| 摘要 |
The cargo carrier according to the invention includes only three modular components which are embodied by a carrier frame and two support arms. These three components are easily assembled without the need of any coupling devices in addition to or external from the components themselves. According to the invention, inter-fitting tubular bearings of the carrier support arm and of the carrier frame require no pivot pins yet allow the carrier support arm to swing to various positions behind and to the side of the vehicle. A tubular bearing of the carrier frame is merely dropped into place into a corresponding tubular bearing of the upper support arm in a resting and nesting manner in order to rotate the carrier frame freely relative to the upper arm. In turn a second tubular bearing of the upper support arm is dropped into place into a corresponding tubular bearing of the lower support arm in order to rotate the upper support arm freely relative to the lower arm. The inter-fitting tubular bearing system according to the invention allows for 360° rotation between the carrier frame and an upper support arm, and between the upper support arm and a lower support arm which is mounted to the vehicle in a fixed manner. This arrangement permits a range of positions of the carrier frame relative to the vehicle which heretofore was unachievable with a three component system. |
