公开(公告)号：US20170370397A1

公开(公告)日：2017-12-28

申请号：US15617084

申请日：2017-06-08

Applicant: KUBOTA Corporation

Inventor： Hiroki OSO ,  Naoya SAKURAI ,  Takumi FUKUDA ,  Mitsugu OKUDA ,  Wataru IWANAGA ,  Yusuke SUZUKI ,  Takahiro KAJIHARA

IPC: F16B39/12 ,  F16B39/08

CPC classification number: F16B39/12 ,  F16B21/183 ,  F16B37/14 ,  F16B39/08 ,  F16B41/005

Abstract: A device with an adjustment bolt includes a bolt attachment wall, an adjustment bolt screwed with an internal thread hole of the bolt attachment wall, a locknut screwed with the adjustment bolt, a cover that surrounds the adjustment bolt and the locknut, and a stopper unit that prevents removal of the cover from the locknut. The stopper unit includes an inner circumference groove of the cover fitted around a C-shaped retaining ring, and an external circumference groove of the locknut fitting within the retaining ring. The external circumference groove includes a first groove portion having a large-diameter groove bottom that restricts contraction and removal of the retaining ring fitted within the inner circumference groove, and a second groove portion provided continuously for the first groove portion and having a small-diameter groove bottom that allows contraction and removal of the retaining ring fitted within the inner circumference groove.