Back to results
US 6,664,699 B2Granted
Rotary electric machine
AssigneeDenso Corporation
InventorsNobuhiro Shioya, Hitoshi Irie
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeDenso Corporation
InventorsNobuhiro Shioya, Hitoshi Irie
Estimating the term…
A rotary electric machine has a brush assembly that defines a slip ring cavity enclosing slip rings and brushes. The brush assembly provides two different outlets for particles and cooling air. The first outlet is located on a side with respect to a shaft and is directed in an axial backward direction. The second outlet is located on a bottom and is directed in a radial downward direction. The second outlet is close to a fan for inducing airflow in the slip ring cavity.
A rotary electric machine, comprising:
A rotary electric machine, comprising:
A rotary electric machine, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Means for supporting or protecting brushes or brush holders: for cooperation with slip-rings
Details for dynamo electric machines: brush holders
Arrangements for cooling or ventilating: cooling of commutators, slip-rings or brushes e.g. by ventilating
Dynamo-electric machines
Term ended 22 Aug 2021 (estimated)
1. Field of the Invention
The present invention relates to a rotary electric machine which has a slip ring cavity enclosing a slip ring and a brush.
2. Description of Related Art
Other features and advantages of the present invention will be appreciated, as well as methods of operation and the function of the related parts, from a study of the following detailed description and the drawings, all of which form a part of this application. In the drawings:
FIG. 1 is a cross sectional view of an alternator according to a first embodiment of the present invention;
FIG. 2 is a perspective view of a brush holder and a brush cover according to the first embodiment of the present invention;
An alternator 1 for a vehicle according to a first embodiment of the present invention is described with reference to the drawings.
The alternator 1 has a stator 2, a rotor 3 and a frame 4. The frame 4 supports the stator 2 and the rotor 3. The frame 4 also supports a brush unit 5 and a rear cover 6 on its outside. The alternator 1 is located in an engine room and mounted on a vehicular internal combustion engine via mounting stays extending from the frame 4. The alternator 1 is mounted such that, e.g., a rotating axis thereof is along a horizontal direction.
The stator 2 is supported and fixed on the frame 4. The stator 2 has a stator core 22, a stator winding 23 and insulators 24 insulating the stator winding 23 from the stator core 22. The stator winding 23 is connected to an output terminal 10 via a rectifier mounted on the frame 4.