DE2556093A1 - Storage cupboard with adjustable level compartments - has drawers raised or lowered by mechanical drive system with guide rods for drawer location - Google Patents

Abstract

The cupboard has compartments capable of being lifted or lowered, and drawers for drawings and files. the compartments at high level are moved after their withdrawal to a level suitable for the user. Rods fitted to the cupboard side walls using a chain or geared belt drive and are returned from there to their starting position. Individual or several compartments (2) are made to be lowered after their withdrawal from the cupboard (1) to an accessible height. They have guide rods which after use are returned to their starting position. Guide ledges are fitted which have threaded forks fitting into the guide rods during the withdrawal of the compartments.

Description

8011 Angeredinq -3

Herzog — Stephan-Weg 20

Cupboard with compartments that can be raised and lowered, in particular drawers for drawings, files and parts

The invention relates to a cabinet with compartments or drawers that can be raised and lowered, e.g. for drawings, files or parts, in which the high-lying compartments after being pulled out via bars attached to the side walls of the cabinet or without thread by means of a chain or toothed belt drive to a height accessible to the user and from can be brought back to their original position from here.

There are cabinets known in which high-lying compartments revolve like a paternoster or in which compartments after pulling out can be lowered or raised using external cables and special support bodies.

For example, the

German Patent No. 26 32 58, German Patent No. 35 78 68 and the German Offenlegungsschrift No. 23 44 640

Referenced.

These barriers are, for example, for wide drawers Cannot be used for drawings in large formats, as ropes stretch after prolonged use and become sufficiently accurate Do not guarantee guidance of the drawers. Furthermore, the visual impression of a closet is made possible by external ropes and supporting body disturbed if clear external forms are important

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is laying. Barriers in which the compartments resemble a paternoster run around, require a lot of space.

The object of the invention is to provide a cabinet of the type mentioned at the beginning Specify a type that allows compartments for any space that is adapted to the space on the smallest possible footprint To accommodate height and the transport device for lowering and lifting the compartments in the side walls behind them To arrange cladding.

To solve this problem, a cabinet is proposed, the compartments when pulled out by a stick with a hook cranked guide rails arranged next to the compartments slide, which in turn are guided between plates and thus an almost horizontal pulling out and pushing in of the Ensure subjects. For lowering, the cranked guide rails are made vertical by pulling out the compartments and guide rods arranged in parallel and pulled on them lowered or raised when the compartments are to be returned to their original position.

The guide rods can have a thread if on the cranked one Guide strips a fork with a thread to be snapped into place on these rods is attached or if the cranked Guide strips have projections with which they are in on the Guide rods movable up and down, held against rotation, Screw nuts can snap into place. By evenly turning the guide rods over a horizontally running one With a chain drive with the same translation, the guide strips with the compartments hanging on the outside are parallel and vertical emotional.

The guide rods can be unthreaded when on them Sliders are attached to chains running evenly vertically, in which the projections of the cranked guide strips be locked into place. The even running of the chains is ensured by a chain drive with a rigid connection in the

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Chain drive wheels arranged on the side walls of the cabinet guaranteed, whereby the shortest possible, endless chain can be used through a crossed installation.

The horizontally running chain drive for the threaded guide rods is arranged on the front or side wall Hand crank or optionally also moved via an electric motor arranged inside the cabinet.

For raising and lowering the gliders on the guide rods Without a thread, a hand crank can also be used, which is driven by a self-locking drive, e.g. a worm gear, the chain drive wheel and the chain only move when the hand crank is operated from the outside. By the worm drive this also prevents the chain from inadvertently moving under the load of the pulled-out compartment seats and the tray falls down.

In the case of compartments whose guide strips have a fork with a thread, several compartments that have been pulled out can be lowered or raised will.

For compartments that snap into the screw nuts or the sliders Before pulling out the compartment, the nuts or sliders must be in a compartment that corresponds to the selected compartment Height to be brought. The display of this height is done by one attached to one of the screw nuts or one of the sliders Display device. So that a compartment is not accidentally pulled out completely during this type of operation at the height of which there are no nuts or sliders, the cranked guide rails are locked by a locking device blocked, which only allows a shifting of the cranked guide rails when nuts or The gliders are at the correct height.

