Electrically-driven folding table plate

Abstract

The utility model relates to an electrically-driven folding table plate, and belongs to the technical field of vehicle seat accessory equipment. The structure comprises an upper table plate assembly, a lower table plate assembly, a table plate support, an electric transmission system, a transmission shaft, a left connecting rod system, a right connecting rod system, a connecting rod installation support, a torsion spring assembly and an installation support. The electric transmission system drives the transmission shaft to rotate after being decelerated through a multi-stage gear and a worm, the transmission shaft drives the left and right connecting rods to cooperatively act, and automatic turning opening and closing of the table board are achieved. The left and right torsion springs are used for providing pre-tightening torque, eliminating connecting rod gaps and improving structural stability. The structure has the advantages of being accurate in electric control, synchronous in overturning, convenient to install, high in modularization integration level and the like, and is suitable for seat systems of airplanes, high-speed rails, passenger cars and the like.

Description

Technical Field

[0001] This utility model relates to the field of vehicle seat accessories, and more specifically to an electrically driven folding table. Background Technology

[0002] As transportation becomes more comfortable and intelligent, seat systems in high-speed trains, airplanes, and buses are increasingly integrating auxiliary function components. Among these, the flip-up table is an important component for passengers to eat, write, or place personal belongings, and its structure and ease of operation directly affect the riding experience.

[0003] Most currently used seat tray tables are mechanically folding structures, requiring passengers to manually flip and retract them. These structures typically use simple hinges or spring-loaded joints to achieve the folding function. While they meet basic usage requirements, they still have the following drawbacks:

[0004] 1. Inconvenient to operate and low level of intelligence: Traditional structures rely on manual force to rotate, which is not user-friendly for elderly or mobility-impaired users and does not conform to the current development trend of automated and intelligent cockpits;

[0005] 2. Low structural fit and poor stability: After repeated use, gaps may appear in the mechanical fit parts, causing the table to loosen and wobble, affecting the passenger experience;

[0006] 3. Unstable flipping process and lack of power assistance: The lack of a power mechanism for control leads to uneven force during the flipping process, which can easily cause problems such as jamming and falling, posing certain safety hazards.

[0007] 4. Complex installation and poor adaptability: Some tabletop structures are integrally molded with the seats or use customized installation methods, which is not conducive to standardized and modular configuration, and makes maintenance and replacement inconvenient.

[0008] To address the aforementioned issues, there is an urgent need for an electrically driven folding table structure that is simple in structure, reliable in drive, stable in motion, and highly adaptable, so as to improve the functionality of the seating system while meeting the needs of modern passengers for an intelligent, convenient, and high-quality riding environment. Utility Model Content

[0009] The purpose of this utility model is to provide an electrically driven folding table with advantages such as simple structure, automatic control, and convenient operation. It can realize stable flipping and structural integration of the table and is suitable for application scenarios where the space behind the seat is limited.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] An electrically driven folding tabletop includes:

[0012] The tabletop body consists of the upper tabletop assembly and the lower tabletop assembly;

[0013] The tabletop bracket is connected to the lower tabletop assembly.

[0014] A speed reduction drive assembly is mounted on a tabletop bracket, and the speed reduction drive assembly includes a power output end;

[0015] A drive shaft, arranged laterally, is connected to the output end of the speed reduction drive assembly;

[0016] A left linkage system includes at least one first left linkage, which is fixedly connected to a drive shaft;

[0017] The right linkage system includes at least one first right linkage, which is hinged to the lower tabletop assembly.

[0018] A tabletop mounting bracket is used to mount the tabletop bracket onto the seat structure.

[0019] Preferably, the speed reduction drive assembly includes a motor and a speed reduction mechanism, wherein the speed reduction mechanism is provided with a single-stage gear set and a worm gear structure.

[0020] Preferably, the drive shaft is fixed to the left connecting rod system via a key connection or interference fit.

[0021] Preferably, the first right connecting rod is hinged to the lower table panel assembly via a pin.

[0022] Preferably, the tabletop body is rotatable between vertical and horizontal, and the drive assembly is used to control its rotatable movement.

[0023] Preferably, the table mounting bracket is an integral injection molded part and has multiple through holes for connecting to the seat back frame.

[0024] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] 1. Automated drive control, convenient operation: Users can control the table to flip by buttons or the seat's electric control system, avoiding the laborious and cumbersome traditional manual operation.

[0026] 2. Simple structure and high integration: This structure realizes the movement of the table through a reduction drive component and a single-sided linkage transmission. The structure is compact and easy to install and use in confined spaces such as the back of a seat.

[0027] 3. Flexible installation and strong adaptability: The tabletop mounting bracket is an independent component, which can be installed using screws, clips, through holes and other methods according to different seat frame forms, making it highly adaptable.

[0028] 4. Smooth movement and good stability: The drive shaft drives the linkage system to achieve stable rotation, without the need for complicated debugging. The operation is smooth and highly reliable.

