MECHANISM FOR CONVERTING ROTATION INTO LINEAR MOTION, AND ELECTRIC BOOSTER

• Main Authors: NAGATA HIROKI, USUI TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 27.02.2020
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

To provide a mechanism for converting rotation into linear motion, which is made compactly and can obtain a large speed reduction ratio.SOLUTION: A mechanism 6 for a converting rotation into linear motion is configured such that internal teeth 160 are provided on the inner peripheral surface of a nut member 145, external teeth 161 meshing with the internal teeth 160 are provided on the outer peripheral surface of a planetary shaft member 146, an annular support member 164 having an outer peripheral surface with a tooth part 165 meshing with the external teeth 161 is provided, and the annular support member 164 is fixed to a housing 3. Consequently, a large speed reduction ratio can be obtained, and further the mechanism 6 for converting rotation into linear motion can be made compactly.SELECTED DRAWING: Figure 3 【課題】コンパクトに構成しつつ、大きな減速比を得ることができる回転直動変換機構を提供する。【解決手段】回転直動変換機構６は、ナット部材１４５の内周面に、内歯１６０が設けられ、プラネタリシャフト部材１４６の外周面に、内歯１６０に噛み合う外歯１６１が設けられ、該外歯１６１に噛み合う歯部１６５を外周面に有する環状支持部材１６４が備えられ、該環状支持部材１６４はハウジング３に固定される。これにより、大きな減速比を得ることができ、しかも、当該回転直動変換機構６をコンパクトに構成することができる。【選択図】図３