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公开(公告)号：US20190048993A1
公开(公告)日：2019-02-14
申请号：US16079048
申请日：2017-02-10
发明人： Hiroyuki AKIYAMA , Yasuo YOSHII , Yuji KONISHI , Kazuo YAMAGUCHI , Kazuo IRITANI
摘要： Provided is a speed-switchable reduction gear including: an input shaft; an output shaft; a plurality of output-side geared-wheels mounted on the output shaft; a shifter for selecting the output-side geared-wheel to be used; a shifter-side first bearing and a non-shifter-side second bearing provided to each the output-side geared-wheel; and a plurality of dividing walls each provided in each cell between the first and second bearings. The output shaft has an axial lubricating-oil flow path and a plurality of supply flow paths. Each dividing wall divides each cell into a first cell adjacent to the first bearing and a second cell adjacent to the second bearing and allows lubricating oil to be supplied from the supply flow paths into the first and second cells so as to make pressure of lubricating oil in the first cell higher than that in the second cell.
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公开(公告)号：US20190383362A1
公开(公告)日：2019-12-19
申请号：US16489616
申请日：2018-02-09
发明人： Hiroyuki AKIYAMA , Yasuo YOSHII , Yuji KONISHI , Kazuo YAMAGUCHI , Kazuo IRITANI
摘要： A speed reducer capable of reliably reducing and changing speed while suppressing heat generation and abrasion includes: a plurality of gears rotatably supported on an output shaft; a shifter engageable with an engagement gear selected from the plurality of gears to couple the engagement gear to the output shaft; and a plurality of bushes disposed in an annular groove formed in the shifter to move the shifter to the engagement gear and thereby engage the shifter with the engagement gear; and a bush support supporting the plurality of bushes so as to allow them to swing individually.
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