초록 ▼

A plastic end shield for use in a dynamoelectric machine of the type having a rotor assembly rotatably disposed in a housing includes an end plate for attachment to the housing, so as to provide structural support for one end of the rotor assembly, and a thermal barrier adjacent to the end plate for

A plastic end shield for use in a dynamoelectric machine of the type having a rotor assembly rotatably disposed in a housing includes an end plate for attachment to the housing, so as to provide structural support for one end of the rotor assembly, and a thermal barrier adjacent to the end plate for thermally insulating the end plate from heat generated inside the housing. In a preferred embodiment, radial and circumferential support members and axial and circumferential reinforcing ribs are employed in order to efficiently utilize the plastic material. The thermal barrier may be provided with a plurality of vent openings through which heat generated inside the housing can escape from the housing and the end plate. Means employed to attach the end plate and thermal barrier to the housing may include a thermally insulative material which prevents heat from being conducted from the housing to the end plate.

대표청구항 ▼

An end shield for a dynamoelectric machine of the type having a rotor assembly rotatably disposed in a housing, said end shield comprising: an end plate comprising high strength plastic attached to said housing for providing structural support for one axial end of said rotor assembly and for maintai

An end shield for a dynamoelectric machine of the type having a rotor assembly rotatably disposed in a housing, said end shield comprising: an end plate comprising high strength plastic attached to said housing for providing structural support for one axial end of said rotor assembly and for maintaining a predetermined distance between the radially outermost portion of said rotor assembly and the radially innermost portion of said housing; and a substantially solid thermal barrier comprising a plastic plate having both a low thermal conductivity and an ability to withstand heat in the range of approximately 150-200 degrees centigrade located adjacent to said end plate and disposed so as to thermally insulate said end plate from connective heat generated inside said housing.