Reduction of the Roll-Over of the Sector Tooth for Achieving Improved Recliner Locking Performance

리클라이너 결합 성능 향상을 위한 섹터투스의 롤오버 저감 방법

  • Received : 2010.05.11
  • Accepted : 2010.08.30
  • Published : 2010.11.01


In this study, effective forming methods for reducing the roll-over of a sector tooth, which is a main component of an automotive seat recliner, are proposed. Due to the large amount of roll-over, accurate contact between the inner gear of a sector tooth and the outer gear of a pawl tooth cannot be normally achieved; thus sensitivity and safety for the passengers decrease. To overcome the aforementioned drawback, we investigated the effect of flowcontrol forming methods involving local embossing die, coining punch, and VIC (Variable Inverse Clearance) on the roll-over depth by FE-analysis and an experiment. The results of a fine-blanking experiment for verifying the proposed methods showed that VIC type is decidedly superior from the aspects of reduction of roll-over and tool strength of the sector tooth.


Recliner;Variable Inverse Clearance;Roll-Over;Sector Tooth;Locking Part


Supported by : 부산대학교


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