DK200700239U3 - An electric height adjustable table - Google Patents

An electric height adjustable table Download PDF

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Publication number
DK200700239U3
DK200700239U3 DK200700239U DKBA200700239U DK200700239U3 DK 200700239 U3 DK200700239 U3 DK 200700239U3 DK 200700239 U DK200700239 U DK 200700239U DK BA200700239 U DKBA200700239 U DK BA200700239U DK 200700239 U3 DK200700239 U3 DK 200700239U3
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DK
Denmark
Prior art keywords
table according
tilt
drive unit
height adjustable
inclinometers
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Application number
DK200700239U
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Danish (da)
Inventor
Rasmussen Soeren Hother
Frost John
Original Assignee
Linak As
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Priority to DK200700239U priority Critical patent/DK200700239U3/en
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Publication of DK200700239U3 publication Critical patent/DK200700239U3/en

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Description

1DK 2007 00239 U31DK 2007 00239 U3

Et elektrisk højdeindstilleligt bord Nærværende opfindelse angår et elektrisk højde indstilleligt bord af den i indledningen til krav 1 angiven art.This invention relates to an electrical height adjustable table of the kind set forth in the preamble of claim 1.

Under sænkning kan der være risiko for, at bordpladen støder mod en vindueskarm, en hylde, et nabobord eller anden fast genstand. Herved kan bordpladen komme til at hænge på den faste genstand, idet bordbenet nu trækkes op fra gulvet, i stedet for at bordpladen sænkes. Særlig ubehageligt er det for brugeren, såfremt vedkommende sidder med korslagte ben og bordpladen med sin vægt kommet til at hvilke herpå. Under hævning af bordet kan bordpladen omvendt blive blokeret af en fast genstand, hvilket bevirker at den modsatte ende af bordpladen fortsat forsøger at hæve sig.During lowering, there may be a risk of the countertop colliding with a window sill, shelf, neighboring table or other solid object. In this way, the worktop may hang on the fixed object as the worktop is now pulled up from the floor, instead of the worktop lowered. It is particularly uncomfortable for the user if he or she sits with crossed legs and the table top with its weight comes to rest on it. On the other hand, while raising the table, the countertop may be blocked by a fixed object, causing the opposite end of the countertop to continue to rise.

For at løse dette kollisionsproblem er nogle borde udstyret med en beskyttelsesforanstaltning, der kan deles op i en blokeringsbeskyttelse og en klemningsbeskyttelse. Blokeringsbeskyttelsen tager som udgangspunkt sigte på at beskytte selve bordkonstruktionen, mens en klemningsbeskyttelse som udgangspunkt tager sigte på at beskytte det objekt, der utilsigtet kommer ind i bordpladens bevægelsesbane. Her tænkes først og fremmest på undgåelse af legemsbeskadigelse af brugeren eller personer, som opholder sig ved bordet. Blokeringsbeskyttelsen er typisk måling af overstrøm, der er overtaget direkte med aktuatorer, der benyttes som drivenhed. Klemningsbeskyttelsen er derimod udviklet specielt til bordene, og kan f.eks. være baseret på en vejecelle som i SE 516 479 C2 Artektron AB eller et piezoelement som i WO 03/056976 Al Linak A/S. Disse konstruktioner er dog mere komplicerede og dyrere løsninger, og derved strider mod 2 2DK 2007 00239 U3 et stadigt øget prispres indenfor bordmarkedet. Der kendes også andre og simplere løsninger, som f.eks. fra US 5 495 811 Ergoflex Systems, USA hvori angives to forskellige løsninger, en hvor bordpladen ligger løst i en ramme og hviler på en elektrisk kontakt. Såfremt bordpladen i nedadgående retning møder en hindring løftes bordpladen og kontakten aktiveres til afbrydelse af strømmen til motoren. Uhensigtsmæssigt hviler bordpladen med hele sin vægt og belastning (som retningslinie lOOkg) på det objekt, der er kommet i klemme. Løsningen tager heller ikke højde for, at den bærende ramme støder mod en hindring, og er heller ikke virksom i bordpladens opadgående retning. Den anden løsning baserer sig på de såkaldte tape-switches, som klæbes på undersiden af bordet. For at være virksom betinger det, at tape-switchen rammer hindringer, og løsningen er heller ikke virksom i bordets opadgående retning.To solve this collision problem, some tables are equipped with a protective measure that can be divided into a blocking guard and a pinch guard. The blocking protection is basically aimed at protecting the table structure itself, while a clamping protection is basically aimed at protecting the object that inadvertently enters the movement path of the table top. Here, first and foremost, we think of avoiding bodily harm by the user or persons staying at the table. The blocking protection is typically the measurement of overcurrent taken directly by actuators used as a drive. The clamp guard, on the other hand, is designed specifically for the tables, and can for example. be based on a weighing cell as in SE 516 479 C2 Artektron AB or a piezo element as in WO 03/056976 Al Linak A / S. However, these designs are more complicated and more expensive solutions, thus contravening the 2 2DK 2007 00239 U3 an ever increasing price pressure within the table market. Other and simpler solutions are known, such as e.g. from US 5 495 811 Ergoflex Systems, USA wherein two different solutions are indicated, one in which the tabletop is loosely mounted in a frame and rests on an electrical contact. If the worktop faces downwards, an obstacle is lifted and the switch is activated to disconnect the motor power. Inconveniently, the countertop with all its weight and load (as guideline 100kg) rests on the object that is clamped. The solution also does not take into account that the load-bearing frame encounters an obstruction, nor does it operate in the upward direction of the countertop. The second solution is based on the so-called tape switches, which are glued to the underside of the table. To be effective, it means that the tape switch hits obstacles, and the solution is also not working in the upward direction of the table.

