CN2143853Y - Automatic alarm fully auto-set safety unit - Google Patents
Automatic alarm fully auto-set safety unit Download PDFInfo
- Publication number
- CN2143853Y CN2143853Y CN 92243180 CN92243180U CN2143853Y CN 2143853 Y CN2143853 Y CN 2143853Y CN 92243180 CN92243180 CN 92243180 CN 92243180 U CN92243180 U CN 92243180U CN 2143853 Y CN2143853 Y CN 2143853Y
- Authority
- CN
- China
- Prior art keywords
- earthing
- printed circuit
- circuit board
- pcb
- stitch
- 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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an automatic alarm fully auto-set safety unit which is composed of an alarm earthing device and a safety device. Light emitting diode, an earthing reed, a discharge tube, an earthing piece, an outside line pin and an earthing and alarming axis are arranged in an outer shell and a base and are fixed to a printed circuit board to form the alarm earthing device. The safety device is composed of a connection reed of an inner line pin, which is connected with the inner line pin and is respectively close to thermistor and is attached to a bimetallic strip through a heat conducting board. When the line encounters overvoltage and over current faults and has longer duration time, heat quantity which is generated by the discharge tube or the thermistor can be conducted to the bimetallic strip, and the bimetallic strip is contacted with the earthing piece in a deformation mode and is switched on with the alarm earthing device. The automatic alarm fully auto-set safety unit is arranged in a linear line connector of a main distribution frame of a telephone exchanger for acting the effects of protecting a device in a protect telephone station and personal safety.
Description
The utility model relates to a kind of security personnel's device that is installed on the telephone exchange main frame line bank in upright arrangement, when playing overvoltage, overcurrents such as subscribers feeder being met thunderbolt, forceful electric power induction to switch and other calculator room equipment and personal safety protection effect.
Though the Security Unit and the our factory 90205563.1 hot melt open type thermistor Security Units of domestic manufacturer's production at present can play the certain protection effect to the invasion and attack of various harmful power supplys; but because of the whole runback or can not alarm automatically of its main element; the element that damages also need be dismantled transposing, makes troubles, increases financial burden to the user.
The patent No. 91215753.4 " telephone main frame self-resetting type protector " just provides a kind of self-resetting type Security Unit, but it also needs manual operation, clicks the Reflector bar and could recover protection function.
The purpose of this utility model is to provide a kind of automatic alarm full self-resetting type Security Unit, and main components and parts all have the runback function and can alarm by automatic acousto-optic, reduces user's maintenance trouble, greatly facilitates user's use.
The utility model is achieved in that by being installed in shell, the base and being fixed on alarm, earthing device and the protective device that grounding reed, light-emitting diode, discharge tube, ground strip, grounding shaft, alarming axis, outer stitch on the printed circuit board (PCB) constitute to be formed, and protective device connects reed by interior stitch and is connected with interior stitch, and is close to thermistor respectively and is close to bimetal leaf by heat-conducting plate and forms.
Fig. 1. structural representation of the present utility model.
Fig. 2. the left view of Fig. 1.
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Printed circuit board (PCB) (3) one side is an epoxy plate, and one side is embedded with Copper Foil, and (printed circuit board (PCB) shown in Figure 1 (3) is the epoxy plate face) is at upper end Copper Foil place welding light-emitting diode (2), grounding reed (4), mid portion welding ground strip (8).
The welding of outer stitch (11) end and printed circuit board (PCB) (3), and the upper end elongated portion stretches under the discharge tube (5) in the depression, PTC thermistor (10) is close on outer stitch (11) one planes.Discharge tube (5) is stuck between grounding reed (4) and outer stitch (11) the upper end elongated portion.Interior stitch connects reed (6), and one side is close to PTC thermistor (10).Another side is close to heat-conducting plate (9), and the top is welded on printed circuit board (PCB) (3) and upward communicates with interior stitch (16).
One end of bimetal leaf (7) is an annular, is separately fixed at the both sides of ground strip (8), and other end is welded on printed circuit board (PCB) (3) and upward communicates with light-emitting diode (2), and heat-conducting plate (9) is close on a plane.
Alarming axis (14) is fixed and is welded on printed circuit board (PCB) (3) and upward communicates with light-emitting diode (2) by anchor ear (15).Grounding shaft (13) is welded on the printed circuit board (PCB) (3) by grounding shaft fixture (17), and communicates with ground strip (8), grounding reed (4).
Shell (1) covers light-emitting diode (2), and printed circuit board (PCB) (3) is held on the base (12).
When 220 volts of interchanges are touched in outside line, 500-600 lies prostrate direct current or is struck by lightning, two kinds of possibilities are arranged during the forceful electric power induction, the one, overvoltage, discharge tube (5) terminal voltage reaches ignition voltage and discharges, and at this moment electric current enters into discharge tube (5) from outer stitch (11), discharge tube (5) discharge, the two ends conducting is introduced ground wire by grounding reed (4), printed circuit board (PCB) (3), grounding shaft fixture (17), grounding shaft (13) with forceful electric power.
