CN206619455U - High-insulativity negative tempperature coefficient thermistor - Google Patents
High-insulativity negative tempperature coefficient thermistor Download PDFInfo
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- CN206619455U CN206619455U CN201720130978.9U CN201720130978U CN206619455U CN 206619455 U CN206619455 U CN 206619455U CN 201720130978 U CN201720130978 U CN 201720130978U CN 206619455 U CN206619455 U CN 206619455U
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Abstract
The utility model discloses a kind of high-insulativity negative tempperature coefficient thermistor, including ceramic package and positioned at the ceramic corpusculum of Ceramic shell internal, lead wire is provided with below the ceramic corpusculum, the ceramic package front openings formation space part, lower section is exported provided with lead wire, and the lead wire is exported through the lead wire；The two bottom sides of the ceramic package, which are provided between guide protrusions, the guide protrusions, is provided with spacer portion；Resin facies posterior hepatis is filled between the space part of the ceramic package and ceramic corpusculum, thermistor small volume disclosed in the utility model, insulating properties and durability are good.
Description
Technical field
The utility model is related to a kind of high-insulativity negative tempperature coefficient thermistor.
Background technology
Thermistor refers in order to which treatment temperature changes, and is partly led using what the principle of the change in resistance of semiconductor made
Volume elements part.Thermistor changes small over time, in addition to temperature factor, and the reaction to the other factors such as electrically and magnetically is insensitive.
Therefore, it is widely used in temperature sensor, business automation equipment temperature sensor, automobile and the industrial equipment of household appliances
Temperature control sensor etc. of detection temperature and control temperature almost most of household electrical appliances and industrial equipment.Thermistor can be controlled effectively
Surge current processed, helps to ensure that using for product is safe, helps to extend the service life of peripheral circuit element, so as to
Ensure the stability using equipment.
Thermistor includes：The positive temperature system of the positive temperature characterisitic of resistance value moment sharp increase can be represented in specified temp
Count (PTC) thermistor and represent that resistance value gently reduces negative temperature coefficient (NTC) thermistor of characteristic in specified temp
Deng.Particularly negative temperature coefficient (NTC) thermistor should meet the electrical characteristic that resistance is reduced with the rise of temperature, with
The change of use environment and the passage of use time should occur characteristic variations within the limits prescribed.So, thermistor is not only
Possess firm durability structure, should also use insulating materials to protect, during the use of product, must not because with surrounding
Fire or accident occur for the reasons such as the contact of part.
Therefore, most thermistors are to sinter more than 3 kinds metal oxide powders in high temperature to be fabricated by.Specifically
Ground is said, forms electrode at the two ends of ceramic corpusculum, lead wire is welded above.In order to realize the insulating properties of resistance, with silica gel,
The material such as phenol and epoxy resin smears outer surface.Therefore, even if being contacted in use with other parts of surrounding,
Insulating properties can be maintained.
However, traditional negative temperature coefficient (NTC) thermistor smeared with liquid coating, with other flat part phases
Than the edge of its corps ronds and the insulating properties of faceted portions are remarkably decreased.
Further, since used coating needs to stir together with volatile organic solvent to use, if by defined thickness
It will be limited at edge and faceted portions daub by normal production technology, thus it is current inevitably repeatedly to smear
Mode solves problem.The result that can so cause the wasting of resources and production efficiency to reduce.Nevertheless, due to actually failing
This problem is fully solved, traditional thermistor remains the weak position of insulating properties, also secure context is produced
Adverse effect.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of high-insulativity negative tempperature coefficient thermistor, with
Reach and improve and improve the purpose of durability and insulating properties.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
A kind of high-insulativity negative tempperature coefficient thermistor, including ceramic package and positioned at the ceramic small of Ceramic shell internal
Lead wire is provided with below body, the ceramic corpusculum, the ceramic package front openings form space part, and lower section goes out provided with lead wire
Mouthful, the lead wire is exported through the lead wire；The two bottom sides of the ceramic package are provided with guide protrusions, and the guiding is convex
Spacer portion is provided between rising；Resin facies posterior hepatis is filled between the space part of the ceramic package and ceramic corpusculum.
In such scheme, the surface of the ceramic package through chamfering or mellow and full processing, can prevent in use with
The parts contact of surrounding, improves effective installation rate, does not disturb air flow, can improve cooling effectiveness.
In such scheme, the resin facies posterior hepatis is made up of ceramic resin.
In such scheme, the ceramic corpusculum surface is covered with insulating barrier.
By above-mentioned technical proposal, the high-insulativity negative tempperature coefficient thermistor that the utility model is provided is before maintenance
The characteristic factor such as the electric and environment for meeting negative temperature coefficient (NTC) thermistor in the case of, with improving and improve resistance to
With property and the effect of insulating properties；During product is contacted with around, temperature-sensitive is protected from issuable electrical impact
Resistance, ensures that its security performance；Heat produced by can quickly being absorbed when switching on power on ceramic corpusculum, relies on
Effectively radiating mode thus it can be prevented that unnecessary parts maximization there is provided stable product performance.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described.
Fig. 1 is that the high-insulativity negative tempperature coefficient thermistor ceramic package front disclosed in the utility model embodiment shows
It is intended to；
Fig. 2 is the ceramic package schematic rear view disclosed in the utility model embodiment；
Fig. 3 is the high-insulativity negative tempperature coefficient thermistor front section view disclosed in the utility model embodiment；
Fig. 4 is the high-insulativity negative tempperature coefficient thermistor side sectional view disclosed in the utility model embodiment.
In figure, 10, ceramic corpusculum；20th, ceramic package；30th, resin facies posterior hepatis；11st, lead wire；21st, space part；22nd, draw
Wiring is exported；23rd, guide protrusions；24th, spacer portion.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe.
