Easy entry seat system with single position memory and hold open feature

• US 8,967,719 B2
• Filed: 05/17/2011
• Issued: 03/03/2015
• Est. Priority Date: 05/17/2010
• Status: Active Grant

• Current Assignee: Magna Seating Incorporated (Magna International Incorporated)
• Original Assignee: Magna Seating Incorporated (Magna International Incorporated)
• Inventors: Ngiau, Christopher, Carroll, Jeffrey P, Calhoun, Jonathan A
• Primary Examiner(s): Nelson, Jr., Milton
• Application Number:
  US13/697,382
• Publication Number:
  US 20130057043A1
• Time in Patent Office: 1,386 Days
• Field of Search: 297/341, 297/342, 297/378.12, 297/378.1
• US Class Current: 297/341
• CPC Class Codes: B60N 2/123 and provided with memory locks

Abstract

A seat assembly for an automotive vehicle includes a seat cushion and a seat back for pivotal movement between an upright seating position and a forwardly dumped position. A recliner mechanism is provided for selectively actuating between a locked and unlocked condition allowing the pivotal movement of the seat back. A seat track assembly provides selective actuation between a locked and unlocked condition allowing fore and aft sliding movement of the seat assembly between a design position and a full forward position. An easy entry memory mechanism is operatively coupled to the recliner mechanism and the seat track assembly for selectively actuating the seat track assembly to the unlocked condition and provide movement of the seat assembly to the full forward position in response to pivotal movement of the seat back to the forwardly dumped position while maintaining memory of the design position.

Claims

1. A seat assembly for an automotive vehicle comprising:

a seat cushion;

a seat back operatively coupled to said seat cushion for pivotal movement between an upright seating position and a forwardly dumped position at least partially overlying said seat cushion;

a recliner mechanism operatively coupled between said seat cushion and said seat back for selectively actuating between a locked and unlocked condition allowing said pivotal movement of said seat back;

a seat track assembly coupled to said seat cushion for selective actuation between a locked and unlocked condition allowing fore and aft sliding movement of said seat assembly within the vehicle between a design position and a full forward position; and

an easy entry memory mechanism operatively coupled to said recliner mechanism and said seat track assembly for selectively actuating said seat track assembly to said unlocked condition and provide movement of said seat assembly to the full forward position in response to pivotal movement of said seat back to said forwardly dumped position while maintaining memory of said design position, said easy entry memory mechanism includes a control cam rotatably coupled to said seat track assembly and operatively coupled to said seat back for actuation in response to pivotal movement of said seat back between said upright seating position and said forwardly dumped position and a memory arm rotatably coupled to said seat track assembly and operatively coupled to said control cam for actuation between a raised position and a lowered position for maintaining said design position in response to rotation of said control cam;

wherein

said control cam is operatively coupled to said seat track assembly for actuation of said seat track assembly between said locked and unlocked conditions in response to rotation of said control cam, and

said memory arm includes a control end biased into engagement with said control cam and an opposite hook end for engaging with a stop tab on said seat track assembly when said memory arm is in said lowered position thereby defining said design position.

2. A seat assembly as set forth in claim 1 wherein said control cam includes a cam pin engaged with a cam surface on said memory arm for actuating said memory arm between said raised and lowered positions in response to rotation of said control cam.

3. A seat assembly as set forth in claim 2 further including a first biasing spring coupled between said control cam and said seat track assembly for biasing said control cam in a first direction.

4. A seat assembly as set forth in claim 3 further including a second biasing spring coupled between said control cam and said memory arm for maintaining engagement between said cam pin and said cam surface and biasing said memory arm to said raised position.

5. A seat assembly as set forth in claim 4 wherein said seat track assembly includes an upper track slidably coupled to a lower track, wherein said control cam and said memory arm are pivotally coupled to said upper track and said stop tab is fixed secured to said lower track defining said design position.

6. A seat assembly as set forth in claim 5 further including a control cable coupled between said control cam and said seat back for rotating said control cam in response to pivotal movement of said seat back between said seating position and said forwardly dumped position.

7. A seat assembly as set forth in claim 6 further including a release cable coupled between said control cam and said seat track assembly for actuating said seat track assembly between said locked and unlocked conditions in response to rotation of said control cam.

8. A seat assembly as set forth in claim 7 wherein said hook end of said memory arm includes a guide surface and an opposite facing hook surface for engaging said stop tab in said design position.