CN204834219U - Thermistor with fuse - Google Patents
Thermistor with fuse Download PDFInfo
- Publication number
- CN204834219U CN204834219U CN201520530059.1U CN201520530059U CN204834219U CN 204834219 U CN204834219 U CN 204834219U CN 201520530059 U CN201520530059 U CN 201520530059U CN 204834219 U CN204834219 U CN 204834219U
- Authority
- CN
- China
- Prior art keywords
- fuse
- ntc thermistor
- lead wire
- thermistor
- lead
- 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.)
- Active
Links
Abstract
The utility model relates to a thermistor especially relates to a NTC thermistor who has the fuse, mainly includes: an insulating layer, the ceramic chip, the fuse, soldering tin and lead wire, the lead wire is equipped with the fuse, the ceramic chip, fuse and soldering tin are by the insulating layer embedment or seal, two lead wire one end are fixed on the electrode of ceramic chip both sides through soldering tin respectively, two lead wire other ends are worn out from the insulating layer, the ceramic chip is NTC thermistor, the fuse is the temperature fuse, both press close to, the lead wire is equipped with a fuse at least, NTC thermistor's the electric current of flowing through is too big, lead to the high temperature, electronic component causes the damage to equipment, protect whole circuit arrangement through the installation insurance silk, realize triple protections, be the protection of NTC thermistor self characteristic respectively, through NTC thermistor temperature fuse self the disconnection protection under indirect break -off signal fuse protection and the current abnormality increase situation of generating heat under the unreasonable increase situation of electric current, avoid the high temperature to damage the electron original paper in the circuit, avoid arousing the conflagration.
Description
Technical field
The utility model relates to a kind of thermistor, particularly relates to a kind of NTC thermistor with fuse.
Background technology
Thermistor is widely used in all kinds of Switching Power Supply, electronic energy-saving lamp, electric ballast, the various electronic device power circuit protection field such as charger, power circuit produced in the moment of start larger surge current, electric current is excessive easily to cause damage to serial connection other electronic products in a power, current thermistor is at the timely and effective surge current suppression of moment energy that power circuit is started shooting, but thermistor is along with the prolongation of operating time simultaneously, and at a higher temperature always, produce and have higher heat, add product to be energized for a long time loading, even work exceeding under its steady-state current, usual thermistor loses other electronic product effects of protection because of high temperature aging at loading, power circuit is caused to there is certain potential safety hazard.The more important thing is that in circuit, the fuse blow reliability that designs is limited when occurring that electric current is unreasonable and increasing, time have security incident to occur.Thermal Cutoffs is also called temperature fuse, is temperature sense loop shearing device.
Summary of the invention
The purpose of this utility model is for the existing state of the art, provides a kind of NTC thermistor with fuse, realizes utilizing NTC to increase the characteristic of temperature rising with electric current, guarantees, when current anomaly increases, to cut off the electricity supply, realize multiple protective.
For achieving the above object, the utility model adopts following technical scheme:
A kind of NTC thermistor with fuse, mainly comprise: insulating barrier, ceramics, fuse, scolding tin and lead-in wire, go between the fuse be provided with for open circuit, ceramics, fuse and scolding tin are by insulating barrier embedding or encapsulating, two lead-in wire one end are fixed on respectively by scolding tin on the electrode of ceramics both sides, two lead-in wire other ends pass from insulating barrier, and described ceramics is NTC thermistor.
Further, described fuse is Thermal Cutoffs.
Further, described lead-in wire is at least provided with a fuse, and ceramics pressed close to by fuse.
Further, described insulating barrier is that resin or organosilicon material structure form.
Such scheme, described insulating barrier periphery can also be provided with casing.
