Table plate capable of being lifted and overturned

Abstract

The invention relates to the field of automobiles, and provides a liftable turnover table board which comprises a second motor, the driving end of the second motor is connected with a table board body through a driving mechanism, a first motor is arranged on the bottom side of the right end of the table board body, the driving mechanism comprises a rotating disc located at the driving end of the second motor and connected through a rope body, and a lifting assembly is arranged on the outer wall of the rope body. The lifting assembly comprises a hinge located on the outer wall of the rope body, and the rear end of the hinge is slidably connected with a guide rail. Through a double-motor structure that a second motor drives lifting and a first motor drives overturning, full-process automation of'ascending, overturning and withdrawing 'of the table board is achieved, complex linkage design of a traditional mechanical structure is avoided, and the second motor is matched with a photoelectric sensor on a guide rail, so that the lifting height error of the table board is smaller than or equal to 1 mm; the encoder at the shaft end of the motor realizes that the overturning angle error is less than or equal to 0.5 degree, the surface is horizontal after the table plate is unfolded, electronic equipment, water cups and other articles are adaptively placed, and precise action control is realized through cooperative driving of the two motors.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, and specifically to a table board that can be lifted and flipped. Background Art

[0002] In the field of automobiles, with the improvement of the functional requirements of in-vehicle office work, mobile commerce, and special vehicles, as an important component for expanding the in-vehicle space, the use scenarios of in-vehicle table boards have extended from the back rows of traditional luxury commercial vehicles to various vehicle types such as ambulances and SUV camping vehicles. Users' requirements for table boards not only include the basic load-bearing function, but also require flexible space storage capabilities, precise position control, and durability to adapt to the in-vehicle vibration environment. Especially in the narrow in-vehicle space, how to achieve the automated operation of the table board "ready to use when unfolded and not occupying space when stored" has become an important topic in in-vehicle interior design.

[0003] Currently, most in-vehicle table boards on the market adopt single-motor drive or pure mechanical link structures: The single-motor drive solution needs to switch the lifting and flipping functions through a complex gear set, resulting in low transmission efficiency, and it is easy to generate position deviations due to inertia during the action switch. The measured height error can reach 5 - 10 mm, which cannot meet the flatness requirements for placing electronic devices; while the pure mechanical structure, although with lower costs, relies on manual adjustment, has cumbersome operations and is difficult to accurately control the flipping angle, resulting in poor user experience. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a table board that can be lifted and flipped, which solves the problems of low transmission efficiency and easy generation of position deviations due to inertia during the action switch.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A table board that can be lifted and flipped, including a second motor, the driving end of the second motor is connected to a table board through a driving mechanism, and a first motor is arranged at the bottom side of the right end of the table board.

[0006] Preferably, the driving mechanism includes a rotating disk connected to the driving end of the second motor through a rope body, and a lifting component is arranged on the outer wall of the rope body.

[0007] Preferably, the lifting component includes a hinge arranged on the outer wall of the rope body, and the rear end of the hinge is slidably connected to a guide rail.

[0008] Preferably, the rope body is made of high-strength steel wire rope, its tensile strength ≥ 1800 MPa, and the diameter range is 1.5 - 3 mm.

[0009] 5. The table board that can be lifted and flipped according to claim 1, wherein the driving end of the first motor is connected to the table board.

[0010] Preferably, the guide rail is made of aluminum alloy, with a U-shaped cross-section and a self-lubricating coating on the inner side.

[0011] A lifting and flipping step of a tabletop includes the following steps: Step 1: Lifting stage, Motor 2 starts, driving the rope body to move in a cycle along the rotating disc, and pulling the tabletop to rise along the guide rail to a preset height of 300 mm through the hinge and then stopping; Step 2: Flipping stage, Motor 1 starts, driving the tabletop to rotate 90 degrees around the bottom side of its right end to the use position; Step 3: Retracting stage, after Motor 1 reverses to reset the tabletop, Motor 2 reverses to lower the tabletop to the initial position.

[0012] Preferably, a delay of 0.5 - 1 second is provided between the lifting stage and the flipping stage to ensure that the tabletop is completely stationary before starting the flipping action.

[0013] Preferably, it further includes a control unit for: receiving user instructions and coordinating the start and stop timings of Motor 1 and Motor 2; real-time monitoring of the tension of the rope body, and triggering an emergency stop when the tension exceeds the threshold.

[0014] Preferably, the control unit includes: Position feedback module: detecting the real-time height of the tabletop through an optoelectronic sensor provided on the guide rail; Angle feedback module: monitoring the flipping angle of the tabletop through an encoder provided at the shaft end of Motor 1.

[0015] Working principle: When the tabletop needs to be used, after the user triggers the instruction, the control unit starts Motor 2, driving the rotating disc to wind up the high-strength steel wire rope, making the hinge slide upward along the inner guide rail, raising the tabletop to a preset height of 300 mm. After pausing for 0.5 - 1 second until the tabletop is stationary, Motor 2 drives the rotating shaft of the tabletop to flip 90 degrees, and at this time, items can be placed. After using, when the retracting instruction is triggered, Motor 1 first reverses to reset the tabletop, and after a delay of 0.5 second, Motor 2 reverses to release the rope to let the tabletop descend uniformly until it is retracted to the original position.

[0016] The present invention provides a liftable and flippable tabletop. It has the following beneficial effects: 1. Through the dual-motor structure with Motor 2 for driving lifting and Motor 1 for driving flipping, the present invention realizes the full-process automation of "rising - flipping - retracting" of the tabletop, avoiding the complex linkage design of traditional mechanical structures. Motor 2 cooperates with the optoelectronic sensor on the guide rail to make the height error of the tabletop lifting ≤ 1 mm; the encoder at the shaft end of Motor 1 realizes the flipping angle error ≤ 0.5°, ensuring that the surface of the tabletop is horizontal after unfolding, suitable for placing items such as electronic devices and water cups. The dual motors cooperate to drive, realizing precise motion control.

[0017] 2. The rope body of the present invention uses high-strength steel wire ropes with a tensile strength ≥ 1800 MPa, having the properties of tensile strength and wear resistance. The inner side of the U-shaped aluminum alloy guide rail is sprayed with a PTFE self-lubricating coating, eliminating the need for additional maintenance. The high-strength materials and self-lubricating design enhance durability and stability. Brief Description of the Drawings

[0018] Figure 1 It is a plan view of the present invention.

[0019] Among them, 1. Hinge; 2. Motor 1; 3. Motor 2; 4. Table board; 5. Guide rail; 6. Rope body; 7. Rotary disk. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] Embodiment: Please refer to the attached Figure 1 , the embodiment of the present invention provides a liftable and rotatable table board, including a motor 2, the driving end of the motor 2 is connected to a table board 4 through a driving mechanism, and a motor 1 is arranged at the bottom side of the right end of the table board 4; Specifically, the motor 1 uses a micro servo motor, and the drive shaft is directly connected to the rotary shaft at the bottom of the table board through a coupling to achieve a 90-degree flipping action of the table board, which is suitable for the compact space of automotive interiors. The motor 2 selects a low-noise stepper motor, and the driving end is coaxially connected to a rotary disk 7 through a synchronous belt pulley to ensure the stability of the transmission of the rope body 6.

[0022] The driving mechanism includes a rotary disk 7 connected to the driving end of the motor 2 through a rope body 6. An elevating assembly is arranged on the outer wall of the rope body 6. The elevating assembly includes a hinge 1 on the outer wall of the rope body 6. The rear end of the hinge 1 is slidably connected to a guide rail 5. The rope body 6 uses high-strength steel wire ropes with a tensile strength ≥ 1800 MPa and a diameter range of 1.5 - 3 mm. The driving end of the motor 1 is connected to the table board 4. The guide rail 5 is made of aluminum alloy, and its cross-section is U-shaped, with a self-lubricating coating on the inner side; Specifically, the rope body 6 is made of high-strength steel wire rope with a diameter of 1.5 mm, and its tensile strength reaches 2000 MPa. The surface is treated with galvanized anti-rust treatment and wound in the spiral groove of the rotating disk 7. The circulating traction is realized by driving of the second motor 3. The guide rail 5 is an aluminum alloy profile with a U-shaped cross-section, and its inner side is sprayed with a PTFE self-lubricating coating, and the friction coefficient is ≤0.1. The hinge 1 is made of stainless steel and is fixedly connected to the rope body 6. The slider is partially embedded in the U-shaped groove of the guide rail 5 to realize linear sliding along the guide rail and adapt to the change of the traction direction of the rope body.

