| 摘要 |
<p>This invention relates to a device for a vacuum cleaner comprising a fan which is driven by an electric motor, the motor being encapsulated in a motor housing (10) comprising a hood shaped part (11) or the like and at least one side wall part (12) or the like intended to be joined to one another when the motor is assembled. The hood shaped part (11) as well as the side wall part (12) each are provided with a spacing (15, 16) for taking up a ball bearing (14, 16) supporting the shaft (13) of the electric motor and an abutting surface (18, 19) cooperating with an outer ring (14a, 16a) of said ball bearing (14, 16) in order to press the two ball bearings towards one another, the hood shaped part (11) and the side wall part (12) being provided with cooperating abutting surfaces (26, 27). The abutting surfaces (26, 27) will, when the electric motor is mounted in the motor housing and under the influence of small pressing forces between the hood shaped part (11) and the side wall part (12), not get in touch with one another but are at final assembly forced to join one another. The material stresses created in the side wall part and/or the hood shaped part (11 and 12 resp) are thereby taken up as a spring movement in the material.</p> |