The utility model provides a kind of high-insulativity negative tempperature coefficient thermistor, structure as shown in Figure 3, the temperature-sensitive
Resistance small volume, insulating properties and thermal diffusivity are good.
High-insulativity negative tempperature coefficient thermistor as shown in Figure 3 and Figure 4, including ceramic package 20 and outside ceramics
Ceramic corpusculum 10 inside shell 20, the ceramic lower section of corpusculum 10 is provided with lead wire 11.As depicted in figs. 1 and 2, the front of ceramic package 20
Opening forms space part 21, and lower section is provided with lead wire outlet 22, and lead wire 11 exports 22 through lead wire；The bottom of ceramic package 20
Portion both sides, which are provided between guide protrusions 23, guide protrusions 23, is provided with spacer portion 24；The space part 21 and ceramics of ceramic package 20 are small
Resin facies posterior hepatis 30 is filled between body 10.
It is identical with general corpusculum, corpusculum is manufactured with ceramic material, lower section both sides welding lead wire 11 forms electrode, and
On its surface, coating insulating materials makes it possess insulating properties.
The main material that ceramic package 20 is compressed shaping, the insulating properties of high-temperature process are good is MgO+SiO2Powder
It is fabricated by.
Resin facies posterior hepatis 30 is made up of ceramic resin, resin facies posterior hepatis 30 can securely pasted with ceramic veneer corpusculum 10 with ceramics
Shell 20.
The preparation process of the thermistor is as follows：
By the positive opening of ceramic package 20, ceramic corpusculum 10 is inserted into space part 21, the lead wire of ceramic corpusculum 10
11 are used to install through lead wire outlet 22 to lower section.
It is attached with the seamless resin of quantitative implanter filling between the space part 21 and ceramic corpusculum 10 of ceramic package 20
Portion 30, after first spontaneously drying, places into and is heat-treated in the thermostat for maintaining certain temperature, be allowed to solidification and possess durability
And insulating properties.During potting resin, even if flowing out a part of resin to lead wire outlet 22, it can also be existed by guide protrusions 23
The spacer portion 24 for specifying specification is formed between bottom surface and ceramic package 20, this temperature-sensitive will not be influenceed because of the resin facies posterior hepatis of outflow
The packaging technology of resistance.
The thermistor manufactured in this way, ceramics are securely seated between by resin facies posterior hepatis 30 by ceramic corpusculum 10
In shell 20, the seamless resin facies posterior hepatis 30 of filling can prevent the infiltration of moisture or foreign matter, which thereby enhance corrosion resistance
And durability.
Meanwhile, the surface of ceramic package 20 has carried out chamfering or mellow and full processing, can prevent in use and surrounding
Parts contact, improve effective installation rate, do not disturb air flow to improve cooling effectiveness.
The heat that ceramic package 20 can be produced with the ceramic corpusculum 10 of absorbed themselves, and the whole appearance for passing through ceramic package 20
Slowly radiate in face.Therefore, in atmosphere in the shortest time by the heat transfer produced in ceramic corpusculum 10 to ceramic package 20,
Cooling effectiveness can be improved, the resistance characteristic of ceramic corpusculum 10 is able to fast quick-recovery, be that the surge current that may apply next time is done
It is good to prepare.
In addition, will not be steeply risen because of any machine internal temperature or drastically decline the reason for produce crack, can be pre-
First prevent rotten or damaged, meet satisfying the requirements for safe parts.
Therefore, negative temperature coefficient (NTC) thermistor of the present utility model has shorter thermal time constant.In addition,
In the case of improving radiating efficiency, the heat for being also prevented from producing in ceramic corpusculum 10 be delivered to suddenly surrounding parts or
The short-circuit electric spark phenomenon of generation is contacted with other conductors, can prevent electrical impact from destroying parts, ensure that its safety
Performance.
Therefore, thermistor of the present utility model is in the electrical characteristic for maintaining existing ceramic corpusculum 10 and the feelings of environmental characteristics
Under condition, have the advantages that to improve insulating properties.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (4)
1. a kind of high-insulativity negative tempperature coefficient thermistor, it is characterised in that including ceramic package and in ceramic package
Lead wire is provided with below the ceramic corpusculum in portion, the ceramic corpusculum, the ceramic package front openings form space part, and lower section is set
There is lead wire outlet, the lead wire is exported through the lead wire；The two bottom sides of the ceramic package are provided with guide protrusions,
Spacer portion is provided between the guide protrusions；Filled with resin attachment between the space part of the ceramic package and ceramic corpusculum
Portion.
2. a kind of high-insulativity negative tempperature coefficient thermistor according to claim 1, it is characterised in that the ceramics are outer
The surface of shell is through chamfering or mellow and full processing.
3. a kind of high-insulativity negative tempperature coefficient thermistor according to claim 1, it is characterised in that the resin is attached
Portion to be made up of ceramic resin.
4. a kind of high-insulativity negative tempperature coefficient thermistor according to claim 1, it is characterised in that the ceramics are small
Body surface face is covered with insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720130978.9U CN206619455U (en) | 2017-02-14 | 2017-02-14 | High-insulativity negative tempperature coefficient thermistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720130978.9U CN206619455U (en) | 2017-02-14 | 2017-02-14 | High-insulativity negative tempperature coefficient thermistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206619455U true CN206619455U (en) | 2017-11-07 |
Family
ID=60230608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720130978.9U Active CN206619455U (en) | 2017-02-14 | 2017-02-14 | High-insulativity negative tempperature coefficient thermistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206619455U (en) |
-
2017
- 2017-02-14 CN CN201720130978.9U patent/CN206619455U/en active Active
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