Vehicle suspension linkage
Disclosed herein is a two-wheel vehicle suspension linkage. The suspension linkage includes a suspended body- 1 , a seatstay, a link body- 3 , a chainstay, a link body- 5 , and a link body- 6 operatively coupled with one another. The link body- 3 includes jointed connections with the suspended body- 1 defining an IVC[1][3], the chainstay defining an IVC[3][4], and the link body- 6 defining an IVC[3][6]. The chainstay includes a jointed connection with the seatstay defining an IVC[2][4]. The link body- 5 includes jointed connections with suspended body- 1 defining an IVC[1][5], seatstay defining an IVC[2][5], and the link body- 6 defining an IVC[5][6]. A lower base line is defined by IVC[1][3] and IVC[3][4]. An upper base line is defined by IVC[1][5] and IVC[2][5]. The IVC[5][6] is located outside the upper and lower base lines. The suspension linkage includes a damper unit configured to resist movement between two or more of the bodies.
1 . A suspension linkage for two wheeled vehicles comprising:
a plurality of link bodies including:
a suspended body, a second body, a third body, a fourth body, a fifth body, and a sixth body operatively coupled with one another defining a plurality of instantaneous velocity centers (IVCs), the plurality of IVCs comprising:
an IVC[13][15] ( 20 ) at a jointed connection between the suspended body and the third body;
an IVC[13][17] ( 21 ) at a jointed connection between the suspended body and the fifth body;
an IVC[15][16] ( 24 ) at a jointed connection between the third body and the fourth body;
an IVC[15][18] ( 25 ) at a jointed connection between the third body and the sixth body;
an IVC[14][17] ( 23 ) at a jointed connection between the second body and the fifth body;
an IVC[17][18] ( 26 ) at a jointed connection between the fifth body and the sixth body; and
a hidden IVC[13][18] ( 42 ); and
a migration path IVC[13][18] ( 63 ); and
a shock assembly configured to resist movement between two or more of the suspended body, the second body, the third body, the fourth body, the fifth body, or the sixth body, wherein the hidden IVC[13][18] ( 42 ) moves at least partially upward along the migration path IVC[13][18] ( 63 )
as the suspension linkage moves from an extended state to a compressed state.
2 . The suspension linkage of claim 1 , wherein the fourth body includes a concentric pivot connection with at least two other link bodies of the plurality of link bodies.
3 . The suspension linkage of claim 2 , wherein the concentric pivot defines a migration path that reverses.
4 . The suspension linkage of claim 1 , wherein the second body is a wheel carrier body.
5 . The suspension linkage of claim 1 , wherein the fourth body is a wheel carrier body.
6 . The suspension linkage of claim 1 , wherein the line defined by the IVC[15][18] ( 25 ) and the IVC[17][18] ( 26 ) is located outside the line segment defined between the IVC[13][15] ( 20 ) and the IVC[15][16] ( 24 ) when the suspension linkage is in the extended state.
7 . The suspension linkage of claim 1 , wherein the line defined by the IVC[15][18] ( 25 ) and the IVC[17][18] ( 26 ) is located outside the line segment defined between the IVC[13][15] ( 20 ) and the IVC[15][16] ( 24 ) when the suspension linkage is in the compressed state.
8 . The suspension linkage of claim 1 , wherein the IVC[17][18] ( 26 ) is located above a line segment defined between the IVC[13][17] ( 21 ) the IVC[14][17] ( 23 ) in at least one instance.
9 . The suspension linkage of claim 8 , wherein the IVC[17][18] ( 26 ) is located above the line segment defined between the IVC[13][17] ( 21 ) the IVC[14][17] ( 23 ) when the suspension linkage is in the extended state.
10 . The suspension linkage of claim 8 , wherein the IVC[17][18] ( 26 ) is located above the line segment defined between the IVC[13][17] ( 21 ) the IVC[14][17] ( 23 ) when the suspension linkage is in the compressed state.
11 . The suspension linkage of claim 1 , wherein a migration path of a dynamic instantaneous velocity center (DIVC) moves rearward.
12 . The suspension linkage of claim 1 , wherein a migration path of at least one of the plurality of IVCs reverses.
13 . The suspension linkage of claim 1 , wherein the hidden IVC[13][18] ( 42 ) moves entirely upward along the migration path IVC[13][18] ( 63 ) as the suspension linkage moves from the extended state to the compressed state.
14 . The suspension linkage of claim 1 , wherein the hidden IVC[13][18] ( 42 ) moves rearward along at least a portion of the migration path IVC[13][18] ( 63 ).
15 . The suspension linkage of claim 14 , wherein the hidden IVC[13][18] ( 42 ) moves entirely rearward along migration path IVC[13][18] ( 63 ) as the suspension linkage moves from the extended state to the compressed state.
16 . The suspension linkage of claim 1 , wherein at least a portion of the migration path IVC[13][18] ( 63 ) is located rearward of the IVC[13][17] ( 21 ).
17 . The suspension linkage of claim 1 , wherein at least a portion of the migration path IVC[13][18] ( 63 ) is located rearward of the IVC[13][15] ( 20 ).
18 . The suspension linkage of claim 1 , wherein at least a portion of the migration path IVC[13][18] ( 63 ) is located in front of the IVC[13][15] ( 20 ).
