Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02653900 2008-12-09
Writing desk of drawer connecting with the
arms support board
Abstract of instruction manual
[Para 1]This invention involves a kind of writing desk whose drawer
connects with the arms support board. There are set up with the big drawers
that can be
pushed and pulled, and there are set up with the arms support boards
articulated with
the side of long horizontal edge place on the top end of internal plate
surface of drawer
panel of big drawer; or there are set up with the small drawers that can be
pushed and
pulled at the left, right side of underside of desk panel, there are set up
with the left
arms support board and the right arms support board at the top end of internal
plate
surface of opposite drawer side plate of left, right small drawers; the left,
right arms
support boards are opposite by the internal concave form arc shaped side and
are
articulated each other. Thus, the turnover of the arms support board does not
occupy
the lower space of drawer, and at the same time the user can support on the
arms
support board or movable backing plate with pairs of elbow and forearm at one
desk to
operate the computer keyboard or to turn over, write the file conveniently;
Furthermore,
it can make the arms support board be adapt to the need of horizontal desk
panel and
slope desk panel, and the structure is simple and it is easy to use at the
same time.
Technical field
[Para 21This invention involves a kind of writing desk whose drawer connects
with the arms support board. To be specific, it is mainly suitable for the
writing desk in
office and family.
Backp,round technolol4y
[Para 3]As is well known, for the person who works bending over one's desk
on the traditional writing desk for a long time, on one hand because a pair of
elbows
and forearms are supported on the rectangle desk panel to read and write, it
must adopt
the sitting posture of excessively leaning forward, which can cause the
hunchback and
eye myopia; on the other hand it makes the muscles of shoulder back, arm and
wrist be
in the tension condition for a long time because of hanging the elbow to
operate the
keyboard and mouse of the computer, thus causing the shoulder periarthritis,
cervical
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spondylosis etc.
[Para 4]In recent years, there has appeared the desk structure that there
extends
out the arms support board from the edge of desk panel close to one side of
human
body. The arms support board is that there are set up with one internal
concave arc
shaped gap slightly wider than the waist width of human body in the middle of
traditional rectangle desktop. Both sides of internal concave shape protrude
outwards
oppositely. It is call as the arms support board. When the users carry on the
desktop
homework, their upper body above the waist enters the groove part by the desk,
and the
pair of elbows and forearms are supported on the arms support board of both
sides. The
arms support board is helpful for the users to correct the sitting posture, to
decrease the
fatigue, and makes the persons feel comfortable, and is beneficial to persons'
health.
For example, patent of China, ZL89218825.1, ZL92200155.3, ZL97228199.1, they
adopt the fixed type arms support board, simple structure, reliable, however,
the
occupied space of desktop increases, and it is inconvenient for the users to
come in and
go out; For example, patent of China, ZL99213798.5, ZL03239639.2, for the
adopted
turnover-downward foldable arms support board, the occupied space of desktop
reduces, and it is convenient for the users to come in and go out. However,
while
turning over the arms support board, it needs to occupy the lower space of
desktop.
Thus it has limited the utilization of the lower space of the desk panel. For
example.-
Place the drawer, the cupboard and the host case of computer, etc., in
addition, it needs
to add the supporting structure for the arms support board, and by doing so it
can
maintain the dependability of support of arms support board. In addition,
because the
keyboard of the computer is higher than the desktop, the wrist will not
operate the
keyboard unless upwarping it. The users can't support on the arms support
board with a
pair of elbows and forearms and operate the keyboard of the computer and turn
over,
write the files conveniently at one desk,.
Invention content
[Para 5]The purpose of this invention is to improve the existing writing desk
and to offer one a kind of writing desk whose drawer connects with the arms
support
board. Connect the arms support board to the top end of internal plate surface
of
opposite drawer side plate of left, right small drawers of writing desk with
the hinge, or
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connect the left, right arms support board to the top end of internal plate
surface of
opposite drawer side plate of left, right small drawers of writing desk with
the hinge.
And it can turn over upwards by 180 and is supported on the top surface of
drawer
panel or drawer side plate. Through utilizing the function that the big
drawers or two
small drawers can be pushed and pulled under the desk panel of the writing
desk, it can
make the arms support board turn over to the usage status or hiding status
after the big
drawers or two small drawers are pulled out; And utilize the movable backing
board
connected to the upper surface of the arms support board to make a pair of
elbow and
forearm support on the arms support board or the movable backing board, and it
is
convenient not only to turn over and write the files but also to operate the
keyboards
and mice on the desk; It can also make the arms support board be inclined
forward, and
it can utilize the movable wedge-shaped backing board on the arms support
board
insert into between the arms support board and the inclined top surface of
drawer panel
to make the arms support board be in the horizontal status; In addition, it
can also
replace the drawer with the push-pull board. There can connect the arms
support board
with the hinge on the push-pull board.
[Para 6]Technological scheme adopted in this invention:
[Para 7]A kind of writing desk whose drawer connects with the arms support
board, there are set up with the big drawers that can be pushed and pulled
under the
desk panel of writing desk. There are set up with the arms support boards
articulated
with the side of long horizontal edge on the top end of internal plate surface
of drawer
panel of big drawer. The arms support board turns over upward and is supported
on the
top end of the drawer panel, and the upper surface of arms support board and
the
described desk panel are at the same height.
[Para 8]A kind of writing desk whose drawer connects with the arms support
board, there are set up with the small drawers that can be pushed and pulled
at the left,
right side of underside of desk panel of writing desk. There are set up with
one piece of
left arnzs support board and one piece of right arms support board at the top
end of
internal plate surface of opposite drawer side plate of left, right small
drawers; the left,
right arms support boards are opposite by the internal concave form arc shaped
side
and are articulated each other. The left arms support board and right arms
support
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board turn over upward respectively and are supported on the top end of
corresponding
drawer side plate. And the upper surfaces of left, right arms support board
and the
described desk panel is at the same height.
[Para 9]The upper surface of the described arms support board can be connected
with one piece of movable backing board of shape same as the arms support
board with
the removable connecting parts; Or the upper surface of movable backing board
and
the described desk panel is at the same height..
[Para 10]The top end of the described drawer panel is the inclined top surface
of front end inclining downward. There are also set up with the one wedge-
shaped
block on the sliding guide at the rear of the described arms support board.
[Para 111For the top end of internal plate surface of drawer panel of
described
big drawer it can use the hinge that can turn over by 180 to connect the
lateral surface
of long horizontal side place of arms support board.
[Para 12]The described arms support board is separated as one piece of left
half arms support board and one piece of right half arms support board; and
the long
horizontal side of the arms support board is also divided into two sections
and forms
the concave groove shape together with the drawer panel.
[Para 13]There are connected with one waling piece of corresponding length
on the plate surface of long horizontal side of described arms support board.
[Para 14]There are connected with one section of waling piece of
corresponding length respectively on the plate surface of described two
section of long
horizontal side.
[Para 15]There are set up with one keyboard tray inside the two pieces of
drawer side plate of the described big drawer.
[Para 161The described big drawer is kind of push-pull board.
[Para 171There is all the vertical side at the left side of the described left
arms
support board and at the right side of the described right arms support board.
[Para 18]It can use the hinge that can turn over by 180 to connect the
vertical
lateral surface of left, right arms support board at the top end of internal
plate surface
of opposite drawer side plate of described left, right small drawer.
[Para 191There are connected with one piece of vertical slab billet
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respectively on the plate surface of vertical side place of described left,
right arms
support board.
[Para 20]The turnover of the arms support board of this invention does not
occupy the lower space of drawer, and at the same time the user can support
himself on
the arms support board or movable backing plate with pairs of elbow and
forearm at
one desk to operate the computer keyboard or to turn over, write the file
conveniently;
Furthermore, it can make the arms support board be adapt to the need of
horizontal
desk panel and inclined desk panel, and the structure is simple and it is easy
to use at
the same time.
Explanation of attached ftures
[Para 21]Figure 1: Local side section schematic diagram of the first
embodiment of this invention
[Para 22]Figure 2: Non-usage status schematic diagram for arms support board
of the first embodiment of this invention
[Para 23]Figure 3: Figure 2: Usage status schematic diagram for arms support
board of the first embodiment of this invention
[Para 24]Figure 4: Non-usage status schematic diagram for arms support board
of the second embodiment of this invention
[Para 251Figure 5: Usage status schematic diagram for arms support board of
the second embodiment of this invention
[Para 26]Figure 6: Non-usage status schematic diagram for arms support board
of the third embodiment of this invention
[Para 271Figure 7: Usage status schematic diagram for arms support board of
the third embodiment of this invention
[Para 28] Figure 8: Non-usage status schematic diagram for arms support board
of the fourth embodiment of this invention
[Para 29]Figure 9: Usage status schematic diagram for arms support board of
the fourth embodiment of this invention
[Para 30]Figure 10: Non-usage status schematic diagram for arms support
board of the fifth embodiment of this invention
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[Para 31]Figure 11: Usage status schematic diagram for arms support board of
the fifth embodiment of this invention
[Para 32]Figure 12: Local side section schematic diagram of the sixth
embodiment of this invention
[Para 3311Figure 13: Non-usage status schematic diagram for arms support
board of the sixth embodiment of this invention
[Para 34]Figure 14: Usage status schematic diagram for arms support board of
the sixth embodiment of this invention
[Para 35]Figure 15: Non-usage status schematic diagram for arms support
board of the seventh embodiment of this invention
[Para 361Figure 16: Usage status schematic diagram for arms support board of
the seventh embodiment of this invention
[Para 37]Figure 17: Schematic diagram of status of computer keyboard of the
eighth embodiment of this invention
[Para 38]Figure 18: Schematic diagram of status of turning over and writing
files of the eighth embodiment of this invention
[Para 39]Figure 19: Horizontal schematic diagram of usage status for arms
support board of the eighth embodiment of this invention
[Para 40]Figure 20: Non-usage status schematic diagram for arms support
board of the eighth embodiment of this invention
[Para 41]Figure 21: Schematic diagram of status of operating the computer
keyboard of the ninth embodiment of this invention
[Para 42]Figure 22: Schematic diagram of status of turning over and writing
files of the ninth embodiment of this invention
[Para 431Figure 23: Schematic diagram of inclining status of arms support
board of the tenth embodiment of this invention
[Para 44]Figure 24: Schematic diagram of horizontal status of arms support
board of the tenth embodiment of this invention
[Para 45]Figure 25: Local side sectional view when the arms support board of
the tenth embodiment of this invention is not used
[Para 46]Figure 26: Horizontal sectional view when the arms support board of
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the tenth embodiment of this invention is not used
[Para 471Figure 27: Schematic diagram of status of operating the computer
keyboard of the eleventh embodiment of this invention
[Para 48]Figure 28: Schematic diagram of status of turning over and writing
files of the eleventh embodiment of this invention
[Para 49]Figure 29: Side view schematic diagram of usage status for the arms
support board, keyboard tray of the twelfth embodiment of this invention
[Para 50]Figure 30: Top view schematic diagram of usage status for the arms
support board, keyboard tray of the twelfth embodiment of this invention
[Para 51]Figure 31: Schematic diagram of non-usage status for the keyboard
tray of the twelfth embodiment of this invention
[Para 52]Figure 32: Schematic diagram of usage status for the keyboard tray of
the twelfth embodiment of this invention
[Para 531Figure 33: Upward view schematic diagram of the keyboard tray of the
twelfth embodiment of this invention
[Para 541Figure 34: Front view schematic diagram of the keyboard tray of the
twelfth embodiment of this invention
Concrete execution mode
[Para 551The first embodiment of this invention is made out of one big drawer
1, one supporting rack 2, one piece of desk panel 3 and one piece of arms
support
board 4, as shown in Fig. 1"13, among them:
[Para 561The big drawer 1 is at the underside of desk panel 3 that is
supported
by the supporting rack 2 and it is in the face of the users of the sitting
posture. And the
big drawerl is on the longitudinal guide (not shown in the figure) set up
under the at
desk panel 3, which can be pushed and pulled backwards and forwards along the
orientation face to the users of sitting posture; The big drawer 1 is made out
of one
drawer panel 11, two drawer side plate 12, one drawer back plate 13 and one
drawer
bottom plate 14. When provided for users to work, it can preserve or take out
file, tool,
etc. conveniently; the above mentioned belongs to the existing technology.
[Para 57]The arms support board 4 is made out of the left, right vertical side
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edge of the desk panel, the front edge of two short horizontal edges and the
rear edge of
one long horizontal edge, and arc-shaped edge of middle part being internal
concave
form. And the arms support board 4 is connected to the top end position of
internal
plate surface of drawer panel 11 of big drawer 1 with the hinge (common hinge,
or flat
plate hinge, or bending hinge) at the side of the long horizontal edge
position; When
the users do not work, the arms support board 4 is in the big drawer 1, and
its upper
plate surface and the top surface of drawer panel 11 are at the same
horizontal plane. At
this moment, two hinge surface of the hinge are combined together (i.e. its
included
angle close to 0 ). When the users prepare to work, he pulls the big drawer 1
firstly, and
opens the arms support board, namely turns over upward by 180 around the
axial of
the hinge. At this moment, one plate surface of the arms support board 4 is
contacted
with and is supported on the top surfaces of drawer panel 11. Two hinge
surfaces of the
hinge are totally opened (i.e. its included angle close to 180 ). Then push in
the big
drawer 1 to the underside of the desk panel 3 until the arms support board
connects
together with the desk panel. At this moment, the arms support board and the
desk
panel is at the same height, or slightly higher than the desk panel. In order
to keep the
stability at the working position and to prevent the arms support board from
disconnecting with the desk panel, it can add the positioning device among the
arms
support board, the big drawer and the writing desk, such as the inserted pin,
positioning hook, the magnetism mass, the pressurize pit on the guide, etc.
And then
the users supports themselves by the pair of elbow and forearm on the arms
support
board 4. The produced pressure and turn-over moment are borne by the hinge and
the
top surface of drawer panel 11. Therefore, the supporting is stable and
reliable; when
the users stop working, he should turn over the arms support board 4 by 180
around
the reverse direction above described to make it enter into the big drawer.
Finally, push
in the big drawer 1 at the underside of desk panel 3; it's evident that the
turnover of the
arms support board 4 does not occupy the lower space of the big drawer 1
[Para 58]The second embodiment of this invention separates the arms support
board from the left, right side of horizontal edge and appropriate to remove
one section
of middle part to form one piece of left half arms support board and one piece
of right
half arms support board. Their arc-shaped edge together with the drawer panel
11 form
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the concave groove part, as shown in Fig. 4, 5; Other structures are the same
as first
embodiment, and therefore no longer give unnecessary details repeatedly.
[Para 59]For the third embodiment of this invention, there are connected with
one waling piece 5 of corresponding length on the desk panel of long
horizontal edge
of arms support board 4. Adjust the height difference between the desk panel 3
and the
arms support board 4 with the thickness of this waling piece 5, as shown in
Fig. 6, 7. It
makes the desk panel 3 with the arms support board 4 form the suitable height
difference in order to make the users' wrist feel comfortable; other
structures are the
same as first embodiment, and therefore no longer give unnecessary details
repeatedly.
[Para 60]For the fourth embodiment of this invention, separate the arms
support
board 4 as left, right side and be appropriate to remove one section of middle
part to
form one piece of left half arms support board and one piece of right half
arms support
board. At this moment, one long horizontal edge of this arms support board 4
is also
divided into two sections. There are connected with one section of waling
piece 5 of
corresponding length on the plate surfaces of two sections of long horizontal
edge
place respectively, as shown in Fig. 8, 9; Adjust the height difference
between the desk
panel 3 and the arms support board 4 with the thickness of this waling piece 5
to make
the desk panel 3 and the arms support board 4 form the appropriate height
difference in
order to make the users' wrist feel comfortable; Other structures are the same
as first
embodiment, and therefore no longer give unnecessary details repeatedly.
[Para 61]For the fifth embodiment of this invention, there are set up with a
pair
of parallel guide 121 on the internal plate surface of two pieces of drawer
side plate 12
of big drawer 1. There are set up with one keyboard tray 122 of mutual sliding
fit on
the guide 121, as shown in Fig. 10, 11. The keyboard and mice of computer can
be
placed on the keyboard tray 122 in order to operate the computer placed on the
desk
panel 3 (not shown in the figure); But when the users work, it is unnecessary
to push in
the big drawer 1 to the underside of the desk panel 3 to make the arms support
board
with the desk panel connect together; Other structures are the same as first
embodiment, and therefore no longer give unnecessary details repeatedly.
[Para 62JThe sixth embodiment of this invention is made out of two small
drawers la, one supporting rack 2, one piece of desk panel 3 and two pieces of
arms
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support boards 4a, 4b, as shown in Fig. 12 714, among them:
[Para 63]The two small drawers la is at the underside of desk panel 3 that is
supported by the supporting rack 2 and it is at the left, right side of the
users of the
sitting posture. And the two small drawers la is on the longitudinal guide
(not shown
in the figure) set up under the desk panel 3, which can be pushed and pulled
backwards
and forwards along the both sides face to the users of sitting posture; The
two small
drawers 1 a is made out of one drawer panel 11 a, two drawer side plate 12a,
one drawer
back plate 13a and one drawer bottom plate 14a. When provided for users to
work, it
can preserve or take out file, tool, etc. conveniently; the above mentioned
belongs to
the existing technology.