[0029] 5. Modular component design for easy maintenance: The drive module, table body, and linkage structure can all be replaced independently, which is beneficial for future maintenance and system upgrades. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 This is an exploded view of the structure of this utility model.

[0032] Figure 2 This is a structural schematic diagram of the tabletop mounting bracket of this utility model.

[0033] Figure 3 This is a schematic diagram of the motor and transmission structure of this utility model.

[0034] Figure 4 This is an enlarged view of section A of this utility model.

[0035] Figure 5 This is a schematic diagram of the torsion spring gap-eliminating structure of the present invention.

[0036] 1-Left side mounting bracket for the tabletop; 2-Upper tabletop assembly; 3-Left side connecting rod mounting bracket; 4-First gearbox housing; 5-Left side torsion spring; 6-First left connecting rod; 7-Second left connecting rod; 8-Drive shaft; 9-Tabletop bracket; 10-Lower tabletop assembly; 11-Second stage worm gear; 12-Second stage gear; 13-First stage gear set; 14-First stage gear set shaft; 15-Drive shaft worm wheel; 16-Motor; 17-Second gearbox housing; 18-Right side connecting rod mounting bracket; 19-Right side torsion spring; 20-First right connecting rod; 21-Second right connecting rod; 22-Right side mounting bracket for the tabletop. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example

[0039] In this embodiment, an electrically driven folding table, such as Figure 1 and Figure 2 As shown, it includes: upper table panel assembly 2, lower table panel assembly 10, table panel bracket 9, electric drive system, drive shaft 8, left linkage system, right linkage system, left linkage mounting bracket 3, right linkage mounting bracket 18, left torsion spring 5, right torsion spring 19, left table panel mounting bracket 1 and right table panel mounting bracket 22.

[0040] The upper tabletop assembly 2 and the lower tabletop assembly 10 together constitute the tabletop body. The upper tabletop assembly 2 is the user contact surface layer, and its panel can be made of materials such as ABS engineering plastic or aluminum alloy covered with fire-retardant leather, which have the characteristics of being lightweight, fire-resistant, and scratch-resistant. Functional areas can be divided by applying film or laser etching. The lower tabletop assembly 10 is located below the upper tabletop and is usually made of stamped steel plate or one-piece injection molded structure, which has good strength and is used to withstand the bending moment generated by the tabletop during operation.

[0041] The tabletop support 9, as the core load-bearing component of the entire transmission and support system, adopts a thick plate steel stamping and welding structure or a high-strength plastic one-piece molding structure. It is fixedly connected to the tabletop lower plate assembly 10 by screws or clips, providing high-strength connection performance and repeated assembly capability. The support is equipped with drive shaft mounting holes, motor and reduction gear mounting positions, as well as multiple limit positioning grooves to ensure accurate movement trajectory of the transmission components and improve the overall structural coordination and durability.

[0042] like Figure 3 and Figure 4 As shown, the electric drive system consists of a motor 16, a primary gear set 13, a primary gear set shaft 14, a secondary gear 12, a secondary worm gear 11, and a drive shaft worm wheel 15. The motor 16 is preferably a low-speed, high-torque brushed DC motor or a permanent magnet stepper motor, capable of communicating with the control motherboard to implement various attitude control strategies. The drive system is arranged inside the first gearbox housing 4 and the second gearbox housing 17. The housing material can be flame-retardant plastic or die-cast aluminum alloy, possessing good structural strength and fatigue resistance, and facilitating modular replacement.

[0043] The drive shaft 8 is horizontally inserted within the tabletop support 9, serving to evenly transmit power to the connecting rod structures on both sides. One end is keyed to the first left connecting rod 6, and the other end is interference-fitted to the second right connecting rod 21, ensuring sensitive motion response and high transmission accuracy. To prevent loosening due to high-frequency vibration, a retaining ring, anti-reverse washer, or other structures can be added to the shaft end.

[0044] The left linkage system consists of the first left linkage 6 and the second left linkage 7, while the right linkage system consists of the second right linkage 21 and the first right linkage 20. The four linkages form a symmetrical structure, connected as follows: the drive shaft rotates the first left linkage 6 and the second right linkage 21; the second left linkage 7 and the first right linkage 20 are respectively connected to the lower tabletop assembly 10 via pins to form hinge pairs, enabling control of the tabletop's vertical tilting. All linkages can be made of stamped steel plates, die-cast aluminum parts, or fiberglass-reinforced plastics, requiring a balance of strength and weight reduction to minimize motor load.

[0045] The left connecting rod mounting bracket 3 and the right connecting rod mounting bracket 18 are rotating bearing seats for the left and right connecting rods, employing a double-ear bracket or L-shaped sliding groove structure, and forming a rotating pair with a shaft pin. These brackets are directly fixed to the tabletop bracket 9, providing stable rotational support and preventing structural deformation or torsion caused by eccentric forces during movement.

