AT392855B - Torsion spring suspension and method for producing it - Google Patents

Abstract

A description is given of a torsion spring suspension 878 having at least one torsion spring for connecting a holder 871, 872 for, e.g., boards (tickets, plates, labels, stickers, tags) or similar information or advertising media to a frame 886, where the holder 871, 872 can be pivoted (swivelled) resiliently relative to the frame 886 from its rest position about the torsion spring axis. The torsion spring is formed by at least one elastomeric member 879 provided between two sleeves 876, 880. Said member is biased, or can be biased, during assembly, for example by compression and/or rotation relative to the torsion spring axis. <IMAGE>

Description

AT 392 855 B

The invention relates generally to displays or stands for the mobile attachment of signs, posters or the like advertising or information carriers, in particular in the area of shops, workshops, petrol stations or the like.

More specifically, the invention relates to a torsion spring suspension with at least one torsion spring for 5 connection of a holder for z. B. signs or the like information or advertising media with a frame, the holder from its rest position about the torsion spring axis is pivotable relative to the frame.

Furthermore, the invention relates to a method for producing such a torsion spring device.

In the case of torsion spring suspensions of the type in question here, it is important that the signs, posters and similar information carriers (for example also warning signs for emergency situations) are clearly visible and legible, regardless of the weather conditions. Various constructions have therefore already been proposed for this, in which the signs, etc., can be pivoted to a limited extent, for example under the action of wind forces, this flexibility in the pivoting preventing the entire stand or stand from tipping over. This limited mobility is all the more important the larger the information area that is exposed to the wind or other forces. Examples of such spring suspensions are shown in U.S. Patents 3,646,696; 15 3 662 482; 4,033,536; 4,265,040; 4,288,053; 4,509,714; 4,516,344; 4,544,125; 4,548,379; 4,569,499;

4,572,473; 4,575,040; and 4,593,879

Although in practice some of these known constructions have proven to be satisfactory in their function, it is desirable to provide an improvement in that the time and costs involved in production are reduced, smaller masses are required, and the service life is increased 20 is, and the design and function is improved, but of course the described deflection, for example with stronger wind forces, should be possible without tipping over.

From DE-OS 2 111 338 then a torsion spring suspension of the type specified is known, in which a torsion spring is provided for connecting a billboard holder to a frame, but it is a conventional torsion bar with a square cross section, the ends of which 25 are machined cylindrical; apart from the fact that this torsion bar is relatively expensive to manufacture and complex to machine, it also has the disadvantage that the suspension properties can only be determined relatively imprecisely.

This disadvantage also applies to the coil spring suspension according to US Pat. No. 2,030,379. Furthermore, the cumbersome assembly and the fact that the springs of the suspension are exposed 30 and thus easily dirty or corrode are disadvantageous.

The aim of the invention is to provide a torsion spring suspension of the type mentioned at the outset, in which a compact, closed, nonetheless simple and inexpensive construction is possible, the spring strength desired in each case also being able to be adjusted without problems.

The torsion spring suspension according to the invention of the type mentioned at the outset is characterized in that the torsion spring is formed by at least one elastomer body, the elastomer body being pretensioned, for example by compression and / or twisting relative to the torsion spring axis, or can be pretensioned during assembly and / or at least two elastomer bodies with different compression spring constants are provided one inside the other, separated by an intermediate sleeve. With such a design, a compact, closed construction is made possible, in which moreover the necessary spring strength can be easily and precisely defined in advance. The spring is also pushed out and a long service life is ensured.

The elastomer body reliably allows a controlled swivel deflection of the respective sign or similar information or advertising medium, whereby it is twisted or twisted. This allows the shield to deflect in an inclined position in the event of wind or other acting forces, and when 45 forces no longer act, the shield returns to its rest position due to the spring force. It should be mentioned here that the expression &quot; resting position &quot; not only a vertical orientation is to be described, but rather any orientation relative to the frame, such as in an inclined position, in a downward position or even in a horizontal position projecting from the frame, should be included

Due to the extremely compact design of the torsion spring suspension, which can be self-contained, the torsion spring suspension is also resistant to environmental influences. The elastomer body can be protected in an advantageous manner, and it is also possible without any problems, depending on the application, to select elastomer bodies with corresponding, particularly suitable characteristic values or spring constants, depending on the mass to be supported, on the installation site, etc. Preloading the elastomer body contributes to a longer service life. 55 With regard to a particularly advantageous mode of operation of the torsion spring, it has proven to be advantageous if the elastomer body or rings is annular between an outer housing forming the connection to the holder or frame, preferably an outer sleeve, and one forming the connection to the frame or holder inner shaft part, preferably an inner sleeve, attached and thus firmly connected. In view of the compression preload mentioned above, it is advantageous if the elastomer body or 60 is or are simply held radially compressed between the outer housing and the inner shaft part.

To easily achieve the specified compression preload during assembly, it is -2-

AT 392 855 B is also advantageous if the outer housing is split and, when assembled, is compressed to a narrower cross-section by compressing the elastomer body. Assembly can be further facilitated if the outer housing has two legs adjacent to the gap, at their connection, for example with the holder, the elastomer body is compressible An additional relief during assembly is furthermore obtained if the distance between the legs in the relaxed state is greater than the width of an upwardly extending support part belonging to the frame or the z. B. rod-shaped holder to compress the elastomer body when the legs are joined together with the support part or holder. For a stable connection, it is also advantageous here if the upstanding legs have grooves into which z. B. U-shaped mounting bracket for the holder provided projections, whereby the elastomer body is kept compressed

In the case of several elastomer bodies, there are particularly advantageous possibilities with regard to the suspension behavior of the torsion spring suspension.

It is particularly advantageous, for example, if the inner elastomer body has a higher spring constant than the outer one. The elastomer bodies work "in series", and a particularly favorable response of the torsion spring suspension can be achieved in different wind conditions. In weak winds, the harder, stiffer elastomer body is not or only slightly twisted, and in this situation it acts as a relatively stiff element. With increasing wind strength, however, both elastomer bodies deflect in order to prevent the stand or stand from tipping over. In this way, the shield or the like is not deflected as much in weaker winds, and it does not start to flutter, and the life of the torsion spring suspension is further increased.

On the other hand, an arrangement can also be provided in which a plurality of elastomer bodies are essentially &quot; parallel &quot; work. Accordingly, an advantageous embodiment of the invention is characterized in that at least one pair of elastomer bodies is provided, each of which is fixedly connected to an associated inner sleeve, which in turn is connected to one of two holders, the radially outer parts of the two elastomer bodies being connected to the frame are firmly connected, and that the elastomer bodies are biased in opposite circumferential directions with respect to the torsion spring axis. With such a design, one elastomer body is relieved, while the other elastomer body is further stretched by twisting, if not too strong wind forces attack. With stronger wind forces, however, both elastomer bodies are tensioned by twisting during the continued deflection of the shield or the like. With this design, the advantage of a particularly long service life of the elastomer body and thus of the torsion spring suspension is achieved, among other things proven to be advantageous if an outer sleeve is firmly connected to the radially outer part of each of the elastomer bodies and is firmly coupled to the frame

In order to accomplish the prestressing of the elastomer bodies in a particularly simple manner in this embodiment, it is also advantageous if the two inner sleeves with the associated holders are rotated relative to one another with respect to the torsion spring axis in the state before the shield or the like is installed, the inner ones Sleeves and the holder are rotatable in the circumferential direction in a common radial orientation and can be fixed in this position when the shield or the like is fastened, as a result of which the elastomer bodies are prestressed in the opposite circumferential directions with respect to the torsion spring axis.

Here, too, the connection to the frame can be accomplished in a simple manner in that the outer sleeves are held in place in the circumferential direction by means of one or more fastening parts and connected to the frame. The fastening part can at the same time, in the form of a fastening clamp, perform the function of the prestressing element for the elastomer bodies, and accordingly it is advantageous here if a fastening clamp, which at least partially surrounds the outer sleeves and is firmly connected to the frame, is provided, which has at least one laterally has an elongated opening in which lugs attached to the outer sleeves are received and held in the manner of a catch.

In order to avoid overstressing, it is then also advantageous if at least one stop is provided in a manner known per se to limit the torsion spring movement of the elastomer body

An advantageous, simple design can be achieved in that the stop is connected to one of the sleeves and projects into the pivoting path of the holder in order to limit its pivoting movement and thus the torsion spring movement of the elastomer body. It has also proven to be favorable for the desired long service life of the elastomer body if the stop limits the torsion spring movement of the elastomer body in accordance with a pivoting angle of the holder of approximately 55 °. It is a particularly stable connection of the torsion spring suspension to a sign, a board or the like then of advantage if two holders extend laterally away from the sleeve or sleeves to which they are attached in opposite directions. This results in a particularly favorable possibility with regard to the abovementioned stop function if, as each holder in cross-section is essentially U-shaped, with two U-legs provided at a distance, and the stop is designed as a protrusion projecting between the U-legs of the holder . Furthermore, it has proven to be advantageous here if the projection is essentially triangular, the apex of the triangle between the U-legs -3-

AT 392 855 B is arranged and the triangular sides are each assigned to one leg as a stop on both sides of the apex. For the connection of the torsion spring suspension with the holder for the shield or the like or with the frame, it is then advantageous if a mounting rod accommodated therein is rotatably connected to the inner sleeve, for. B. is wedged. For a particularly simple design, it is also advantageous here if the opening of the inner sleeve and the assembly rod have a non-circular, in particular polygonal cross section corresponding to one another and are thus connected in a rotationally fixed manner. The assembly rod can in particular be non-rotatably connected to the holder (s). For fastening the assembly rod, it is also advantageous if the assembly rod, which has a polygonal cross section, is received with the ends in corresponding polygonal openings in, in particular plate-shaped, assembly parts belonging to the frame or to the holder

With regard to a particularly simple construction, on the other hand, it is advantageous if the holder connected to one of the sleeves is formed in one piece. For a simple, non-rotatable assembly, it is also advantageous if the part connected to the frame, for example the inner sleeve, is provided with a flattened end which is received in a slot in one of two upright, spaced-apart plates belonging to the frame is. It can further be provided that the inner sleeve has a bore at the end opposite the flattened end, in which a plug connected to the other of the two plates is received. It is also beneficial if the bore is threaded and the plug is screwed into the bore.

To produce a torsion spring device in a particularly simple and efficient manner, the invention provides a preferred method, which is characterized in that a composite, generally cylindrical unit, consisting of an outer, rigid cylinder, which surrounds an elastomeric cylinder and is fixedly connected thereto , which in turn surrounds and is firmly connected to an inner, rigid cylinder, is produced in such a way that axially extending lugs projecting laterally outwards are formed on the outer, rigid cylinder, that in the inner, rigid cylinder axially extending mounting holes are opposed to a » axial reference plane, which is perpendicular to an axial plane passing through the lugs on the opposite sides of the outer rigid cylinder, may be provided offset by a predetermined angle, so that afterwards the assembled unit according to a cross perpendicular to its axial center line plane is severed, whereby two subunits are obtained, one of which is turned around in the axial plane, so that its originally free end face comes to lie adjacent to the other subunit at its separating end, the lugs being aligned with one another, but the mounting holes being angularly offset from one another are that then the lugs are held against rotation on the subunits and are mounted on the two free outer axial ends of the two subunits around assembly parts, which are then rotated with the corresponding inner cylinders of the subunits in opposite directions until they are aligned with each other, whereby the elastomeric cylinders of the subunits are rotationally biased in opposite circumferential directions.

With regard to favorable compression preload values, it has proven advantageous if d »angular offset is approximately 10 °.

Furthermore, a simple rotation lock of the subunits »can be achieved if the lugs are held against rotation by being received and locked in slots in a clamping part.

The invention is explained in more detail below on the basis of preferred exemplary embodiments shown in the drawing. 1 is a perspective view of a stand with a shield shown broken off and held in an essentially upright orientation; Fig. 2 is an associated front view of this stand; Fig. 3 is a side view of this stand; Fig. 4 is a cross-sectional view taken along the line (4-4) in Fig. 2, on a larger scale, for better illustration of its torsion spring suspension; Fig. 5 is a front view of part of a stand with a modified torsion spring suspension; Fig. 6 is a cross section along the line (6-6) in Fig. 5; FIG. 7 in a partial view similar to FIG. 5 another embodiment; Fig. 8 is a sectional view taken along the line (10-10) in Fig. 9; 11 is a partial front view according to another embodiment; FIG. 12 is a partial side view of the stand according to FIG. 11; FIG. 13 is a partial front view of yet another stand, which is similar to that of FIG. 11, but with a slightly modified torsion spring suspension; FIG. 14 is a partial side view of the stand shown in FIG. 13; 15A to 15C are successive stages in the manufacture of a torsion spring suspension according to a further embodiment, which is illustrated in its final form in FIGS. 16A to 17; 16A is a partial side view of the torsion spring suspension according to FIGS. 15A to 17 before the attachment of a shield; 16B is a view similar to FIG. 16A, but after a label has been attached; Fig. 17 is a partial front view similar to that of Fig. 4, but illustrating the embodiment of Figs. 15A to 16B after the shield has been applied; 18 is a partial front view of a further embodiment, with a single, one-piece holder for attaching the sign; Fig. 19 is a sectional view taken along the line (19-19) in Fig. 18; 20 is a perspective view of another stand with a torsion spring suspension; FIG. 21 shows a side view of the torsion spring suspension of the stand according to FIG. 20 on an enlarged scale; Fig. 22 is a sectional view of this »torsion spring suspension along the line (22-22) in Fig. 21; 23 is a partially cutaway front view of another embodiment of a torsion spring suspension; 24 is a partially cut side view -4-