For compartments whose cranked guide rails have a fork

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Have threads that engage the threaded guide rods can when lifted to the height assigned to the compartment ease of use can be added. This consists of an end stop in the form of a separate one and screw nut held against rotation on the threaded guide rod, which when lowering from its Stop removed to the same extent as the pulled-out compartment from its starting position. When lifting the tray will also this separate nut is moved up to its stop. At the moment of the stop over the guide rod with thread and the chain drive can also be felt on the hand crank, the compartment has its starting position in the upper part of the cabinet achieved. This stop can have an electrical contact that switches off a drive with an electric motor.

The invention is explained in more detail by means of several exemplary embodiments and with reference to the drawing. Show it

Figure 1

the cabinet according to the invention with raisable and lowerable compartments, shown in perspective View with one compartment pulled out (solid line) and one lowered to a height accessible to the user Compartment (dash-dotted line),

Figure 2

Figure 3

Figure 4

a horizontal section along the lines I-I through the cabinet in Figure 1 with an inserted compartment and a dash-dotted line pulled out compartment,

a part of the horizontal section according to Figure 2, in which a partially extended compartment and its m the guide rod is shown with a threaded, cranked guide bar,

part of the horizontal section according to Figure 2,

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in which a partially inserted compartment and its cranked compartment inserted between plates Guide bar is shown,

Figure 5: a part of the horizontal section according to Figure 2, in which the transition of the guidance of the cranked guide strips from the plates to the guide rods or vice versa from the guide rods between the plates is shown,

Figure 6: a threaded guide rod into which part of the cranked guide rail is locked with its threaded fork,

Figure 7: a vertical section shown rotated by 90 ° along the lines II-II through the compartment and cabinet according to Figure 3, in which a cranked guide bar with a fork with thread and the plates arranged behind it are drawn,

FIG. 8: a horizontal section along the lines I-I through the cabinet according to FIG. 1 with an inserted compartment and an extended compartment drawn in dash-dotted lines, the projections of which are cranked guide strips which can be moved up and down and which are secured against twisting by a strip ,

Figure 9; a threaded guide rod and a screw nut with a display device that can be moved up and down by turning this thread,

Figure 10: the horizontally running chain drive - here arranged in the upper part of the cabinet - for the guide rods with thread and the drive of the chain drive by means of a hand crank or electric motor, furthermore a separate screw nut as an end stop,

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Figure 11

the chain drive with the chains crossed in the side walls of the cabinet for the lifting and lowering of the slider, the drive of this chain drive via a self-locking Worm drive takes place with a hand crank or electric motor,

Figure 12

a horizontal partial section along the lines III-III through the cabinet according to FIG 1, in which a locking device for the cranked guide bar is shown, which a prevents trays from being pulled out completely and

Figure 13:

a side view of the locking device according to Figure 12, the double-armed locking lever in its horizontal position (dashed line) blocks the 'cranked guide rails when there are no nuts or sliders at the level of the compartment, as well as the ones with solid lines and dotted lines shown double-armed locking lever in 2 positions, in which it is tilted by the screw nut or the slider depending on the direction of movement and thereby a shifting of the cranked guide bar is allowed.

If, in a cabinet 1 (Figure 1) of any height, the compartments 2f, e.g. drawers for large-format drawings, are to be brought to a height accessible to the user, those on guide rails 3 with threaded fork 4 (Figures 2 to -7) or the on guide strips 3 ¹ with projections 5 (Figures 8, 9 as well as 12 and 13), which in turn are guided between plates 6, sliding compartments 2 after complete pulling out on guide rods 7 (Figure 6,7) with thread or screw nuts 8 movable on the thread (Figures 8, 9 and 12) or

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on sliders 9 on threadless guide rods 10 (Figure 11) are lowered and also raised again.

The guide rods with thread 7 are according to the example by a horizontally running chain drive 12 (Figure 10) arranged in the upper part 11 (Figure 10) of the cabinet 1 same translation rotated in the same direction of rotation. It is driven by a hand crank 13 on the front or side part 14 of the cabinet 1 or via an electric motor 15 in the cabinet side part.

The sliders 9 on the threadless guide rods 10 (FIG 11) are lowered or by a chain drive 16 running in the left and right side parts of the cabinet 1 lifted, which for reasons of a movement in the same direction of the slider 9 and the simplest possible chain relocation between the guide rods 10 crosses so that the crossed Chains do not interfere with each other. To prevent a completely pulled out tray 2 due to its Weight falls unintentionally because the slider 9 the do not offer any resistance, the two chain drive wheels 18 rigidly connected to one another by a shaft 17 are replaced by a self-locking one in accordance with the example Driven worm drive 19, which in turn can be rotated by a hand crank 13 or an electric motor 15.

