Vehicle small table board with front-back adjusting mechanism and vehicle

Abstract

The utility model provides a vehicle small table board with a front-back adjusting mechanism and a vehicle, and belongs to the technical field of vehicle parts. The movable connecting piece is connected with the lifting connecting piece in a sliding mode, the movable connecting piece can slide relative to the lifting connecting piece to achieve front-back adjustment, and the stroke position of the movable connecting piece comprises an initial position; the energy storage reset piece is installed on the lifting connecting piece, and the energy storage reset piece is connected with the movable connecting piece; when the movable connecting piece is located at the non-initial position, the energy storage reset piece stores force and provides reset force for the movable connecting piece to enable the movable connecting piece to tend to the initial position. The hidden type small table board for the vehicle has the advantages that the hidden type small table board for the vehicle can be adjusted front and back, the practicability and adaptability of the hidden type small table board for the vehicle are greatly improved by introducing a front-back adjusting mechanism, each passenger can adjust the position of the small table board according to needs of the passenger, and therefore more personalized and comfortable riding experience is obtained.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle parts, and relates to a vehicle small table board with front and back adjusting mechanisms and a vehicle. BACKGROUND

[0002] With the development of the automobile industry and the increasing demand for comfort and multifunctionality in vehicles, vehicle small table boards, as a convenient vehicle-mounted accessory, are widely used in various vehicles, especially when traveling long distances or going on family outings, providing a platform for conveniently placing food, books or other small items. However, most existing hidden vehicle small table boards can only achieve basic extension and retraction functions, i.e., users can pull out the small table board from the armrest box for use and push it back into the armrest box when not in use to maintain the interior of the vehicle cabin and maximize the use of space.

[0003] Although such small table boards meet the basic needs of users to some extent, they have the defect of being unable to adjust the front and back positions. This limitation means that the position of the small table board is fixed and cannot be adjusted according to the actual needs of passengers (such as the use of passengers of different heights, the optimal position under different uses, etc.), reducing the flexibility and comfort of use. Therefore, the existing design cannot fully meet the diversified use scenarios and personal preferences, affecting the user experience. SUMMARY

[0004] The utility model aims at the above-mentioned problems existing in the prior art and provides a vehicle small table board with front and back adjusting mechanisms and a vehicle.

[0005] The utility model can achieve the above-mentioned purposes through the following technical scheme: a vehicle small table board with front and back adjusting mechanisms, comprising:

[0006] a lifting connecting piece;

[0007] a movable connecting piece, which is in sliding connection with the lifting connecting piece, can slide relative to the lifting connecting piece to achieve front and back adjustment, and has a stroke position including a starting position;

[0008] an energy storage reset piece, which is installed on the lifting connecting piece and connected with the movable connecting piece;

[0009] When the movable connecting piece is in a non-starting position, the energy storage reset piece stores energy and provides a reset force to the movable connecting piece to make it tend to the starting position.

[0010] Preferably, a folding connector is hinged to the movable connector, and the folding connector has a rotation stroke position including a use position; when the folding connector is in the use position, the folding connector and the lifting connector are locked in the front-back sliding direction of the movable connector to limit the sliding of the movable connector.

[0011] Preferably, one of the folding connector and the lifting connector is provided with a clamping tooth, and the other is provided with a limiting rack; when the folding connector is in the use position, the clamping tooth is engaged with the limiting rack to limit the sliding of the movable connector relative to the lifting connector; when the folding connector is in the non-use position, the clamping tooth is disengaged from the limiting rack to allow the sliding of the movable connector relative to the lifting connector.

[0012] Preferably, a table board body is mounted to the folding connector, and the table board body can be rotated relative to the movable connector through the folding connector; the table board body is synchronously moved with the folding connector and the movable connector through the folding connector to achieve front-back adjustment.

[0013] Preferably, one of the lifting connector and the movable connector is provided with a limiting sliding groove, and the other is provided with a limiting sliding block; the limiting sliding block has a cross section matching that of the limiting sliding groove, and the limiting sliding block is connected to the limiting sliding groove.

[0014] Preferably, the energy storage reset member includes a coil spring, one end of the coil spring is fixed relative to the lifting connector, and the other end of the coil spring is fixedly connected to the movable connector; when the movable connector is in the non-starting position, the coil spring is deformed to store energy.

[0015] Preferably, the coil spring is unfolded when the movable connector is in the non-starting position, and the unfolded part of the coil spring covers the exposed area of the limiting sliding groove.

[0016] Preferably, one of the lifting connector and the movable connector is provided with a damper, and the other is provided with a damping rack; the damper is provided with a damping gear, and the damping gear is engaged with the damping rack.

[0017] Preferably, a telescopic driving mechanism is further included, the telescopic driving mechanism includes a driving element and a screw rod, the driving element is connected to the screw rod and can drive the screw rod to rotate, the lifting connector is provided with a screw sleeve, the screw rod is threadedly connected to the screw sleeve, and the screw rod can drive the lifting connector to extend or retract through the screw sleeve when the screw rod rotates.

[0018] A vehicle includes the vehicle small table board with the front-back adjustment mechanism.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] 1. Provide a hidden car small table board that can realize front and back adjustment, through introducing front and back adjustment mechanism, greatly enhance its practicality and adaptability, so that every passenger can adjust the position of small table board according to own needs, thereby obtain more personalized and comfortable riding experience.

[0021] 2. The passenger first needs to slide the table board body (through the movable connecting piece) to a suitable position. This process is realized by sliding the movable connecting piece along the lifting connecting piece, when finding the suitable position, the passenger needs to turn the table board body (actually through operating the folding connecting piece) 90 degrees to the use position. This step not only makes the table board body change from vertical direction to horizontal direction, facilitates use, but also triggers the locking mechanism.

[0022] 3. By covering the exposed part of the limiting sliding slot, the coil spring can prevent dust and sundries from entering the sliding slot to a certain extent, avoid affecting the smooth movement of the sliding block, prolong the service life of the whole mechanical structure, and the covering effect of the coil spring can also play a certain decorative effect from the appearance, so that the overall design looks more neat and beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the state contrast drawing of folding connecting piece of the utility model car small table board in use position and turning up position.

[0024] Figure 2 It is the structure schematic view of the utility model car small table board.

[0025] Figure 3 It is the connection relation schematic view of the utility model lifting connecting piece and movable connecting piece.

[0026] Figure 4 It is the structure exploded view of the utility model lifting connecting piece and movable connecting piece.

[0027] Figure 5 It is the structure exploded view of the utility model movable connecting piece and another view lifting connecting piece.

[0028] Figure 6 It is the schematic view of the utility model car small table board and car inner armrest box.

[0029] In the figure, 100, lifting connecting piece; 110, limiting rack; 120, limiting sliding groove; 130, damper; 131, damping gear; 140, screw sleeve; 200, movable connecting piece; 210, limiting sliding block; 220, damping rack; 300, energy storage reset piece; 310, coil spring; 400, folding connecting piece; 410, clamping tooth; 500, table board body; 600, screw rod. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0031] As Figures 1 to 6 shown, a small table board for vehicle with front and back adjusting mechanism, comprising: lifting connecting piece 100; movable connecting piece 200, movable connecting piece 200 is slidably connected with lifting connecting piece 100, movable connecting piece 200 can slide relative to lifting connecting piece 100 to realize front and back adjustment, the stroke position of movable connecting piece 200 includes initial position; energy storage reset piece 300, energy storage reset piece 300 is installed on lifting connecting piece 100, energy storage reset piece 300 is connected with movable connecting piece 200; when movable connecting piece 200 is located at non-initial position, energy storage reset piece 300 stores energy and provides reset force to movable connecting piece 200 to make it tend to initial position.

[0032] The small table board aims to improve the convenience and comfort of passengers by using an integrated forward and backward adjustment mechanism. The core components include a lifting connector 100, a movable connector 200, and an energy storage reset component 300. The lifting connector 100 serves as the basic support structure of the entire system, providing a stable sliding platform for the movable connector 200. The lifting connector 100 is usually fixed in the vehicle armrest box or next to the seat, ensuring the stability of the overall structure and being able to withstand a certain weight and pressure. The movable connector 200 is the key component that realizes the forward and backward adjustment function. The movable connector 200 and the lifting connector 100 are connected in a sliding manner, which means that the movable connector 200 can freely slide on the lifting connector 100 to adjust the position of the small table board. The travel range of the movable connector 200 defines the distance that the small table board can move, and the starting position of this travel is the starting position of the movable connector 200. The energy storage reset component 300 (such as a spring) is installed on the lifting connector 100 and connected to the movable connector 200. The main function of the energy storage reset component 300 is to store energy when the movable connector 200 moves away from the starting position, and to exert a force on the movable connector 200 that tends to return to the starting position. When the user releases the operation of the movable connector 200, the energy storage reset component 300 will automatically pull the movable connector 200 back to the starting position, providing a convenient and fast automatic reset function, and also increasing the safety of use, avoiding accidental movement of the small table board caused by misoperation.

