CN209183349U - A kind of overheating protection PTC thermistor - Google Patents
A kind of overheating protection PTC thermistor Download PDFInfo
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- CN209183349U CN209183349U CN201920051646.0U CN201920051646U CN209183349U CN 209183349 U CN209183349 U CN 209183349U CN 201920051646 U CN201920051646 U CN 201920051646U CN 209183349 U CN209183349 U CN 209183349U
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Abstract
The utility model discloses a kind of overheating protection PTC thermistors, including metal shell, conductive sheet, power cavity, conducting wire and link slot, side inside the metal shell is equipped with power cavity, the inner wall of power cavity side is equipped with PTC chip, the both ends of the PTC chip are all equipped with connection intermediate plate, link slot is equipped with inside the metal shell of power cavity side, link slot is all equipped with conductive sheet close to the inner wall both ends of power cavity side, and one end of conductive sheet extends to the inside of power cavity and is fixedly connected with the one end for connecting intermediate plate, the outer wall of the conductive sheet side is equipped with metal leaf springs, the conductive sheet outer wall of metal leaf springs side is equipped with conducting block, the conducting block is equipped with conducting wire far from one end of metal leaf springs.The utility model not only reduces cost when PTC thermistor processing, extends the service life of PTC thermistor, and improves pressure-resistant performance when PTC thermistor uses.
Description
Technical field
The utility model relates to PTC thermistor technical field, specially a kind of overheating protection PTC thermistor.
Background technique
The PTC that usually we mention refers to posive temperature coefficient thermistor, abbreviation PTC thermistor, and PTC thermistor is
A kind of typical semiconductor resistor with temperature sensitivity, when more than certain temperature, its resistance value is as the temperature rises
In increasing for step evolution.
PTC thermistor at present on the market is varied, but functional more single, and there is also certain problems,
It is gradually unable to satisfy the demand of people, particular problem has the following:
1, traditional such PTC thermistor is linked together conducting wire and chip by the way of welding, is added in welding
When work, chip is easily damaged, and processing cost is higher；
2, traditional such PTC thermistor does not have corresponding heat sinking function, is easy to appear the phenomenon that burning, and uses
Service life is shorter；
3, traditional such PTC thermistor insulation performance is general, causes its pressure-resistant performance poor, annoyings people often
?.
Utility model content
The purpose of this utility model is to provide a kind of overheating protection PTC thermistors, to solve above-mentioned background technique
The middle problem for proposing that PTC thermistor processing cost is higher, heat dissipation performance is poor and insulation performance is general.
To achieve the above object, the utility model provides the following technical solutions: a kind of overheating protection PTC thermistor,
Including metal shell, conductive sheet, power cavity, conducting wire and link slot, the side inside the metal shell is equipped with power cavity,
The inner wall of power cavity side is equipped with PTC chip, and the both ends of the PTC chip are all equipped with connection intermediate plate, the power cavity
Link slot is equipped with inside the metal shell of side, link slot is all equipped with conductive sheet close to the inner wall both ends of power cavity side, and
One end of conductive sheet extends to the inside of power cavity and is fixedly connected with the one end for connecting intermediate plate, outside the conductive sheet side
Wall is equipped with metal leaf springs, and the conductive sheet outer wall of metal leaf springs side is equipped with conducting block, and the conducting block is far from metal leaf springs
One end be equipped with conducting wire, and one end of conducting wire extends to the outside of metal shell.
Preferably, the center position inside the metal shell is equipped with metal micro-screen.
Preferably, the PTC chip both ends of the connection intermediate plate side are all equipped with cooling fin, and cooling fin is far from PTC chip one
It is all equipped with equidistant heat-conducting block on the outer wall of side, while being all equipped with heat release hole on the power cavity inner wall at heat-conducting block position,
And one end of heat release hole extends to the outside of metal shell.
Preferably, the metal leaf springs far from conductive sheet side outer wall be equipped with piece spring abutment, and one end of piece spring abutment with
The inner wall of link slot is fixedly connected.
Preferably, the conducting wire is set with elastometric boot far from one end of conducting block.
Preferably, it is equipped with asbestos insulation film inside the metal shell of the metal micro-screen side, metal micro-screen is separate
Ceramic particle is filled with inside the metal shell of asbestos insulation film side.
