To provide a vehicle seat reclining device which inhibits rattling of a pole and improves assembly without increasing the number of components.SOLUTION: A vehicle seat reclining device includes: a first bracket; a second bracket 31; a cam 50; and a second pole 40B and a third pole 40C which move in a radial direction of the first bracket to engage with the second bracket 31 based on rotation or movement of the cam 50. The second pole 40B and the third pole 40C have slide grooves 112B, 112C extending in a direction corresponding to radial movement. The first bracket has engagement protrusions 110B, 110C which are slidably inserted into the slide grooves 112B, 112C. The engagement protrusions 110B, 110C contact with inner surfaces of the slide grooves 112B, 112C to bias the second pole 40B and the third pole 40C in a direction intersecting with the radial movement of the second pole 40B and the third pole 40C when the second bracket 31 engages with the second pole 40B and the third pole 40C.SELECTED DRAWING: Figure 13

    【課題】部品点数を増やすことなく、ポールのがたつきの抑制と、組み付けの改善を図る乗物用シートリクライニング装置の提供を図る。【解決手段】第1ブラケットと、第2ブラケット31と、カム50と、カム50の回転または移動に基づいて第1ブラケットの径方向に移動して第2ブラケット31へ係合する第2ポール40B及び第3ポール40Cとを備え、第2ポール40B及び第3ポール40Cには径方向移動に対応する方向に延びた摺動溝112B、112Cを有し、第1ブラケットには摺動溝112B、112Cに摺動可能に挿入される係合突起110B、110Cを有し、係合突起110B、110Cは、第2ブラケット31と、第2ポール40B及び第3ポール40Cの係合するときに、摺動溝112B、112Cの内面に接触することで第2ポール40B及び第3ポール40Cの径方向移動に交差する方向に付勢する。【選択図】図13


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    Title :

    VEHICLE SEAT RECLINING DEVICE


    Additional title:

    乗物用シートリクライニング装置


    Contributors:

    Publication date :

    2018-12-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / A47C Stühle , CHAIRS



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