DE4114946C1 - Contact module for telephone installation distributor - has contact springs with extra contact zones extending beyond sprung contacts - Google Patents

Abstract

The contact module (1) has connection (2) for incoming and outgoing lines (3,4) and contact springs (6) in pairs, facing each other. The free ends of the springs contact at least one safety plug (9) with overvoltage (11) and fuse conductors (12). The contact springs have pairs of contacts (7) which close when the plug is pulled out. In addition the contact springs have contact zones (8) which extend over the contacts, which are connected, e.g. to the incoming lines from outside and extend over the contact springs connected to the outgoing lines. Between the contact springs of a pair there is, inside the module housing, a stop (16) for the longer spring, which is stronger than the shorter one, while the distance between the two contact zones is smaller than the thickness of the contacting region of the plug. USE/ADVANTAGE - For telephone installation distributor, with reduced contact transitions, and low-cost manufacture.

Description

The invention relates to a contact component for a Distributor in a telecommunications, especially long distance intercom with connection elements for incoming and to closing elements for outgoing line wires and with each other contact springs in pairs, each with a connection element for the incoming and a connection element for the outgoing lines are connected.

Such a contact component is such. B. by DE 32 12 013 C2 known. After that there is contact at the free ends spring at least one protective plug with surge arresters and can be connected with power fuses. The contact springs point Spring contacts on the corresponding counter contacts of the Protective plug can be contacted, so that the speech path over the protective plug and its power fuse. At pulled protective plug, the spring contacts of a Kon clock spring pair directly to each other, so that the speech short-circuited directly from contact spring to contact spring is. Will be a surge protector, but not a fine protection with a power fuse, so instead of electricity fuse a bare piece of metal is inserted over which the Lei tion is led.

The invention is based, with protection plug without power fuse the number of contact transitions and reduce manufacturing costs.

This object is achieved by the invention according to claim 1 solved.  

By separating the spring contact and the connection zones for the protective plug it is possible to adjust the travel when turning on to reduce the plug, so that the Insert protective plug more easily. According to the contact springs of different lengths can be the counter contact of a protective plug without a power fuse is shorter leads, so that only the longer contact spring with the corresponding counter contact can be contacted. Since the Surge arrester on one side over a sheet of earth Protective plug is grounded, it only requires a lead to other side and thus only one contact for longer contact spring connected to an outer wire. The shorter con Clock spring remains unaffected and due to its spring tension Connect to the longer contact spring via the spring contacts the.

When using a protective plug with a power fuse, the Contact area of the protective plug longer and thus dips between both contact springs, resulting in the shorter contact which is spread apart by the spring contact of the longer ones. Thereby the line over the protective plug and its current fuse led, so that in addition to surge protection the fine protection of a power fuse can be realized.

By the stop for the longer contact spring, this is at pulled protective plugs held in a defined position, which also has a defined position of the counter spring brings. The two springs are designed so that their Ab stood at the ends is slightly smaller than the protection plug in its contact area.

Advantageous developments of the invention are in the An Proverbs 2 to 6 marked:

Through the developments according to claims 2 and 3 the spring lengths of the contact springs set so that the  desired different spring forces come about.

By training according to claim 4, the high Fe forces of the longer contact spring in the shortest possible way into the Housing transferred, so the protective plug to this position len can be kept relatively thin.

The further developments according to claims 5 and 6 enable the cable routing via the protective plug when using Power fuses. When using only with over protective plugs that can be equipped with voltage arresters Contact tracks securely connected to the longer contact spring and the conduction path due to the spring action of the shorter ones Contact spring guided directly over the spring contacts.

In the following the invention based on one in the drawing illustrated embodiment explained in more detail:

Fig. 1 and 2 show in a plan view and a sectional view of a contact seitli chen component 1 having terminal elements 2 for z. B. arriving from a subscriber de line wires 3 and connection elements 2 for z. B. leading to a switching device outgoing line wires 4th The line wires 3 and 4 are guided by means of wire guides 5 not shown Darge from the frontal connecting elements 2 to the sides of the contact component. The connection elements 2 are connected to contact springs 6 , which are guided to the opposite end of the contact component 1 . The pair of mutually opposite contact springs 6 are each connected to one of the connection elements 2 for an incoming line wire 3 or one of the connection elements 2 for an outgoing line wire 4 . They have spring contacts 7 which can be contacted directly with one another. The contact springs 6 are extended beyond the spring contacts 7 and form elongated contact zones 8 in this end region for switching on protective plugs 9 , 10 . In this case, a 3-point protective plug 10 can only be piece-fitted with surge arresters 11 , which are electrically connected to the longer contact spring 6 . A 5- point protective plug 9 contains, in addition to the surge arresters 11, current fuses 12 , the ends of which are connected to the longer or shorter contact spring 6 . The spring contacts 7 are separated so that the Lei lines are performed on the power fuses 12 . The protective plug 9 , 10 have earth plates 13 , which are connected via feathered contact plates 14 to a frame part 15 of the distributor.

Fig. 3 shows part of Fig. 2 in an enlarged Dar position. Between the ends of the two contact springs 6, a stopper 16 is seen to be the longer of the con tact springs 6 applies when disconnected protective plug. In this state, the spring contacts 7 are closed, so that those in the contact springs 6 are connected directly to one another ( FIG. 3c). Support shoulders 17 of a housing of the contact component 1, the NEN of the adjustment of the spring lengths and the spring forces. A support shoulder 17 for the longer contact spring 6 is arranged in the immediate vicinity of the spring contacts 7 . The other support shoulder 17 for the shorter contact spring is so far offset to the front that the shorter contact spring 6 has a considerably longer spring length and thus less spring force.

The game of the longer contact spring 6 between the stop 16 and the support shoulder 17 is so small that its spring contact 7 can be considered a fixed point. However, with regard to their contact zone 8, there is a spring length which enables sufficient spring travel to make contact with the protective plug 9 , 10 .

The 3 -point protective plug 10 has a shorter contact area 18 than the 5-point protective plug 9 . This is so short that it only reaches the longer contact spring 6 and leaves the shorter unaffected ( Fig. 3b). The 5- point protective plug 9 extends with its contact area 18 to the contact zone 8 and the shorter contact spring 6 so that the spring contacts 7 are separated ( FIG. 3a).

The contact area 18 of the protective plug 9 , 10 is supported on a guide stop 19 of the housing of the contact component 1 , so that the spring forces of the longer contact spring 6 are immediately taken up.

Claims (6)

1. Contact component (1) munication for a distributor in a telecommunications, in particular telephone exchange with connecting elements (2) for incoming and connecting elements (2) for outgoing line wires (3, 4) and with one another in pairs opposite contact springs (6) each with a connecting element ( 2 ) for the incoming and a connecting element ( 2 ) for the outgoing lines ( 3 , 4 ) are connected, with at least one protective plug ( 9 ) with surge arresters ( 11 ) and current fuses at free ends of the contact springs ( 6 ) ( 12 ) can be switched on and the contact springs ( 6 ) have pairs of spring contacts ( 7 ) which are closed when the protective plug is pulled, characterized in that the contact springs ( 6 ) in addition to the spring contacts ( 7 ) for the protective plug contact zones ( 8 ) have, which are extended beyond the spring contacts ( 7 ) that the contact zones Kon ( 8 ) of the contact springs ( 6 ) with the e.g. B. from the outside incoming line wires ( 3 ) connected z. B. with the inward outgoing lines ( 4 ) connected Kon contact springs ( 6 ) protrude that between the two contact springs ( 6 ) of a pair in a housing of the contact component ( 1 ) has a stop ( 16 ) for the longer contact spring ( 6 ) seen before that the spring force of the longer contact spring ( 6 ) is greater than the spring force of the shorter contact spring ( 6 ) and that the distance between the two contact zones ( 8 ) is slightly less than an insertable contact area ( 18 ) of the protective plug ( 9 , 10 ) is thick ( Fig. 2; Fig. 3a, b). 2. Contact component according to claim 1, characterized in that the two contact springs ( 6 ) are supported on the housing on the opposite sides of the support shoulders ( 17 ) and that the support shoulder ( 17 ) for the longer contact spring ( 6 ) closer to the spring contact ( 7 ) lies as the support shoulder ( 17 ) for the shorter contact spring ( 6 ) ( Fig. 2; Fig. 3a, b, c). 3. Contact component according to claim 2, characterized in that the support shoulder ( 17 ) for the longer contact spring ( 6 ) is arranged in the immediate vicinity of the spring contact ( 7 ) ( Fig. 2; Fig. 3a, b, c). 4. Contact component according to claim 1, 2 or 3, characterized in that the housing on the side of the shorter contact spring ( 6 ) give over the free end of the longer contact spring ( 6 ) a large-area guide stop ( 19 ) for the contact area ( 18 ) of the protective plug ( 9, 10 ) ( Fig. 3a, b, c). 5. Contact component according to one of the preceding claims, characterized in that the longer contact spring ( 6 ) with inserted protective plug ( 9, 10 ) on its support shoulder ( 17 ) ( Fig. 3a, b), when the protective plug is pulled against the stop ( 16 ) is present ( Fig. 3c). 6. Contact component according to one of claims 1 to 5, characterized in that the shorter contact spring ( 6 ) with inserted, with current fuses ( 12 ) provided protective plug ( 9 ) on the contact area ( 18 ) ( Fig. 3a) and that it is at one inserted protective plug without power fuses with its spring contact ( 7 ) on the spring contact ( 7 ) of the longer contact spring ( 6 ) ( Fig. 3b).