Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2000-11-01
2003-02-18
Hjerpe, Richard (Department: 2674)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S156000, C345S157000, C345S164000, C345S165000, C345S167000, C345S166000
Reexamination Certificate
active
06522321
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a roller retainer for the third axis of a mouse, and especially to roller retainer, thereby, the roller seat is fixed the upper cover, and thus the space of the circuit board will not be occupied. By the elasticity of the roller seat, the roller seat can move upwards and downwards without needing any spring. Furthermore, it can be assembled easily.
BACKGROUND OF THE INVENTION
Nowadays, the mouse is a necessary device to a computer. Since the mouse can be operated easily and learnt conveniently, it is widely used. Furthermore, in the structure of a mouse, a track ball is installed at the bottom of the mouse. If the user holds the mouse and move it on a table, then the track ball will rotate and thus the cursor will move on a screen. However, the development of software is faster and faster, the design of mouse must be improved with the development of mouser. Furthermore, three dimensional software are developed, while mice are two dimensional, which can not meet the requirement of the software. In order to solve the problem of three-dimensional software, and research of mice with a third input axis is performed. Thus, various novel mice are generated.
Moreover, a prior art mouse with a third axis is illustrated in FIG.
1
. The mouse has an upper cover (not shown), a seat
1
a
, a roller seat
2
a
, etc. the seat
1
a
includes a housing
10
a
, a track ball unit
11
a
(including a track ball
110
a
, a photo wheel
111
a
, and other connecting units), and a circuit board
12
a
. The roller seat
2
a
includes a roller
20
a
, a shaft
21
a
firmly secured to the circuit board
12
a
. A spring
22
a
is engaged to the shaft
21
. The spring
22
a
serves to move the roller
20
a
upwards or downwards. A plurality of guide tracks
23
a
are protruded from the seat
1
a
. The guide tracks are placed at the left and right sides of the shaft
21
a
. Each of the guide track is installed with a light guide hole
24
a
. One side of one hole
24
a
is installed with an emitting element
120
a
, while one side of another hole
24
a
is installed with a receiving element
121
a
. The emitting element
120
a
and receiving element
121
a
are connected the circuit control units of the circuit board
12
a
. The circuit board
12
a
is installed with a left button switch
122
a
, a middle button switch
123
a
, a right button switch
124
a
. These switches
122
a
,
123
a
, and
124
a
are connected to the circuit control unit.
Although the aforesaid mouse may solve the problems of third axis, the application of the space in the circuit board is too complex, and thus has the following advantages:
1. In the prior art, the roller seat is installed on the seat, the shaft and guide track and other elements are necessary to be installed on a circuit board. Therefore, the usable area on the circuit board is reduced. Since the space is narrow, horizontal chips must be used. While these chips have higher cost and can not be prepared easily.
2. The spring serves to provide an elasticity to the roller seat for restoring, but this increases the complex in assembly and the efficiency in assembly is effected.
Therefore, it is appreciated that the prior art structure has some defects which are necessary to be improved.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide a roller retainer for the third axis of a mouse, wherein a roller seat is fixed to an upper cover and an upper button. No space of the circuit board is occupied. A most common vertical chip serves to fix in the longitudinal direction through an IR module so that the same parts identical the photo wheel can be used, therefore, the cost is low and the material can be prepared easily.
Another object of the present invention is to provide a roller retainer for the third axis of a mouse, wherein by the plastic elasticity of the roller seat, a restoring force is formed, therefore, the roller seat may move upwards or downwards without needing spring.
To achieve the abovesaid object, the present invention provides a roller retainer for the third axis of a mouse comprises a seat, an upper cover and a roller seat. The seat has a housing, an upper cover, and a circuit board, and other components. The circuit board is installed with a left button switch, a middle button switch, a right button switch and an IR module seat. The roller seat has a long plate shape. The middle portion at the front end of the roller seat is installed with a via hole. The via hole is placed with the roller. A rear end of the roller is a groove which serves to be buckled in the tenons at the rear inner surface of the key. The connection is a fixing end and further the roller seat is like a suspending arm. Moreover, the roller seat has the function of plastic resilience and thus no spring is necessary. Therefore, the cost for assembling a spring is saved. The roller seat is installed on the upper cover. While the other element is installed on the seat. Therefore, the original function is retained, moreover, the space of the circuit board is not occupied. A most common vertical chip serves to fix in the longitudinal direction through an IR module so that the same parts identical the photo wheel can be used. Thus, the cost is low and material can be prepared easily.
The seat includes a microswitch and an IR module seat (infrared transceiver module seat). The upper cover includes a cover and a key body; and the cover is combined with the casing of the seat. The roller seat has a rear end fixed to a housing of the mouse and is like a suspending arm, and the roller seat is configured with respect to the microswitch of the seat and is spaced therewith. By aforesaid structure, the roller seat will not occupy any space of a circuit board on the seat, and by the plastic elasticity of the roller seat, and roller seat moves upwards or downwards.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when reading in conjunction with the appended drawing.
REFERENCES:
patent: 5912661 (1999-06-01), Siddiqui
patent: 6188393 (2001-02-01), Shu
patent: 6337680 (2002-01-01), Hamaji
patent: 6340966 (2002-01-01), Wang et al.
Chen Le-Tien
Lin Chien Pang
Dexin Corporation
Hjerpe Richard
Nguyen Jennifer T.
Rosenberg , Klein & Lee
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