EP0702947A1 - Plaque tournante avec surface pour position assise ou debout pour handicapés - Google Patents

Plaque tournante avec surface pour position assise ou debout pour handicapés Download PDF

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Publication number
EP0702947A1
EP0702947A1 EP95109775A EP95109775A EP0702947A1 EP 0702947 A1 EP0702947 A1 EP 0702947A1 EP 95109775 A EP95109775 A EP 95109775A EP 95109775 A EP95109775 A EP 95109775A EP 0702947 A1 EP0702947 A1 EP 0702947A1
Authority
EP
European Patent Office
Prior art keywords
turntable
ring element
ring
base plate
plate
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.)
Granted
Application number
EP95109775A
Other languages
German (de)
English (en)
Other versions
EP0702947B1 (fr
Inventor
Klaus Janisch
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.)
Schmidt and Lenhardt GmbH and Co OHG
Original Assignee
Schmidt and Lenhardt GmbH and Co OHG
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 Schmidt and Lenhardt GmbH and Co OHG filed Critical Schmidt and Lenhardt GmbH and Co OHG
Publication of EP0702947A1 publication Critical patent/EP0702947A1/fr
Application granted granted Critical
Publication of EP0702947B1 publication Critical patent/EP0702947B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1073—Parts, details or accessories
    • A61G7/1076—Means for rotating around a vertical axis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A61G2200/34—Specific positions of the patient sitting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A61G2200/36—Specific positions of the patient standing

