Abstract: A pressure-relieving back pack, comprising: a pack body (1), a pressure-relieving plate (2), a pressure-relieving assembly, two straps (4), and a supporting plate. The supporting plate is provided at a rear part of the pack body (1). The pressure-relieving plate (2) is provided at a side of the rear part of the pack body (1) near to the back. The pressure-relieving assembly comprises a spring mechanism and a hollow casing (33). The casing (33) is mounted at the rear part of the pack body (1). The spring mechanism is detachably provided inside the casing (33). The spring mechanism comprises a compression spring (31) and a retractable rod (32). The compression spring (31) is sleeved around and position-limited with respect to the retractable rod (32). A second end (322) of the retractable rod (32) and the compression spring (31) are position-limited within the casing (33).

Abstract: A pressure-relieving back pack, comprising: a pack body (1), a pressure-relieving plate (2), a pressure-relieving assembly, two straps (4), and a supporting plate. The supporting plate is provided at a rear part of the pack body (1). The pressure-relieving plate (2) is provided at a side of the rear part of the pack body (1) near to the back. The pressure-relieving assembly comprises a spring mechanism and a hollow casing (33). The casing (33) is mounted at the rear part of the pack body (1). The spring mechanism is detachably provided inside the casing (33). The spring mechanism comprises a compression spring (31) and a retractable rod (32). The compression spring (31) is sleeved around and position-limited with respect to the retractable rod (32). A second end (322) of the retractable rod (32) and the compression spring (31) are position-limited within the casing (33).

Abstract: The present invention discloses an anti-gravity backpack, which comprises a backpack body and two shoulder straps. A supporting plate is provided on a back of the backpack body, and a pressure reducing plate is provided on a back of the supporting plate. A first elastic band and a length fixing band are provided between the pressure reducing plate and the supporting plate. The existence of the pressure reducing plate, the first elastic band and the length fixing band causes the backpack to bounce up and down to act as a buffer, which not only relieves the pressure on the wearer's shoulders but also saves the wearer's energy with the resilience produced by the elastic band, thus helping slow down the wearer's rate of muscle fatigue and make the wearer feel less burden on the body.