Rotatable art teaching drawing board with fixed drawing paper for hearing-impaired students

Abstract

The invention relates to the technical field of drawing boards, in particular to a rotatable drawing paper fixed art teaching drawing board for hearing-impaired students, which comprises an adjusting module, a drawing module is arranged at the top of the adjusting module, the drawing module comprises a drawing board body, and the drawing board body is fixedly connected with two limiting rails I and two limiting rails II. The drawing board body is provided with a plurality of paper pressing mechanisms, and a supporting mechanism is arranged on the side portion of the drawing board body. According to the drawing board, the camera is arranged at the bottom of the displacement mechanism, drawing paper can be placed on the board body of the drawing board, then the drawing paper is fixed through the paper pressing mechanism, the camera can be located on the top or the side of a teacher, the camera roughly corresponds to the drawing position, the drawing process can be shot through the camera, and then the drawing process is displayed on the display screen; and the art learning of hearing-impaired students is facilitated, more students can learn at one time, and the drawing effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drawing boards, and specifically relates to a rotatable drawing paper fixing art teaching drawing board for hearing-impaired students. Background Art

[0002] During the art drawing process, it is usually necessary to place the drawing paper on the drawing board and draw on the drawing board. In the process of using the existing art teaching drawing board, usually after the teacher draws on the drawing board, it is directly displayed through the drawing board. However, for hearing-impaired students, since they cannot hear the teacher's explanation, directly displaying through the drawing board has relatively poor teaching effects. And if hearing-impaired students directly watch the teacher's drawing process, when the number of students is relatively large, only part of the hearing-impaired students can watch at a time, which is not conducive to the art learning of hearing-impaired students. Summary of the Invention

[0003] The purpose of the present invention is to provide a rotatable drawing paper fixing art teaching drawing board for hearing-impaired students to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A rotatable drawing paper fixing art teaching drawing board for hearing-impaired students includes an adjustment module. A drawing module is arranged on the top of the adjustment module. The drawing module includes a drawing board body. Two limit rails one and two limit rails two are fixedly connected to the drawing board body. The drawing board body is provided with a plurality of paper pressing mechanisms. A support mechanism is arranged on the side of the drawing board body. The support mechanism includes a sliding seat. The sliding seat is slidably connected to the two limit rails two. Two side rods are rotatably connected to both ends of the sliding seat. The top ends of adjacent two side rods are rotatably connected to a positioning rod. An elliptical rod is arranged between the two positioning rods. A displacement mechanism is arranged on the elliptical rod; A camera is arranged at the bottom of the displacement mechanism. A positioning box is fixedly connected to the drawing board body. A connecting motor is arranged inside the positioning box. The output end of the connecting motor is drivingly connected to a connecting lead screw that is screwed to the sliding seat. The adjustment module is provided with a connecting frame. A display screen is arranged inside the connecting frame. The positioning box is arranged on one side of the drawing board body close to the connecting frame. The adjustment module can support the drawing board body and can adjust the angle of the drawing board body. The paper pressing mechanism can press the edge of the drawing paper to fix the drawing paper. The two limit rails one are respectively located on the two long sides of the drawing board body, and the length of the limit rail one is less than the length of the long side of the drawing board body. The two limit rails two are respectively located on the two short sides of the drawing board body; The elliptical rod is embedded with a rack. The displacement mechanism includes a sliding box, a power motor two, a transmission shaft two, and a connecting gear; The sliding box is slidably connected to the elliptical rod. The camera is embedded inside the sliding box. The second power motor is arranged inside the sliding box. The second power motor and the camera are staggered from each other. The second transmission shaft is rotatably connected inside the sliding box. The output end of the second power motor is drivingly connected to one end of the second transmission shaft. The connecting gear is fixedly sleeved on the second transmission shaft. The connecting gear is meshed and driven with the rack.

[0005] Furthermore, the support mechanism further includes a connecting shaft, a first power motor, a first transmission shaft, a second worm, and a second worm gear; The connecting shaft is rotatably connected to the sliding seat. The end of the connecting shaft is fixedly connected to a side rod; The first power motor is arranged inside the sliding seat. Both the connecting shaft and the first power motor are located inside one end of the sliding seat. An L-shaped seat fixedly connected to the first power motor is arranged inside the sliding seat; The first transmission shaft is rotatably connected inside the sliding seat. The output end of the first power motor is drivingly connected to one end of the first transmission shaft; The second worm is fixedly sleeved on the first transmission shaft; The second worm gear is fixedly sleeved on the connecting shaft. The second worm is meshed and driven with the second worm gear.

[0006] Furthermore, a driving box fixedly connected to a positioning rod is arranged at one end of the elliptical rod. A driving motor is arranged inside the driving box. The output end of the driving motor is drivingly connected to one end of the elliptical rod. The other end of the elliptical rod is rotatably connected to another positioning rod.

[0007] Furthermore, the adjustment module includes a bottom frame, two support columns, two connecting seats, and two adjustment frames; The bottom frame is fixedly connected to the connecting frame; Both support columns are fixedly connected to the top of the bottom frame; The two connecting seats are respectively rotatably connected to the two support columns; The two adjustment frames are respectively fixedly connected to the two connecting seats. The drawing board body is fixedly connected to the two adjustment frames.

[0008] Furthermore, the support column is provided with a butting mechanism; The butting mechanism includes a fixed frame, a butting rod, and a positioning screw rod; The fixed frame is fixedly connected to the support column; The butting rod is slidably connected inside the fixed frame. The end of the butting rod contacts the side surface of the adjustment frame; The positioning screw rod is rotatably connected inside the fixed frame. The positioning screw rod is screwed and connected to the inside of the butting rod.

[0009] Preferably, an adjusting motor is arranged inside a support column. The output end of the adjusting motor is in transmission connection with a first rotating shaft rotatably connected to the support column. A first worm is fixedly sleeved on the first rotating shaft. A second rotating shaft rotatably connected to an adjacent connecting seat is arranged inside a support column. A first worm gear meshing with the first worm is fixedly sleeved on the second rotating shaft.

[0010] Preferably, the paper pressing mechanism comprises a pressing rod, two connecting frames, two sliding blocks, two sliding frames, two inserting blocks and two reset springs; The pressing rod is arranged on the plate body of the drawing board; The two connecting frames are both arranged on the plate body of the drawing board, and the two connecting frames are respectively located at the top and the bottom of the plate body of the drawing board; The two sliding blocks are respectively fixedly connected to the two connecting frames, and the two sliding blocks are both slidably connected inside the adjacent first limiting rail; The two sliding frames are respectively slidably connected inside the two connecting frames; The two inserting blocks are respectively rotatably connected to the two sliding frames. The pressing rod is slidably connected inside the two inserting blocks. The bottom end of the pressing rod is slidably connected inside the inserting block located at the bottom. The top end of the pressing rod passes through the inside of the inserting block located at the top; The two reset springs are respectively arranged inside the two connecting frames, and the reset springs are fixedly connected to the inside of the adjacent sliding frames.

[0011] Furthermore, a groove is formed in the pressing rod, and a U-shaped frame is fixedly connected to the plate body of the drawing board.

[0012] Preferably, a linkage rod is rotatably connected to the two connecting frames. The linkage rod is fixedly connected with two semi-circular blocks. A push rod slidably connected to the connecting frame is fixedly connected to the inside of the sliding frame. The two semi-circular blocks are respectively located inside the two connecting frames, and the two semi-circular blocks respectively correspond to the two push rods. An arc surface is arranged on the side of the semi-circular block.

[0013] Preferably, a limiting shaft rotatably connected to the adjacent sliding frame is fixedly connected to the inserting block. A torsion spring is arranged on the side of the limiting shaft, and the torsion spring is located between the side of the limiting shaft and the inside of the sliding frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are: A camera is provided at the bottom of the displacement mechanism. The drawing paper can be placed on the drawing board body, and then the drawing paper is fixed by the paper pressing mechanism. When the teacher is drawing on the drawing paper, the side rod rotates on the sliding seat and moves on the elliptical rod through the displacement mechanism, thereby adjusting the position of the camera so that the camera is located above or beside the teacher and roughly corresponds to the drawing position. In this way, when the teacher is drawing, the drawing process can be photographed by the camera and then displayed on the display screen, which is beneficial for hearing-impaired students to learn art. Moreover, relatively more students can learn at one time. At the same time, when the teacher moves away from the drawing module after drawing a part, the position of the camera can be adjusted so that the camera is facing the drawing. The drawing process is recorded step by step through the camera, which is beneficial to improving the drawing effect.

[0015] A torsion spring is provided on the side of the limiting shaft. When placing the drawing paper on the drawing board body, the linkage rod can be rotated to make the semi-circular block push up the push rod, and then the pressing rod moves away from the drawing board body. At this time, the edge of the drawing paper can be inserted between the drawing board body and the pressing rod. And under the action of the torsion spring, the plug-in block can rotate relative to the sliding frame, and then the edge of the pressing rod abuts against the drawing paper. In this way, the paper pressing mechanism can move along the drawing paper, and the drawing paper is smoothed by the pressing rod to keep the drawing paper neat, which is beneficial for the camera to photograph the drawing paper. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the drawing board in the present invention; Figure 2 is the structural schematic diagram of the adjustment module in the present invention; Figure 3 is the partial structural schematic diagram of the adjustment module in the present invention; Figure 4 is the internal structural schematic diagram of the support column in the present invention; Figure 5 is the structural schematic diagram of the drawing board body in the present invention; Figure 6 is the internal structural schematic diagram of the positioning box in the present invention; Figure 7 is the structural schematic diagram of the paper pressing mechanism in the present invention; Figure 8 is the structural schematic diagram of the pressing rod in the present invention; Figure 9 is the internal structural schematic diagram of the paper pressing mechanism in the present invention; Figure 10 is the structural schematic diagram of the support mechanism in the present invention; Figure 11 is the internal structural schematic diagram of the sliding seat in the present invention; Figure 12 is the internal structural schematic diagram of the displacement mechanism in the present invention.

[0017] In the figure: 100, adjustment module; 110, chassis; 120, support column; 121, adjustment motor; 122, first rotating shaft; 123, first worm; 124, second rotating shaft; 125, first worm gear; 130, connecting seat; 140, adjustment frame; 150, abutting mechanism; 151, fixed frame; 152, abutting rod; 153, positioning lead screw; 200, drawing module; 210, drawing board body; 211, first limiting rail; 212, second limiting rail; 213, U-shaped frame; 220, paper pressing mechanism; 221, pressing rod; 2211, groove; 222, connecting frame; 223, linkage rod; 2231, semi-circular block; 224, sliding frame; 225, plugging block; 2251, limiting shaft; 226, sliding block; 227, torsion spring; 228, return spring; 229, push rod; 230, support mechanism; 231, sliding seat; 232, side rod; 233, positioning rod; 234, connecting shaft; 235, first power motor; 236, first transmission shaft; 237, second worm; 238, second worm gear; 240, elliptical rod; 241, rack; 250, displacement mechanism; 251, sliding box; 253, second power motor; 254, second transmission shaft; 255, connecting gear; 260, positioning box; 261, connecting motor; 262, connecting lead screw; 270, driving box; 280, camera; 300, connecting frame; 310, display screen. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figure 1-7In an embodiment of the present invention, a rotatable drawing board for art teaching for hearing-impaired students with fixed drawing paper includes an adjustment module 100, a drawing module 200 is arranged on the top of the adjustment module 100, the drawing module 200 includes a drawing board body 210, the drawing board body 210 is fixedly connected to two limiting rails 1 211 and two limiting rails 212, the drawing board body 210 is provided with a plurality of paper pressing mechanisms 220, and a supporting mechanism 230 is arranged on the side of the drawing board body 210, the supporting mechanism 230 includes a sliding seat 231, the sliding seat 231 is slidably connected to the two limiting rails 212, and both ends of the sliding seat 231 are rotatably connected to two limiting rails 212. A side rod 232, the top ends of two adjacent side rods 232 are rotatably connected with positioning rods 233, an elliptical rod 240 is arranged between the two positioning rods 233, the elliptical rod 240 is provided with a displacement mechanism 250, one end of the elliptical rod 240 is provided with a driving box 270 fixedly connected with one positioning rod 233, a driving motor is arranged inside the driving box 270, the output end of the driving motor is transmission-connected with one end of the elliptical rod 240, the other end of the elliptical rod 240 is rotatably connected with another positioning rod 233, the driving box 270 and the elliptical rod 240 can be supported by the positioning rod 233, and the elliptical rod 240 can support the displacement mechanism 250; A camera 280 is provided at the bottom of the displacement mechanism 250, and a positioning box 260 is fixedly connected to the drawing board body 210. The positioning box 260 is arranged on a side of the drawing board body 210 close to the connecting frame 300. A connecting motor 261 is arranged inside the positioning box 260, and the output end of the connecting motor 261 is drivingly connected to a connecting screw 262 that is screwed together with the sliding seat 231. The adjustment module 100 is provided with a connecting frame 300, and a display screen 310 is arranged inside the connecting frame 300. The adjustment module 100 can support the drawing board body 210, and the adjustment module 100 can adjust the angle of the drawing board body 210. The paper pressing mechanism 220 can press the edge of the drawing paper to fix the drawing paper. The two limit rails 1 211 are respectively located at the two long sides of the drawing board body 210, and the length of the limit rail 1 211 is less than the length of the long side of the drawing board body 210. The two limit rails 2 212 are respectively located at the two short sides of the drawing board body 210.