[0046] like Figure 1 As shown, the left torsion spring 5 and the right torsion spring 19 are respectively disposed between the second left connecting rod 7 and the first right connecting rod 20, and their other ends are connected to the spring mounting holes embedded in the tabletop assembly 2. The torsion springs are high-strength alloy steel springs with an initial angle, and their preload direction is consistent with the tabletop flipping and opening direction. After the tabletop is opened, they still maintain a continuous torque on the connecting rod, thereby offsetting the mechanism clearance and improving the structural stability and user feel during use.

[0047] The mounting bracket 1 on the left side of the table and the mounting bracket 22 on the right side of the table are responsible for installing the entire structure onto the internal metal frame of the seat back. The mounting brackets adopt a universal slot-type guide rail or snap-on design, facilitating rapid assembly by the seat manufacturer during final assembly and also simplifying later maintenance or replacement. The connection method can be achieved through bolt tightening, sliding groove limiting, or spring clips, allowing for flexible selection based on different seat designs.

[0048] During use, users can activate the table system via buttons, capacitive touch controls, or the vehicle control system interface located on the armrest or seat side. After motor 16 starts, the output power is sequentially transmitted to the primary gear set 13, primary gear set shaft 14, secondary gear 12, and secondary worm gear 11, ultimately reaching the drive shaft 8 via the drive shaft worm wheel 15, achieving high-precision, low-speed, high-torque output. The rotation of drive shaft 8 drives the left and right linkage systems to work together, causing the table assembly 2 to slowly flip from a vertically folded state to a horizontal operating state. The flipping process lasts approximately 2-4 seconds, with a smooth and shock-free motion. The closing process is controlled by the motor in the reverse direction, also resulting in a smooth reset.

[0049] To enhance system safety, the following functional modules can be integrated into the electrical control system: overcurrent protection, limit detection, obstacle recognition (such as hand-pinching protection), and angle sensor feedback. If an obstruction or abnormal load is detected, the motor will immediately stop running and sound an alarm to prevent pinching or damage to the mechanism.

[0050] This utility model also features excellent modularity, with all key components (including the motor, gearbox, connecting rod, torsion spring, and table) being independent units, facilitating disassembly and maintenance. It is particularly suitable for large-scale seat production, enabling rapid assembly line operations. The entire structure is highly integrated and easy to install, applicable to various high-end transportation seats, such as airplane economy / business class seats, high-speed rail seats, urban rail train seats, business passenger vehicle seats, and rear seats in driverless taxis.

[0051] This embodiment can also be extended to other application forms, such as:

[0052] Add a USB charging port, a wireless charging area, or a laptop mounting structure to the tabletop assembly 2;

[0053] The control motherboard is embedded in the structure and connected to a CAN or RS485 communication interface to achieve network control with the whole vehicle / train.

[0054] Sensor modules are arranged in the space of the table bracket 9 to realize seat status recognition or linkage functions (such as automatically retracting the table during takeoff and landing).

[0055] By combining the electric tilt mechanism of the seat with other controls, the overall level of human-machine interaction and intelligence in the cabin is improved.

[0056] In summary, this utility model achieves multi-objective optimization through a compact and precise structural design, including structural mechanical stability, smooth electric motion, precise linkage control, and quiet and reliable operation. It also has good product integration and industrial adaptability, meeting the comprehensive requirements of current high-end ride systems for safety, comfort, intelligence, and maintainability.

[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrically driven folding table board, characterized in that, The utility model relates to a table board structure of a seat, comprising: a table board body, which is composed of a table board upper plate assembly (2) and a table board lower plate assembly (10); a table board support (9) connected with the table board lower plate assembly (10); a speed reduction drive assembly installed on the table board support (9), wherein the speed reduction drive assembly comprises a power output end; a transmission shaft (8) transversely arranged and connected with the output end of the speed reduction drive assembly; a left connecting rod system, which comprises at least one first left connecting rod (6) fixedly connected with the transmission shaft (8); a right connecting rod system, which comprises at least one first right connecting rod (20) hingedly connected with the table board lower plate assembly (10); a table board mounting support for mounting the table board support (9) on a seat structure.

2. The electrically-driven folding table board of claim 1, wherein: The speed reduction drive assembly comprises a motor (16) and a speed reduction mechanism, wherein the speed reduction mechanism is provided with a primary gear set (13) and a worm gear structure.

3. The electrically-driven folding table board of claim 1, wherein: The transmission shaft (8) is fixedly connected with the left connecting rod system through key connection or interference fit.

4. The electrically-driven folding table board of claim 1, wherein: The first right connecting rod (20) is hingedly connected with the table board lower plate assembly (10) through a pin shaft.

5. The electrically-driven folding table board of claim 1, wherein: The table board body can be turned between vertical and horizontal positions, and the drive assembly is used for controlling the turning movement of the table board body.

6. The electrically-driven folding table board of claim 1, wherein: The table board mounting support is an integral injection molding part and is provided with a plurality of through holes for being connected with a seat back frame.

Images