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GEAR WITH CORNU'S SPIRAL TOOTH PROFILE NEW 新技術説明会

外国特許コード F190009879
整理番号 1702
掲載日 2019年8月20日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2006JP307786
国際公開番号 WO2006109838
国際出願日 平成18年4月6日(2006.4.6)
国際公開日 平成18年10月19日(2006.10.19)
優先権データ
  • 特願2005-139033 (2005.4.8) JP
発明の名称 (英語) GEAR WITH CORNU'S SPIRAL TOOTH PROFILE NEW 新技術説明会
発明の概要(英語) A gear with a Cornu's spiral tooth profile, wherein a Cornu's spiral is used in the tooth profile thereof. The Cornu's spiral may be two-dimensionally deformed at a specified rate according to the application of the gear. Since the Cornu's spiral comprises a similarity, when a pressure angle is determined, the tooth profile can be standardized by module and can provide high usability. The application of the gear can be further increased by replacing the portions of the addendum and the dedendum of the gear with other curves such as circular arcs. The engagement of the gear is always performed by the surface contact of a projected surface on a recessed surface. Accordingly, since a contact surface pressure is low and the radius of curvature of the dedendum is large, the bending stress of the teeth of the gear is low and the fatigue strength thereof is also high. Even if the number of teeth is low, undercut does not occur in the teeth of the gear. Since the gear can be smoothly engaged without backlash, it can be suitably used for apparatuses for which accurate positioning is requested.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • MIYAOKU, Tsutomu
  • KANEHIRO, Jiro
  • SASAKI, Hidekazu
  • 発明者(英語)
  • MIYAOKU, Tsutomu
  • KANEHIRO, Jiro
  • SASAKI, Hidekazu
国際特許分類(IPC)
参考情報 (研究プロジェクト等) Hiroshima Prefectural Technology Research Institute

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