| 摘要 |
<p>According to the invention, a protection device comprises at least a rear part (6) and at least a front part (4), the rear part (6) comprises at least a rear side sheet (12), the front part (4) comprises at least one front side sheet (14), the sheets (12, 14) are fixed onto each other in an adjustable manner, a part where a passageway (10) through which a user can sticks an arm is formed is defined between the sheets, one of the side sheets (12, 14) comprises at least one fixed point which is fixed on the side sheet, the other side sheet (12, 14) comprises at least one ring which is connected to the side sheet, the ring forms a return component which faces to a fixed point return belt, the belt can be arranged for fixing and compressing the sheets (12, 14), and free end parts of the belt on the ring can be conncted by pulling the free end parts.</p> |
