A small table and armrest box for cars

Abstract

This invention provides a small table and armrest box for vehicles, belonging to the field of automotive parts technology. It includes: a main board, with a wing plate hinged to at least one side of the main board; a first hinge portion for hinged connection to a base at one end of the main board; a drive slider slidably mounted on the main board; a connecting rod with one end hinged to the drive slider and a second hinge portion for hinged connection to the base at the other end; the wing plate and the drive slider are linked by a retraction linkage unit, which is slidably mounted on the main board, with one end of the retraction linkage unit forming a wedge-shaped transmission engagement with the drive slider and the other end fixedly connected to the wing plate. The beneficial effects of this invention are: when the main board rotates around the base, the drive slider can slide on the main board via a swing guide rod mechanism, and the retraction linkage unit is driven by wedge transmission, causing the wing plate to automatically unfold or fold synchronously with the folding action of the main board, greatly simplifying the operation steps and improving the ease of use of the small table.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology, and relates to a small table and armrest box for automobiles. Background Technology

[0002] To improve the utilization efficiency of vehicle interior space and meet the needs of passengers in scenarios such as parking, resting, working, or dining, existing vehicles typically have a retractable small table in the center armrest assembly. This in-vehicle small table can be folded away when not in use and flipped or unfolded to form a desktop when needed, thus providing a temporary platform for use without taking up as much interior space as possible.

[0003] Existing small tables typically employ a lift-and-fold structure, where the table automatically unfolds during lifting and folds automatically during lowering, facilitating both storage and use. While this type of structure offers advantages in terms of ease of operation, the small table and its linkage mechanism are usually located inside the central armrest assembly. The lifting, flipping, or folding requires a significant amount of space, encroaching on space within the central armrest assembly that could otherwise be used for storage or other functional modules.

[0004] For the reasons mentioned above, some flip-out small table structures have been proposed in the prior art. However, such structures can usually only fold and unfold the mainboard by rotating it, resulting in insufficient extension length of the mainboard in the direction of the passenger compartment. That is, the unfolding size in the vehicle width direction is limited, making it difficult to form a sufficiently large usable table surface.

[0005] To address the aforementioned issues, some solutions incorporate retractable wing panels on the sides of the mainboard to increase usable desktop space. However, existing wing panels typically cannot fold and unfold in sync with the mainboard's movement, impacting the overall usability and storage efficiency. Therefore, achieving synchronized folding and unfolding of the wing panels with the mainboard while ensuring the small tabletop remains foldable and easy to store is a crucial technical challenge that requires expertise. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a small table and armrest box for vehicles.

[0007] The objective of this invention can be achieved through the following technical solution: a vehicle-mounted small table for installation on a base, comprising: A motherboard, wherein at least one side of the motherboard is hinged with a wing plate, and one end of the motherboard is provided with a first hinge portion for hinged to the base; A drive slider, which is slidably mounted on the motherboard; A connecting rod, one end of which is hinged to the drive slider and the other end of which is provided with a second hinge portion for hinged to the base, wherein the rotation axis of the first hinge portion is parallel to and not coaxial with the rotation axis of the second hinge portion; The wing plate and the drive slider are linked together by a retraction linkage unit. The retraction linkage unit is slidably mounted on the main board. The movement path of the drive slider is not parallel to the movement path of the retraction linkage unit. One end of the retraction linkage unit is engaged with the drive slider in a wedge-shaped transmission, and the other end is fixedly connected to the wing plate.

[0008] Preferably, the drive slider is provided with a drive groove, at least a portion of which is inclined relative to the movement path of the drive slider, and the end of the retraction linkage unit that cooperates with the drive slider is provided with a sliding shaft, which slides in cooperation with the drive groove.

[0009] Preferably, the drive slide includes a transition section, a retractable section, and a locking section arranged sequentially. The transition section and the locking section are both straight groove structures extending along the moving path of the drive slider, and the retractable section is an inclined groove structure inclined to the moving path of the drive slider.

[0010] Preferably, the angular position of the wing plate relative to the main board includes a folded position and an unfolded position; when the wing plate is in the folded position, a predetermined angle is formed between the wing plate and the main board, and the sliding shaft is located at the end of the transition section away from the retractable section; when the wing plate is in the unfolded position, the wing plate is flush with the main board, and the sliding shaft is located within the locking section.

[0011] Preferably, the retraction linkage unit includes a first connecting seat, a linkage member, and a second connecting seat. The two ends of the linkage member are respectively hinged to the first connecting seat and the second connecting seat. The rotation axis of the first connecting seat and the rotation axis of the second connecting seat are both parallel to the rotation axis of the wing plate. The first connecting seat is slidably mounted on the main board. The sliding shaft is disposed on the first connecting seat. The second connecting seat is fixedly connected to the wing plate.

[0012] Preferably, the wing plates are hinged to both sides of the motherboard, the drive slider is provided with two drive grooves, the two drive grooves are symmetrically arranged, and the two wing plates are symmetrically arranged and move synchronously.

[0013] Preferably, it also includes a retractable drive element, one end of which is hinged to the motherboard and the other end of which is provided with a third hinge portion for hinged to the base.

[0014] Preferably, the moving path of the driving slider is configured to extend along the X-axis direction of a three-dimensional coordinate system, and the moving path of the retraction linkage unit is configured to extend along the Y-axis direction of a three-dimensional coordinate system. The rotation axis of the first hinge and the rotation axis of the second hinge are both parallel to the Y-axis of a three-dimensional coordinate system, and there is a height difference between the rotation axis of the first hinge and the rotation axis of the second hinge in the Z-axis direction of a three-dimensional coordinate system.

[0015] An armrest box includes a base and a vehicle-mounted small table. A first hinge portion of the main board and a second hinge portion of the connecting rod are both hinged to the base. The first hinge portion is located at the top front side of the base. The distance between the second hinge portion and the top of the base in the height direction of the base is greater than the distance between the first hinge portion and the top of the base in the height direction of the base.

[0016] Preferably, the base has a receiving groove on its side that matches the shape of the wing plate, and the main board has a closed position and a flipped position; when the main board is in the closed position, the main board is in contact with the front side of the base, and the wing plate is in the folded position and stored in the receiving groove; when the main board is in the flipped position, the wing plate is in the unfolded position.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the main board rotates around the base, the drive slider can slide on the main board through the swing guide rod mechanism, and drive the unfolding linkage unit through the wedge transmission, so that the wing plate automatically unfolds or folds synchronously with the folding action of the main board, which greatly simplifies the operation steps and improves the ease of use of the small table.

[0018] 2. Since the connecting rod and the base are constrained by the second hinge, and the length of the connecting rod remains fixed, the angle between the main board and the connecting rod changes continuously during the main board flipping process. The connecting rod will exert a pushing and pulling effect on the drive slider under the geometric constraint, so that the drive slider can only move back and forth along the sliding direction on the main board.

[0019] 3. A clear mechanical transmission relationship is established between the main board angle, the drive slider position, and the wing plate angle. The attitude change of the main board is first converted into a stroke change by the connecting rod, and then converted into wing plate rotation by the cooperation of the drive slide and the slide shaft.

[0020] 4. When the sliding shaft is in the transition section, the movement of the driving slider will not produce a displacement component force on the sliding shaft, so the wing plate and the main plate are in a state of motion decoupling. Since the extension section is arranged at an angle relative to the movement direction of the driving slider, the displacement of the driving slider will produce a displacement component force on the sliding shaft, so that the wing plate and the main plate establish a motion coupling relationship. The locking section is used to limit the end position of the sliding shaft after the wing plate is fully extended in order to maintain the extension stability of the wing plate.

