CN85201165U - Non-fuse wire fuse - Google Patents
Non-fuse wire fuse Download PDFInfo
- Publication number
- CN85201165U CN85201165U CN 85201165 CN85201165U CN85201165U CN 85201165 U CN85201165 U CN 85201165U CN 85201165 CN85201165 CN 85201165 CN 85201165 U CN85201165 U CN 85201165U CN 85201165 U CN85201165 U CN 85201165U
- Authority
- CN
- China
- Prior art keywords
- circuit
- fuse
- memory alloy
- spring
- shape memory
- 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.)
- Ceased
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 9
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Fuses (AREA)
Abstract
The utility model discloses a non-fuse wire fuse used in a circuit, which belongs to the element of an emergent protection device in a circuit, comprising an insulating casing, a temperature shim rod, a helper spring and a main spring made of shape memory alloy. The spring made of shape memory alloy is sheathed on the temperature shim rod. When the circuit is overloaded or the short circuit occurs, the spring made of shape memory alloy contracts to cut off the power. After the circuit is cut off, the temperature is lowered, the spring made of shape memory alloy is extended to drive the helper spring to expand, and the circuit is restored to the conducting state again.
Description
The invention belongs to the element in the emergency protective device in the circuit.
In prior art, the airtight cartridge fuse of the RM no filler of series that adopts in the general current protective device.This fuse is made up of detachable fuse tube, socket and fuse piece.When the current strength in the supply line surpassed the rated current of fuse piece, fuse piece fused because of heating, thereby cut off the power supply of electric equipment, played the protective effect to electric equipment.This class fuse needs to change after fuse piece fusing.
The objective of the invention is: a kind of no fuse failure device is provided; it can be in supply line current strength electric equipment is shielded when surpassing rated current; can when descending, circuit temperature play energized again again.
Formation of the present invention is: the shape memory spring that an acid bronze alloy is arranged in these safeties, when surpassing in the no fuse failure device the reversible of memory alloy wire, electric equipment short circuit or wire overloading temperature deliver temperature and automatic disconnection, indicator lit, report short circuit or overload.The temperature that disconnects the back memory alloy wire descends, and can connect automatically again.
The big I of safeties shell sizes of the present invention be designed to known commercial on the suitable size of safeties used, replace original safeties thereby the safeties of making according to the present invention can be installed in the system of existing electric equipment.
Advantage of the present invention is: can play urgent protective effect to equipment when current overload or short circuit, can recover the conducting function automatically again.
Be a most preferred embodiment of the present invention below.Fig. 1 a is a no fuse failure device cut-away view of having simplified.With the spring (1) that a shape-memory alloy wire makes, be enclosed within on the temperature-compensating rod (2), a secondary spring (3) also is housed on shim rod (2), they all link to each other with electrode (4).These parts all are contained in the porcelain tube (5), and two is by fusing pipe cap (6) sealing, and electrode (4) contacts with socket.
Fig. 1 b is no fuse failure device outline drawing.
Under the normal condition, electric current passes through from electrode, shape memory spring and temperature-compensating rod, socket.When circuit was short-circuited or transship, the heating of temperature-compensating rod made shape memory spring shrink (or elongation) immediately, and is cut off the electricity supply immediately by the very fast elimination hysteresis of the secondary spring face that is subjected to open (or pressurized).After the cut-out, temperature descends, and shape memory alloy spring extends (or shortening) again, drives secondary spring and is subjected to open (or pressurized), returns to the state of conducting so again.
Claims (2)
1, in a kind of circuit, it comprises porcelain tube shell (5), the no fuse failure device of fusing pipe cap (6), it is characterized in that the spring (1) that makes by a shape-memory alloy wire, it is enclosed within on the temperature-compensating rod (2), and a secondary spring (3) also is housed.
2, no fuse failure device according to claim 1 is characterized in that, secondary spring is an element that is in tension or pressured state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85201165 CN85201165U (en) | 1985-04-01 | 1985-04-01 | Non-fuse wire fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85201165 CN85201165U (en) | 1985-04-01 | 1985-04-01 | Non-fuse wire fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85201165U true CN85201165U (en) | 1986-07-02 |
Family
ID=4797302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85201165 Ceased CN85201165U (en) | 1985-04-01 | 1985-04-01 | Non-fuse wire fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85201165U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871799A (en) * | 2014-04-02 | 2014-06-18 | 山东大学 | Hundred thousand secondary self-restoration fuse and semi-self-restoration circuit |
| CN110600349A (en) * | 2019-10-09 | 2019-12-20 | 王淯 | Intelligent fuse |
| CN110828256A (en) * | 2019-11-28 | 2020-02-21 | 曹欢 | Safety fuse convenient to change fuse-element |
-
1985
- 1985-04-01 CN CN 85201165 patent/CN85201165U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871799A (en) * | 2014-04-02 | 2014-06-18 | 山东大学 | Hundred thousand secondary self-restoration fuse and semi-self-restoration circuit |
| CN103871799B (en) * | 2014-04-02 | 2015-09-16 | 山东大学 | 100000 level self-healing fuses and semi-self-resetting circuit |
| CN110600349A (en) * | 2019-10-09 | 2019-12-20 | 王淯 | Intelligent fuse |
| CN110828256A (en) * | 2019-11-28 | 2020-02-21 | 曹欢 | Safety fuse convenient to change fuse-element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |