Patent ID: 8194055

Claim:
A stylus retaining mechanism comprising: a stylus including a tip end and defining a cavity, two parallel posts formed in the cavity; a main body defining a stylus receiving chamber and a through hole above the stylus receiving chamber; an elastic member positioned at one end of the stylus receiving chamber and one end of the elastic member placed around the tip end of the stylus; and a button assembly attached in the cavity of the stylus and partially received in the through hole, the button assembly including a button for direct contact by a user, two springs, the springs respectively placed around the posts, and abutting against the button, whereby pressing of the button by the user causes the button assembly to release the latching of the stylus in the receiving chamber, and the elastic member providing a force to push the stylus from the stylus receiving chamber, wherein the button assembly further includes a holder received in the cavity, the holder is mounted on the springs and the button, and the holder defines an opening allowing the button to partially extend through.