A tabletop connection structure

Abstract

The present invention provides a tabletop connection structure, comprising: the tabletop is pivotally connected to the body in a vertically flipable manner; a control structure is arranged between the tabletop and the body; the control structure includes: a control block and a control pin; one end of the control block is pivotally connected to the tabletop through a first pivot shaft in a swingable manner; the inner end of the control pin is inserted into the other end of the control block; ratchet teeth are arranged on the control block between the first pivot shaft and the control pin; in a cross-section, the ratchet teeth, the first pivot shaft and the control pin are arranged in a triangular shape as a whole. Through the triangular support structure, the tabletop is flipped upward to the horizontal position to achieve a stable use function. At the same time, the foldable tabletop not only increases the use area of the tabletop but also saves the storage space of the tabletop during storage, improves the utilization rate of the vehicle interior space, has a compact structure and is convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and more particularly to a table connection structure. Background Art

[0002] With the gradual increase in the popularity of automobiles, the demand for automotive interior products has also increased. Nowadays, many automobiles are equipped with small folding storage racks on the backs of rear seats. When not in use, they are embedded in the seat backs, and when in use, they are flipped open. However, this arrangement takes up the space of the rear seats, and it is very inconvenient to operate sideways when in use. Therefore, there is an urgent need to develop a table that is convenient to use, does not take up much seat space, and is stable and reliable to meet the user's needs. Summary of the Invention

[0003] The purpose of the present invention is to provide a table connection structure to solve at least one of the above technical problems existing in the prior art.

[0004] To solve the above technical problems, a table connection structure provided by the present invention includes: a body and a table.

[0005] The table is pivotally connected to the body so as to be turned up and down.

[0006] A control structure is provided between the table and the body.

[0007] The control structure includes: a control block and a control pin.

[0008] One end of the control block is pivotally connected to the table through a first pivot shaft so as to be swingable; the inner end of the control pin is inserted into the other end of the control block; ratchet teeth are provided on the control block between the first pivot shaft and the control pin; in a cross-section, the ratchet teeth, the first pivot shaft, and the control pin are arranged in a triangular shape as a whole.

[0009] A first trajectory control surface and a tooth structure adapted to the ratchet teeth are provided on the body; a card slot is provided on the first trajectory control surface.

[0010] During the process of lifting the table, the control block moves relative to the body, and the outer circumferential surface of the outer end of the control pin abuts against the first trajectory control surface and moves along the first trajectory control surface.

[0011] When the tabletop is lifted to a set angle, the outer end of the control pin is snapped into the card slot, and the ratchet teeth on the control block mesh with the tooth structure on the body. The meshing structure between the ratchet teeth and the tooth structure, the clamping structure between the control pin and the card slot, and the first pivot shaft form a triangular support structure, which is used to prevent the control block from moving when the tabletop tends to fall, and then support the tabletop through the control block to prevent the tabletop from falling under pressure.

[0012] Further, the body further includes a second trajectory control surface, a lower trajectory conversion control surface, and an upper trajectory conversion control surface;

[0013] Both the first trajectory control surface and the second trajectory control surface are strip-shaped trajectory surfaces; the lower trajectory conversion control surface and the upper trajectory conversion control surface are respectively arranged at both ends of the first trajectory control surface and the second trajectory control surface, and are simultaneously connected to the first trajectory control surface and the second trajectory control surface.

[0014] Overall, the lower trajectory conversion control surface, the first trajectory control surface, the upper trajectory conversion control surface, and the second trajectory control surface form an annular control trajectory; as the tabletop repeatedly swings up and down, the outer end of the control pin moves cyclically along the set direction on this annular control trajectory.

[0015] In this application, the lower end refers to the end where the control pin is located when the tabletop falls to the lower limit position, and the upper end refers to the end where the control pin is located when the tabletop is lifted to the upper limit position.

[0016] Further, the body is provided with a strip-shaped sunk platform on the outer edge of the second trajectory control surface, and the bottom surface of the sunk platform is the first trajectory control surface; the side surface of the sunk platform (the upper and lower sides of the side surface are respectively connected to the second trajectory control surface and the first trajectory control surface) is the third trajectory control surface.

[0017] Further, a first spring is further included. The first spring is arranged between the control block and the control pin and tends to force the control pin to extend outwards (specifically, tend to extend towards the second trajectory control surface side);

[0018] During the process of lifting the tabletop from the bottom, the outer circular surface of the outer end of the control pin abuts against the first trajectory control surface, and the outer end of the control end (specifically, the end surface of the outer end) abuts against the third trajectory control surface under the action of the first spring at the same time;

[0019] When the tabletop continues to lift after exceeding the set angle, the outer end of the control pin slides out of the first trajectory control surface and slides into the upper end trajectory conversion control surface, and the ratchet teeth disengage from the tooth structure; the control pin extends under the action of the first spring and axially disengages from the third trajectory control surface on the control pin.

[0020] When the tabletop falls from above, the outer end of the control pin slides out of the upper end trajectory conversion control surface and slides onto the second trajectory control surface; the outer circular surface of the outer end of the control pin abuts against the second trajectory control surface, which is used to keep the ratchet teeth and the tooth structure in a non-engaged state during the falling process of the tabletop.

[0021] When the tabletop falls and the control block moves accordingly, the outer end of the control pin slides out of the lower end of the second trajectory control surface and then slides into the lower end trajectory conversion control surface.

[0022] Preferably, the control pin is arranged in a pin hole on the control block, and the first spring is arranged in the pin hole, with both ends respectively abutting against the inner end face of the control pin and the bottom surface of the pin hole.

[0023] Further, when the tabletop is lifted upward from the lower limit position, the outer end of the control pin gradually slides out of the lower end trajectory conversion control surface and slides into the first trajectory control surface.

[0024] The lower end of the third trajectory control surface extends obliquely toward the second trajectory control surface, thereby covering the lower end of the second trajectory control surface, thereby preventing the outer end of the control pin from sliding into the second trajectory control surface when sliding out of the lower end trajectory conversion control surface.

[0025] Further, a second spring is further included. Both ends of the second spring are respectively connected to the control block and the tabletop. The second spring tends to force the control block to swing, and the outer circular surface of the outer end of the control pin abuts against the first trajectory control surface, the second trajectory control surface, the lower end trajectory conversion control surface or the upper end trajectory conversion control surface.

[0026] Theoretically, the weight of the control block itself can be relied on to force the control pin to always remain in contact with the annular control trajectory, so as to control the swing angle of the control block and realize functions such as locking, supporting and unlocking and falling of the tabletop; and by setting the second spring, the control structure is made more stable, avoiding the control pin from disengaging from the annular control trajectory due to interference factors such as vehicle bumps and vibrations.

[0027] Preferably, the cross-sectional shape of the card slot is integrally arranged in a ratchet tooth groove shape, which is used to enable the control pin to pass through the card slot unidirectionally.

[0028] That is, the control pin can only pass through the card slot when sliding upward from bottom to top, while the control pin is locked in the card slot when sliding downward from top to bottom and cannot move further.

[0029] Further, a damping structure is provided between the tabletop and the body for achieving hovering of the tabletop during the swinging process.

[0030] There are many forms of damping structures. For example, friction plates are provided on the tabletop or the body, and the other ends of the friction plates abut against the body or the tabletop, and the friction resistance is used to achieve hovering of the tabletop at any angle.

[0031] Wherein, the body is a mounting bracket, a seat frame or a vehicle frame, etc.

[0032] Further, the tabletop includes a swing arm and a table board;

[0033] The table board is swingably arranged on the body through the swing arm;

[0034] The swing arm is swingably arranged on the body through a second pivot shaft.

[0035] Further, the table board further includes a main board and a sub-board;

[0036] The bottom surface of the main board is fixedly connected to the swing arm;

[0037] The sub-boards are symmetrically and flipably arranged on both sides of the main board;

[0038] The two sub-boards can be flipped inwards by 180° to fit the upper surface of the main board or flipped outwards by 180° to be opened flush with the upper surface of the main board.

[0039] Preferably, a locking structure is further included for locking the sub-board after it is opened and having a load-bearing capacity. The locking structure can adopt the prior art and will not be elaborated herein.

[0040] Further, a damping structure is provided between the main board and the sub-board.

