Abstract: A passive radiator includes a frame, a vibrating member, a surround and a plurality of strengthening ribs. The vibrating member is disposed in the frame. The surround includes a first arc portion and a second arc portion. The first arc portion is connected to the frame. The second arc portion is connected to the vibrating member. The first arc portion and the second arc portion are connected to form an S shape. The strengthening ribs are connected to the first arc portion and the second arc portion. A thickness of the strengthening rib corresponding to the first arc portion is larger than a thickness of the strengthening rib corresponding to the second arc portion. Furthermore, the passive radiator may include a plurality of reinforcing ribs connected to the first arc portion. Moreover, a thickness of the first arc portion may be larger than a thickness of the second arc portion.

Abstract: A passive radiator includes a frame, a vibrating member, a surround and a plurality of strengthening ribs. The vibrating member is disposed in the frame. The surround includes a first arc portion and a second arc portion. The first arc portion is connected to the frame. The second arc portion is connected to the vibrating member. The first arc portion and the second arc portion are connected to form an S shape. The strengthening ribs are connected to the first arc portion and the second arc portion. A thickness of the strengthening rib corresponding to the first arc portion is larger than a thickness of the strengthening rib corresponding to the second arc portion. Furthermore, the passive radiator may include a plurality of reinforcing ribs connected to the first arc portion. Moreover, a thickness of the first arc portion may be larger than a thickness of the second arc portion.

Abstract: A folding mobile phone includes a main body including a first housing, and a processing unit installed inside the first housing for controlling operation of the folding mobile phone. The folding mobile phone further includes a display module pivoted to the main body in a foldable manner. The display module includes a second housing. The folding mobile phone further includes a panel connected to a first side of the first housing and a first side of the second housing in a rotatable manner. When the display module rotates to a first position relative to the main body, the first housing and the second housing shield the panel together, and when the display module rotates to a second position relative to the main body, at least part of the panel exposes out of the first housing and the second housing.