CN2909507Y - Safety unit - Google Patents
Safety unit Download PDFInfo
- Publication number
- CN2909507Y CN2909507Y CN 200520108033 CN200520108033U CN2909507Y CN 2909507 Y CN2909507 Y CN 2909507Y CN 200520108033 CN200520108033 CN 200520108033 CN 200520108033 U CN200520108033 U CN 200520108033U CN 2909507 Y CN2909507 Y CN 2909507Y
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- CN
- China
- Prior art keywords
- reed
- outside line
- groove
- frame
- utility
- 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
A security unit arranged on a distribution frame of a telephone switchboard room comprises a light emitting diode (1), a frame (3), a circuit board (5), a signal post (8), an outer reed (10), a discharge tube (12), a hot-melt piece (16), a spring (17) and a PTC (19). In order to enhance the security performance, the utility model arranges a U-shaped or L-shaped moving outer reed (11) in a groove of the frame (3), whose top end is in elastic contact with the outer reed (10), and the utility model further arranges a reed receding recess (20) in the groove of the frame (3). The utility model can display an alarm against an overvoltage or an overcurrent and provide safety protection, meeting the C-level Qualification under 5.4.7.2 Qualifications in the industrial standard of China for communication (YD/T694-2004) - Main Distribution Frame.
Description
Affiliated technical field
The utility model relates to a kind of Security Unit that is assemblied on the distributing frame of exchange room, can realize safeguard protection and display alarm to equipment overvoltage, overcurrent in the machine room.
Background technology
At present, known Security Unit generally constitutes by discharge tube, PTC, hot melt sheet and light-emitting diode etc.When overvoltage, overcurrent situations appear in communication loop, though existing Security Unit can make its outside line and earth short and light the diode displaying alarm; But it is difficult to be butted on accidents such as extra-high pressure, big electric current or thunderbolt, so its security performance is still on the low side, also is difficult to reach the C level qualification determination in the 5.4.7.2 qualification determination in China's communications industry standard (YD/T694-2004) " main frame ".
Summary of the invention
The utility model is intended to overcome the problems and shortcomings of depositing in the above-mentioned prior art, proposes a kind ofly can improve its safeguard protection performance, and can satisfy the Security Unit of C level qualification determination requirement in the national sector standard.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of Security Unit that is useful on the telephone distributing frame; it is by Light-Emitting Diode (1); shell (2); framework (3); circuit board (5); signal lever (8); outside line reed (10); discharge tube (12); signal patch (14); hot melt sheet (16); spring (17); outside line sheet (18); PTC (19) etc. form; be provided with one and disconnect protective device; between discharge tube (12) in framework (3) groove and the spring (17) clamping one shape be the motion outside line reed (11) of U or L shape, its action reed top ends of motion outside line reed (11) and outside line reed (10) are Elastic Contact.When motion outside line reed (11) and outside line reed (10) when being Elastic Contact, expression electrically contacts, work is in normal condition, in a single day overvoltage appears in order circuit, during overcurrent fault, discharge tube (12) discharge generation heat also makes hot melt sheet (16) soften (fusing), meanwhile, motion outside line reed (11), displacement movement takes place in discharge tube (12) and motion ground wire sheet (15) under the effect of spring (17) elastic force, motion ground wire sheet (15) touches signal patch (14) and lights light-emitting diode (1) display alarm as a result, its top ends of motion outside line reed (11) and outside line reed (10) disconnect, and under the resilient force of self, its action reed of motion outside line reed (11) partly enters shell fragment on the framework (3) groove (20) of shrinking back.At this moment, display alarm and realized the purpose of outside line input open-circuit-protection.
The beneficial effects of the utility model are, alarm in time, security performance is improved and meets the C level qualification determination in the qualified formulation of 5.4.7.2 in China's communications industry standard (YD/T694-2004) " main frame ", and promptly Security Unit is except that satisfying B level qualification determination and satisfy that the outside line input is opened a way or input current is limited in 50mA with rower requirement such as interior.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a side-looking structural representation of the present utility model.
Fig. 2 is a plan structure schematic diagram of the present utility model.
4. bases among the figure, 6. interior lines output chip, 7. ground wire bar, 9. interior lines reed, 13. ground wire sheets.
Embodiment
Essential structure of the present utility model as shown in Figure 1 and Figure 2, in Fig. 2, the motion outside line reed (11) of be arranged on clamping between discharge tube (12) in framework (3) groove and the spring (17) one U or L shape, if adopt U-shaped line of motion reed, this reed is actually and is formed by upper and lower action reed disjunctor, the length of its upper and lower action reed can be taken the circumstances into consideration each calmly, and the length of spring leaf of promptly moving can correspondingly also can there are differences; If adopting L shaped motion outside line reed (11) then is the single action reed.No matter be to adopt U or L shaped motion outside line reed (11) wherein must have an action reed top ends and outside line reed (10) to be Elastic Contact.In addition, the inside and outside end face in bottom of motion outside line reed (11) is then respectively by discharge tube (12) and spring (17) clamping and keep in touch.In framework (3) groove, promptly U or L shaped motion outside line reed (11) and outside line reed (10) are on the respective block groove of Elastic Contact and also are provided with one for the used groove of shrinking back (20) of action reed.The groove (20) of shrinking back can guarantee that its top ends of motion outside line reed (11) again can't contact with outside line reed (10) disconnection in a single day.
Claims (2)
1, a kind of Security Unit that is useful on the telephone distributing frame, it is made up of light-emitting diode (1), shell (2), framework (3), circuit board (5), signal lever (8), outside line reed (10), discharge tube (12), signal patch (14), hot melt sheet (16), spring (17), outside line sheet (18), PTC institutes such as (19), it is characterized in that being arranged on clamping between discharge tube (12) and the spring (17) in framework (3) groove one shape be the motion outside line reed (11) of U or L shape, it moves motion outside line reed (11) reed top ends and outside line reed (10) and is Elastic Contact.
2, Security Unit according to claim 1 is characterized in that in framework (3) groove, promptly is provided with the reed groove (20) of shrinking back on U or L shaped motion outside line reed (11) and outside line reed (10) are the respective block groove of Elastic Contact in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520108033 CN2909507Y (en) | 2005-05-18 | 2005-05-18 | Safety unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520108033 CN2909507Y (en) | 2005-05-18 | 2005-05-18 | Safety unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2909507Y true CN2909507Y (en) | 2007-06-06 |
Family
ID=38128725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520108033 Expired - Fee Related CN2909507Y (en) | 2005-05-18 | 2005-05-18 | Safety unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2909507Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673969B (en) * | 2009-09-23 | 2011-12-07 | 辽宁省电力有限公司葫芦岛供电公司 | Lightning stroke expansion displayer of high-voltage power transmission line |
-
2005
- 2005-05-18 CN CN 200520108033 patent/CN2909507Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673969B (en) * | 2009-09-23 | 2011-12-07 | 辽宁省电力有限公司葫芦岛供电公司 | Lightning stroke expansion displayer of high-voltage power transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070606 Termination date: 20100518 |