DE8906492U1 - Device for connecting a front panel to a module rail of a subrack - Google Patents

Description

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The invention relates to a device for

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,- 3*1 the hinge pin for the screw hole in the housing forms the front plate with a screw which is screwed into a threaded hole in the housing and is connected to the north-east rail, and with a contact spring which, under mechanical tension, supports the contact points in an electrically conductive manner on the back of the front plate.

A device of this type is known from DD 241 176 A1. In this known device, the contact spring only connects the front plate to the module rail; the threaded hole strip inserted into the module rail is not in direct electrical connection to the front plate. It has been shown that in some cases sufficient interference radiation attenuation cannot be achieved.

As IP 0 129 083 A2 shows, it is known to insert a contact spring into a receiving groove of a module rail, which extends into contact tongues, which are arranged in the division of the module rail and are connected to the plugged-in component assemblies. There is also no direct electrically conductive connection between the contact spring and the contact strips of the component assemblies.

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In the »Egr; 31 43 174 Agr;1 a sleeve-shaped contact spring is shown which is used for contacting a printed circuit board. The« M? 39 92 65* shows sleeve-shaped contact springs for printed circuit boards.

DE 30 01 350 A1 shows electrically conductive contact screws for the purpose of better contact/ which are provided with penetrating claws/ which pierce surface layers in the area of the system and thus ensure good contact.

DE 22 59 577 C3 shows a contact spring arrangement for a wet contact, which has elastic/electrically conductive contact springs for the purpose of contacting electrical carrier plates with the housing wall of the receiving housing.

It is the object of the invention to create a device of the type mentioned at the beginning, in which the contact springs are designed in such a way that they can also be subsequently inserted at any point on the module rail of the module carrier without dismantling the latter and in doing so create a clear electrical connection between the front panel/threaded hole strip and the module rail of the module carrier.

This problem is solved according to the invention in that the contact spring is designed as an integral contact part, the width of which is designed to match the width of the receiving groove in front of the threaded hole strip, and in that triangular contact points are provided on the contact part, the tips of which are directed towards the front plate and/or the threaded hole strip.

In this design, front side into the

of the contact part
Receiving groove of the

it can be removed from the module rail

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• The air-tight contact penetrates the protective cover on the front panel so that a good, clear contact is ensured.

According to the inspection, it is assumed that the contact tip is of an extremely high _strength and that the contact tip is attached to the 8-1 timing chain. The contact tip does not have too much strength so that the front plate can be screwed into place with great force. The contact tip penetrates the paint or similar on the front plate, which has a light or even no visible light effect.

The individual placement of the contact points in the front plate is achieved in its design by the fact that the U-shaped holes are punched out on each side of the contact plate, which are preferably arranged at the end of the contact plate.

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that the contact part has an H-shaped alignment and that at all free edges of the 8e1 tenjchenkil there are two contact points. The contact part then creates a good electrical connection both to the front panel and to the wind hole. The alignment of the

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the threaded insert is inserted, whereby the fastening tube is screwed through the contact plate 1L into the thin threaded hole Lt11. The contact plate only requires a small dimension % in the longitudinal direction of the module rail, so that its narrow front plate connects well with the threaded hole Lt11.

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Contact points with their feet vertically aligned with the wall thickness and lengthways in the mounting groove on the module.

This ensures that the contact pressure is transferred when tightening the fastening screw to the contact area.

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The invention is explained using two exemplary embodiments shown in the drawing.

Only a part of the front lower module rail 20 is shown on the subrack, which can be made up of several profile sections. This is not important for the present invention. It is only important that the module rail 20 has a receiving groove 23 that is open to the front and a groove-shaped extension.

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ss uBvrgvntf in en inginineniung with B*R &igr;&pgr;&bgr;&igr;&bgr;&bgr;&pgr; ringwn 25. Behind the threaded hole strip 24 there remains a free space 21 of the receiving groove 23 in which the ends of the fastening screws 11 screwed into the threaded holes 25 are seated. The fastening screws 11 are held captive in the socket part 12 but can rotate freely, which is fixed in a hole in the front plate 10.

■•before the fastening screw 11 is screwed into a threaded hole 25 of the threaded hole strip 24 inserted into the extension 22 of the receiving groove 23, a contact part 30 is inserted into the receiving groove 23 from the front. Therefore, the elongated contact part 30 only has a width which can be determined by the width of the receiving groove 21 .

If the output section is closed, the contact tip 30 can be removed as a U-shaped contact bellow. The contact tip 31 then opens the central hole 38 for the ventilation screw 11.

The contact points 32 and 33 are directed in the direction of the front plate 10 and are brought into contact with the contact points 34 and 33 into the receiving groove 23 with their tips, so that at the point of actuation 11 the front plate 10 is checked by the contact points 34 and 33. To do this, the front plate 10 is pierced so that a good connection is made between the front plate 10 and the wall hole 24, onto which the contact part 30 rests. The dimension of the contact part 30 in the longitudinal direction of the module section 20 is small, so that even smaller front plates 10 can be connected to one another and to the module section 20.

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Quarter turn is selected. 01· Legs 32 and 31 &bull;tn on both sides of the middle section 31 in front and on the front edges of the two contact points 34, 35, 30 or 37, which is to be arranged in the end sections of the edges. The contact attachments 34 and 35 rest on the back of the front plate 10 and the contact attachments 36 and 37 on the front of the control panel 24, so that a tight connection is created both at the front plate 10 and at the wall hole 24. The contact part 31 carries the contact part 30 by screwing the hole 38 for the control panel 11. The contact part 30 can be made of cast iron.

Claims (6)

feVo«e»Pft*ittlne#nt#ur · 7141 SehwMMRllngM ■ H^A4nd-tt^g.8t/*#3e·· HMefOfl(07160)33271 · lWetax(07100)32101 Rltta L - Wtrk Rudolf Loh GmbH t Co . KG PO Box 16 62 H e r b &ogr; r &eegr; - 1 claim· 1. Device for the electrically conductive connection of a front panel to a module rail of a module carrier, in which the module rail ^has a receiving groove open towards the front with a plug-in receptacle for a threaded hole strip, in which the front panel is ^screwed in with at least one threaded ^hole strip, connected to the module rail, and in which a contact spring, which is supported under mechanical tension with contact points in an electrically conductive manner on the rear of the front panel,
characterized, that the contact spring (30) is designed as an elongated contact part (30), the width of which is designed to match the width of the receiving groove (23) in front of the threaded hole strip (24), and dal) triangular contact points (34,35, 36,37) are provided in the contact part (30), the tips of which are directed towards the front plate (10) and/or the threaded hole strip (24>). 2. Device according to claim 1,
thereby jekennzeichr.et, * W ~ * ■ · ft that the contact part is designed as a stamped and bent part (30) 1m cross-section U-shaped/ and
that the contact points (34,35) are punched out on the shanks (32/33). 3. Device according to claim 2,
characterized, that two contact points (34,35) are punched out on each side leg (32,33) of the U-shaped punched and bent part (30), which are preferably arranged at the ends of the side legs (32,33). 4. Device according to claim 1,
characterized, that the contact part (30) has a H-shaped cross-section and that two contact points (34,35, 36,37) are punched out on each of the free edges of the side legs (32,33). 5. Device according to one of claims 1 to 4,
characterized, that the triangular contact points (34,35, 36,37) are aligned with their planes perpendicular to the threaded hole strip (24) and in the longitudinal direction of the receiving groove (23) of the module rail (20). 6. Device according to one of claims 1 to 5,
characterized, that the nut web (31) of the contact part (30) is provided with a central hole (38) for the fastening screw (11).