DK174034B1

DK174034B1 - Multifunctional transporting and seating arrangement, especially for the transport and use of double basses, and method for the adjustment thereof

Info

Publication number: DK174034B1
Application number: DK199900485A
Authority: DK
Inventors: Marc Paul Grue
Original assignee: Marc Paul Grue
Priority date: 1999-04-14
Filing date: 1999-04-14
Publication date: 2002-04-29
Also published as: DK199900485A

Description

i DK 174034 B1in DK 174034 B1

Opfindelsen angår en multifunktionel transport- og siddeanord-ning fortrinsvis til transport og brug af kontrabasser. I egenskab af transportredskab er anordningen af den art, der består af to hjul på en hjulaksel·, der er forbundet til et stel 5 med en i det væsentlige vandret bæreflade og en lodret støtteflade, hvortil kontrabassen henholdsvis hviler på og spændes med siden ind imod. I egenskab af stol er anordningen af den art, der består af et trebenet højdeindstilleligt udfoldeligt stolestel med et aftageligt sæde.The invention relates to a multifunctional transport and seating arrangement, preferably for transport and use of double basses. As a transport tool, the device is of the type consisting of two wheels on a wheel axle · which is connected to a frame 5 with a substantially horizontal support surface and a vertical support surface, to which the double bass rests and is tensioned laterally towards . As a chair, the device is of the kind that consists of a three-legged height-adjustable folding chair frame with a removable seat.

1010

Kontrabassister transporterer idag deres kontrabas ved at bære den på forskellige måder eller ved at bruge forskellige kendte hjulsystemer.Contrabassists today transport their contrabass by carrying it in different ways or by using various known wheel systems.

15 Kontrabassen bæres f.eks. i de på kontrabasbetrækket påsyede håndtag med den ene arm foran kroppen, hvor armen er i en næsten vandret vinkel ud fra kroppen på grund af kontrabassens store størrelse. Tillige bæres kontrabasser i en sele over skulderen, som f.eks. griber fat forneden omkring kontrabassens 20 pind og foroven om halsen på kontrabassen, eller som griber fat i påsyede øjer på betrækket. Dette giver et skævt træk over den ene skulder. Da kontrabassen typisk vejer mellem 15 og helt op til 30 kg med betræk, noder, nodestativ, bue m.m., er begge bæremåder særdeles fysisk belastende for kroppen.The double bass is carried e.g. in the handles on the double bass cover with one arm in front of the body, the arm being at an almost horizontal angle from the body due to the large size of the double bass. In addition, double basses are worn in a harness over the shoulder, such as grabs the bottom of the double bass 20 pins and top of the neck of the double bass, or grabs the sewing eyes on the cover. This gives a lopsided pull over one shoulder. Since the double bass typically weighs between 15 and up to 30 kg with cover, nodes, node stand, bow etc., both modes are extremely physically stressful to the body.

25 På nogle kontrabasbetræk er der tillige påsyet to skulderremme, så man kan bære kontrabassen på ryggen som en kæmpe rygsæk. Her er trækket fordelt lige på begge skuldre, men kontrabassen rager så højt i vejret, at man skal dukke sig, hver gang man 30 skal ind og ud af døre, hvilket er meget upraktisk, og en konstant risiko for beskadigelse af kontrabassen, hvis man bare en enkelt gang skulle glemme at dukke sig eller fejlbedømmer højden af en passage.25 On some double bass covers, two shoulder straps are also sewn, so you can carry the double bass on your back like a giant backpack. Here the cover is distributed equally on both shoulders, but the double bass protrudes so high that you have to show up every time you have to go in and out of doors, which is very impractical and a constant risk of damage to the double bass if you just once should forget about showing up or misjudging the height of a passage.

^ 35 Desuden findes forskellige hjulsystemer til transport af kontrabassen, som f.eks. to hjul monteret på en buet plade, der passer til rundingen på siden af kontrabassen, og som fæstnes med en elastik fra pladen ned til pinden og en elastik op om 2 DK 174034 B1 kontrabassens hals, eller fæstnes med velcro som hæftes ind mod kontrabasbetrækkets påsyede velcro, eller er fastsyet til kontrabasbetrækket. Hjulene på dette system er meget små (ca. 8 cm i diameter) og massive, hvilket ved transport på fortov og 5 lignende giver mange små hårde rystelser, der forplanter sig op mod kontrabassen. Da træet på siderne af kontrabassen er ca. 3 mm tykt, og den kan være op mod 300 år gammel, er den meget følsom overfor disse rystelser og stød. Hjulenes lille størrelse kan ved transport udendørs derfor nemt forårsage ίο skader på kontrabassen i form af, at bl.a. limningerne mellem siden og dækket/bagsiden går op og forårsager skader, der skal repareres. Især ældre kontrabasser er meget følsomme både konstruktionsmæssigt og klangmæssigt overfor disse skader.^ 35 In addition, there are various wheel systems for transporting the double bass, such as. two wheels mounted on a curved plate that fits the rounding on the side of the double bass and which is fastened with an elastic from the plate down to the stick and an elastic up around the neck of the double bass, or fastened with velcro that is attached to the side of the double bass cover velcro, or is sewn to the double bass cover. The wheels of this system are very small (about 8 cm in diameter) and massive, which, when transported on sidewalks and the like, gives many small hard shakes that propagate up towards the double bass. Since the tree on the sides of the double bass is approx. 3 mm thick and can be up to 300 years old, it is very sensitive to these shakes and shocks. The small size of the wheels can therefore easily cause damage to the double bass when transported outdoors. the seams between the side and the tire / back side go up causing damage to be repaired. In particular, older double basses are very sensitive in terms of both design and sound to these injuries.

15 Tillige findes en transportanordning bestående af et enkelt hjul monteret på en pind, som skydes op i det hul, hvor kontrabassens normale pind er, hvorved denne skal tages ud, for at hjulsystemet kan isættes og anvendes. Denne transportløsning er problematisk, idet kontrabassen ikke kan stilles fra sig med 20 hjulet monteret, samt at rystelser fra underlaget forplanter sig direkte op i kontrabassen og har samme eller værre skadelige virkninger på kontrabassen som ovenfor beskrevet.15 There is also a transport device consisting of a single wheel mounted on a stick which is pushed up into the hole where the normal bass of the double bass is, which must be taken out for the wheel system to be inserted and used. This transport solution is problematic because the double bass cannot be set off with the 20 wheel mounted, and that shakes from the substrate propagate directly into the double bass and have the same or worse detrimental effects on the double bass as described above.