[0021] 5. The first connecting seat is used to cooperate with the drive slider to form a wedge-shaped transmission structure. During the movement of the drive slider, it can apply a force to the first connecting seat, so that the first connecting seat will produce a corresponding displacement change under the structural constraints. The linkage and the second connecting seat are used to further convert the linear motion of the first connecting seat into the torque that drives the wing plate to rotate, and to stably transmit the torque to the wing plate, so that the wing plate rotates around its rotation axis. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the wing panel of the vehicle-mounted small table of the present invention in the unfolded position.

[0023] Figure 2 This is a schematic diagram of the wing panel of the vehicle-mounted small table of the present invention in the process of being retracted or extended.

[0024] Figure 3 This is a schematic diagram of the wing panel of the vehicle-mounted small table of the present invention in the folded position.

[0025] Figure 4 This is a partial exploded view of the vehicle-mounted small table of the present invention.

[0026] Figure 5 This is a schematic diagram showing the connection relationship between the main board, connecting rod, drive slider, and extension / retraction linkage unit of the present invention.

[0027] Figure 6 This is an exploded view of the structure of the drive slider and the retraction linkage unit of the present invention.

[0028] Figure 7 This is a bottom-view axonometric drawing of the small table of the armrest box of the present invention in use.

[0029] Figure 8 This is a schematic diagram showing the small table of the armrest box of the present invention in the process of being retracted or extended.

[0030] Figure 9 This is a schematic diagram of the armrest box of the present invention with the small table in the closed state.

[0031] In the figure, 100 is the main board; 110 is the first hinge; 200 is the wing plate; 300 is the drive slider; 310 is the drive slide; 311 is the transition section; 312 is the retraction section; 313 is the locking section; 400 is the connecting rod; 410 is the second hinge; 500 is the retraction linkage unit; 510 is the first connecting seat; 511 is the slide shaft; 520 is the linkage component; 530 is the second connecting seat; 600 is the drive element; 700 is the base; and 710 is the receiving groove. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0033] like Figures 1 to 9 As shown, a vehicle-mounted small table for mounting on a base 700 includes a main board 100, a drive slider 300, a connecting rod 400, and a wing plate 200; the wing plate 200 is hinged to at least one side of the main board 100, and a first hinge portion 110 for hinged to the base 700 is provided at one end of the main board 100. The drive slider 300 is slidably mounted on the main board 100; one end of the connecting rod 400 is hinged to the drive slider 300, and the other end is provided with a second hinge part 410 for hinged to the base 700. The rotation axis of the first hinge part 110 is parallel to and not coaxial with the rotation axis of the second hinge part 410; the wing plate 200 and the drive slider 300 are linked together through a retraction linkage unit 500. The retraction linkage unit 500 is slidably mounted on the main board 100. The movement path of the drive slider 300 is not parallel to the movement path of the retraction linkage unit 500. One end of the retraction linkage unit 500 forms a wedge-shaped transmission engagement with the drive slider 300, and the other end is fixedly connected to the wing plate 200.

[0034] In this embodiment, the main board 100 constitutes the main support surface of the desktop, and the wing plate 200 is used to form a usable surface for occupants in the unfolded state. Both the first hinge portion 110 and the second hinge portion 410 form rotational constraints with the base 700, but they are arranged parallel and offset in space, so that when the main board 100 flips around the first hinge portion 110, the connecting rod 400 will inevitably change its own angle with the change of the attitude of the main board 100, and convert this angle change into a change in the linear stroke of the driving slider 300 on the main board 100.

[0035] The displacement of the drive slider 300 does not directly act on the wing plate 200. Instead, the force transmission direction is first converted by the retraction and extension linkage unit 500, and then the retraction and extension linkage unit 500 drives the wing plate 200 to fold or unfold around its own rotation axis. Specifically, since the movement path of the drive slider 300 is not parallel to the movement path of the retraction and extension linkage unit 500, a wedge-shaped transmission relationship (i.e., an inclined plane driving relationship) is formed between them. Under geometric constraints, the linear displacement of the drive slider 300 can be converted into an angle change of the wing plate 200, so that the entire mechanism can complete the linkage of the wing plate 200 by relying solely on the flipping action of the main board 100.

