Abstract: A supporting device includes a bottom seat with a first positioning member, a first supporting frame pivotally connected with the bottom seat, a second supporting frame, a third supporting frame pivotally connected with the first supporting frame and a fourth supporting frame to be coupled with a supported object. The second supporting frame is pivotally connected with the first supporting frame so as to change a height as a result of an angle of the first supporting frame relative to the bottom seat. The second supporting frame has a second positioning member to be coupled with the first positioning member in order to fix the first and second supporting frames. The fourth supporting frame is pivotally connected with the second and third supporting frame so that an angle and a height of the supported object are simultaneously changed with a pivoting motion of the first, second, third and fourth supporting frames.

Abstract: A support frame for a portable electronic device includes a frame body, a first support arm, and a second support arm. The first support arm includes a first casing plate and a first inner plate. The first casing plate is pivotally connected to the frame body. The first inner plate is movably accommodated in the first casing plate. The second support arm includes a second casing plate and a second inner plate. The second casing plate is pivotally connected to the frame body. The second inner plate is movably accommodated in the second casing plate. The first and second inner plates are pivotally connected to each other. The first and second inner plates are provided with multiple positioning portions, respectively. Each of the first and second casing plates is provided with a positioning member that can be positioned to one of the positioning portions of the corresponding inner plate.

Abstract: Disclosed is a plug retention device consisting of a frame applied between the socket of an electronic device and it's plug. The frame decreases the annular gap present between the plug and socket, thereby improving retention of the plug within the socket and preventing accidental disconnection.