Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1999-02-11
2001-06-12
Hjerpe, Richard (Department: 2774)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S156000, C345S165000
Reexamination Certificate
active
06246392
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an improved structure of third-axis input device for mouse, which is formed in an integral style to save lost and simplify the assembling operation, the roller of the input device has an abutting wheel and a clamping means with resilient movement to provide the user with segmentation felling when operating the roller.
BACKGROUND OF THE INVENTION
As shown in
FIG. 5
, the conventional third-axis input device for mouse generally comprises a supporting plate
202
upon the base
201
of the mouse
20
, a shaft
205
for supporting the roller
203
and the encode wheel
204
and arranged on the supporting plate
202
. The roller
203
is such arranged the the top end thereof emerge from the top surface of the mouse
20
. Moreover, an IR (infrared) module
206
is arranged beside the encode wheel
204
. The user rotates the roller
203
to drive the encode wheel
204
and generates modulation signal, the IR module
206
transmits the module signal to realize the third-axis input function.
However, in above-mentioned third-axis input device, the roller
203
and the encode wheel
204
are separate components axially arranged on the shaft
205
such that separate molding dies are required for the roller
203
, the encode wheel
204
and the shaft
205
. The cost is increased and the assembling become complicated. Moreover, the roller
203
is rotated continuously and smoothly without stop point, such that it is hard for user to feel the moving location of the cursor.
It is an object of the present invention to provide an improved third-axis input device. To achieve the object, the inventive third-axis input device is integrally formed and arranged between two racks on the mouse base, which have a predetermined distance therebetween. The third-axis input device comprises a roller, two shafts each extending from lateral side of the roller and arranged on the rack, an encode wheel formed integrally on the first shaft and placed within an IR module of the mouse, the second shaft is corresponding to a micro switch. An abutting wheel is formed integrally with the first shaft and has a plurality of dents and bumps on the rim thereof and having a predetermined separation. A supporting member with elastic displacement is arranged on the base and corresponding to the abutting wheel. The abutting wheel is pushed by the supporting member when the user rotates the roller. The user can feel the lifting movement of the roller and has better feeling for coordinate movement.
It is another object of the present invention to provide an improved third-axis input device, wherein the roller, encode wheel and abutting wheel of the inventive device are integrally formed, thus save cost and simplifies the assembling.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
REFERENCES:
patent: 5635956 (1997-06-01), Tak
patent: 5912661 (1999-01-01), Siddiqui
patent: 5914705 (1999-01-01), Johnson et al.
Dinh Duc
Hjerpe Richard
Rosenberg , Klein & Lee
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