Drawing device capable of assisting hand drawing

Abstract

The invention relates to the technical field of hand drawing boards, in particular to a drawing device capable of assisting hand drawing, which comprises a body, a fixing device is arranged on the bottom side in the body, the fixing device can slide up and down, universal wheels are fixedly connected to the bottom of the body, a driving device is arranged in the body, and the driving device is fixedly connected to the bottom of the body. The device comprises a driving device, the driving device is in driving connection with a seat telescopic device and a lifting device, an angle adjusting device is arranged at the top of the lifting device, and a hand drawing plate is fixedly connected to the upper portion of the angle adjusting device. The lifting device and the angle adjusting device are driven by the driving device at the same time, the height of the hand drawing board is adjusted by rotating the driving device clockwise, the angle of the hand drawing board can be adjusted by continuously rotating the driving device clockwise, resetting can be completed by rotating the driving device anticlockwise, the steps are simple, and operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of hand-drawing boards, and more particularly to a drawing device capable of assisting hand-drawing. Background Art

[0002] Environmental art design mainly studies the basic theoretical knowledge of environmental art design, such as basic design knowledge, display art design knowledge, and architectural drawing and reading knowledge. It has knowledge and abilities in environmental design, interior decoration design, rendering techniques, outdoor environment design, quotation and construction management. Drawing boards are often used in the study of environmental art design.

[0003] In the patent application number CN202121907365.4, a drawing device that can assist hand-drawing is disclosed, including a storage component and an adjustment component. The storage component includes a shell, a control panel, a fixing slot, a vent, an installation slot, a door panel, a drawer and a slide rail. The adjustment component includes a first electric push rod, an operating table, a hand-drawing board body, a first rotating shaft, a first slide, a slider, a second electric push rod, a second rotating shaft, a connecting rod, a second slide, a supporting slide, a third rotating shaft and a support rod. The utility model can install an electric push rod and an operating table on the top of the shell, and drive the operating table and the hand-drawing board to move vertically through the electric push rod at the bottom of the operating table. The slider is pulled by the electric push rod inside the slide. A connecting rod is provided between the slider and the hand-drawing board. The horizontal movement of the slider drives the connecting rod to push the hand-drawing board to flip, thereby realizing multi-angle adjustment and facilitating painting work.

[0004] The above technical solution has the following defects: when using the device, it is necessary to first adjust the lifting of the drawing board through an electric push rod, and then use a second electric push rod to drive the movement of the slider to adjust the angle of the drawing board. Different power devices need to cooperate with each other to complete the adjustment. The steps are cumbersome and troublesome. For students studying environmental art design, they often need to go to the field to sketch. The device is not easy to move and cannot meet the needs of field sketching. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a drawing device that can assist hand-drawing, so as to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a drawing device that can assist hand-drawing, comprising a main body, a fixing device provided on the bottom side of the main body, the fixing device being able to slide up and down, a universal wheel being fixedly connected to the bottom of the main body, a driving device provided inside the main body, the driving device being driven and connected to a seat telescopic device and a lifting device, an angle adjustment device provided on the top of the lifting device, a hand-drawing board being fixedly connected above the angle adjustment device, the hand-drawing board being slidably connected to the inner wall of the main body, a closing component provided above the main body, and a stretching component being fixedly connected to the left side of the main body.

[0007] Furthermore, the fixing device includes a movable plate and a foot plate, a third slide groove is provided on the side of the movable plate away from the stretching component, the foot plate is fixedly connected to the connecting rod, the connecting rod is fixedly connected to the first slider, the first slider slides inside the third slide groove, an L-shaped slide groove is provided on the main body, the connecting rod can slide in the L-shaped slide groove, an annular fixing rod is provided at the bottom of the movable plate, an annular through groove is provided at the bottom of the main body, the annular fixing rod can slide up and down in the annular through groove, and the annular fixing rod can wrap the universal wheel inside.

[0008] Furthermore, the driving device includes an adjusting knob, which is fixedly connected to a rotating shaft. The rotating shaft passes through the body and enters the interior. A first gear and two second gears are sleeved on the rotating shaft, and the first gear is located between the two second gears.

[0009] Furthermore, the seat telescopic device includes a first telescopic rod, which is composed of a first fixed end and a first movable end. The first fixed end is fixedly connected to the inner wall of the main body on the side close to the stretching component, and the first movable end is fixedly connected to the telescopic seat on the side away from the first fixed end. A first rack is provided at the bottom of the first movable end, and the first rack is meshingly connected to the first gear. A one-way door is provided on the main body, and the opening direction of the one-way door is from the inside of the main body to the outside.

[0010] Furthermore, the lifting device includes two second telescopic rods, the second telescopic rods are composed of a second fixed end and a second movable end, the second fixed end is fixedly connected to the bottom of the body, and the second movable end is provided with a second rack, and the second rack is meshingly connected with the second gear.

[0011] Furthermore, the angle adjustment device includes a first connecting block and a second connecting block, the first connecting block is fixedly connected to the second movable end, a third telescopic rod is provided on the top of the first connecting block, a universal ball is fixedly connected above the third telescopic rod, a telescopic spring is provided on the outer surface of the third telescopic rod, and the telescopic spring is also fixedly connected to the universal ball, a spherical groove is provided at the bottom of the second connecting block, and the universal ball can rotate inside the spherical groove.

[0012] Furthermore, a first connecting shaft and a second connecting shaft are provided on the hand-drawing board, the first connecting shaft is close to the side of the stretching component, and the second connecting shaft is away from the side of the stretching component, the first connecting shaft is fixedly connected to the first pulley, and the second connecting shaft is fixedly connected to the second pulley, and a first slide groove and a second slide groove are provided on the inner wall of the main body, the vertical length of the first slide groove is greater than that of the second slide groove, the first pulley slides inside the first slide groove, and the second pulley slides inside the second slide groove.

[0013] Furthermore, the closing assembly includes a telescopic door, and a second handle is fixedly connected to the telescopic door.

[0014] Furthermore, a storage box is slidably provided on a side of the main body away from the stretching assembly, and a first handle is installed on the storage box.

[0015] Furthermore, the stretching assembly includes a mounting plate, which is fixedly connected to the body, a latch fixedly connected to the mounting plate, a fourth telescopic rod provided inside the latch, and a third handle fixedly connected to the top of the fourth telescopic rod.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention is provided with a driving device, a lifting device and an angle adjustment device, which is conducive to the driving device driving the lifting device and the angle adjustment device at the same time. The height of the hand-drawing board is first adjusted by rotating the driving device clockwise, and the angle of the hand-drawing board can be adjusted by continuing to rotate the driving device clockwise. The driving device can be reset by rotating it counterclockwise. The steps are simple and the operation is convenient.

[0018] 2. The present invention is provided with universal wheels and a fixing device, which facilitates the movement of the device and is convenient for sketching outdoors. The fixing device can fix the device to prevent movement and affect the drawing effect.

[0019] 3. The present invention is provided with a seat telescopic device, which is conducive to hand-painting while sitting when sketching outdoors, saving physical energy. The seat telescopic device can also be adjusted by a driving device without the need for an additional adjusting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 Schematic diagram of the bottom structure of the present invention;

[0023] Figure 4It is a schematic structural diagram of the fixing device of the present invention;

[0024] Figure 5 Schematic diagram of the structure of each regulating device of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the driving device and seat telescopic device of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the driving device and lifting device of the present invention;

[0027] Figure 8 Schematic diagram of the angle adjustment device of the present invention;

[0028] Figure 9 It is a schematic structural diagram of the stretching assembly of the present invention.

[0029] The accompanying drawings are marked as follows: 1. body; 101. annular groove; 102. universal wheel; 103. storage box; 104. first handle; 105. first slide; 106. second slide; 107. L-shaped slide; 2. fixing device; 201. movable plate; 202. third slide; 203. first slider; 204. connecting rod; 205. foot plate; 206. annular fixing rod; 3. driving device; 301. adjusting knob; 302. rotating shaft; 303. first gear; 304. second gear; 4. seat telescopic device; 401. first telescopic rod; 4011. first fixed end; 4012. first movable end; 402. first rack; 403. telescopic seat ;404, one-way door; 5, lifting device; 501, second telescopic rod; 5011, second fixed end; 5012, second movable end; 502, second rack; 6, angle adjustment device; 601, first connecting block; 602, third telescopic rod; 603, universal ball; 604, telescopic spring; 605, second connecting block; 606, spherical slide; 7, hand-drawing board; 701, first connecting shaft; 702, first pulley; 703, second connecting shaft; 704, second pulley; 8, closing assembly; 801, telescopic door; 802, second handle; 9, stretching assembly; 901, mounting plate; 902, latch; 903, fourth telescopic rod; 904, third handle. DETAILED DESCRIPTION

[0030] The technical solutions of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. In addition, the various structural forms described in the following embodiments are merely illustrative. The drawing device capable of assisting hand-drawing involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making any creative efforts fall within the scope of protection of the present invention.

[0031] Reference Figure 1 and Figure 2 The present invention provides a drawing device that can assist hand-drawing, including a main body 1, a fixing device 2 is provided on the bottom side of the main body 1, the fixing device 2 can slide up and down, a universal wheel 102 is fixedly connected to the bottom of the main body 1, a driving device 3 is provided inside the main body 1, the driving device 3 is driven by a seat telescopic device 4 and a lifting device 5, an angle adjustment device 6 is provided on the top of the lifting device 5, a hand-drawing board 7 is fixedly connected above the angle adjustment device 6, the hand-drawing board 7 is slidably connected to the inner wall of the main body 1, a closing component 8 is provided above the main body 1, and a stretching component 9 is fixedly connected to the left side of the main body 1.

[0032] In this embodiment, it should be specifically explained that the left side and the right side referred to in this embodiment are based on the attached Figure 2 In the viewing direction, the various adjustments can be completed by rotating the driving device 3 clockwise. After the adjustment, the various devices can be retracted into the body 1 by rotating the driving device 3 counterclockwise. The universal wheel 102 at the bottom is easy to move.

[0033] The main difference between this embodiment and the prior art is that this embodiment adopts a driving device 3 and a universal wheel 102. By rotating the driving device 3, the seat telescopic device 4 and the lifting device 5 are driven to move at the same time. The telescopic seat 403 comes out from the interior of the body 1 and the hand-drawing board 7 rises and comes out from the interior of the body 1. When the hand-drawing board 7 comes out, the angle adjustment device 6 starts to work as the hand-drawing board 7 rises, and the angle of the hand-drawing board 7 is adjusted. Various adjustments can be completed by simply rotating the driving device 3. It is simple and convenient. The universal wheel 102 at the bottom is easy to move. Specifically, the universal wheel 102, the adjustment knob 301, the first gear 303, the second gear 304, the first rack 402, the second rack 502 and the universal ball 603;

[0034] The above structure is the main structure of this embodiment, which solves the problem that when the device is in use, it is necessary to first adjust the lifting of the hand-drawing board 7 through the electric push rod, and then use the second electric push rod to drive the movement of the slider to adjust the angle of the hand-drawing board 7. Different power devices need to cooperate with each other to complete the adjustment. The steps are cumbersome and troublesome. For students studying environmental art design, they often need to go to the field to sketch. The device is not easy to move and cannot meet the needs of field sketching. The universal wheel 102 is an existing structure. The specific structure and connection method of the universal wheel 102 are not described in detail in this embodiment.

[0035] Reference Figure 1-4The fixing device 2 includes a movable plate 201 and a foot plate 205. A third slide groove 202 is provided on the side of the movable plate 201 away from the stretching component 9. The foot plate 205 is fixedly connected to the connecting rod 204. The connecting rod 204 is fixedly connected to the first slider 203. An L-shaped slide groove 107 is provided on the main body 1. The connecting rod 204 can slide in the L-shaped slide groove 107. An annular fixing rod 206 is provided at the bottom of the movable plate 201, and an annular through groove 101 is provided at the bottom of the main body 1.

[0036] In this embodiment, it should be specifically explained that: the first slider 203 can slide inside the third sliding groove 202, the annular fixing rod 206 can slide up and down in the annular through groove 101, and the annular fixing rod 206 wraps the universal wheel 102 inside.

[0037] Reference Figure 5-6 The driving device 3 includes an adjusting knob 301, which is fixedly connected to a rotating shaft 302. The rotating shaft 302 passes through the main body 1 and enters the interior. A first gear 303 and two second gears 304 are sleeved on the rotating shaft 302. The first gear 303 is located between the two second gears 304.

[0038] In this embodiment, it should be specifically explained that the first gear 303 and the second gear 304 on the rotating shaft 302 are driven to rotate by rotating the adjusting knob 301 .

[0039] Reference Figure 6 The seat telescopic device 4 includes a first telescopic rod 401, which is composed of a first fixed end 4011 and a first movable end 4012. The first fixed end 4011 is fixedly connected to the inner wall of the main body 1 near the stretching component 9, and the first movable end 4012 is fixedly connected to the telescopic seat 403 on the side away from the first fixed end 4011. A first rack 402 is provided at the bottom of the first movable end 4012, and the first rack 402 is meshingly connected to the first gear 303. A one-way door 404 is provided on the main body 1, and the opening direction of the one-way door 404 is from the inside of the main body 1 to the outside.

