SE410383B

SE410383B - VACUUM CLEANER

Info

Publication number: SE410383B
Application number: SE7802974A
Authority: SE
Inventors: K Thulin
Original assignee: Bsv Konsult Ab
Priority date: 1978-03-15
Filing date: 1978-03-15
Publication date: 1979-10-15
Also published as: SE7802974L

Description

780 2å97 le - 1 Det är också tidigare känt dammsugare, vilka endast är uppburna på golvet medelst två hjul, vilka är så stora att de väsentligen fullständigt täcker två sidor av dammsugarkroppen, vilken i denna typ av dammsugare är mera låd- eller trumlik. Emellertid har även hittills kända dammsugare av denna typ väsentligen samma nackdelar som de ovan nämnda, eftersom sugslangens infästning, dess utformning, samt tyngdpunktens placering icke är valda på :att saft. ' Oberoende av utformningen av tidigare kända dammsugare har dessa också endast med viss svårighet kunnat manövreras via sugslangen på trånga ut- rymmen såsom mellan möbler och liknande. Anledningarna härtill är också' de ovan nämnda, dvs den felaktiga utformningen av sugslangens infästning, placeringen av dammsugarkroppens tyngdpunkt osv. 780 2å97 le - 1 There are also previously known vacuum cleaners, which are only supported on the floor by means of two wheels, which are so large that they substantially completely cover two sides of the vacuum cleaner body, which in this type of vacuum cleaner is more like a box or drum. However, even hitherto known vacuum cleaners of this type have essentially the same disadvantages as those mentioned above, since the attachment of the suction hose, its design, and the location of the center of gravity are not chosen by: juice. Irrespective of the design of previously known vacuum cleaners, these have also only been able to be operated with some difficulty via the suction hose in narrow spaces such as between furniture and the like. The reasons for this are also the above-mentioned, ie the incorrect design of the suction hose attachment, the location of the center of gravity of the vacuum cleaner body, and so on.

Föreliggande uppfinning har till ändamål att åstadkomma en dammsugare av inledningsvis nämnt slag, vilken dammsugare lätt låter sig manövreras i trånga utrymmen via sin sugslang och vid vilken icke någon vältningsrisk behöver befaras.The object of the present invention is to provide a vacuum cleaner of the type mentioned in the introduction, which vacuum cleaner can easily be operated in tight spaces via its suction hose and in which no risk of tipping over is feared.

Dessa ändamål uppnås enligt uppfinningen om en dammsugare av inledningsvis nämnt slag kännetecknas därav att dammsugarkroppens ovansida är anordnad väsentligen i nivå med eller på obetydlig höjd över hjulens rotationsaxel och att dammsugarkroppen är anordnad med sin tyngdpunkt på avsevärt av- stånd under hjulens rotationsaxel samt för förbättring av dammsugarens ~manövrerbarhet är dammsugarens sugslang omkring en med hjulens rotations- axel parallell axel svängbart fäst på ovansidan av dammsugarkroppen.These objects are achieved according to the invention if a vacuum cleaner of the type mentioned in the introduction is characterized in that the upper side of the vacuum cleaner body is arranged substantially at or at an insignificant height above the axis of rotation of the wheels and that the vacuum cleaner body is arranged with its center of gravity. The maneuverability of the vacuum cleaner is the suction hose of the vacuum cleaner around a shaft pivotally parallel to the axis of rotation of the wheels on the upper side of the vacuum cleaner body.

Enligt en lämplig utföringsform för dammsugaren enligt uppfinningen har, sugslangen ett förhållandevis böjstyvt parti i anslutning till dammsugar- kroppen.According to a suitable embodiment of the vacuum cleaner according to the invention, the suction hose has a relatively flexurally rigid portion in connection with the vacuum cleaner body.

För att undvika att dammsugarkroppen kommer i svängning vid varierande belastning på motorn eller under start- och stoppfärloppen samt för att bidraga till dammsugarkroppens låga placering gäller lämpligen enligt uppfinningen att motor/sugfläktaggregatets rotationsaxel är vinkelrät mot hjulens rotationsaxel och är placerad på avsevärt avstånd under denna.In order to prevent the vacuum cleaner body from oscillating at varying loads on the motor or during the start and stop travel races and to contribute to the low position of the vacuum cleaner body, the rotating shaft of the motor / suction fan assembly is perpendicular to the rotating shaft of the wheels and is spaced considerably below.

Uppfinningen skall nu beskrivas närmare under hänvisning till bifogade ritning, på vilken Fig. 1 visar en dammsugare enligt uppfinningen sedd i 780297lr~1 dess hjulåxels riktning. Fig. 2 visar uppfinningsföremålet sett i en rikt- ning väsentligen vinkelrät mot betraktningsriktningen enligt Fig. 1.The invention will now be described in more detail with reference to the accompanying drawing, in which Fig. 1 shows a vacuum cleaner according to the invention seen in the direction of its wheel axle. Fig. 2 shows the object of the invention seen in a direction substantially perpendicular to the viewing direction according to Fig. 1.

Såsom framgår av ritningen omfattar dammsugaren enligt uppfinningen en dammsugarkropp 1, vilken uppbäres av två hjul 2. Detaljutformningen av dammsugarkroppen är icke av någon speciell vikt så länge som dess ovan- sida 3 befinner sig på endast obetydligt avstånd över hjulens 2 rotations- axel och den icke skjuter utanför den cylinder, som genereras av hjulens ytterperiferier. På dammsugarkroppens 1 ovansida 3 är dammsugarens sugslang 5 fäst medelst en ledanordning 4. Ledanordningen 4 är utformad för att tillåta svängning av sugslangen 5 omkring en axel, som är belägen nära hjulaxeln c-c och som är parallell med denna. Sugslangens 5 svängbarhet illustreras i Fig. 1 av pilen a. För att medge att dammsugaren enkelt styras via sugslangen 5 är dennas närmast dammsugaren belägna parti 6 ut- format på ett sådant sätt att det har en relativt stor böjstyvhet. Detta kan såsom antydes i figurerna åstadkommas genom att sugslangen har en delvis i slangens längdriktning förlöpande armering.As can be seen from the drawing, the vacuum cleaner according to the invention comprises a vacuum cleaner body 1, which is supported by two wheels 2. The detailed design of the vacuum cleaner body is of no special importance as long as its upper side 3 is at only insignificant distance over the axis of rotation of the wheels 2 and the does not project beyond the cylinder generated by the outer peripheries of the wheels. On the upper side 3 of the vacuum cleaner body 1, the suction hose 5 of the vacuum cleaner is fixed by means of a hinge device 4. The hinge device 4 is designed to allow pivoting of the suction hose 5 about an axis which is located near the wheel shaft c-c and which is parallel thereto. The pivotability of the suction hose 5 is illustrated in Fig. 1 by the arrow a. In order to allow the vacuum cleaner to be easily controlled via the suction hose 5, its portion 6 located closest to the vacuum cleaner is designed in such a way that it has a relatively large bending stiffness. This can be achieved as indicated in the figures by the suction hose having a reinforcement extending partly in the longitudinal direction of the hose.

Såsom nämnts ovan är det viktigt att dammsugarens tyngdpunkt är placerad på rätt ställe. Enligt uppfinningen skall tyngdpunkten vara placerad så lågt som över huvud taget är möjligt, vilket i ett praktiskt fall torde bli i området för linjen b-b i Fig. 1. Den nämnda linjen indikerar också ett lämpligt läge och en lämplig inriktning fär rotationsaxeln för damm- sugarens motor/sugfläktaggregat, varvid speciellt rotationsaxelns orien- tering vinkelrätt mot hjulaxeln c-c är fördelaktigt under accelerations- eller retardationsfärlopp hos den roterande delen i aggregatet. Vidare är det på väsentligen konventionellt sätt invändigt i dammsugarkroppen anord- nat en filteranordning för avskiljande av damm från den luftström, som sugs in via sugslangen och som från dammsugarkroppen utblåses i riktning snett uppåt via ett galler 7.As mentioned above, it is important that the center of gravity of the vacuum cleaner is placed in the right place. According to the invention, the center of gravity should be placed as low as possible at all, which in a practical case should be in the area of the line bb in Fig. 1. The said line also indicates a suitable position and a suitable direction for the axis of rotation of the vacuum cleaner. motor / suction fan unit, the orientation of the axis of rotation in particular perpendicular to the wheel axle cc being advantageous during acceleration or deceleration processes of the rotating part of the unit. Furthermore, in a substantially conventional manner, a filter device is arranged inside the vacuum cleaner body for separating dust from the air stream which is sucked in via the suction hose and which is blown out of the vacuum cleaner body in the direction obliquely upwards via a grille 7.

