CN107836891A

CN107836891A - A kind of drawing board chair

Info

Publication number: CN107836891A
Application number: CN201711023054.XA
Authority: CN
Inventors: 潘巍巍
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2018-03-27

Abstract

The invention discloses a kind of drawing board chair, including seat and drawing board, the drawing board is connected with seat, the seat downside is fixedly connected with chair leg, the seat upper side has upwardly extended the chair back, and the seat downside is fixedly connected with carriage, and the side of the carriage is provided with cross bar, one end connection drawing board of the cross bar dorsal glide device, the drawing board are foldable.

Description

A kind of drawing board chair

Technical field

The present invention relates to a kind of schooling apparatus, more particularly to a kind of drawing board chair.

Background technology

Chair is that a kind of have the also armed thing to sit on of backrest, some.Ancient times sit on the ground, and original does not have chair, and " chair " is originally Wooden name.The title of chair is first appeared in the Tang Dynasty, and the image of chair will then pass up to the Hu bed in incoming north during Chinese Wei.Chair presses material Qualitative classification：Solid wood chair, glass chair, iron skill chair, plastic chair, fabric chair, skin skill chair, foaming chair etc..Chair is pressed using classification：Office Chair, dining chair, chair, leisure chaise longue, chaise longue, chair special etc..

Chair is widely used in life, and chair of the prior art only has mostly rests this single work(for people Can, so need to remove drawing board in fine arts lessons one's parents student and, because the space in a classroom is limited, drawing board can take largely Space, it will so cause the crowded of classroom.

The content of the invention

In view of the deficienciess of the prior art, it is an object of the invention to provide one kind to be contracted in bottom seat by drawing board Chair.

To achieve the above object, the invention provides following technical scheme：A kind of drawing board chair, including the seat of cuboid and Drawing board, the drawing board are connected with seat, and the seat downside is fixedly connected with chair leg, and the seat upper side has upwardly extended The chair back, the seat downside are fixedly connected with carriage, and the carriage includes chute and draw runner, and the chute is fixed It is arranged on the downside of seat, the draw runner sliding is arranged in chute, and the chute is arranged on center of chair surface and one end is prolonged Seat is extended relative on the position of the chair back, the other end extends backwards to the chair back, is opened up in the side wall at left and right sides of the chute There are shifting chute, length direction extension of the shifting chute along chute, the draw runner offers movement relative to the both sides of shifting chute Block, the movable block slip is arranged in shifting chute, and to being arranged on draw runner slip in chute, the draw runner is backwards One end of the chair back is hinged with cross bar, and the cross bar is fixedly connected backwards to one end of draw runner with drawing board.

As a further improvement on the present invention, shifting chute one end closing, the other end are provided with for preventing movable block The locating part of abjection, the locating part offer stopper slot relative to the fast side of movement, and the movable block is relative to stopper slot Side be provided with card bead, when movable block, which slides onto shifting chute, card bead is caught in stopper slot relative to one end of locating part, The movable block stops movement.

As a further improvement on the present invention, one end of the draw runner is hinged with cross bar, and the draw runner is hinged with cross bar One end is provided with card article, and the cross bar is provided with neck relative to one end of card article, when cross bar is flipped up, the card article card Enter to realize the spacing of cross bar in neck.

As a further improvement on the present invention, the cross bar includes the first bar and the second bar, described first bar one end and cunning Bar is hinged, and the other end of first bar is enclosed on outside the second bar and the second bar can move up and down in the first bar, and described second Bar is fixedly connected backwards to one end of the first bar with drawing board, the junction of first bar and the second bar be provided with fix the first bar with The circular fixture of second bar height.

As a further improvement on the present invention, the drawing board includes the first plate and the second plate and soft connect band, described First intralamellar part is provided with clockwork spring, and one end of the connect band is fixedly connected with the side of the second plate, and the other end is from the first plate Side is extend into the first plate, and is wound up on clockwork spring, and first plate offers two first relative to the side of connect band Hole clipping, first backboard are fixedly connected to the side of the first hole clipping with cross bar, and second plate is relative to the one of the first hole clipping Side is provided with two the first fixture blocks, and when the first plate and the second plate are mutually spliced into drawing board, two the first fixture blocks are one-to-one It is embedded into two the first hole clippings, connect band is accommodated in the first plate by clockwork spring winding connect band.

