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A protective cover for a portable electronic device includes a main body and a plurality of cushioning structures. The main body is configured to receive the portable electronic device. Each cushioning structure includes an elastic body protruding from the main body and a clearance defined between t

A protective cover for a portable electronic device includes a main body and a plurality of cushioning structures. The main body is configured to receive the portable electronic device. Each cushioning structure includes an elastic body protruding from the main body and a clearance defined between the main body and the elastic body. The elastic body is deformed toward the clearance when the elastic body is impacted.

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1. A protective cover for a portable electronic device, comprising: a main body configured to receive the portable electronic device and comprising a peripheral wall that comprises a plurality of corners anda plurality of cushioning structures arranged corresponding to the plurality of corners, each

1. A protective cover for a portable electronic device, comprising: a main body configured to receive the portable electronic device and comprising a peripheral wall that comprises a plurality of corners anda plurality of cushioning structures arranged corresponding to the plurality of corners, each cushioning structure comprising an elastic body protruding from the main body and a clearance defined between the main body and the elastic body, the elastic body comprising: elastic arms connected to each other, wherein a distal end of each of the arms is connected to a corresponding corner of the plurality of corners, the clearance is surrounded by the elastic two arms and the corner, the elastic arms deformable toward the clearance when the elastic arms are impacted; wherein the clearance is a blind hole. 2. The protective cover of claim 1, wherein an angle between the two elastic arms is approximately ninety degrees. 3. The protective cover of claim 1, wherein the cushioning structures are integrally formed with the main body, the protective cover is made of elastic. material. 4. The protective cover of claim 1, wherein the peripheral wall defines a plurality of through holes that expose keys and interface of the portable electronic device. 5. A protective cover for a portable electronic device, comprising: a main body configured to receive the portable electronic device comprising a peripheral wall that comprises a plurality of corners anda plurality of cushioning structures structure positioned at the main body and arranged corresponding to the plurality of corners, each cushioning structure comprising an elastic body protruding from the main body and a clearance defined between the main body and the elastic body;wherein each elastic body comprises elastic arms connected to each other, a distal end of each of the elastic arms is connected to a corresponding corner, the clearance is surrounded by the elastic arms and the corner; the elastic arms are deformable toward the clearance wherein the clearance is to blind hole. 6. The protective cover of claim 5, wherein an angle between the two elastic arms is approximately ninety degrees. 7. The protective cover of claim 5, wherein the cushioning structures are integrally formed with the main body, the protective cover is made of elastic material. 8. The protective cover of claim 5, wherein the peripheral wall defines a plurality of through holes that expose keys and interface of the portable electronic device.