CN207425771U - A kind of fuse box with fusing indicating mechanism - Google Patents
A kind of fuse box with fusing indicating mechanism Download PDFInfo
- Publication number
- CN207425771U CN207425771U CN201721193384.9U CN201721193384U CN207425771U CN 207425771 U CN207425771 U CN 207425771U CN 201721193384 U CN201721193384 U CN 201721193384U CN 207425771 U CN207425771 U CN 207425771U
- Authority
- CN
- China
- Prior art keywords
- fuse
- fuse box
- glass tube
- temperature
- end cap
- 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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Abstract
The utility model discloses it is a kind of have fusing indicating mechanism fuse box, including：Glass tube is the hollow tube of both ends open；Fuse, is laid in the glass tube and both ends connect circuit, for carrying out overload protection to circuit；End cap is fastened on the both ends open of the glass tube；Central through hole is opened up in the end cap, is extend out to for fuse through end cap outside fuse box；Wherein, multiple temperature-sensitive expanded spheres are uniformly coated in the fuse, when in temperature-sensitive expanded spheres by electric current be more than its rated current, the temperature-sensitive expanded spheres, which are expanded to, bursts fuse, fuse box disconnecting circuit.When the fuse box of the utility model overhauls convenient for personnel, without measuring whether fuse box fails, burst as long as observing fuse by glass tube and whether expanding, just can judge whether fuse box can be continuing with, beneficial to operation.
Description
Technical field
The utility model is related to wire filaments field, more particularly to a kind of fuse box with fusing indicating mechanism.
Background technology
Current insurance silk has been mainly overload protective function to circuit also known as " fuse-link (fuse-link) ".Insurance
Silk is divided into overcurrent protection and overheating protection.The fuse said usually for the fuse of overcurrent protection (is also current limliting
Fuse)." Thermal Cutoffs " is commonly referred to as the fuse of overheating protection.Thermal Cutoffs is divided into as low-melting alloy
Shape and temperature-sensitive triggering shape also have memorial alloy shape etc., and (Thermal Cutoffs is to prevent that heating electric appliance or easy heating electric appliance temperature are excessively high
And protected, such as：Hair dryer, electric iron, electric cooker, electric furnace, transformer, motor etc.；It is in response to electricity consumption electricity
The rise of device Wen Sheng will not comprehend the operating current size of circuit.
Traditional fuse is that internal wiring disconnects after overcurrent fusing occurs, non-evident sympton outside fuse, so
The fuse of damage is also detected by instrument when repair is gone back.
Utility model content
The purpose of this utility model is to provide a kind of fuse box with fusing indicating mechanism, and cladding temperature-sensitive is swollen in fuse
Swollen ball, fuse disruption during temperature-sensitive expanded spheres during current overload, convenient for observing fuse state, beneficial to replacement.
Technical solution provided by the utility model is：
A kind of fuse box with fusing indicating mechanism, including：
Glass tube is the hollow tube of both ends open；
Fuse, is laid in the glass tube and both ends connect circuit, for carrying out overload protection to circuit；
End cap is fastened on the both ends open of the glass tube；Central through hole is opened up in the end cap, is worn for fuse
End cap is crossed to extend out to outside fuse box；
Wherein, multiple temperature-sensitive expanded spheres are uniformly coated in the fuse, when in temperature-sensitive expanded spheres by electric current be more than its volume
Constant current, the temperature-sensitive expanded spheres, which are expanded to, bursts fuse, fuse box disconnecting circuit.
Preferably, the glass tube is transparent glass tube, for observing internal fuse state.
Preferably, the fuse is lead-antimony alloy silk.
Preferably, the temperature-sensitive expanded spheres are macromolecular PTC thermistor.
Preferably, the end cap is nickel-plated brass material.
This is had the beneficial effect that with new：The temperature-sensitive expansion having been widely used is coated in traditional fuse Internal fuse
Ball, when electric current is more than rated current, temperature-sensitive expanded spheres are heated volume increase, until fuse is burst in expansion, convenient for personnel from glass
Pipe observes the state of fuse, when personnel overhaul, without measuring whether fuse box fails, as long as observing fuse by glass tube is
No expansion is burst, and just can judge whether fuse box can be continuing with.
Description of the drawings
Fig. 1 is the sectional view of the fuse box with fusing indicating mechanism described in the utility model.
Fig. 2 bursts sectional view during fuse for the indicating mechanism of fuse box described in the utility model.