As a further improvement on the present invention, the first plate upper side and the second plate upper side offer two circles Groove, spring is provided with inside two circular troughs, the spring one end is fixedly connected with circular trough bottom, and the other end is set There is the first press strip for pushing down paper, the first press strip downside connects with two springs respectively close to the position at its both ends Connect, when the first press strip pushes down paper, the first press strip and the first plate and the second plate, which coordinate, clamps paper, and spring is stretched.

As a further improvement on the present invention, magnet is provided with inside two first press strips, when under the first plate When side is overlapping with the downside of the second plate, the magnet in the first plate and the second plate attracts each other.

As a further improvement on the present invention, the seat downside offers buckling groove, be provided with the drawing board with The clamping bar that buckling groove is engaged, when the clamping bar is caught in buckling groove, drawing board is bonded with seat downside.

Beneficial effects of the present invention, pass through the setting of seat, it is possible to effectively sat down for people, make one to rest, pass through picture The setting of plate, it is possible to effectively drawn a picture for student, pass through the setting of chair leg, it is possible to support seat, seat is held up, make one When sitting down, both legs be free to hang down, and pass through the setting of the chair back, it is possible to effectively leans on rest for people, is filled by sliding The setting put, it is possible to effectively slide drawing board, drawing board is shunk, carriage includes chute and draw runner, and draw runner is arranged on cunning In groove and draw runner slip in chute, thus by the setting of chute, it is possible to the sliding rail of draw runner is limited, to keep sliding Bar straight-line travelling, pass through the setting of draw runner, it is possible to it is effective to drive cross bar sliding, opened in draw runner relative to the both sides of shifting chute If movable block, movable block and draw runner integrated setting, movable block is set to be slid in shifting chute to aid in draw runner to slide, thus by The setting of movable block and shifting chute, it is possible to which effective auxiliary draw runner slides in chute, passes through the setting of cross bar, it is possible to have The connection carriage and drawing board of effect, by the setting of drawing board, it can be set with effectively supplying people to draw a picture by the way that drawing board is folding Put, it is possible to the effective space for reducing drawing board, so just will not be general compared with technology, because drawing board takes a large amount of skies Between and cause the crowded of classroom space.

Brief description of the drawings

Fig. 1 is the overall structure figure of drawing board chair；

Fig. 2 is the overall structure figure of drawing board；

Fig. 3 is the overall structure figure that drawing board pulls out；

Fig. 4 is the overall structure figure of carriage；

Fig. 5 is the stopper slot in a portions and the detailed structure view of card bead in Fig. 1；

Fig. 6 is drawing board and the detailed structure view during clamped condition of seat downside；

Fig. 7 is drawing board and the detailed structure view of seat downside clamping；

Fig. 8 is the detailed structure view that connect band is involved in clockwork spring by clockwork spring.

1st, seat；2nd, drawing board；3rd, chair leg；4th, the chair back；5th, carriage；6th, cross bar；7th, chute；8th, draw runner；9th, shifting chute； 10th, movable block；11st, locating part；12nd, neck；13rd, card article；14th, the first bar；15th, the second bar；16th, fixture；17th, connect band； 18th, the first plate；19th, the second plate；20th, clockwork spring；21st, the first hole clipping；22nd, the first fixture block；23rd, circular trough；24th, spring；25th, first Press strip；26th, stopper slot；27th, card bead；28th, clamping bar；29th, buckling groove.

Embodiment

The present invention is described in further detail below in conjunction with the embodiment given by accompanying drawing.

Shown in reference picture 1-8, a kind of drawing board chair of the present embodiment, include the seat 1 and drawing board 2 of cuboid, the drawing board 2 It is connected with seat 1, the downside of seat 1 is fixedly connected with chair leg 3, and the upper side of seat 1 has upwardly extended the chair back 4, institute State the downside of seat 1 and be fixedly connected with carriage 5, the carriage 5 includes chute 7 and draw runner 8, and the chute 7 is fixed It is arranged on the downside of seat 1, the sliding of draw runner 8 is arranged in chute 7, and the chute 7 is arranged on the center of seat 1 and one End is extended on position of the seat 1 relative to the chair back 4, and the other end extends backwards to the chair back 4, the side wall of the left and right sides of chute 7 On offer shifting chute 9, length direction extension of the shifting chute 9 along chute 7, the draw runner 8 is relative to the two of shifting chute 9 Side offers movable block 10, and the slip of movable block 10 is arranged in shifting chute 9, to being arranged on the slip of draw runner 8 In chute 7, the draw runner 8 is hinged with cross bar 6 backwards to one end of the chair back 4, and the cross bar 6 is solid with drawing board 2 backwards to one end of draw runner 8 Fixed connection, people are sitting on seat 1, are pulled out drawing board 2 and are drawn a picture, thus by the setting of seat 1, it is possible to effectively sat for people, And pass through the setting of drawing board 2, it is possible to effectively drawn a picture for people, four chair legs 3 are set in the downside of chair, can not only be protected The stability of seat 1 is held, seat 1 can more be propped up, when making one to be sitting on seat 1, both legs be free to hang down, and increase makes The comfort level of user, the chair back 4 is upwardly extended in the upper side of seat 1, has passed through the setting of the chair back 4, it is possible to leaned on and stop for people Breath, carriage 5 is provided with the downside of seat 1, and the side of carriage 5 is provided with cross bar 6, the dorsal glide of cross bar 6 dress The side for putting 5 is provided with drawing board 2, and carriage 5, which slides, drives cross bar 6 and drawing board 2 to move, thus by setting for carriage 5 Put, it is possible to the effective movement for realizing drawing board 2, carriage 5 include chute 7 and draw runner 8, draw runner 8 be arranged on chute 7 it is interior and The slip in chute 7 of draw runner 8, thus by the setting of chute 7, it is possible to the sliding rail of draw runner 8 is limited, to keep draw runner 8 straight-line travellings, pass through the setting of draw runner 8, it is possible to it is effective to drive cross bar 6 to slide, in draw runner 8 relative to shifting chute 9 two Side opens up movable block 10, movable block 10 and the integrated setting of draw runner 8, movable block 10 is slid in shifting chute 9 to aid in draw runner 8 Sliding, thus by the setting of movable block 10 and shifting chute 9, it is possible to which effective auxiliary draw runner 8 slides in chute 7, cross bar 6 For connecting drawing board 2 and carriage 5, thus by the setting of cross bar 6, it is possible to driven while carriage 5 slides Drawing board 2 moves, and passes through the setting of drawing board 2, it is possible to is drawn a picture for user, passes through 2 folding setting of drawing board, it is possible to subtract The space that small drawing board 2 takes, so just will not be general compared with technology, and substantial amounts of space is taken because the volume of drawing board 2 is too big, Cause the crowded of classroom.

As a kind of improved embodiment, the one end of shifting chute 9 closing, the other end is provided with for preventing from moving The locating part 11 that motion block 10 is deviate from, the locating part 11 offer stopper slot 26, the movement relative to the side of movement fast 10 Block 10 is provided with card bead 27 relative to the side of stopper slot 26, when movable block 10 slides onto shifting chute 9 relative to locating part 11 When one end makes the card bead 27 be caught in stopper slot 26, the movable block 10 stops movement, when movable block 10 slides onto the end points of shifting chute 9 Place, if no object blocks movable block 10, movable block 10 is then easily deviate from out of shifting chute 9, thus by setting for locating part 11 Put, it is possible to it is effective to prevent movable block 10 from deviating from out of shifting chute 9, stopper slot 26 is opened up on locating part 11, in sliding block Card bead 27 is opened up relative to one end of stopper slot 26, and the stopper slot 26 in the present embodiment can be the flexible material such as rubber It is made, when sliding onto one end of the relative limit part 11 of draw runner 8 when pulling out draw runner 8 to be bonded with locating part 11, because card bead 27 Extruding make stopper slot 26 produce deformation to be caught in card bead 27, when shrinking drawing board 2, draw runner 8 need to be slid back to, need to be to draw runner 8 Force, card bead 27 is passed rear draw runner 8 out of stopper slot 26 can slide in chute 7.

As a kind of improved embodiment, one end of the draw runner 8 and cross bar 6 are be hinged, the draw runner 8 and cross bar 6 be hinged one end are provided with card article 13, and the cross bar 6 is provided with neck 12 relative to one end of card article 13, when cross bar 6 turns over upwards When turning, the card article 13, which is caught in neck 12, realizes the spacing of cross bar 6, and when cross bar 6 is flipped up, the card article 13 is caught in card The spacing of cross bar 6 is realized in groove 12, when student needs to use drawing board 2, only need to hand-pull cross bar 6, by pulling cross bar 6 will Draw runner 8 is pulled out out of chute 7, and direction of the cross bar 6 when being acted on without external force need to only rotate cross bar 6 vertically downward, during use 180 °, card article 13, which is caught in neck 12, fixes cross bar 6, and the neck 12 in the present embodiment is arranged to outer small interior big, works as card article 13 when need to be snapped onto in neck 12, and card article 13 is caught in along can produce deformation by the gear of neck 12, the material of card article 13 can be by Rubber etc. is also easy to produce elastically-deformable material.

As a kind of improved embodiment, the cross bar 6 includes the first bar 14 and the second bar 15, first bar 14 one end are be hinged with draw runner 8, and the other end of first bar 14 is enclosed on the outside of the second bar 15 and the second bar 15 can be in the first bar 14 Inside move up and down, second bar 15 is fixedly connected backwards to one end of the first bar 14 with drawing board 2, the bar of the first bar 14 and second 15 junction is provided with the circular fixture 16 for fixing the first bar 14 and the height of the second bar 15, due to drawing board 2 without using When need to be contracted to the downside of seat 1, so the length of cross bar 6 should set shorter, but use drawing board 2 in student During, drawing board 2 should be arranged on the positive front upper place of user's sight, so need to increase the length of cross bar 6, therefore by horizontal stroke Bar 6 divides for the first bar 14 and the second bar 15, collapsible between the first bar 14 and the second bar 15, when drawing board 2 needs to be retracted to seat 1 During downside, the second bar 15 is contracted to inside the first bar 14, being rotated further by fixture 16 makes the outer of the bar 15 of fixture 16 and second Wall is inconsistent, prevents from being mutually shifted between the first bar 14 and the second bar 15, only need to be by cunning when user needs to use drawing board 2 Bar 8 pulls out, then card article 13 is caught in neck 12 rotation of cross bar 6, the fixation of cross bar 6 is not rotated, then rotary mount 16 Fixture 16 is separated with the outer wall of the second bar 15, then pull out the second bar 15, when the second bar 15 is slid onto into correct position, be rotated further by Fixture 16, make the outer wall of fixture 16 and the second bar 15 inconsistent, fix the height of the second bar 15, thus by the first bar 14 With the setting of the second bar 15, it is possible to the scaling of cross bar 6 is realized to adjust the height of drawing board 2, and by the setting of fixture 16, Can is fixed after the first bar 14 slides onto correct position with the second bar 15, prevents its scaling.

As a kind of improved embodiment, the drawing board 2 includes the first plate 18 and the second plate 19 and soft company Tape splicing 17, first plate 18 are internally provided with clockwork spring 20, and company is fixed in one end of the connect band 17 and the side of the second plate 19 Connect, the other end is extend into the first plate 18 from the side of the first plate 18, and is wound up on clockwork spring, and first plate 18 is relative to even The side of tape splicing 17 offers two the first hole clippings 21, and first plate 18 is fixed backwards to the side of the first hole clipping 21 with cross bar 6 Connection, second plate 19 is provided with two the first fixture blocks 22 relative to the side of the first hole clipping 21, when the first plate 18 and second When plate 19 is mutually spliced into drawing board, two the first fixture blocks 22 are embedded into two the first hole clippings 21 correspondingly, clockwork spring volume 20 Connect band 17 is accommodated in the first plate 18 around connect band 17, when drawing board 2, which is packed up, is placed on 1 lower section of seat, due to drawing board 2 Area occupied is too big, not easy to store, so needs to reduce the area occupied of drawing board 2, thus by the first plate 18 and the second plate 19 Setting, the area occupied of drawing board 2 effectively to fold drawing board 2, can be reduced, set between the first plate 18 and the second plate 19 Soft connect band 17 is put, is connected the first plate 18 and the second plate 19 by connect band 17, thus by the setting of connect band 17, just The first plate 18 and the second plate 19 can effectively be spliced, the side that connect band 17 is provided with the first plate 18 has opened up two first cards Hole 21, the second plate 19 has opened up two the first fixture blocks 22 relative to one end of the first hole clipping 21, when needing to use drawing board 2, only First plate 18 and the second plate 19 need to be opened, because the inside of the first plate 18 is provided with clockwork spring 20, clockwork spring 20 can receive connect band 17 The inside of the first plate 18 is reduced to, will so drive two the first fixture blocks 22 of the second plate 19 to be caught in inside the first hole clipping 21, such as This just can will not so make connect band 17 exposed outside by the setting of clockwork spring 20 effectively to shrink connect band 17, Cause the out-of-flatness of drawing board 2, and by the setting of the first hole clipping 21 and the first fixture block 22, can be to fix the first plate 18 and second Plate 19, drawn a picture for user.

As a kind of improved embodiment, the upper side of the first plate 18 and the second plate 19 upper side offers Two circular troughs 23, spring 24, described one end of spring 24 and the bottom of circular trough 23 are provided with inside two circular troughs 23 It is fixedly connected, the other end is provided with the first press strip 25 for pushing down paper, and the downside of the first press strip 25 is close to its both ends Position be connected respectively with two springs 24, when the first press strip 25 pushes down paper, the first press strip 25 and the first plate 18 and second Plate 19, which coordinates, clamps paper, and spring 24 is stretched, and the upper side of drawing board 2 is used to place paper, should be so provided with drawing board 2 The press strip of fixed paper, has opened up two circular troughs 23, in circular trough 23 in the upper side of the first plate 18 and the second plate 19 Spring 24 is set, and spring 24 backwards to one end of circular trough 23 connects the first press strip 25, it is necessary to which paper is placed only need to be with having pulled First press strip 25, now spring 24 be in extended state, unclamp pressing plate after blank sheet of paper is put into, spring 24 is in reset state pressure Firmly blank sheet of paper, prevent blank sheet of paper from moving, because user is in painting process, blank sheet of paper easily hikes up, so the upper side in the second plate 19 The first press strip 25 is also provided with, when a side of blank sheet of paper is fixed on the upper side of the first plate 18, on the second plate of pull-up 19 Press strip, another side of blank sheet of paper is pressed under the press strip of the second plate 19, can be so used for so that blank sheet of paper is secured firmly into drawing board 2 In the FX of fixed paper, when needing to fold on drawing board 2, two the first fixture blocks 22 need to only be drawn out of first hole clipping 21 Send as an envoy to and separated between the first plate 18 and the second plate 19, then the second plate 19 is folded to the top of the first plate 18 again makes the second plate 19 On the first press strip 25 and the top of the first plate 18 it is attracting, pass through the setting of the first press strip 25, it is possible to securely fix paper On drawing board 2, pass through the setting of circular trough 23, it is possible to it is effective to accommodate spring 24, and pass through the setting of spring 24, it is possible to Press strip pull-up is put into paper.

As a kind of improved embodiment, magnet is provided with inside two first press strips 25, when first When the downside of plate 18 is overlapping with the downside of the second plate 19, the magnet in the first plate 18 and the second plate 19 attracts each other, when not When needing to use drawing board 2, two the first fixture blocks 22 need to only be extracted out of first hole clipping 21, then by the first plate 18 and the second plate 19 Downside fitting, now can utilize magnet attraction the first plate 18 and the second plate 19 firmly be held, therefore, pass through magnetic The setting of iron, it is possible to which realization holds the first plate 18 and the second plate 19.

As a kind of improved embodiment, the downside of seat 1 offers buckling groove 29, on the drawing board 2 Be provided with the clamping bar 28 being engaged with buckling groove 29, when the clamping bar 28 is caught in buckling groove 29, drawing board 2 with seat 1 Side is bonded, and when need not use drawing board 2, drawing board 2 is retracted into the downside of seat 1, but because classroom is swept daily, If drawing board 2 is directly hung vertically in the downside of seat 1, drawing board 2 is easily stained with dust, therefore is opened in the downside of drawing board 2 , only need to be by drawing board 2 and chair so when need not use drawing board 2 if buckling groove 29, clamping bar 28 is opened up on drawing board 2 The downside clamping of face 1, such can of drawing board 2 are bonded with the downside of seat 1, and the side that drawing board 2 is bonded with seat 1 is not naked It is exposed, therefore dust will not be accumulated, drawing board 2 has downward gravity with the opposite side that seat 1 is bonded, and dust is also difficult to inhale It is attached to above.

Described 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 schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some 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.

Claims

1. a kind of drawing board chair, including the seat (1) and drawing board (2) of cuboid, the drawing board (2) is connected with seat (1), the chair Face (1) downside is fixedly connected with chair leg (3), and seat (1) upper side has upwardly extended the chair back (4), it is characterised in that：Institute State seat (1) downside and be fixedly connected with carriage (5), the carriage (5) includes chute (7) and draw runner (8), described Chute (7) is fixedly installed on the downside of seat (1), and draw runner (8) sliding is arranged in chute (7), the chute (7) It is arranged on seat (1) center and one end is extended on position of the seat (1) relative to the chair back (4), the other end prolongs backwards to the chair back (4) Stretch, shifting chute (9), length of the shifting chute (9) along chute (7) are offered in the side wall at left and right sides of the chute (7) Direction extends, and the draw runner (8) offers movable block (10) relative to the both sides of shifting chute (9), and the movable block (10) can slide Shifting is arranged in shifting chute (9), and to being arranged on draw runner (8) slip in chute (7), the draw runner (8) is backwards to the chair back (4) one end is hinged with cross bar (6), and the cross bar (6) is fixedly connected backwards to one end of draw runner (8) with drawing board (2).

A kind of 2. drawing board chair according to claim 1, it is characterised in that：Shifting chute (9) one end closing, the other end are set The locating part (11) for preventing movable block (10) from deviating from is equipped with, the locating part (11) is opened relative to the side of mobile fast (10) Provided with stopper slot (26), the movable block (10) is provided with card bead (27) relative to the side of stopper slot (26), works as movable block (10) slide onto shifting chute (9) relative to one end of locating part (11) make card bead (27) be caught in stopper slot (26) it is interior when, the shifting Motion block (10) stops movement.

A kind of 3. drawing board chair according to claim 2, it is characterised in that：Cut with scissors with cross bar (6) one end of the draw runner (8) Connect, one end that the draw runner (8) is hinged with cross bar (6) is provided with card article (13), and the cross bar (6) is relative to the one of card article (13) End is provided with neck (12), and when cross bar (6) is flipped up, the card article (13) is caught in neck (12) and realizes cross bar (6) It is spacing.

A kind of 4. drawing board chair according to claim 3, it is characterised in that：The cross bar (6) includes the first bar (14) and the Two bars (15), described first bar (14) one end is be hinged with draw runner (8), and the other end of first bar (14) is enclosed on the second bar (15) Outside and the second bar (15) can move up and down in the first bar (14), second bar (15) backwards to one end of the first bar (14) with Drawing board (2) is fixedly connected, and the junction of first bar (14) and the second bar (15), which is provided with, fixes the first bar (14) and second The circular fixture (16) of bar (15) height.

A kind of 5. drawing board chair according to claim 4, it is characterised in that：The drawing board (2) includes the first plate (18) and the Two plates (19) and soft connect band (17), first plate (18) are internally provided with clockwork spring (20), the connect band (17) One end is fixedly connected with the side of the second plate (19), and the other end is extend into the first plate (18) from the side of the first plate (18), and It is wound up on clockwork spring, first plate (18) offers two the first hole clippings (21) relative to the side of connect band (17), described First plate (18) is fixedly connected backwards to the side of the first hole clipping (21) with cross bar (6), and second plate (19) is relative to the first card The side in hole (21) is provided with two the first fixture blocks (22), when the first plate (18) is mutually spliced into drawing board with the second plate (19), Two the first fixture blocks (22) are one-to-one to be embedded into two the first hole clippings (21), and clockwork spring (20) winding connect band (17) will even Tape splicing (17) is accommodated in the first plate (18).

A kind of 6. drawing board chair according to claim 5, it is characterised in that：First plate (18) upper side and the second plate (19) upper side offers two circular troughs (23), and spring (24) is provided with inside two circular troughs (23), described Spring (24) one end is fixedly connected with circular trough (23) bottom, and the other end is provided with the first press strip (25) for pushing down paper, First press strip (25) downside is connected with two springs (24) respectively close to the position at its both ends, when the first press strip (25) is pressed Firmly during paper, the first press strip (25) coordinates with the first plate (18) and the second plate (19) clamps paper, and spring (24) is stretched.

A kind of 7. drawing board chair according to claim 6, it is characterised in that：It is respectively provided with inside two first press strips (25) There is magnet, when the downside of the first plate (18) is overlapping with the downside of the second plate (19), the first plate (18) and the second plate (19) Interior magnet attracts each other.

A kind of 8. drawing board chair according to claim 7, it is characterised in that：Seat (1) downside offers buckling groove (29) the clamping bar (28) being engaged with buckling groove (29), is provided with the drawing board (2), when the clamping bar (28) is caught in card In access slot (29), drawing board (2) is bonded with seat (1) downside.