| 摘要 |
The mechanism has a base (1) set flat in the surface of the parking area, with a 'U'-shaped loop (4) that pivots (3) upward to block vehicles entering the parking space. The arm is operated by a battery-powered electric motor controlled via a wireless connection. The arm is made of a material that bends under impact or force, so it is not damage by accidental impact or forced passage. The arm has an outer envelope of cylindrical, elliptical or polygonal shape, which is connected to a hollow internal core by a semi-rigid material such as rubber or plastic foam. The drive to the arm can slide inside the base to decouple external force from the drive. |