Definitions

  • the invention relates to a method for gradually changing the turning behavior of a turntable consisting of a base plate and a turntable, with which the turntable is supported on the base plate.
  • Such a turntable is known from US-A-5,000,513.
  • the rotating plate is rotatably held in the central area by means of a bearing attachment on the base plate and is supported outside of this bearing area with an annular surface on the base plate. There is a sliding connection between the rotating plate and the base plate.
  • Such turntables are used by both lightweight and heavy people. Since the torque is load-dependent, a light person needs only a small torque, but a heavy person needs a much larger torque.
  • the friction pairing has a predetermined coefficient of friction that is tailored to medium-weight people. The turntable is therefore too easy for light people, the reverse applies to heavy people.
  • the smoothness of the turntable can be increased by installing rolling bearings, as is known, for example, from US-A-2,757,388, which would mean an improvement for heavy people, but this turntable would be unsuitable for light-weight people, because disabled people can only imperfect their movements control and, a fine dosage of a very low torque is often not possible for them.
  • the turntable creates fear and uncertainty.
  • the object of the invention is to design a turntable of the type mentioned in such a way that the turning behavior can be adapted to individual needs in a simple manner.
  • the turntable according to the invention has several options for influencing the rotational resistance.
  • the ring element can be removed so that the rotating plate slides directly on the base plate, as in the known rotary plate.
  • the rotational resistance is the greatest.
  • the rotating plate slides on the ring element and this in turn slides on the base plate. Thanks to the easy mobility of the ring element in the ring groove of the rotary plate and / or the base plate, a relative sliding movement between the rotary plate and the ring element or between the ring element and the base plate or between the two pair of sliding surfaces can occur.
  • the resistance to rotation is thus reduced.
  • a further reduction in the torque required during operation is achieved by inserting rolling elements into the openings in the ring element.
  • the sliding movement is replaced by a rolling movement, whereby the rotational resistance is further reduced.
  • the ring element only acts as a cage, that is, it no longer has any influence on the turntable plate. If you use such Rolling elements, the speed of rotation of the ring element is half that of the rotating plate.
  • the number of rolling elements used also affects the smooth running of the rotating plate. In the case of a turntable with eight openings in the ring element, a lower level of smoothness can be achieved by inserting four rolling elements than when inserting eight rolling elements, which represents the step with the lowest resistance to rotation.
  • the turntable according to the invention thus has an at least three-stage, if desired, but also a four, five or six-stage adjustability of its rotational resistance, so that the cheapest rotational resistance can be set individually for the user.
  • a further development consists in that the sliding surfaces of the ring element are formed on narrow webs projecting from the ring element on the top and bottom sides. Although this increases the surface load on the narrower sliding surfaces, which has little or no effect on the rotational resistance, cavities are created between the webs, which are used to hold dust particles and foreign bodies that have penetrated. If the webs are preferably oriented in two groups of web arrangements crossing each other at right angles, with a pair of linearly aligned webs of both groups being aligned radially to the axis of rotation of the rotary plate, a conceivable arrangement circular webs ensures that no raceways form on the opposite flat sliding surfaces of the rotating plate and base plate.
  • the openings have on a pair of mutually opposite upper edges and on a pair of mutually opposite lower edges holding tabs which overlap the respective rolling element above and below and prevent it from falling out, the holding tabs being elastically deformable on at least one pair of edges for the insertion and removal of the rolling element are trained. It is therefore sufficient to press a finger on each rolling element to snap it into the opening of the ring element and, accordingly, to be able to push it out again.
  • the rolling elements at most with the exception of their end faces, are cylindrical and the openings are rectangular in the radial section of the ring element, the rolling elements being supported in the openings with rotational play.
  • the ring groove for the ring element can optionally be provided on the bottom side in the rotating plate or on the top side in the bottom plate, as is also possible to provide mutually corresponding ring grooves in both plates.
  • a turntable 10 consists of a circular disk-shaped rotating plate 12, a base plate 14, which is also illustrated here in the form of a circular disk, but could also be elongated, a cushion pad 16 on the rotating plate 12, a locking ring 18 which is clamped onto the outer edge of the rotating plate 12 and overlaps the outer circumference of the cushion pad 16, as well as a central bearing which rotatably supports the rotary plate 12 on the base plate 14 and consists of a rotary plate connector 22 and a base plate socket 24, which interlock positively and are connected to one another by a screw.
  • the bottom plate 24 On the bottom side, the bottom plate 24 has a rubber ring strip 26, which serves to increase the grip on a base.
  • a number of annular support surfaces 28, 30, 32 are formed on the rotating plate 12, with which the rotating plate 12 could be supported on the flat bottom plate 14 on the top side, namely when the 34 in FIG. 1 illustrated sliding and / or rolling arrangement is not provided or is removed from the rotary plate 12.
  • annular groove 36 is provided on the bottom side, in which an annular element 38 with radial running gaps is rotatably mounted coaxially with the axis of rotation 40 of the rotary plate 12.
  • the thickness of the ring element 38 is slightly greater than the depth of the ring groove 36, so that upper and lower sliding surfaces are formed on the ring element 38, one with the bottom surface of the ring groove 36 and the other with the top surface of the bottom plate 14 Form pair of sliding surfaces. These pair of sliding surfaces have a low coefficient of friction, so that the rotational resistance of the rotary plate 12 using the ring element 38 is lower than without this ring element 38.
  • the ring element 38 has two groups of intersecting webs 40, 42 which project from the top and bottom surfaces and on which sliding surfaces 44, 46 are formed which lie in parallel radial planes.
  • the webs 40, 42 delimit flat chambers in which dust particles and the like can collect.
  • the ring element 38 has eight radially directed openings 48 which are arranged at equal circumferential spacings and are rectangular in cross section, but which need not serve to receive cylindrical rolling elements 50.
  • the rolling elements 50 are aligned exactly radially to the axis of rotation 40 of the ring element 38 and are arranged in the openings 48 so as to be easily rotatable.
  • the diameter of the rolling elements 50 is slightly larger than the effective thickness of the ring element 38, which is measured between the two parallel planes in which the sliding surfaces 44, 46 of the webs 40, 42 lie.
  • This excess of the rolling element diameter compared to the thickness of the ring element 38 can be so small that the sliding friction between the sliding surfaces 44 on the bottom surface of the annular groove 36 and the sliding surfaces 46 on the top surface of the bottom plate 14 is only reduced, but not canceled, so that the load on the Turntable 10 is distributed both on the rolling elements 50 and on the sliding surfaces 44, 46.
  • the set of rolling elements with a smaller diameter being used if a combined sliding-rolling bearing arrangement is desired.
  • the set of slightly larger rolling elements 50 would then be used to To eliminate sliding friction, so that in this case the ring element 38 only serves as a cage for the rolling elements and, when the rotary plate 12 is rotated, only rotates under load, but without transmitting force to the base plate 14. In this case, the ring element 38 rotates half as fast as the rotating plate 12, ie when the rotating plate 12 is rotated 90 °, the ring element 38 only rotates 45 °.
  • each opening 48 there are tabs 52 which run along the central section of the opening 58 and which engage under the rolling element 50. At the two ends of the upper edges of the opening 48, similar tabs 54 are formed, which overlap the rolling element 50. These tabs 52, 54 are elastically flexible, so that the rolling elements 50 can be easily pressed into the openings 48 by finger pressure and can also be pushed out again. It is understood that the rolling elements 50 are exposed between the pairs of tabs in order to be able to roll on the respective counter surfaces on the rotary plate 12 and the base plate 14.
  • eight openings 48 are provided, so that when a rolling element 50 is inserted in each of these openings, a very low rotational resistance for the turntable 10 is achieved. This allows a comfortable turn with little force when loaded by a heavy person. If the rotational resistance is to be increased, the number of rolling elements 50 can be halved in a first increase stage, such that every second rolling element is removed. In a next step of increasing the rotational resistance, these last rolling elements 50 are also removed, so that the ring element 38 then loses its guiding function as a cage for the rolling elements, but instead receives a supporting function in the form of a slide ring. If the rotary resistance of the turntable 10 is still too large for the respective application, the ring element becomes 38 completely removed from the recess 36, so that the now forced stiffness when rotating the turntable 10 is suitable for particularly lightweight people.

