Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CURRENT COLLECTOR OF ROTARY ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JPS61251454
Kind Code:
A
Abstract:
PURPOSE:To enable to prevent a bearing from damaging due to an electric contact by coating a creeping insulating layer on a V-shaped ring and the end of the ring from the axial end of a commutator segment with an arc resistant ring, and providing a bent part projected from an insulating stud side on the outer periphery. CONSTITUTION:An arc resistant ring 12a is mounted on the entire periphery from the end of a commutator segment 1 to the end of a V-shaped ring 4 to coat a creeping insulating layer 11 and the upper end surface of the ring 4. An arc ring 15 is projected from a frame 8 near the large-diameter part of the ring 12a at the center. Thus, even if exposed with an arc generated in a current collector, it is shortcircuited with the ring 15 projected from the frame 8, and the arc is interrupted at the large-diameter part of the ring 12a. A shortcircuit from the end side exposed at the end of the ring 4 is hardly performed to eliminate the formation of an electric circuit to a bearing 7 through a rotational shaft 2 to prevent the bearing 7 from damaging due to an electric contact.

More Like This:
Inventors:
ODAKURA MITSUO
MITSUNAGA ISAMU
Application Number:
JP9147785A
Publication Date:
November 08, 1986
Filing Date:
April 26, 1985
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI LTD
International Classes:
H01R39/00; H02K13/00; (IPC1-7): H01R39/00
Domestic Patent References:
JP57143879B
JPS52132306A1977-11-07