| 摘要 |
PURPOSE:To prevent the generation of seizure by making the key of an Oldham's ring from aluminium alloy and installing a channel made of iron-group material into the guide groove of a movable scroll engaged with the key. CONSTITUTION:The key 11b of an Oldham's ring 11 is made of aluminium alloy, and a channel 12 made of iron-group material is installed into the guide groove 3b of a movable scroll 3 engaged with the key 11b. Since when the key 11b moves in sliding in the channel 12, the both are made of different kinds of metals, generation of seizure on the sliding surfaces is prevented, and since the key is made of aluminium alloy, the lightweight Oldham's ring 11 can be obtained. |
