A kind of drawing table
Technical field
The present invention relates to furniture, and in particular to a kind of drawing table.
Background technology
Existing drawing table designs in order to facilitate drawing.Such as the patent that notification number is CN205923417U, this is specially
Profit discloses kind of a drawing table, including:Pedestal;Desktop, desktop are set on the base, and desktop includes desktop main body and instrument cases, work
Has box with groove upward, instrument cases are movably disposed in desktop main body, and instrument cases have in desktop main body
The extended position in the left side and/or right side of recovery position and stretching desktop main body.
When not needing to mapping, instrument cases are in desktop main body, i.e., instrument cases in recovery position can be saved and be painted in this way
The placement space of collective drawing.When plotted, instrument cases are pulled out from the left side of desktop main body and/or right side, the tool of mapping such as
Paintbrush and pigment etc. are placed in the groove of instrument cases, can make desktop clean and tidy in this way, the color of paintbrush pigment etc. is avoided to be coated in
On works.
When actually mapping, several drawings can be generally drawn, drawing at random is deposited on desk, easily leads to losing for drawing
It loses and makes drawing inconvenient.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of drawing table, can be more convenient neat
Storage drawing is collected, prevents drawing from losing, and be more convenient drawing.
To achieve the above object, the present invention provides following technical solutions:
A kind of drawing table, including desktop and the feet for being used to support desktop, the desktop lower end is installed with what Open Side Down
Storage case, the storage case lower end rotation connection is useful for the closing door that control storage case lower ending opening opens and closes, described
Let off roll and wind-up roll are rotatably connected in storage case, the let off roll and wind-up roll are located at storage case both ends respectively, described to put
Winding has a drawing on winding up roller, and described drawing one end passes through desktop and wears back again and winds after desktop on wind-up roll, the let off roll
Storage case is removably connected to wind-up roll, the wind-up roll is equipped with to be pierced by outside storage case towards user one end and be received for driving
Second force-applying piece of winding up roller rotation.
By using above-mentioned technical proposal, in use, can be drawn on the drawing above desktop or rough draft is set
Meter.After drawing drawing finishes or paint full, it can be exerted a force by the second force-applying piece to wind-up roll, rotate wind-up roll, by drawing
Volume is outside wind-up roll.New drawing can be driven to unreel out from let off roll simultaneously, prepared to continue to draw.The design can make
It keeps neat on desktop, does not have the drawing of stacking, facilitate drawing.The drawing finished is drawn simultaneously to be not easy to lose, it can be whole
Neat rolling and storage is on wind-up roll.
If drawing is completely used up, closing door only need to be opened, wind-up roll and let off roll is then removed, takes down old drawing, change
Upper new drawing.Old drawing can be stored.New drawing is first set on let off roll, and drawing one end is passed through desktop and again
It wears back to wind after desktop and be installed back in storage case in wind-up roll, then by let off roll and wind-up roll, shut closing door.
The further setting of the present invention is:Straight slot is offered on the desktop, the straight slot sets there are two and is located at respectively
Desktop both sides, the drawing wear back desktop again by straight slot across desktop, and the straight slot inner wall is equipped with flexible pad.
By using above-mentioned technical proposal, so as to reduce wind-up roll winding drawing, when new drawing is moved on desktop, figure
The abrasive forces that paper is subject to, and then reduce the impaired probability of drawing.
The further setting of the present invention is:The reversing roller for being rotationally connected with storage case is equipped with above the wind-up roll, it is described
Drawing one end first around reversing roller far from behind let off roll side further around crossing wind-up roll towards let off roll side, and wind in wind-up roll
On.
By using above-mentioned technical proposal, so as to make drawing of the winding on wind-up roll, paint figuratum one and faced
Interior winding, and then drawing pattern can be preferably protected, it is convenient that subsequently it is checked.
The further setting of the present invention is:The let off roll both ends are equipped with the first mounting base, and the let off roll is radially
Plugged and fixed is in circumferentially fixed in the first mounting base and with the first mounting base, and first mounting base is equipped with back to let off roll one end
Connecting seat, first mounting base, which is rotationally connected between connecting seat and the first mounting base and connecting seat, is equipped with whirlpool spring, the company
Joint chair is rotationally connected with receiving chamber interior wall, and the resistance machine for connecting seat to be prevented to rotate is equipped between the storage case and connecting seat
Structure.
By using above-mentioned technical proposal, when let off roll unreels, let off roll and the first mounting base are rotated relative to connecting seat,
Whirlpool spring has it certain resistance at this time, and then overcomes the inertia of let off roll, reduces drawing and unreels excessive probability quickly.
When the torsion of whirlpool spring is more than resistance of the resistance mechanism to connecting seat, connecting seat is rotated relative to storage case, makes let off roll that can continue
It unreels.
The further setting of the present invention is:First mounting base radially offers connection towards let off roll side
First card slot of one mounting base both sides, the let off roll both ends its radially fixed first fixture block, first fixture block are installed
It is embedded in the first card slot, its radial bolts of the first mounting base upper edge are connected with the first connection bolt, first connection
Bolt thread is connected to the first fixture block.
By using above-mentioned technical proposal, if let off roll need to be dismantled, only need to back out the first connection bolt, then between will put
Winding up roller is pulled away from the first mounting base, easy to operate.
The further setting of the present invention is:The resistance mechanism includes being opened in the limit hole for accommodating chamber interior wall and be set to
Spring jumping bean on rotation seat, the limit hole circumferentially offer several at equal intervals along connecting seat inner wall, the spring jumping bean
It is embedded in limit hole.
By using above-mentioned technical proposal, when let off roll unreels, if the torsion of whirlpool spring is more than limit hole to spring jumping bean
Resistance when, connecting seat relative to storage case rotate, make let off roll that can continue to unreel.At this time the torsion of whirlpool spring be more than connecting seat by
Resistance, therefore connecting seat can be more than rotating speed of first mounting base with respect to storage case with respect to the rotating speed of storage case, can reduce whirlpool spring and turn round
Power makes drawing can more easily paper delivery.Until whirlpool spring torsion, which is less than, accommodates chamber interior wall to the resistance or spring jumping bean of connecting seat again
It is secondary to enter in limit hole.Spring torsion in whirlpool continues to become larger in the case where let off roll relatively rotates the rotation of seat at this time.
The further setting of the present invention is:The wind-up roll both ends are equipped with the second mounting base, and the wind-up roll is radially
Plugged and fixed is in circumferentially fixed in the second mounting base and with the second mounting base, and first mounting base is rotated back to wind-up roll one end
Receiving chamber interior wall is connected to, the mounting base outer wall fixing sleeve is equipped with driving gear, and the receiving chamber interior wall is rotatably connected to system
Moving gear, the spragging gear are engaged in driving gear.
By using above-mentioned technical proposal, there are one resistances, when rotating wind-up roll, braking to driving gear for spragging gear
Gear can overcome the inertia of wind-up roll.Wind-up roll is made to retain a percentage of the total profits for the enterprise's own use in user desired position as far as possible, is prevented excessive to drawing
Winding.And then make full use of every one-inch drawing.
The further setting of the present invention is:The desktop upper edge drawing length direction, which slidably connects, is connected to pushing away for drawing
Flat bar, the bar that is bulldozed is equipped with two.
By using above-mentioned technical proposal, before drawing, it can will be bulldozed bar with respect to desktop and slide into table from desktop center
Plate side, and then drawing is bulldozed, make drawing more smooth, facilitate drawing.
The further setting of the present invention is:The desktop upper edge drawing length direction slidably connects sliding panel, Mei Gesuo
It states and is bulldozed that bar both ends are corresponding there are one sliding panel, and the sliding panel to offer horizontally disposed caulking groove and be set in circular arc
The lead-in groove put, the lead-in groove connect caulking groove close to desktop center one end, and the bar both ends that are bulldozed are fixed with sliding block, institute
Sliding block is stated to be embedded in caulking groove and be slidably coupled to caulking groove and lead-in groove;It is described to push away when the sliding block is embedded in caulking groove
Flat bar pushes against drawing.
It, can be along lead-in groove sliding slider, until sliding block is slipped into embedding before drawing by using above-mentioned technical proposal
In slot, it can ensure that being bulldozed bar pushes against drawing at this time.Bar will be bulldozed with respect to desktop slide into desktop side from desktop center again, and then
Drawing is bulldozed, makes drawing more smooth, facilitates drawing.
The further setting of the present invention is:The export slot set in circular arc, the export slot two are offered on the slide plate
End is connected to lead-in groove upper end and caulking groove far from desktop center one end, and the lead-in groove is with export slot in arc transition, institute
It states sliding block and is slidably coupled to export slot.
By using above-mentioned technical proposal, when drawing need to be wound, along export slot sliding slider, make to be bulldozed on bar and move up,
The pressure that drawing is subject to is reduced, and then makes drawing can more easily unwinding winding.
The present invention has the following advantages:1st, reduce the drawing stacked on desktop, facilitate the storage and storage of drawing;2、
Make the drawing on desktop more smooth, facilitate drawing.
Description of the drawings
Fig. 1 is the structure diagram of embodiment one;
Fig. 2 is the sectional view of embodiment one;
Fig. 3 is the enlarged drawing at A in Fig. 2;
Fig. 4 is the transverse sectional view of embodiment one
Fig. 5 is the enlarged drawing at B in Fig. 4;
Fig. 6 is the enlarged drawing at C in Fig. 4;
Fig. 7 is the sectional view of embodiment one(It is mainly used for embodying closing door);
Fig. 8 is the structure diagram of embodiment two;
Fig. 9 is the enlarged drawing at D in Fig. 8;
Figure 10 is the sectional view at let off roll in embodiment two;
Figure 11 is the enlarged drawing at E in Figure 10;
Figure 12 is the sectional view at the first mounting base in embodiment two;
Figure 13 is the sectional view at wind-up roll in embodiment two;
Figure 14 is the enlarged drawing at F in Figure 13;
Figure 15 is the sectional view of embodiment two(It is mainly used for embodying closing door);
Figure 16 is the structure diagram of embodiment three;
Figure 17 is the enlarged drawing at G in Figure 16;
Figure 18 is the sectional view at three middle slide plate of embodiment.
Reference numeral:1st, desktop;2nd, feet;3rd, storage case;4th, straight slot;5th, flexible pad;6th, let off roll;7th, wind-up roll;8、
First mounting base;9th, the first card slot;10th, the first fixture block;11st, the first connection bolt;12nd, connecting seat;13rd, whirlpool spring;14th, resistance machine
Structure;15th, limit hole;16th, spring jumping bean;17th, reversing roller;18th, the second mounting base;19th, the second card slot;20th, the second fixture block;21、
Second connection bolt;22nd, the first force-applying piece;23rd, the second force-applying piece;24th, driving gear;25th, spragging gear;26th, closing door;
27th, fixing bolt;28th, it is bulldozed bar;29th, sliding panel;30th, caulking groove;31st, it imports;32nd, slot is exported;33rd, sliding block;34th, drawing.
Specific embodiment
With reference to attached drawing, the present invention will be further described.
Embodiment one:
As depicted in figs. 1 and 2, a kind of drawing table, including desktop 1 and the feet 2 for being used to support desktop 1.Peace is fixed in 1 lower end of desktop
Equipped with the storage case 3 that Open Side Down.As shown in figure 3, offering straight slot 4 on desktop 1, straight slot 4 sets there are two and is located at table respectively
1 both sides of plate, 4 inner wall of straight slot are equipped with flexible pad 5.Let off roll 6 and wind-up roll 7 are equipped with along 3 width direction of storage case in storage case 3,
Let off roll 6 and wind-up roll 7 are located at 3 left and right sides of storage case respectively.Winding has drawing 34 on let off roll 6.Drawing 34 is separate to be unreeled
6 one end of roller 1 lower section of desktop is worn back, then wind in wind-up roll 7 through 1 top of desktop, then by another straight slot 4 by straight slot 4
It is upper.
Rotation wind-up roll 7 can wind used drawing 34 on wind-up roll 7, and by new drawing 34 from let off roll
It is released on 6, facilitates the collection of old drawing 34, can also make desktop cleaner and tidier.
As shown in Figure 4 and Figure 5,6 both ends of let off roll are equipped with the first mounting base 8, and the first mounting base 8 is rotationally connected with storage case
3 inner walls.First mounting base 8 radially offers the first card slot 9, the first installation of the first card slot 9 connection towards 6 side of let off roll
8 both sides of seat.6 both ends of let off roll its it is radially fixed first fixture block 10 is installed, the first fixture block 10 is embedded in the first card slot 9.
Its radial bolts of first mounting base, 8 upper edge are connected with the first connection bolt 11, and the first connection bolt 11 is threadedly connected to the first card
Block 10.When 6 stress of let off roll, the first mounting base 8 can be rotated relative to storage case 3, and then make let off roll 6 with respect to 3 turns of storage case
It is dynamic, complete unreeling for drawing 34.
As shown in figure 5, being fixedly installed the first force-applying piece 22 in the first mounting base 8 of user side, first applies
22 and first mounting base 8 of power part is in coaxial arrangement.First force-applying piece 22 passes through storage case 3 and is rotationally connected with storage case 3.It can lead to
The first force-applying piece 22 of rotation is crossed to rotate the first mounting base 8, and then let off roll 6 is driven to rotate.
As shown in Figure 4 and Figure 6,7 both ends of wind-up roll are equipped with the second mounting base 18, and the second mounting base 18 is rotationally connected with receiving
3 inner wall of case.Second mounting base 18 radially offers the second card slot 19 towards 7 two side of wind-up roll, the second card slot 19 connection the
Two mounting bases, 18 both sides.7 both ends of wind-up roll its it is radially fixed second fixture block 20 is installed, the second fixture block 20 is embedded at the second card
In slot 19.Its radial bolts of second mounting base, 18 upper edge are connected with the second connection bolt 21, and the second connection bolt 21 is threadedly coupled
In the second fixture block 20.When 7 stress of wind-up roll, the second mounting base 18 can be rotated relative to storage case 3, and then make wind-up roll 7 opposite
Storage case 3 rotates, and completes the winding of drawing 34.
As shown in fig. 6, being fixedly installed the second force-applying piece 23 in the second mounting base 18 of user side, second applies
23 and second mounting base 18 of power part is in coaxial arrangement.Second force-applying piece 23 passes through storage case 3 and is rotationally connected with storage case 3.It can
The second mounting base 18 is rotated, and then wind-up roll 7 is driven to rotate by rotating the second force-applying piece 23.
As shown in fig. 7,3 lower end of storage case is equipped with closing door 26.26 one end of closing door is rotationally connected with storage case 3, and another
Threaded one end is connected with fixing bolt 27.When closing door 26 closes 3 lower end of storage case, fixing bolt 27 is threadedly connected to receiving
Case 3.When closing door 26 need to be opened, fixing bolt 27 is twisted from storage case 3.
The use principle of the drawing table is as follows,
1st, first fixing bolt 27 from storage case 3 is backed out, opens closing door 26, then back out the first connection bolt 11 and second
Bolt 21 is connected, let off roll 6 and wind-up roll 7 are separated from the first mounting base 8 and the second mounting base 18;
2nd, wind-up roll 7 from drawing 34 is extracted out, then new drawing 34 is installed on let off roll 6;
3rd, one end of new drawing 34 is sequentially passed through into two straight slots 4, and coiling is on wind-up roll 7;
4th, the first fixture block 10 of let off roll 6 is embedded into the first card slot 9 of the first mounting base 8, then screws on the first connection spiral shell
Bolt 11, you can let off roll 6 is stably mounted in the first mounting base 8;Second fixture block 20 of wind-up roll 7 is embedded to the second installation
In second card slot 19 of seat 18, the second connection bolt 21 is then screwed on, you can wind-up roll 7 is stably mounted to the second mounting base 18
On;
5th, it is exerted a force by the second force application rod to wind-up roll 7, then extra drawing 34 is wound in wind-up roll 7, is made on desktop 1
34 flat state of drawing, no stacking;
6th, closing door 26 is rotated, closing door 26 is made to close 3 lower end of storage case;
7th, it due to the 34 flat state of drawing on desktop 1, therefore can draw, use on the drawing 34 directly above desktop 1
, can be by the second force rotation wind-up roll 7 if the drawing 34 of 1 top of desktop is painted full in the process, and then full drawing will be painted
In 34 windings to wind-up roll 7, the new pull-out of drawing 34 is lain in into 1 top of desktop.
Embodiment two:
As shown in figure 8, a kind of drawing table, including desktop 1 and the feet 2 for being used to support desktop 1.1 lower end of desktop is installed with
The storage case 3 that Open Side Down.As shown in figure 9, offering straight slot 4 on desktop 1, straight slot 4 sets there are two and is located at 1 liang of desktop respectively
Side, 4 inner wall of straight slot are equipped with flexible pad 5.In storage case 3 let off roll 6 and wind-up roll 7, let off roll are equipped with along 3 width direction of storage case
6 and wind-up roll 7 be located at the left and right sides of storage case 3 respectively.Winding has drawing 34 on let off roll 6.Drawing 34 is far from 6 one end of let off roll
By straight slot 4 through the top of desktop 1, then worn back below desktop 1, then wind on wind-up roll 7 by another straight slot 4.
Rotation wind-up roll 7 can wind used drawing 34 on wind-up roll 7, and by new drawing 34 from let off roll
It is released on 6, facilitates the collection of old drawing 34, can also make desktop cleaner and tidier.
As shown in Figure 10 and Figure 11,6 both ends of let off roll are equipped with the first mounting base 8, and the first mounting base 8 is rotationally connected with receiving
3 inner wall of case.First mounting base 8 radially offers the first card slot 9, the first peace of the first card slot 9 connection towards 6 side of let off roll
Fill 8 both sides of seat.6 both ends of let off roll its it is radially fixed first fixture block 10 is installed, the first fixture block 10 is embedded at the first card slot 9
It is interior.Its radial bolts of first mounting base, 8 upper edge are connected with the first connection bolt 11, and the first connection bolt 11 is threadedly connected to first
Fixture block 10.
As is illustrated by figs. 11 and 12, the first mounting base 8 is equipped with connecting seat 12, the first 8 turns of mounting base back to 6 one end of let off roll
It is dynamic to be connected to connecting seat 12.Whirlpool spring 13 is equipped between first mounting base 8 and connecting seat 12, whirlpool spring 13 can prevent the first mounting base 8
It is rotated relative to connecting seat 12.As shown in figure 11, connecting seat 12 is rotationally connected with 3 inner wall of storage case, storage case 3 and connecting seat 12 it
Between be equipped with resistance mechanism 14, resistance mechanism 14 can prevent connecting seat 12 from being rotated relative to storage case 3.Resistance mechanism 14 includes limit hole
15 and spring jumping bean 16.Spring jumping bean 16 is set to 12 outer wall of connecting seat.Limit hole 15 is opened in storage case 3 and connecting seat 12
On bearing surface, and limit hole 15 is provided with several along connecting seat 12 is circumferential.Spring jumping bean 16 is embedded at one of limit hole 15
It is interior.
When 6 stress of let off roll, 6 and first mounting base 8 of let off roll is rotated relative to connecting seat 12, and whirlpool spring 13 has it at this time
Certain resistance, and then overcome the inertia of let off roll 6, it reduces drawing 34 and unreels excessive probability quickly.If whirlpool spring 13
When torsion is more than resistance of the limit hole 15 to spring jumping bean 16, connecting seat 12 is rotated relative to storage case 3, makes let off roll 6 that can continue
It unreels.The torsion of whirlpool spring 13 is more than the resistance that connecting seat 12 is subject at this time, therefore connecting seat 12 can be more than with respect to the rotating speed of storage case 3
The rotating speed of first mounting base, 8 opposite storage case 3, can reduce 13 torsion of whirlpool spring, make drawing 34 can more easily paper delivery.Until whirlpool spring
13 torsion are again introduced into limit hole 15 resistance or spring jumping bean 16 of connecting seat 12 less than 3 inner wall of storage case.Whirlpool spring at this time
13 torsion continue to become larger in the case where let off roll 6 relatively rotates the rotation of seat, so repeat, complete unreeling for drawing 34.
As shown in figure 8,7 top of wind-up roll is equipped with reversing roller 17, reversing roller 17 is rotationally connected with storage case 3.Reversing roller 17
It is located in same level with let off roll 6.34 one end of drawing first around reversing roller 17 far from behind 6 side of let off roll further around cross wind
Roller 7 is wound towards 6 side of let off roll on wind-up roll 7.And then make drawing 34 of the winding on wind-up roll 7, picture case quilt
Winding is in inside, protection drawing achievement.
As shown in figure 13,7 both ends of wind-up roll are equipped with the second mounting base 18, and the second mounting base 18 is rotationally connected with storage case 3
Inner wall.Second mounting base 18 radially offers the second card slot 19, the second peace of the second card slot 19 connection towards 7 two side of wind-up roll
Fill 18 both sides of seat.7 both ends of wind-up roll its it is radially fixed second fixture block 20 is installed, the second fixture block 20 is embedded at the second card slot 19
It is interior.Its radial bolts of second mounting base, 18 upper edge are connected with the second connection bolt 21, and the second connection bolt 21 is threadedly connected to the
Two fixture blocks 20.When 7 stress of wind-up roll, the second mounting base 18 can be rotated relative to storage case 3, and then make wind-up roll 7 is opposite to accommodate
Case 3 rotates, and completes the winding of drawing 34.
As shown in figure 13, it is fixedly installed the second force-applying piece 23 in the second mounting base 18 of user side, second
23 and second mounting base 18 of force-applying piece is in coaxial arrangement.Second force-applying piece 23 passes through storage case 3 and is rotationally connected with storage case 3.
The second mounting base 18 can be rotated, and then wind-up roll 7 is driven to rotate by rotating the second force-applying piece 23.Mounting base outer wall fixing sleeve
Equipped with driving gear 24,3 inner wall of storage case is rotatably connected to spragging gear 25, and spragging gear 25 is engaged in driving gear 24.
As shown in figure 14,3 lower end of storage case is equipped with closing door 26.26 one end of closing door is rotationally connected with storage case 3, and another
Threaded one end is connected with fixing bolt 27.When closing door 26 closes 3 lower end of storage case, fixing bolt 27 is threadedly connected to receiving
Case 3.When closing door 26 need to be opened, fixing bolt 27 is twisted from storage case 3.
1st, first fixing bolt 27 from storage case 3 is backed out, opens closing door 26, then back out 11 He of the first connection bolt
Second connection bolt 21, let off roll 6 and wind-up roll 7 are separated from the first mounting base 8 and the second mounting base 18;
2nd, wind-up roll 7 from drawing 34 is extracted out, then new drawing 34 is installed on let off roll 6;
3rd, one end of new drawing 34 is sequentially passed through into two straight slots 4, and coiling is on wind-up roll 7;
4th, the first fixture block 10 of let off roll 6 is embedded into the first card slot 9 of the first mounting base 8, then screws on the first connection spiral shell
Bolt 11, you can let off roll 6 is stably mounted in the first mounting base 8;Second fixture block 20 of wind-up roll 7 is embedded to the second installation
In second card slot 19 of seat 18, the second connection bolt 21 is then screwed on, you can wind-up roll 7 is stably mounted to the second mounting base 18
On;
5th, it is exerted a force by the second force application rod to wind-up roll 7, then extra drawing 34 is wound in wind-up roll 7, is made on desktop 1
34 flat state of drawing, no stacking;
6th, closing door 26 is rotated, closing door 26 is made to close 3 lower end of storage case;
7th, it due to the 34 flat state of drawing on desktop 1, therefore can draw, use on the drawing 34 directly above desktop 1
, can be by the second force rotation wind-up roll 7 if the drawing 34 of 1 top of desktop is painted full in the process, and then full drawing will be painted
In 34 windings to wind-up roll 7, the new pull-out of drawing 34 is lain in into 1 top of desktop;
At the same time when wind-up roll 7 rotates, spragging gear 25 makes wind-up roll 7 that can stop to wind-up roll 7 there are one resistance
In its stopping place needed for user, the rotation that wind-up roll 7 occurs due to inertia is reduced;
And resistance mechanism 14 and whirlpool spring 13 can overcome the inertia of let off roll 6, when so that the wind-up roll 7 is stopped operating, let off roll 6 is certain
Stop, and then make the drawing 34 of 1 top of desktop more smooth.
Embodiment three:
Difference lies in as shown in figure 15,1 upper edge drawing of desktop, 34 length direction is equipped with and is bulldozed bar for embodiment three and embodiment one
28, bar 28 is bulldozed equipped with two, and two are bulldozed bar 28 and are symmetrical set along 1 center of desktop.As shown in figure 16,28 both ends of bar are bulldozed
Equipped with sliding panel 29, sliding panel 29 is slidably connected to desktop 1 along 34 length direction of drawing.
As shown in figure 17, sliding panel 29 offers horizontally disposed caulking groove 30,31 slot of importing set in circular arc
With the export slot 32 set in circular arc.31 slots connection caulking groove 30 is imported close to 1 center one end of desktop, 32 both ends of export slot connect respectively
It is connected to and imports 31 slot upper ends and caulking groove 30 far from 1 center one end of desktop, it is in arc transition to import 31 slots with export slot 32.Such as Figure 16
Shown in Figure 17, it is bulldozed 28 both ends of bar and is fixed with sliding block 33, sliding block 33 is embedded in caulking groove 30 and is slidably coupled to embedding
Slot 30 imports 31 slots and export slot 32.When sliding block 33 is embedded in caulking groove 30, it is bulldozed bar 28 and pushes against drawing 34.
Before picture, first sliding block 33 along export slot 32 can be slided, and then drive and be bulldozed bar 28 and move upwards, leave figure
Then driving is bulldozed bar 28 and is slided along 34 length direction of drawing, until two are bulldozed bar 28 and move in desktop 1 by paper 34
Between.Then sliding block 33 is slipped into along 31 slots are imported in caulking groove 30, makes to be bulldozed the abutting drawing 34 of bar 28.Then it is bulldozed bar by two
28 respectively to 1 liang of Slideslip of desktop, and then drawing 34 is made to be bulldozed bar 28 and is bulldozed, and can more easily draw on drawing 34.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.