Supports – Brackets – Adjustable
Reexamination Certificate
2001-08-10
2003-08-05
Chin-Shue, Alvin (Department: 3634)
Supports
Brackets
Adjustable
C248S923000, C248S279100
Reexamination Certificate
active
06601810
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus for positioning a screen of a monitor, and in particular, to an apparatus for positioning a screen of a monitor that can not only function as a support for the monitor, but also adjust the screen of the monitor upward, downward, to the left and right directions to conform to viewing angle. The present invention particularly relates to an apparatus for positioning the screen of a light-weight monitor, e.g., of an LCD monitor.
2. Description of the Related Art
FIG. 1
is a perspective view of a conventional apparatus for positioning a screen of a monitor.
Referring to
FIG. 1
, the conventional apparatus for positioning the screen of the monitor comprises a lower part supporting plate
11
for supporting a plurality of constitutional elements; a rotating body fixing plate
12
fixed onto the lower part supporting plate
11
and having a shape that allows rotation of a monitor; a swiveling shaft
13
installed to be rotatable in horizontal directions at a central aperture of the rotating body fixing plate
12
; a supporting column
14
fixed onto the swiveling shaft
13
; a pair of first brackets fixed on an upper end of the supporting column
14
; a tilting shaft
16
rotatably inserted to the first bracket
15
; a second bracket
17
fixed on the tilting shaft
16
for rotating around the first bracket
15
; and a monitor fixing plate
18
fixed on the second bracket
17
and a rear surface of the monitor.
FIG. 2
is a cross-sectional view of A-A′ in FIG.
1
. Referring to
FIGS. 1 and 2
, the swiveling shaft
13
is inserted to the rotating body fixing plate
12
. An end portion of the swiveling shaft
13
houses a nut
21
. A sliding washer
23
is inserted between the rotating body fixing plate
12
and the nut
21
, so that the swiveling shaft
13
can rotate in horizontal directions around the rotating body fixing plate
12
.
An angle adjusting plate
22
having a rotating stopper groove
22
a
on an external periphery thereof is provided on an upper side of the rotating body fixing plate
12
, to which an end portion of the swiveling shaft
13
is inserted so as to limit rotation of the swiveling shaft
13
.
According to the conventional apparatus for positioning screen of a monitor constructed as shown in
FIGS. 1 and 2
, the first bracket and the second bracket coupled with the supporting column
14
and the monitor fixing plate
18
rotate in vertical direction by means of the tilting shaft
16
. As a consequence, the screen tilts upward and downward. On the other hand, the monitor fixing plate
18
cannot tilt more than a predetermined angle due to a stopper
17
a
provided on the second bracket
17
.
The swiveling shaft
13
is rotatably fixed onto the rotating body fixing plate
12
by means of the nut
21
. The washer
23
is inserted between a head of the nut
21
and the rotating body fixing plate
12
. The angle adjusting plate
22
is inserted between the rotating body fixing plate
12
and the swiveling shaft
13
. The stopper groove
22
a
is formed on a peripheral surface of the angle adjusting plate
22
. Both ends of the stopper groove
22
a
are adjacent to the rotating stopper
12
a
formed on the rotating body fixing plate
12
, so that the swiveling shaft
13
cannot rotate any further.
According to the conventional apparatus for positioning screen of a monitor described above, however, a user needs to position the screen by gripping the screen unit of the monitor. In that case, the tilting can be freely moved due to a short distance between the monitor and the tilting shaft
16
, while the monitor is not easily rotated in horizontal directions due to the far distance between the monitor and the swiveling shaft
13
.
To be specific, by reference to
FIG. 3
, the monitor comprises a screen unit
33
for displaying image, a supporting column
32
for supporting the screen unit, and a supporting plate
31
for supporting the supporting column
32
.
To describe the operation based on the above construction, the monitor can be easily positioned in a vertical direction because of the horizontal distance H between the rotating axis (the drawing reference numeral
16
in
FIG. 1
) and the screen unit
33
. Meanwhile, since the vertical distance V between the swiveling shaft
13
and the screen unit
33
is as long as the supporting column
32
, strong friction occurs on the sliding washer
23
and the screen unit is not easily rotated even if a great force is laid on the screen to rotate the screen when the axis is not exactly perpendicular.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide an apparatus for positioning the screen of a monitor that is capable of positioning a monitor in horizontal directions with a slight force.
It is another object of the present invention to provide an apparatus for positioning the screen of a monitor having a compact structure that can be easily assembled.
To achieve the above objects, there is provided an apparatus for positioning the screen of a monitor by a user, comprising: a lower bracket provided on an upper end of a monitor supporting column for adjusting a turning angle of a screen; a swiveling unit axially locked with the lower bracket in vertical direction and having a swiveling shaft for rotatable movement; a pair of tilting angle adjusting plates fixed onto an upper end of the swiveling shaft for tilting the screen; a tilting shaft inserted between the tilting angle adjusting plates for moving the screen in a vertical direction; and a tilting unit locked with a rear surface of the monitor for housing both ends of the tilting shaft and including a pair of upper brackets movable in a vertical direction centering around the tilting shaft.
A pair of coil springs are inserted to left and right sides of the tilting shaft, which provide a restoring force so as to rotate the upper bracket upward under a support of the upper brackets and the tilting angle adjusting plates.
First holder grooves are formed on the upper brackets for supporting end portions of the coil springs, and second holder grooves are formed on the tilting angle adjusting plates for supporting internal end portions of the coil springs.
An angle adjusting plate having a turning angle limiting stopper groove on a peripheral surface thereof is provided on an upper portion of the lower bracket to determine limitation of the rotation of the swiveling shaft by being fixed onto the swiveling shaft, and the turning angle limiting stopper is formed on a bent line of the lower bracket so that the angle adjusting plate can be guided to the turning angle limiting stopper groove.
A tilting angle limiting stopper is provided on the other side of the upper bracket, which is fixed onto the screen unit, for determining limitation of a tilting angle of the monitor, and a tilting angle limiting stopper groove is formed on upper ends of the tilting angle adjusting plates for guiding the tilting angle limiting stopper.
Screw units are formed on both end portions of the tilting shaft so as to be locked with the washer and the nut by being inserted to the upper brackets and the tilting angle adjusting plates.
An upper protrusion of an oval shape is formed on an upper end portion of the swiveling shaft so as to be inserted to the tilting angle adjusting plates, and an upper portion protrusion inserting groove is formed on one tilting angle adjusting plate so that the tilting angle adjusting plates and the swiveling shaft can rotate together.
REFERENCES:
patent: 5022778 (1991-06-01), Lu
patent: 6018847 (2000-02-01), Lu
patent: 6164611 (2000-12-01), Kuhnke
patent: 6244553 (2001-06-01), Wang
patent: 6285339 (2001-09-01), McGill
patent: 6366452 (2002-04-01), Wang et al.
Chin-Shue Alvin
Jacobson & Holman PLLC
LG Electronics Inc.
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