Plate-axis multifunctional chair and stool and construction method thereof

Abstract

The present invention discloses a plate-axis multifunctional chair and stool and a construction method thereof. The chair and stool comprises a base portion for supporting and a backrest portion for back support. The base portion is formed by connecting a third plate, a fourth plate, and a fifth plate end to end through a rotating portion between two plates. The backrest portion is formed by connecting a first plate and a second plate through a rotating portion between the two plates. The rotating portion where the third plate is located and the rotating portion where the second plate is located form a bridge-like connection through a connecting block. When the first locking mechanism is released, the base portion and the backrest portion are in an unfolded position to form a bed. The present invention realizes the mutual conversion between the chair and stool and the bed through a plate-axis design, expands the function of the chair and stool, and when applied to teaching chairs and stools, it can bring convenience to students during lunch breaks. At the same time, it has a folding function and is easy to carry.

Description

Technical Field

[0001] The invention relates to the technical field of chairs and stools, in particular to a plate-axis multifunctional chair and stool and a construction method thereof. Background Art

[0002] In the prior art, the steel stools and chairs used in schools usually have front and rear legs welded to the frame below the connecting seat, or a backrest support rod welded to the frame above the connecting seat. This has its shortcomings: first, the welded integral frame stools and chairs require a large amount of space to be placed, making them inconvenient to carry when the school organizes students to participate in large-scale public welfare activities. More importantly, the presence of such welded integral frame stools and chairs limits the available space in the classroom, forcing students to rest on the table during lunch break, which is not conducive to sleep quality. Therefore, a multifunctional stool is urgently needed to change this situation. Summary of the Invention

[0003] The purpose of the present invention is to provide a plate-axis multifunctional chair stool. Through the plate-axis design, the mutual transformation between the chair stool and the bed is realized, and the function of the chair stool is expanded. When used as a teaching chair stool, it can bring convenience to students' lunch break. At the same time, it has a folding function, which is easy to carry, solving the problems in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a plate-axis multifunctional chair stool, the chair stool comprising a base portion for supporting and a backrest portion for back support;

[0005] The base portion is composed of a third plate, a fourth plate, and a fifth plate connected end to end via rotating portions between each of the plates, and the backrest portion is composed of a first plate and a second plate connected via a rotating portion between the first plate and the second plate. The rotating portion where the third plate is located and the rotating portion where the second plate is located form a bridge-like connection via a connecting block. To stabilize the backrest portion and the base portion, a first locking mechanism is provided between the rotating portion where the third plate is located away from the connecting block and the rotating portion where the second plate is located away from the connecting block. When the first locking mechanism is released, the base portion and the backrest portion are in an unfolded position to form a bed.

[0006] In order to ensure the adjustability and stability of the base and the backrest, adjustment and fixing mechanisms are respectively provided on the rotating parts where the fourth plate and the third plate, the fourth plate and the fifth plate, and the first plate and the second plate are located.

[0007] Preferably, the rotating part includes two mounting blocks, a mounting shaft is rotatably mounted between the two mounting blocks, a rotating sleeve is rotatably mounted on the middle part of the mounting shaft, the fourth plate where the base part is located is fixedly connected to the rotating sleeve, and the third plate and the fifth plate where the base part is located are respectively fixedly connected to the corresponding mounting shafts.

[0008] Preferably, each of the adjustment and fixing mechanisms includes a ratchet gear, which is fixedly mounted on one of the ends of the mounting shafts; a first fixed block is fixedly mounted on the side wall of the mounting block where the ratchet gear is located; a ratchet gear matching the ratchet gear is rotatably mounted on the first fixed block; and a spring piece for supporting the ratchet gear is fixedly connected to the first fixed block.

[0009] Preferably, the first locking mechanism includes a guide column fixed on one of the mounting blocks, a card block is slidably mounted on the guide column, a second fixed block is fixedly mounted on the end of the guide column, a spring is connected between the second fixed block and the card block, and a card slot for inserting the card block is provided on the other corresponding mounting block.

[0010] Preferably, in order to ensure further stability of the base part, the rotating part where the fifth plate is located is connected to a retractable connecting plate assembly, and the connecting plate assembly includes a sleeve plate rotating on the mounting shaft, and a pull-out plate is slidably installed inside the sleeve plate, and a rotating part is provided at one end of the pull-out plate away from the sleeve plate, and a second locking mechanism is connected between the rotating part where the pull-out plate is located and the connecting block, and the second locking mechanism has the same structure as the first locking mechanism.