[0041] The foldable sub-boards reduce the space occupied when the tabletop is closed, improving the space utilization rate; at the same time, the use area of the tabletop is increased after the sub-boards are opened. The setting of the damping structure enables the sub-boards not to fall freely during the opening and closing processes.

[0042] Preferably, a covering assembly is further included; the covering assembly is fixedly connected to the body, the tabletop and the control block respectively for covering the exposed surfaces of the components.

[0043] The covering assembly can not only prevent dust and sundries from falling into the body, but also make the overall structure more beautiful and tidy.

[0044] Further, a shock-absorbing pin is provided at the bottom of the control block. The shock-absorbing pin is telescopically inserted into the mounting hole on the control block. A third spring is arranged in the mounting hole, and the third spring tends to force the shock-absorbing pin to extend out.

[0045] The main body is provided with a guiding surface on the moving path of the shock-absorbing pin.

[0046] When the tabletop is lifted and the control pin passes through the card slot, the shock-absorbing pin abuts against the guiding surface under the action of the third spring, so as to avoid shock absorption and noise reduction during the process of the control pin falling into the card slot.

[0047] As the above card slot is in the form of a ratchet tooth slot, when the control pin passes through the card slot from bottom to top, under the action of the second spring, the control pin will hit the bottom surface of the card slot when it falls into the card slot, forming relatively large vibration and noise. The setting of the shock-absorbing pin is that before the control pin touches the bottom surface of the card slot, the shock-absorbing pin first abuts against the guiding surface, and the elastic force of the second spring is greater than that of the third spring, so as to avoid the control pin directly hitting the bottom of the card slot while realizing the clamping connection between the control pin and the card slot.

[0048] Specifically, when the tabletop is lifted upward, the tabletop is rotated counterclockwise. Through the dragging of the first pivot shaft and the energy storage of the second spring under pressure, the control block drives the control pin to move along the lower end trajectory conversion control surface. When the outer end face of the control pin abuts against the third trajectory control surface, the first spring is compressed to store energy and forces the control pin to abut against the third trajectory control surface. At the same time, the outer cylindrical surface of the outer end of the control pin abuts against the first trajectory control surface. When the control pin moves to the card slot, the shock-absorbing pin abuts against the guiding surface, guiding the control pin to fall downward into the card slot, and the ratchet teeth mesh downward with the tooth structure, forming stable locking and support for the tabletop. At this time, the tabletop rotates 120° counterclockwise from the closed state, and the tabletop opens and closes to the horizontal position. When it is necessary to close the tabletop, continue to lift the tabletop counterclockwise. When the tabletop rotates from the horizontal position to 10°, the outer end of the control pin slides out of the first trajectory control surface and slides into the upper end trajectory conversion control surface, and the ratchet teeth disengage from the tooth structure, unlocking the tabletop. The control pin extends under the action of the first spring and at the same time disengages from the third trajectory control surface. At this time, rotate the tabletop clockwise, and the outer end of the control pin slides out of the upper end trajectory conversion control surface and slides onto the second trajectory control surface. When the outer end of the control pin slides out of the lower end of the second trajectory control surface and slides into the lower end trajectory conversion control surface. At this time, if the tabletop is rotated counterclockwise, the tabletop can be continuously lifted to the horizontal position; if the tabletop is continuously rotated clockwise, the tabletop can be closed to the initial state.

[0049] Adopting the above technical solution, the present invention has the following beneficial effects:

[0050] A tabletop connection structure provided by the present invention has the following advantages:

[0051] 1. A triangular support structure is formed by the meshing structure of the ratchet teeth and the tooth structure, the clamping structure between the control pin and the clamping groove, and the first pivot shaft, enabling the tabletop to be turned upward to the horizontal position to achieve a stable usage function.

[0052] 2. The opened auxiliary board increases the usage area of the tabletop; when not in use, the auxiliary board can be folded in half and attached to the upper surface of the main board, and can be turned downward and closed together with the main board, saving the storage space of the tabletop, improving the utilization rate of the vehicle interior space, with a compact structure and convenient operation.

