Reciprocating rail movement suspension system
Generally, examples described herein may take the form of a bicycle including a front frame, a rear frame operably associated with the front frame and configured for coupling to a rear wheel, and a suspension system operably associated with the front frame and the rear frame. The suspension system includes a first connection structure operably coupling the front frame to the rear frame and a first sliding body pivotally coupled to the rear frame and configured to travel in a first direction along a substantially linear travel path and in a second direction opposite the first direction along the substantially linear travel path as the suspension system is compressed.
1. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame, wherein the second axle is disposed below the first axle and between the pair of rails.
2. The suspension system of claim 1 , wherein the sliding body travels in a first direction along a substantially linear travel path and in a second direction opposite the first direction along the substantially linear travel path as the suspension system moves from an at least partially extended state to an at least partially compressed state.
3. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame, wherein each of the rails includes a top attachment portion and a bottom attachment portion configured to attach the rails to the mount.
4. The suspension system of claim 3 , wherein the top attachment portion is a top crown that couples the rails together at a first end, and the bottom attachment portion is a bottom crown portion that couples the rails together at a second end opposite the first end.
5. The suspension system of claim 3 , wherein the top attachment portion includes an aperture configured to couple the respective rail to the mount at a first end, and the bottom attachment portion includes an aperture configured to couple the respective rail to the mount at a second end opposite the first end.
6. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame, and
an upper bushing and a lower bushing slidably coupled each of the rails, wherein the lower bushing is spaced apart from and positioned below the upper bushing along a length of the respective rail to facilitate sliding of the sliding body along the rails.
7. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame; and
a rocker link, wherein the mount is pivotally coupled to a first end of the rocker link by the first axle.
8. The suspension system of the claim 7 , wherein the rocker link is pivotally coupled to the rear frame by a third axle between the first end of the rocker link and a second end of the rocker link opposite the first end.
9. The suspension system of claim 8 , wherein the second end of the rocker link is pivotally coupled to a rear end of a shock assembly by a fourth axle, wherein the front end of the shock assembly is pivotally coupled to the front frame, and the shock assembly resists motion between the front frame and the rear frame.
10. The suspension system of claim 9 , wherein as the rear frame moves relative to the front frame, the shock assembly moves from an at least partially extended state to an at least partially compressed state, wherein the partial compression of the shock assembly causes the rocker link to pivot in a first direction around the first axle.
11. The suspension system of claim 10 , wherein as the rocker link pivots in the first direction around the first axle, the sliding body moves in a first direction along a substantially linear travel path.
12. The suspension system of claim 11 , wherein the third axle and the fourth axle to move along respective arcuate paths defined by the pivoting of the rocker link around the first axle.
13. The suspension system of claim 12 , wherein the rear end of the shock assembly and a portion of the rear frame pivotally coupled to the rear frame by the third axle move in a first direction along the respective arcuate paths defined by the respective third and fourth axles.
14. The suspension system of claim 13 , wherein as the shock assembly moves further from the least partially extended state to an at least partially compressed state, the rocker link to rotates further in the first direction around the first axle, such that the shock assembly rotates along the arcuate path of the fourth axle in a second direction opposite the first direction.
15. The suspension system of claim 14 , wherein as the shock assembly rotates along the arcuate path of the fourth axle in the second direction, the sliding body travels in a second direction opposite the first direction along the substantially linear travel path.
16. The suspension system of claim 15 , wherein the first direction of the sliding body is a downward and forward direction.
17. The suspension system of claim 16 , wherein the second direction of the sliding body is an upward and rearward direction.
18. The suspension system of claim 11 , wherein the substantially linear travel path is defined by the pair of rails.
19. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame, wherein the rear frame includes a rear wheel axis, and an instantaneous center of curvature (ICC) with respect to the rear wheel axis moves rearward as the suspension system begins to be compressed.
20. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame, wherein the sliding engagement of the sliding body with the pair of rails has a vertical component and a horizontal component, wherein the vertical component is greater than the horizontal component.
21. A suspension system for a two-wheeled vehicle comprising:
a front frame;
a rear frame operably coupled to the front frame by a sliding body assembly including:
a mount operably coupled to the rear frame and the front frame via first axle,
a pair of rails operably coupled to the mount,
a sliding body configured to slidably engage the pair of rails and including a second axle pivotally coupled to the rear frame, wherein the mount defines a body that surrounds the sliding body and the pair of rails.
22. The suspension system of claim 21 , wherein the sliding body assembly comprises a modular unit received in the front frame.
23. The suspension system of claim 21 , wherein the sliding body assembly is removably coupleable to the front frame.