CN103440943A - Wire-wound thermal fuse resistor - Google Patents
Wire-wound thermal fuse resistor Download PDFInfo
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- CN103440943A CN103440943A CN2013104030711A CN201310403071A CN103440943A CN 103440943 A CN103440943 A CN 103440943A CN 2013104030711 A CN2013104030711 A CN 2013104030711A CN 201310403071 A CN201310403071 A CN 201310403071A CN 103440943 A CN103440943 A CN 103440943A
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Abstract
The invention discloses a wire-wound thermal fuse resistor which is wound by replacing a common resistance wire by employing a composite metal wire. The wire-wound thermal fuse resistor comprises a core rod, two caps and two wires, wherein the caps are sleeved at two ends of the core rod; a composite metal wire is wound on the core rod; two ends of the composite metal wire are respectively connected with the caps at the two ends of the core rod. The used composite metal wire in the resistor is formed by connecting one section of resistance wire and one section of fusible metal wire or connecting multiple sections of resistance wires and fusible metal wires at intervals. The fusible metal wire in the composite metal wire generally consists of a material of which the melting point is relatively low and easily controlled. When the resistor is electrified to work, if the current passing through the resistor is abnormal and the current value is larger than a rated current value, the temperature of the resistor is continuously raised to the fusing temperature of the fusible metal wire in the composite metal wire, so that the fusible metal wire is fused, and the resistor is in open circuit. The fusing temperature can be accurately controlled, and the wire-wound thermal fuse resistor has the advantages of being simple in manufacturing process, reasonable in structure and good in lightning-proof surge performance.
Description
Technical field
The present invention relates to resistor, especially a winding-type Thermal Cutoffs resistor.
Background technology
The structure of existing winding-type fuse-resistor is: the two ends cover of plug has cap, is wound with the conventional, electric-resistance silk on plug, and the two ends of conventional, electric-resistance silk are connected with two blocks respectively, at the flame retardant paint that is externally coated with of plug, cap and conventional, electric-resistance silk.The conventional, electric-resistance silk that the resistor of this structure adopts, be generally metal alloy wires.When the current anomaly by resistor; and when current value is larger over its rated current; resistance wire heating makes the resistor temperature be increased to rapidly the resistance wire melting temperature, before resistor surface and its surrounding environment are carried out abundant exchange heat, produces and fuses, and plays the purpose of protective circuit.Simultaneously, the conventional, electric-resistance silk has certain resistance value, and resistor can play the effect of current limliting when circuit works.But, the fusing point of this conventional, electric-resistance silk is higher, usually more than 600 ℃, thereby make wire wound resistor have potential safety hazard: when the current anomaly by resistor, and current value is greater than its rated current hour, the heat that resistance wire produces is relatively less, simultaneously resistor surface constantly and its surrounding environment carry out heat exchange, the melting temperature that not only can not make the resistor temperature be elevated to rapidly resistance wire produces fusing, and the temperature that causes resistor surface and its surrounding environment is elevated to more than 200 ℃, cause the phenomenon that burns out other devices.
Summary of the invention
The invention provides a kind of winding-type Thermal Cutoffs resistor, this resistor had both had the performance of anti-lightning surge preferably, had again fusing performance preferably, and manufacturing process is simple, and cost is low.
The present invention adopts following scheme to realize: resistor of the present invention adopts clad metal wire to replace conventional, electric-resistance filament winding system to form.Resistor of the present invention, comprise a plug, two caps, two lead-in wires.The two ends cover of plug has cap, is wound around clad metal wire on plug, and the two ends of clad metal wire are connected with the cap at plug two ends respectively, and two caps are connected with each end of two lead-in wires respectively.The flame retardant paint that is externally coated with at plug, cap and clad metal wire.The clad metal wire that resistor of the present invention adopts is to be formed by connecting by resistance wire and each one or more snippets interval of fusible metal silk.Fusible metal silk in clad metal wire, normally relatively low by fusing point, and melting temperature forms than the material that is easier to control, such as: bismuth tin cadmium alloy etc.; The fusible metal silk also can adopt fusing point relatively high, but diameter is thinner, needs the metal material that less heat just can fuse to form, for example: the alloy that silver, copper, tin, indium, bismuth and above-mentioned material form.
In this resistor when normal operation energising, the heat that resistor produces can be constantly and its surrounding environment carry out exchange heat, reach heat balance, resistor and its surrounding environment are in the safe temperature scope, circuit is in normal operating conditions.
When the current anomaly by resistor, and when current value is larger over its rated current, the clad metal wire heating, in the situation that the resistor ambient temperature fails significantly to raise, the resistor temperature has been elevated to rapidly the fusing point of fusible material in clad metal wire, makes clad metal wire fusing, resistor open circuit.
When the current anomaly by resistor, and current value surpasses its rated current hour, and the clad metal wire heating makes the resistor temperature continue to raise, but relatively slow.When the resistor temperature is elevated to the fusing-off temperature of fusible metal silk in clad metal wire, make the fusing of fusible metal silk, the resistor open circuit.In this process, due to exchange heat, the temperature of resistor surrounding environment also can continue to raise, but can be higher than the temperature of resistor.Therefore, by selecting the fusible metal silk of reasonable fusing-off temperature, realize the control resistor fusing-off temperature, reach the purpose of protective circuit.
Compared with prior art, the present invention not only can control fusing-off temperature more exactly, also has manufacturing process simple, rational in infrastructure, the advantage that the anti-lightning surge capability is good simultaneously.
The accompanying drawing explanation
A kind of version schematic diagram that Fig. 1 is resistor of the present invention.
Other the first version schematic diagrames that Fig. 2 is resistor of the present invention.
Other the second version schematic diagrames that Fig. 3 is resistor of the present invention.
Other the third version schematic diagrames that Fig. 4 is resistor of the present invention.
Fig. 5 is a kind of version schematic diagram that resistor of the present invention relates to clad metal wire.
Fig. 6 is another version schematic diagram that resistor of the present invention relates to clad metal wire.
The tool present embodiment
Below in conjunction with accompanying drawing, the present invention is described
As shown in Figure 1, the present invention adopts the wire wound resistor of clad metal wire coiling, and its version comprises: plug 5, two caps 2, two lead-in wires 1.The two ends cover of plug 5 has cap 2, is wound around clad metal wire 4 on plug, and the two ends of clad metal wire 4 are connected with the cap 2 at plug 5 two ends respectively.Two caps 2 are connected with each end of two lead-in wires 1 respectively.Be coated with flame retardant paint 3 at plug 5, cap 2 with the outside of clad metal wire 4.
As shown in Figure 2, for other the first versions of the present invention, be on the basis of Fig. 1 version, two caps 2 are connecting lead wire not, but and be coated with layer 6 in cap 2 outsides, thereby form the form of Chip-R.Comprise: plug 5, two caps 2.The two ends cover of plug 5 has cap 2, is wound around clad metal wire 4 on plug, and the two ends of clad metal wire 4 are connected with the cap 2 at plug 5 two ends respectively.Outside at plug 5, clad metal wire 4 is coated with flame retardant paint 3, but is coated with layer 6 two cap outsides.This resistance can be for the paster processing technology of circuit.
As shown in Figure 3, be other the second versions of the present invention, be to be processed into the cement resistor with same function on the basis of Fig. 1, comprising: resistor rod 9, filling entity 11 and porcelain shell 10.Porcelain shell 10 has the cavity volume that holds resistor rod 9 bodies, and has the guidewire port that can pass for resistor rod 9 lead-in wires.Also be provided with the filling entity 11 of fixed resistance rod 9 in this resistor porcelain shell 10 cavity volumes, be generally jelly or cement etc., but this fill entity 11 solidify after fixed resistance rod 9.The lead-in wire of resistor rod 9 is to pass respectively from the guidewire port of porcelain shell 10 both sides.
As shown in Figure 4, be other the third versions of the present invention, its internal structure is similar to Fig. 3, and difference is: the lead-in wire of resistor rod 9 is to pass respectively from two guidewire ports of porcelain shell 10 the same sides.
As shown in Figure 5, the clad metal wire 4 that resistor of the present invention adopts, be by resistance wire 7 and fusible metal silk 8 each section be formed by connecting.
As shown in Figure 6, the clad metal wire 4 that resistor of the present invention adopts, be to be formed by connecting by resistance wire 7 and fusible metal silk 8 each multistage intervals.
Claims (8)
1. winding-type Thermal Cutoffs resistor, its a kind of version comprises: plug, two caps, two lead-in wires, it is characterized in that: the two ends cover of plug has cap, be wound around clad metal wire on plug, the two ends of clad metal wire are connected with the cap at plug two ends respectively, cap is connected with each end of two lead-in wires respectively, in the outside of plug, cap and clad metal wire, is coated with flame retardant paint.
2. winding-type Thermal Cutoffs resistor, other the first versions comprise: plug, two caps, it is characterized in that: the two ends cover of plug has cap, be wound around clad metal wire on plug, the two ends of clad metal wire are connected with the cap at plug two ends respectively, outside at plug, clad metal wire is coated with flame retardant paint, but is coated with layer two cap outsides.
3. winding-type Thermal Cutoffs resistor, other the second versions comprise: resistor rod, filling entity and porcelain shell, it is characterized in that: the porcelain shell has the cavity volume that holds the resistor rod body, and there is the guidewire port that can pass for resistor rod lead-in wire, also be provided with the filling entity of fixed resistance rod in this resistor porcelain shell cavity volume, be generally jelly or cement etc., but this fill entity solidify after the fixed resistance rod, the lead-in wire of resistor rod passes respectively from the guidewire port of porcelain shell both sides.
4. winding-type Thermal Cutoffs resistor, other the third versions comprise: resistor rod, filling entity and porcelain shell, it is characterized in that: the porcelain shell has the cavity volume that holds the resistor rod body, and there is the guidewire port that can pass for resistor rod lead-in wire, also be provided with the filling entity of fixed resistance rod in this resistor porcelain shell cavity volume, be generally jelly or cement etc., but this fill entity solidify after the fixed resistance rod, the lead-in wire of resistor rod is to pass respectively from two guidewire ports of porcelain shell the same side.
5. according to claim 1, claim 2, winding-type Thermal Cutoffs resistor is characterized in that: on the plug of resistor, be wound with the clad metal wire be formed by connecting by resistance wire and each one or more snippets interval of fusible metal silk.
6. according to claim 3 and claim 4, the resistor rod the present invention relates to, comprise a plug, two caps, the two ends cover of plug has cap, be wound around clad metal wire on plug, the two ends of clad metal wire are connected with the cap at plug two ends respectively, and two caps are connected with each end of two lead-in wires respectively, it is characterized in that: on the plug of resistor, be wound with the clad metal wire be formed by connecting by resistance wire and each one or more snippets interval of fusible metal silk.
7. according to claim 5, claim 6, the clad metal wire that winding-type Thermal Cutoffs resistor relates to is characterized in that: clad metal wire is to be formed by connecting by resistance wire and each one or more snippets interval of fusible metal silk.
8. according to claim 7, the fusible metal silk that winding-type Thermal Cutoffs resistor relates to, normally relatively low by fusing point, and melting temperature forms than the material that is easier to control, such as: bismuth tin cadmium alloy etc.; The fusible metal silk also can adopt fusing point relatively high, but diameter is thinner, needs the metal material that less heat just can fuse to form, for example: the alloy that silver, copper, tin, indium, bismuth and above-mentioned material form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104030711A CN103440943A (en) | 2013-09-02 | 2013-09-02 | Wire-wound thermal fuse resistor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104030711A CN103440943A (en) | 2013-09-02 | 2013-09-02 | Wire-wound thermal fuse resistor |
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| Publication Number | Publication Date |
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| CN103440943A true CN103440943A (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013104030711A Pending CN103440943A (en) | 2013-09-02 | 2013-09-02 | Wire-wound thermal fuse resistor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575564A (en) * | 2016-01-29 | 2016-05-11 | 太仓弘杉环保科技有限公司 | Cement resistor |
| TWI555052B (en) * | 2014-08-19 | 2016-10-21 | 可穆特克浪涌股份有限公司 | Fuse intergrated resistor assembly |
| CN106229241A (en) * | 2016-08-29 | 2016-12-14 | 杜尧生 | Fusing resistor |
| CN107872926A (en) * | 2017-10-27 | 2018-04-03 | 温州市洞头立德电子有限公司 | A kind of circuit board with lighting function |
| CN108039255A (en) * | 2017-12-22 | 2018-05-15 | 南京萨特科技发展有限公司 | A kind of fuse-resistor and preparation method thereof |
| CN110580992A (en) * | 2019-08-26 | 2019-12-17 | 深圳原能电器有限公司 | Novel over-temperature protection fuse resistor |
| CN111243802A (en) * | 2020-01-15 | 2020-06-05 | 东莞市凯立锐智能科技有限公司 | Leadless resistor with auxiliary lead and welding method |
| CN112562945A (en) * | 2020-12-22 | 2021-03-26 | 东莞市贝特电子科技股份有限公司 | Fuse resistor with low surface temperature and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008016940U1 (en) * | 2008-12-23 | 2009-03-26 | Türk & Hillinger GmbH | Electrical resistance |
| CN201327748Y (en) * | 2008-12-23 | 2009-10-14 | 郑东浩 | Stable type safety fusing resistor |
| CN202008889U (en) * | 2011-01-19 | 2011-10-12 | 胡枝清 | Anti-surge and anti-explosion winding resistor |
| CN202405021U (en) * | 2011-11-17 | 2012-08-29 | 深圳市格瑞特电子有限公司 | Fixed fusing resistor |
| CN202534449U (en) * | 2012-02-06 | 2012-11-14 | 广东福德电子有限公司 | Cement resistor with temperature fuse wire |
-
2013
- 2013-09-02 CN CN2013104030711A patent/CN103440943A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008016940U1 (en) * | 2008-12-23 | 2009-03-26 | Türk & Hillinger GmbH | Electrical resistance |
| CN201327748Y (en) * | 2008-12-23 | 2009-10-14 | 郑东浩 | Stable type safety fusing resistor |
| CN202008889U (en) * | 2011-01-19 | 2011-10-12 | 胡枝清 | Anti-surge and anti-explosion winding resistor |
| CN202405021U (en) * | 2011-11-17 | 2012-08-29 | 深圳市格瑞特电子有限公司 | Fixed fusing resistor |
| CN202534449U (en) * | 2012-02-06 | 2012-11-14 | 广东福德电子有限公司 | Cement resistor with temperature fuse wire |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555052B (en) * | 2014-08-19 | 2016-10-21 | 可穆特克浪涌股份有限公司 | Fuse intergrated resistor assembly |
| CN105575564A (en) * | 2016-01-29 | 2016-05-11 | 太仓弘杉环保科技有限公司 | Cement resistor |
| CN106229241A (en) * | 2016-08-29 | 2016-12-14 | 杜尧生 | Fusing resistor |
| CN107872926A (en) * | 2017-10-27 | 2018-04-03 | 温州市洞头立德电子有限公司 | A kind of circuit board with lighting function |
| CN108039255A (en) * | 2017-12-22 | 2018-05-15 | 南京萨特科技发展有限公司 | A kind of fuse-resistor and preparation method thereof |
| CN110580992A (en) * | 2019-08-26 | 2019-12-17 | 深圳原能电器有限公司 | Novel over-temperature protection fuse resistor |
| CN111243802A (en) * | 2020-01-15 | 2020-06-05 | 东莞市凯立锐智能科技有限公司 | Leadless resistor with auxiliary lead and welding method |
| CN112562945A (en) * | 2020-12-22 | 2021-03-26 | 东莞市贝特电子科技股份有限公司 | Fuse resistor with low surface temperature and preparation method thereof |
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Application publication date: 20131211 |