19 . A suspension linkage for two wheeled vehicles comprising:
a plurality of link bodies including:
a suspended body, a second body, a third body, a fourth body, a fifth body, and a sixth body operatively coupled with one another defining a plurality of instantaneous velocity centers (IVCs) comprising at least eight known IVCs;
a driven wheel rotatably coupled to at least one of the second body, the third body, the fourth body, the fifth body, or the sixth body, the driven wheel defining a driven wheel axis path (DWAP); and
a shock assembly configured to resist movement between two or more of the link bodies, wherein:
a migration path of at least one of the known IVCs reverses as the DWAP migrates in a single direction.
20 . The suspension linkage of claim 19 , wherein:
the third body ( 121 ) includes:
a jointed connection with the suspended body ( 119 ) defining a known IVC[1][3] ( 126 ),
a jointed connection with the fourth ( 122 ) defining a known IVC[3][4] ( 130 ), and
a jointed connection with the sixth body ( 124 ) defining a known IVC[3][6] ( 130 );
the fourth ( 122 ) includes:
a jointed connection with the second body ( 120 ) defining a known IVC[2][4] ( 128 ),
a jointed connection with the sixth body ( 124 ) defining a known IVC[4][6] ( 130 ); and
the fifth body ( 123 ) includes:
a jointed connection with the suspended body ( 119 ) defining a known IVC[1][5] ( 127 ),
a jointed connection with the second body ( 120 ) defining a known IVC[2][5] ( 129 ), and
a jointed connection with the sixth body ( 124 ) defining a known IVC[5][6] ( 131 ).
21 . The suspension linkage of claim 20 , wherein the known IVC[3][4] ( 130 ), the known IVC[3][6] ( 130 ), and the known IVC[4][6] ( 130 ) are defined at a concentric pivot.
22 . The suspension linkage of claim 20 , wherein the known IVC[3][4] ( 130 ), the known IVC[3][6] ( 130 ), and the known IVC[4][6] ( 130 ) define the migration path that reverses as the DWAP migrates in the single direction.
23 . The suspension linkage of claim 19 , wherein:
the known IVCs comprise a pivotal connection between a wheel carrier body of the plurality of link bodies and at least two other link bodies of the plurality of link bodies; and
the pivotal connection defines the migration path that reverses as the DWAP migrates in the single direction.
24 . The suspension linkage of claim 19 , wherein:
the known IVCs comprise a pivotal connection between a brake carrier body of the plurality of link bodies and at least two other link bodies of the plurality of link bodies; and
the pivotal connection defines the migration path that reverses as the DWAP migrates in the single direction.
25 . The suspension linkage of claim 19 , wherein:
the fourth body is a chainstay body;
the known IVCs comprise a jointed connection between the fourth body and at least one other link body of the plurality of link bodies; and
the jointed connection defines the migration path that reverses as the DWAP migrates in the single direction.
26 . The suspension linkage of claim 19 , wherein a migration path of a dynamic instantaneous velocity center (DIVC) moves rearward as the DWAP migrates in a direction from an extended state to a compressed state.
27 . A suspension linkage for two wheeled vehicles comprising:
a plurality of link bodies including:
a suspended body, a second body, a third body, a fourth body, a fifth body, and a sixth body operatively coupled with one another defining a plurality of instantaneous velocity centers (IVCs), the plurality of IVCs comprising:
an IVC[13][15] ( 20 ) at a jointed connection between the suspended body and the third body;
an IVC[13][17] ( 21 ) at a jointed connection between the suspended body and the fifth body;
an IVC[15][16] ( 24 ) at a jointed connection between the third body and the fourth body;
an IVC[15][18] ( 25 ) at a jointed connection between the third body and the sixth body;
an IVC[14][17] ( 23 ) at a jointed connection between the second body and the fifth body;
an IVC[17][18] ( 26 ) at a jointed connection between the fifth body and the sixth body; and
a hidden IVC[13][18] ( 42 ); and
a migration path IVC[13][18] ( 63 ); and
a shock assembly configured to resist movement between two or more of the suspended body, the second body, the third body, the fourth body, the fifth body, or the sixth body, wherein:
at least a portion of the migration path IVC[13][18] ( 63 ) is located rearward of the IVC[13][17] ( 21 ).
28 . The suspension linkage of claim 27 , wherein the hidden IVC[13][18] ( 42 ) moves at least partially upward along the migration path IVC[13][18] ( 63 ) as the suspension linkage moves from an extended state to a compressed state.
29 . The suspension linkage of claim 28 , wherein the hidden IVC[13][18] ( 42 ) moves entirely upward along the migration path IVC[13][18] ( 63 ) as the suspension linkage moves from the extended state to the compressed state.
30 . The suspension linkage of claim 27 , wherein the hidden IVC[13][18] ( 42 ) moves at least partially rearward along the migration path IVC[13][18] ( 63 ) as the suspension linkage moves from an extended state to a compressed state.
31 . The suspension linkage of claim 30 , wherein the hidden IVC[13][18] ( 42 ) moves entirely rearward along the migration path IVC[13][18] ( 63 ) as the suspension linkage moves from the extended state to the compressed state.
32 . The suspension linkage of claim 27 , wherein at least a portion of the migration path IVC[13][18] ( 63 ) is located rearward of the IVC[13][15] ( 20 ).
33 . The suspension linkage of claim 27 , wherein at least a portion of the migration path IVC[13][18] ( 63 ) is located in front of IVC[13][15] ( 20 ).