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    • 42. 发明专利
    • BACKLASH SHOCK PREVENTING DEVICE FOR GEAR REDUCER
    • JPH01145469A
    • 1989-06-07
    • JP30426987
    • 1987-11-30
    • AISIN SEIKI
    • HASHIMOTO AKIONAITO HIROSHI
    • F16H57/12F16H1/00F16H55/18
    • PURPOSE:To prevent shock imposed on a gear due to backlash at the time of transmission of forces by fixing at least one pair of rings which are contact with each other and whose ratio of radiuses is equal to a gear ratio of at least one pair of gears co-axially to at least one pair of gears respectively. CONSTITUTION:Each ring 36, 39 is fixed to the head of an electric motor 24 and the side end portion of an input shaft 10 respectively so that their outer peripheries are opposed to those of each ring 35, 37 to the outer peripheries of which elastic members 38, 40 are locked. Each pair of rings 35, 39 and 36, 37 are brought into contact with pressure with each other on their outer peripheries. In the initial stage where backlashes of each gear are cut down before the contact of tooth faces begins, the transmission of forces from the motor 24 is performed through the rings 36, 37, 35, 39 by frictional forces between each ring through each elastic members 38, 40, and a main gear 21 begins to rotate without the contact between teeth. Since the contact between the tooth faces begins after a certain rotating speed is reached, the relative speed immediately before the contact between teeth is small.
    • 45. 发明专利
    • REDUCTION GEAR WITH TORQUE LIMITER
    • JPS63259248A
    • 1988-10-26
    • JP9261887
    • 1987-04-15
    • TSUOISU KK
    • NADAYAMA YUKIO
    • F16D7/02F16H1/00F16H1/32
    • PURPOSE:To simplify the structure to decrease the number of parts, and to reduce the size and cost by providing a reduction gear where a sun gear capable of rotating in a body with a housing is meshed with a planetary gear and forming a torque limiter by a spring integral with a case. CONSTITUTION:A reduction gear 12 is formed by a sun gear 26 of a cycloidal tooth, which is integral with the left half 24b of a housing 24, an eccentric body 32 having a planetary gear 36 meshed with the sun gear integral with the outer edge thereof and an eccentric shaft 34. On the other hand, a spring body 18 is integral with a case 16, and the housing 24 of the reduction gear 12 is pressed and assembled to a mounting flange 20 by the biasing force of the spring to form a torque limiter 14. Accordingly, the reduction gear and the torque limiter can be reduced in size, the structure can be simplified to decrease the number of parts and facilitate assembling and reduce the cost.
    • 49. 发明专利
    • TERMINAL DECELERATING DEVICE FOR MOTOR-BICYCLE AND MOTOR-TRICYCLE
    • JPS63140144A
    • 1988-06-11
    • JP28536786
    • 1986-11-28
    • YAMAHA MOTOR CO LTD
    • KUBO TORU
    • F16H1/00B62M11/06
    • PURPOSE:To lessen the unbalanced wear of the shaft-support portions of a rear-wheel shaft and a deceleration-case by forming a projecting part at one side of the opposing portions of a secondary shaft and a rear-wheel shaft and a recessed part at the other side and putting together rotatably the recessed and projecting parts. CONSTITUTION:A projecting support-shaft 33 is formed in one body on the secondary shaft 17 side of the opposing portions of a secondary shaft 17 and a rear-wheel shaft 31. Also, a recessed support-hole 34 is formed on the rear- wheel shaft 31 side. The support portion 33 is inserted in a free state into the support-hole 34, and ball bearings 35 are provided at the space between the inner perimeter surface of the support-hole 34 and the outer perimeter surface of the support-shaft 33. By this, the inside-end portion of the rear-wheel shaft 31 is rotatably insert-supported by by the secondary shaft 17. The unbalanced wear of the shaft-support portions of the rear-wheel shaft and deceleration-case may be lessened by this constitution.