Fig. 3 is the a-quadrant partial enlarged view of Fig. 2.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
As shown in Figure 1, the utility model provides a kind of fuse box with fusing indicating mechanism, including：End cap 1,
Glass tube 2, fuse 3 and indicating mechanism 4, the indicating mechanism 4 are made of multiple temperature-sensitive expanded spheres.Glass tube 2 is transparent glass
Pipe is the hollow tube of both ends open, for observing internal fuse state；End cap 1 uses nickel-plated brass material, is fastened on institute
On the both ends open for stating glass tube 2, the end cap 1 and glass tube 2 form enclosed construction.Fuse 3 is laid in the glass tube 2
And both ends connect circuit, and fuse 3 is made of three parts：First, melt portion, solution is lead-antimony alloy silk, it is fuse
Core, play the role of cut off electric current, same class, the melt of same specification fuse, material is identical, physical dimension wants phase
It is small as much as possible with, resistance value and consistent, it is most important that operating chacteristics is consistent；Second is that electrode section, usually there are two,
It is the important component that melt couples with circuit, it must have good electric conductivity, should not generate apparent installation contact resistance；
Third, stent, the effect of stent is exactly to fix melt and three parts is made to be easily installed, use as rigid entirety, it must
Must there are good mechanical strength, insulating properties, heat resistance and anti-flammability, should not produce fracture, deform in use, burning and is short-circuit
Phenomena such as.Fuse 3 is based on its above structure, for carrying out overload protection to circuit.Wherein, center is opened up in the end cap 1 to lead to
Hole is extend out to through end cap 1 outside fuse box, unicom circuit for fuse 3；Wherein, uniformly coated in the fuse 3 multiple
Temperature-sensitive expanded spheres, when in temperature-sensitive expanded spheres by electric current be more than its rated current, the temperature-sensitive expanded spheres, which are expanded to, bursts fuse
3, fuse box disconnecting circuit.
In another embodiment, the temperature-sensitive expanded spheres are macromolecular PTC thermistor, and macromolecular PTC thermistor is adopted
Polymer resin and the uniformly distributed carbon black composition being distributed in inside it, are currently used thermistor.It is low in electric current
When rated current, carbon black is closely strapped in outside crystalloid structure by polymer resin, forms chain conduction electric pathway, at this time
Temperature-sensitive expanded spheres for low resistance pattern, 4 normal power-up of fuse 3 and indicating mechanism flows through thermal energy caused by electric current on circuit
It is small, temperature-sensitive expanded spheres crystal structure will not be changed.As shown in Figures 2 and 3, when short circuit or overload occur for circuit, it is swollen to flow through temperature-sensitive
The heat that the electric current of swollen ball generates melts polymer resin, and volume increases rapidly, and also rapid fever, contactor disconnect fuse 3,
At this point, temperature-sensitive expanded spheres, which are expanded to, bursts fuse 3, service personnel observes the breaking state of fuse 3 from glass tube 2, is not required to use
Detection equipment detection judges cartridge fuse, realizes quick detection and observation fuse box state.
Although the embodiment of the utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to the field of various suitable the utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (5)
1. a kind of fuse box with fusing indicating mechanism, which is characterized in that including：
Glass tube is the hollow tube of both ends open；
Fuse, is laid in the glass tube and both ends connect circuit, for carrying out overload protection to circuit；
End cap is fastened on the both ends open of the glass tube；Central through hole is opened up in the end cap, for fuse through end
Cap is extend out to outside fuse box；
Wherein, multiple temperature-sensitive expanded spheres are uniformly coated in the fuse, when in temperature-sensitive expanded spheres by electric current be more than its specified electricity
Stream, the temperature-sensitive expanded spheres, which are expanded to, bursts fuse, fuse box disconnecting circuit.
2. the fuse box with fusing indicating mechanism as described in claim 1, which is characterized in that the glass tube is transparent
Glass tube, for observing internal fuse state.
3. the fuse box with fusing indicating mechanism as described in claim 1, which is characterized in that the fuse closes for lead antimony
Spun gold.
4. there is the fuse box of fusing indicating mechanism as claimed in claim 2 or claim 3, which is characterized in that the temperature-sensitive expansion
Ball is macromolecular PTC thermistor.
5. the fuse box with fusing indicating mechanism as claimed in claim 4, which is characterized in that the end cap is plating nickel yellow
Copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721193384.9U CN207425771U (en) | 2017-09-18 | 2017-09-18 | A kind of fuse box with fusing indicating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721193384.9U CN207425771U (en) | 2017-09-18 | 2017-09-18 | A kind of fuse box with fusing indicating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207425771U true CN207425771U (en) | 2018-05-29 |
Family
ID=62312638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721193384.9U Expired - Fee Related CN207425771U (en) | 2017-09-18 | 2017-09-18 | A kind of fuse box with fusing indicating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207425771U (en) |
-
2017
- 2017-09-18 CN CN201721193384.9U patent/CN207425771U/en not_active Expired - Fee Related
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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: 20180529 Termination date: 20180918 |