CN217743553U - Student chair - Google Patents

Abstract

The utility model discloses a student tablet chair, including the bedplate, still include: the backup plate is rotationally connected with the seat plate; the adjusting mechanism is used for adjusting the included angle between the backup plate and the seat plate; the leg supporting plate is movably connected with the tablet chair; the leg supporting plate and the seat plate are movably connected through the guide assembly, and the guide assembly is used for guiding the leg supporting plate to move and be accommodated below the seat plate. Compared with the prior art, when the student needs to have a rest, only need pass through adjustment mechanism with the backup plate and adjust to the tilt state to derive the leg layer board from the bedplate below, the student places the leg on the leg layer board can lean on to the backup plate to have a lunch break, quick and convenient adjusts student's tablet chair for "deck chair", thereby has promoted the noon break travelling comfort that the student can.

Description

student chair

technical field

The utility model relates to the field of teaching aids, in particular to a class chair for students.

Background technique

Desks are one of the necessary tools for schools and other educational institutions. With the continuous change of education models, desks and chairs need to have more and more practical functions to meet the needs of students. At this stage, most primary and middle school students At noon, I can only sleep on the desk. Although I can get a little low-quality rest, if things go on like this, the students will suffer from backaches and backaches, which will affect their study status in the afternoon. of good health. Based on the current situation, it is necessary to propose a novel student chair for students.

Utility model content

The utility model proposes a class chair for students, aiming at solving the technical problem that the class chair for middle school students in the prior art cannot provide students with a good rest experience.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is as follows: a class chair for students, including a seat board, also includes: a backing board, the backing board is rotatably connected with the seat board; an adjustment mechanism, the adjustment The mechanism is used to adjust the angle between the back plate and the seat plate; the leg support plate is movably connected with the chair; the guide assembly is movably connected with the leg support plate and the seat plate through the guide assembly , the guide assembly is used to guide the movement of the leg support and be stored under the seat.

Further, the adjustment mechanism includes: a first gear body, the first gear body is arranged on the rotation path of the backing board, and is used to abut against the backing board; a locking member, the locking member is movable ground between the backing board and the first gear body, the locking member moves to the rotation path of the backing board to abut against the backing board, and the locking member moves to the rotation of the backing board out of the path to disengage from the backing plate.

Further, the locking member includes: a pair of upper connecting plates, the upper connecting plates include a first mounting portion, a second mounting portion and a resisting portion, the first mounting portion is hinged to the seat plate, the The abutting portion abuts against the backing plate; the joystick is connected between the two upper connecting plates, and the end of the upper connecting plate away from the joystick is against the seat plate The abutment end, the distance between the abutment end and the first installation part is greater than the distance between the first installation part and the base; the elastic return part, the elastic return part is connected to the second installation part Between the seat plate and the seat plate, the first installation part is arranged at an end away from the operating rod, and the second installation part is arranged between the first installation part and the abutment part.

Further, the support plate includes a rotating shaft and an abutting head, the rotating shaft is horizontal, and the abutting head is arranged below the rotating shaft, the abutting head is used to abut the abutting portion and the first gear body; the seat plate includes a support frame, and the support frame is provided with a second gear body and the first gear body, the second gear body is used to abut against the abutting head, and the first gear body A body and a second gear body are respectively arranged on two sides of the abutting head, and the abutment head swings between the first gear body and the second gear body.

Further, the guide assembly includes a guide piece, the guide piece is a pair of guide rails, the leg support is provided with a slide piece, the slide piece is arranged on the guide rail, and the two ends of the guide rail are provided with stoppers. block, the limiting block can abut against the sliding member, and the sliding member slides between the two limiting blocks.

Further, the limiting block is provided with a slot, and the leg support is provided with lugs, the lugs are set in the slot, and the slots are parallel to the two ends of the length direction of the guide rail There are bayonets through which the lugs slide.

Further, the slider and the lugs are respectively arranged correspondingly at both ends of the leg support in the sliding direction, and one guide rail is provided on opposite sides of the leg support, and the leg support The plate is rotatably connected with the sliding part, and the sliding parts located on both sides of the leg support board are arranged coaxially.

Further, the chair also includes a supporting leg, the supporting leg includes a supporting base and an adjusting rod, the supporting base is provided with a sleeve, the adjusting rod is connected with the seat board, and the adjusting rod is telescopically set in the sleeve.

Further, the student chair also includes a headrest and a telescopic rod, the telescopic rod is connected between the backboard and the headrest, and the telescopic rod is used to adjust the distance between the backboard and the headrest. distance between.

Further, the student chair also includes a storage bag detachably installed on the back of the backboard, the storage bag has an inner cavity, the top of the inner cavity has an opening, and the top of the inner cavity is provided with a flip cover.

Beneficial effect: compared with the prior art, when students need to rest, they only need to adjust the backboard to the inclined state through the adjustment mechanism, and lead out the leg support board from the bottom of the seat board, and the students put their legs on the leg support board You can lean against the board for a lunch break, and quickly and conveniently adjust the student's chair to a "recliner chair", thereby improving the comfort of the student's lunch break.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the middle class chair of the present invention.

Fig. 2 is a structural schematic view of the seat plate in the first embodiment of the leaning plate adjustment mechanism.

Fig. 3 is a structural schematic diagram of the support frame in the first embodiment of the leaning plate adjustment mechanism.

Fig. 4 is a structural schematic diagram of the locking member in the first embodiment of the leaning plate adjustment mechanism.

Fig. 5 is a schematic diagram of the connection structure between the locking member and the seat plate in the first embodiment of the leaning plate adjustment mechanism.

Fig. 6 is a structural schematic view of the back side of the back board in the first embodiment of the back board adjustment mechanism.

Fig. 7 is a schematic diagram of the structure of the class chair in the class mode of the present invention.

Fig. 8 is a structural schematic diagram of the teaching chair in the lunch break mode of the present invention.

Fig. 9 is a structural schematic diagram of the second embodiment of the leaning plate adjustment mechanism in the class mode.

Fig. 10 is a structural schematic diagram of the second embodiment of the leaning plate adjustment mechanism in the lunch break mode.

Fig. 11 is a schematic diagram of the exploded structure of the second embodiment of the leaning plate adjustment mechanism.

Fig. 12 is a schematic diagram of the installation structure of the leaning plate on the head supporting plate.

Fig. 13 is a schematic diagram of the telescopic structure of the head support.

Fig. 14 is a schematic diagram of the three-dimensional structure of the middle leg support of the present invention.

Fig. 15 is a schematic structural view of the utility model in the storage state of the middle leg support.

Fig. 16 is a schematic view of the side structure of the middle leg support of the present invention.

Fig. 17 is a schematic diagram of the exploded structure of the middle leg support of the present invention.

Fig. 18 is a schematic diagram of the installation structure of the limit block and the guide in the utility model.

Wherein, the finger in accompanying drawing 7 and accompanying drawing 8 is only the direction of applying force when the leaning plate is rotated and adjusted, and does not belong to a part of the leaning plate adjustment mechanism.

Wherein, the main reference signs in this application include:

1. Seat plate; 11. Board body; 12. Support frame; 13. Connecting plate; 14. First gear body; 15. Second gear body; 16. Rotating shaft; 17. Lower connecting plate; 2. Backing plate; 21 , butt joint; 22, reinforcing rod; 24, splint; 25, handle hole; 3, locking piece; 31, elastic return piece; 32, connecting rod; 321, first installation part; 322, second installation part; 323 , abutting end; 324, upper connecting plate; 33, joystick; 35, resisting part; 4, guide assembly; 41, guide piece; 42, chute; 43, baffle plate; 44, through hole; 5, sliding 6, limit block; 61, chuck; 62, hook groove; 63, card groove; 7, bracket; 71, support rod; 72, fixed code; 73, positioning part; 8, bolt; 9, leg support Plate; 91, lug; 10, storage bag; 101, flip cover; 1011, folding edge; 18, supporting leg; 181, supporting seat; 182, adjusting rod; 23, head support plate; 26, telescopic rod; 261, positioning Hole; 27, damping sleeve; 28, positioning glass beads; 29, hook.

Detailed ways

The utility model provides a class chair for students. As shown in Figure 1, the class chair in this application includes a seat board 1, a back board 2, a leg support board 9 and a head support board 23, wherein the seat board 1 is placed horizontally, and The board 2 is set on one side of the seat board 1 and the seat board 1 and the back board 2 are connected in rotation, the angle between the back board 2 and the seat board 1 is adjusted by the adjustment mechanism, and the leg support board 9 is stored on the seat board through the guide assembly 4 1, when students need to take a lunch break, they only need to tilt the backboard 2 and export the leg support 9, and the student can recline on the chair, and the leg support 9 will support the student's calf, thereby Make students have a good lunch break experience.

Further, the adjustment mechanism includes a first gear body and a locking member, wherein the seat plate 1 is placed horizontally, and the back plate 2 is arranged on one side of the seat plate 1, and the seat plate 1 and the back plate 2 are rotatably connected, and by turning the back plate 2 To change the angle between the seat plate 1 and the back plate 2, the seat plate 1 is provided with a first gear body 14, when the back plate 2 rotates to the first gear body 14, the back plate 2 and the seat plate 1 The angle between them is adjusted to the maximum, and students can lean on the backboard 2 to rest, while the locking part 3 is arranged on the rotation path of the backboard 2, and the locking part 3 is arranged on the backboard 2 and the first gear body 14 On the rotation path of the leaning plate 2 between them, the locking part 3 is provided with an abutting part 35. When the locking part 3 abuts against the leaning plate 2, the abutting part 35 provides support for the leaning plate 2, so that the leaning The angle of inclination between the board 2 and the seat board 1 is the smallest, and the leaning board 2 is placed nearly vertically. Students lean against the leaning board 2 to maintain a good sitting posture, and the locking member 3 is movable. When the locking member 3 When moving to the rotation path of the leaning plate 2, the locking piece 3 can support the leaning plate 2, thereby restricting the leaning plate 2 to a nearly vertical state. When the locking piece 3 is moved outside the active radius of the leaning plate 2 , the leaning plate 2 is out of contact with the locking member 3, and the leaning plate 2 can continue to be tilted down.

