Combined desk and chair

Abstract

The utility model provides a combined desk and chair, which is provided with a front desk on the front side, a plurality of middle desks and chairs in the middle and a rear arm-chair on the rear side, and the front desk, the middle desks and chairs and the rear arm-chair are respectively provided with a supporting piece for fixing a writing board or a seat board. And the supporting piece is fixed on the ground through a fastening screw. The utility model aims to provide the retractable combined desk and chair which is fixed on the ground, and has the following advantages that the desk and chair are fixed on the ground, the joint of the desk and the ground is attractive in appearance and dustproof by adopting the foot margin cover, and the reinforcing ribs are arranged on the two sides of the foot margin cover, so that the fixing effect is enhanced; the book net can be adjusted at multiple angles to meet different placement requirements; and a limiting device is arranged on the seat, so that the seat plate is prevented from being collided easily when being unfolded and folded.

Description

Technical Field

[0001] This utility model belongs to the field of teaching material equipment technology, specifically relating to a modular desk and chair. Background Technology

[0002] Classroom desks and chairs are among the most frequently used learning equipment for students during their time at school, directly impacting their healthy development and learning outcomes. Traditional desks and chairs consist of a table and a chair, both of which are movable, with a square, fixed drawer underneath the table. Because they are frequently moved, they are inconvenient for school management and maintenance. The square, fixed drawer has limited space and volume, making it unsuitable for accommodating university students' backpacks. Furthermore, due to the lack of expandability, they must be discarded if the school relocates to a different location and requires additional electricity, resulting in excessively high costs.

[0003] Although various improved desks and chairs have been developed to address the aforementioned issues, they still cannot adequately meet the characteristics and needs of university classes. Summary of the Invention

[0004] In view of the above-mentioned technical problems, the present invention provides a modular desk and chair, which aims to overcome the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A modular desk and chair system includes a front desk 1 at the front, a middle desk and chair 2 in the middle, and a rear chair 3 at the rear. Multiple middle desks and chairs 2 can be arranged in the front and back. The front desk 1, the middle desk and chair 2, and the rear chair 3 all have support members 4 for fixing a writing board or seat 16. The support members 4 are fixed to the ground by fastening screws.

[0007] Furthermore, the support member 4 has a support leg 5, the lower end of which is fixedly connected to the foot 6. The foot 6 is fixed to the ground by fastening screws, and a foot cover 7 is provided on the foot 6.

[0008] Furthermore, a crossbeam 8 is fixed on the support leg 5. The crossbeam 8 is a triangular tube with one side parallel to the ground. Multiple crossbars 14 are arranged above the crossbeam 8. A back plate 13 is fixed between the upper fixed rod 11 and the lower fixed rod 12 and is placed above the crossbars 14. After the upper fixed rod 11, the back plate 13, the lower fixed rod 12, and the multiple crossbars 14 are sequentially combined, support columns 9 are provided at both ends of the combination to fix the combination. The support columns 9 have a slightly S-shaped curve design. A triangular support 10 is provided at the lower end of the support column 9. The triangular support 10 is fixed to the crossbeam 8 by screws.

[0009] Furthermore, a writing board is fixed to the upper rear side of the front desk 1, and a book net 15 is installed at the position of the crossbeam 8 below the writing board, with the opening of the book net 15 tilting upwards.

[0010] Furthermore, a seat 16 is provided on the front side of the central table and chair 2, and a writing board is fixed on the upper rear side. A book net 15 is also installed at the position of the crossbeam 8 below the writing board.

[0011] Furthermore, a seat 16 is provided on the front side of the rear seat 3.

[0012] Furthermore, the book net 15 has a net body 17, and a rotating shaft 17.1 is provided at the lower part of the net body 17. The two ends of the rotating shaft 17.1 are rotatably mounted on the fixing member 18. The fixing member 18 has a base plate 18.1, a side plate 18.2 perpendicular to the base plate 18.1, and a sliding groove 18.3 opened on the side plate 18.2. Multiple snap-fit ​​positions are provided on the lower side of the sliding groove 18.3.

[0013] A pull rod 19 is hinged to one side of the net body 17, and a handle 20 is hinged to the other side. The protrusions at the front ends of the pull rod 19 and the handle 20 are both located in the slide groove 18.3. By moving the handle 20, the protrusions are engaged in different engagement positions.

[0014] Furthermore, the center of gravity of the net body 17 is located behind the pivot 17.1.

[0015] Furthermore, the seat 16 includes a seat plate connector 21 fixed to the support member 4 and a seat plate 25 rotatable on the seat plate connector 21, the front of the seat plate 25 being arc-shaped.

[0016] Furthermore, the front end of the seat plate connector 21 is configured as a circular connecting seat 22, a circular hole 23 is provided in the center of the connecting seat 22, and a limiting groove 24 is provided on the side of the circular hole 23.

[0017] A connecting plate 26 is fixed on the lower side of the seat plate 25. A circular connector 27 is fixed on the connecting plate 26. A cylinder 28 is provided at the center of the connector 27. The cylinder 28 is disposed in the circular hole 23. A limiting protrusion 29 is provided on the side of the cylinder 28. The limiting protrusion 29 cooperates with the limiting groove 24 to realize the unfolding and retraction of the seat plate 25.

[0018] The purpose of this utility model is to provide a fixed, retractable, modular desk and chair system with the following advantages: 1. The book net is adjustable at multiple angles and opens upwards at an angle, optimizing storage space and solving the problem that college students' backpacks cannot fit into ordinary book drawers; 2. The crossbeam adopts a triangular tube design, which has strong pressure resistance and can be expanded according to actual needs to achieve switching between live and non-live functions. For example, a socket panel can be embedded in the side of the crossbeam. Since the side faces the students and has an inclined angle, it is convenient to look directly at the socket to plug and unplug the power adapter. At the same time, the socket is modified at the crossbeam, which saves costs and does not affect the students' use of the desk; 3. The desk and chair in the middle share a single support leg, saving space and increasing the classroom seating capacity; 4. 1. The seat is fixed to the ground with a foot cover, making the connection point aesthetically pleasing and dustproof. Reinforcing ribs on both sides of the foot cover enhance the fixation. 5. The seat is foldable for easy student access. 6. A limit device is installed on the seat to protect it from impacts when opening and closing. 7. The perforated design of the seat backrest crossbars provides good breathability, reducing back stuffiness and improving student comfort. 8. The slightly S-shaped curve of the backrest provides good spinal support, maintaining the natural physiological curvature. 9. Multiple crossbars ensure effective lumbar support, reducing pressure on the lower back. 10. The curved design of the front edge of the seat avoids pressure on the front of the thighs, promoting blood circulation in the legs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the support structure of the modular desk and chair of this utility model;

[0021] Figure 3 This is a schematic diagram of the front desk of the combined desk and chair of this utility model;

[0022] Figure 4 This is a structural diagram of the middle section of the combined desk and chair of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the rear backrest of the modular desk and chair of this utility model;

[0024] Figure 6 This is a schematic diagram of the book net structure of the combined desk and chair of this utility model;

[0025] Figure 7 This utility model Figure 6 Exploded view;

[0026] Figure 8 This is a diagram showing the open state of the book web of this utility model;

[0027] Figure 9 This is a diagram showing the closed state of the book net of this utility model;

[0028] Figure 10 This is a schematic diagram of the seat plate structure of this utility model;

[0029] Figure 11 This is a structural schematic diagram of the seat plate connector of this utility model;

[0030] The diagram shows: 1. Front desk; 2. Middle desk and chair; 3. Rear chair; 4. Support piece; 5. Support leg; 6. Leg; 7. Base plate; 8. Crossbeam; 9. Support column; 10. Triangular support; 11. Upper fixing rod; 12. Lower fixing rod; 13. Back panel; 14. Crossbar; 15. Book net; 16. Seat; 17. Net body; 17.1 Rotating shaft; 18. Fixture; 18. Base plate; 18.1 Side panel; 18.2 Slide groove; 18.3 Pull rod; 19. Handle; 20. Seat plate connector; 21. Connecting seat; 22. Round hole; 23. Limiting groove; 24. Seat plate; 25. Connecting plate; 26. Connector; 27. Cylinder; 28. Limiting protrusion; 29. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0035] This utility model discloses a modular desk and chair. It should be noted that the modular desk and chair is not only suitable for flat ground, but also for sloping ground or tiered classrooms.

[0036] Example 1

[0037] like Figure 1 As shown, the modular desk and chair system of this utility model includes a front desk 1 at the front, a middle desk and chair 2 in the middle, and a rear chair 3 at the rear. There is only one front desk 1 and one rear chair 3, but multiple middle desks and chairs 2 can be provided according to usage needs. Based on site requirements and layout design, multiple front desks, middle desks and chairs, and rear chairs can be arranged side-by-side on the left and right sides.

[0038] According to the appendix Figure 3 , 4 As shown in Figure 5, the front desk 1, the middle desk and chair 2, and the rear chair 3 all have support members 4 for fixing the writing board or seat 16. The support members 4 are fixed to the ground by fastening screws.

