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Title:
SOUND DAMPING MOTOR AND SHIELD
Document Type and Number:
Japanese Patent JPH10159801
Kind Code:
A
Abstract:

To provide a hydraulic pump/motor which is provided with an end shield for absorbing the sound produced by the pump/motor so that it becomes a further quiet device.

A hydraulic pump/motor as before having an electric motor connected to a pump mechanism is provided, and the motor 12 includes the design structure of an end shield 34 by which sound is damped. This end plate weakens the sound produced by the vibration of the pump/motor 10 by using a sound absorbing material such as cast iron and polypropylene plastic. Further, such a design structure is provided that the stator is enabled to be fixed to a motor housing 26, and also before the end shield 34 is fitted, the provision of an accurate clearance between a rotor 78 and the stator 16 is enabled. Thus, not only a further quiet pump/motor can be obtained, but also a pump/motor 10 provided with a high machining tolerance, improved efficiency, and lower manufacturing/maintenance expense can be obtained.


Inventors:
HUNSBERGER DALE
HARWATH JULIE
HARWATH FRANK
Application Number:
JP25588797A
Publication Date:
June 16, 1998
Filing Date:
August 15, 1997
Export Citation:
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Assignee:
SUNTEC IND INC
International Classes:
F04B39/00; F01C21/10; F04B17/03; F04B53/00; F04C11/00; F04C15/00; F04D29/66; F15B1/00; H02K5/24; (IPC1-7): F15B1/00; F04B39/00
Attorney, Agent or Firm:
Yoshiki Hasegawa (4 outside)