[0033] When the user needs to adjust the position of the small table board, he only needs to push or pull the movable connector 200 to slide it in the forward and backward direction to the desired position. In this process, the energy storage reset component 300 begins to accumulate energy. Once the user releases the movable connector 200, the energy stored in the energy storage reset component 300 will be released, generating a force that returns the movable connector 200 to the starting position. This design not only improves the user experience, but also increases the flexibility and convenience of use. In addition, this mechanism also helps to prevent accidental movement of the small table board during vehicle driving, improving the safety of use.

[0034] A hidden small table board for vehicles is provided, which can realize forward and backward adjustment. By introducing the forward and backward adjustment mechanism, the practicality and adaptability are greatly enhanced, so that every passenger can adjust the position of the small table board according to their own needs, thereby obtaining a more personalized and comfortable riding experience.

[0035] As Figures 1 to 6As shown, on the basis of the above-mentioned embodiments, a folding connecting piece 400 is further included, which is hinged with the movable connecting piece 200, and the rotating stroke position of the folding connecting piece 400 includes a use position; when the folding connecting piece 400 is in the use position, the folding connecting piece 400 is locked with the lifting connecting piece 100 in the front and back sliding direction of the movable connecting piece 200 to limit the sliding of the movable connecting piece 200.

[0036] In this embodiment, the folding connecting piece 400 is further introduced, which is connected with the movable connecting piece 200 through a hinged manner, so that the whole small table system not only can realize the adjustment of the front and back positions, but also increases the folding function, thereby greatly improving the space utilization and the flexibility of use.

[0037] The hinge design between the folding connecting piece 400 and the movable connecting piece 200 allows relative rotation between the two, which means that the user can rotate the small table from a stowed position (i.e. non-use position) to a use position as needed. The rotating stroke of the folding connecting piece 400 includes at least one explicit use position. When the folding connecting piece 400 is in the use position, it forms a kind of locking state with the lifting connecting piece 100, and this locking is for the limitation of the movable connecting piece 200 in the front and back sliding direction. In other words, in the use state, the movable connecting piece 200 is fixed and cannot move on its sliding track, ensuring the stability of the small table during use.

[0038] When the folding connecting piece 400 is in the use position, the locking mechanism formed between it and the lifting connecting piece 100 plays a key role. This locking mechanism can be mechanical, such as physical locking through buckles, latches, etc.; or it can be a design based on friction, ensuring that even if the vehicle encounters bumps during driving, the small table can remain stable and will not slide unexpectedly. This design ensures the safety and comfort of passengers when using the small table.

[0039] In actual use, the passenger can first find the most suitable small table position for himself by sliding the movable connecting piece 200, and then rotate the folding connecting piece 400 to the use position and lock it, ensuring that the small table will not move randomly during use. When the small table is not in use, it can be folded back to the non-use position, and the movable connecting piece 200 automatically returns to the initial position under the action of the energy storage return piece 300.

[0040] On the basis of the above-mentioned embodiments, one of the folding connecting piece 400 and the lifting connecting piece 100 is provided with the clamping tooth 410 and the other is provided with the limiting rack 110; when the folding connecting piece 400 is in the use position, the clamping tooth 410 is engaged with the limiting rack 110 to limit the sliding of the movable connecting piece 200 relative to the lifting connecting piece 100; when the folding connecting piece 400 is in the non-use position, the clamping tooth 410 is separated from the limiting rack 110 to allow the movable connecting piece 200 to slide relative to the lifting connecting piece 100.

[0041] The clamping tooth 410 and the limiting rack 110 are designed to realize the locking and unlocking functions, ensuring that the movable connecting piece 200 can be firmly fixed when needed and can freely slide when not needed. When the user rotates the folding connecting piece 400 to the use position (i.e., the table body 500 is at 90 degrees), the clamping tooth 410 will engage with the limiting rack 110. This engagement effectively limits the sliding of the movable connecting piece 200 relative to the lifting connecting piece 100, so that the small table remains stable during use. Whether it is writing, placing objects or performing other operations, unnecessary movement will not occur due to slight vibrations of the vehicle or operations of the passengers. When the folding connecting piece 400 is rotated back to the non-use position (i.e., the storage state or slightly lifted from the use position), the clamping tooth 410 is separated from the limiting rack 110, and the movable connecting piece 200 is no longer restricted and can freely slide along the lifting connecting piece 100, which means that the user can easily adjust the position of the small table as needed.

[0042] The passenger first needs to slide the table body 500 (through the movable connecting piece 200) to a suitable position. This process is achieved by sliding the movable connecting piece 200 along the lifting connecting piece 100, and when a suitable position is found, the passenger next needs to flip the table body 500 (actually by operating the folding connecting piece 400) by 90 degrees to the use position. This step not only changes the table body 500 from a vertical direction to a horizontal direction for easy use, but also triggers the locking mechanism. When the folding connecting piece 400 is flipped to the use position, the clamping tooth 410 provided thereon will engage with the limiting rack 110 installed on the lifting connecting piece 100. This engagement effectively locks the position of the movable connecting piece 200. After use, the passenger can again flip the folding connecting piece 400 back to the original non-use position, at which point the clamping tooth 410 is separated from the limiting rack 110, and the movable connecting piece 200 again becomes freely slidable.

[0043] On the basis of the above-mentioned embodiments, a table board body 500 is further included, which is installed on the folding connecting piece 400. The table board body 500 can rotate relative to the movable connecting piece 200 through the folding connecting piece 400. The table board body 500 moves synchronously with the movable connecting piece 200 through the folding connecting piece 400 to realize the front and back adjustment.

[0044] The table board body 500 is directly installed on the folding connecting piece 400, which means that the table board body 500 can not only be adjusted forward and backward with the movable connecting piece 200, but also rotate relative to the movable connecting piece 200 through the folding connecting piece 400. This design provides great flexibility for users to adjust the angle or position of the table board as needed.

[0045] It is worth noting that whether the table board body 500 is in the use position or not, it will move synchronously with the sliding of the movable connecting piece 200. This is because the table board body 500 is directly installed on the folding connecting piece 400, and the folding connecting piece 400 is connected with the movable connecting piece 200. Therefore, when adjusting the front and back position of the table board, the entire assembly (including the table board body 500, the folding connecting piece 400 and the movable connecting piece 200) moves as a whole.

[0046] As shown in Figures 1 to 5 On the basis of the above-mentioned embodiments, one of the lifting connecting piece 100 and the movable connecting piece 200 is provided with a limiting sliding groove 120, and the other is provided with a limiting sliding block 210. The cross section of the limiting sliding block 210 matches the cross section of the limiting sliding groove 120, and the limiting sliding block 210 is connected with the limiting sliding groove 120.

[0047] The combination of the limiting sliding block 210 and the limiting sliding groove 120 realizes the smooth sliding of the movable connecting piece 200 relative to the lifting connecting piece 100, and ensures the connection of the lifting connecting piece 100 and the movable connecting piece 200.

[0048] The limiting sliding groove 120 is provided on one of the lifting connecting piece 100 or the movable connecting piece 200, which is usually a groove with a certain width and depth. Its cross-sectional shape can be rectangular, T-shaped or other suitable forms. The limiting sliding block 210 is installed on the corresponding part of the other component (i.e. if the limiting sliding groove 120 is provided on the lifting connecting piece 100, the limiting sliding block 210 is provided on the movable connecting piece 200, and vice versa). The cross section of the limiting sliding block 210 matches the limiting sliding groove 120, ensuring that they can fit closely while allowing the limiting sliding block 210 to slide freely within the limiting sliding groove 120.

[0049] As shown in Figures 2 to 5As shown, on the basis of the above embodiment, the energy storage reset member 300 includes a coil spring 310, one end of which is fixed relative to the lifting connecting member 100, and the other end of which is fixedly connected with the movable connecting member 200; when the movable connecting member 200 is located at the non-starting position, the coil spring 310 is deformed to store energy.

