Folding table plate capable of automatically ascending and descending

Abstract

The utility model discloses an automatic lifting folding table plate which comprises a folding table plate body and a lifting module, the lifting module is composed of a shell, a lifting base, a lead screw, a motor, a main board and a travel switch, the motor drives the lead screw to rotate through a synchronous belt, a lead screw nut drives the lifting base to ascend and descend in the axial direction of the lead screw, and an optical shaft and a sliding block form a guide structure to improve stability; the folding table plate is hinged to the lifting base through the rotating handle and can be folded and stored in the shell, and the transverse deviation of the table plate is limited through the guide wheels in the shell. The mainboard is integrated with the resistance detection module, the resistance value is judged by collecting current and voltage signals of the motor in real time, the machine is automatically stopped when encountering an obstacle, operation continues after key confirmation, and safety is guaranteed. Through intelligent control and structure optimization, the problems that a traditional manual table board is complex in operation and poor in safety are solved, the lifting table board has the advantages of being convenient to operate, stable in lifting, safe, reliable and the like, and the space utilization rate and user experience are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle-mounted equipment technical field especially, it relates to a kind of automatic lifting, folding storage function's table board device, it is applicable to vehicle-mounted space, smart home and mobile office scene. BACKGROUND

[0002] With the development of automobile industry and the improvement of user's comfort and functionality demand for vehicle-mounted space, vehicle-mounted folding table board, as an important component to improve the utilization rate and use convenience of in-vehicle space, gradually gets wide application in business car, motor home, family car and other scenes.This kind of table board is mainly used for passengers to carry out office, catering, entertainment and other activities during driving, and the convenience, safety and intelligent degree of its operation become the key factors affecting user experience.

[0003] At present, the mainstream vehicle-mounted folding table board on the market adopts manual operation mode, which needs users to manually take out the table board from the storage position, unfold and adjust the height, and then manually fold and store after use.This traditional design has obvious defects: the manual operation process is complicated, especially in the small in-vehicle space, users need to spend more time and effort, and it is difficult for the elderly, children or people with limited mobility to use, which is difficult to meet the individual needs of different use scenarios. SUMMARY

[0004] Therefore, the utility model provides a kind of folding table board of automatic lifting, by integrating PCBA control system, motor drive module, resistance detection device and limit switch, realize the one-key automatic lifting of table board, resistance response, accurate limit locking and parameter adjustable function, effectively solve the problems of complicated operation and poor safety in the prior art, significantly improve the use convenience and reliability of vehicle-mounted table board.

[0005] The utility model provides a kind of folding table board of automatic lifting, including folding table board, lifting module, the lifting module includes shell body, and lifting seat, screw rod, screw nut, motor, mainboard and travel switch being installed in the shell body;The motor is driven connection with screw rod, for driving screw rod rotation, screw nut is sleeved on screw rod and is fixedly connected with lifting seat, to drive lifting seat to lift along the axial direction of screw rod when screw rod rotates;The base of folding table board is fixedly installed on lifting seat;The travel switch is electrically connected with mainboard, for sensing the position of lifting seat and generating position signal;The mainboard is also electrically connected with motor, switch and power supply, to receive the control signal of switch and control the operation of motor according to position signal.This technical scheme realizes the one-key automatic lifting of table board, without manual adjustment, solves the problem of complicated traditional manual operation, especially suitable for the convenient use demand of vehicle-mounted, small space.

[0006] Further to the foregoing, the number of lead screws is one, and a light shaft is installed in parallel with the lead screw, the light shaft is slidably installed with a sliding block, and the lifting seat is installed between the sliding block and the lead screw nut. The light shaft and the sliding block form a linear guide structure, share the radial load of the lead screw, reduce the shaking of the lead screw caused by uneven force, and improve the stability of the lifting process. The single lead screw design simplifies the mechanical structure, reduces the cost, and has higher reliability than the double lead screw.

[0007] Further to the foregoing, the folding table board includes a first table board and a second table board hingedly connected to each other, a rotatable handle is installed below the first table board, and the other end of the handle is rotatably installed on the base. The table board can be folded by 180° and stored in the shell through the handle, saving space and being suitable for scenarios with high space utilization rate such as vehicles and caravans.

[0008] Further to the foregoing, the shell is a rectangular parallelepiped, and an accommodation cavity for accommodating the folding table board is arranged inside the shell. A plurality of guide wheels are arranged in the shell and abut against the folding table board. A detachable cover plate is arranged on one side of the shell. The guide wheels fit the edges of the table board, effectively limiting the lateral deviation of the table board even when the vehicle is jolted during driving, and cooperate with the light shaft guide to further improve the stability of the lifting process. The detachable cover plate facilitates disassembly of the shell for maintenance or replacement of internal components such as the motor, main board, lead screw, etc., reducing the cost of after-sales maintenance.

