CN2233636Y - Protecting unit - Google Patents
Protecting unit Download PDFInfo
- Publication number
- CN2233636Y CN2233636Y CN 95209533 CN95209533U CN2233636Y CN 2233636 Y CN2233636 Y CN 2233636Y CN 95209533 CN95209533 CN 95209533 CN 95209533 U CN95209533 U CN 95209533U CN 2233636 Y CN2233636 Y CN 2233636Y
- Authority
- CN
- China
- Prior art keywords
- reed
- reeds
- line
- outside line
- action
- 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
Links
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a protector for general line-distributors of telephones, which is composed of a plastic frame, two inner line reeds, two outer line reeds, two ground line reeds, a signal reed, two action reeds, two collects, two PTC pieces, two discharge tubes, two fusible pieces, and a luminous tube, wherein, the two inner line reeds, the two outer line reeds, the two ground line reeds, the signal reed, the two action reeds, the two collects, the two PTC pieces, the two discharge tubes, the two fusible pieces, and the luminous tube are arranged in the plastic frame, the fusible pieces and the discharge tubes are elastically connected between the outer line reeds and the action reeds, the PTC pieces are elastically connected between the outer line reeds and the inner line reeds, the action reeds are elastically connected with the ground line reeds, the collects are elastically connected with one end of the luminous tube, and the other end of the luminous tube is connected with the signal reed. When the over voltage and the over current phenomena occur, the discharge tubes can discharge electricity for the protection, the fusible pieces are melted, the action reeds are contacted with the collects and the outer line reeds, the electricity can enter the ground, and the light can be given out quickly.
Description
The utility model relates to the interconnection device between a kind of telephone communication switching center, relates to the protector that a kind of telephone distributing frame is used or rather.
Protector is serially connected between the outside line and interior lines of exchange room distributing frame; the effect of general using thermal effect realizes the over-voltage over-current protection to equipment in the machine room; under the normal talking state; in; constitute signal path by the cartridge fuse that is connected in series with it between outside line; when the over-voltage and over-current situation occurring; fuse is disconnected; the discharge tube ionic discharge is done protection fast; the snap switch that contains the hot melt sheet simultaneously makes outside line and the direct short circuit of ground wire because of the fusing volume-diminished, and melt short circuit ground wire is lighted luminous tube with light-emitting diode one end (the light-emitting diode other end is connected with the alarm negative supply) and indicated this Security Unit simultaneously.The Security Unit that has replaces cartridge fuse with the PTC resistor disc, and resistance heating, resistance increase effect make the discharge tube ionic discharge and make the fuse piece fusing when utilizing overcurrent.
Security Unit with above-mentioned basic structure has the problem of following several respects: the element that constitutes snap switch is generally more, as comprise copper cap, hot melt sheet, chassis, spring and indication axle etc., all bring big difficulty for assembling and assembly quality inspection thereof, reduced production efficiency; A Security Unit base frame domestic demand is provided with a plurality of minutes frames and fixes reed, causes the Security Unit volume to increase; Reed and other elements adopt and are welded to connect, and cause reliability to reduce.
The purpose of this utility model is a kind of Security Unit of design, and all elements all are assemblied in the open type plastics base frame, and it is little, easy to assembly to have a volume, can make the characteristics of over-voltage over-current protection.
Security Unit of the present utility model, connect and compose by plastics base frame, two outside lines, two interior lines, two ground wires, two PTC resistor discs, two gas discharge tubes, two elastic switchs, a light-emitting diode, the alarm signal line that is connected with light-emitting diode one end, it is characterized in that:
Described outside line is an outside line reed, and described interior lines are interior lines reeds, and described ground wire is a ground wire reed, and described alarm signal line is a signal reed, and described elastic switch is made of action reed, folder spring and fuse sheet;
Outside line reed one end in contact plastics base frame, position, outside line reed stage casing contact fuse sheet one end, outside line reed other end contact PTC resistor disc one end;
Interior lines reed one end in contact plastics base frame, the interior lines reed other end contact PTC resistor disc other end;
Ground wire reed one end becomes Elastic Contact to be connected with described action reed one end;
Action reed stage casing part Elastic Contact discharge tube one end, the discharge tube other end contact fuse sheet other end, the action reed other end is near the outside line reed and press from both sides spring, folder spring clamping light-emitting diode anode.
Described signal reed is the central axis position that vertically is arranged on the plastics base frame, and described outside line reed is
Type is vertically set on the central axis both sides,
The left and right space of type outside line reed respectively and between the reed of interior lines Elastic Contact PTC resistor disc and and the action reed between Elastic Contact discharge tube and fuse sheet.
Described light-emitting diode is installed in the square hole of plastics base frame end.
Described plastics base frame one side is a line jack in two, and plastics base frame opposite side is two outer line jacks, two ground wire jacks and a signal alarm line jack.
PTC resistor disc resilient clamp is between interior lines reed and outside line reed, and discharge tube and fuse sheet resilient clamp had both been separated with the outside line reed also with the action reed of ground wire elasticity of spring leaf contact and to have been separated with the folder spring between outside line reed and action reed.Under the normal talking state, audio-frequency current by an interior lines reed through a PTC resistor disc to an outside line reed, and return another outside line reed, another PTC resistor disc to another interior lines reed through phone cable and substation.When over-voltage and over-current appears in transient state; PTC resistor disc heating resistance increases rapidly; terminal voltage raises and puts on resilient clamp on the fuse sheet and discharge tube between outside line reed and action reed, and the ground wire reed ionic discharge of gas discharge tube by being connected with the action elasticity of spring leaf protected fast.When the overvoltage over-current phenomenon avoidance surpasses certain hour, because discharge tube continuous discharge heating, make fuse sheet melted by heat volume-diminished, rely on the elastic restoring force of self to move with the action reed of discharge tube Elastic Contact, contact outside line reed and folder spring, the outside line reed directly connects the ground wire reed by the action reed, simultaneously the light-emitting diode anode connects the ground wire reed by folder spring contact action reed and by the action reed, makes to form current path with the alarm signal reed and light light-emitting diode and do light alarm indication.
Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing
Fig. 1. the Security Unit electrical schematic diagram
Fig. 2. Security Unit side-looking structural representation
Fig. 3. Security Unit plan structure schematic diagram
Referring to Fig. 1, a, b connect outside line among the figure, a ', b ' connection interior lines, and S connects the alarm signal line, and 3 is light-emitting diode, and 2 is the PTC resistor disc, and 1 is discharge tube, and 5 is fuse sheet, and 6 are the action reed, and 7 are the folder spring.
During the normal talking state, under-48V working power, audio-frequency current arrives a by a ' through a PTC resistor disc 2, again by a to external cable, get back to b through phone, through another PTC resistor disc 2 to b ', constitute path again, remaining part all is failure to actuate at this moment.When anomaly such as outside line a or b touching 220V voltage occurring; the high-current leading that flows through PTC resistor disc 2 plays the resistance heating; resistance raises rapidly; terminal voltage directly is added on the discharge tube 1; when reaching the igniting place value of gas discharge tube; discharge tube 1 begins ionic discharge over the ground to reduce the dangerous voltage in the outside line, protects telephone plant fast.But when the overlong time of outside line touching 220V when surpassing 15 seconds, discharge tube 1 continuous discharge heating, fuse sheet 5 melted by heat volume-diminished, 6 actions of action reed and contact outside line a or the b that are connected with ground wire, with the direct ground connection of 220V voltage, removed the work of discharge tube, in order to avoid long-time discharge damages, move also contact clip spring 7 of reed simultaneously, in light-emitting diode 3 access warning circuit.
Referring to Fig. 2, Security Unit side-looking structure illustrates the distributed architecture up and down of each element in 1/2 Security Unit.11 is the plastics base frame.Outside line reed 10 is
Type, its leftward space and 9 resilient clamp PTC of interior lines reed resistor disc 2, its rightward space and action 6 resilient clamp fuse sheets 5 of reed and discharge tube 1.Ground wire reed 8 one ends become embedding packet mode elasticity to be connected with action reed 6 one ends.4 is the signal reed among the figure, and 7 are the folder spring, and folder spring 7 and outside line reed 10 ends are all near action reed 6, and as seen from the figure, when fuse sheet 5 fusings, action reed 6 relies on the elastic restoring force of self to move downwards and contacts outside line reed 10 and folder spring 7.