Compared with prior art, the utility model has the beneficial effects that the overheating protection is not only reduced with PTC thermistor
Cost when PTC thermistor processing, extends the service life of PTC thermistor, and improve PTC thermistor to make
The pressure-resistant performance of used time；
1, by setting connection intermediate plate at PTC chip both ends, link slot sets conductive sheet close to power cavity side inner wall both ends,
Metal leaf springs are set on the outer wall of conductive sheet side, conducting block are set on the conductive sheet outer wall of metal leaf springs side, metal leaf springs are far from conductive
Piece spring abutment is set on the outer wall of piece side, realizes the linkage function of PTC thermistor squash type, to reduce PTC thermistor
Cost when processing；
2, by setting cooling fin at connection intermediate plate side PTC chip both ends, cooling fin on the outer wall of PTC chip side far from setting
Equidistant heat-conducting block sets heat release hole on power cavity inner wall at heat-conducting block position, realizes the heat dissipation function of PTC thermistor
Can, to extend the service life of PTC thermistor；
3, by setting metal micro-screen at metal shell inner hub location, inside the metal shell of metal micro-screen side
If asbestos insulation film, metal micro-screen realizes PTC heat far from ceramic particle is filled inside the metal shell of asbestos insulation film side
The insulation function of quick resistance, to improve pressure-resistant performance when PTC thermistor uses.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the utility model；
Fig. 2 is the external structure schematic diagram of the utility model；
Fig. 3 is the partial enlargement structural representation of the utility model；
Fig. 4 is the metal shell schematic cross-sectional view of the utility model.
In figure: 1, metal shell；2, piece spring abutment；3, conductive sheet；4, PTC chip；5, heat release hole；6, power cavity；7, it dissipates
Backing；8, heat-conducting block；9, intermediate plate is connected；10, metal leaf springs；11, conducting block；12, conducting wire；13, elastometric boot；14, it connects
Slot；15, asbestos insulation film；16, metal micro-screen；17, ceramic particle.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-4 is please referred to, a kind of embodiment provided by the utility model: a kind of overheating protection PTC thermistor, including
Metal shell 1, conductive sheet 3, power cavity 6, conducting wire 12 and link slot 14, the side inside metal shell 1 are equipped with power cavity
6, the inner wall of 6 side of power cavity is equipped with PTC chip 4, and the center position inside metal shell 1 is equipped with metal micro-screen
16, the insulation performance of PTC thermistor is improved, is equipped with asbestos insulation film inside the metal shell 1 of 16 side of metal micro-screen
15, it is filled with ceramic particle 17 inside metal shell 1 of the metal micro-screen 16 far from 15 side of asbestos insulation film, improves PTC
The insulation performance of thermistor, the both ends of PTC chip 4 are all equipped with connection intermediate plate 9, connect 4 both ends of PTC chip of 9 side of intermediate plate
It is all equipped with cooling fin 7, equidistant heat-conducting block 8, while heat-conducting block are all equipped on outer wall of the cooling fin 7 far from 4 side of PTC chip
Heat release hole 5 is all equipped on 6 inner wall of power cavity at 8 positions, and one end of heat release hole 5 extends to the outside of metal shell 1；
Cooling fin 7 is transferred to heat release hole 5 by the heat derives of PTC chip 4, through heat-conducting block 8, and give out metal shell
Outside 1；
Link slot 14 is equipped with inside the metal shell 1 of 6 side of power cavity, link slot 14 is close to 6 side of power cavity
Inner wall both ends are all equipped with conductive sheet 3, and one end of conductive sheet 3 extend to power cavity 6 inside and with one end for connecting intermediate plate 9
It is fixedly connected, the outer wall of 3 side of conductive sheet is equipped with metal leaf springs 10, on outer wall of the metal leaf springs 10 far from 3 side of conductive sheet
Equipped with piece spring abutment 2, and one end of piece spring abutment 2 is fixedly connected with the inner wall of link slot 14, convenient for the fixation of conductive sheet 3, sheet metal
3 outer wall of conductive sheet of 10 side of spring is equipped with conducting block 11, and conducting block 11 is equipped with conducting wire 12 far from one end of metal leaf springs 10, and
One end of conducting wire 12 extends to the outside of metal shell 1, and conducting wire 12 is set with elastometric boot 13 far from one end of conducting block 11,
Convenient for the exterior protection of conducting wire 12.
