PROBLEM TO BE SOLVED: To reduce the number of component elements of a linear motion mechanism to simplify their assembly works and make a compact axial length.SOLUTION: Both ends of a roller shaft 47 for supporting several planetary rollers 49 between an outer diameter surface of a rotating shaft 34 and an inner diameter surface of an outer ring member 21 are supported between a pair of opposing disks 41a, 41b of a rotatably supported carrier 40 by roller shaft supporting parts 46a, 46b formed at a disk. Planetary rollers are auto-rotated and revolved through frictional contact with the rotating shaft by rotation of the rotating shaft, and the outer ring member is linearly moved in an axial direction through engagement between a peripheral groove 54 formed at the outer diameter surface of the planetary roller 49 and a spiral protrusion 53 arranged at the inner diameter surface of the outer ring member. A roller shaft supporting part 46a formed at a disc 41a placed at inner side of the carrier is defined as a non-opened taper hole. A raceway surface 60 is formed at an inner side surface of the inner disc, and a thrust bearing 56 is assembled between the opposing parts between the raceway surface and the shaft supporting member 35 to support the carrier in rotatable manner.SELECTED DRAWING: Figure 2

    【課題】直動機構の部品点数を低減して組立ての容易化と軸方向長さのコンパクト化を図る。【解決手段】回転自在に支持されたキャリア40の対向一対のディスク41a、41b間において、回転軸34の外径面と外輪部材21の内径面間の複数の遊星ローラ49を支持するローラ軸47の両端部を、ディスクに形成されたローラ軸支持部46a、46bで支持する。回転軸の回転により、回転軸との摩擦接触により遊星ローラを自転および公転させ、遊星ローラ49の外径面に形成された円周溝54と外輪部材の内径面に設けられた螺旋突条53の噛合によって外輪部材を軸方向に直線移動させる。キャリアのインナ側のディスク41aに形成されたローラ軸支持部46aを不貫通状のテーパ孔とする。インナ側のディスクのインナ側の側面に軌道面60を形成し、軌道面と軸支持部材35の対向部間にスラスト軸受56を組み込んでキャリアを回転自在に支持する。【選択図】図2


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    Title :

    PLANETARY ROLLER SCREW TYPE LINEAR MOTION MECHANISM AND ELECTRICALLY-DRIVEN BRAKE CONTROL SYSTEM


    Additional title:

    遊星ローラねじ式直動機構および電動ブレーキ装置


    Contributors:

    Publication date :

    2017-09-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16C SHAFTS , Wellen / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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