Seat slide device for vehicle
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United States of America Patent
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Dec 13, 2016
Grant Date -
Nov 12, 2015
app pub date -
Dec 27, 2013
filing date -
Dec 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a seat slide device for a vehicle capable of enhancing the degree of design freedom in an interior height of a vehicle cabin, light-weighting the vehicle, and enhancing comfort in use when a seat is moved forward and rearward. The seat slide device for a vehicle includes: an upper rail made of an aluminum alloy, including a sliding section having a plurality of ball rolling grooves each formed along a longitudinal direction of the upper rail; a lower rail made of an aluminum alloy, including: a guide groove for receiving the sliding section of the upper rail; and ball rolling grooves each formed in the guide groove along a longitudinal direction of the lower rail to be opposed to the plurality of ball rolling grooves of the sliding section; and a large number of guide balls each made of a synthetic resin, for supporting movement of the upper rail relative to the lower rail, the large number of guide balls being arrayed in line without using a cage in a portion between each of the plurality of ball rolling grooves and each of the ball rolling grooves.
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