CN218960295U - Desk and chair for students - Google Patents

Abstract

The utility model discloses a desk for students, which comprises a desk bucket and a support frame for supporting the desk bucket, wherein the bottom of the support frame is detachably connected with a multifunctional folding stool which can be turned over to be used as a foot pad when the students rest and can be used as a stool after being detached, and the desk is detachably connected with the multifunctional folding stool which can be used as the foot pad and the stool, so that the students can conveniently rest or carry the folding stool, the position of the desk bucket can be adjusted, and the practicability is improved. The utility model also discloses a seat which can be matched with the desk for use, and the seat can adjust the positions of the seat board and the backrest, so that the seat is convenient for students to rest, and when the seat is matched with the desk for use, the seat is convenient for students to put feet when resting, and the comfort is improved.

Description

Desk and chair for students

[ field of technology ]

The utility model relates to a desk and a seat for students.

[ background Art ]

In order to improve the comfort level of students in classrooms for rest, various deformable desk and chairs are currently on the market, however, after deformation, the desk and chair in the prior art does not have proper positions for putting feet when the students lie down, thereby reducing the comfort feeling when the students rest, or the foot pad in the prior art has single function and occupies space, and meanwhile, the chair matched with the desk is inconvenient to move and difficult to carry in some special occasions; in addition, when the student turns over by adjusting the seat, the desk bucket of the back-row student can obstruct the adjustment of the seat of the student to a certain extent, and the situation that the desk bucket collides with the head when the student gets up can also occur, so that great inconvenience is brought.

For example, chinese patent grant bulletin number: CN108041832B, the authorized bulletin day is 5 months 5 days in 2020, discloses a foldable integrated student desk and chair, comprising a folding desk base frame and a folding chair base frame, wherein a row of screw holes I and screw holes II are respectively arranged on the sliding connection edges of the folding desk base frame and the folding chair base frame, the folding desk base frame and the folding chair base frame support a desk body and a chair body respectively through a double-link mechanism and a single-link mechanism, a row of screw holes III are arranged on a connection long plate on the lower surface of the desk body, a row of screw holes IV are arranged on a connection short plate on the lower surface of the chair body, and two ends of a link are respectively connected with corresponding screw holes through screws; the desk body is provided with a drawer, and the chair body is provided with a chair back connected with the adjusting plate and the adjusting plate sleeve. The defects are that: when students are in a sport meeting or in a playground meeting, the folding chair is very inconvenient to carry, and meanwhile, the bottoms of the desks are free from feet when the students have afternoon nap, so that the comfort is reduced.

Accordingly, the present utility model has been made to solve the above-mentioned problems occurring in the prior art.

[ utility model ]

The utility model aims to overcome the defects of the prior art, and provides a desk for students, which is detachably connected with a multifunctional folding stool capable of being used as foot pads and a stool, and can also adjust the position of a desk bucket, thereby improving the practicability; in addition, the utility model also provides a seat, which can adjust the positions of the seat board and the backrest, is convenient for students to rest, can be matched with a desk for use, is convenient for students to put feet when resting, and increases the comfort.

The utility model is realized by the following technical scheme:

the utility model provides a desk for student uses, includes desk fill 1 and is used for supporting the support frame 2 of desk fill 1, support frame 2 bottom detachably is connected with can overturn so that the student uses the callus on the sole when having a rest and can use the multi-functional folding bench 3 of bench after tearing down.

The folding stool 3 comprises a stool plate 31 and rotating supporting feet 32 which can be rotationally connected to the back surface of the stool plate 31, the two rotating supporting feet 32 on the same side of the stool plate 31 are arranged in a staggered mode, the outer splayed shape which is larger than 90 degrees is formed between the rotating supporting feet 32 and the stool plate 31 after the rotating supporting feet 32 are unfolded, and a locking assembly 34 which can be used for connecting the folding stool 3 to the support frame 2 is arranged between the folding stool 3 and the support frame 2.

The folding stool 3 further comprises a fixing seat 33 which is arranged on the back of the stool plate 31 and can be connected with the support frame 2, and limiting pieces 35 which can be matched with the rotating support legs 32 to limit the rotating range of the rotating support legs 32 so as to facilitate the unfolding or folding of the rotating support legs 32 are arranged at two ends of the fixing seat 33 and are positioned on the inner side of the fixing seat.

The limiting piece 35 comprises a limiting piece body 351 fixedly connected to the fixing seat 33, a limiting pin 352 is arranged on the limiting piece body 351, and a guide groove 321 which can be used for the limiting pin 352 to penetrate out and limit the rotation range of the rotating supporting leg 32 is arranged at one end of the rotating supporting leg 32.

The locking assembly 34 comprises a connecting plate 341 connected to the support frame 2 and a cross rod 342 capable of penetrating through the connecting plate 341 and the folding stool 3, through holes for the cross rod 342 to penetrate are formed in the connecting plate 341, the fixing seat 33 and the rotating support leg 32, and spring pin posts 343 capable of penetrating through the cross rod 342 and preventing the folding stool 3 from being separated from the support frame 2 are connected to two ends of the cross rod 342.

The desk is fought 1 and is equipped with the slip subassembly 4 that can supply the desk to fight 1 horizontal slip between the support frame 2, slip subassembly 4 is including fixed connection on the desk is fought 1 and the connecting seat 41 that the bottom is connected with the top of support frame 2, be formed with first spout 411 on the connecting seat 41, thereby slip subassembly 4 still includes the slider 42 that can make the desk fight 1 horizontal slip relative to support frame 2 with the cooperation of first spout 411 on the support frame 2, still be equipped with limiting plate 43 on the connecting seat 41, all be equipped with the locking hole on limiting plate 43 and the slider 42, thereby be connected with on the slider 42 can with the locking hole cooperation make the desk fight 1 keep the operating piece 44 of locking.

The utility model provides a seat for use with above-mentioned desk is supporting, including bedplate 5 and rather than articulated back 6, the seat still includes the seat support frame 7 that is used for supporting the two, be equipped with between bedplate 5 and the seat support frame 7 and enable bedplate 5 relative seat support frame 7 to move forward's bedplate slip subassembly 8, the both sides of seat support frame 7 are equipped with two armrests 71, be equipped with between armrests 71 rear end and the back 6 and make the back 6 relative armrest 71 inclined back slip subassembly 9 when bedplate 5 moves forward.

The seat board sliding assembly 8 comprises a guide rail 81 fixedly connected to the seat support frame 7, a second sliding groove 811 is formed in the guide rail 81, a sliding rail 82 is slidably connected to the second sliding groove 811, seat board supporting legs 83 for supporting the sliding rear seat board 5 are fixedly connected to the sliding rail 82, and the top of the seat board supporting legs 83 are connected with the bottom of the seat board 5.

The seat board sliding assembly 8 further comprises an adjusting rod 84 arranged on the seat board supporting leg 83, limiting protruding blocks 841 capable of penetrating out of the seat board supporting leg 83 are arranged at two ends of the adjusting rod 84, a limiting seat 85 capable of being matched with the limiting protruding blocks 841 to prevent the sliding rail 82 from sliding relative to the guide rail 81 is fixedly connected to the bottom of the guide rail 81, a notch 851 which is convenient for the limiting protruding blocks 841 to penetrate through to enable the seat board 5 to horizontally move is formed in the limiting seat 85, and a handle 842 capable of enabling the handle to rotate is further arranged on the adjusting rod 84.

The backrest sliding assembly 9 comprises a backrest rod 91 arranged at the back of the backrest 6, a third sliding groove 911 is formed on the backrest rod 91, a connecting rod 72 is arranged between the two armrests 71, and a pulley 92 which can be matched with the third sliding groove 911 to enable the backrest 6 to slide along with the seat board 5 is fixedly connected to the connecting rod 72.

Compared with the prior art, the utility model has the following advantages:

1. according to the folding stool disclosed by the utility model, the folding stool is detachably connected with the desk support frame, and when a student needs to lie down for afternoon nap or needs foot pads, the folding stool can be turned over to be placed under the feet of the student, so that the student can conveniently put the feet for rest; meanwhile, when a student is in a sport meeting or a meeting needs to use a seat in a playground, the folding stool is convenient to detach from the support frame due to the fact that the student seat is heavy and large in size, the folding stool is simple in structure and convenient to detach, students can conveniently carry, the folding stool can be used as a foot pad and can be used as a stool at the same time, redundant space cannot be occupied when the folding stool is connected with the support frame, a hand-operated lifter can be installed on the support frame, operation is safe and convenient, the folding stool can adapt to students of different sizes, and practicality of the folding stool is greatly improved.

2. The utility model also provides a seat which can be matched with the desk for use, the seat board is adjusted to move forwards through the seat board sliding component, meanwhile, the seat board is hinged with the backrest and adopts a hinge structure, when the seat board moves forwards, the backrest slides downwards by leaning against the backrest sliding component relative to the armrests, at the moment, the seat can be adjusted to a proper resting angle, and in order to adapt to the resting angle of students, the reclining angle of the backrest relative to the seat board is 160 DEG at the maximum, and meanwhile, the backrest can be prevented from tipping backwards; meanwhile, the seat can be matched with the desk for use, so that students can conveniently put feet on the folding stool during noon break, and the comfort is improved; in addition, the hand-operated lifter can be installed on the seat support frame, so that the operation is safe and convenient, students with different body types can be adapted, and the practicability of the chair is greatly improved.

[ description of the drawings ]

FIG. 1 is one of the front views of the present utility model;

FIG. 2 is a second front view of the present utility model;

FIG. 3 is one of the perspective views of the present utility model;

FIG. 4 is a second perspective view of the present utility model;

FIG. 5 is an exploded view of the locking assembly of the present utility model;

FIG. 6 is an exploded view of the folding stool of the present utility model;

FIG. 7 is an exploded view of the slide assembly of the present utility model;

FIG. 8 is a cross-sectional view of a slide assembly of the present utility model;

FIG. 9 is one of the front views of the seat of the present utility model;

FIG. 10 is a second front view of the seat of the present utility model;

FIG. 11 is one of the perspective views of the seat of the present utility model;

FIG. 12 is a second perspective view of the chair of the present utility model.

[ detailed description ] of the utility model

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 4, a desk for students comprises a desk bucket 1 and a support frame 2 for supporting the desk bucket 1, wherein the bottom of the support frame 2 is detachably connected with a multifunctional folding stool 3 which can be turned over to be used as a foot pad when the students rest and can be used as a stool after being detached. According to the folding stool 3 provided by the utility model, the desk support frame 2 is detachably connected, and when students need to lie down for afternoon nap or need foot pads, the folding stool 3 can be turned over to be placed under the feet of the students, so that the students can rest by putting the feet conveniently; meanwhile, when a student is in a sports session or a seat is required to be used in a playground meeting, the folding stool 3 can be detached from the support frame 2 at the moment due to the fact that the student seat is heavy and large in size and inconvenient to carry, the folding stool is simple in structure and convenient to detach and carry for students, the folding stool 3 can be used as a foot pad and also can be used as a stool at the same time, redundant space can not be occupied when the folding stool is connected with the support frame 2, a hand-operated lifter can be installed on the support frame 2, operation is safe and convenient, the folding stool can be suitable for students of different sizes, and practicality of the folding stool is greatly improved.

As shown in fig. 5-6, the folding stool 3 includes a stool plate 31 and rotating support legs 32 rotatably connected to the back of the stool plate 31, two rotating support legs 32 on the same side of the stool plate 31 are staggered, the unfolded rotating support legs 32 and the stool plate 31 are in an out-splayed shape with an angle larger than 90 degrees, and a locking assembly 34 capable of connecting the folding stool 3 to the support frame 2 is arranged between the folding stool 3 and the support frame 2. When the folding stool 3 is used as a foot pad, the student can place the feet on the stool plate 31; when the folding stool 3 needs to be disassembled and unfolded, the rotary supporting leg 32 is rotated outwards, so that an outward splayed structure with an obtuse angle is formed between the rotary supporting leg 32 and the stool plate 31, the folding stool 3 is more stable, and the effect is best when the angle is 95 degrees; meanwhile, the rotating supporting feet 32 on the same side of the stool plate 31 are arranged in a staggered manner, so that collision can not occur when the rotating supporting feet 32 are unfolded; the locking component 34 is arranged between the support frame 2 and the folding stool 3, so that the folding stool 3 is conveniently connected to the support frame 2, occupied space is reduced, and the folding stool 3 can be conveniently turned over to serve as a foot pad.

As shown in fig. 6, the folding stool 3 further includes a fixing seat 33 disposed at the back of the stool plate 31 and capable of being connected with the support frame 2, and a limiting member 35 capable of being matched with the rotating support leg 32 to limit the rotation range of the rotating support leg 32 so as to facilitate the unfolding or folding of the rotating support leg 32 is disposed at both ends of the fixing seat 33 and at the inner side thereof. The folding stool 3 is connected to the support frame 2 through the connection of the fixing seat 33 and the support frame 2, the limiting piece 35 is connected to one end of the fixing seat 33 and sleeved in the rotating support leg 32, and the limiting piece 35 ensures the rotating angle of the rotating support leg 32, so that students can use the folding stool 3 to be more stable when using the stool.

