| 摘要 |
<p>A front caster assembly (20) for a canister-type vacuum cleaner (10) includes a swivel body member (22) mounted for pivotal movement to the underside (12) of the vacuum cleaner casing. A caster wheel (52) is mounted on the underside of the swivel body member (22) for rolling contact with the floor. A pair of small idler wheels (48) are snap-fit onto the upper surface of the swivel body member (22), each having its rotational axis offset approximately 45 degrees from the line of rotation (64) of the caster wheel (52), with the rotational axes intersecting at the pivot axis (26) of the swivel body member (22). The idler wheels (48) contact the underside of the vacuum cleaner casing (12) to act as low friction bearings for pivoting movement of the swivel body member (22). The swivel body member (22) is formed with an elongated flat portion (66) removed from its pivot axis (26) which serves as part of the cord wrap structure (66, 68) for the vacuum cleaner (10).</p> |
