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EP1891872B1 - Dispositif et procédé de détection de collisions pour les meubles - Google Patents

Dispositif et procédé de détection de collisions pour les meubles Download PDF

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Publication number
EP1891872B1
EP1891872B1 EP06017650A EP06017650A EP1891872B1 EP 1891872 B1 EP1891872 B1 EP 1891872B1 EP 06017650 A EP06017650 A EP 06017650A EP 06017650 A EP06017650 A EP 06017650A EP 1891872 B1 EP1891872 B1 EP 1891872B1
Authority
EP
European Patent Office
Prior art keywords
table leg
furniture
sensor
movable part
height
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.)
Revoked
Application number
EP06017650A
Other languages
German (de)
English (en)
Other versions
EP1891872A1 (fr
Inventor
Michael Buitmann
Michael Köder
Thomas Strothmann
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.)
Kesseboehmer Produktions GmbH and Co KG
Original Assignee
Kesseboehmer Produktions GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36950517&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1891872(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kesseboehmer Produktions GmbH and Co KG filed Critical Kesseboehmer Produktions GmbH and Co KG
Priority to EP06017650A priority Critical patent/EP1891872B1/fr
Priority to DK06017650.0T priority patent/DK1891872T3/da
Priority to AT06017650T priority patent/ATE469577T1/de
Priority to DE502006007106T priority patent/DE502006007106D1/de
Priority to US11/843,905 priority patent/US7661292B2/en
Publication of EP1891872A1 publication Critical patent/EP1891872A1/fr
Application granted granted Critical
Publication of EP1891872B1 publication Critical patent/EP1891872B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47B9/00—Tables with tops of variable height
    • 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
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
    • A47B2200/006—Leg adjustment with a motor, e.g. an electric motor with table or desk equipped with limit switches

Definitions

  • the invention relates to a device and a method for detecting collisions in furniture, and in particular relates to an apparatus and a method for detecting collisions of automatically movable portions of furniture with obstacles by detecting a change in bending.
  • Fig. 1 shown desk has next to a table top 1, a support frame 2 on two table legs 3, which are telescopically adjustable in length and are connected to the support frame.
  • the table legs include, for example, an electric motor and a threaded rod (not shown) for automatic length change.
  • a collision is detected only when it occurs on the miniature switch bar, ie in the region of the edges of the table top, while pressure is exerted from a limited direction range on the miniature switch bar. If a collision occurs only slightly inside the tabletop, it can not be detected by the miniature selector. In addition, the large-scale attachment of the miniature switch bar limits the aesthetic design options of the table top.
  • document AT 501 146 A4 discloses a piece of furniture according to the preamble of claim 1
  • the object of the invention is to provide a method and a device for detecting collisions of automatically movable parts of furniture with obstacles which eliminate the mentioned disadvantages and in particular to provide a device and a method for collision of the movable part with an obstacle over the entire surface of the movable portion in a timely, reliable and cost-effective manner.
  • devices such as automatically retractable projectors, screens or the like are considered as movable parts of furniture within the scope of the invention.
  • the invention provides a device for detecting collisions of automatically movable parts of furniture with obstacles, comprising: a piece of furniture with at least one movable part, which part is adapted to be moved relative to the rest of the furniture, an automatic drive mechanism, adapted to move the movable portion, control means adapted to control the automatic drive mechanism and a sensor adapted to detect a collision in the movement of the movable portion with an obstacle and to the control device to convey.
  • the sensor detects a bending change of the movable portion.
  • the device can be provided inexpensively because the sensor is a piezoelectric sensor, the sensor being a piezoelectric diaphragm for generating sound signals.
  • the reliability of collision detection can be increased by mounting the sensor on the movable member at a mounting location where a high bending moment is applied in the event of a collision.
  • Such attachment points are preferably located on a radial inner side of a hollow table leg, on the table top in the immediate vicinity of the upper end of the table leg and on a horizontal support plate connected to a table leg of a support frame of the table top.
  • an additional plate is provided at the upper end of the table leg and the attachment point is arranged on the additional plate.
  • the additional plate may overlap the circumference of the table leg and the attachment point be arranged outside the outer circumference of the upper end of the table leg, which is advantageous if the circumference of the table leg is dimensioned too small to accommodate the sensor.
  • a device as described above, wherein the sensor detects an acceleration of a part of the movable portion instead of a bending change.
  • an attachment point at which there is a high acceleration in the event of a collision.
  • Such an attachment point is given, inter alia, in the region of a front edge and a rear edge of the table top.
  • the invention provides a method which detects a collision of automatically movable portions of furniture via the steps of: operating an automatic drive mechanism by the control means to move the movable portion in a predetermined direction, detecting a change in bending of the movable portion at an attachment point by a sensor upon collision of the movable portion with an obstacle, transmitting a signal from the sensor to the control device, stopping the automatic drive mechanism by the control device.
  • the detection of the change in bending is made by changing a compression or elongation of a piezoelectric material in a piezoelectric diaphragm at the bending change of the mounting location on the movable portion and generating an electrical signal by the piezoelectric material upon the change in compression or extension.
  • changing a compression or extension of the piezoelectric material in the bending change of the location of the movable portion consists of changing a curvature of a piezoelectric diaphragm.
  • the previous method is followed by the step of returning the movable portion by a predetermined distance in the opposite direction to the original direction of movement.
  • Fig. 1 shows an automatically height-adjustable table with a table top 1, which has a front edge 11 and a rear edge 12.
  • the table top 1 is mounted on a support frame 2, which consists of a front and a rear square beam 21 and a right and a left support plate 22.
  • the carrier plates 22 are each connected to table legs 3.
  • a table leg consists of an inner table leg component 31, which at its upper end with the support plate 22nd is connected, and an outer table leg member 32 which are arranged one inside the other, that the table leg 3 is telescopically adjustable in length. At the lower end of the outer member 32 is perpendicular to a researchingbauteil 33 is arranged.
  • an electric motor not shown, and a not shown spindle gear are mounted with threaded rod.
  • the electric motors of both table legs 3 are operated by a control device, not shown, and are adapted to rotate the threaded rod and so make an automatic change in length of the table legs 3.
  • the control device is connected to a respective switch for selecting an upward movement and a downward movement of the table top.
  • a sensor 4 is located at the upper end of the hollow inner table member 31 on a radially inner surface 36, for example on an inner side facing the other table leg 3.
  • a piezoelectric diaphragm 4 is used, which is conventionally used as a cost-effective sound generator in, for example, watches, calculators and washing machines.
  • the auxiliary plate 34 is designed such that it overlaps the inner table leg component 31 on at least one side with a section 35 at least the width of the piezoelectric diaphragm 4.
  • the overlapping portion 35 of the auxiliary plate 34 is Fig. 5b slightly bent in the direction of the viewer's side facing away. When table leg 3 and support frame 2 are fastened together, the overlapping portion 35 is biased. The location of the piezoelectric diaphragm 4 is disposed on the biased overlapping portion 35 outside the table leg.
  • An attachment of the sensor according to the FIGS. 3 . 4A and 5A moreover has the advantage that sensor technology, control device and drive concentrate on the table legs, and other table components, such as table top 1 and support frame 2, which are provided in many cases by third-party manufacturers, remain unaffected.
  • the mounting location of the piezoelectric diaphragm 4 may be arranged on the support plate 22 of the support frame 2. This is at the in Fig. 6 shown central position on the upper side of the support plate 22, on the in FIGS. 7 and 8th shown, offset in the direction of the front edge 11 of the table top position at the bottom or the top of the partition plate position generates a high bending deformation, which is reliably detected by the piezoelectric diaphragm 4.
  • an acceleration sensor is used instead of the piezoelectric diaphragm 4.
  • the acceleration sensor is a piezoelectric inertia sensor in which by a rest mass a predetermined force on a piezoelectric Material is exercised. Upon an acceleration change of the sensor, the force of the rest mass changes to the piezoelectric material, whereby its compression or extension changes.
  • the rest of the structure of the example corresponds to the structure of the embodiment, to which reference is hereby made.
  • the attachment point of the acceleration sensor is located in the region of the front edge 11 and / or the rear edge 12 of the table top 1, since high acceleration values occur in the event of a collision of the table top with an obstacle.
  • a movement initiation of the table top is initiated according to the collision detection process of the embodiment. For example, if the table top encounters an obstacle in the central area of the front edge, the movement of the table top is slowed down, which corresponds to an acceleration upwards of the acceleration sensor attached to the table top.
  • the acceleration sensor generates a voltage difference, which is transmitted as a signal to the control device.
  • the control device then controls the drive of the electric motors in the manner described in the embodiment.

