Folding table top device for vehicle

Abstract

The invention relates to an electric folding table top device (1) for a vehicle, comprising a base support (2), a support arm device (3) connected to the base support (2), and a support arm (6) mounted so as to be rotatable about a first pivot axis (A); and the table plate device (4) is connected with the supporting arm (3) and can rotate around a second overturning shaft (B) relative to the supporting arm (3). The table board device (4) is provided with a fixed arm (7) hinged to the supporting arm (6) and a table board (8), and the table board can be installed on the fixed arm (7) in a rotating mode around a rotating shaft (C). Each pivot shaft (A, B) is provided with a drive device (11, 13) and a motor device (12, 14 ') for driving and controlling the rotational movement of the respective pivot shaft (A, B). The table further comprises a motor auxiliary driving device (16) which is used for driving and controlling the table plate (8) to rotate around the rotating shaft (C).

Description

Technical Field

[0001] The present invention relates to a folding tabletop device for a vehicle, and more particularly to a folding tabletop device for a vehicle (such as a motor vehicle, an airplane or a railway vehicle), which is installed on a seat device of the vehicle and can be conveniently used by a person sitting on the seat device when the vehicle is in motion. Background Art

[0002] Particularly in the area of ​​motor vehicles, automotive customers increasingly want greater flexibility and adaptability in their vehicle interiors, resulting in the need to provide vehicles that meet a wider range of customer requirements. For example, as driving distances and time spent in vehicles become longer, consumers are increasingly demanding vehicle interiors that can accommodate activities such as work, play or eating. For this purpose, a pre-arranged tabletop device can be used in vehicles.

[0003] Such table devices are particularly suitable for rear passengers in motor vehicles and can be installed, for example, in a rear seat console between the left and right seats of a rear seat arrangement. Such table devices can preferably be folded and stored in a storage compartment and only unfolded or flipped to their functional position when needed. The driver or passenger may also need a table device. For example, as vehicles become more and more semi-automatic or assisted driving, the driver will need to complete fewer driving tasks and can therefore devote himself to secondary activities, in which the presence of a table is sometimes very helpful. Therefore, there is an increasing demand for foldable table devices that can be folded for storage or folded for use as needed. In this regard, in addition to comfort of use, easy and perfect operability, sturdiness and durability, and attractive appearance are also the main requirements for such foldable table devices.

[0004] Even in railway vehicles or airplanes, especially in higher transport classes, such as first-class railway carriages or business class or first-class airplane cabins, such a flexible folding tabletop device may be necessary or indispensable to improve comfort.

[0005] DE 10 2015 228 812 A1 describes a folding tabletop structure for installation in a console compartment of a rear seat console of a vehicle, which is provided with an armrest for pivoting the console compartment closed. When the armrest is folded up, the folding table can be pulled out of the console compartment by means of a pivoting arm, and the tabletop can then be unfolded and pivoted to the desired position. The position of the folding table can be adjusted depending on the position of the occupant sitting on the left or right side of the rear seat console. When not in use, the folding table structure can be retracted again, pushed into the console compartment by means of a pivoting arm, and then stored in the console compartment out of sight from the outside.

[0006] Although the familiar folding table structure can provide the desired comfort to passengers and has good functionality, such a folding table structure can be difficult to operate or handle. Passengers who want to use the table structure must be familiar with the process of pulling the table out of the console compartment and folding it into the use position and the reverse process of folding the table and putting it into the console compartment, on the one hand to avoid incorrect operation and possible damage to the components of the folding table device, and on the other hand to reduce the risk of injury when operating the folding table device. In addition, it can be cumbersome for the rear seat passenger to align the rear seat console, unfold the armrest, grasp the folding table device and apply sufficient force to pull the folding table device out of the console compartment, and then unfold and rotate it to the desired position or fold the folding table structure again for storage. Although a coil spring can be configured to provide a return force, pre-tensioning the swivel arm to help unfold the table structure. However, the user must then apply additional force to overcome the return force of the coil spring to fold the table structure. Summary of the invention

[0007] In view of this, the task of the present invention is to create a folding tabletop device for a vehicle that is easy to operate for the user and can bring great comfort to the user. The folding tabletop device is preferably easy to install and store, flexible to use, durable, relatively simple in structure, and beautiful in design.

[0008] To solve this problem, the present invention provides a folding tabletop device for a vehicle, especially for a motor vehicle, the device comprising: a base bracket; a support arm device coupled to the base bracket, the support arm having a support arm mounted flippably around a first flip axis, the support arm being flippable between a retracted position and an extended position, wherein the support arm device is equipped with a first drive device having a first motor device for driving and controlling the support arm to perform a flipping movement relative to the base bracket around the first flip axis; and a tabletop device coupled to the support arm, the tabletop device being arranged to be flippable relative to the support arm around a second flip axis different from the first flip axis, wherein the tabletop device can flip between a folded position and an unfolded position, wherein the tabletop device has a second drive device having a second motor device for driving and controlling the tabletop device to perform a flipping movement relative to the support arm around the second flip axis, wherein the tabletop device comprises a fixed arm hinged to the support arm and a tabletop, the tabletop being mounted on the fixed arm and being rotatable around a rotation axis different from the first flip axis and the second flip axis.

[0009] The present invention provides at least one first motor-assisted drive device for turning the support arm device relative to the base support, and a second motor-assisted drive device for folding and unfolding the tabletop device relative to the support arm. By means of the first motor device, the support arm can be automatically moved from a fully retracted position stored in a storage room to a position extending out of the storage room (in which position the support arm device extends upward from the base support, for example substantially vertically), and vice versa. In addition, the second motor device is also responsible for the automatic unfolding movement of the tabletop device between a folded position and an unfolded position, wherein the tabletop and the support arm are substantially in a straight line or in a common plane, and a folded position substantially 90° from the folded position, wherein the longitudinal direction of the tabletop is substantially perpendicular to the support arm in both directions of the folding movement. For all these movements of the support arm device and the tabletop device, no user force and assistance is required. The user can control this process simply, quickly and conveniently by means of a control device, such as pressing a corresponding button on a control panel, a remote control or other means. The operation is very simple, minimizing the risk of operating errors and the associated risks of damage to the folding tabletop device, vehicle components and the operator.

[0010] In one embodiment of the invention, the base support has two parallel support legs, which are connected to each other by a crossbeam, wherein the crossbeam has a receiving space for receiving the first motor device. The support legs can be fixedly mounted on the floor of a vehicle, such as the bottom structure of the vehicle body or the floor under the seats in an aircraft (especially an airplane) or a railway carriage. The crossbeam can provide sufficient space to receive two motor devices for two folding table top devices for two adjacent seats.

[0011] In a preferred embodiment, the first motor arrangement is designed as a worm gear motor with a first motor, in particular a DC motor, and preferably a non-self-locking worm gear drive on the motor side. Worm gear motors are very suitable for high torques at low speeds and can withstand high loads. In addition, worm gear drives are highly efficient, low-noise, relatively vibration-free during operation and can operate for a long time, and are therefore particularly suitable for this application. The worm gear drive on the motor side is preferably designed to be non-self-locking in a targeted manner to facilitate emergency release.

[0012] The first drive device may further include a drive shaft, one end of which is drivingly connected to the worm gear drive motor, and the other end of which is drivingly connected to the support arm device through another worm gear drive device on one side of the support arm, so that when the worm gear drive motor is triggered, the support arm is flipped relative to the base bracket around the first flip axis. The advantages of the worm gear drive are also applicable to the other worm gear drive device on the side of the support arm.

[0013] The worm gear drive motor can be mounted slightly rotated about its axis so that the drive shaft is tilted slightly forward (from the user's perspective when mounted) in the operating state, thereby reducing the space requirement. If two motors for two tabletops arranged side by side are mounted on a common base support, the two motors are preferably arranged partly one above the other in the receiving space of the base support and slightly rotated, and the drive shafts can have different lengths and run diagonally forward and upward in the operating state to minimize the installation space.

[0014] The other worm gear transmission device on the side of the support arm is preferably designed as a self-locking transmission device, so that stepless tilt adjustment can be achieved, and the support arm device connected to the table top can maintain a stable position relative to the support arm in any ideal and suitable use position and when external forces are applied.

[0015] In a preferred embodiment, the self-locking drive can have a worm mounted on the drive shaft, on which a device that can be clamped from the outside with a tool can be mounted for manually operating another worm gear drive on the side of the support arm. This makes it possible to use a tool, for example an Allen key or the like, to retract the table top into the folded position with these devices (e.g. screws) if necessary for emergency unlocking.

[0016] In a preferred embodiment, the support arm device has a main shaft and at least one push rod element rotatably mounted on the main shaft, the push rod element is rotationally driven by the first drive device, and is fixedly connected to the support arm so as to convert the rotational movement of the first drive device into the flipping movement of the support arm. The support arm can be fixed to the push rod element in a force-locking and / or geometrically locking manner. In some embodiments, the support arm can be clamped between the inner push rod element and the outer push rod element, and connected to the inner push rod element and the outer push rod element in a force-locking and / or geometrically locking manner through a fixing block and such a device. In another preferred embodiment, the inner push rod element can be integrally formed with the support arm to become a separate component. In this way, the inner push rod element is part of the support arm, so no fixing device and assembly steps are required.

[0017] A stop device may be provided to limit the range of the support arm's tilting about the first tilting axis. For example, the stop device may be formed by cylindrical pins in a worm wheel of another worm gear drive fixed to one side of the support arm, which pins abut against one or more counter pins fixed to the main shaft. The support arm has an adjustment range of more than 90° about the first tilting axis, preferably 90° to 110°, and most preferably about 100°. Any adjustment range less than 90° or greater than 110° may also be specified.

[0018] For the required inclination adjustment of the table top, for example of an inclination adjustment of approximately 30° or less, a stop is not required. The self-locking function of the other worm gear on the side of the support arm is sufficient. However, if necessary, a stop can also be provided for this purpose.

[0019] In a preferred embodiment, a spring device may be configured to assist the support arm to flip relative to the base support. For example, a spring device may be arranged and mounted to assist the motor-driven support arm to flip during the extension movement, at least in certain areas. The spring device may be configured such that when the tabletop is retracted, the tension of the spring device increases, thereby ensuring a smoother, jitter-free or less jitter retraction movement, while when the tabletop is extended, the spring device assists the motor through the spring force.

[0020] In a specific effective design of the above embodiment, the spring device may include a coil spring, one end of which is suspended from the main shaft of the support arm device and the other end is supported on the support arm. The coil spring is installed with a slight pre-tension so that it is in tension throughout the entire range of motion of the support arm and acts on the support arm. During the retracting movement, the tension of the coil spring increases, thereby supporting a smooth and bumpless movement when retracting the table top. When the table top is extended, the coil spring assists the motor with its elastic force.

[0021] In a particularly preferred embodiment, a further spring device may be arranged and mounted to assist the motor-driven tilting of the support arm during the retraction movement at least in certain areas. The further spring device may be arranged so that when the table top is extended, the spring device is tensioned and when the table top is retracted, it assists the motor to ensure a smoother retraction movement without vibration or with less vibration.

[0022] In a special design, the further spring device can have a further helical spring, one end of which is suspended on the push rod element of the support arm device and the other end is mounted on the rigid bearing part. The further helical spring is arranged with a small clearance to the rigid bearing part in the retracted state so as to act only in the second half of the extension movement, in particular to counteract the motor force at the end of the extension movement, so as to ensure a smooth and unimpeded extension movement and also to effectively suppress any upward or overswing of the support arm when the fully extended position is reached. Conversely, when the fully retracted position is reached, the first helical spring counteracts the motor force to effectively suppress any upward or overswing of the support arm there. The two spring devices thus combine to prevent the tabletop from moving out of the center of gravity in any case when reaching one of the end positions due to inertia, motor drive and spring tension. In addition, the two spring devices can also avoid or at least reduce the stick-slip effect or rocking sliding when the support arm is retracted or extended.

[0023] In principle, in addition to the helical spring, other types of spring means can also be used to achieve the above functions. Suitable damping means can also be provided instead of or in addition to the spring means to counteract overshoot of the support arm or tabletop means. However, the helical spring has proven to be particularly effective and advantageous due to its simple and strong construction.

[0024] The second motor device for driving and controlling the tabletop device to perform a tilting movement relative to the support arm about the second tilting axis can be realized in many ways, for example, a worm gear motor, a rotating shaft and a worm gear device can also be used. In a preferred embodiment, the second motor device is designed as a threaded spindle drive device, which has a motor, in particular a DC motor, and a threaded spindle driven to rotate by the motor, and the threaded spindle cooperates with a spindle nut connected to the support arm of the tabletop device to convert the rotational movement of the threaded spindle into a linear movement of the spindle nut. This provides a simple, robust and effective linear drive.

[0025] Furthermore, the second drive device may comprise a support arm, one end of which is hingedly connected to the support arm and the other end of which is hingedly connected to the fixed arm of the tabletop device so as to be relatively tiltable and movable. Furthermore, the support arm is drivingly connected to the spindle nut via a hinge so that the latter moves along the fixed arm. When the motor of the second motor device rotates, the spindle nut passes through the threaded spindle, thereby driving the support arm so that the tabletop device is folded out or folded in. During the unfolding movement, in particular in the unfolded position, the tabletop device is safely and stably supported on the support arm by the support arm.

[0026] Preferably, the motor of the second motor arrangement can be arranged to be switched off when a predetermined maximum motor current limit is exceeded upon reaching an end position which prevents further linear movement of the spindle nut. The motor is thus run up to the respective end position and switched off by the current limitation. A clamping protection can also be achieved by the current limitation. Such overcurrent fuses are well known and are usually already integrated in electric motors as motor protection to prevent thermal overload.

[0027] To improve safety, in a preferred embodiment, a switch may be arranged so that it is activated when the tabletop assembly is in the extended position. Thus, when the switch is triggered, the tabletop is prevented from retracting in the extended position. A mechanical switch or an electrical or electronic switch may be configured to provide a signal, such as to a controller, to prevent the tabletop from retracting in the extended position. Various switches may be used for this purpose, such as contact switches, reed relays, Hall sensors, and the like.

[0028] In some embodiments, the switch may be mounted on a support arm, which may further support a movably arranged, particularly longitudinally slidably guided push rod, which is arranged and configured such that when the table board device is in the extended position, the push rod engages one end of the table board device and then actuates the switch with its other end. As mentioned above, other switch forms may also be used as desired, including mechanical, electrical and electronic, contact and non-contact switches.

[0029] To further simplify the operation and provide more convenience, the table top device may further include a third driving device, which includes a third motor device, for driving and controlling the rotational movement of the table top around the rotation axis relative to the fixed arm. This means that the rotational positioning of the table top can also be performed by electric operation or motor drive.

[0030] The third drive device can in particular comprise a third electric motor with a preferably self-locking third worm gear mechanism. This allows the rotational position of the adjusted table top to remain relatively stable.

[0031] Preferably, a sliding clutch can be installed between the third worm gear transmission device and the table top, so that the table top can rotate relative to the third motor device, especially relative to the worm wheel of the third worm gear transmission device under the action of external force. When an external force of a certain minimum load is applied to the table top, although the third drive device is working, the table top can stop rotating, or even rotate in the opposite direction to the rotation direction of the third motor, so as to prevent the passenger from being injured when the motor is working or when the passenger collides with the table top. The sliding clutch can also realize manual and quick adjustment of the rotation position of the table top at any time.

[0032] Although the slip clutch can be implemented in different ways, in a particularly simple embodiment, the slip clutch has a damping device, which preferably has at least one O-ring, which is inserted between the third worm gear and the table top, in particular between the worm wheel of the third worm gear and the table top. It is also possible to provide a plurality of O-rings as damping devices. The worm wheel is connected to the table top via one or more O-rings in a manner that is sufficiently torsionally rigid so that when the worm wheel rotates, the table top also rotates. However, if necessary, the user has the option of stopping the table top or rotating it manually. Thus, anti-pinch protection is also provided.

[0033] In an embodiment of the invention, the third drive device may further include at least one end position switch, so that the tabletop is rotated by the third motor via the third worm gear until the motor switch of the end position is reached. Subsequently, the third motor is automatically switched off. If the passenger holds the tabletop, the third motor may be arranged to continue rotating only for a specified time and then automatically switch off. Preferably, one end position switch is assigned to each direction of rotation.

[0034] Further preferred embodiments of the invention can be seen from the claims, the following description of preferred embodiments and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings do not represent limiting embodiments of the subject matter of the present invention. The same reference symbols are used as much as possible in all drawings to represent the same parts or components, in which case, unless otherwise specified, the descriptions of all drawings apply accordingly. As shown in the figure:

[0036] Figure 1 is a perspective view of an embodiment of a folding tabletop device designed according to the present invention in a use position;

[0037] Figure 2A-2D yes Figure 1 The folding tabletop unit is in the retracted and folded position ( Figure 2A ) and extended and deployed positions ( Figure 2D ) perspective views at different positions between;

[0038] Figure 3 is an exploded view of a base bracket and a first driving device of a supporting arm device of a folding desktop device according to the present invention;

[0039] Figure 4 yes Figure 3 a cross-sectional perspective view of the middle base support with the first motor assembly mounted therein;

[0040] Figure 5 is a partial perspective view showing the first drive device and Figure 1 The interacting parts of the support arm assembly of the folding table assembly shown;

[0041] Figure 6 is a detailed cross-sectional view of a first drive device for a support arm device of a folding tabletop device;

[0042] Figure 7 is a cross-sectional view of an embodiment of a support arm device of a folding desktop device designed according to the present invention;

[0043] Figure 8 is a cross-sectional perspective view of the first driving device on one side of the support arm;

[0044] Fig. 9 is a detailed perspective view of a first spring device, which is mainly used to support the extension movement of the support arm device of the folding desktop device designed according to the present invention;

[0045] Fig.10 is a detailed perspective view of another spring device for supporting the retracting movement of the support arm device of the folding tabletop device designed according to the present invention;

[0046] Fig.11 is a side view of the support arm assembly with the table assembly in the deployed position;

[0047] Fig.12 The table board device of the folding table top device designed according to the present invention, the top view illustrates the second and third driving devices of the folding table top device from bottom to top;

[0048] Fig.13 yes Fig.12 A perspective cutaway view of the middle tabletop assembly showing a second drive assembly for the folding movement of the tabletop assembly;

[0049] Fig.14 is a perspective side view showing the table assembly in the deployed position;

[0050] Fig.15 A tabletop device of a folding tabletop device designed according to the present invention, showing a third driving device for rotating the tabletop in the form of a cross-sectional view; and

[0051] Fig.16 It is a top view of a tabletop device with a third driving device in a folding tabletop device designed according to the present invention. DETAILED DESCRIPTION

[0052] Figure 1 and Figure 2A-2D The folding tabletop device 1 for a vehicle designed according to the present invention is shown, which is particularly suitable for motor vehicles, for example, it can be installed on the rear seat console of the motor vehicle, and the user, passenger or vehicle occupant sitting in the back seat can use the folding tabletop device comfortably. In principle, the folding tabletop device can also be installed on the front seat of the car. It can also be used in other vehicles that use seats to carry passengers, such as aircraft, especially airplanes, rail vehicles or ships. Figure 1 The foldable desktop device 1 is shown in a fully extended and unfolded state. Figure 2A-2D The foldable desktop device 1 is shown in other positions.

