer connecting with ceramic tube layer and the outer electrode layer being set to outside internal electrode layer, fuse layer sequentially passes through ceramic tube layer and internal electrode layer is connect with outer electrode layer, fuse layer is horizontally placed in the middle part of ceramic tube layer in flat, the fuse layer of the utility model is horizontally placed in the middle part of ceramic tube layer in flat, increase the cross-sectional area of fuse layer, just it is capable of increasing the conductive current of fuse layer, fuse is set to be suitable for the occasion of high current.
Description
Technical field
The utility model relates to fuse technologies fields, more particularly to a kind of miniaturization high-current fuse protector.
Background technique
Fuse be it is a kind of installation in circuit, guarantee the electic protection component of circuit safety, be the core in electronic circuit
Heart element plays the role of protective separation to the normal operation work of late-class circuit, is widely used in weapons, ground installation, water
In the circuit systems of military equipments such as lower equipment, ship, radar base station, information network, Aeronautics and Astronautics.
Fuse-link is one of critical component of fuse, and any melt material all has resistance value, and the electricity of material
Resistance is the function of temperature.Melt when a constant current passes through melt material with certain resistance value can generate heat, what melt generated
Heat and current squaring are directly proportional, and electric current is bigger, and the temperature of melt is higher, and calorific value follows formula: Q=I2Rt, wherein Q
It is calorific value, I is the electric current by melt, and R is the resistance of melt, and t is time of the electric current by melt, with the increasing of time t
Its calorific value is added also to increase.
If the speed for generating heat is less than the speed that heat dissipates, fuse will not fuse；If generating heat
When speed is equal to the speed that heat dissipates, it will not fuse within considerable time；If the speed for generating heat is greater than heat
When measuring the speed to dissipate, then the heat generated will be more and more, and because it has a constant specific heat and quality, the increasing of heat
Add in the raising for just showing temperature, when more than the fusing point that temperature is increased to melt, fuse is just fused, that is, disconnected
Open circuit shields, and prevents failure propagation, achievees the purpose that protect circuit.
The surface-mount type fuse of Current Domestic can reach high current, but correspondingly, as shown in Figure 1, fuse dimensions
Also larger, miniaturization exchange Surface Mount fuse on the market is unable to reach the high current of defined again now, this is to a certain degree
On constrain the development of China's associated electronics systems, at present minimize high current surface-mount type fuse all be using import foreign countries it is same
Class product uses, and leaves potential risk to China's military equipment, therefore the fuse of research high current, small size is at this stage
One developing direction of fuse.
Utility model content
The purpose of this utility model is that: in order to solve required by existing miniaturization surface-mount type fuse is unable to reach
The problem of high current, the utility model provide a kind of miniaturization high-current fuse protector.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of miniaturization high-current fuse protector, ceramic tube layer including inner hollow, the fusing being set in ceramic tube layer
Layer and the electrode layer for being respectively arranged at the outer both ends of ceramic tube layer, it is characterised in that: further include being filled in ceramic tube layer and fuse layer
Between arc extinguishing layer, the electrode layer includes the internal electrode layer connecting with ceramic tube layer and the external electrode being set to outside internal electrode layer
Layer, fuse layer sequentially passes through ceramic tube layer and internal electrode layer is connect with outer electrode layer, and the fuse layer is in flat horizontally disposed
In the middle part of ceramic tube layer.
Further, the length range of the fuse layer is 9~9.6mm, and width range is 1.42~1.46mm, height model
It encloses for 0.24~0.28mm.
Further, the fuse layer includes integrally formed two big end and is set between two big ends and connects two big ends
Interconnecting piece, the length range of each big end is 3.4~3.6mm, and the length range of interconnecting piece is 2.2~2.4mm.
Further, the material of the arc extinguishing layer is the composition of quartz sand or quartz sand and waterglass, and quartz sand has
Higher thermal conductivity and insulating properties, and have biggish contact area with electric arc, convenient for absorbing arc energy, electric arc can be made fast
Quickly cooling but, and can also avoid generating the secondary conducting that electric arc is formed after fusing because of fuse layer, enhance the arc extinguishing of fuse
Ability.
Further, the material of the internal electrode layer is copper, is all had between internal electrode layer and outer electrode layer and fuse layer
The contact resistance of good adhesion strength and high solderability and soldering resistance, welding is smaller, can reduce welding for fuse
The interference of energy, internal electrode layer are capable of fixing fuse layer, guarantee the consistency and reliability of product.
Further, the outer electrode layer is in nut cap shape, and material is copper, and is coated with gold on copper surface, outer electrode layer with
All have good adhesion strength and high solderability and soldering resistance between internal electrode layer and fuse layer, the contact resistance of welding compared with
It is small, it can reduce the interference welded for fuse performance, and fitting has good electric conductivity, solderability and corrosion resistance,
Can guarantee the Weldability of fuse in copper surface gold-plating, convenient for fuse installation and ensure effectively to be electrically connected.
Further, the material of the ceramic tube layer is A95 ceramics, and the thermal conductivity size of ceramic tube layer is directly related to molten
The rated current and operating chacteristics of disconnected device can integrally provide physical support by ceramic tube layer for fuse, and due to pottery
Ceramic material heat dissipation performance is good, additionally it is possible to play the role of heat dissipation.
Further, the material of the fuse layer is copper-tin alloy.
Further, the length range of the fuse is 9.8~10.2mm, and altitude range is 3.1~3.3mm, width
Range is 3.1~3.3mm.
Further, the length range of the outer electrode layer is 1.6~1.8mm.
Further, the length of the fuse is 10mm, is highly 3.2mm, width 3.2mm.
Further, the length of the outer electrode layer is 1.7mm.
The beneficial effects of the utility model are as follows:
1, the fuse layer of the utility model is horizontally placed in the middle part of ceramic tube layer in flat, increases the transversal of fuse layer
Area is just capable of increasing the conductive current of fuse layer, so that fuse is suitable for the occasion of high current, can preferably meet
The design requirement of contemporary electronic systems equipment, makes the control circuit of high current system equipment tend to be miniaturized.
2, the utility model is on the basis of small size, by increasing the arc extinguishing being filled between ceramic tube layer and fuse layer
Layer absorbs arc energy, electric arc can be made to cool down rapidly, and can also avoid generating what electric arc was formed after fusing because of fuse layer
Secondary conducting enhances the arc extinguishing ability of fuse.
3, the material of the utility model arc extinguishing layer is the composition of quartz sand or quartz sand and waterglass, quartz sand have compared with
High thermal conductivity and insulating properties, and have biggish contact area with electric arc, in the moment of the fuse layer fusing starting the arc, by quartz sand
It is absorbed, realizes the function of moment arc extinguishing, the arc extinguishing ability of fuse can be enhanced.
4, the electrode layer of the utility model includes outer electrode layer and internal electrode layer, can increase fuse layer using bipolar electrode layer
The reliability and fastness of connecting portion between electrode layer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing high current surface-mount type fuse.
Fig. 2 is the monnolithic case schematic diagram of the utility model.
Fig. 3 is the internal structure schematic diagram of the utility model.
Fig. 4 is the structural schematic diagram of the utility model fuse layer.
Fig. 5 is the usage state diagram of the utility model.
Fig. 6 is the main view scale diagrams of the utility model.
Fig. 7 is the left view scale diagrams of the utility model.
Appended drawing reference: 1, electrode layer；1-1, internal electrode layer；1-2, outer electrode layer；2, ceramic tube layer；3, arc extinguishing layer；4, it melts
Tomography；4-1, big end；4-2, interconnecting piece；5, circuit board；6, pad.
Specific embodiment
In order to which those skilled in the art better understand the utility model, with reference to the accompanying drawing with following embodiment to this
Utility model is described in further detail.
Embodiment 1
As shown in Figure 2, Figure 3 and Figure 4, the present embodiment provides a kind of miniaturization high-current fuse protectors, including rectangular shape
Inner hollow ceramic tube layer 2, be set in ceramic tube layer 2 fuse layer 4, be respectively arranged at the outer both ends of ceramic tube layer 2
Electrode layer 1 and the arc extinguishing layer 3 being filled between ceramic tube layer 2 and fuse layer 4, the electrode layer 1 include connecting with ceramic tube layer 2
The internal electrode layer 1-1 connect the and outer electrode layer 1-2 being set to outside internal electrode layer 1-1, fuse layer 4 sequentially pass through ceramic 2 He of tube layer
Internal electrode layer 1-1 is connect with outer electrode layer 1-2, the outer electrode layer 1-2, internal electrode layer 1-1 and 4 firm welded of fuse layer, institute
It states fuse layer 4 and is horizontally placed on ceramic 2 middle part of tube layer in flat, fuse layer 4 includes integrally formed two big ends 4-1 and sets
Being placed between two big end 4-1 and connecting the length of the interconnecting piece 4-2, each big end 4-1 of two big end 4-1 is 3.5mm, interconnecting piece
Length be 2.3mm, the internal electrode layer 1-1 nut cap shape that is square is adapted to ceramic tube layer 2 in the present embodiment, and material is copper, outside
Electrode layer 1-2 is square nut cap shape, and material is copper, and is coated with gold on copper surface, and the material of ceramic tube layer 2 is A95 ceramics, is melted
The material of tomography 4 is copper-tin alloy, and as shown in Figure 6 and Figure 7, the length of the outer electrode layer of the present embodiment is 1.7mm, and fuse is long
Degree is 10mm, is highly 3.2mm, width 3.2mm.
