SE510687C2 - Wheels, especially for a garden vehicle and the use of such a wheel - Google Patents

Wheels, especially for a garden vehicle and the use of such a wheel

Info

Publication number
SE510687C2
SE510687C2 SE9703890A SE9703890A SE510687C2 SE 510687 C2 SE510687 C2 SE 510687C2 SE 9703890 A SE9703890 A SE 9703890A SE 9703890 A SE9703890 A SE 9703890A SE 510687 C2 SE510687 C2 SE 510687C2
Authority
SE
Sweden
Prior art keywords
wheel
hub
tread
elastic coupling
axis
Prior art date
Application number
SE9703890A
Other languages
Swedish (sv)
Other versions
SE9703890D0 (en
SE9703890L (en
Inventor
Kjell Arne Lundgren
Original Assignee
Kjell Lundgren
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kjell Lundgren filed Critical Kjell Lundgren
Priority to SE9703890A priority Critical patent/SE510687C2/en
Publication of SE9703890D0 publication Critical patent/SE9703890D0/en
Priority to PCT/SE1999/000220 priority patent/WO2000048848A1/en
Publication of SE9703890L publication Critical patent/SE9703890L/en
Publication of SE510687C2 publication Critical patent/SE510687C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/02—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims
    • B60B9/10—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims of rubber or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/02—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

A wheel for a vehicle that is intended to be driven over sensitive surfaces, such as lawns or ground surfaces that are to be sown with grass seed and/or rolled. The wheel includes a hub (4), a tread (2) generally coaxial with the hub, and an elastic coupling means (5, 6) between the hub (4) and the wheel tread (2). The tread (2) has the form of a circular-cylindrical rigid lattice construction. The elastic coupling device (5, 6) is adapted to permit an angular setting of at least 1:20 between the tread axis and the hub axis in a vertical plane in respect of a nominal vertical load transfer from the vehicle to the centre (Z) of the wheel. The invention also relates to the use of such a wheel.

Description

15 20 25 30 35 510 687 2 Uppfinningen tillhandahåller ett hjul som är särskilt väl läm- pat för att monteras på en fyrhjulig motorcykel eller dylikt, så att detta fordon tack vare de uppfinningsenliga hjulen nu kan löpa på mjuka och känsliga gräsmattor eller matjordsbelagda markytor utan risk för besvärande spàrbildning. The invention provides a wheel which is particularly well suited for mounting on a four-wheeled motorcycle or the like, so that thanks to the wheels according to the invention this vehicle can now run on soft and sensitive lawns or topsoil without risk of troublesome rutting.

Ett fyrhjuligt fordon av den antydda typen har, inklusive föra- re, en vikt av totalt ca 240 kg. Varje hjul kommer då att över- föra en last av ca 60 kg till underlaget. Gittertrummans bredd är av storleksordningen 40 cm och dess diameter är ungefär 80 cm. I ett ogynnsamt fall kan då hjulet utsättas för ett driv- moment i ett vertikalplan innehållande hjulaxeln av inemot 100 Nm. Enligt uppfinningen anvisas därvid att hjulets elastiska kopplingsorgan skall vara anordnade att för det nämnda vrid- momentet framkalla en vinkelställning av åtminstone 1:20 mellan löpbanans axel och navets axel.A four-wheeled vehicle of the type indicated, including the driver, weighs a total of about 240 kg. Each wheel will then transfer a load of about 60 kg to the ground. The width of the lattice drum is of the order of 40 cm and its diameter is approximately 80 cm. In an unfavorable case, the wheel can then be subjected to a driving torque in a vertical plane containing the wheel axle of up to 100 Nm. According to the invention, it is thereby provided that the elastic coupling means of the wheel shall be arranged to produce an angular position of at least 1:20 between the axis of the tread and the axis of the hub for the said torque.

Uppfinningen kommer i det följande att beskrivas i anslutning till ett schematiskt illustrerat exempel.The invention will be described in the following in connection with a schematically illustrated example.

Fig 1 visar en sidovy av ett hjul enligt uppfinningen.Fig. 1 shows a side view of a wheel according to the invention.

Fig 2 visar en axialsektion tagen utmed linje II-II i fig l.Fig. 2 shows an axial section taken along line II-II in Fig. 1.

Fig 3 visar schematiskt hjulet med en vinkelförställning mellan hjullöpbanans axel och hjulnavets axel.Fig. 3 schematically shows the wheel with an angular displacement between the axis of the wheel track and the axis of the wheel hub.