Tillige findes forskellige varianter af almindelige sækkevogne 25 eller lignende konventionelle transportvogne til bredere formål, hvortil kontrabassen fastgøres med elastikker og transporteres med. Disse transportvogne er ikke bygget med henblik på transport af så følsom en konstruktion som kontrabassen, idet bærefladen består af nogle få metalrør, 30 hjulene er små og ofte massive, samt at støttefladen ind mod kontrabassens sider ej heller er polstret. Både bærefladen og støttefladerne vil derfor kunne udrette stor skade på kontrabassen, hvorfor denne transportløsning således også må betegnes som særdeles risikofyldt for kontrabassens tilstand.Also available are various variants of ordinary baggage carts 25 or similar conventional carts for wider purposes, to which the double bass is fastened with elastic and transported. These trucks are not built to carry as sensitive a structure as the double bass, the support surface being a few metal tubes, the 30 wheels small and often massive, and the support surface towards the double bass sides not padded either. Both the support surface and the support surfaces can therefore do great damage to the double bass, which is why this transport solution must also be considered extremely risky for the double bass condition.

Foruden de negative konsekvenser, de nævnte transportløsninger har for både kontrabassisten og kontrabassen, har de alle den store ulempe, at kontrabassisten foruden transporten af selve 35 3 DK 174034 B1 kontrabassen må bære den stol, han skal spille på, ved siden af, idet kontrabassister har brug for en høj stol at sidde og spille på, som ikke kan forventes at forefindes på spillestedet.In addition to the negative consequences that the mentioned transport solutions have for both the double bass player and the double bass player, they all have the major disadvantage that the double bass player, in addition to the transport of the double bass player himself, must carry the chair he has to play next to, since double bass players need a high chair to sit and play on that cannot be expected at the venue.

55

Kontrabassister benytter i dag et rigt udvalg af høje stole, lige fra deciderede kontrabasstole med ryglæn og forskellige indstillingsmuligheder over sammenklappelige trominestole til simple taburetter. Da kontrabassen i sig selv er stor, tung og io uhåndterlig er det en stor byrde og særdeles upraktisk også at skulle bære en af disse stole ved siden af, når kontrabassisten skal ud at spille. Man vil derfor ofte skulle gå to gange, eller få andre til at hjælpe sig med at transportere stolen, når man selv transporterer kontrabassen.Contrabassists today use a rich selection of high chairs, ranging from decidedly contrabass chairs with backrests and various adjustment options over collapsible drum chairs to simple stools. Since the double bass itself is large, heavy and io unmanageable, it is a great burden and extremely impractical to also have to carry one of these chairs next to when the double bass player is about to play. You will therefore often have to walk twice, or have others help yourself to transport the chair when transporting the double bass yourself.

1515

Ved opfindelsen tilvejebringes en multifunktionel transport- og siddeanordning, som kontrabassen kan transporteres med, og som, når kontrabassisten når frem til spillestedet, kan omdannes til en høj stol, han kan sidde at spille på. Anordningen er i sin 20 funktion af transportredskab udviklet specielt til kontrabasser, idet den har store luftpumpede hjul og en tyk polstret bæreflade, som tilsammen virker særdeles stødabsorberende og dermed beskyttende for kontrabassen under transport. Herved kan kontrabassisten transportere sin 25 kontrabas på en betryggende og komfortabel måde ved hjælp af anordningen i egenskab af transportredskab, samtidig med at han ikke behøver at bære en stol ved siden af, idet der i anordningen er integreret en høj stol.The invention provides a multifunctional transport and seating device with which the double bass can be transported and which, when the double bassist reaches the venue, can be transformed into a high chair he can sit on. The device, in its function of transporting gear, is specially developed for double basses, having large air-pumped wheels and a thick padded support surface, which together act as very shock absorbing and thus protective of the double bass during transport. Hereby the double bass player can transport his double bass in a safe and comfortable manner by means of the device as a transport tool, while not having to carry a chair next to it, as a high chair is integrated in the device.

30 Dette opnås ifølge opfindelsen ved en transport- og siddeanordning af den indledningsvis nævnte art og kendetegnet ved, at anordningen i egenskab af transportredskab af en hjuldels (25) to rør (28) som er dimensioneret og af en hjulaksel (26) forbundet således, at de øverste ender af rørene 35 (28) teleskopisk kan optage en stoldels (6) yderrør (12).This is achieved according to the invention by a transport and seating device of the type mentioned in the beginning and characterized in that the device as a transport tool of two pipes (28) of a wheel part (25) which is dimensioned and of a wheel axle (26) is connected so that that the upper ends of the tubes 35 (28) can telescopically receive an outer tube (12) of a steel part (6).

Herved kan stoldelen (6) sættes sammen med hjuldelen (25), hvorved anordningen i egenskab af transportredskab kan sættes sammen til et vognstel.Hereby the seat part (6) can be joined with the wheel part (25), whereby the device as a transport tool can be assembled into a carriage frame.

4 DK 174034 B14 DK 174034 B1

Ifølge opfindelsen har anordningen i egenskab af stol to under sædet (1) på en metalplade (4) monterede rørstykker (5) med en sådan indbyrdes placering, at de kan skydes ned i stoldelens (6) inderrør (8). Herved kan sædet sættes sammen med stoldelen, 5 hvorved anordningen kan sættes sammen til en stol. Hjuldelen (25) er ved anordningens samling og brug som stol ikke i brug.According to the invention, the device as chair two has pipe pieces (5) mounted beneath the seat (1) on a metal plate (4) in such a way that they can be pushed down into the inner tube (8) of the chair part (6). Hereby the seat can be joined with the chair part 5 whereby the device can be joined to a chair. The wheel part (25) is not in use during assembly and use as chair.

Ifølge opfindelsen har anordningen i egenskab af transportredskab et hul (38) i stoldelens (6) bagben (20) med 10 en sådan placering, at et i hullet (38) monteret gummihus beregnet til modtagelse og fiksering af en tap med hoved, når stoldelens (6) yderrør (12) er skudt ned i hjuldelens (25) rør (28) og bagbenet (20) vippes ind mod hjuldelens (25) hjulaksel (26) , vil gribe om og fikseres til en på hjulakslen (26) 15 monteret tap med et hoved (27). Herved kan stoldelen (6), når den er samlet med hjuldelen (25) fikseres hertil, så vognstellet forbliver samlet ved brug af anordningen i egenskab af transportredskab.According to the invention, the device as a transport tool has a hole (38) in the rear leg (20) of the carriage part (6) with a position such that a rubber housing mounted in the hole (38) is intended for receiving and fixing a pin with head when the carriage part (6) outer tube (12) is shot down into the tube (28) of the wheel part (25) and the rear leg (20) is tilted towards the wheel axle (26) of the wheel part (25), will engage and be fixed to one mounted on the wheel axle (26) 15 loss with a head (27). Hereby, the seat part (6), when assembled with the wheel part (25), can be fixed thereto so that the carriage frame remains assembled by use of the device as a transport tool.