[0053] according to Figure 1 As can be seen, the folding tabletop device 1 includes a base support 2, a support arm device 3 connected to the base support 2, and a tabletop device 4 connected to the support arm device 3. The support arm device 3 includes a support arm 6 rotatably mounted around a first flip axis A. The support arm can be rotated as shown in FIG. Figure 2A The fully retracted position shown and Figure 1 and Figure 2B-Figure 2D between the fully extended position shown. Figure 2AIn the retracted position shown, the support arm assembly 3 is in a horizontal position and the tabletop assembly 4 spans a substantially vertical plane, parallel and coplanar with the support arm 6. In this position, the support arm assembly 3 and the tabletop assembly 4 can be placed in a storage room, for example, near the base support 2, which is not described in detail here. Figure 1 and Figure 2B-Figure 2D In the extended position shown, the support arm device 3 with the table board device 4 extends upward from the storage compartment substantially vertically in order to support the table board device 4 at the top. A housing (not shown here) can be installed around the base bracket 2 to define the storage compartment. For example, the storage compartment can also be the interior space of the rear seat console.

[0054] The tabletop device 4 can be rotated or folded relative to the support arm 6 about a second turning axis B different from the first turning axis A, so that the tabletop device 4 can be rotated between a folded position and an unfolded position. Figure 2A and Figure 2B In the folded position shown, the tabletop device 4 and the support arm 6 are substantially in a straight line or in the same plane, while in the folded position shown in FIG. Figure 1 , Figure 2C and Figure 2D In the unfolded position shown, the tabletop device 4 is rotated 90° relative to the folded position, so that the tabletop device 4 is substantially perpendicular to the support arm 6 in the longitudinal direction, and the whole is substantially horizontally arranged. The second flip axis B is substantially perpendicular to the first flip axis A. The specific arrangement of the second flip axis B depends on the rotation position of the support arm device 3.

[0055] The tabletop device 4 also includes a fixing arm 7, which is Figure 1 Hidden in Figure 12-16 As shown in more detail in FIG. 1 , the fixed arm is hingedly connected to the support arm 6. There is also a table top 8, which is rotatably mounted on the fixed arm 7 around a rotation axis C different from the first tilt axis A and the second tilt axis B. Figure 1 , Figure 2C and Figure 2D In the fully extended and deployed position shown, the rotation axis C is perpendicular to the first flip axis A and the second flip axis B. The rotation axis C may intersect or be slightly offset with the first flip axis 1, and may also intersect or be slightly offset with the second flip axis B. However, the flip axes A and B may be freely defined and do not necessarily have to be as shown in the embodiment.

[0056] In the embodiment shown in the figure, the table top 8 is divided into a first table top half 8a and a second table top half 8b, which are rotatably connected to each other on both sides in the longitudinal direction by hinges 9. Therefore, the table top halves 8a and 8b can be selected as follows Figure 1 As shown, the table top 8 can be unfolded to provide a larger surface area, or it can be selected as shown. Figure 2A-2D The foldable closure shown can be used to reduce the surface area of ​​the table top or store it in a storage compartment. An embodiment with an integrated table top can also be provided.

[0057] According to the present invention, the folding tabletop device 1 has a plurality of motor-assisted drive devices, which can rotate the support arm device 3 and the tabletop device 4, and preferably, can also rotate the tabletop 8 to a desired position, so as to move the folding tabletop device 1 from Figure 2A The retracted, folded, stowed initial position shown in becomes Figure 1 In order to simplify the description, the process of changing the folding desktop device 1 from the stowed initial position to the use position is also referred to as "arranging" the folding desktop device 1, and the reverse process is also referred to as "stowing" the folding desktop device 1.

[0058] like Figure 1 As shown, the driving device includes a first driving device 11 associated with the support arm device 3, and the device includes a first motor device 12 for driving and controlling the support arm 6 to rotate around the first flip axis A relative to the base support 2. The driving device also includes a second driving device 13 installed on the table device 4, and the device includes a second motor device 14 for driving and controlling the rotational movement of the table device 4 relative to the support arm 6 around the second flip axis B. In addition, the table device 4 also includes an optional third driving device 16, see Figure 12-16 The device includes a third motor device 17 for driving and controlling the rotational movement of the table top 8 relative to the fixed arm 7 around the rotation axis C.

[0059] Now refer to Figure 3-Figure 16 Explain in more detail Figure 1 The components of the folding tabletop device 1 designed according to the present invention are shown. Figure 3 , the figure shows the main components of the base support 2 and the first drive device 11. The base support 2 has two parallel support legs 18a and 18b, which can be installed on the floor of a vehicle, such as a console of a rear seat of a motor vehicle, or on the floor under a seat in an airplane or train compartment, so as to stably fix the folding table device 1. The support legs 18a and 18b are connected to each other by a crossbeam 19, and a receiving space 21 is provided at the bottom of the crossbeam for receiving the first motor device 12. Figure 4 The cross member 19 with the receiving space 21 is shown from the bottom up, and the first electric machine arrangement 12 installed in the receiving space 21 is illustrated.

[0060] The first motor device 12 is designed here as a worm gear motor 22 with a first motor 23, a DC motor and a first worm gear 24 which is preferably not self-locking. The worm gear motor 22 can provide high torque at low speed, withstand high loads, run relatively quietly and without vibration, and is very suitable for the convenient application envisaged herein. It is robust and suitable for long-term operation. The first worm gear 24 in the worm gear motor 22 is preferably designed to be non-self-locking, so that emergency unlocking can be achieved.

[0061] like Figure 3 As shown, the first driving device also includes a driving shaft 26, one end of which is drivingly connected to the first worm gear transmission device 24. Figure 3 , Figure 4 and Figure 6 The middle is the lower end, and the other end is connected to the support arm device 3 through another worm gear transmission device 27. Figure 3 and Figure 6 The middle is the upper end, so that the support arm 6 can rotate around the first flip axis A relative to the base bracket 2 when the worm gear transmission motor 22 is driven.

[0062] The other worm gear transmission device 27 on the support arm side is preferably designed as a self-locking gear, and its worm 28 meshes with the worm wheel 29 on the support arm device 3. The other worm gear transmission device 27 in the upper part of the figure can be designed as a special self-locking device to achieve stepless tilt adjustment and safely maintain the stable position of the support arm device 3 and the table top 8 relative to the base bracket 2 in the use position at any inclination even when external forces are applied.

