Reclining mechanism for aircraft passenger seat

• US 9,731,830 B2
• Filed: 07/30/2014
• Issued: 08/15/2017
• Est. Priority Date: 03/14/2014
• Status: Active Grant

• Current Assignee: JAMCO Corporation
• Original Assignee: JAMCO Corporation
• Inventors: Ozaki, Masaji, Tagami, Nozomu, Ootake, Sanae
• Primary Examiner(s): BARFIELD, ANTHONY DERRELL
• Application Number:
  US15/122,491
• Publication Number:
  US 20170073076A1
• Time in Patent Office: 1,112 Days
• Field of Search: 297 61, 29735413
• CPC Class Codes: B64D 11/064 Adjustable inclination or position of seats
• CPC Class Codes: B64D 11/0642 Adjustable headrests

Abstract

Provided is an improved reclining mechanism for an aircraft passenger seat. An aircraft passenger seat (100) is provided with a seat bottom frame (152) which constitutes a seat surface, and a seat back frame (162) which constitutes a back rest, wherein cam followers (240, 242) provided on both sides of the seat back frame (162) slide within cam grooves (132) on spreaders (130) supporting both sides of a seat mechanism. When an actuator (200) expands and pivots a link arm (230) in the direction of an arrow R1 to cause the seat back frame (162) to start reclining, a link plate (270) extends in the direction of an arrow F1, and pivots a head rest frame (172) in the θ direction. This operation prevents the line of sight of the passenger from being deviated from a video device provided on a back of a front seat.

Claims

1. A reclining mechanism for an aircraft passenger seat comprising:

a pair of spreaders as a frame body fixed to a floor surface of an aircraft and supporting both side portions of a structural member of a seat;

a seat back frame comprising link arms provided on both side portions of the seat back frame, the link arms comprising two cam followers mounted on each link arm and engaged with a cam groove formed on each of the spreaders, the seat back frame constituting a back rest;

a head rest frame mounted pivotably on an upper end portion of the seat back frame;

a link plate operating the head rest frame mounted on both sides of the seat back frame;

a seat bottom frame constituting a seat surface;

an eccentric cam supporting a lower surface of the seat bottom frame;

a linear-motion-type actuator arranged on a lower side of the seat bottom frame; and

a mechanism connecting a rod of the actuator and the link arms,

wherein in a case where the link arms pivot forward along with the expansion of the rod of the actuator, the seat back frame starts reclining, and the link plates mounted on both sides of the seat back frame pivot an upper end of the head rest frame frontward.

3. The reclining mechanism for an aircraft passenger seat according to claim 1, wherein the eccentric cam pivots together with the reclining of the seat back and moves a front end of the seat bottom frame downward.

2. A reclining mechanism for an aircraft passenger seat comprising:

a spreader as a frame body fixed to a floor surface of an aircraft and supporting both side portions of a structural member of a seat;

a lower seat back frame comprising link arms provided on both side portions of the lower seat back frame, the link arms comprising two cam followers mounted on each link arm and engaged with a cam groove formed on the spreader;

an upper seat back frame mounted pivotably on an upper end portion of the lower seat back frame;

a link plate operating the upper seat back frame mounted on both sides of the lower seat back frame;

a seat bottom frame constituting a seat surface;

an eccentric cam supporting a lower surface of the seat bottom frame;

a linear-motion-type actuator arranged on a lower side of the seat bottom frame; and

a mechanism connecting a rod of the actuator and the link arm,

wherein in a case where the link arm pivots forward along with the expansion of the rod of the actuator, the seat back frame starts reclining, and the link plates mounted on both sides of the lower seat back frame pivot an upper end of the upper seat back frame frontward.

4. The reclining mechanism for an aircraft passenger seat according to claim 2, wherein the eccentric cam pivots together with the reclining of the seat back and moves a front end of the seat bottom frame downward.