[0053] 3. The setting of the shock-absorbing pin in this structure prevents the control pin from directly hitting the bottom of the clamping groove, increasing the service life of the parts and reducing noise at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0055] Figure 1 A schematic diagram of a tabletop connection structure provided by an embodiment of the present invention after the tabletop is closed;

[0056] Figure 2 A schematic diagram of a tabletop connection structure provided by an embodiment of the present invention after the tabletop is turned over and opened;

[0057] Figure 3 For Figure 1 An assembled three-dimensional view of the device shown after removing the covering member;

[0058] Figure 4 For Figure 1 A three-dimensional view of the control structure of the device shown;

[0059] Figure 5 For Figure 1 Another three-dimensional view of the control structure of the device shown;

[0060] Figure 6 For Figure 1 A three-dimensional view of the device body shown;

[0061] Figure 7 For Figure 1 An assembled three-dimensional view of the device body and the control structure shown;

[0062] Figure 8 For Figure 7 An enlarged view of part A in

[0063] Figure 9 ForFigure 1 Stereoscopic assembly drawing of the shown device body and the control pin;

[0064] Figure 10 For Figure 9 Enlarged view at position B in

[0065] Figure 11 For Figure 1 Stereoscopic assembly drawing of the second spring of the shown device;

[0066] Figure 12 For Figure 11 Enlarged view at position C in

[0067] Figure 13 For Figure 1 Stereoscopic assembly drawing of the table board of the shown device;

[0068] Figure 14 For Figure 1 Stereoscopic drawing of the closing and resetting of the covering part and the table board of the shown device.

[0069] Reference numerals:

[0070] 10 - body; 11 - first track control surface; 111 - card slot; 12 - tooth structure; 13 - second track control surface; 14 - lower track conversion control surface; 15 - upper track conversion control surface; 16 - third track control surface; 17 - guiding surface; 20 - table board; 21 - swing arm; 22 - main board; 23 - sub - board; 24 - second pivot shaft; 30 - control structure; 31 - control block; 311 - ratchet teeth; 312 - pin hole; 32 - control pin; 33 - first pivot shaft; 34 - first spring; 35 - second spring; 36 - shock absorption pin; 40 - covering assembly; 50 - small storage box. Detailed implementation manners

[0071] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0072] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0073] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] The following further explains and illustrates the present invention in conjunction with specific embodiments.

[0075] As Figure 1-2 shown, a tabletop connection structure provided in this embodiment is characterized by including: a main body 10 and a tabletop 20;

[0076] The tabletop 20 is pivotally connected to the main body 10 so as to be turnable up and down.

[0077] As Figure 3 shown, a control structure 30 is provided between the tabletop 20 and the main body 10;

[0078] As Figure 4 shown, the control structure 30 includes: a control block 31 and a control pin 32;

[0079] One end of the control block 31 is pivotally connected to the tabletop 20 through a first pivot shaft 33 so as to be swingable; the inner end of the control pin 32 is inserted into the other end of the control block 31; ratchet teeth 311 are provided on the control block 31 between the first pivot shaft 33 and the control pin 32; in a cross-section, the ratchet teeth 311, the first pivot shaft 33, and the control pin 32 are arranged in a triangular shape as a whole;

[0080] As Figure 6 shown, a first track control surface 11 and a tooth structure 12 adapted to the ratchet teeth 311 are provided on the main body 10; a card slot 111 is provided on the first track control surface 11;

[0081] During the process of lifting the tabletop 20, the control block 31 moves relative to the main body 10, and the outer circumferential surface of the outer end of the control pin 32 abuts against the first track control surface 11 and moves along the first track control surface 11;

[0082] When the tabletop 20 is lifted to a set angle, the outer end of the control pin 32 is snapped into the card slot 111, and the ratchet teeth 311 on the control block 31 are engaged with the tooth structure 12 on the body 10. The engagement structure between the ratchet teeth 311 and the tooth structure 12, the snap connection structure between the control pin 32 and the card slot 111, and the first pivot shaft 33 form a triangular support structure, which is used to prevent the control block 31 from moving when the tabletop 20 tends to fall, and then support the tabletop 20 through the control block 31 to prevent the tabletop 20 from falling under pressure.

[0083] In this embodiment, the tabletop 20 is fixedly installed at the rear of the small storage box 50 between the driver's seat and the passenger seat in the cab of the vehicle through the body 10.

