CN204010865U - A kind of high-power thermal resistor - Google Patents
A kind of high-power thermal resistor Download PDFInfo
- Publication number
- CN204010865U CN204010865U CN201420449427.5U CN201420449427U CN204010865U CN 204010865 U CN204010865 U CN 204010865U CN 201420449427 U CN201420449427 U CN 201420449427U CN 204010865 U CN204010865 U CN 204010865U
- Authority
- CN
- China
- Prior art keywords
- ring set
- end cover
- ceramic
- insulation ring
- core sheet
- 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
Landscapes
- Thermistors And Varistors (AREA)
Abstract
The utility model relates to a kind of high-power thermal resistor, belongs to technical field of electronic devices.This thermistor comprises that ceramic thermistor core sheet, the female ceramic insulation ring set of tool, metallic elastic contact chip, one end have external screw thread and the other end and have the wiring end cover of end face annular groove, ceramic thermistor core sheet is arranged in ceramic insulation ring set, ceramic insulation ring set two ends screw in respectively a wiring end cover, the both sides of ceramic thermistor core sheet electrically contact by a metallic elastic contact chip and wiring end cover inner surface respectively, the cylindrical of ceramic insulation ring set has at least one ring-shaped groove, and the bottom of ring-shaped groove has the through hole of circumferentially-spaced.The utility model has further increased area of dissipation, and adstante febre can form radial air flow, thereby on the basis of original conduction, heat loss through radiation, further, by heat loss through convection effect, has significantly improved radiating effect.
Description
Technical field
The utility model relates to a kind of thermistor, and especially a kind of high-power thermal resistor, belongs to technical field of electronic devices.
Background technology
The thermistor chip weld metal pin that the thermistor that is widely used in the numerous areas such as electronics, communication, traffic, medical treatment is shaped with electrode by two sides conventionally forms.Be applied to high power conversion power supply in order to solve, Switching Power Supply, ups power and all kinds of high-power illumination light fixture, heat dissipation problem when electric heater, application number is that 03277490.7 Chinese patent application discloses a kind of high-power thermal resistor, this thermistor comprises that two sides is shaped with the thermistor chip of electrode, also comprise high temperature insulation ring set, metallic elastic contact chip and wiring end cover, described thermistor chip is arranged in high temperature insulation ring set, two sides electrically contacts by described elastic contact chip and wiring end cover inner surface respectively, described wiring end cover is shaped with external screw thread, be fixedly connected with the internal thread of insulation ring set.What first this thermistor was considered is to take to be electrically connected the measure that between part, face contacts to allow large electric current to pass through, and adopts high temperature insulation ring set to ensure that whole element has higher temperature capacity, secondly just considers to strengthen radiating effect by increasing heat radiation area.Therefore, its radiating effect is limited, and when this type of thermistor is with development in science and technology during towards super high power (electric current can reach 100A) field expanded application, the operating ambient temperature that the limited weakness of its radiating effect causes has produced considerable influence to its performance parameter.
Summary of the invention
The purpose of this utility model is: the weakness existing for above existing thermistor, by architecture advances, proposes the high-power thermal resistor that a kind of radiating effect significantly improves, thereby make it under large current conditions, still keep normal performance.
In order to reach above object, high-power thermal resistor of the present utility model comprises ceramic thermistor core sheet, the female ceramic insulation ring set of tool, metallic elastic contact chip, one end has external screw thread and the other end and has the wiring end cover of end face annular groove, described ceramic thermistor core sheet is arranged in ceramic insulation ring set, described ceramic insulation ring set two ends screw in respectively a wiring end cover, the both sides of described ceramic thermistor core sheet electrically contact by a metallic elastic contact chip and wiring end cover inner surface respectively, its improvements are: the cylindrical of described ceramic insulation ring set has at least one ring-shaped groove, the bottom of described ring-shaped groove has the through hole of circumferentially-spaced.
The groove of ceramic insulation ring set is increasing heat radiation area further, the through hole of channel bottom can make ceramic thermistor core sheet be in communication with the outside, adstante febre can form radial air flow, thereby on the basis of original conduction, heat loss through radiation, further, by heat loss through convection effect, significantly improve radiating effect.
The utility model further improves, and the end face ring trench bottom of described wiring end cover has the through hole of circumferentially-spaced, can make like this heat radiation of ceramic thermistor core sheet more even.
The utility model further improves, and leaves heat radiation gap between the lid eaves inner face of described wiring end cover and the opposing end surface of ceramic insulation ring set.This gap not only makes wiring end cover and ceramic insulation ring set fully show heat-delivery surface, and this gap is convenient to outer gas stream and is taken away heat.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the metallic elastic contact chip structural representation of Fig. 1 embodiment.
Fig. 3 is the end view of Fig. 2.
Fig. 4 is the ceramic insulation ring set cross section sectional structure schematic diagram of Fig. 1 embodiment.
Fig. 5 is the wiring end cover structural representation of Fig. 1 embodiment.
Embodiment
Embodiment mono-
The present embodiment is a kind of NTC thermistor that is applied to surge current suppression in super high power Switching Power Supply, its structure as shown in Figure 1, comprises that ceramic thermistor core sheet 1, the female ceramic insulation ring set 2 of tool, metallic elastic contact chip 3, one end have external screw thread and the other end and have the wiring end cover 4 of end face annular groove.Wherein, ceramic thermistor core sheet 1 is arranged in ceramic insulation ring set 2, and ceramic insulation ring set 2 two ends screw in respectively a wiring end cover 4, and the both sides of ceramic thermistor core sheet 1 electrically contact with wiring end cover 4 inner surfaces by a metallic elastic contact chip 3 respectively.
