CN221129328U - Height-adjustable study chair - Google Patents

Abstract

The utility model relates to the technical field of furniture manufacturing and discloses a learning chair with adjustable height, which comprises a seat plate, wherein bilateral symmetry fixed blocks are fixedly connected to two sides of the outer side wall of the seat plate, a movable block is rotatably connected to the outer side of the fixed block, a backrest is fixedly connected to the top of the movable block, a rotary groove is arranged at the center of the bottom of the backrest, a worm is rotatably connected to the inside of the rotary groove, a connecting rod is fixedly connected between the fixed blocks in bilateral symmetry, a worm wheel is fixedly connected to the center of the outer wall of the connecting rod, one side of the outer side wall of the worm is in meshed connection with one side of the worm wheel, and one end of the worm is provided with an auxiliary assembly. In the utility model, when the backrest is adjusted, the worm can be screwed by the handle, and the worm rotates on the worm wheel to cause the worm to rotate around the worm wheel, so that the angle of the backrest is adjusted, the problem that the backrest cannot be adjusted is solved, and the effect of adapting to the sitting posture of children during learning is achieved.

Description

Height-adjustable study chair

Technical Field

The utility model relates to the technical field of furniture manufacturing, in particular to a learning chair with adjustable height.

Background

The desk and chair are arranged in school class or family, and are learning partners for children, so that a safe, firm, practical and comfortable chair is very important.

The search is carried out on the bulletin number: CN209474141U discloses a learning chair, which comprises a backrest, a seat and a plurality of chair legs, wherein the backrest is detachably arranged on the top surface of the seat, and each chair leg is detachably arranged on the bottom surface of the seat; the lower end of the backrest is provided with two first plug tenons, the top surface of the chair seat is provided with two first plug grooves matched with the first plug tenons, and the first plug tenons are in plug fit with the first plug grooves; the top of each chair leg all is equipped with the second spliced tenon, and the bottom surface of seat support is equipped with a plurality of second spliced grooves with second spliced tenon assorted, is equipped with at least one first protruding muscle on the lateral surface of second spliced tenon, is equipped with at least one second protruding muscle on the medial surface of second spliced groove, and second spliced tenon and second spliced groove grafting cooperation, the medial surface in first protruding muscle and second spliced groove in close contact, lateral surface in second protruding muscle and second spliced tenon in close contact. The chair for learning can be assembled and disassembled by children automatically and repeatedly, is simple and safe, occupies small space after being disassembled, is convenient to store and carry, has no flexible adjusting mechanism, cannot realize the adjustment of the backrest, and is unfavorable for the study of children.

Disclosure of utility model

In order to overcome the defects, the utility model provides a learning chair with adjustable height, which aims to solve the problem that the chair backrest cannot be adjusted by the learning chair, and the learning chair is unfavorable for children to learn and has good sitting posture.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a study chair with adjustable height, includes the bedplate, the equal fixedly connected with bilateral symmetry fixed block of bedplate lateral wall both sides, the fixed block outside rotates and is connected with the movable block, movable block top fixedly connected with back, back bottom center is provided with the rotary groove, the inside rotation of rotary groove is connected with the worm, bilateral symmetry fixedly connected with connecting rod between the fixed block, connecting rod outer wall center fixedly connected with worm wheel, worm lateral wall one side meshing is connected in worm wheel one side, worm one end is provided with auxiliary assembly.

Through the technical scheme, the worm can be screwed by the handle and rotates on the worm wheel, so that the worm rotates around the worm wheel, the angle of the backrest is adjusted, and the backrest can be effectively adjusted.

Further, the auxiliary assembly comprises handrails and handles, and the handrails are fixedly connected to two sides of the top of the seat board.

Through the technical scheme, the handrails can effectively increase the comfort of the seat.

Further, the handle is fixedly connected to one end of the worm.

Through the technical scheme, the control of the worm is facilitated by the handle.

Further, the connecting block is fixedly connected to the bottom of the seat board, and the screw rod is fixedly connected to the bottom of the connecting block.

Through above-mentioned technical scheme, can connect the lead screw in the bedplate bottom by the connecting block.

Further, the screw outer wall threaded connection has gear one, screw outer wall sliding connection has the bracing piece, bracing piece bottom fixedly connected with base.

Through above-mentioned technical scheme, can drive the rotation of lead screw by gear one, the bracing piece is convenient for adapt to the motion change of lead screw, and the base can increase the stability of seat.

Further, the top of the supporting rod is fixedly connected with a main board, the gear is rotationally connected to the top of the main board, and the screw rod is slidingly connected to the inside of the main board.

Through above-mentioned technical scheme, the control of the lift of mainboard being convenient for.

Further, the center of the top of the main board is rotationally connected with a large gear, and the first gear is meshed with the large gear.

Through the technical scheme, the large gear can control the first gears simultaneously.

Further, one side of the top of the main board is rotationally connected with a gear II, the gear II is meshed with the large gear, and the bottom of the gear II is fixedly connected with a rotary rod.

Through the technical scheme, the rotary rod is convenient for driving the second gear, so that the second gear drives the large gear.

The utility model has the following beneficial effects:

1. according to the utility model, firstly, when the backrest is adjusted, the worm can be screwed by the handle, and the worm rotates on the worm wheel, so that the worm rotates around the worm wheel, the angle of the backrest is adjusted, the problem that the backrest cannot be adjusted is solved, and the effect of adapting to the sitting posture of a child in learning is achieved.

2. In the utility model, when the height of the seat is adjusted, the second gear can be driven by the rotary rod, and then the second gear drives the large gear to rotate, so that the first gear is driven to rotate, the screw rod is enabled to ascend or descend, the problem that the height of the seat cannot be adjusted is solved, and the effect of adjusting the height of the seat according to needs is achieved.

Drawings

FIG. 1 is a schematic diagram of a height-adjustable chair according to the present utility model;

FIG. 2 is a schematic view of a backrest of a learning chair with adjustable height according to the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

fig. 4 is a schematic view of a base structure of a learning chair with adjustable height according to the present utility model.

Legend description:

1. A seat plate; 2. a base; 3. an armrest; 4. a backrest; 5. a movable block; 6. a fixed block; 7. a handle; 8. a connecting rod; 9. a worm wheel; 10. a rotary groove; 11. a worm; 12. a connecting block; 13. a screw rod; 14. a first gear; 15. a large gear; 16. a second gear; 17. a rotating rod; 18. a support rod; 19. and a main board.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the utility model provides a study chair with adjustable height, including bedplate 1, the equal fixedly connected with bilateral symmetry fixed block 6 of bedplate 1 lateral wall both sides, fixed block 6 outside rotates and is connected with movable block 5, 5 top fixedly connected with back 4 of movable block, back 4 bottom center is provided with rotary groove 10, the inside rotation of rotary groove 10 is connected with worm 11, fixedly connected with connecting rod 8 between bilateral symmetry fixed block 6, connecting rod 8 outer wall center fixedly connected with worm wheel 9, worm 11 lateral wall one side meshing is connected in worm wheel 9 one side, worm 11 one end is provided with auxiliary assembly, auxiliary assembly includes handrail 3 and handle 7, handrail 3 fixedly connected in bedplate 1 top both sides, handle 7 fixed connection is in worm 11 one end.

Specifically, the seat board 1 adopts arc design, can increase the travelling comfort of use, the back 4 adopts the arc design at laminating back equally, convenient to use's dependence, the design of handrail 3 can be convenient for user's hand place, the practicality of seat has been increased, seat board 1 and back 4 are connected with fixed block 6 through movable block 5, the rotation of back 4 of being convenient for, also be convenient for confirm the orbit of back 4, the movement of worm 11 is convenient for in the design of rotary groove 10, the motion to worm 11 has been avoided, connecting rod 8 that sets up between the fixed block 6, the settling of worm wheel 9 of being convenient for, also the operation of worm 11 of being convenient for, worm 11 and worm wheel 9 meshing, fix worm wheel 9 simultaneously, then can make worm 11 remove, again because the restriction of back 4, worm 11 can rotate round worm wheel 9, in order to control the angle of back 4 and seat board 1.

Referring to fig. 4, a connecting block 12 is fixedly connected to the bottom of a seat board 1, a screw rod 13 is fixedly connected to the bottom of the connecting block 12, a gear one 14 is connected to the outer wall of the screw rod 13 in a threaded manner, a supporting rod 18 is slidably connected to the outer wall of the screw rod 13, a base 2 is fixedly connected to the bottom of the supporting rod 18, a main plate 19 is fixedly connected to the top of the supporting rod 18, the gear one 14 is rotatably connected to the top of the main plate 19, the screw rod 13 is slidably connected to the inside of the main plate 19, a large gear 15 is rotatably connected to the center of the top of the main plate 19, the gear one 14 is meshed with the large gear 15, a gear two 16 is rotatably connected to one side of the top of the main plate 19, the gear two 16 is meshed with the large gear 15, and a rotary rod 17 is fixedly connected to the bottom of the gear two 16.

Specifically, connect bedplate 1 and lead screw 13 by connecting block 12, can increase the area of force, make the seat more firm, and base 2 is through increasing the area of force equally, make the seat put more firm, because lead screw 13 restriction is in the inside slip of bracing piece 18, when gear one 14 takes place to rotate, can make lead screw 13 go up and down, by three lead screw 13 support simultaneously, the stability of mechanism of being convenient for, and gear wheel 15's design is convenient for drive three gear one 14 simultaneously rotates, and rotary rod 17 can drive gear two 16 rotations, thereby control gear wheel 15's rotation, realize the regulation of lift.

Working principle: when the seat backrest 4 is adjusted, the handle 7 rotates, so that the worm 11 is driven to rotate, the worm 11 rotates in the rotating groove 10, the worm 11 is meshed with the worm wheel 9, the worm wheel 9 is fixed, the worm 11 moves circumferentially around the worm wheel 9, the backrest 4 is connected to the fixed block 6 through the movable block 5, the backrest 4 is driven by the worm 11 to rotate on the fixed block 6, the angle of the backrest 4 is adjusted, when the height of the seat plate 1 is adjusted, the base 2 and the supporting rod 18 support the main plate 19, the rotating rod 17 drives the gear two 16 to rotate through screwing the rotating rod 17, the gear two 16 drives the large gear 15 to rotate, the large gear 15 drives the surrounding gear one 14 to synchronously rotate, and the screw rod 13 stretches and contracts through the rotation of the gear one 14, so that the seat plate 1 is adjusted.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. A learning chair with adjustable height, comprising a seat plate (1), characterized in that: the utility model discloses a seat board, including seat board (1), fixed block (6), movable block (5), back (4) are fixed on the outside rotation of fixed block (6), back (4) bottom center is provided with rotary groove (10), rotary groove (10) inside rotation is connected with worm (11), bilateral symmetry fixedly connected with connecting rod (8) between fixed block (6), connecting rod (8) outer wall center fixedly connected with worm wheel (9), worm (11) outer wall one side meshing is connected in worm wheel (9) one side, worm (11) one end is provided with auxiliary assembly.

2. A height adjustable learning chair as claimed in claim 1 wherein: the auxiliary assembly comprises an armrest (3) and a handle (7), and the armrest (3) is fixedly connected to two sides of the top of the seat board (1).

3. A height adjustable learning chair as claimed in claim 2 wherein: the handle (7) is fixedly connected to one end of the worm (11).

4. A height adjustable learning chair as claimed in claim 1 wherein: the bottom of the seat board (1) is fixedly connected with a connecting block (12), and the bottom of the connecting block (12) is fixedly connected with a screw rod (13).

5. A height adjustable learning chair as claimed in claim 4 wherein: the screw rod (13) outer wall threaded connection has gear one (14), screw rod (13) outer wall sliding connection has bracing piece (18), bracing piece (18) bottom fixedly connected with base (2).

6. A height adjustable learning chair as claimed in claim 5 wherein: the top of the supporting rod (18) is fixedly connected with a main board (19), the first gear (14) is rotationally connected to the top of the main board (19), and the screw rod (13) is slidingly connected to the inside of the main board (19).

7. A height adjustable learning chair as claimed in claim 6 wherein: the center of the top of the main board (19) is rotationally connected with a large gear (15), and the first gear (14) is meshed with the large gear (15).

8. A height adjustable learning chair as claimed in claim 7 wherein: the rotary type electric motor is characterized in that a gear II (16) is rotatably connected to one side of the top of the main board (19), the gear II (16) is meshed with the large gear (15), and a rotary rod (17) is fixedly connected to the bottom of the gear II (16).