[0036] It should be further explained that the angular displacement of the main board 100 can be converted into the linear displacement of the drive slider 300 through the connecting rod 400. The principle is as follows: the base 700 serves as a fixed mounting reference. The main board 100 is hinged to the base 700 through the first hinge part 110. One end of the connecting rod 400 is hinged to the base 700 through the second hinge part 410, and the other end is hinged to the drive slider 300 mounted on the main board 100. The first hinge part 110 and the second hinge part 410 are staggered on the base 700, forming a fixed geometric distance between them. The base 700, the main board 100, the connecting rod 400, and the drive slider 300 together constitute a swing guide rod mechanism.

[0037] Based on the aforementioned swing guide rod mechanism, when the driving element 600 pushes the main board 100 to rotate around the first hinge portion 110, the angle between the main board 100 and the base 700 changes, and the driving slider 300 changes its spatial position along with the main board 100. Since the connecting rod 400 and the base 700 are constrained by the second hinge portion 410, and the length of the connecting rod 400 remains fixed, the angle between the main board 100 and the connecting rod 400 continuously changes during the rotation of the main board 100. Under geometric constraints, the connecting rod 400 will exert a pushing and pulling effect on the driving slider 300, so that the driving slider 300 can only reciprocate along the sliding direction on the main board 100.

[0038] In simple terms, from a kinematic perspective, the positions of the two hinge points on the base 700 are fixed. When the main board 100 swings around the first hinge 110, the connecting rod 400 rotates around the second hinge 410 accordingly, and its fixed length constrains the motion trajectory of the drive slider 300. Therefore, the rotational motion of the main board 100 is converted into the linear sliding motion of the drive slider 300, and the stroke of the drive slider 300 corresponds to the flip angle of the main board 100. The larger the flip angle of the main board 100, the more obvious the positional change of the drive slider 300. When flipping in the opposite direction, the drive slider 300 also moves back synchronously in the opposite direction.

[0039] like Figures 1 to 7 As shown, based on the above embodiment, the drive slider 300 is provided with a drive groove 310, at least a portion of the drive groove 310 is inclined relative to the moving path of the drive slider 300, and the end of the extension and retraction linkage unit 500 that cooperates with the drive slider 300 is provided with a sliding shaft 511, and the sliding shaft 511 is slidably engaged with the drive groove 310.

[0040] The drive groove 310 is a guide path inside or on the surface of the drive slider 300, and the slide shaft 511 is embedded therein and slides relative to it as the drive slider 300 moves. The presence of the inclined portion in the drive groove 310 can convert the linear displacement of the drive slider 300 into the linear displacement of the retraction linkage unit 500.

[0041] Through this structure, the stroke position of the drive slider 300 is controlled by the connecting rod 400 to the angular position of the main board 100 relative to the base 700, and the angular position of the wing plate 200 relative to the main board 100 is controlled by the extension and retraction linkage unit 500 to the stroke position of the drive slider 300.

[0042] In other words, a clear mechanical transmission relationship is established between the angle of the main board 100, the position of the drive slider 300, and the angle of the wing plate 200. The attitude change of the main board 100 is first converted into a stroke change by the connecting rod 400, and then converted into the rotation of the wing plate 200 by the cooperation of the drive slide 310 and the slide shaft 511.

[0043] Based on the above embodiments, the drive slide 310 includes a transition section 311, a retractable section 312 and a locking section 313 arranged sequentially. The transition section 311 and the locking section 313 are both straight groove structures extending along the moving path of the drive slider 300, and the retractable section 312 is an inclined groove structure inclined to the moving path of the drive slider 300.