As shown in fig. 6, the limiting member 35 includes a limiting member body 351 fixedly connected to the fixing base 33, a limiting pin 352 is disposed on the limiting member body 351, and a guiding slot 321 is disposed at one end of the rotating supporting leg 32, through which the limiting pin 352 can pass out, so as to limit the rotation range of the rotating supporting leg 32. The limiting member 35 comprises a circular tubular limiting member body 351, a limiting pin 352 is arranged on the limiting member body 351, the rotating supporting leg 32 is provided with a guide groove 321, and the limiting pin 352 penetrates out of the guide groove 321 and can move along the guide groove 321, so that the rotating supporting leg 32 can be unfolded or folded.

As shown in fig. 5-6, the locking assembly 34 comprises a connecting plate 341 connected to the support frame 2 and a cross bar 342 capable of passing through the connecting plate 341 and the folding stool 3, through holes for the cross bar 342 to pass through are formed in the connecting plate 341, the fixing seat 33 and the rotating support leg 32, and spring pins 343 capable of passing through the cross bar 342 and preventing the folding stool 3 from being separated from the support frame 2 are connected to two ends of the cross bar 342. When the folding stool 3 needs to be detached from the support frame 2, the spring pin 343 on the cross rod 342 is taken down, then the cross rod is pulled out from the through holes on the connecting plate 341, the fixing seat 33 and the rotating support legs 32, and at the moment, the folding stool 3 can be detached, so that the folding stool is simple in structure, convenient to operate and convenient for users to use.

As shown in fig. 7-8, a sliding component 4 capable of horizontally sliding the desk bucket 1 is arranged between the desk bucket 1 and the support frame 2, the sliding component 4 comprises a connecting seat 41 fixedly connected to the desk bucket 1 and the bottom of which is connected with the top end of the support frame 2, a first sliding groove 411 is formed on the connecting seat 41, the sliding component 4 further comprises a sliding piece 42 fixedly connected to the support frame 2 and capable of being matched with the first sliding groove 411 so as to enable the desk bucket 1 to horizontally slide relative to the support frame 2, a limiting plate 43 is further arranged on the connecting seat 41, locking holes are formed in the limiting plate 43 and the sliding piece 42, and an operating piece 44 capable of being matched with the locking holes so as to enable the desk bucket 1 to keep locked is connected to the sliding piece 42. In order to facilitate backward overturning of the front-row student seat, a sliding assembly 4 which can facilitate backward movement of the desk bucket 1 is arranged between the desk bucket 1 and the support frame 2, when students need to adjust the desk bucket 1 backward, the operating piece 44 is adjusted to be separated from a locking hole on the limiting plate 43, at the moment, the connecting seat 41 on the desk bucket 1 moves horizontally under the cooperation of the first sliding groove 411 and the sliding piece 42, at the moment, the desk bucket 1 can be moved to a proper position, the structure is simple, the operation is convenient, meanwhile, in order to facilitate the operation piece 44 and the limiting plate 43 in a clamping manner, an inclined section is arranged at one end of the limiting plate 43, and in order to facilitate the connection of the operating piece 44 and the limiting plate 43, the operating piece 44 preferably adopts a spring pin.

As shown in fig. 9-12, a seat can be used in combination with the desk, and comprises a seat board 5 and a backrest 6 hinged with the seat board 5, the seat also comprises a seat support frame 7 for supporting the seat board 5 and the seat support frame 7, a seat board sliding component 8 capable of enabling the seat board 5 to move forward relative to the seat support frame 7 is arranged between the seat board 5 and the seat support frame 7, two armrests 71 are arranged on two sides of the seat support frame 7, and a backrest sliding component 9 capable of enabling the backrest 6 to incline relative to the armrests 71 when the seat board 5 moves forward is arranged between the rear ends of the armrests 71 and the backrest 6. The utility model also provides a seat which can be matched with the desk for use, the seat board 5 is adjusted to move forwards through the seat board sliding component 8, meanwhile, the seat board 5 is hinged with the backrest 6, and a hinge structure is adopted, when the seat board 5 moves forwards, the backrest 6 slides downwards by leaning against the armrest 71 by virtue of the backrest sliding component 9, at the moment, the seat can be adjusted to a proper resting angle, and in order to adapt to the resting angle of students, the lying angle of the backrest 6 relative to the seat board 5 is 160 degrees at the maximum, and the back tipping can be prevented; meanwhile, the seat can be matched with the desk for use, so that students can conveniently put feet on the folding stool 3 during noon break, and the comfort is improved; in addition, the hand-operated lifter can be installed on the seat support frame 7, so that the operation is safe and convenient, students with different body types can be adapted, and the practicability of the chair is greatly improved.

