CN2517161Y - Safety unit of main distribution frame - Google Patents
Safety unit of main distribution frame Download PDFInfo
- Publication number
- CN2517161Y CN2517161Y CN 01277176 CN01277176U CN2517161Y CN 2517161 Y CN2517161 Y CN 2517161Y CN 01277176 CN01277176 CN 01277176 CN 01277176 U CN01277176 U CN 01277176U CN 2517161 Y CN2517161 Y CN 2517161Y
- Authority
- CN
- China
- Prior art keywords
- close
- framework
- switch
- hot melt
- protection
- 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 secure unit of coil holder, an arrangement disposed on the coil holder for protecting the phone switch, comprising an inner and outer trim, grounding and warning trim, connected to the framework, which is fixed on the circuit board with indicators, and the protection element manifold block CLP which is also connected on the circuit board and separately connected with the two ends of the sampling resistance between the inner and outer trim, the grounding and warning trim, and a protection switch which is connected with the outer trim, a invalidation switch which is connected between the grounding and warning trim, connecting with the base and disposed in the housing. The invalidation switch comprises a ground lug, disposed on the framework and clinging to spring, which is connected with the hot frit of outside plastic through a closely-linked grounding plate, the warning plate, disposed on the circuit board, and the manifold block CLP, closely-link with the hot frit. The utility model has the advantages that the protection and invalidation switch can be repaired and used repeatedly, the protection function is more perfect in order to improve the reliability and sensitivity of the guard, and the using is safer.
Description
Technical field
The utility model relates to a kind of post and telecommunications; be installed in the device that is used to protect telephone exchange safety on the main frame; the Security Unit of main frame carries out overvoltage, overcurrent first class of protection with it to telephone exchange user plate, protection attendant's the personal safety and the normal operation of switch.
Background technology
Though the Security Unit of existing main frame is various in style, function is different; but majority still adopts gas, semiconductor discharge tube to make over-voltage protection element, heat coil or semistor PTC and makes overflow protecting element, and overcurrent, each alarm device of overvoltage protection are arranged.
It is a kind of with the Security Unit of integrated CLP as the main frame of overcurrent, over-voltage protection element that number of patent application 01253385.8 " Security Unit of main frame " just provides.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of Security Unit of main frame is provided, makes its protective value more perfect, use safety and reliability, and highly sensitive, protection speed is fast, for market provides many kinds, satisfies requirements of different users and selection.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the Security Unit of main frame is by in one pair; outer stitch; be connected on the framework; be fixed on the wiring board of tape light; also be connected with protection component integrated package CLP on the wiring board; respectively with interior; the two ends of the sample resistance that connects between outer stitch connect and grounding leg; the alarm pin connects; and the stitch place is connected with protection switch outside; grounding leg; be connected with the thermal failure switch between the alarm pin; grounding leg; be installed in after alarming pin and base being connected and constitute whole the composition in the housing; and described thermal failure switch is by ground strip is installed on the described framework; and be close to spring; spring is connected with the hot melt piece by the ground connection moving plate of being close to again; the ground connection moving plate also cooperate with fixing alarm sheet in the circuit board constitute, described hot melt piece is close to integrated package CLP.
Compared with prior art; advantage of the present utility model is: protection switch in the Security Unit of the main frame of this structure and thermal failure switch all can be repaired; reuse; and the lower hot melt piece of heat fusion joint has been adopted in the thermal failure beginning; the structure of being close to core protection component integrated package CLP, needing only one has big electric current to pass through, and makes integrated package CLP heating; the hot melt piece will melt, and thermal failure switch just action reaches the purpose that long-term alarm is exported.The thermal failure switch part of this kind structure is few; be installed in and make its more compact structure in the framework and volume is little; can be supporting with various Security Units dissimilar, the main frame that has core protection component integrated package CLP structure, use; improved its protection reliability and sensitivity, used safer.
Description of drawings
Fig. 1. structural representation of the present utility model;
Fig. 2. the vertical view of Fig. 1:
Fig. 3. the upward view of Fig. 1;
Fig. 4. the utility model overvoltage, overcurrent protection line map.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Framework (8) is the strip that there are the flat pins of forward and backward 3 rectangles (20) on a surface, and the middle end in surface has rectangular through-hole in addition, and other holds gapped groove (18) and groove (19); Two rectangle jacks are respectively arranged on the two ends, have on the surface between two jacks one rise between muscle.
The front top edge welding of wiring board (3) is indicator light (1) light-emitting diode fixedly, the fixing alarm of lower edge welding pin (17), grounding leg (11), in the through hole of two ends the grafting two ends respectively clamping connect the framework (8) of a stiff end of a pair of inside and outside stitch (4), (9), and a stiff end of inside and outside stitch (4), (9) is weldingly fixed on the wiring board (3) again; Also weld fixedly integrated package CLP (6) in the middle of the back side; its 1 leading foot is connected (alarm signal end) with the positive pole of indicator light (1) light-emitting diode; 2,5 leading foots connect an end of a pair of interior stitch (4) a ', b ' and a pair of sample resistance (7), 3,4 leading foots that bull welds together and two protection switches (5) k
1, k
2An end and the in addition end of sample resistance connect, protection beginning end in addition is connected with a pair of outer stitch (9) a, b.