To prevent compartments from being accidentally pulled out if there are no nuts 8 at their height (Figures 8, 9) or sliders 9 (Figure 11) are these compartments by a locking device in the form of a double-armed lever 20 (Figure 12, 13) blocked. As long as this lever 20 is arranged by a compression spring 21 or one below the pivot point 22 Weight 23 is in a horizontal position according to the example, although the compartment can be partially pulled out, however, the cranked guide bar 3 * carrying them remains in its pushed-in position. Only the height of the out-

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Tightening and lowering compartment brought screw nuts 8 or slider 9 tilt the lever 20 about its axis of rotation 22 against the aligning effect of the compression spring 21 or a weight 23 hanging below the axis of rotation and allow the guide bar 3 to be displaced.

To see that the nuts 8 or the slides are at the height of the drawer to be pulled out, a display device 24 (Figure 9) is provided, which according to the example in openings 25 (Figure 10) on the front of cabinet 1 becomes visible.

For subjects whose cranked guide strips 3 have a fork with thread (Figure 2 to 7), the return of the subjects are facilitated in their starting position in the cabinet top if a separate one on the guide rod 7 (Figure 2, 3, 4 and 10) Screw nut 26 (Figure 10) runs along, which, since it is held against rotation on a rail 27, from their upper stop moves downwards to the same extent when lowering, as well as the compartments. When lifting this bumps separately Then screw nut back to its stop 28 when the compartments have reached their starting position. This stop 28 is noticeable via the chain drive 12 and the hand crank 13 for those who operate this hand crank. This stop 28 can also serve as a limit switch for an electric motor 15.

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Claims (1)

- sr - Patent claims: / l. ! Cabinet with raisable and lowerable subjects, in particular push \ ^ y download for the drawings, files and parts, in which the high-level compartments after pulling over mounted in the side walls of the cabinet rods with or without thread by means of a chain or toothed belt drive in brought a height accessible to the user and returned from here to their starting position, characterized in that individual or several compartments 2 can be lowered to an accessible height after pulling out by means of guide rods 7, 10 arranged in the side walls of the cabinet 1 and into their Starting position are designed to be liftable. 2. Cabinet according to claim 1, characterized in that 2 guide strips 3 are provided for guiding and supporting the compartments are equipped with a thread forks 4, which when pulling out the compartments 2 in guide- Engage rods with thread 7 and, when the guide rods 7 are rotated, the compartments 2 are lowered and raised will. 3. Cabinet according to claim 1, characterized in that 2 guide strips 3 are provided for guiding and supporting the compartments are that when pulling out the compartments 2 on guide rods with thread 7 in up and down movable nuts 8 snap into place and when the guide rods 7 are rotated, the compartments 2 are lowered and raised to support them. 4. Cabinet according to claim 1, characterized in that for guiding and carrying the compartments guide strips 3 ^{1 are} provided, which engage when pulling out the compartments 2 in on guide rods without thread 10 by a crossed chain drive 16 up and down movable slider 9 and through Actuation of the chain drive 16, the subjects are lowered and raised to support, with a uniform drive 709825 / Ö453 - ίο - ⁰ RiGiNAL INSPECTED the chain drives 16 in both side walls of the cabinet is ensured by a rigid connection 17 of the chain drive wheels 18. E>. Cabinet according to Claims Z and 3, characterized in that that on a guide rod with thread 7 an end stop is provided in the form of a screw nut held against rotation, which by rotating the guide rods is lowered or raised and can have an electrical contact. 6. Cabinet according to claim 3 and 4, characterized in that locking levers 20 are provided to prevent accidental pulling out of compartments, which are unlocked by the nuts 8 or 9 sliders. 7. Cabinet according to claim 2, 3 and 4, characterized in that that to drive the chain drives 12 and 16 cranks 13 or electric motors 15 can be used. 8. Cabinet according to claim 1, characterized in that a forwardly open, immovable box 29 is attached at the same height next to the compartments brought into a height accessible to the user. 9. Cabinet according to claim 2, 3 and 4, characterized in that the drive of the guide rods 7 or moving the Glider 9 instead of chains 12 and 16 takes place via toothed belts. 709825/0453