CN111994285B - Aerospace seat - Google Patents

Abstract

The invention relates to the technical field of aviation and aircraft accessories and discloses a seat for aerospace, which comprises a seat body, wherein a carrying handle is movably connected to one side of the top end of a seat plate of the seat body, a supporting seat is fixedly connected to the bottom end of the seat plate of the seat body, a sliding rail is fixedly connected to the bottom end of the supporting seat, a reset tension spring is fixedly connected to one end of an inner cavity of a bottom plate of the supporting seat, the other end of the reset tension spring is fixedly connected with one end of a carrying plate, an anti-falling plate is fixedly sleeved on the outer wall of the carrying plate, which is located in the supporting seat, and a stop block is fixedly mounted on the inner wall of the supporting seat and on one side of the anti-falling plate. This seat for aerospace through setting up movable contact and static contact, can judge whether to accomplish the lock with meal board and button device by whether movable contact and static contact to whether light up to help the crew to confirm fast that the crew does not accomplish with meal board and pack up the action in the cabin by the warning light, thereby be convenient for the crew to carry out going on of the safety inspection work before the aircraft takes off.

Description

An aerospace seat

technical field

The invention relates to the technical field of aerospace aircraft accessories, in particular to an aerospace seat.

Background technique

A civil aircraft seat is mainly composed of a seat, a seat back, an armrest frame and a dining board on the back of the chair. It has the functions of adjustable backrest angle, retractable armrest, and retractable dining board. During the experience, the dining board needs to be stowed away during the ascent and descent of the aircraft to avoid the accident that the dining board may hurt passengers due to inertia during the ascent or descent of the aircraft. Below the front passenger seat to prevent luggage from being scattered during the flight.

At present, the seat dining boards of civil aircraft do not have the function of prompting storage and storage. When the flight attendants ask passengers to store the table boards, there are often cases where some passengers do not comply with the use regulations. In addition, it is prone to missed inspections. On the other hand, due to the limited space between the front and rear rows of aircraft seats, it is inconvenient to take items when they are placed under the front seats, and during the take-off and descent of the aircraft, it is still easy to Since items are scattered, an aerospace seat has been proposed.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides an aerospace seat, which has the advantages of being convenient for flight attendants to check the storage condition of each seat table board, convenient for taking items under the seat, etc., and solves the problem of seat dining boards in civil aircraft None of them have the function of prompting and storing. When the flight attendant asks passengers to store the desk board, there are often cases where some passengers do not comply with the use regulations, and the flight attendants need to check in sequence, which not only takes up the preparation time before the plane takes off, but also is prone to missed inspections. On the one hand, due to the limited space between the front and rear rows of aircraft seats, it is inconvenient to take items when placing them under the front seats, and during the take-off and descent of the aircraft, the problem of scattered items is still prone to occur.

(2) Technical solutions

In order to achieve the above-mentioned purpose of facilitating the flight attendants to check the storage conditions of each seat table and the convenience of taking items under the seat, the present invention provides the following technical solution: an aerospace seat, comprising a seat body, the seat body seat A handlebar is movably connected to one side of the top of the board, a support seat is fixedly connected to the bottom end of the seat plate of the seat body, a slide rail is fixedly connected to the bottom end of the support seat, and one end of the inner cavity of the bottom plate of the support seat is fixedly connected. A reset tension spring is fixedly connected, and the other end of the reset tension spring is fixedly connected with one end of the carrier plate. A stopper is fixedly installed on one side of the anti-separation plate, a slide bar is fixedly installed on the front of the object carrier, and the outside of the slider is slidably connected to the inner wall of the support seat, and one side of the top of the object carrier is located at The back of the support base is fixedly connected with a front baffle, the top of the front of the front baffle is hinged with a side strut, the other end of the side strut is hinged with the other side of the top of the load board, and the front of the side strut is hinged. A diagonal strut is hinged in the middle of the slanted strut, the other end of the diagonal strut is fixedly connected with the middle of the top end of the load board, a tailgate is hinged at one end of the load board, and the top of the front of the tailgate is hinged with a starter. A hook is fixedly installed at the bottom of one side of the seat body, a dining plate rack is movably connected to the front of the connecting shaft of the seat plate of the seat body and the seat back, and the other end of the dining plate rack is hinged with a dining plate frame One end of the dining plate is fixedly installed with a positioning plate, the middle of the top of the front of the dining plate is provided with a fixing groove, the inner bottom of the fixing groove is embedded with a moving contact piece, and the top of the seat body is on one side. A button device is fixedly installed, the inner side of the button device is embedded with a static contact piece, and a warning light is fixedly installed on the top of the seat body.