[0011] Preferably, a limiting groove is provided on the sleeve plate, and a corresponding limiting bolt is threadedly connected inside the limiting groove, and the bottom of the limiting bolt is in conflict with the upper surface of the pull-out plate.

[0012] Preferably, support mechanisms are provided on both sides of the first plate to prevent it from tilting forward, and the support mechanisms include two mounting sleeves and plug-in slots fixed on the tops of corresponding mounting blocks, and the two mounting sleeves are rotatably installed on both sides of the first plate through pin shafts, and a movable rod is slidably installed inside each mounting sleeve, and each mounting sleeve is locked to the movable rod by a locking bolt, and a plug-in rod is rotatably installed at the bottom end of each movable rod, and the plug-in rod is T-shaped, and a groove for limiting the T-shaped part of the plug-in rod is provided inside the plug-in slot.

[0013] Preferably, the second plate and the third plate are equal in length.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention realizes the mutual transformation between a chair and a bed through a plate-axis design, which expands the function of the chair. When used as a teaching chair, it can bring convenience to students during lunch break. At the same time, it has a folding function and is easy to carry.

[0016] 2. The present invention can achieve one-way step-by-step adjustment by adjusting the fixing mechanism through the cooperation of the ratchet gear and the ratchet wheel. According to the user's own needs, the angle of the third plate and the fifth plate relative to the fourth plate can be changed. By adjusting the step-by-step adjustment of the fixing mechanism, the height of the chair can be accurately adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic side view of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0019] Figure 3 It is a schematic top view of the three-dimensional structure of the present invention;

[0020] Figure 4 It is a bottom-up three-dimensional structural schematic diagram of the present invention;

[0021] Figure 5 It is a side structural schematic diagram of the present invention;

[0022] Figure 6 It is a side view schematic diagram of the structure after the height of the present invention is changed;

[0023] Figure 7 It is a side view schematic diagram of the structure of the bed of the present invention in sleeping state;

[0024] Figure 8 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0025] Figure 9 For the present invention Figure 1 Enlarged structural diagram at point B in the middle.

[0026] In the figure: 1. First plate; 2. Second plate; 3. Third plate; 4. Fourth plate; 5. Fifth plate; 6. Sleeve plate; 7. Mounting block; 8. Rotating sleeve; 10. Pull-out plate; 11. Limiting groove; 12. Limiting bolt; 13. Mounting sleeve; 14. Movable rod; 15. Connecting rod; 16. Connecting groove; 17. Locking bolt; 18. Mounting shaft; 19. Connecting block; 20. First fixed block; 21. Ratchet gear; 22. Shrapnel; 23. Ratchet; 24. Slot; 25. Spring; 26. Block; 27. Guide column; 28. Second fixed block. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1 to 9 , the present invention provides a technical solution: a plate-axis multifunctional chair stool, the chair stool includes a base portion for supporting and a backrest portion for back support;

[0029] The base portion is formed by connecting the third plate 3, the fourth plate 4, and the fifth plate 5 end to end via a rotating portion between each of them. The backrest portion is formed by connecting the first plate 1 and the second plate 2 via a rotating portion between them. The rotating portion where the third plate 3 is located and the rotating portion where the second plate 2 is located form a bridge-like connection via a connecting block 19. To stabilize the backrest portion and the base portion, a first locking mechanism is provided between the rotating portion where the third plate 3 is located away from the connecting block 19 and the rotating portion where the second plate 2 is located away from the connecting block 19. When the first locking mechanism is released, the base portion and the backrest portion are in the unfolded position to form a bed.

[0030] In order to ensure the adjustability and stability of the base and the backrest, adjustment and fixing mechanisms are respectively provided on the rotating parts where the fourth plate 4 and the third plate 3, the fourth plate 4 and the fifth plate 5, and the first plate 1 and the second plate 2 are located.

[0031] like Figure 1 As shown, when in the chair stool state, the fourth plate 4 can be used as the support portion of the chair stool for the user to sit and stand, and the first plate 1 can be used as a backrest. When it is necessary to transform it into a bed, the backrest and the rotating portion where the base portion is located can be separated from each other, so that the first plate 1 and the second plate 2 are close to the ground and in the expanded structure, and the third plate 3, the fourth plate 4, the fifth plate 5 and the connecting plate assembly are close to the ground and in the same plane, as shown in FIG. Figure 7 As shown, it is easy to form a bed structure. Through the mutual transformation between the chair and the bed, the function of the chair is expanded. When used as a teaching chair, it can bring convenience to students' lunch break.

[0032] Specifically, the rotating part includes two mounting blocks 7, a mounting shaft 18 is rotatably installed between the two mounting blocks 7, a rotating sleeve 8 is rotatably installed in the middle of the mounting shaft 18, the fourth plate 4 where the base is located is fixedly connected to the rotating sleeve 8, and the third plate 3 and the fifth plate 5 where the base is located are respectively fixedly connected to the corresponding mounting shafts 18.

[0033] The provided rotating portion facilitates forming a certain bending angle between the two plates, and the first rotating sleeve 8 is deflected relative to the mounting shaft 18, so as to facilitate flexible and rapid conversion between the stool and the bed.

[0034] Specifically, each adjustment and fixing mechanism includes a ratchet gear 21, which is fixedly mounted on the end of one of the mounting shafts 18. A first fixed block 20 is fixedly mounted on the side wall of the mounting block 7 where the ratchet gear 21 is located. A ratchet gear 21 matching the ratchet 23 is rotatably mounted on the first fixed block 20, and a spring piece 22 for supporting the ratchet gear 21 is fixedly connected to the first fixed block 20.

[0035] The adjustment and fixing mechanism is formed by the cooperation of the ratchet gear 21 and the ratchet wheel 23, which can realize one-way step-by-step adjustment. Figures 5 and 6 During the process, the angles of the third plate 3 and the fifth plate 5 relative to the fourth plate 4 can be changed according to the user's own needs. By adjusting the fixing mechanism step by step, the height of the chair can be accurately adjusted. At the same time, the fixing mechanism is adjusted between the first plate 1 and the second plate 2, which can conveniently adjust the inclination angle of the first plate 1 serving as a backrest, greatly improving the adjustability and safety.

[0036] Specifically, the first locking mechanism includes a guide column 27 fixed on one of the mounting blocks 7, a card block 26 is slidably mounted on the guide column 27, a second fixed block 28 is fixedly mounted on the end of the guide column 27, a spring 25 is connected between the second fixed block 28 and the card block 26, and a card slot 24 for inserting the card block 26 is provided on the other corresponding mounting block 7.

[0037] The setting of the first locking mechanism can quickly realize the fixing and releasing between the two mounting blocks 7, through the guide column 27 fixed on one mounting block 7, cooperating with the block 26 slidably installed thereon. When the block 26 is manually pressed, the block 26 is disengaged from the slot 24 opened on the other mounting block 7. At this time, the backrest part and the base part can be separated, thereby improving the conversion efficiency between the chair stool and the bed.

[0038] Specifically, in order to ensure further stability of the base, the rotating part where the fifth plate 5 is located is connected to a retractable connecting plate assembly, and the connecting plate assembly includes a sleeve plate 6 that rotates on the mounting shaft 18, and a pull-out plate 10 is slidably installed inside the sleeve plate 6. The pull-out plate 10 is provided with a rotating part at one end away from the sleeve plate 6, and a second locking mechanism is connected between the rotating part where the pull-out plate 10 is located and the connecting block 19, and the second locking mechanism has the same structure as the first locking mechanism.

[0039] Through the retractable connecting plate assembly, when it is in the chair or stool state, the cooperation between the connecting plate assembly and the second locking mechanism can form a closed trapezoid between the third plate 3, the fourth plate 4, the fifth plate 5 and the connecting plate assembly. Through the interaction between the edges, the stability of the base portion can be further improved. At the same time, when it is in the bed state, the length of the connecting plate assembly is adjustable, which is convenient for increasing the length of the bed and is convenient for users to adjust according to their own needs.

[0040] Specifically, a limiting groove 11 is provided on the sleeve plate 6 , and a corresponding limiting bolt 12 is threadedly connected to the inner portion of the limiting groove 11 , and the bottom of the limiting bolt 12 is in conflict with the upper surface of the pull-out plate 10 .

[0041] The changed length of the connecting plate assembly can be locked by the cooperation between the limiting groove 11 and the limiting bolt 12 .

[0042] Specifically, support mechanisms are provided on both sides of the first plate 1 to prevent it from tilting forward. The support mechanisms include two mounting sleeves 13 and plug-in slots 16 fixed on the tops of the corresponding mounting blocks 7. The two mounting sleeves 13 are rotatably installed on both sides of the first plate 1 through pin shafts. A movable rod 14 is slidably installed inside each mounting sleeve 13. Each mounting sleeve 13 and the movable rod 14 are locked by a locking bolt 17. A plug-in rod 15 is rotatably installed at the bottom end of each movable rod 14, and the plug-in rod 15 is T-shaped. A groove for limiting the T-shaped part of the plug-in rod 15 is provided inside the plug-in slot 16.

[0043] like Figure 1 As shown, in the chair and stool state, the adjustment and fixing mechanism on the rotating part where the first plate 1 and the second plate 2 are located can be used to lock the first plate 1 in one direction when it is adjusted backward. In order to prevent the first plate 1 from tilting forward, the plug rod 15 is inserted into the corresponding plug groove 16 and interferes with the groove inside it. At this time, the first plate 1 can be supported. Figure 7 As shown, when the bed is in the bed state, the connecting rod 15 can provide reverse support to the first plate 1 .

[0044] Specifically, the second plate 2 and the third plate 3 are equal in length.

[0045] When the lengths of the second plate 2 and the third plate 3 are equal, it is convenient for the first locking mechanism between the backrest portion and the base portion to complete locking.

[0046] Specifically, a method for converting a stool into a bed structure includes:

[0047] S1: When the chair is in the stool state, the plug-in rod 15 is first disengaged from the groove inside the plug-in slot 16 through the rotatable plug-in rod 15 on the support mechanism, and the plug-in rod 15 is rotated. By changing its direction, it can be taken out of the through slot opened at the top of the plug-in slot 16, and the plug-in rod 15 is rotated to the rear side of the first plate 1;

[0048] S2: The first locking mechanism between the backrest and the base is then released, and the block 26 is manually pressed to disengage the block 26 from the slot 24. At this point, the backrest and the rotating portion where the base are located are separated from each other, so that the first plate 1 and the second plate 2 are close to the ground and in the deployed configuration. At this point, the connecting rod 15 can provide reverse support for the first plate 1.

[0049] S3: Similarly, the second locking mechanism of the connecting plate assembly is released. Through the adjustment and fixing mechanisms provided on the fourth plate 4 and the third plate 3, and the fourth plate 4 and the fifth plate 5, the corresponding spring pieces 22 are manually pressed so that the ratchet gear 21 no longer hinders the rotation of the ratchet wheel 23. The fourth plate 4 and the third plate 3, and the fourth plate 4 and the fifth plate 5 can then rotate relative to each other. At this time, the third plate 3, the fourth plate 4, the fifth plate 5 and the connecting plate assembly are close to the ground and in the same plane, thereby facilitating the formation of a sleeping bed structure.

[0050] S4: In order to further improve the quality of sleep, an inclination angle can be created between the first plate 1 and the second plate 2. At this time, the first plate 1 is equivalent to a pillow of the bed. Due to the adjustment and fixing mechanism provided on the rotating parts of the first plate 1 and the second plate 2, it has a one-way self-locking function, and cooperates with the reverse support of the plug-in rod 15 to support the user's head. At the same time, in order to adapt to the sleeping habits of different people, due to the adjustment and fixing mechanism between the fourth plate 4 and the fifth plate 5, when the support angle between the fourth plate 4 and the fifth plate 5 is adjusted, it is convenient to support the user's legs.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Plate-axis multifunctional chair and stool, Features: The chair stool comprises a base portion for supporting and a backrest portion for back support; The base portion is composed of a third plate (3), a fourth plate (4), and a fifth plate (5) connected end to end via a rotating portion between the two plates, and the backrest portion is composed of a first plate (1) and a second plate (2) connected via a rotating portion between the two plates, and the rotating portion where the third plate (3) is located and the rotating portion where the second plate (2) is located form a bridge-like connection via a connecting block (19) to stabilize the backrest portion and the base portion; The rotating part comprises two mounting blocks (7), a mounting shaft (18) is rotatably mounted between the two mounting blocks (7), a rotating sleeve (8) is rotatably mounted in the middle of the mounting shaft (18), the fourth plate (4) where the base part is located is fixedly connected to the rotating sleeve (8), and the third plate (3) and the fifth plate (5) where the base part is located are respectively fixedly connected to the corresponding mounting shafts (18); A first locking mechanism is provided between the rotating portion of the third plate (3) away from the connecting block (19) and the rotating portion of the second plate (2) away from the connecting block (19); when the first locking mechanism is released, the base portion and the backrest portion are in an unfolded position to form a bed; In order to ensure the adjustability and stability of the base and the backrest, adjustment and fixing mechanisms are respectively provided on the fourth plate (4) and the third plate (3), the fourth plate (4) and the fifth plate (5), and the rotating parts where the first plate (1) and the second plate (2) are located.

2. The plate-axis multifunctional chair and stool according to claim 1, Features: Each of the adjusting and fixing mechanisms comprises a ratchet gear (21), the ratchet gear (21) being fixedly mounted on the end of one of the mounting shafts (18), a first fixing block (20) being fixedly mounted on the side wall of the mounting block (7) where the ratchet gear (21) is located, a ratchet gear (21) matching the ratchet wheel (23) being rotatably mounted on the first fixing block (20), and a spring sheet (22) for supporting the ratchet gear (21) being fixedly connected to the first fixing block (20).

3. The plate-axis multifunctional chair and stool according to claim 1, Features: The first locking mechanism comprises a guide column (27) fixed on one of the mounting blocks (7), a clamping block (26) being slidably mounted on the guide column (27), a second fixing block (28) being fixedly mounted on the end of the guide column (27), a spring (25) being connected between the second fixing block (28) and the clamping block (26), and a clamping slot (24) for inserting the clamping block (26) being provided on the other mounting block (7) corresponding thereto.

4. The plate-axis multifunctional chair and stool according to claim 3, Features: In order to ensure further stability of the base part, the rotating part where the fifth plate (5) is located is connected to a retractable connecting plate assembly, and the connecting plate assembly includes a sleeve plate (6) rotating on a mounting shaft (18), and a pull-out plate (10) is slidably installed inside the sleeve plate (6), and a rotating part is provided at one end of the pull-out plate (10) away from the sleeve plate (6), and a second locking mechanism is connected between the rotating part where the pull-out plate (10) is located and the connecting block (19), and the second locking mechanism has the same structure as the first locking mechanism.

5. The plate-axis multifunctional chair and stool according to claim 4, Features: The sleeve plate (6) is provided with a limiting groove (11), the internal thread of the limiting groove (11) is connected with a corresponding limiting bolt (12), and the bottom of the limiting bolt (12) is in contact with the upper surface of the pull-out plate (10).

6. The plate-axis multifunctional chair and stool according to claim 1, Features: Support mechanisms are provided on both sides of the first plate (1) to prevent it from tilting forward, and the support mechanisms include two mounting sleeves (13) and a plug-in slot (16) fixed on the top of the corresponding mounting block (7). The two mounting sleeves (13) are rotatably mounted on both sides of the first plate (1) through pin shafts, and a movable rod (14) is slidably mounted inside each mounting sleeve (13). Each mounting sleeve (13) and the movable rod (14) are locked by a locking bolt (17). A plug-in rod (15) is rotatably mounted on the bottom end of each movable rod (14), and the plug-in rod (15) is T-shaped. A groove for limiting the T-shaped portion of the plug-in rod (15) is provided inside the plug-in slot (16).

7. The plate-axis multifunctional chair and stool according to claim 1, Features: The second plate (2) and the third plate (3) are of equal length.

8. A method of converting a stool into a bed structure, Features: The method comprises: S1: When the chair is in the stool state, the plug-in rod (15) is firstly disengaged from the groove inside the plug-in slot (16) through the rotatable plug-in rod (15) on the support mechanism, and the plug-in rod (15) is rotated, so that the plug-in rod (15) can be taken out from the through slot opened at the top of the plug-in slot (16) by changing its direction, and the plug-in rod (15) is rotated to the rear side of the first plate (1); S2: Then, the first locking mechanism between the backrest and the base is released, and the card block (26) is manually pressed so that the card block (26) is disengaged from the card slot (24). At this time, the rotating part where the backrest and the base are located are separated from each other, so that the first plate (1) and the second plate (2) are close to the ground and in an unfolded structure. At this time, the plug rod (15) can provide reverse support for the first plate (1); S3: Similarly, the second locking mechanism where the connecting plate assembly is located is released, and the adjusting and fixing mechanisms arranged on the fourth plate (4) and the third plate (3), and the fourth plate (4) and the fifth plate (5) are manually pressed to make the spring plate (22) at the corresponding position so that the ratchet gear (21) no longer hinders the rotation of the ratchet wheel (23), so that the relative rotation between the fourth plate (4) and the third plate (3), and the fourth plate (4) and the fifth plate (5) can be achieved. At this time, the third plate (3), the fourth plate (4), the fifth plate (5) and the connecting plate assembly are close to the ground and in the same plane, so as to facilitate the formation of a sleeping bed structure; S4: In order to further improve the quality of sleep, an inclination angle can be created between the first plate (1) and the second plate (2). In this case, the first plate (1) is equivalent to a pillow of a bed. Since the adjustment and fixing mechanism provided on the rotating parts of the first plate (1) and the second plate (2) has a one-way self-locking function, the user's head can be supported in cooperation with the reverse support of the plug-in rod (15). At the same time, in order to adapt to the sleeping habits of different people, due to the adjustment and fixing mechanism between the fourth plate (4) and the fifth plate (5), when the opening angle between the fourth plate (4) and the fifth plate (5) is adjusted, the user's legs can be supported.

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