Bicycle rear suspension
First Claim
Patent Images
1. A bicycle frame, comprising:
- a substantially rigid front triangle including a bottom bracket shell and a head tube for holding a front wheel via a fork;
a substantially rigid rear triangle for holding a rear wheel;
a top linkage pivotally connected to the front triangle at a top-front pivot axis and pivotally connected to the rear triangle at a top-rear pivot axis; and
a bottom linkage pivotally connected to the front triangle at a bottom-front pivot axis and pivotally connected to the rear triangle at a bottom-rear pivot axis;
the top-front, top-rear, bottom-front, and bottom-rear pivot axes positioned such that at 0% suspension compression, a line extending from the top-rear pivot axis through the top-front pivot axis intersects a line extending from the bottom-rear pivot axis through the bottom-front pivot axis at a focus that is located in a space bounded by;
a front line that is an axis of the head tube,a bottom line extending horizontally from an axis of the bottom bracket shell,a top line 130 mm above and parallel to the bottom line, anda rear line that is perpendicular to the bottom line and the top line and 200 mm in front of an axis of the bottom bracket shell.
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Abstract
A bicycle frame includes substantially rigid front and rear triangles that are pivotally connected to one another by a pair of pivoting linkages.
73 Citations
17 Claims
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1. A bicycle frame, comprising:
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a substantially rigid front triangle including a bottom bracket shell and a head tube for holding a front wheel via a fork; a substantially rigid rear triangle for holding a rear wheel; a top linkage pivotally connected to the front triangle at a top-front pivot axis and pivotally connected to the rear triangle at a top-rear pivot axis; and a bottom linkage pivotally connected to the front triangle at a bottom-front pivot axis and pivotally connected to the rear triangle at a bottom-rear pivot axis; the top-front, top-rear, bottom-front, and bottom-rear pivot axes positioned such that at 0% suspension compression, a line extending from the top-rear pivot axis through the top-front pivot axis intersects a line extending from the bottom-rear pivot axis through the bottom-front pivot axis at a focus that is located in a space bounded by; a front line that is an axis of the head tube, a bottom line extending horizontally from an axis of the bottom bracket shell, a top line 130 mm above and parallel to the bottom line, and a rear line that is perpendicular to the bottom line and the top line and 200 mm in front of an axis of the bottom bracket shell. - View Dependent Claims (2, 3, 4, 5)
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6. A bicycle frame, comprising:
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a substantially rigid front triangle including a bottom bracket shell and a head tube for holding a front wheel via a fork; a substantially rigid rear triangle for holding a rear wheel; a top linkage pivotally connected to the front triangle at a top-front pivot axis and pivotally connected to the rear triangle at a top-rear pivot axis; and a bottom linkage pivotally connected to the front triangle at a bottom-front pivot axis and pivotally connected to the rear triangle at a bottom-rear pivot axis; the top-front, top-rear, bottom-front, and bottom-rear pivot axes positioned such that at 0% suspension compression, a line extending from the top-rear pivot axis through the top-front pivot axis intersects a line extending from the bottom-rear pivot axis through the bottom-front pivot axis at a focus that is located in a space bounded by; a bottom line extending horizontally 80 mm above an axis of the bottom bracket shell, a top line extending horizontally 130 mm above an axis of the bottom bracket shell, a rear line that is perpendicular to the bottom line and the top line and 250 mm in front of an axis of the bottom bracket shell, and a front line that is parallel to the rear line and 320 mm in front of the axis of the bottom bracket shell. - View Dependent Claims (7, 8, 9, 10)
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11. A bicycle frame, comprising:
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a substantially rigid front triangle including a bottom bracket shell and a head tube for holding a front wheel via a fork; a substantially rigid rear triangle for holding a rear wheel; a top linkage pivotally connected to the front triangle at a top-front pivot axis and pivotally connected to the rear triangle at a top-rear pivot axis; and a bottom linkage pivotally connected to the front triangle at a bottom-front pivot axis and pivotally connected to the rear triangle at a bottom-rear pivot axis; the top-front, top-rear, bottom-front, and bottom-rear pivot axes positioned such that at sagged front and back suspension compression, a line extending from the top-rear pivot axis through the top-front pivot axis intersects a line extending from the bottom-rear pivot axis through the bottom-front pivot axis at a focus that is located in a space bounded by; a front line that is an axis of the head tube, a bottom line extending horizontally 30 mm above an axis of the bottom bracket shell, a top line extending horizontally 70 mm above an axis of the bottom bracket shell, and a rear line that is perpendicular to the bottom line and the top line and 190 mm in front of an axis of the bottom bracket shell. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification