CN103653746B - Folding type multi-purpose combination drawing tables and chairs - Google Patents

Abstract

The invention discloses a foldable multipurpose combined drawing table and chair, which comprises a main body and a seat; the main body can be transformed into a desk and chair, a mechanical drawing table and chair, a drawing board type table and chair, a convenient square table and a suitcase; The design structure of the foldable multi-purpose combination drawing table and chair is reasonable, and the design idea is novel. Through various folding combinations, various structural forms can be transformed, which are respectively: a desk and chair structure, a mechanical drawing table and chair structure, and an art drawing table. Chair structure, convenient square table structure, portable suitcase structure, etc., are easy to carry and meet people's various needs. Especially for schools, this folding multi-purpose combined drawing table and chair is suitable for indoor and outdoor teaching and outdoor drawing. In addition, the The foldable multi-purpose combination drawing table and chair is also suitable for a convenient square table during field trips.

Description

Foldable multi-purpose combined drawing table and chair

technical field

The invention relates to a multi-purpose combined desk and chair, in particular to a folding multi-purpose combined drawing desk and chair which can be transformed into a desk and chair, a mechanical drawing desk and chair, a drawing board-type desk and chair, a convenient square table and a suitcase.

Background technique

At present, in many schools, the desks and chairs of students are almost all in the classroom. For some outdoor teaching, these desks and chairs will appear to be difficult to carry. In addition, for some mechanical drawing people, the drawing size measurement during drawing seems a bit cumbersome, which reduces the drawing efficiency; Now it is more common to combine drawing with drawing boards and drawing boards, and even some students will bring some small chairs. The variety of these items is somewhat inconvenient to carry. For this reason, we have developed a folding multi-purpose combined drawing desk and chair that can be transformed into a desk and chair, a mechanical drawing desk and chair, a drawing board desk and chair, a convenient square table, and a suitcase.

Contents of the invention

The purpose of the present invention is to provide a folding multi-purpose combined drawing desk and chair that can be transformed into desks and chairs, mechanical drawing desks and chairs, drawing board formula desks and chairs, convenient square tables and suitcases in order to overcome the deficiencies in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: a foldable multi-purpose combined drawing table and chair, including a main body and a seat; , handle rod, base plate, side plate, pin shaft 1, connecting rod 1, connecting block 1, connecting block 2, connecting block 3, manual bolt, bayonet pin 1, extension rod, semicircular end cap, handle end cap, spring end Cover, spring, bayonet pin 2, hinge, bayonet block, control rod, slide bar, chute block, fixed block 1, fixed block 2; the seat includes supporting feet, two restraining rods, and two supporting rods , connecting block four, connecting block five, connecting block six, connecting rod two, connecting rod three, fixed rod one, fixed rod two, seat panel and bolt; Shaft 1 is connected to the scale table respectively, connecting block 1 is fixed on the scale panel by bolts, and the chute rod and the adjustment rod are pressed and fixed to each other by manual bolts; the front outrigger is connected to the chute rod, and The manual bolt and the connecting rod assembled between the two front outriggers are compressed and fixed, and a bayonet pin is installed between the manual bolt and the chute rod, which is used to change the angle between the chute rod and the front outrigger Size, in the inner groove of the front outrigger, an extension rod is installed, through the chute on the front outrigger and using the manual bolt to control the extension length of the extension rod; The compression constraint between the end caps is used to fix the connection between the adjusting rod and the rear outrigger; the bottom plate is connected with the scale panel through the connection block 2 and the connection block 3, and the connection block 2 and the connection block 3 are respectively fixed on the Scale desktop and bottom plate; both ends of the handle rod are equipped with handle end caps, which are fixed on the connection block two and connection block three through the handle end caps, and the two connection blocks two and connection block three are assembled together, The handle end caps on both sides are equipped with bayonet two, the relative position between the connection block two and the connection block three is changed through the holes on the connection block two and the connection block three, a spring is sleeved on the handle end cap, and The other end of the handle end cover is equipped with a spring end cover, which is used to constrain the position of the spring and play the role of pressing the bayonet pin 2; the side plate is connected with the bottom plate through a hinge, and is controlled by a slot block, rod, slide rod, and chute block to control the relative position to the bottom plate; there are two fixed blocks one and two fixed blocks two fixed on the scale panel by bolts, which are used to fix the folded seat chair; the supporting legs are respectively connected by connecting rod two, fixed rod one, connecting rod three and fixed rod two, and are connected with the seat panel by connecting block five, connecting block six and bearing pin one respectively, and the connecting block Five and connecting block six are fixed on the seat panel by bolts; one end of the restraining rod is connected with the seat panel through connecting block four and pin two, and the other end is connected with connecting rod two and connecting rod three for Control the opening and folding of the supporting feet, the connecting block four is fixed on the seat panel by bolts; the support rod is fixed on the seat panel by bolts to support the seat panel; the fixed rod one and the fixed Rod two connects two supporting feet, and is fixed in the fixed block one and the fixed block two on the scale panel after the seat is folded.

Preferably, the connection between the chute rod and the adjustment rod is pressed and fixed by the manual bolt, and the position of the manual bolt is moved through the chute on the chute rod to change the angle between the chute rod and the adjustment rod, so that the angle between the chute rod and the adjustment rod can be changed. The inclination angle of the scale panel is the inclination angle of the entire drawing panel. In addition, loosen the manual bolt on the front leg to extend the extension rod outward and press it to fix it. At this time, the inclination angle of the scale desktop can also be changed.

Preferably, scales are marked on the left edge and the lower edge of the scale panel, which is convenient for students to draw mechanically.

Preferably, the slide bar slides in the slide block, the control rod is connected with one end of the slide bar through a bolt, and can rotate around the slide bar, and the control rod can coincide with the two slots of the slot block respectively, They are respectively used to fix the vertical or coplanar relative positions of the side plate and the bottom plate.

Preferably, the folded seat is fixed in the fixed block 1 and the fixed block 2 of the folded table body through the fixed rod 1 and the fixed rod 2, and a pair of parallel surfaces on the fixed rod 2 can reinforce the folded seat and Connectivity of the table body.

Preferably, after the folded table body and the seat are fixedly connected, a portable luggage structure can be formed, and people can carry the foldable multi-purpose combined drawing table and chair by carrying the handle bar.

Preferably, the bayonet one is used to coincide with the opening on the chute bar and the front leg, and is used to fix and change the angle between the chute bar and the front leg.

Preferably, the largest restraining angles are formed between the two adjustment rods and the two rear legs, and between the two front legs of the two chute rods through their respective semi-convex circular truncated structures.

Preferably, the bayonet pin 2 is adjusted to coincide with the holes of the connection block 2 and the connection block 3, so that the bottom plate and the scale panel can maintain a parallel or coplanar positional relationship.

Preferably, the control rod can rotate around one end of the slide rod, and the use of the keyway structure can make the side plate and the bottom plate fixed on the same plane, slide the control rod along the direction of the chute, so that the rotation point on the slide rod is in line with the control The chute on the rod is relatively dislocated, so as to prevent the control rod from being vertically downward due to the influence of gravity, which will affect the coplanar stability of the side plate and the bottom plate.

Compared with the prior art, the present invention has the advantages of: the folding multi-purpose combined drawing table and chair described in the present invention has a reasonable design structure and novel design ideas, and various structural forms can be transformed through various folding combinations, which are respectively : Desk and chair structure, mechanical drawing table and chair structure, art drawing table and chair structure, convenient square table structure, portable suitcase structure, etc., easy to carry and meet people's various needs, especially for schools, this folding multi-purpose combination drawing The table and chair are suitable for indoor and outdoor teaching and outdoor drawing. In addition, the foldable multi-purpose combination drawing table and chair is also suitable for a convenient square table during field trips.

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the schematic diagram when the main body is used as a desk in the foldable multipurpose combined drawing desk and chair of the present invention;

Accompanying drawing 2 is the structural representation of the seat in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 3 is the schematic diagram when main body is made mechanical drawing table in the foldable multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 4 is the schematic diagram when the main body of the folding multi-purpose combined drawing table and chair of the present invention is used as an outdoor drawing board table;

Accompanying drawing 5 is the schematic diagram when the main body in the foldable multi-purpose combined drawing table and chair of the present invention is used as an art drawing table;

Accompanying drawing 6 is the schematic diagram when main body is made convenient square table in the foldable multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 7 is the schematic diagram when the main body in the foldable multi-purpose combined drawing table and chair of the present invention is used as a portable suitcase;

Accompanying drawing 8 is the structure diagram when the main body is folded in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 9 is the structure diagram when the seat is folded in the folding multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 10 is the exploded schematic diagram of the connection structure between the adjustment rod and the rear outrigger in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 11 is the fixing structure diagram of bayonet one and front outrigger and chute bar in folding multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 12 is the explosion schematic diagram of bayonet one, front outrigger and chute bar in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 13 is the structural schematic diagram when the bottom plate and the side plate of the folding multi-purpose combined drawing desk and chair of the present invention are vertical;

Accompanying drawing 14 is the structural schematic diagram when the bottom plate and the side plate of the folding multi-purpose combined drawing desk and chair according to the present invention are in the same plane;

Accompanying drawing 15 is the explosion schematic diagram of the combined structure of connecting block 2 and connecting block 3 in the foldable multi-purpose combined drawing desk and chair of the present invention

Accompanying drawing 16 is the structural schematic diagram of the middle-scale desktop of the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 17 is the enlarged view of A part in accompanying drawing 16;

Accompanying drawing 18 is the schematic diagram of the structure of the chute rod in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 19 is the structural schematic diagram of the adjusting rod in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 20 is the rear outrigger structure schematic diagram of folding multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 21 is the schematic diagram of the structure of the extension rod in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 22 is the schematic diagram of the structure of the front outrigger in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 23 is the schematic diagram of the structure of the second connecting block in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 24 is the schematic diagram of the third structure of the connecting block in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 25 is a structural schematic diagram of the bayonet in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 26 is the schematic diagram of the structure of bayonet 2 in the folding multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 27 is the schematic diagram of the structure of the handle bar in the folding multi-purpose combined drawing table and chair of the present invention;

Fig. 28 is a schematic diagram of the structure of the handle end cover in the folding multi-purpose combined drawing table and chair according to the present invention;

Accompanying drawing 29 is a schematic diagram of the structure of the connecting block in the folding multi-purpose combined drawing desk and chair according to the present invention;

Accompanying drawing 30 is the structural diagram of the slot block in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 31 is the structural schematic diagram of the control lever in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 32 is the schematic diagram of the manual bolt structure in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 33 is the schematic diagram of the structure of the semicircular end cover in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 34 is the schematic diagram of the structure of the supporting legs in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 35 is the schematic diagram of the four connecting blocks in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 36 is the schematic diagram of the structure of the support rod in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 37 is the schematic diagram of the structure of connecting block 5 in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 38 is the schematic diagram of the six connecting blocks in the folding multi-purpose combined drawing table and chair of the present invention;

Accompanying drawing 39 is the schematic diagram of the structure of the restraining rod in the foldable multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 40 is the schematic diagram of the structure of the second connecting rod in the folding multi-purpose combined drawing desk and chair of the present invention;