[0084] The body 10 further includes a second track control surface 13, a lower track conversion control surface 14, and an upper track conversion control surface 15;

[0085] Both the first track control surface 11 and the second track control surface 13 are long strip-shaped track surfaces; the lower track conversion control surface 14 and the upper track conversion control surface 15 are respectively arranged at both ends of the first track control surface 11 and the second track control surface 13, and are simultaneously connected to the first track control surface 11 and the second track control surface 13.

[0086] Refer to Figure 8 As shown, overall, the lower track conversion control surface 14, the first track control surface 11, the upper track conversion control surface 15, and the second track control surface 13 form an annular control track; as the tabletop 20 repeatedly swings up and down, the outer end of the control pin 32 moves cyclically along the set direction on this annular control track.

[0087] In this application, the lower end refers to the end where the control pin 32 is located when the tabletop 20 falls to the lower limit position, and the upper end refers to the end where the control pin 32 is located when the tabletop 20 is lifted to the upper limit position.

[0088] The body 10 is provided with a long strip-shaped sunk platform on the outer edge of the second track control surface 13, and the bottom surface of the sunk platform is the first track control surface 11; the side surface of the sunk platform (the upper and lower sides of the side surface are respectively connected to the second track control surface 13 and the first track control surface 11) is the third track control surface 16.

[0089] Refer to Figure 4 、 Figure 10 As shown, it further includes a first spring 34. The first spring 34 is arranged between the control block 31 and the control pin 32, and tends to force the control pin 32 to extend outwards (specifically, tends to extend towards the second track control surface 13 side);

[0090] During the process of lifting the tabletop 20 from the bottom, the outer cylindrical surface of the outer end of the control pin 32 abuts against the first trajectory control surface 11, and the outer end of the control end (specifically, the end face of the outer end) abuts against the third trajectory control surface 16 under the action of the first spring 34 at the same time;

[0091] When the tabletop 20 continues to be lifted after exceeding the set angle, the outer end of the control pin 32 slides out of the first trajectory control surface 11 and slides into the upper end trajectory conversion control surface 15, and the ratchet teeth 311 disengage from the tooth structure 12; the control pin 32 extends under the action of the first spring 34, and axially disengages from the third trajectory control surface 16 on the control pin 32;

[0092] When the tabletop 20 falls from above, the outer end of the control pin 32 slides out of the upper end trajectory conversion control surface 15 and slides onto the second trajectory control surface 13; the outer cylindrical surface of the outer end of the control pin 32 abuts against the second trajectory control surface 13, which is used to keep the ratchet teeth 311 and the tooth structure 12 in a non-engaged state during the falling process of the tabletop 20;

[0093] When the tabletop 20 falls and the control block 31 moves accordingly, the outer end of the control pin 32 slides out of the lower end of the second trajectory control surface 13 and then slides into the lower end trajectory conversion control surface 14.

[0094] Preferably, the control pin 32 is arranged in the pin hole 312 on the control block 31, and the first spring 34 is arranged in the pin hole 312, with both ends respectively abutting against the inner end face of the control pin 32 and the bottom surface of the pin hole 312.

[0095] When the tabletop 20 is lifted upward from the lower limit position, the outer end of the control pin 32 gradually slides out of the lower end trajectory conversion control surface 14 and slides into the first trajectory control surface 11;

[0096] The lower end of the third trajectory control surface 16 extends obliquely towards the second trajectory control surface 13, thereby covering the lower end of the second trajectory control surface 13, thereby preventing the outer end of the control pin 32 from sliding into the second trajectory control surface 13 when sliding out of the lower end trajectory conversion control surface 14.

[0097] Refer to Figure 5 、 Figure 11 As shown, it further includes a second spring 35. Both ends of the second spring 35 are respectively connected to the control block 31 and the tabletop 20. The second spring 35 tends to force the control block 31 to swing, and the outer cylindrical surface of the outer end of the control pin 32 abuts against the first trajectory control surface 11, the second trajectory control surface 13, the lower end trajectory conversion control surface 14 or the upper end trajectory conversion control surface 15.

[0098] Theoretically, it is possible to rely on the self-weight of the control block 31 to force the control pin 32 to always remain in contact with the annular control track, thereby achieving the control of the swing angle of the control block 31 and realizing functions such as locking, supporting, and unlocking and dropping of the table board 20; and by setting the second spring 35, the control structure 30 is made more stable, avoiding the control pin 32 from disengaging from the annular control track due to interference factors such as vehicle bumps and vibrations.

