NO873466L

NO873466L - DEVICE FOR LIFTING, LOWERING AND / OR SCRAPING OF TABLETS O.L.

Info

Publication number: NO873466L
Application number: NO873466A
Authority: NO
Inventors: Lauri Koistinen
Original assignee: Lauri Koistinen
Priority date: 1986-09-15
Filing date: 1987-08-18
Publication date: 1988-03-16
Also published as: FI873913A; NO873466D0; FI873913A0; DE3727759A1; FR2603781A1; SE8605179L; GB8720445D0; SE8605179D0; GB2196606A; SE454401B

Description

Oppfinnelsen gjelder en anordning av det slaget som er angitt i innledningen til patentkrav 1, for å heve, senke og/eller skråstille gjenstander, såsom bordplater, skuffer o.l. The invention relates to a device of the kind stated in the introduction to patent claim 1, for raising, lowering and/or tilting objects, such as table tops, drawers etc.

Hovedformålet med oppfinnelsen er i første rekke å skaffe en anordning av dette slaget som er så kompakt, at den kan bygges inn i eksempelvis et skrivebord, for å påvirke ei plate i dette eller en pult, og videre er enkel, robust og prisbillig og så fleksibel med hensyn til innbygningen, at den lett kan tilpasses til vidt forskjellige behov. The main purpose of the invention is primarily to provide a device of this kind which is so compact that it can be built into, for example, a desk, to influence a plate in it or a desk, and furthermore is simple, robust and inexpensive and so flexible with regard to the installation, that it can be easily adapted to widely different needs.

Et annet formål har vært å skape en anordning hvor gjenstandens hevning eller senkning oppnås med en enkel forskyvningsbevegelse og med mulighet til å låse anordningen enkelt i ønsket løfteposisjon. Another purpose has been to create a device where the raising or lowering of the object is achieved with a simple displacement movement and with the possibility of easily locking the device in the desired lifting position.

Dette kan oppnås ved hjelp av den oppfinnelsen som er beskrevet i patentkravene. This can be achieved by means of the invention described in the patent claims.

Oppfinnelsen er beskrevet nærmere nedenfor under henvisning til tegningene, hvor: fig. 1 viser ovenfra et eksempel på en utførelsesform, fig. 2 viser samme anordning sett skrått forfra, The invention is described in more detail below with reference to the drawings, where: fig. 1 shows from above an example of an embodiment, fig. 2 shows the same device seen obliquely from the front,

fig. 3 viser anordningen i samsvar med fig. 1 og 2 innebygd i et skrivebord, mens fig. 3 shows the device in accordance with fig. 1 and 2 built into a desk, while

fig. 4 viser perspektivriss av en skuffeløfter som er utformet i samsvar med oppfinnelsen. fig. 4 shows a perspective view of a drawer lifter which is designed in accordance with the invention.

Anordningen som er vist i fig. 1-2 omfatter en hovedsakelig rektangulær stativdel, som er gitt henvisningstall 1. Den omfatter ved den viste utførelsesformen to første hylser 2a, 2b, som er innbyrdes forbundet ved hjelp av ei stang eller skinne 3 som strekker seg på tvers av hylsenes lengderetning og hvor det er forskyvbart anordnet en løpevogn 4. The device shown in fig. 1-2 comprises a mainly rectangular stand part, which is given the reference number 1. In the embodiment shown, it comprises two first sleeves 2a, 2b, which are interconnected by means of a rod or rail 3 which extends across the longitudinal direction of the sleeves and where a running carriage 4 is displaceably arranged.

I forhold til hylsene 2a, 2b er det forskyvbart anordnet to bjelker 5a, 5b, som kan låses i en vilkårlig forskyvningsstilling i forhold til hylsene 2a, 2b. In relation to the sleeves 2a, 2b, two beams 5a, 5b are displaceably arranged, which can be locked in an arbitrary displacement position in relation to the sleeves 2a, 2b.