20 Ifølge opfindelsen består anordningen i egenskab af transportredskab af en hjuldels (25) to af en hjulaksel (26) forbundne rør (28), hvori to i den nederste del af rørene (28) gennemgående huller (31) er dimensioneret og placeret således, at de kan optage og fastholde de under sædet (1) monterede to 25 rørstykker (5). Sædet (1) kan herved fastgøres til hjuldelen (25), hvorved anordningen i egenskab af transportredskab får en til vognstellet fastgjort bæreflade for kontrabassen bestående af et polstret sæde (1).According to the invention, the device as a transport tool consists of a wheel part (25) two pipes (28) connected to a wheel shaft (26), in which two holes (31) which pass through the lower part of the pipes (28) are dimensioned and positioned thus; that they can accommodate and retain the two 25 pipe pieces (5) mounted under the seat (1). The seat (1) can thereby be attached to the wheel part (25), whereby the device, as a transport tool, is provided with a supporting surface for the contrabass consisting of a padded seat (1).

30 Ifølge opfindelsen består anordningen i egenskab af transportredskab af en hjuldels (25) to rør (28), som er buet i en sådan vinkel fremad, at sædets overflade (1), når de under sædet (1) monterede to rørstykker (5) fastgøres til hullerne (31) i hjuldelens (25) to rør (28), har en hældning der svarer 35 til rundingen på en kontrabas, når denne fastgøres til anordningen.According to the invention, the device as a transport tool consists of two pipes (28) of a wheel part (25) which are curved at such an angle that the surface (1) of the seat when the two pipe pieces (5) are mounted under the seat (1) attached to the holes (31) in the two tubes (28) of the wheel part (25), has an inclination corresponding to 35 the rounding of a double bass when attached to the device.

5 DK 174034 B1 Sædet (1) vil, når kontrabassen spændes ind til anordningen i egenskab af transportredskab og vippes bagover indtil tyngdepunktet er over hjulaksen (26), herved optage kontrabassens vægt på et så stort areal af sædet som muligt 5 samtidig med at tyngdepåvirkningen fra kontrabassen vil være i det væsentligste vinkelret til sædets overflade. Rystelser og stød fra et ujævnt underlag (43) under brug af anordningen i egenskab af transportredskab vil herved forplante sig mindst muligt op mod kontrabassen. Yderligere har sædets tykke jo polstring samt de store hjul (30) forsynet med luftfyldte dæk en særdeles stødabsorberende effekt, hvorved anordningen i egenskab af transportredskab yder kontrabassen en optimal beskyttelse mod stød og rystelser under transport.5 DK 174034 B1 The seat (1), when the double bass is tensioned to the device as a transport tool and is tilted backwards until the center of gravity is above the wheel axle (26), thereby accepts the weight of the double bass as large an area of the seat as possible 5 while also affecting the weight from the double bass will be substantially perpendicular to the seat surface. Shaking and shocks from an uneven surface (43) using the device as a transport tool will thereby propagate as far as possible towards the double bass. Furthermore, the seat's thick padding as well as the large wheels (30) provided with air-filled tires have a very shock-absorbing effect, whereby the device as a transport tool provides the contrabass with optimal protection against shocks and shakes during transport.

15 Ifølge opfindelsen har anordningen i egenskab af transportredskab en på stoldelens (6) to yderrør (12) monteret plade (37) med en sådan placering og størrelse, at den vil danne støtteflade ind mod den nederste runding (42) på kontrabasser i forskellige størrelser. Herved opnås at 20 kontrabasser kan variere i alle størrelser indenfor normale grænser og altid modtage støtte ind mod kontrabassens nederste runding (42) fra den gummibeklædte plade (37) ved anvendelse af anordningen i egenskab af transportredskab.According to the invention, the device, as a transport tool, has a plate (37) mounted on the two outer tubes (6) of the chair part (6) of such a position and size that it will form a supporting surface against the bottom rounding (42) of double-size double basses . This provides that 20 double basses can vary in all sizes within normal limits and always receive support against the bottom round (42) of the double bass from the rubber-coated plate (37) using the device as a transport tool.

25 Ifølge opfindelsen har anordningen i egenskab af transportredskab en på stoldelens (6) to inderrør (8) monteret plade (35), som ved indstilling af inderrørenes (8) højde kan tilpasses højden af og danne støtteflade ind mod den øverste runding (41) på kontrabasser i forskellige størrelser. Herved 30 kan anordningen støtte kontrabassen ind mod både den nederste (42) og øverste (41) runding uanset kontrabassens størrelse. Dette har stor betydning, da anordningen i egenskab af transportredskab herved sikrer at kontrabassen altid støttes ind mod to af dens stærke områder, som er de samme områder, 35 kontrabassen lægges ned på, når den lægges på gulvet.According to the invention, the device, as a transport tool, has a plate (35) mounted on the chair part (6) of the inner tube (8), which, by adjusting the height of the inner tubes (8), can adjust the height and form a supporting surface towards the upper rounding (41). on double basses of different sizes. Hereby, the device can support the double bass against both the bottom (42) and upper (41) rounds regardless of the size of the double bass. This is of great importance as the device as a transport tool thereby ensures that the double bass is always supported against two of its strong areas, which are the same areas that the double bass is laid down when it is laid on the floor.

Konventionelle transportvogne som f.eks. sækkevogne har til forskel fra anordningen ikke denne indstillings- og beskyttelsesmulighed.Conventional transport vehicles such as baggage trucks, unlike the device, do not have this adjustment and protection option.

6 DK 174034 B16 DK 174034 B1

De gummibeklædte støtteflader (35 og 37) giver yderligere også mulighed for, at anordningen i egenskab af transportredskab og med kontrabassen spændt ind til kan vippes bagover og lægges ned på underlaget (45). Anordningen vil da hvile mod underlaget 5 (45) på de to hjul (30) og håndtaget (7) med kontrabassen hvilende med rundingerne (41 og 42) ned mod anordningens støtteflader (35 og 37).The rubber-coated support surfaces (35 and 37) also further allow the device, as a transport tool and with the double bass, to be tilted backwards, to be tilted backwards and laid down on the support (45). The device will then rest on the support 5 (45) of the two wheels (30) and the handle (7) with the contrabass resting with the rounds (41 and 42) down against the support surfaces (35 and 37) of the device.

