| 摘要 |
<p>A pressure adjustable air cushion shoulder strap comprises an air pressure adjustable shoulder strap back cushion (2) and an air charging device (4) utilized for charging air toward the shoulder strap back cushion (2). The shoulder strap back cushion (2) comprises an air pressure adjustable shoulder strap (21) and an air charging air cushion (22). The air charging device (4) comprises a movable air cylinder (42), which comprises a cylinder body (421), an air cylinder upper cover (422) and an air capsule column (423). A guide groove (4211) is opened and located on one lateral surface of the cylinder body (421). The air capsule column (423) is placed within the cylinder body (421), and the air cylinder upper cover (422) is placed within the cylinder body (421) and buckled with the air capsule column (423). An air inlet one-way valve (5) and an air conveying one-way valve (6) are located on the air inlet end and the air conveying end of the air capsule column (423), respectively. The air charging air cushion (22) is connected with the air conveying one-way valve (6) through a communicating pipe (7). The shoulder strap back cushion (2) is provided with an air discharging valve (8) connected with the internal part of the shoulder strap back cushion (2). The air cushion shoulder strap can automatically adjust the air pressure of the shoulder strap back cushion (2). A backpack is composed of the pressure adjustable air cushion shoulder strap and a bag body (1).</p> |