[Para 64]The left arms support boards 4a is formed by the left vertical side
edge
of the plate surface, the short horizontal edge of front edge and the long
horizontal
edge of rear edge, and the internal concave form arc-shaped edge of right
edge. While
the right arms support boards 4b is formed by the right vertical side edge of
the plate
surface, the short horizontal edge of front edge and the long horizontal edge
of rear
edge, and the internal concave form arc-shaped edge of left edge. The left
arms support
boards 4a and the right arms support boards 4b oppositely form a concave
groove
shape by their internal concave form arc-shaped edge. And connect to the top
end of
internal plate surface of opposite internal drawer side plate 12a of left,
right small
drawers I a with the hinge (common hinge, or flat plate hinge, or bending
hinge) on
their vertical side surfaces respectively; When the users do not work, the
left arms
support board 4a is inside the left small drawer la and the right arms support
board 4b
is inside the right small drawer la. And their upper plate surface and the top
surface of
drawer side plate 12a are at the same horizontal plane. At this moment, two
hinge
surface of the hinge are combined together (i.e. its included angle close to 0
). When
the users prepare to work, he should pull the two small drawers 1 a open
firstly, and
turn over upward the left, right arms support board 4a, 4b by 180 around the
axial of
the hinge. At this moment, one plate surface of the left arms support board 4a
and right
arms support board 4b is contacted with and is supported on the top surfaces
of the
corresponding drawer side plate 12a. At this moment, two hinge surfaces of the
hinge
are totally opened (i.e. its included angle close to 180 ). Then push in the
small drawer
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1 a to the underside of the desk panel 3 until the arms support board connects
together
with the desk panel. At this moment, the arms support board and the desk panel
is at
the same height, or slightly higher than the desk panel. In order to keep the
stability at
the working position and to prevent the arms support board from disconnecting
with
the desk panel, it can add the positioning device among the arms support
board, the
small drawer and the writing desk, such as the inserted pin, the positioning
hook, the
magnetism mass, the pressurize pit on the guide, etc. And then the users
support
themselves by the pair of elbow and forearm on the left, right arms support
board 4a,
4b. The produced pressure and turn-over moment are borne by the hinge and the
top
surface of drawer side plate 12a. Therefore, the supporting is stable and
reliable; when
the users stop working he should turn over the left, right arms support board
4a, 4b by
180 around the reverse direction above described to make it enter into the
small
drawer la. Finally, push in the small drawer la at the underside of desk panel
3; it's
evident that the turnover of the left, right arms support board 4a, 4b does
not occupy
the lower space of the small drawer 1 a.
[Para 65]For the seventh embodiment of this invention, there are respectively
connected with one vertical plate slab 6 on the desk panel of vertical side
edge of left
arms support board 4a and right arms support board 4b, as shown in Fig. 15,
16. Adjust
the height difference between the desk panel 3 and the left, right arms
support board 4a,
4b with the thickness of this vertical plate slab 6 to make the desk panel 3
with the left,
right arms support board 4a, 4b form the suitable height difference in order
to make the
users' wrist feel comfortable; other structures are the same as sixth
embodiment, and
therefore no longer give unnecessary details repeatedly.
[Para 66] The eighth embodiment of this invention is made out of one drawer
lc,
one supporting rack 2c, one piece of desk panel 3c, and one piece of arms
support
boards 4c and one movable backing board 5c, as shown in Fig. 17^20, among
them:
[Para 67] And the drawer lc is on the longitudinal guide (not shown in the
figure)
set up under the desk panel 3c, which can be pushed and pulled backwards and
forwards along the sides face to the users of sitting posture; The drawer lc
is made out
of one drawer panel l lc, two drawer side plates, one drawer back plate and
one drawer
bottom plate. When provided for users to work, it can preserve or take out
file, tool, etc.
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conveniently; the above mentioned belongs to the existing technology.
[Para 68]The arms support board 4c is formed by the left, right vertical side
edge of the desk panel, the two separated short horizontal edges of front edge
and one
long horizontal edge of rear edge, and arc-shaped edge of middle part being
internal
concave form. And the arms support board 4c is connected to the top end
position of
internal plate surface of drawer panel l lc of drawer lc with the hinge
(common hinge,
or flat plate hinge, or bending hinge) at the side of the long horizontal edge
position;
When the users do not work, the arms support board 4c is inside the drawer lc,
and its
upper plate surface and the top surface of drawer panel 11 c are at the same
horizontal
plane. At this moment, two hinge surfaces of the hinge are combined together
(i.e. its
included angle close to 0 ). When the users prepare to work, he should pull
the drawer
1c open firstly, and opens the arms support board, namely turns over upward
the arms
support board 4c by 180 around the axial of the hinge. At this moment, one
plate
surface of the arms support board 4c is contacted with and is supported on the
top
surfaces of drawer panel l lc. Two hinge surfaces of the hinge are totally
opened (i.e.
its included angle close to 180 ). Then push the drawer 1c towards the desk
panel 3c
until the arms support board 4c contact with the desk panel 3c. At this
moment, the
upper surface of arms support board 4c and the desk panel 3c is at the same
horizontal
height, or slightly higher than the upper surface of desk panel 3c. The desk
can be
regarded as the writing desk to be used at this moment. In order to keep the
stability at
the working position for the arms support board 4c and to prevent the arms
support
board from disconnecting with the desk panel, it can add the positioning
device among
the arms support board, the drawer and the writing desk, such as the inserted
pin,
positioning hook, the magnetism mass, the pressurize pit on the guide, etc.
And then
the users support themselves by the pair of elbow and forearm on the arms
support
board 4c. The produced pressure and turn-over moment are borne by the hinge
and the
top surface of drawer panel l lc. Therefore, the supporting is stable and
reliable; when
the users stop working, he should turn over the arms support board 4c by 180
around
the reverse direction above described to make it enter into the drawer lc.
Finally, push
in the drawer lc at the underside of desk panel 3c; it's evident that the
turnover of the
arms support board 4c does not occupy the lower space of the drawer lc.
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[Para 69]The movable backing board 5c is the board whose shape is roughly the
same as that of the arms support board 4c. Connect the movable backing board
to the
upper surface (i.e. the arms support board 4c is supported on the upper
surface of top
surface of drawer panel l lc) of arms support board 4c with the removable
connecting
parts (for instance: magnet, pin, snap fastener, etc.). It makes the upper
surface of this
movable backing board 5c be close to or slightly higher than the upper surface
of
computer keyboard 6c placed on the desk panel 3c in the horizontal height. At
this
moment the desk can be regarded as the computer desk to be used. When the pair
of
elbow and forearm of users are supported on the movable backing board 5c of
the arms
support board 4c to operate the computer keyboard 6c, it has avoided needing
to
upwarp the wrist; Certainly, while turning over and writing the files, it can
be very
convenient to take down the movable backing board 5c, a pair of elbows and
forearms
of users are supported on the arms support board 4c directly. In this way, one
desk can
act as computer desk and writing desk at the same time.
[Para 70]For the ninth embodiment of this invention, there supports a keyboard
tray 12c on the top surface of two pieces of drawer side plate of drawer lc
(the t
keyboard ray 12c can also support on the a pair of guides parallel set up on
the internal
board surface of two pieces of drawer side plates). There are the computer
keyboard 6c
and mouse as well as wrist pad (with mouse pad) placing on the keyboard tray
12c
(lead mouse cushion), and wrist cushion. The tray can carry out the push-pull
backwards and forwards inside the drawer. Pull the drawer Ic open and open the
arms
support board 4c. At this moment the upper surface of arms support board 4c is
close to
or slightly higher than the upper surface of computer keyboard 6c in the
horizontal
height, and the height is all lower than the lower surface of desk panel 3C.
The desk
can be used as the computer desk at this moment. When the pair of elbow and
forearm
of users are supported on the arms support board 4c directly to operate the
computer
keyboard 6c, it has avoided needing to upwarp the wrist; While turning over
and
writing the files, it can also be very convenient to fit on the movable
backing board 5c,
then push the drawer Ic towards the desk panel 3c until the movable backing
board 5c
contact with the desk panel 3c. It makes the upper surface of movable backing
board 5c
is the same as or slightly higher than the upper surface of desk panel 3c. The
desk can
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be used as the writing desk at this moment. The pair of elbow and forearm of
users are
supported on the movable backing board 5c. As shown in Fig. 21, 22; other
structures
are the same as that of the eighth embodiment, and no longer give unnecessary
details
repeatedly.
[Para 71]The tenth embodiment of this invention is made out of one drawer ld,
one supporting rack 2d, one piece of desk panel 3d, one piece of arms support
boards
4d and one piece of wedge-shaped block 5d, as shown in Fig. 23 F] 26, among
them:
[Para 72]The big drawer ld is at the underside of desk panel 3d that is
supported
by the supporting rack 2d and it is in the face of the users of the sitting
posture. And the
big drawerld is on the longitudinal guide (not shown in the figure) set up
under the at
desk panel 3d, which can be pushed and pulled backwards and forwards along the
orientation face to the users of sitting posture; The desk panel 3d utilizes
the scalable
or foldable supporting that is supported by the back end of supporting rack 2d
to make
the desk panel 3d reach two kinds of states of horizontal and slope. When the
drawer is
provided for users to work, it can preserve or take out file, tool, etc.
conveniently.
