| 摘要 |
Telescoping upper and lower units are provided for use on the bed of a vehicle. Rotatable gears are supported on the inside of the lower unit and rack gears are secured to the inside of the upper unit for use for moving the upper unit to upward and downward positions relative to the lower unit. The rear ends of the upper and lower unit have upper and lower doors which are slidably relative to each other and are pivotally coupled to the rear walls of the upper and lower units for pivotal movement about aligned axes for opening and closing upper and lower door openings formed in the upper and lower units respectively. Rollers are provided on the bottom side of the lower unit and which may be moved to downward extending and retracted position for removing and/or installing the apparatus from or onto the bed of the vheicle. A plurality of support posts or legs are secured to the lower unit which are movaable to retracted and supporting positions for supporting the apparatus when removed from the vehicle. A flexible wind shield is coupled to the outside and upper end of the front wall of the upper unit and has magnetic material for removably coupling its lower end to the cab of a vehicle when the lower unit is supported in its lower position.
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