Back-rest pivot fitting and seat with folding back-rest

Patent metadata

Field	Value
Publication number	US-11718202-B2
Application number	US-202017606102-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Apr 26, 2019
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

A back-rest pivot fitting for a seat, having at least a seat pan, a folding back-rest, which is pivotable coupled to the seat pan, and a pivot fitting. The pivot fitting may have at least a first fitting member which is fixed to the seat pan, a second fitting member, which is pivotable coupled to the first fitting member and which is fixed to the back-rest, a recliner heart and an adjustment member.

First claim

What is claimed is:

1. A back-rest pivot fitting for a vehicle seat, the pivot fitting, comprising:
a first fitting member which is mountable to a seat pan,
a second fitting member which is pivotable coupled to the first fitting member and which is mountable to a back-rest, wherein the second fitting member is relatively adjustable with respect to the first fitting member,
a recliner heart,
an adjustment member which is rotatable coupled to the first and second fitting members, and
a drive unit which is fixedly mounted to the first fitting member and configured to drive the adjustment member,

wherein the recliner heart, when actuated, is configured to allow an unimpeded motion of the second fitting member relative to the first fitting member from an upright use position to a non-use position of the back-rest, and the adjustment member, when actuated, is configured to interact with the drive unit such that, when the drive unit is actuated, the second fitting member is moved from the non-use position to the upright use position,
wherein the recliner heart comprises at least one free swing gate which is configured to allow the unimpeded motion of the second fitting member relative to the first fitting member when the recliner heart is in a released state.

2. The back-rest pivot fitting according to claim 1 , wherein the drive unit comprises a drivable pinion which is coupled to a toothed segment of the adjustment member.

3. The back-rest pivot fitting according to claim 1 , wherein the recliner heart comprises a fixed segment fixed to the first fitting member and a rotatable segment which is fixed to the second fitting member, wherein in a locked state of the recliner heart, the segments are in locked engagement.

4. The back-rest pivot fitting according to claim 3 , wherein actuation of the recliner heart initiates disengagement of the rotatable segment from the fixed segment via intermediate segments provided between the fixed segment and the rotatable segment.

5. The back-rest pivot fitting according to claim 4 , wherein the intermediate segments each comprises a segment portion and a toothed portion, wherein in a locked state of the recliner heart a respective segment portion is located in a notch of the free swing gate and allows the respective toothed portion to engage the rotatable segment and in a released state the respective segment portion is located on a surface of a guiding recess of the free swing gate such that the respective toothed portion is held disengaged from the rotatable segment.

6. The back-rest pivot fitting according to claim 1 , wherein, when the back-rest is positioned in the upright use position and the pivot fitting is in a locked state, the adjustment member is positioned in an initial position.

7. The back-rest pivot fitting according to claim 6 , wherein upon releasing the second fitting member to be pivoted from the upright use position to the non-use position, the adjustment member is configured to remain in the initial position, wherein when actuating the drive unit the adjustment member is configured to be driven from the initial position to a second position to actively adjust the second fitting member from the non-use position to the upright use position.

8. The back-rest pivot fitting according to claim 1 , wherein the second fitting member comprises a lift bracket to be contacted by the adjustment member when adjusting the second fitting member from the non-use position to the upright use position.

9. The back-rest pivot fitting according to claim 8 , wherein the lift bracket is arranged on a rear side of the second fitting member.

10. The back-rest pivot fitting according to claim 9 , wherein the adjustment member comprises a stop element which, when the drive unit is actuated, comes in contact with the lift bracket to push the second fitting member from the non-use position to the upright use position.

11. The back-rest pivot fitting according to claim 6 , wherein, when the second fitting member is moved and locked in the upright use position, the drive unit is configured to drive the adjustment member back to the initial position.

12. A seat for a vehicle, comprising:
the seat pan,
the folding back-rest which is pivotable coupled to the seat pan,
the pivot fitting for adjusting a pivoting of the back-rest relative to the seat pan between at least the upright use position and at least the non-use position, and
the back-rest pivot fitting for adjusting a pivoting of the back-rest relative to the seat pan between at least an upright use position and at least a non-use position according to claim 1 .

Assignees

• Adient Us Llc

Inventors

• Hiemstra Bruce A
• Leighton Michael J
• Poulos Yannis
• Eblenkamp Diana
• Petrovic Miodrag M
• Jähner Falko
• Devadkar Sandeep

Classifications

• B60N2/0232 Primary

  Operations & Transport · mapped topic

• B60N2002/0236

  Operations & Transport · mapped topic

• B60N2/366 Primary

  characterised by the locking device · CPC title

• B60N2/02246 Primary

  Electric motors therefor · CPC title

• B60N2/236

  linearly movable · CPC title