[0020] Specifically, the drawing paper can be placed on the drawing board body 210, and then the drawing paper can be fixed by the paper pressing mechanism 220. The side rod 232 can be rotated on the sliding seat 231, and can be moved on the elliptical rod 240 through the displacement mechanism 250. At the same time, the connecting motor 261 can be driven to drive the connecting lead screw 262 to rotate. When the connecting lead screw 262 rotates, the sliding seat 231 can be moved along the width direction of the drawing board body 210, so as to adjust the position of the camera 280, so that the camera 280 is located above or on the side of the teacher. At the same time, the elliptical rod 240 can be driven to rotate by the driving motor. The elliptical rod 240 can drive the displacement mechanism 250 and the camera 280 to rotate, so that the camera 280 roughly corresponds to the painting position. In this way, when the teacher is painting, the painting process can be photographed by the camera 280 and then displayed on the display screen 310, which is beneficial to the art learning of hearing-impaired students, and relatively more students can learn at one time. When the teacher moves away from the drawing module 200 after painting a part, the position of the camera 280 can be adjusted so that the camera 280 is facing the painting. The painting process can be recorded step by step through the camera 280. By facing the camera 280 to the painting, the painting can be photographed more accurately, and the shooting angle can be minimized to tilt, so that the painting is deformed to a certain extent, which is beneficial to the copying of hearing-impaired students.

[0021] A remote controller can be configured. When multiple drawing papers with multiple step-by-step drawings are pre-drawn and placed on the drawing board body 210, the connecting motor 261, the driving motor, the displacement mechanism 250, etc. can be controlled to start through the remote controller. In this way, when the teacher walks around in the classroom for teaching, the position of the camera 280 can be adjusted through the remote controller so that the camera 280 corresponds to different drawings for continuous teaching. Embodiment 1

[0022] As Figure 10 shown in Figure 11 the figure, in this embodiment, the support mechanism 230 further includes a connecting shaft 234, a power motor one 235, a transmission shaft one 236, a worm two 237, and a worm gear two 238; The connecting shaft 234 is rotatably connected to the sliding seat 231. The end of the connecting shaft 234 is fixedly connected to a side rod 232. The first power motor 235 is arranged inside the sliding seat 231. Both the connecting shaft 234 and the first power motor 235 are located inside one end of the sliding seat 231. An L-shaped seat fixedly connected to the first power motor 235 is arranged inside the sliding seat 231. The L-shaped seat can support the first power motor 235. The first transmission shaft 236 is rotatably connected inside the sliding seat 231. The output end of the first power motor 235 is in transmission connection with the end of the first transmission shaft 236. The second worm 237 is fixedly sleeved on the first transmission shaft 236. The second worm gear 238 is fixedly sleeved on the connecting shaft 234. The second worm 237 and the second worm gear 238 are in meshing transmission. The side part of the sliding seat 231, the two side rods 232, and the positioning rod 233 can form a parallelogram. The second worm 237 and the second worm gear 238 can limit the rotation of the connecting shaft 234, and thus limit the rotation of the corresponding side rod 232, so as to limit the position of the positioning rod 233, and further limit the position of the elliptical rod 240.

[0023] During specific implementation, the first power motor 235 can drive the first transmission shaft 236 to rotate. The first transmission shaft 236 can drive the second worm gear 238 to rotate through the second worm 237. The second worm gear 238 can drive the connecting shaft 234 to rotate. The connecting shaft 234 can drive a side rod 232 to rotate. The side rod 232 can drive the adjacent positioning rod 233 to move. The positioning rod 233 can drive the displacement mechanism 250 and the camera 280 to move through the elliptical rod 240. In this way, the position of the camera 280 can be adjusted, the distance between the camera 280 and the drawing board body 210 can be changed, and during the adjustment process, the camera 280 is always facing the drawing board body 210. After adjusting to a suitable distance, the connecting motor 261 can be driven to drive the connecting lead screw 262 to rotate, adjust the position of the support mechanism 230, and further adjust the position of the camera 280 so that the camera 280 corresponds to the corresponding drawing paper, which is beneficial to improving the teaching effect.

[0024] As Figure 12 shown, in this embodiment, a rack 241 is embedded in the elliptical rod 240. The displacement mechanism 250 includes a sliding box 251, a second power motor 253, a second transmission shaft 254, and a connecting gear 255; The sliding box 251 is slidably connected to the elliptical rod 240. The sliding box 251 can slide along the elliptical rod 240. The camera 280 is embedded inside the sliding box 251. The second power motor 253 is arranged inside the sliding box 251. The second power motor 253 and the camera 280 are staggered from each other. The second transmission shaft 254 is rotatably connected inside the sliding box 251. The output end of the second power motor 253 is in transmission connection with one end of the second transmission shaft 254. The connecting gear 255 is fixedly sleeved on the second transmission shaft 254. The connecting gear 255 and the rack 241 are in meshing transmission.

[0025] During specific implementation, when the driving motor drives the elliptical rod 240 to rotate, since the cross-section of the elliptical rod 240 is elliptical, the elliptical rod 240 can drive the sliding box 251 to rotate, and then adjust the angle of the camera 280 as needed. The power motor two 253 can be driven to drive the transmission shaft two 254 to rotate, and the transmission shaft two 254 can drive the connecting gear 255 to rotate, so that the connecting gear 255 rolls along the rack 241, and the sliding box 251 moves along the elliptical rod 240, thereby adjusting the position of the camera 280 to make the camera 280 correspond to different drawing papers, which is beneficial to improving the teaching effect.

[0026] As Figure 2-4 shown, in this embodiment, the adjustment module 100 includes a chassis 110, two support columns 120, two connecting seats 130, and two adjustment frames 140; The chassis 110 is fixedly connected to the connecting frame 300. Both of the two support columns 120 are fixedly connected to the top of the chassis 110. The two connecting seats 130 are respectively rotatably connected to the two support columns 120. The two adjustment frames 140 are respectively fixedly connected to the two connecting seats 130. The drawing board body 210 is fixedly connected to the two adjustment frames 140. The sliding seat 231 can pass through the interiors of the two adjustment frames 140; An adjustment motor 121 is arranged inside one of the support columns 120. The output end of the adjustment motor 121 is drivingly connected to a first rotating shaft 122 that is rotatably connected to the support column 120. A first worm 123 is fixedly sleeved on the first rotating shaft 122. A second rotating shaft 124 that is rotatably connected to the adjacent connecting seat 130 is rotatably connected inside one of the support columns 120. A first worm gear 125 that meshes with the first worm 123 is fixedly sleeved on the second rotating shaft 124. The first worm 123 and the first worm gear 125 can limit the rotation of the second rotating shaft 124, and thus limit the rotation of the connecting seat 130, so as to limit the angle between the adjustment frame 140 and the drawing board body 210.

[0027] During specific implementation, the adjustment motor 121 can be driven to drive the first rotating shaft 122 to rotate. The first rotating shaft 122 can drive the second rotating shaft 124 to rotate through the first worm 123 and the first worm gear 125. The second rotating shaft 124 can drive the connecting seat 130 to rotate. The connecting seat 130 can drive the adjacent adjustment frame 140 to rotate, and then adjust the angle of the drawing board body 210, and adjust the drawing board body 210 to a suitable angle according to the teacher's height and the like.