En på konventionella dammsugare många gånger problematisk detalj är dess nätangiutningssladd, eftersom denna har en tendens att trassla in sig i dammsugaren eller dess små hjul. Enligt uppfinningen är sladden 8 inget problem och kan därför ledas ut från dammsugarkroppen på i stort sett godtyckligt ställe. För enkelhetens skull föredrages emellertid dammsugar- kroppens undersida, vilket innebär att, eftersom dammsugaren är avsedd att manövreras medelst sugslangen 5 och dragas fram i denna, sladden 8 aldrig kommer att befinna sig i arbetsområdet för det munstycke, som ärA detail that is often problematic on conventional vacuum cleaners is its power supply cord, as this has a tendency to become entangled in the vacuum cleaner or its small wheels. According to the invention, the cord 8 is not a problem and can therefore be led out of the vacuum cleaner body in a substantially arbitrary place. For the sake of simplicity, however, the underside of the vacuum cleaner body is preferred, which means that since the vacuum cleaner is intended to be operated by the suction hose 5 and is pulled out therein, the cord 8 will never be in the working area of the nozzle which is

Claims

780297lr-1 placed on the end of the suction hose. Furthermore, the placement of the cord 8 on the underside of the vacuum cleaner also does not involve any risk that the cord may become entangled or get stuck, which is to be attributed to the large (40-50 am) diameter which the vacuum cleaner wheel 2 suitably has. As can be seen from Fig. 1, the wheels 2 of the vacuum cleaner are suitably formed with a few spokes 9, which means that the wheel can function in a convenient way as a carrying handle for the vacuum cleaner due to the large openings located between the spokes. It also appears from the drawing that the vacuum cleaner body 1 can suitably be provided with protective strips 10 of rubber, in the event that the vacuum cleaner should happen to hit some delicate object such as furniture legs or the like. Due to the design according to the invention of the vacuum cleaner with large wheels, the extremely low center of gravity of the vacuum cleaner body, the pivotable attachment of the suction hose 5 and its relatively relatively rigid portion located closest to the vacuum cleaner body, considerable advantages are achieved. Thus, the large wheel diameter means that the vacuum cleaner can very easily force thresholds and edges on even very thick carpets, which is not the case with many conventional vacuum cleaners. Furthermore, the combination of the pivotal attachment of the suction hose 5, the low center of gravity and the relatively flexurally rigid portion 6 of the suction hose means that the vacuum cleaner can be operated with very good compliance by means of the suction hose 5. There is hardly any risk of the vacuum cleaner overturning, not even in a situation is substantially horizontal and it is drawn in a horizontal plane substantially parallel to the wheel axle cc. In a situation like this, a conventional vacuum cleaner would most likely tip over, while the vacuum cleaner according to the invention instead "turns on a five-ring" because in this situation the two wheels of the vacuum cleaner will rotate in opposite directions due to the lever action of the relatively rigid portion 6. There is also no greater risk in such a situation that the cord 8 could impede the movements of one or both of the two wheels of the vacuum cleaner, since these have a considerable diameter.

A vacuum cleaner comprising a motor / suction fan assembly housed in a vacuum cleaner body (1), which is supported by wheels (2) covering two sides of the vacuum cleaner body, characterized in that the upper side of the vacuum cleaner body (1) 78029714-1 (3) arranged substantially at or at an insignificant height above the axis of rotation (cc) of the wheels (2) and that the vacuum cleaner body is arranged with its center of gravity at a considerable distance below the axis of rotation of the wheels, and that the suction hose (5) of the vacuum cleaner around the axis of rotation of the wheels (2) (cc) parallel shaft pivotally attached to the top (3) of the vacuum cleaner body (1).

Vacuum cleaner according to claim 1, characterized in that the suction hose closest to the vacuum cleaner body has a relatively flexurally rigid portion (6).

Vacuum cleaner according to claim 1 or 2, characterized in that the axis of rotation (b-b) of the motor / suction fan assembly is angularly red - against the axis of rotation (c-c) of the wheels and placed at a considerable distance below it. PUBLICATIONS MADE: France 954 126, 1 310 618