Problematikken omkring en klembeskyttelse er særdeles vanskelig på grund af de varierende kraftforhold under normal brug. Belastningen kan således variere fra gang til gang afhængig af den øjeblikkelige last på bordpladen, men den kan også ændres under indstillingen ved, at der fjernes eller lægges noget på bordet. Desuden er belastningen typisk ujævnt fordelt, eksempelvis i form af en computer, papirstabler etc. Hertil kommer en ukontrolleret gnidningsmodstand i benene, der igen er følsom overfor momentbelastning på bordpladen.The problem of clamp protection is extremely difficult due to the varying power conditions under normal use. The load can thus vary from time to time depending on the immediate load on the countertop, but it can also be changed during the setting by removing or putting something on the table. In addition, the load is typically unevenly distributed, for example in the form of a computer, paper stacker, etc. In addition, an uncontrolled rubbing resistance in the legs, which in turn is sensitive to torque load on the table top.

Formålet med opfindelsen er at anvise en yderligere beskyttelsesforanstaltning ved højdeindstillelige borde.The object of the invention is to provide a further protective measure at height adjustable tables.

Dette opnås ifølge opfindelsen ved at udstyre bordet med en tiltanordning, der bevirker standsning af drivenheden(erne) såfremt bordet kommer til at indtage en 3 3DK 2007 00239 U3 hældende stilling. Med erkendelsen af opfindelsen kan den realiseres på mange forskellige måder, eksempelvis kan tiltanordning anbringes på en vandret del af bordet, som f.eks. bordpladen, en sarge hvor sådan forefindes eller i fødderne. Alternativt kan tiltanordning anbringes på en lodret del, hvor benene er en oplagt placering. Hvorledes tiltanordning bringer drivenhederne til standsning kan også realiseres på forskellig måde, hvor det vil være oplagt at forbinde sensoren til Styreenheden, men der kan også placeres en separat kontakt i netkablet, der afbryder strømmen. Som tiltanordning kan anvendes tiltsensorer og inclinometre (accelerometer, kapasitiv, elektrolytisk, gasblære i væske, kviksølv, pendul). I alt sin enkelthed kunne det også være en simpel kontakt under fødderne, som afbryder strømmen, såfremt en fod slipper gulvet.This is achieved according to the invention by equipping the table with a tilting device which causes the drive unit (s) to stop if the table takes a tilting position 3 3DK 2007 00239 U3. With the recognition of the invention, it can be realized in many different ways, for example, tilting device can be placed on a horizontal part of the table, such as e.g. the table top, a sarge where present or in the feet. Alternatively, the tilting device can be placed on a vertical part where the legs are an obvious location. How the tilt device brings the drive units to a standstill can also be realized in different ways where it will be obvious to connect the sensor to the control unit, but a separate contact can also be placed in the mains cable which cuts the power. Tilt sensors and inclinometers (accelerometer, capacitive, electrolytic, liquid gas bladder, mercury, pendulum) can be used as a tilt device. In all its simplicity, it could also be a simple contact under the feet, which cuts off the power if a foot drops the floor.

Det er imidlertid også indset, at man kan udnytte styringen, når denne er forsynet med ekstra porte, idet en tiltsensor eller inclinometer indbygges i en dongel for indsætning i den ekstra port. Det forholder sig sådan, at styringen typisk monteres under bordpladen og med tiltanordningen udformet som en dongel er man fri for større indgreb samtidig med, at beskyttelsesforanstaltningen kan udmøntes i en ad-on feature.However, it has also been realized that the control can be utilized when it is provided with extra gates, as a tilt sensor or inclinometer is built into a dongle for insertion into the extra gate. It is the case that the control is typically mounted under the countertop and with the tilt device designed as a dongle, one is free from major interference while the protective measure can be implemented in an ad-on feature.

En udførelsesform for opfindelsen i form af et højdejusterbart bord skal i det følgende forklares nærmere under henvisning til medfølgende tegning.An embodiment of the invention in the form of a height adjustable table will be explained in more detail below with reference to the accompanying drawing.

På tegningen viser:In the drawing:

Fig. 1, et højdeindstilleligt bord, og fig. 2, styring med dongel 4 4DK 2007 00239 U3FIG. 1, a height adjustable table; and FIG. 2, control with dongle 4 4GB 2007 00239 U3

Det på fig. 1 viste højdeindstilleligt bord i form af et sidde/stå skrivebord omfatter en løftesøjle 1 ved hver ende og består af tre indbyrdes teleskopiske led 2a,b,c. Søjlernes bevægelse udvirkes af en indbygget drivenhed 8, som trækkes af en elmotor 10, der er tilsluttet en kontrolboks 6 med en strømforsyning. Boksen indeholder ligeledes en styring, som aktiveres med et kontrolpanel 7 anbragt ved bordets forkant. Styringen kan være baseret på drejepotentiometre, optiske eller magnetiske enkodere til fastlæggelse af bordpladens højde eller rent elektronisk som angivet i WO 02/091539.The FIG. 1, the height adjustable table in the form of a sitting / standing desk comprises a lifting column 1 at each end and consists of three mutually telescopic links 2a, b, c. The movement of the columns is effected by a built-in drive unit 8, which is pulled by an electric motor 10 connected to a control box 6 with a power supply. The box also contains a control which is activated by a control panel 7 located at the front of the table. The control may be based on rotary potentiometers, optical or magnetic encoders for determining the height of the worktop or purely electronically as specified in WO 02/091539.

På fig. 2 er kontrolboksen 6 vist med netkabel 3 og to ledninger 4 til drivenhederne 8. Desuden er der vist en dongel 5, hvori der er indbygget en tiltsensor. Nærmere bestemt er dongien udformet som et Modular Jack (RJ45 connector), der kan indsættes i en dertil beregnet port 9 i kontrolboksen, der monteres under bordpladen. Dongien og styringen er udformet således, at strømmen til motorerne afbrydes, så snart tiltsensoren registrere, at bordpladen begynder at hælde, uanset om det er et resultatet af, at bordpladen med undersiden hænger på en forhindring eller med oversiden er stødt op mod en forhindring. Ved fortsat aktivering i samme retning forbliver strømmen til drivenhederne afbrudt. Kun en aktivering i modsat retning, hvor bordpladen kører fri af hindringen kan lade sig gøre.In FIG. 2, the control box 6 is shown with mains cable 3 and two wires 4 for the drive units 8. In addition, a dongle 5 is shown in which there is a tilt sensor. Specifically, the dongi is designed as a Modular Jack (RJ45 connector) that can be inserted into a designated port 9 of the control box mounted below the countertop. The Dongi and steering are designed so that the power to the motors is interrupted as soon as the tilt sensor detects that the worktop starts to slope, whether it is the result of the worktop with its underside hanging on an obstacle or the obverse encountered an obstacle. If continued activation in the same direction, the power to the drives remains interrupted. Only an activation in the opposite direction, where the table top moves free of the obstruction can be done.