[0028] As Figure 7-9 shown, in this embodiment, the paper pressing mechanism 220 includes a pressing rod 221, two connecting frames 222, two sliding blocks 226, two sliding frames 224, two plug-in blocks 225, and two return springs 228; The pressure rod 221 is arranged on the drawing board body 210. Both of the two connecting frames 222 are arranged on the drawing board body 210. The two connecting frames 222 are respectively located at the top and bottom of the drawing board body 210. The two sliding blocks 226 are respectively fixedly connected to the two connecting frames 222. Both of the two sliding blocks 226 are slidably connected to the inside of the adjacent limiting rail 211. The two sliding frames 224 are respectively slidably connected to the inside of the two connecting frames 222. The two plug-in blocks 225 are respectively rotatably connected to the two sliding frames 224. The pressure rod 221 is slidably connected to the inside of the two plug-in blocks 225. The bottom end of the pressure rod 221 is slidably connected to the inside of the plug-in block 225 located at the bottom. The top end of the pressure rod 221 passes through the inside of the plug-in block 225 located at the top. The plug-in block 225 located at the bottom can support the pressure rod 221. The two return springs 228 are respectively arranged inside the two connecting frames 222. The return spring 228 is fixedly connected to the inside of the adjacent sliding frame 224; The two connecting frames 222 are rotatably connected with a linkage rod 223. The sliding block 226 can move along the inside of the limiting rail 211, so that the connecting frame 222 moves along the limiting rail 211. And the two connecting frames 222 are connected by the linkage rod 223. In this way, the paper pressing mechanism 220 can be restricted on the drawing board body 210. The linkage rod 223 is fixedly connected with two semi-circular blocks 2231. A push rod 229 which is slidably connected to the connecting frame 222 is fixedly connected to the inside of the sliding frame 224. The two semi-circular blocks 2231 are respectively located inside the two connecting frames 222, and the two semi-circular blocks 2231 respectively correspond to the two push rods 229. An arc surface is arranged on the side of the semi-circular block 2231.

[0029] During specific implementation, under the action of the return spring 228, the position of the sliding frame 224 can be restricted. The sliding frame 224 can restrict the position of the plug-in block 225, and further restrict the position of the pressure rod 221, so that the pressure rod 221 abuts against the drawing board body 210. The linkage rod 223 can be rotated. The linkage rod 223 can drive the two semi-circular blocks 2231 thereon to rotate. The arc surface of the semi-circular block 2231 can extrude the push rod 229, and further make the push rod 229 push the sliding frame 224 to move. The sliding frame 224 can push the pressure rod 221 to move through the plug-in block 225, so that the pressure rod 221 moves away from the drawing board body 210. When the middle part of the semi-circular block 2231 abuts against the end of the push rod 229, the abutment against the push rod 229 can be maintained through the semi-circular block 2231. At this time, the pressure rod 221 can be pushed to move along the drawing board body 210 to adjust the position of the paper pressing mechanism 220, so that the pressure rod 221 corresponds to the edge of the drawing paper. Then the linkage rod 223 can be rotated in the reverse direction to stagger the semi-circular block 2231 and the push rod 229. At this time, under the action of the return spring 228, the sliding frame 224 can move towards the inside of the connecting frame 222. The sliding frame 224 can drive the pressure rod 221 to move through the plug-in block 225. In this way, the pressure rod 221 can press the edge of the drawing paper against the drawing board body 210 to fix the drawing paper; When fixing fewer drawing papers, the paper pressing mechanism 220 can be moved towards the edge of the first limiting rail 211, so that the sliding block 226 is disengaged from the first limiting rail 211. Then, the pressing rod 221 can be moved upward to disengage the bottom end of the pressing rod 221 from the bottom inserting block 225. Then, the bottom inserting block 225 is rotated relative to the sliding frame 224 to stagger the bottom inserting block 225 from the bottom end of the pressing rod 221. Then, the pressing rod 221 is moved downward to disengage the top of the pressing rod 221 from the top inserting block 225, so as to remove the pressing rod 221 from the two inserting blocks 225. At this time, the connecting frame 222 can be removed from the drawing board body 210, thereby reducing the number of paper pressing mechanisms 220 on the drawing board body 210. When it is necessary to fix multiple drawing papers, the two connecting frames 222 can be respectively abutted against the top and bottom of the drawing board body 210, and the sliding block 226 is inserted into the first limiting rail 211. Then, the bottom inserting block 225 is staggered from the pressing rod 221. After the pressing rod 221 is inserted into the top inserting block 225, the bottom inserting block 225 is rotated to the original position to insert the bottom of the pressing rod 221 into the bottom inserting block 225, so as to increase the number of paper pressing mechanisms 220 as needed. Embodiment 2

