CN219677193U - Temperature fuse - Google Patents
Temperature fuse Download PDFInfo
- Publication number
- CN219677193U CN219677193U CN202223219252.2U CN202223219252U CN219677193U CN 219677193 U CN219677193 U CN 219677193U CN 202223219252 U CN202223219252 U CN 202223219252U CN 219677193 U CN219677193 U CN 219677193U
- Authority
- CN
- China
- Prior art keywords
- spring
- insulator
- insulating
- metal shell
- star
- 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
- 239000012212 insulator Substances 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 35
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 27
- 239000006187 pill Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
The utility model discloses a temperature fuse, which comprises a left pin, an insulator, a star-shaped reed, a spring assembly, an organic pill, a metal shell and a right pin; one end of the metal shell is fixed with the insulator; the left pin penetrates into the metal shell from the middle of the insulator, and the right pin is connected with the other end of the metal shell opposite to the insulator; the star-shaped reed, the spring component and the organic pill are arranged in the metal shell between the left pin and the right pin; the spring component is matched with an organic pill to control the star-shaped reed to be connected or disconnected with the left pin and the right pin; the thin spring of the spring assembly is an insulating thin spring, and the thick spring of the spring assembly is an insulating thick spring. The utility model has the product of spring modification and insulation and has very high breaking capacity; can be widely applied to the fields of household appliances, bathrooms, communication and the like, and has simple and convenient installation and wide application range.
Description
Technical Field
The present utility model relates to a temperature fuse.
Background
The temperature fuse is a one-time action non-resettable device and is widely applied to thermal protection of electric appliances, electronic equipment and similar components.
When the traditional temperature fuse acts under high current, the organic pill melts after the temperature reaches the preset temperature, and the spring separates the metal movable contact from the pin electrode, so that the circuit is cut off; when the contact is separated, the spring is changed from a compression state to a release state, the spring can contact the inner wall of the metal shell due to the material tolerance and assembly tolerance of the production part, the spring can form a circuit branch to conduct electricity due to the fact that the spring is made of a conductive material, when the spring has branch current, the spring is regarded as an induction coil at the moment of releasing the spring, the pin electrode is regarded as a metal part in the coil, and instant induction electromotive force can be generated according to Faraday electromagnetic induction law. When the induced large current generated by the spring instantaneously flows through the star-shaped reed, high electric arc is generated to cause the pin electrode and the star-shaped reed to be welded, so that the product is continuously generated, and the thermal protection function of the circuit is lost.
Disclosure of Invention
The utility model aims to provide a temperature fuse which can solve the continuous problem of the traditional product and has high circuit breaking capacity.
In order to solve the problems, the utility model adopts the following technical scheme:
a temperature fuse comprises a left pin, an insulator, a star-shaped reed, a spring component, an organic pill, a metal shell and a right pin; one end of the metal shell is fixed with the insulator; the left pin penetrates into the metal shell from the middle of the insulator, and the right pin is connected with the other end of the metal shell opposite to the insulator; the star-shaped reed, the spring component and the organic pill are arranged in the metal shell between the left pin and the right pin; the spring component is matched with an organic pill to control the star-shaped reed to be connected or disconnected with the left pin and the right pin; the thin spring of the spring assembly is an insulating thin spring, and the thick spring of the spring assembly is an insulating thick spring.
Further, the spring assembly further comprises a left wafer and a right wafer; one end of the insulating thin spring is abutted against the insulator, and the other end of the insulating thin spring is abutted against the star-shaped reed; one end of the insulating thick spring is propped against the left circular sheet, and the left circular sheet is propped against the star-shaped reed; the other end of the insulating thick spring is abutted against the right circular disc, and the right circular disc is abutted against the organic pill.
Further, bosses are convexly arranged at two ends of the insulator, a step part is formed between the outer Zhou Jun of the two bosses and the outer wall of the insulator, and one end of the metal shell is curled inwards to cover the step part at the outer end of the insulator; the insulating fine spring is sleeved on the boss at the inner end of the insulator and abuts against the step part at the inner end.
Furthermore, the outer end of the insulator is in insulating connection with the curled edge of the metal shell through filling of epoxy resin.
Further, the outer periphery of the star-shaped reed is in conductive contact with the inner wall surface of the metal shell.
Further, the insulating fine spring is formed by coating an insulating layer on the outer surface of the stainless steel spring and performing secondary processing.
Further, the insulating thick spring is formed by coating an insulating layer on the outer surface of the stainless steel spring and performing secondary processing.
Furthermore, the insulating layer is a silica gel coating.
Furthermore, the thickness of the insulating layer is not more than 0.1mm, the voltage-withstanding AC is between 500V and 1500V, and the leakage current is less than 2mA.
