公开(公告)号：US09677649B2

公开(公告)日：2017-06-13

申请号：US15023094

申请日：2014-09-16

申请人： NTN CORPORATION

发明人： Satoshi Kitano ,  Tadahisa Tanaka ,  Eiji Maeno

IPC分类号： F16H7/22 ,  F16H7/08 ,  F16H7/12

CPC分类号： F16H7/1236 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0893

摘要： A hydraulic auto-tensioner includes a plunger fitted to a bottom end portion of a rod so as to be slidable along a radially inner surface of a valve sleeve and a radially outer surface of the rod. The plunger has a bottom plate formed with a valve hole. A first leakage gap is defined between sliding surfaces of the plunger and the valve sleeve, and a second leakage gap of which the flow resistance is lower is defined between sliding surfaces of the plunger and the rod such that while the engine is running normally, oil in a pressure chamber leaks into a reservoir chamber through the second leakage gap, and when starting the engine by actuating a starter/generator, the plunger rises until the valve hole is closed so that oil in the pressure chamber leaks into the reservoir chamber through the first leakage gap.

公开(公告)号：US11486458B2

公开(公告)日：2022-11-01

申请号：US16962945

申请日：2019-01-29

申请人： NTN Corporation

发明人： Kengo Watanabe ,  Eiji Maeno ,  Yasumasa Hibi

IPC分类号： B60N2/16 ,  F16D41/08 ,  F16D67/02 ,  F16D15/00 ,  F16D63/00

摘要： A brake-side clutch part includes an outer ring whose rotation is restricted and an output shaft from which rotation is output. The outer ring is provided with a slide gear that meshes with the output shaft when rotational torque is cut off and releases a meshing state with the output shaft when rotational torque is transmitted. The output shaft is provided with an inner gear that meshes with the slide gear so as to be slightly rotatable. An alignment part that aligns a phase of the inner gear with that of the slide gear when rotational torque is cut off, and a centering part that returns the inner gear to a neutral position with respect to the output shaft when rotational torque is transmitted are provided between the inner gear and the output shaft.

公开(公告)号：US11231091B2

公开(公告)日：2022-01-25

申请号：US16477244

申请日：2018-01-11

申请人： NTN CORPORATION

发明人： Kouichi Onimaru ,  Eiji Maeno

IPC分类号： F16H7/08

摘要： A chain tensioner is formed with internal threads each including a push-in-side flank, a protruding-side flank, and a thread top face. The push-in-side flank has a flank angle which is larger than a flank angle of the protruding-side flank. The push-in-side flank and the protruding-side flank are rolled surfaces formed by rolling, and have a surface roughness smaller than Ra 1.0 μm. Each internal thread further includes, at a position at which the protruding-side flank intersects with the thread top face, a chamfer configured to receive a bulge resulting from excess materials pushed out from the protruding-side flank during formation of the internal thread by rolling.