[0099] Preferably, the cross-sectional shape of the card slot 111 is integrally arranged in a ratchet tooth groove shape for enabling the control pin 32 to pass through the card slot 111 unidirectionally.

[0100] That is, the control pin 32 can only pass through the card slot 111 when sliding upward from bottom to top, while the control pin 32 is locked in the card slot 111 when sliding downward from top to bottom and cannot move further.

[0101] A damping structure is provided between the table board 20 and the main body 10 for realizing the hovering of the table board 20 during the swinging process.

[0102] There are many forms of damping structures. For example, friction plates are provided on the table board 20 or the main body 10, and the other ends of the friction plates abut against the main body 10 or the table board 20, and the hovering of the table board 20 at any angle is realized by using the frictional resistance.

[0103] Among them, the main body 10 is a mounting frame, a seat frame or a vehicle frame, etc.

[0104] Such as Figure 13 As shown, the table board 20 includes a swing arm 21 and a table top;

[0105] The table top is swingably arranged on the main body 10 through the swing arm 21;

[0106] The swing arm 21 is swingably arranged on the main body 10 through the second pivot shaft 24.

[0107] The table top further includes a main board 22 and a sub-board 23;

[0108] The bottom surface of the main board 22 is fixedly connected to the swing arm 21;

[0109] The sub-boards 23 are symmetrically and flipably arranged on both sides of the main board 22;

[0110] The two sub-boards 23 can be flipped inward by 180° to fit the upper surface of the main board 22 or flipped outward by 180° to open to be flush with the upper surface of the main board 22.

[0111] Preferably, a locking structure is further included for locking and having a bearing capacity after the sub-boards 23 are opened. The locking structure can adopt the prior art and will not be elaborated here.

[0112] A damping structure is provided between the main board 22 and the sub-boards 23.

[0113] The foldable secondary board 23 reduces the space occupied when the table board 20 is closed, improving space utilization; at the same time, when the secondary board 23 is opened, it increases the usable area of the table board 20. The damping structure is provided so that the secondary board 23 does not free fall during the opening and closing processes.

[0114] As Figure 14 shown, it further includes a covering assembly 40; the covering assembly 40 is fixedly connected to the body 10, the table board 20, and the control block 31 respectively, and is used to cover the exposed surfaces of the components.

[0115] The covering assembly 40 can not only prevent dust and debris from falling into the body 10, but also make the overall structure more beautiful and tidy.

[0116] As Figure 5 shown, a shock-absorbing pin 36 is provided at the bottom of the control block 31, and the shock-absorbing pin 36 is telescopically inserted into the mounting hole on the control block 31; a third spring is provided in the mounting hole, and the third spring tends to force the shock-absorbing pin 36 to extend;

[0117] As Figure 6 shown, a guiding surface 17 is provided on the body 10 along the moving path of the shock-absorbing pin 36;

[0118] When the table board 20 is lifted and the control pin 32 passes through the card slot 111, the shock-absorbing pin 36 abuts against the guiding surface 17 under the action of the third spring (not shown), so as to avoid shock and noise reduction during the process of the control pin 32 falling into the card slot 111.

[0119] As the above-mentioned card slot 111 is in the form of a ratchet tooth groove, when the control pin 32 passes through the card slot 111 from bottom to top, under the action of the second spring 35, the control pin 32 falling into the card slot 111 will hit the bottom surface of the card slot 111, forming a large vibration and noise. The setting of the shock-absorbing pin 36 is that before the control pin 32 touches the bottom surface of the card slot 111, the shock-absorbing pin 36 first abuts against the guiding surface 17, and the elastic force of the second spring 35 is greater than the elastic force of the third spring (not shown), so as to realize the clamping connection between the control pin 32 and the card slot 111 while avoiding the control pin 32 directly hitting the bottom of the card slot 111.

