CN100440669C - Open-circuit protector for security unit - Google Patents
Open-circuit protector for security unit Download PDFInfo
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- CN100440669C CN100440669C CNB2004100183808A CN200410018380A CN100440669C CN 100440669 C CN100440669 C CN 100440669C CN B2004100183808 A CNB2004100183808 A CN B2004100183808A CN 200410018380 A CN200410018380 A CN 200410018380A CN 100440669 C CN100440669 C CN 100440669C
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- overvoltage
- open
- input
- security unit
- protecting device
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Abstract
The present invention relates to an open-circuit protector for security units, which is composed of an offline input end, an overvoltage protective input end, an overcurrent protective input end, an elastic reed and a supporting rack, wherein the elastic reed is provided with a fixed end and a movable end; the fixed end is fixed on the supporting rack, and the movable end is connected with the offline input end and the overvoltage protective input end by soldering tin, and is also electrically connected with the overcurrent protective input end; the supporting rack formed by a printed circuit board or by the combination of a plastic member and a metal member; a discharge pipe and a positive temperature coefficient thermistor or an overvoltage and overcurrent protective integrated circuit are arranged in the supporting rack. When overvoltage and overcurrent events occur, the discharge heat of the discharge pipe or the overvoltage and overcurrent protective integrated circuit is used for making soldering tin for connecting the elastic reed melt; the elastic reed is separated from the offline input end and the overvoltage protective input end for realizing an open circuit of the offline input end. The present invention has the advantages of simple structure, high reliability and strong adaptability to security units with various structures.
Description
Technical field:
The present invention relates to electricity field; relate in particular to essential electronic element; be particularly related to the overvoltage overcurrent protective device in the telephone communication circuit; be specifically related to the overvoltage overcurrent protective device that the main frame Security Unit in the telephone communication circuit is used, concrete is a kind of open-circuit protecting device that is used for Security Unit.
Background technology:
In the prior art, the Security Unit in the communication line mainly contains four classes, and wherein the first kind is a plain edition incoming line shorted to earth formula structure; Second class is that bimetal leaf is from recovery type incoming line shorted to earth formula structure; The 3rd class is a plain edition incoming line open type structure, has wherein comprised modes such as fusible link, printed circuit board (PCB) again, and the 4th class is manually to recover type incoming line open type structure or open circuit reed mode.All there are many limitations in the Security Unit of described this four class formation when practical application, be in particular in following several aspect:
The Security Unit of plain edition incoming line shorted to earth formula structure when using in unattended access site, run into big electric current and can cause a large amount of heats, and unattended situation can't guarantee in-situ processing timely that hard fire is to avoid.
Bimetal leaf is from the Security Unit of recovery type incoming line shorted to earth formula structure; because of the state after the bimetal leaf action need maintain on the higher temperature; and after in fact FS moves; discharge tube stops discharge; bimetal leaf can't obtain heat and keep higher temperature from discharge tube again; so bimetal leaf automatically resets again; produce vibration so repeatedly; cause communication line can't operate as normal and Security Unit in the premature failure of protection device; go into the scope that the big electric current in ground can bear greater than telecommunication cable simultaneously, therefore the danger of fire arranged equally.
The Security Unit of plain edition incoming line open type structure, wherein alarm is finished by two cover independent components with open circuit, but because outside line and power line touch some the randomness apart from the distance of equipment, the size that has determined to produce on the line overcurrent is indefinite, and the length of open circuit element operate time directly depends on the size of the electric current of flowing through, so outputting alarm in the time of can't guaranteeing to open a way, owing to can not in time carry out the fault prompting, be unfavorable for the unimpeded of communication line, also exist the attendant simultaneously by the danger of outer line end suspension high voltage injury.
The Security Unit of manual recovery type incoming line open type structure, the problem of outputting alarm when having solved open circuit, but must increase action reset mechanism in the unit, complex structure is low to the Security Unit adaptive capacity of different structure, especially when the generation power line touches, the big electric current open circuit reed elastic arm of flowing through, exist the open circuit reed because of overheated elastic loss may, and can produce arcing during the open circuit action, contact performance deterioration after resetting causes the unit reliability to reduce.