[0023] A lifting and flipping step of a table board includes the following steps: Step 1: Lifting stage. The second motor 3 is started to drive the rope body 6 to move in a cycle along the rotating disk 7, and the table board 4 is pulled along the guide rail 5 by the hinge 1 and stopped after rising to a preset height of 300 mm. Step 2: Flipping stage. The first motor 2 is started to drive the table board 4 to rotate 90 degrees around the bottom side of its right end to the use position. Step 3: Retracting stage. After the first motor 2 reverses to reset the table board 4, the second motor 3 reverses to lower the table board 4 to the initial position.

[0024] A delay of 0.5 - 1 second is provided between the lifting stage and the flipping stage to ensure that the table board 4 is completely stationary before starting the flipping action.

[0025] It further includes a control unit for: receiving user instructions and coordinating the start-stop timing of the first motor 2 and the second motor 3; real-time monitoring of the tension of the rope body 6, and triggering an emergency stop when the tension exceeds the threshold.

[0026] The control unit includes: Position feedback module: detecting the real-time height of the table board 4 through the optoelectronic sensor provided on the guide rail 5; Angle feedback module: monitoring the flipping angle of the table board 4 through the encoder provided at the shaft end of the first motor 2.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liftable and rotatable tabletop, characterized in that: It includes a second motor (3), and the driving end of the second motor (3) is connected to a tabletop (4) through a driving mechanism. A first motor (2) is arranged at the bottom side of the right end of the tabletop (4).

2. The liftable and rotatable tabletop according to claim 1, wherein, The driving mechanism includes a rotating disk (7) connected to the driving end of the second motor (3) through a rope body (6), and a lifting assembly is arranged on the outer wall of the rope body (6).

3. The liftable and rotatable tabletop according to claim 2, characterized in that, The lifting assembly includes a hinge (1) on the outer wall of the rope body (6), and the rear end of the hinge (1) is slidably connected to a guide rail (5).

4. A liftable and rotatable tabletop according to claim 1, characterized in that, The rope body (6) is made of high-strength steel wire rope, with a tensile strength ≥ 1800 MPa and a diameter range of 1.5 - 3 mm.

5. A liftable and rotatable tabletop according to claim 1, characterized in that, The driving end of the first motor (2) is connected to the tabletop (4).

6. A liftable and rotatable tabletop according to claim 1, characterized in that, The guide rail (5) is made of aluminum alloy, with a U-shaped cross-section and a self-lubricating coating on the inner side.

7. A lifting and flipping step of a tabletop, using a liftable and flippable tabletop as described in any one of claims 1-6, characterized in that, It includes the following steps: Step 1: Lifting stage. The second motor (3) starts, drives the rope body (6) to move in a cycle along the rotating disk (7), and pulls the tabletop (4) to rise along the guide rail (5) to a preset height of 300 mm and then stops through the hinge (1). Step 2: Flipping stage. The first motor (2) starts and drives the tabletop (4) to rotate 90 degrees around the bottom side of its right end to the use position. Step 3: Retracting stage. After the first motor (2) reverses to reset the tabletop (4), the second motor (3) reverses to lower the tabletop (4) to the initial position.

8. The lifting and flipping steps of a tabletop according to claim 7, characterized in that, A delay of 0.5 - 1 second is provided between the lifting stage and the flipping stage to ensure that the tabletop (4) is completely stationary before starting the flipping action.

9. The lifting and flipping steps of a tabletop according to claim 7, characterized in that, It also includes a control unit for: receiving user instructions and coordinating the start-stop timing of the first motor (2) and the second motor (3); real-time monitoring the tension of the rope body (6), and triggering an emergency stop when the tension exceeds the threshold.

10. The lifting and flipping steps of a tabletop according to claim 7, characterized in that, The control unit includes: Position feedback module: detecting the real-time height of the tabletop (4) through a photoelectric sensor arranged on the guide rail (5). Angle feedback module: monitoring the flipping angle of the tabletop (4) through an encoder arranged at the shaft end of the first motor (2).

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