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VEHICLE SEAT LIFTER DEVICE

  • US 20170088018A1
  • Filed: 08/24/2016
  • Published: 03/30/2017
  • Est. Priority Date: 09/30/2015
  • Status: Active Grant
First Claim
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1. A vehicle seat lifter device comprising:

  • a pinion gear which meshes with an input gear of a link mechanism which causes a seat to undergo lifting and lowering operations; and

    a rotational control device which controls rotation of the pinion gear,wherein the rotational control device includesa rotating shaft which rotates in synchronization with the pinion gear,a rotation restriction mechanism including a first meshing member which rotates with the rotating shaft and a second meshing member which restricts rotation of the rotating shaft by meshing with the first meshing member,an input member which is linked to an operation handle to rotate around the rotating shaft,a release mechanism which releases the meshing of the first and second meshing members through rotation of the input member from a neutral position, anda braking mechanism which applies a braking force to the rotating shaft,wherein the braking mechanism is provided with a spring member in which a spring main body is fitted to the rotating shaft in a state of being in contact with an outer circumference of the rotating shaft based on an elastic force, and first and second spring end portions are disposed on an outside in a radial direction of the rotating shaft, where relative positions of the first and second spring end portions change and the spring main body warps in a diameter expanding direction due to the spring member rotating in a rotational direction of the rotating shaft, andwherein the braking mechanism is configured such that, when the meshing of the first and second meshing members is released based on an operation of the release mechanism, relative positional variation of the first and second spring end portions which causes the spring main body to warp in the diameter expanding direction is restricted.

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