[0040] In this embodiment, it should be specifically explained that: as the first movable end 4012 of the telescopic seat 403 moves to the outside of the main body 1 through the one-way door 404, the bottom of the telescopic seat 403 can be extended to the ground to ensure the stability of the device.

[0041] Reference Figure 7 The lifting device 5 includes two second telescopic rods 501, the second telescopic rod 501 is composed of a second fixed end 5011 and a second movable end 5012, the second fixed end 5011 is fixedly connected to the bottom of the body 1, and the second movable end 5012 is provided with a second rack 502, and the second rack 502 is meshingly connected with the second gear 304.

[0042] In this embodiment, it should be specifically explained that the rotation of the second gear 304 drives the second movable end 5012 to move up and down, thereby achieving the lifting of the hand-drawing board 7 .

[0043] Reference Figure 8 The angle adjustment device 6 includes a first connecting block 601 and a second connecting block 605. The first connecting block 601 is fixedly connected to the second movable end 5012. A third telescopic rod 602 is provided on the top of the first connecting block 601. A universal ball 603 is fixedly connected to the top of the third telescopic rod 602. A telescopic spring 604 is provided on the outer surface of the third telescopic rod 602. The telescopic spring 604 is also fixedly connected to the universal ball 603. A spherical groove 606 is provided at the bottom of the second connecting block 605, and the universal ball 603 can rotate inside the spherical groove 606.

[0044] In this embodiment, it should be specifically explained that: through the cooperation of the third telescopic rod 602 and the telescopic spring 604 and the rotation of the universal ball 603 inside the spherical slide 606, the second connecting block 605 can be changed from a horizontal state to an inclined state, thereby adjusting the angle of the upper hand-drawing board 7.

[0045] Reference Figure 5 A first connecting shaft 701 and a second connecting shaft 703 are provided on the hand-drawing board 7. The first connecting shaft 701 is close to the side of the stretching component 9, and the second connecting shaft 703 is away from the side of the stretching component 9. The first connecting shaft 701 is fixedly connected to the first pulley 702, and the second connecting shaft 703 is fixedly connected to the second pulley 704. A first sliding groove 105 and a second sliding groove 106 are provided on the inner wall of the main body 1. The vertical length of the first sliding groove 105 is greater than that of the second sliding groove 106. The first pulley 702 slides inside the first sliding groove 105, and the second pulley 704 slides inside the second sliding groove 106.

[0046] In this embodiment, it should be specifically explained that: as the hand-drawing board 7 rises, when the second pulley 704 slides to the top inside the second slide groove 106, it can no longer move upward, while the first pulley 702 can continue to slide upward inside the first slide groove 105, so that the third telescopic rod 602 and the telescopic spring 604 on different sides of the lower angle adjustment device 6 have different extension heights, and the second connecting block 605 changes from a horizontal state to an inclined state, so that the angle of the upper hand-drawing board 7 can be adjusted.

[0047] Reference Figure 2 The closing assembly 8 includes a telescopic door 801 , to which a second handle 802 is fixedly connected.

[0048] In this embodiment, it should be specifically explained that: by pulling the second handle 802, the telescopic door 801 is opened or closed, so that the hand-painted board 7 inside can be extended.

[0049] Reference Figure 1 A storage box 103 is slidably provided on one side of the body 1 away from the stretching assembly 9 , and a first handle 104 is installed on the storage box 103 .

[0050] In this embodiment, it should be specifically explained that some drawing tools can be placed in the storage box 103 for easy storage.

[0051] Reference Figure 9 The stretching assembly 9 includes a mounting plate 901, which is fixedly connected to the body 1. A latch 902 is fixedly connected to the mounting plate 901. A fourth telescopic rod 903 is provided inside the latch 902. A third handle 904 is fixedly connected to the top of the fourth telescopic rod 903.

[0052] In this embodiment, it should be specifically explained that when you need to go out for sketching, you pull the third handle 904 to drive the fourth telescopic rod 903 to extend. Since the mounting plate 901 is fixedly connected to the body 1, you can pull the body 1 to move, making travel convenient.

