| 主权项 |
1. A handheld device comprising:
a body having a back portion, the back portion having a plurality of slots, the back portion having a rigid surface; and a back cover covering the back portion and comprising:
a yielding layer having an outer surface and an inner surface opposite to each other, the inner surface facing the back portion; anda rigid layer located on the inner surface and having a plurality of hooks, the plurality of hooks locking to the plurality of slots of the back portion, the rigid layer having a hole exposing the back portion and covered by the yielding layer, a portion of the yielding layer covering the hole, extending toward the back portion via the hole, having at least one yielding protraction rib facing the back portion;wherein when the portion of the yielding layer corresponding to the hole is pressed and contacts with the rigid surface of the back portion, the yielding layer is pushed against the rigid surface via the hole and the portion of the yielding layer is elastically deformed, and the plurality of hooks are released from the plurality of slots due to a force between the portion of yielding layer and the back portion, such that the back cover is able to depart from the body. |
