CN2154574Y - Protective device pattern plate - Google Patents
Protective device pattern plate Download PDFInfo
- Publication number
- CN2154574Y CN2154574Y CN 93212005 CN93212005U CN2154574Y CN 2154574 Y CN2154574 Y CN 2154574Y CN 93212005 CN93212005 CN 93212005 CN 93212005 U CN93212005 U CN 93212005U CN 2154574 Y CN2154574 Y CN 2154574Y
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- Prior art keywords
- protector module
- utility
- model
- utmost point
- module according
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Abstract
The utility model discloses a protective device module, which comprises a module body (1), an upper cover (2), a base (3), a plurality of terminals, and an inner component containing protective elements. The utility model is characterized in that the inner component comprises a triple pole gas-filled discharge tube (13) used for over-voltage protection and ceramic thermistors (16, 20) used for over-current protection. A light emitting diode is used for indicating the operating state of the protective elements. The utility model has the advantages of compact structure and good protective performance. The utility model is an excellent protective device used for a program-control exchanger.
Description
The utility model relates to a kind of device to over-voltage over-current protection, particularly relates to a kind ofly being used to protect stored-program control exchange to avoid that forceful electric power is pressed, the protector module of current affects.
Along with development of Communication Technique, stored-program control exchange widely countries in the world adopts, owing to adopted a large amount of semiconductor integrated circuit in this switch, and these large scale integrated circuits are subjected to make damage from the thunderbolt of circuit or high voltage induction electric current easily.Therefore, the security protection for the switch of costliness becomes even more important.In order to ensure stored-program control exchange be unlikely because of the thunderbolt or the high voltage induction electric current damaged, all be to have adopted the protection component of two utmost point gas-discharge tubes as its protector unit in the past, but, because this protection component is on the function of overvoltage protection, normal asynchronous because of discharge voltage between two circuits, existence is to the uncertainty of overvoltage protection; And overcurrent protection is adopted heat coil or fuse, but because its delay of response, protective value is poor, and can't provide good safeguard protection to switch device.
One of the purpose of this utility model is to adopt two utmost point gas-discharge tubes to make the nonsynchronous shortcoming of discharge voltage between two circuits as its protection component in order to overcome protector; protector module of the present utility model has adopted three advanced utmost point gas-discharge tubes as its over-voltage protection element, makes it provide circuit with circuit with reach good voltage limit between circuit and the ground effectively.
Second purpose of the present utility model be ceramic thermal resistance by adopting positive temperature coefficient as its overflow protecting element, overcurrent protection function safely and effectively is provided.
The 3rd purpose of the present utility model is by adopting the light-emitting diode of high brightness low power consumption, a kind of protector operating state Presentation Function being provided, to be convenient to maintenance.
The 4th purpose of the present utility model is by rational design, makes this protector module can place half to insert state easily, with protection constructor's safety.
The 5th purpose of the present utility model is by rational design, and a kind of compact conformation, safe and reliable protector module are provided.
More above-mentioned purposes of the present utility model are to finish by following technical measures.The utility model provides a kind of protector module, and peace comprises protector module bodies, loam cake, base, a plurality of terminals and the inner assembly that includes protection component are formed, it is characterized in that described inner assembly comprises one three utmost point gas-discharge tube, is used for the protection to overvoltage; Two ceramic thermal resistances; Be used for protection to overcurrent; A light-emitting diode is used to indicate the operating state of protective circuit, and low melting point tin sheet (or fuse piece) is used for making this fuse piece fusing when having forceful electric power to press, and changes metal clips and the relative position of alarming between reed and three utmost point gas-discharge tube electrodes; The thermistor support is used to have the pressured support thermistor in elastic force ground, makes thermistor and metal clips that excellent contact be arranged, and makes whole protector modular structure compactness.
Protector module of the present utility model not only has good overvoltage and overcurrent protection performance, and volume is little, compact conformation, element fixation, reliability advantages of higher.
Below by in conjunction with the accompanying drawings to the detailed description of the utility model embodiment, will be to the clearer understanding of this utility model.
Fig. 1 is the profile schematic diagram of an embodiment of the present utility model.
Fig. 2 is the electrical schematic diagram of an embodiment of the present utility model.
Fig. 3 is the protector block configuration schematic diagram of an embodiment of the present utility model.
Referring to Fig. 1, protector module of the present utility model comprises protector module bodies 1, loam cake 2, base 3, inner assembly and a plurality of terminal (7,17,8,9,14,10).Held be connected with the relevant portion of described inner assembly respectively (back detailed description) for wherein above-mentioned 6.The top of main body 1 has " I " font structure, is convenient to the attendant and fetches conveniently.Main body 1, loam cake 2, base 3 are made by plastic material, and this material meets U.S. UL-94V0 standard, has good flameproof effect.Adopt between them recessed and protruding between clamping.
Fig. 2 is the electrical schematic diagram of an embodiment of the present utility model.T wherein, the outside line of R side joint, T
1, R
1The side joint switch, when from T, when the R side has high pressure to come in, the voltage at C point and D point place is increased, because voltage increases, make the discharge of three utmost point gas-discharge tubes, voltage is dropped to rapidly below 35 volts, perhaps owing to continue discharge, the heat that produces causes the fusing of low temperature fuse piece, make C, the D point communicates with the G point, promptly is equivalent to K
1, K
2Closure, external high pressure is grounded short circuit, stops high pressure to enter switch on the one hand, prevents the damage of the electronic equipment of electron exchanger, can prevent from the other hand to produce high heat breaking out of fire because of discharge tube continuous discharge.Simultaneously, because the fusing of above-mentioned fuse piece is used in the protector indicating operating status, and the light-emitting diode (E) that is connected to negative supply obtains the loop to ground, is equivalent to the K among the figure
3Closure makes light-emitting diode shinny, and the fuse piece that indicates in the protector module is melted, is convenient to the attendant and safeguards, changes the protector module.If from outside line is a kind of heavy current, then can pass through ceramic thermal resistance PTCR because of electric current
1, PTCR
2And make its heating, and heat produces when reaching the Curie temperature of thermistor, this thermosensitive resistance increases rapidly, is high-impedance state, and the electric current that outside line is come can not enter switch, reaches the purpose of overcurrent protection.
Fig. 3 is the schematic diagram of the block configuration of an embodiment of the present utility model.This Fig. 3 is the schematic diagram that the described the utility model outline drawing of Fig. 1 is removed this block configuration of seeing after the loam cake.Wherein the first terminal 7 joins with an end of metal clips 18 and ceramic thermal resistance 6.Second terminal 17 connects with light-emitting diode 16 by line 26.The 3rd terminal 18 is similar with the first terminal 7, is connected with metal clips 19 and ceramic thermal resistance 20.The 4th terminal 9 and the 6th terminal 10 are connected with the support 4,5 of pressured ceramic thermal resistance 6,20 respectively.Wherein first, second and third, five terminal is long pin, first and third terminal 7,8 connects outside line, the 4th, six terminals 9,10 connect switch.Five terminal 14 is earth rods, the middle body of three utmost point gas-discharge tubes 13 is positioned on this earth rod, the central part of earth rod, a cutting breach is arranged, the middle body that is used for fixing three utmost point gas-discharge tubes 13, make both no matter under any state, all can remain on this position, not reason position deviation and produce unnecessary fault.Two terminals 24,25 in addition of three utmost point gas-discharge tubes 13 contact with low temperature fuse piece 11,12 respectively, and two terminals 24,25 of these two fuse pieces 11,12 and three utmost point gas-discharge tubes 13 are closely clamped by the elastic force of metal clips 19,18 and are pressed against together.When can make 13 discharges of three utmost point gas-discharge tubes owing to external voltage, the heat that produces makes fuse piece 11, during 12 fusings, metal clips 19,18 with regard to two terminals 24 with three utmost point gas- discharge tubes 13,25 press nearer, metal clips 19,18 is contacted with alarm reed 15, and contact with the earth polar of three utmost point gas-discharge tubes 13, promptly join with earth rod 14, the other end that makes light-emitting diode 16 is by alarm reed ground connection, and like this, the light-emitting diode 16 that is connected to negative supply will be luminous, demonstrate fuse piece and be melted, change by the attendant.Only need change fuse piece, easy to maintenance like this, and also cost is low.As mentioned above, because the fusing of fuse piece 11,12, cause first and third terminal 7,8 to be connected with earth rod, this is the elastic force that relies on metal clips 19,18, the fuse piece that melts is extruded realized.
In addition, if what come from outside line (i.e. first and third terminal 7,8) is heavy current, then this electric current is through ceramic thermal resistance 6; 20 o'clock; make this thermistor heating, because it is the resistance of positive temperature coefficient, and heat produces when reaching the Curie point of this thermistor; its resistance can increase sharply; be high-impedance state, make external heavy current can't enter the 4th, six terminals 9,10; make it produce damage, reached the purpose that switch is protected switch.
Should be understood that simultaneously, because in six above-mentioned terminals, except that five terminal 14 earth rods, all be riveted on the base 3, and alarm reed 15 is to fix on this main body 1 with screw 21 with corresponding metal sheet or support, light-emitting diode 16 is to be stuck on the main body 1 with pin 23, thermistor support 4,5 is the support with elastic pressure, therefore, whole inner assembly compact conformation, solid and reliable.
What should also be pointed out that especially is, when external cable is run into electric main, may cause low temperature fuse piece 11,12 fusings in the module, it is shinny to start light-emitting diode 16 alarms, module itself only needs to change fuse piece, both can recover its function easily, and need not bear any maintenance cost, so just reduce maintenance cost widely, can anti-thunderbolt hundreds of times of this module, and can connect use.
Those of ordinary skill in the art, basic design according to above-mentioned formation, can carry out various modifications, for example can be placed on two fuse pieces respectively in two metal caps that form by phosphor bronze die casting, as with three utmost point gas-discharge tubes about two terminals, entangle three utmost points inflations fulgurite as a kind of metallic sheath, be enclosed within after this pipe, and between the earth rod of centre, approximately leave the gap of 1 mm wide, its purpose is to prevent the gas-discharge tube short circuit.The characteristics of this structure are under the situation that does not influence three utmost point gas-discharge tube discharging functions fully, again can be high when hot because of continuous discharge produces at gas-discharge tube, fuse this low temperature fuse piece, the tin of fusion is flowed out by the space between metal cap and three utmost point gas-discharge tubes, impel the short circuit between metal bar and the metal cap, and discharge the work of gas-discharge tube.These modifications, also within the scope of the invention.
The major parameter of wherein said three utmost point gas-discharge tubes is that dc breakdown voltage is 216-264V; Impact flashover voltage≤750V; Insulation resistance＞1000M Ω; Interelectrode capacitance is not more than 3PF.Described thermistor characteristic: D.C. resistance is 15 ± 20 Ω; Be failure to actuate in safe current 110mA1 hour; Operating current; During electric current 750mA, operate time≤8 second; During electric current 1A, operate time＜1 second; During electric current 2A, operate time≤0.5 second.
Claims (6)
1, a kind of protector module, peace comprises protector module bodies (1), loam cake (2), base (3), a plurality of terminals (7,17,8,9,14,10) and the inner assembly that includes protection component form, it is characterized in that, the described inner assembly that includes protection component comprises one three utmost point gas-discharge tube (13), is used for the protection to overvoltage; Two ceramic thermal resistances (6,20) are used for the protection to overcurrent; A light-emitting diode (16) is used to indicate the operating state of protective circuit; Low melting fuse link (11,12), place metal clips (19,18) and the electrode (24 of three utmost point gas-discharge tubes, 25) and between alarm reed (15), be used for changing metal clips (19 according to input voltage discharge heat melts fuse piece, 18) with above-mentioned three utmost point gas-discharge tube (13) electrodes (24,25) and above-mentioned alarm reed between the position.
2, protector module according to claim 1; it is characterized in that; described light-emitting diode (16) links to each other with the alarm reed; when making above-mentioned fuse piece (11 owing to high pressure; when 12) melting; above-mentioned alarm reed (15) is connected ground connection with five terminal (14), makes diode shinny, is used to show the over-voltage protection element operating state.
3, protector module according to claim 1 is characterized in that, described metal clips (19,18) is to be pressed on the fuse piece (11,12) by elastic force.
4, protector module according to claim 1 is characterized in that, described ceramic thermal resistance (6,20) is to be lived by elastic force is pressured by its support (4,5).
5, protector module according to claim 1 is characterized in that, described a plurality of ends (7,8,9,10,17) be to be riveted together by base (3) and corresponding contact pin.
6, protector module according to claim 1 is characterized in that, a plurality of terminals of stating are 6 terminals more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212005 CN2154574Y (en) | 1993-05-10 | 1993-05-10 | Protective device pattern plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212005 CN2154574Y (en) | 1993-05-10 | 1993-05-10 | Protective device pattern plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2154574Y true CN2154574Y (en) | 1994-01-26 |
Family
ID=33793457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93212005 Expired - Fee Related CN2154574Y (en) | 1993-05-10 | 1993-05-10 | Protective device pattern plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2154574Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238620B (en) * | 2005-08-05 | 2012-08-08 | 3M创新有限公司 | An overvoltage protection module and an assembly of at least one telecommunications module and at least one overvoltage protection module |
-
1993
- 1993-05-10 CN CN 93212005 patent/CN2154574Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238620B (en) * | 2005-08-05 | 2012-08-08 | 3M创新有限公司 | An overvoltage protection module and an assembly of at least one telecommunications module and at least one overvoltage protection module |
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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 |