Bjelkene 5a, 5b er ført gjennom to andre hylser 6a, 6b, som i likhet med de første hylsene 2a, 2b kan låses i en vilkårlig forskyvningsstilling i forhold til bjelkene 5a henholdsvis 5b. Sammen danner disse delene ei rektangulær ramme, med varierbar bredde. The beams 5a, 5b are passed through two other sleeves 6a, 6b, which, like the first sleeves 2a, 2b, can be locked in an arbitrary displacement position in relation to the beams 5a and 5b, respectively. Together, these parts form a rectangular frame, with variable width.

Med 7 betegnes generelt to løftearmskonstruksjoner, som hver består av to armer 8a, 8a' henholdsvis 8b, 8b', som er svingbart opplagret på hver sin hylse 6a, henholdsvis 6b, om hovedsakelig horisontale svingeaksler 9a, 9b. I de ytre ender av armene 8a, 8a' er det ført gjennom en sammenbindende, tversgående aksel 10a, som bærer roterbart et antall bæreruller lia, som har en slik diameter at de rager utenfor armenes endeparti. På tilsvarende måte er det gjennom armene 8b og 8b' ført en aksel 10b, som bærer bæreruller 11b. 7 generally denotes two lifting arm constructions, each of which consists of two arms 8a, 8a' and 8b, 8b' respectively, which are pivotably supported on respective sleeves 6a, 6b respectively, about mainly horizontal pivot shafts 9a, 9b. At the outer ends of the arms 8a, 8a', a connecting, transverse shaft 10a is passed through, which rotatably carries a number of bearing rollers 11a, which have such a diameter that they project beyond the end portion of the arms. In a similar way, a shaft 10b, which carries support rollers 11b, is guided through the arms 8b and 8b'.

Med armene8a og 8b' er det dreiefast forbundet to leddarmer 12a henholdsvis 12b, og ved 13a henholdsvis 13b er disse leddbart forbundet med ledd 14a, 14b, som i sine motsatte ender ved 15a, 15b er leddforbundet med en arra 16, som mellom leddpunktene 15a, 15b er svingbart lagret om en hovedsakelig vertikal aksel 17, som rager opp fra ei bunnskinne 18 som forbinder hylsene 6a, 6b. Two joint arms 12a and 12b are rotatably connected to the arms 8a and 8b', and at 13a and 13b respectively, these are hingedly connected to joints 14a, 14b, which at their opposite ends at 15a, 15b are articulated with an array 16, which between the joint points 15a , 15b is pivotally mounted about a mainly vertical shaft 17, which projects from a bottom rail 18 which connects the sleeves 6a, 6b.

Armen 16 er forskyvbart opplagret i en hylseformet delThe arm 16 is displaceably stored in a sleeve-shaped part

19, som ved 20 er leddforbundet med vogna 4, idet denne har delvis en låseskrue 21 som virker mot en ikke vist bjelke og delvis et betjeningshåndtak 22. 19, which at 20 is articulated with the carriage 4, as this partly has a locking screw 21 which acts against a beam not shown and partly an operating handle 22.

Ei fjør 23, som med sin ene ende griper om akselen 9a, griper med sin andre ende om armen 16. Fjørstyrken er herunder tilpasset slik, at den utøver ei kraft på armen 16, for å svinge denne raoturs, som er bare litt mindre enn den krafta som løftearm-systemet 7-10 og gjenstanden som bæres av dette utøver på armen 16 og som forsøker å svinge armen i med-ursretning. Disse kreftene vil dermed i stor utstrekning kompensere hverandre, slik at det bare kreves ei lav kraft for å svinge betjeningsarmen, og dermed, som det går fram av det følgende, å svinge opp løftearmkonstruksjonen. A spring 23, which with its one end grips the shaft 9a, grips with its other end the arm 16. The spring force is adapted below so that it exerts a force on the arm 16, to swing it clockwise, which is only slightly less than the force which the lifting arm system 7-10 and the object carried by it exerts on the arm 16 and which tries to swing the arm in a clockwise direction. These forces will thus largely compensate each other, so that only a low force is required to swing the operating arm, and thus, as is clear from the following, to swing up the lifting arm structure.