Heat portective switch k3 places ground strip (16), spring (15) successively by in the rectangular through-hole in the middle of the framework (8), be close to spring (15) and in clearance groove (18) the tight fit cross section be
The ground connection moving plate (13) of shape makes its termination of being close to hot melt piece (14), and hot melt piece (14) is close in the middle groove (19) of framework (8) termination in addition, in the tight again embedding cross section of end in addition of clearance groove (18) is
Alarm sheet (12) shape and that be weldingly fixed on the wiring board (3) constitutes, and the lower surface of hot melt piece (14) is close to integrated package CLP (6) installation.
The wiring board (3) that assembles is inserted base (10) respectively by the grounding leg on it (11), alarm pin (17) to be gone up in the corresponding jack, put shell (2) and utilize two protruding buttons and shell (2) on the base (10) to connect into integral body, the Security Unit of main frame is assembled into.
When circuit generation overcurrent or overvoltage; overcurrent, overvoltage stitch (9) outside a pair of enters; arrive integrated package CLP (6) inside; go up detected overcurrent, overpressure situation according to sample resistance (7); or door action make outside line over the ground, to alarm pin closure, thereby realize discharging overvoltage, overcurrent over the ground, reach the purpose of overvoltage, overcurrent protection; while outputting alarm signal, indicator light (1) is bright.
When if long-time high voltage or big electric current take place in circuit, integrated package CLP (6) is except that having above-mentioned action, produce a large amount of heats simultaneously, make hot melt piece (14) fusing of being close to it,, promote ground connection moving plate (13) forward by the effect of spring (15), it is contacted with alarm sheet (12) on the wiring board (3), and, make connected indicator light (1) bright by alarm sheet (12), send alarm signal.Then, make protection switch (5) action, reach the purpose of outside line open circuit, thereby eliminated because the hidden danger that high voltage or big electric current are encroached on personal and equipment has improved the reliability of protection by a large amount of heats of generation.
Claims (3)
1. the Security Unit of a main frame; be connected on the framework (8) by a pair of inside and outside stitch (4), (9); be fixed on the wiring board (3) of tape light (1); also be connected with protection component integrated package CLP (6) on the wiring board (3); respectively with inside and outside stitch (4), (9) between the two ends of the sample resistance (7) that is connected connect and grounding leg (11), alarm pin (17) connect; stitch (9) locates to be connected with protection switch (5) outside, is connected with the thermal failure K switch between grounding leg (11), alarm pin (17)
3, grounding leg (11), alarm pin (17) and be installed in housing (2) after base (10) is connected in constitute the integral body composition, it is characterized in that described thermal failure K switch
3By ground strip (16) is installed on the described framework (8), and be close to spring (15), spring (15) is connected with hot melt piece (14) by the ground connection moving plate of being close to (13) again, ground connection moving plate (13) also be fixed on wiring board (3) on alarm sheet (12) cooperate constitute, described hot melt piece (14) is close to integrated package CLP (6).
2. Security Unit according to claim 1 is characterized in that framework (8) is the strip that there are the flat pins of forward and backward 3 rectangles (20) on a surface, and the middle end in surface has rectangular through-hole in addition, and other holds gapped groove (18) and groove (19); Two rectangle jacks are respectively arranged on the two ends, have on the surface between two jacks one rise between muscle.
3. Security Unit according to claim 1 is characterized in that heat portective switch k3 by in the rectangular through-hole in the middle of the framework (8), places ground strip (16), spring (15) successively, be close to spring (15) and in clearance groove (18) the tight fit cross section be
The ground connection moving plate (13) of shape makes its termination of being close to hot melt piece (14), and hot melt piece (14) is close in the middle groove (19) of framework (8) termination in addition, in the tight again embedding cross section of end in addition of clearance groove (18) is
Alarm sheet (12) shape and that be weldingly fixed on the wiring board (3) constitutes, and the lower surface of hot melt piece (14) is close to integrated package CLP (6) installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277176 CN2517161Y (en) | 2001-12-28 | 2001-12-28 | Safety unit of main distribution frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277176 CN2517161Y (en) | 2001-12-28 | 2001-12-28 | Safety unit of main distribution frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2517161Y true CN2517161Y (en) | 2002-10-16 |
Family
ID=33681042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01277176 Expired - Fee Related CN2517161Y (en) | 2001-12-28 | 2001-12-28 | Safety unit of main distribution frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2517161Y (en) |
-
2001
- 2001-12-28 CN CN 01277176 patent/CN2517161Y/en not_active Expired - Fee Related
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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 |