Metallic elastic contact chip 3 is made up of the heat-resisting elastic sheet metal of 0.2 millimeter of thickness, concrete structure as shown in Figure 2 and Figure 3, the recessed 3-1 of circular arc that its disc-shaped main body stamps out central part and inner side with circular arc concave edge along forming the trapezoid cross section outer groove 3-2 that contacts peak 3-3.
Ceramic insulation ring set 2 is referring to Fig. 4, and cylindrical has two roads ring-shaped groove 2-2 spaced apart, and the bottom of per pass ring-shaped groove 2-2 has the through hole 2-1 of circumferentially-spaced.
Wiring end cover 4 use copper materials are made, referring to Fig. 5, its center has the centre bore that screws terminal screw 5, end face has inside and outside two circle end face annular groove 4-2, end face annular groove 4-2 bottom has the through hole 4-3 of circumferentially-spaced, the through hole 4-3 angular position of the end face annular groove 4-2 bottom of inside and outside circle staggers, and contributes to like this to make the heat radiation of ceramic thermistor core sheet more even.
When assembling, between the lid eaves 4-1 inner face of wiring end cover 4 and the opposing end surface of ceramic insulation ring set 2, leave heat radiation gap 2-3.
In addition, ceramic thermistor core sheet 1, except the coated one deck glass glaze of electrode outer surface, due to the bright and clean densification of glass glaze, damp proof insulation, acid-fast alkali-proof excellent performance, is therefore more conducive to thermistor long-term steady operation in comparison rugged environment.
The high-power thermal resistor of the present embodiment not only has desirable resistance to overheated, overcurrent capability, and dispel the heat by conduction, radiation, especially convection current simultaneously, therefore reduced as far as possible the operating ambient temperature of ceramic thermistor core sheet, made its performance parameter keep stable.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (5)
1. a high-power thermal resistor, comprise ceramic thermistor core sheet, the female ceramic insulation ring set of tool, metallic elastic contact chip, one end has external screw thread and the other end and has the wiring end cover of end face annular groove, described ceramic thermistor core sheet is arranged in ceramic insulation ring set, described ceramic insulation ring set two ends screw in respectively a wiring end cover, the both sides of described ceramic thermistor core sheet electrically contact by a metallic elastic contact chip and wiring end cover inner surface respectively, it is characterized in that: the cylindrical of described ceramic insulation ring set has at least one ring-shaped groove, the bottom of described ring-shaped groove has the through hole of circumferentially-spaced.
2. high-power thermal resistor according to claim 1, is characterized in that: the end face ring trench bottom of described wiring end cover has the through hole of circumferentially-spaced.
3. high-power thermal resistor according to claim 1 and 2, is characterized in that: between the lid eaves inner face of described wiring end cover and the opposing end surface of ceramic insulation ring set, leave heat radiation gap.
4. high-power thermal resistor according to claim 3, is characterized in that: the end face of described wiring end cover has inside and outside two circle end face annular grooves, and the through hole angular position of the end face ring trench bottom of inside and outside circle staggers.
5. high-power thermal resistor according to claim 4, is characterized in that: described ceramic thermistor core sheet is except the coated one deck glass glaze of electrode outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420449427.5U CN204010865U (en) | 2014-08-08 | 2014-08-08 | A kind of high-power thermal resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420449427.5U CN204010865U (en) | 2014-08-08 | 2014-08-08 | A kind of high-power thermal resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010865U true CN204010865U (en) | 2014-12-10 |
Family
ID=52050828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420449427.5U Active CN204010865U (en) | 2014-08-08 | 2014-08-08 | A kind of high-power thermal resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999750A (en) * | 2022-06-13 | 2022-09-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Phase-change temperature control constant resistor |
-
2014
- 2014-08-08 CN CN201420449427.5U patent/CN204010865U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999750A (en) * | 2022-06-13 | 2022-09-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Phase-change temperature control constant resistor |
| CN114999750B (en) * | 2022-06-13 | 2024-05-28 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Phase-change type temperature control constant resistor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204651380U (en) | Battery core syndeton | |
| CN103208595B (en) | Top cover for aluminum-case power batteries | |
| CN203218343U (en) | Top cap for power battery with aluminum jacket | |
| CN204010865U (en) | A kind of high-power thermal resistor | |
| CN104344382A (en) | Heat dissipation lamp cap of LED lamp tube | |
| CN205248112U (en) | Paster high pressure electric capacity | |
| CN201829441U (en) | Surface mount fuse | |
| CN203013542U (en) | Conductive contact seat for high-current switch | |
| CN203941862U (en) | A kind of three utmost point power-off restoration temperature detect switch (TDS)s | |
| CN204332563U (en) | A kind of high temperature resistant resistance device | |
| CN203277095U (en) | High-power commercial induction cooker capacitor | |
| CN205564427U (en) | Miniwatt aluminum alloy cement resistor | |
| CN219199284U (en) | Ceramic tube and electric stove | |
| CN110662338A (en) | Arc channel structure of long arc plasma beam generator | |
| CN204857465U (en) | Solid electrolyte condenser | |
| CN204408651U (en) | Infrared heating device and electrical heated appliance | |
| CN211628801U (en) | 95 porcelain insulation awl insulator of both ends straight flange | |
| CN202394883U (en) | High voltage diode for microwave oven | |
| CN208225632U (en) | A kind of enhanced pulse absorption resistance device of assembling radiating | |
| CN103680948B (en) | A kind of heat-dissipating casing of film capacitor | |
| CN2638209Y (en) | High-power thermal resistor | |
| CN202534934U (en) | Carbon dioxide laser using radiator cooling resonant cavity mirror | |
| CN203659726U (en) | Solid-sealed polar pole breaker structure | |
| CN210425106U (en) | High temperature resistant glass piece cigar lighter | |
| CN206179621U (en) | Insulator metal oxide lightning arrester that level was placed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |