EP0606845B1 - Dispositif de réglage, verrouillable, pour des pièces réglables en hauteur ou en inclinaison de canapés, de lits, etc. - Google Patents

Dispositif de réglage, verrouillable, pour des pièces réglables en hauteur ou en inclinaison de canapés, de lits, etc. Download PDF

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Publication number
EP0606845B1
EP0606845B1 EP94100088A EP94100088A EP0606845B1 EP 0606845 B1 EP0606845 B1 EP 0606845B1 EP 94100088 A EP94100088 A EP 94100088A EP 94100088 A EP94100088 A EP 94100088A EP 0606845 B1 EP0606845 B1 EP 0606845B1
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EP
European Patent Office
Prior art keywords
clamping plate
clamping
locking
adjusting mechanism
rod assembly
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
EP94100088A
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German (de)
English (en)
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EP0606845A1 (fr
Inventor
Michael Koch
Damian Heeb
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Individual
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Individual
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head-, foot- or like rests for beds, sofas or the like
    • A47C20/04—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/047—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination by friction locking means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head-, foot- or like rests for beds, sofas or the like
    • A47C20/04—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the invention relates to a lockable adjustment device for height or incline adjustable parts on couches, beds or the like with the features specified in the preamble of claim 1.
  • Such adjustment devices are used, for example, to adjust the height or inclination of headboards or footboards on patient beds, so-called comfort beds or massage tables.
  • Use on so-called convertible armchairs or chairs equipped with adjustable backrests is also conceivable.
  • a lockable adjustment device as is used in a patient's bed with a mattress frame and an adjustable in its inclination and lockable in the desired inclination lying part is basically known from DE 40 04 027 C1. Furthermore, reference is made to DE 31 04 484 C2 as a further prior art, in which the long-established basic principle of a lockable adjusting device with support rod and a locking device coupled to it is also used, the latter essentially comprising a clamping rod and an essentially rectangular one thereon to the rod longitudinal direction arranged clamping plate which encloses the clamping rod with play with an opening.
  • the clamping plate is displaceable relative to the clamping rod on the one hand in its longitudinal direction and on the other hand tiltable between a locking position and a release position with respect to the clamping rod.
  • the locking device In the locking position of the clamping plate, the locking device is blocked against the supporting force of the support rod and released in the direction of the supporting force, so that on the one hand the part which is adjustable in height or inclination is movable in an adjustment direction - for example for folding up - and in the opposite direction to it - that is to say against a fold down - is blocked.
  • This purely mechanical adjustment and locking principle is due to the clamping connection between the clamping rod and relative to this tilted clamping plate has long been known.
  • a disadvantage of the constructions shown in the above-mentioned documents is the fact that the blocking effect of the locking device must be released by a separate control panel in order to transfer the clamping plate into the so-called release position in which the clamping connection between the clamping plate and rod is not possible and so that the height or incline adjustable part e.g. can be returned to its horizontal starting position.
  • the height-adjustable or inclinable part can suddenly fold down, which is to be avoided for safety reasons. In the field of patient couches in particular, such a sudden folding down, for example of an adjustable head or backrest part, can have fatal consequences for the patient lying on the couch.
  • Clamping plate locks are also known, the unlocking lever of which initiates the torque required for releasing the clamping plate into the clamping plate either via a tension or torsion spring. This prevents accidental folding when the lock is loaded. A separate control lever is still required.
  • the present invention seeks to improve a lockable adjusting device of the generic type while maintaining the mechanically simple principle of a clamping plate and rod in such a way that the ease of use that can be achieved is increased and safety aspects are satisfied .
  • a separate control unit for transferring the clamping plate into its release position should be avoided.
  • the claimed construction is based on the knowledge that an inertial mass with which the clamping plate is provided can serve as a variable abutment for a pivoting movement of the clamping plate from its locking position into its release position.
  • This pivoting movement is controlled by the tensile force on the support rod or on the part supported by it in the direction of the support force, this tensile force being transmitted to the clamping plate by articulation of the support rod. If the support rod or the part supported by it is pulled slowly, the moment of inertia of the inertial mass does not come into play and the clamping plate remains in its locking position, in which the locking device is blocked against the direction of the supporting force and is released in this direction. With a slow train, for example, a normal folding up of the height or incline adjustable part on the couch, bed or the like is possible.
  • the bed 1 shown schematically in FIG. 1 has a lying surface 2 (not shown) resting on the bed, which is provided with a head part 3 whose inclination is adjustable. The latter is connected to the lying surface 2 at the head end of the lying surface 2 via a joint 4.
  • the head part 3 is supported by a lockable adjusting device according to the invention at a certain angle W, which can be variable between, for example, -10 ° and approximately + 90 °.
  • the lockable adjustment device is designated as a whole by 5 and consists on the one hand of a support rod 6 and a locking device 8 held under the bed surface 2 by means of support struts 7.
  • the support rod 6 consists of a double-armed lever 9, which is rotatably arranged about a pivot bearing 10 on a cross strut, not shown, of the patient bed 1.
  • the upper lever arm 11 with respect to FIG. 1 is pivotably coupled with its free end 12 in an elongated hole guide 13 on the head part 3 relative to the latter.
  • the lever arm 14, which points downward with respect to FIG. 1 has an articulated coupling at its free end 15, which leads to the locking device 8.
  • a clamping rod 17 fastened to the two support struts 7 with the clamping plate 18 arranged thereon and the ground block 19 connected to it can be seen schematically in FIG. 1.
  • the exact design of the locking device 8 in a first embodiment and its connection to the support rod 6 can be seen in FIGS. 2 to 4.
  • the clamping rod 17 passes through the clamping plate 18 through a clamping opening 20 shown in FIG. 3 with play.
  • the clamping plate 18 is arranged essentially at right angles to the longitudinal direction L of the rod and can be displaced in this direction L relative to the clamping rod 17. Due to the articulated connection between the connecting rod 16 and the one (lower) end 21 of the clamping plate 18 with the aid of the joint 22, the clamping plate 18 is coupled to the support rod 6 and can be actuated by the support rod 6 or the head part, to be described later 3 are actuated via the handle 23 for locking or releasing the locking device 8.
  • the mass block 19 is also mounted displaceably in the longitudinal direction L of the rod on the clamping rod 17.
  • the storage takes place via a roller bearing 24, which in the area of the bottom 25 has a channel-like depression 26 in the underside of the mass block 19 is arranged.
  • the clamping plate 18 carries a projection 29 which engages between two jaws 30 on the extension 27. Due to the arrangement of the pivot bearing 31 between the clamping plate 18 and the mass block 19, the latter exerts a torque on the clamping plate 18, which acts on the clamping plate 18 in the direction of its locking position.
  • the earth block 19 is coupled to the clamping plate 18 via a tension spring 32 which is inserted between the underside of the earth block 19 and the lower end 21 of the clamping plate 18 and acts on the latter in the direction of its locking position.
  • a latching device 33 is provided on the mass block 19 for fixing the clamping plate 18 in its release position.
  • This latching device 33 is designed as a substantially horizontally arranged latching lever 35 on the vertical outer side 34 of the mass block 19 which extends in the longitudinal direction L of the rod and which is pivotably mounted by means of a pivot bearing 36 about a pivot axis which runs horizontally and transversely to the longitudinal direction L of the rod.
  • the detent lever 35 is double-armed, the detent arm 37 pointing to the right in relation to FIGS. 2 to 4 being provided at its free end with a detent recess 38 which is open at the bottom and which has a corresponding detent cam 39 as a counter detent on the opposite side edge of the clamping plate 18 cooperates.
  • the locking lever 35 is spring-loaded in the locking direction R by a tension spring 40 arranged between its locking arm 37 and the earth block 19.
  • the stop arm 41 of the locking lever 35 is provided at its free end with an angled stop projection 42 which cooperates with a first stop 43 on the clamping rod 17 which is assigned to the lower end of the adjustment path of the head part 3. Since the stop 43, which is designed as a block, can be fixed in a variable position on the clamping rod 17 by means of a screw 44, the lower end of the adjustment path of the head part 3 can also be variably adjusted.
  • a further one On the side of the clamping rod 17 opposite the stop 43 is a further one, which can be fixed by means of a screw 45 and in the longitudinal direction of the rod L displaceable stop 46 is arranged, which marks the upper end of the adjustment path for the adjustment device 5. This stop interacts directly with the clamping plate 18.
  • the operator pulls the head part 3 upwards via its handle 23 with a slight pull.
  • the pivoting movement is transmitted by means of the elongated hole guide 13 to the lever 9 and further to the connecting rod 16, which slightly pulls the lower end 21 of the clamping plate 18 in the direction S of the supporting force. Due to the slight tension, the tension spring 32 is at most slightly stretched and the mass block 19 is pulled along practically without delay, so that the clamping plate 18 remains in its blocking position counter to the direction of the supporting force S, which means that when the head part 3 is released after its adjustment, it is moved into its new position by the Locking device 8 is supported in turn.
  • the clamping plate 18 is to be moved into its release position shown in FIG. 4. This is done by an accelerated or fast train on the head part 3, which is transmitted to the lower end 21 of the clamping plate 18. Due to the moment of inertia of the mass block 19, this acts as a counter bearing, the tension spring 32 is stretched and the clamping plate 18 is pivoted counterclockwise with respect to FIG. 2 about the pivot bearing 31 until the locking cam 39 comes into engagement with the locking recess 38 on the locking lever 35. So that the clamping plate 18 is fixed in its release position, whereby the blocking effect of the locking device 8 against the direction of the force S is released.
  • the head part 3 can be folded down with respect to FIGS.
  • the adjustment device thus has both a positive lock at the lower end of the adjustment path and a forced release at the upper end of the adjustment path, as well as the possibility of unlocking in any intermediate position without actuating an additional control panel.
  • FIG. 5 shows an alternative embodiment for the locking device. To avoid repetitions in the following description, parts corresponding to the above exemplary embodiment are provided with corresponding, apostrophized reference numerals. For the sake of simplicity, only the structural differences from the exemplary embodiment described above are to be explained in more detail.
  • the mass block 19 'of the locking device 8' consists of two flat cylindrical disks 47, only one of which can be seen in FIG. 5. These disks 47 are fastened rotatably in the region of the upper end 28 'of the clamping plate 18' via a rotary bearing 48.
  • the arrangement of the rotary bearing 48 is such that the clamping plate 18 'is pivoted due to the weight of the discs 47 in the direction of their locking position (ie clockwise with respect to FIG. 5).
  • the locking device 33 ' is arranged directly on the connecting rod 16' or the clamping plate 18 '. It consists of a locking projection 49, which is associated with a locking slide 51 which is spring-loaded in the direction of the joint 22 'between the clamping plate 18' and the connecting rod 16 '(compression spring 50).
  • the compression spring 50 designed as a helical spring sits coaxially on the connecting rod 16 'and is between an abutment 52 on the connecting rod 16 'and the locking slide 51 which is slidably mounted on the connecting rod 16 by means of a guide bore 53.
  • the stop 43 'assigned to the lower end of the adjustment path is provided with an additional, L-shaped extension 54 which can be operatively connected to the locking slide 51.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Claims (12)

  1. Dispositif de réglage verrouillable (5) pour des pièces réglables en hauteur ou en inclinaison de canapés, de lits ou analogue, comprenant
    - une tringlerie de support (6), dont l'une des extrémités est couplée à la pièce réglable (3) pour la supporter dans une position en hauteur ou en inclinaison, et
    - un dispositif de verrouillage (8, 8') couplé à l'autre extrémité de la tringlerie de support (6) et composé d'une tige de serrage (17, 17') et d'une plaque de serrage (18, 18'), qui est disposée sur celle-ci essentiellement perpendiculairement au sens longitudinal de la tige (L) et dont une ouverture (20) enveloppe la tige de serrage (17, 17') avec du jeu et qui est déplaçable par rapport à la tige de serrage (17, 17') en sens longitudinal de la tige (L) ainsi que renversable par rapport à la tige de serrage (17, 17') entre une position de verrouillage et une position de déverrouillage, le dispositif de verrouillage (8, 8') bloquant à l'encontre du sens de la force d'appui (S) d'une part et la tringlerie de support (6) étant relâchée en sens de la force d'appui (S) d'autre part dans la position de verrouillage de la plaque de serrage (18, 18'), et le dispositif de verrouillage (8, 8') étant débloqué à l'encontre du sens de la force d'appui (S) dans la position de déverrouillage de la plaque de serrage (18, 18'),
    caractérisé en ce que
    la tringlerie de support (6) est articulée (22, 22') à la plaque de serrage (18, 18'), et en ce que la plaque de serrage (18, 18') est pourvue d'un dispositif de crantage (33, 33') pour le crantage de la plaque de serrage (18, 18') dans sa position de déverrouillage ainsi que d'une masse inertiale (19, 19', 47) de telle sorte que, lors de traction accélérée à la tringlerie de support (6, 6'), respectivement à la piece (3) supportée par celle-ci, en sens de la force d'appui, la plaque de serrage (18, 18') soit orientable dans sa position de déverrouillage sous l'action du moment d'inertie de la masse inertielle (19, 19', 47) comme aboutement, et qu'elle soit crantable, dans cette position de déverrouillage, à l'aide du dispositif de crantage (33, 33').
  2. Dispositif de réglage selon la revendication 1, caractérisé en ce que la masse inertielle se compose d'un corps inertiel (19, 19', 47), qui est fixé aux extrémités (28, 28') de la plaque de serrage (18, 18') qui sont opposées au point d'articulation (22, 22') de la tringlerie de support (6).
  3. Dispositif de réglage selon la revendication 1 ou 2, caractérisé par des butées (43, 43', 46, 46') sur la tige de serrage (17, 17'), qui sont conjuguées au bout supérieur, respectivement inférieur, du chemin de réglage de la pièce réglable (3), la butée (46, 46') conjuguée au bout supérieur du chemin de réglage produisant un crantage forcé de la plaque de serrage (18, 18') dans sa position de déverrouillage, et la butée (43, 43') conjuguée au bout inférieur du chemin de réglage produisant un débloquage forcé de la plaque de serrage (18, 18') à partir de sa position de déverrouillage dans la position de verrouillage.
  4. Dispositif de réglage selon la revendication 2 ou 3, caractérisé en ce que le corps inertiel est un bloc de masse (19) guidé de façon déplaçable sur la tige de serrage (17, 17') et raccordé à la plaque de serrage (18, 18') par la voie d'un joint (31) et disposé sur le côté de la plaque de serrage (18, 18') qui est détourné de la tringlerie de support (6).
  5. Dispositif de réglage selon la revendication 4, caractérisé en ce qu'un ressort de traction (32) agissant sur la plaque de serrage (18) en sens de sa position de verrouillage est disposé entre la plaque de serrage (18) et le bloc de masse (19).
  6. Dispositif de réglage selon la revendication 5 et 6, caractérisé en ce que le dispositif de crantage (33) est un levier à cran (35), qui est logé de façon orientable sur le bloc de masse (19) et qui peut être engrené avec un cran d'arrêt (39) correspondant sur la plaque de serrage (18) dans la position de déverrouillage de celle-ci.
  7. Dispositif de réglage selon la revendication 6, caractérisé en ce que le levier à cran est actionné à ressort (40) en sens de crantage (R).
  8. Dispositif de réglage selon la revendication 6 ou 7, caractérisé en ce que le levier à cran (35) est pourvu d'une butée en saillie (42), par la voie de laquelle il est désengrenable de la plaque de serrage (18) quand il aboutit à la butée (43) conjuguée au bout inférieur du chemin de réglage sur la tige de serrage (17).
  9. Dispositif de réglage selon l'une quelconque des revendications 5 à 8, caractérisé en ce que le bloc de masse est disposé par assise de rouleau (24) sur la tige de serrage (17).
  10. Dispositif de réglage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le corps inertiel est formé comme bloc de masse ou comme disques, qui est de préférence cylindrique et installé de façon rotative sur la tige de serrage (18') et dont le coussinet de pivotement (48) est disposé sur la plaque de serrage (18') sur le côté de celle-ci qui est opposé au point d'articulation (22') de la tringlerie de support (6) de telle sorte que le bloc de masse (19') exerce un moment de torsion sur la plaque de serrage (18') en sens de la position de verrouillage de celle-ci.
  11. Dispositif de réglage selon la revendication 10, caractérisé en ce que le le joint (22') qui forme le point d'articulation de la tringlerie de support (6) sur la plaque de serrage (18') est actionné à ressort en sens de la position de verrouillage de la plaque de serrage (18').
  12. Dispositif de réglage selon la revendication 10 ou 11, caractérisé en ce que le dispositif de crantage (33') est un coulisseau de crantage (51) guidé de façon déplaçable sur telle extrémité de la tringlerie de support (6) qui se trouve au côté de la plaque de serrage, et actionné à ressort en sens vers le joint (22') entre la plaque de serrage (18') et la tringlerie de support (6), et engrenable avec une saillie de crantage (49) correspondante sur la plaque de serrage (18') dans la position de déverrouillage de celle-ci.
EP94100088A 1993-01-12 1994-01-05 Dispositif de réglage, verrouillable, pour des pièces réglables en hauteur ou en inclinaison de canapés, de lits, etc. Expired - Lifetime EP0606845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4300547A DE4300547A1 (de) 1993-01-12 1993-01-12 Arretierbare Verstellvorrichtung für höhen- oder neigungsverstellbare Teile an Liegen, Betten oder dergleichen
DE4300547 1993-01-12

Publications (2)

Publication Number Publication Date
EP0606845A1 EP0606845A1 (fr) 1994-07-20
EP0606845B1 true EP0606845B1 (fr) 1997-04-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100088A Expired - Lifetime EP0606845B1 (fr) 1993-01-12 1994-01-05 Dispositif de réglage, verrouillable, pour des pièces réglables en hauteur ou en inclinaison de canapés, de lits, etc.

Country Status (2)

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EP (1) EP0606845B1 (fr)
DE (2) DE4300547A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110507348B (zh) * 2019-08-30 2022-11-29 东软医疗系统股份有限公司 床板锁定装置及扫描床
CN111248687B (zh) * 2020-03-23 2024-10-01 中山市贝乐斯日用制品有限公司 一种婴儿床用折叠支架及婴儿床

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT384542B (de) * 1986-02-28 1987-11-25 Riedl Georg Bett
DE4004027C1 (fr) * 1990-02-10 1991-05-29 L. & C. Arnold Ag, 7060 Schorndorf, De

Also Published As

Publication number Publication date
DE4300547A1 (de) 1994-07-14
EP0606845A1 (fr) 1994-07-20
DE59402257D1 (de) 1997-05-07

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