Summary of the invention:
Technical problem of the prior art to be solved by this invention is: there are many limitations respectively in the structure that four classes of widespread usage are used for the Security Unit of communication line in the prior art, when wherein the Security Unit of plain edition incoming line shorted to earth formula structure is used in unattended access site, run into big electric current and can cause a large amount of heats, and unattended situation can't guarantee in-situ processing timely, and hard fire is to avoid; Wherein the state of bimetal leaf after the Security Unit of recovery type incoming line shorted to earth formula structure moves because of bimetal leaf need maintain on the higher temperature, and after in fact FS moves, discharge tube stops discharge, bimetal leaf can't obtain heat and keep higher temperature from discharge tube again, so bimetal leaf automatically resets again, produce vibration so repeatedly, cause communication line can't operate as normal and Security Unit in the premature failure of protection device, go into the scope that the big electric current in ground can bear greater than telecommunication cable simultaneously, therefore the danger of fire arranged equally; Wherein the alarm of the Security Unit of plain edition incoming line open type structure is finished by two cover independent components with open circuit, but because outside line and power line touch some the randomness apart from the distance of equipment, the size that has determined to produce on the line overcurrent is indefinite, and the length of open circuit element operate time directly depends on the size of the electric current of flowing through, so outputting alarm in the time of can't guaranteeing to open a way, owing to can not in time carry out the fault prompting, be unfavorable for the unimpeded of communication line, also exist the attendant simultaneously by the danger of outer line end suspension high voltage injury; Wherein must increase action reset mechanism in the Security Unit of manually recovery type incoming line open type structure, complex structure, Security Unit adaptive capacity to different structure is low, especially when the generation power line touches, the big electric current open circuit reed elastic arm of flowing through, exist the open circuit reed because of overheated elastic loss may, and can produce arcing during the open circuit action, contact performance deterioration after resetting causes the unit reliability to reduce.
The technical scheme that the present invention is adopted for solution above-mentioned technical problem of the prior art provides a kind of open-circuit protecting device that is used for Security Unit; the described this open-circuit protecting device of Security Unit that is used for is by at least one outside line input; at least one overvoltage protection input; at least one over-current protection input; at least one elastic spring and at least one bracing frame constitute; wherein; described outside line input and overvoltage protection input all are arranged on the described bracing frame; described elastic spring has a stiff end and a movable end; described stiff end is fixedly installed on the described bracing frame; described movable end contacts simultaneously with the overvoltage protection input with described outside line input and is connected, and described elastic spring and described over-current protection input are electrically connected.
Further, described bracing frame is made of printed circuit board (PCB), described outside line input is made of one first copper film electrode, described overvoltage protection input is made of one second copper film electrode, described first copper film electrode and the described second copper film electrode all are arranged on the surface of described printed circuit board (PCB), the stiff end of described elastic spring is fixedly installed on the described printed circuit board (PCB), and the movable end of described elastic spring contacts simultaneously by scolding tin with the second copper film electrode with the described first copper film electrode and is connected.
Further, described over-current protection input is made of the stiff end of described elastic spring.
Further, contact is connected with a discharge tube on the described overvoltage protection input, and described discharge tube is arranged on the described bracing frame, and described over-current protection input is connected with a semistor.Concrete, the other end of described semistor is connected with an interior lines input.
Perhaps; described bracing frame is provided with an overvoltage overcurrent protection integrated circuit; described overvoltage overcurrent protection integrated circuit has an overvoltage protection wiring pin and a radiating surface at least; described overvoltage protection wiring pin and described overvoltage protection input are electrically connected; described radiating surface is connected with described overvoltage protection input contact, and an end of a described over-current protection input and a sample resistance is electrically connected.Concrete, described overvoltage overcurrent protection integrated circuit has a pin to be connected with the other end of sample resistance again, is connected with an interior lines input again simultaneously.
Further, an end ground connection of described discharge tube connects.Further, an end that is connected with ground of described discharge tube is connected with a temperature detect switch (TDS), and the other end of described temperature detect switch (TDS) is connected with a FS signal output part.
Further, described overvoltage overcurrent protection integrated circuit has a grounding pin at least, and described grounding pin ground connection connects.Further, the grounding pin of described overvoltage overcurrent protection integrated circuit is connected with a temperature detect switch (TDS), and the other end of described temperature detect switch (TDS) is connected with a FS signal output part.
Further; discharge tube described in the present invention, semistor, overvoltage overcurrent protection integrated circuit, temperature detect switch (TDS) and elastic spring all adopt known technology of the prior art; about discharge tube, semistor, overvoltage overcurrent protection integrated circuit, temperature detect switch (TDS) and elastic spring known technology in the prior art have been well known to those of ordinary skill in the art, so do not repeat them here.
