Virtual limit correction device of power seat for vehicle, and correction method therefor

• US 10,442,317 B2
• Filed: 12/22/2015
• Issued: 10/15/2019
• Est. Priority Date: 12/31/2014
• Status: Active Grant

• Current Assignee: Hyundai Dymos Inc. (Hyundai Mobis Co., Ltd.)
• Original Assignee: Hyundai Dymos Inc. (Hyundai Mobis Co., Ltd.)
• Inventors: Koh, Sang Kyung, Shin, Jong In, Lee, Sang June
• Primary Examiner(s): Weber, Tamara L
• Application Number:
  US15/518,225
• Publication Number:
  US 20170305304A1
• Time in Patent Office: 1,393 Days
• Field of Search: None
• CPC Class Codes: B60N 2/02253 characterised by the transmission between the electric motor and the seat or seat parts
• CPC Class Codes: B60N 2/0248 with memory of positions
• CPC Class Codes: B60N 2/0252 with relations between different adjustments, e.g. height of headrest following longitudinal position of seat

Abstract

The present invention prevents the virtual limit setting information from being initialized by expanding the position of the virtual limit to a wider range than the conventional one when the hard stop situation occurs in the before/after section of the virtual limit. For the purpose, the present invention provides a virtual limit correction device of power seat for vehicle comprising a switch for seat operation; and a seat operation control unit for correcting the virtual limit position by moving the end position of the track by using the track end position and the compensation position as compensation regions if a hard stop situation occurs in the front/rear direction based on the initially set virtual limit point during the movement of the power seat according to the switch operation.

Claims

1. A virtual limit correction device of a power seat comprising:

a switch for driving the seat; and

a controller for extending a virtual limit position by moving an end position of a track by using the track end position and a compensation position as compensation regions if a hard stop situation occurs in a front/rear direction based on an initially set virtual limit point during movement of the power seat according to the switch operation,

wherein when a hard stop occurrence position is within a virtual limit section, a position information of the track end is moved to an initially set virtual limit position to be corrected, and

when the hard stop occurrence position is outside the virtual limit section, the position information of the track end is moved to a position where the hard stop occurs to correct the position information of the track end.

2. The virtual limit correction device of claim 1, wherein the virtual limit position moves together with the position information of the track end.

3. A correction method of a virtual limit of a power seat for a vehicle comprising:

detecting hard stop occurrence during a power seat movement; and

extending the virtual limit by moving an end position of a track by using regions between a track end position and a compensation position as compensation regions,

if the hard stop is within a virtual limit operation section, the end position of the track is moved to an initially set virtual limit position to be corrected, and if the hard stop is outside the virtual limit operation section, the end position of the track is shifted to a position where the hard stop occurs to correct the end position.

4. The correction method of claim 3, further comprising:

saving a setting information on the corrected virtual limit position.