[0039] According to the appendix Figure 2 As shown, the support member 4 has support legs 5, the lower end of which is fixedly connected to the bracket 6. The bracket 6 is fixed to the ground by fastening screws, and a foot cover 7 is provided on the bracket 6. The foot cover 7 is made of high-quality PP engineering plastic and is formed in one piece by hot pressing. It has a rounded shape around the edges and reinforcing ribs on both sides to enhance the load-bearing capacity and resistance to deformation, making the connection with the ground aesthetically pleasing and dustproof.

[0040] A crossbeam 8 is fixed to the support leg 5, see attached diagram. Figure 2 The crossbeam 8 is a triangular tube with one side parallel to the ground. Multiple crossbars 14 are installed above the crossbeam 8. A back plate 13 is fixed between the upper fixed rod 11 and the lower fixed rod 12 and is placed above the crossbars 14. After the upper fixed rod 11, the back plate 13, the lower fixed rod 12 and the multiple crossbars 14 are sequentially combined, support columns 9 are set at both ends of the combination to fix the combination. The support columns 9 have a slightly S-shaped curve design. A triangular support 10 is set at the lower end of the support column 9. The triangular support 10 is fixed to the crossbeam 8 by screws.

[0041] Example 2

[0042] Based on the first embodiment, in this embodiment,

[0043] A writing board is fixed to the upper rear side of the front desk 1, and a book net 15 is installed at the position of the crossbeam 8 below the writing board. The opening of the book net 15 is tilted upwards and opens. A seat 16 is set on the front side of the middle desk and chair 2, and a writing board is fixed to the upper rear side. A book net 15 is also installed at the position of the crossbeam 8 below the writing board. The opening of the book net 15 is tilted upwards and opens. A seat 16 is set on the front side of the rear chair 3.

[0044] Example 3

[0045] Based on the second embodiment, in this embodiment,

[0046] According to the appendix Figure 6 , 3 As shown, the book net 15 has a net body 17, and a rotating shaft 17.1 is provided at the lower part of the net body 17. The two ends of the rotating shaft 17.1 are rotatably mounted on the fixing member 18. The fixing member 18 has a base plate 18.1, a side plate 18.2 perpendicular to the base plate 18.1, and a sliding groove 18.3 opened on the side plate 18.2. Multiple snap-fit ​​positions are provided on the lower side of the sliding groove 18.3.

[0047] A pull rod 19 is hinged to one side of the net body 17 by screws and nuts, and a handle 20 is hinged to the other side by screws and nuts. The protrusions at the front ends of the pull rod 19 and the handle 20 are both in the groove 18.3. By moving the handle 20, the protrusions are engaged in different engagement positions.

[0048] The center of gravity of the mesh body 17 is located behind the pivot 17.1, thus forming a protruding post that can be snapped into the snap-fit ​​position at any location, such as... Figure 8 , 9 As shown, the book net is displayed in both open and closed states. The book net has multiple adjustable levels to adapt to different placement needs.

[0049] Example 4

[0050] Based on the third embodiment, in this embodiment,

[0051] The seat 16 includes a seat plate connector 21 fixed to the support member 4 and a seat plate 25 rotatable on the seat plate connector 21, see attached figure. Figure 1 The front of the seat plate 25 has an arc-shaped design. The front end of the seat plate connector 21 is set as a circular connecting seat 22, and a circular hole 23 is provided in the center of the connecting seat 22. A limit groove 24 is provided on the side of the circular hole 23.

[0052] A connecting plate 26 is fixed on the lower side of the seat plate 25. A circular connector 27 is fixed on the connecting plate 26. A cylinder 28 is provided at the center of the connector 27. The cylinder 28 is disposed in the circular hole 23. A limiting protrusion 29 is provided on the side of the cylinder 28. The limiting protrusion 29 cooperates with the limiting groove 24 to realize the unfolding and retraction of the seat plate 25 and to protect the seat plate.

[0053] Example 5

[0054] Based on the fourth embodiment, in this embodiment,

[0055] Electrical wires can be routed from the ground, passing through the support leg 5 and into the crossbeam 8. A socket panel can be embedded in a hole drilled in the side of the crossbeam 8, successfully transforming non-electric desks and chairs into electrically powered ones, achieving reuse and saving costs. Furthermore, due to the angled side of the crossbeam 8, students can easily see the socket while looking down, facilitating the plugging and unplugging of power adapters.

[0056] The purpose of this utility model is to provide a fixed, retractable, modular desk and chair system with the following advantages: 1. The book net is adjustable at multiple angles and opens upwards at an angle, optimizing storage space and solving the problem that college students' backpacks cannot fit into ordinary book drawers; 2. The crossbeam adopts a triangular tube design, which has strong pressure resistance and can be expanded according to actual needs to achieve switching between live and non-live functions. For example, a socket panel can be embedded in the side of the crossbeam. Since the side faces the students and has an inclined angle, it is convenient to look directly at the socket to plug and unplug the power adapter. At the same time, the socket is modified at the crossbeam, which saves costs and does not affect the students' use of the desk; 3. The desk and chair in the middle share a single support leg, saving space and increasing the classroom seating capacity; 4. 1. The seat is fixed to the ground with a foot cover, making the connection point aesthetically pleasing and dustproof. Reinforcing ribs on both sides of the foot cover enhance the fixation. 5. The seat is foldable for easy student access. 6. A limit device is installed on the seat to protect it from impacts when opening and closing. 7. The perforated design of the seat backrest crossbars provides good breathability, reducing back stuffiness and improving student comfort. 8. The slightly S-shaped curve of the backrest provides good spinal support, maintaining the natural physiological curvature. 9. Multiple crossbars ensure effective lumbar support, reducing pressure on the lower back. 10. The curved design of the front edge of the seat avoids pressure on the front of the thighs, promoting blood circulation in the legs.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular school desk and chair set, characterized in that: The modular desk and chair set includes a front desk (1) at the front, a middle desk and chair set (2) in the middle, and a rear chair set (3) at the rear. Multiple middle desks and chairs (2) can be set in the front and back. The front desk (1), the middle desk and chair set (2), and the rear chair set (3) all have support members (4) for fixing a writing board or a seat (16). The support members (4) are fixed to the ground by fastening screws.

2. The modular desk and chair according to claim 1, characterized in that: The support member (4) has a support leg (5), the lower end of which is fixedly connected to the foot (6). The foot (6) is fixed to the ground by fastening screws, and a foot cover (7) is provided on the foot (6).

3. The modular desk and chair according to claim 2, characterized in that: A crossbeam (8) is fixed on the support leg (5). A support column (9) is provided in the middle and at both ends of the crossbeam (8). A triangular support (10) is provided at the lower end of the support column (9). The triangular support (10) is fixed to the crossbeam (8) by screws. A back plate (13) is fixed to the upper part between the support columns (9) by an upper fixing rod (11) and a lower fixing rod (12). Multiple crossbars (14) are provided at the lower part between the support columns (9).

4. The modular desk and chair according to claim 3, characterized in that: A writing board is fixed on the upper rear side of the front desk (1), and a book net (15) is installed at the position of the crossbeam (8) below the writing board. The opening of the book net (15) is tilted upward.

5. A modular desk and chair system according to claim 4, characterized in that: A seat (16) is provided on the front side of the central table and chair (2), and a writing board is fixed on the upper rear side. A book net (15) is also installed at the position of the crossbeam (8) below the writing board.

6. A modular desk and chair system according to claim 5, characterized in that: A seat (16) is provided on the front side of the rear seat (3).

7. A modular desk and chair system according to claim 6, characterized in that: The book net (15) has a net body (17), and a rotating shaft (17.1) is provided at the lower part of the net body (17). The two ends of the rotating shaft (17.1) are rotatably mounted on a fixing member (18). The fixing member (18) has a base plate (18.1), a side plate (18.2) perpendicular to the base plate (18.1), and a sliding groove (18.3) opened on the side plate (18.2). Multiple snap-fit ​​positions are provided on the lower side of the sliding groove (18.3). A pull rod (19) is hinged to one side of the net body (17), and a handle (20) is hinged to the other side. The protrusions at the front ends of the pull rod (19) and the handle (20) are both in the groove (18.3). By moving the handle (20), the protrusions are engaged in different engagement positions.

8. A modular desk and chair system according to claim 7, characterized in that: The center of gravity of the net body (17) is located behind the pivot (17.1).

9. A modular desk and chair system according to claim 8, characterized in that: The seat (16) includes a seat plate connector (21) fixed to the support member (4) and a seat plate (25) rotatable on the seat plate connector (21), the front of the seat plate (25) being arc-shaped.

10. A modular desk and chair system according to claim 9, characterized in that: The front end of the seat plate connector (21) is configured as a circular connector (22), and a circular hole (23) is provided in the center of the connector (22). A limiting groove (24) is provided on the side of the circular hole (23). A connecting plate (26) is fixed on the lower side of the seat plate (25). A circular connector (27) is fixed on the connecting plate (26). A cylinder (28) is provided at the center of the connector (27). The cylinder (28) is located in the circular hole (23). A limiting protrusion (29) is provided on the side of the cylinder (28). The limiting protrusion (29) cooperates with the limiting groove (24) to realize the unfolding and retraction of the seat plate (25).

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