PROBLEM TO BE SOLVED: To provide a planetary differential type motion conversion mechanism which can smoothly operate.SOLUTION: A planetary differential type motion conversion mechanism includes: (a) a cylinder body 54 in which an inner screw is formed in a screw region R0 at an internal peripheral face, and gear teeth are formed in a first gear region R1 and a second gear region R2 which sandwich the screw region in an axial line direction; (b) a shaft body 48 which is arranged in the cylinder body coaxially with the cylinder body, and in which gear teeth and an outer screw are formed at an external peripheral face; and (c) a plurality of planetary rollers 86 which are arranged between the shaft body and the cylinder body, and revolve and rotate, and in which gear teeth and outer screws are formed at external peripheral faces. A part (86a) of a plurality of the planetary rollers is engaged with the gear teeth formed in the first gear region, and not engaged with the gear teeth formed in the second gear region, and the remaining (86b) of a plurality of the planetary rollers is engaged with the gear teeth formed in the second gear region, and not engaged with the gear teeth formed in the first gear region.SELECTED DRAWING: Figure 3
【課題】 円滑に作動可能な遊星差動式の動作変換機構を提供する。【解決手段】 (a) 内周において、ねじ領域R0に内ねじが形成され、そのねじ領域を軸線方向に挟む第1ギヤ領域R1と第2ギヤ領域R2とにギヤ歯が形成された筒体54と、(b) その筒体の内部にその筒体と同軸的に配設され、外周にギヤ歯と外ねじとが形成された軸体48と、(c) 軸体と筒体との間に配設されて公転するとともに自転し、外周にギヤ歯と外ねじとが形成された複数の遊星ローラ86と、を含んで構成された遊星差動式の動作変換機構において、複数の遊星ローラの一部(86a)を、第1ギヤ領域に形成されたギヤ歯と噛合するが、第2ギヤ領域に形成されたギヤ歯とは噛合しないようにし、複数の遊星ローラの残り(86b)を、第2ギヤ領域に形成されたギヤ歯と噛合するが、第1ギヤ領域に形成されたギヤ歯とは噛合しないようにする。【選択図】 図3
MOTION CONVERSION MECHANISM AND ELECTRIC BRAKE ACTUATOR USING THE SAME
動作変換機構およびそれを用いた電動ブレーキアクチュエータ
2018-05-24
Patent
Elektronische Ressource
Japanisch
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