Further, referring to the first embodiment of the leaning plate adjustment mechanism shown in accompanying drawings 2 to 8, the seat plate 1 mainly includes a plate body 11 and a support frame 12, wherein the support frame 12 is a hollow direction frame structure, and the plate The body 11 is installed on the upper end of the support frame 12, wherein the side of the seat plate 1 connected to the back plate 2 is the rear side, the opposite side of the seat plate 1 and the back plate 2 is the front side, and the other two sides of the seat plate 1 are the left side. , the right side; the left and right sides of the leaning plate 2 are provided with a shaft hole, the top of the support frame 12 is provided with a connection plate 13, and the connecting plate 13 is correspondingly arranged at the shaft holes on the left and right sides of the leaning plate 2. A rotating shaft 16 is arranged in the connection plate 13 and the shaft hole, and the rotating shaft 16 makes the connection between the back plate 2 and the seat plate 1; the support frame 12 is also provided with a first gear body 14 and a second gear body 15. The first gear body 14 and the second gear body 15 are both arranged as rods with a rectangular cross section, the first gear body 14 and the second gear body 15 are arranged parallel to each other, and the second gear body 15 is arranged behind the support frame 12 side, the first gear body 14 is arranged at the position of the second gear body 15 close to the front side; and two abutment heads 21 are arranged at the bottom of the backing plate 2, the abutment head 21 extends downward and passes through the support frame 12, and the abutment head 21 is arranged below the rotating shaft 16, and the abutment head 21 is located between the first gear body 14 and the second gear body 15, so that the abutment head 21 can only be between the first gear body 14 and the second gear body 15 when rotating. This limits the range of the angle of inclination of the leaning plate 2. The first gear body 14 is arranged on the front side of the abutment head 21. When the abutment head 21 abuts against the first gear body 14, the leaning plate 2 and The angle between the seat boards 1 is 150°, which is convenient for students to lie on the back board 2 for a lunch break. ° angle, at this time, the backing plate 2 cannot continue to rotate towards the seat plate 1, and the angle between the seat plate 1 and the support of the backing plate 2 reaches the minimum. The direction rotation of a gear body 14 prevents the inclination angle of the backboard 2 from becoming large, thereby fixing the backboard 2 at a position of 100° (nearly vertical).

Further, an elastic reset member 31 is also provided between the locking member 3 and the seat plate 1, and the elastic reset member 31 pulls the locking member 3 to move toward the seat plate 1, that is, pulls the locking member 3 toward the rotation path of the abutment joint 21 upward movement, so that the locking member 3 can provide stable abutment against the abutment joint 21, and place the backing plate 2 to rotate freely.

Further, the locking member 3 in the present application is composed of two connecting rods 32 and an operating rod 33, the two connecting rods 32 are arranged opposite and parallel, and the two ends of the operating rod 33 are connected to the two connecting rods 32 respectively. connection, the ends of the two connecting rods 32 in the same direction are connected and fixed with the joystick 33, thereby forming a U-shaped structure; There is an upper connecting plate 324, the upper connecting plate 324 is provided with a first mounting portion 321 and a second mounting portion 322, a corresponding lower connecting plate 17 is provided below the seat plate 1, and the first mounting portion 321 is seated with the lower connecting plate 17. The plate 1 is hinged, the second installation part 322 is used to connect the elastic reset member 31, and the first installation part 321 is close to the end far away from the joystick 33, the resisting part 35 is arranged on the end of the connecting rod 32 close to the joystick 33, the second installation The part 322 is provided between the first mounting part 321 and the abutting part 35, so that when the joystick 33 is pressed down, the first mounting part 321 provides a fulcrum function, and the abutting part 35 rotates in a direction away from the seat plate 1 , cancel the abutment effect of the abutment joint 21, the abutment joint 21 can rotate towards the direction of the first gear body 14, and when the force on the joystick 33 disappears, the elastic reset member 31 can drive the locking member 3 to return, and the abutment part 35 will continue to fall on the rotation path of the abutment joint 21, and the side of the abutment portion 35 facing the first gear body 14 is set as an inclined transition section, so that the abutment portion 35 forms a hill whose size decreases from bottom to top In this way, you only need to manually swing the backing plate 2, and the abutment head 21 of the backing board 2 will push up the abutment portion 35 until the abutment head 21 and the abutment portion 35 break away from the abutment at the high point. At this time, the abutment portion 35 Automatic return, and the slopes on both sides of the abutment portion 35 have a large difference, the abutment portion 35 has a small slope toward the first gear body 14, and the abutment portion 35 has a slope toward the second gear body 15 side Larger, when the inclination angle of the leaning plate 2 is adjusted from large to small, the abutment head 21 is convenient to move against the abutting portion 35 synchronously, so that the leaning plate 2 can be adjusted to a nearly vertical state, and when the leaning angle of the leaning plate 2 When adjusting from small to large, the abutment portion 35 is difficult to be pushed away synchronously by the abutment head 21 to ensure the stability of the backing plate 2 when it is close to the vertical state.

Preferably, the length of the connecting rod 32 can be appropriately lengthened, so that the connecting rod 32 can extend to the outside of the horizontal direction of the seat board 1, so that the joystick 33 is also correspondingly arranged on the outside of the downward mapping range of the seat board 1, so that students can directly Depressing the joystick 33 does not require the hand to go under the seat plate 1 to perform corresponding operations, which improves the convenience of operation of the locking member 3 .

Further, the distance between the abutting end 323 of the connecting rod 32 and the first mounting portion 321 is greater than the distance between the first mounting portion 321 and the base, so that when the joystick 33 is pressed down, the abutting end of the connecting rod 32 323 will rotate upwards around the first installation part 321, and the abutting end 323 can be offset against the underside of the seat plate 1. At this time, the joystick 33 will not continue to be pressed down, so that the traction force received by the elastic reset member 31 will not be affected. It will become larger without limit, thereby providing a good protection effect for the elastic reset member 31, avoiding the situation that the elastic reset member 31 is prone to failure, and improving the service life of the classroom chair.

Preferably, the elastic return member 31 in the present application can also be a spring, and the spring is only required to be connected to the first gear body 14 .

Further, referring to the accompanying drawing 6, the backing plate 2 in the present application is also provided with a reinforcing rod 22, the reinforcing bar 22 is square, and a card slot is provided on the back side of the backing board 2, and the card slot is elongated. The card slot is arranged from top to bottom, the reinforcing rod 22 is fixed in the card slot, and the reinforcing rod 22 is detachably installed in the card slot through bolts in the later stage, and the lower end of the reinforcing rod 22 extends to the bottom of the backing plate 2, abutting against the joint 21 That is, the reinforcing rod 22 extends out of the extension end of the outer side of the backing plate 2. On the one hand, the reinforcing bar 22 can strengthen the structural strength of the backing plate 2; The strength of the abutting head 21 can also be made higher, and the service life of the abutting head 21 is longer. In order to better cover the reinforcing bar 22, two pairs of splints 24 are correspondingly arranged on the lower end of the backing plate 2, and the splints 24 are connected to the two groove walls of the slot, and each pair of splints 24 corresponds to a reinforcement The rod 22 and the reinforcing rod 22 are clamped by two splints 24. Under the action of the splint 24, it is possible to well prevent the metal material from abutting against the first gear body 14 and the second gear body 15 or against There is a lot of noise when I am on Department 35, which affects the students' lunch break.

Furthermore, a handle hole 25 is also provided on the top of the backing board 2 , which is convenient for adjusting the inclination state of the backing board 2 through the handle.

Preferably, the elastic return member 31 is a spring; in the above-mentioned embodiment, the spring is arranged on the side of the first installation part 321 close to the operating rod 33, and at this time, the spring provides the function of pulling the locking member 3 to move toward the seat plate 1 In other embodiments, a spring can also be provided on the side of the first mounting portion 321 close to the abutting end 323 , and at this time, the spring provides the force to move the locking member 3 away from the seat plate 1 .

Referring to shown in accompanying drawing 7,8, the operating principle of the present application is:

In the class mode, the abutting head 21 is abutted against the second gear body 15 and the abutting portion 35, and the backing plate 2 is limited to a position close to the vertical position, and the rotating shaft 16 of the backing plate 2, the second gear body 15 and the abutting portion 35 three points make backing plate 2 and seat plate 1 be fixed into a stable 100 degree slightly inclined state, sit down and work as backrest usefulness for the student.

When changing from the class mode to the lunch break mode: the student gently presses the joystick 33 downwards, and at the same time gently pushes the backing plate 2, the joystick 33 rotates downward with the first mounting part 321, and the abutment part 35 leaves the position of the abutment head 21 at this moment. On the rotation path, cancel the resisting effect of the abutting joint 21, and the backing plate 2 rotates backward until the abutting joint 21 abuts against the first gear body 14. In the midday body mode, students can lie on it for a lunch break.

When changing from the midday body mode to the class mode: the student gently presses the joystick 33 downwards (you can also not press down), lifts the backboard 2 lightly, and the abutment part 35 avoids the rotation of the abutment joint 21 until the abutment joint 21 of the backboard 2 touches When connected to the second gear body 15, the elastic return member 31 pulls the locking member 3 back, and the abutting portion 35 abuts against the abutment joint 21 at the same time, and the rotating shaft 16 of the leaning plate 2, the second gear body 15 and the abutment Holding part 35 three points make leaning plate 2 and seat plate 1 be fixed into a stable 100 degree slightly inclined state, sit down and use as backrest for the student.

