| 摘要 |
<p>PURPOSE:To attain sure power transmission by narrowing at least a tooth width of the 1st gear where a tooth missing gear starts meshing with a driving gear to provide elasticity to a tooth starting meshing thereby attaining smooth meshing. CONSTITUTION:In depressing the non-lock type program switching button at the PLAY mode in the direction of the NOR, the locking of a PLAY lock lever 18 is released, an N/R gear 47 meshes with a 2-stage gear 25 to switch an N/R slide switch to the REV position, and a head gear 21 is meshed with the 2-stage gear 25 to move a switching arm 27 and to change the mode to the reverse PLAY mode. The head gear 21 and the N/R gear 47 have a tooth missing part, the tooth width of the 1st gear or several gears starting meshing with the 2- stage gear being the driving gear is more narrowed than that of the other gears to provide the elasticity to the tooth starting meshing. When the shaft center of the gears 21, 47 is shifted to the shaft center of the gear 25, the meshing is attained smoothly.</p> |