[0120] Specifically, when the tabletop 20 is lifted upward, the tabletop 20 is rotated counterclockwise. The dragging of the first pivot shaft 33 and the energy storage under pressure of the second spring 35 force the control block 31 to drive the control pin 32 to move along the lower track conversion control surface 14. When the outer end face of the control pin 32 abuts against the third track control surface 16, the first spring 34 is compressed to store energy and forces the control pin 32 to abut against the third track control surface 16. At the same time, the outer cylindrical surface of the outer end of the control pin 32 abuts against the first track control surface 11. When the control pin 32 moves to the card slot 111, the shock-absorbing pin 36 abuts against the guiding surface 17, guiding the control pin 32 to fall downward into the card slot 111, and the ratchet teeth 311 mesh downward with the tooth structure 12, forming stable locking and support for the tabletop 20. At this time, the tabletop 20 rotates counterclockwise by 120° from the closed state, and the tabletop 20 is opened to the horizontal position. When it is necessary to close the tabletop 20, the tabletop 20 is continuously lifted counterclockwise. When the tabletop 20 rotates from the horizontal position to 10°, the outer end of the control pin 32 slides out of the first track control surface 11 and slides into the upper track conversion control surface 15, and the ratchet teeth 311 disengage from the tooth structure 12, unlocking the tabletop 20. The control pin 32 extends under the action of the first spring 34 and simultaneously disengages from the third track control surface 16. At this time, the tabletop 20 is rotated clockwise, and the outer end of the control pin 32 slides out of the upper track conversion control surface 15 and slides onto the second track control surface 13. When the outer end of the control pin 32 slides out of the lower end of the second track control surface 13 and slides into the lower track conversion control surface 14. At this time, if the tabletop 20 is rotated counterclockwise, the tabletop 20 can be continuously lifted to the horizontal position; if the tabletop 20 is continuously rotated clockwise, the tabletop 20 can be closed to the initial state.

[0121] Adopting the above technical solution, the present invention has the following beneficial effects:

[0122] A tabletop connection structure provided by the present invention has the following advantages:

[0123] 1. Through the meshing structure of the ratchet teeth and the tooth structure, the clamping structure between the control pin and the card slot, and the first pivot shaft, a triangular support structure is formed to enable the tabletop to be turned upward to the horizontal position to achieve a stable use function.

[0124] 2. The opened secondary board increases the usable area of the tabletop; when not in use, the secondary board is folded in half and attached to the upper surface of the main board, and can be turned downward and closed with the main board, saving the storage space of the tabletop, improving the utilization rate of the vehicle interior space, having a compact structure and convenient operation.

[0125] 3. The setting of the shock-absorbing pin in this structure avoids the control pin directly hitting the bottom of the card slot, improving the service life of the parts and reducing the noise at the same time.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tabletop connection structure, characterized in that, Comprising: A body and a tabletop; The tabletop is pivotally connected to the body so as to be turnable up and down; A control structure is provided between the tabletop and the body; The control structure includes: a control block and a control pin; One end of the control block is pivotally connected to the tabletop by a first pivot shaft so as to be swingable; the inner end of the control pin is inserted into the other end of the control block; ratchet teeth are provided on the control block between the first pivot shaft and the control pin; in cross-section, the ratchet teeth, the first pivot shaft and the control pin are arranged in a triangular shape as a whole; A first track control surface is provided on the body, and a tooth structure adapted to the ratchet teeth; a card slot is provided on the first track control surface; During the process of lifting the tabletop, the control block moves relative to the body, and the outer circumferential surface of the outer end of the control pin abuts against the first track control surface and moves along the first track control surface; When the tabletop is lifted to a set angle, the outer end of the control pin is snapped into the card slot, and the ratchet teeth on the control block are engaged with the tooth structure on the body; the engagement structure between the ratchet teeth and the tooth structure, the snap connection structure between the control pin and the card slot, and the first pivot shaft form a triangular support structure for preventing the control block from moving when the tabletop tends to fall, and then supporting the tabletop through the control block to prevent the tabletop from falling under the action of pressure; The body further includes a second track control surface, a lower track conversion control surface and an upper track conversion control surface; Both the first track control surface and the second track control surface are strip-shaped track surfaces; the lower track conversion control surface and the upper track conversion control surface are respectively arranged at both ends of the first track control surface and the second track control surface, and are simultaneously connected to the first track control surface and the second track control surface; The body is provided with a strip-shaped sunk platform on the outer edge of the second track control surface, the bottom surface of the sunk platform is the first track control surface; the side surface of the sunk platform is the third track control surface; It further includes a first spring, and the first spring is arranged between the control block and the control pin and tends to force the control pin to extend outwards; During the process of lifting the tabletop from the bottom, the outer circumferential surface of the outer end of the control pin abuts against the first track control surface, and the end surface of the outer end of the control pin abuts against the third track control surface under the action of the first spring at the same time; A damping structure is provided between the tabletop and the body for realizing the hover of the tabletop during the swinging process.

