CN103908070B - Portable multi-function drawing bench - Google Patents

Abstract

The invention discloses a portable multifunctional drafting table, which comprises foldable table legs (1) with adjustable height, foldable drafting boards (2) with adjustable angles on the folding table legs (1), foldable drafting boards (2) There are chutes (9) on both sides, and a detachable hovering folding T-square (3) is installed in the chute (9), and a drawer-type full-dimensional folding reading is provided on the upper end of the folding drawing board (2) rack (4). The invention is foldable, occupies less area, is convenient to carry, can also adjust the height, and is convenient to use.

Description

Portable Multifunctional Drafting Table

technical field

The invention relates to a drawing tool table, in particular to a portable multifunctional drawing table.

Background technique

Students majoring in mechanical engineering cannot do without mechanical drawing. As a basic drawing ability, manual drawing is a compulsory course for all students in the mechanical field. Hand-drawn drawings are inseparable from drafting tables, drawing tools and other auxiliary equipment. The traditional drafting table takes up a lot of space, is inconvenient to carry, and the height cannot be adjusted, and the shape is fixed.

Contents of the invention

The object of the present invention is to provide a portable multifunctional drawing table. The invention is foldable, occupies less area, is convenient to carry, can also adjust the height, and is convenient to use.

The technical solution of the present invention is a portable multi-functional drawing table, which is characterized in that it includes foldable table legs with adjustable height, and foldable drawing boards with adjustable angles are arranged on the foldable table legs, and chutes are provided on both sides of the foldable drawing boards , a detachable hovering folding T-square is arranged in the chute, and a drawer-type full-dimensional folding reading shelf is arranged on the top of the folding drawing board; the folding table legs include two legs, and the side of each leg The end is provided with a universal joint connecting rod formed by universal joints, and the ends of the two universal joint connecting rods are connected to each other; the legs include a horizontal cross bar, and the middle part of the horizontal cross bar is provided with a connecting block. The connecting block is provided with a rack and a toothless rack arranged parallel to each other. The outer side of the rack and the toothless rack is covered with a casing. The lower end of the casing is provided with a rotatable connection mechanism. The lower part of the rotatable connection mechanism is provided with a V V-shaped legs, the middle part of the V-shaped legs is provided with a V-shaped leg connecting rod; the shell is provided with a knob device connecting the rack and the universal joint connecting rod; the folding drawing board includes a left panel and a right panel, and the left panel The periphery of the folding drawing board is provided with a folding drawing board left frame that can move relatively horizontally, and the periphery of the right panel is fixed with a folding drawing board right board frame, and the inner side of the folding drawing board left board frame and the folding drawing board right board frame adjacent Plate chain connection, the upper side plate of the left plate frame of the folding drawing board and the upper side plate of the right plate frame of the folding drawing board are connected by a transverse fastening mechanism, and the left and right panels are equipped with telescopic brackets, which are fixed on the On the horizontal bar, the left plate frame of the folding drawing board is provided with a mounting beam, on which a rotating shaft is provided via a rotating shaft support frame, and two clamping mechanisms connected to the left panel are arranged on the rotating shaft, and one end of the rotating shaft Stretch out the upper side plate of the left frame of the folding drawing board and be provided with a clamping knob; and buckle; the hovering type folding T-square includes a level ruler, the two ends of the level ruler are provided with a cantilever short ruler through the cantilever adjustment assembly, and the outer section of the cantilever short ruler is provided with a slider through the slider adjustment stud, and the slider It is arranged in the chute; the horizontal ruler is also provided with a vertical multifunctional ruler via a hovering adjustment component, and a plurality of center buttons are arranged on the vertical multifunctional ruler; The bookshelf drawer in the right panel frame of the folding drawing board is fixed with a folding buckle in the bookshelf drawer, and a full-dimensional vertical rod is connected to the folding buckle. The end of the rotating rod is provided with a full-dimensional rotating part, and the full-dimensional rotating part is also provided with a full-dimensional folding rod after tightening the bolts. The adjusting part and the reading shelf board, the reading shelf board full-angle adjusting part is arranged between the reading shelf board horizontal angle adjusting part and the reading shelf board.

In the aforementioned portable multifunctional drawing table, the ends of the two universal joint connecting rods are connected to each other through an internal and external thread connection mechanism; a folding buckle is provided between the connecting block and the horizontal bar; the rotatable There is also a quick release part between the connecting mechanism and the shell.

In the aforementioned portable multifunctional drawing table, the knob device includes a knob with a spline and a gear shaft with a spline groove, the spline is matched with the spline groove, and the gear shaft is provided with a gear meshed with the rack , the gear shaft is also connected with the connecting rod of the universal joint; the knob is provided with a boss, and the boss is matched with the indexing hole on the shell, and the outside of the knob is provided with a limit screw.

In the aforementioned portable multifunctional drawing table, the middle part of the outer panel of the left panel frame of the folding drawing board and the outer panel of the right panel frame of the folding drawing board are provided with handles; the telescopic support includes a gas spring support The controllable gas springs fixed on the left panel and the right panel are connected with support rods; the clamping mechanism includes a top frame set on the rotating shaft, one end of the top frame is installed on the front support seat The telescopic rod is equipped with an automatic release mechanism, and the other end is connected with a sliding rod with a spring installed on the rear support seat. The end of the sliding rod is provided with a spring support, and the spring support is fixed on the left frame of the folding drawing board. Both sides of the frame are respectively provided with a first cam and a second cam fixed on the rotating shaft, and both the first cam and the second cam are in contact with the top plate of the top frame; the automatic release mechanism includes a L fixed on the left panel. shaped base, the L-shaped base is provided with a release connector, the release connector both sides are provided with fixed pins, and the side ends of the fixed pins are provided with a U-shaped grab hook fixed on the telescopic rod.

In the aforementioned portable multifunctional drawing table, the cantilever adjustment assembly includes a spring post for connecting the short cantilever ruler and the level. The spring is provided with a spring retaining ring on the pressure spring; the hover adjustment assembly includes a ladder slider that can slide in the horizontal ruler, the ladder slider is provided with a hover column, and a vertical multifunctional ruler is arranged on the hover column. There is a hovering knob set on the hovering column above the vertical multifunctional ruler, a hovering spring is set on the hovering column in the hovering knob, and a hovering retaining ring is arranged on the hovering spring; the vertical The multifunctional ruler is provided with a strip hole, and a circular adjustment button is arranged in the strip hole.

In the aforementioned portable multifunctional drawing table, the upper and lower parts of the reading shelf board are provided with a reading shelf board support block; the full-dimensional folding rod is provided with a gas spring, and the piston rod of the gas spring is connected to the full-dimensional rotating part .

In the aforementioned portable multifunctional drawing table, the lower part of the upper and lower angle adjustment parts on the reading shelf is provided with a through hole, and a sheared plastic sleeve is provided in the through hole, and a one-way needle roller bearing is provided in the plastic sleeve. Bolts are inserted into the needle bearings to connect the upper and lower angle adjustment parts on the reading shelf board with the full-dimension folding rods.

In the aforementioned portable multifunctional drawing table, a plastic spacer is provided between the upper and lower angle adjustment parts on the reading shelf board and the full-dimension folding rod.

In the aforementioned portable multifunctional drawing table, the through hole on the upper part of the upper and lower angle adjustment parts of the reading shelf board is connected with the horizontal angle adjustment part of the reading shelf board through the bolt and nut assembly, and the upper and lower angle adjustment parts of the reading shelf board are connected with the parts of the reading shelf. A plastic spacer is provided between the board horizontal angle adjustment parts.

Compared with the prior art, the present invention ingeniously combines height-adjustable folding table legs, adjustable angle folding drawing board, detachable hovering folding T-square and drawer-type full-dimensional folding reading rack, each It is partially foldable, occupies a small area, is easy to carry, and can also be adjusted in height, making it easy to use.

The folding table leg of the present invention rotates the knob, the knob drives the gear shaft to rotate, and the gear on the gear shaft meshes with the rack to rotate, so as to realize the rapid lifting of the rack, and connect the rack and the universal joint connecting rod through the knob device, Only need to adjust the knob on one side to realize synchronous lifting of the two outriggers, which has good coordination, and the boss on the knob cooperates with the indexing hole on the shell to realize self-locking in place, which is convenient to use. The invention can adjust the height to meet different needs of people, and can also be folded to improve the utilization rate of space, and the structure is simple and easy to use. The lifting system of the folding table legs can adjust the height by itself and realize self-locking at any position, which is more in line with humanized design; the structure of the rotatable connection mechanism is reasonable and ingenious. The limit of the limit position makes it fixed and does not rotate.

The angle-adjustable folding drawing board of the present invention supports the left panel and the right panel at the same time through the telescopic bracket and adjusts them to a suitable angle, which is convenient for users, and the left frame of the folding drawing board and the right frame of the folding drawing board can also be folded It is a suitcase, which is easy to carry, and drawing tools, drawings, books and other items can be stored in the box; the clamping mechanism solves the gap problem between the left and right two separated panels, and eliminates the influence of the large gap caused by folding on the drawing to ensure normal operation. use. The invention also has the characteristics of simple implementation structure and convenient use.

The detachable hovering folding T-square of the present invention can quickly disassemble and quickly install the level, hover at any position quickly, or draw a circle of any size. The T-square has mechanisms such as a cantilever short ruler, a level ruler, and a vertical multifunctional ruler. The cantilever short ruler is fixed on the slider to support the level ruler; the slider and the cantilever short ruler are located on both sides of the level ruler, and the slider has a slider adjustment screw. Post, the compression spring is located between the slider adjusting screw and the slider, and the entire ruler is raised by a certain distance from the paper surface. The invention is detachable, takes up little space, provides a vertical reference, hovers quickly to ensure the reliability of the reference, has a simple mechanism, and is convenient to use.

The drawer-type full-dimension folding reading shelf of the present invention adopts a full-dimension angle setting, which satisfies the viewing angle requirements to the greatest extent and conforms to the humanized design. The space utilization rate can be improved, and the reading shelf board and the bracket are folded through a rotatable connection mechanism to achieve the purpose of folding. The full-dimensional vertical rod in the mechanical structure, through the self-locking function of the folding buckle rotation, makes the whole mechanism fold or pull out the bookshelf drawer through rotation. After being folded, the whole mechanism is inside the drawer of the bookshelf, which reduces the occupied space, improves the space utilization rate, and facilitates management. The supporting block of the reading shelf board can also be embedded in the reading shelf board by rotating.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of a foldable table leg;

Fig. 3 is a schematic diagram of the internal structure of the knob device;

Fig. 4 is a schematic diagram of the external structure of the knob device;

Fig. 5 is the structure schematic diagram of the folding drawing board of adjustable angle;

Fig. 6 is a schematic structural view of the clamping mechanism;

Fig. 7 is a schematic structural diagram of a detachable hovering folding T-square;

Fig. 8 is a schematic structural diagram of the cantilever adjustment assembly;

Fig. 9 is a schematic structural diagram of a hover adjustment assembly;

Fig. 10 is a schematic structural view of a vertical multifunctional ruler;

Fig. 11 is a schematic structural view of a drawer-type full-dimensional folding reading shelf;

Figure 12 is a schematic diagram of the internal structure of the full-dimension folding book rack after being folded;

Fig. 13 is a schematic diagram of the folded structure of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

