DE2351530A1 - Support rail for in-line terminals - uses synthetic material with hooked edges for fixing to equipment rail - Google Patents

Abstract

The support rail for in-line terminals is made of synthetic material and has a U-shaped profile section with two opposing rest strips between which the feet of the appropriate terminals are spread out to give positive locking. The outside of the profile ends in hooks to grip the outward turned edges of a top hat section rail, so that the two rails are firmly connected. On one side of the synthetic support rail notches are cut leaving flexible teeth with hooked ends resiliently gripping the edges of the top hat section rail. The top hat section rail may be fastened to an appropriate support.

Description

Georg Schlegel
Electrotechn. factory

Diirmentingen

Terminal rail with

two locking strips facing each other

The invention relates to a modular terminal support rail with a U-shaped profile section and two each other facing locking strips, between which the locking feet of the associated terminal blocks spread apart elastically. A well-known modular terminal rail of this type is based on the standard sheet DIN> 6277, sheet 1, standardized in Germany. , "

On the other hand, support rails are known whose locking strips are facing away from each other. An example of this is the mounting rail 35 x 27 χ 7.3 DIN 4-6277, which is shown in sheet 3 of. mentioned standard is recorded. It is used for the quick attachment of installation devices, for example automatic circuit breakers and the like, and is therefore referred to below as a device support rail.

Since in house installations and switchgear often There is a need to also use terminal blocks on device

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to fasten rails, special terminal blocks have already become known that have the appropriate Locking devices are provided. However, it is for unsatisfactory for the electrician, terminal blocks of the two types in the various sizes on Having to hold stocks. In addition, this dual approach makes a mass-produced item like terminal blocks more expensive represent, considerably.

The invention is therefore based on the object of providing a simple and inexpensive option for the user to create the more commonly used terminal blocks for support rails with locking strips facing each other also on a mounting rail with locking strips facing away from each other, i.e. a device mounting rail, to be able to attach

This task is carried out using a special mounting rail, which is supported by a terminal rail of the initially specified type proceeds, according to the invention achieved in that hook-like on the profile outside Formations are provided which serve to hold the locking strips of a device support rail facing away from one another to reach behind and thereby connect the two rails parallel to one another. In particular at least one of the projections can be elastically flexible, so that the terminal block support rail on the device mounting rail can be snapped on. The known conventional terminal blocks can be applied to the inventive Snap the mounting rail onto a previously known mounting rail with locking strips facing each other.

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The new mounting rail will preferably be made of plastic, but it can also be useful to make them out of metal. The elastic resilience of the projections on at least one side can to enlarge in a further development of the invention, that the molding or * the profile section, the elastic must be movable, is interrupted in the longitudinal direction of the rail by transverse slots.

The advantage of the invention is that the installer only have to store one series of terminals and keep them available at the construction site. The inventive The mounting rail is manufactured in economical lengths and can be cut off at the construction site as required will.

With reference to the design of the new mounting rail profile in detail it is proposed that the essential dimensions for the latching of the terminal blocks DIN 46277, sheet 1, namely the clear distance of the Latching strips in the width direction of 16.5 now and the Maintain a height difference of 6 mm between the locking strip surfaces, observing the specified tolerances will. The outside width of the U-shaped profile section is, however, adapted to the internal width of the standardized device support rail. The protrusions are on the legs of this profile section. The difference in altitude the locking strip is thereby preferably used to form a long-armed and thus flexible pawl exploited that one on the longer leg at a distance from the relevant locking strip of the device support

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²³⁵¹⁵

a rail strip attaches ^n, the HXBto is folded outwardly downwards. The lower part of the folded part takes the form of a hook or a latch with an inclined run-up surface. On the other hand, a strip is simply attached to the shorter leg, which is bent in the shape of a hook around the east strip. It is also expedient and with regard to the aforementioned standardized device support rail also possible to set the strips on the legs at the same height as the locking strips facing each other, so that the result is that the locking strips are widened outward to form common bearing surfaces. The U-shaped profile parts of both rails then lie completely inside one another in a space-saving manner.

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An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. In detail shows:

Pig. 1 shows a cross section through an inventive Terminal rail together with the standardized device mounting rail that holds it,

and

Fig. 2 is a three-dimensional representation of the terminal block Ent rack rail according to Pig. I, from which the transverse slots that may have to be attached can also be seen.

In Fig. 1 is a mounting rail 35 x 27 χ 7.3, DIM 46277, referred to as 1 as a whole. It is divided into a U-shaped profile part called a draft in the standard, consisting of a base la and two legs Ib, as well as two detent strips facing away from one another Ic and Id. The profile of the support rail 2 according to the invention, here made of plastic, is divided into a U-shaped one Part with a bottom 2a and two legs 2b and 2c of unequal length, as well as in those facing each other Snap-in strips 2d and 2e. The basic C-like shape described so far corresponds in principle to the mounting rail 32 DIN 46277- The clear distance 3 of the locking strips in the width direction and the difference in height 4 of the locking strip surfaces are as big as with the standardized rail. However, the outer width of the U-shaped profile part is compared to the norm decreased so that this part of the

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according to the invention. Rail exactly in the U-shaped Part of the device support rail 1 fits · The height of the legs 2b and 2c is also compared to the standard little shortened, so far that a strip attached to the outside of the short leg 2b 2f, which represents a widening of the bast strip 2d, on the locking strip Ic of the device support rail rests. The outer edge of this strip 2f is bent around the latching strip Ic at 2g, so that he grasps this from behind.

The other latching strip 2e is also widened outwards and bent downwards, with one relatively long fold 2h results, on the lower edge of which a pawl is formed, the one Has inclined surface 2i and engages below the locking strip Id of the device support rail 1. For stiffening of the leg 2c, a shorter, closer to the outside facing, support strip 2k is provided, which is on the top rests on the latching strip Id.

The modular terminal support rail 2 described is locked onto the device support rail 1 in that one first the bent edge 2g hangs over the edge of the locking strip Ic and then simply on the locking strip 2e presses. The inclined surface 2i lies against the edge of the support strip Id, so that the fold 2h by this downward movement, it is first pushed outwards until the pawl is underneath the latching strip Id occurs. The two rails are now firmly connected to one another. The terminal blocks ».

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carrier rail 2 can be before the described latching process, or after that, be fitted in a known manner with terminal blocks 5, the locking feet 5a and 5t> spread apart between the locking strips 2d and 2e. The small changes in dimensions reduce the interior space the new series cling rail only a little, so that all common terminal blocks regardless of the Training of their locking feet can be used.

Fig. 2 shows the rail according to the invention once again in a three-dimensional representation. From this it can be seen that the fold 2h has transverse slots 6 at regular intervals so that individual Pawls 7 arise, the resilience of which is greater than when this profile part is full with the same thickness would be executed.

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Claims (1)

e. Expectations Iy terminal rail rait a U-shaped Profile section and two facing each other Hasty strips between which the hasty feet are the associated terminal blocks elastically spread apart, characterized in that on hook-like projections on the outside of the profile (2f, 2g, 2h, 7) are provided, which serve to hold the hurry strips facing away from each other (lc, ld) to reach behind a device support rail (1) and thereby connecting the two rails (1 and 2) parallel to each other. 2. Terminal rail according to claim 1, characterized in that at least one of the Formations is elastically resilient, so that the terminal block support rail (2) on the device support rail (1) can be snapped on. File 28l6 (a) - 2 - 509816/0620 3 · Terminal rail according to claim 2, at according to DIN 4-6277, sheet 1, the clear distance the locking stripe in the width direction 16.5 mm and the height difference of the locking stripe surfaces 6 mm, characterized in that the outer width of the U-shaped profile section (2a, 2b, 2c) to the passage inside width of a mounting rail 35 χ 27 x 7.3, DIN ^ 6277, as the device mounting rail (1) is adapted, and that the projections on the legs (2b, 2c) of this profile section are arranged. 4. Terminal rail according to claim 3, characterized characterized in that on the shorter leg (2b) a on the relevant locking strip (Ic) the strip on the device support rail (2f) is attached, which is bent like a hook (2g) around the locking strip. · 5. Terminal rail according to claim 4, characterized in that on the longer leg (2c) a strip at a distance from the relevant locking strip (ld) of the device support rail is attached, which is folded downwards on the outside (2h), and that the lower edge of the folded part forms an elastically outwardly bendable pawl provided with an inclined run-up surface (2i). File 28l6 (a) - 3 - 50981 6/0620 Terminal block support rail according to claim 5 »thereby characterized in that the strips are attached to the legs at the same height as the mutually facing strips of bast (2d, 2e), so that they form common contact surfaces widen outwards. 7. Eeihenklemraetragschiene according to one of the preceding Claims, characterized in that the projections (2h) on at least one side are interrupted in the longitudinal direction of the rail by transverse slots (6). File 2816 (a) 509816/062 0