[0044] It should be noted that the installation space for the vehicle tray table is limited by the seat cushion and the interior side walls of the vehicle. When the wing panel 200 is in a folded and hidden state and within a confined space, improper control of the unfolding sequence can easily cause interference with the surrounding structure, thus affecting the continuity of the unfolding process. To solve the above problem, this embodiment uses a continuously arranged transition section 311, a retraction section 312, and a locking section 313 to segmentally constrain the movement of the sliding shaft 511, enabling the wing panel 200 to move sequentially.

[0045] Since the extension direction of the transition section 311 is consistent with the movement direction of the drive slider 300, when the slide shaft 511 is located within the transition section 311, the movement of the drive slider 300 will not generate a displacement component force on the slide shaft 511. Therefore, the wing plate 200 and the main board 100 are in a state of motion decoupling; that is, the wing plate 200 does not rotate during the initial stage of the main board 100's flipping or the final stage of its closing, thus avoiding motion interference. Since the retraction section 312 is arranged at an angle relative to the movement direction of the drive slider 300, the displacement of the drive slider 300 will generate a displacement component force on the slide shaft 511, establishing a motion coupling relationship between the wing plate 200 and the main board 100. The main board 100 can drive the wing plate 200 to retract and expand synchronously within the corresponding rotation stroke. The locking section 313 is used to limit the terminal position of the slide shaft 511 after the wing plate 200 has completed its deployment, in order to maintain the deployment stability of the wing plate 200.

[0046] Based on the above embodiments, the angular position of the wing plate 200 relative to the main plate 100 includes a folded position and an unfolded position. When the wing plate 200 is in the folded position, a predetermined angle is formed between the wing plate 200 and the main plate 100, and the slide shaft 511 is located at the end of the transition section 311 away from the retractable section 312; when the wing plate 200 is in the unfolded position, the wing plate 200 is flush with the main plate 100, and the slide shaft 511 is located within the locking section 313.

[0047] like Figures 1 to 6 As shown, based on the above-described embodiment, the retraction linkage unit 500 includes a first connecting seat 510, a linkage member 520, and a second connecting seat 530. The two ends of the linkage member 520 are respectively hinged to the first connecting seat 510 and the second connecting seat 530. The rotation axis of the first connecting seat 510 and the rotation axis of the second connecting seat 530 are both parallel to the rotation axis of the wing plate 200. The first connecting seat 510 is slidably mounted on the main board 100, the sliding shaft 511 is disposed on the first connecting seat 510, and the second connecting seat 530 is fixedly connected to the wing plate 200.

[0048] In this embodiment, the retraction and extension linkage unit 500 is used to convert the linear displacement of the drive slider 300 into the torque for the rotation of the wing plate 200. The first connecting seat 510 cooperates with the drive slider 300 to form a wedge-shaped transmission structure. During movement, the drive slider 300 applies a force to the first connecting seat 510, causing it to undergo a corresponding displacement change under structural constraints. This is achieved by driving the first connecting seat 510 along a predetermined path using the principle of inclined plane driving. The linkage member 520 and the second connecting seat 530 further convert the linear motion of the first connecting seat 510 into the torque for the rotation of the wing plate 200, and stably transmit this torque to the wing plate 200, causing it to rotate around its rotation axis. Thus, the retraction and extension linkage unit 500 completes the motion conversion between the linear motion of the drive slider 300 and the rotation of the wing plate 200.

[0049] like Figures 1 to 5 As shown, based on the above implementation method, the main board 100 is hinged with wing plates 200 on both sides, and the drive slider 300 is provided with two drive grooves 310. The two drive grooves 310 are symmetrically arranged, and the two wing plates 200 are symmetrically arranged and move synchronously.

[0050] The left and right wing plates 200 are linked to the drive sliders 300 through corresponding retraction and extension linkage units 500. After the two drive slides 310 are symmetrically arranged, the two slide shafts 511 can enter the same functional area during the same flipping process of the main board 100, and drive the two wing plates 200 to unfold or fold synchronously with the same action rhythm. Since the two wing plates 200 have symmetrical structures and symmetrical forces, they can form a symmetrical tabletop with the main board 100 after unfolding, and can also be retracted to both sides of the main board 100 in the same posture after folding.

[0051] like Figures 1 to 7 As shown, based on the above embodiment, it also includes a retractable drive element 600. One end of the drive element 600 is hinged to the motherboard 100, and the other end is provided with a third hinge portion for hinged to the base 700.

[0052] The drive element 600 preferably adopts an electric telescopic rod. When the electric telescopic rod extends or retracts, it changes the relative distance between its two hinge points and converts the axial extension and retraction into a flipping motion of the main board 100 around the first hinge portion 110. After the main board 100 changes its posture, it drives the drive slider 300 to move via the connecting rod 400. The drive slider 300 then controls the wing plate 200 to retract via the retraction linkage unit 500. Therefore, the drive element 600 is at the power input end of the entire tabletop and determines the flipping and closing process of the tabletop. With the use of a telescopic drive element 600, the small tabletop can automatically unfold and automatically retract without increasing complex manual operation.

[0053] like Figures 1 to 5 As shown, based on the above embodiment, the movement path of the drive slider 300 is configured to extend along the X-axis direction of a three-dimensional coordinate system, and the movement path of the retraction linkage unit 500 is configured to extend along the Y-axis direction of a three-dimensional coordinate system. The rotation axis of the first hinge portion 110 and the rotation axis of the second hinge portion 410 are both parallel to the Y-axis of a three-dimensional coordinate system, and there is a height difference between the rotation axis of the first hinge portion 110 and the rotation axis of the second hinge portion 410 in the Z-axis direction of a three-dimensional coordinate system.

[0054] This spatial arrangement defines the basic kinematic relationships of the mechanism. The X-axis is the length direction of the main board 100; the Y-axis is the width direction of the main board 100. Therefore, the movement path of the retraction linkage unit 500 is perpendicular to the movement path of the drive slider 300, thus forming a wedge-shaped transmission condition. The rotation axes of the first hinge part 110 and the second hinge part 410 are both parallel to the Y-axis and offset in the Z-axis direction, forming a spatially offset hinge relationship between the main board 100 and the connecting rod 400. This relationship can continuously generate geometric constraints when the main board 100 flips, thereby driving the drive slider 300 to complete a stable reciprocating motion.

[0055] like Figures 1 to 9As shown, an armrest box includes a base 700 and the aforementioned vehicle table; the first hinge portion 110 of the main board 100 and the second hinge portion 410 of the connecting rod 400 are both hinged to the base 700. The first hinge portion 110 is located at the top front side of the base 700, and the distance between the second hinge portion 410 and the top of the base 700 in the height direction of the base 700 is greater than the distance between the first hinge portion 110 and the top of the base 700 in the height direction of the base 700.

[0056] The base 700 serves as an installation carrier, providing a fixed reference and storage space for the small tabletop. The first hinge 110 is located at the top front of the base 700, allowing the main board 100 to be flipped up from the front of the base 700 and form a desktop working posture. The relatively lower arrangement of the second hinge 410 provides the necessary misalignment fulcrum for the connecting rod 400, enabling the connecting rod 400 to form an effective geometric constraint during the flipping of the main board 100, thereby pushing the drive slider 300 to move with the change of the angle of the main board 100.

[0057] Based on the above embodiment, the base 700 has a receiving groove 710 on its side that matches the shape of the wing plate 200, and the main board 100 has a closed position and a flipped position. When the main board 100 is in the closed position, the main board 100 is in contact with the front side of the base 700, and the wing plate 200 is in the folded position and stored in the receiving groove 710; when the main board 100 is in the flipped position, the wing plate 200 is in the unfolded position.

