초록 ▼

A snowmobile has a body frame. A front frame is coupled with the body frame. The front frame is made of a casting. A pair of swing units are swingably supported by the front frame at first ends of the swing units. A pair of skis are supported by the swing units at second ends of the skies. A pair of

A snowmobile has a body frame. A front frame is coupled with the body frame. The front frame is made of a casting. A pair of swing units are swingably supported by the front frame at first ends of the swing units. A pair of skis are supported by the swing units at second ends of the skies. A pair of suspension assemblies are connected with the front frame at first ends of the suspension assemblies. The suspension assemblies also are connected with the second ends of the swing units at second ends of the suspension assemblies.

대표청구항 ▼

What is claimed is: 1. A snowmobile comprising a frame assembly, and a drive assembly depending from the frame assembly and adapted to abut the terrain so as to propel the frame assembly along the terrain, the frame assembly comprising a body frame, a front frame coupled with the body frame, the fr

What is claimed is: 1. A snowmobile comprising a frame assembly, and a drive assembly depending from the frame assembly and adapted to abut the terrain so as to propel the frame assembly along the terrain, the frame assembly comprising a body frame, a front frame coupled with the body frame, the front frame comprising a casting, a swing unit swingably supported by the casting at a first end of the swing unit, a ski supported by the swing unit at a second end of the swing unit, and a suspension assembly connected with the casting at a first end of the suspension assembly and connected with the second end of the swing unit at a second end of the suspension assembly, wherein the casting comprises a front section and a side section extending generally normal to the front section, the first end of the swing unit and the first end of the suspension assembly are journaled on the side section, and wherein the side section of the casting forms a recessed portion recessed inwardly, the first end of the swing unit is nested in the recessed portion. 2. The snowmobile as set forth in claim 1, wherein the casting comprises a front section and a side section extending generally normal to the front section, the first end of the swing unit and the first end of the suspension assembly are journaled on the side section. 3. The snowmobile as set forth in claim 1, wherein the front frame comprises at least two castings coupled with each other, each casting has a set of the swing units. 4. The snowmobile as set forth in claim 3, wherein the castings are generally symmetrically formed with each other. 5. The snowmobile as set forth in claim 3, wherein the castings are connected with each other at a location adjacent to the first ends of the swing units. 6. The snowmobile as set forth in claim 3, wherein the castings are connected with each other by a cross member. 7. The snowmobile as set forth in claim 6, wherein each one of the castings comprises a front section and a side section extending generally normal to the front section, the cross member connecting the respective side sections. 8. The snowmobile as set forth in claim 3 additionally comprising a steering linkage connected to the ski, the castings being connected with each other by a cross member, the steering linkage, at least in part, being journaled on the cross member. 9. A snowmobile comprising a frame assembly and an drive assembly depending from the frame assembly and adapted to abut the terrain so as to propel the frame assembly along the terrain, the frame assembly comprising a body frame, a support unit disposed in front of the body frame and coupled with the body frame, the support unit comprising at least two sections coupled with each other, each one of the sections being made of a casting, a pair of swing units, a first end of each one of the swing units being swingably supported by each one of the sections, and a pair of skis, each one of the skis being supported by a second end of one of the swing units, wherein each one of the sections of the support unit comprises a front portion and a side portion extending generally normal to the front portion, each of the first ends of the swing units being journaled on a respective side portion, and wherein each one of the side portions forms a recessed portion recessed inwardly, each of the first ends of the swing units being nested with a respective recessed portion. 10. The snowmobiles as set forth in claim 9 additionally comprising a pair of suspension assemblies, a first end of each one of the suspension assemblies being connected with a respective support unit, a second end of each one of the suspension assemblies being connected with the second end of a respective swing unit. 11. The snowmobile as set forth in claim 9, wherein each one of the sections of the support unit comprises a front portion and a side portion extending generally normal to the front portion, each of the first ends of the swing units being journaled on a respective side portion. 12. The snowmobile as set forth in claim 9, wherein the sections of the support unit are connected to each other at a location adjacent to the first ends of the swing units. 13. The snowmobile as set forth in claim 9, wherein the sections of the support unit are connected to each other by a cross member. 14. The snowmobile as set forth in claim 9 additionally comprising a steering linkage connected to the skis, the sections of the support unit being connected with each other by a cross member, the steering linkage, at least in part, being journaled on the cross member.