[0063] In the event of an emergency release, the device 30 can be grasped from the outside using a tool and the other worm gear 27 can be manually actuated. Figure 5 and Figure 6 It can be seen that an emergency unlocking device 30, such as a screw (such as a hexagon socket screw), can be fixed on the worm 28, and the worm 28 can be turned by a tool (especially a hexagon socket wrench) so as to manually turn the worm 28, thereby manually turning the position of the entire support arm device 3 relative to the base bracket 2 when necessary.

[0064] from Figure 3-Figure 5It can also be seen that a first drive device 11' can also be mounted on the base support 2 in order to operate a further tabletop device, not shown in detail here, in particular to extend it from the base support 2 and retract it into the base support. The further tabletop device can be connected to an adjacent seat, for example in a rear seat device of a motor vehicle. The first drive device 11' then comprises a first motor device 12', in which there is a worm gear motor 22', a drive shaft 26' and a further worm gear device 27', in which there is a further worm 28' and a further worm wheel 29'.

[0065] Especially from Figure 3-Figure 6 As can be seen in the figure, each worm gear drive motor 22, 22' can be installed with a slight rotation around its axis, so that the drive shaft 26, 26' is slightly tilted upward and backward (from the installation state and the direction of travel) to reduce the required space. Figure 4 and Figure 6 As shown, when two worm gear drive motors 22, 22' for two tabletop devices are installed in the base bracket 2, the two motors can be arranged one above the other and slightly rotated, and the drive shafts 26, 26' can be of different lengths and can extend obliquely to the rear and upward, so that the device structure is compact and the required space is minimized. In addition to the optional slight differences in the first drive devices 11, 11' that can reduce the installation space, the other parts of the support arm device 3, the tabletop device 4 and the drive devices 13, 16 can be designed in a basically similar manner for two desktops and can be arranged in a mirror-inverted manner. It is also possible to only equip one first drive device 11 that is only applicable to one tabletop device 4.

[0066] Figure 7 The support arm device 3 is shown in more detail in the form of a cross-sectional view. The main component of the support arm device 3 is the support arm 6, which has a circular opening 31 at one end for rotating the support arm 6. At the other end of the cantilever of the support arm 6, a Figure 7 The hinge member 32 shown (see Figure 12-14 ), through the hinge component 32, the support arm 6 is rotatably connected to the table top device 4 to achieve the folding down and retraction of the table top device 4 relative to the support arm device 3.

[0067] Back to Figure 7 (and refer to Figure 5 and Figure 8), in the illustrated embodiment, the support arm device 3 mainly comprises a main shaft 33, an inner bearing sleeve 34 as a pivot bearing, a worm gear 29 rotatably mounted relative to the main shaft 33, an inner push rod element 36, an outer push rod element 37, a coil spring 38 inserted between the drive elements 36 and 37, an outer bearing sleeve 39 for pivot mounting, and an outer sleeve 41. The inner bearing sleeve 34 is fixed to the inner push rod element 36 and is rotatably mounted on the main shaft. The outer bearing sleeve 39 is fixed to the outer push rod element 37 and is rotatably mounted on the outer sleeve 41, and the outer sleeve is fixed to the main shaft 33, such as by screws.

[0068] The worm wheel 29 can be connected to the inner push rod element 36 in a rotationally fixed manner by means of a screw set 42, while the outer push rod element 37 can be screwed to the inner push rod element 36 by means of another screw set 43. The support arm 4 can be clamped between the inner push rod element 36 and the outer push rod element 37 and connected to them in a rotationally fixed manner by means of a fixing block 44. In particular, Figure 8 As can be seen in the figure, one end of the fixing block 44 is fixed to the support arm 6 by a screw, and the other end of the fixing block 44 is engaged with the groove 46 on the inner push rod element 36 to form a positive rotation connection.

[0069] Although the embodiment shown here provides a support arm 6, an inner push rod element 36 and an outer push rod element 37, which are formed as separate parts and connected to each other, in principle, these elements 6, 36, 37 can also form an integral part. The multi-part embodiment allows the coil spring 38 to be installed in the inner space between the inner push rod element 36 and the outer push rod element 37, the function of which will be explained in detail below.

[0070] Figure 7 and Figure 8 It is further shown that in the embodiment shown, a worm gear 29' and further inner and outer push rod elements 36', 37' belonging to a further first drive device 11' associated with a further tabletop device are also included. These elements 29', 36', 37' do not differ from the elements 29, 36, 37 explained above, so the above description also applies. If the folding tabletop device 1 does not include further tabletop devices in addition to the tabletop device 4, the elements 29', 36' and 37' can be omitted.

[0071] The end stop device can be used to limit the rotation range of the support arm 6 around the first flip axis A. Figure 8As shown, the end stop can be located at the fulcrum between the worm wheel 29 and the spindle 33. In particular, a cylindrical pin 47 can be appropriately fixed to the surface of the worm wheel 29 as a stop to provide the required angular range for the rotational movement. One or more pins can be used as counter-stops, for example connected to the spindle 33. In the example shown, when the worm wheel 29 rotates, a pin 48, for example a grooved pin, passes through the spindle 33 and meshes with the cylindrical pin 47. Thus, the required adjustment range can be provided to be at least 90°, preferably 90°-110°, and particularly preferably about 100°. The adjustment range can be defined as required.

[0072] When the inclination of the table top 8 is adjusted to a certain degree, for example 30°, no stop is required. The self-locking function of the upper worm gear 27 is sufficient to achieve this.

[0073] Figure 7 The helical spring 38 shown separately in the figure forms a spring device 49, the purpose of which is to support the motor-assisted tilting of the support arm 6 in the sense of an extension movement, at least in certain areas. The helical spring 38 is slightly pre-tensioned when installed and becomes increasingly tighter when the folding table top device 1 is retracted. This ensures a smooth, impact-free or low-impact retraction movement. When the folding table top device 1 is extended, the helical spring 38 supports the first motor device 12 by its elastic force acting in the same direction of rotation. Fig. 9 A detailed perspective view of the interior of the inner push rod element 36 is shown, from which it can be seen that one end 45a of the coil spring 38 is suspended on the main shaft 33, and the other end 45b is engaged with the groove 50 on the edge of the opening 31 of the support arm 6 and is firmly fixed or supported on the support arm 6.