[0058] The receiving slot 710 is used to receive the wing panel 200 in the folded state, allowing the wing panel 200 to be embedded within the side contour range of the base 700 when stored, reducing external protrusion and making it easier for the armrest box to maintain a neat appearance when not in use. When the main board 100 is in the closed position, the main board 100 is attached to the front side of the base 700, and the wing panel 200 is folded and enters the receiving slot 710, which can avoid interfering with the activities of the occupants. When the main board 100 is in the flipped-up position, the main board 100 is in a horizontal state as the main body of the table, and the wing panel 200 unfolds synchronously under the action of the retraction linkage unit 500, forming a table together with the main board 100.

[0059] It should be noted that the small table is not stored inside the base 700, but rather folded up by fitting against the outside. Since neither the main board 100 nor the wing plate 200 needs to be stored inside the base 700, this structure does not require a large amount of space inside the base 700 to achieve the folding and storage of the small table. This facilitates the arrangement of other functional components inside the base 700, and also gives the small table a higher degree of structural integrity and better space utilization efficiency when folded up.

[0060] like Figures 1 to 9As shown, when the vehicle table is initially closed (i.e., when the main board 100 is in the closed position), the main board 100 is close to the front of the base 700, and the wing plate 200 is folded and stored in the receiving groove 710 on the side of the base 700. The overall shape is flush with the base 700. At this time, the table does not occupy the internal space of the base 700.

[0061] When the vehicle tray table is opened, the drive element 600 actuates and changes the relative distance between its two hinge points, causing the main board 100 to gradually flip up around the first hinge portion 110. Since one end of the connecting rod 400 is hinged to the drive slider 300 and the other end is hinged to the second hinge portion 410 on the base 700, during the flipping process of the main board 100, the connecting rod 400 pushes the drive slider 300 to move linearly along the main board 100 under geometric constraints. In the initial stage of the main board 100 flipping up, the sliding shaft 511 is located in the transition section 311 of the drive slide groove 310. At this time, the retraction linkage unit 500 does not drive the wing plate 200 to rotate, and the wing plate 200 remains in a folded state, thereby avoiding interference between the wing plate 200 and the surrounding structure. As the mainboard 100 continues to rotate, the slide shaft 511 enters the retraction section 312. The linear displacement of the drive slider 300 is transmitted to the retraction linkage unit 500 through wedge-shaped transmission. The first connecting seat 510, the linkage member 520, and the second connecting seat 530 cooperate in sequence to convert the linear motion of the drive slider 300 into the rotational torque of the wing plate 200 around its own rotation axis. The wing plate 200 gradually unfolds from the folded position. When the wing plate 200 is fully unfolded, the slide shaft 511 further enters the locking section 313, and the end position of the retraction linkage unit 500 is restricted. The wing plate 200 remains in the unfolded position, thereby maintaining a stable plane on the tabletop during use.

[0062] When the small table is folded up, the drive element 600 moves in the opposite direction, the main board 100 drives the drive slider 300 to move in the opposite direction, the slide shaft 511 moves from the locking section 313 into the unfolding section 312, and finally returns to the transition section 311. The wing plate 200 is then folded back from the unfolded position and stored in the receiving groove 710 on the side of the base 700.

[0063] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0064] Furthermore, in this invention, descriptions involving "first," "second," "a," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction between two elements, unless otherwise explicitly limited.