Accompanying drawing 41 is the schematic diagram of the structure of the second fixed rod in the foldable multi-purpose combined drawing desk and chair of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Accompanying drawing 1-41 is the foldable multi-purpose combined drawing desk and chair of the present invention, comprises main body and seat; Said main body comprises scale desktop 7, chute rod 5, adjustment rod 19, front leg 23, rear Outrigger 1, handle rod 15, bottom plate 20, side plate 18, pin shaft 16, connecting rod 1 4, connection block 1 17, connection block 2 11, connection block 3 14, manual bolt 22, bayonet pin 1 21, extension Rod 3, semicircular end cap 2, handle end cap 12, spring end cap 8, spring 9, bayonet pin 2 10, hinge 24, slot block 26, control rod 25, slide rod 28, chute block 27, fixed block 1 6. Fixed block two 13, the seat includes supporting feet 39, two restraining rods 38, two supporting rods 30, connecting block four 34, connecting block five 33, connecting block six 29, connecting rod two 35, connecting Bar three 40, fixed rod one 36, fixed rod two 37, seat panel 32 and bolt. Described chute bar 5 and adjusting bar 19 are connected with scale desktop 7 respectively by connecting block one 17 and bearing pin one 16, and connecting block one 17 is fixed on the scale panel 7 by bolt, and chute bar 5 and adjusting bar 19 , and are pressed and fixed with each other by manual bolts 22; the front legs 23 are connected with the chute rod 5, and pressed and fixed by the manual bolts 22 and the connecting rod-4 assembled between the two front legs 23 A bayonet pin 21 is assembled between the manual bolt 22 and the chute bar 5 to change the angle between the chute bar 5 and the front leg 23. In the inner groove of the front leg 23, a An extension rod 3 passes through the chute on the front leg 23 and uses a manual bolt 22 to control the extension length of the extension rod 3; Tight constraints to fix the connection between the adjusting rod 19 and the rear leg 1; the base plate 20 is connected with the scale panel 7 through the connecting block two 11 and the connecting block three 14, and the connecting block two 11 and the connecting block three 14 are respectively connected by bolts It is fixed on the scale desktop 7 and the bottom plate 20; the two ends of the handle bar 15 are equipped with handle end caps 12, and are fixed on the connection block two 11 and the connection block three 14 through the handle end cap 12, and the two connection blocks The second 11 and the third connection block 14 are assembled together, and the handle end caps 12 on both sides are equipped with bayonet two 10, and the connection block two 11 and the connection block are changed through the holes on the second connection block 11 and the third connection block 14 The relative position between the three 14, the handle end cap 12 is covered with a spring 9, and the other end of the handle end cap 12 is equipped with a spring end cap 8, which is used to constrain the position of the spring 9, so as to compress the bayonet pin 2 The role of 10; the side plate 18 is connected to the bottom plate 20 through a hinge 24, and the relative position to the bottom plate 20 is controlled by an assembly composed of a slot block 26, a control rod 25, a slide bar 28, and a chute block 27 There are also two fixed blocks one 6 and two fixed blocks two 13 fixed by bolts on the scale panel 7, which are used to fix the folded seat. Described supporting foot 39 is connected by connecting rod two 35, fixed rod one 36 and connecting rod three 40, fixed rod two 37 respectively, and respectively through connecting block five 33 and connecting block six 29 and bearing pin one 16 and seat The panels 32 are connected, and the connecting block five 33 and the connecting block six 29 are fixed on the seat panel 32 by bolts; one end of the restraining rod 38 is connected with the seat panel 32 through the connecting block four 34 and the pin shaft two 31, and the other One end is connected with connecting rod two 35 and connecting rod three 40, and is used to control the opening and folding of the support pin 39. The connecting block four 34 is fixed on the seat panel 32 by bolts; the support rod 30 is fixed on the seat panel by bolts. On the seat panel 32, it is used to support the seat panel 32; the fixed rod one 36 and the fixed rod two 37 are connected to two supporting feet 39, and are fixed on the fixed block one 6 on the scale panel 7 after the seat is folded And in the fixed block two 13. Described chute bar 5, adjusting bar 19, front support leg 23, rear support leg 1 quantity all is 2, and is symmetrical structure between them both; The quantity of the support foot 39 of described seat is 4, and The four supporting feet 39 are two pairs of symmetrical structures.

Press and fix the connection between the chute rod 5 and the adjustment rod 19 by the manual bolt 22, move the position of the manual bolt 22 through the chute on the chute rod 5, and change the angle between the chute rod 5 and the adjustment rod 19 , so that the inclination angle of the scale panel 7 can be changed, that is, the inclination angle of the entire drawing panel. In addition, the manual bolt 22 on the front leg 23 is loosened to extend the extension rod 3 outwards and press it to fix. The inclination angle of the scale desktop 7 can be changed. The left edge and the lower edge of scale panel 7 are all marked with scale, which can be convenient for students to draw mechanically; described slide bar 28 slides in chute block 27, and control bar 25 is connected with one end of slide bar 28 by bolt, and can Rotating around the slide bar 28 , the control bar 25 can coincide with the two slots of the slot block 26 respectively to fix the vertical or coplanar relative positions of the side plate 18 and the bottom plate 20 . The folded seat is fixed in the fixed block one 6 and the fixed block two 13 of the table body after the folding by the fixed rod one 36 and the fixed rod two 37, and a pair of parallel surfaces on the fixed rod two 37 can reinforce the folded seat The connection between the chair and the table body. After the folded table body and the seat are fixedly connected, a portable suitcase structure can be formed, and people can carry the foldable multipurpose combined drawing table and chair by carrying the handle bar 15 . The bayonet one 21 is used to coincide with the opening on the chute bar 5 and the front leg 23, and is used to fix and change the angle between the chute bar 5 and the front leg 23. Between the two adjustment rods 19 and the two rear legs 1, and between the two front legs 23 of the two chute rods 5, the largest restraint angles are formed by respective semi-convex circular truncated structures. The bayonet 2 10 can be adjusted to coincide with the holes of the connection block 2 11 and the connection block 3 14, so that the bottom plate 20 and the scale panel 7 can maintain a parallel or coplanar positional relationship. The control rod 25 can rotate around one end of the slide rod 28, and the use of its keyway structure can make the side plate 18 and the bottom plate 20 coplanar and fixed, and the control rod 25 can slide along the direction of the chute to make the rotation on the slide rod 28 The point and the chute on the control rod 25 are relatively dislocated, so as to avoid being affected by gravity to make the control rod 25 be in a vertical downward state, which will affect the coplanar stability of the side plate 18 and the bottom plate 20.

Shown in accompanying drawing 1, 2 is described folding multi-purpose combination drawing desk and chair, comprises desk and seat. First push the bayonet 2 10 on the two handle end covers 12 to both sides at the same time, then push the bottom plate 20 and the side plates 18 on both sides to the outside, and then start to unfold each support rod on the table body; Open the manual bolt 22, push the front leg 23 and the rear leg 1 outward, and slide the manual bolt 22 on the chute rod 5 to the position of the positioning groove 52 of the chute rod 5 along the chute, press and fix With the manual bolt 22, push the bayonet 2 10 on the two handle end covers 12 to both sides at the same time, and then dial the bottom plate 20 and the side plates 18 on both sides inward, so that the bayonet 2 10 and the connecting block 3 14 The positioning holes 141 on the top match and loosen the bayonet 2 10 so that the relative positions of the connecting block 2 11 and the connecting block 3 14 are fixed. The card slot of the card slot block 24 makes the side plate 18 perpendicular to the bottom plate 20 . For the seat, the restraining rod 38 is moved downwards, so that the second connecting rod 35 and the third connecting rod 40 are all disengaged from the bayonet on the restraining rod, and at this moment, each support pin (39) is pushed outwards.

As shown in accompanying drawing 3, it is a schematic diagram when the main body of the folding multipurpose combined drawing table and chair according to the present invention is used as a mechanical drawing table; distance, and press and fix, the inclination angle of the scale desktop 7 will change with the size of the distance at this time, in addition, loosen the manual bolt 22 on the front leg 23 to extend the extension rod 3 outwards, this time also The inclination angle of the scale desktop 7 can be changed.

As shown in accompanying drawing 4, it is a schematic diagram when the main body of the foldable multi-purpose combined drawing table and chair according to the present invention is used as an outdoor drawing board table; Pull the two sides apart, and then push the bottom plate 20 and the side plates 18 on both sides to the outside, so that the bayonet 2 10 coincides with the positioning hole 142 on the connection block 3 14 and loosen the bayonet 2 10 so that the connection block 2 11 The relative position of connecting block 3 14 is fixed. At this time, the scale desktop 7 is coplanar with the base plate 20, and the side plates 18 are expanded to both sides, and the position of the draw-in slot of the control rod 25 on the draw-in slot block 26 is changed, so that the side plate 18 and the base plate 20 coplanar stability.

As shown in accompanying drawing 5, it is a schematic diagram when the main body of the folding multi-purpose combined drawing table and chair of the present invention is used as an art drawing table; when adjusting, the manual bolt 22 on the chute bar 5 needs to be loosened and slide upward To the position of the positioning groove 54 of the chute rod 5, press and fix it, loosen the manual bolt 22 on the rear leg 1 and the front leg 23, insert the bayonet pin 1 21 into the opening 53 of the chute rod 5, and Embedded with the opening 231 or 232 of the front leg 23, the inclination angle of the scale desktop 7 can be changed. In addition, the manual bolt 22 on the front leg 23 is loosened to extend the extension rod 3 outward, and the scale can also be changed at this time. The inclination angle of the desktop 7.

