Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
1999-08-04
2003-07-01
Ramirez, Nestor (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S090000
Reexamination Certificate
active
06586854
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a vibrating apparatus and a simulator apparatus using the vibrating apparatus.
2. Description of the Related Art
A simulator apparatus, for example, a driving simulation device comprises a simulated driving room
120
inclined and moved by a motion system
130
provided on a floor plane
12
in a building
10
, a display system
110
for displaying a virtual view situation and the like as schematically shown in FIG.
9
.
The display system
110
includes a projector
111
installed on the upper part of the building
10
behind the simulated driving room
120
, and a screen
112
for provided in the building
10
ahead of the simulated driving room
120
for projecting a picture emitted from the projector
111
.
The simulated driving room
120
is formed by imitation of a real car body, for example, and includes a simulated operating device such as a seat, a steering wheel device and the like which are modeled after a real car such that a user can get on and off from a door (not shown).
The motion system
130
has a plurality of actuators
140
, each of which has both ends movably supported between a base table
131
fixed to the floor plane of the building
10
and a motion table
132
supporting the simulated operating room
120
, and serves to give various motions to the simulated operating room
120
fixed and supported on the motion table
132
by selectively extending or retracting each actuator
140
and to give vibrations to the simulated operating room
120
by means of a vibration generating device (not shown) provided in the simulated operating room
120
.
The actuator
140
of the motion device
130
has a first universal joint
141
fixed to the base table
131
and a second universal joint
142
fixed to the motion table
132
, for example, as shown in FIG.
6
. An extension/retraction unit
144
is provided between the first universal joint
141
and the second universal joint
142
.
The extension/retraction unit
144
is formed by a ball screw mechanism including a screw shaft
146
having a base end rotatably supported, through a bearing
145
, on a casing
143
provided in the first universal joint
141
, a cylindrical sleeve
147
having a base end provided in the second universal joint
142
, and a ball
148
fitted between a spiral ball groove
146
a
formed on the outer periphery of the screw shaft
146
and a spiral ball groove
147
a
formed on the inner periphery of the tip of the sleeve
147
.
The casing
143
provided in the first universal joint
141
installs and supports an electric motor
150
which is rotatable in normal and reverse directions and has a rotator
151
provided in parallel with the screw shaft
146
, and accommodates a power transmission mechanism
155
for transmitting power from the electric motor
150
to the screw shaft
146
.
The power transmission mechanism
155
comprises a driving gear
156
fixed to the rotator
151
of the electric motor
150
, a driven gear
157
fixed to the base end of the screw shaft
146
, and a reduction gear
158
rotatably supported on the casing
143
by means of a support device (not shown) and provided between the drive gear
156
and the driven gear
157
as shown in
FIG. 6C
taken along the line b—b of FIG.
6
A.
By the rotation of the electric motor
150
in the normal or reverse direction, the screw shaft
146
is rotated in the normal or reverse direction with a speed reduction according to the parameters of gears through the driving gear
156
, reduction gear
158
and driven gear
157
of the power transmission mechanism
155
. Consequently, the sleeve
147
screwed with the ball grooves
146
a
and
147
a
and the ball
148
is moved so that the screw shaft
146
is retracted and extended in a retracted position shown in FIG.
6
A and an extended position shown in FIG.
6
B.
FIG. 7
shows the actuator
140
according to another aspect. Corresponding portions in
FIG. 7
have the same reference numerals as those in FIG.
6
and their detailed description will be omitted. As shown in
FIG. 7C
taken along the line c—c of
FIG. 7A
, the power transmission mechanism
155
comprises a driving sprocket
159
fixed to the rotator
151
of the electric motor
150
, a driven sprocket
160
fixed to the base end of the screw shaft
146
, and a cog belt
161
wound between the driving sprocket
159
and the driven sprocket
160
.
By the rotation of the electric motor
150
in the normal or reverse direction, the screw shaft
146
is rotated in the normal or reverse direction with a speed reduction according to the parameters of gears of the driving sprocket
159
and the driven sprocket
160
through the driving sprocket
159
, the cog belt
161
and driven sprocket
160
of the power transmission mechanism
155
. Consequently, the screw shaft
146
is retracted and extended in a retracted position shown in FIG.
7
A and an extended position shown in FIG.
7
B.
FIG. 8
shows the actuator
140
according to yet another aspect. While corresponding portions in
FIG. 8
have the same reference numerals as those in FIG.
6
and their detailed description will be omitted, the actuator
140
forms the screw shaft
146
integrally with the rotator
151
of the electric motor
150
, thereby removing the power transmission mechanism
151
.
By the rotation of the electric motor
150
in the normal or reverse direction, the screw shaft
146
is rotated in the normal or reverse direction. Consequently, the screw shaft
146
is retracted and extended in a retracted position shown in FIG.
8
A and an extended position shown in FIG.
8
B.
By selectively extending or retracting the actuators
140
provided between the base table
131
and the support table
132
, the motion system
130
can give various motions to the simulated driving room
120
installed and supported on the support table
132
of the simulated driving room.
In the actuator
140
shown in
FIG. 6
, however, the power transmission mechanism
155
comprising the driving gear
156
, the reduction gear
158
, the driven gear
157
, the support device for supporting the reduction gear
158
on the casing
143
and the like is provided between the base end of the screw shaft
146
and the electric motor
150
. Therefore, the actuator
140
has a complicated structure. In addition, the amount of movement of the sleeve
147
screwed to the screw shaft
146
by the power transmission mechanism
155
provided on the base end of the screw shaft
146
is limited so that the actuator
140
cannot be fully retracted. Furthermore, since the electric motor
150
is biased against the screw shaft
146
, the tilt angle of the actuator
140
to the base table
131
is limited so that the degree of freedom of design is restricted.
As a result, the height h of the motion system
130
shown in
FIG. 9
is increased so that the simulated driving room
120
is provided in a comparatively high position. In order to project a picture emitted from the projector
111
installed on the upper part of the building
10
behind the simulated driving room
120
without the influence of the simulated driving room
120
on the screen
112
provided on the simulated driving room
120
, therefore, it is necessary to place the projector
111
in a high position. Consequently, the size of the building
10
is increased.
In order to avoid the influence of the simulated driving room
120
by reducing the size of the building
10
and placing the projector
111
in a comparatively low position, there has been a method for moving upward the lower end of the screen
112
on which a picture is projected, thereby reducing the size of the screen
112
. However, the size of the picture such as a road, a circumferential landscape and the like which are projected on the screen
112
during virtual running, in particular, a vertical range is limited. Consequently, it is hard to sufficiently give virtual reality to a user in the simulated driving room
120
.
Moreover, the amount of retraction of the actuator
Kawaguchi Takahiro
Nozawa Masatsugu
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Perez Guillermo
Ramirez Nestor
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