CN2515853Y

CN2515853Y - Safety unit for main distributing frame

Info

Publication number: CN2515853Y
Application number: CN 01264148
Authority: CN
Inventors: 王平; 刘自力; 李伟; 邱文
Original assignee: Shijiren Comm Equipment Co ltd
Current assignee: Shenzhen Century Man Communication Equipment Co Ltd
Priority date: 2001-09-30
Filing date: 2001-09-30
Publication date: 2002-10-09
Anticipated expiration: 2011-09-30

Abstract

The utility model relates to a protective unit used on a main distribution frame, comprising a shell, and an exterior wire contact piece, a jumping wire contact piece, a thermal resistor, a discharge lamp, a thermal synthesis switch, a signal wire and a caution light; wherein the discharge lamp is respectively connection with the thermal synthesis switch and the exterior wire contact piece; the exterior wire contact piece which is stiff and the cylinder surface contact points of the discharge lamp are positioned on a visible upper half-cylinder surface; thereby the discharge lamp is accurately positioned, good in contact and not easy to fall off.

Description

Be used for the Security Unit on the main frame

Technical field

The utility model relates to telecommunication apparatus, is specifically related to a kind of Security Unit that is used on the main frame.

Prior art

To be cable be connected and safeguard with distribution between telephony switching gear main frame, mainly form, can realize that the fixing of outside line contact chip cable, switchboard cable and wire jumper contact chip is connected with becoming end by frame safety wire connection row in upright arrangement, line test line bank, Security Unit, warning system, card line and testing tool etc.Wherein, Security Unit provides functions such as the protection of various overvoltage, overcurrent, fault alarm and test maintainings, it comprises housing and is installed on the interior outside line contact chip of housing, wire jumper contact chip, thermistor, discharge tube, heat seal switch, holding wire, warning lamp etc., discharge tube one end is connected with the heat seal switch, the other end is connected with the outside line contact chip, because discharge tube and outside line contact chip connected mode are improper, make that the location of discharge tube is not accurate enough, contact bad, and come off easily under external force, thereby influence the quality of Security Unit.

Summary of the invention

To be solved in the utility model is that the discharge tube location is inaccurate in the Security Unit, contacts technical problem bad and that come off easily.

In order to solve above technical problem, the technical solution adopted in the utility model is:

A kind of Security Unit that is used on the main frame, comprise housing and be installed on the interior outside line contact chip of housing, the wire jumper contact chip, thermistor, discharge tube, the heat seal switch, holding wire, the ground wire contact chip, warning lamp, connect thermistor between outside line contact chip and the wire jumper contact chip, the outside line contact chip is through discharge tube ground connection, the two ends of discharge tube also connect the heat seal switch, holding wire connects warning lamp and is connected with the ground wire contact chip through the heat seal switch, the heat seal switch flexibly connects sheet by three ends, easily frit and elastic support are formed, between the face of cylinder of three ends flexible connection sheet and discharge tube, be provided with easy frit, between three ends flexible connection sheet and housing, be provided with when easy frit melts, can make three ends that three ends flexibly connect sheet respectively with the two ends, the face of cylinder of discharge tube, the elastic support that one end of warning lamp joins, the earth connection contact chip connects three ends through easy frit and flexibly connects sheet, it is characterized in that described outside line contact chip is the contact chip with rigidity, the face of cylinder contact point of outside line contact chip and discharge tube is positioned on the visible upper semi-circle cylinder.

The bending of the oriented discharge tube direction of an end that described outside line contact chip contacts with the face of cylinder of discharge tube.

The end face of described outside line contact chip contacts with the face of cylinder of discharge tube.

Two contact points are arranged between the face of cylinder of described ground wire contact chip and discharge tube, two contact points lay respectively on the visible upper semi-circle cylinder and sightless lower half circle cylinder on.

After adopting technique scheme, because the face of cylinder contact point of two outside line contact chip conductive contact films and discharge tube is positioned on the visible upper semi-circle cylinder, when outside discharge tube has under external force, taking off trend, the outside line contact chip makes discharge tube be subjected to a downward component and a horizontal component, the elastic force that the elastic support that horizontal component and heat seal are opened produces is offset, make discharge tube be subjected to a downward power all the time, like this, discharge tube is with regard to difficult drop-off, because the outside line contact chip contacts with the face of cylinder of discharge tube by end face through bending, discharge tube presses the outside line contact chip under the effect of ground wire contact chip, both contact well; Discharge tube is in the effect that is subjected to ground wire contact chip power, and two contact points play the effect of location again, forms the stable state effect of " three-point fix ".Therefore, improved the reliability of Security Unit greatly.

Description of drawings

Fig. 1 is the structural representation of prior art Security Unit.

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is the structural representation of the utility model Security Unit.

Embodiment

Be described further below in conjunction with drawings and Examples.

As shown in Figure 3, a kind of Security Unit that is used on the main frame, comprise housing 1 and be installed on the interior outside line contact chip 2 of housing, wire jumper contact chip 3, thermistor 4, discharge tube 5, the heat seal switch, holding wire 6, ground wire contact chip 11, light-emitting diode 7, connect thermistor 4 between outside line contact chip 2 and the wire jumper contact chip 3, outside line contact chip 2 is through discharge tube 5 ground connection, the two ends of discharge tube 5 also connect the heat seal switch, holding wire 6 sending and receiving optical diodes 7 are connected with ground wire contact chip 11 through the heat seal switch, the heat seal switch flexibly connects sheet 8 by three ends, easily frit 9 and spring 10 are formed, easily frit 9 is arranged between the face of cylinder of three ends flexible connection sheet 8 and discharge tube 5, spring 10 is arranged on three ends and flexibly connects between sheet 8 and the housing, when easy frit 9 melts, can make three ends that three ends flexibly connect sheet 8 respectively with the two ends, the face of cylinder of discharge tube 5, one end of light-emitting diode 7 joins, earth connection contact chip 11 connects three ends through easy frit 9 and flexibly connects sheet 8, outside line contact chip 2 has rigidity, the bending of oriented discharge tube 5 directions of an end that contacts on the face of cylinder with discharge tube 5, outside line contact chip 2 is positioned on the visible upper semi-circle cylinder with the face of cylinder contact point of discharge tube 5, two contact points are arranged between the face of cylinder of ground wire contact chip 11 and discharge tube 5, two contact points lay respectively on the visible upper semi-circle cylinder and sightless lower half circle cylinder on.

Spring 10, three ends flexibly connect sheet 8 and easy frit 9 is finished the disable switch action, and light-emitting diode 7 is finished the fault alarm of Security Unit, and thermistor 4 is realized the overcurrent block function, and discharge tube 5 is finished over-voltage protecting function.

During the circuit fault-free, disconnect between outside line contact chip and ground wire contact chip, holding wire and ground wire contact chip, the Security Unit operate as normal is opened circuit in holding wire and ground wire, outside line contact chip and the contactless formation of ground wire.When circuit has the fault of long period; discharge tube generates heat for a long time, causes easy frit fusing, flexibly connects sheet and moves after the elastic force effect of spring; make holding wire and ground wire contact chip, outside line contact chip and the short circuit of ground wire contact chip, finish the defencive function of alarm, ground connection.

Claims

1. Security Unit that is used on the main frame, comprise housing and be installed on the interior outside line contact chip of housing, the wire jumper contact chip, thermistor, discharge tube, the heat seal switch, holding wire, the ground wire contact chip, warning lamp, connect thermistor between outside line contact chip and the wire jumper contact chip, outside line contact chip and the indirect discharge tube of ground wire contact chip, the two ends of discharge tube also connect the heat seal switch, holding wire connects warning lamp and is connected with the ground wire contact chip through the heat seal switch, the heat seal switch flexibly connects sheet by three ends, easily frit and elastic support are formed, easily frit is arranged between the face of cylinder of three ends flexible connection sheet and discharge tube, elastic support is arranged on three ends and flexibly connects between sheet and the housing, when easy frit melts, can make three ends that three ends flexibly connect sheet respectively with the two ends, the face of cylinder of discharge tube, one end of warning lamp joins, the earth connection contact chip connects three ends through easy frit and flexibly connects sheet, it is characterized in that described outside line contact chip is the contact chip with rigidity, the face of cylinder contact point of outside line contact chip and discharge tube is positioned on the visible upper semi-circle cylinder.

2. the Security Unit that is used on the main frame as claimed in claim 1 is characterized in that the bending of the oriented discharge tube direction of an end that described outside line contact chip contacts with the face of cylinder of discharge tube.

3. the Security Unit that is used on the main frame as claimed in claim 2 is characterized in that the end face of described outside line contact chip contacts with the face of cylinder of discharge tube.

4. as claim 1 or the 2 or 3 described Security Units that are used on the main frame, it is characterized in that between the face of cylinder of described ground wire contact chip and discharge tube two contact points being arranged, two contact points lay respectively on the visible upper semi-circle cylinder and sightless lower half circle cylinder on.