Title:
OIL PUMP
Document Type and Number:
Japanese Patent JP2020037937
Kind Code:
A
Abstract:
To secure assembling accuracy of each member while reducing a weight.SOLUTION: An oil pump includes an inner rotor having outer teeth, an outer rotor having inner teeth engaged with the outer teeth of the inner rotor, a cylindrical first core for housing the inner rotor and the outer rotor, a resin housing having a recessed portion for holding the first core, a disc-shaped second core disposed while axially kept into contact with the first core, and a resin cover disposed in an axial direction to the housing, having a holding hole for holding the second core, and closing an opening of the recessed portion of the housing. The first core has a first uneven portion formed on a first axial end surface at a side axially opposed to an axial end surface opposed to a bottom wall of the recessed portion. The second core has a second uneven portion formed on a second axial end surface kept into contact with the first axial end surface of the first core and fitted to the first uneven portion. A clearance is formed between opposed surfaces of the housing and the cover in a state that the first axial end surface and the second axial end surface are kept into contact with each other.SELECTED DRAWING: Figure 13
Inventors:
SAKAI SHINYA
PARK SUNGJUNE
HATTORI TAKESHI
PARK SUNGJUNE
HATTORI TAKESHI
Application Number:
JP2019086356A
Publication Date:
March 12, 2020
Filing Date:
April 26, 2019
Export Citation:
Assignee:
TOYODA GOSEI KK
International Classes:
F04C2/10; F04C15/00
Domestic Patent References:
| JP2014051964A | 2014-03-20 | |||
| JP2017066976A | 2017-04-06 | |||
| JP2006329054A | 2006-12-07 | |||
| JP2013163988A | 2013-08-22 | |||
| JP2001182669A | 2001-07-06 |
Attorney, Agent or Firm:
Patent business corporation Kyoritsu