The beneficial effects of the utility model are:
1, the electric current flowing through NTC thermistor is excessive, cause temperature too high, damage is caused to electronic component, whole circuit arrangement is protected by installation insurance silk, thus realize triple protection, its triple protection is respectively the protection of NTC thermistor self-characteristic, under electric current unreasonable increase situation by NTC thermistor generate heat indirect break-off signal fuse protection and current anomaly increase situation under Thermal Cutoffs self disconnect protection, thus avoid the electronic original part in the too high damage circuit of temperature, even cause fire, as: avoid charger for mobile phone to catch fire or the injury causing battery explosion to cause human body of extremely charging,
Although 2 Thermal Cutoffs have high reliability in design, but the abnormal conditions that single Thermal Cutoffs can be dealt with are limited after all, add that the effect of artificial or unforeseen force majeure Thermal Cutoffs of ordering sustains damage and can not normally play a role, cannot cut-off loop in time when then electrical equipment occurs abnormal, two or more therefore will be used to have the Thermal Cutoffs of different fusing-off temperature.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is front view of the present utility model;
Accompanying drawing 3 is the structural representation of the utility model embodiment 2.
embodiment:
Can have the object of the utility model, feature and function to make juror and further understand, hereby lift preferred embodiment and coordinate graphic being described in detail as follows:
Refer to shown in Fig. 1 ~ 2, it is the schematic diagram of the preferred embodiment of the utility model, a kind of NTC thermistor with fuse, mainly comprise: insulating barrier 1, ceramics 2, fuse 3, scolding tin 4 and lead-in wire 5, lead-in wire 5 is provided with the fuse 3 for open circuit, ceramics 2, fuse 3 and scolding tin 4 are by insulating barrier 1 embedding or encapsulating, two lead-in wire 5 one end are fixed on respectively by scolding tin 4 on the electrode of ceramics 2 both sides, two lead-in wire 5 other ends pass from insulating barrier 1, described ceramics 2 is NTC thermistor, described fuse 3 is Thermal Cutoffs, described lead-in wire 5 is at least provided with a fuse 3, ceramics 2 pressed close to by fuse 3, two or more is used to have the Thermal Cutoffs of different fusing-off temperature, guarantee to have at least a fuse 3 normally to play a role, described insulating barrier 1 forms for resin or organosilicon material construct, can not only available protecting fuse 3 and ceramics 2, and fuse 3 can quickly move through the heat that ceramics 2 sends and carrys out open circuit, described fuse 3 fusing-off temperature is 60 DEG C to 320 DEG C.
Embodiment one
The lead-in wire 5 of NTC thermistor is welded in circuit and is energized; its NTC thermistor inside is provided with fuse 3; the electric current I flowed through is larger; impedance Z is less; but cause NTC thermistor temperature higher; when the electric current I flowed through exceeds safe range, go open fuse 3 by the temperature under this electric current, thus realize triple protection:
(1), NTC thermistor carrys out protective circuit according to self-characteristic, plays step-down metering function when electric current is excessive.When circuital current works in reasonable interval, the resistance value of NTC thermistor just declines, and does not affect circuit working;
(2), fuse 3 self disconnect come protective circuit, when the electric current flowing through fuse 3 reaches its regulation maximum, fuse 3, by open circuit, avoids whole circuit persistent fever;
(3), NTC thermistor and fuse 3 cooperatively interact protective circuit, reach design scarcely reasonably big current value time, the temperature of NTC thermistor can raise, and carrys out open fuse 3 by this temperature.Use two or more to have the fuse 3 of different fusing-off temperature, avoid the effect of force majeure fuse 3 of ordering to sustain damage and can not normally play a role.
Embodiment two
Refer to shown in Fig. 3, be arranged with casing 6 outside insulating barrier 1 in such scheme, its insulating barrier 1 is wrapped in NTC thermistor periphery, or directly in casing 6 embedding form insulating barrier 1, NTC thermistor forms double hyer insulation by casing 6 and insulating barrier 1, effectively moistureproof.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model, the technical staff of the industry should understand, the utility model is not restricted to the described embodiments, what describe in above-described embodiment and specification just illustrates principle of the present utility model, under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, these changes and improvements all fall within the scope of claimed the utility model, the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. one kind has the NTC thermistor of fuse, mainly comprise: insulating barrier (1), ceramics (2), fuse (3), scolding tin (4) and lead-in wire (5), it is characterized in that: lead-in wire (5) is provided with the fuse (3) for open circuit, two lead-in wire (5) one end are fixed on respectively by scolding tin (4) on the electrode of ceramics (2) both sides, two lead-in wire (5) other ends pass from insulating barrier (1), ceramics (2), fuse (3) and scolding tin (4) are by insulating barrier (1) embedding or encapsulating, and described ceramics (2) is NTC thermistor.