Operation principle of the present invention is: the outside line input; the overvoltage protection input; over-current protection input and described elastic spring constitute hilted broadsword on-off switch structure; under the normal condition; elastic spring and outside line input; the overvoltage protection input keeps in touch; when overvoltage overcurrent incident takes place; utilize the discharge heat of discharge tube or overvoltage overcurrent protection integrated circuit that elastic spring is separated with the overvoltage protection input with the outside line input; realize outside line input open circuit; concrete; utilize the discharge heat of discharge tube or overvoltage overcurrent protection integrated circuit to make the melts soldering tin that connects elastic spring, elastic spring is realized separating under elastic reaction.
The present invention and prior art contrast, and effect is positive and tangible.When the present invention works, the big electric current tie point of only flowing through, and do not pass through elastic spring, do not exist elastic spring because of the overheated possibility that causes elastic loss, in addition, outside line input open circuit and implement the alarm action can collaborative work, the reliability height, the present invention realizes simply the different structure Security Unit being had stronger adaptive capacity.
Description of drawings:
Fig. 1 is the circuit function structural representation of first embodiment of a kind of open-circuit protecting device that is used for Security Unit of the present invention.
Fig. 2 is the circuit function structural representation of second embodiment of a kind of open-circuit protecting device that is used for Security Unit of the present invention.
Fig. 3 is the forward structure schematic diagram of first preferred embodiment of a kind of open-circuit protecting device that is used for Security Unit of the present invention.
Fig. 4 is the side direction structural representation of first preferred embodiment of a kind of open-circuit protecting device that is used for Security Unit of the present invention.
Embodiment:
As shown in Figure 1; a kind of open-circuit protecting device that is used for Security Unit of the present invention; by at least one outside line input 1; at least one overvoltage protection input 2; at least one over-current protection input 3; at least one elastic spring 4 and at least one bracing frame 7 constitute; wherein; described outside line input 1 and overvoltage protection input 2 all are arranged on the described bracing frame 7; described elastic spring 4 has a stiff end and a movable end; described stiff end is fixedly installed on the described bracing frame 7; described movable end contacts simultaneously with overvoltage protection input 2 with described outside line input 1 and is connected, and described elastic spring 4 is electrically connected with described over-current protection input 3.
In embodiments of the invention shown in Figure 1, contact is connected with a discharge tube 6 on the described overvoltage protection input 2, described discharge tube 6 is arranged on the described bracing frame 7, and described over-current protection input 3 is connected with a semistor 5.Concrete, the other end of described semistor 5 is connected with an interior lines input.
Further, an end ground connection of described discharge tube 6 connects.Further, an end that is connected with ground of described discharge tube 6 is connected with a temperature detect switch (TDS), and the other end of described temperature detect switch (TDS) is connected with a FS signal output part.
As shown in Figure 3 and Figure 4, in embodiments of the invention shown in Figure 1, bracing frame 7 is made of printed circuit board (PCB), described outside line input 1 is made of one first copper film electrode, described overvoltage protection input 2 is made of one second copper film electrode, described first copper film electrode and the described second copper film electrode all are arranged on the surface of described printed circuit board (PCB), the stiff end of described elastic spring 4 is fixedly installed on the described printed circuit board (PCB), and the movable end of described elastic spring contacts simultaneously by scolding tin with the second copper film electrode with the described first copper film electrode and is connected.
Further, described over-current protection input 3 is made of the stiff end of described elastic spring 4.
In embodiments of the invention shown in Figure 2; described bracing frame 7 is provided with an overvoltage overcurrent protection integrated circuit 8; described overvoltage overcurrent protection integrated circuit 8 has an overvoltage protection wiring pin and a radiating surface at least; described overvoltage protection wiring pin and described overvoltage protection input 2 are electrically connected; described radiating surface is connected with described overvoltage protection input 2 contacts; one end of a described over-current protection input 3 and a sample resistance is electrically connected; simultaneously; described overvoltage overcurrent protection integrated circuit 8 has a pin to be connected with the other end of described sample resistance again, and is connected with an interior lines input simultaneously.