[0074] Fig.102 is a perspective view of the outer side of the worm gear 29 and the inner push rod element 36, from which it can be seen that another spring device 51 can also be optionally installed, whose function is to support the motor-assisted turning of the support arm 6 at least in certain areas. The other spring device 51 is tightened when the folding tabletop device 1 is extended to provide a smoother, impact-free and / or low-impact extension movement and assist the first motor device 12 to retract the folding tabletop device 1. To this end, the optional other spring device 51 may include another coil spring 52, which is wound around the outer side of at least one push rod element 36 and 37, in this case the outer side of the inner push rod element 36, one end 53a is firmly fixed to the inner push rod element 36 or the support arm 6, and the other end 53b is fixed to the rigid bearing part 54 on the base support 2. The free end 53b of the other coil spring 52 does not rest permanently on the rigid bearing part 54, but only contacts the rigid bearing part during the extension movement, and then the tension increases. Therefore, the other coil spring 52 does not work in the entire rotation range, but only in a part of the rotation range. The further helical spring 52 is effective in particular at the end of the extension movement, but ineffective at the end of the retraction movement.

[0075] Therefore, the two coil springs 38 and 52 are specially designed to assist the extension and retraction movements and prevent stick-slip effects or rocking slides, so that at the end of the extension or retraction movement, the coil springs 38 and 52 can effectively suppress the upward rush or overshoot of the support arm 6 when it reaches the fully extended position or the fully retracted position. Without these two springs, the tabletop device 4 may move out of the center of gravity when reaching one of the end positions due to inertia and the action of the motor, resulting in an overshoot of the tabletop device 4. The two mutually offset and coordinated coil springs 38 and 52 can effectively prevent the tabletop device 4 from such overshoot. In principle, in addition to the coil springs, other spring devices can also achieve the above functions. In addition to the spring devices 49 and 51, appropriate damping devices can also be provided to offset the overshoot of the tabletop device 4. The use of coil springs 38 and 52 can solve the overshoot problem very effectively, simply and advantageously. In principle, at least another coil spring 52 can be omitted.

[0076] Refer to Figure 7 and Fig.11 It can be seen that the support arm device 3 also includes a switch device 56 for detecting and indicating the unfolded position of the table board device 4. To this end, in the example shown, the switch device 56 includes a mechanically operable switch 57, a guide rail 58 mounted on the support arm 6, and a push rod 59. The push rod 59 is mounted in the guide rail 58 and moves longitudinally under the guidance of the guide rail. Under the biasing action of the biasing device, especially the coil spring 61, the push rod moves outward from the opening 31 of the support arm 6 toward the table board device 4. The table board device 4 is in Fig.11In the unfolded position shown, the push rod 59 is pushed into the guide rail 58 by the action of the coil spring 61, and then the inner end of the push rod 59 touches and drives the switch 57 which is also connected to the guide rail 58. For example, the switch 57 can provide an electrical signal to the controller, which is not shown in detail here, when activated to indicate that the tabletop device 4 is in the unfolded position. As long as the tabletop device 4 is in the unfolded position, the controller can prevent the folding tabletop device 1 from retracting to avoid the tabletop device 4 from colliding with other components inside the vehicle, such as the shell or the rear seat console, which may cause damage to the folding tabletop device 1 or vehicle components.

[0077] See also Figure 12-14 , the second drive device 13 with the second motor device 14 is shown in more detail, which is used to drive and control the rotational movement of the tabletop device 4 relative to the support arm 6 about the second tilting axis B. As shown in the figure, the second motor device 14 includes a threaded spindle 63 driven to rotate by a motor 62, in particular an electric motor, which cooperates with a spindle nut 64 to convert the rotational movement of the threaded spindle 63 into a linear movement of the spindle nut 64. The spindle nut 64 is mounted on a bearing seat 66 and can move longitudinally relative to the fixed arm 7 and the tabletop 8. A hinge 67 with a hinge axis 68 is connected to the bearing seat 66. The second drive device 13 also includes a support arm 69, one end of which is relatively rotatably connected to the bearing seat 66 by the hinge 67, and is thus relatively rotatably connected to the fixed arm 7 of the tabletop device 4. Therefore, the support arm 69 is also driven and connected to the spindle nut 64 by the hinge 67 and guided by the latter, so that it can move along the fixed arm 7. At the other end, the support arm 69 is rotatably connected to the support arm 6 via another hinge 71 and another hinge axis 72 .

[0078] When the second motor device 14 rotates, the bearing seat 66 with the spindle nut 64 moves linearly via the threaded spindle 63, thereby driving the support arm 69 via the hinge 67, so that the table device 4 will be folded inward or outward around the second flip axis B according to the rotation direction of the motor 62 of the second motor device 14. The support arm 69 can rotate relative to the support arm 6 around another hinge axis 72 via another hinge 71 to achieve the folding movement. During the folding movement and in the fully unfolded position, the fixed arm 7 is supported on the support arm 6 by the support arm 69 via the hinge 67.

[0079] Preferably, the motor 62 is arranged in such a way that when reaching the end position that prevents the spindle nut 64 from continuing to run, the motor will be turned off when the predetermined maximum current limit of the motor current is exceeded. Even if the end position is not reached, the motor 62 will be turned off immediately after reaching the motor current limit to ensure anti-pinch protection.

[0080] Fig.12 Display table device 4 (such as Figure 2A , Figure 2B ) is in the folded position, wherein the table top 8 and the support arm 69 are substantially parallel to the support arm 6, and Fig.14 The tabletop device 4 is shown in the unfolded position (eg Figure 1 , Figure 2C , Figure 2D As shown), the table top 8 is substantially perpendicular to the support arm 6, and the support arm 69 is obliquely aligned with the table top device 4 and the support arm 6 to form a cross brace and support the table top device 4 on the support arm 6.

[0081] See especially Fig.12 , Fig.15 and Fig.16 , the third drive device 16 and the third motor device 17 will be described in detail below, which are used to drive and control the rotational movement of the table top 8 relative to the fixed arm 7 around the rotation axis C. In principle, the rotational movement of the table top 8 can also be performed manually, but it is preferred to use the motor-assisted rotational movement of the table top 8, because it provides additional convenience and, together with the rotational movement of the support arm device 3 and the table top device 4, can achieve a fully automatic electric setting of the folding table top device 1, so that it is in a use position or a position suitable for storage in a storage room.

[0082] In the embodiment shown in the figure, the third motor device 17 has a third motor 73, in particular an electric motor or a worm gear motor with a third worm gear 74. In the preferred embodiment shown in the figure, the third worm gear 74 is self-locking.

[0083] It should be noted that the terms "first", "second", "third", etc., used herein do not indicate any order or importance of the designated elements, but are used to distinguish one element from one or more other similar or identical elements for ease of reference. The description of a "second" element or a "third" element or the like does not presuppose the existence of a "first" element or "first" and "second" elements or the like.

[0084] See especially Fig.15 , which shows in detail in the form of a cross-sectional view the tabletop device 4 with the third drive device 16 and its components. The tabletop device 4 includes a fixed arm 7, a tabletop 8 and a third motor 73 with a third worm gear transmission device, and the third worm gear transmission device 74 includes a worm wheel 76. The tabletop device 4 also includes a ring 77 connected to the bottom of the tabletop, and an end position locking device 78 is provided on the ring to provide a mechanical end stop for the 180° offset end position of the rotation of the tabletop 8. The associated brake pin 79 that cooperates with the end position locking device 78 to determine the end position is fixed to the fixed arm 7 together with the third motor 73.

[0085] When the table top 8 is rotated by the motor, a first switch 81 and a second switch 82 are further provided for the rotation end positions of the table top 8. Fig.16 It can also be seen that the end position switches 81 and 82 are mounted on the ring 77 and therefore also on the table top 8, and are positioned offset by 180° relative to the rotation axis C. The first switch 81 can be assigned to the turn-in end position of the table top 8, while the second switch 82 can be assigned to the turn-out end position of the rotation by 180°. When the folding table top device 1 is electrically operated, the table top 8 is rotated by the third worm gear transmission device 74 until one of the first end position switch 81 and the second end position switch 82 is reached. Each end position switch 81 and 82 can then provide an electrical signal to the controller, indicating that the respective rotation end position has been reached, at which time the controller can stop the third motor 73.

[0086] In the preferred embodiment of the folding tabletop device 1 designed according to the present invention shown in the figure, a sliding clutch 83 is installed between the worm wheel 76 of the third worm gear transmission device 74 and the tabletop 8. The sliding clutch 83 can apply an external force to manually rotate the tabletop 8 relative to the worm wheel 76 of the third worm gear transmission device 74. When the tabletop 8 is rotated by the motor, a person can apply a certain minimum load force to the tabletop to stop the tabletop 8 from rotating, or even make its rotation direction opposite to the rotation direction of the third motor 73. In this way, it is possible to prevent passengers from being injured when the engine is working, or from being injured due to collision between the passenger and the tabletop 8 in other cases. This method can also provide anti-pinch protection. In addition, the passenger can also quickly set or adjust the rotation position of the desktop by hand at any time.

[0087] In the embodiment shown in the figure, the sliding clutch 83 includes two O-rings 84, which are inserted and lightly clamped between the table 8 and the worm wheel 76 of the third worm gear 74 as a damping device. The worm wheel 76 is rotatably mounted on a sliding bearing 86, which is supported by a pin 87. The pin 87 is fixed to the table 8 with a screw, and the worm wheel 76 can rotate freely on or relative to the pin 87. When the worm wheel 76 rotates, the table 8 is lifted by the O-rings 84 for damping. The passenger can choose to stop or further adjust the table 8 manually.

[0088] The working principle of the folding desktop device 1 is as follows:

[0089] Assume that the folding table device 1 is in Figure 2AThe state shown, in which the support arm device 3 is fully retracted, the table board device 4 is folded in, and the table board 8 is folded closed and rotated to its original position. If the folding table top device 1 is now to be moved to the use position, the passenger can press a suitable control button. The simplest way is to press a button on the control panel or controller to start the automatic setting process of moving the folding table top device 1 to the use position. Then, the controller, which is not shown in detail here, appropriately controls the first drive device 11, the second drive device 13 and the third drive device 16 to perform the setting process. The first drive device 11 extends the support arm device 3 to Figure 2B The second drive device 13 unfolds the tabletop device 4 to the fully extended position shown in FIG. Figure 2C In the unfolded position shown in FIG, the table top 8 is substantially in a horizontal plane in this position. The third drive device 16 moves the table top 8 from Figure 2C Rotate to the indicated rotation position Figure 2D In this position, if the table top 8 has two hinged table top halves 8a, 8b, the user can unfold the table top halves to form a table top 8, such as Figure 1 As shown, the surface area of ​​the table top is enlarged.

[0090] If desired, the table top 8 can also be placed slightly tilted. To this end, the motor can set any desired inclination of the support arm 6 and the table top device 4. Any rotational position of the table top 8 can be adjusted by the motor. The rotational position of the table top 8 can also be adjusted manually.

[0091] If the folding table device 1 is to be stored in a storage room again, such as a console in the rear seat of a car, when the user controls or triggers the control device, the drive devices 11, 13, 16 will be activated in the opposite way to automatically turn in, fold and retract the folding table device 1. Figure 2A The location shown in .

[0092] Advantageously, the installation and retraction of the folding tabletop device 1 can be fully automated and controlled by the drive devices 11, 13 and 16. There is no risk of incorrect operation of the folding tabletop device 1, nor of damage to the folding tabletop device 1 or vehicle components or injury to the operator. The electric-assisted folding tabletop device 1 is characterized by ease of use and high comfort. It has a relatively simple structure, can be quickly and easily installed and stored, can be used flexibly, and is durable.

[0093] It is worth noting that the individual operations of extending the support arm device 3, unfolding the table plate device 4, and rotating the table plate 8 are described here as sequential operations one after another, only for the purpose of simplicity and clarity. The control device of the folding table top device 1 designed according to the present invention can well implement such a way that the first, second and third drive devices 11, 13 and 16 are operated substantially in parallel, so as to simultaneously perform the extension or retraction movement of the support arm device 3, the extension or retraction movement of the table plate device 4, and the rotation movement of the table plate 8 as parallel as possible. For example, the controller can instruct the second drive device 13 and the third drive device 16 to fold and rotate the table plate device substantially in parallel at the same time as long as the support arm device 3 is sufficiently located outside the storage room, thereby realizing these folding and rotation movements. In this way, the folding table top device 1 can be set up or put away very quickly, so that all parts can move in a coordinated and smooth manner, thereby further improving the aesthetics of the folding table top device 1 designed by the present invention.

[0094] An electric folding tabletop device 1 for a vehicle, in particular for a motor vehicle, comprises a base support 2, a support arm device 3, which is connected to the base support 2 and has a support arm 6, which is mounted to be rotatable around a first tilt axis A, and a tabletop device 4, which is connected to the support arm 3 and can rotate relative to the support arm 3 around a second tilt axis B. The tabletop device 4 has a fixed arm 7 hinged to the support arm 6 and a tabletop 8, which is mounted on the fixed arm 7 and can rotate around a rotation axis C. Each tilt axis A, B is equipped with a drive device 11, 13 with a motor device 12, 14 for driving and controlling the movement of the respective tilt axis A, B. Another motor-assisted drive device 16 can also be provided for driving and controlling the rotational movement of the tabletop 8 around the rotation axis C.

Claims

1. A folding tabletop device (1) for a vehicle, characterized in that: Base bracket (2); The support arm device (3) is connected to the base support (2) and has a support arm (6) which is installed flippably around a first flip axis (A), and the support arm can flip between a retracted position and an extended position. The support arm device (3) has a first drive device (11, 11') associated therewith, and the first drive device includes a first motor device (12, 12') for driving and controlling the flipping movement of the support arm (6) relative to the base support (2) around the first flip axis (A); as well as A tabletop device (4) coupled to the support arm (3) is arranged to be flipped relative to the support arm (3) around a second flip axis (B) different from the first flip axis (A), and the tabletop device (4) can be flipped between a folded position and an unfolded position, wherein the tabletop device (4) has a second drive device (13), and the second drive device includes a second motor device (13) for driving and controlling the flipping movement of the tabletop device (4) around the second flip axis (B) relative to the support arm (6). The table top device (4) comprises a fixed arm (7) connected to a support arm (6) in an articulated manner and a table top (8), wherein the table top is mounted on the fixed arm (7) and can rotate around a rotation axis (C) different from a first flip axis (A) and a second flip axis (B).

2. A folding tabletop device (1) according to claim 1, wherein the base bracket (2) includes two parallel supporting legs (18a, 18b), and the two supporting legs are connected to each other by a cross beam (19), wherein the cross beam (19) includes a receiving space (21) for accommodating the first motor device (12, 12').

3. A folding tabletop arrangement (1) according to claim 1, wherein the first motor arrangement (12, 12') is designed as a worm gear motor (22, 22') with a first motor (23) and a preferably non-self-locking worm gear (24).

4. The folding tabletop device (1) according to claim 3, wherein: The first driving device (11, 11') comprises a driving shaft (26, 26'), one end of which is drivingly connected to a worm gear transmission motor (22, 22'), and the other end of which is drivingly connected to a support arm device (3) via another worm gear transmission motor (27, 27'), so that when the worm gear transmission motor (22, 22') is started, the support arm (6) rotates around a first flip axis (A) relative to the base bracket (2).

5. A folding tabletop device (1) according to claim 4, wherein the other worm gear transmission motor (27, 27') is designed as a self-locking gear and includes a worm (28, 28'), on which a device (30) is installed, and the device (30) can be grasped from the outside with a tool to manually operate the other worm gear transmission motor (27, 27').

6. A folding tabletop device (1) according to any one of claims 1 to 4, wherein the support arm device (3) has a main shaft (33) and at least one push rod element (36, 37; 36', 37'), the push rod element is rotatably mounted on the main shaft (33), driven to rotate by a first drive device (11, 11'), and is connected to the support arm (6) in a rotationally fixed manner.

7. The folding tabletop device (1) according to any one of claims 1 to 4, wherein the stopping device (47, 48) limits the turning range of the support arm (6) around the first turning axis (A).

8. A folding tabletop device (1) according to any one of claims 1-4, wherein the spring device (49) is arranged and configured to support the flipping of the support arm (6) driven by a motor, that is, the extension movement within at least a certain area.

9. A folding tabletop device (1) according to claim 8, wherein the spring device (49) comprises a coil spring (38), one end (45a) of which is suspended on the main shaft (33) and the other end (45b) is against the groove (50) on the support arm (6).

10. The folding tabletop device (1) according to claim 8, wherein another spring device (51) is arranged and set to support the flipping of the support arm (6) driven by a motor, that is, the retracting movement within at least a certain area.

11. A folding tabletop device (1) according to claim 10, wherein the other spring device (51) includes another coil spring (52), one end (53) of the spring is suspended in the push rod element (36) of the support arm device (3), and the other end (53b) is against the rigid bearing part (54).

12. A folding table top device (1) according to any one of claims 1-4, wherein the second motor device (14) includes a threaded spindle (63) driven to rotate by a motor (62), and the spindle cooperates with a spindle nut (64) on a fixed arm (7) coupled to the table top device (4) to convert the rotational motion of the threaded spindle (63) into linear motion of the spindle nut (64).

13. According to the folding table top device (1) described in claim 12, the second driving device (13) includes a support arm (69), one end of which is hinged to the support arm (6), and the other end is relatively rotationally and slidingly connected to the fixed arm (7) of the table top device (4) through a hinge (67), and the support arm (69) is further driven and connected to the spindle nut (64) through a hinge (67), thereby sliding along the fixed arm (7).

14. A folding table top arrangement (1) according to claim 12, wherein the motor (62) of the second motor arrangement (14) is arranged to be switched off when a predetermined maximum current limit of the motor current is exceeded when reaching the end position.

15. The folding table top device (1) according to any one of claims 1 to 4, wherein the switch (57) is installed and arranged to be activated when the table board device (4) is in the extended position.

16. A folding table top device (1) according to claim 15, wherein the switch (57) is mounted on a support arm (6), and the support arm (6) also has a movable push rod (59), one end of the push rod is engaged with the table top device (4), and the other end is used to drive the switch (57).

17. A folding table top device (1) according to claim 1, wherein the table top device (4) includes a third driving device (16), and the third driving device includes a third motor device (17), which is used to drive and control the rotational movement of the table top (8) around the rotation axis (C) relative to the fixed arm (7).

18. The folding tabletop device (1) according to claim 17, wherein the third drive device (16) comprises a third motor (73) and a third worm gear transmission device (74) which is preferably self-locking.

19. According to the folding table top device (1) described in claim 17, a sliding clutch (83) is installed between the third worm gear transmission device (74) and the table top (8) to facilitate the table top (8) to rotate relative to the third motor device (17), especially relative to the third worm gear transmission device (71) under the action of external force.

20. The folding tabletop device according to claim 19, wherein the sliding clutch (83) comprises a damping device, which preferably comprises at least one O-ring (84), which is inserted between the third worm gear transmission device (74) and the tabletop (8).

21. The folding tabletop device according to any one of claims 17 to 20, wherein the third drive device (16) comprises at least one end position switch (81, 82).

22. The foldable tabletop device for a vehicle according to claim 1, characterized in that: The vehicle is a motor vehicle.

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