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1. (WO2013153684) INCLINED-SHAFT-TYPE AXIAL PISTON PUMP MOTOR

Pub. No.:    WO/2013/153684    International Application No.:    PCT/JP2012/064741
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Sat Jun 09 01:59:59 CEST 2012
IPC: F04B 1/24
F03C 1/253
Applicants: KOMATSU LTD.
株式会社小松製作所
MIYATA, Takuya
宮田 拓也
HAYASHI, Seita
林 盛太
Inventors: MIYATA, Takuya
宮田 拓也
HAYASHI, Seita
林 盛太
Title: INCLINED-SHAFT-TYPE AXIAL PISTON PUMP MOTOR
Abstract:
In order to prevent oil leaks between a valve plate and a cylinder block more reliably without causing the support ends of a center shaft and the support ends of piston rods to separate from the end face of a drive shaft, a center shaft (90) is equipped with: an outer race (920), which is mounted in a shaft-mounting hole (41) of a cylinder block (40), and has a shaft-part-housing hole (921) on one end and a spring-housing hole (922) on the other end; and an inner shaft (910), which has at the tip of a shaft base part (911) a shaft support ball head part (912) having a large outer size, and which is mounted in the shaft-part-housing hole (921) of the outer race (920) by means of the shaft base part (911). With a compression spring (930) housed in the spring-housing hole (922), one end of the outer race (920) is mounted in the shaft-mounting hole (41) of the cylinder block (40), and the center shaft is supported in a tiltable manner on the end face of the drive shaft (30) by a retainer plate (100), via the shaft support ball head part (912) of the inner shaft (910).