Ifølge opfindelsen har anordningen i egenskab af stol mere end 10 et hul (15) i stoldelens (6) bagben (20), som den på bagbenet (20) i længderetningen glidende muffes (13) påmonterede positioneringsbolt (14) kan fikseres i. Dette betyder at muffen (13) kan fikseres i forskellige huller (15), hvorved bagbenets (20) grad af udfoldelse fra resten af stoldelen (6) kan 15 varieres og dermed ændre vinklen af yderrørenes (12) vinkel i forhold til underlaget (48), når stoldelens tre ben hviler på underlaget. På denne måde kan hermed også vinklen af sædets (1) overflade i forhold til underlaget (48) indstilles i forskellige grader, når anordningen er samlet som stol.According to the invention, the device as chair has more than 10 a hole (15) in the rear leg (20) of the chair part (6), in which the longitudinal sliding sleeve (13) mounted on the rear leg (20) can be fixed. means that the sleeve (13) can be fixed in different holes (15), whereby the degree of unfolding of the rear leg (20) from the rest of the chair part (6) can be varied, thus changing the angle of the angle of the outer tubes (12) with respect to the base (48). , when the three legs of the chair part rest on the ground. In this way, the angle of the surface of the seat (1) relative to the support (48) can thus also be adjusted to different degrees when the device is assembled as a chair.

2020

Da kontrabassister har kontrabassen i en skrå vinkel ind mod maven, når de sidder og spiller, hvilket giver et ikke ubetydeligt pres ind mod maven, er det naturligt at hælde en anelse fremad ind mod kontrabassen for at danne en form for 25 modvægt til denne, så man ikke krummer og falder sammen i ryggen. For de fleste kontrabassister vil anordningens mulighed for at justere sædets vinkel i en svag hældning fremover derfor være af afgørende betydning, da de herved får understøttelse fra sædet til den svagt fremadlænede position, idet sædets 30 overflade vil være vinkelret til rygsøjlens længderetning.Since double bassists have the double bass at an oblique angle to the abdomen as they sit and play, which gives a not insignificant pressure against the stomach, it is natural to lean slightly forward toward the double bass to form a counterweight to it, so that one does not crouch and collapse in the back. Therefore, for most contrabassists, the ability of the device to adjust the seat angle at a slight inclination in the future will be of crucial importance as they thereby receive support from the seat to the weakly forward position, the surface of the seat 30 being perpendicular to the longitudinal direction of the spine.

Ifølge opfindelsen har anordningen i egenskab af stol en fræset kant (34) med en sådan placering på stoldelens (6) håndtag (7), at den fikserer en under sædet (1) monteret snaplås (47), når 35 sædets (1) to rørstykker (5) skydes ned i stoldelens (6) inderrør (8). Herved undgåes at stoldelen (6) falder utilsigtet af, når man løfter den samlede stol (fig. 6) i sædets kant, hvilket er en naturlig måde at løfte stolen på. Hvis stoldelen DK 174034 B1 7 (6) faldt af, kunne det få katastrofale følger, idet den kunne falde ned på og ødelægge et instrument f.eks. en cello eller en anden kontrabas, som typisk lægges ned på gulvet, når et orkester holder pause. For at undgå denne situation skal 5 snaplåsen (47) under sædet (1) derfor udløses, før sædet kan adskilles fra stoldelen (6).According to the invention, the device as chair has a milled edge (34) with such a position on the handle (7) of the chair part (6) that it fixes a snap lock (47) mounted under the seat (1) when the two seat (1) Pipe pieces (5) are pushed down into the inner tube (8) of the chair part (6). This prevents the chair part (6) from accidentally falling off when lifting the entire chair (Fig. 6) at the edge of the seat, which is a natural way to lift the chair. If the chair part DK 174034 B1 7 (6) fell off, it could have catastrophic consequences as it could fall on and destroy an instrument e.g. a cello or other double bass, which is typically laid down on the floor when an orchestra pauses. Therefore, to avoid this situation, the snap lock (47) under the seat (1) must be released before the seat can be separated from the seat part (6).