I utgangsstillingen befinner løftearmen 8a, 8a', 8b, 8b' seg nedfellt med bærerullene plassert under stativdelens øvre flate og i denne stillingen er det bare leddarmene 12 og leddene 14 som befinner seg under stativdelens nedre plan. In the initial position, the lifting arm 8a, 8a', 8b, 8b' is folded down with the support rollers placed under the upper surface of the stand part and in this position only the joint arms 12 and joints 14 are located under the lower plane of the stand part.

Dersom man ønsker å løfte en gjenstand, f.eks. ei bordplate som hviler på stativdelen, fører en bare vogna 4 mot venstre i fig. 1 ved hjelp av håndtaket 22. Dermed vil armen 16 svinge medurs ora sitt svingesentrum 17. Over leddene 14a, 14b og leddarmene 12a, 12b vil dermed løftearmkonstruksjonen bli svinget opp i retningen som er vist med piler i fig. 2, slik at den delen som hviler på bærerullen 11 vil bli løftet. Når ønsket høydestilling er nådd, låses vogna 4 på den nevnte, men ikke viste skinna ved hjelp av låsehåndtaket 21. Ved at armen 16 som nevnt er forskyvbart anordnet i hylsa 19, danner armen og hylsa sammen en armkonstruksjon som kan brukes for det beskrevne formålet, fordi den må kunne endre lengde under den omstillingen som er beskrevet ovenfor. If you want to lift an object, e.g. a table top that rests on the stand part, a bare carriage 4 moves to the left in fig. 1 by means of the handle 22. Thus, the arm 16 will swing clockwise or its swing center 17. Over the joints 14a, 14b and the joint arms 12a, 12b, the lifting arm construction will thus be swung up in the direction shown by arrows in fig. 2, so that the part resting on the carrier roll 11 will be lifted. When the desired height position has been reached, the carriage 4 is locked onto the rail mentioned, but not shown, by means of the locking handle 21. By the fact that the arm 16, as mentioned, is displaceably arranged in the sleeve 19, the arm and the sleeve together form an arm structure that can be used for the described purpose , because it must be able to change length during the adjustment described above.

Fig. 3 viser en første praktisk utnyttelse. Her er et bord 24, med et stålrørstativ og to plane bordplater som er festet med innbyrdes avstand, blitt komplettert med en anordning av det beskrevne slaget plassert mellom bordplatene. På denne anordningen er det plassert en enhet 25 som består av to innbyrdes sammenhengslete plater, av hvilke den bakre er anordnet for å heves og senkes av anordningen. Fra en plan stilling kan denne enheten heves til den som er vist i fig. 3, hvor den fremste plata blir skråttstilt for å danne en skrivepult med ønsket hevning. Fig. 3 shows a first practical use. Here, a table 24, with a steel pipe stand and two flat table tops which are fixed at a distance from each other, has been completed with a device of the described kind placed between the table tops. On this device is placed a unit 25 which consists of two interconnected plates, the rear of which is arranged to be raised and lowered by the device. From a level position, this unit can be raised to that shown in fig. 3, where the front plate is tilted to form a writing desk with the desired elevation.

En annen praktisk tilpasning er vist i fig. 4. Her er anordningen utformet slik, at den danner en anordning 26 for løfting av skuffer. En slik anordning omfatter fire ben 27 som er vinkelformet og hver har ei øvre bæreplate 28. Disse benenes horisontale deler kan herunder føres inn i bjelker 29, med rektangulært, rørformet tverrsnitt, og fastlåses til disse bjelkene som er innbyrdes forbundet ved hjelp av ei bunnskinne som tilsvarer bunnskinna 18 beskrevet ovenfor. Another practical adaptation is shown in fig. 4. Here, the device is designed so that it forms a device 26 for lifting drawers. Such a device comprises four legs 27 which are angular and each has an upper support plate 28. The horizontal parts of these legs can then be inserted into beams 29, with a rectangular, tubular cross-section, and locked to these beams which are interconnected by means of a bottom rail which corresponds to the bottom rail 18 described above.

Ei frontskinne 90, hvor vogna 4 er forskyvbart anordnet, har utragende partier 31, 31a, 31b som er beregnet for å hvile mot de fremre benenes 27 bæreplater og være forenet med dem ved hjelp av skruer e.l., og for å tillate manøvrering i samsvar med dette, er armen 16<*>knekket oppover som vist i fig. 4. A front rail 90, where the carriage 4 is displaceably arranged, has projecting parts 31, 31a, 31b which are intended to rest against the front legs 27 carrier plates and to be united with them by means of screws or the like, and to allow maneuvering in accordance with this, the arm 16<*> is bent upwards as shown in fig. 4.

Svingarmskonstruksjonenes 7 armer 8a, 8a', kan ha en annen lengde enn armene 8b, 8b'. Armene 8a, 8a', 8b, 8b' kan ha vinkelform, idet det ene vinkelbenet erstatter<1>hver sin leddarm, henholdsvis 12a, 12b. The 7 arms 8a, 8a' of the swing arm structures can have a different length than the arms 8b, 8b'. The arms 8a, 8a', 8b, 8b' can have an angular shape, with one angular leg replacing<1>each joint arm, 12a, 12b respectively.

Claims

1. Device for raising, lowering and/or tilting objects, such as table tops, drawers etc., characterized in that it has two mutually parallel, mainly horizontal shafts (9a, 9b) pivotably mounted lifting arm units (7) and one positioned between these shafts about a mainly vertically located storage point (17) swingably mounted maneuvering arm (16) and that first and second articulated structures (12a,14a,12b,14b) are articulated on one side to the maneuvering arm, one (12a,14a) on one side of the arm's storage point (17) and the other (12b,14b) on the opposite side, to each of the lifting arm units (7) so that when the maneuvering arm (16) swings in one direction, these will swing up and when the maneuvering arm swings in the opposite direction, they will swing down, thereby raising, lowering and/or tilting the object.

2. Device in accordance with patent claim 1, characterized in that each lifting array construction has two arms (8a, 8a' and 8b, 8b' respectively) which have their free ends mutually connected and have support rollers (lia, 11b) designed to directly support the object to be raised, lowered and/or tilted.

3. Device in accordance with patent claim 1, characterized in that the lifting arms (8a, 8b') which form part of the lifting arm construction (7) are rotatably connected to articulated arms (12a, 12b) which in turn are articulated with joints (14a, 14b) which are articulated at their opposite ends with the maneuvering arm (16) one on each side of its center of rotation.

4. Device in accordance with patent claim 1, characterized in that the maneuvering arm (16,19) is articulated and limited displaceably connected to a carriage (4) which can be displaced along a mainly horizontal rail (3), so that displacement of the carriage results in oscillation of the maneuvering arm and thus a raising or lowering of the object .

5. Device in accordance with patent claim 4, characterized in that the maneuvering arm consists of two mutually telescopically displaceable parts (16,19), one of which is articulated with the carriage (4) and the other is supported on a shaft (17) which projects upwards from the device's stationary part (18).

6. Device in accordance with patent claims 1-4, characterized in that the carriage (4) has a locking device (21) for fixation in an arbitrary displacement position.

7. Device in accordance with patent claim 1, characterized in that a coil spring (23) is connected to the maneuvering arm (16) in such a way that it will swing this in a direction opposite to the swinging tendency that the lifting arm structure exerts on the arm, and that the spring is dimensioned so that it mainly counteracts the impact from the lifting arm structure (7).

8. Device in accordance with patent claim 1, characterized in that it is arranged to be carried on a table stand and to carry a unit (25), such as a table top.

9. Device in accordance with patent claim 8, characterized in that the unit (25) consists of a front and a rear table plate, which are articulated by means of a hinge and that the lifting arm structure is arranged to act only on the rear plate to achieve an inclined position of the front when the rear plate is raised.

10. Device in accordance with patent claim 1, characterized in that it has a stand (26), with two rectangular tubular beams (29) which are mutually connected by a perpendicularly extending bottom rail (18), and partly four legs (27) which are L-shaped and whose vertical parts are terminated upwards with support plates (28) while their horizontal parts are insertable into and lockable in relation to the beams (29), a rail (30) being attached to the support plates to the two aforementioned legs, as well as constituting the steering for a cart (4) which is controlled in the longitudinal direction of the rail and which is hingedly connected to an angle-bent maneuvering arm (16') for maneuvering the lifting arm structure (7).