As shown in accompanying drawing 6, it is a schematic diagram when the main body of the foldable multipurpose combined drawing desk and chair according to the present invention is used as a convenient square table; The manual bolt 22 on the chute bar 5 needs to be pressed and fixed at the positioning groove 54 position of the chute bar 5, and the control side plate 18, the scale panel 7, and the base plate 20 are adjusted to be coplanar.

As shown in accompanying drawing 7, it is the schematic diagram when the main body in the foldable multi-purpose combined drawing table and chair of the present invention is used as a portable suitcase; Loosen the bolt 22, slide up to the position of the positioning groove 54 of the chute rod 5, and press and fix it, dial in the front leg 23 and the rear leg 1, and press and fix it with the manual bolt 22, and then place the coplanar The bottom plate 20 and the side plate 18 of the bottom plate are closed, and the position is parallel to the scale table top 7, and the bayonet two 10 coincides with the positioning hole 141 of the connection block three 14. Put the four supporting feet 39 of the seat away, and respectively insert them into the fixed block 1 6 and the fixed block 2 13 of the scale table 7, and move the restraining rod 38 upward, so that the connecting rod 2 35 and the connecting rod 3 40 are embedded in the restraining rod 38 in the bayonet, fixing the assembly of the seat.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The foldable multi-purpose combined drawing table and chair of the present invention has a reasonable design structure and novel design ideas. Various structural forms can be transformed through various folding combinations, which are respectively: desk and chair structure, mechanical drawing table and chair structure, art Drawing table and chair structure, convenient square table structure, portable suitcase structure, etc., are easy to carry and meet people's various needs, especially for schools, this folding multi-purpose combined drawing table and chair is suitable for indoor and outdoor teaching and outdoor drawing. , the foldable multi-purpose combined drawing table and chair is also suitable for a convenient square table during field trips.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (10)

1. folding type multi-purpose combination drawing tables and chairs, comprise main body and seat, described main body, comprise scale desktop (7), sliding chute rod (5), adjusting rod (19), front leg strut (23), rear support leg (1), handlebar (15), base plate (20), side plate (18), bearing pin one (16), connecting rod one (4), contiguous block one (17), contiguous block two (11), contiguous block three (14), manual bolts (22), bayonet lock one (21), extension rod (3), semicircle end cap (2), handle end cap (12), spring end cap (8), spring (9), bayonet lock two (10), hinge (24), draw-in groove block (26), control lever (25), slide bar (28), runner block (27), fixed block one (6), fixed block two (13), described seat, comprise feet (39), two constraining rods (38), two support bars (30), contiguous block four (34), contiguous block five (33), contiguous block six (29), connecting rod two (35), connecting rod three (40), fixed bar one (36), fixed bar two (37), seat panel (32) and bolts, described sliding chute rod (5) is connected with scale desktop (7) by contiguous block one (17) and bearing pin one (16) respectively with adjusting rod (19), contiguous block one (17) is bolted on scale panel (7), sliding chute rod (5) and adjusting rod (19) again manually bolt (22) be fixed mutually, described front leg strut (23) is connected with sliding chute rod (5), and manually bolt (22) and the connecting rod one (4) be assemblied between two front leg struts (23) are fixed, bayonet lock one (21) is equipped with between manual bolts (22) and sliding chute rod (5), be used for changing the corner dimension between sliding chute rod (5) and front leg strut (23), in the inner side slot of front leg strut (23), an extension rod (3) is installed, by the chute on front leg strut (23) and use manual bolts (22) control extension rod (3) extended length, the described compression of rear support leg (1) manually between bolt (22) and semicircle end cap (2) retrains the connection fixing adjusting rod (19) and rear support leg (1), described base plate (20) is connected with scale panel (7) with contiguous block three (14) by contiguous block two (11), and contiguous block two (11) and contiguous block three (14) are all separately fixed on scale desktop (7) and base plate (20) by bolt, described handlebar (15) two ends are all equipped with handle end cap (12), be fixed on contiguous block two (11) and contiguous block three (14) by handle end cap (12), and two kinds of contiguous blocks two (11) and contiguous block three (14) are assembled together, the handle end cap (12) of both sides is equipped with bayonet lock two (10), the relative position between contiguous block two (11) and contiguous block three (14) is changed by the hole on contiguous block two (11) and contiguous block three (14), spring (9) is had at the upper cover of handle end cap (12), and be equipped with spring end cap (8) at the other end of handle end cap (12), be used for the position of restricted spring (9), play the effect compressing bayonet lock two (10), described side plate (18) is connected with base plate (20) by hinge (24), and controls the relative position with base plate (20) by the assembly be made up of draw-in groove block (26), control lever (25), slide bar (28), runner block (27), what described scale panel (7) was bolted also has two fixed blocks one (6) and two fixed blocks two (13), is used for fixing the seat after folding, described feet (39) is connected with connecting rod three (40), fixed bar two (37) by connecting rod two (35), fixed bar one (36) respectively, and be connected with seat panel (32) with contiguous block six (29) and bearing pin one (16) respectively by contiguous block five (33), contiguous block five (33) and contiguous block six (29) are bolted in seat panel (32), described constraining rod (38) one end is connected with seat panel (32) by contiguous block four (34) and bearing pin two (31), the other end is associated with connecting rod two (35) and connecting rod three (40), be used for controlling opening and folding of feet (39), contiguous block four (34) is bolted in seat panel (32), described support bar (30) is bolted in seat panel (32), is used for supporting chair panel (32), described fixed bar one (36) is connected two feets (39) with fixed bar two (37), and in the fixed block one (6) be fixed on after seat is folding on scale panel (7) and fixed block two (13).

2. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: the connection being fixed sliding chute rod (5) and adjusting rod (19) by described manual bolts (22), the position of manual bolts (22) is moved by the chute on sliding chute rod (5), change the corner dimension of sliding chute rod (5) and adjusting rod (19), thus the angle of inclination size of scale panel (7) can be changed, the i.e. angle of inclination size of whole drawing panel, in addition, extension rod (3) stretches out and is fixed by the manual bolts (22) unclamped on front leg strut (23), now also can change the angle of inclination of scale desktop (7).

3. folding type multi-purpose combination drawing tables and chairs according to claim 1, is characterized in that: left hand edge and the lower limb of scale panel (7) all indicate scale, can be convenient to student's mechanical drawing.

4. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: described slide bar (28) slides in runner block (27), control lever (25) is connected by bolt with one end of slide bar (28), and can rotate around slide bar (28), control lever (25) can match with two draw-in grooves of draw-in groove block (26) respectively, is used for fixing the relative position that side plate (18) is vertical or coplanar with base plate (20) respectively.

5. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: the seat after folding by the fixed block one (6) of fixed bar one (36) and the fixing table body after folding of fixed bar two (37) and fixed block two (13), pair of parallel on fixed bar two (37) connectivity can reinforcing the seat after folding and table body.

6. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: after the table body after folding is fixedly connected with seat, can form Portable luggage structure, people carry handlebar (15) by hand and carry this folding type multi-purpose combination drawing tables and chairs.

7. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: described bayonet lock one (21) is used to match with the opening on sliding chute rod (5) and front leg strut (23), is used for fixing and changes the corner dimension between sliding chute rod (5) and front leg strut (23).

8. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: between two described adjusting rods (19) and two rear support legs (1), between two sliding chute rods (5) two front leg struts (23), all form maximum constrain angle by respective semi-convex frustum cone structure.

9. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: described bayonet lock two (10), by regulating match consistent with the hole of contiguous block two (11) and contiguous block three (14), can make base plate (20) and scale panel (7) keeping parallelism or coplanar position relationship.

10. folding type multi-purpose combination drawing tables and chairs according to claim 1, it is characterized in that: described control lever (25) can rotate around one end of slide bar (28), the use of its keyway arrangements can make side plate (18) and base plate (20) coplanar fixing time, control lever (25) is slided along chute direction, make the point of rotation on slide bar (28) and the chute generation relative dislocation on control lever (25), avoid being affected by gravity and make control lever (25) in state straight down, affect the coplanar stability of side plate (18) and base plate (20).