OPENING/CLOSING MEMBER DRIVE DEVICE AND OPENING/CLOSING UNIT

To alleviate the lack of space inside a case of an opening/closing member drive device and improve the ease of applying grease to a gear train mechanism.SOLUTION: A case 10 of an opening/closing member drive device 3 is formed by stacking and combining a first case 61 that houses a motor 12, a second case 62 that is provided with a partition wall portion 55, and a third case 63 in which an output shaft 11 is disposed. The third case 63 has a first shaft press-fitting portion 88 into which one end of the first shaft 28 of a gear train mechanism 13 is press-fitted, and a second shaft press-fitting portion 89 into which one end of a second shaft 29 of the gear train mechanism 13 is press-fitted. The first case 61 includes a first shaft holding portion 67 that holds the other end of the first shaft 28, and a second shaft holding portion 68 that holds the other end of the second shaft 29. The first shaft press-fitting portion 88 is longer in the axial direction X than the first shaft holding portion 67, and the second shaft press-fitting portion 89 is longer in the axial direction X than the second shaft holding portion 68.SELECTED DRAWING: Figure 6 【課題】開閉部材駆動装置のケース内のスペース不足を緩和し、輪列機構へのグリス塗布の作業性向上を図る。【解決手段】開閉部材駆動装置３のケース１０は、モータ１２を収容する第１ケース６１と、隔壁部５５が設けられた第２ケース６２と、出力軸１１が配置される第３ケース６３を積層して結合する。第３ケース６３は、輪列機構１３の第１シャフト２８の一端が圧入される第１軸圧入部８８と、輪列機構１３の第２シャフト２９の一端が圧入される第２軸圧入部８９を備える。第１ケース６１は、第１シャフト２８の他端が保持される第１軸保持部６７と、第２シャフト２９の他端が保持される第２軸保持部６８を備える。第１軸圧入部８８は、第１軸保持部６７よりも軸線方向Ｘの長さが長く、第２軸圧入部８９は、第２軸保持部６８よりも軸線方向Ｘの長さが長い。【選択図】図６