Fig 1 och 2 visar ett hjul innefattande en cirkulärcylindrisk gallerformig löpbana 2 vilken på insidan är försedd med vinkel- mässigt åtskilda allmänt axiella lastfördelningsbalkar 3. Vida- re innefattar hjulet ett nav 4 som är koaxiellt med löpbanan 2 och som bär elastiska kopplingselement 5. Ekrar 6 sträcker sig allmänt radiellt mellan kopplingselementen 5 och lastfördel- ningsbalkarna 3 för att bära navet 4 koaxiellt till löpbanan 2.Figures 1 and 2 show a wheel comprising a circular-cylindrical grid-shaped raceway 2 which on the inside is provided with angularly spaced generally axial load distribution beams 3. Furthermore, the wheel comprises a hub 4 which is coaxial with the raceway 2 and which carries elastic coupling elements 5. Spokes 6 extends generally radially between the coupling elements 5 and the load distribution beams 3 to support the hub 4 coaxially to the raceway 2.

De elastiska kopplingselementen 5 kan vara bildade av gummi- klotsar. 10 15 20 25 30 35 3 510 687 I fig 2 kan man se att navet 4 har formen av en i löpbanans 2 mittplan placerad ringfläns 41 med bultöppningar 42. En axel 7 på en fyrhjulig motorcykel av allhjulsdriven typ bär en anslut- ningssköld 71 med bultöppningar eller bultar 72 för koaxiell anslutning av skölden 71 till navflänsen 41.The elastic coupling elements 5 can be formed of rubber blocks. In Fig. 2 it can be seen that the hub 4 is in the form of an annular flange 41 placed in the center plane of the raceway 2 with bolt openings 42. A shaft 7 of a four-wheel motorcycle of all-wheel drive type carries a connection shield 71 with bolt openings or bolts 72 for coaxial connection of the shield 71 to the hub flange 41.

En fjärdedel av det aktuella fordonets totala vikt inklusive förare kan anses belasta hjulet.A quarter of the total weight of the vehicle in question, including the driver, can be considered to be loaded on the wheel.

En reaktionskraft från underlaget mot det uppfinningsenliga hjulet kan frambringa en vridning av hjulets löpbana 2 så att dess axel X2 svänges i ett vertikalplan som även innehåller den geometriska axeln X1 tillhörande fordonets drivningsskaft 7.A reaction force from the ground against the wheel according to the invention can produce a rotation of the wheel track 2 so that its axis X2 is pivoted in a vertical plane which also contains the geometric axis X1 belonging to the drive shaft 7 of the vehicle.

Denna inbördes svängning i vertikalplanet mellan axlarna X1, X2 medges genom att kopplingsorganen 5 är elastiskt eftergivliga.This mutual pivoting in the vertical plane between the shafts X1, X2 is allowed by the coupling means 5 being elastically resilient.

I enlighet med uppfinningen är kopplingsorganens elastiska ef- tergivlighet därvid vald så att vinkelställningen blir åtmins- tone 1:20 för det maximala vridande moment som uppkommer i den redovisade belastningssituationen.In accordance with the invention, the elastic resilience of the coupling means is then chosen so that the angular position becomes at least 1:20 for the maximum rotating torque which arises in the reported load situation.

Med hänvisning till fig 3 kan man anta att axeln X1 är horison- tell och att löpbanans 2 ena rand vilar mot ett horisontellt underlag 8. Om löpbanans 2 bredd är b och minsta avståndet mel- lan löpbanans 2 andra kant och underlaget 8 då är a, skall azb 21:20. Företrädesvis är azb àtminstone==1:l0.I utföringsexemp- let kan den vertikala lasten från axelskaftet 7 till hjulet vara ca 60 kg i en utföringsform, varvid det vridande momentet i figurens 3 plan kring skärningspunkten Z mellan axlarna X1, X2 i hjulflänsens 41 plan bli ca 100 Nm, då diametern d är 80 cm och a:b är 1:20. De elastiska kopplingsorganen 5 skall då dimensioneras för att etablera detta samband.Referring to Fig. 3, it can be assumed that the axis X1 is horizontal and that one edge of the tread 2 rests against a horizontal base 8. If the width of the tread 2 is b and the smallest distance between the other edge of the tread 2 and the base 8 is then a , shall azb 21:20. Preferably, azb is at least == 1: 10. In the exemplary embodiment, the vertical load from the axle shaft 7 to the wheel may be about 60 kg in one embodiment, the rotating moment in the plane of the figure 3 around the intersection point Z between the axles X1, X2 in the wheel flange 41 plan to be about 100 Nm, when the diameter d is 80 cm and a: b is 1:20. The elastic coupling means 5 must then be dimensioned to establish this connection.

Genom uppfinningen anvisas sålunda ett hjul med mycket stor vippbarhet i axelplanet, och denna stora vippbarhet utgör förutsättningen för att hjulet skall kunna löpa på ett känsligt underlag med varierande lutning utan att löpbanans kantpartier skall prägla besvärande spår i ett mjukt och känsligt underlag.The invention thus provides a wheel with very high tiltability in the axle plane, and this large tiltability is the prerequisite for the wheel to be able to run on a sensitive surface with varying inclination without the edge portions of the tread having troublesome tracks in a soft and sensitive surface.

