WO1999019247A1 - Telescopic supporting column - Google Patents

Telescopic supporting column Download PDF

Info

Publication number
WO1999019247A1
WO1999019247A1 PCT/NO1998/000306 NO9800306W WO9919247A1 WO 1999019247 A1 WO1999019247 A1 WO 1999019247A1 NO 9800306 W NO9800306 W NO 9800306W WO 9919247 A1 WO9919247 A1 WO 9919247A1
Authority
WO
WIPO (PCT)
Prior art keywords
supporting column
section
telescopic
actuator
telescopic supporting
Prior art date
Application number
PCT/NO1998/000306
Other languages
French (fr)
Norwegian (no)
Inventor
Thor Frølich BRAATHEN
Original Assignee
Braathen Thor F
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 Braathen Thor F filed Critical Braathen Thor F
Priority to AU95617/98A priority Critical patent/AU9561798A/en
Publication of WO1999019247A1 publication Critical patent/WO1999019247A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • 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
    • A47B9/12—Tables with tops of variable height with flexible height-adjusting means, e.g. rope, chain
    • 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
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A61G13/06—Adjustable operating tables; Controls therefor raising or lowering of the whole table surface
    • 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
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/012—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame raising or lowering of the whole mattress frame
    • 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
    • A47B2200/0051—Telescopic
    • A47B2200/0054—Telescopic with three telescopic parts
    • 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
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms

Definitions

  • Figure 3 is a sectional view through the supporting column in Fig. 1 ;

Abstract

A telescopic supporting column, especially for treatment couches, tables, hospital beds etc., including an inner telescopic supporting column section (1), an outer telescopic supporting column section (3) and an intermediate telescopic supporting column section (2), an actuator (4) for telescopic movement of the supporting column, and a cord drive device (10) attached to the supporting column for increasing the effect of the length of stroke of the actuator, characterised in that the actuator (10) is connected between a supporting column end and the intermediate supporting column section, and that the cord drive device includes a pulley (8, 9) in each end of the intermediate supporting column section and, placed around the pulley (8, 9), a cord drive which is connected to the inner and outer supporting column section, whereby the cord drive is double-acting.