Described overvoltage overcurrent protection integrated circuit 8 has a grounding pin at least, and described grounding pin ground connection connects.Further, the grounding pin of described overvoltage overcurrent protection integrated circuit 8 is connected with a temperature detect switch (TDS), and the other end of described temperature detect switch (TDS) is connected with a FS signal output part.
In embodiments of the invention illustrated in figures 1 and 2, on two tie-in lines of communication conductor, be respectively arranged with an open-circuit protecting device that is used for Security Unit of the present invention.
Claims (8)
1; a kind of open-circuit protecting device that is used for Security Unit; by at least one outside line input; at least one overvoltage protection input; at least one over-current protection input; at least one elastic spring and at least one bracing frame constitute; it is characterized in that: described outside line input and overvoltage protection input all are arranged on the described bracing frame; described elastic spring has a stiff end and a movable end; described stiff end is fixedly installed on the described bracing frame; described movable end contacts simultaneously with the overvoltage protection input with described outside line input and is connected, and described elastic spring and described over-current protection input are electrically connected.
2; the open-circuit protecting device that is used for Security Unit as claimed in claim 1; it is characterized in that: described bracing frame is made of printed circuit board (PCB); described outside line input is made of one first copper film electrode; described overvoltage protection input is made of one second copper film electrode; described first copper film electrode and the described second copper film electrode all are arranged on the surface of described printed circuit board (PCB); the stiff end of described elastic spring is fixedly installed on the described printed circuit board (PCB), and the movable end of described elastic spring contacts simultaneously by scolding tin with the second copper film electrode with the described first copper film electrode and is connected.
3; the open-circuit protecting device that is used for Security Unit as claimed in claim 1; it is characterized in that: contact is connected with a discharge tube on the described overvoltage protection input; described discharge tube is arranged on the described bracing frame, and described over-current protection input is connected with a semistor.
4; the open-circuit protecting device that is used for Security Unit as claimed in claim 1; it is characterized in that: described bracing frame is provided with an overvoltage overcurrent protection integrated circuit; described overvoltage overcurrent protection integrated circuit has an overvoltage protection wiring pin and a radiating surface at least; described overvoltage protection wiring pin and described overvoltage protection input are electrically connected, and described radiating surface is connected with described overvoltage protection input contact.
5, the open-circuit protecting device that is used for Security Unit as claimed in claim 3 is characterized in that: an end ground connection of described discharge tube connects.
6, the open-circuit protecting device that is used for Security Unit as claimed in claim 4 is characterized in that: described overvoltage overcurrent protection integrated circuit has a grounding pin at least, and described grounding pin ground connection connects.
7, the open-circuit protecting device that is used for Security Unit as claim 5 is stated is characterized in that: an end that is connected with ground of described discharge tube is connected with a temperature detect switch (TDS).
8, the open-circuit protecting device that is used for Security Unit as claimed in claim 6 is characterized in that: the grounding pin of described overvoltage overcurrent protection integrated circuit is connected with a temperature detect switch (TDS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100183808A CN100440669C (en) | 2004-05-17 | 2004-05-17 | Open-circuit protector for security unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100183808A CN100440669C (en) | 2004-05-17 | 2004-05-17 | Open-circuit protector for security unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1700549A CN1700549A (en) | 2005-11-23 |
