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Patent Searching and Data


Title:
ELECTROHYDRAULIC SERVO MOTOR
Document Type and Number:
Japanese Patent JP2000213502
Kind Code:
A
Abstract:

To provide a compact and highly reliable electrohydraulic servo motor having reduced shaft length despite the adoption of a spool valve.

This electrohydraulic servo motor is provided with a first helical gear 44 connected with an output shaft 34, a second helical gear 45 engaged with the first helical gear 44, a spool 54, which is rotatably connected with the second helical gear 45 and is moved in the axial direction by the second helical gear 45 in order to regulate the communicating state between a working oil discharge passage 31a or a working oil supply passage 31b with a circular arc hole 40a of a valve plate 40, and a motor 50 having a revolving shaft 51 threadedly coupled with the second helical gear 45.


Inventors:
Shimizu, Nobuaki
Asano, Yoji
Application Number:
JP1999000013633
Publication Date:
August 02, 2000
Filing Date:
January 21, 1999
Export Citation:
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Assignee:
TEIJIN SEIKI CO LTD
International Classes:
F15B9/08; F03C1/253; (IPC1-7): F15B9/08; F03C1/253
Attorney, Agent or Firm:
有我 軍一郎