Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2000-06-30
2003-03-25
Saras, Steven (Department: 2675)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S172000, C200S00600C
Reexamination Certificate
active
06538639
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a multi-direction input device capable of fetching a sensing signal which is generated by actuating a lever member inclinably supported by a case and corresponds to an amount of inclination of the lever member.
2. Description of the Related Art
FIGS. 8
to
10
are views explaining a conventional art of this type of a multi-direction input device. In the figures, the multi-direction input device is mainly composed of a box-shaped frame member
51
, which has an upper plate section through which a circular insert hole
51
a
is formed and an open lower surface, two rotary type variable resistors
52
mounted on a side plate section of the frame member
51
, first and second association members
56
and
59
, which overlap each other in an intersecting state and are suspended in the frame member
51
, a lever member
62
, which passes through the first and second association members
56
and
59
and projects from the insert hole
51
a
of the frame member
51
, a return spring
71
for automatically returning the lever member
62
to its original position, a holder member
68
for holding the return spring
71
, and a lid plate
72
for covering the open lower surface of the frame member
51
.
The frame member
51
is formed by bending a flat metal sheet and has confronting pairs of side wall sections through which a pair of locking holes
51
b
and
51
d
and a pair of locking holes
51
c
and
51
e
are formed, respectively. The rotary type variable resistors
52
are mounted on the outer wall surfaces of the side wall sections having the locking holes
51
c
and
51
d
formed therethrough, respectively. As shown in
FIG. 9
, a resistance value of each rotary type variable resistor
52
is varied in such a manner that the rotation of a shaft
54
held through the shaft hole
53
a
of a mounting frame
53
causes a not shown slider, which is caulked on a rotary plate
54
a
, to slide on a resistor plate
55
.
The first association member
56
includes an arch-shaped base section
57
, and mounting sections
58
disposed on both the sides of the base section
57
. The base section
57
includes a hole
57
a
formed therethrough so as to extend in the lengthwise direction thereof, and a shaft hole
58
a
is formed through each mounting section
58
. Then, the first association member
56
is turnably suspended in the frame member
51
in such a manner that it is supported by the frame member
51
with both the mounting sections
58
locked in the pair of locking holes
51
c
and
51
e
. The shaft
54
of one of the rotary type variable resistors
52
is inserted into the shaft hole
58
a
of the mounting section
58
locked in the locking hole
51
c
under pressure.
The second association member
59
includes a columnar base section
60
whose central portion is swelled, and mounting sections
61
disposed on both the ends of the base section
60
. A hole
60
a
, which extends in the lengthwise direction of the base section
60
, and an inserting hole
60
b
, which intersects the hole
60
a
, are formed through the swelled portion of the base section
60
, respectively, and a shaft hole
61
a
is formed through one of the mounting sections
61
. Then, the second association member
59
is turnably suspended in the frame member
51
in a state in which it overlaps the first association member
56
in an intersecting state in such a manner that it is supported by the frame member
51
with both the mounting sections
61
locked in the pair of locking holes
51
b
and
51
d
. The hole
57
a
confronts the hole
60
a
at the portion where the first association member
56
overlaps the second association member
59
, and the shaft
54
of the other of the rotary type variable resistors
52
is inserted into the shaft hole
61
a
of the mounting section
61
locked in the locking hole
51
d
under pressure.
The lever member
62
includes a rectangular support section
63
, a shaft section
64
projecting from the upper and lower ends of the support section
63
, and a disc-shaped spring receiver
65
located at a lower portion of the support section
63
and formed integrally with the shaft section
64
, and the support section
63
has a through hole
63
a
formed therethrough. Then, the lever member
62
is inclinably supported by the frame member
51
through the second association member
59
in such a manner that the shaft section
64
is inserted into the holes
57
a
and
60
a
of the first and second association members
56
and
59
, and a round pin
66
, which has been inserted from the inserting hole
60
b
of the second association member
59
, is inserted into the through hole
63
a
. Further, a knob
67
is secured to the upper end of the shaft section
64
projecting from the insert hole
51
a
of the frame member
51
.
The holder member
68
includes a cup-shaped spring receiver
69
, and a cylindrical boss section
70
which stands on the inner bottom surface of the spring receiver
69
. As shown in
FIG. 9
, the spring receiver
69
is accommodated in the frame member
51
with a return spring
71
, which is composed of a conical coil spring, accommodated in the spring receiver
69
and with the lower end of the shaft section
64
of the lever member
62
inserted into the boss section
70
. In the above arrangement, the upper end of the return spring
71
abuts the spring receiver
65
of the lever member
62
.
The lid plate
72
is formed of a flat metal sheet and has a rectangular shape and its mounting pieces
72
a
are suitably secured to the lower end of the frame member
51
so as to close the lower surface thereof. Then, the spring receiver
69
of the holder member
68
is elastically abutted against the lid plate
72
by the elastic force of the return spring
71
. The lever member
62
is held by the elastic abutment at an initial position which is vertical to the lid plate
72
shown in
FIG. 9
, whereby a clearance t is formed between the upper end of the boss section
70
of the holder member
68
and the spring receiver
65
of the lever member
62
.
Next, a method of assembling the multi-direction input device arranged as described above will be described. First, the lever member
62
is inserted into the hole
60
a
of the second association member
59
from the upper end thereof, and the round pin
66
is inserted into the through hole
63
a
from the inserting hole
60
b
so as to assemble the lever member
62
and the second association member
59
. Then, the lever member
62
is inserted into the hole
57
a
of the first association member
56
from the upper end side thereof so that first association member
56
overlaps the second association member
59
in an intersecting state, whereby the lever member
62
and the first and second association members
56
and
59
are arranged as a unit. Thereafter, the unit is inserted into the frame member
51
from the open lower surface thereof with the lower ends of the side wall sections of the frame member
51
slightly pushed externally and widened, the upper end of the shaft section
64
is caused to project from the insert hole
51
a
, the side wall sections of the frame member
51
are returned inwardly, and the first and second association members
56
and
59
are suspended by the frame member
51
with the mounting sections
58
and
61
locked in and supported by the locking holes
51
b
to
51
e
while adjusting a bending angle of the side wall sections with respect to an upper plate section.
Next, the knob
67
is secured to the lever member
62
, the two rotary type variable resistors
52
are mounted on the side wall sections of the frame member
51
, then the return spring
71
is accommodated in the spring receiver
69
of the holder member
68
, the shaft section
64
of the lever member
62
is inserted into the boss section
70
, and the holder member
68
is accommodated in the frame member
51
. Thereafter, the mounting pieces
72
a
are suitably secured to the lower end of the frame member
51
,
Alps Electric Co. ,Ltd.
Awad Amr
Brinks Hofer Gilson & Lione
Saras Steven
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