Tunable suspension limiters for suspension arrangements

Patent metadata

Field	Value
Publication number	US-10718396-B2
Application number	US-201815881374-A
Country	US
Kind code	B2
Filing date	Jan 26, 2018
Priority date	Jan 26, 2018
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

A suspension limiter includes a diaphragm element configured to be placed in operable communication with a suspension such that a rate of increase in load per unit travel of compression of the suspension is reduced near a full travel of the suspension than would exist for the suspension if the diaphragm element were not present, the diaphragm element arranged to deform only elastically through the full travel of the suspension. Suspension arrangements and methods of loading suspension arrangements are also described.

First claim

What is claimed is:

1. A suspension arrangement, comprising:
a suspension limiter comprising:
a diaphragm element configured to be placed in operable communication with a suspension such that a rate of increase in load per unit travel of compression of the suspension is reduced near a full travel of the suspension than would exist for the suspension if the diaphragm element were not present, wherein the diaphragm element is configured to deform only elastically through the full travel of the suspension,
wherein the diaphragm element includes a diaphragm disc arranged along a compression axis, the diaphragm disc having:
a radially inner hub portion;
a radially outer rim portion;
a diaphragm portion extending between the hub portion and the rim portion; and
a puck fixed relative to the hub portion or the rim portion of the diaphragm disc, wherein the puck is configured to oppose compression of a suspension system spring by deforming the diaphragm portion of the diaphragm disc;

a spring movable between along the compression axis between a loaded position and an unloaded position, wherein the spring is spaced apart from the puck in the unloaded position, wherein the spring abuts the puck in the loaded position;
a piston connected between the puck and the diaphragm disc, wherein the piston is stacked along the translation axis between the puck and the diaphragm disc;
a fastener seated in the piston and coupling the puck to the piston;
a spacer connected between the puck and the diaphragm disc;
a housing with a mounting bracket fixed to the end cap and extending about the diaphragm disc; and
an end cap stacked along the translation axis on a side of the diaphragm disc opposite the puck, wherein the spacer is captive in the end cap and stacked axially along the translation axis between the diaphragm disc and the puck.

2. The suspension arrangement as recited in claim 1 , wherein the puck is fixed relative to at least one of the rim and/or the hub portion of the diaphragm disc.

3. The suspension arrangement as recited in claim 1 , wherein the diaphragm disc is an end diaphragm disc and further comprising at least one diaphragm disc pair stacked with the end diaphragm disc and the puck along the compression axis.

4. The suspension arrangement as recited in claim 3 , wherein the diaphragm disc pair is stacked between the end diaphragm disc and the puck.

5. The suspension arrangement as recited in claim 3 , wherein the end diaphragm disc is stacked between the puck and the diaphragm disc pair.

6. The suspension arrangement as recited in claim 1 , further comprising a piston connected between the puck and the diaphragm disc.

7. The suspension arrangement as recited in claim 6 , wherein the piston is stacked along the translation axis between the puck and the diaphragm disc.

8. The suspension arrangement as recited in claim 6 , further comprising a fastener seated in the piston and coupling the puck to the piston.

9. The suspension arrangement as recited in claim 1 , further comprising a spacer connected between the puck and the diaphragm disc.

10. The suspension arrangement as recited in claim 1 , further comprising an end cap stacked along the translation axis on a side of the diaphragm disc opposite the puck.

11. The suspension arrangement as recited in claim 10 , further comprising a housing including a mounting bracket fixed to the end cap and extending about the diaphragm disc.

12. The suspension arrangement as recited in claim 10 , further comprising a spacer captive in the end cap and axially stacked along the translation axis between the diaphragm disc and the puck.

13. The suspension arrangement as recited in claim 1 , wherein the diaphragm disc is a first end diaphragm disc and further comprising a second diaphragm disc stacked on a side of the first diaphragm disc opposite the puck, and at least one diaphragm disc pair stacked along the compression axis between the first end diaphragm disc and the second end diaphragm disc.

14. The suspension arrangement as recited in claim 1 , wherein the spring includes a coil body arranged along the compression axis or a leaf body intersecting the compression axis.

15. A method of loading a suspension arrangement, comprising:
exerting a compressive force against a suspension limiter; and
deforming the suspension limiter elastically such that a rate of increase in load per unit travel of compression of the suspension is reduced near a full travel of the suspension than would exist for the suspension if the diaphragm element were not present, wherein the diaphragm element is configured to deform only elastically through the full travel of the suspension,
wherein the suspension limiter comprises:
a diaphragm element configured to be placed in operable communication with a suspension such that a rate of increase in load per unit travel of compression of the suspension is reduced near a full travel of the suspension than would exist for the suspension if the diaphragm element were not present, wherein the diaphragm element is configured to deform only elastically through the full travel of the suspension,
wherein the diaphragm element includes a diaphragm disc arranged along a compression axis, the diaphragm disc having:
a radially inner hub portion;
a radially outer rim portion;
a diaphragm portion extending between the hub portion and the rim portion; and
a puck fixed relative to the hub portion or the rim portion of the diaphragm disc, wherein the puck is configured to oppose compression of a suspension system spring by deforming the diaphragm portion of the diaphragm disc;

a spring movable between along the compression axis between a loaded position and an unloaded position, wherein the spring is spaced apart from the puck in the unloaded position, wherein the spring abuts the puck in the loaded position;
a piston connected between the puck and the diaphragm disc, wherein the piston is stacked along the translation axis between the puck and the diaphragm disc;
a fastener seated in the piston and coupling the puck to the piston;
a spacer connected between the puck and the diaphragm disc;
a housing with a mounting bracket fixed to the end cap and extending about the diaphragm disc; and
an end cap stacked along the translation axis on a side of the diaphragm disc opposite the puck, wherein the spacer is captive in the end cap and stacked axially along the translation axis between the diaphragm disc and the puck.

16. The method as recited in claim 15 , further comprising tuning deformation of the suspension limiter by adding one or more diaphragm discs to the suspension limiter and/or increasing axial thickness of a spacer seated within the suspension limiter.

Assignees

• Goodrich Corp

Inventors

• King Michael

Classifications

• B60G7/04 Primary

  Buffer means for limiting movement of arms {(stops limiting fluid passage in fluid dampers F16F9/49; stroke-limiting stops for fluid dampers F16F9/58)} · CPC title

• B60G2206/72

  Steel · CPC title

• B60G2204/4502

  using resilient buffer · CPC title

• B60G2202/112

  longitudinally arranged · CPC title

• F16F1/027

  Planar, e.g. in sheet form; leaf springs · CPC title