CN106024518A - Thermal fuse - Google Patents
Thermal fuse Download PDFInfo
- Publication number
- CN106024518A CN106024518A CN201610491336.1A CN201610491336A CN106024518A CN 106024518 A CN106024518 A CN 106024518A CN 201610491336 A CN201610491336 A CN 201610491336A CN 106024518 A CN106024518 A CN 106024518A
- Authority
- CN
- China
- Prior art keywords
- movable contact
- shell
- contact spring
- outer shell
- wire
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
- H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Abstract
The invention discloses a thermal fuse, which comprises a ceramic ring, a ceramic column, an outer shell and a movable contact piece, wherein the ceramic ring, the ceramic column and the outer shell are sequentially connected in a sealed manner, the movable contact piece is arranged in the outer shell, a first lead wire is arranged in the ceramic ring, the first lead wire is fixedly connected with the ceramic ring, a fuse body and a second lead wire are arranged in the outer shell, the second lead wire is fixedly connected with the outer shell, empty cavities are formed in both ends of the inner side of the ceramic column, a spring is arranged in each empty cavity, one end of each spring is connected with the movable contact piece, a storage box is arranged under the outer shell, the storage box is communicated with the outer shell, and the movable contact piece is a copper movable contact piece. The thermal fuse has the advantages of being high in structural stability, convenient to use, good in insulation effect, and safety and reliable.
Description
Technical field
The present invention relates to a kind of thermal cut-off.
Background technology
Fuse refers to when electric current exceedes setting, makes melt fuse with the heat that itself produces, a kind of electrical equipment of disconnecting circuit.Fuse be exceed setting a period of time according to electric current after, with himself produce heat make Melt molten so that circuit disconnect；Use a kind of current protector that this principle is made.Fuse is widely used in high and low voltage electric distribution system and control system and electrical equipment, as short circuit and the protector of overcurrent, is to apply one of most common protection device.
Fuse is mainly made up of melt, shell and bearing 3 part, and wherein melt is the key element controlling operating chacteristics.The material of melt, size and dimension determine operating chacteristics.Melt material is divided into low melting point and high-melting-point two class.Low melting material such as lead and metal, the low easy fusing of its fusing point, owing to its resistivity is relatively big, therefore the sectional dimension making melt is relatively big, and the metal vapors produced during fusing is more, is only applicable to the fuse of low breaking capacity.Materials with high melting point such as copper, silver, its fusing point is high, it is not easy to fusing, but owing to its resistivity is relatively low, can be made into the sectional dimension less than low fusing point melt, and the metal vapors produced during fusing is few, it is adaptable to the fuse of high breaking capacity.
Current existing fuse structure is complicated, and volume is relatively big, and structural stability is relatively low, installs and uses inconvenience.
Summary of the invention
It is high that the technical problem to be solved in the present invention is to provide a kind of junction structure stability, and easy to use, insulation effect is good, the thermal cut-off of safe and reliable function.
For solving the problems referred to above, the present invention adopts the following technical scheme that a kind of thermal cut-off, including porcelain ring, porcelain knob, shell and movable contact spring, described porcelain ring, porcelain knob and shell are tightly connected successively, described movable contact spring sets in the enclosure, it is provided with the first lead-in wire in described porcelain ring, described first lead-in wire is fixing with porcelain ring to be connected, melt and the second lead-in wire it is additionally provided with in described shell, described second lead-in wire is fixing with shell to be connected, inside described porcelain knob, two ends are provided with cavity, it is provided with spring in described cavity, described spring one end is connected with movable contact spring, it is provided with receiver below described shell, described receiver connects with shell, described movable contact spring is copper movable contact spring.
As preferably, described shell be thickness be 2mm.
As preferably, described movable contact spring thickness is 5mm.
As preferably, described movable contact spring is slidably connected with shell.
As preferably, described first diameter wire is more than 2mm.
The invention have the benefit that porcelain ring and the porcelain knob of setting keep insulation effect good, safe and reliable；The shell arranged keeps Stability Analysis of Structures reliable；The melt arranged electric current excessive heated after melt, be flowed in receiver, spring makes movable contact spring move, and circuit can be made to disconnect, and convenient and reliable operation is easy to use.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of thermal cut-off of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of thermal cut-off, including porcelain ring 1, porcelain knob 2, shell 3 and movable contact spring 4, described porcelain ring 1, porcelain knob 2 and shell 3 are tightly connected successively, described movable contact spring 4 is located in shell 3, the first lead-in wire 5 it is provided with in described porcelain ring 1, described first lead-in wire 5 is fixing with porcelain ring 1 to be connected, melt 6 and the second lead-in wire 7 it is additionally provided with in described shell 3, described second lead-in wire 7 is fixing with shell 3 to be connected, inside described porcelain knob 2, two ends are provided with cavity 8, it is provided with spring 9 in described cavity 8, described spring 9 one end is connected with movable contact spring 4, it is provided with receiver 10 below described shell 3, described receiver 10 connects with shell 3, described movable contact spring 4 is copper movable contact spring.
Described shell 3 is 2mm for thickness, keeps sound construction reliable.
Described movable contact spring 4 thickness is 5mm, and movable contact spring 4 facilitates switching on and off of electric current.
Described movable contact spring 4 is slidably connected with shell 3, keeps movable contact spring 4 to move smooth and easy.
Described first lead-in wire 5 diameters are more than 2mm.
The invention have the benefit that porcelain ring and the porcelain knob of setting keep insulation effect good, safe and reliable；The shell arranged keeps Stability Analysis of Structures reliable；The melt arranged electric current excessive heated after melt, be flowed in receiver, spring makes movable contact spring move, and circuit can be made to disconnect, and convenient and reliable operation is easy to use.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any change expected without creative work or replacement, all should contain within protection scope of the present invention.
Claims (5)
1. a thermal cut-off, it is characterized in that: include porcelain ring, porcelain knob, shell and movable contact spring, described porcelain ring, porcelain knob and shell are tightly connected successively, described movable contact spring sets in the enclosure, it is provided with the first lead-in wire in described porcelain ring, described first lead-in wire is fixing with porcelain ring to be connected, melt and the second lead-in wire it is additionally provided with in described shell, described second lead-in wire is fixing with shell to be connected, inside described porcelain knob, two ends are provided with cavity, it is provided with spring in described cavity, described spring one end is connected with movable contact spring, it is provided with receiver below described shell, described receiver connects with shell, described movable contact spring is copper movable contact spring.
Thermal cut-off the most according to claim 1, it is characterised in that: described shell be thickness be 2mm.
Thermal cut-off the most according to claim 1, it is characterised in that: described movable contact spring thickness is 5mm.
Thermal cut-off the most according to claim 1, it is characterised in that: described movable contact spring is slidably connected with shell.
Thermal cut-off the most according to claim 1, it is characterised in that: described first diameter wire is more than 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610491336.1A CN106024518A (en) | 2016-06-29 | 2016-06-29 | Thermal fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610491336.1A CN106024518A (en) | 2016-06-29 | 2016-06-29 | Thermal fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106024518A true CN106024518A (en) | 2016-10-12 |
Family
ID=57083992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610491336.1A Pending CN106024518A (en) | 2016-06-29 | 2016-06-29 | Thermal fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106024518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110612587A (en) * | 2017-03-14 | 2019-12-24 | 德恩塞两合公司 | Thermally activatable mechanical switching device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449941U (en) * | 2009-04-29 | 2010-05-05 | 江苏常胜电器有限公司 | thermal protector |
| JP2014007116A (en) * | 2012-06-27 | 2014-01-16 | Nec Schott Components Corp | Thermosensitive pellet type thermal fuse |
| CN104201075A (en) * | 2014-09-17 | 2014-12-10 | 安徽蓝海机电设备有限公司 | Fuse structure, fuse and welding machine |
| CN105304427A (en) * | 2015-11-04 | 2016-02-03 | 成都聚智工业设计有限公司 | High-voltage fuse |
-
2016
- 2016-06-29 CN CN201610491336.1A patent/CN106024518A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449941U (en) * | 2009-04-29 | 2010-05-05 | 江苏常胜电器有限公司 | thermal protector |
| JP2014007116A (en) * | 2012-06-27 | 2014-01-16 | Nec Schott Components Corp | Thermosensitive pellet type thermal fuse |
| CN104201075A (en) * | 2014-09-17 | 2014-12-10 | 安徽蓝海机电设备有限公司 | Fuse structure, fuse and welding machine |
| CN105304427A (en) * | 2015-11-04 | 2016-02-03 | 成都聚智工业设计有限公司 | High-voltage fuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110612587A (en) * | 2017-03-14 | 2019-12-24 | 德恩塞两合公司 | Thermally activatable mechanical switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |