CN114304900A - A desk for correcting students' reading and writing posture - Google Patents

Abstract

The invention relates to a desk, in particular to a desk for correcting reading and writing postures of students. The desk capable of correcting the sitting posture of the student during learning and correcting the reading and writing posture of the student without influencing the growth and development of the student needs to be designed. The utility model provides a correct desk of student's reading and writing posture, is including landing leg, book steamer tray, table, press the depression bar, fixing device, correcting unit etc. and landing leg quantity is two, and the rigid coupling has the book steamer tray between two landing leg tops, and book steamer tray top rigid coupling has the table, presses the depression bar and can correct student's position of sitting, is equipped with the fixing device who is used for the installation on the book steamer tray, is equipped with the correcting device who is used for adjusting on the fixing device, correcting device and press depression bar fixed connection. According to the invention, after the pressing rod is adjusted to a proper position, a student can sit on the front side of the desk, the shoulders are in contact with the pressing rod, a good sitting posture can be always kept, and after reading and writing are finished, the shoulders are separated from the pressing rod, so that the sitting posture of the student during learning can be corrected, and the growth and development of the student are not influenced.

Description

A desk for correcting students' reading and writing posture

technical field

The invention relates to a desk, in particular to a desk for correcting students' reading and writing posture.

Background technique

In today's society, the education of children is more and more advanced, and homework is an indispensable part of educational activities, especially for young students at a critical stage of growth and development. Students at this stage have a direct or indirect influence on their learning posture. growth and development.

Patent application CN210018387U, published on 20200207, discloses a desk that is easy to transport, including a desk board, a desk drawer below the desk board, and four supporting legs installed under the desk drawer. The desk drawer is made of Four wooden boards and classroom table top boards are spliced together. The classroom top board and the four wooden boards are spliced together in a mortise-and-mortise structure. There are support grooves at the bottom of the supporting table legs. A permanent magnet is installed, a moving column is arranged below the permanent magnet, the top of the moving column is attracted and fixed by the permanent magnet, and a pressing device is connected between the moving columns, and the pressing device drives the moving column to move up and down in the support groove, and the The lower end is interspersed with an ejection pulley, which extends out of the support groove under the drive of the moving column, and is convenient for students to carry with the help of the ejection pulley. At the same time, a support groove is set to accommodate the ejection pulley to improve the stability of the desk. Although the device is convenient for students to carry, in the process of learning, sitting posture is often not correct, which affects the growth and development of students.

Therefore, it is necessary to design and develop a desk that corrects the students' reading and writing postures, which can correct the students' sitting postures during learning and does not affect the students' growth and development, so as to solve the problems of the prior art.

SUMMARY OF THE INVENTION

In order to overcome the shortcomings of improper sitting posture and affecting the growth and development of students during the learning process, the present invention provides a desk for correcting the reading and writing posture of students that can correct the sitting posture of the students during learning without affecting the growth and development of the students.

The present invention is realized through the following technical approaches:

A desk for correcting students' reading and writing posture, comprising legs, a book drawer, a table board, a pressing rod, a fixing device and a correcting device, the number of the legs is two, and a book drawer is fixedly connected between the tops of the two legs The top of the book drawer is fixed with a table board, and the pressing rod can correct the sitting posture of the students. The book drawer is provided with a fixing device for installation, and the fixing device is provided with a correction device for adjustment.

Further, the fixing device includes a first mounting plate, a supporting plate, a first rotating shaft, a first rotating block, a first mounting block and a connecting cylinder, and a first mounting plate is fixed in the middle of the outer left side of the book drawer, and the first The middle part of the left side of the installation plate is fixed with a support plate, the upper side of the front part of the support plate is rotatably provided with a first rotating shaft, the middle part of the first rotating shaft is fixed with a first rotating block, and the top of the first rotating block is fixed with a first installation block, The upper part of the right side surface of the first installation block is fixedly connected with a connecting cylinder.

Further, the correction device includes a second rotating block, a second mounting block, a T-shaped sliding column, a guide plate, a guide block, a rotating ring and a guide rod, and the right part of the connecting cylinder is rotatably provided with a second rotating block, and the second The top of the rotating block is fixed with a second installation block, the middle of the second installation block is slidably provided with a T-shaped sliding column, the T-shaped sliding column is fixedly connected with the pressing rod, the lower part of the T-shaped sliding column is fixed with a guide plate, and the second installation block A guide block is fixed symmetrically in the middle part, a rotating ring is arranged between the left and right guide blocks, and two guide rods are arranged on the right side of the front part of the rotating ring, and the guide rods are in contact with the guide plate.

Further, it also includes a locking device for limiting, and the locking device includes a fixing ring, a limiting block, a fixing block, a hinged frame, a double-ended hook plate, a first torsion spring and a second torsion spring, and the right part of the connecting cylinder is connected. A fixing ring is fixedly connected, two limit blocks are fixedly connected to the rear of the outer side of the fixing ring, and a fixing block is fixedly connected to the rear and lower part of the left side of the second installation block. A double-headed hook plate for locking the position is fixedly connected, a first torsion spring is wound around the left part of the hinge frame, one end of the first torsion spring is connected with the double-headed hook plate, the other end of the first torsion spring is connected with the fixing block, and the right side of the hinge frame is connected. A second torsion spring is wound around the part, one end of the second torsion spring is connected with the double-ended hook plate, and the other end of the second torsion spring is connected with the fixing block.

Further, it also includes a drive device for synchronous driving. The drive device includes a second rotating shaft, a guide column gear, a rotating column gear, a third rotating shaft, a transmission assembly, a connecting shaft and a bevel gear. The rear of the first installation block is in the lower middle. The side-rotating type is provided with a second rotating shaft. The rear of the first rotating shaft is fixed with a guide column gear, and the rear of the second rotating shaft is fixed with a rotating column gear. The guide column gear is meshed with the rotating column gear. The middle-side rotary type is provided with a third rotating shaft. A transmission assembly is connected between the rear of the third rotating shaft and the rear of the second rotating shaft. The transmission assembly consists of two pulleys and belts. One pulley is installed at the rear of the third rotating shaft, and the other The pulley is installed at the rear of the second rotating shaft, and the belt is wound between the two pulleys. A connecting shaft is rotatably provided inside the connecting cylinder for synchronous swinging. The right end of the connecting shaft is fixedly connected to the right side of the second rotating block, and the left part of the connecting shaft A bevel gear is fixedly connected with the front part of the third rotating shaft, and the two bevel gears are engaged with each other.

Further, it also includes a juxtaposition device for bringing the legs together, and the leg juxtaposition device includes a second mounting plate, a limit plate, a sliding rod, a pressing plate and a return spring, and a second mounting plate is fixed in the middle of the inner side of the outrigger. The mounting plate, the inner side of the second mounting plate is fixed with a limit plate, the limit plate is provided with sliding rods in front and rear symmetrical sliding, and the inner ends of the sliding rods on the front and rear sides are fixed with a squeeze plate for bringing the legs together. A reset spring is wound around the sliding rod, one end of the reset spring is connected with the limit plate, and the other end of the reset spring is connected with the extrusion plate.

Further, it also includes a holding device for placing the water cup. The holding device includes a third mounting plate, a support frame and a cup holder. A support frame is fixedly connected to the middle of the right side, and a cup holder for placing a water cup is arranged at the front of the support frame.

Further, small rubber bumps are arranged on the rotating ring at intervals.

Compared with the prior art, the significant progress of the present invention lies in:

1. After the present invention adjusts the pressing rod to a suitable position, the students can sit on the front side of the desk, the shoulders are in contact with the pressing rod, and a good sitting posture can be maintained all the time. Yes, in this way, the sitting posture of the students can be corrected without affecting the growth and development of the students.

2. In the present invention, under the action of the driving device, the reverse rotation of the third rotating shaft drives the connecting shaft to reverse rotation through the bevel gear, and the reverse rotation of the connecting shaft drives the second rotating block to swing upward, and the second mounting block also swings upward to a vertical state. In this way, the first mounting block and the third mounting plate of the holding device are synchronously oscillated.

3. Under the action of the holding device, the present invention can place the water cup in the cup holder, so as to avoid accidentally touching the cup and causing water to splash out, so that it is convenient for people to place the water cup.

Description of drawings

FIG. 1 is a schematic diagram of a first three-dimensional structure of the present invention.

FIG. 2 is a schematic diagram of a second three-dimensional structure of the present invention.

FIG. 3 is a schematic cross-sectional structure diagram of the fixing device of the present invention.

Figure 4 is an enlarged schematic view of Part A of the present invention.

FIG. 5 is a schematic three-dimensional structure diagram of the correction device of the present invention.

FIG. 6 is a schematic cross-sectional view of the first type of the rectifying device of the present invention.

FIG. 7 is a schematic diagram of a second cross-sectional structure of the rectifying device of the present invention.

FIG. 8 is a schematic three-dimensional structure diagram of the locking device of the present invention.

FIG. 9 is a schematic cross-sectional view of the locking device of the present invention.

FIG. 10 is a schematic three-dimensional structure diagram of the driving device of the present invention.

FIG. 11 is a partial three-dimensional schematic diagram of the parallel leg device of the present invention.

FIG. 12 is a schematic three-dimensional structure diagram of the holding device of the present invention.

Wherein, the above drawings include the following reference numerals: 1-leg, 2-book drawer, 3-table board, 4-pressing rod, 5-fixing device, 51-first mounting plate, 52-supporting plate, 53- The first rotating shaft, 54-the first rotating block, 55-the first installation block, 56-connecting cylinder, 6-correcting device, 61-the second rotating block, 62-the second installation block, 63-T-type sliding column, 64 -Guide plate, 65-Guide block, 66-Rotating ring, 67-Guide rod, 7-Locking device, 71-Fixing ring, 72-Limiting block, 73-Fixing block, 74-Hinged frame, 75-Double-ended hook plate, 76-first torsion spring, 77-second torsion spring, 8-drive device, 81-second shaft, 82-guide column gear, 83-rotation column gear, 84-third shaft, 85-transmission assembly, 86-connecting shaft, 87-bevel gear, 9-parallel device, 91-second installation plate, 92-limiting plate, 93-slide rod, 94-extrusion plate, 95-return spring, 10-supporting device , 101-the third mounting plate, 102-support frame, 103-cup holder.

Detailed ways

The present invention is further described below with reference to the accompanying drawings of the specification, and embodiments of the present invention are given in conjunction with the accompanying drawings of the specification.

Example 1

A desk for correcting students' reading and writing posture, as shown in Figures 1-7, includes legs 1, book drawers 2, table boards 3, pressing rods 4, fixing devices 5 and correction devices 6, and the number of legs 1 There are two books, a book drawer 2 is fixed between the tops of the two legs 1, a table board 3 is fixed on the top of the book drawer 2, the pressing rod 4 can correct the sitting posture of the students, the book drawer 2 is provided with a fixing device 5, the fixing device A correcting device 6 is provided on the 5, and the fixing device 5 can realize the installation of the correcting device 6. The correcting device 6 is fixedly connected with the pressing rod 4, and the correcting device 6 can realize the adjustment of the upper and lower positions of the pressing rod 4.

As shown in FIG. 1-FIG. 5, the fixing device 5 includes a first mounting plate 51, a supporting plate 52, a first rotating shaft 53, a first rotating block 54, a first mounting block 55 and a connecting cylinder 56. A first installation plate 51 is fixedly connected to the middle of the side surface, and a support plate 52 is fixed to the middle of the left side of the first installation plate 51. The upper side of the front of the support plate 52 is rotatably provided with a first rotating shaft 53, and the middle of the first rotating shaft 53 is fixed. A first rotating block 54 is connected, the top of the first rotating block 54 is fixed with a first installation block 55 , and the upper part of the right side of the first installation block 55 is fixed with a connecting cylinder 56 .

