Motor vehicle leaf spring assembly

Patent metadata

Field	Value
Publication number	US-10933707-B2
Application number	US-201916244184-A
Country	US
Kind code	B2
Filing date	Jan 10, 2019
Priority date	Jan 11, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A leaf spring assembly resiliently supporting a wheel carrier on a vehicle body of a motor vehicle. The leaf spring assembly including first and second spring leaves and a clamp having a clamping part exerting a clamping force whereby the first and second spring leaves are held together by the clamp. A bridging part arranged between the first spring leaf and the clamping part transmits at least part of the clamping force from the clamping part to the first spring leaf bridging the second spring leaf and reducing the clamping force exerted thereon.

First claim

What is claimed is:

1. A wheel suspension comprising:
a leaf spring having a first end section, a second end section opposite the first end section, and a suspension section between the first and second end sections, said suspension section including a first spring leaf and a second spring leaf;
a clamp in said suspension section exerting a clamping force on said leaf spring and pressing the first spring leaf and second spring leaf together;
a bridging part between said first spring leaf and said clamp, said bridging part transmits at least a portion of said clamping force between the first spring leaf and the clamp reducing the clamping force on the second spring leaf; and
said bridging part has a columnar configuration and extends through a correspondingly configured opening in said second spring leaf.

2. The wheel suspension of claim 1 wherein the bridging part reduces the clamping force on the second spring leaf by at least half of the clamping force produced by the clamp.

3. The wheel suspension of claim 1 wherein the first spring leaf is made of a metal material and the second spring leaf is made of a fiber composite material.

4. The wheel suspension of claim 1 including an intermediate layer, said intermediate layer between at least one of said first spring leaf and said second spring leaf, said clamp and said first spring leaf, or said second spring leaf and said clamp; and
said intermediate layer made of a metal material, a rubber-elastic material or a dimensionally stable plastic.

5. The wheel suspension of claim 1 wherein one end of said bridging part engages a clamping part of said clamp and an opposite end engages said first spring leaf in a force-transmitting manner.

6. The wheel suspension of claim 1 wherein said bridging part is connected to a pressure plate.

7. The wheel suspension of claim 1 wherein said bridging part has a hollow interior.

8. The wheel suspension of claim 7 wherein at least part of said clamp extends through the hollow interior of said bridging part.

9. The wheel suspension of claim 1 wherein said clamp includes a U-bolt having threaded free ends;
a clamping plate disposed on said threaded free ends and secured by threaded nuts engaging said threaded free ends of said U-bolt; and
said bridging part engaging said clamping plate.

10. A wheel suspension comprising:
a leaf spring having a suspension section including a first spring leaf and a second spring leaf;
a clamp holding the first spring leaf and second spring leaf adjacent one another, said clamp including a U-bolt having threaded free ends and clamp plate, said clamp plate disposed on said threaded free ends and secured by threaded nuts engaging said threaded free ends of said U-bolt, said first spring leaf and said second spring leaf sandwiched between said U-bolt and said clamp plate;
a bridging part between said first spring leaf and said clamp plate, said bridging part forming a force transmission path that bypasses said second spring leaf and transmits at least a portion of a clamping force from said clamp plate to said first spring leaf reducing the clamping force on the second spring leaf; and
said bridging part has a columnar configuration and extends through an opening in said second spring leaf.

11. The wheel suspension of claim 10 wherein a first end of said bridging part engages said clamp plate and a second end of said bridging part engages said first spring leaf.

12. The wheel suspension of claim 10 including an intermediate layer between said first spring leaf and said second spring leaf and between said second spring leaf and said clamp plate.

13. A wheel suspension comprising:
a leaf spring having a suspension section including a first spring leaf and a second spring leaf;
a clamp, holding the first spring leaf and second spring leaf adjacent one another, said clamp including a clamp plate adjacent said second spring leaf; and
a bridging part between said first spring leaf and said clamp plate, said bridging part extending through an opening in said second spring leaf and forming a force transmission path that bypasses said second spring leaf and transmits at least a portion of a clamping force directly from said clamp plate to said first spring leaf reducing the clamping force on the second spring leaf; and
a first end of said bridging part engages said clamp plate and a second end of said bridging part engages said first spring leaf.

Assignees

• Ford Global Tech Llc

Inventors

• Gerhards Thomas
• Consolaro Alberto Girelli
• Hintzen Ralf
• Mainz Daniel
• Souschek Rainer
• Wolf-Monheim Friedrich Peter
• Zandbergen Nicole

Classifications

• B60G2204/4306

  Bracket or knuckle for rigid axles, e.g. for clamping · CPC title

• B60G9/00

  Resilient suspensions of a rigid axle or axle housing for two or more wheels {(the axle being a part of a set of tandem axles B60G5/00-B60G5/065; with leaf springs B60G11/02-B60G11/08)} · CPC title

• B60G11/10

  characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle · CPC title

• B60G2206/73

  Rubber; Elastomers · CPC title

• B60G11/113

  Mountings on the axle (B60G11/107 takes precedence) · CPC title