Description

TELESCOPIC SUPPORTING COLUMN
The invention relates to a telescopic supporting column, especially for treatment couches, tables, hospital beds etc., including an inner telescopic supporting column section, an outer telescopic supporting column section and an intermediate telescopic supporting column section, an actuator for telescopic movement of the supporting column, and a cord drive device attached to the supporting column for increasing the effect of the length of stroke of the actuator.
As mentioned, the invention has been developed in particular in connection with treatment couches, tables, hospital beds etc., i.e., means where height adjustment is desirable.
In many cases, when, for example, the weight of the manoeuvred element, e.g., a couch top, is low, the element might not be not lowered when the actuator goes down, because the cord drive device is intended primarily for action during the drawing out of the telescopic supporting column. This problem might also arise when the element which is to be raised or lowered is attached to the supporting column via a lever arm.
According to the invention, it is therefore proposed to connect the actuator between an end of the supporting column and the intermediate supporting column section, and to construct the cord drive device to include a pulley in each end of the intermediate supporting column section and, placed around the pulleys, a cord drive which is connected to the inner and the outer supporting column sections. Designing the supporting column in this way will cause the cord drive to be double-acting, i.e., a positive effect on the telescopic supporting column is obtained both on extension and retraction.
The telescopic supporting column according to the invention may to advantage have an external actuator. This results in a supporting column of simpler structure, and at the same time the actuator is more easily accessible.
According to the invention, the cord drive may to advantage be an endless cord. This endless cord is then placed around the pulleys and is secured in a suitable way to the inner and outer supporting column sections. It is especially desirable that the telescopic supporting column be designed to have a rectangular cross-section. A telescopic supporting column designed in this way will have flat lateral faces which will facilitate attachment or connection to other elements, for example, a base frame and a couch top or its supporting frame.
An especially advantageous embodiment according to the invention is one where the outer supporting column section is the upper section of the telescopic supporting column. This permits a particularly favourable embodiment wherein, for example, a couch supporting frame may be made of vertical plate elements, which can be attached in a simple manner to the rectangular outer, upper supporting column section.
The invention will now be explained in more detail with reference to the drawings, wherein:
Figure 1 is a perspective view of a telescopic supporting column according to the invention, when drawn in or retracted;
Figure 2 shows the telescopic supporting column in Fig. 1 when drawn out, i.e., extended;
Figure 3 is a sectional view through the supporting column in Fig. 1 ;
Figure 4 is a sectional view through the supporting column in Fig. 2;
Figure 5 is a perspective view of a telescopic supporting column according to the invention, having a supporting frame for a non-illustrated couch top attached thereto;
Figure 6 is a front elevation of the supporting column in Fig. 5, where one side of the supporting frame has been removed; and
Figure 7 shows a section through the supporting column in Fig. 6.
Figures 1 to 4 show a tripartite supporting column. The supporting column has three supporting column sections 1 , 2 and 3. An actuator 4 is articulately attached to the lower supporting column section 3 at 5, and at 6 is articulately attached to a bracket 7 connected to the middle supporting column section 2, which bracket also supports a pulley 8. Inside the telescopic supporting column, a pulley 9 (see Figs. 3 and 4) is mounted on the middle supporting column section 2, at the lower end thereof. An elongate element 10, for example, a belt, wire or cord, is placed around the two pulleys 8 and 9, as is shown in Figures 3 and 4. The elongate element 10 is connected to the upper supporting column section 1 at 11 and is connected to the lower supporting column section 3 at 12. In respectively the upper and lower supporting column sections 1, 3, an opening 13 and 14 respectively has been made for the passage of the elongate element 10, which in the exemplary embodiment is in the form of an endless cord.
When the actuator 4 is extended from the retracted position in Fig. 3, the upper and middle supporting column sections 1, 2 are drawn out as shown in Fig. 4. When the actuator 4 is shortened, the upper and middle supporting column sections 1, 2 will be drawn down into the lower, outer supporting column section 3 and so back the state illustrated in Fig. 3. The illustrated and described cord drive arrangement ensures a double action, i.e., that the supporting column is extended and shortened in a positive manner by means of the actuator 4, and there is no dependence on the weight of the element manoeuvred by the telescopic supporting column being sufficient to compress the supporting column when drawing down or retracting the telescopic supporting column.
Bearing pads 15 that are known per se are provided between the supporting column sections 1, 2, 3, and these afford favourable guiding of the supporting column members relative to one another and to a great extent prevent the effects of overturning moments which are due to the external location of the actuator.
The telescopic supporting column illustrated in Figures 1 to 4 has a rectangular cross- section and is so constructed that it is the inner supporting column section 1 which is the upper section of the telescopic supporting column. The sections may of course be arranged in the reverse fashion, and an embodiment of this kind is shown in Figures 5 to
7.
Figures 5 to 7 show a telescopic supporting column (when retracted) and this telescopic supporting column has an upper, outer supporting column section 20, a middle supporting column section 21 and a lower, inner supporting column section 22. The lower, inner supporting column section 22 is connected to a base 23, shown only schematically, intended to rest against, e.g., a floor 24. In this case, the outer, upper supporting column section 20 is attached to a couch top 25, primarily by means of two mutually parallel generally triangular plate elements 26, 27.
5
Uppermost on the upper supporting column section 20, there is provided a bracket 28 to which an actuator 29 is articulately attached at 30. The other lower end of the actuator 29 is articulately attached at 31 to a projection 32 on the middle supporting column section 21. A pulley 33 is supported in this projecting part 32. A pulley 34 is supported l o at the top in the intermediate supporting column section 21 , and as in the preceding exemplary embodiment, an endless cord 35 runs around these pulleys 33, 34. The endless cord 35 is passed through and secured to the middle supporting column section 21 at 36 and at 37 is passed through and secured to the outer, upper supporting column section 20.
15
It will be appreciated that the telescopic supporting column in Figures 5 to 7 functions in the same way as that shown in Figures 1 to 4, and that also this telescopic supporting column benefits from a double-acting cord drive which is actuated by means of the actuator.
20
As in the preceding exemplary embodiment, guide pads or bearing pads 38 are arranged between the supporting column sections 20, 21 and 22.
The plates 26 and 27 are screwed or spot welded to the plane-parallel sides of the outer, 25 upper supporting column section 20, so demonstrating what is favourable about having a "reverse" supporting column of this kind.

