CN2289295Y - Double-safety temp.-controling switch - Google Patents
Double-safety temp.-controling switch Download PDFInfo
- Publication number
- CN2289295Y CN2289295Y CN 96237617 CN96237617U CN2289295Y CN 2289295 Y CN2289295 Y CN 2289295Y CN 96237617 CN96237617 CN 96237617 CN 96237617 U CN96237617 U CN 96237617U CN 2289295 Y CN2289295 Y CN 2289295Y
- Authority
- CN
- China
- Prior art keywords
- contact
- metal spring
- circuit
- safety
- fuse
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a double-safety temperature controlling switch, a PTC element 8 is connected between two wiring copper boars of a temperature controlling switch whose circuit is cut off when the metal spring sheet is heated to deform, and when the circuit is cut off, the metal spring sheet of the temperature controlling switch which maintains the heated state can not automatically reset and recover to switch on the circuit; the safety of the equipment is ensured, and simultaneously times of a fuse blowing are reduced, and the trouble of changing the fuse is reduced.
Description
The utility model relates to the protection switch of a kind of auto switching control temperature or restriction electric current.
Electric equipment; all be set under the rated current as motor, electric heating products and work; in order to protect electric equipment can not burn out because electric current is excessive; temperature detect switch (TDS) restriction electric current generally is installed in the circuit appropriate location to be passed through; this switch is that the thermal effect distortion that utilizes the metal spring sheet to produce by super-high-current the time causes open circuit; simultaneously, series connection one fuse behind temperature detect switch (TDS), the fusing-off temperature of general fuse is higher 10 ℃ than the temperature of the temperature controlling point of temperature detect switch (TDS).There is a problem in this control switch: behind metal spring sheet open circuit, temperature descends, the connection circuit automatically resets.Cause that the excessive reason of electric current do not find out, or equipment fault do not get rid of, recover energising automatically, can may cause bigger peril.And will bring the trouble of changing fuse because metal spring sheet open circuit and connect circuit ceaselessly blows fuse easily this moment.
The metal spring sheet that the purpose of this utility model is to solve temperature detect switch (TDS) can not lowered the temperature and the connection circuit that automatically resets by behind the excessive heating open circuit of electric current, and the safety of the assurance equipment and the person also makes fuse be difficult for blowing.
The technical solution of the utility model is as follows:
PTC element in parallel on temperature detect switch (TDS), utilize the resistivity-temperature characteristics after the PTC element is switched on, make the metal spring sheet of temperature detect switch (TDS) continue the open circuit that is heated, and the resistance of PTC element is very big at this moment, the electric current that passes through is very little, can not work the mischief to equipment or personal safety.
Accompanying drawing is the structural representation of an embodiment of the present utility model, comprising: metal spring sheet 1, contact copper sheet 2, contact 3 and 4, wiring copper coin 5 and 6, fixed plastics 7, PTC element 8.The metal spring sheet is fixed on the contact copper sheet, and the end that an end, the other end that an end of contact copper sheet is fixed in wiring copper coin 6 stamps out contact 3, wiring copper coin 5 stamps out the contact that contact 4, contact 3 and 4 constitute a pair of make-and-break contact.Wiring copper coin 5 and an other termination of 6 are gone into power-on circuit.Between wiring copper coin 5 and 6, connect a slice PTC element.
During normal power-up, contact 3 and 4 closures, electric current does not almost have electric current through wiring copper coin 6, contact copper sheet 2, contact 3 and 4, wiring copper coin 5 on the PTC element.When electric current surpasses the rated operational current of electric equipment, the temperature distortion of metal spring sheet, contact 3 and 4 is disconnected, this moment electric current from wiring copper coin 6 through PTC element, wiring copper coin 5 by, because of the PTC element heating is fast, the resistance of its resistance is very big with the small rising increase of temperature, make by its electric current very little, the thermal energy transfer of PTC element heating generation is simultaneously given the metal spring sheet, make it keep heating status, make the contact 3 and 4 can not be closed, the safety of assurance equipment, simultaneously, therefore the electric current of fuse is very little the time, can not blow, and does not often change fuse.
The utility model has the advantages that utilizing metallic spring and two heater elements of PTC element to consist of temperature control opens Close, when the reason that causes super-high-current is not got rid of, guarantee the metallic spring recovery that automatically resets of can not lowering the temperature Connect circuit, guarantee electric equipment safety, can also reduce the number of times that fuse blows, minimizing replacing fuse Trouble.
Claims (1)
- A kind of dual fail-safe temperature detect switch (TDS) comprises metal spring sheet 1, contact copper sheet 2, contact 3 and 4, wiring copper sheet 5 and 6, and fixed plastics 7 is characterized in that connecting a fast PTC element 8 between two wiring copper coins 5 and 6 of temperature detect switch (TDS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237617 CN2289295Y (en) | 1996-10-12 | 1996-10-12 | Double-safety temp.-controling switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237617 CN2289295Y (en) | 1996-10-12 | 1996-10-12 | Double-safety temp.-controling switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2289295Y true CN2289295Y (en) | 1998-08-26 |
Family
ID=33913150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96237617 Expired - Fee Related CN2289295Y (en) | 1996-10-12 | 1996-10-12 | Double-safety temp.-controling switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2289295Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520848A (en) * | 2018-06-11 | 2018-09-11 | 佛山市高明欧电子制造有限公司 | A kind of long-range current temperature controller |
| CN108615656A (en) * | 2018-06-11 | 2018-10-02 | 佛山市高明欧电子制造有限公司 | A kind of long-range current temperature controller of anti-low temperature turn on automatically |
-
1996
- 1996-10-12 CN CN 96237617 patent/CN2289295Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520848A (en) * | 2018-06-11 | 2018-09-11 | 佛山市高明欧电子制造有限公司 | A kind of long-range current temperature controller |
| CN108615656A (en) * | 2018-06-11 | 2018-10-02 | 佛山市高明欧电子制造有限公司 | A kind of long-range current temperature controller of anti-low temperature turn on automatically |
| CN108615656B (en) * | 2018-06-11 | 2023-09-01 | 佛山市高明欧一电子制造有限公司 | Automatic switch-on remote current temperature controller of low temperature prevention |
| CN108520848B (en) * | 2018-06-11 | 2023-09-01 | 佛山市高明欧一电子制造有限公司 | Remote current temperature controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |