DE7029916U - SWIVELING STAIR. - Google Patents

Description

Patent attorney DIPL. ~ INQ. BERTHOLD SCHMID

STUTTQART S FA L B E N H E N N E N STR A S S E 17 TELEPHONE (0711) 708893

9237 B / bn

WiIh. Prank GmbH / 022 Leinielderi

Schv.'enkenrerroe

The invention relates to a swing staircase, in particular for attachment to leaks, the upper end of which can be pivoted to a ceiling opening or in the position of use one is stored in this trunk box used. In general, the number of subordinates on these stairs is very high simply constructed and they resemble their construction according to the

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Fish strap fittings for doors or piano hinges, whereby they are of course much more powerful than the latter, nevertheless their stability is in many Cases not sufficient and not able to cope with the stresses that arise. The straps that lay flat bend often under the given load, which means that the stairs can no longer be swung back properly. Since the fittings are let into the stairs and possibly also the staircase, there are very wide recesses necessary with naturally strong weakening of the affected parts.

The object of the present invention is therefore to these recesses and weaknesses on a kindestirass au, and also the stability of the hardware increase practically without changing the dimensions. In order to solve this problem, the mentioned one is used for a swinging staircase Art proposed according to the invention that each pivot bearing consists of two upright arranged flacli rods connected by a cross bolt. The section modulus of the Flat bars are larger in the upright arrangement than in the previous flat arrangement. Due to the vertical arrangement the bands are also Korarit: zit very flat, corresponding to their thickness ICuteG. zuE inlet off. With a side Attachment to the cheek can be entirely assured v; earth η. Be versions cit the ceiling opening closing The fitting can leak on this Lid ccer of the stairs can be attached, moreover it is at , any type of ochv: er-k stairs can be used, both with Folding as well as from Aus :: ieh-3chv; enktstreppen.

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According to one embodiment of the invention, each is stair-sided Roof bar on the side. attached to the vertical cheek surface. In another embodiment, each step is Pen-side flat bar embedded in the narrow side of the stair string.

The ceiling-side flat bar is in a development of the invention in the ceiling opening and / or the. Embedded staircases. Another embodiment of the invention provides to form the flat bar as a leg of a profile iron, in particular U, angle or T iron. When using a ! [- ^ ■ Rail can, if necessary, both U-legs to form the bearing used and the stair-side flat bar inserted between the U-legs. In the case of the angled rod, it is used an angle leg as a mounting flange, while Ue ^ - i \ ndare represents the storage bar. As already mentioned, the latter can also be formed by the gusset web of a T-profile.

The stair-side flat bar is sit on a swivel staircase Closing cover arranged below the stairs in another Embodiment Ger invention let into the upwardly facing surface of the lid.

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In the case of a swiveling staircase with Ireppenteilücke connected by folding joints, it is particularly useful that the ends of the Yrepenepiece facing each other sit with a kneeling safety device. are provided, wcbei a stair part piece a Plerbe and the other one engaging in the position of use of the stairs in it tooth, a bar or the like. and the tooth and / or the notch ir. "^ inrastrichtung elastic

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When it is opened, ie in the required position, the 7 ahn or the bar automatically engages in the associated Mit or Ke ^ ^v 3. The neighboring staircase sections are thus rigidly connected to one another in a certain sense, and this connection can be loosened with a strong jerk. During the engagement and disengagement movement, the tooth or the bar performs a pivoting movement with respect to the notch and, in addition, at least one of the parts must be shifted laterally by an amount corresponding to the height of the tooth. This lateral deflection should take place by elastic deflection or against the force of a return spring, so that the parts snap into place with one another as soon as they are aligned with one another. In a particularly preferred embodiment of the invention, the notch and the tooth are each arranged on a plate connected to the cheek of the respectively assigned stair part and / or the hinged joint. Another embodiment of the invention provides that the notch is incorporated into one half of the folding joint and the tooth or the like. on a rag, approach or the like. the other half of the hinged joint attached, in particular molded. The sweeping effort for this buckling protection is thus reduced to a lower level. There are no separate assembly costs.

The upper staircase end is connected according to a further Erfindungsnerkfcal with the ceiling opening or the stair case via at least one toggle lever, occupying an extended position in the position of use of the staircase and _üe in direction r Kückschv.-enkbewecunc offset laterally of the joint bearings of the staircase is located. Again, this is a security

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health facility that eiü. ----- ^v -----'----- ■ - ■ ---- ^ --- ■ + - ⁿ - - "■ - ■> ■ -r -..- ■> -.- .., - - ^ r of the upper part of the staircase or the entire staircase veri " ^: It automatically comes into action as soon as ¹ ^ .lic · Γι-eppe is in the position of use. The toggle lever which is in the extended position - there can also be several - oppose a rotational movement of the upper part of the staircase in the closing sense. If the stairs are to be swiveled back after being used up, the joint of the toggle lever must be brought out of its unstable position by means of a suitable coat, possibly by hand. As soon as the two knee joint legs enclose an angle deviating from 180 ° with one another, they can easily be moved against one another and thus no longer hinder the pivoting back of the upper part of the staircase or the pushed back or folded staircase. The buckling is preferably carried out in such a way that the hinge point is moved upwards first.

The toggle part attached to the ceiling opening or the staircase is a one-armed part in a further development of the invention and the other designed as a two-armed lever. The one protruding over the stair-side pivot bearing of the toggle lever The leg of the double-armed lever can be used as a handle for triggering from the unstable locking position. If you turn it towards the stairs, it gives way Joint pupJct of the knee lever upwards. Particularly beneficial In this context, it is the case that with a swinging staircase with a folding part of stairs the free lever arm of the z '.: eiar: ni £ en lever in the swivel range of the or the lower Part of stairs or. -stairs protrudes so that it can collapse when it is automatically actuated the stairs and thereby the swivel lock for the upper part of the Trepoeriteil is automatically canceled.

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'■' j a further feature of the invention is wenktreppe at a ^ sausgleich Each stair-side link end pivotally mounted on a eccentric and arranged each eccentric pin eccentrically to a rotatably in each stair string and axially displaceably and fixably mounted disc with guide bar for the weight, each Disc is provided with hooking elements for the cheek on its surface that can be pressed against the stair string. This is an easily adjustable and assemblable, inexpensive to manufacture and easy to use adjusting device for the mentioned steering rod. The latter usually also has the shape of two toggle levers arranged on the side of the stairs, with the device mentioned, both the angle of the two toggle arms and the / between the respective toggle arm and the stairs on the one hand or the ceiling on the other hand can be continuously adjusted in a range given by the eccentric adjusted. Since the link rod is usually spring-influenced, the eccentric adjustment or the pivoting of the toggle lever legs resulting therefrom can result in loading or unloading this spring or springs. By tightening a nut or other handle, the hooking elements can be pressed into the mostly soft wood of the stairs. To adjust, the clamping nut must be loosened and the washer removed from the stringer. To change the setting, the disc is then rotated and then pressed against the stringer again with the help of the handle or nut. Of course, the interlocking elements can also be brought into engagement with a counter-plate on the stringer, so that indentations into the stringer can be avoided. The disc is purposeful

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moderately robbed to form the hooking elements, corrugated, notched or formed in a similar way.

An exemplary embodiment of the invention is shown in the drawing. Show it:

Fig. 1 is an inventive swivel staircase in perspective Representation of the position of use,

Pig. 2 in an exploded view, also in perspective, the adjustment device for the handlebar linkage,

Fig. 3 one of the upper swiveling devices;. ^ - -er stairs, likewise shown in perspective.,

FIG. 4 shows a section along the line IV-IV of FIG. 5,

Fig. 5 each arranged between two stairway sections Buckling protection in plan view,

Fig. 6 is a schematic side view of the stairs when cut through Staircase and dash-dotted representation of the lower foldable part of the staircase.

In the illustrated embodiment, the pivoting staircase 1, which is designed as a folding staircase, is on a staircase 2 mounted, which is used in a correspondingly large, not shown opening in a ceiling. Hit help this So the stairs above the ceiling should be reached. As usual, the staircase is rectangular Fom and he v.-lrc at r.usanrenseklappter and in the direction of the

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Arrow 3 swiveled back stairs with the help of the cover 4 locked. In the embodiment, the pivoting staircase 1 consists of the upper part of the staircase 5> the Kitteleren stair section 6 and the lower one Section 7 · The individual sections are connected to one another via hinged bearings 8 and 9, respectively. The lower Stair section 7 in the direction of arrow 10 against the middle section 6 folded »while then both together in the direction; of the arrow 11 to the upper part of the staircase 5 be folded out.

The upper stair section 5 is fastened to the stair case 2 with the aid of the pivot bearing 12. At the same time it is also firmly connected to the closure cover 4, so that when the folded staircase is pivoted back, the closure cover 4 is automatically brought into the closed position. Fig. Shows one of these pivot bearings 12 on an enlarged scale. It will be contrary to the. Previously known designs standing on edge, that is, in the position shown, installed and consists of the staircase sides. Flat bar 13, the ceiling-side rIac .. bar 14, which was bent to form an angle. The straight leg is designated by 15. Of course, an angle profile can also be used for this directly. The two flat bars 13 and 14 are pivotally connected to one another via the cross bolt 16. The bores 17 are used for fastening to the ladder, while the bores 18 are used for the contour of the part 14. As FIG. 1 shows, the stair-side flat bar 13 is placed laterally on the stair stringer 19, ie the cheek is not weakened by any recesses. On the other hand, however, it is the case that only a very narrow slot is necessary to let the flat bar on the staircase side into the staircase, in contrast

crn of the state of technology.

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The stair sections 5 and 6 or 6 and 7 are, as already mentioned, connected to each other in a pivotable manner. If the staircase stands up on the ground, it is of course a rigid structure. However, if it is pivoted in the direction of arrow 3 in the unloaded state, parts 6 and 7 fold apart in the exemplary embodiment. Such pivoting can occur, for example, if the weight compensation device that is usually built in has not been set exactly or has shifted over the course of time. In order to avoid this unintentional and also undesired folding up of the staircase sections, the buckling safeguards according to the invention have been attached. They consist of two screwed-on plates 20, 21, of which the lower 20 has a notch 22 in which a tooth 23 of the upper plate 21 engages. Folding down the lower stair part 7 against the upper stair part 8 is therefore only possible when the tooth 23 is disengaged. However, the weight of the lower part of the staircase 7 is not sufficient to pivot the plate end 25 with the tooth 23 in the direction of the arrow 24- and thereby to effect the notching. On the other hand, however, the dimensions and the penetration depth of the tooth 23 are chosen so that the buckling protection can be released with a strong jerk on the lower part of the staircase 7, with the plate end 25 then resiliently springing outwards connected to the folding bearings 9 or the upper folding bearings 8. Of course, the notch 22 can also be incorporated directly into the corresponding part of this folding bearing and it is also conceivable to form the flattenence 25 with the tooth 23 by a bent-out tongue of the upper bearing half of the folding bearing. This saves Kan separate contact work.

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The device according to the invention shown in FIG. 6 should also be an unintentional turning back ^ c ^ Prevent stairs in the direction of arrow 28. It consists of a toggle lever or toggle lever pair 29, which is shown in FIG Usage position of the stairs assumes a stretched position. Because of this stretched position, she resists a backward pivoting movement of the stairs as seen by arrow 28. Such a pivoting movement of the stairs is only possible if the toggle lever is moved out of its unstable position, which is drawn with thick lines. The kinked one Knee lever is shown in phantom. This device is of course only effective when it is in the direction of the backward pivoting movement 28 is attached laterally offset from the pivot bearing 12 of the stairs. The one on the staircase 2 pivotably articulated toggle lever part 30 is designed as a one-armed lever, while it is pivotable at the Staircase mounted lever 31 is a two-armed lever. The free lever arm 32 of the toggle lever part 31 serves as a release device. If it is swiveled clockwise, the hinge point 33 of the toggle lever moves counterclockwise up. The triggering movement can either be done by hand or, as shown in FIG. 6 with dash-dotted lines, can be carried out automatically by the folded stair section 6.

As already mentioned, this type of staircase is usually provided with a handlebar linkage 3 ^, 35 for weight compensation. The weight compensation is achieved with the aid of a spring mechanism 42 (not shown in detail). The one on the staircase End 36 of the handlebar 3h- is pivotable on an eccentric bolt 37 stored. The latter consists of a cylinder pin that

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is attached eccentrically to the disk 38 rotatable in the cheek 19. The disc 38 is fixed with a threaded bolt 39, the corresponding from aaileri in sxnc Hole in the stair stringers 19 is inserted. Washer 40 then rests on the inside of the stringer, which is acted upon axially by the wing nut 41.

The washer 38 is provided with teeth extending in the radial direction, which are sxch when the wing nut is tightened 41 dig into the wood of the outer surface of the stair string 19 and thus secure the disk 38 against twisting. Subsequently is the handlebar 34 from the outside on the pin 3? postponed. Should the eccentric pin 37 take a different position, whereby then of course the linkage 34, 35 and the spring mechanism 42 must be adjusted, the Scribe 38 brought out of engagement with the outer surface of the stair string 19 and then rotated about its axis 39. This as well as the subsequent reattachment is a matter of course an axial shift is necessary in each case. Of course, the gearing can or can be spoken in a very general way the interlocking element 43 instead of the stair string 19 as well with corresponding 7-hook elements of a separate counter disc cooperate. This can optionally consist of ketallic.

All of the features described and illustrated are essential to the invention.

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Claims (14)

Expectations 1. Sc h ν; e rikt repp ei especially for fastening to ceilings, whose upper end in the position of use can be pivoted to a ceiling opening or a staircase box inserted into this is mounted, characterized in that each pivot bearing (12) consists of two edgewise arranged through Elach bars (13, 14) connected by a cross bolt (18) consists. 2. Swiveling staircase according to claim 1, characterized in that that each stair-side flat bar (13) is attached to the side of the vertical cheek surface (19). 3 swiveling staircase according to claim 1, characterized in that that each stair-side flat bar (13) is embedded in the narrow side of the stair string (19). 4. Swivel staircase according to one or more of the preceding Claims, characterized in that the ceiling-side flat bar (14) into the ceiling opening and / or the staircase (2) is embedded. 5- swivel staircase according to claim 1 to 3> characterized in that the flat bar (14) on the corner as a leg a profile iron (14, 15), in particular U-, V / inlcel- or T-x.isens is designed. - 13 - 702991622.10.70 6. Swiveling stairs with arranged below the stairs Closure cover according to one or more of the preceding claims, characterized in that the * stair-side tflat bar (13) into the upward-facing one Surface of the cover (4) is embedded. 7. Difficult stairs with stair sections connected by folding joints, characterized in that the ends of the stair sections facing each other (5 »6 or 6.7) are provided with an anti-knock-out device, whereby one stair section (7) has a notch (22) and the other (&) one engaging in the position of use of the stairs in it tooth (23), a bar or the like. has and the tooth and / or the notch in the notch ■ ·. "· ■: ^^ elastically pivotable is or are. 8. Swiveling staircase according to claim 7i, characterized in that the notch (22) and the tooth (25) on each one with the cheek of the respectively assigned stair section and / or the folding joint (8, 9) connected plate (20, 21) are. 9 · Swiveling staircase according to claim 7 »characterized in that the notch (22) worked into one half of the folding joint (8, 9) and the tooth (23) or the like on a rag, Approach or the like. the other half of the hinged joint attached, in particular molded. 10. ßchwenktreppe, characterized in that the upper end of the staircase is connected to the ceiling opening or the 'staircase box {2) via at least one toggle lever (29) which assumes an extended position in the position of use of the stairs and displaces the Ittickschwenkbewegung in the direction of (28) laterally the pivot bearing (12) of the stairs is arranged. 11. Schwenlctreppe according to claim 10, characterized \ in that the toggle lever part (20) attached to the ceiling opening or the staircase box (2) is designed as a one-armed lever and the other (31) as a two-armed lever. 12. Swiveling staircase with folding partial stairs, according to claim 6, characterized in that the free lever arm (32) of the two-way lever (31) ifr ceu swivel range of the or the the lower part of the stairs (b) or stairs protrudes. 13- Swiveling staircase with a handlebar linkage for weight compensation, characterized in that each stair-side handlebar end (5 ^p o) is pivotably mounted on an E :: center bolt (37) and each eccentric bolt can be rotated eccentrically on one in each stringer (iy) and can be axially displaced. and fixably mounted disc (3S) is arranged, each disc being provided with interlocking elements (43) for the cheek on its surface that can be pressed against the stair stringer, 14. Swiveling staircase according to claim 13, characterized in that the disc (3S) roughened to form the interlocking elements, corrugated, notched or the like. is. 702991622.10.7O