EP0395575B1 - Dispositif de levage dans un élément de meuble ayant en haut au moins une ouverture partielle - Google Patents

Dispositif de levage dans un élément de meuble ayant en haut au moins une ouverture partielle Download PDF

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Publication number
EP0395575B1
EP0395575B1 EP90810284A EP90810284A EP0395575B1 EP 0395575 B1 EP0395575 B1 EP 0395575B1 EP 90810284 A EP90810284 A EP 90810284A EP 90810284 A EP90810284 A EP 90810284A EP 0395575 B1 EP0395575 B1 EP 0395575B1
Authority
EP
European Patent Office
Prior art keywords
lifting device
lifting platform
lifting
shoulder straps
drive unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90810284A
Other languages
German (de)
English (en)
Other versions
EP0395575A1 (fr
Inventor
Peter Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Peka Metall AG
Original Assignee
Peka Metall AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peka Metall AG filed Critical Peka Metall AG
Priority to AT90810284T priority Critical patent/ATE83902T1/de
Publication of EP0395575A1 publication Critical patent/EP0395575A1/fr
Application granted granted Critical
Publication of EP0395575B1 publication Critical patent/EP0395575B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B77/00—Kitchen cabinets
    • A47B77/04—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts
    • A47B77/10—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts with members movable outwards to a position of use, e.g. tables, ironing boards
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/90—Constructional details of drawers
    • A47B2088/901—Drawers having a lifting mechanism

Definitions

  • the present invention relates to a lifting device in a furniture element which at least partially has an opening above, according to the preamble of patent claim 1.
  • Such lifting devices are already known on the market. They serve to arrange certain devices, such as TV sets, data processing devices, projectors, loudspeakers, kitchen machines, which are normally placed on storage surfaces of furniture, in a retractable and raised manner. As a result, in the lowered state of the lifting device, a further storage surface is obtained and the devices which are lowered with the lifting device are protected, for example, against dust or dirt. Likewise, the aesthetic effect of a room, in particular a room or a kitchen, can be increased by the invisibility of such devices. Especially in kitchen construction, the often difficult to access space in corner elements can be used sensibly with such a lifting device.
  • the American company Auton Company, Box 1129, Sun Valley, California 91353-1129, for example, is launching a lifting device serving the above-mentioned purpose.
  • This consists of two spaced-apart, parallel side walls, each of which has a toothed rack on its vertical end faces and a lifting platform arranged between the side walls.
  • a drive unit, which is used to drive, is integrated in the lift of gears, which are arranged on the sides of the lift facing the side walls and are in engagement with said racks. By driving the gearwheels in one direction or the other, the lift with the device mounted on it can be raised or lowered.
  • the entire device is intended for mounting in a furniture element.
  • a disadvantage of this lifting device is that the side walls and the toothed racks have to be made in different lengths for each desired installation height and that the toothed racks must be precisely mounted and positioned so that the lifting platform remains raised and lowered in a horizontal position. Width changes of the lifting device are relatively complex, since the length of the shaft with which the gear wheels are driven is different for each desired width. When lowering the device, a certain risk of injury cannot be ruled out when pinching parts of the body, since the lowering likewise takes place with a power drive.
  • the lifting device according to the invention is shown in FIG. 1, arranged in a furniture element.
  • the furniture element comprises a left side wall 2, a right side wall 3 and a base plate 4.
  • the front wall, rear wall and the top cover are omitted for the sake of clarity.
  • the lifting device comprises a lifting platform 1 and carrying straps 8, 9, 10. The latter are only fastened with their one end 11, 12, 13 at the top to one of the side walls 2, 3, on the mutually facing inner surfaces.
  • two support straps 8, 9 are arranged on the left side wall 2, each close to the vertical end faces of this side wall, and approximately parallel to these end faces.
  • the carrying belt 10 is mounted approximately centrally on the side wall 3. Without the lifting platform 1, these risers 8, 9, 10 would all hang loosely in the vertical direction.
  • the lifting platform 1 has a front mounting rail 5 and a rear mounting rail 6 arranged parallel thereto.
  • the mounting rails are spaced apart from one another by at least two shafts 14, 17. These shafts are each connected at their end faces to the ends of the mounting rails 5, 6. The latter are due to the stability of the lift and for easy attachment of a tray 19 covering the lifting platform is preferably designed as an angle profile.
  • the vertically hanging carrying straps 8, 9, 10 are each deflected via a deflection roller 15, 16, 18 and guided into the drive unit 7.
  • a deflection roller 15, 16, 18 is assigned to a carrying belt 8, 9, 10 and is rotatably mounted on the corresponding shaft 14, 17.
  • the left front support belt 8 is deflected via the left front deflection roller 15 of the shaft 14 and penetrates into the drive unit 7 at the location denoted by 20, with which it is in engagement.
  • the free end 23 of the support belt 8 hangs loosely from the underside of the drive unit 7.
  • the left rear carrying belt 9 is deflected via the left rear deflection roller 16 and inserted into the drive unit 7 at the point designated by 21.
  • the free end 24 of this support belt 9 also hangs loosely on the underside of the drive unit 7.
  • the right carrying belt 10 is deflected by the right deflection roller 18 arranged on the shaft 17 and 22 is introduced into the drive unit 7, with which it is also in engagement.
  • the loose end 25 of this carrying belt is also visible on the underside of the drive unit 7.
  • the latter 7 is connected to a voltage source by means of a power supply cable 26.
  • the carrying straps 8, 9, 10 can simultaneously be retracted into the latter, which causes the lifting platform 1 to move upwards.
  • the carrying straps 8, 9, 10 are simultaneously returned out of the drive unit 7, thereby the lifting platform lowers due to its own weight and the additional weight of a device arranged on the tray 19. From Fig. 1 it can be seen very nicely that no other designs are necessary for different working heights of the lifting device, but that the entire working area is determined solely by the length of the carrying straps made of a flexible material.
  • the carrying straps 8, 9, 10, which carry the lifting platform 1 and a device placed thereon are formed by toothed belts.