Claims

P a t e n t c l a i m s
1.
A telescopic supporting column, especially for treatment couches, tables, hospital beds etc., including an inner telescopic supporting column section (1), an outer telescopic supporting column section (3) and an intermediate telescopic supporting column section (2), an actuator (4) for telescopic movement of the supporting column, and a cord drive device (10) attached to the supporting column for increasing the effect of the length of stroke of the actuator, characterised in that the actuator (4) is connected between a supporting column end and the intermediate supporting column section (2), and that the cord drive device includes a pulley (8, 9) in each end of the intermediate supporting column section and, placed around the pulley, a cord drive which is connected to the inner and outer supporting column sections (1, 3), whereby the cord drive is double-acting.
2.
A telescopic supporting column according to claim 1, characterised in that the actuator
(4) is an external actuator.
3.
A telescopic supporting column according to claim 1 or 2, characterised in that the cord drive is an endless cord (10).
4. A telescopic supporting column according to one of the preceding claims, characterised in that the supporting column has a rectangular cross-section.
5.
A telescopic supporting column according to one of the preceding claims, characterised in that the outer supporting column section (20) is the upper section of the telescopic supporting column.
PCT/NO1998/000306 1997-10-13 1998-10-09 Telescopic supporting column WO1999019247A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU95617/98A AU9561798A (en) 1997-10-13 1998-10-09 Telescopic supporting column

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO974725A NO974725L (en) 1997-10-13 1997-10-13 Telescopes should be worn
NO19974725 1997-10-13

Publications (1)

Publication Number Publication Date
WO1999019247A1 true WO1999019247A1 (en) 1999-04-22

Family

ID=19901205

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1998/000306 WO1999019247A1 (en) 1997-10-13 1998-10-09 Telescopic supporting column

Country Status (3)

Country Link
AU (1) AU9561798A (en)
NO (1) NO974725L (en)
WO (1) WO1999019247A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021408A1 (en) * 1998-10-13 2000-04-20 Curt Pettersson Vertically adjustable column
DE10131861A1 (en) * 2001-06-30 2003-01-16 Guenter Noeleken Lifting, tensioning and pressing appliance has pulley block cable fixed to ends of polygonal pipe elements by means of deflector rollers
WO2003030802A2 (en) * 2001-10-08 2003-04-17 Eschmann Holdings Limited Surgical tables
US6779210B1 (en) 2003-03-18 2004-08-24 Hugh Kelly Elevating bed
US8408083B2 (en) 2004-11-17 2013-04-02 Linak A/S Linear actuator
US20130126682A1 (en) * 2011-09-09 2013-05-23 Alan L. Tholkes Computer lift
US9232855B2 (en) 2013-08-19 2016-01-12 Ergotron, Inc. Height adjustable desk system and method
EP3067032A1 (en) * 2015-03-12 2016-09-14 Accora Limited Lifting mechanism
US9743754B2 (en) 2015-07-21 2017-08-29 Ergotron, Inc. Gas spring lift
US10188566B2 (en) 2016-10-31 2019-01-29 Accora Limited Lifting mechanism
EP3373768A4 (en) * 2015-11-11 2019-04-10 LA (Linear Adjustment) Dev. Limited Telescopic support device for furniture
WO2020055836A1 (en) * 2018-09-11 2020-03-19 Midmark Corporation Mobile workstation with adjustable height