Ifølge opfindelsen omdannes anordningen fra transportredskab til stol, ved at to elastikker (33 og 40) om henholdsvis 10 kontrabassens pind (46) og hals (39) som et første trin skal frigøres fra kontrabassen. Kontrabassen stilles til siden eller lægges på gulvet, hvorefter som et andet trin, bagbenet (20) på stoldelen (6) løsnes fra hjuldelens (25) hjulaksel (26) og som et tredie trin stoldelens (6) yderrør (12) løftes op og ud af 15 hjuldelens (25) rør (28). Herved adskilles stoldelen (6) fra hjuldelen (25). Som et fjerde trin fikseres muffen (13) i et af hullerne (15) i bagbenet (20), hvorved stoldelens (6) grad af udfoldelse indstilles. Stoldelen (6) indstilles herved på en måde, så sædets (1) overflade, når sædet bagefter sættes sammen 20 med stoldelen (6), vil være vandret eller have en ønsket hældning fremover. Som et femte trin føres sædets (1) to rørstykker (5) sammen med sædet op af hullerne (31) i hjuldelens (25) rør (28) og som et sjette trin skydes sædets (1) rørstykker (5) ned i stoldelens (25) inderrør (8). På denne 25 måde skifter sædet (1) position fra at være fastgjort til hjuldelen (25) til at være fastgjort til stoldelen (6), og hermed også funktion fra at bære en kontrabas til at bære en person. Når sædets to rørstykker (5) skydes ned i stoldelens inderrør (8) og metalpladen (4) under sædet rammer mod toppen 30 af stoldelens inderrør, vil den i metalpladen monterede snaplås (47) gribe fast i rillen (34) i stoldelens håndtag (7), og derved fiksere sædet (1) til stoldelen (6) indtil snaplåsen udløses. Som et syvende trin udløses låsemekanismen (11, 16 og 17) i stoldelens (6) øverste vandrette rør (19) samtidig med at 35 sædet (1) løftes til den ønskede højde. Låsemekanismen fungerer ved at klemme to gribetapper (11) sammen med den ene hånd, hvorved to låsetapper (16) inde i det øverste vandrette rør (19) på stoldelen (6) trækkes ud af hullerne (9) i inderrørene 8 DK 174034 B1 (8) og dermed frigør inderrørene (8) i længderetningen. Når gribetapperne (11) slippes igen, vil låsetapperne (16) af en fjeder (17) midt i det øverste vandrette rør (19) presses udad mod inderrørene (8) og ind i et af hullerne (9) heri, hvorved 5 inderrørenes grad af udtrækning fra yderrørene (12) og dermed stolens højde fikseres. Ved anordningens samling og brug som stol er hjuldelen (25) ikke i brug.According to the invention, the device is transformed from transport tool to chair by releasing two elastic bands (33 and 40) about the double bass (46) and neck (39), respectively, as a first step from the double bass. The double bass is set aside or laid on the floor, after which, as a second step, the rear leg (20) of the seat part (6) is released from the wheel axle (26) of the wheel part (25) and as a third step the outer tube (12) of the seat part (6) is lifted and out of the 15 wheel (25) tube (28). This separates the seat part (6) from the wheel part (25). As a fourth step, the sleeve (13) is fixed in one of the holes (15) in the rear leg (20), thereby adjusting the degree of unfolding of the seat part (6). The seat part (6) is hereby adjusted in such a way that when the seat (1) is subsequently assembled 20 with the seat part (6), the surface of the seat (1) will be horizontal or have a desired inclination going forward. As a fifth step, the two pipe pieces (5) of the seat (1) are moved together with the seat of the holes (31) in the pipe (28) of the wheel part (25) and as a sixth step the pipe pieces (5) of the seat (1) are pushed down into the seat part ( 25) inner tube (8). In this way, the seat (1) changes position from being attached to the wheel part (25) to being attached to the seat part (6), and thus also functions from carrying a double bass to carrying a person. As the two tube pieces (5) of the seat are pushed down into the inner tube (8) of the chair part and the metal plate (4) under the seat hits against the top 30 of the inner tube of the chair part, the snap lock (47) mounted in the metal plate will engage the groove (34) in the handle of the chair part ( 7), thereby fixing the seat (1) to the seat part (6) until the snap lock is released. As a seventh step, the locking mechanism (11, 16 and 17) is released in the upper horizontal tube (19) of the chair part (6) while raising the seat (1) to the desired height. The locking mechanism works by squeezing two gripping pins (11) together with one hand, whereby two locking pins (16) inside the upper horizontal pipe (19) of the chair part (6) are pulled out of the holes (9) in the inner tubes 8 DK 174034 B1 ( 8) and thereby release the inner tubes (8) in the longitudinal direction. When the gripping pins (11) are released again, the locking pins (16) of a spring (17) in the middle of the upper horizontal tube (19) are pressed outwardly against the inner tubes (8) and into one of the holes (9) therein, whereby the degree of the inner tubes (5) of extension from the outer tubes (12) and thus the height of the chair is fixed. The wheel part (25) is not in use during assembly and use as chair.

Ifølge opfindelsen omdannes anordningen fra stol til 10 transportredskab ved, at den under sædet (1) monterede snaplås (47), som et første trin skal udløses, som et andet trin sædets (1) to rørstykker (5) sammen med sædet løftes op og ud af stoldelens (6) inderrør (8), og som et tredie trin sædets (1) rørstykker (5) føres ned i hullerne (31) i hjuldelens (25) to 15 rør (28). Sædet (1) skifter herved position fra at være fastgjort til stoldelen (6) til at være fastgjort til hjuldelen (25) og dermed også funktion fra at bære en person til at bære en kontrabas. Som et fjerde trin skydes stoldelens (6) yderrør (12) ned i hjuldelens (25) rør (28), hvorved stoldelen (6) 20 bringes sammen med hjuldelen (25). Som et femte trin trækkes positioneringsbolten (14) på bagbenets (20) muffe (13) ud, som et sjette trin glides muffen (13) op ad bagbenet (20) uden at blive fikseret i noget hul (15) i bagbenet (20). Som et syvende trin vippes bagbenet (20) ind mod og fikseres til den på 25 hjulakslen (26) siddende låseanordning (27), hvorved stoldelen (6) dels foldes sammen, dels fikseres til hjuldelen (25). Bagbenet (20) skifter herved funktion fra at være tredie ben på stolestellet til at være fikserende led mellem stoldelen (6) og hjuldelen (25). Som et ottende trin udløses låsemekanismen (11, 30 16 og 17) i stoldelens (6) øverste vandrette rør (19) samtidig med at stoldelens (6) inderrør (8) løftes til en af kontrabassens størrelse given passende højde. Låsemekanismen udløses på samme måde som ved indstilling af stolens højde ved anordningens omdannelse fra transportredskab til stol. Ved 35 omdannelsen fra stol til transportredskab skal højden af inderrørene (8) derimod indstilles med det formål at sørge for, at den øverste støtteplade (35) vil være ud for den øverste runding (41) på kontrabassen, når denne herefter som et niende 9 DK 174034 B1 trin af to elastikker (33 og 40) omkring henholdsvis kontrabassens pind (46) og hals (39) spændes med siden til ind mod anordningen i egenskab af transportredskab.According to the invention, the device is transformed from chair to transport tool by lifting the snap lock (47) mounted under the seat (1) as a first step, as a second step the two pipe pieces (5) of the seat (1) are lifted together with the seat and out of the inner tube (8) of the seat part (6), and as a third step the pipe pieces (5) of the seat (1) are inserted into the holes (31) in the two tubes (28) of the wheel part (25). The seat (1) hereby changes position from being attached to the seat part (6) to being attached to the wheel part (25) and thus also function from carrying a person to carrying a double bass. As a fourth step, the outer tube (12) of the chair part (6) is pushed down into the tube (28) of the wheel part (25), whereby the chair part (6) 20 is brought together with the wheel part (25). As a fifth step, the positioning bolt (14) on the sleeve (13) of the hind leg (20) is pulled out, as a sixth step the sleeve (13) is slid up the hind leg (20) without being fixed in any hole (15) in the hind leg (20). . As a seventh step, the rear leg (20) is tilted towards and fixed to the locking device (27) seated on the wheel shaft (26), whereby the seat part (6) is partly folded and partly fixed to the wheel part (25). The rear leg (20) hereby switches function from being third leg of the chair frame to being a fixed link between the chair part (6) and the wheel part (25). As an eighth step, the locking mechanism (11, 30 16 and 17) is released in the upper horizontal tube (19) of the chair part (6) while raising the inner tube (8) of the chair part (6) to a suitable height given by the double bass. The locking mechanism is triggered in the same way as when adjusting the height of the chair when the device is converted from transport tool to chair. On the other hand, when converting from chair to transport tool, the height of the inner tubes (8) must be adjusted in order to ensure that the upper support plate (35) will be facing the upper rounding (41) of the double bass when it is then 9 B1 steps of two elastics (33 and 40) around the double bass (46) and neck (39), respectively, are tightened laterally towards the device as a transport tool.