[0053] Working principle of the present invention:

[0054] The main problem solved by this embodiment is that when the device is in use, it is necessary to first adjust the lifting of the hand-drawing board 7 through an electric push rod, and then use a second electric push rod to drive the movement of the slider to adjust the angle of the hand-drawing board 7. Different power devices need to cooperate with each other to complete the adjustment. The steps are cumbersome and troublesome. For students studying environmental art design, they often need to go to the field to sketch. The device is not easy to move and cannot meet the needs of field sketching.

[0055] The specific steps are as follows:

[0056] When going out for sketching, pull the third handle 904, and the fourth telescopic rod 903 will extend accordingly, making it easier to pull. Since the mounting plate 901 is fixedly connected to the main body 1, the main body 1 can be pulled to move, making it convenient to go out. After arriving at the destination, press the third handle 904 to move downward, and the fourth telescopic rod 903 will retract into the latch 902. The stretching assembly 9 is completely hidden behind the main body 1 and will not block the sight of sketching. First, pull the second handle 802 to drive the telescopic door 801 to extend to one side first, open the top of the main body 1, and facilitate the hand-drawing board 7 to rise from the inside. Then turn the adjusting knob 301 clockwise, and the adjusting knob 301 will drive the internal shaft 302 to rotate accordingly. The first gear 303 and the second gear 304 sleeved on the shaft 302 also rotate together. The first gear 303 is meshedly connected to the first rack 402 at the bottom of the first movable end 4012 in the seat telescopic device 4, thereby driving the first movable end 4012 to extend. The telescopic seat 403 on the side of the first movable end 4012 can enter the outside through the one-way door 404 on the body 1. The bottom of the telescopic seat 403 is telescopic. The bottom of the telescopic seat 403 is extended and in contact with the ground, making it convenient to sit down and start sketching. The second gear 304 is meshedly connected to the second rack 502 on the side of the second movable end 5012 in the lifting device 5, thereby driving the second movable end 5012 to extend. The angle adjustment device 6 and the hand-drawing board 7 above the second movable end 5012 begin to rise, and the height of the hand-drawing board 7 is adjusted. When the hand-drawing board 7 rises, the first pulley 702 and the second pulley 704 slide upward inside the first slide groove 105 and the second slide groove 106 respectively. At the beginning, the angle adjustment device 6 and the hand-drawing board 7 begin to rise horizontally as the lifting device 5 rises. Since the length of the second slide groove 106 is smaller than the first slide groove 105, when the second pulley 704 slides to the top of the second slide groove 106, it encounters resistance and no longer moves upward, while the first pulley 702 can continue to move upward, resulting in the angle adjustment device 6 being closer to the first slide groove 105. As the first pulley 702 moves, the third telescopic rod 602 and the telescopic spring 604 begin to be stretched, and the universal ball 603 begins to rotate inside the spherical slide 606 to buffer the tension, so that the second connecting block 605 fixedly connected to the third telescopic rod 602 and the telescopic spring 604 above begins to tilt to one side. The side of the second connecting block 605 close to the first slide 105 is higher, and as the first pulley 702 continues to slide upward in the first slide 105, the tilt angle of the second connecting block 605 increases. Since the hand-drawing board 7 is fixedly connected to the top of the second connecting block 605, the hand-drawing board 7 tilts accordingly, thereby realizing the adjustment of the angle of the hand-drawing board 7.

[0057] Secondly, it also solves the problem of fixing the device when sketching outside;

[0058] When the device needs to be fixed at the destination, the user steps on the foot plate 205 with his foot, driving the movable plate 201 to move downward along the vertical lowering of the L-shaped slide 107. When it moves to the bottom, the annular fixing rod 206 at the bottom of the movable plate 201 passes through the annular groove 101 at the bottom of the main body 1 and extends out of the main body 1, wrapping the universal wheel 102 inside, and the annular fixing rod 206 contacts the ground, and the universal wheel 102 is in a suspended state. Then continue to step on the foot plate 205 with your foot and move it horizontally along the L-shaped slide 107 to the end, the connecting rod 204 and the first slider 203 move inside the L-shaped slide 107 and the third slide 202 respectively, and then release the foot. At this time, the movable plate 201 and the foot plate 205 are limited by the L-shaped slide 107 as a whole and cannot move up and down, thereby completing the fixation of the device.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drawing device capable of assisting hand-drawing, comprising a main body (1), characterized in that: A fixing device (2) is provided on the bottom side of the body (1), and the fixing device (2) can slide up and down. A universal wheel (102) is fixedly connected to the bottom of the body (1). A driving device (3) is provided inside the body (1), and the driving device (3) is connected to the seat telescopic device (4) and the lifting device (5). An angle adjustment device (6) is provided on the top of the lifting device (5). A hand-painted board (7) is fixedly connected above the angle adjustment device (6). The hand-painted board (7) is slidably connected to the inner wall of the body (1). A closing component (8) is provided above the body (1), and a stretching component (9) is fixedly connected to the left side of the body (1).

2. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The fixing device (2) comprises a movable plate (201) and a pedal plate (205), a third slide groove (202) is provided on a side of the movable plate (201) away from the stretching assembly (9), the pedal plate (205) is fixedly connected to a connecting rod (204), the connecting rod (204) is fixedly connected to a first slider (203), the first slider (203) slides inside the third slide groove (202), an L-shaped slide groove (107) is provided on the body (1), the connecting rod (204) can slide in the L-shaped slide groove (107), an annular fixing rod (206) is provided at the bottom of the movable plate (201), an annular through groove (101) is provided at the bottom of the body (1), the annular fixing rod (206) can slide up and down in the annular through groove (101), and the annular fixing rod (206) can wrap the universal wheel (102) inside.

3. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The driving device (3) comprises an adjusting knob (301), the adjusting knob (301) being fixedly connected to a rotating shaft (302), the rotating shaft (302) passing through the body (1) and entering the interior, a first gear (303) and two second gears (304) being sleeved on the rotating shaft (302), and the first gear (303) being located between the two second gears (304).

4. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The seat telescopic device (4) includes a first telescopic rod (401), the first telescopic rod (401) consisting of a first fixed end (4011) and a first movable end (4012), the first fixed end (4011) being fixedly connected to the inner wall of the body (1) on the side close to the stretching assembly (9), the first movable end (4012) being fixedly connected to the telescopic seat (403) on the side away from the first fixed end (4011), a first rack (402) being provided at the bottom of the first movable end (4012), the first rack (402) being meshingly connected to the first gear (303), a one-way door (404) being provided on the body (1), the one-way door (404) opening direction being from the inside of the body (1) to the outside.

5. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The lifting device (5) comprises two second telescopic rods (501), wherein the second telescopic rods (501) are composed of a second fixed end (5011) and a second movable end (5012), wherein the second fixed end (5011) is fixedly connected to the bottom of the body (1), and a second rack (502) is provided on the second movable end (5012), and the second rack (502) is meshingly connected to the second gear (304).

6. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The angle adjustment device (6) comprises a first connecting block (601) and a second connecting block (605), wherein the first connecting block (601) is fixedly connected to the second movable end (5012), a third telescopic rod (602) is provided on the top of the first connecting block (601), a universal ball (603) is fixedly connected above the third telescopic rod (602), a telescopic spring (604) is sleeved on the outer surface of the third telescopic rod (602), and the telescopic spring (604) is also fixedly connected to the universal ball (603), a spherical groove (606) is provided on the bottom of the second connecting block (605), and the universal ball (603) can rotate inside the spherical groove (606).

7. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The hand-drawing board (7) is provided with a first connecting shaft (701) and a second connecting shaft (703), wherein the first connecting shaft (701) is close to the side of the stretching assembly (9), and the second connecting shaft (703) is away from the side of the stretching assembly (9), the first connecting shaft (701) is fixedly connected to the first pulley (702), and the second connecting shaft (703) is fixedly connected to the second pulley (704), and the inner wall of the body (1) is provided with a first sliding groove (105) and a second sliding groove (106), the vertical length of the first sliding groove (105) is greater than that of the second sliding groove (106), the first pulley (702) slides inside the first sliding groove (105), and the second pulley (704) slides inside the second sliding groove (106).

8. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The closing assembly (8) comprises a telescopic door (801), and a second handle (802) is fixedly connected to the telescopic door (801).

9. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: A storage box (103) is slidably provided on a side of the body (1) away from the stretching assembly (9), and a first handle (104) is installed on the storage box (103).

10. The drawing device capable of assisting hand-drawing according to claim 1, characterized in that: The stretching assembly (9) comprises a mounting plate (901), the mounting plate (901) being fixedly connected to the body (1), a latch (902) being fixedly connected to the mounting plate (901), a fourth telescopic rod (903) being provided inside the latch (902), and a third handle (904) being fixedly connected to the top of the fourth telescopic rod (903).

Images