CN110838396A - Magnetic power-off fuse resistor - Google Patents
Magnetic power-off fuse resistor Download PDFInfo
- Publication number
- CN110838396A CN110838396A CN201911224019.3A CN201911224019A CN110838396A CN 110838396 A CN110838396 A CN 110838396A CN 201911224019 A CN201911224019 A CN 201911224019A CN 110838396 A CN110838396 A CN 110838396A
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- CN
- China
- Prior art keywords
- connecting part
- metal shell
- magnetic
- limiting edge
- fuse resistor
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- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base
Abstract
The invention discloses a magnetic power-off fuse resistor, which comprises a metal shell, wherein a ceramic tube is wrapped on the metal shell, a magnetic temperature fuse is arranged in the metal shell, the temperature fuse comprises a first connecting part and a second connecting part, pins are arranged at the outer ends of the first connecting part and the second connecting part, the pins extend from the two ends of the metal shell to the outer end of the metal shell, a cavity is arranged between the second connecting part and the first connecting part, a bulge is arranged at the center of one end of the first connecting part, which is close to the cavity, a movable groove is formed in the middle of the bulge, a first limiting edge is arranged at the notch of the movable groove, a movable rod is arranged in the movable groove, a second limiting edge is arranged at one end of the movable rod, which is positioned in the movable groove, a compression spring is arranged between the second limiting edge and the first limiting edge, the compression spring is, and the inner side wall of the groove is always contacted with the outer side wall of the protrusion, and the first connecting part is provided with a connecting plate corresponding to the first connecting part.
Description
Technical Field
The invention relates to the field of electronics, in particular to a magnetic power-off fuse resistor.
Background
The fuse resistor device is mainly used for electrical and electronic product equipment and related parts, and is a device for providing overheat protection for electronic products.
Fuses used in the mainstream resistors are all fuse-type fuses, and the fuses are all disposable fuses, do not have recycling value, are easy to cause resource waste, and are not beneficial to cost reduction for manufacturers.
It is therefore desirable to provide a magnetic power-off fuse resistor that utilizes magnetic curie temperature.
Disclosure of Invention
The present invention is directed to a magnetic power-off fuse resistor, which solves the above problems of the prior art. In order to achieve the purpose, the invention provides the following technical scheme:
a magnetic power-off fuse resistor comprises a metal shell, wherein a ceramic tube is wrapped on the metal shell, a resistance wire is wound on the ceramic tube, one end of the metal shell is arranged in an opening manner, a magnetic temperature fuse is arranged in the metal shell, the temperature fuse comprises a first connecting part and a second connecting part, pins are arranged at the outer ends of the first connecting part and the second connecting part, the pins extend from the two ends of the metal shell to the outer end of the metal shell, a cavity is arranged between the second connecting part and the first connecting part, a bulge is arranged at the center of one end, close to the cavity, of the first connecting part, a movable groove is formed in the middle of the bulge, a first limiting edge is arranged at the notch of the movable groove, a movable rod is arranged in the movable groove, a second limiting edge is arranged at one end, located in the movable groove, of the movable rod, a compression spring is arranged, the compression spring cover is located on the movable rod, the one end that the movable rod is outside is connected with the magnetism and connects the cap, seted up on the magnetism and held bellied recess, just the recess inside wall with protruding lateral wall contacts all the time, connecting portion two corresponds connecting portion one is provided with the connecting plate, the connecting plate is made for the gold ferroalloy.
Preferably, the magnetic connecting cap is made of neodymium iron boron magnet.
Preferably, the other end of the metal shell is provided with an opening for the pin to pass through.
Preferably, the opening of the metal shell is filled with an insulating material, and the pin penetrates through the insulating material.
Preferably, the ceramic tube is sleeved with a metal net, and the resistance wire is covered with the metal net.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention utilizes the characteristic that the magnet loses magnetism at high temperature, when the resistor is subjected to large current or large voltage, the generated high temperature can lead the magnetic connecting cap to lose magnetism, and the magnetic connecting cap is separated from the connecting plate under the action of the spring, thereby realizing the effect of cutting off the circuit and protecting the electronic equipment.
2. The metal net is sleeved on the ceramic tube, so that the normal work of the resistor is ensured by utilizing the Faraday cage principle, and the external current is prevented from stimulating the resistor.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a thermal fuse according to the present invention;
FIG. 3 is an enlarged view of the invention at A.
In the figure: 1-resistance wire; 2-a pin; 3-an insulating material; 4-a magnetic coupling cap; 5-a movable rod; 6-metal housing; 7-a second limiting edge; 8-compression spring; 9-limiting edge one; 10-connecting part I, 11-connecting part II, 12-connecting plate, 13-ceramic tube, 14-bulge and 15-movable groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a magnetic power-off fuse resistor comprises a metal shell 6, wherein a ceramic tube 13 is wrapped on the metal shell 6, a resistance wire 1 is wound on the ceramic tube 13, one end of the metal shell 6 is arranged in an opening mode, a magnetic temperature fuse is arranged in the metal shell 6 and comprises a first connecting part 10 and a second connecting part 11, pins 2 are arranged at the outer ends of the first connecting part 10 and the second connecting part 11, the pins 2 extend from the two ends of the metal shell 6 to the outer end of the metal shell 6, a cavity is arranged between the second connecting part 11 and the first connecting part 10, a protrusion 14 is arranged at the center of one end, close to the cavity, of the first connecting part 10, a movable groove 15 is formed in the middle of the protrusion 14, a first limiting edge 9 is arranged at the notch of the movable groove 15, a movable rod 185 is arranged in the movable groove 15, and a second limiting edge 7 is arranged at one end, located in the movable groove 15, of, spacing limit two 7 with be provided with compression spring 8 between the spacing limit 9, 8 covers of compression spring are located on the movable rod 185, the one end that the movable rod 185 outwards is connected with magnetism and is connected cap 3, seted up on the magnetism and connected cap 3 and held protruding 14 recess, just the recess inside wall with protruding 14 lateral wall contacts all the time, connecting portion two 11 correspond connecting portion one 10 is provided with connecting plate 12, connecting plate 12 is made for the gold ferroalloy.
In the examples: the cap 3 is connected for neodymium iron boron magnet to make to magnetism, neodymium iron boron magnet's curie temperature is 312 degrees, its limit operating temperature is 80 degrees to 180 degrees, its temperature is less than this temperature when the resistor normally works, when receiving big voltage or heavy current to heat up to this temperature interval, the magnetism of cap 3 is connected to magnetism begins to descend, until the magnetism of cap 3 is connected to magnetism when the elasticity of offsetting the spring, thereby the cap 3 is connected to magnetism leaves connecting plate 12 under the effect of spring and realizes the resistor outage, when need resume when connecting cap 3's magnetic force with the resistor as for in the high magnetic field, can realize connecting cap 3 magnetization to magnetism.
In the examples: the other end of the metal shell 6 is provided with an opening for the pin 2 to pass through.
In the examples: the opening of the metal shell 6 is filled with an insulating material 3, and the pin 2 penetrates through the insulating material 3.
In the examples: the ceramic tube 13 is sleeved with a metal net, the metal net covers the resistance wire 1, and the resistance wire 1 is protected by a Faraday cage.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a magnetism outage formula fuse resistor, includes metal casing, the parcel has ceramic pipe on the metal casing, the winding has resistance wire, its characterized in that on the ceramic pipe: one end of the metal shell is arranged in an opening manner, a magnetic temperature fuse is arranged in the metal shell and comprises a first connecting part and a second connecting part, pins are arranged at the outer ends of the first connecting part and the second connecting part and extend from the two ends of the metal shell to the outer end of the metal shell, a cavity is arranged between the second connecting part and the first connecting part, a bulge is arranged at the center of one end of the first connecting part close to the cavity, a movable groove is formed in the middle of the bulge, a first limiting edge is arranged at the notch of the movable groove, a movable rod is arranged in the movable groove, a second limiting edge is arranged at one end of the movable rod in the movable groove, a compression spring is arranged between the second limiting edge and the first limiting edge, the compression spring is sleeved on the movable rod, and a magnetic connecting cap is connected with the outward end of the movable, the magnetic connecting cap is provided with a groove for accommodating the protrusion, the inner side wall of the groove is in contact with the outer side wall of the protrusion all the time, the connecting portion corresponds to the first connecting portion and is provided with a connecting plate, and the connecting plate is made of gold-iron alloy.
