A tilting, preferably three-wheeled, vehicle is disclosed that has a tilting mechanism that allows the vehicle to have leaning characteristics substantially similar to those offered by an in-line two-wheeled vehicle, but that does not require complex linkages and/or control systems to operate effect
A tilting, preferably three-wheeled, vehicle is disclosed that has a tilting mechanism that allows the vehicle to have leaning characteristics substantially similar to those offered by an in-line two-wheeled vehicle, but that does not require complex linkages and/or control systems to operate effectively. A tilting linkage is operably secured to a frame to allow a pair of spaced apart wheels to remain substantially aligned with the plane of the vehicle throughout its range of movement while still allowing the steering axes of each wheel to intersect the substantially vertical centerline of each wheel. The linkage also allows the caster angle of each wheel's pivot axis can be optimized independently of the angle of the vehicle's handlebar steering shaft.
대표청구항▼
1. A tilting wheeled vehicle having: an elongated frame defining a frame plane extending substantially vertically along a longitudinal centerline of said frame, said frame tiltable from side-to-side defining a range of movement of said frame;a first tilting linkage operably secured to the frame at a
1. A tilting wheeled vehicle having: an elongated frame defining a frame plane extending substantially vertically along a longitudinal centerline of said frame, said frame tiltable from side-to-side defining a range of movement of said frame;a first tilting linkage operably secured to the frame at a first mounting pivot and a second mounting pivot, said first tilting linkage operably securing a first wheel to said frame at said first and second mounting pivots, said first and second mounting pivots spaced apart from each other and aligned within said frame plane;said first wheel pivotally secured to said first linkage defining a first pivot axis and having a substantially vertical longitudinal centerline defining a first wheel plane that intersects said substantially vertical longitudinal centerline, said first pivot axis substantially intersecting said first wheel plane;a second tilting linkage operably secured to the frame at said first mounting pivot and said second mounting pivot such that said first and second tilting linkages pivot about said frame plane, said second tilting linkage operably securing a second wheel to said frame at said first and second mounting pivots, said first and second tilting linkages independently pivotable about said first and second mounting pivots, said second wheel spaced apart from and aligned substantially parallel to said first wheel;said second wheel pivotally secured to said second linkage defining a second pivot axis and having a second substantially vertical longitudinal centerline defining a second wheel plane that intersects said second pivot axis substantially intersecting said second wheel plane; and,said first pivot axis and said second pivot axis aligned substantially parallel to said frame plane through said range of movement of said frame. 2. The tilting wheeled vehicle of claim 1, wherein said frame has a front, a back, a left side, and a right side and said frame is tiltable so that said frame plane may tilt in the direction between said left side and said right side, and further including a rear wheel operably secured toward the back of said frame;said first and second tilting linkages operably secured toward the front of said frame thereby defining a tilting three-wheeled vehicle. 3. The titling wheeled vehicle of claim 2, wherein said first tilting linkage has a first upper arm pivotally secured to said first mounting pivot and having a first distal end;a first lower arm pivotally secured to said second mounting pivot and having a second distal end;a first kingpin extending between said first upper arm and said first lower arm toward said first and second distal ends, said first kingpin aligned substantially parallel to the frame plane of the vehicle; and,said first wheel operably secured to said first kingpin. 4. The tilting wheeled vehicle of claim 3, wherein said second linkage has a second upper arm pivotally secured to said first mounting pivot, said second upper arm has an opposite third distal end and said second linkage has a second lower arm pivotally secured to the second mounting pivot, said second lower arm has an opposite fourth distal end, and further including: a second kingpin extending between said second upper arm and said second lower arm toward said third and fourth distal ends, said second kingpin aligned substantially parallel to the frame plane of the vehicle and said first kingpin; and,said second wheel is operably secured to said second kingpin. 5. The tilting vehicle of claim 1, wherein said vehicle is a conventional motorcycle and said first and second linkages are detachably secured to said motorcycle. 6. The tilting vehicle of claim 2, further including a steering shaft operably secured to said frame, said steering shaft aligned substantially parallel to said frame plane. 7. The tilting vehicle of claim 6, further including a handle bar operably secured to said steering shaft, and a steering linkage extending between said steering shaft and said first and second wheels so as to allow a rider to turn said first and second wheels about said first and second pivot axes, respectively, by turning the handle bar about said steering shaft thereby steering the vehicle. 8. The tiling vehicle of claim 3, further including a suspension system operably secured to said first and second linkages. 9. The tilting vehicle of claim 8, wherein said suspension system includes a compression spring operably positioned between said first wheel and said first kingpin.
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