Supports – Stand and bracket – Having vertically adjustable stand
Reexamination Certificate
2003-03-28
2004-03-09
Braun, Leslie A. (Department: 3632)
Supports
Stand and bracket
Having vertically adjustable stand
C248S404000
Reexamination Certificate
active
06702238
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a supporting device, more particularly to an adjustable supporting device for a display panel.
2. Description of the Related Art
FIG. 1
illustrates a conventional display device
300
that includes a display panel
31
, a supporting member
33
for supporting the display panel
31
, and a coupling member
32
connected to the display panel
31
and coupled pivotally to the supporting member
33
. Referring to
FIG. 2
, the supporting member
33
includes a stationary outer tube
331
, a movable rod body
333
, and a spiral spring
38
. The rod body
333
is movably extended into the outer tube
331
and is in friction engagement with the outer tube
331
. The rod body
333
has an upper portion (not shown) coupled to the coupling member
32
, and a lower portion
334
formed with an inner recess
335
and a radial passage groove
336
that is communicated with the inner recess
335
. The spiral spring
38
has a coupling portion
383
that engages an engaging groove
332
formed in an upper end of the outer tube
331
, and a spiral portion
381
disposed in the inner recess
336
. As such, the spiral spring
38
provides a biasing force such that an equilibrium state among the biasing force, a friction force between the outer tube
331
and the rod body
333
, and the combined weight of the display panel
31
and the rod body
333
can be achieved so as to maintain the rod body
333
at a desired extended position relative to the outer tube
331
.
However, since the spiral spring
38
is not positioned in the inner recess
336
, the spiral spring
38
easily wobbles during adjustment of the height of the display panel
31
such that smooth sliding movement of the rod body
333
cannot be ensured, thereby resulting in inconvenience during use.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide an adjustable supporting device which can overcome the aforesaid drawback associated with the prior art.
According to the present invention, there is provided an adjustable supporting device for a display panel. The adjustable supporting device comprises:
a stationary supporting member having a lower base portion, and an upper tube portion disposed uprightly on the lower base portion and extending in a first direction, the upper tube portion having an upper end, a lower end connected to the lower base portion, and an inner surface;
a movable rod member movably extended into the upper tube portion and in friction engagement with the upper tube portion, the rod member including a rod body that has an upper portion adapted to be coupled to the display panel, and a lower portion formed with an inner recess and a radial passage groove communicated with the inner recess, and a mounting cap mounted on the lower portion and cooperating with the inner recess so as to confine a receiving space that is accessible through the passage groove; and
a biasing member having a straight coupling portion passing through the passage groove in the rod body and coupled to the inner surface of the upper tube portion of the stationary supporting member, and a spiral portion connected to the coupling portion and disposed in the receiving space, the biasing member providing a biasing force such that an equilibrium state among the biasing force, a friction force between the stationary supporting member and the movable rod member, and the combined weight of the display panel and the movable rod member is achieved so as to maintain the movable rod member at a desired extended position between upper and lower limit positions relative to the tube portion of the stationary supporting member;
wherein the mounting cap is formed with a positioning unit for positioning the spiral portion of the biasing member in the receiving space so as to prevent the spiral portion of the biasing member from wobbling in a second direction transverse to the first direction.
REFERENCES:
patent: 4690362 (1987-09-01), Helgeland
patent: 6233139 (2001-05-01), Hamon
patent: 6367756 (2002-04-01), Wang
patent: 6392873 (2002-05-01), Honda
patent: 6517040 (2003-02-01), Wen
patent: D478088 (2003-08-01), Hamouz
patent: 2003/0075649 (2003-04-01), Jeong et al.
patent: 270517 (1996-02-01), None
Braun Leslie A.
Schulterbrandt Kofi
Top Victory Electronics Co., Ltd.
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