Title:
【発明の名称】車両用交流発電機
Document Type and Number:
Japanese Patent JP3342978
Kind Code:
B2
Abstract:
A vehicle AC generator having a rotor located with in a main unit of the generator and journaled at a rotary shaft (3) includes a rectifier unit (21), including a plurality of diodes (34a, 34b), a circuit board, and positive-electrode and negative-electrode side cooling plates (32, 33), for rectifying an AC current. A rear bracket (22) covers at least one of the cooling plates (32, 33). Preferably, the diodes (34a, 34b) are soldered to the cooling plates (32, 33), which are formed in an arcuate-belt shape. Diode leads oppose each other diametrically; connection terminals of the circuit board are collectively spot-welded. The cooling plate is provided with radial cooling fins (32b), allowing air to flow smoothly and, thus, cooling at a relatively high efficiency. The rectifier unit (21) is mounted in the rear bracket (22), the cooling plate is directly connected to the bracket (22), and its heat is radiated therefrom. The diodes (34a, 34b) are arranged such that they overlap diametrically in the generator, allowing its axial length to be reduced.
Inventors:
Katsumi Adachi
Kazunori Tanaka
Kyoko Kurusu
Kazunori Tanaka
Kyoko Kurusu
Application Number:
JP32530594A
Publication Date:
November 11, 2002
Filing Date:
December 27, 1994
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02K19/36; H02K11/04; (IPC1-7): H02K19/36
Domestic Patent References:
| JP426346A | ||||
| JP6460244A | ||||
| JP6035944A | ||||
| JP59162739A | ||||
| JP564374U | ||||
| JP5167306U |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)