| 摘要 |
<p>PURPOSE:To reduce abrasion and to relax the accuracy of rail parallelism by allowing a rail sliding part to be a surface contact and supporting bearings with a plane. CONSTITUTION:When the reel turntable bases 4, 5 placed with the reel bases 2, 3 are moved along the rails 8a, 9a and 8b, 9b according to a distance between the reels of a cassette to be used, the bearings sliding along the rails are slide rollers having a surface contact, where the surface pressure of a contacting part is made extremely small compared with a line contact and provided with the durability. Meantime, the bearings provided on the reel turntable bases 4, 5 are not fixed on the reel turntable bases 4, 5, the rails that guide the reel bases may be sufficient if they are present on the same plane, and a strict adjustment in the parallelism is eliminated. Therefore, the assembly of this device is facilitated.</p> |