5 Når kontrabassen hermed er fastgjort til anordningen i egenskab af transportredskab kan den vippes bagover, indtil tyngdepunktet er lige bag hjulakslen (26), hvorefter man kan rulle kontrabassen fremad på underlaget (43).5 When the double bass is attached to the device as a transport tool, it can be tilted backwards until the center of gravity is just behind the wheel shaft (26), after which the double bass can be moved forward on the support (43).

10 Kontrabassen kan også stå af sig selv i oprejst position spændt ind mod anordningen i egenskab af transportredskab, idet tyngdepunktet vil være mellem kontrabassens pind (46) og de to hjul (30), som vil være støttepunkterne mod underlaget (44). Dette har stor betydning ved transport af kontrabassen, da man 15 på den måde i f.eks. busser og tog kan fastgøre kontrabassen i oprejst position til et håndtag eller lignende, hvorved den optager minimal plads i forhold til, hvis man var nødt til at lægge den ned.The double bass can also stand by itself in an upright position clamped against the device as a transport tool, the center of gravity being between the double bass (46) and the two wheels (30) which will be the supporting points against the support (44). This is of great importance when transporting the double bass, since in this way, e.g. buses and trains can attach the double bass in an upright position to a handle or the like, thereby taking up minimal space compared to if one had to put it down.

20 Yderligere kan kontrabassen, når den er spændt ind til anordningen i egenskab af transportredskab vippes helt bagover og lægges ned med anordningens to hjul (30) og håndtaget (7) som støttepunkter mod underlaget (45).20 Furthermore, the contrabass, when clamped to the device as a transport tool, can be tilted fully backwards and folded down with the two wheels (30) of the device and the handle (7) as support points against the support (45).

DK 174034 B1DK 174034 B1

Opfindelsen forklares nærmere i det følgende under henvisning til figurerne, hvor io fig. 1 viser sædet ifølge opfindelsen, 5 fig. 2 viser stoldelen ifølge opfindelsen, fig. 3 viser hjuldelen ifølge opfindelsen, 10 fig. 4 viser anordningen samlet som transportredskab ifølge opfindelsen, fig. 5 viser anordningen samlet som transportredskab med en kontrabas spændt ind til ifølge opfindelsen, og 15 fig. 6 viser anordningen samlet som stol ifølge opfindelsen.The invention is explained in more detail below with reference to the figures, in which FIG. 1 shows the seat according to the invention; 2 shows the chair part according to the invention; FIG. 3 shows the wheel part according to the invention; FIG. 4 shows the device assembled as a transport tool according to the invention; FIG. 5 shows the device assembled as a transport tool with a double bass fastened in accordance with the invention, and FIG. 6 shows the device assembled as a chair according to the invention.

Figur 1 viser sædet (1), som består af et omtrentligt ovalt på en træplade (3) betrukket og polstret sæde, som på undersiden 20 har fastskruet en metalplade (4), med to påsvejsede rørstykker (5), der hælder i en sådan vinkel fremad, at sædet vil være i en vandret position i forhold til underlaget (48), når det er samlet med stoldelen {6), og denne er i den mest udfoldede position. I et bukket stykke (2) midt på metalpladen (4) er et 25 firkantet hul (2), hvori en snaplås (47) kan monteres.Figure 1 shows the seat (1), which consists of an approximately oval on a wooden board (3) upholstered and padded seat which, on the underside 20, screws a metal plate (4), with two welded pipe pieces (5), which incline into such a angled forward, the seat will be in a horizontal position relative to the support (48) when assembled with the seat part {6) and this is in the most unfolded position. In a bent piece (2) in the middle of the metal plate (4) is a square hole (2) into which a snap lock (47) can be mounted.

Figur 2 viser stoldelen (6), som er et trebenet stolestel med to lodret orienterede parallelle rør, benævnt yderrørene (12). Disse forbindes af to mellemliggende vandrette rør (19 og 24), 30 hvor der om det øverste vandrette rør (19) sidder et drejeligt rørstykke (18), hvor der er påsvejset et lodret orienteret vippeligt rør, benævnt bagbenet (20).Figure 2 shows the chair part (6), which is a three-legged chair frame with two vertically oriented parallel tubes, referred to as the outer tubes (12). These are joined by two intermediate horizontal pipes (19 and 24), 30 having a swivel pipe piece (18) on the upper horizontal pipe (19), where a vertically oriented tiltable pipe, called the rear leg (20), is welded.

Inde i yderrørene (12) kan to rør, benævnt inderrørene (8), som 35 er indbyrdes forbundet i den øverste ende af en svagt buet tværgående stang (7), der fungerer som håndtag for anordningen . i egenskab af transportredskab, glide teleskopisk op og ned. I håndtaget (7) er der en rille (34), hvis kant tjener somInside the outer tubes (12) are two tubes, called the inner tubes (8), which are interconnected at the upper end of a slightly curved transverse rod (7) which acts as a handle for the device. as a transport tool, slide telescopically up and down. In the handle (7) there is a groove (34) whose edge serves as

IIII

DK 174034 B1 gribeflade for den under sædet (1) monterede snaplås (47). Mellem inderrørene (8) er der ud for håndtaget (7) monteret en plade (35), der tjener som støtteflade ind mod kontrabassens øverste runding (41), når anordningen er samlet som 5 transportredskab.DK 174034 B1 gripping surface for the snap lock (47) mounted under the seat (1). Between the inner tubes (8), a plate (35) is mounted next to the handle (7) which serves as a support surface towards the upper rounding of the double bass (41) when the device is assembled as a transport tool.

