Power seat device

Patent metadata

Field	Value
Publication number	US-10933770-B2
Application number	US-201916577904-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Nov 15, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A power seat device is configured to acquire a target associated position of a tilted position, corresponding to a current position of a seatback for allowing the seatback to reach an end position in a reclining range, and a seat to reach an end position in a tilting range simultaneously. Outputs of a reclining motor and a tilting motor are adjusted so that the tilted position coincides with the acquired target associated position.

First claim

What is claimed is:

1. A power seat device comprising:
a seat;
a seatback rotatably connected to the seat;
a reclining motor adapted to recline the seatback;
a tilting motor adapted to tilt the seat;
a switch adapted to drive the reclining motor and the tilting motor simultaneously;
a correspondence position acquisition unit adapted to acquire a correspondence position between a reclined position of the seatback and a tilted position of the seat for allowing the seatback to reach an end position in a reclining range and allowing the seat to reach an end position in a tilting range simultaneously; and
an output adjustment unit adapted to adjust at least one of outputs of the reclining motor and the tilting motor to establish the acquired correspondence position.

2. The power seat device according to claim 1 , further comprising:
a reclining sensor adapted to detect a reclined position of the seatback; and
a tilting sensor adapted to detect a tilted position of the seat.

3. The power seat device according to claim 1 , wherein:
the end position in the reclining range of the seatback includes a most forward reclined position, and a most backward reclined position;
the end position in the tilting range of the seat includes a lowest position of a front side of the seat, and a highest position of the front side of the seat; and
the correspondence position acquisition unit is adapted to acquire the correspondence position between the reclined position of the seatback and the tilted position of the seat to establish at least one of a first state in which the seatback reaches the most forward reclined position, and the front side of the seat reaches the lowest position simultaneously, and a second state in which the seatback reaches the most backward reclined position, and the front side of the seat reaches the highest position simultaneously.

4. The power seat device according to claim 1 , wherein:
the correspondence position acquisition unit is adapted to acquire the correspondence position of the tilted seat, corresponding to a current reclined position of the seatback;
the output adjustment unit is adapted to determine whether a current tilted position of the seat precedes the acquired correspondence position;
if it is determined that the tilted position precedes, the output of the tilting motor is lowered; and
if it is determined that the tilted position does not precede, the output of the reclining motor is lowered.

Assignees

• Imasen Electric Ind
• Nhk Spring Co Ltd

Inventors

• Goto Atsutoshi
• Kojima Hiroyuki
• Matsumoto Takanari
• Katsube Kenichi
• Tanaka Daisuke

Classifications

• B60N2/0252 Primary

  with relations between different adjustments, e.g. height of headrest following longitudinal position of seat · CPC title

• B60N2/0277

  characterised by the calculation method or calculation flow chart of sensor data for adjusting the seat · CPC title

• B60N2220/20

  using a deterministic algorithm · CPC title

• B60N2/18 Primary

  the front or the rear portion of the seat being adjustable, e.g. independently of each other · CPC title

• B60N2/10 Primary

  tiltable (B60N2/12 {, B60N2/2875} take precedence) · CPC title