As shown in fig. 10 and 12, the seat board sliding assembly 8 includes a guide rail 81 fixedly connected to the seat support frame 7, a second sliding groove 811 is formed on the guide rail 81, a sliding rail 82 is slidably connected to the second sliding groove 811, a seat board supporting leg 83 for supporting the sliding rear seat board 5 is fixedly connected to the sliding rail 82, and the top of the seat board supporting leg 83 is connected to the bottom of the seat board 5. Through the cooperation of second spout 811 and slide rail 82 on the guide rail 81, can drive bedplate supporting leg 83 and bedplate 5 and remove forward, simple structure convenient operation, bedplate supporting leg 83 increase auxiliary stability simultaneously, opens when noon break and play the supporting role.

As shown in fig. 12, the seat board sliding assembly 8 further includes an adjusting rod 84 disposed on the seat board supporting leg 83, two ends of the adjusting rod 84 are respectively provided with a limit protrusion 841 capable of penetrating out of the seat board supporting leg 83, a limit seat 85 capable of being matched with the limit protrusions 841 to prevent the sliding rail 82 from sliding relative to the guide rail 81 is fixedly connected to the bottom of the guide rail 81, a notch 851 is formed on the limit seat 85 to facilitate the limit protrusions 841 to penetrate and enable the seat board 5 to horizontally move, and a handle 842 capable of enabling the handle to rotate is further disposed on the adjusting rod 84. When the seat board sliding component 8 needs to be unlocked, the upward-shifting adjusting rod 84 is shifted, the limiting protruding blocks 841 at the two ends of the upward-shifting adjusting rod can rotate along with the upward-shifting adjusting rod, when the limiting protruding blocks 841 rotate to be flush with the notches 851 on the limiting seat 85, the seat board supporting legs 83 can be pulled outwards, at the moment, the limiting protruding blocks 841 can slide through the notches 851, at the moment, the sliding rail 82 can slide relative to the guide rail 81, students can adjust the seat board 5-level backrest 6 to a proper position, and the structure is simple and convenient for the students to operate.

As shown in fig. 11, the backrest sliding assembly 9 includes a backrest rod 91 disposed at the back of the backrest 6, a third sliding groove 911 is formed on the backrest rod 91, a connecting rod 72 is disposed between the two armrests 71, and a pulley 92 capable of matching with the third sliding groove 911 to enable the backrest 6 to slide along with the seat plate 5 is fixedly connected to the connecting rod 72. The backrest rod 91 is arranged at the back of the backrest 6, the connecting rod 72 is arranged between the armrests 71, and the backrest 6 is connected with the connecting rod 72 by matching the pulley 92 arranged on the connecting rod 72 with the third sliding groove 911 arranged on the backrest rod 91, so that the backrest 6 is smoother in sliding, and the service lives of the backrest 6 and the connecting rod 72 are prolonged.

As shown in fig. 11-12, a storage box can be arranged below the seat board 5, so that students can conveniently place articles.

Claims (10)

1. A desk for students, characterized by: the multifunctional folding stool comprises a desk bucket (1) and a supporting frame (2) for supporting the desk bucket (1), wherein the bottom of the supporting frame (2) is detachably connected with a multifunctional folding stool (3) which can be turned over so as to be used as a foot pad when a student has a rest and can be used as a stool after being disassembled.

2. A desk for use with a student as claimed in claim 1, wherein: folding bench (3) include bench board (31) and can rotate and connect in rotation supporting legs (32) at bench board (31) back, two rotation supporting legs (32) of bench board (31) same side are crisscross to be set up, just be the outer eight style of calligraphy that is greater than 90 between rotation supporting legs (32) and bench board (31) after expanding, be equipped with between folding bench (3) and support frame (2) and be connected locking subassembly (34) on support frame (2) with folding bench (3).

3. A desk for use with a student as claimed in claim 1, wherein: the folding stool (3) further comprises a fixing seat (33) which is arranged on the back of the stool plate (31) and can be connected with the support frame (2), and limiting pieces (35) which can be matched with the rotating support legs (32) to limit the rotating range of the rotating support legs (32) so as to facilitate the unfolding or folding of the rotating support legs (32) are arranged at two ends of the fixing seat (33) and are positioned on the inner side of the fixing seat.

4. A desk for use with a student according to claim 3, wherein: the limiting piece (35) comprises a limiting piece body (351) fixedly connected to the fixing seat (33), a limiting pin (352) is arranged on the limiting piece body (351), and a guide groove (321) which can be used for the limiting pin (352) to penetrate out and limit the rotation range of the rotating supporting foot (32) is formed in one end of the rotating supporting foot (32).

5. A desk for use with a student as claimed in claim 2, wherein: the locking assembly (34) comprises a connecting plate (341) connected to the support frame (2) and a cross rod (342) capable of penetrating through the connecting plate (341) and the folding stool (3), through holes for the cross rod (342) to penetrate are formed in the connecting plate (341), the fixing seat (33) and the rotating support legs (32), and spring pin columns (343) capable of penetrating through the cross rod (342) and preventing the folding stool (3) from being separated from the support frame (2) are connected to two ends of the cross rod (342).

6. A desk for use with a student as claimed in claim 1, wherein: the desk is fought (1) and is equipped with between support frame (2) and can supply desk to fight (1) horizontal slip's slip subassembly (4), slip subassembly (4) are including connecting seat (41) that fixed connection is fought (1) on the desk and bottom is connected with the top of support frame (2), be formed with first spout (411) on connecting seat (41), thereby slip subassembly (4) still include fixed connection can with first spout (411) cooperation make desk fight (1) relative support frame (2) horizontal slip's slider (42) on support frame (2), still be equipped with limiting plate (43) on connecting seat (41), all be equipped with the locking hole on limiting plate (43) and slider (42), thereby be connected with on slider (42) and can with locking hole cooperation make desk fight (1) keep operating piece (44) of locking.

7. A seat, characterized in that: the desk is used in combination with any one of claims 1 to 6, and comprises a seat board (5) and a backrest (6) hinged with the seat board, the seat also comprises a seat support frame (7) used for supporting the seat board (5) and the seat support frame (7), a seat board sliding component (8) capable of enabling the seat board (5) to move forwards relative to the seat support frame (7) is arranged between the seat board (5) and the seat support frame (7), two armrests (71) are arranged on two sides of the seat support frame (7), and a backrest sliding component (9) capable of enabling the backrest (6) to incline relative to the armrests (71) when the seat board (5) moves forwards is arranged between the rear ends of the armrests (71) and the backrest (6).

8. The seat according to claim 7, wherein: the seat board sliding assembly (8) comprises a guide rail (81) fixedly connected to the seat support frame (7), a second sliding groove (811) is formed in the guide rail (81), a sliding rail (82) is connected in the second sliding groove (811) in a sliding mode, seat board supporting legs (83) used for supporting the sliding rear seat board (5) are fixedly connected to the sliding rail (82), and the tops of the seat board supporting legs (83) are connected with the bottoms of the seat boards (5).

9. The seat according to claim 8, wherein: the seat board sliding assembly (8) further comprises an adjusting rod (84) arranged on the seat board supporting leg (83), limiting protruding blocks (841) capable of penetrating out of the seat board supporting leg (83) are arranged at two ends of the adjusting rod (84), the bottom of the guide rail (81) is fixedly connected with a limiting seat (85) which can be matched with the limiting protruding blocks (841) to prevent the sliding rail (82) from sliding relative to the guide rail (81), a notch (851) which is convenient for the limiting protruding blocks (841) to penetrate through to enable the seat board (5) to horizontally move is formed in the limiting seat (85), and a handle (842) which can enable the sliding seat board to rotate is further arranged on the adjusting rod (84).

10. The seat according to claim 7, wherein: the backrest sliding assembly (9) comprises a backrest rod (91) arranged at the back of the backrest (6), a third sliding groove (911) is formed in the backrest rod (91), a connecting rod (72) is arranged between the two armrests (71), and a pulley (92) which can be matched with the third sliding groove (911) to enable the backrest (6) to slide along with the seat board (5) is fixedly connected to the connecting rod (72).

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