Landscapes

  • Tables And Desks Characterized By Structural Shape (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Burglar Alarm Systems (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Warehouses Or Storage Devices (AREA)

Claims (13)

  1. Meuble avec au moins une partie (1, 2, 31) automatiquement mobile, ladite partie étant adaptée à être déplacée non manuellement par rapport au reste du meuble, comportant : un dispositif destiné à détecter des collisions de la partie automatiquement mobile avec des obstacles, un mécanisme d'avance automatique, qui est adapté à déplacer la partie mobile, un dispositif de commande, qui est adapté à commander le mécanisme d'avance automatique, et un capteur (4) qui est adapté à détecter et transmettre au dispositif de commande une collision de la partie mobile avec un obstacle, lors du mouvement de celle-ci, caractérisé en ce que le capteur est adapté à détecter une variation de la flexion de la partie mobile, le capteur (4) comporte un matériau piézoélectrique (42), et le capteur (4) est un diaphragme piézoélectrique destiné à générer des signaux de commutation.
  2. Dispositif selon la revendication précédente, dans lequel le capteur (4) est monté sur la partie mobile (1, 2, 31) à un emplacement de montage, au niveau duquel un couple de flexion moyennement élevé est appliqué dans le cas d'une collision.
  3. Dispositif selon la revendication précédente, dans lequel le capteur (4) est monté sur la partie mobile (1, 2, 31) à un emplacement de montage, au niveau duquel un fléchissement moyennement élevé est appliqué dans le cas d'une collision, au lieu d'un couple de flexion.
  4. Dispositif selon les deux revendications précédentes, dans lequel le meuble est une table réglable en hauteur, qui comporte au moins un pied de table (3) réglable en hauteur et l'emplacement de montage est situé dans la zone d'extrémité supérieure de celui-ci.
  5. Dispositif selon l'une quelconque des revendications 2 à 4, dans lequel le meuble est une table réglable en hauteur, qui comporte au moins un pied de table (3) réglable en hauteur et le pied de table (3) est creux et l'emplacement de montage est situé sur une face intérieure (36) radiale du pied de table.
  6. Dispositif selon la revendication 2 ou 3, dans lequel le meuble est une table réglable en hauteur, qui comporte au moins un pied de table (3) réglable en hauteur, à l'extrémité supérieure duquel est prévue une plaque supplémentaire (35) et l'emplacement de montage est situé sur la plaque supplémentaire.
  7. Dispositif selon la revendication précédente, dans lequel la plaque supplémentaire (35) s'avance au-delà du pourtour du pied de table (3), et l'emplacement de montage est situé en dehors du pourtour extérieur de l'extrémité supérieure du pied de table.
  8. Dispositif selon la revendication 2 ou 3, dans lequel le meuble est une table réglable en hauteur, qui comporte au moins un pied de table (3) réglable en hauteur et un plateau de table (1), qui est assemblé indirectement ou directement au pied de table, et l'emplacement de montage est situé à proximité immédiate de la zone d'extrémité supérieure du pied de table.
  9. Dispositif selon la revendication 2 ou 3, dans lequel le meuble est une table réglable en hauteur, qui comporte au moins un pied de table (3) réglable en hauteur et un plateau de table (1), ledit plateau de table est assemblé à une structure de support (2) qui comporte une plaque de support (22) horizontale qui est assemblée au pied de table, et l'emplacement de montage est situé sur la plaque de support en face de la zone d'extrémité supérieure du pied de table.
  10. Dispositif selon la revendication précédente, dans lequel l'emplacement de montage est situé sur la plaque de support (22) de manière adjacente à la zone d'extrémité supérieure du pied de table (3) ou ledit emplacement de montage est situé sur le côté opposé sur l'autre face de la plaque de montage (22).
  11. Procédé destiné à détecter des collisions ou une manoeuvre de collision entre des parties automatiquement mobiles de meubles et des obstacles, un meuble selon une des revendications de dispositif étant mis à disposition, le procédé comportant en outre les étapes :
    1) utilisation du mécanisme d'avance automatique par le dispositif de commande pour déplacer la partie mobile dans un sens prédéterminé ;
    2) détection d'une variation de la flexion d'un emplacement de montage de la partie mobile par le capteur, en cas de collision de la partie mobile avec un obstacle, par les étapes variation d'un aplatissement ou d'un allongement du matériau piézoélectrique lors de la variation de la flexion de l'emplacement de la partie mobile, et production d'un signal électrique par le matériau piézoélectrique lors de la variation de l'aplatissement ou de l'allongement ;
    3) transmission d'un signal depuis le capteur vers le dispositif de commande ;
    4) immobilisation du mécanisme d'avance automatique par le dispositif de commande.
  12. Procédé selon la revendication de procédé précédente, dans lequel la détection de la variation de la flexion est effectuée à un emplacement de montage qui présente une déformation par flexion moyennement élevée dans le cas d'une collision.
  13. Procédé selon l'une des revendications de procédé précédentes, dans lequel les étapes sont suivies de l'étape de mouvement de retour de la partie mobile sur une distance prédéfinie dans le sens opposé au sens de déplacement précédent.
EP06017650A 2006-08-24 2006-08-24 Dispositif et procédé de détection de collisions pour les meubles Revoked EP1891872B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06017650A EP1891872B1 (fr) 2006-08-24 2006-08-24 Dispositif et procédé de détection de collisions pour les meubles
DK06017650.0T DK1891872T3 (da) 2006-08-24 2006-08-24 Indretning og fremgangsmåde til genkendelse af kollisioner ved møbler
AT06017650T ATE469577T1 (de) 2006-08-24 2006-08-24 Vorrichtung und verfahren zur erkennung von kollisionen bei möbeln
DE502006007106T DE502006007106D1 (de) 2006-08-24 2006-08-24 Vorrichtung und Verfahren zur Erkennung von Kollisionen bei Möbeln
US11/843,905 US7661292B2 (en) 2006-08-24 2007-08-23 Device and method for detection of collisions in furniture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06017650A EP1891872B1 (fr) 2006-08-24 2006-08-24 Dispositif et procédé de détection de collisions pour les meubles

Publications (2)

Publication Number Publication Date
EP1891872A1 EP1891872A1 (fr) 2008-02-27
EP1891872B1 true EP1891872B1 (fr) 2010-06-02

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ID=36950517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06017650A Revoked EP1891872B1 (fr) 2006-08-24 2006-08-24 Dispositif et procédé de détection de collisions pour les meubles

Country Status (5)

Country Link
US (1) US7661292B2 (fr)
EP (1) EP1891872B1 (fr)
AT (1) ATE469577T1 (fr)
DE (1) DE502006007106D1 (fr)
DK (1) DK1891872T3 (fr)

Cited By (2)

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WO2019149296A1 (fr) 2018-01-31 2019-08-08 Oelschläger Metalltechnik GmbH Table à hauteur réglable électriquement et son procédé de commande
DE102020211550A1 (de) 2020-09-15 2022-03-17 Kesseböhmer Holding Kg Antriebssystem zum Bewegen einer höhenverstellbaren Tischplatte, Tisch mit einem solchen Antriebssystem und Verfahren zum Erfassen einer Kollision einer höhenverstellbaren Tischplatte

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EP2583586B2 (fr) * 2011-10-18 2021-08-04 Kesseböhmer Produktions GmbH & Co. KG Dispositif de détection de collisions et procédé associé
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CN110250739A (zh) * 2019-04-18 2019-09-20 美国乐歌有限公司 实现将遇阻回退的电动升降桌台控制系统及方法
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019149296A1 (fr) 2018-01-31 2019-08-08 Oelschläger Metalltechnik GmbH Table à hauteur réglable électriquement et son procédé de commande
DE102020211550A1 (de) 2020-09-15 2022-03-17 Kesseböhmer Holding Kg Antriebssystem zum Bewegen einer höhenverstellbaren Tischplatte, Tisch mit einem solchen Antriebssystem und Verfahren zum Erfassen einer Kollision einer höhenverstellbaren Tischplatte

Also Published As

Publication number Publication date
US20080289544A1 (en) 2008-11-27
DK1891872T3 (da) 2010-07-19
US7661292B2 (en) 2010-02-16
EP1891872A1 (fr) 2008-02-27
DE502006007106D1 (de) 2010-07-15
ATE469577T1 (de) 2010-06-15

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