[0009] Further to the foregoing, the travel switch includes an upper limit switch and a lower limit switch installed on the upper and lower parts of the inner side of the shell, respectively. When reaching the limit position, the limit switch immediately feeds back to the main board, and the main board cuts off the power of the motor and locks to prevent the motor from idling or the table board from sliding, avoiding mechanical damage or safety hazards.

[0010] Further to the foregoing, the upper and lower ends of the lead screw are installed on bearings, and a belt pulley is installed at the lower end of the lead screw. The motor drives the belt pulley and the lead screw to rotate through a synchronous belt. Synchronous belt transmission is quieter than gear transmission, has a buffering effect, reduces the impact load when the motor starts and stops, and prolongs the service life of mechanical components.

[0011] Further to the foregoing, the main board is integrated with a resistance detection module, which includes a current detection circuit and a voltage detection circuit electrically connected to the motor, for real-time acquisition of the working current and voltage signals of the motor, and judgment of the resistance value based on the current and voltage signals to control the motor to stop or run. When an obstacle is encountered during lifting, the resistance causes the motor current and voltage to suddenly change, and the module immediately stops. The process continues after the button is confirmed, avoiding the risk of injury and meeting the vehicle safety standards.

[0012] Compared with the prior art, the automatic lifting folding table plate has the following remarkable beneficial effects:

[0013] The single-button control of the table plate lifting switching is realized, the table plate is lifted by pressing the switch once, and is lowered by pressing the switch again, so that the operation process is greatly simplified. This design is especially suitable for the scene of vehicle and the like with relatively small space and inconvenient operation, solves the problem of complicated operation of the traditional manual table plate, and even the elderly, children or the disabled can easily use it;

[0014] The resistance detection module integrated on the main plate collects the working current and voltage signals of the motor in real time through the current detection circuit and the voltage detection circuit. When the resistance is detected to be greater than or equal to 2KG during the lifting process, the motor is immediately stopped, and when the resistance is detected to be greater than or equal to 1KG during the descending process, the motor is also stopped, and the user needs to press the key again to continue running, thereby effectively preventing the occurrence of pinching accidents and protecting the safety of the user;

[0015] The composite structure of the screw rod and the optical axis is installed in parallel, the optical axis cooperates with the sliding block to play a guiding role, the radial load of the screw rod is reduced, and the lifting process is more stable; the guide wheel arranged in the shell abuts against the folding table plate, and the stability of the table plate during lifting is further enhanced, so that the table plate does not deviate or shake too much during use. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 、 2 The overall schematic diagram provided by the embodiment of the present application is provided.

[0018] Figure 3 、 4 The explosion schematic diagram provided by the embodiment of the present application is provided.

[0019] Figure 5 The lifting module structure schematic diagram provided by the embodiment of the present application is provided.

[0020] Figure 6 The lifting module top structure schematic diagram provided by the embodiment of the present application is provided.

[0021] Figure 7 The lifting module bottom structure schematic diagram provided by the embodiment of the present application is provided.

[0022] Figure 8The storage schematic diagram provided by the embodiment of the utility model;

[0023] Figure 9 The use state reference diagram provided by the embodiment of the utility model;

[0024] Figure 10 The overall cross section schematic diagram provided by the embodiment of the utility model;

[0025] Figure 11 The upper cross section schematic diagram provided by the embodiment of the utility model;

[0026] Figure 12 The lower cross section schematic diagram provided by the embodiment of the utility model.

[0027] In the drawings, various reference signs are:

[0028] 1, folding table board;2, lifting module;20, lifting seat;21, shell;211, cover plate;212, guide wheel;213, bottom shell;22, lead screw;23, lead screw nut;24, optical axis;241, sliding block;251, upper limit switch;252, lower limit switch;26, bottom plate;27, motor;271, synchronous belt;28, mainboard;281, connecting line;29, bearing;3, panel;31, switch.

[0029] Through the above-mentioned drawings, the specific embodiments of the utility model have been shown, and more detailed descriptions will be given in the following. These drawings and textual descriptions are not intended to limit the scope of the utility model concept by any means, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] To make the technical solutions and advantages of the utility model clearer, the embodiments of the utility model will be described in further detail in combination with the drawings.

[0032] Please refer to Figures 1-12As shown, the utility model provides a kind of folding table board of automatic lifting, including folding table board 1, lifting module 2, lifting module 2 includes shell 21, and lifting seat 20, screw rod 22, screw nut 23, motor 27, mainboard 28 and travel switch of being installed in shell 21;Motor 27 is transmission connection with screw rod 22, for driving screw rod 22 rotation, screw nut 23 is sleeved on screw rod 22 and is fixedly connected with lifting seat 20, to drive lifting seat 20 along the axial direction of screw rod 22 when screw rod 22 rotates;The base of folding table board 1 is fixedly installed on lifting seat 20;Travel switch is electrically connected with mainboard 28, for inductive position of lifting seat 20 and generation position signal;Mainboard 28 is also electrically connected with motor 27, switch 31 and power supply, to receive the control signal of switch 31 and control the operation of motor 27 according to position signal.

