| 摘要 |
<p>An interactive type of a balancing device comprises a backpack body , a balancing device, left and right shoulder straps whose top end and tail end can be connected with or detachably be connected with the balancing device respectively. Said balancing device is consisted of a lower assembly and an upper assembly connected with the backpack body and supported by the lower assembly .The left and right shoulder straps move along a rotating assembly of the upper assembly .The lower assembly connected with the backpack body is consisted of a baffle plate and a movable device which is installed in a hollow part of a interlayer of said baffle plate. Said upper assembly and lower assembly can be used at the same time or be used by itself.</p> |