There is one piece of drawer panel 11d in front of the drawer 1d. The above
mentioned
all belongs to the existing technology; The top surface of this drawer panel
11 d is the
inclined top surface whose front end inclines downward by K (approximately 12
or
24 ).
[Para 731The arms support board 4d is formed by the left, right vertical side
edge of the desk panel, the two separated short horizontal edges of front edge
and the
one long horizontal edge of rear edge, and arc-shaped edge of middle part
being
internal concave form. And the arms support board 4d is connected to the top
end
position of internal plate surface of drawer panel lld of drawer ld with the
hinge
(common hinge, or flat plate hinge, or bending hinge) at the side of the long
horizontal
edge position; When the users do not work, the arms support board 4d is inside
the
drawer ld. At this moment, two hinge surface of the hinge are combined
together (i.e.
its included angle close to 0 ).
[Para 74]When the users want to read, draw, it is necessary to adjust the desk
panel 3d and the arms support board 4d to the sloping state. Pull the drawer
ld firstly
and open the arms support board, namely turn over the arms support board 4d
around
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the axial of the hinge (turn over by 180 +K ). At this moment, one plate
surface of the
arms support board 4d is contacted with and is supported on the inclined top
surfaces
of drawer panel 11 d. Then push in the drawer 1 d to the underside of the desk
panel3d
until the arms support board connects together with the desk panel. At this
moment, the
slope state of arms support board 4d and the desk panel 3d are probably
identical, and
the contact surface of the arms support board is the same as or slightly
higher than the
contact surface of the desk panel in the height. Accordingly the pair of elbow
and
forearm of users are supported on the arms support board 4d in order to
satisfy the
users' need to read or draw; when the users stop working, he should turn over
the arms
support board 4 along the reverse direction above described to make it enter
into the
drawer ld. Finally, push in the drawer ld at the underside of desk panel 3d;
it's evident
that the turnover of the arms support board 4d does not occupy the lower space
of the
drawer 1 d;
[Para 75JThe wedge-shaped block 5d is a triangular right prism body of acute
angle K (approximately 12 or 24 ). It is connected to the back side of the
arms
support board 4d with the sliding guides (or with the axis of rotation
perpendicular to
the plate surface of the arms support board 4d). In order to ensure the wedge-
shaped
block 5d to be wedged tightly without loosen, there should be set up with the
a set of
elastic locating pin 6d at the back side of the arms support board 4d, for
example the
locating pin is composed of the ball and the compression spring;
[Para 76]When the users want to write, operate the computer keyboard and
mouse, it is necessary to adjust the desk panel 3d and the arms support board
4d to the
horizontal state. Lift the arms support board 4d with hand, and push on (or
rotate
around the vertical rotation axis) the wedge-shaped block 5d to reach the
position
between the arms support board 4d and the oblique top surface of drawer panel
l ld to
make the arms support board 4d and the desk panel 3d take on the state of
equal height
or slightly higher horizontal state. And the balls of the elastic locating pin
6d
automatically lean against the end of the wedge-shaped block 5d under pressure
of
compression spring, support in order to prevent the wedge-shaped block 5d from
loosing.
[Para 77]The eleventh embodiment of this invention is to change one drawer Ic
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of the ninth embodiment into one piece of push-pull board le and cancel the
keyboard
tray, as shown in Fig. 27, 28. The push-pull board le is at the underside of
desk panel
3e that is supported by the supporting rack 2e and it is in the face of the
users of sitting
posture. And the push-pull board 1 e is on the longitudinal guide set up under
desk
panel 3e (not shown in the figure), which can be pushed and pulled backwards
and
forwards along the orientation face to the users of sitting posture; The push-
pull board
le is made out of one piece of front end-plate 1 le and one piece of
horizontal plate 12e
whose plate surfaces are perpendicular each other. It is used for placing the
computer
keyboard and mouse (with mouse pad) as well as the wrist pad, etc. when the
users
work. put of the (take the mouse cushion). Others are the same as that of the
ninth
embodiment.
[Para 781 The twelfth embodiment of this invention is made out of one drawer
lf,
one supporting rack 2f, one piece of desk panel 3f, and one piece of arms
support
boards 4f and keyboard tray 5f, as shown in Fig. 29-134, among them:
[Para 79] The drawer lf is at the underside of desk panel 3e that is supported
by
the supporting rack 2f and it is in the face of the users of sitting posture.
And the
drawer lf is on the longitudinal guide set up under desk panel 3f (not shown
in the
figure), which can be pushed and pulled backwards and forwards along the
orientation
face to the users of sitting posture; The drawer lf is made out of one drawer
panel l lf,
two drawer side plate 12f, one drawer back plate 13f and one drawer bottom
plate 14f.
When provided for users to work, it can preserve or take out file, tool, etc.
conveniently.
In addition there can be also all fixed a piece of plate slab on the internal
plate surface
of two drawer side plates 12f. The above mentioned belongs to the existing
technology.
[Para 80]The arms support board 4 is formed by the left, right vertical side
edge
of the desk panel, the two separated short horizontal edges of front edge and
the one
long horizontal edge of rear edge, and the arc-shaped edge of middle part
being
internal concave form. It can be allocated symmetrically at the left side and
the right
side of the arms support board and the width of right side can also be greater
than that
of left side so as to adapting to the persons who operate with right hand.
While for the
person who operate with left hand, it can be allocated contrary to it. The
arms support
board 4f is connected to the top end position of internal plate surface of
drawer panel
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CA 02653900 2008-12-09
1 1 f of drawer 1 f with the hinge (common hinge, or flat plate hinge, or
bending hinge)
at the side of long horizontal edge position; When the users do not work, the
arms
support board 4f is inside the big drawer lf, and its upper plate surface and
the top
surface of drawer panel 11 f are at the same horizontal plane. At this moment,
two
hinge surfaces of the hinge are combined together (i.e. its included angle
close to 0 ).
When the users prepare to work, he should pull the drawer lf open firstly, and
open the
arms support board, namely turns over the arms support board 4f upward by 180
around the axial of the hinge. Then push in the drawer lf to the underside of
the desk
panel 3f until the arms support board 4f contacts together with the desk panel
3f. At
this moment, the arm support board or is the same as the height of the desk
panel, or is
slightly higher than the desk panel. At this moment, the desk can be used as
the writing
desk. In order to keep the stability at the working position for the arms
support board
and to prevent the arms support board from disconnecting with the desk panel,
it can
add the positioning device among the arms support board, the drawer and the
writing
desk, such as the inserted pin, the positioning hook, the magnetism mass, the
pressurize pit on the guide, etc. And then the pair of elbow and forearm of
users are
supported on the arms support board 4f The produced pressure and turn-over
moment
are borne by the hinge and the top surface of drawer panel 11 Therefore, the
supporting is stable and reliable; when the users stop working, he should turn
over the
arms support board 4 by 180 around the reverse direction above described to
make it
enter into the drawer lf. Finally, push in the drawer lf to the underside of
desk panel3f;
it's evident that the turnover of the arms support board 4f does not occupy
the lower
space of the drawer 1 f.
[Para 81]There are the rectangle grooves on the upper surface of the keyboard
tray 5f, and the long edge of the rectangle groove is horizontal (there are
the keyboard,
wrist pad placing at the groove position, while there are the mouse placing on
the upper
surface of right side). There is fixed with one vertical baffle plate 51f at
the left side of
external bottom surface of keyboard tray 5f, and there is set up with one
detachable
board 52f at its right side. There have two horizontal slots 521 f on the
detachable board
52f, and there are connected with one vertical baffle plate 522f of
longitudinal
stretching downwards in the middle of two horizontal slots 521f And connect
the
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CA 02653900 2008-12-09
detachable board 52f to the external bottom surface of the keyboard tray 52f
with the
bolt. For the keyboard tray 5f, the vertical baffle plate 51f, the vertical
baffle plate 522f
of stretching downwards (if the bolt is connected at left end head of
horizontal trough
hole 521 f ) are leaned against the interior of two drawer side plates 12f of
drawer 1 f
respectively. While the external bottom surface of the keyboard tray 5f is
supported on
the top surface of two drawer side plates 12f (can also attain the purpose
through the
method that the external bottom surface of the keyboard tray 5f is supported
on the
plate slab of internal plate surface of two drawer side plates 12f of drawer
lf). It makes
the height of each key of computer keyboard that is placed inside the keyboard
tray 5f
is the same as or is close to the height of upper plate surface of the arms
support board
4f. The desk can be used as computer desk at this moment, as shown in Fig. 32.
It
avoids that operator can operate the keys only in the upwarping posture for
the wrists
of them; In case of not needing to use the keyboard, mouse, it can connect the
bolt to
the right end of horizontal slot 521 f. At this moment, the keyboard tray 5f
can be put on
the drawer bottom plate 14f inside the drawer 1 f directly, as shown in
Fig.31. The
notebook computers can also be placed at the groove position of keyboard tray.
