| 摘要 |
PURPOSE:To improve dustproof effect by providing guide grooves to opposite side walls of an upper lid, a means which locks a lower lid to the front wall, and a part where the rear wall of the lower lid is supported to the rear wall, and providing guide pins which engage the guide grooves with the lower lid. CONSTITUTION:The center part 2a of the front wall of the upper lid 1 projects from both end parts 2b, and an inverse L-shaped lock member 3 which is long enough to fit the lock projection 12 of the lower lid 1 is formed in both end parts 2b integrally. Both side walls 4 of the upper lid 1 has the front part consisting of a side wall part 4a as long as the front wall 2a and a longer rear-side wall part 4b, and guide grooves 5 are formed at a step parts to guide pins 22 of the lower lid. Projection pieces 6 are used to position plural cassettes in a carrier. The rear wall 7 of the upper lid 1 covers the outside of the rear wall 15 of the lower lid 10 and is provided with a step part 8 at the lower part, thereby engaging the rear step part 16 of the lower lid 10 from outside. When the lids are combined, the upper lid 1 is slid from the rear of the lower lid 10 until the step parts 8 and 16a abut on each other, and then pressed down to bring the projection 12 and lock member 3 into contact. Consequently, the dustproof effect is improved. |