Referring to Fig. 3, Security Unit becomes the axial symmetry setting, and action reed 6 is positioned at the Security Unit the superiors, has covered partial discharge pipe 1, part PTC resistor disc 2, ground wire reed 8, interior lines reed 9, and has all covered the outside line reed.Luminous tube 3 is located in the square hole of Security Unit one end, light-emitting diode 3 one end pins and signal reed 4 Elastic Contact, and other end pin and folder spring 7 Elastic Contact, signal reed 4 is in the central axis position of Security Unit.As seen, then connect light-emitting diode when the action reed moves touching folder spring 7 downwards among the figure, form path with signal reed 4, alarm signal enters in the security system of distributing frame.There is interior line jack at reed 9 places, Security Unit interior lines; there are ground wire jack, alarm signal line jack and outer line jack (invisible among the figure) in Security Unit ground wire reed 8 places; in the safety wire connection row that inserts distributing frame, finish protection jointly to the telephone exchange and the person.
The remaining part of the utility model except that fuse sheet, PTC resistor disc and discharge tube all adopts reed structure, and rely on Elastic Contact to finish to be electrically connected, to make simple in structure, compact, easy to assembly, improve assembly work efficient and functional reliability, and be convenient to the macroscopic examination assembly quality.
The Security Unit thickness that the utility model improves structure reduces 1/2, thereby has significantly reduced the height dimension of safety wire connection row.
Claims (4)
1. Security Unit is connected and composed by plastics base frame, two outside lines, two interior lines, two ground wires, two PTC resistor discs, two gas discharge tubes, two elastic switchs, a light-emitting diode, the alarm signal line that is connected with light-emitting diode one end, it is characterized in that:
Described outside line is an outside line reed, and described interior lines are interior lines reeds, and described ground wire is a ground wire reed, and described alarm signal line is a signal reed, and described elastic switch is made of action reed, folder spring and fuse sheet;
Outside line reed one end in contact plastics base frame, position, outside line reed stage casing contact fuse sheet one end, outside line reed other end contact PTC resistor disc one end;
Interior lines reed one end in contact plastics base frame, the interior lines reed other end contact PTC resistor disc other end;
Ground wire reed one end becomes Elastic Contact to be connected with described action reed one end;
Action reed stage casing part Elastic Contact discharge tube one end, the discharge tube other end contact fuse sheet other end, the action reed other end is near the outside line reed and press from both sides spring, folder spring clamping light-emitting diode anode.
2. Security Unit according to claim 1 is characterized in that: described signal reed is the central axis position that vertically is arranged on the plastics base frame, and described outside line reed is
Type is vertically set on the central axis both sides,
The left and right space of type outside line reed respectively and between the reed of interior lines Elastic Contact PTC resistor disc and and the action reed between Elastic Contact discharge tube and fuse sheet.
3. Security Unit according to claim 1 is characterized in that: described light-emitting diode is installed in the square hole of plastics base frame end.
4. Security Unit according to claim 1 is characterized in that: described plastics base frame one side is a line jack in two, and plastics base frame opposite side is two outer line jacks, two ground wire jacks and a signal alarm line jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95209533 CN2233636Y (en) | 1995-05-02 | 1995-05-02 | Protecting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95209533 CN2233636Y (en) | 1995-05-02 | 1995-05-02 | Protecting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2233636Y true CN2233636Y (en) | 1996-08-21 |
Family
ID=33860515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95209533 Expired - Fee Related CN2233636Y (en) | 1995-05-02 | 1995-05-02 | Protecting unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2233636Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440669C (en) * | 2004-05-17 | 2008-12-03 | 上海凯青通信配件有限公司 | Open-circuit protector for security unit |
-
1995
- 1995-05-02 CN CN 95209533 patent/CN2233636Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440669C (en) * | 2004-05-17 | 2008-12-03 | 上海凯青通信配件有限公司 | Open-circuit protector for security unit |
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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 |