Inde i det øverste vandrette rør (19) mellem yderrørene (12) glider to tapper, benævnt højdelåstapper (16), som af en fjeder (17) i midten presses væk fra hinanden, ud gennem et hul i den 10 ene væg i yderrørene (12) og ind mod inderrørene (8). Enden af højdelåstapperne (16) har en diameter, så de kan være i inderrferenes huller (9). To mindre tapper, benævnt gribetapper (11), der er skruet ind i højdelåstapperne (16), og hver går igennem et aflangt hul (10) i det øverste vandrette rør (19), 15 der tillader højdelåstapperne (16) en tilstrækkelig vandring, kan klemmes sammen mod hinanden med fingrene, hvorved højdelåstappernes (16) ender trækkes ud af hullerne (9) i inderrørene (8). Når gribetapperne (11) klemmes sammen, kan inderrørene (8) herved løftes til en ønsket højde, som herefter 20 fikseres ved at slippe gribetapperne (11), så højdelåstapperne (16) af fjederens (17) kraft presses udad og ind i inderrørenes huller (9).Inside the upper horizontal tube (19) between the outer tubes (12), two pins, called height locking pins (16), which are pressed away from each other by a spring (17) in the middle, extend through a hole in the one wall of the outer tubes ( 12) and towards the inner tubes (8). The end of the height locking tabs (16) has a diameter so that they can be in the holes (9) of the inner rings. Two smaller pins, termed gripping pins (11), screwed into the height locking pins (16), each passing through an elongated hole (10) in the upper horizontal tube (19), 15 allowing the height locking pins (16) to adequately travel, can be clamped together against one another with the fingers, thereby pulling the ends of the height locking pins (16) out of the holes (9) in the inner tubes (8). As the gripping pins (11) are squeezed, the inner tubes (8) can thereby be lifted to a desired height, which is then fixed by releasing the gripping pins (11) so that the height locking pins (16) of the spring (17) force are pressed outwards and into the holes of the inner tubes. (9).

Bagbenets (20) grad af udfoldelse i forhold til yderrørene (12) 25 fikseres af et på bagbenet i længderetningen glidende rørstykke, benævnt muffen (13), som af en på muffen monteret positioneringsbolt (14) fikseres i et af hullerne (15) i bagbenet (20). Muffen (13) har to på et drejeligt hængsel (36) påsvejsede stænger (22), der i den anden ende er påsvejset to 30 om det nederste vandrette rør mellem yderrørene drejelige rørstykker (23), hvorved muffen (13) og dermed bagbenets (20) nederste del er forbundet til den øvrige stoldel (6). Bagbenet (20) kan således fikseres i forskellige vinkler ud fra stoldelen (6) afhængig af, hvilket hul (15) muffens (13) 35 positioneringsbolt (14) fikseres i, hvorved vinklen af stoldelens yderrør (12), inderrør (8) og dermed sædet (1) i forhold til underlaget (48) kan indstilles i et antal 12 DK 174034 B1 forskellige grader svarende til antallet af huller (15) i bagbenet (20).The degree of unfolding of the rear leg (20) relative to the outer tubes (12) 25 is fixed by a longitudinally extending tube piece, referred to as the sleeve (13), which is fixed by a positioning bolt (14) mounted on one of the holes (15) in the hind leg (20). The sleeve (13) has two rods (22) welded to a swivel hinge (36) which is welded at the other end two 30 about the lower horizontal tube between the outer tubes rotatable tubes (23), whereby the sleeve (13) and thus the rear leg ( 20) the lower part is connected to the other chair part (6). The rear leg (20) can thus be fixed at different angles from the seat part (6) depending on which hole (15) the positioning bolt (14) of the sleeve (13) is fixed, whereby the angle of the seat part outer tube (12), inner tube (8) and thus, the seat (1) relative to the base (48) can be adjusted to a number of different degrees corresponding to the number of holes (15) in the rear leg (20).

Figur 3 viser hjuldelen (25), som består af to lodret 5 orienterede rør (28), der er forbundet af en massiv stang (26), som går tværs igennem de parallelt stillede rør (28) og tjener som hjulaksel. De to rør (28) har under hjulakslen (26) et buk fremad samt et gennemgående hul (31) nær enderne, som tjener til at modtage sædets (1) to rørstykker (5) og dermed fastgøre 10 sædet (1) til hjuldelen (25). Mellem hjuldelens (25) rør (28) er der ud for de borede huller (31) en tværgående stang (32), hvorpå'der er monteret en gummirem (33) med en krog i enden, som spændes om kontrabassens pind (46, figur 5), når anordningen er samlet som transportredskab. På ydersiden af 15 hjuldelens (25) rørs (28) øverste ende er der påsvejset to i enden udadbukkede plader (29), som styrer kontrabassen, når den spændes ind mod anordningen samlet som transportredskab.Figure 3 shows the wheel part (25), which consists of two vertically oriented pipes (28), which are connected by a solid rod (26) which passes through the parallel pipes (28) and serves as a wheel axle. The two pipes (28) have a forward bend under the wheel shaft (26) and a through hole (31) near the ends, which serves to receive the two pipe pieces (5) of the seat (1) and thus attach the seat (1) to the wheel part ( 25). Between the pipe (28) of the wheel part (25) there is a transverse rod (32) next to the drilled holes (31), on which is mounted a rubber strap (33) with a hook at the end, which is clamped about the double bass pin (46). Figure 5) when the device is assembled as a transport tool. On the outside of the upper end of the pipe (28) of the wheel (25), two end-bending plates (29) are welded to the end, which guide the double bass as it is clamped against the device as a transport tool.

Figur 4 viser opfindelsen samlet som transportredskab, hvor 20 stoldelens yderrør (12) er skudt teleskopisk ned i hjuldelens rør (28). De to dele er holdt sammen ved, at bagbenet (20) er vippet ind mod hjuldelens hjulaksel (26, figur 3), hvortil det er fikseret af en tap (27), der er presset ind i en i bagbenet (20) monteret gummimuffe (38). Sædets to tapper (5, figur 1) er 25 ført ned i hjuldelens huller (31), hvorved sædet (1) er fastgjort til hjuldelen (25).Figure 4 shows the invention assembled as a transport tool where the outer tube (12) of the chair part (12) is telescopically shot down into the tube part (28). The two parts are held together in that the rear leg (20) is tilted towards the wheel axle (26, Figure 3), to which it is fixed by a pin (27) pressed into a rubber sleeve (20) mounted in the rear leg (20). (38). The two tabs of the seat (5, Figure 1) are inserted into the holes (31) of the wheel part, whereby the seat (1) is attached to the wheel part (25).

