Chair back small table board with angle adjusting function

Abstract

The invention discloses a chair back small table board with an angle adjusting function, which relates to the technical field of vehicle equipment and comprises a mounting plate, a protective cover, a main table board and an auxiliary support. Protective covers are symmetrically arranged on two sides of the mounting plate, and an angle adjusting assembly and a driving mechanism are arranged in the mounting plate. The height of the table board is adjusted by driving the threaded rod through the motor, and the ratchet mechanism is matched with the control arm to achieve 0-90-degree stepless hovering. The auxiliary support is of a U-shaped structure and can be rapidly unfolded through a connecting rod mechanism to form a triangular support, and the bearing stability is remarkably improved. Height adjustment, multi-angle hovering and auxiliary supporting functions are creatively integrated, the modular design is adopted, so that the structure is compact, operation is convenient and fast, the problems that a traditional small table plate for a vehicle is inconvenient to adjust, poor in bearing capacity, prone to shaking and the like are effectively solved, and the small table plate is particularly suitable for use scenes of vehicles such as automobiles and high-speed rails.

Description

Technical Field

[0001] This invention relates to the field of transportation equipment technology, specifically to a small table with an adjustable chair back. Background Technology

[0002] In vehicles such as cars and high-speed trains, seatback tray tables are an important facility providing convenience for passengers, which can be used to place items, eat, or work. However, existing seatback tray tables generally have the following drawbacks:

[0003] 1. Limited adjustment functions: Most small tables only support simple folding and cannot achieve flexible adjustment of height and angle, making it difficult to meet the usage needs of users of different heights;

[0004] 2. Insufficient stability: Traditional tabletops are prone to wobbling when the vehicle is bumpy or when heavy objects are placed on them, and may even accidentally fold up due to inertia, posing a safety hazard.

[0005] 3. Limited load-bearing capacity: Some tabletops lack auxiliary support structures, making them prone to deformation or damage when heavy items (such as laptops) are placed on them;

[0006] 4. Large space occupation: Some adjustable tabletops have complex structures and are quite bulky when folded up, affecting the comfort of the seats.

[0007] Therefore, the present invention provides a small table with an adjustable chair back to solve one or more of the above-mentioned problems. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a small table with an adjustable chair back to solve the problems mentioned in the background section.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the present invention is implemented through the following technical solution, including: a mounting plate, on both sides of the mounting plate are symmetrically mounted protective covers, an angle adjustment component is provided inside the protective cover, one end of the protective shell extends to the protective cover and is connected to the angle adjustment component, and one end of the protective shell is provided with a secondary support.

[0012] Preferably, the outer wall of the mounting plate is provided with a guide groove, the drive motor is fixedly installed in the guide groove, one end of the threaded rod is fixedly connected to the output shaft of the drive motor, and the other end of the threaded rod is rotatably connected to the inner wall of the guide groove.

[0013] Preferably, the protective cover consists of a protective shell and a buckle plate. A threaded sleeve is fixedly provided on the side of the protective shell near the guide groove. The threaded sleeve is movably disposed in the guide groove, and the threaded sleeve is connected to the threaded rod by threads. The buckle plate is snapped into the protective shell.

[0014] Preferably, the main table extends into the protective housing to form a connecting arm, the elastic element is disposed inside the protective housing, and the connecting arm is inserted into the opening of the elastic element.

[0015] Preferably, the angle adjustment assembly includes: a mounting housing, which is fixedly disposed within a protective housing; one end of a connecting shaft extends movably into the mounting housing and is fixedly fitted with a ratchet; and the other end of the connecting shaft is fixedly connected to the connecting arm of the main table.

[0016] Preferably, the drive motor is fixedly installed inside the mounting housing, and a control pusher is fixedly sleeved on the output shaft of the drive motor. A first control arm and a second control arm are symmetrically arranged on both sides of the control pusher.

[0017] Preferably, the fixing block is fixedly disposed inside the mounting housing, and the ends of the first control arm and the second control arm away from the ratchet are both rotatably connected to the fixing block. A return spring one is provided between the first control arm and the inner wall of the mounting housing, and a return spring two is provided between the second control arm and the inner wall of the mounting housing.

[0018] Preferably, both the main table and the secondary support are U-shaped structures. The second connecting shaft is fixed on the side of the main table away from the protective cover. The U-shaped shell of the secondary support has a through hole one and a through hole two. The second connecting shaft is movably inserted into the through hole one, thereby allowing the main table and the secondary support to be rotatably connected.

[0019] Preferably, guide plate one and guide plate two are fixedly fixed on the inner side of the U-shaped shell of the main table. Guide plate one extends obliquely upward to form guide component one, guide plate two extends obliquely upward to form guide component two, and the end of guide plate two away from guide component two extends to form a supporting semi-ring. An avoidance groove is provided on the U-shaped shell of the main table, and the avoidance groove is located between guide plate one and guide plate two.

[0020] Preferably, the two ends of the first connecting rod are rotatably disposed within the through hole two of the auxiliary support, the two ends of the second connecting rod are movably disposed within the support semi-ring, and the second connecting rod can slide along the guide member two through the guide plate two. The first connecting rod and the second connecting rod are connected by a third connecting rod, one end of the third connecting rod is fixedly connected to the first connecting rod, and the other end of the third connecting rod is rotatably connected to the second connecting rod. One end of the return spring three is fixedly connected to the connecting shaft two, and one end of the return spring three is fixedly connected to the second connecting rod.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention achieves height adjustment through a drive motor and threaded rod to adapt to different user needs; it adopts a ratchet mechanism and dual control arms to achieve stepless hovering from 0° to 90°, ensuring the table is stable and preventing it from falling back; the secondary support can be unfolded to form a triangular support structure, enhancing load-bearing capacity and preventing overload damage; the overall structure is compact and easy to store, suitable for confined spaces such as vehicles and airplanes, and features intelligent adjustment, high stability and safety, significantly improving the user experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the external structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the installation position of the threaded sleeve in this invention;

[0026] Figure 4 This is a schematic diagram of the explosion structure of the protective shield in this invention;

[0027] Figure 5 This is a schematic diagram of the external structure of the angle adjustment component in this invention;

[0028] Figure 6 This is a schematic cross-sectional view of the angle adjustment component in this invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the main table panel in this invention;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the secondary support in this invention;

[0031] Figure 9 This is a schematic diagram of the connection between the first link and the second link in this invention;

[0032] Figure 10 This is a schematic diagram of the secondary support deployment structure in this invention.

[0033] In the diagram: 1. Mounting plate; 2. Drive motor; 3. Guide groove; 4. Threaded rod; 5. Protective cover; 6. Main table; 7. Secondary support; 8. Threaded sleeve; 9. Protective housing; 10. Angle adjustment assembly; 11. Connecting arm; 12. Buckle plate; 13. Elastic element; 14. Mounting housing; 15. Connecting shaft one; 16. Ratchet; 17. Drive motor; 18. Control pusher; 19. Fixing block; 20. First control arm; 21. Return spring one; 22. Second control arm; 23. Return spring two; 24. Guide plate one; 25. Guide component one; 26. Support half ring; 27. Guide plate two; 28. Guide component two; 29. ​​Clearance groove; 30. Connecting shaft two; 31. Through hole one; 32. Through hole two; 33. First connecting rod; 34. Second connecting rod; 35. Third connecting rod; 36. Return spring three. Detailed Implementation

[0034] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the invention. They are merely used to distinguish protective components or operations described using the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0035] Example 1

[0036] Please see Figures 1-4 The present invention provides a technical means comprising: a mounting plate 1, on both sides of the mounting plate 1 are symmetrically mounted protective covers 5, the protective covers 5 are provided with an angle adjustment component 10, one end of the protective housing 9 extends to the protective cover 5 and is connected to the angle adjustment component 10, and one end of the protective housing 9 is provided with a secondary support 7.

[0037] Preferably, the outer wall of the mounting plate 1 is provided with a guide groove 3, the drive motor 2 is fixedly installed in the guide groove 3, one end of the threaded rod 4 is fixedly connected to the output shaft of the drive motor 2, and the other end of the threaded rod 4 is rotatably connected to the inner wall of the guide groove 3.

