Title:
ELECTRIC MOTOR OIL PUMP ASSEMBLY, STEERING SYSTEM AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/059382
Kind Code:
A1
Abstract:
Disclosed are an electric motor oil pump assembly (1000), a steering system and a vehicle. The electric motor oil pump assembly (1000) comprises: an electric motor assembly (200); an oil pump assembly (100); an inner soundproof cover (400), the inner soundproof cover (400) being sheathed outside the oil pump assembly (100), and defining, together with the oil pump assembly (100), an inner layer soundproof cavity (401) filled with low pressure oil, the inner layer soundproof cavity (401) being in communication with a low-pressure cavity (101) of the oil pump assembly (100), and the inner soundproof cover (400) being provided with a soundproof cover cavity (402); and a pre-tightening buffer assembly (300), the pre-tightening buffer assembly (300) comprising a piston (310) and an elastic member (320), the piston (310) being in cooperation with the soundproof cover cavity (402) and forming as an integral body with an upper end cover (110) of the oil pump assembly (100), and the elastic member (320) being elastically clamped between a top wall of the soundproof cover cavity (402) and the piston (310). The soundproof cover cavity (402) is in communication with a high pressure cavity (102) of the oil pump assembly (100), so that the piston (310) presses the upper end cover (110) under the action of oil pressure.
Inventors:
YANG SHENGLIN (CN)
LI JUN (CN)
YANG KUNZHEN (CN)
LIU YAN (CN)
RAO GUOJIE (CN)
WANG TAO (CN)
XUE HUI (CN)
LI YANZI (CN)
CHEN TAIJI (CN)
LI JUN (CN)
YANG KUNZHEN (CN)
LIU YAN (CN)
RAO GUOJIE (CN)
WANG TAO (CN)
XUE HUI (CN)
LI YANZI (CN)
CHEN TAIJI (CN)
Application Number:
PCT/CN2017/103359
Publication Date:
April 05, 2018
Filing Date:
September 26, 2017
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
B62D5/06; B60R13/08; F04D13/08
Foreign References:
| CN204419616U | 2015-06-24 | |||
| CN204419617U | 2015-06-24 | |||
| US5236315A | 1993-08-17 | |||
| US6254358B1 | 2001-07-03 | |||
| EP0782672A1 | 1997-07-09 |
Other References:
See also references of EP 3521138A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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