Shorter as the forceful electric power duration, then promptly recover automatically discharge tube (5) discharge back.Longer as the forceful electric power duration, discharge tube (5) discharge heating, heat transferred is to bimetal leaf (7), when temperature is elevated to a certain degree, bimetal leaf (7) distortion contacts with therebetween ground strip (8), at this moment connected alarm device action, light-emitting diode (2) is shinny, and alarming axis (14) sends alarm signal.
The 2nd, overcurrent, its phenomenon is a current state, makes user's current surge, utilizes the quick variation of PTC thermistor (10), (under normal circumstances, can make 10 Ω resistance rise to 20K Ω rapidly) circuit is similar to open-circuit condition, makes over-current phenomenon avoidance controlled.Automatically recover as shorter thermistor of duration (10), be delivered to bimetal leaf (7) as long then thermistor (10) evolution of heat of duration, when temperature reaches one regularly, bimetal leaf (7) distortion contacts with ground strip (8), send alarm signal, detailed process is the same with the long back action of overvoltage time not to be repeated.
After circuit is got rid of overvoltage or over current fault recovery normally, along with the reduction of temperature in the Security Unit, bimetal leaf (7) restores to the original state and ground strip (8) disengages, and promptly also disengages with alarm device, light-emitting diode (2) stops luminous, and alarm signal is removed.
The utility model is compared with prior art: because main components all adopts the bimetal leaf with runback function, thermistor, discharge tube, thereby can use for a long time, need not split out to change, alleviate user's maintenance trouble and financial burden, it is simple in structure, and can auto-alarming, automatically reset, do not need manually to go again operation, go hand-reset. Safe and convenient to use, interchangeability is good. Can replace original Security Unit to be installed on the protection gang in upright arrangement of all kinds of switch distributing frames, be a kind of desirable renewal product.
Claims (5)
1, the full self-resetting type Security Unit of a kind of automatic alarm, formed by being installed in the shell (1), base (12) and being fixed on alarm, earthing device and the protective device that light-emitting diode (2), grounding reed (4), discharge tube (5), ground strip (8), grounding shaft (13), alarming axis (14), outer stitch (11) on the printed circuit board (PCB) (3) constitute, stitch connects reed (6) and interior stitch (16) is connected and is close to respectively thermistor (10) and is close to bimetal leaf (7) formation protective device by heat-conducting plate (9) in it is characterized in that.
2, Security Unit according to claim 1, it is characterized in that bimetal leaf (7) one ends are annular, be separately fixed at the both sides of ground strip (8), other end is welded on printed circuit board (PCB) (3) and upward communicates with light-emitting diode (2), and heat-conducting plate (9) is close on a plane.
3, Security Unit according to claim 1 and 2, stitch connects reed (6) in it is characterized in that, and one side is close to PTC thermistor (10), and another side is close to heat-conducting plate (9), and the top is welded on printed circuit board (PCB) (3) and upward communicates with interior stitch (16).
4, Security Unit according to claim 1, it is characterized in that alarming axis (14) is fixing and be welded on printed circuit board (PCB) (3) and go up and communicate with light-emitting diode (2) by anchor ear (15), it is last and communicate with ground strip (8), grounding reed (4) that grounding shaft (13) is welded on printed circuit board (PCB) (3) by grounding shaft fixture (17).
5, Security Unit according to claim 1, it is characterized in that the welding of outer stitch (11) end and printed circuit board (PCB) (3), the upper end elongated portion stretches in the depression of discharge tube (5) lower end, PTC thermistor (10) is close on outer stitch (11) one planes, and discharge tube (5) is stuck between grounding reed (4) and outer stitch (11) the upper end elongated portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92243180 CN2143853Y (en) | 1992-11-29 | 1992-11-29 | Automatic alarm fully auto-set safety unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92243180 CN2143853Y (en) | 1992-11-29 | 1992-11-29 | Automatic alarm fully auto-set safety unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2143853Y true CN2143853Y (en) | 1993-10-13 |
Family
ID=33782805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92243180 Expired - Fee Related CN2143853Y (en) | 1992-11-29 | 1992-11-29 | Automatic alarm fully auto-set safety unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2143853Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634704A (en) * | 2012-08-24 | 2014-03-12 | 四川联友电讯技术有限公司 | Digital distribution frame with protection cover |
-
1992
- 1992-11-29 CN CN 92243180 patent/CN2143853Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634704A (en) * | 2012-08-24 | 2014-03-12 | 四川联友电讯技术有限公司 | Digital distribution frame with protection cover |
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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 |