[0038] Preferably, the protective cover 5 is composed of a protective shell 9 and a buckle plate 12. A threaded sleeve 8 is fixedly provided on the side of the protective shell 9 near the guide groove 3. The threaded sleeve 8 is movably disposed in the guide groove 3, and the threaded sleeve 8 is connected to the threaded rod 4 by threads. The buckle plate 12 is snapped into the protective shell 9.

[0039] Preferably, the main table 6 extends into the protective housing 9 to form a connecting arm 11, the elastic element 13 is disposed inside the protective housing 9, and the connecting arm 11 is inserted into the opening of the elastic element 13.

[0040] The working principle and beneficial effects of the above scheme are as follows: In use, the drive motor 2 is started to drive the threaded rod 4 to reciprocate, which in turn causes the threaded sleeve 8 to move up and down along the threaded rod 4, while the protective cover 5 drives the main table 6 to move up and down, thus adapting to people of different heights. When the appropriate height is adjusted, the opening and closing of the main table 6 can be controlled by the angle adjustment component 10, allowing it to hover at any angle (between 0° and 90°) without falling back. Furthermore, when a heavy object is placed on the main table 6, in order to improve the stability of the main table 6 and prevent the heavy object from damaging the main table 6 and the angle adjustment component 10, the secondary support 7 can be opened until the main table 6 and the secondary support 7 form a right angle. At this time, the bottom of the secondary support 7 can support the ground of the vehicle or the user's legs, greatly improving its safety.

[0041] Example 2

[0042] Based on Example 1, please refer to Figures 4-5 The angle adjustment assembly 10 includes: a mounting housing 14, which is fixedly disposed inside the protective housing 9; one end of a connecting shaft 15 extends movably into the mounting housing 14 and is fixedly sleeved with a ratchet 16; the other end of the connecting shaft 15 is fixedly connected to the connecting arm 11 of the main table 6.

[0043] Preferably, the drive motor 17 is fixedly installed inside the mounting housing 14, and a control pusher 18 is fixedly sleeved on the output shaft of the drive motor 17. The control pusher 18 has a first control arm 20 and a second control arm 22 symmetrically arranged on both sides.

[0044] Preferably, the fixing block 19 is fixedly disposed inside the mounting housing 14, and the ends of the first control arm 20 and the second control arm 22 away from the ratchet 16 are rotatably connected to the fixing block 19. A return spring 21 is provided between the first control arm 20 and the inner wall of the mounting housing 14, and a return spring 23 is provided between the second control arm 22 and the inner wall of the mounting housing 14.

[0045] The working principle of the above scheme is as follows: When the main table 6 needs to be unfolded, simply start the drive motor 17 to drive the control pusher 18 to push the first control arm 20 until the tail of the first control arm 20 is no longer in contact with the ratchet 16. At this time, the user can directly lift the main table 6 and rotate it counterclockwise. Since the second control arm 22 is engaged with the ratchet 16 at this time and does not obstruct the connecting shaft 15 from driving the ratchet 16 to rotate counterclockwise, the main table 6 can be suspended at any angle. When the main table 6 needs to be retracted, simply start the drive motor 17 to... The control pusher 18 pushes the second control arm 22 until the tail of the second control arm 22 no longer abuts against the ratchet 16. At the same time, the first control arm 20 is reset under the action of the reset spring 21 and engages with the ratchet 16. At this time, the main table 6 rotates clockwise under the action of gravity. Since the first control arm 20 is engaged with the ratchet 16 and does not block the connecting shaft 15 from driving the ratchet 16 to rotate clockwise, the main table 6 can be retracted and reset to form a lock, which cannot be opened at will (due to the inertia of the vehicle moving / braking, or the child pulling it at will).

[0046] The beneficial effects of the above scheme are as follows:

[0047] 1. Can be suspended at any angle: The ratchet mechanism, in conjunction with the control arm, enables the table to be fixed at multiple angles to meet different usage needs;

[0048] 2. Anti-fall design: When unfolded, the second control arm 22 locks the ratchet to prevent the table from falling back due to gravity; when retracted, the first control arm 20 automatically locks to prevent accidental unfolding.

[0049] 3. Easy to operate: The table can be opened and closed with just a drive motor, without the need for manual adjustment, making it suitable for scenarios such as vehicles;

[0050] 4. Impact resistance: When the vehicle is bumpy or brakes suddenly, the ratchet mechanism can still keep the table stable, improving safety.

[0051] Example 3

[0052] Based on any one of Examples 1-2, please refer to Figures 7-10 Both the main table panel 6 and the secondary support 7 are U-shaped structures. The connecting shaft 2 30 is fixed on the side of the main table panel 6 away from the protective cover 5. The U-shaped shell of the secondary support 7 has a through hole 1 31 and a through hole 2 32. The connecting shaft 2 30 is movably inserted into the through hole 1 31, thereby allowing the main table panel 6 and the secondary support 7 to rotate and connect.

[0053] Preferably, a guide plate 24 and a guide plate 27 are fixedly fixed on the inner side of the U-shaped shell of the main table panel 6. The guide plate 24 extends obliquely upward to form a guide member 25, and the guide plate 27 extends obliquely upward to form a guide member 28. The end of the guide plate 27 away from the guide member 28 extends to form a supporting semi-ring 26. An avoidance groove 29 is provided on the U-shaped shell of the main table panel 6, and the avoidance groove 29 is located between the guide plate 24 and the guide plate 27.

[0054] Preferably, the two ends of the first connecting rod 33 are rotatably disposed in the through hole 32 of the secondary support 7, and the two ends of the second connecting rod 34 are movably disposed in the support half ring 26. The second connecting rod 34 can slide along the guide member 28 through the guide plate 27. The first connecting rod 33 and the second connecting rod 34 are connected by a third connecting rod 35. One end of the third connecting rod 35 is fixedly connected to the first connecting rod 33, and the other end of the third connecting rod 35 is rotatably connected to the second connecting rod 34. One end of the return spring 36 is fixedly connected to the connecting shaft 30, and the other end of the return spring 36 is fixedly connected to the second connecting rod 34.

[0055] The working principle of the above scheme is as follows: In order to improve the stability of the main table 6 and prevent heavy objects from damaging the main table 6 and the angle adjustment component 10 during use, the auxiliary support 7 can be pulled down directly, so that the auxiliary support 7 extends from the bottom of the main table 6 and rotates counterclockwise around the connecting shaft 30 until the main table 6 and the auxiliary support 7 form a right angle. At this time, the bottom of the auxiliary support 7 can support the ground of the vehicle or the user's legs.

[0056] When the secondary support 7 is deployed in the above manner, both ends of the second connecting rod 34 are located within the support semi-ring 26. Due to the "hook" shape of the support semi-ring 26, the second connecting rod 34 will not slip. At this time, the second connecting rod 34, the third connecting rod 35, and the first connecting rod 33 form a support between the main tabletop 6 and the secondary support 7, greatly improving the stability of the main tabletop 6. When it is necessary to retract the secondary support 7, simply continue to rotate the secondary support 7 until the angle between the secondary support 7 and the main tabletop 6 is greater than 90 degrees (the return spring 36 is stretched at this time). Then, the second connecting rod 34 moves from the support semi-ring 26 to between the guide plate 27 and the bottom of the main tabletop 6. At this point, simply rotate the secondary support 7 clockwise to retract it into the main tabletop 6. Simultaneously, the second link 34 slides along the top of the guide plate 27 and the guide member 28 (i.e., the gap between the guide plate 27 and the guide member 28 and the bottom of the main table 6) until the secondary support 7 is fully closed into the main table 6. At this point, the second link 34 is at the tail of the guide member 28, waiting for the next opening (when opening, the second link 34 slides along the bottom of the guide member 28 and the guide plate 27 until it enters the support half ring 26). When the secondary support 7 is retracted into the main table 6, the clearance groove 29 is used for the placement of the first link 33, so that the secondary support 7 can be fully retracted into the main table 6. The guide member 25 is set to guide and support the first link 33.

[0057] The beneficial effects of the above scheme are as follows:

[0058] 1. Quick unfolding / storage: Simply pull down the secondary support to unfold, and continue rotating to automatically retract. It is easy to operate.

[0059] 2. Enhanced stability: The triangular support structure significantly improves load-bearing capacity, making it suitable for placing heavy objects.

[0060] 3. Space optimization: The U-shaped nested design allows the secondary support to be fully embedded in the main tabletop, saving space.

[0061] 4. Anti-locking design: The support semi-ring 26 and guide part 28 ensure the stability of the linkage mechanism's movement trajectory and avoid jamming or failure.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A small table with an adjustable chair back, characterized in that, Includes: a mounting plate (1), on which protective covers (5) are symmetrically mounted on both sides, an angle adjustment component (10) is provided inside the protective cover (5), one end of the protective housing (9) extends to the protective cover (5) and is connected to the angle adjustment component (10), and one end of the protective housing (9) is provided with a secondary support (7).

2. The chair back table with angle adjustment function according to claim 1, characterized in that, The mounting plate (1) has a guide groove (3) on its outer wall. The drive motor (2) is fixedly installed in the guide groove (3). One end of the threaded rod (4) is fixedly connected to the output shaft of the drive motor (2), and the other end of the threaded rod (4) is rotatably connected to the inner wall of the guide groove (3).

3. A chair back table with angle adjustment function according to claim 2, characterized in that, The protective cover (5) consists of a protective shell (9) and a buckle plate (12). A threaded sleeve (8) is fixedly provided on the side of the protective shell (9) near the guide groove (3). The threaded sleeve (8) is movably located in the guide groove (3), and the threaded sleeve (8) is connected to the threaded rod (4) by threads. The buckle plate (12) is snapped into the protective shell (9).

4. A chair back table with angle adjustment function according to claim 3, characterized in that, The main table (6) extends into the protective housing (9) to form a connecting arm (11), and the elastic element (13) is located inside the protective housing (9), with the connecting arm (11) inserted into the opening of the elastic element (13).

5. A chair back table with angle adjustment function according to claim 4, characterized in that, The angle adjustment assembly (10) includes: a mounting housing (14), which is fixedly installed inside the protective housing (9), one end of a connecting shaft (15) extends movably into the mounting housing (14) and is fixedly fitted with a ratchet (16), and the other end of the connecting shaft (15) is fixedly connected to the connecting arm (11) of the main table (6).

6. A chair back table with angle adjustment function according to claim 5, characterized in that, The drive motor (17) is fixedly installed inside the mounting housing (14), and a control pusher (18) is fixedly sleeved on the output shaft of the drive motor (17). The control pusher (18) has a first control arm (20) and a second control arm (22) symmetrically arranged on both sides.

7. A chair back table with angle adjustment function according to claim 6, characterized in that, The fixing block (19) is fixedly installed inside the mounting housing (14), and the ends of the first control arm (20) and the second control arm (22) away from the ratchet (16) are rotatably connected to the fixing block (19). A return spring one (21) is provided between the first control arm (20) and the inner wall of the mounting housing (14), and a return spring two (23) is provided between the second control arm (22) and the inner wall of the mounting housing (14).

8. A chair back table with angle adjustment function according to claim 5, characterized in that, Both the main table (6) and the secondary support (7) are U-shaped structures. The connecting shaft (2) (30) is fixed on the side of the main table (6) away from the protective cover (5). The U-shaped shell of the secondary support (7) has a through hole (31) and a through hole (2) (32). The connecting shaft (2) (30) is inserted into the through hole (31) so that the main table (6) and the secondary support (7) are rotatably connected.

9. A chair back table with angle adjustment function according to claim 8, characterized in that, Guide plate one (24) and guide plate two (27) are fixedly installed on the inner side of the U-shaped shell of the main table (6). Guide plate one (24) extends obliquely upward to form guide component one (25), and guide plate two (27) extends obliquely upward to form guide component two (28). One end of guide plate two (27) away from guide component two (28) extends to form a supporting semi-ring (26). A clearance groove (29) is provided on the U-shaped shell of the main table (6), and the clearance groove (29) is located between guide plate one (24) and guide plate two (27).

10. A chair back table with angle adjustment function according to claim 9, characterized in that, The first link (33) is rotatably disposed at both ends in the through hole (32) of the secondary support (7), the second link (34) is movably disposed at both ends in the support half ring (26), and the second link (34) can slide along the guide member (28) through the guide plate (27). The first link (33) and the second link (34) are connected by the third link (35), and one end of the third link (35) is fixedly connected to the first link (33), and the other end of the third link (35) is rotatably connected to the second link (34). One end of the return spring (36) is fixedly connected to the connecting shaft (30), and one end of the return spring (36) is fixedly connected to the second link (34).

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