Method for preventing collision between a rail transit passenger car seat and a dining table board during rotation and an electric dining table board

Abstract

The present invention relates to the technical field of seat accessories for rail transit passenger cars, and in particular to a method and an electric table board for preventing the table board of a rail transit passenger car from colliding with the backrest when the seat rotates. Based on the original structure of the table board, a detection device for detecting whether the table board is retracted to the backrest, a driving device for driving the table board to retract towards the backrest, a knob motor and an alarm are provided. Without changing the structure of the existing carriage and seat, the present invention realizes the retraction and locking of the table board, solves the problem that it is time-consuming and laborious to manually retract the table board before, greatly shortens the commutation time during the operation of the rail transit train, reduces the labor and operation costs, avoids the possibility of the seat table board touching the carriage body, and realizes energy conservation and consumption reduction. At the same time, it has the functions of monitoring the state of the seat table board and fault alarm, which is convenient for maintenance and repair.

Description

Technical Field

[0001] The present invention relates to the technical field of seat accessories for rail transit passenger cars, and particularly to a method for preventing a dining table board from being collided when a seat of a rail transit passenger car rotates and an electric dining table board. Background Art

[0002] With the rapid development of high-speed trains, more and more people travel by rail transit passenger cars such as high-speed trains and multiple unit trains. Passengers' requirements for the comfort and convenience of the riding environment are also getting higher and higher, making high-speed trains not only a means of transportation for passengers to travel to a certain destination, but also providing passengers with more comfortable functions such as rest, entertainment, work and dining.

[0003] To meet the needs of passengers, current high-speed trains are all provided with dining table boards for passengers to use for dining, placing cups, laptops and other purposes. The existing dining table board includes a dining table support arm and a table board assembly. One end of the dining table support arm is rotatably connected to the table board assembly through a rotating shaft structure, and the other end is connected to the seat frame, so that the dining table is independent of the adjustable seat backrest. When the seat backrest of the front row reclines backward, the dining table will not recline with it and will not affect the use of the dining table by the passengers in the back row. When the dining table is opened, the table board can smoothly drop to the horizontal position. When the dining table board is not in use, push the dining table support arm or the table board assembly upward by hand to make it flat against the seat backrest of the front row, and rotate the rotary buckle to fix the dining table board.

[0004] However, for high-speed trains such as high-speed trains, before the train returns after reaching the terminal, the seat needs to be rotated 180° so that the passengers face the direction of the train's advance. Due to the narrow space inside the train, if the dining table board is not retracted or the dining table board is retracted but drops during the rotation of the seat, the dining table board will collide with the train window, other seats, etc., resulting in damage. However, it often happens that the dining table board is not retracted in actual use. When passengers get off the train, some passengers do not retract the dining table board, or the cleaning staff forgets to retract the dining table board when cleaning the train. If the dining table board is not firmly fixed after being retracted, it may also drop during the rotation process. Since the train stop time is short, the crew or cleaning staff has to carry out the cleaning inside the train and the rotation of the seats. The time is tight, the workload is large, and the work intensity is high, which is not conducive to the rapid operation of the train and cost saving. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for preventing a dining table board from being collided when a seat of a rail transit passenger car rotates and an electric dining table board for the deficiencies of the prior art, which can retract the dining table board conveniently and quickly and ensure that no collision occurs during the seat adjustment process.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A method for preventing a rail transit passenger car seat from colliding with a dining table when rotating. Before rotating the seat, a detection device is used to detect whether the dining table behind the seat is retracted. If it is not retracted, a driving device is used to drive the dining table to retract towards the backrest, and then a locking device is used to lock it at the back of the backrest. Then, the seat is rotated, and during the rotation process, it continues to monitor whether the dining table leaves the backrest. If the dining table leaves the backrest, the rotation of the seat is stopped and an alarm is issued.

[0007] Preferably, before rotating the seat, enter the automatic mode. In the automatic mode, the detection device, the driving device, and the locking device are connected to the power supply. After the seat rotation is completed, the power supply of the detection device, the driving device, and the locking device is disconnected, and the manual operation mode is entered.

[0008] Preferably, the detection device, the driving device, and the locking device are installed inside the backrest of the seat.

[0009] Preferably, the backrest is provided with a switch for controlling the detection device, the driving device, and the locking device. After pressing the switch, the automatic mode or the automatic and manual dual-control mode is entered.

[0010] The present invention also provides an automatically retractable electric dining table for the method of preventing a rail transit passenger car seat from colliding with a dining table when rotating. It includes a dining table, a first rotating shaft, a support arm, a second rotating shaft, and a locking knob for locking the dining table at the back of the backrest. The dining table is rotatably connected to one end of the support arm through the first rotating shaft, and the other end of the support arm is rotatably connected to the backrest through the second rotating shaft. It further includes a detection device for detecting whether the dining table is retracted to the backrest, a driving device for driving the dining table to retract towards the backrest, a knob motor, and an alarm. The detection device includes a position sensor for detecting the relative position of the dining table and the backrest. The output end of the knob motor is connected to the locking knob, and the position sensor is electrically connected to the driving device, the knob motor, and the alarm respectively.

[0011] Preferably, the driving device is a flipping motor. The flipping motor and the knob motor are both arranged inside the backrest, and the output end of the flipping motor is drivingly connected to the second rotating shaft.

[0012] Preferably, the driving device further includes a synchronous belt. One end of the synchronous belt is drivingly connected to the first rotating shaft through a first synchronous pulley, and the other end of the synchronous belt is connected to the output end of the second rotating shaft and the flipping motor through a second synchronous pulley. The synchronous belt is arranged inside the support arm.

[0013] Preferably, a circuit controller is further provided. The circuit controller includes a power supply connector and a control switch.

[0014] Preferably, a pressure sensor for measuring whether there are other objects above the tabletop is provided on the first rotating shaft, and the pressure sensor is electrically connected to the position sensor.

[0015] Preferably, an embedded groove is provided on the upper surface of the tabletop, and a rotatable multimedia display screen is provided in the embedded groove.

[0016] The beneficial effects of the present invention are as follows: A method and an electric tabletop for preventing a rail transit passenger car seat from colliding with the tabletop when rotating. Based on the original structure of the tabletop, a detection device for detecting whether the tabletop is retracted to the backrest, a driving device for driving the tabletop to retract to the backrest, a knob motor, and an alarm are provided. Without changing the structure of the existing carriage and seat, the present invention realizes the retraction and locking of the tabletop, solves the problem that it is time-consuming and laborious to manually retract the tabletop before, greatly shortens the commutation time during the operation of the rail transit train, reduces the labor and operation costs, avoids the possibility of the seat tabletop touching the carriage body, realizes energy conservation and consumption reduction, and at the same time has the functions of monitoring the state of the seat tabletop and fault alarm, which is convenient for maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the electric tabletop of the present invention.

[0018] Figure 2 It is a partial structural schematic diagram of the electric tabletop of the present invention when retracted.

[0019] Figure 3 It is a schematic structural diagram of another embodiment of the electric tabletop of the present invention.

[0020] DESCRIPTION OF THE REFERENCE NUMERALS

[0021] 1 - Tabletop 11 - Embedded groove

[0022] 2 - First rotating shaft 3 - Support arm

[0023] 4 - Second rotating shaft 5 - Locking knob

[0024] 6 - Knob motor 7 - Position sensor

[0025] 8 - Tipping motor 91 - Synchronous belt

[0026] 92 - First synchronous pulley 93 - Second synchronous pulley. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present invention will be further described in detail below with reference to the drawings and specific embodiments, and the scope of implementation of the present invention is not limited thereto.

[0028] Embodiment 1.

[0029] The method for preventing the dining table board from being collided when the rail transit passenger car seat rotates. Before rotating the seat, use the detection device to detect whether the dining table board at the rear side of the seat is retracted. If it is not retracted, use the driving device to drive the dining table board to retract towards the backrest direction, and then use the locking device to lock it at the rear side of the backrest. Then rotate the seat, and continue to monitor whether the dining table board leaves the backrest during the rotation. If the dining table board leaves the backrest, stop rotating the seat and issue an alarm. On the one hand, this method can detect whether the dining table board is retracted and then process it. On the other hand, it avoids the dining table board leaving the backrest during the seat rotation. In the prior art, the detection of the position of the dining table board, automatic retraction, and automatic locking are not existing technical means. Generally, it is manually checked and then manually retracted, which greatly consumes time. More importantly, although some dining table boards are retracted, they are not locked tightly. As the seat rotates, the dining table board will leave the backrest, and it is very easy to collide and cause damage.

[0030] To solve the different usage purposes of passengers and service personnel at two different time points during the journey and at the end stop, it can be divided into two modes: manual mode and automatic mode. Before rotating the seat after entering the end point, enter the automatic mode. In the automatic mode, the detection device, driving device, and locking device are connected to the power supply. This mode can be automatically performed according to the program or can also be connected to the control terminal to understand the state of the dining table board and issue instructions to perform operations automatically through the program. When the seat rotation is completed, disconnect the power supply of the detection device, driving device, and locking device, and enter the manual operation mode, so that passengers can open or retract the dining table board according to their needs.

[0031] The detection device, driving device, and locking device are installed inside the seat backrest, so that there is no need to make many adjustments to the carriage structure, seat structure, circuit system, communication system, etc.

[0032] Of course, as another implementation method, a switch for controlling the detection device, driving device, and locking device can be provided on the backrest. After pressing the switch, enter the automatic mode or the automatic-manual dual-control mode, so that passengers can also electrically open or retract the dining table board in front of them individually.

[0033] To implement the above method, the dining table board can be detected and driven in different ways. In the following embodiments, the present application improves one of the most commonly used dining table board structures on current trains.

[0034] Embodiment 2.

[0035] Such as Figure 1 、 Figure 2As shown in the figure, an electric table board is used for the method of preventing the table board from colliding when the seat of a rail transit passenger car rotates. It includes a table board 1, a first rotating shaft 2, a support arm 3, a second rotating shaft 4, and a locking knob 5 for locking the table board 1 at the rear side of the seat back. The table board 1 is rotatably connected to one end of the support arm 3 through the first rotating shaft 2. There are two first rotating shafts 2, support arms 3, and second rotating shafts 4 respectively. The other end of the support arm 3 is rotatably connected to the seat back through the second rotating shaft 4. It also includes a detection device for detecting whether the table board 1 is retracted to the seat back, a driving device for driving the table board 1 to retract towards the seat back, a knob motor 6, and an alarm. The detection device includes a position sensor 7 for detecting the relative position between the table board 1 and the seat back. The output end of the knob motor 6 is connected to the locking knob 5. The position sensor 7 is electrically connected to the driving device, the knob motor 6, and the alarm respectively.

[0036] There are various implementation methods for the position sensor 7 used in the detection device. For example, distance sensors can be respectively set on the seat back and the table board to detect the distance between the seat back and the table board 1. For example, an angle sensor for detecting the rotation angle of the second rotating shaft 4. Other sensors such as electromagnetic, photoelectric, capacitive, reed switch, and Hall sensors can all be used. Through this method, it can be determined whether the table board 1 is retracted.

[0037] The driving device used in this embodiment is as Figure 1 shown, which is a flipping motor 8. The flipping motor 8 and the knob motor 6 are both arranged inside the seat back. The output end of the flipping motor 8 is drivingly connected to the second rotating shaft 4. One flipping motor 8 can be set, or one can be set at each of the two support arms 3 respectively. In this technical solution, the flipping motor 8 is just located inside one support 3 and can be hidden in the seat (base), which is convenient for layout. Its driving power supply can be a battery or connected to the power cord at the bottom of the seat.

[0038] The locking device used in this embodiment is as Figure 2 shown, which is realized by driving the locking knob 5 through the knob motor 6. In this technical solution, it is necessary to ensure that the knob 5 is rotated to the vertical direction when locking, so as to better lock the table board 1.

[0039] Since the table board 1 and the support arm 3 are at two different angles, when retracting the table board 1 in this embodiment, the flipping motor 6 drives the support arm 3 to rotate towards the seat back. The table board 1 remains in the horizontal position. When the edge of the table board 1 touches the seat back, through the rotation of the support arm 3, the table board rotates towards the seat back with the contact point against the seat back as the rotation axis, so that the table board is flush with the seat back. Then the position sensor 7 is triggered, and then the knob motor 6 drives the locking knob 5 to lock the table board 1.

[0040] Further, a circuit controller is also provided. The circuit controller includes a power connector and a control switch to control the circuit and information.

[0041] Further, a pressure sensor for measuring whether there are other objects above the table board 1 is provided on the first rotating shaft 2. The pressure sensor is electrically connected to the position sensor 7, so as to prevent the table board 1 from being retracted when there are still items or garbage placed by passengers on the table board 1. When there are items or garbage above the table board 1, the pressure detected by the pressure sensor will change, and then an alarm will be issued to remind the staff to handle it.

[0042] Embodiment III.

[0043] As Figure 3 shown, this embodiment provides another driving device for driving the table board 1 to retract towards the backrest. Specifically, on the basis of Embodiment II, the driving device further includes a synchronous belt 91. One end of the synchronous belt 91 is drivingly connected to the first rotating shaft 2 through a first synchronous pulley 92, and the other end of the synchronous belt 91 is connected to the output end of the second rotating shaft 4 and the flipping motor 8 through a second synchronous pulley 93. The synchronous belt 91 is arranged in the support arm 3. In this embodiment, the table board 1 is driven to rotate relative to the support arm 3 through the synchronous belt 91. As another implementation manner, a motor can also be provided at the first rotating shaft 2 to drive the table board 1 to rotate.

[0044] Other technical features of this embodiment are the same as those of Embodiment II and will not be described herein again.

[0045] Embodiment IV.

[0046] As Figure 1 shown, in this embodiment, a multimedia device is added on the basis of Embodiment II. An embedded groove 11 is provided on the upper surface of the table board 1, and a rotatable multimedia display screen is arranged in the embedded groove 11.

[0047] Specifically, existing carriages are all equipped with a train closed-circuit television system to provide passengers with in-trip cultural and entertainment services, which not only greatly improves the passenger service quality of EMU trains but also creates a strong coverage and dissemination power. Currently, the high-speed rail multimedia is installed above the aisle of the carriage. Approximately 10 units are installed in each carriage, distributed on the side panels at both ends of the carriage and above the aisle. The programs are relatively single and do not have personal use functions. Although it can already meet the needs of some people, it does not have personalized use. Moreover, for a distance of about 26 meters in a single carriage, the current number of multimedia devices cannot enable more passengers to watch comfortably and listen clearly to voice information, and cannot meet the needs of all passengers. Therefore, in this embodiment, a retractable multimedia entertainment information system is added to the dining table board 1. This system integrates functions such as audio and video, games, arrival reminder, train on-time / late query, passenger calling the conductor for ticket supplement, and shopping, etc., to meet the needs of passengers, improve the passengers' riding experience, and further improve the service quality of the EMU. When the multimedia entertainment information system is not in use, it can be folded into the built-in groove 11 of the dining table board. This multimedia entertainment information system has good waterproof and dustproof functions and does not affect the function of the dining table board for passengers to use.

[0048] This system uses currently mature Windows or Android systems, supports multi-language menu settings, which is convenient for people of different nationalities to operate the menu. The screen uses a high-definition IPS display screen, supports multi-touch operation, is equipped with a USB interface and a headphone interface, and uses a high-quality headphone socket with a plug and unplug life of up to 500,000 times. Each multimedia entertainment information system does not have a voice external playback function. When in use, it must be used in conjunction with the headphones built into the front seat backrest, which will not affect the rest of the surrounding passengers and interfere with the surrounding passengers' use of the multimedia entertainment information system. This system uses wireless WIFI connection, does not require other signal lines, is simple to install and maintain, and supports USB fast charging function, supports mobile phone screen mirroring, supports the installation of passengers' own software, and is equipped with a power-off restoration wizard to improve the passengers' riding experience.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An electric table board for preventing collision when the seat of a rail transit passenger car rotates, characterized in that: It includes a tabletop (1), a first rotating shaft (2), a support arm (3), a second rotating shaft (4), and a locking knob (5) for locking the tabletop (1) at the rear side of the chair back. The tabletop (1) is rotatably connected to one end of the support arm (3) through the first rotating shaft (2), and the other end of the support arm (3) is rotatably connected to the chair back through the second rotating shaft (4). It is characterized in that: it further includes a detection device for detecting whether the tabletop (1) is retracted to the chair back, a driving device for driving the tabletop (1) to retract towards the chair back, a knob motor (6), and an alarm. The detection device includes a position sensor (7) for detecting the relative position between the tabletop (1) and the chair back. The output end of the knob motor (6) is connected to the locking knob (5). The position sensor (7) is electrically connected to the driving device, the knob motor (6), and the alarm respectively; the driving device is a flipping motor (8). The flipping motor (8) and the knob motor (6) are both arranged inside the chair back. The output end of the flipping motor (8) is drivingly connected to the second rotating shaft (4). The driving device further includes a synchronous belt (91). One end of the synchronous belt (91) is drivingly connected to the first rotating shaft (2) through a first synchronous pulley (92), and the other end of the synchronous belt (91) is connected to the output end of the second rotating shaft (4) and the flipping motor (8) through a second synchronous pulley (93). The synchronous belt (91) is arranged inside the support arm (3); before rotating the seat, enter the automatic mode. In the automatic mode, the detection device, the driving device, and the knob motor (6) are connected to the power supply. Use the detection device to detect whether the tabletop (1) at the rear side of the seat is retracted. If it is not retracted, use the driving device to drive the tabletop (1) to retract towards the chair back, and then use the locking knob (5) to lock it at the rear side of the chair back, and then rotate the seat, and continue to monitor whether the tabletop (1) leaves the chair back during the rotation. If the tabletop (1) leaves the chair back, stop rotating the seat and give an alarm; after the seat rotation is completed, disconnect the power supply of the detection device, the driving device, and the knob motor (6), and enter the manual operation mode.

2. The electric table board for preventing collision when the seat of the rail transit passenger car rotates according to claim 1, wherein: The detection device and the driving device are installed inside the chair back of the seat.

3. The electric table board for preventing collision when the seat of the rail transit passenger car rotates according to claim 1, wherein: The chair back is provided with a switch for controlling the detection device, the driving device, and the knob motor (6). After pressing the switch, enter the automatic mode or the automatic and manual dual-control mode.

4. The electric table board for preventing collision when the seat of the rail transit passenger car rotates according to claim 1, wherein: A circuit controller is also provided. The circuit controller includes a power connector and a control switch.

5. The electric table board for preventing collision when the seat of the rail transit passenger car rotates according to claim 1, wherein: The first rotating shaft (2) is provided with a pressure sensor for measuring whether there are other objects above the tabletop (1). The pressure sensor is electrically connected to the position sensor (7).

6. The electric table board for preventing collision when the seat of the rail transit passenger car rotates according to claim 1, wherein: The upper surface of the tabletop (1) is provided with an embedded groove (11), and a rotatable multimedia display screen is arranged inside the embedded groove (11).

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