[0030] On the basis of Embodiment 1, as Figure 3 shown, in this embodiment, the support column 120 is provided with an abutting mechanism 150, and the abutting mechanism 150 includes a fixed frame 151, an abutting rod 152, and a positioning screw rod 153; The fixed frame 151 is fixedly connected to the support column 120. The abutting rod 152 is slidably connected inside the fixed frame 151. The end of the abutting rod 152 contacts the side of the adjusting frame 140. The positioning screw rod 153 is rotatably connected inside the fixed frame 151. The positioning screw rod 153 is threadedly connected to the inside of the abutting rod 152, and the positioning screw rod 153 can limit the position of the abutting rod 152.

[0031] During specific implementation, after adjusting the angle of the drawing board body 210 by driving the first rotating shaft 122 to rotate through the adjusting motor 121, the positioning screw rod 153 can be rotated. The rotation of the positioning screw rod 153 can make the abutting rod 152 move along the inside of the fixed frame 151, so that the end of the abutting rod 152 abuts against the adjusting frame 140. In this way, the bottom of the adjusting frame 140 can be supported by the abutting rod 152, thereby supporting the drawing board body 210, which is beneficial to improving the stability of the drawing board body 210.

[0032] As Figure 9 shown, in this embodiment, the inserting block 225 is fixedly connected with a limiting shaft 2251 that is rotatably connected to the adjacent sliding frame 224. A torsion spring 227 is arranged on the side of the limiting shaft 2251, and the torsion spring 227 is located between the side of the limiting shaft 2251 and the inside of the sliding frame 224.

[0033] During specific implementation, when the pressure bar 221 is pressed against the drawing board body 210 under the action of the return spring 228, the torsion spring 227 will be in a torsion state. When the linkage rod 223 is rotated, the semi-circular block 2231 will push up the push rod 229. When the pressure bar 221 moves away from the drawing board body 210, under the action of the torsion spring 227, the limit shaft 2251 can rotate within the sliding frame 224. The limit shaft 2251 can drive the plug-in block 225 to rotate, and the plug-in block 225 can drive the pressure bar 221 to rotate, thereby tilting the pressure bar 221. In this way, only the edge of the pressure bar 221 can be pressed against the drawing board body 210. When the pressure bar 221 is pushed to move, the edge of the pressure bar 221 can flatten the drawing paper, which is beneficial to keeping the drawing paper neat and beneficial to the camera 280 to capture the drawing paper.

[0034] As Figure 8 shown, in this embodiment, the pressure bar 221 is provided with a groove 2211, and the drawing board body 210 is fixedly connected with a U-shaped frame 213.

[0035] During specific implementation, a relatively small-sized display, tablet, etc. can be placed in the U-shaped frame 213, and then the position of the paper pressing mechanism 220 can be moved to make the groove 2211 correspond to the edge of the display. The display can be positioned through the U-shaped frame 213 and the groove 2211, and the image captured by the camera 280 can be displayed through the display. In this way, during drawing, it is convenient to know the shooting position of the camera 280, which is beneficial to timely adjust the camera 280 to a suitable position.

