GEAR SPEED REDUCER

• Main Author: TSUJIMOTO KATSUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 25.10.2018
• Subjects: BLASTING; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a speed reducer capable of improving transmission efficiency by reducing backlash of a tooth portion of an internal tooth type output gear and a tooth portion of an external tooth type input gear without degrading effectiveness of a spring.SOLUTION: An internal tooth portion 25A of an internal tooth-type output gear 25 coaxial with a rotation shaft core X and an external tooth portion 30A of an input gear 30 coaxial with an eccentric shaft core Y are partially engaged, and an eccentric member 26 provided with an eccentric bearing face 26E supporting the input gear 30 rotatably on the eccentric shaft core Y, is disposed. An energization member 27 for applying energization force to engage the external tooth portion 30A of the input gear 30 with the internal tooth portion 25A of the output gear 25 is composed of a flat spring material in which an angle from an action point P in which the energization force is acted to a supporting portion PB, is over 90 degrees on the eccentric shaft core Y as a center.SELECTED DRAWING: Figure 2 【課題】バネの有効性を損なうことなく内歯型の出力ギヤの歯部と、外歯型の入力ギヤの歯部とのバックラッシュを小さくし、伝動効率の上昇が可能な減速装置を構成する。【解決手段】回転軸芯Ｘと同軸芯の内歯型の出力ギヤ２５の内歯部２５Ａと、偏心軸芯Ｙと同軸芯の入力ギヤ３０の外歯部３０Ａとの一部を咬合させ、偏心軸芯Ｙを中心に入力ギヤ３０を回転自在に支持する偏心軸受面２６Ｅが形成された偏心部材２６を備えている。入力ギヤ３０の外歯部３０Ａを出力ギヤ２５の内歯部２５Ａに咬合させる付勢力を作用させる付勢部材２７を、付勢力を作用させる作用点ＰＡから、支持点ＰＢに亘る角度が偏心軸芯Ｙを中心に９０度を超える板状バネ材で構成した。【選択図】図２