[0033] Wherein, lifting module 2 is as the power and support unit of folding table board 1 lifting, its shell 21 is made of high-strength ABS engineering plastics, and it is cuboid shape, and the accommodating cavity that forms inside is contained folding table board 1.Shell 21 periphery inner wall is equipped with multiple guide wheels 212, these guide wheels 212 are contacted with the edge of table board, and it plays the role of horizontal limiting during the lifting of table board, ensure that table board moves along vertical direction stably, avoid deviation occurs.Shell 21 side is provided with detachable cover plate 211, it is convenient to overhaul and replace internal components, improve maintenance convenience.

[0034] As Figure 5 Shown, in shell 21 inside, screw rod 22 is installed in parallel with optical axis 24, and constitutes main transmission and guide structure.Screw rod 22 both ends are fixed on the upper and lower end plates of shell 21 by bearing 29, and the lower end of screw rod 22 is connected with pulley, and motor 27 drives pulley rotation through synchronous belt 271, to drive screw rod 22 rotation.Optical axis 24 is slidably installed with 1 linear slide block 241, and slide block 241 is connected with lifting seat 20, and lifting seat 20 is fixed with screw nut 23 simultaneously.When screw rod 22 rotates, screw nut 23 drives lifting seat 20 to move along the axial direction of screw rod 22, and optical axis 24 and slide block 241 provide radial support for lifting seat 20, reduce the radial load of screw rod 22, so that lifting process is more stable and smooth.Bottom plate 26 and bottom shell 213 are provided at the bottom of shell 21, bottom plate 26 is used to install bearing 29 and the bottom of fixed optical axis 24, and bottom shell 213 protects pulley and synchronous belt 271.

[0035] As Figure 1 、 9As shown, the folding table board 1 is composed of two parts hinged to each other, which can be folded by 180°. A rotating handle is installed at the bottom of the table board, one end of which is rotatably connected to the table board, and the other end is fixed on the lifting seat 20, allowing the table board to rotate in the horizontal direction, facilitating accurate placement of the table board into the housing 21 when stored. The table board can be used as a working or dining plane when unfolded, and the thickness is greatly reduced when folded, saving space and suitable for use in scenarios with high space utilization requirements such as vehicle-mounted and motor homes.

[0036] In this embodiment, the main board 28 is connected to the car machine power supply through the connecting line 281, and the main board 28 integrates functional modules such as microcontrollers, motor 27 driving circuits, resistance detection modules, and limit switch interfaces. The microcontroller can use the STM32 series, responsible for receiving key signals, processing limit switch and resistance detection data, and outputting control signals to adjust the operation of the motor 27. The motor 27 driving circuit supports forward and reverse rotation and speed adjustment of the motor 27, with a built-in protection circuit to ensure safe and stable operation of the motor 27.

[0037] The resistance detection module calculates the power of the motor 27 by real-time acquisition of the working current and voltage signals of the motor 27 and converts it into a resistance value. When the resistance encountered during the upward movement of the table board exceeds the set value (about 2KG) or the resistance during the downward movement exceeds the set value (about 1KG), the system immediately stops the motor 27 from running, preventing the risk of injury or mechanical overload. The limit switches are installed at the upper and lower parts of the inner side of the housing 21, and when the lifting seat 20 reaches the limit position, the limit switch sends a signal to the main board 28, which controls the motor 27 to stop and lock, avoiding damage caused by excessive lifting of the table board.

[0038] The key switch 31 on the operation panel 3 realizes one-key lifting control, and the table board rises by pressing the switch 31 once and descends by pressing it again. The status indicator light displays the running state of the table board and the system working condition in real time, such as green when rising, blue when descending, and red flashing when encountering resistance, facilitating users to intuitively understand the equipment state.

[0039] In some embodiments, a long press mode can also be used, that is, the motor 27 rotates by long pressing, and stops by not pressing, allowing the folding table board 1 to stay at a certain position. In some embodiments, the system supports speed and time parameter adjustment, which enters the setting mode by long pressing the switch 31, switches the parameter gear by short pressing the switch 31, and confirms and saves by long pressing. The adjustable speed range meets the needs of different scenarios, such as setting a lower speed in vehicle-mounted scenarios to ensure smoothness, and setting a higher speed in household scenarios to improve efficiency; the time limit function prevents the motor 27 from idling when the limit switch fails, enhancing system safety.