Figur 5 viser opfindelsen samlet som transportredskab med en kontrabas spændt ind til. Kontrabassens nederste runding (42) 30 holdes ind mod anordningens nederste gummibeklædte støtteflade (37) af en gummirem med en krog (33), som er sat rundt om kontrabassens pind (46). Kontrabassens øverste runding (41) holdes ind mod anordningens øverste gummibeklædte støtteflade (35) af en almindelig bagageelastik (40), som er hægtet på den 35 ene side af håndtaget (7), rundt om kontrabassens hals (39) og ned til håndtagets anden side. Det ses også hvorledes anordningen i egenskab af transportredskab med kontrabassen spændt ind til under transport ruller på underlaget (43), i 13 DK 174034 B1 oprejst position står på underlaget (44) og i liggende position hviler på underlaget (45).Figure 5 shows the invention assembled as a transport tool with a double bass fastened to. The bottom round of the double bass (42) 30 is held against the lower rubber-coated support surface (37) of the device by a rubber strap with a hook (33) which is placed around the double bass stick (46). The upper base of the double bass (41) is held against the upper rubber-covered support surface (35) of the device by a common luggage elastic (40), which is secured on one side of the handle (7), around the neck of the double bass (39) and down to the other of the handle. page. It is also seen how the device, as a transport tool, with the double bass tensioned to during transport rolls on the substrate (43), stands in an upright position on the substrate (44) and in a supine position rests on the substrate (45).

Figur 6 viser opfindelsens samlet som stol stående på 5 underlaget (48). Sædet (1) er fastgjort til stoldelen (6), hvortil det fikseres af den under sædet monterede snaplås (47).Figure 6 shows the overall of the invention as a chair standing on the support (48). The seat (1) is attached to the seat part (6), to which it is fixed by the snap lock (47) mounted under the seat.

Claims

A multifunctional transport and seating device preferably for transporting and using contrabasses which, as a transport tool, are of the type consisting of two wheels on a wheel axle connected to a frame with a substantially horizontal support surface and a vertical support surface, to which the double bass rests and is tensioned side by side 10, which consists of a three-legged height-adjustable folding chair frame with a removable seat, characterized in that the device as a transport tool consists of a wheel part ( 25) two pipes (28) which are dimensioned and connected by a wheel shaft (26) 15 so that the upper ends of the pipes (28) can telescopically receive an outer tube (12) of a steel part (6).

Multifunctional transport and seating device according to claim 1, characterized in that the device as chair 20 has two pipe pieces (5) mounted beneath the seat (1) on a metal plate (4) in such a way that they can be slid down. in the inner tube (8) of the seat part (6).

Multifunctional transport and seating device according to claim 1, 25, characterized in that the device as a transport tool has a hole (38) in the rear leg (20) of the chair part (6) in such a position that a rubber housing mounted in the hole (38) intended for receiving and fixing a pin with head when the outer tube (12) of the chair part (6) is shot into the tube 30 (28) of the wheel part (25) and the rear leg (20) is tilted towards the wheel shaft (26) of the wheel part (25), will grip and fix to a pin (27) mounted on the wheel shaft (26).

Multifunctional transport and seating device according to claim 1, 35, characterized in that the device as a transport tool consists of a wheel part (25) two of a tube (26) connected to a wheel shaft (26), two of which in the lower part of the pipes ( 28) through holes (31) are dimensioned and positioned so that they can receive and hold two pipe pieces (5) mounted under the seat (1).

Multifunctional transport and seating device according to claims 3, 5, characterized in that the device as a transport tool consists of two wheels (28) of a wheel part (25) which are curved at such an angle that the seat surface (1), when the two pipe pieces (5) mounted under the seat (1) are attached to the holes (31) in the two pipes (28) of the wheel part (25), has an inclination 10 corresponding to the rounding of a double bass when attached to the device.

Multifunctional transport and seating device according to claim 1, characterized in that the device as a transport tool has a plate (37) mounted on the two outer tubes (12) of the chair part (6) of such a position and size that it will form a supporting surface towards the bottom round (42) on double basses of various sizes.

Multifunctional transport and seating device according to claim 1, characterized in that the device as a transport tool has a plate (35) mounted on the two inner tubes (8) of the chair part (6) of such size that when adjusting the inner tubes (8) ) height will form the support surface towards the top 25 rounding (41) of double-sized double basses.

Multifunctional transport and seating device according to claim 1, characterized in that the device as chair has more than one hole (15) in the rear leg (20) of the chair part (6), which the longitudinal sliding sleeve 30 on the rear leg (20) (13) mounted positioning bolt (14) can be fixed in.

Multifunctional transport and seating device according to claim 1, characterized in that the device as chair 35 has a milled edge (34) with such a position on the handle (7) of the chair part (6) that it fixes one under the seat (1). ) fitted snap lock (47) when the two pipe pieces (5) of the seat (1) are pushed down into the inner tube (8) of the seat part (6). DK 174034 B1

Method for changing multifunctional transport and seating device from transport tool to chair according to claims 1 to 9, characterized in that two elastics (33 and 40) about the double bass (46) and neck (39), respectively, as a first 5 steps must is released from the double bass as a second step of the rear leg (20) of the seat part (6) is released from the wheel shaft (26) of the wheel part (25), as a third step the outer tube (12) of the seat part (6) is lifted up and out of the pipe of the wheel part (25) (28), as a fourth stage, the sleeve (13) is fixed in one of the holes (15) in the rear leg (20), as a two-fifths of the seat (1) two tubes (5) together with the seat are led up by the holes (31). in the pipe (28) of the wheel part (25), as a sixth step, the pipe pieces (5) of the seat (1) are pushed down into the inner tube (8) of the seat part (25), and as a seventh step the locking mechanism (11, 16 and 17) in the seat part ( 6) the upper horizontal pipe (19) is released 15 while raising the seat (1) to the desired height.

Method of changing multifunctional transport and seating device from chair to transport tool according to claims 1 to 10, characterized in that the snap lock (47) mounted under the seat (1) is to be released as a first step as a second step of the seat. (1) two tubes (5) together with the seat are lifted up and out of the inner tubes (8) of the chair part (6), as a third stage tubes (5) of the seat (1) are inserted into the holes (31) in the two of the wheel part (25). a pipe (28) which is pushed down into the pipe (28) of the wheel part (25) as a fourth step the outer tube (12) of the wheel part (6), as a fifth step of the positioning bolt (14) on the sleeve (13) of the rear leg (20) is pulled out, as a sixth step the sleeve (13) is slid up the rear leg (20), which a seventh step the rear leg (20) is tilted towards and fixed to the locking device 30 (27) on the wheel shaft (26), as an eighth step locking mechanism (11) , 16 and 17) in the upper horizontal tube (19) of the chair part (6) is released while raising the inner tube (8) of the chair part (6) to one of the double bass of equal size given the appropriate height, and as a ninth step the double base of two elastic bands (33 and 40) about the counter base (46) and neck (39) of the counter-base are tensioned laterally towards the device.