CN2039066U

CN2039066U - Protector and alarm for limiting excess current or voltage

Info

Publication number: CN2039066U
Application number: CN 88211826
Authority: CN
Inventors: 陈玫; 单让
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-05-28
Filing date: 1988-05-28
Publication date: 1989-06-07

Abstract

The utility model discloses a protector and alarm for limiting excess current or voltage belonging to the improvement of the protecting unit used on the total conductor configuration frame of the telephone exchanger; concretely speaking, and the existing electric discharge tube-hotline rolled protecting unit is added with a heat control component. The utility model has double protection and double alarm, the protector and alarm for limiting excess current or voltage can overcome the defects of the existing protecting unit that when the lightening strike lasts long or the existing protecting unit is contacted with the 220 volt commercial power, the electric discharge tube is burnt or the plastic housing is deformed or burnt, and the fire can be caused.

Description

Protector and alarm for limiting excess current or voltage

The utility model relates to a kind of improvement that is used for the security personnel's device on the telephone exchange main frame, specifically, is a kind of Security Unit with high pressure, the two security personnel of overcurrent, two alarms.

Protector on the telephone exchange main frame is used for security personnel's such as lightning protection, anti-high voltage and overcurrent usefulness, and it is formed by seat board with the suitable Security Unit of telephone door number.At present used Security Unit mainly is made up of discharge tube and heat coil, and corresponding to the turnover line both sides of phone loop line, has symmetrical safety structure of l.Existing protector has security personnel to act on for thunderbolt, but can not alarm, and, in case with telephone office outside the high voltage that imports of telephone wire or civil power when contacting lastingly, the discharge tube in the Security Unit will be burnt out or the plastic casing distortion, burn even the security personnel of losing on fire effect.

The purpose of this utility model provides a kind ofly can have reliable safety performance and the Security Unit that can alarm to thunderbolt, high voltage, overcurrent.

Cut open the defective place of tearing existing Security Unit open, provide technical solution of the present utility model.

Existing Security Unit, the discharge tube cross-over connection is on the phone loop line outside the intra-office between attachment plug and the ground wire, heat coil then is serially connected with between the intra-office outside line, like this, in a single day high voltage or civil power touch telephone wire not in the know, are just discharged by discharge tube, and heat coil is to work to cut off the phone loop line, have only the line loop of working as to make moist, the occasion of overcurrent load is introduced in short circuit or outside line, and heat coil just works.Therefore, the utility model is made the occasion at high pressure as long as existing Security Unit improves, and also can cause alarm during the discharge tube discharge and cut off the telephone wire loop.Consider compatibility, the utility model improves its internal structure under the prerequisite of the physical dimension, external structure and the technical indicator that keep existing Security Unit, increases the thermal control product.The heat that produces when utilizing the discharge tube discharge causes the action of thermal control product, realizes overcurrent, high voltage alarm and security personnel.Be that the utility model comprises outside existing plastic seat shell, cover plate, turnover line jack, combined plug, indicating arm, spring, discharge tube, heat coil, collets, signal reed, grounding reed and the insulating trip, also between discharge tube and heat coil, increase the thermal control product.Like this, when line loop had charged current, heat coil heating caused the action of thermal control product, and under the effect of spring, and the thermal control product makes outside line ground connection and connection signal line and alarms; The another dawn is as lasting thunderbolt or touch 220 volts of civil powers, when high pressure enters discharge tube certain time (continuing more than 5 seconds for 2.5 amperes as discharging current), the thermal control product action of being heated, and under spring action makes outside line ground connection and connection signal line too and alarms.

Advantage of the present utility model be to ensure public security dependable performance and comprehensively, and alarm signal can be provided again fast, be convenient to the attendant and determine rapidly to keep in repair trouble location; Simple in structure, be easy to produce.

The utility model is implemented by the following drawings.

Fig. 1 is the combined hot control piece structural representation that the utility model is controlled respectively overcurrent, high pressure.

Fig. 2 is that the utility model has the two security personnel that make up the thermal control product, the structural representation of two alarms.

Fig. 3,4 is respectively two security personnel of the utility model list thermal control product, the structural representation of two alarms.

Fig. 5, Fig. 6 and Fig. 7 are respectively the utility model two security personnel, two alarms, have the structural representation that can cut off outside line.

Provide embodiment of the present utility model with reference to the accompanying drawings,, further provide ins and outs of the present utility model by elaboration to embodiment.

Example 1, provide the two security personnel that the utlity model has combination thermal control product, the Security Unit of two alarms according to Fig. 1～2.The thermal control product is made up of drawing pin shape metal roof pole 15 and metal bobbin 13, and bobbin 13 plays the control overcurrent, and metal roof pole 15 is used for controlling high pressure and civil power touches accident.Acolite sheet 14 is high pressure accident signs, and the top end face diameter of metal bobbin 13 is greater than pipe diameter, and it is through in the central shaft of heat coil 12, and welds coil 12 and bobbin 13 with eutectic scolding tin.There is suitable distance the top end face of bobbin 13 and coil 12 tops.Metal roof pole 15 passes that acolite sheet 14 back is inserted among the metal bobbins 13, acolite sheet 14 is supported by metal bobbin 13.And discharge tube 16 presses the dome of metal roof pole 15.Like this, when having served as stream load, heat coil 12 heating, it and the melts soldering tin of 13 in metal bobbin, metal bobbin 13 reed 11 and ensuring public security be shifted connection under the effect of spring 18, and connection signal reed 9 and alarming subsequently again; When 220 volts of civil powers are touched in lasting thunderbolt or outside line, because of discharge tube 16 heatings make low fusing, make under the promotion of spring 18, after grounding reeds 11 are connected in 15 displacements of metal roof pole, connection signal reed 9 again and then, be about to high pressure be inducted into and alarm.From Fig. 2 as seen, the utility model comprises cover plate 1, seat shell 2, inlet wire jack 3,4, goes out line jack 5,6, plug 7, holding wire combination plug 8, the signal reed 9 that is communicated with plug 8, insulating trip 10, the grounding reed 11 that is communicated with plug 7, hot line Quan 12, put discharge tube 16, indicating arm 17, spring 18 and coil holder 19, and combination thermal control product that constitutes by metal bobbin 13 and metal roof pole 15 and the acolite 14 that indicates the high pressure accident.

Example 2, constitute two security personnel of single thermal control product of the present utility model, the Security Unit of two alarms according to Fig. 3.Visible thermal control product is a drawing pin shape metal roof pole 15 from Fig. 3.The difference that is this example and example 1 is: (1) acolite sheet 14 is contained between discharge tube 16 and the spring 18 rather than is enclosed within on the metal roof pole 15; (2) save metal bobbin 13 in the example 1.In other words the thermal control product is only served as by the drawing pin shape metal roof pole 15 in the example 1, and it is through the central shaft of hot line Quan 12, and with eutectic scolding tin it and hot line Quan 12 is welded.

Example 3, constitute the utility model according to Fig. 4 and do not have two security personnel of high pressure accident sign, the Security Unit of two alarms.The difference of it and example 1 is to save acolite sheet 14 and metal bobbin 13, and drawing pin shape metal roof pole 15 is through in the central shaft of hot line Quan 12, and with eutectic scolding tin it and hot line Quan 12 welding.Because there is not acolite sheet 14, so, can not judge that the high pressure accident still is the overcurrent accident from Security Unit, advantage is simple in structure.

Example 4, constitute the embodiment that the utlity model has two security personnel, two alarm and can cut off the Security Unit that internal and external line connects according to Fig. 5～7, they are with the difference of example 1, example 2 and example 3 respectively: dome one side of (1) drawing pin shape metal roof pole 15 is extended a tongue piece 20; (2) inlet wire jack 3,4 is equipped with tongue 21 respectively.Tongue piece 20 is clamped in the tongue 21.Obviously, when drawing pin type spare 15 moved, tongue piece 20 separated with tongue 21, thereby cut off the connection of Security Unit and outside line.

Claims

1, the Security Unit of a kind of high pressure, overcurrent security personnel and alarm, be used in particular for telephone exchange main frame protector, comprise cover plate 1, drain pan 2, entrance hole 3,4, wire hole 5,6, ground wire combined plug 7, the full plug 8 of signal line group, signal reed 9, grounding reed 11, insulating trip 10, heat coil 12, discharge tube 16, indicating arm 17, spring 18 and ground coil holder 19, it is characterized in that also having thermal control product and acolite sheet 14; The thermal control product is rolled up 12 soldering connections with hot line respectively and is contacted with discharge tube.

2,, it is characterized in that said thermal control product is a drawing pin shape metal roof pole 15 or is made of drawing pin shape metal roof pole 15 and metal bobbin 13 according to the described Security Unit of claim 1.

3, according to claim 1 or 2 described Security Units, it is characterized in that a side of the dome of drawing pin shape metal roof pole 15 has tongue piece 20, an entrance hole 3,4 that extends that corresponding tongue 21 is arranged respectively, tongue piece 20 is clamped in the tongue 21.