Working principle: when PTC thermistor in use, first by conducting block 11, conducting wire 12 is connected with conductive sheet 3
It connects, while conductive sheet 3 is fixed on 14 inner wall of link slot, improves its stability by piece spring abutment 2 through metal leaf springs 10, and by
Intermediate plate 9 is connected, PTC chip 4 is connected with conductive sheet 3, it, will passing through cooling fin 7 instead of traditional welding connecting mode
The heat derives of PTC chip 4 are transferred to heat release hole 5 through heat-conducting block 8, and give out outside metal shell 1, finally by stone
Cotton insulating film 15, metal micro-screen 16 and ceramic particle 17 assist metal shell 1, improve PTC thermistor
Insulation performance enhances the pressure-resistant performance of PTC thermistor, to complete the use of PTC thermistor.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
Claims (6)
1. a kind of overheating protection PTC thermistor, including metal shell (1), conductive sheet (3), power cavity (6), conducting wire
(12) and link slot (14), it is characterised in that: the internal side of the metal shell (1) is equipped with power cavity (6), power cavity
(6) inner wall of side is equipped with PTC chip (4), and the both ends of the PTC chip (4) are all equipped with connection intermediate plate (9), the power
Link slot (14) are equipped with inside the metal shell (1) of cavity (6) side, link slot (14) is interior close to power cavity (6) side
Wall both ends are all equipped with conductive sheet (3), and one end of conductive sheet (3) extend to power cavity (6) inside and with connect intermediate plate (9)
One end be fixedly connected, the outer wall of conductive sheet (3) side is equipped with metal leaf springs (10), and metal leaf springs (10) side is led
Electric piece (3) outer wall is equipped with conducting block (11), and the conducting block (11) is equipped with conducting wire (12) far from the one end of metal leaf springs (10),
And one end of conducting wire (12) extends to the outside of metal shell (1).
2. a kind of overheating protection PTC thermistor according to claim 1, it is characterised in that: the metal shell (1)
Internal center position is equipped with metal micro-screen (16).
3. a kind of overheating protection PTC thermistor according to claim 1, it is characterised in that: the connection intermediate plate (9)
PTC chip (4) both ends of side are all equipped with cooling fin (7), are all equipped on the outer wall of separate PTC chip (4) side of cooling fin (7)
Equidistant heat-conducting block (8), while heat release hole (5) all are equipped on power cavity (6) inner wall at heat-conducting block (8) position, and dissipate
One end of hot hole (5) extends to the outside of metal shell (1).
4. a kind of overheating protection PTC thermistor according to claim 1, it is characterised in that: the metal leaf springs
(10) outer wall far from conductive sheet (3) side is equipped with piece spring abutment (2), and one end of piece spring abutment (2) and link slot (14) is interior
Wall is fixedly connected.
5. a kind of overheating protection PTC thermistor according to claim 1, it is characterised in that: the conducting wire (12) is remote
One end from conducting block (11) is set with elastometric boot (13).
6. a kind of overheating protection PTC thermistor according to claim 2, it is characterised in that: the metal micro-screen
(16) asbestos insulation film (15) are equipped with inside the metal shell (1) of side, metal micro-screen (16) is far from asbestos insulation film (15)
Ceramic particle (17) are filled with inside the metal shell (1) of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920051646.0U CN209183349U (en) | 2019-01-11 | 2019-01-11 | A kind of overheating protection PTC thermistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920051646.0U CN209183349U (en) | 2019-01-11 | 2019-01-11 | A kind of overheating protection PTC thermistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209183349U true CN209183349U (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920051646.0U Active CN209183349U (en) | 2019-01-11 | 2019-01-11 | A kind of overheating protection PTC thermistor |
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| Country | Link |
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| CN (1) | CN209183349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363032A (en) * | 2020-03-05 | 2021-09-07 | 高尔科技股份有限公司 | High-speed heat conduction sensor |
-
2019
- 2019-01-11 CN CN201920051646.0U patent/CN209183349U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363032A (en) * | 2020-03-05 | 2021-09-07 | 高尔科技股份有限公司 | High-speed heat conduction sensor |
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