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568808A (en) * 1983-04-29 1986-02-04 Alsthom-Atlantique Telescopic isolating switch
DE3509761A1 (en) * 1985-03-19 1986-09-25 Manfred 7032 Sindelfingen Fröhlich Lifting appliance
DE3941067A1 (en) * 1988-12-09 1990-06-13 Zyber Ramani Lifting appts. with telescopic mast - has mast constructed with alternate lengths of round and square section tubes
DE4304553A1 (en) * 1993-02-16 1994-08-18 Zippo Hebetechnik Gmbh Lifting platform, in particular a motor-vehicle lifting platform
DE4322227C1 (en) * 1993-07-03 1994-08-25 Vauth Sagel Gmbh & Co Hospital or nursing bed

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568808A (en) * 1983-04-29 1986-02-04 Alsthom-Atlantique Telescopic isolating switch
DE3509761A1 (en) * 1985-03-19 1986-09-25 Manfred 7032 Sindelfingen Fröhlich Lifting appliance
DE3941067A1 (en) * 1988-12-09 1990-06-13 Zyber Ramani Lifting appts. with telescopic mast - has mast constructed with alternate lengths of round and square section tubes
DE4304553A1 (en) * 1993-02-16 1994-08-18 Zippo Hebetechnik Gmbh Lifting platform, in particular a motor-vehicle lifting platform
DE4322227C1 (en) * 1993-07-03 1994-08-25 Vauth Sagel Gmbh & Co Hospital or nursing bed

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN; & JP 59063242 A (YUNITSUKU KK) 10 April 1984. *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021408A1 (en) * 1998-10-13 2000-04-20 Curt Pettersson Vertically adjustable column
DE10131861A1 (en) * 2001-06-30 2003-01-16 Guenter Noeleken Lifting, tensioning and pressing appliance has pulley block cable fixed to ends of polygonal pipe elements by means of deflector rollers
WO2003030802A2 (en) * 2001-10-08 2003-04-17 Eschmann Holdings Limited Surgical tables
WO2003030802A3 (en) * 2001-10-08 2003-05-22 Eschmann Holdings Ltd Surgical tables
US6779210B1 (en) 2003-03-18 2004-08-24 Hugh Kelly Elevating bed
US8408083B2 (en) 2004-11-17 2013-04-02 Linak A/S Linear actuator
US20130126682A1 (en) * 2011-09-09 2013-05-23 Alan L. Tholkes Computer lift
US9133974B2 (en) * 2011-09-09 2015-09-15 HealthPostures, LLP Computer lift
US9510671B2 (en) 2013-08-19 2016-12-06 Ergotron, Inc. Height adjustable desk system and method
US9808079B2 (en) 2013-08-19 2017-11-07 Ergotron, Inc. Height adjustable desk system and method
US9232855B2 (en) 2013-08-19 2016-01-12 Ergotron, Inc. Height adjustable desk system and method
US9591919B2 (en) 2013-08-19 2017-03-14 Ergotron, Inc. Height adjustable desk system and method
US10039372B2 (en) 2013-08-19 2018-08-07 Ergotron, Inc. Height adjustable desk system and method
EP3035821B1 (en) * 2013-08-19 2018-03-14 Ergotron, Inc. Height adjustable desk system and method
GB2533437B (en) * 2015-03-12 2017-05-03 Accora Ltd Lifting mechanism
EP3067032A1 (en) * 2015-03-12 2016-09-14 Accora Limited Lifting mechanism
US9743754B2 (en) 2015-07-21 2017-08-29 Ergotron, Inc. Gas spring lift
EP3373768A4 (en) * 2015-11-11 2019-04-10 LA (Linear Adjustment) Dev. Limited Telescopic support device for furniture
US10188566B2 (en) 2016-10-31 2019-01-29 Accora Limited Lifting mechanism
WO2020055836A1 (en) * 2018-09-11 2020-03-19 Midmark Corporation Mobile workstation with adjustable height
US10813450B2 (en) 2018-09-11 2020-10-27 Midmark Corporation Mobile workstation with adjustable height
US11547207B2 (en) 2018-09-11 2023-01-10 Midmark Corporation Mobile workstation with adjustable height

Also Published As

Publication number Publication date
AU9561798A (en) 1999-05-03
NO974725D0 (en) 1997-10-13
NO974725L (en) 1999-04-14

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