Computer graphics processing and selective visual display system – Display peripheral interface input device
Reexamination Certificate
2000-05-11
2003-01-14
Hjerpe, Richard (Department: 2674)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Reexamination Certificate
active
06507334
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an input device for controlling screen scroll on a display by operating rotationally a rotation member.
2. Description of the Related Art
Input devices of this type for controlling screen scroll on a display by operating rotationally a rotation member of a rotational electrical component have been known heretofore.
A rotary encoder is exemplified as the above-mentioned rotational electrical component for description of the input device according to the conventional art with reference to
FIG. 20
to FIG.
23
.
The input device comprises a rotary encoder
41
fixed to a circuit board
54
, the rotary encoder
41
comprises a rotation member
46
having a detection target, a support member
42
having a detector, a moderation plate
52
that elastically contacts with the rotation member
46
, and a mounting plate
53
for holding the rotation member
46
, support member
42
, and moderation plate
52
together. The rotation member
46
is rotatably supported by a fixing member comprising the support member
42
, moderation plate
52
, and mounting plate
53
.
The support member
42
is formed as a pentagonal base board consisting of insulative synthetic resin, has an fitting hole
43
formed at the center thereof, and provided with a detector
44
comprising three conductive metal elastic pieces
44
a
,
44
b
, and
44
c
and terminals
45
a
,
45
b
, and
45
c
electrically connected to the conductive metal elastic pieces
44
a
,
44
b
, and
44
c
formed by insert molding.
The rotation member
46
, which is comprised of a disk consisting of insulative synthetic resin material, has a rotation shaft
47
at the center thereof formed in a piece, the rotation shaft
47
has a flat area on the inside circumference surface on one end, and a hole
48
to which an operation shaft
60
described hereinafter is to be inserted is formed so as to extend in the rotation shaft line R direction and so as to penetrate to the other end of the rotation shaft
47
. To avoid contact with the operation shaft
60
when the operation shaft
60
is inclined, the other end side of the hole
48
is formed so as to have a large diameter portion
48
a
having a larger diameter than the one end. A ring-shaped conducting plate (not shown in the drawing) is embedded on the rotation member
46
, a plurality of conducting portions
49
, which are a part of the conducting plate, are projected from the surface of the rotation member
46
and located at regular intervals on concentric circumferences round the center of the rotation shaft
47
for serving as detection targets
50
. On the back side of the rotation member
46
, and radial ridges
51
comprising a plurality of ridges that extends radially from the rotation shaft
47
are formed on the entire circumference. The one end of the rotation shaft
47
of the rotation member
46
is inserted into the fitting hole
43
of the support member
42
so that the plurality of conducting portions
49
are brought into slidable contact with three conductive metal elastic pieces
44
a
,
44
b
, and
44
c.
The moderation plate
52
is formed by press working of a metal sheet spring material, and has a projection
52
that is in contact with the radial ridges
51
of the rotation member
46
at the end.
The mounting plate
53
, which is formed by bending both sides of a metal rectangular plate to be formed into a C-shaped cross section, has four pawls
53
a
, a pair of mounting legs
53
b
, and an fitting hole
53
c
formed by press burring work. The mounting plate
53
, to the back side of which the rear end of the moderation plate
52
is fixed, is located on the back side of the rotation member
46
, the other end of the rotation shaft
47
is inserted into the fitting hole
53
c
and four pawls
53
a
are folded to thereby hold the rotation member
46
, support member
42
, and moderation plate
53
tightly together, and the projection
52
a
of the moderation plate
52
is positioned in the groove of the radial ridges
51
of the rotation member
46
.
Thereby, the above-mentioned fixing member comprising the support member
42
, moderation plate
52
, and mounting plate
53
is formed, and the rotation member
46
is supported by the fixing member rotatably by means of the rotation shaft
47
inserted into the fitting holes
43
and
53
c
. The plurality of conducting portions
49
and detection targets
50
constitute a pulse signal generating unit for generating the pulse signal concomitantly with rotation of the rotation member
46
.
On the other hand, the circuit board
54
has terminal insertion holes
54
a
, fixing holes
54
b
, and a relief hole
54
c
, and a push button switch
55
is fixed at the position that faces to the terminal insertion holes
54
a
and the fixing holes
54
b
with interposition of the relief hole
54
c
. In the structure of the push button switch
55
, a body
56
fixed and connected to the circuit board
54
is provided with an actuator
56
a
, a coil spring
57
is mounted on the one end of the body
56
, and a shaft support member
58
having a slotted hole
58
a
with a top open end at the other end of the body
56
is formed.
The rotary encoder
41
, which has the structure as described herein above, is fixed to the circuit board
54
by soldering the terminals
45
a
,
45
b
, and
45
c
which are inserted through the terminal insertion holes
54
a
and fixing holes
54
b
, and the pair of mounting legs
53
c
at the position that faces to the push button switch
55
, and thus the terminals
45
a
,
45
b
, and
45
c
are electrically connected to the circuit board
54
.
A disk operation body
59
is disposed between the rotary encoder
41
and the push button switch
55
, a portion of which disk operation body
59
is positioned in the relief hole
54
c
, both ends of an operation shaft
60
that penetrates through the center of the operation body
59
fixedly are inserted into the hole
48
of the rotation member
46
and the slotted hole
58
a
of the push button switch
55
respectively. The operation shaft
60
is rotatable together with operation body
59
and the rotation member
46
, and supported so as to be pivoted only in the vertical direction (directions of arrows B and C) of the slotted hole
58
a
on the one end of the rotation shaft
47
.
A bush
61
is fit on the one end of the operation shaft
60
, the coil spring
57
and the actuator
56
a
are in contact with the bush
61
to thereby hold the operation shaft
60
in parallel to the circuit board
54
, the bush
61
faces to the body
56
of the push button switch
55
apart with interposition of a distance H, and the one end of the body
56
is disposed apart from the one end of the rotation shaft
47
of the rotation member
46
with interposition of a distance L
1
.
When an operator rotates the operation body
59
with a finger in this state, the rotation member
46
is rotated in the same direction as that of the operation body
59
together with the operation shaft
60
while the projection
52
a
of the moderation plate
52
is being brought into elastic contact with the ridges and grooves of the radial ridges
51
alternately to cause clicking sensation, three conductive metal elastic pieces
44
a
,
44
b
, and
44
c
repeats connection and disconnection with the plurality of conducting portions
49
concomitantly with rotation of the rotation member
46
to generate pulse signals, and pulse signals are sent out from the terminals
45
a
,
45
b
, and
45
c
as the rotation magnitude detection signal of the operation body
59
and supplied to the circuit board
54
. At that time, because the flat side of the operation shaft
60
is fitted to the flat area provided on the inside circumferential surface of the hole
48
, it is possible to connect the rotation member
46
with the operation shaft
60
without rattle, therefore the rotation of the operation body
59
is transmitted to the rotation member
46
consistently.
When an operator pushes the operation body
59
with
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Hjerpe Richard
Laneau Ronald
LandOfFree
INPUT DEVICE FOR ELIMINATING LOAD LOADED ON CONNECTION... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with INPUT DEVICE FOR ELIMINATING LOAD LOADED ON CONNECTION..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and INPUT DEVICE FOR ELIMINATING LOAD LOADED ON CONNECTION... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3018114