[0036] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotatable drawing paper fixing art teaching drawing board for hearing-impaired students, comprising an adjustment module (100), a drawing module (200) is arranged on the top of the adjustment module (100), the drawing module (200) includes a drawing board body (210), two first limiting rails (211) and two second limiting rails (212) are fixedly connected to the drawing board body (210), and it is characterized in that, The drawing board body (210) is provided with a number of paper pressing mechanisms (220). A support mechanism (230) is provided on the side of the drawing board body (210). The support mechanism (230) includes a sliding seat (231). The sliding seat (231) is slidably connected to two second limiting rails (212). Both ends of the sliding seat (231) are rotatably connected to two side rods (232). The tops of adjacent two side rods (232) are rotatably connected to a positioning rod (233). An elliptical rod (240) is arranged between the two positioning rods (233). The elliptical rod (240) is provided with a displacement mechanism (250). A camera (280) is arranged at the bottom of the displacement mechanism (250). The drawing board body (210) is fixedly connected with a positioning box (260). A connecting motor (261) is arranged inside the positioning box (260). The output end of the connecting motor (261) is drivingly connected with a connecting lead screw (262) which is in screw fit connection with the sliding seat (231). The adjusting module (100) is provided with a connecting frame (300). A display screen (310) is arranged inside the connecting frame (300).

2. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 1, characterized in that, The support mechanism (230) further includes: A connecting shaft (234) which is rotatably connected to the sliding seat (231), and the end of the connecting shaft (234) is fixedly connected with a side rod (232); A first power motor (235) which is arranged inside the sliding seat (231); A first transmission shaft (236) which is rotatably connected inside the sliding seat (231), and the output end of the first power motor (235) is drivingly connected with the end of the first transmission shaft (236); A second worm (237) which is fixedly sleeved on the first transmission shaft (236); A second worm gear (238) which is fixedly sleeved on the connecting shaft (234), and the second worm (237) is in meshing transmission with the second worm gear (238).

3. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 1, characterized in that, One end of the elliptical rod (240) is provided with a driving box (270) which is fixedly connected with a positioning rod (233). A driving motor is arranged inside the driving box (270), and the output end of the driving motor is drivingly connected with one end of the elliptical rod (240).

4. The rotatable drawing paper fixed hearing-impaired student art teaching drawing board according to any one of claims 1-3, characterized in that, The adjusting module (100) includes: A chassis (110); Two support columns (120), both fixedly connected to the top of the chassis (110); Two connecting seats (130), respectively rotatably connected to the two support columns (120); Two adjusting frames (140), respectively fixedly connected to the two connecting seats (130), and the drawing board body (210) is fixedly connected with the two adjusting frames (140).

5. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 4, characterized in that, The support column (120) is provided with an abutting mechanism (150).

6. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 4, characterized in that, An adjusting motor (121) is arranged inside one support column (120). The output end of the adjusting motor (121) is drivingly connected with a first rotating shaft (122) which is rotatably connected to the support column (120). A first worm (123) is fixedly sleeved on the first rotating shaft (122). A second rotating shaft (124) which is rotatably connected inside one support column (120) and is fixedly connected with the adjacent connecting seat (130) is fixedly sleeved with a first worm gear (125) which is in meshing with the first worm (123).

7. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to any one of claims 1-3, characterized in that, The paper pressing mechanism (220) includes: A pressing rod (221) which is arranged on the drawing board body (210); Two connecting frames (222), both arranged on the drawing board body (210); Two sliding blocks (226), respectively fixedly connected to the two connecting frames (222), and both the two sliding blocks (226) are slidably connected to the inside of the adjacent limiting rail one (211); Two sliding frames (224), respectively slidably connected to the inside of the two connecting frames (222); Two plug-in blocks (225), respectively rotatably connected to the two sliding frames (224), and the pressing rod (221) is slidably connected to the inside of the two plug-in blocks (225); Two return springs (228), respectively arranged inside the two connecting frames (222), and the return springs (228) are fixedly connected to the inside of the adjacent sliding frame (224).

8. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 7, characterized in that The pressing rod (221) is provided with a groove (2211), and the drawing board body (210) is fixedly connected with a U-shaped frame (213).

9. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 7, characterized in that, The two connecting frames (222) are rotatably connected with a linkage rod (223), the linkage rod (223) is fixedly connected with two semi-circular blocks (2231), and the inside of the sliding frame (224) is fixedly connected with a push rod (229) slidably connected to the connecting frame (222).

10. The rotatable drawing paper-fixed art teaching drawing board for hearing-impaired students according to claim 7, characterized in that, The plug-in block (225) is fixedly connected with a limiting shaft (2251) rotatably connected to the adjacent sliding frame (224), and a torsion spring (227) is arranged on the side of the limiting shaft (2251).

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