  • FIG. 2 shows an embodiment of the drive unit 7, which is mounted in the lifting platform 1.
  • An electric motor 31 with an integrated gear is carried by a support attached to the mounting rails 5, 6.
  • the electric motor 31 has a drive gear 32 which, depending on the polarity of the voltage applied to the electric motor, can be rotated in one direction or the other.
  • the drive gear 32 is in engagement with a first gear 37, which is arranged on a rotatably mounted first driven shaft 36.
  • the first gear 37 in turn is also in engagement with a second gear 41, which is arranged on a second driven shaft 40.
  • the shafts 36, 40 run parallel to one another and parallel to the shafts 14, 17.
  • the driven shafts 36, 40 are each rotatably connected to the front and rear mounting rails 5, 6 by means of a bearing 43, for example by means of ball bearings.
  • a front belt transport wheel 38 and a rear belt transport wheel 39 are arranged on the first driven shaft 36.
  • the belt transport wheels each consist of a toothed wheel which engages with the teeth of the corresponding toothed belt and flanges arranged on both sides of the toothed wheel which prevent the toothed belt from slipping off.
  • the toothed belts 8, 9, 10, which are deflected as described above by the deflection rollers 15, 16 and 18 approximately towards the center of the lifting platform 1, are then looped around the belt transport wheel 38, 39, 42 assigned to them and between the first and second driven shaft 36, 40 performed.
  • the free ends 23, 24 and 25 of the toothed belts project loosely from the drive unit 7 on the underside of the lifting platform 1.
  • the two driven shafts 36, 40 rotate in opposite directions to each other and at the same speed. Depending on the direction of rotation of the electric motor 31, as already mentioned, the carrying straps are drawn into the drive unit 7 or returned from the latter.
  • Reference symbol 33 denotes an interference protection capacitor arranged next to electric motor 31.
  • a detection means 34 monitors the current consumption of the electric motor 31, for example. It is known that the current consumption of the motor changes with its load.
  • the detection means now serves to determine an overload when lifting the lifting platform 1 and an underload of the motor when lowering the lifting platform 1.
  • the former can occur, for example, when heavy objects are stored on the cover plate of the furniture element, not shown, when the lifting platform 1 is lowered.
  • An underload of the drive unit can occur when lowering the lifting device by jamming any Objects, for example body parts, the further lowering process is prevented.
  • the power supply to the drive motor 31 is immediately switched off by the detection means 34, which can be a current measuring element.
  • the detection means 34 which can be a current measuring element.
  • a further spacer 35 in the example shown also a shaft, is each connected with its end faces to the support rails 5, 6 to further increase the stability.
  • the lifting platform 1 has a two-part chassis.
  • both the front mounting rail and the rear mounting rail each consist of two parts 5a, 5b and 6a, 6b.
  • the left rail parts 5a, 6a are connected by means of the deflection shaft 14 and a further spacer 48 to a left chassis part
  • the right mounting rail parts 5b, 6b are connected to the right deflection shaft and a further spacer 49 to a right chassis part.
  • These chassis parts are attached to the underside of the tray 19. Depending on the width 46 of the latter, the chassis parts have a different width adjustment distance 47 from one another.
  • the drive unit 7 is arranged only in one of the two chassis parts, in the exemplary embodiment shown on the right.
  • This two-part chassis of the lifting platform 1 provides the essential advantage that the lifting device is not only made up of the same subassemblies, regardless of different working heights, but, apart from the shelf 19, also independently of different furniture sides. This allows rational production and largely eliminates the need for adjustment work.
  • FIG. 4 shows the fastening area of the toothed belt 8 on the side wall 2 in section
  • FIG. 5 shows a corresponding side view of this area of the side wall 2. In the latter, a vertical slot 51, which crosses the side wall, is milled into the fastening area of the toothed belt 8 .
  • a cutout 50 is additionally made in the area of this slot 51 such that a T-shaped recess is visible when looking at the upper end face of the corresponding side wall area.
  • the toothed belt 8 has a hole which is penetrated by a screw 53 and on which a nut 52 is provided which is arranged in the cutout 50.
  • the width of the slot 51 and the cutout 50 are expediently coordinated with one another in such a way that the slot width is somewhat larger than the shaft diameter of the screw 53 and the cutout width essentially corresponds to the width across flats of the nut 52.
  • the end 11 of the toothed belt 8 can thus be moved and screwed in the vertical direction in the region of the cutout 50. If an equivalent design is provided for the end region 12 of the toothed belt 9, the position of the teeth of the individual toothed belts 8, 9, 10 can be coordinated with one another as required. The load of the lifting platform 1 is thus evenly distributed over the three toothed belts.