Example. Portable multifunctional drafting table, as shown in Fig. 1-12, includes foldable table leg 1 with adjustable height, foldable drafting board 2 with adjustable angle is arranged on foldable table leg 1, and foldable drawing board 2 is provided on both sides. There is a chute 9, and a detachable hovering folding T-square 3 is arranged in the chute 9, and a drawer-type full-dimensional folding reading shelf 4 is arranged on the upper end of the folding drawing board 2; the folding table legs 1 include two Legs, the side of each leg is provided with a universal joint connecting rod 114 connected by a universal joint, and the ends of the two universal joint connecting rods 114 are connected to each other; the legs include a horizontal bar 101, the middle part of the horizontal bar 101 is provided with a connecting block 103, and the connecting block 103 is provided with a rack 104 and a toothless rack 105 arranged in parallel to each other, and the outer side of the rack 104 and the toothless rack 105 is covered with a casing 106, and the casing The lower end of 106 is provided with rotatable connecting mechanism 109, and the bottom of rotatable connecting mechanism 109 is provided with V-shaped leg 110, and the middle part of V-shaped leg 110 is provided with V-shaped leg connecting rod 111; The knob device 108 of the rack 104 and the universal joint connecting rod 114; the folding drawing board 2 includes a left panel 212 and a right panel 221, and the left panel 212 is provided with a folding drawing board left plate frame 211 which can move relatively horizontally , the periphery of the right panel 221 is fixed with the folding drawing board right board frame 205, the folding drawing board left board frame 211 and the adjacent inner board of the folding drawing board right board frame 205 are connected through the drawing side board chain 213, and the folding drawing board left board frame The upper side plate of 211 and the upper side plate of the right plate frame 205 of the folding drawing board are connected through a horizontal fastening mechanism 206, and the left panel 212 and the right panel 221 are provided with telescopic brackets, and the telescopic brackets are fixed on the horizontal bar 101 , the left plate frame 211 of the folding drawing board is provided with a mounting beam, the mounting beam is provided with a rotating shaft 209 via a rotating shaft support frame 210, and the rotating shaft 209 is provided with two clamping mechanisms 208 connected to the left panel 212, One end of the rotating shaft 209 protrudes from the upper side plate of the folding drawing board left frame 211 and is provided with a clamping knob 207; The loop 215 and the buckle 202 that cooperate with each other are respectively provided; the hovering type folding T-square 3 includes a level ruler 307, and the two ends of the level ruler 307 are provided with a cantilever short ruler 303 through the cantilever adjustment assembly, and the cantilever short ruler 303 The outer section is provided with a slide block 301 through the slide block adjustment stud 302, and the slide block 301 is arranged in the chute 9; the horizontal ruler 307 is also provided with a vertical multifunctional ruler 308 through the hover adjustment assembly, and the vertical multifunctional ruler 308 is provided with a plurality of center-of-circle buttons 315; the full-dimension folding reading shelf 4 includes a bookshelf drawer 401 arranged in the right panel frame 205 of the folding drawing board through rollers 5, and a folding buckle 402 is fixed in the bookshelf drawer 401, and the folding buckle 402 is connected with a full-dimensional vertical rod 403, the upper end of the full-dimensional vertical rod 403 is provided with a folded full-dimensional rotating rod 405 through a bolt 404, and the full-dimensional rotating rod 405 The end of the full-dimensional rotating part 406 is provided with a full-dimensional rotating part 406, and the full-dimensional rotating part 406 is also provided with a full-dimensional folding rod 408 after tightening the bolt 407. The horizontal angle adjustment part 410 of the shelf board and the reading shelf board 411, and the full-angle adjustment part 413 of the reading shelf board is arranged between the horizontal angle adjustment part 410 of the reading shelf board and the reading shelf board 411.

The ends of the two universal joint connecting rods 114 are connected to each other through an internal and external thread connection mechanism 113; a folding buckle 102 is provided between the connecting block 103 and the horizontal bar 101; the rotatable connection mechanism 109 A quick release part 112 is also provided between the housing 106 .

The knob device 108 includes a knob 115 with a spline 120 and a gear shaft 118 with a spline groove 117, the spline 120 cooperates with the spline groove 117, and the gear shaft 118 is provided with a gear meshed with the rack 104 119, the gear shaft 118 is also connected with the universal joint connecting rod 114; the knob 115 is provided with a boss 116, and the boss 116 cooperates with the indexing hole 121 on the casing 106, and the outside of the knob 115 is provided with a limit screw 107.

The middle part of the outer plate of the left plate frame 211 of the folding drawing board and the outer plate of the right plate frame 205 of the folding drawing board is provided with a handle 201; And the controllable gas spring 204 on the right panel 221, the controllable gas spring 204 is connected with a support rod 203; the clamping mechanism 208 includes a top frame 220 sleeved on the rotating shaft, and one end of the top frame 220 is supported by the front end The telescoping bar on the seat 222 is provided with automatic release mechanism, and the other end is connected with the slide bar 226 that is installed on the rear support seat 224 with spring, and the end of slide bar 226 is provided with spring support 227, and spring support 227 is fixed on On the left plate frame 211 of the folding drawing board, the two sides of the top plate frame 220 are respectively provided with a first cam 223 and a second cam 225 fixed on the rotating shaft 209, and the first cam 223 and the second cam 225 are all connected with the top plate frame 220. Top plate contact; the automatic release mechanism includes an L-shaped base 216 fixed on the left panel, the L-shaped base 216 is provided with a release connector 217, and both sides of the release connector 217 are provided with fixed pins 219, and the sides of the fixed pin 219 The end is provided with a U-shaped grab hook 218 fixed on the telescopic rod.

The cantilever adjustment assembly includes a spring column 304 for connecting the cantilever short ruler 303 and the level 307, the spring column 304 is provided with a cantilever short ruler knob 306, and the cantilever short ruler knob 306 is provided with a compression spring 313 sleeved on the spring column 304 , the pressure spring 313 is provided with a spring retaining ring 305; the hover adjustment assembly includes a ladder slider 312 that can slide in the level 307, the ladder slider 312 is provided with a hover column 309, and the hover column 309 is Vertical multifunctional ruler 308 is set, and the hovering knob 311 that is sleeved on the hovering column 309 is arranged above the vertical multifunctional ruler 308, and the hovering spring 314 that is enclosed within on the hovering column 309 is provided in the hovering knob 311, hovering The spring 314 is provided with a hover stop ring 310; the vertical multi-function ruler 308 is provided with a bar-shaped hole, and a circular adjustment button 316 is arranged in the bar-shaped hole.

The lower part of the upper surface of the reading shelf plate 411 is provided with a reading shelf plate supporting block 412; the full-dimension folding rod 408 is provided with a gas spring 414, and the piston rod of the gas spring 414 is connected to the full-dimension

The lower part of the upper and lower angle adjustment member 409 on the reading shelf is provided with a through hole, and a cut plastic sleeve is provided in the through hole, and a one-way needle roller bearing is arranged in the plastic sleeve, and a bolt is interspersed in the one-way needle roller bearing. The upper and lower angle adjustment parts on the reading shelf board are connected with the full-dimension folding rod.

A plastic spacer is provided between the upper and lower angle adjustment parts on the reading shelf board and the full-dimension folding rod.

The through hole on the upper and lower angle adjustment parts 409 on the reading shelf board is connected to the horizontal angle adjustment part of the reading shelf board through the bolt and nut assembly, and the upper and lower angle adjustment parts on the reading shelf board and the horizontal angle adjustment parts of the reading shelf board are provided. There are plastic spacers.

The left panel 212 is provided with an automatic pencil sharpener 10; the foldable drawing board right frame 205 lower side panel is provided with a handle 7 and a drawing storage drawer 6; Drawer storage drawer 8 is provided on the side panel.

The present invention is used as follows: from the unfolded drafting table folded into a case. First put the unfinished drawings in the paper tube, put the finished drawings in the drawing storage drawer; Down, and finally placed inside the box; pencils and drawing tools are stored in the drawing tool storage drawer; loosen the internal and external thread connection mechanism to separate the left and right sides, turn the knob to make the rack to the lowest state, and pull the V-shaped leg connecting rod , make the V-shaped legs close together, loosen and take down the quick-release parts, make the rotatable connection mechanism and its lower part rotate around the axis, toggle the levers in the folding buckle-horizontal part and the folding buckle-vertical part, so that from the limit When the state reaches another limit state, the folding of the folding buckle is completed, and the above process is completed to realize from the unfolded state to the folded state; the switch of the controllable gas spring is turned off, the support rod is shrunk on the inner side of the plate frame, and the switch is closed. Flip the left panel to make it close with the right panel of the folding drawing board, and then fasten the buckle and the hasp ring, and the user can decide the suitcase or backpack according to the use.

The height-adjustable folding table leg of the present invention is used as follows: the first step is from the unfolded state to the folded state. Loosen the internal and external thread connection mechanism to separate the left and right sides, turn the knob to make the rack to the lowest state, pull the V-shaped leg connecting rod to make the V-shaped legs close together, loosen and take off the quick release parts, and make the rotatable connection The mechanism and its lower part rotate around the axis, and the rods in the folding buckle-horizontal part and the folding buckle-vertical part are moved, so that the folding of the folding buckle is completed from this limit state to another limit state, and the above process is completed. Expanded state to collapsed state.

In the second step, from the folded state to the unfolded state, toggle the lever in the folding buckle to move from this state to another extreme state, rotate the V-shaped leg, fix the V-shaped leg and the rotatable connection mechanism with a quick release, and dial Open the V-legs to the limit. Then connect the universal joint, the universal joint connecting rod, and the internal and external thread connection mechanism, turn the knob, and the rotating force will make the left and right sides rise simultaneously through the universal joint and the universal joint connecting rod. Completing the above process is to realize the transition from the folded state to the unfolded state.

The angle-adjustable folding drawing board of the present invention is used as follows: the folded drawing board is unfolded into a drawing table. First loosen the hasp and the hasp ring; turn over the left panel so that the unfolded left and right panels are at the same level, make the ring hook on the horizontal fastening mechanism fasten the shackle, turn the wrench and fasten it. Turn off the switch of the controllable gas spring, turn the support rod to an appropriate angle, and close the switch.

The second step is the clamping process. In the initial state, the spring on the sliding rod has no elastic deformation; by turning the clamping knob, the rotation of the first cam and the second cam makes the top plate frame move to the right under the action of the spring, and the U-shaped grab hook also follows It moves to the right, so that the L-shaped base fixed on the left panel also moves accordingly, so that the left panel moves close to the right panel when the left panel frame of the folding drawing board is folded, and the slit is narrowed, and the left panel is made under the action of the spring. Clamps with the right panel.

The third step is the release process. When the first cam and the second cam continue to be rotated, the first cam and the second cam open the top frame to move the top frame to the left, and the U-shaped grapple also moves to the left to push the L-shaped base, and then the left panel is moved to the left. Reset release.

The fourth step is to fold the unfolded drawing board into a handbag. Turn off the switch of the controllable gas spring, shrink the support rod to the inner side of the plate frame, and close the switch. Turn the left panel over to close with the right panel of the folded drawing board, and fasten the buckle and the hasp.

The detachable hovering folding T-square of the present invention is used as follows: the first step is to install a horizontal ruler and a vertical multifunctional ruler. Rotate the knob of the cantilever short ruler so that its outer contour is the same as that of the holes on both sides of the level, and then press the level into the knob of the cantilever short ruler. Raise the cantilever short ruler knob, press the spring to compress it, and then rotate the cantilever short ruler knobs on both sides, so that the outer contour of the cantilever short ruler knob overlaps with the hole profiles on both sides of the level. Then embed the hole profile of the vertical multifunctional ruler into the outer contour of the hovering knob, raise the hovering knob, and rotate the hovering knob at the same time, so that the hovering knob and the hole profile of the vertical multifunctional ruler are in a vertical state.

The second step is to move and hover the vertical multi-function ruler. Press down the hover stop ring, and the vertical multi-function ruler can move freely in the hole groove of the level ruler. When moving to the desired position, loosen the hover stop ring, and the vertical multi-function ruler is fixed at this position.

The third step is to disassemble the vertical multifunctional ruler and draw a circle of any size. Rotate the hovering knob so that the outer contour of the hovering knob is the same as the hole profile of the vertical multifunctional ruler, and take out the vertical multifunctional ruler. Determine the position of the center of the circle in the drawing, press the center button to coincide with the position of the center of the circle, and then choose whether it is an equidistant hole or a strip hole according to the size of the circle. If drawing a circle of integer size, insert the tip of the pen into the hole of the corresponding size, rotate the pen around the center button once, and draw a circle of integer size; if drawing a circle of non-integer size, adjust the circle adjustment button to the desired size, Put the tip of the pen close to the circle adjustment button, rotate the pen around the center button once, and draw a circle with a non-integer size.

The drawer-type full-dimension folding reading shelf of the present invention is used as follows: the first step is from the unfolded state to the folded state. First, press and hold the self-locking button of the folding buckle to rotate the full-dimensional pole into the inside of the bookshelf drawer. Next, rotate the full-dimension swivel rod to fit it all inside the bookshelf drawer. Then hold the reading shelf board with both hands, put the full-dimensional rotating parts, full-dimensional folding rods and other full-dimensional brackets into the inside of the bookshelf drawer, and make the reading shelf board completely embedded in the bookshelf drawer. Finally, the supporting block of the reading shelf board is embedded in the reading shelf board. Completing the above process is to realize the transition from the unfolded state to the folded state.

The second step is from the collapsed state to the unfolded state. First, pull the book shelf board out of the bookshelf drawer. Next, rotate the full-dimension pole until the folding clasp locks itself, keeping it in place. Then, unfold the reading shelf board support block. Finally, by adjusting the full-dimensional bracket, you can get any position you want to place the book shelf. Completing the above process is to realize the transition from the folded state to the unfolded state.

Claims (9)

1. portable multi-function drawing bench, it is characterized in that: comprise height-adjustable collapsible table leg (1), collapsible table leg (1) is provided with the folding draughting board (2) of adjustable-angle, folding draughting board (2) both sides are provided with chute (9), be provided with dismountable floating type folding T-square (3) in chute (9), folding draughting board (2) upper end is provided with the full dimension folding reading rack (4) of drawer type, described collapsible table leg (1) comprises two supporting legs, and the sidepiece of every bar supporting leg is provided with the universal joint connecting rod (114) be formed by connecting by universal joint, and the end of two universal joint connecting rods (114) is interconnected, described supporting leg comprises horizontal cross bar (101), the middle part of horizontal cross bar (101) is provided with contiguous block (103), contiguous block (103) is provided with tooth bar (104) arranged in parallel and without gear rack (105), tooth bar (104) and without gear rack (105) outside cover have shell (106), the lower end of shell (106) is provided with rotatable bindiny mechanism (109), the bottom of rotatable bindiny mechanism (109) is provided with V-type leg (110), and the middle part of V-type leg (110) is provided with V-type leg connecting rod (111), described shell (106) is provided with the knob assembly (108) connecting tooth bar (104) and universal joint connecting rod (114), described folding draughting board (2) comprises left panel (212) and right panel (221), the periphery of left panel (212) is provided with can the left sheet frame of folding draughting board (211) of relative level movement, the periphery of right panel (221) is fixed with folding draughting board right panel frame (205), the interior plate that the folding left sheet frame of draughting board (211) is adjacent with folding draughting board right panel frame (205) is connected through drawing side plate chain (213), connect through horizontal fastening mechanism (206) between the epipleural of the folding left sheet frame of draughting board (211) and the epipleural of folding draughting board right panel frame (205), left panel (212) and right panel (221) are equipped with telescope support, telescope support is fixed on horizontal cross bar (101), the described left sheet frame of folding draughting board (211) is provided with mounting rail, mounting rail is provided with rotating shaft (209) through rotating shaft bracing frame (210), rotating shaft (209) is provided with two clamp systems (208) connecting left panel (212), rotating shaft (209) one end is stretched out the epipleural of the left sheet frame of folding draughting board (211) and is provided with clamping knob (207), the outer panel of the described left sheet frame of folding draughting board (211) and the outer panel of folding draughting board right panel frame (205) are respectively equipped with the staple (215) and hasp (202) that cooperatively interact, and described left panel (212) is provided with automatic pencil sharpener (10), described floating type folding T-square (3) comprises horizon rule (307), the both ends of horizon rule (307) are provided with the short chi of cantilever (303) through cantilever adjusting part, the segmentum laterale of the short chi of cantilever (303) regulates stud (302) to be provided with slide block (301) through slide block, and slide block (301) is arranged in chute (9), described horizon rule (307) is also provided with vertical multifunctional ruler (308) through hovering adjusting part, and vertical multifunctional ruler (308) is provided with multiple centers of circle button (315), described full dimension folding reading rack (4) comprises the bookshelf drawer (401) be arranged on through roller (5) in folding draughting board right panel frame (205), bookshelf drawer (401) internal fixtion has folding fastener (402), folding fastener (402) is connected with full dimension vertical rod (403), the upper end of full dimension vertical rod (403) is provided with the full dimension swingle (405) of folding shape through bolt (404), the end of full dimension swingle (405) is provided with full dimension revolving part (406), full dimension revolving part (406) is also provided with full dimension pole (408) through tight a bolt (407), the end of full dimension pole (408) is connected with the reading upper and lower angle adjusting piece of frame plate (409) in turn, reading-rack plate level angle adjusting piece (410) and reading frame plate (411), reading frame plate full angle regulating part (413) is provided with between described reading-rack plate level angle adjusting piece (410) and reading frame plate (411).

2. portable multi-function drawing bench according to claim 1, is characterized in that: the end of described two universal joint connecting rods (114) is interconnected through internal and external threads bindiny mechanism (113); Folding fastener (102) is provided with between described contiguous block (103) and horizontal cross bar (101); Fast detachable unit (112) is also provided with between described rotatable bindiny mechanism (109) and shell (106).

3. portable multi-function drawing bench according to claim 2, it is characterized in that: described knob assembly (108) comprises the knob (115) of band spline (120) and the gear shaft (118) of band spline (117), described spline (120) coordinates with spline (117), described gear shaft (118) is provided with and tooth bar (104) meshed gears (119), and gear shaft (118) is also connected with universal joint connecting rod (114); Described knob (115) is provided with boss (116), boss (116) coordinates with the index hole (121) on shell (106), and described knob (115) outside is provided with stop screw (107).

4. portable multi-function drawing bench according to claim 1, is characterized in that: the middle part of the outer panel of the described left sheet frame of folding draughting board (211) and the outer panel of folding draughting board right panel frame (205) is equipped with handle (201), described telescope support comprises the controllable gas spring (204) be fixed on through air spring support member (214) in left panel (212) and right panel (221), and controllable gas spring (204) is connected with support bar (203), described clamp system (208) comprises cover top board frame (220) on the rotary shaft, top board frame (220) one end is provided with automatic releasing mechanism through the extension stem be arranged on front support seat (222), the other end is connected with the slider bar (226) being arranged on rear end supporting seat (224) upper band spring, the end of slider bar (226) is provided with spring fastening (227), spring fastening (227) is fixed on the left sheet frame of folding draughting board (211), the both sides of top board frame (220) are respectively equipped with and are fixed on the first cam (223) on rotating shaft (209) and the second cam (225), first cam (223) and the second cam (225) all with the top plate contact of top board frame (220), described automatic releasing mechanism comprises the L shape base (216) be fixed on left panel, L shape base (216) is provided with release connection part (217), release connection part (217) both sides are provided with steady pin (219), and the side of steady pin (219) is provided with the U-shaped grapple (218) be fixed on extension stem.

5. portable multi-function drawing bench according to claim 1, it is characterized in that: described cantilever adjusting part comprises the spring stack (304) for the short chi of connecting cantilever (303) and horizon rule (307), spring stack (304) is provided with the short chi knob (306) of cantilever, be provided with the pressing spring (313) be enclosed within spring stack (304) in the short chi knob (306) of cantilever, pressing spring (313) is provided with spring baffle ring (305); Described hovering adjusting part comprises the ladder slide block (312) that can slide in horizon rule (307), ladder slide block (312) is provided with hovering post (309), hovering post (309) arranges vertical multifunctional ruler (308), vertical multifunctional ruler (308) top is provided with the hovering knob (311) be enclosed within hovering post (309), be provided with the hovering spring (314) be enclosed within hovering post (309) in hovering knob (311), hovering spring (314) is provided with hovering baffle ring (310); Described vertical multifunctional ruler (308) is provided with bar hole, is provided with round adjusting knob (316) in bar hole.

6. portable multi-function drawing bench according to claim 1, is characterized in that: described reading frame plate (411) upper surface bottom is provided with reading frame plate back-up block (412); Described full dimension pole (408) is provided with air spring (414), and the piston rod of air spring (414) is connected with full dimension revolving part (406).

7. portable multi-function drawing bench according to claim 6, it is characterized in that: the bottom of the described upper and lower angle adjusting piece of reading frame plate (409) is provided with through hole, the plastic sleeve cut off is provided with in through hole, be provided with unidirectional needle bearing in plastic sleeve, be interspersed with bolt in unidirectional needle bearing and the upper and lower angle adjusting piece of reading frame plate is connected with full dimension pole.

8. portable multi-function drawing bench according to claim 6, is characterized in that: be provided with plastic spacer between the described upper and lower angle adjusting piece of reading frame plate and full dimension pole.

9. portable multi-function drawing bench according to claim 6, it is characterized in that: the through hole on the described upper and lower angle adjusting piece of reading frame plate (409) top makes it be connected with reading-rack plate level angle adjusting piece through bolt and nut component, between the reading upper and lower angle adjusting piece of frame plate and reading-rack plate level angle adjusting piece, be provided with plastic spacer.