The fuse layer 4 of the fuse of the present embodiment is horizontally placed on ceramic 2 middle part of tube layer in flat, increases fuse layer
4 cross-sectional area is just capable of increasing the conductive current of fuse layer 4, and fuse is enable to be suitable for the occasion of high current, Neng Gougeng
The design requirement for meeting contemporary electronic systems equipment well, makes the control circuit of high current system equipment tend to be miniaturized, and
On the basis of small size, the arc extinguishing layer 3 between ceramic tube layer 2 and fuse layer 4 is filled in by increase, absorbs arc energy,
Electric arc can be made to cool down rapidly, and can also avoid generating the secondary conducting that electric arc is formed after fusing because of fuse layer 4, enhanced
The arc extinguishing ability of fuse.
As shown in figure 5, by two outer electrode layer 1-2 of the present embodiment fuse by 6 Surface Mount of pad on circuit board 5,
The miniaturization high-current fuse protector of the present embodiment is tested, obtains that test result is as follows shown in table:
It can be obtained by upper table, the fuse of the present embodiment can be suitable for the circuit of 60 Ampere currents, and work as current value 10
It when times rated current, can be acted rapidly within the time of 10ms, realize the protection to circuit.
Embodiment 2
The present embodiment advanced optimizes on the basis of embodiment 1, specifically: the material of the arc extinguishing layer 3 is quartz
The composition of sand or quartz sand and waterglass, the material of the present embodiment arc extinguishing layer 3 are the group of quartz sand or quartz sand and waterglass
Object, quartz sand thermal conductivity with higher and insulating properties are closed, and has biggish contact area with electric arc, convenient for absorbing arc energy
Amount, can be such that electric arc cools down rapidly, and can also avoid generating the secondary conducting that electric arc is formed after fusing because of fuse layer, can
Enhance the arc extinguishing ability of fuse.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (10)
1. a kind of miniaturization high-current fuse protector, ceramic tube layer (2) including inner hollow is set in ceramic tube layer (2)
Fuse layer (4) and the electrode layer (1) for being respectively arranged at ceramic tube layer (2) outer both ends, it is characterised in that: further include being filled in ceramics
Arc extinguishing layer (3) between tube layer (2) and fuse layer (4), the electrode layer (1) include the interior electrode connecting with ceramic tube layer (2)
Layer and is set to the outer electrode layer (1-2) of internal electrode layer (1-1) outside at (1-1), fuse layer (4) sequentially pass through ceramic tube layer (2) and
Internal electrode layer (1-1) is connect with outer electrode layer (1-2), and the fuse layer (4) is horizontally placed in ceramic tube layer (2) in flat
Portion.
2. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the length of the fuse layer (4)
Degree range is 9~9.6mm, and width range is 1.42~1.46mm, and altitude range is 0.24~0.28mm.
3. a kind of miniaturization high-current fuse protector according to claim 2, it is characterised in that: the fuse layer (4) includes
Integrally formed two big end (4-1) and it is set to the interconnecting piece (4-2) that two big ends (4-1) is connected between two big ends (4-1), often
The length range of a big end (4-1) is 3.4~3.6mm, and the length range of interconnecting piece (4-2) is 2.2~2.4mm.
4. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the material of the arc extinguishing layer (3)
Material is the composition of quartz sand or quartz sand and waterglass.
5. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the outer electrode layer (1-2)
In nut cap shape, material is copper, and is coated with gold on copper surface.
6. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the ceramics tube layer (2)
Material is A95 ceramics.
7. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the material of the fuse layer (4)
Material is copper-tin alloy.
8. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the length model of the fuse
It encloses for 9.8~10.2mm, altitude range is 3.1~3.3mm, and width range is 3.1~3.3mm.
9. a kind of miniaturization high-current fuse protector according to claim 1, it is characterised in that: the outer electrode layer (1-2)
Length range be 1.6~1.8mm.
10. a kind of miniaturization high-current fuse protector according to claim 6, it is characterised in that: the length of the fuse
It is highly 3.2mm for 10mm, width 3.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820947085.8U CN208422822U (en) | 2018-06-20 | 2018-06-20 | A kind of miniaturization high-current fuse protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820947085.8U CN208422822U (en) | 2018-06-20 | 2018-06-20 | A kind of miniaturization high-current fuse protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208422822U true CN208422822U (en) | 2019-01-22 |
Family
ID=65109521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820947085.8U Active CN208422822U (en) | 2018-06-20 | 2018-06-20 | A kind of miniaturization high-current fuse protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208422822U (en) |
-
2018
- 2018-06-20 CN CN201820947085.8U patent/CN208422822U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 233, Wulian 1st Road, Gongxing street, Shuangliu District, Chengdu, Sichuan 610000 Patentee after: Sichuan tianmicroelectronics Co., Ltd Address before: 610000 Sichuan province Chengdu Shuangliu Industrial Zone Southwest Airport Economic Development Zone concentrated area Patentee before: SICHUAN TIANWEI ELECTRONIC Co.,Ltd. |
|
| CP03 | Change of name, title or address |