The beneficial effects of the utility model are as follows: the utility model relates to a temperature fuse with an insulating spring, which is a product with high breaking capacity, and the circuit is under the insulation protection of an insulating fine spring and an insulating coarse spring in the cutting process, so that the generation of large electric arcs and instantaneous electromotive force are stopped, and the temperature fuse has high circuit breaking capacity.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art;
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an embodiment of the present utility model when disconnected
Fig. 3 is a schematic cross-sectional view of an insulating coarse spring according to an embodiment of the present utility model.
Description of the reference numerals:
pin 1, epoxy 2, insulator 3, boss 31, step 32, insulating fine spring 4, spring assembly 20, star reed 5, left disk 61, right disk 6, insulating coarse spring 7, organic pellet 8, metal casing 9, pin 10, insulating layer 30.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1 to 2, a thermal fuse of the present utility model includes a left lead 1, an epoxy 2, an insulator 3, a star-shaped reed 5, a spring assembly 20, an organic pill 8, a metal case 9, and a right lead 10.
In this embodiment, as shown in fig. 1, the metal shell 9 is curled and fixed with the insulator 3, that is, the two ends of the insulator 3 are both provided with protruding bosses 31, a step portion 32 is formed between the outer sides Zhou Jun of the two protruding bosses 31 and the outer wall of the insulator 3, one end of the metal shell 9 is curled inwards to cover the step portion 32 of the outer end of the insulator 3, and the epoxy resin 2 is filled between the outer end of the insulator 3 and the curled edge of the metal shell 9 to form insulation connection.
The left pin 1 penetrates into the metal shell 9 from the middle part of the insulator 3, and the right pin 10 is connected with the other end of the metal shell 9 opposite to the insulator 3 and can extend into the metal shell 9 to be fixed.
A star-shaped reed 5, a spring component 20 and an organic pill 8 are arranged inside a metal shell 9 between the left pin 1 and the right pin 10.
The spring assembly 20 includes an insulating fine spring 4, a left disc 61, an insulating coarse spring 7, and a right disc 62.
One end of the insulating thin spring 4 is abutted against the insulator 3, namely, the insulating thin spring is sleeved on the boss 31 at the inner end of the insulator 3 and abutted against the step part 32 at the inner end, and the other end of the insulating thin spring is abutted against the star-shaped reed 5. Providing thrust in the compressed state and being insulated from all contact members.
Each star-shaped expanding antenna on the periphery of the star-shaped reed 5 is in conductive contact with the inner wall surface of the metal shell 9.
One end of the insulating thick spring 7 is abutted against the left disc 61, the left disc 61 is abutted against the star-shaped reed 5, the other end of the insulating thick spring is abutted against the right disc 62, and the right disc 62 is abutted against the organic pill 8. Providing thrust in the compressed state and being insulated from all contact members.
The organic pill 8 is a heat-sensitive material and is used for sensing temperature, the insulating thick spring 7 and the insulating thin spring 4 are mutually compressed to push the middle part of the star-shaped reed 5 to be contacted with the end part of the left pin 1, and the left disc 61 and the right disc 62 provide plane contact for the insulating thick spring 7.
As shown in fig. 3, the insulating thick spring 7 is a stainless steel spring, and the outer surface is coated with a silica gel coating layer 30 by secondary processing.
The manufacturing principle of the insulating fine spring 4 is the same as that of the insulating coarse spring 7, and the insulating layer 30 is formed by fully coating the outer surface with a silica gel coating through secondary processing of the stainless steel spring.
Insulation performance of the insulation fine spring 4 and the insulation coarse spring 7: the thickness of the insulating layer is not more than 0.1mm, the product can withstand voltage AC500V-1500V, and leakage current is less than 2mA.
The working principle of the utility model is as follows:
in the embodiment, the loop current-carrying components are a left pin 1, a star-shaped reed 5, a metal shell 9 and a right pin 10 in sequence. And when the temperature is not sensed in a normal state, the current carrying components are in one-to-one correspondence contact electric connection to form a conducting loop.
The insulation protection of the loop is as follows: the insulator 3 is ceramic material, and insulating thin spring 4 surface is equipped with the silica gel material coating, and insulating thick spring 7 surface is equipped with the silica gel material coating, and organic matter pellet 8 is insulating material. Thereby forming an insulating protection system inside.
The insulating material of the insulating spring can resist the temperature of 300 ℃, can be suitable for all-specification temperature fuses, and has convenient installation and wide application range.
As shown in fig. 2, when the temperature sensed by the temperature fuse reaches or exceeds the melting point temperature of the organic pill 8, the organic pill 8 is converted from solid state to liquid state or gas state, the insulating coarse spring 7 loses support, the left disc 61 starts to be released, the insulating fine spring 4 starts to push the star-shaped reed 5, the left pin 1 of the temperature fuse is separated from the star-shaped reed 5, the flow guide loop is separated, the circuit is prevented from generating large electric arcs and instantaneous electromotive force under the insulation protection of the insulating fine spring 4 and the insulating coarse spring 7 in the cutting process, and the breaking capacity of products is greatly improved. Can be widely applied to the fields of household appliances, bathrooms, communication and the like, and has simple and convenient installation and wide application range.