Landscapes

  • Invalid Beds And Related Equipment (AREA)
  • Wing Frames And Configurations (AREA)
  • Transmission Devices (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Claims (9)

  1. Dispositif de relevage dans un élément de meuble présentant, dans sa partie supérieure, au minimum en partie une ouverture, comprenant une plate-forme élévatrice 1 entraînable, réglable en hauteur, ainsi qu'une unité d'entraînement (7) intégrée, caractérisé en ce que respectivement une extrémité (11, 12, 13) d'au minimum deux courroies de support flexibles (8, 9, 10) se déplaçant dans une direction verticale et fixées à l'élément de meuble de telle manière que les courroies de support (8, 9, 10) soient en prise avec l'unité d'entraînement (7) pour que la plate-forme élévatrice (1) monte et descende le long des courroies de support (8, 9, 10) et qu'au minimum respectivement une courroie de support (8, 9, 10) soit disposée sur au minimum deux côtés opposés de la plate-forme élévatrice (1).
  2. Dispositif de relevage selon la revendication 1, caractérisé en ce que deux courroies de support (8, 9) soient prévues sur un des côtés de la plate-forme élévatrice (1).et sur le côté opposé une courroie de support (10)
  3. Dispositif de relevage selon la revendication 1 ou 2, caractérisé en ce que les courroies de support (8, 9, 10) sont des courroies crantées.
  4. Dispositif de relevage selon une des revendications 1 à 3, caractérisé en ce que au minimum respectivement un rouleau de renvoi (15, 16, 18) est disposé sur chacun des côtés de la plate-forme élévatrice (1) regardant les courroies de support (8, 9, 10).
  5. Dispositif de relevage selon une des revendications 1 à 4, caractérisé en ce que au minimum les courroies (8, 9) disposées sur un côté de la plate-forme élévatrice (1) sont, par leur extrémité (11, 12), reliées à l'élément de meuble réglable dans la direction verticale et/ou horizontale.
  6. Dispositif de relevage selon une des revendications 1 à 5, caractérisé en ce que l'unité d'entraînement (7) comprend un moteur électrique (31) avec réducteur et que ce dernier est destiné à l'entraînement d'au minimum un arbre (36. 40) équipé des moyens adéquats (38, 39, 42) pour l'action conjuguée des courroies de support (8, 9, 10 ).
  7. Dispositif de relevage selon la revendication 6, caractérisé en ce qu'il existe deux arbres (36, 40) tournant dans des directions opposées, équipés de moyens (38, 39, 42) pour l'action conjuguée des courroies de support (8, 9, 10), les moyens (38, 39) du premier arbre (36) étant en prise avec la ou les courroies de support (8, 9) sur un des côtés de la plate-forme élévatrice (1) et les moyens (42) du second arbre (40) avec la ou les courroies de support (10) sur le côté opposé de la plate-forme élévatrice (1).
  8. Dispositif de relevage selon une des revendications 1 à 7, caractérisé en ce que la plate-forme élévatrice (1) présente pour la réalisation de différentes largeurs d'exécution un châssis partagé (5a, 5; 6a, 6b) et que l'unité d'entraînement (7) n'est montée que dans une des parties du châssis (6a, 6b).
  9. Dispositif de relevage selon une des revendications 1 à 8, caractérisé en ce que au minimum un moyen de détection (34) est prévu pour la mesure de la charge de la plate-forme élévatrice et que le moyen de détection est destiné à arrêter l'unité d'entraînement (7) dans le cas du franchissement dans un sens ou l'autre d'une charge déterminée.
EP90810284A 1989-04-24 1990-04-10 Dispositif de levage dans un élément de meuble ayant en haut au moins une ouverture partielle Expired - Lifetime EP0395575B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90810284T ATE83902T1 (de) 1989-04-24 1990-04-10 Hebevorrichtung in einem oben zumindest teilweise eine oeffnung aufweisenden moebelelement.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH155089 1989-04-24
CH1550/89 1989-04-24

Publications (2)

Publication Number Publication Date
EP0395575A1 EP0395575A1 (fr) 1990-10-31
EP0395575B1 true EP0395575B1 (fr) 1992-12-30

Family

ID=4213033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810284A Expired - Lifetime EP0395575B1 (fr) 1989-04-24 1990-04-10 Dispositif de levage dans un élément de meuble ayant en haut au moins une ouverture partielle

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EP (1) EP0395575B1 (fr)
AT (1) ATE83902T1 (fr)
DE (1) DE59000676D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006009979U1 (de) * 2006-06-23 2007-11-08 A.C.A. Gmbh Edv & Cnc-Technik Trageinrichtung für Flachbildschirme
DE102008050877A1 (de) * 2008-09-26 2010-04-01 Rieber Gmbh & Co. Kg Höhenverstellung für Heizplatte
DE202014104063U1 (de) * 2014-08-29 2015-12-08 Jungheinrich Aktiengesellschaft Befestigungseinrichtung für einen Zahnriemen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8122103U1 (de) * 1981-07-28 1986-10-16 Kurz, Hubert, Prof. Dr.-Ing., 8000 München Hubwerk für bewegliche Fahrzeugladebrücken
DE3509262A1 (de) * 1985-03-12 1985-10-10 Heinrich Dipl.-Ing. 1000 Berlin Ranke Behindertenbett mit hebevorrichtung und badewanne
FR2614514B3 (fr) * 1987-04-29 1989-06-09 Moulinex Sa Support mobile destine a etre monte dans un meuble de cuisine pour permettre le rangement et/ou l'utilisation d'un appareil electromenager

Also Published As

Publication number Publication date
DE59000676D1 (de) 1993-02-11
EP0395575A1 (fr) 1990-10-31
ATE83902T1 (de) 1993-01-15

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