Title:
差動型油圧モータ
Document Type and Number:
Japanese Patent JP3596993
Kind Code:
B2
Abstract:
A differential hydraulic motor comprises a swash plate joined to an output shaft, and a cylinder block joined to an input shaft. A change-over valve is provided which changes over according to the relative rotation of the output shaft and input shaft, and leads a different fluid pressure to pistons housed in the cylinder block according to whether these pistons are extending or contracting. A rotary distributor is provided which connects a high pressure port and low pressure port in a casing to the change-over valve even when the cylinder block is rotating. This rotary distributor comprises a port block which is free to slide in the casing. Pressure from the high pressure port acts on a piston formed on an end face of the port block so as to push the port block against a sliding surface of a cover block joined to the cylinder block. Annular ports connected to the high pressure port and low pressure port are formed on this sliding surface, and high pressure and low pressure are led to the change-over valve from these annular ports.
Inventors:
Nagatomo Kuniyasu
Application Number:
JP27981396A
Publication Date:
December 02, 2004
Filing Date:
September 15, 1996
Export Citation:
Assignee:
Nagatomo Fluid Machinery Laboratory Co., Ltd.
Nissan Motor Co., Ltd
Nissan Motor Co., Ltd
International Classes:
F03C1/06; F03C1/24; F03C1/34; F16H39/42; F16H39/02; (IPC1-7): F16H39/02; F03C1/24
Domestic Patent References:
| JP6341507A | ||||
| JP1250661A | ||||
| JP60011687A | ||||
| JP62119560U |
Foreign References:
| US5058485 |
Attorney, Agent or Firm:
Masaki Goto
Fuyuki Nagai
Yoshio Matsuda
Fuyuki Nagai
Yoshio Matsuda