2. The tabletop connection structure according to claim 1, wherein, When the tabletop continues to be lifted after exceeding the set angle, the outer end of the control pin slides out of the first track control surface and slides into the upper track conversion control surface, and the ratchet teeth are disengaged from the tooth structure; the control pin extends out under the action of the first spring, and axially disengages from the third track control surface; When the tabletop falls from above, the outer end of the control pin slides out of the upper trajectory conversion control surface and slides onto the second trajectory control surface; the outer circumferential surface of the outer end of the control pin abuts against the second trajectory control surface, which is used to keep the ratchet teeth and the tooth structure in a non-engaged state during the falling process of the tabletop. When the tabletop falls and the control block moves accordingly, the outer end of the control pin slides out of the lower end of the second trajectory control surface and then slides onto the lower trajectory conversion control surface.

3. The tabletop connection structure according to claim 2, characterized in that, The control pin is arranged in the pin hole on the control block, and the first spring is arranged in the pin hole, with both ends respectively abutting against the inner end face of the control pin and the bottom surface of the pin hole.

4. The tabletop connection structure according to claim 1, wherein When the tabletop is lifted upward from the lower limit position, the outer end of the control pin gradually slides out of the lower trajectory conversion control surface and slides onto the first trajectory control surface. The lower end of the third trajectory control surface extends obliquely towards the second trajectory control surface, thereby covering the lower end of the second trajectory control surface, so as to prevent the outer end of the control pin from sliding into the second trajectory control surface when sliding out of the lower trajectory conversion control surface.

5. The tabletop connection structure according to claim 1, characterized in that It further includes a second spring, with both ends of the second spring respectively connected to the control block and the tabletop. The second spring tends to force the control block to swing, and the outer circumferential surface of the outer end of the control pin abuts against the first trajectory control surface, the second trajectory control surface, the lower trajectory conversion control surface and the upper trajectory conversion control surface.

6. The tabletop connection structure according to claim 1, characterized in that, The cross-sectional shape of the card slot is integrally arranged in a ratchet tooth groove shape, which is used to enable the control pin to pass through the card slot unidirectionally.

7. The tabletop connection structure according to claim 1, characterized in that, The tabletop includes a rotating arm and a table board; the table board is rotatably arranged on the body through the rotating arm; and the rotating arm is rotatably arranged on the body through a second pivot shaft.

8. The tabletop connection structure according to claim 7, wherein, The table board includes a main board and a sub-board. The bottom surface of the main board is fixedly connected to the rotating arm. The sub-boards are symmetrically and flipably arranged on both sides of the main board. The two sub-boards can be flipped inward by 180° to fit the upper surface of the main board or flipped outward by 180° to open to be flush with the upper surface of the main board.

9. The tabletop connection structure according to claim 8, characterized in that, It further includes a locking structure, which is used to lock the sub-board after it is opened and has a bearing capacity.

10. The tabletop connection structure according to claim 9, characterized in that, A damping structure is arranged between the main board and the sub-board.

11. The tabletop connection structure according to claim 1, characterized in that, It further includes a covering component; the covering component is respectively fixedly connected to the body, the tabletop and the control block, and is used to cover the exposed surfaces of the components.

12. The tabletop connection structure according to claim 1, wherein A shock-absorbing pin is arranged at the bottom of the control block, and the shock-absorbing pin is telescopically inserted into the mounting hole on the control block; a third spring is arranged in the mounting hole, and the third spring tends to force the shock-absorbing pin to extend. The body is provided with a guiding surface on the moving path of the shock-absorbing pin. When the tabletop is lifted and the control pin passes through the card slot, the shock-absorbing pin abuts against the guiding surface under the action of the third spring, which is used to avoid shock absorption and noise reduction during the process of the control pin falling into the card slot.

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