Patent ID: 7673844

Claim:
A pivotable support shaft for display, comprising a main shaft, a first connecting seat, a retaining plate and a retaining pin, wherein the main shaft is to be fixed to a mounting base member of the display, the first connecting seat is to be attached to a back portion of the display, the first connecting seat is mounted on the main shaft in a manner that the first connecting seat is fixed in the axial direction of the main shaft and is able to rotate around the main shaft, the first connecting seat comprises a retaining surface, the retaining plate is mounted on the main shaft in a manner that it is restricted from rotating around the main shaft, the retaining plate comprises a first, a second and a third retaining edges, the retaining pin is mounted on the first connecting seat in a way of moving together with it, the retaining pin has a freedom-of-movement in the axial direction of the main shaft with a moving path delimited by a first position and a second position, wherein in the first position, the retaining pin extends into a space between the first and second retaining edges, with the first and second retaining edges being in the rotating path of the retaining pin and the third retaining edge being outside of the rotating path of the retaining pin, and in the second position, the first and second retaining edges being outside of the rotating path of the retaining pin and the third retaining edge being in the rotating path of the retaining pin; and wherein a shifting lever is fixed to the retaining pin, an elastic member is disposed around the retaining pin in the axial direction of the main shaft, with the opposite ends of the elastic member bearing against the shifting lever and the first connecting seat respectively, to pushing the retaining pin towards the first position, and the retaining pin can be pushed by the shifting lever against the elastic urging force of the elastic member towards the second position.