As shown in FIGS. 1 , 6 and 7 , the straightening device 6 includes a second rotating block 61 , a second mounting block 62 , a T-shaped sliding column 63 , a guide plate 64 , a guide block 65 , a rotating ring 66 and a guide rod 67 , the right part of the connecting cylinder 56 is rotatably provided with a second rotating block 61, the top of the second rotating block 61 is fixed with a second mounting block 62, and the middle of the second mounting block 62 is slidably provided with a T-shaped sliding column 63, and the T-shaped sliding The column 63 is fixedly connected with the pressing rod 4, the lower part of the T-shaped sliding column 63 is fixed with a guide plate 64, and the guide plate 64 is in a spiral shape. A rotating ring 66 is rotatably provided between, and the outer side of the rotating ring 66 is spaced with small rubber bumps.

When people use the device, the first mounting block 55 can be pulled by the first rotating block 54 to swing upward, and the first mounting block 55 can swing upward to drive the connecting cylinder 56 to swing to the right in a horizontal state, and the second rotating block 61 can pull the first mounting block 55 to the right. The second mounting block 62 swings up to a vertical state, and the pressing rod 4 is flush with the students. Then, the pressing rod 4 can be adjusted by twisting the rotating ring 66 as required. The small rubber bump can increase the friction force with the hand, such as The pressing rod 4 needs to be adjusted upwards, the forward rotation of the twisting ring 66 drives the forward rotation of the guide rod 67, the forward rotation of the guide rod 67 drives the T-shaped sliding column 63 to move upward through the guide plate 64, and the T-shaped sliding column 63 moves upward to drive the pressing rod 4 Move up, the pressing rod 4 moves up to a suitable position, stop twisting the rotating ring 66, and the guide rod 67 stops driving the T-shaped sliding column 63 to move upward through the guide plate 64. Similarly, if you need to adjust the pressing rod 4 downward, twist and rotate The ring 66 is reversed so that the T-shaped sliding column 63 drives the pressing rod 4 to move downward, the pressing rod 4 moves down to a suitable position, and stops twisting and rotating the ring 66, and the students can sit on the front side of the desk, with their shoulders and The pressing rod 4 is in contact and repeated in this way, and a good sitting posture can be maintained all the time.

Example 2

On the basis of Embodiment 1, as shown in FIG. 1 , FIG. 8 and FIG. 9 , a locking device 7 is also included. The locking device 7 includes a fixing ring 71 , a limit block 72 , a fixing block 73 , a hinge frame 74 , The double-headed hook plate 75 , the first torsion spring 76 and the second torsion spring 77 , a fixing ring 71 is fixed on the right part of the connecting cylinder 56 , and two limit blocks 72 are fixed on the rear part of the outer side of the fixing ring 71 . The second installation A fixed block 73 is fixedly connected to the rear and lower part of the left side of the block 62. The rear of the fixed block 73 is rotatably provided with a hinged frame 74. The middle of the hinged frame 74 is fixed with a double-headed hook plate 75. A first torsion spring 76 is wound around the left part of the hinge frame 74, one end of the first torsion spring 76 is connected with the double-headed hook plate 75, the other end of the first torsion spring 76 is connected with the fixing block 73, and the right part of the hinge frame 74 is wound with a second torsion spring 76. One end of the second torsion spring 77 is connected to the double-ended hook plate 75 , and the other end of the second torsion spring 77 is connected to the fixing block 73 .

As shown in FIG. 2 and FIG. 10 , a driving device 8 is also included. The driving device 8 includes a second rotating shaft 81 , a guide spur gear 82 , a rotating spur gear 83 , a third rotating shaft 84 , a transmission assembly 85 , a connecting shaft 86 and a cone Gear 87, the lower side of the rear of the first installation block 55 is rotatably provided with a second rotating shaft 81, the rear of the first rotating shaft 53 is fixed with a guide column gear 82, the rear of the second rotating shaft 81 is fixed with a rotating column gear 83, the guide column The gear 82 is meshed with the rotating column gear 83 , the middle and upper side of the rear of the first installation block 55 is rotatably provided with a third rotating shaft 84 , and a transmission assembly 85 is connected between the rear of the third rotating shaft 84 and the rear of the second rotating shaft 81 , The transmission assembly 85 is composed of two pulleys and a belt. One pulley is installed at the rear of the third rotating shaft 84, and the other pulley is installed at the rear of the second rotating shaft 81. The belt is wound between the two pulleys. There is a connecting shaft 86. When the first mounting block 55 swings upward, the connecting shaft 86 can drive the second rotating block 61 to swing upward. The right end of the connecting shaft 86 is fixedly connected with the right side of the second rotating block 61, and the left part of the connecting shaft 86 is fixedly connected. A bevel gear 87 is fixedly connected to the front part of the third rotating shaft 84 , and the two bevel gears 87 mesh with each other.

When the second mounting block 62 is pulled to swing upward, the second rotating block 61 drives the fixed block 73 to move backward, the backward movement of the fixed block 73 drives the hinge frame 74 to move backward, and the hinge frame 74 moves backward to drive the double-headed hook plate 75 When moving backward, the double-ended hook plate 75 moves backward and contacts the rear limit block 72. Due to the action of the first torsion spring 76 and the second torsion spring 77, the double-ended hook plate 75 moves backward and slides up from the rear limit block 72. Then, the double-headed hook plate 75 limits the position of the rear limit block 72, and the second rotating block 61 is also limited, and when people need to pull the second mounting block 62 to swing down and reset, press the double-headed hook plate 75. The upper part swings forward, the first torsion spring 76 and the second torsion spring 77 are stretched, the upper part of the double-ended hook plate 75 swings forward to make the lower part swing backward, and the lower part of the double-ended hook plate 75 swings backward to stop the rear limit block 72 is disengaged, and the double-headed hook plate 75 is released. Due to the action of the first torsion spring 76 and the second torsion spring 77, the double-headed hook plate 75 swings and resets, so that the second mounting block 62 can be pulled down to swing and reset. Similarly, The second rotating block 61 drives the fixed block 73 to move forward and reset, the double-headed hook plate 75 moves backward and slides over the front limit block 72, and the double-headed hook plate 75 limits the front limit block 72. In this way, it can be avoided that The second rotating block 61 moves.

When the first mounting block 55 is pulled by the first rotating block 54 to swing upward, the first mounting block 55 swings upward to drive the first rotating shaft 53 to rotate forward, and the forward rotation of the first rotating shaft 53 drives the guide column gear 82 to rotate forward, and the guide column gear 82 The forward rotation drives the rotating column gear 83 to reverse, the rotating column gear 83 reverses the rotation to drive the second rotating shaft 81 to reverse, the second rotating shaft 81 reverses the rotation to drive the transmission assembly 85 to reverse, and the transmission assembly 85 reverses to drive the third rotating shaft 84 to reverse. The reverse rotation of the third rotating shaft 84 drives the connecting shaft 86 to reverse rotation through the bevel gear 87, and the reverse rotation of the connecting shaft 86 drives the second rotating block 61 to swing upward, and the second mounting block 62 also swings upward to a vertical state. When the first mounting block 55 swings down and resets, the third rotating shaft 84 drives the connecting shaft 86 to rotate forward through the bevel gear 87, and the second rotating block 61 drives the third mounting plate 101 to swing and reset downward. The block 55 and the third mounting plate 101 swing synchronously.

Example 3

On the basis of Embodiment 1 and Embodiment 2, as shown in FIG. 1 , FIG. 2 and FIG. 11 , a parallel leg device 9 is further included, and the leg parallel device 9 includes a second mounting plate 91 , a limit plate 92 , The sliding rod 93, the pressing plate 94 and the return spring 95, the inner middle of the outrigger 1 is fixed with a second mounting plate 91, the inner side of the second mounting plate 91 is fixed with a limit plate 92, and the limit plate 92 is symmetrically sliding front and rear A sliding rod 93 is provided, and a pressing plate 94 is fixed between the inner ends of the sliding rods 93 on the front and rear sides. The limiting plate 92 is connected, and the other end of the return spring 95 is connected to the pressing plate 94 .

As shown in FIG. 1 , FIG. 2 and FIG. 12 , a holding device 10 is also included. The holding device 10 includes a third mounting plate 101 , a support frame 102 and a cup holder 103 , and the middle part of the outer right side of the book drawer 2 is fixedly connected There is a third mounting plate 101 , a support frame 102 is fixed in the middle of the right side of the third mounting plate 101 , and a cup holder 103 is arranged at the front of the support frame 102 , and the cup holder 103 can be used to place a water cup.

When people sit up to the front of the desk, their feet are in contact with the pressing plate 94. Due to the action of the return spring 95, the pressing plate 94 always presses the legs together, so that a good sitting posture can be maintained.

When people use the desk, the water cup can be placed in the cup holder 103, so as to avoid accidentally touching the cup and causing water to splash out, so that it is convenient for people to place the water cup.

Finally, it should be noted that: the above-mentioned content is only used to help understand the technical solution of the present invention, and should not be construed as a limitation to the protection scope of the present invention; non-essential improvements and adjustments made by those skilled in the art according to the above-mentioned content of the present invention , all belong to the protection scope of the present invention.

Claims (8)

