Dc motor

Abstract

PURPOSE:To eliminate radio wave fault by burying a metallic shielding plate in a terminal base, pressing an earth electrode cylinder for surrounding a noise preventive element and a yoke opening end to the shielding plate and thus absorbing high frequency noise generated from the interior of a DC motor. CONSTITUTION:A metallic shielding plate 14 is buried in a terminal fixing base 4 made of synthetic resin. The base 2 of a brush 1 is passed through a noise preventive element 3, projected therefrom, and an earth electode cylinder 3a for surrounding the element 3 is pressed on the shielding plate 14. When the terminal fixing base 4 is associated with the yoke 7, the shielding plate 14 is pressed on the opening end of the yoke 7, and a noise preventive element 13 is disposed inside surrounded by the yoke 7 and the shielding plate 14. Thus, the high frequency noise can be absorbed to the noise preventive element, and the radio wave fault to the external equipment can be eliminated.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (4)

    Publication numberPublication dateAssigneeTitle
    FR-2774526-A1August 06, 1999Bosch Gmbh RobertMoteur a collecteur avec deux ou plusieurs raccords d'alimentation (+, -) permettant un deparasitage ameliore
    JP-2009281421-ADecember 03, 2009Teikoku Piston Ring Co Ltd, 帝国ピストンリング株式会社ピストンリング
    JP-H0539158-UMay 25, 1993株式会社三協精機製作所小型直流モータ
    WO-9940671-A1August 12, 1999Robert Bosch GmbhKollektormotor