Denne tiltanordning skal ses som en ekstra beskyttelse da bordet samtidig er forsynet med en traditionel klembeskyttelsesanordning, som f.eks. måling af overstrøm. Der er desuden den oplagte ekstra sikkerhed med to uafhængige beskyttelsesanordninger. Det skulle være temmelig usandsynlig, hvis begge svigter på samme situation eller samme tid.This tilt device should be seen as an extra protection since the table is also provided with a traditional clamp protection device, such as measurement of overcurrent. There is also the obvious extra security with two independent protective devices. It should be pretty unlikely if both fail at the same situation or the same time.

Claims (9)

1. Et elektrisk højdeindstilleligt bord omfattende: et højdeindstilleligt understel (11), en bordplade(12) arrangeret på understellet, mindst en drivenhed (8) til udvirkning af højdeindstillingen af understellet (11)/bordpladen (12) idet drivenheden er fastgjort henholdsvis til bordpladen og understellet, og hvor drivenheden omfatter mindst en elmotor (10) til drift heraf, en styreenhed (6) til styring af driveenheden, og en betjening (7) til aktivering af styreenheden kendetegnet ved, at bordet omfatter en tiltanordning, der bevirker standsning eller reversering og derefter standsning af drivenheden såfremt bordet kommer til at indtage en hældende stilling,An electric height adjustable table comprising: a height adjustable base (11), a table top (12) arranged on the base, at least one drive unit (8) for effecting the height adjustment of the base frame (11) / table top (12), the drive unit being fixed respectively to the table top and the chassis, and wherein the drive unit comprises at least one electric motor (10) for operation thereof, a control unit (6) for controlling the drive unit, and a control (7) for activating the control unit, characterized in that the table comprises a tilting device which causes stopping or reversing and then stopping the drive unit if the table is in a sloping position, 2. Bord ifølge krav 1, kendetegnet ved, at tiltanordningen kan anbringes på en horisontal del af bordet, fx bordpladen eller en sarge hvor en sådan forefindes.Table according to claim 1, characterized in that the tilting device can be placed on a horizontal part of the table, for example the table top or a coffin where such is provided. 3. Bord ifølge krav 1, kendetegnet ved, at tiltanordningen anbringes på en fod/fødder.Table according to claim 1, characterized in that the tilt device is placed on one foot / feet. 4. Bord ifølge krav 3, kendetegnet ved at tiltanordningen omfatter en kontakt under mindst en fod.Table according to claim 3, characterized in that the tilt device comprises a contact of at least one foot. 5. Bord ifølge krav 1, kendetegnet ved, at tiltanordningen anbringes på en lodret del, fx et eller flere ben.Table according to claim 1, characterized in that the tilting device is arranged on a vertical part, for example one or more legs. 5 5DK 2007 00239 U35 5DK 2007 00239 U3 6. Bord ifølge krav 1, kendetegnet ved, at tiltanordningen omfatter en eller flere tiltsensorer DK 2007 00239 U3 6 eller inclinometre fx accelerometer, kapasitiv, elektrolytisk, gasblære i væske, kviksølv eller pendul.Table according to claim 1, characterized in that the tilt device comprises one or more tilt sensors or inclinometers, for example, accelerometer, capacitive, electrolytic, gas bladder in liquid, mercury or pendulum. 7. Bord ifølge krav 6, kendetegnet ved, at 5 tiltsensorerne eller inclinometrene er forbundet til styreenheden.Table according to claim 6, characterized in that the 5 tilt sensors or inclinometers are connected to the control unit. 8. Bord ifølge krav 6, kendetegnet ved, at tiltsensorerne eller inclinometrene er forsynet med en 10 separat kontakt til afbrydelse af strømmen i netkablet.Table according to claim 6, characterized in that the tilt sensors or inclinometers are provided with a separate switch for interrupting the current in the mains cable. 9. Bord ifølge krav 1, kendetegnet ved, at tiltanordningen er udformet som en dongel (5) beregnet til montering i en port (9) i styringen (6). 15Table according to claim 1, characterized in that the tilt device is designed as a dongle (5) for mounting in a port (9) in the guide (6). 15
DK200700239U 2007-09-12 2007-09-12 An electric height adjustable table DK200700239U3 (en)

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