| 摘要 |
PROBLEM TO BE SOLVED: To provide an annular spring device free from reduction in constant of a spring for especially an automatic gear shifting device, damage and/or deviation force and strain of a coil spring. SOLUTION: The annular spring device comprises first and second annular support plates of the same central axes with a space; a plurality of coil springs disposed in parallel with same space along the same peripheries; and a plurality of guide assemblies situated with a space along the periphery around the ring. Each of the guide assemblies contains a first tub extending from one toward the other of the plates, and a second tab extending from the other toward the one of the plates. The spring device is formed that, when the plate is vertically moved to compress and/or release the coil spring, the first tab and the second tab make contact with each other and slide over each other, the first tab has a guide slot in a direction extending vertically to the plate, the second tab carries a guide member extending through the slot, and vertical movement between the plates is guided. COPYRIGHT: (C)2003,JPO
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