PURPOSE: To make reduction of a consumption power compatible with suppression of vibration by a method wherein a plurality of disc springs are located in parallel combination with a thrust bearing between a pressure receiving seat formed at the boss part of a swash plate and a pressure receiving seat formed at the support part of a cylinder block.
CONSTITUTION: When the two boss parts of a swash plate 5 are nipped by a cofastening member, containing two cylinder blocks 2 and 3, through thrust bearings 6A and 6B and disc springs 7 and 8, an axial fastening margin is absorbed by a buffering function based on resilient deformation adherent to the disc springs 7 and 8. During load speed operation, the disc springs 7 and 8 are easy to effect relative rotation as a complete different body and since support rigidity of the swash plate 5 based on a total of the repulsion forces of the disc springs 7 and 8 is low, a consumption force during low speed operation is reduced. Meanwhile, during high speed operation, the disc springs 7 and 8 are integrally formed and relative rotation is hard to make and since support rigidity of the swash plate 5 based on a repulsion force exceeding a total of the repulsion forces of the disc springs 7 and 8 is high, vibration and noise of the swash plate 5 are suppressed.
NAKAMOTO AKIRA
OBAYASHI MASAKAZU
KOUMURA TETSUSHI
IKEDA ISATO
KAWAMURA NAOTO
YOKOI MASANORI
MICHIYUKI HIROMI
