CN206602093U - A kind of overheat protective structure - Google Patents
A kind of overheat protective structure Download PDFInfo
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- CN206602093U CN206602093U CN201720318952.7U CN201720318952U CN206602093U CN 206602093 U CN206602093 U CN 206602093U CN 201720318952 U CN201720318952 U CN 201720318952U CN 206602093 U CN206602093 U CN 206602093U
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- fusible alloy
- heater members
- protective structure
- overheat protective
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Abstract
The utility model belongs to electric protective device technical field; more particularly to a kind of overheat protective structure; including lead, fusible alloy and heater members; the two ends of fusible alloy are electrically connected with lead respectively; heater members are electrically connected at fusible alloy; and along the circumferentially disposed of fusible alloy, the spacing W between fusible alloy and heater members is 0.1 ~ 2.5mm, and the fusing point of fusible alloy is 80 ~ 500 DEG C.On the one hand, the utility model replaces existing organic resin by using fusible alloy, the overall volume of overheat protective structure can not only be reduced, while sensitivity and the accuracy of fusing can also be improved；On the other hand, the utility model is by strictly controlling the installation site between fusible alloy and heater members, the effect for gathering and balancing heat can be effectively played, the heats of heater members is avoided to surrounding loss, so that fusible alloy can be realized in time, accurately fuse, and make product power consumption lower, it is more safe and reliable.
Description
Technical field
The utility model belongs to electric protective device technical field, more particularly to a kind of overheat protective structure.
Background technology
At present, overtemperature protection system application is quite extensive, and existing overtemperature protection system is general using organic resin as molten
Body is simultaneously wired in component to be protected, and when overloading or short circuit current flow is by melt, melt itself is by heating
Fusing, so that various electrical equipments and household electrical appliance are all played with certain protective effect.
However, existing overtemperature protection system but has the following disadvantages：On the one hand, existed using organic resin as melt
The problem of monovalent height and shape bigger than normal so that overtemperature protection system uniformity is poor, and breaking capacity is weak, and relative power consumption is larger；It is another
Aspect, the position relationship between not strict control component and melt, causes heat to disperse, fusing is difficult, so as to extend melt
Fusing time, prevent melt from being fused rapidly in the stipulated time, its harm brought is to burn out associated device and cause
The danger of fire.
In view of this, it is necessory to be improved further to existing overheat protective structure, to reduce its relative power consumption,
Its breaking capacity is improved, realizes and rapidly, accurately fuses.
Utility model content
The purpose of this utility model is：In view of the shortcomings of the prior art, a kind of small volume, simple in construction, peace are provided
Complete reliable overheat protective structure, to solve that existing overheat protective structure relative power consumption is high, uniformity is poor, breaking capacity is weak,
The problem of can not precisely fusing.
To achieve the above object, the utility model is adopted the following technical scheme that：
A kind of overheat protective structure, including lead, fusible alloy and heater members, the two ends of the fusible alloy respectively with
The lead is electrically connected with, and the heater members are electrically connected at the fusible alloy, and are set along the circumference of the fusible alloy
Put, the spacing W between the fusible alloy and the heater members is 0.1 ~ 2.5mm, the fusing point of the fusible alloy for 80 ~
500℃。
Wherein, the utility model overheat protective structure can be used in direct current or alternating current circuit, be used as current limit or isolation
Error protection use, also it is solderable on circuit boards, be used as device and system overload and short circuit current flow protection；And this practicality is new
Type can be used after used aloned or multiple serial or parallel connections.
Specific work process of the present utility model is：When electric current is in the range of rated current by overheat protective structure,
Overheat protective structure is in thermal equilibrium state, and fusible alloy temperature is held essentially constant, and alloy material does not corrode overtemperature protection knot
Structure lead material, circuit is in safe operation state；When electric current exceedes rated current by overheat protective structure, thermal balance quilt
Break, fusible alloy temperature rises, overheat protective structure resistance synchronously becomes big, simultaneously because between fusible alloy and heater members
Short spacing heat build-up effect so that the caloric value of overheat protective structure be more than heat dissipation capacity, fusible alloy temperature rapidly rise simultaneously
Its melting temperature is reached, melting and eating off overheat protective structure lead material occur for fusible alloy, so that protection circuit is safe.
Improved as one kind of the utility model overheat protective structure, between the fusible alloy and the heater members
Spacing W is 1 ~ 2mm, and the fusing point of the fusible alloy is 100 ~ 300 DEG C.
Improved as one kind of the utility model overheat protective structure, between the fusible alloy and the heater members
Spacing W is 1.5mm, and the fusing point of the fusible alloy is 200 DEG C.
Improved as one kind of the utility model overheat protective structure, the heater members are internally provided with connecting hole, institute
Fusible alloy is stated to be arranged in the connecting hole.
Improved as one kind of the utility model overheat protective structure, the heater members are with the fusible alloy for side by side
Set.
Improved as one kind of the utility model overheat protective structure, the outer surface of the fusible alloy is provided with insulating bag
Coating, plays the insulation and protective effect to fusible alloy.
Improved as one kind of the utility model overheat protective structure, the fusible alloy is gun-metal, sn-ag alloy
Or tin pewter, it can specifically be selected according to actual needs, as long as fusible alloy disclosure satisfy that above-mentioned melting range.
Compared to prior art, on the one hand, the utility model replaces existing organic resin by using fusible alloy, no
The overall volume of overheat protective structure can be only reduced, while sensitivity and the accuracy of fusing can also be improved；On the other hand, originally
Utility model can effectively play by strictly controlling the installation site between fusible alloy and heater members and gather and balance heat
The effect of amount, it is to avoid the heat of heater members is to surrounding loss, so that fusible alloy can be realized in time, accurately fuse,
The breaking capacity of overheat protective structure is effectively improved, and makes product power consumption lower, it is more safe and reliable.
In addition, the utility model also provides another overheat protective structure, including lead, fusible alloy and heating element
Part, one end of the fusible alloy is electrically connected with the lead, and the heater members are electrically connected at the fusible alloy
The other end, and along the axially arranged of the fusible alloy, the spacing L between the fusible alloy and the heater members be less than or
Equal to 2.5mm, the fusing point of the fusible alloy is 80 ~ 500 DEG C.
Improved as one kind of the utility model overheat protective structure, between the fusible alloy and the heater members
Spacing L is 1 ~ 2mm, and the fusing point of the fusible alloy is 100 ~ 300 DEG C.
Improved as one kind of the utility model overheat protective structure, between the fusible alloy and the heater members
Spacing L is 1.5mm, and the fusing point of the fusible alloy is 200 DEG C.
Improved as one kind of the utility model overheat protective structure, the outer surface of the fusible alloy is provided with insulating bag
Coating, plays the insulation and protective effect to fusible alloy.
Improved as one kind of the utility model overheat protective structure, the fusible alloy is gun-metal, sn-ag alloy
Or tin pewter, it can specifically be selected according to actual needs, as long as fusible alloy disclosure satisfy that above-mentioned melting range.
Compared to prior art, on the one hand, the utility model replaces existing organic resin by using fusible alloy, no
The overall volume of overheat protective structure can be only reduced, while sensitivity and the accuracy of fusing can also be improved；On the other hand, originally
Utility model can effectively play by strictly controlling the installation site between fusible alloy and heater members and gather and balance heat
The effect of amount, it is to avoid the heat of heater members is to surrounding loss, so that fusible alloy can be realized in time, accurately fuse,
The breaking capacity of overheat protective structure is effectively improved, and makes product power consumption lower, it is more safe and reliable.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment one in the utility model.
Fig. 2 is the structural representation of embodiment two in the utility model.
Fig. 3 is the structural representation of embodiment three in the utility model.
Fig. 4 is the structural representation of example IV in the utility model.
In figure：1- leads；2- fusible alloys；3- heater members.
Embodiment
With reference to embodiment and Figure of description, the utility model is described in further detail, but this
The embodiment not limited to this of utility model.
Embodiment one
As shown in figure 1, a kind of overheat protective structure, including lead 1, fusible alloy 2 and heater members 3, fusible alloy 2
Two ends are electrically connected with lead 1 respectively, and fusible alloy 2 is also electrically connected with heater members 3, and heater members 3 are tubular structure, hair
Thermal device 3 is internally provided with connecting hole, and fusible alloy 2 is arranged in connecting hole, in the outer wall and heater members 3 of fusible alloy 2
Spacing W between wall is 0.1mm；Wherein, fusible alloy 2 be gun-metal, sn-ag alloy or tin pewter, fusible alloy 2
Fusing point is 80 ~ 500 DEG C.
Wherein, the overheat protective structure can be used in direct current or alternating current circuit, be protected as current limit or isolated fault
With, also it is solderable on circuit boards, be used as device and system overload and short circuit current flow protection；And the utility model can be single
Using or multiple serial or parallel connections after use.
Concrete operating principle of the present utility model is：When electric current is in the range of rated current by overheat protective structure,
Overheat protective structure is in thermal equilibrium state, and the temperature of fusible alloy 2 is held essentially constant, and alloy material does not corrode overtemperature protection knot
The material of structure lead 1, circuit is in safe operation state；When electric current exceedes rated current by overheat protective structure, thermal balance
It is broken, the temperature of fusible alloy 2 rises, overheat protective structure resistance synchronously becomes big, simultaneously because fusible alloy 2 and heater members
The heat build-up effect of short spacing between 3 so that the caloric value of overheat protective structure is more than heat dissipation capacity, and the temperature of fusible alloy 2 is rapid
Rise and reach its melting temperature, melting and the material of eating off overheat protective structure lead 1 occur for fusible alloy 2, so as to protect electricity
Road safety.
Embodiment two
From unlike embodiment one, as shown in Fig. 2 for side by side between heater members 3 and fusible alloy 2 in the present embodiment
Set, the spacing W between the lower surface of fusible alloy 2 and the upper surface of heater members 3 is 2.5mm；In addition, in fusible alloy 2
Outer surface sets insulating coating, so that fusible alloy 2 is insulated and protected.
Other structures be the same as Example one, is repeated no more here.
Embodiment three
As shown in figure 3, a kind of overheat protective structure, including lead 1, fusible alloy 2 and heater members 3, fusible alloy 2
One end is electrically connected with lead 1, and heater members 3 are electrically connected at the other end of fusible alloy 2, and along the axial direction of fusible alloy 2
Set, the spacing L between the end face of fusible alloy 2 and the end face of heater members 3 is 2.5mm；Wherein, fusible alloy 2 be gun-metal,
Sn-ag alloy or tin pewter, the fusing point of fusible alloy 2 is 80 ~ 500 DEG C；In the outer surface of fusible alloy 2, insulating wrapped is set
Layer, so that fusible alloy 2 is insulated and protected.
Example IV
From unlike embodiment three, as shown in figure 4, one end of fusible alloy 2 electrically connects with lead 1 in the present embodiment
Connect, the other end of fusible alloy 2 is directly electrically connected with heater members 3.
Other structures be the same as Example three, is repeated no more here.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and changed.Therefore, the utility model is not limited to above-mentioned embodiment, every this area skill
It is new that art personnel any conspicuously improved, replacement made on the basis of the utility model or modification belong to this practicality
The protection domain of type.Although in addition, having used some specific terms in this specification, these terms are intended merely to convenient say
It is bright, any limitation is not constituted to the utility model.
Claims (8)
1. a kind of overheat protective structure, it is characterised in that：Including lead, fusible alloy and heater members, the fusible alloy
Two ends are electrically connected with the lead respectively, and the heater members are electrically connected at the fusible alloy, and along the easy fusion
Golden is circumferentially disposed, and the spacing W between the fusible alloy and the heater members is 0.1 ~ 2.5mm, the fusible alloy
Fusing point is 80 ~ 500 DEG C.
2. overheat protective structure according to claim 1, it is characterised in that：The fusible alloy and the heater members it
Between spacing W be 1 ~ 2mm, the fusing point of the fusible alloy is 100 ~ 300 DEG C.
3. overheat protective structure according to claim 1, it is characterised in that：The heater members are internally provided with connection
Hole, the fusible alloy is arranged in the connecting hole.
4. overheat protective structure according to claim 1, it is characterised in that：The heater members are with the fusible alloy
It is arranged side by side.
5. overheat protective structure according to claim 1, it is characterised in that：The outer surface of the fusible alloy is provided with absolutely
Edge clad.
6. a kind of overheat protective structure, it is characterised in that：Including lead, fusible alloy and heater members, the fusible alloy
One end and the lead are electrically connected with, and the heater members are electrically connected at the other end of the fusible alloy, and along it is described easily
The axially arranged of gold is fused, the spacing L between the fusible alloy and the heater members is less than or equal to 2.5mm, described easy
The fusing point of fusion gold is 80 ~ 500 DEG C.
7. overheat protective structure according to claim 6, it is characterised in that：The fusible alloy and the heater members it
Between spacing L be 1 ~ 2mm, the fusing point of the fusible alloy is 100 ~ 300 DEG C.
8. overheat protective structure according to claim 6, it is characterised in that：The outer surface of the fusible alloy is provided with absolutely
Edge clad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318952.7U CN206602093U (en) | 2017-03-29 | 2017-03-29 | A kind of overheat protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318952.7U CN206602093U (en) | 2017-03-29 | 2017-03-29 | A kind of overheat protective structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206602093U true CN206602093U (en) | 2017-10-31 |
Family
ID=60146110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720318952.7U Active CN206602093U (en) | 2017-03-29 | 2017-03-29 | A kind of overheat protective structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206602093U (en) |
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2017
- 2017-03-29 CN CN201720318952.7U patent/CN206602093U/en active Active
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