CN2341309Y

CN2341309Y - Safety unit

Info

Publication number: CN2341309Y
Application number: CN 98230533
Authority: CN
Inventors: 唐友如; 杨铭玄
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-12
Filing date: 1998-04-12
Publication date: 1999-09-29
Anticipated expiration: 2008-04-12

Abstract

The utility model relates to a safety unit, composed of a circuit board arranged under a shell body, and pins, an electricity discharge diode, a fusible sheet, a high molecular compound limiting resistor, an emitting diode, a contact spring sheet, a ground spring sheet, etc. The protective exchanger of the utility model has the functions of safe over-current and over-voltage protections and a unique Fs failure acoustic-optic synchronous alarm. The protective exchanger has the advantages of advanced design, fast action, wide scope, high safety, small size, convenient concentrated arrangement and convenient manufacture, mounting and dismounting.

Description

Security Unit

The utility model belongs to a kind of protective device of protecting switch.

The protective device that is equipped with on the communications service in the past, as with the protector of rural telephone exchange adapted, running into when communication line under the situation of thunderbolt or heavy current surge, though can play outage, disconnect, the effect that the protection switch is not damaged, but owing to lack warning device, the insufficiency that seems influences the timely fast processing accident of staff; Volume is big in addition, and it is many to take up room, and user installation is used has increased difficulty.Existing Security Unit still is that volume is big, and after accident took place, luminous demonstration and sound alarm substep carried out, still the problem that exists alarm to lag behind.How to improve the structure of Security Unit; improve the performance of product; realization sound, light alarm synchronization, agility; become the topic that professional designer and users often talk about; people are expecting multiple functional; the protective device of stable performance comes out early, plays the effect of better protection switch.

The purpose of this utility model is that at above-mentioned situation a kind of volume of design is little, and sound, light alarm can be carried out the Security Unit of stable performance synchronously.

The method that the utility model is finished designs at following situation: the one, and Security Unit will be realized the effect of overcurrent protection switch.When big loop overload current appears in external cable, as induced current,, the PTC that makes Security Unit is high resistant for moving rapidly, and limit big electric current and flow into switch, adopted macromolecular compound PTC current-limiting resistance.The 2nd, Security Unit will be realized the effect of fuse sheet inefficacy ground protection switch.When high voltage appears in external cable; as high frequency voltage; or run into when being struck by lightning; adopt gas discharge tube repid discharge over the ground; switch is protected by ground, and when reaching the several seconds as if the voltage duration, the gas discharge tube of continuous discharge produces heat melts fuse sheet rapidly; discharge tube is direct and ground UNICOM under the impetus of spring, realizes a, b line ground connection by force.Form by components and parts such as discharge tube, fuse sheet, macromolecular compound current-limiting resistance, light-emitting diodes.The 3rd, Security Unit will realization sound, the effect of light-operated synchronous warning.In fuse sheet inefficacy ground connection, a or b line link to each other with alarm line simultaneously, and the alarm box sends the visible sound of audible, light alarm, adopt light-emitting diode and alarm box to be communicated with circuit board.

The utility model has the advantages that: 1, advanced design, protection are comprehensive.Overcurrent, overvoltage protection and unique Fs invalidation functions are fully reliably arranged, and protection is swift in motion, and protection range is wide; 2, the Synchronize Alarm function is arranged.When the Fs invalidation functions was moved, luminous demonstration and sound alarm synchronization were carried out; 3, blocking design, assembling and disassembling is very convenient; 4, the duty volume is little, is convenient to concentrate arrange; 5, snap fit, all binding posts all adopt double-deck dual-mouth, finish the clamping operation rapidly, conveniently, reliably; 6, housing reaches national GOFV-O and relevant anti-fire-retardant standard, and is safe in utilization.Market prospects are wide, can produce good economic benefits and social benefit.

Accompanying drawing 1 is an agent structure schematic diagram of the present utility model, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is circuit theory diagrams.

Most preferred embodiment of the present utility model is: wiring board (10) is installed in the bottom of housing (1), two pins (9) are installed in an end of housing, two two utmost point discharge tubes (8) symmetry is installed in of housing, two easy fusings (7) that end face is equipped with contact spring (6) are installed between two two utmost point discharge tubes relatively, with grounding reed (16), (17) connect, be equipped with between two utmost point discharge tubes and the fuse sheet and be connected reed (5), spring (4) is installed between two utmost point discharge tubes and the contact spring (3), macromolecular compound current-limiting resistance (2) is installed in the middle part of housing, light-emitting diode (14) utilizes screw (12) to be positioned between housing and the cover plate (13), contact spring (15) is installed in the top of housing, and contact spring (11) is installed in lower part of frame.Wherein two pins (9), contact spring (3), grounding reed (16), (17), contact spring (6), macromolecular compound current-limiting resistance (2), contact spring (11), contact spring (15), light-emitting diode (14) are connected with wiring board separately.

Claims

1, a kind of Security Unit, comprise housing, the macromolecular compound current-limiting resistance, spring, wiring board, light-emitting diode, it is characterized in that wiring board (10) is installed in the bottom of housing (1), pin (9) is installed in an end of housing, secondary discharge tube (8) symmetry is installed in of housing, the fuse sheet (7) that end face is equipped with contact spring (6) is installed between two utmost point discharge tubes relatively, with grounding reed (16), (17) connect, connecting reed (5) is installed between two utmost point discharge tubes and the fuse sheet, spring (4) is installed between two utmost point discharge tubes and the contact spring (3), macromolecular compound current-limiting resistance (2) is installed in the middle part of housing, light-emitting diode (14) is positioned between housing and the cover plate (13), contact spring (15) and (11) be installed in respectively housing on, the bottom.

2, Security Unit according to claim 1, it is characterized in that pin (9), contact spring (3), (6), (11), (15), grounding reed (16), (17), macromolecular compound current-limiting resistance (2), light-emitting diode (14) are connected with wiring board separately.