[0040] In actual use, when the user presses the switch 31 to trigger the up command, the motor 27 drives the screw rod 22 to rotate, and the lifting seat 20 drives the table plate to move upwards. In this process, the resistance detection module continuously monitors the load of the motor 27, and if it is detected that the resistance exceeds the set threshold, the motor 27 is immediately stopped and locked, and the user needs to press the key again to continue to rise. When the table plate rises to the top, the lifting seat 20 reaches the upper limit switch 251, and the system automatically stops and locks the motor 27, ensuring that the table plate is stable at the highest position.

[0041] The descending process is similar. Press the switch 31 again to switch to the descending command, and the motor 27 reverses to rotate, and the table plate moves downward. Resistance is also detected in real time during the descending process, and the machine is stopped when an obstacle is encountered. The motor 27 is locked when the bottom limit switch is reached, and the storage is completed.

[0042] The table plate is suitable for various scenes such as vehicle-mounted, motor home, smart home, etc. In a vehicle-mounted environment, it can be used as an office or dining platform, and one-key lifting saves operation time and is convenient to use in a small space. In smart home, the height can be adjusted according to the needs, and it can be used as a tea table, a dining table or a study table, and it does not occupy much space after storage.

[0043] Its core advantages are simple operation, single-key control to meet different user needs, high safety performance, resistance detection and limit protection to prevent accidents, reasonable structure design, screw rod 22 light shaft 24 composite guide and guide wheel 212 limit to ensure smooth lifting, and material selection and process design to improve overall reliability and service life.

[0044] Through the above specific embodiments, the utility model realizes efficient design and reliable operation of the automatic lifting and folding table plate, solves many shortcomings of traditional manual table plates, and provides an intelligent and convenient solution for vehicle-mounted and home scenarios.

[0045] Other embodiments of the utility model will be easily thought of by those skilled in the art after considering the specification and practicing the utility model. The present application aims to cover any variations, uses or adaptability of the utility model, which follow the general principles of the utility model and include common knowledge or conventional technical means in the technical field not disclosed by the utility model. The specification and examples are only regarded as exemplary, and the true scope and spirit of the utility model are indicated by the above claims.

[0046] It should be understood that the utility model is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the utility model is only limited by the appended claims.

Claims

1. An automatically elevating folding table top, characterized by: The utility model relates to a folding table, including folding table board (1), lifting module (2), the lifting module (2) includes casing (21) and the lifting seat (20) of installation in casing (21), lead screw (22), lead screw nut (23), motor (27), mainboard (28) and travel switch, motor (27) is transmission connection with lead screw (22), is used for driving lead screw (22) rotation, lead screw nut (23) is sleeved on lead screw (22) and is fixedly connected with lifting seat (20), to drive lifting seat (20) along the axial direction of lead screw (22) when the rotation of lead screw (22) lifts, the base of folding table board (1) is fixedly installed on lifting seat (20), travel switch is electrically connected with mainboard (28), is used for inducting the position of lifting seat (20) and generating position signal, mainboard (28) is electrically connected with motor (27), switch (31) and power supply still, to receive the control signal of switch (31) and control the operation of motor (27) according to position signal.

2. An automatically raising and lowering folding table board according to claim 1, characterized in that: The number of lead screw (22) is one, further including parallel installation light axis (24) with lead screw (22), the sliding block (241) of sliding installation is installed on light axis (24), the lifting seat (20) is installed between sliding block (241) and lead screw nut (23).

3. An automatically raising and lowering folding table top as claimed in claim 1, wherein: The folding table board (1) includes the first table board and the second table board that are hingedly connected, a rotatable handle is installed below the first table board, the other end of the handle is rotatably installed on the base.

4. An automatically raising and lowering folding table top as claimed in claim 1, wherein: The casing (21) is a cuboid, and an accommodation cavity for accommodating the folding table board (1) is arranged in the casing (21). A plurality of guide wheels (212) are arranged in the casing (21) and abut against the folding table board (1). A detachable cover plate (211) is arranged on one side of the casing (21).

5. An automatically raising and lowering folding table top as defined in claim 1, wherein: The travel switch includes an upper limit switch (251) and a lower limit switch (252), which are respectively arranged on the upper portion and the lower portion of the inner side of the casing (21).

6. An automatically raising and lowering folding table top as defined in claim 1, wherein: The upper and lower ends of the lead screw (22) are installed on bearings (29), and a belt pulley is further installed on the lower end of the lead screw (22). The motor (27) drives the belt pulley and the lead screw (22) to rotate through a synchronous belt (271).

7. An automatically raising and lowering folding table top as claimed in claim 1, wherein: The mainboard (28) is integrated with a resistance detection module, which includes a current detection circuit and a voltage detection circuit electrically connected with the motor (27). The resistance detection module is used for collecting the working current and voltage signals of the motor (27) in real time, and judging the resistance value based on the current and voltage signals to control the motor (27) to stop or operate.

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