Referring to accompanying drawings 9 to 11, in the second embodiment of the leaning plate adjustment mechanism, the support frame 12 is a hollow direction frame structure (also an integral part of the support legs), and the plate body 11 is installed on the support frame 12 The upper end of the upper end of the seat plate 1, where the side of the seat plate 1 connected to the back plate 2 is the rear side, the side opposite the seat plate 1 and the back plate 2 is the front side, and the other two sides of the seat plate 1 are the left and right sides; The left and right sides of 2 are provided with a shaft hole, and the top of the support frame 12 is provided with a connection plate 13, which is correspondingly arranged at the shaft holes on the left and right sides of the backing plate 2, in the connection plate 13 and the shaft hole A rotating shaft 16 is set, and the back plate 2 and the seat plate 1 are rotationally connected through the rotating shaft 16; a first gear body 14 and a second gear body 15 are also provided on the support frame 12, and the first gear body 14 in the present embodiment and the second gear body 15 are integrated on the connection plate, the second gear body 15 is arranged on the rear side of the support frame 12, the first gear body 14 is arranged at the position of the second gear body 15 close to the front side; 2. There are two reinforcing rods 22. The reinforcing rods 22 are hollow bent pipes. There is a card slot on the back of the back plate 2. The reinforcing rods 22 are fixed in the card slots. In the groove, and the lower end part of the reinforcement rod 22 extends to the bottom of the backing plate 2, the abutment joint 21 is a metal sheet metal part arranged at the extension end of the reinforcement rod 22, and the reinforcement rod 22 can strengthen the structural strength of the backing board 2 on the one hand. , on the other hand, compared with the way that the abutment head 21 is directly integrated with the backing plate 2, the strength of the abutment head 21 can also be made higher, and the service life of the abutment head 21 is longer. The abutment head 21 is located in the first gear body 14 and the second gear body 15, so that the abutment head 21 can only rotate between the first gear body 14 and the second gear body 15 when rotating, which limits the range of the inclination angle of the leaning plate 2, The first gear body 14 is arranged on the front side of the abutment head 21. When the abutment head 21 abuts against the first gear body 14, an angle of 150° is formed between the back board 2 and the seat board 1, so that it is convenient for students to recline. Take a lunch break on the leaning plate 2, when the abutting head 21 abuts against the second gear body 15, the angle between the leaning plate 2 and the seat plate 1 is 100°, at this moment, the leaning plate 2 cannot continue to rotate toward the seat plate 1, The included angle between the seat plate 1 and the support of the support plate 2 reaches the minimum, and at the same time, the locking member 3 abuts against the abutment joint 21 to prevent the support plate 2 from rotating towards the first gear body 14, that is, to prevent the support plate 2 from becoming larger in inclination angle , thereby the backing plate 2 is fixed on the position of 100 ° (nearly vertical).

Further, the locking member 3 in the second embodiment is composed of two upper connecting plates 324 and a joystick 33, the two connecting rods 32 are opposite and arranged in parallel, and the two ends of the joystick 33 are connected to the two ends of the joystick 32 respectively. The two upper connection plates 324 are connected; the upper connection plate 324 is provided with a first installation part 321 and a second installation part 322, the first installation part 321 is hinged with the connection plate 13, and the second installation part 322 is used to connect the elastic reset member 31 , and the first installation part 321 is close to the end far away from the joystick 33, and the second installation part 322 is arranged between the first installation part 321 and the abutment part 35, so that it can ensure that when the joystick 33 is pressed down, the first installation part 321 provides a fulcrum function, and the abutting portion 35 rotates away from the seat plate 1, canceling the abutment effect of the abutment joint 21, and the abutment joint 21 can rotate toward the first gear body 14, and when the force on the joystick 33 disappears Finally, the elastic reset member 31 can drive the locking member 3 to return, and the abutting portion 35 continues to be positioned on the rotation path of the abutting joint 21 .

The end of the upper connecting plate 324 close to the second mounting part 322 is the abutting end 323 which abuts against the seat plate 1, and the distance between the abutting end 323 and the first mounting part 321 is greater than the distance between the first mounting part 321 and the base , so that when the joystick 33 is pressed down, the abutment end 323 can be offset against the underside of the seat plate 1, and the joystick 33 will not continue to be pressed down at this time, so that the traction force received by the elastic return member 31 will not Unlimited enlargement can provide a good protection effect for the elastic reset member 31, avoid the situation that the elastic reset member 31 is prone to failure, and improve the service life of the classroom chair.