2. a kind of NTC thermistor with fuse according to claim 1, is characterized in that: described fuse (3) is Thermal Cutoffs.
3. a kind of NTC thermistor with fuse according to claim 2, is characterized in that: described lead-in wire (5) is at least provided with a fuse (3), and ceramics (2) pressed close to by fuse (3).
4. a kind of NTC thermistor with fuse according to claim 2, is characterized in that: described insulating barrier (1) forms for resin or organosilicon material construct.
5. a kind of NTC thermistor with fuse according to claim 4, is characterized in that: described insulating barrier (1) periphery can also be provided with casing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530059.1U CN204834219U (en) | 2015-07-21 | 2015-07-21 | Thermistor with fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530059.1U CN204834219U (en) | 2015-07-21 | 2015-07-21 | Thermistor with fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204834219U true CN204834219U (en) | 2015-12-02 |
Family
ID=54691791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520530059.1U Active CN204834219U (en) | 2015-07-21 | 2015-07-21 | Thermistor with fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204834219U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449814A (en) * | 2018-05-17 | 2018-08-24 | 佛山市海德精工电子科技有限公司 | A kind of heater |
| CN108766853A (en) * | 2018-06-08 | 2018-11-06 | 佛山市仁星电气有限公司 | The main temperature controller of packaged type and temperature control device |
| CN115087258A (en) * | 2021-03-12 | 2022-09-20 | 斯玛特电子公司 | Circuit protection device |
-
2015
- 2015-07-21 CN CN201520530059.1U patent/CN204834219U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449814A (en) * | 2018-05-17 | 2018-08-24 | 佛山市海德精工电子科技有限公司 | A kind of heater |
| CN108766853A (en) * | 2018-06-08 | 2018-11-06 | 佛山市仁星电气有限公司 | The main temperature controller of packaged type and temperature control device |
| CN115087258A (en) * | 2021-03-12 | 2022-09-20 | 斯玛特电子公司 | Circuit protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201656470U (en) | Lightning protection circuit with overcurrent protection function | |
| CN204834219U (en) | Thermistor with fuse | |
| CN102916411A (en) | Surge current suppression circuit | |
| CN203300549U (en) | Temperature fuse protector with dual-protection function | |
| CN203026939U (en) | Novel surge protector | |
| CN205752844U (en) | There is the insert row of load priority management function | |
| CN204834226U (en) | Novel piezo -resistor | |
| CN203300912U (en) | Leakage protection plug with temperature protection | |
| CN205489506U (en) | Thunder and lightning protection circuit for high voltage direct current power supply system | |
| CN202534449U (en) | Cement resistor with temperature fuse wire | |
| CN204144932U (en) | A kind of novel surge protection device | |
| CN204118729U (en) | The lightning protection thermel protection device of three-phase leakage switch | |
| CN103384419A (en) | Self-fusing protecting electric heating device and protecting method thereof | |
| CN203967740U (en) | Can guarantee the novel surge protective device of hot releasing mechanism action | |
| CN202772088U (en) | Lightning protection device capable of automatic release under overcurrent and overheat | |
| CN105322523A (en) | Novel surge protection device | |
| CN204271624U (en) | A kind of novel protector | |
| CN205751736U (en) | A kind of varistor with Double-side hot protection | |
| CN205751735U (en) | A kind of varistor of organic alloy type double protection | |
| CN203607823U (en) | Dry-type transformer coil short circuit protector | |
| CN204144933U (en) | A kind of novel surge protection device | |
| CN203787378U (en) | Over-current protector with voltage-releasing function | |
| CN203504130U (en) | Illumination signal comprehensive protection device | |
| CN201584777U (en) | Power source surge protector | |
| CN202444127U (en) | Power supply current-limiting temperature-control safe socket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |