Power pack for electric power steering system

Patent metadata

Field	Value
Publication number	US-2022306184-A1
Application number	US-202117235570-A
Country	US
Kind code	A1
Filing date	Apr 20, 2021
Priority date	Mar 25, 2021
Publication date	Sep 29, 2022
Grant date	—

Abstract

A manual power pack assembly for an electric power steering (EPS) system includes a motor housing at least partially enclosing a motor and having an outer diameter. The manual power pack assembly also includes a connector plate formed of a material comprising plastic, the connector plate having a first side, a second side, and a cylinder extending from the first side. The manual power pack further includes a metal ring disposed on an inner diameter of the cylinder and in contact with the outer diameter of the motor housing.

First claim

Having thus described the invention, it is claimed:

1 . A manual power pack assembly for an electric power steering (EPS) system, the manual power pack assembly comprising:
a motor housing at least partially enclosing a motor and having an outer diameter; a connector plate formed of a material comprising plastic, the connector plate having a first side, a second side, and a cylinder extending from the first side; and a metal ring disposed on an inner diameter of the cylinder and in contact with the outer diameter of the motor housing.

2 . The manual power pack assembly of claim 1 , wherein the motor housing is press fit to the connector plate based on relative sizing of the outer diameter of the motor housing and the metal ring.

3 . The manual power pack assembly of claim 1 , wherein the metal ring extends 360 degrees around the inner diameter of the cylinder.

4 . The manual power pack assembly of claim 1 , wherein the metal ring is overmolded to the cylinder of the connector plate.

5 . The manual power pack assembly of claim 1 , wherein the connector plate defines a hole extending therethrough from the first side to the second side, the hole configured to receive one or more electrical connectors and/or pins.

6 . The manual power pack assembly of claim 1 , wherein the first side of the connector plate includes one or more electrical connector pins integrally formed thereon.

7 . The manual power pack assembly of claim 1 , further comprising a metal heat sink disposed on the second side of the connector plate.

8 . The manual power pack assembly of claim 7 , wherein the metal heat sink comprises a plurality of extruded fins.

9 . The manual power pack assembly of claim 7 , wherein the metal heat sink is overmolded to the second side of the connector plate.

10 . The manual power pack assembly of claim 1 , further comprising a controller board press fit to the second side of the connector plate with a plurality of pins extending from the connector plate away from the second side.

11 . The manual power pack assembly of claim 10 , wherein the metal ring includes at least one leg extending radially inwardly or radially outwardly, relative to the cylinder, the controller board electrically grounded with a metal mechanical fastener coupled to the controller board and the at least one leg of the metal ring.

12 . A connector plate for a manual power pack assembly, the connector plate comprising:
a first side; a second side; a cylinder extending from the first side, wherein the connector plate is formed of a material comprising plastic; a metal ring disposed on an inner diameter of the cylinder; and a plurality of pins extending from the second side, the plurality of pins configured to be inserted into a controller board.

13 . The connector plate of claim 12 , wherein the metal ring extends 360 degrees around the inner diameter of the cylinder.

14 . The connector plate of claim 12 , wherein the metal ring is overmolded to the cylinder of the connector plate.

15 . The connector plate of claim 12 , wherein the connector plate defines a hole extending therethrough from the first side to the second side, the hole configured to receive one or more electrical connectors and/or pins.

16 . The connector plate of claim 12 , wherein the first side of the connector plate includes one or more electrical connector pins integrally formed thereon.

17 . The connector plate of claim 12 , further comprising a metal heat sink disposed on the second side of the connector plate.

Assignees

• Steering Solutions Ip Holding

Inventors

• Longuemare Pierre C
• Yang Kun
• Zhang Yang
• Shen Sean Syc

Classifications

• B62D5/046

  Controlling the motor · CPC title

• H05K7/209

  Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20909 takes precedence) · CPC title

• B62D6/00

  Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits (means for initiating a change in direction B62D1/00; steering valves B62D5/06; combined with means for inclining the vehicle body or wheels on bends B62D9/00) · CPC title

• B62D5/0406 Primary

  including housing for electronic control unit · CPC title

• H02K11/40

  Structural association with grounding devices · CPC title