DE7403842U - Arrangement for attaching removable back panels to electrical devices - Google Patents

Description

SABA Schwarzwälder Adpqrä '^ e ¹ FJaii Ans'tajlt "·' August Schwer Sons G'.m.'bH
773 Villingen / Black Forest

GA 267

Utility model application

Arrangement for attaching removable back panels on electrical devices

The innovation relates to an arrangement for attaching removable rear panels to electrical ones Devices, in particular electrical receivers Communications engineering.

There are various solutions for attaching the rear panel to the housing of an electrical device. Such arrangements usually consist of releasable screw connections on the housing by at several points. E.g. at the 4 corners of the rear wall there are holes through which cheese head screws are inserted and are screwed with these assigned threaded sockets embedded in the housing. So that the socket head screws When loosening the back wall not get lost, it is known that it falls out of the back wall to prevent that on the inserted through the holes in the rear wall screws from the other side

Lock washers are pressed on · For this it is necessary that the rear wall is in a separate Operation for attaching the numerous screws is pre-assembled by using aine ^ A device specially built for this purpose, the screws with the lock washers are plugged together in the rear wall · It can happen that the lock washers burst during this assembly process and this has to be repeated. These lock washers can also be used while the device is in use become defective, so that the corresponding screw is usually lost when the rear panel is removed.

The innovation is based on the task of a simple To create fastening devices for rear walls, which can be attached without a special device and thus no separate workstation for their assembly needed. Another underlying the innovation The main task is to allow larger manufacturing tolerances of the rear wall and housing .

This is achieved in that the device consists of one part, the soft one of the string Rear wall inserted through it and one through a longitudinal slot made in the part Inserted screw pressed in with a bracket attached to the housing of the device Threaded bushing is screwed, and that the part has pins and locking lugs that go through in the rear wall Attached longitudinal slots grip, the

• ι «·

Longitudinal slotB run at a right angle to the longitudinal slot made in the part through which the screw is inserted, which is held captive in the part in that it has a thread in its front section in a known manner which screws the part through the slot is, while the rear portion of the screw 12 has a diameter which is smaller than the width of the sole seat made in the part.

The innovation in an exemplary embodiment is described in more detail below with the aid of FIGS. 1 b ', s 3.

Here, Figure 1 shows a plan view of the fastening device represent.

Figure 2 shows a section through the fastening device along the line II-II Fig. 1

FIG. 3 shows a section through the fastening device along the line III-III Fig. 1,

A plastic part is provided by the rear housing wall 1, which is to be fastened to a housing (not shown in detail) 2 inserted, which is mounted in longitudinal braids 3, 4 in the rear wall 1 by means of pins 5, 6 or is held in a snap-in manner by longitudinal slots 7, 8 penetrating latching lugs 9, 10. In one

I ·

A captive screw 12 is mounted in the longitudinal slot 11 of the plastic part 2

In Figure 2 is a section II-II of the arrangement shown in FIG. It is clear that the pins 5, 6 in the longitudinal slots 3, 4 and so that the entire plastic part 2 can be displaced in the direction of arrow A in the rear wall 1 in order to compensate for height tolerances so that the screw 12 "can hit the threaded bushing 14 pressed into a housing bracket 13. The through the longitudinal slots 7, θ in the selected section II-II in Figure 2, not shown latching lugs 9, 10 in the direction of arrow A indicated in Figure 2.

In Figure 3, a section III-III of Figure 1 is shown. Here you can see the locking lugs 9, 10, Snap in the back wall 1. With Fig. 3 it should be shown that the screw 12 in the there indicated arrow direction B through the longitudinal slot 11 is freely movable. This allows side tolerances of the rear wall and housing to be absorbed. In this way, the fastening device described has two mutually perpendicular displacement options. Finally, the device has the advantage that it can only be used when the rear wall is attached, which means that the rear wall is preassembled can be omitted. The screw 12 is in a known manner thereby secured against falling out that their threaded part 12a through the longitudinal slot 11 of the plastic

74fil4i-ii.il

tails 2 is screwed in and the rest of the shaft part 12b of the screw 12 has a smaller diameter than the width of the slot 11 has.

-B-

Claims (1)

Sohutz claims Arrangement for attaching removable RUokwilden to electrical devices, in particular Receiving devices of sleek communication technology by means of detachable screw connections, characterized in that it consists of a part 2, which from one side The rear wall 1 passes through and engages in this and a screw 12 inserted through a longitudinal slot made in the part 2 with it screwed into a threaded bushing 14 pressed into an angle 13 attached to the housing of the device is, and that the part 2 has pins 5, B and locking lugs 9, 10, which grip through longitudinal slots 3, 4 and 7, θ made in the rear wall 1, wherein the longitudinal slots 3, 4, 7, 8 at a right angle to the longitudinal slot 11 made in part 2, through which the screw 12 is inserted is, which is held captive in the part 1 that it is in a known manner on her front section 12a carries a thread which is screwed through the sole seat 11, while the rear Section 12b of the screw 12 has a diameter which is smaller than the width of the slot