Learning chair convenient for noon break

Abstract

The utility model discloses a study chair convenient for noon break, which comprises a base, the base comprises two supporting legs, the tops of the two supporting legs are fixedly connected with limiting frames, lifting rods are slidably connected in the limiting frames, the lifting rods and the outer walls of the limiting frames are jointly provided with locking bolts, the tops of the lifting rods are fixedly connected with sliding rails, and the sliding rails are fixedly connected with the sliding rails. Two fixing frames are fixedly connected between the two sliding rails jointly, a first double-shaft motor is fixedly connected between the two fixing frames jointly, two driving shafts of the first double-shaft motor are both fixedly connected with lead screws, the outer portions of the lead screws are in threaded connection with limiting pipes, and the two sides of each limiting pipe are both fixedly connected with limiting rods. The first double-shaft motor, the second double-shaft motor, the sliding seat, the sliding rail and the limiting pipe are matched with one another, so that the seat can move forwards on the base when the back of the seat is put down, the gravity center of the seat can move forwards, and when a user lies down for noon break, the seat is higher in stability and not prone to turning backwards and toppling over.

Description

TECHNICAL FIELD

[0001] The utility model relates to learning chair technical field, concretely is a learning chair convenient for noon break. BACKGROUND

[0002] Noon break is very important for promoting the brain development, skeleton growth, vision protection, physical and mental health and improving the learning ability and efficiency of primary and secondary school students.

[0003] In order to facilitate the noon break, a large number of learning chairs capable of adjusting the angle of the backrest are provided in the prior art, and since the backrest of the chair is laid down, when a person leans back, the center of gravity will move backward, and there is a safety hazard of overturning.

[0004] Therefore, we propose to design a learning chair convenient for noon break. CONTENT OF THE UTILITY MODEL

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0007] A learning chair convenient for noon break, comprising:

[0008] A base comprising two legs, the top of each leg is fixedly connected with a limiting frame, a lifting rod is slidably connected inside the limiting frame, the lifting rod and the outer wall of the limiting frame are provided with a locking pin, the top of the lifting rod is fixedly connected with a sliding rail, two fixed frames are fixedly connected between the two sliding rails, a first double-shaft motor is fixedly connected between the two fixed frames, the two drive shafts of the first double-shaft motor are fixedly connected with lead screws, the lead screws are externally threaded with a limiting tube, the limiting tube is fixedly connected with a limiting rod on both sides, and a sliding seat is arranged inside the sliding rail.

[0009] A seat comprising a seat cushion fixedly connected with the top of the sliding seat, a second double-shaft motor is fixedly connected inside one end of the seat cushion, the two drive shafts of the second double-shaft motor are respectively penetrated through the seat cushion and fixedly connected with a connecting frame, and a backrest is fixedly connected on the top of the two connecting frames.

[0010] As a preferred scheme of the learning chair convenient for noon break, the outer wall of the limiting frame is provided with a lock hole corresponding to the locking bolt, the locking bolt penetrates through the lock hole and is threadedly connected with the lifting rod, the height of the lifting rod is adjusted by inserting the locking bolt into the lock hole of different height, and then the height of the seat is adjusted.

[0011] As a preferred scheme of the learning chair convenient for noon break, the outer wall of the limiting frame is provided with a lock hole corresponding to the locking bolt, the locking bolt penetrates through the lock hole and is threadedly connected with the lifting rod, the height of the lifting rod is adjusted by inserting the locking bolt into the lock hole of different height, and then the height of the seat is adjusted.

[0012] As a preferred scheme of the learning chair convenient for noon break, the outer wall of the limiting frame is provided with a lock hole corresponding to the locking bolt, the locking bolt penetrates through the lock hole and is threadedly connected with the lifting rod, the height of the lifting rod is adjusted by inserting the locking bolt into the lock hole of different height, and then the height of the seat is adjusted.

[0013] As a preferred scheme of the learning chair convenient for noon break, the outer wall of the limiting frame is provided with a lock hole corresponding to the locking bolt, the locking bolt penetrates through the lock hole and is threadedly connected with the lifting rod, the height of the lifting rod is adjusted by inserting the locking bolt into the lock hole of different height, and then the height of the seat is adjusted.

[0014] Compared with the prior art, the learning chair convenient for noon break has the beneficial effects that:

[0015] The first double-shaft motor, the second double-shaft motor, the sliding seat, the sliding rail and the limiting pipe are matched with each other, the seat is moved forward on the base when the seat back is laid down, the gravity center of the seat is moved forward, and the stability of the seat is higher when a user lies down for noon break, and the seat is not prone to backward tilting and falling. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the present application will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0017] Figure 1 It is an appearance schematic view of the learning chair convenient for noon break of the present application;

[0018] Figure 2 It is a base structure schematic view of the learning chair convenient for noon break of the present application;

[0019] Figure 3 It is Figure 2 a structure schematic view of A in the middle;

[0020] Figure 4 The utility model discloses a learning chair's seat structure schematic diagram of convenient noon break.

[0021] Illustration: 1, base, 2, support, 3, limit support, 4, lifting rod, 5, locking bolt, 6, slide rail, 7, fixed frame, 8, first double-shaft motor, 9, screw rod, 10, limit tube, 11, limit rod, 12, slide base, 13, seat, 14, cushion, 15, second double-shaft motor, 16, connecting frame, 17, backrest, 18, headrest. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent and easy to understand, the specific embodiment of the utility model is described in detail below with reference to the drawings.

[0023] Secondly, the utility model is described in detail in combination with the schematic diagram, and in order to facilitate the description, the sectional view of the device structure will be partially enlarged without the general proportion when the embodiment of the utility model is described in detail, and the schematic diagram is only an example, which should not limit the scope of protection of the utility model here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiment of the utility model will be described in further detail below with reference to the drawings.

[0025] Please refer to Figures 1-4 The utility model provides a learning chair convenient for noon break, which comprises:

[0026] The base 1 comprises two support legs 2, the top of each support leg 2 is fixedly connected with a limit support 3, a lifting rod 4 is slidably connected in the limit support 3, and the lifting rod 4 and the outer wall of the limit support 3 are provided with a locking bolt 5.

[0027] In the embodiment, a lock hole corresponding to the locking bolt 5 is formed in the outer wall of the limit support 3, the locking bolt 5 penetrates the lock hole and is threadedly connected with the lifting rod 4, the locking bolt 5 is inserted into the lock hole of different height, the height of the lifting rod 4 is adjusted, and then the height of the seat 13 is adjusted.

[0028] The lifting rod 4 is fixedly connected with a slide rail 6 at the top, two fixed frames 7 are fixedly connected between the two slide rails 6, a first double-shaft motor 8 is fixedly connected between the two fixed frames 7, screw rods 9 are fixedly connected to the two drive shafts of the first double-shaft motor 8, a limit tube 10 is threadedly connected outside the screw rod 9, limit rods 11 are fixedly connected to the two sides of the limit tube 10, and a slide base 12 is arranged in the slide rail 6.

[0029] The fixed frame 7 side wall is provided with a sliding groove corresponding to the limiting rod 11, the limiting rod 11 is slidably connected with the inner wall of the sliding groove, the limiting pipe 10 penetrates the sliding rail 6 and extends to the inside, by inserting the limiting pipe 10 into the sliding rail 6, the position of the sliding seat 12 can be limited.

[0030] The seat 13 comprises a seat cushion 14 fixedly connected with the top of the sliding seat 12, the seat cushion 14 is internally fixedly connected with a second double-shaft motor 15 at one end, the two driving shafts of the second double-shaft motor 15 respectively penetrate the seat cushion 14 and are fixedly connected with connecting frames 16, and the two connecting frames 16 are fixedly connected with a backrest 17 at the top.

[0031] The top of the seat cushion 14 and the side of the backrest 17 close to the seat cushion 14 are both provided with breathable soft pads, so as to improve the comfort of users.

[0032] In the embodiment, a headrest 18 is insertedly arranged at the top of the backrest 17, and the top of the backrest 17 is provided with a slot corresponding to the headrest 18, so that the headrest 18 can be conveniently disassembled according to the use environment.

[0033] In use, the first double-shaft motor 8 and the second double-shaft motor 15 are connected with an external power supply, and the cooperative work and separate work between the first double-shaft motor 8 and the second double-shaft motor 15 can be realized through external PLC programming and frequency converter matching, which is the prior art and will not be described here.

[0034] In a normal sitting posture, the backrest 17 is arranged in a vertical state, and the sliding seat 12 at the bottom of the seat 13 cannot move after being limited by the limiting pipe 10.

[0035] The user can adjust the inclination angle of the backrest 17 within a certain angle by controlling the start and stop of the first double-shaft motor 8. The inclination angle has a critical value, and the rotation amplitude of the first double-shaft motor 8 and the second double-shaft motor 15 can be adjusted according to the supine needs of the user. At the same time, the second double-shaft motor 15 works synchronously to drive the screw rod 9 to rotate, and then drives the limiting pipe 10 outside to stretch and retract in the side wall of the sliding rail 6. Before the limiting pipe 10 is completely separated from the sliding rail 6, the seat cushion 14 and the base 1 are relatively fixed and cannot move.

[0036] When resting is needed, the first double-shaft motor 8 continues to drive the backrest 17 to rotate, and when the rotation angle of the backrest 17 exceeds the critical value, for example, the inclination angle between the backrest 17 and the horizontal plane is less than thirty degrees, at this time the limiting pipe 10 is completely separated from the sliding rail 6, and the sliding seat 12 can slide in the sliding rail 6 from the original rear end to the front end, and then the second double-shaft motor 15 is started alone to drive the limiting pipe 10 to reinsert into the sliding rail 6, so that the sliding seat 12 and the seat 13 can be fixed at the front end of the sliding rail 6, so that the center of gravity of the seat 13 moves forward after lying down, and the lying stability of the seat 13 is improved, and the seat 13 is not easy to fall down.

[0037] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A convenient study chair for lunch breaks, characterized in that: include: The base (1) includes two legs (2), and the top of each of the two legs (2) is fixedly connected to a limit frame (3). The limit frame (3) is slidably connected to a lifting rod (4). The lifting rod (4) and the outer wall of the limit frame (3) are provided with a locking bolt (5). The top of the lifting rod (4) is fixedly connected to a slide rail (6). The two slide rails (6) are fixedly connected to two fixed frames (7). The two fixed frames (7) are fixedly connected to a first dual-axis motor (8). The two drive shafts of the first dual-axis motor (8) are fixedly connected to lead screws (9). The lead screws (9) are threadedly connected to a limit tube (10). The limit tube (10) is fixedly connected to both sides of the limit rod (11). The slide rail (6) is provided with a slide seat (12). The seat (13) includes a cushion (14) fixedly connected to the top of the slide (12). A second dual-axis motor (15) is fixedly connected inside one end of the cushion (14). The two drive shafts of the second dual-axis motor (15) pass through the cushion (14) and are fixedly connected to a connecting frame (16). A backrest (17) is fixedly connected to the top of the two connecting frames (16).

2. The study chair for convenient lunch breaks according to claim 1, characterized in that, The outer wall of the limiting frame (3) is provided with a locking hole corresponding to the locking bolt (5), and the locking bolt (5) passes through the locking hole and is threadedly connected to the lifting rod (4).

3. A study chair for convenient lunch breaks according to claim 1, characterized in that, The side wall of the fixed frame (7) is provided with a sliding groove corresponding to the limiting rod (11). The limiting rod (11) is slidably connected to the inner wall of the sliding groove. The limiting tube (10) passes through the slide rail (6) and extends into it.

4. A study chair for convenient lunch breaks according to claim 1, characterized in that, A headrest (18) is inserted into the top of the backrest (17), and a slot corresponding to the headrest (18) is opened on the top of the backrest (17).

5. A study chair for convenient lunch breaks according to claim 1, characterized in that, The top of the seat cushion (14) and the side of the backrest (17) near the seat cushion (14) are both provided with breathable soft pads.

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