Toothed connection for mating steering system components

Patent metadata

Field	Value
Publication number	US-12486873-B2
Application number	US-202418671419-A
Country	US
Kind code	B2
Filing date	May 22, 2024
Priority date	May 23, 2023
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A connection assembly includes a male component having a male connection end portion. The connection assembly also includes a female component having a female connection end portion for receiving the male connection end within a bore defined therein, wherein the male component and the female component each have a non-circular cross-section within a connection assembly thereof. The connection assembly further includes a first plurality of teeth formed on an outer surface of the male component. The connection assembly yet further includes a second plurality of teeth formed on an inner surface of the female component.

First claim

What is claimed is:

1 . A connection assembly comprising:
a male component having a male connection end portion; a female component having a female connection end portion for receiving the male connection end within a bore defined therein, wherein the male component and the female component each have a non-circular cross-section within a connection assembly thereof and are secured to each other to prevent relative axial displacement between the male component and the female component; a first plurality of teeth formed on an outer surface of the male component; and a second plurality of teeth formed on an inner surface of the female component, wherein the non-circular cross-section of the male component comprises a flat surface on an outer surface thereof, wherein the non-circular cross-section of the female component comprises a flat surface on an inner surface thereof to partially define the bore of the female component, wherein the first plurality of teeth are formed on the flat surface of the male component and the second plurality of teeth are formed on the flat surface of the female component, wherein the first plurality of teeth and the second plurality of teeth are in contact with each other.

2 . A connection assembly comprising:
a male component having a male connection end portion; a female component having a female connection end portion for receiving the male connection end within a bore defined therein, wherein the male component and the female component each have a non-circular cross-section within a connection assembly thereof and are secured to each other to prevent relative axial displacement between the male component and the female component; a first plurality of teeth formed on an outer surface of the male component; and a second plurality of teeth formed on an inner surface of the female component, wherein the non-circular cross-section of the male component comprises a first flat surface and a second flat surface on opposing sides of the male component from each other, wherein the non-circular cross-section of the female component comprises a first flat surface and a second flat surface on opposing sides of the bore to partially define the bore of the female component, wherein the first plurality of teeth are formed on the first flat surface of the male component, the second plurality of teeth are formed on the first flat surface of the female component, further comprising a third plurality of teeth formed on the second flat surface of the male component and a fourth plurality of teeth formed on the second flat surface of the female component, wherein the first plurality of teeth and the second plurality of teeth are in contact with each other, wherein the third plurality of teeth and the fourth plurality of teeth are in contact with each other.

3 . The connection assembly of claim 2 , wherein the female component further comprises:
a first side connecting and extending between first ends of the first flat surface of the female component and the second flat surface of the female component; and a second side connecting and extending between second ends of the first flat surface of the female component and the second flat surface of the female component.

4 . The connection assembly of claim 3 , wherein the first side of the female component and the second side of the female component are each curved.

5 . The connection assembly of claim 3 , wherein the first side of the female component defines an axially extending slot from an end of the female component in longitudinal direction of the female component.

6 . The connection assembly of claim 3 , wherein the second side of the female component defines an axially extending slot from an end of the female component in longitudinal direction of the female component.

7 . The connection assembly of claim 3 , wherein the first side of the female component and the second side of the female component each define a respective axially extending slot from an end of the female component in longitudinal direction of the female component.

8 . The connection assembly of claim 2 , wherein the male component and the female component are secured to each other with a bolt and a nut.

9 . The connection assembly of claim 8 , wherein the bolt extends through the first flat side of the female component, the first flat side of the male component, the second side of the male component, and the second flat side of the female component.

10 . The connection assembly of claim 1 , wherein the male component and the female component are secured to each other by at least one of plastic injection, staking, welding, riveting, interference fit and brazing.

11 . The connection assembly of claim 1 , wherein the male component and the female component are parts of a steering shaft assembly in a vehicle steering system.

12 . The connection assembly of claim 11 , wherein the male component and the female component are parts of an intermediate shaft assembly.

13 . A vehicle steering system comprising:
a steering input shaft; an output gear translatable to adjust the position of road wheels of a vehicle; and an intermediate shaft assembly operatively coupled to the steering input shaft and the output gear, wherein the intermediate shaft comprises:
a male component having a male connection end portion, a first flat surface and a second flat surface, the first flat surface and the second flat surface on opposing sides of the male component at the male connection end portion;
a female component having a female connection end portion for receiving the male connection end within a bore defined therein, the female component further comprising a first flat surface and a second flat surface on opposing sides of the bore to partially define the bore of the female component, wherein the male component and the female component are secured to each other to prevent relative axial displacement between the male component and the female component;
a first plurality of teeth formed on the first flat surface of the male component;
a second plurality of teeth formed on the first flat surface of the female component;
a third plurality of teeth formed on the second flat surface of the male component; and
a fourth plurality of teeth formed on the second flat surface of the female component, wherein the first plurality of teeth and the second plurality of teeth are in contact with each other, wherein the third plurality of teeth and the fourth plurality of teeth are in contact with each other.

14 . The vehicle steering system of claim 13 , wherein the female component further comprises:
a first side connecting and extending between first ends of the first flat surface of the female component and the second flat surface of the female component; and a second side connecting and extending between second ends of the first flat surface of the female component and the second flat surface of the female component.

15 . The vehicle steering system of claim 14 , wherein the first side of the female component and the second side of the female component are each curved.

16 . The vehicle steering system of claim 14 , wherein only one of the first side of the female component and the second side of the female component defines an axially extending slot from an end of the female component in longitudinal direction of the female component.

17 . The vehicle steering system of claim 14 , wherein the first side of the female component and the second side of the female component each define a respective axially extending slot from an end of th

Assignees

• Steering Solutions Ip Holding

Inventors

• Partyka Michael E
• Knight William J
• Braem Marcus

Classifications

• F16D1/027

  non-disconnectable, e.g. involving gluing, welding or the like · CPC title

• B62D3/02

  mechanical · CPC title

• F16D2001/103

  the torque is transmitted via splined connections · CPC title

• F16D2001/102

  the torque is transmitted via polygon shaped connections · CPC title

• B62D1/16

  Steering columns · CPC title