[0050] The energy storage reset member 300 uses a coil spring 310 to achieve the automatic reset function. This design takes advantage of the physical properties of the coil spring 310 to ensure that the movable connecting member 200 can automatically return to the starting position when not subject to external forces. When the passenger pulls or pushes the table body 500 (through the movable connecting member 200) to adjust the position, if the movable connecting member 200 moves away from its starting position, the coil spring 310 will deform (stretch or compress), thereby storing energy. This means that regardless of whether the movable connecting member 200 moves forward or backward, the coil spring 310 will deform accordingly according to the direction and distance of movement, and accumulate elastic potential energy in the process. Once the passenger releases the operation of the movable connecting member 200, the energy stored in the coil spring 310 will be released to generate a restoring force to try to push the movable connecting member 200 back to its original starting position. In this process, the coil spring 310 gradually returns to its undeformed state, driving the movable connecting member 200 to smoothly slide back to its original position along the limiting sliding groove 120.

[0051] On the basis of the above embodiment, the coil spring 310 is deployed when the movable connecting member 200 is located at the non-starting position, and the deployed part of the coil spring 310 covers the exposed area of the limiting sliding groove 120.

[0052] By covering the exposed part of the limiting sliding groove 120, the coil spring 310 can to some extent prevent dust and debris from entering the sliding groove, avoid affecting the smooth movement of the sliding block, and prolong the service life of the entire mechanical structure. From the appearance, the covering effect of the coil spring 310 can also have a certain decorative effect, making the overall design look more neat and beautiful.

[0053] As shown in Figure 4 , Figure 5 On the basis of the above embodiment, one of the lifting connecting member 100 and the movable connecting member 200 is provided with a damper 130, and the other is provided with a damping rack 220, the damper 130 is installed with a damping gear 131, and the damping gear 131 is engaged with the damping rack 220.

[0054] The damper 130 is mounted on one of the two components (the lifting connector 100 or the movable connector 200) to provide resistance to smooth the sliding process of the movable connector 200. The damping gear 131 is connected to the damper 130 and is directly mounted on the output shaft of the damper 130. The damping gear 131 is designed to work with the damping rack 220, which is provided on the other component (if the damper 130 is provided on the lifting connector 100, the damping rack 220 is provided on the movable connector 200, and vice versa), to achieve precise speed control and stability effect. The damping rack 220 is designed to mesh with the damping gear 131 to form a mechanical linkage system.

[0055] When the use is completed, the restoring force of the coil spring 310 will cause the movable connector 200 to retract to the starting position. In this process, the damper 130 also plays a role to ensure that the movable connector 200 will not quickly rebound due to the excessive elastic potential of the coil spring 310, but will return to the original position at a stable speed.

[0056] As shown in Figure 1 , Figure 6 , on the basis of the above-mentioned embodiments, a telescopic driving mechanism is further included, which comprises a driving element and a screw rod 600. The driving element is connected to the screw rod 600 and can drive the screw rod 600 to rotate. The lifting connector 100 is provided with a screw sleeve 140, and the screw rod 600 is threadedly connected with the screw sleeve 140. When the screw rod 600 rotates, it can drive the lifting connector 100 to extend or retract through the screw sleeve 140.

[0057] The telescopic driving mechanism is introduced in the present embodiment to realize the automatic extension and retraction function of the lifting connector 100. The driving element can be an electric motor or other forms of elastic element, which is responsible for providing rotary power to drive the screw rod 600 to rotate. The screw sleeve 140 is used to convert the rotary motion of the screw rod 600 into linear motion.

[0058] The vehicle small table plate can realize completely automatic storage and expansion function, that is, the small table plate can be conveniently retracted into the armrest box or extended from the armrest box. This design not only greatly improves the convenience and flexibility of use, but also optimizes the utilization of the space in the vehicle.

[0059] As shown in Figures 1 to 6 , on the basis of the above-mentioned embodiments, a vehicle includes a vehicle small table plate having a front and rear adjusting mechanism.

[0060] The small table board is in a storage state, usually hidden in the armrest box. At this time, the folding connecting piece 400 is in a non-use position, the clamping teeth 410 is separated from the limiting rack 110, and the movable connecting piece 200 is in an initial position. When the small table board needs to be used, the driving element drives the screw rod 600 to rotate, and then the lifting connecting piece 100 is lifted. Then according to the individual needs, the movable connecting piece 200 is manually slid to adjust the front and back positions of the small table board. After selecting the desired front and back positions, the table board body 500 is flipped 90 degrees to a horizontal use position relative to the movable connecting piece 200 through the folding connecting piece 400. This action not only changes the table board body 500 from a vertical direction to a horizontal direction, which is convenient for placing articles or other activities, but also triggers the locking mechanism. After use, the folding connecting piece 400 is flipped back to the original non-use position again, at which time the clamping teeth 410 is separated from the limiting rack 110, allowing the movable connecting piece 200 to slide freely. Then, the small table board is pushed back into the armrest box to be hidden.

[0061] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0062] In addition, the descriptions such as "first", "second", "one" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0063] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixation" and the like should be broadly understood, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that ordinary skilled persons in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

Claims

1. A desk board for a vehicle having a front and rear adjustment mechanism, characterized by, The utility model relates to a foldable table, comprising: a lifting connecting piece (100); a movable connecting piece (200) which is in sliding connection with the lifting connecting piece (100), the movable connecting piece (200) being capable of sliding relative to the lifting connecting piece (100) to achieve forward and backward adjustment, the stroke position of the movable connecting piece (200) including a starting position; a force storage reset piece (300) which is installed on the lifting connecting piece (100), the force storage reset piece (300) being connected with the movable connecting piece (200); when the movable connecting piece (200) is in a non-starting position, the force storage reset piece (300) stores force and provides a reset force for the movable connecting piece (200) to tend to the starting position.

2. The table board of claim 1, wherein: The utility model further comprises a folding connecting piece (400) which is hinged with the movable connecting piece (200), the rotating stroke position of the folding connecting piece (400) including a use position; when the folding connecting piece (400) is in the use position, the folding connecting piece (400) is locked with the lifting connecting piece (100) in the forward and backward sliding direction of the movable connecting piece (200) to limit the sliding of the movable connecting piece (200).

3. The table board of claim 2, wherein: One of the folding connecting piece (400) and the lifting connecting piece (100) is provided with a pawl (410) and the other is provided with a limiting rack (110); when the folding connecting piece (400) is in the use position, the pawl (410) is engaged with the limiting rack (110) to limit the sliding of the movable connecting piece (200) relative to the lifting connecting piece (100); when the folding connecting piece (400) is in a non-use position, the pawl (410) is separated from the limiting rack (110) to allow the sliding of the movable connecting piece (200) relative to the lifting connecting piece (100).

4. The table board of claim 2, wherein: The utility model further comprises a table board body (500) which is installed on the folding connecting piece (400), the table board body (500) being capable of rotating relative to the movable connecting piece (200) through the folding connecting piece (400), the table board body (500) being moved synchronously with the movable connecting piece (200) through the folding connecting piece (400) to achieve forward and backward adjustment.

5. A vehicle tray table with a front-rear adjustment mechanism as described in claim 1, characterized in that: One of the lifting connecting piece (100) and the movable connecting piece (200) is provided with a limiting sliding groove (120) and the other is provided with a limiting sliding block (210), the cross section of the limiting sliding block (210) being consistent with the cross section of the limiting sliding groove (120), the limiting sliding block (210) being connected with the limiting sliding groove (120).

6. A table board for vehicle having a front and rear adjustment mechanism according to claim 5, wherein: The force storage reset piece (300) comprises a coil spring (310), one end of the coil spring (310) being fixed relative to the lifting connecting piece (100), the other end of the coil spring (310) being fixedly connected with the movable connecting piece (200); when the movable connecting piece (200) is in a non-starting position, the coil spring (310) is deformed to store force.

7. The table board of claim 6, wherein: The coil spring (310) is unfolded when the movable connecting piece (200) is in a non-starting position, and the unfolded part of the coil spring (310) covers the exposed area of the limiting sliding groove (120).

8. The table board of claim 1, wherein: One of the lifting connecting piece (100) and the movable connecting piece (200) is provided with a damper (130) and the other is provided with a damping rack (220), the damper (130) is installed with a damping gear (131), and the damping gear (131) is engaged with the damping rack (220).

9. The table board of claim 1, wherein: Further comprising a telescopic driving mechanism, the telescopic driving mechanism comprises a driving element and a screw rod (600), the driving element is connected with the screw rod (600) and can drive the screw rod (600) to rotate, the lifting connecting piece (100) is provided with a screw sleeve (140), the screw rod (600) is screwed with the screw sleeve (140), and the screw rod (600) can drive the lifting connecting piece (100) to extend and retract through the screw sleeve (140) when rotating.

10. A vehicle characterized by comprising: The small table board for vehicle with front and rear adjusting mechanism comprises the small table board for vehicle of any one of claims 1 to 9.

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