[0066] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A small table for vehicles, for mounting on a base (700), characterized in that, include: A motherboard (100) has a wing plate (200) hinged to at least one side of the motherboard (100), and one end of the motherboard (100) is provided with a first hinge portion (110) for hinged to the base (700). A drive slider (300) is slidably mounted on the motherboard (100); A connecting rod (400), one end of which is hinged to the drive slider (300) and the other end is provided with a second hinge part (410) for hinged to the base (700), wherein the rotation axis of the first hinge part (110) is parallel to and not coaxial with the rotation axis of the second hinge part (410); The wing plate (200) and the drive slider (300) are linked together by a retraction linkage unit (500). The retraction linkage unit (500) is slidably mounted on the main board (100). The moving path of the drive slider (300) is not parallel to the moving path of the retraction linkage unit (500). One end of the retraction linkage unit (500) is wedge-driven with the drive slider (300), and the other end is fixedly connected to the wing plate (200). The drive slider (300) is provided with a drive groove (310), at least a portion of which is inclined relative to the moving path of the drive slider (300). The retraction linkage unit (500) is provided with a sliding shaft (511) at one end that cooperates with the drive slider (300), and the sliding shaft (511) is slidably engaged with the drive groove (310). The drive slide (310) includes a transition section (311), a retractable section (312), and a locking section (313) arranged sequentially. The transition section (311) and the locking section (313) are both straight groove structures extending along the moving path of the drive slider (300), and the retractable section (312) is an inclined groove structure inclined to the moving path of the drive slider (300). The angular position of the wing plate (200) relative to the main plate (100) includes a folded position and an unfolded position; when the wing plate (200) is in the folded position, a predetermined angle is formed between the wing plate (200) and the main plate (100), and the sliding shaft (511) is located at the end of the transition section (311) away from the retractable section (312); when the wing plate (200) is in the unfolded position, the wing plate (200) is flush with the main plate (100), and the sliding shaft (511) is located within the locking section (313).

2. The vehicle tray table as described in claim 1, characterized in that, The retraction linkage unit (500) includes a first connecting seat (510), a linkage member (520), and a second connecting seat (530). The two ends of the linkage member (520) are respectively hinged to the first connecting seat (510) and the second connecting seat (530). The rotation axis of the first connecting seat (510) and the rotation axis of the second connecting seat (530) are both parallel to the rotation axis of the wing plate (200). The first connecting seat (510) is slidably mounted on the main board (100). The sliding shaft (511) is disposed on the first connecting seat (510). The second connecting seat (530) is fixedly connected to the wing plate (200).

3. A small table for vehicles as described in claim 1, characterized in that, The main board (100) is hinged to both sides of the wing plate (200), and the drive slider (300) is provided with two drive grooves (310). The two drive grooves (310) are symmetrically arranged, and the two wing plates (200) are symmetrically arranged and move synchronously.

4. A small table for vehicles as described in claim 1, characterized in that, It also includes a retractable drive element (600), one end of which is hinged to the motherboard (100) and the other end is provided with a third hinge portion for hinged to the base (700).

5. A small table for vehicles as described in claim 1, characterized in that, The moving path of the drive slider (300) is configured to extend along the X-axis direction of a three-dimensional coordinate system, and the moving path of the retraction linkage unit (500) is configured to extend along the Y-axis direction of a three-dimensional coordinate system. The rotation axis of the first hinge (110) and the rotation axis of the second hinge (410) are both parallel to the Y-axis of a three-dimensional coordinate system. There is a height difference between the rotation axis of the first hinge (110) and the rotation axis of the second hinge (410) in the Z-axis direction of a three-dimensional coordinate system.

6. An armrest box, characterized in that, The system includes a base (700) and a vehicle tray as described in any one of claims 1 to 5. The first hinge portion (110) of the main board (100) and the second hinge portion (410) of the connecting rod (400) are both hinged to the base (700). The first hinge portion (110) is located at the top front side of the base (700). The distance between the second hinge portion (410) and the top of the base (700) in the height direction of the base (700) is greater than the distance between the first hinge portion (110) and the top of the base (700) in the height direction of the base (700).

7. The armrest box as described in claim 6, characterized in that, The base (700) has a receiving groove (710) on its side that is adapted to the shape of the wing plate (200). The main board (100) has a closed position and a flipped position. When the main board (100) is in the closed position, the main board (100) is in contact with the front side of the base (700), and the wing plate (200) is in the folded position and stored in the receiving groove (710). When the main board (100) is in the flipped position, the wing plate (200) is in the unfolded position.

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