| CN100440669C true CN100440669C (en) | 2008-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100183808A Expired - Fee Related CN100440669C (en) | 2004-05-17 | 2004-05-17 | Open-circuit protector for security unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100440669C (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048237U (en) * | 1989-04-21 | 1989-11-22 | 广州市荔湾区工业公司新产品研究所 | Temp. controlled electrical switch |
| CN2071854U (en) * | 1990-04-25 | 1991-02-20 | 宁波市镇海有线设备厂 | Thermal open-circuit type thermistor safety unit |
| CN2147702Y (en) * | 1993-02-18 | 1993-11-24 | 黄福庭 | Protector for general line distributing |
| CN2233636Y (en) * | 1995-05-02 | 1996-08-21 | 福建省晋江市科龙通讯设备有限公司 | Protecting unit |
| CN2283334Y (en) * | 1995-01-17 | 1998-06-03 | 邮电部景德镇通信设备厂 | Safety device |
| CN2540675Y (en) * | 2002-04-28 | 2003-03-19 | 叶其藻 | Spark transfering device capable of automatic restoring open-circuit protection safety unit |
| CN2580651Y (en) * | 2002-10-31 | 2003-10-15 | 苏州维运科技有限公司 | Solid circuit protection unit for main distributing frame |
| CN2610495Y (en) * | 2003-04-18 | 2004-04-07 | 叶其藻 | Open-circuit device for integrated circuit safety unit |
| CN2713708Y (en) * | 2004-05-17 | 2005-07-27 | 上海凯青通信配件有限公司 | Open loop protection device for safety unit |
-
2004
- 2004-05-17 CN CNB2004100183808A patent/CN100440669C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048237U (en) * | 1989-04-21 | 1989-11-22 | 广州市荔湾区工业公司新产品研究所 | Temp. controlled electrical switch |
| CN2071854U (en) * | 1990-04-25 | 1991-02-20 | 宁波市镇海有线设备厂 | Thermal open-circuit type thermistor safety unit |
| CN2147702Y (en) * | 1993-02-18 | 1993-11-24 | 黄福庭 | Protector for general line distributing |
| CN2283334Y (en) * | 1995-01-17 | 1998-06-03 | 邮电部景德镇通信设备厂 | Safety device |
| CN2233636Y (en) * | 1995-05-02 | 1996-08-21 | 福建省晋江市科龙通讯设备有限公司 | Protecting unit |
| CN2540675Y (en) * | 2002-04-28 | 2003-03-19 | 叶其藻 | Spark transfering device capable of automatic restoring open-circuit protection safety unit |
| CN2580651Y (en) * | 2002-10-31 | 2003-10-15 | 苏州维运科技有限公司 | Solid circuit protection unit for main distributing frame |
| CN2610495Y (en) * | 2003-04-18 | 2004-04-07 | 叶其藻 | Open-circuit device for integrated circuit safety unit |
| CN2713708Y (en) * | 2004-05-17 | 2005-07-27 | 上海凯青通信配件有限公司 | Open loop protection device for safety unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1700549A (en) | 2005-11-23 |
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Effective date of registration: 20090213 Address after: Room 11, No. 522, Lane 202, Xin Min Road, Shanghai, Minhang District Patentee after: Xu Jiachang Address before: No. 24 Xin Min Road, Shanghai, Minhang District Patentee before: Kaiqing Communications Accessory Co., Ltd., Shanghai |
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Owner name: XU JIACHANG Free format text: FORMER OWNER: SHANGHAI KAIQING COMMUNICATION ACCESSORIES CO., LTD. Effective date: 20090213 |
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Owner name: LIU GUIZHI Free format text: FORMER OWNER: XU JIACHANG Effective date: 20100222 |
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Free format text: CORRECT: ADDRESS; FROM: 200240 ROOM 202, NO.11, LANE 522, XINMIN ROAD, MINHANG DISTRICT, SHANGHAI CITY TO: 201210 ROOM 301, NO.77, ZHANGJIANG YIFENG NEW VILLAGE, PUDONG NEW DISTRICT, SHANGHAI CITY |
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Effective date of registration: 20100222 Address after: 201210 Shanghai City, Pudong New Area Zhangjiang Yifeng Village No. 77 Room 301 Patentee after: Liu Guizhi Address before: 200240, room 11, No. 522, Lane 202, Xin Min Road, Shanghai, Minhang District Patentee before: Xu Jiachang |
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Owner name: SHANGHAI SINO-IC MICROELECTRONICS CO., LTD. Free format text: FORMER OWNER: LIU GUIZHI Effective date: 20101112 |
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Free format text: CORRECT: ADDRESS; FROM: 201210 ROOM 301, NO.77, YIFENG NEW VILLAGE, ZHANGJIANG, PUDONG NEW DISTRICT, SHANGHAI TO: 201203 ROOM 3401-03, BUILDING 3, NO.200, ZHANGHENG ROAD, HIGH TECHNOLOGY PARK, ZHANGJIANG, PUDONG NEW DISTRICT, SHANGHAI |
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Effective date of registration: 20101112 Address after: 201203 Shanghai Zhangjiang High Tech Park of Pudong New Area Zhang Henglu No. 200 Building No. 3 room 3401-03 Patentee after: Shanghai Sino-IC Microelectronics Co., Ltd. Address before: 201210 Shanghai City, Pudong New Area Zhangjiang Yifeng Village No. 77 Room 301 Patentee before: Liu Guizhi |
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Granted publication date: 20081203 Termination date: 20140517 |