| 摘要 |
A device for mounting a wheel to a vehicle having a housing for an axle, the device including a shaft, the shaft having a first end insertable into the housing and comprising a device for frictionally engaging an inner wall of the housing, a second end of the shaft comprising a support for mounting a wheel thereon. In one preferred embodiment, the frictional engaging device is threadably received on the first end of the shaft for expanding into contact with the inner wall of the housing in response to rotation of the shaft in a first direction and for contracting in response to rotation of the shaft in a second direction. In an alternate embodiment, the device comprises a disk mounted on the end of the shaft and adapted to come into frictional engagement with the inner wall of the housing by the weight of the vehicle.
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