Title:
電動ウォータポンプ用ロータ
Document Type and Number:
Japanese Patent JP7410737
Kind Code:
B2
Abstract:
To provide a rotor for an electric water pump, in which while a slide bearing made of a thermoplastic resin composition can be manufactured at low cost, the slide bearing hardly shrinks in an inner diameter thereof before and after insert molding and which is excellent in low friction and low wear characteristics.SOLUTION: A rotor 1 used for an electric water pump has a main body 2 supporting an impeller of the pump, a slide bearing 3 rotatably supporting a shaft, and a magnet 4 disposed to face a stator. The slide bearing 3 is an annealed body of a polyphenylene sulfide resin composition, and the polyphenylene sulfide resin composition contains 5 to 30 vol.% of carbon fibers, 1 to 20 vol.% of a polytetrafluoroethylene resin and 1 to 30 vol.% of graphite with respect to the total volume of the composition. The main body 2 is an injection-molded body that is injection-molded on the outer diameter side of the slide bearing 3 by using a thermoplastic resin composition different from the polyphenylene sulfide resin composition.SELECTED DRAWING: Figure 1
Inventors:
Ken Yasuda
Application Number:
JP2020020918A
Publication Date:
January 10, 2024
Filing Date:
February 10, 2020
Export Citation:
Assignee:
ntn corporation
International Classes:
F04D29/046; F04D13/06; F16C17/02; F16C33/20
Domestic Patent References:
| JP2015183650A | ||||
| JP2007051705A | ||||
| JP2017025742A |
Attorney, Agent or Firm:
Wake Hikari
Wake Misao
Satoshi Teramoto
Wake Misao
Satoshi Teramoto
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