AT 392 855 B of the embodiment according to FIG. 23; 25 shows a perspective view of a further stand with a torsion spring suspension for the resilient attachment of a broken-off illustrated sign carrier on a frame; Fig. 26 is a perspective view of yet another erector, with a modified torsion spring suspension; 27 shows a partially broken side view of the torsion spring suspension of the stand according to FIG. 26 on an enlarged scale; 28 shows a sectional illustration along the line (28-28) in FIG. 27, the torsion spring being visible in a top view or a horizontal section; and FIG. 29 is a partial plan view, partly in section, of a modified embodiment of the end part of the torsion spring suspension shown in FIG. 28.

According to FIG. 1, a stand (10) carries a sign, a sign carrier, frame, a billboard or the like (12) (hereinafter simply called a sign for the sake of simplicity) in an essentially upright position relative to a frame (14 ), which has one or more feet (16) lying on the floor or another surface. The stand (10) also contains two holders (18) for supporting the shield (12) and a torsion spring suspension (20), which enables the pivoting of the shield (12) relative to the frame (14) from the upright position shown, as with the Arrows (22) (cf. in addition to FIG. 1 also FIG. 3) is illustrated.

As shown in FIGS. 1 to 4, the frame (14) contains a bracket (24) on which the feet (16) are fastened, for example by bolts or pins (26). The bracket (24) or a comparable bracket or support part can be of conventional design per se and is connected to the holders (18) via the torsion spring suspension (20), as will be explained in detail below. It should be mentioned here that other frame designs are of course also possible, in particular also those which are designed for fastening to a wall, to a column or to a stand or to other constructions.

The brackets (18) may be connected to the shield (12) (including any type of information, advertising, or notice board) by any suitable construction known in the art, such as two mounting brackets (28), for example 1 to 4 are shown. The holders (18) preferably each have a generally U-shaped cross section, wherein they have two U-legs (44) projecting downwards and a crossbar serving as a fastening plate (45), as can be seen in particular from FIGS. 2 and 3.

The torsion spring suspension (20) has, as a torsion spring, an elastomer body (30) (FIG. 4) which, for example, has a hollow cylindrical shape, the inner circumferential surface being fixedly connected or bound to an inner sleeve or rod (32), and the outer lateral surface being fixedly connected to an outer sleeve (34) or bound to the latter. The inner sleeve (32) is, for example, hollow-cylindrical, but can also be a component with a full cross-section, with any cross-sectional shape depending on the cross-sectional shape of the inner circumferential surface of the elastomer body (30). The elastomer body (30) and the other elastomer bodies to be described below consist of a vulcanized rubber or an elastomeric polymer with a suitable hardness, spring constant and other properties, all of which are determined depending on the application, for example the size of the shield to be held can be.

The inner sleeve (32) is fastened, for example, to the fastening plates (45) of the holders (18) with the aid of bolts (38) which are screwed into threaded attachments (35). Similarly, the outer sleeve (34) is fixed to the frame bracket (24) in any known manner, for example with the aid of bolts (36). In the assembled state, the torsion spring suspension (20) holds the shield (12) in the generally upright rest position mentioned, but a resilient deflection or pivoting of the shield (12) about a generally laterally extending torsion spring axis (40), according to the arrows (22) 1 and 3, is made possible.

In order to increase the service life of the elastomer body (30) in the event of cyclic loads from wind forces, the elastomer body (30) is preferably prestressed by being compressed in a generally radial inward direction relative to the torsion spring axis (40) as well as axially along the torsion spring axis (40) and in other directions . Such pre-tensioning of the elastomer body (30) is preferably carried out after it has been bound to the inner and outer sleeves (32 and 34), namely during the assembly of the torsion spring suspension (20). For this purpose, the outer sleeve (34) has, for example, a slot or gap (42) which extends axially along its length and a bending or contraction of the outer sleeve (34) in the circumferential direction (via an arc corresponding to 1 ° to 3 °) in the position shown in Fig. 4 allows when the outer sleeve (34) by means of the bolts (36) is attached to the bracket (24). The procedure is such that first one side of the outer sleeve (34) is attached to the frame (14) and then the other side of the outer sleeve (34) is rotated or bent into the position shown in FIG. 4 to the elastomer body (30th ) to compress between the inner sleeve (32) and the compressed outer sleeve (34).

In order to limit the pivoting deflection of the shield (12) and to avoid overstressing the elastomer body (30), the rotational deflection of the elastomer body (30) is preferably limited by a stop (46) which, for. B. is attached to the outer sleeve (40) The stop (46) extends in the axial direction away from the outer sleeve (34) and is arranged such that it with one of the U-legs (44) or the mounting plate (45th ) of the cross-sectionally U-shaped holder (18) engages when the elastomer body (30) rotates to a predetermined extent, which is a -5-

AT 392 855 B corresponds to the preselected maximum deflection angle of the shield (12) in the direction of the arrows (22)

For example, the arrangement is such that the maximum angle of rotation of the elastomer body (30) a rotation of the inner sleeve (32) about the torsion spring axis (40) by approximately 45 ° in one direction or the other, as indicated by the arrows (22), corresponds to what is crucial for the long life and durability of the elastomer body (30) in order to avoid overstressing the elastomeric material during cyclical loading. This corresponds to a maximum pivoting angle of the shield (12) of approximately 55 ° in each of the two pivoting directions indicated by the arrows (22), the difference of 10 ° between the rotation of the elastomer body (30) and the pivoting of the shield (12) the existing flexibility of the other assembled components of the stand or stand (10) (excluding the elastomer body (30)) is due to this extent of deflection, as has been shown, leads to a favorable change in the force vectors in the shield and stand, so that The shield and the stand are stable »'and are less likely to tip over in strong winds.

The aforementioned preferred maximum pivotability of 55 ° for the shield (12), which corresponds to a preferred maximum rotational deflection of 45 ° in both directions for the elastomer body (30) nonetheless enables good legibility and reflection of the shield (12), although the stand hardly tends to fall over in strong winds, with wind speeds of up to about 160 km / h. This was verified on a prototype of a stand with feet resting on a pad at locations approximately 60 cm laterally from a vertical plane that passed through the torsion spring axis (40), the stand with the Shield had a total height of 132 cm above the ground. The tests showed that the above-mentioned 45 ° deflection of the elastomer body (30) occurred at a force of approximately 0.37 to 0.39 N, which was directed in accordance with an effective vector which is approximately 90 cm above the ground at its point of attack would have. The aforementioned maximum swivel deflections can also be provided in other embodiments explained below.

5 and 6 illustrate an embodiment which is generally similar to that of FIGS. 1 to 4, with the exception that instead of the stop (46) other stop elements are provided, which are also in the exemplary embodiments to be described can be provided. 5 and 6, most of the components of the torsion spring suspension (120) correspond to those of the embodiment according to FIGS. 1 to 4, and the corresponding components are therefore designated by the corresponding reference numerals, but increased by the number 100, a relevant description of which has been given in the Detail can be omitted and only the differences should be explained. The same also applies to the exemplary embodiments to be described below.

5 and 6 instead of the stop (46) of the torsion spring suspension (20) according to FIGS. 1 to 4 provided triangular stop (146) consists of a projection in the form of a plate (148) with a cranked tip (150). 5, such a stop (146) is provided at each stimulating end of the elastomer body (130). For example, the plates (148) are fastened to the frame bracket (124), the cranked tips (150) being arranged in an axially offset position in which they can be attached to each of the U-legs (144) or to the fastening plates (145) Engage holder (118) when the elastomer body (130) is deflected to the maximum extent mentioned above. Otherwise, the design and function of the stand (110) is essentially the same as that of the stand (10) according to FIGS. 1 to 4.

A further, similar embodiment is illustrated in FIGS. 7 and 8, the components corresponding to FIGS. 1 to 4 being provided with the same reference numerals, increased by the number 200. 7 and 8, in contrast to the previously described embodiments, the torsion spring suspension (220) has an assembly rod in the form of a sleeve or rod (238) with a hexagonal cross section, hereinafter simply referred to as a hexagon element, which extends in the axial direction through an inner sleeve (232) and is non-rotatably connected thereto. The inner sleeve (232) in turn has a corresponding hexagonal opening (249) which extends in the axial direction and receives the hexagon element (238) and holds it in a rotationally fixed manner. The hexagon element (238) is preferably fixedly connected at one end to at least one of the fastening plates (245) of the holder (218), e.g. B. by welding, as illustrated in FIG. 7 at (247), the opposite end either extending through a hexagonal opening (251) in the other fastening plate (245) or being firmly connected to it.

Although the stop (246) shown in FIGS. 7 and 8 corresponds to the stop (146) according to FIGS. 5 and 6, the stop (46) d »the spring suspension (20) according to FIGS. 1 to 4 could of course also be used instead the torsion spring suspension (220) according to FIGS. 7 and 8 can be used. Of course, instead of the described hexagonal cross-section of the element (238) and the openings and (251), other polygonal or generally non-circular shapes could be provided, which ensure a corresponding rotationally fixed connection of the individual parts to one another.

FIGS. 9 and 10 again illustrate a similar torsion spring suspension (320) of a stand (310), corresponding components being identified with the same reference numbers, but here increased by the number 300, compared to the embodiment from FIGS. 1 to 4 . In the torsion spring suspension (320) according to FIGS. 9 and 10, two elastomer bodies (330 and 331) are in the rotation suspension (320) -6-

AT 392 855 B is provided, the outer elastomer body (330) being firmly connected to or bound to the outer jacket surface by an outer sleeve (334) and essentially surrounding an intermediate sleeve (333) in which the inner elastomer body (331) and the inner sleeve (332) are arranged. The inner elastomer body (331) is fixedly connected to or bound to the inner sleeve (332) and the intermediate sleeve (333), and the intermediate sleeve is in turn firmly connected to the outer elastomer body (330) or bound to the inner surface thereof.

The outer elastomer body (330) preferably consists of an elastomeric material that is softer and therefore has a lower spring constant with respect to twisting than the inner elastomer body (331). The two elastomer bodies (331 and 330) work essentially "in series", the inner elastomer body (331) with the higher spring constant experiencing little or no rotational deflection in weak winds. With increasing (wind) forces on the shield (312) or the stand (320), both elastomer bodies (330, 331) are deflected to prevent the stand from tipping over. With such a design, the sign is not pivoted so much with smaller wind forces, and the durability of the torsion spring suspension (320) is increased without the “wind resistance” of the stand being significantly impaired.

9 and 10, for the sake of clarity, no stops have been illustrated, but the torsion spring suspension (320) of the erector (310) can of course be used with the stop (46) according to FIGS. 1 to 4 or the stop (146) according to FIG. 5 and 6 can be provided. Also, the softer elastomer body could be placed inside instead of outside, and accordingly the harder elastomer body (with the higher spring constant) could be placed outside instead as shown, i.e. H. the inner elastomer body could be softer and have a lower spring constant than the outer elastomer body.

11 and 12 illustrate a design of a torsion spring suspension (420) of a stand-up device (410) which is similar to the exemplary embodiments according to FIGS. 1 to 8, corresponding elements being denoted by the same reference numerals, but increased by the number 400. 11 and 12, however, the shield (412) is connected to the outer sleeve (434), whereas the frame (414) is connected to the inner sleeve (432). With this arrangement, the holder (s) (418) can be attached directly to the shield (412), as shown in Figs. 11 and 12, and they can include spaced legs (423), e.g. B. are fastened by bolts (421) to the outer sleeve (434). The frame (414) contains leg attachment members (424), preferably those which allow the legs to be folded up, and which are attached to the inner sleeve (432), for example by means of a fastening plate (429), fastening brackets (427) and bolts (438) can be. Although in the embodiment according to FIGS. 11 and 12 a &quot; reverse &quot; Structure is provided, but the torsion spring suspension (420) works very similar to the embodiments described with reference to FIGS. 1 to 8, whereby the stand (410) according to FIGS. 11 and 12 may be suitable for certain shield configurations or for connection to a stand or of a column or another vertical component via the torsion spring suspension (420) is more suitable. Of course, the double arrangement described with reference to FIGS. 9 and 10 with a soft and a hard elastomer body could also be provided for the torsion spring suspension (420) according to FIGS. 11 and 12.

Yet another embodiment is illustrated in Figs. 13 and 14, wherein the stand (510) shown therein is generally similar to the stand (410) shown in Figs. 11 and 12 except that the frame (514) with the torsion spring suspension (520) is connected via a hexagonal sleeve or rod (538) which is generally similar to the hexagonal element (238) according to FIGS. 7 and 8. In order to hold the hexagon element (538) in the fastening brackets (527) in a rotationally fixed manner, set screws (552) or other suitable bolts or similar fastening means are screwed into threaded openings (559) in the fastening brackets (527). The hexagon element (538) is in turn received in a hexagonal opening (549) in the inner sleeve (532) and held in a rotationally fixed manner. Similar to the exemplary embodiment explained above with reference to FIGS. 7 and 8, in the exemplary embodiment according to FIGS. 13 and 14 the hexagonal element (538) and the hexagonal openings (549) etc. can have other mutually complementary polygonal shapes in order to prevent rotation against one another to reach.

In the embodiment shown in FIGS. 15A, 15B, 15C, 16A, 16B and 17, the torsion spring suspension contains two elastomer bodies which are &quot; parallel &quot; work with each other and in opposite rotation or. Circumferential directions are biased by twisting. Components corresponding to certain components of the previously described embodiments are provided with the same reference numbers, in comparison to FIGS. 1 to 4 increased by the number 600.

15A to 15C illustrate the essential successive steps in the manufacture of the torsion spring suspension (620) with prestressing, as shown in FIGS. 16A to 17 in connection with the rest of the stand (610). 15A, an inner sleeve (632) with fastening lugs (635) is fixedly connected to the inner lateral surface of a generally cylindrical elastomer body (630) or bound to the latter, and the elastomer body (630) in turn is fixed to the outer lateral surface Connected inside or bound to an outer sleeve (634). This composite unit is substantially similar to the unit with the inner sleeve (32), the elastomer body (30) and the outer sleeve (34) according to FIGS. 1 to 4, with the exception that the outer sleeve (634) with two in axial distance -7-

AT 392 855 B is provided with lugs (660) on one side, as shown in FIG. 15A, and two similar lugs (661), axially spaced apart, on the opposite side. The tabs (661) are not visible in FIGS. ISA and 15B, but their function results from the following explanation in connection with FIG. 15C. 5B. As shown in FIG. 15B, the assembly of FIG. 15A is cut apart or otherwise divided or separated, according to a central transverse plane that is perpendicular to the axial center line or torsion spring axis (640) of the assembled unit. This makes two receive separate units, the one subunit with an outer sleeve (634a), an elastomer body (630a) and an inner sleeve (632a), and the other subunit with the outer sleeve (634b), the elastomer body (630b) and the 10 inner sleeve (632b). It is important that the lugs (635a and 635b) according to FIG. 1SB continue to be aligned circumferentially at the same angle (670) (preferably approximately 10 °) relative to a vertical plane (641) which runs through the torsion spring axis (640) as before in the state of FIG. 15A before the assembled assembly has been divided.

In the situation according to FIG. 15C, the one subunit was rotated by 180 °, so that its originally free end (corresponding to an end face of the combined structural unit according to FIG. 15A) is now adjacent to that by the

Parts obtained end of the other subunit is present. As a result, the lugs (635a) lie on the opposite side along a line at the angle (670) with respect to the vertical plane (641) which runs through the center line or torsion spring axis (640). Accordingly, one of the lugs (661a) that was previously on the opposite side of the outer sleeve (634a) (and was not visible in FIGS. 15A and 15B 20) is now also visible in FIG. 15C, whereas the lug (660a) is shown in FIG 15C is now not visible due to the described twisting of this subunit

In Fig. 16A, the separated sub-assemblies of Figs. 15A to 15C were butted together (as shown in Fig. 15C) and attached to the frame (614) in a manner similar to that described above with reference to Fig 1 to 4 has been explained. 16A, however, the lugs 25 (635a) on the inner sleeve (632a) are not circumferentially aligned with the corresponding lugs (636b) on the inner sleeve (632b), i. h each pair of lugs (635a, 635b) is offset in opposite circumferential directions by the aforementioned angle (670) relative to the vertical plane (641) through the center line or torsion spring axis (640)

However, as can be seen from Fig. 16B, the lugs (635a and 635b) when the holders (618) 30 (see Fig. 17) on the shield (612) and on the inner sleeves (632a and 632b) by means of the Bolts (638) and mounting plates (645) are fastened in pairs in the circumferential direction towards each other via the angles (670) so that they lie in the vertical plane (641) and are aligned with one another. Such a rotation in the circumferential direction relative to the fixed outer cylinder (634a or 634b) and the attachment of a fastening part in the form of a clamp (664) (see also FIG. 17) prestresses the elastomer bodies (630a and 35 630b) relative to one another.

Such a twisting bias of the two structural units shown in FIGS. 15B and 15C enables the elastomer bodies (630a and 630b) to work in parallel with one another, as mentioned, when they are deflected while twisting. This arrangement means that at low to medium wind forces, one elastomer body (630a or 630b) is relaxed or relieved by twisting, while the other 40 elastomer body (630b or 630a) is additionally loaded. With increasing wind forces, however, both elastomer bodies (630a, 630b) are deflected up to the predetermined maximum twist angles.

16A to 17 best show how the outer sleeve (634a or 634b) is held in a rotationally fixed manner with respect to the fastening clamp (664). The radially projecting lugs (660a and 660b) and the opposite lugs (661a and 661b) are received and locked within slots (666) on opposite 45 sides of the fastening clamp (664). Furthermore, if the fastening clamp (664) is firmly connected to the frame bracket (624) with the aid of the bolts (636), the elastomer bodies (630a and 630b) can be prestressed under compression, as explained above in connection with FIGS. 1 to 4 due to the axially extending slots (642) (or (642b)). Furthermore, although no 50 stops are illustrated in FIGS. 16A to 17 for reasons of a better overview, stops similar to those according to FIGS. 1 to 4 or FIGS. 5 and 6 can advantageously be incorporated into FIG

Construction of the stand (610) can be included in order to limit or fix the maximum rotational deflection of the elastomer bodies (630a and 630b) according to the selected maximum deflection of the shield (612).

18 and 19 illustrate a particularly preferred embodiment, which is similar in many respects 55 to the exemplary embodiments described above, and in which therefore the corresponding components are again provided with the same reference numbers, with the number 7 in front of the hundreds .

The stand (710) shown in FIGS. 18 and 19 has a single, one-piece holder (718) with a generally U-shaped cross section, with legs (744) projecting downwards. This one-piece holder (718) is with a modified outer sleeve (734), for. B. via bolts (736), firmly connected. The 60 outer sleeve (734) is fixedly connected to or bound to an elastomer body (730) on the inside, and this elastomer body (730) is in turn firmly connected to or bound to an inner sleeve (732). Furthermore, the inner sleeve (732) is firmly connected to the brackets (724) of the frame (714). -8th-

AT 392 855 B

The frame brackets (724) are preferably designed such that their sides (725) protrude as a stop into the path of the legs (744) of the holder (718) and come into engagement with the latter when the elastomer body (730) rotates, whereby the turning deflection is limited to the predetermined deflection angles, as explained above. Alternatively, stops similar to the stops (46 or 146) according to FIGS. 1 to 4 or FIGS. 5 and 6 can be used for this purpose.

The design according to FIGS. 18 and 19 is particularly preferred in many applications because its manufacture and assembly are particularly simple and economical due to the one-piece design of the holder (718). Of course, in the embodiment according to FIGS. 18 and 19, a modification can be made without difficulty in that the one-piece holder (718) is connected to the inner sleeve (732) (e.g. by means of suitable fastening plates between the legs (744)), whereby the frame (714) is connected to the outer sleeve (734), similar to the case in the exemplary embodiments already explained above.

Finally, FIGS. 20 to 29 illustrate some embodiments that are somewhat modified in various respects. 20 shows a poster stand (810) with an upright frame structure, an upright support rod being provided as the holder (811), which can be rectangular or tubular. The information carrier of the stand (810) can also have both a board and a frame structure here, in order to, for. B. to place an advertising poster, billboard, sign, etc.

The frame shown has a U-shaped bracket (813) with two vertically arranged plates (814) and a base plate (815) which connects the vertical plates (814) to one another. Such plates can represent a single U-profile piece. A plurality of horizontally projecting legs (816) are connected to the base plate (815) in a manner known per se, in order to enable them to be set up on the floor.

The torsion spring suspension (820) shown in more detail in FIGS. 21 and 22 contains a cylindrical shaft part or a sleeve (821) with a keyway (822) which extends along its inner bore (823). A mounting rod (825) with a keyway for receiving a key (826) is attached within the bore (823) in order to connect it to the sleeve (821). The respective ends of the mounting bar (825) are attached to the vertically arranged plates (814) by separate wedges or other suitable means.

A generally cylindrical outer housing or sleeve (830) is provided with two outwardly extending legs (831, 832) for connecting the torsion spring suspension (820) to the actual billboard, the attachment being described in more detail below. The cylindrical housing part (830) is a tubular or jacket-like shell with a gap (834) which is formed on the upper side between the legs (831 and 832). The legs (831 and 832) each have two bolt holes aligned with each other.

A sleeve-shaped or ring-shaped elastomer body (835) is molded and vulcanized in the space between the inner sleeve (821) and the cylindrical housing (830), preferably using a suitable rubber / metal adhesive and by compression. During the molding process, the rubber fills the entire space between the sleeve (821) and the housing (830) and is firmly bonded to these elements.

After attaching the ends of the assembly rod (825) to the front consoles or vertically arranged plates (814), the vertical support rod (811) is inserted between the legs (831 and 832) in such a way that the aligned bolt holes in the legs (831 and 832) are aligned with holes (836 and 838) in the support rod (811) to receive bolts (839 and 840) and to connect the torsion spring to the billboard or the like. The housing (830) with its slotted shape itself serves as a clamp for attaching other components or holders to facilitate their function as part of the torsion spring suspension. Such a slotted sleeve or housing design helps to relieve the shrinking stress on the sleeve-shaped elastomer body (835) and enables the rubber to be compressed in a controlled manner, thereby delaying fatigue and thus achieving a longer service life.

In operation, the billboard is normally biased into the upright position by the torsion spring suspension (820). The support rod (811) is clamped by the legs (831 and 832) of the torsion spring suspension (820). When an external force is exerted on the billboard, the billboard will also move, the deflection movement being illustrated by dashed lines in FIG. 21, and this deflection movement will exert a torsional stress in the elastomer body (835), the radially innermost surface of which is through the sleeve (821) and their wedge connection with the assembly rod (825) is held against twisting. As soon as the external forces cease, the billboard returns to its normal vertical position according to FIG. 20 due to the action of the torsion spring suspension (820).

A modification of the design according to FIGS. 20 to 22 is illustrated in FIGS. 23 and 24, wherein the torsion spring suspension is generally designated (842) therein. The torsion spring suspension (842) has a cylindrical housing or an outer sleeve (843) with two legs (844 and 845) projecting outwards. These legs (844 and 845) are considerably shorter in comparison to the legs (831 and 832) according to FIGS. 20 to 22, and they are excepted at (846 and 847) in order to have two projections (848 and . 849) of a mounting bracket (850). The console (850) has two vertically arranged side plates (851 and 852) which are separated by a horizontally extending section (853) -9-

AT 392 855 B are interconnected. The console (850) is pushed into its position shown when the legs (844 and 845) of the housing (843) are moved towards each other, i. H. are pressed together, only then being able to insert the projections (848 and 849) into the grooves (846 and 847) of the legs (844 and 845). 5 The plates (851 and 852) each have two vertically spaced holes, which are to be aligned with holes in the support rod (811) and receive bolts (854 and 855) to hold the poster board and its support rod (811 ) on the torsion spring suspension (842).

The inside of the outer housing (843) of the torsion spring suspension (842) is bound to an elastomer body in the form of a rubber sleeve (857), which is similar to the rubber sleeve (835) according to 10 FIGS. 20 to 22 and, in turn, with its inner lateral surface to one inner metal sleeve (858) is bound. The inner sleeve (858) has an outer surface which is circular in cross-section and an inner non-circular profile which defines a polygonal opening (860). An inner shaft part or assembly rod (862) with a hexagonal cross section is frictionally received in the opening (860) and in hexagonal openings (863 and 864) in side plates (865 and 866) of a U-shaped angle or bracket (867) 15 provided as assembly parts . The shaft part (862) is thus connected to the side plates (865 and 866). The shaft portion (862) could be splined to or otherwise connected to the side plates (865 and 866) to prevent axial movement and rotational movement of the shaft portion (862). The bracket (867) is connected to a plurality of base feet (868) in a suitable manner.

After the legs (844 and 845) with the fastening bracket 20 (850) have been attached to the torsion spring suspension (842), the mounting rod (811) is fastened in a similar manner as previously with reference to FIG

20 to 22 are described. When the elastomer body (857) is pressurized by compressing the legs (844 and 845), the elastomer body hardly gets tired, and the service life of the torsion spring suspension is thus significantly extended.

According to FIG. 25, a poster or announcement board of a stand (870) is connected to a torsion spring suspension (878) via two holders (871 and 872) projecting downwards. The holders (871 and 872) which act as assembly parts have polygonal openings which receive a wavy inner shaft part or assembly rod (875) which is polygonal in cross section. The shaft part (875) is frictionally received in the inner polygonal bore of an inner sleeve (876) of the torsion spring suspension (878). The cylindrical outer surface of this sleeve (876) is bound to a sleeve-shaped or ring-shaped 30 elastomer body (879), which is the spring element of the torsion spring suspension (878). The outer surface of the elatom body (879) is to the inner cylindrical surface of an outer housing or an outer Bound sleeve (880), which has a gap on its underside as shown in Fig. 25, which is similar embodiments previously described. The elastomer body (879) is molded and vulcanized in the space between the inner sleeve (876) and the cylindrical housing (880), preferably 35 using a suitable rubber / metal adhesive and under compression. During this molding process, the rubber fills the entire space between the inner sleeve (876) and the housing (880) and is firmly bonded to these parts.

The outer housing (880) has two outwardly projecting legs (881 and 882) in order to fasten the torsion spring suspension (878) to a raised support part (885) to which a plurality of feet (886) 40 are connected. The support member (885) has two vertically aligned bores which are to be aligned with corresponding bores in the legs (881 and 882) in order to receive bolts (883 and 884) for connecting these components, and when tightening the bolts in turn one Compression force is exerted on the rubber of the elastomer body (879) so as to extend the life of this spring element. 45 In the exemplary embodiment according to FIGS. 26 to 29, a poster board, announcement board, a frame or similar device (890) is connected in a suitable manner to a holder (891) which projects downwards as a support. This holder (891) is connected to two spaced apart, outwardly projecting legs (882 and 883) of an outer housing or an outer sleeve (895). The legs (892 and 893, respectively) have suitable openings in alignment with openings (896 and 897) in the holder (891) to receive bolts (898) for their connection to the holder (891). A ring-shaped elastomer body (900) is suitably bound with its outer surface to the inner lateral surface of the outer sleeve (895), similarly to the previously described embodiments. The inner lateral surface of the annular elastomer body (900) is suitably bound to the outer surface of an inner tubular metal sleeve (901) which has a flattened extension (902). 55 This torsion spring suspension is mounted in a frame with a U-shaped bracket (910), which has two vertically arranged plates (911) and a bottom plate (912) which connects the vertical plates (911) to one another. The plates can be joined together by a single Be U-shaped profile piece. A plurality of horizontally extending feet (914) are connected in a suitable manner to the base plate (912). For example, the feet can be welded on. One vertical plate (911) of the bracket (910) has a 60 slot (915) to receive the flattened extension (902) of the inner sleeve (901). The other vertical plate (911) of the bracket (910) has an opening (918) to receive a cylindrical portion (919) of a plug (920). The outer end portion of the plug (920) is friction locked in a -10-

Claims (30)

AT 392 855 B frontal bore (921) of the inner sleeve (901) on the opposite side of the flattened extension (902) received to hold the torsion spring on the U-shaped bracket (910) of the frame. Instead of the frictional fit, the end part of the bore (921) can also be provided with a thread, as indicated at (923) in Fig. 29, in order to receive a threaded plug (925) 5, which facilitates the connection of the torsion spring to the frame . The elastomeric body (900) is molded and vulcanized in the space between the inner sleeve (901) and the outer housing (895) and the housing (895) is formed with a gap along the legs (892 and 893). The elastomer body (900) is preferably vulcanized in the space between the inner sleeve (901) and the outer housing (895) again using a suitable rubber / metal adhesive and under compression. 10 During this molding process, the elastomeric material fills the entire space between the sleeve (901) and the housing (895) and is firmly bonded to these parts. It is possible to exchange individual construction details, for example with regard to the stops to limit the deflection movements or the attachment, among the various embodiments. Because the invention is not limited to the movable attachment of billboards, notice boards or the like 15 information carriers, it is rather applicable to other devices as far as comparable torsion spring suspensions are used there. 20 PATENT CLAIMS 25 1. Torsion spring suspension with at least one torsion spring for connecting a holder for e.g. B. signs or similar information or advertising media with a frame, the holder being resiliently pivotable relative to the frame from its rest position about the torsion spring axis, characterized in that the torsion spring by at least one elastomer body (30; 130; 230; 330, 331 ; 430; 530; 630a, 630b; 730; 30 835; 857; 879; 900) is formed, the elastomer body, for example by compression and / or twisting relative to the torsion spring axis (40; 140; 240; 340; 440; 540; 540; 640), is pretensioned or can be pretensioned during assembly and / or at least two elastomer bodies (330, 331) with different torsion spring constants are provided which are attached to one another and separated by an intermediate sleeve (333). 2. Torsion spring suspension according to claim 1, characterized in that the or the elastomer body (30; 130; 230; 330, 331; 430; 530; 630a, 630b; 730; 835; 857; 879; 900) annularly between one the connection to the holder or frame forming outer housing, preferably an outer sleeve (34; 134; 234; 334; 434; 542; 634a, 634b; 734; 830; 843; 880; 895) and an inner shaft part forming the connection to the frame or holder , preferably an inner sleeve (32; 132; 232; 332; 40 432; 532; 632a, 632b; 732; 821, 825; 858, 862; 876, 875; 901), attached and thus firmly connected. 3. torsion spring suspension according to claim 2, characterized in that the or the elastomer body (30; 130; 230; 330, 331; 430; 530; 630a, 630b; 730; 835; 857; 879; 900) between the 45 outer housing (34; 134; 234; 334; 434; 542; 634a, 634b; 734; 830; 843; 880; 895) and the inner shaft part (32; 132; 232; 332; 432; 532; 632a, 632b; 732; 821, 825; 858, 862; 876, 875; 901) is or are held radially compressed. 4. torsion spring suspension according to claim 3, characterized in that the outer housing (34; 134; 50 234; 434; 542; 634a, 634b; 734; 830; 843; 880; 895) split and in the assembled state by compressing the elastomer body ( 30; 130; 230; 430; 530; 630a, 630b; 730; 835; 857; 879; 900) is contracted to a narrower cross section. 5. torsion spring suspension according to claim 4, characterized in that the outer housing (830) 55 adjacent to the gap (834) has two spaced legs (831, 832), when connecting them, for example with the holder (811), the Elastomer body (835) is compressible. 6. Torsion spring suspension according to claim 5, characterized in that the distance between the legs (831, 832; 881, 882; 892, 893) in the relaxed state is greater than the width of one of the frame (885, 60 886), upwards extending support part (885) or the z. B. rod-shaped holder (811; 891) to compress the elastomer body (835; 879; 900) when the legs are connected to the support part or holder. -11- AT 392 855 B 7. torsion spring suspension according to claim 5 or 6, characterized in that the upstanding legs (844, 845) have grooves (846, 847) in which on a z. B. U-shaped mounting bracket (850) for the holder (811) provided projections (848, 849) protrude, whereby the elastomer body (857) is held compressed 8. torsion spring suspension according to one of claims 1 to 4, characterized in that of the nested elastomer body (330,331) the inner (331) has a higher spring constant than the outer (330) 9. torsion spring suspension according to one of claims 1 to 4, characterized in that at least one pair of elastomeric bodies (630a, 630b) is provided which are each fixedly connected to an associated inner sleeve (632a, 632b), which in turn is connected to one of two holders ( 618) is connected, the radially outer parts of the two elastomer bodies (630a, 630b) being firmly connected to the frame (614), and that the elastomer bodies (630a, 630b) are prestressed in opposite circumferential directions with respect to the torsion spring axis (640). 10. Torsion spring suspension according to claim 9, characterized in that with the radially outer part of each of the elastomer bodies (630a, 630b) an outer sleeve (634a, 634b) is fixedly connected to the frame (614). 11. Torsion spring suspension according to claim 9 or 10, characterized in that the two inner sleeves (632a, 632b) with the associated holders (618) in the state before assembly of the shield or the like (612) are rotated relative to each other with respect to the torsion spring axis (640) , wherein the inner sleeves and the holders are rotatable in the circumferential direction in a common radial orientation and can be fixed in this position when the shield or the like is fastened, as a result of which the elastomer bodies (630a, 630b) are prestressed in the opposite circumferential directions with respect to the torsion spring axis (640). 12. Torsion spring suspension according to claim 10 or 11, characterized in that the outer sleeves are held in place in the circumferential direction with the aid of one or more fastening parts (664) and are connected to the frame (614). 13. Torsion spring suspension according to claim 12, characterized by an at least partially surrounding the outer sleeves (632a, 632b), with the frame (614) fixedly connected fastening clamp (664), which has at least one laterally elongated opening (666) in which the outer sleeves (634a, 634b) attached lugs (661a, 660b and 661b, 660a) are received and held in the manner of a latch. 14. Torsion spring suspension according to one of claims 1 to 13, characterized in that at least one stop (46) for limiting the torsion spring movement of the elastomer body (30) is provided in a manner known per se. 15. Torsion spring suspension according to claim 14, characterized in that the stop (46) with one of the · sleeves (34) is connected and protrudes into the pivoting path of the holder (18) to the pivoting movement and thus the torsion spring movement of the elastomer body (30) limit. 16. Torsion spring suspension according to claim 15, characterized in that the stop (46) limits the torsion spring movement of the elastomer body (30) corresponding to a pivoting angle of the holder (18) of approximately 55 °. 17. Torsion spring suspension according to one of claims 2 to 16, characterized in that two holders (18; 318; 618) from the sleeve or sleeves (32; 332, 632a, 632b) to which they are attached , extend sideways away in opposite directions. 18. Torsion spring suspension according to claim 15 or 16 and claim 17, characterized in that each holder (18, 118) in cross section substantially U-shaped, with two spaced U-legs (44; 144), and the stop (46; 146 ) is designed as a projection projecting between the U-legs (44; 144) of the holder. 19. Torsion spring suspension according to claim 18, characterized in that the projection (146) is substantially triangular, the apex of the triangle being arranged between the U-legs (144) and the triangular sides being assigned to one leg as a stop on both sides of the apex. -12- AT 392 855 B 20. Torsion spring suspension according to one of claims 2 to 19, characterized in that with the inner sleeve (232; 821; 858; 876) a mounting rod (238; 825; 862; 875) accommodated therein is non-rotatably connected, for. B. is wedged. 21. Torsion spring suspension according to claim 20, characterized in that the opening (249) of the inner sleeve (232; 858; 876) and the mounting rod (238; 862; 875) have a mutually corresponding non-circular, in particular polygonal cross-section and are connected in a rotationally fixed manner . 22. Torsion spring suspension according to claim 20 or 21, characterized in that the mounting rod (238) with the or the holder (s) (218) is rotatably connected. 23. Torsion spring suspension according to claim 21 or 22, characterized in that the assembly rod (862; 875) having a polygonal cross-section has the ends in corresponding polygonal openings (863, 864) in assembly parts (865, 866; 871, 872) is included. 24. Torsion spring suspension according to one of claims 2 to 8 or 14 to 16, characterized in that the with one of the sleeves (732) connected hold »(718) is integrally formed. 25. Torsion spring suspension according to one of claims 2 to 19, characterized in that the part connected to the frame, for example the inner sleeve (901), is provided with a flattened end (902) which in a slot (915) in one of two upright plates (911) which belong to the frame and are provided at a distance from one another 26. Torsion spring suspension after opening 25, characterized in that the inner sleeve (901) at the flattened end (902) opposite end has a bore (921) in which a plug (920) connected to the other of the two plates (911) is included 27. Torsion spring suspension according to claim 26, characterized in that the bore (921) is provided with a thread (923) and the plug (925) is screwed into the bore 28. A method for producing a torsion spring device, characterized in that a composite, generally cylindrical unit, consisting of an outer, rigid cylinder which surrounds and is fixedly connected to an elastomeric cylinder, which in turn surrounds and with an inner, rigid cylinder is firmly connected, it is produced that axially extending lugs projecting laterally outwards are formed on the outer, rigid cylinder, that axially extending mounting holes extend in the inner, rigid cylinder with respect to an axial reference plane which is perpendicular to one through the lugs on the opposite Sides of the outer rigid cylindrical axial plane is offset by a predetermined angle that the assembled unit is then cut according to a transverse plane perpendicular to its axial center line, whereby two sub-units are obtained, one of which in de r is rotated around the axial plane, so that its originally free end face comes to lie adjacent to the other subunit at its separating end, the lugs being aligned with one another, but the mounting holes being offset angularly with respect to one another, so that the lugs are held against rotation on the subunits and on the two free outer axial ends of the two sub-assemblies are assembled, which are then rotated with the corresponding inner cylinders of the sub-units in opposite directions until they are aligned with each other, whereby the elastomeric cylinders of the sub-units are rotationally biased in opposite circumferential directions (Fig. 15A to 15C, Figs. 16A, 16B). 29. The method according to claim 28, characterized in that the angular offset is approximately 10 ° 30. The method according to claim 28 or 29, characterized in that the lugs are held in a rotationally secure manner in that they are received and locked in slots in a clamping part. Including 12 sheets of drawings -13-