1. A desk for correcting students' reading and writing posture, comprising outriggers (1), a book drawer (2), a table board (3), a pressing rod (4), and the number of outriggers (1) is two. A book drawer (2) is fixedly connected between the tops of the outriggers (1), a table board (3) is fixedly connected to the top of the book drawer (2), and the pressing rod (4) can correct the sitting posture of the students. The fixing device (5) and the rectifying device (6), the book drawer (2) is provided with a fixing device (5) for installation, the fixing device (5) is provided with a rectifying device (6) for adjustment, and the rectifying device (6) ) is fixedly connected to the pressing rod (4). 2. A desk for correcting students' reading and writing posture according to claim 1, wherein the fixing device (5) comprises a first mounting plate (51), a supporting plate (52), a first rotating shaft (53) ), the first rotating block (54), the first mounting block (55) and the connecting cylinder (56). 51) A support plate (52) is fixedly connected to the middle of the left side, the upper side of the front of the support plate (52) is rotatably provided with a first rotating shaft (53), and a first rotating block (53) is fixed to the middle of the first rotating shaft (53). 54), a first installation block (55) is fixedly connected to the top of the first rotating block (54), and a connecting cylinder (56) is fixedly connected to the upper part of the right side of the first installation block (55). 3. A desk for correcting students' reading and writing posture according to claim 2, characterized in that the correcting device (6) comprises a second rotating block (61), a second mounting block (62), a T-shaped sliding block The column (63), the guide plate (64), the guide block (65), the rotating ring (66) and the guide rod (67), the right part of the connecting cylinder (56) is rotatably provided with a second rotating block (61), the second A second mounting block (62) is fixedly connected to the top of the rotating block (61). The middle of the second mounting block (62) is slidably provided with a T-shaped sliding column (63), a T-shaped sliding column (63) and a pressing rod (4). Fixed connection, a guide plate (64) is fixedly connected to the lower part of the T-shaped sliding column (63), and a guide block (65) is fixed symmetrically in the middle of the second installation block (62), and the guide blocks (65) on the left and right sides rotate between the two sides. The rotary ring (66) is provided with a rotating ring (66), and two guide rods (67) are provided on the right side of the front part of the rotating ring (66), and the guide rods (67) are in contact with the guide plate (64). 4. A desk for correcting students' reading and writing posture according to claim 3, characterized in that it further comprises a locking device (7) for limiting the position, and the locking device (7) comprises a fixing ring (71), Limiting block (72), fixing block (73), hinge frame (74), double-headed hook plate (75), first torsion spring (76) and second torsion spring (77), right part of connecting cylinder (56) A fixing ring (71) is fixedly connected, two limit blocks (72) are fixedly connected to the rear of the outer side of the fixing ring (71), and a fixing block (73) is fixedly connected to the rear and lower part of the left side of the second installation block (62). , the rear of the fixing block (73) is rotatably provided with a hinged frame (74), the middle of the hinged frame (74) is fixed with a double-headed hook plate (75) for locking the limit, and the left part of the hinged frame (74) is surrounded by a third A torsion spring (76), one end of the first torsion spring (76) is connected to the double-ended hook plate (75), the other end of the first torsion spring (76) is connected to the fixing block (73), and the right part of the hinge frame (74) is wound around There is a second torsion spring (77), one end of the second torsion spring (77) is connected to the double-ended hook plate (75), and the other end of the second torsion spring (77) is connected to the fixing block (73). 5. A desk for correcting students' reading and writing posture according to claim 4, further comprising a driving device (8) for synchronous driving, the driving device (8) comprising a second rotating shaft (81) , guide column gear (82), rotating column gear (83), third shaft (84), transmission assembly (85), connecting shaft (86) and bevel gear (87), the lower middle of the rear of the first mounting block (55) The side-rotating type is provided with a second rotating shaft (81), a guide column gear (82) is fixedly connected to the rear of the first rotating shaft (53), and a rotating column gear (83) is fixedly connected to the rear of the second rotating shaft (81). The gear (82) meshes with the rotating column gear (83), and a third rotating shaft (84) is rotatably provided on the upper and middle side of the rear of the first mounting block (55). The rear of the third rotating shaft (84) is connected to the second rotating shaft ( 81) A transmission assembly (85) is connected between the rear parts, and the transmission assembly (85) consists of two pulleys and belts, one pulley is installed at the rear of the third shaft (84), and the other pulley is installed on the second shaft (81) ) at the rear, the belt is wound between the two pulleys, the connecting cylinder (56) is internally rotatably provided with a connecting shaft (86) for synchronous swinging, the right end of the connecting shaft (86) and the right side of the second rotating block (61) Fixed connection, the left part of the connecting shaft (86) and the front part of the third rotating shaft (84) are fixedly connected with a bevel gear (87), and the two bevel gears (87) are engaged with each other. 6. A desk for correcting students' reading and writing posture according to claim 5, characterized in that it further comprises a leg-aligning device (9) for bringing the legs together, and the leg-aligning device (9) includes a second The mounting plate (91), the limit plate (92), the sliding rod (93), the pressing plate (94) and the return spring (95), the inner middle of the outrigger (1) is fixed with a second mounting plate (91), The limit plate (92) is fixedly connected to the inner side of the second mounting plate (91), and the limit plate (92) is provided with sliding rods (93) in a symmetrical sliding manner in front and rear. A pressing plate (94) for bringing the legs together is connected, a return spring (95) is wound around the sliding rod (93), one end of the return spring (95) is connected with the limit plate (92), and the other end of the return spring (95) is One end is connected to the squeeze plate (94). 7. A desk for correcting students' reading and writing posture according to claim 6, characterized in that it further comprises a holding device (10) for placing a water cup, and the holding device (10) comprises a third mounting plate (101), the support frame (102) and the cup holder (103), a third mounting plate (101) is fixedly connected to the middle of the outer right side of the book drawer (2), and the middle of the right side of the third mounting plate (101) is fixedly connected There is a support frame (102), and a cup holder (103) for placing a water cup is arranged at the front of the support frame (102). 8. A desk for correcting students' reading and writing posture according to claim 7, characterized in that small rubber bumps are provided at intervals on the rotating ring (66).

Images