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公开(公告)号：US12116084B2
公开(公告)日：2024-10-15
申请号：US17913332
申请日：2021-05-26
发明人： Hirofumi Okabe , Masakuni Yoshida , Yuto Hoki
CPC分类号： B62M9/02 , D02G3/02 , D02G3/28 , D02G3/447 , F16G1/10 , F16G1/28 , D10B2101/12 , D10B2505/02 , D10B2505/12
摘要： A toothed belt power-transmission apparatus includes: a toothed belt which includes a cord and a plurality of belt tooth portions; and a plurality of toothed pulleys which include a plurality of pulley tooth portions. The cord includes a carbon fiber cord formed by combining and secondarily twisting a plurality of primary twisted yarns including a carbon fiber. A twisting direction of a primary twist of the primary twisted yarns is the same as a twisting direction of the secondary twist. A primary twisting coefficient of the primary twist is 0.62 to 1.30. A secondary twisting coefficient of the secondary twist is 2.06 to 3.95. A tooth pitch of the toothed belt is within a range of −0.4% to +0.1% relative to a tooth pitch of the toothed pulley around which the toothed belt is wound.
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公开(公告)号：US20230128744A1
公开(公告)日：2023-04-27
申请号：US17913332
申请日：2021-05-26
发明人： Hirofumi Okabe , Masakuni Yoshida , Yuto Hoki
摘要： A toothed belt power-transmission apparatus includes: a toothed belt which includes a cord and a plurality of belt tooth portions; and a plurality of toothed pulleys which include a plurality of pulley tooth portions. The cord includes a carbon fiber cord formed by combining and secondarily twisting a plurality of primary twisted yarns including a carbon fiber. A twisting direction of a primary twist of the primary twisted yarns is the same as a twisting direction of the secondary twist. A primary twisting coefficient of the primary twist is 0.62 to 1.30. A secondary twisting coefficient of the secondary twist is 2.06 to 3.95. A tooth pitch of the toothed belt is within a range of −0.4% to +0.1% relative to a tooth pitch of the toothed pulley around which the toothed belt is wound.
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