Standard parts used in the utility model can be purchased from the market, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets, welding and the like in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (9)
1. A temperature fuse comprises a left pin, an insulator, a star-shaped reed, a spring component, an organic pill, a metal shell and a right pin; one end of the metal shell is fixed with the insulator; the left pin penetrates into the metal shell from the middle of the insulator, and the right pin is connected with the other end of the metal shell opposite to the insulator; the star-shaped reed, the spring component and the organic pill are arranged in the metal shell between the left pin and the right pin; the spring component is matched with an organic pill to control the star-shaped reed to be connected or disconnected with the left pin and the right pin;
the method is characterized in that: the thin spring of the spring assembly is an insulating thin spring, and the thick spring of the spring assembly is an insulating thick spring.
2. A thermal fuse according to claim 1, wherein: the spring assembly further comprises a left circular disc and a right circular disc; one end of the insulating thin spring is abutted against the insulator, and the other end of the insulating thin spring is abutted against the star-shaped reed; one end of the insulating thick spring is propped against the left circular sheet, and the left circular sheet is propped against the star-shaped reed; the other end of the insulating thick spring is abutted against the right circular disc, and the right circular disc is abutted against the organic pill.
3. A thermal fuse according to claim 2, wherein: bosses are arranged at two ends of the insulator in a protruding mode, a step part is formed between the outer Zhou Jun of the two bosses and the outer wall of the insulator, and one end of the metal shell is curled inwards to cover the step part at the outer end of the insulator; the insulating fine spring is sleeved on the boss at the inner end of the insulator and abuts against the step part at the inner end.
4. A thermal fuse according to claim 3, wherein: and the outer end of the insulator is in insulating connection with the curled edge of the metal shell through filling of epoxy resin.
5. A thermal fuse according to claim 1, wherein: the outer periphery of the star-shaped reed is in conductive contact with the inner wall surface of the metal shell.
6. A thermal fuse according to claim 1, wherein: the insulating fine spring is formed by coating an insulating layer on the outer surface of the stainless steel spring and performing secondary processing.
7. A thermal fuse according to claim 1, wherein: the insulating coarse spring is formed by coating an insulating layer on the outer surface of the stainless steel spring and performing secondary processing.
8. A thermal fuse according to claim 6 or claim 7, wherein: the insulating layer is a silica gel coating.
9. A thermal fuse in accordance with claim 8, wherein: the thickness of the insulating layer is not more than 0.1mm, the voltage-withstanding AC is between 500V and 1500V, and the leakage current is less than 2mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223219252.2U CN219677193U (en) | 2022-11-30 | 2022-11-30 | Temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223219252.2U CN219677193U (en) | 2022-11-30 | 2022-11-30 | Temperature fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219677193U true CN219677193U (en) | 2023-09-12 |
Family
ID=87920237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223219252.2U Active CN219677193U (en) | 2022-11-30 | 2022-11-30 | Temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219677193U (en) |
-
2022
- 2022-11-30 CN CN202223219252.2U patent/CN219677193U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204303734U (en) | A kind of Thermal Cutoffs with two pawl spring sheet | |
| US11069501B2 (en) | Miniature super surface mount fuse and manufacturing method thereof | |
| CN219677193U (en) | Temperature fuse | |
| CN204480909U (en) | A kind of thermal resistance formula on-load switch conductor plate syndeton | |
| WO2023241180A1 (en) | High-current high-voltage temperature fuse capable of being quickly fused | |
| CN210156307U (en) | Intelligent vacuum circuit breaker | |
| KR20090094601A (en) | Repeatable fuse | |
| CN206877909U (en) | Thermal cut-off | |
| CN202585300U (en) | High voltage current limiting fuse with rolling structure | |
| WO2019054437A1 (en) | Temperature-sensitive pellet type thermal fuse | |
| CN206558470U (en) | A kind of novel electrical contact device thermal cut-off protected with disjunction | |
| CN2385431Y (en) | Heat fuse | |
| CN208507604U (en) | A kind of current over-load protector | |
| CN207743110U (en) | A kind of high voltage direct current disconnecting device | |
| CN112259312A (en) | Safe and reliable lightning protection surge protector | |
| CN201918260U (en) | Self-protection thin-film capacitor provided with temperature control switch | |
| CN205846710U (en) | A kind of protection device of fuse | |
| CN207800533U (en) | A kind of axial direction alloy-type metal-back temperature fuse | |
| CN208570508U (en) | A kind of novel axial alloy type thermal fuse | |
| CN216250469U (en) | Fuse filled with heat-conducting silica gel | |
| CN208655555U (en) | A kind of high pressure resistant shape temperature resistance using novel axial alloy type thermal fuse | |
| CN216648210U (en) | High-current temperature fuse | |
| CN205211693U (en) | Warning fuse for power equipment | |
| CN207320007U (en) | A kind of electrical contact thermal cut-off of novel protected disjunction spring | |
| CN221262279U (en) | Thermal fuse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |