The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2024
Filed:
Jan. 29, 2022
Unipres Corporation, Yokohqma, JP;
Akimasa Mori, Fuji, JP;
Hiroaki Ono, Fuji, JP;
UNIPRES CORPORATION, Kanagawa, JP;
Abstract
Two-speed transmission apparatus for electric vehicle comprises a planetary gear mechanism, friction brakeand friction clutchin coaxial arrangement between input axisand output axis, first speed is obtained by fastening the friction brakeand one-on-one second speed is obtained by fastening friction clutch. The electric actuatorto switch first speed and second speed comprises electric motor, a torque-thrust converting mechanismand pusher. The torque-thrust converting mechanismcomprises inside cylindrical screwbeing rotated by control motorand outside cylindrical nutwhich is screwed with cylindrical screwand is connected to pusherso as to integrally axis-move. The control motormay include an electromagnetic brake to fasten the friction brakeand the friction clutch. Thrust of the axial direction may be transmitted by the swing of an arm