Leaf spring assembly

Patent metadata

Field	Value
Publication number	US-9630467-B2
Application number	US-201514682379-A
Country	US
Kind code	B2
Filing date	Apr 9, 2015
Priority date	Apr 9, 2015
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A leaf spring assembly comprises a leaf spring having an axially extending member, an axis, a key portion disposed at an end thereof, first and second parallel elongate members extending radially from the attachment ring along an axis and include inner facing surfaces opposing one another along the axis to define a receiving slot that is configured to receive the end of the leaf spring. The leaf spring is joined with the leaf spring eye and a key slot, formed adjacent to a terminal end of the receiving slot and comprising an enlarged slot portion defined by a first shoulder formed in an inner facing surface of an elongate member and configured to receive the key portion disposed at the end of the axially extending member.

First claim

What is claimed is:

1. A leaf spring assembly comprising:
a leaf spring comprising an axially extending member having an axis and a key portion disposed at an end thereof;
a leaf spring eye comprising an attachment ring;
first and second parallel elongate members extending radially from the attachment ring along an axis and include inner facing surfaces opposing one another along the axis to define a receiving slot that is configured to receive the end of the leaf spring therein when the leaf spring is joined with the leaf spring eye; and
a key slot formed at an end of the receiving slot and comprising an enlarged slot portion defined by terminal end, a first shoulder that extends between an inner facing surface and a first wall of the first elongate member and configured to receive the key portion, disposed at the end of the axially extending member.

2. The leaf spring assembly of claim 1 , the key portion comprising an enlarged head defined by a shoulder extending from the axially extending member at the end thereof.

3. The leaf spring assembly of claim 2 , the first shoulder and terminal end operable to counteract forces acting along the axis of the axially extending member to arrest translational motion in the axial direction.

4. The leaf spring assembly of claim 1 , the inner facing surfaces comprising a coarse or roughened pattern.

5. The leaf spring assembly of claim 1 , the first and second parallel elongate members having chamfered or rounded leading edges adjacent the receiving slot.

6. The leaf spring assembly of claim 1 , the receiving slot and the key slot defining a lateral entrance for the axially extending member and the key portion.

7. The leaf spring assembly of claim 1 , further comprising aligned fastener openings extending through the first and second elongate members and the axially extending member for receipt of a fastener, the aligned fastener openings being spaced apart from the key portion and the key slot.

8. The leaf spring assembly of claim 1 , wherein the axially extending member is at least one of an axially extending leaf, an axially extending rod, and an axially extending flat member.

9. The leaf spring assembly of claim 1 , wherein the first shoulder faces towards and is disposed parallel to the terminal end.

10. A vehicle having a leaf spring assembly comprising:
a leaf spring comprising an axially extending member having an axis and a key portion having an enlarged head defined by shoulders disposed at an end thereof;
a leaf spring eye comprising an attachment ring;
first and second parallel elongate members extending radially from the attachment ring along an axis and include inner facing surfaces opposing one another along the axis to define a receiving slot that is configured to receive the end of the leaf spring therein when the leaf spring is joined with the leaf spring eye; and
a key slot formed adjacent to a terminal end of the receiving slot and comprising an enlarged slot portion defined by a first shoulder that extends between a first inner facing surface and a first wall of the first elongate member, and a second shoulder that extends between a second inner facing surface and a second wall of the second elongate member, and the key slot, being configured to receive the key portion, such that an end surface of the key portion abuts the terminal end.

11. The vehicle of claim 10 , the inner facing surfaces comprising a coarse or roughened pattern.

12. The vehicle of claim 10 , the first and second parallel elongate members having chamfered or rounded leading edges adjacent the receiving slot.

13. The vehicle of claim 10 , the receiving slot and the key slot defining a lateral entrance for the axially extending member and the key portion.

14. The vehicle of claim 10 , further comprising aligned fastener openings extending through the first and second elongate members and the axially extending member for receipt of a fastener.

15. The vehicle of claim 10 , the first shoulder, the second shoulder, and terminal end configured to counteract forces acting along the axis of the axially extending member to arrest translational motion in the axial direction.

16. The vehicle of claim 10 , wherein the axially extending member is constructed from a composite material.

17. The vehicle of claim 10 , the axially extending member is at least one of an axially extending leaf, an axially extending rod, and an axially extending flat member.

18. The vehicle of claim 10 , wherein the shoulders of the enlarged head are configured to engage the first shoulder and the second shoulder.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Soles Peter J
• Chen Jian

Classifications

• B60G11/10

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

• B60G11/12 Primary

  Links, pins, or bushes · CPC title

• B60G2204/121

  Mounting of leaf springs · CPC title

• B60G2206/82

  Joining · CPC title

• B60G2206/428

  Leaf springs · CPC title