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Rolling Contact Bearings (AREA)
  • Chairs Characterized By Structure (AREA)
  • Adornments (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Seats For Vehicles (AREA)
  • Toys (AREA)
EP95109775A 1994-09-22 1995-06-23 Plaque tournante avec surface pour position assise ou debout pour handicapés Expired - Lifetime EP0702947B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4433853 1994-09-22
DE4433853A DE4433853A1 (de) 1994-09-22 1994-09-22 Drehteller mit Stand- oder Sitzfläche für Behinderte

Publications (2)

Publication Number Publication Date
EP0702947A1 true EP0702947A1 (fr) 1996-03-27
EP0702947B1 EP0702947B1 (fr) 1999-11-24

Family

ID=6528909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109775A Expired - Lifetime EP0702947B1 (fr) 1994-09-22 1995-06-23 Plaque tournante avec surface pour position assise ou debout pour handicapés

Country Status (5)

Country Link
EP (1) EP0702947B1 (fr)
JP (1) JPH08224277A (fr)
AT (1) ATE186833T1 (fr)
CA (1) CA2158184A1 (fr)
DE (2) DE4433853A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10038849C2 (de) * 2000-08-04 2003-11-27 Leonair Gmbh Vorrichtung zum kippsicheren Umsetzen insbesondere körperbehinderter Personen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757388A (en) 1953-07-28 1956-08-07 Adamson Stephens Mfg Co Bedside transfer stand
US2905229A (en) 1955-11-08 1959-09-22 Raymond N Adams Rotary stool
GB2214424A (en) * 1988-01-28 1989-09-06 Alexander Feldmann Rotating seat device
DE3835532C1 (fr) * 1988-10-19 1990-02-15 Peter 7989 Eisenharz De Schmidt

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH254104A (de) * 1946-08-02 1948-04-15 Raez Ammann Ida Vorrichtung zum Drehen von Kranken auf ihrem Lager.
DE1989528U (de) * 1968-04-22 1968-07-18 Fritz Zur Heide Untergestell fuer sitzmoebel.
US3637185A (en) * 1969-05-21 1972-01-25 Seng Co The Self-orienting revolving fixture
CA2015353A1 (fr) * 1989-12-04 1991-06-04 Dennis J. Gryp Siege pivotant, en particulier pour vehicules
US5078451A (en) * 1990-08-16 1992-01-07 Sobel David J Portable rotatable beach chaise lounge
US5281017A (en) * 1992-05-26 1994-01-25 Geiss Ii Michael J Wheelchair accessible desk/lift
US5311622A (en) * 1992-07-06 1994-05-17 Allen Roy H Patient handling device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757388A (en) 1953-07-28 1956-08-07 Adamson Stephens Mfg Co Bedside transfer stand
US2905229A (en) 1955-11-08 1959-09-22 Raymond N Adams Rotary stool
GB2214424A (en) * 1988-01-28 1989-09-06 Alexander Feldmann Rotating seat device
DE3835532C1 (fr) * 1988-10-19 1990-02-15 Peter 7989 Eisenharz De Schmidt
US5000513A (en) 1988-10-19 1991-03-19 Peter Schmidt Rotary table

Also Published As

Publication number Publication date
EP0702947B1 (fr) 1999-11-24
DE4433853A1 (de) 1996-03-28
JPH08224277A (ja) 1996-09-03
DE59507282D1 (de) 1999-12-30
CA2158184A1 (fr) 1996-03-23
ATE186833T1 (de) 1999-12-15

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