Patent ID: 6246392
Filing Date: 2001-06-12
Classification: G06F

Abstract:
A third axis input device for a mouse having a base, a circuit board, a tracking ball, a third-axis input device and a cover, said third axis input device comprising:a roller having two pivotal shafts extending outward from opposing sides thereof;two racks arranged on said base and disposed in correspondence with said shafts such that said roller is pivotally arranged between said two racks;an encode wheel integrally formed on one of said two shafts, said encode wheel having a plurality of light transmitting slits provided equidistantly on a rim portion thereof;an infrared module into which said rim portion of said encode wheel is received;an abutting wheel integrally formed on another one of said two shafts, said abutting wheel having a plurality of dents and bumps with equal separation arranged on a rim thereof;a hollow guiding pole arranged on said base in correspondence with said abutting wheel;an elastic member provided within said hollow guiding pole;a supporting member arranged upon said elastic member and contacting said abutting wheel; and,a center button switch provided on said circuit board and corresponding to one of said shafts of said roller, said center button switch being activated to roll the scroll bar when said roller has been pressed;said dents and bumps being pushed by said supporting member when said roller is rolled such that a lifting and falling feeling is fed back to a user.