CN203119439U - Security unit with incoming call prompt function - Google Patents
Security unit with incoming call prompt function Download PDFInfo
- Publication number
- CN203119439U CN203119439U CN 201320121514 CN201320121514U CN203119439U CN 203119439 U CN203119439 U CN 203119439U CN 201320121514 CN201320121514 CN 201320121514 CN 201320121514 U CN201320121514 U CN 201320121514U CN 203119439 U CN203119439 U CN 203119439U
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- Prior art keywords
- security unit
- emitting diode
- spring
- circuit board
- shell
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- 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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- Fire Alarms (AREA)
Abstract
The utility model relates to the technical field of communication, and discloses a security unit with an incoming call prompt function. The security unit comprises a shell, a fuse link, a spring, a hot melting block and a circuit board. The fuse link, the spring, the hot melting block and the circuit board are arranged inside the shell. Under the elastic force of the spring, the hot melting block is in an adhered fit with the fuse link. Testing contacts, input contacts and pins are arranged on the outer side of the shell. A light emitting diode is further arranged on the shell and connected with the circuit board. With the light emitting diode, the incoming call prompt function can be realized; and when a circuit indicates that ringing current is switched on, the light emitting diode lights, wire position can be checked visually, wire checking time is shortened, examining and repairing efficiency is improved, and thus, use condition of the circuit can be judged.
Description
Technical field
The utility model relates to communication technical field, specifically a kind of Security Unit that has incoming telegram prompting function.
Background technology
The Security Unit of main frame plays overvoltage, overcurrent protection alarm effect in communication line, so-called overvoltage, overcurrent refer to appear at the external voltage and current that surpasses the normal working voltage of equipment own and electric current on the equipment.Security Unit develops along with the progress of overvoltage, over-current protection device.At present, be divided into mainly by device and product structure that gas discharge tube adds PTC and semiconductor discharge tube adds two types of PTC.
Gas discharge tube adds the operation principle of PTC Security Unit: when the outside line overvoltage, the gas discharge tube discharge, electric current in the outside line is inducted into ground, if the duration is longer, the heat that the discharge tube continuous discharge is sent makes the fusing of hot melt piece, make outside line directly conducting over the ground, realize the short circuit fail safe, simultaneously the outputting alarm signal; When circuit suffered the overcurrent invasion and attack, the PTC resistance rose rapidly, makes circuit be similar to open-circuit condition, and the overcurrent phenomenon is controlled, and afterwards, overcurrent disappears, and PTC recovers automatically.The pattern of gas discharge tube is ionic discharge, and discharge is the temperature height afterwards, may influence the useful life of main frame; Gas discharge tube exists because of the chronic leakage failure phenomenon simultaneously, and lost efficacy back outside line and ground wire present open-circuit condition, and in this case, the protection reliability of Security Unit reduces, even can not play due protective effect.
Semiconductor discharge tube adds the PTC Security Unit except the basic function with gas discharge pipe safety unit, also has following characteristics: transistor is because low, the fire hazardous not of when discharge temperature; There is not the chronic leakage phenomenon, the protection good reliability of Security Unit; Semiconductor discharge tube is fast to the reaction speed of surge impact voltage.But its defective is, when the audio frequency wire jumper was mixed and disorderly, it was very inconvenient to search number, and service work efficient is low.
Summary of the invention
The purpose of this utility model provides a kind of Security Unit that has incoming telegram prompting function.When solution audio frequency wire jumper is mixed and disorderly, search the very inconvenient problem of number, also can be used for pointing out circuit just at work, improve overhaul efficiency.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The Security Unit that has incoming telegram prompting function, comprise housing, and the fuse link, spring, hot melt piece and the circuit board that are arranged on enclosure interior, under the elastic force effect of spring, hot melt piece and fuse link are fitted, be provided with test contact, input contact and pin in hull outside, also be provided with light-emitting diode on housing, described light-emitting diode is connected with circuit board.
The beneficial effects of the utility model are:
The utility model is realized incoming telegram prompting function with light-emitting diode, and when circuit transmitted the connection of ringing-current circuit, lumination of light emitting diode can be checked the line position intuitively, shortened the line inspection time, had improved overhaul efficiency, whereby the operating position of decision circuitry.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is internal structure schematic diagram of the present utility model.
Fig. 3 is circuit diagram of the present utility model.
Among the figure: 1, test contact; 2, pin; 3, input contact; 4, light-emitting diode; 5, fuse link; 6, spring; 7, hot melt piece; 8, circuit board.
Embodiment
Shown in Fig. 1 to 2, the Security Unit that has incoming telegram prompting function, comprise housing, and the fuse link 5, spring 6, hot melt piece 7 and the circuit board 8 that are arranged on enclosure interior, under the elastic force effect of spring 6, hot melt piece 7 is fitted with fuse link 5, is provided with test contact 1, input contact 3 and pin 2 in hull outside, also be provided with light-emitting diode on housing, described light-emitting diode 4 is connected with circuit board 8.
The utility model is particluarly suitable for central machine room and uses in enormous quantities, is covered with whole distributing frame, in the line inspection or when checking, can--observe the distributing frame Security Unit and dodge disconnected situation--that the mode of call wire position is carried out the line inspection, increases work efficiency by calling.
More than disclosed be the specific embodiment of this patent only, but this patent is not limited thereto, for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, the distortion of making should be considered as belonging to the utility model protection range.
Claims (1)
1. the Security Unit that has incoming telegram prompting function, comprise housing, and the fuse link, spring, hot melt piece and the circuit board that are arranged on enclosure interior, under the elastic force effect of spring, hot melt piece and fuse link are fitted, be provided with test contact, input contact and pin in hull outside, also be provided with light-emitting diode on housing, described light-emitting diode is connected with circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121514 CN203119439U (en) | 2013-03-17 | 2013-03-17 | Security unit with incoming call prompt function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121514 CN203119439U (en) | 2013-03-17 | 2013-03-17 | Security unit with incoming call prompt function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119439U true CN203119439U (en) | 2013-08-07 |
Family
ID=48899756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121514 Expired - Fee Related CN203119439U (en) | 2013-03-17 | 2013-03-17 | Security unit with incoming call prompt function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113573508A (en) * | 2021-07-22 | 2021-10-29 | 深圳市联明电源有限公司 | DC/DC power module with self-destruction disposable mounting pin |
-
2013
- 2013-03-17 CN CN 201320121514 patent/CN203119439U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113573508A (en) * | 2021-07-22 | 2021-10-29 | 深圳市联明电源有限公司 | DC/DC power module with self-destruction disposable mounting pin |
| CN113573508B (en) * | 2021-07-22 | 2022-04-26 | 深圳市联明电源有限公司 | DC/DC power module with self-destruction disposable mounting pin |
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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: 20130807 Termination date: 20140317 |