Further, the class chair among the present application also comprises support leg 18, and support leg 18 comprises support base 181 and adjustment rod 182, and support base 181 is provided with sleeve, and the top opening of sleeve, adjustment rod 182 from the top of sleeve Penetrate into the inside of the sleeve, and the adjustment rod 182 is connected to the bottom of the seat plate. The adjustment rod 182 is evenly provided with several threaded holes in its height direction, and a set screw is arranged opposite to the outside of the sleeve. Adjust the adjustment rod 182 To the appropriate height, use the positioning screw to position the adjustment rod, so that the chair can be adjusted to the appropriate height.

Further, as shown in Figures 12 and 13, the student chair also includes a head support plate 23 and a telescopic rod 26, and an opening is provided at the upper end of the backing board, the telescopic rod 26 is a rod, and the reinforcing rod 22 has an upper port, The reinforcing rod 22 is a hollow pipe, and the upper section of the reinforcing rod 22 is a straight section, the telescopic rod 26 can penetrate through the upper port of the reinforcing rod 22, and a damping sleeve 27 is also provided between the reinforcing rod 22 and the telescopic rod 26 , The damping sleeve 27 is arranged between the telescopic rod 26 and the reinforcing rod 22, and the damping sleeve 27 is fixed inside the reinforcing rod 22 to allow the telescopic rod 26 to slide up and down along the reinforcing rod 22 and maintain the relative position after sliding by the damping force.

Further, one end of the damping sleeve 27 is assembled on the lower end of the telescopic rod 26, and the other end protrudes outward to form an abutting flange 271, which can be pressed against the upper port of the reinforcing rod 22; that is, the telescopic The rod 26 is pressed against the inner wall surface of the reinforcing rod 22 through the damping sleeve 27 and can form frictional damping, and a positioning glass bead 28 is also provided on the abutting flange 271, and the ball part of the positioning glass bead 28 protrudes from the damping sleeve 27 inside, the positioning glass beads 28 are in close contact with the telescopic rods 26, and several positioning holes 261 are evenly arranged in the length direction of the telescopic rods 26. When the telescopic rods 26 stretch out to a certain length, the positioning glass beads 28 are embedded in them. In a positioning hole 261, the head support plate 23 is fixed in a certain position, that is, when the telescopic rod 26 is adjusting the telescopic length, the telescopic rod 26 is pulled to make it break away from the original positioning hole 261, and after being adjusted to the required length, the positioning The glass beads 28 are clamped to the corresponding positioning holes 261 so that the telescopic rod 26 is locked on the reinforcing rod 22 again. That is to say, the telescopic rod can be adjusted step by step according to the different positioning holes 261 on the reinforcing rod 22, so that the telescopic rod can adjust its telescopic length arbitrarily within a certain length range. By sliding the telescopic rod to a suitable distance, And the telescopic rod 26 and the head support plate 23 are fixed so as to adjust the interval between the head support plate and the telescopic rod, which can be applicable to individual students of different heights.

And in order to prevent the telescopic rod 26 from breaking away from the reinforcing rod 22, the application is also provided with a positioning pin 262 at the end of the telescopic rod 26, and is provided with a locking groove 272 on the damping sleeve 27, and the locking groove 272 is set opposite to the positioning pin 262 , when the telescopic rod 26 is stretched out to the limit position, the positioning pin 262 slides into the card slot 272 and abuts against the damping sleeve 27 , thereby preventing the telescopic rod 26 from detaching from the reinforcing rod 22 .

Preferably, a hook 29 is also provided on the back of the backboard 2 for hanging student supplies.

Further, as shown in accompanying drawings 14 to 18, the guide assembly 4 includes a guide 41, the guide 41 is fixed on the chair, and the leg rest 9 is flexibly connected to the guide 41, thereby ensuring that the leg rest 9 Carry out activities on the guide 41, wherein the guide 41 is mainly used to guide the leg support 9 to the directly below the seat plate 1 for storage, and when students are in class, they can push the leg support 9 without using the leg support 9 Move on the guide piece 41 to move the leg support plate 9 to the bottom of the seat plate 1 .

Specifically, the guides 41 in this embodiment are a pair of horizontally arranged guide rails, the guides are fixed on the first gear body 14 and the guide rails are arranged directly below the seat plate 1, the guide rails and the seat are directly fixed, and the guide rails are provided with The chute 42 is provided with a baffle plate 43 at the notch of the chute 42, and the baffle plate 43 is arranged on both sides of the notch of the chute 42 in the length direction; A sliding piece 5, the sliding piece 5 is arranged in the middle of the chute 42, so that the sliding piece 5 can slide in the chute 42, and then drives the leg support plate 9 to slide along the guide rail, and the baffle plate 43 can limit the sliding piece 5 In the chute 42 , the sliding member 5 is prevented from detaching from the slide rail from the notch, thereby ensuring the stable sliding of the slide rail in the chute 42 . In order to ensure that the slider 5 does not break away from the chute 42 in the length direction of the chute 42, a limit block 6 is respectively arranged at the two end positions of the chute 42 of the guide rail, and the limit block 6 blocks the sliding of the slider 5 path, so that the slider 5 can only slide between the two limiting blocks 6, and the stable sliding of the leg support plate 9 on the guide rail can be realized through the limiting blocks 6 and the baffle plate 43. In other embodiments, the guide piece 41 can also be set as a slide bar, the slide piece 5 is sleeved on the slide bar to slide, and the limit block 6 is directly set and fixed on the two ends of the slide bar to limit the slide piece 5 on the slider.

Specifically, in the present application, the two ends of the chute 42 run through, the limit block 6 enters the chute 42 from the end of the chute 42, and a chuck 61 is arranged on the limit block 6, when the limit block 6 is loaded into the slide When inside the groove 42, the chuck 61 is stuck on the outside of the chute 42, and the middle part of the limit block 6 is correspondingly provided with a hook groove 62, and the outside of the guide rail is provided with a corresponding through hole 44. When installing, the hook groove 62 Corresponding to the through hole 44, the bolt 8 is used to penetrate through the through hole 44 and the hook groove 62 sequentially from the outside of the guide rail, so that the limit block 6 is fixed inside the slide groove 42, so that the limit block 6 can be fixed on the guide rail, neither It will come out and will not slide accordingly. This fixing method is simple and easy to operate, which greatly saves assembly efficiency.

Further, a support 7 is provided below the leg support 9, and the support 7 is detachably installed below the leg support 9, and the leg support 9 is connected with the slider 5 through the support 7; wherein, the support 7 is arranged as a set The bent rod, the bent shape of the bracket 7 is U-shaped, the bracket 7 includes two parallel support rods 71, the bracket 7 and the leg support 9 are fixed by a fixed code 72, and the back of the leg support 9 A bracket 7 fixing groove (not shown in the figure) is designed, the bracket 7 is placed in the fixing groove of the bracket 7, and then the fixing code 72 is pressed on the side of the bracket 7 relative to the leg support plate 9, and then the fixing code 72 and the leg Bolts 8 are used for fastening between the supporting plates 9. Of course, in other embodiments, the fixing code 72 and the leg supporting plate 9 can also be fixed by clamping; There is a guide rail, and each support rod 71 corresponds to a guide rail. The support rod 71 is arranged on the inner side of the two guide rails. The support rod 71 is directly connected with the slider 5, and the support rod 71 is connected to the slider 5 in rotation, and is located on the leg. The sliding parts 5 on both sides of the supporting plate 9 remain coaxial, and the axis of the two sliding parts 5 is the axis of rotation of the leg supporting plate 9, and the leg supporting plate 9 can rotate with the two sliding parts 5 as the axis. By making the leg support 9 rotate, the inclination angle of the leg support 9 is adjusted, so that the leg support 9 can be adjusted to a more comfortable position to support the lower leg.

The application further proposes the positioning structure of the leg support 9, the positioning structure includes a positioning portion 73, the positioning portion 73 is arranged at the end position of the support rod 71 of the bracket 7, when the leg support 9 is horizontal to the seat plate 1 , there is no contact between the positioning part 73 and the seat plate 1, and the leg support plate 9 can slide horizontally on the guide rail. The position between them remains fixed, and the rotation range of the leg support plate 9 is limited by the abutment of the positioning part 73 against the seat plate 1, and the positioning part 73 is fixed at an optimal inclined position.

Further, a card slot 63 is also provided on the limit block 6, and the card slot 63 is arranged on the limit block 6, and the card slot 63 is a through groove, and the two ends of the card slot 63 parallel to the length direction of the guide rail are provided with a bayonet , so that the slot 63 penetrates the two ends of the stop block 6 in the length direction of the guide rail, and a lug 91 is provided on the leg support 9, and the lug 91 is arranged on the side of the leg support 9 relative to the guide rail. Both sides of the leg support 9 are respectively provided with a lug 91. When the leg support 9 needs to be accommodated, the leg support 9 is pushed to slide horizontally on the guide rail, and the lug 91 is horizontally aligned with the leg support 9 on the guide rail. Slide, when the lug 91 slides into the slot 63, stop pushing the leg support 9, now the lug 91 is stuck in the slot 63, the leg support 9 can be horizontally placed under the seat plate 1, thereby Leg support plate 9 is accommodated.

Further, in a more preferred embodiment, the lug 91 and the sliding piece 5 are respectively arranged on the side of the leg rest 9, and the lug 91 and the sliding piece 5 are located in the front and rear directions of the leg rest 9 , so that a support effect can be exerted on the positions of the leg rest 9 near the four corners, thereby supporting the leg rest 9 evenly.

Further, the front of the leg support plate 9 is shaped according to the ergonomically designed curved surface, and the leg support plate 9 is provided with grooves that fit the lower legs of the human body, and many evenly distributed air holes are designed in the middle of these grooves, so that the leg support plate 9 Both sides of the surface are slightly raised, so that the student's legs can be comfortably attached to the leg support 9, and anti-skid lines are designed on the surface of the leg support 9 to prevent the student's legs from sliding down.

Preferably, the sliding member 5 in the present application is a roller, which can effectively reduce sliding resistance, reduce noise, and improve user experience and service life.

In the class mode, the abutting head 21 is abutted against the second gear body 15 and the abutting portion 35, and the backing plate 2 is limited to a position close to the vertical position, and the rotating shaft 16 of the backing plate 2, the second gear body 15 and the abutting portion 35 three points make backing plate 2 and seat plate 1 be fixed into a stable 100 degree slightly inclined state, for the student to sit down and use as backrest; Leg support plate 3 is pushed into the below of seat plate 1, and leg support plate 3 is placed horizontally.

When changing from the class mode to the lunch break mode: the student gently presses the joystick 33 downwards, and at the same time gently pushes the backing plate 2, the joystick 33 rotates downward with the first mounting part 321, and the abutment part 35 leaves the position of the abutment head 21 at this moment. On the rotation path, cancel the resisting effect of the abutting joint 21, and the backing plate 2 rotates backward until the abutting joint 21 is in contact with the first gear body 14. Pull out the leg support 3 from the guide rail until the slider 5 is opposed to the front stopper 6, the leg support 3 no longer slides. Plate 3 rotates under the action of gravity until the positioning part 73 is opposed to seat plate 1 and no longer rotates. Students place their legs on the leg support plate 3 and then lean against the plate 2 for a morning rest.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A class chair for students, comprising a seat plate, is characterized in that it also includes: a backing board, the backing board is rotatably connected with the seat board; an adjustment mechanism, the adjustment mechanism is used to adjust the angle between the backing board and the seat board; a leg support, the leg support is movably connected with the chair; A guide assembly, through which the leg support board and the seat board are movably connected, the guide assembly is used to guide the leg support board to move and be stored under the seat board. 2. The student chair according to claim 1, wherein the adjustment mechanism comprises: A first gear body, the first gear body is arranged on the rotation path of the backing board and is used to abut against the backing board; Locking piece, the locking piece (3) is movably arranged between the backing plate (2) and the first gear body (14), the locking piece (3) moves to the backing plate ( 2) On the rotation path to abut against the backing plate (2), the locking member (3) moves out of the rotation path of the backing plate (2) to disengage from the abutting against the backing plate (2). 3. The student chair according to claim 2, wherein the locking member comprises: A pair of upper connecting plates, the upper connecting plate includes a first mounting portion, a second mounting portion and abutting portion, the first mounting portion is hinged to the seat plate, and the abutting portion is abutted against the backing plate catch; An operating rod, the operating rod is connected between the two upper connecting plates, the end of the upper connecting plate away from the operating rod is an abutting end against the seat plate, and the abutting end is connected to the The distance between the first installation part is greater than the distance between the first installation part and the base; An elastic reset member, the elastic reset member is connected between the second installation part and the seat plate, the first installation part is arranged at an end away from the operating rod, and the second installation part is arranged at the end Between the first installation part and the abutting part. 4. The student chair according to claim 3, wherein the backing plate includes a rotating shaft and an abutting head, the rotating shaft is horizontal, and the abutting head is arranged below the rotating shaft, and the abutting head is used for for abutting against the abutting portion and the first gear body; The seat plate includes a support frame, and the support frame is provided with a second gear body and the first gear body, the second gear body is used to abut against the abutting head, the first gear body and the first gear body The second gear body is respectively arranged on both sides of the abutment head, and the abutment head swings between the first gear body and the second gear body. 5. The student chair according to claim 1, wherein the guide assembly includes a guide, the guide is a pair of guide rails, the leg support is provided with a slide, and the slide is located on On the guide rail, limit blocks are provided at both ends of the guide rail, the limit blocks can abut against the slider, and the slider slides between the two limit blocks. 6. The student chair according to claim 5, wherein the limit block is provided with a slot, the leg support is provided with a lug, and the lug is arranged in the slot, and Two ends of the card slot parallel to the length direction of the guide rail are provided with bayonets through which the lugs slide. 7. The student chair according to claim 6, characterized in that, the sliding member and the lug are respectively arranged on the two ends of the leg support plate in the sliding direction correspondingly, and the opposite ends of the leg support plate One guide rail is provided on each side, the leg support is rotatably connected to the sliding member, and the sliding members located on both sides of the leg support are arranged coaxially. 8. The student chair according to claim 1, wherein the chair also includes a support leg, the support leg includes a support seat and an adjustment rod, the support seat is provided with a sleeve, and the adjustment rod Connected with the seat board, the adjusting rod is telescopically arranged in the sleeve. 9. The student chair according to claim 1, wherein the student chair further comprises a head support and a telescopic rod, and the telescopic rod is connected between the back board and the head support, and the The telescopic rod is used to adjust the distance between the back board and the head support board. 10. The class chair for students according to claim 1, characterized in that, the class chair for students also includes a storage bag detachably mounted on the back of the backboard, the storage bag has an inner cavity, and the top of the inner cavity is It has an opening, and the top of the inner cavity is provided with a flip cover.

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