Suspension assembly for a vehicle

Patent metadata

Field	Value
Publication number	US-11034409-B2
Application number	US-201816633996-A
Country	US
Kind code	B2
Filing date	Jul 27, 2018
Priority date	Jul 31, 2017
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A suspension assembly for a vehicle includes a swing arm having a proximal end configured to be pivotally connected to a frame of the vehicle, and a distal end configured to support a ground-engaging member of the vehicle. The suspension assembly also includes a rocker link pivotally connected to the swing arm about a rocker link pivot axis from which first and second portions of the rocker link extend in divergent directions. The suspension assembly also includes a linking arm configured to be pivotally connected to the frame, and pivotally connected to the first portion of the rocker link. The suspension assembly also includes a shock absorber that is at least one of: pivotally connected to the linking arm, and configured to be pivotally connected to the frame. The shock absorber is pivotally connected to the second portion of the rocker link.

First claim

What is claimed is:

1. A suspension assembly for a vehicle, comprising:
a swing arm having a proximal end and a distal end, the proximal end of the swing arm being configured to be pivotally connected to a frame of the vehicle about a swing arm pivot axis, the distal end of the swing arm being configured to support a ground-engaging member of the vehicle;
a rocker link pivotally connected to the swing arm about a rocker link pivot axis, the rocker link having a first portion and a second portion extending in divergent directions from the rocker link pivot axis;
a linking arm configured to be pivotally connected to the frame of the vehicle about a first linking arm pivot axis, the linking arm being pivotally connected to the first portion of the rocker link about a second linking arm pivot axis; and
a shock absorber being pivotable about a first shock absorber pivot axis, the shock absorber being at least one of:
pivotally connected to the linking arm about the first shock absorber pivot axis; and
configured to be pivotally connected to the frame about the first shock absorber pivot axis such that the first shock absorber pivot axis is defined by a pivot established at least between the shock absorber and the frame;

the shock absorber being pivotally connected to the second portion of the rocker link about a second shock absorber pivot axis.

2. The suspension assembly of claim 1 , wherein a distance between the second shock absorber pivot axis and the rocker link pivot axis is different from a distance between the second linking arm pivot axis and the rocker link pivot axis.

3. The suspension assembly of claim 2 , wherein the distance between the second shock absorber pivot axis and the rocker link pivot axis is greater than the distance between the second linking arm pivot axis and the rocker link pivot axis.

4. The suspension assembly of claim 1 , wherein, when the suspension assembly is in a driver loaded state, a distance between the first linking arm pivot axis and the second linking arm pivot axis is greater than a distance between the first shock absorber pivot axis and the second shock absorber pivot axis.

5. The suspension assembly of claim 1 , wherein:
the shock absorber is pivotally connected to the linking arm; and
the first shock absorber pivot axis and the first linking arm pivot axis are offset from one another.

6. The suspension assembly of claim 1 , wherein the first shock absorber pivot axis and the first linking arm pivot axis are coaxial.

7. The suspension assembly of claim 1 , wherein the shock absorber is configured to be pivotally connected to the frame about the first shock absorber pivot axis.

8. The suspension assembly of claim 1 , wherein, independent of a load state of the suspension assembly, an axis passing through the second shock absorber pivot axis and the second linking arm pivot axis extends more vertically than horizontally.

9. The suspension assembly of claim 1 , wherein the first linking arm pivot axis is vertically higher than the swing arm pivot axis.

10. The suspension assembly of claim 1 , wherein an axis extending through the first shock absorber pivot axis and the second shock absorber pivot axis intersects the first linking arm pivot axis.

11. The suspension assembly of claim 1 , wherein the shock absorber extends generally horizontally in a full bump state of the suspension assembly.

12. The suspension assembly of claim 1 , wherein the shock absorber and the rocker link form an acute angle in a full droop state of the suspension assembly.

13. The suspension assembly of claim 1 , wherein the shock absorber comprises a damper and a spring.

14. The suspension assembly of claim 1 , wherein:
the swing arm defines a hollow space; and
the rocker link, the linking arm and the shock absorber at least partially extend within the hollow space.

15. The suspension assembly of claim 1 , wherein the shock absorber is disposed above the linking arm.

16. The suspension assembly of claim 1 , wherein the rocker link and the linking arm form an acute angle.

17. The suspension assembly of claim 1 , wherein the second portion of the rocker link is vertically above the first portion of the rocker link.

18. The suspension assembly of claim 1 , wherein the rocker link, the linking arm and the shock absorber extend through a common vertical plane.

19. A vehicle, comprising:
the frame;
the suspension assembly of claim 1 ; and
the ground-engaging member connected to the distal end of the swing arm of the suspension assembly.

20. The vehicle of claim 19 , further comprising a muffler that extends below the rocker link, the linking arm and the shock absorber.

21. The vehicle of claim 19 , further comprising a muffler, the linking arm being positioned, vertically, between the muffler and the shock absorber.

22. The vehicle of claim 19 , wherein:
the ground-engaging member is a wheel having a wheel rotation axis;
the swing arm pivot axis and the wheel rotation axis extend along a plane; and
the linking arm extends across the plane.

23. The vehicle of claim 19 , wherein the suspension assembly is a rear suspension assembly.

24. The suspension assembly of claim 1 , wherein a straight line extends through the rocker link pivot axis, the second linking arm pivot axis and the second shock absorber pivot axis.

25. The suspension assembly of claim 1 , wherein the first portion and the second portion of the rocker link extend in substantially opposite directions from the rocker link pivot axis.

Assignees

• Bombardier Recreational Products Inc

Inventors

• Hebert Sebastien
• Maltais-Larouche Emile

Classifications

• B60G3/14

  the arm being rigid · CPC title

• B62K5/08

  with steering devices acting on two or more wheels · CPC title

• B62K2005/001

  Suspension details for cycles with three or more main road wheels · CPC title

• B62K5/027 Primary

  Motorcycles with three wheels (specially adapted for disabled riders B62K5/023) · CPC title

• B60G2300/122

  Trikes · CPC title