| 摘要 |
<p>BRUSH HOLDER AND BRUSH ASSEMBLY FOR A DYNAMOELECTRIC MACHINE A brush holder and brush assembly for a dynamoelectric machine is constructed in such a way that the holder can be moulded in one piece of electrical insulating material. The holder has an opening which receives the rotating part of the machine to be contacted by current carrying brushes. The holder includes at least two oppositely disposed brush holding housings each having an end wall remote from the aforesaid opening and being open on two opposite sides thereof. Each housing also has two spaced apart side walls facing each other and extending from the end wall, the end of the housing opposite the end wall being open and opening into the aforementioned opening which receives the rotating part of the machine. Ribs extend inwardly from the side walls of the housings and run between the two ends of the housings. These ribs extend into recesses in the side walls of current carrying brushes that are mounted in the housing with the brushes engaging the side walls of the housings. Springs are located in the housings between the brushes and the end walls biasing the brushes towards the opening in the holder that receives the rotating part of the machine. Associated with each housing is a finger located adjacent one of the open sides of the housing. The finger and the ribs of each housing contact the spring in the housing and serve to prevent it from falling through the open sides of the housing.</p> |