2. A magnetic power-off fuse resistor as claimed in claim 1, wherein: the magnetic connecting cap is made of neodymium iron boron magnet.
3. A magnetic power-off fuse resistor as claimed in claim 1, wherein: the other end of the metal shell is provided with an opening for the pin to pass through.
4. A magnetic power-off fuse resistor as claimed in claim 1, wherein: the opening of the metal shell is filled with an insulating material, and the pin penetrates through the insulating material.
5. A magnetic power-off fuse resistor as claimed in claim 1, wherein: the ceramic tube is sleeved with a metal net, and the resistance wire is covered with the metal net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911224019.3A CN110838396B (en) | 2019-12-04 | 2019-12-04 | Magnetic power-off fuse resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911224019.3A CN110838396B (en) | 2019-12-04 | 2019-12-04 | Magnetic power-off fuse resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110838396A true CN110838396A (en) | 2020-02-25 |
| CN110838396B CN110838396B (en) | 2022-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911224019.3A Active CN110838396B (en) | 2019-12-04 | 2019-12-04 | Magnetic power-off fuse resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110838396B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309907A (en) * | 2021-12-31 | 2022-04-12 | 湖南省安能电子有限公司 | Fuse welding device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006286307A (en) * | 2005-03-31 | 2006-10-19 | Nec Schott Components Corp | Temperature-sensitive pellet type temperature fuse |
| CN101487741A (en) * | 2008-09-08 | 2009-07-22 | 山东省电力分析仪器工程技术研究中心 | Temperature over-range indicator |
| CN103715011A (en) * | 2012-10-09 | 2014-04-09 | 安德鲁有限责任公司 | RF thermal fuse |
| CN205789832U (en) * | 2016-05-24 | 2016-12-07 | 广东工业大学 | A kind of reusable electric fuse |
| CN207909608U (en) * | 2018-02-09 | 2018-09-25 | 惠州市旭程新材料有限公司 | Overheat protector resistor |
| CN109994293A (en) * | 2019-04-28 | 2019-07-09 | 东莞市拓锋电子科技有限公司 | A kind of resistor of built-in metal skin temperature fuse |
| CN110021509A (en) * | 2019-05-22 | 2019-07-16 | 蒋瑾 | A kind of recoverable fuse |
| CN209515350U (en) * | 2019-01-07 | 2019-10-18 | 盛雷城精密电阻（江西）有限公司 | A kind of resistor with high stability |
-
2019
- 2019-12-04 CN CN201911224019.3A patent/CN110838396B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006286307A (en) * | 2005-03-31 | 2006-10-19 | Nec Schott Components Corp | Temperature-sensitive pellet type temperature fuse |
| CN101487741A (en) * | 2008-09-08 | 2009-07-22 | 山东省电力分析仪器工程技术研究中心 | Temperature over-range indicator |
| CN103715011A (en) * | 2012-10-09 | 2014-04-09 | 安德鲁有限责任公司 | RF thermal fuse |
| CN205789832U (en) * | 2016-05-24 | 2016-12-07 | 广东工业大学 | A kind of reusable electric fuse |
| CN207909608U (en) * | 2018-02-09 | 2018-09-25 | 惠州市旭程新材料有限公司 | Overheat protector resistor |
| CN209515350U (en) * | 2019-01-07 | 2019-10-18 | 盛雷城精密电阻（江西）有限公司 | A kind of resistor with high stability |
| CN109994293A (en) * | 2019-04-28 | 2019-07-09 | 东莞市拓锋电子科技有限公司 | A kind of resistor of built-in metal skin temperature fuse |
| CN110021509A (en) * | 2019-05-22 | 2019-07-16 | 蒋瑾 | A kind of recoverable fuse |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309907A (en) * | 2021-12-31 | 2022-04-12 | 湖南省安能电子有限公司 | Fuse welding device |
| CN114309907B (en) * | 2021-12-31 | 2023-08-22 | 湖南省安能电子有限公司 | Fuse welding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110838396B (en) | 2022-05-20 |
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