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    GEAR AND MANUFACTURING METHOD THEREFOR
    3.
    发明公开
    GEAR AND MANUFACTURING METHOD THEREFOR 审中-公开

    公开(公告)号：EP4261437A1

    公开(公告)日：2023-10-18

    申请号：EP20965098.5

    申请日：2020-12-10

    申请人： Public Interest Incorporated Association Research Institute For Applied Sciences ,  Neturen Co., Ltd.

    发明人： KUBO Aizoh ,  MATSUOKA Hiroaki

    IPC分类号： F16H55/06

    摘要： In order to prevent a spalling failure of a tooth flank (10Y) at a middle point of a tooth height and a dedendum (10Z) caused by Trochoidal interference due to meshing during operation of a gear transmission, in a gear manufacturing process, a manufacturing method is adopted in which a tooth tip edge part is softened more than the tooth flank at the middle point of the tooth height and the dedendum by performing a tempering or annealing treatment on the tooth tip edge part (10X), more preferably by a local tempering or annealing treatment. As a result, it is possible to dramatically improve ease of manufacturing control, quality control, and safety control of a gear while preventing breakage of the gear.

    ROTATION DRIVE DEVICE
    8.
    发明公开
    ROTATION DRIVE DEVICE 审中-公开

    公开(公告)号：EP3828443A1

    公开(公告)日：2021-06-02

    申请号：EP20204448.3

    申请日：2020-10-28

    申请人： Tsudakoma Kogyo Kabushiki Kaisha

    发明人： NITTA, Tetsuya ,  ISHIZAKI, Junichiro

    IPC分类号： F16H55/06

    摘要： Provided is a rotation drive device (1), which has a driving-force transmission mechanism (7) configured such that a drive transmission member (9) provided on a driving shaft (8) and a disk-shaped driven member (10) attached to a main shaft (4) are directly or indirectly engaged with each other and which is further configured such that an increase in diameter of the driven member (10) due to thermal expansion can be suppressed as much as possible. The driven member (10) includes an inner ring (11) attached to the main shaft (4), and an outer ring (12) attached to the inner ring (11) by shrinkage fit and having an engaging groove (13) formed to be opened on an outer circumferential surface (10b) thereof. The inner ring (11) is formed by a low thermal expansion member, which is an alloy having a thermal expansion coefficient of 5×10 -6 /K or less. The outer ring (12) is formed of a hardenable iron-based material.

    DECELERATION MECHANISM AND MOTOR HAVING DECELERATION MECHANISM INSTALLED THEREIN
    10.
    发明公开
    DECELERATION MECHANISM AND MOTOR HAVING DECELERATION MECHANISM INSTALLED THEREIN 审中-公开

    公开(公告)号：EP3779240A1

    公开(公告)日：2021-02-17

    申请号：EP19782225.7

    申请日：2019-04-03

    申请人： Mitsuba Corporation

    发明人： KOJIMA, Naoki ,  KOBAYASHI, Motoaki ,  TOKIZAKI, Teppei ,  KAWASHIMA, Yoshichika

    IPC分类号： F16H55/08 ,  F16H1/08 ,  H02K7/116 ,  F16H55/06

    摘要： According to the present invention, one engagement protrusion part 31c having a spiral shape is provided in a pinion gear 31, a plurality of engagement recess parts 32d engaged with the engagement protrusion part 31c are provided in a helical gear 32, and the engagement protrusion part 31c and the engagement recess parts 32d are each formed to have an arc shape in a direction perpendicular to the axial direction of the pinion gear 31. As a result, the pinion gear 31 and the helical gear 32 can be configured in an arc-shaped protrusion/recess engagement structure that does not deteriorate the state of engagement therebetween. Also, by increasing the number of teeth on the helical gear 32 while keeping the number of teeth on the pinion gear 31 at one tooth, the difference in the number of teeth can be easily increased. Therefore, the deceleration ratio of a deceleration mechanism 30 can be increased without increasing the volume thereof.