Claims (5)

10 15 20 25 30 35 510 687 P a t e n t k r a v10 15 20 25 30 35 510 687 P a t e n t k r a v 1. Hjul för ett fordon som är avsett att kunna köras på känsliga underlag såsom gräsmattor eller markytor som skall be- sås med gräsfrö och/eller vältas, vilket hjul innefattar ett nav (4), en med navet väsentligen koaxiell löpbana (2) och ett elastiskt kopplingsorgan (5, 6) mellan navet (4) och löpbanan (2), kännetecknat av att löpbanan (2) har formen av ett cirku- lärcylindriskt styvt gitter och att det elastiska kopplings- organet (5, 6) är anordnat att erbjuda en vinkelställning av åtminstone 1:20 mellan löpbanans axel och navets axel i ett vertikalplan vid nominell vertikal lastöverföring från fordonet till hjulets centrum (Z).Wheels for a vehicle intended to be driven on sensitive surfaces such as lawns or ground surfaces to be covered with grass seed and / or overturned, which wheel comprises a hub (4), a tread substantially coaxial with the hub (2) and an elastic coupling member (5, 6) between the hub (4) and the raceway (2), characterized in that the raceway (2) has the shape of a circular-cylindrical rigid grid and that the elastic coupling member (5, 6) is arranged to offer an angular position of at least 1:20 between the axis of the treadmill and the axis of the hub in a vertical plane at nominal vertical load transfer from the vehicle to the center of the wheel (Z). 2. Hjul enligt krav 1, kännetecknat av att det elastiska kopplingsorganet innefattar ett eller flera gummielement (5).Wheel according to claim 1, characterized in that the elastic coupling member comprises one or more rubber elements (5). 3. Hjul enligt krav 2, kännetecknat av att förbindnings- element (3, 6) ansluter mellan löpbanan (2) och gummielementet/ gummielementen (5).Wheel according to Claim 2, characterized in that connecting elements (3, 6) connect between the tread (2) and the rubber element (s) (5). 4. Hjul enligt något av kraven l-3, kännetecknat av att vinkelställningen etableras för en vertikal belastning av hju- let uppgående till åtminstone 500 N.Wheel according to one of Claims 1 to 3, characterized in that the angular position is established for a vertical load on the wheel amounting to at least 500 N. 5. Användning av ett hjul enligt något av kraven 1-4 på ett motorfordon avsett att köras på känsliga markytor såsom våta gräsmattor eller matjordsbelagda ytor som skall besàs och vältas.Use of a wheel according to any one of claims 1-4 on a motor vehicle intended to be driven on sensitive ground surfaces such as wet lawns or topsoil to be sown and overturned.
SE9703890A 1997-10-24 1997-10-24 Wheels, especially for a garden vehicle and the use of such a wheel SE510687C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9703890A SE510687C2 (en) 1997-10-24 1997-10-24 Wheels, especially for a garden vehicle and the use of such a wheel
PCT/SE1999/000220 WO2000048848A1 (en) 1997-10-24 1999-02-18 A wheel, especially for a garden vehicle, as well as the use of such a wheel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703890A SE510687C2 (en) 1997-10-24 1997-10-24 Wheels, especially for a garden vehicle and the use of such a wheel
PCT/SE1999/000220 WO2000048848A1 (en) 1997-10-24 1999-02-18 A wheel, especially for a garden vehicle, as well as the use of such a wheel

Publications (3)

Publication Number Publication Date
SE9703890D0 SE9703890D0 (en) 1997-10-24
SE9703890L SE9703890L (en) 1999-04-25
SE510687C2 true SE510687C2 (en) 1999-06-14

Family

ID=26663112

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9703890A SE510687C2 (en) 1997-10-24 1997-10-24 Wheels, especially for a garden vehicle and the use of such a wheel

Country Status (2)

Country Link
SE (1) SE510687C2 (en)
WO (1) WO2000048848A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110402649B (en) * 2019-08-20 2020-09-01 江西省炎伟丞实业有限公司 Gardens are planted with grass seed seeder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1629715A (en) * 1921-08-19 1927-05-24 Lenhardt Fritz Resilient wheel
FR1348608A (en) * 1962-12-01 1964-01-10 Metalastik Ltd Elastic wheel
FR2519910A1 (en) * 1982-01-19 1983-07-22 Ouest Cie Produits Ind Wheel incorporating integral suspension - comprises irregularly shaped spokes which can undergo elastic deformation, for relative movement of hub
FR2676397B1 (en) * 1991-05-15 1997-03-21 Louis Berges WHEEL WITH INTEGRATED SUSPENSION ABSORBING DEFORMATION ENERGY.

Also Published As

Publication number Publication date
SE9703890D0 (en) 1997-10-24
SE9703890L (en) 1999-04-25
WO2000048848A1 (en) 2000-08-24

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