Preferably, the opening and closing device includes a fixed support rod, the bottom end of the fixed support rod is hinged with the middle part of the back of the support seat, the top end of the fixed support rod is movably sleeved with the outside of the connecting shaft, and the A movable support rod is movably sleeved outside and located on the back of the fixed support rod, the bottom end of the movable support rod is hinged with the top of the front of the tailgate, and the outer part of the connecting shaft is movably sleeved on the back of the movable support rod. an installation sleeve, the outer wall of the installation sleeve is fixedly connected with a fixed sleeve, the inner of the fixed sleeve is movably sleeved with a fixed sleeve rod, and the bottom end of the fixed sleeve rod is fixedly connected with a fastening tension spring, so The bottom end of the tightening tension spring is fixedly connected with the inner bottom of the fixing sleeve, the top of one side of the fixing sleeve rod is provided with a positioning hanging hole, and the positioning hanging hole is fastened with the hook.

Preferably, the button device includes a locking bar, a bottom of one side of the locking bar is embedded with a static contact piece, a middle part of one side of the locking bar is fixedly connected with a positioning shaft, and the outside of the positioning shaft is movable A positioning sleeve is sleeved, the other end of the positioning sleeve is fixedly connected with one side of the seat body, the outer wall of the positioning shaft is fixedly installed with a limit block, and the inner wall of the positioning sleeve is fixedly installed with a positioning block.

Preferably, the total length of the fixed support rod and the movable support rod is the same as the total length of the tailgate and the object board, and the back of the object board protrudes from the back of the support base.

Preferably, the number of the limit blocks and the positioning blocks is two, and the two limit blocks and the two positioning blocks are respectively arranged symmetrically with respect to the central axis of the positioning shaft.

Preferably, the arrangement position of the fixing slot and the button device is adapted to be arranged with reference to the folded and retracted position of the plate rack, and the position where the movable contact piece is embedded in the fixing slot is the same as the position where the stationary contact piece is embedded on one side of the button device. position to match.

Preferably, one side of the moving contact piece is electrically connected to the output end of the voltage dividing resistor, and the input end and the output end of the voltage dividing resistor are electrically connected to the output end of the main switch and the input end of the warning light respectively, and the The input end of the switch is electrically connected with the output end of the power source, and the input end of the power source is electrically connected with one side of the static contact piece and the output end of the warning light respectively.

Preferably, the installation position of the master switch is located at the position of the special seat for the cabin crew.

Preferably, the conductive wire of the movable contact piece is transferred from the inside of the dining plate to the inside of the dining plate frame through the inside of the connecting shaft of the dining plate and the positioning plate, and then connected to the seat body from the inside of the dining plate frame through the dining plate frame The inside of the shaft enters the inside of the seat body.

Preferably, the conductive wire of the static contact piece has the inner portion of the locking strip and enters the interior of the seat body through the positioning shaft and the positioning sleeve.

(3) Beneficial effects

Compared with the prior art, the present invention provides an aerospace seat, which has the following beneficial effects:

1. In this aerospace seat, by setting the moving contact piece and the static contact piece, it can be determined whether the dining plate and the button device are fully buckled by whether the moving contact piece and the static contact piece are in contact, so that the warning light is lit or not. The auxiliary flight attendant can quickly confirm where the dining board has not been stowed away in the cabin, so that it is convenient for the flight attendant to carry out the safety inspection before the plane takes off.

2. This aerospace seat, through the cargo plate, the front baffle and the rear baffle, the luggage rack under the seat composed of the cargo plate, the front baffle and the rear baffle can be used for the luggage rack that cannot be placed above the cabin. Items are stored in a stable manner, and at the same time, it cooperates with the side stop mechanism of the side struts and diagonal struts and the tension rebound mechanism of the reset tension spring to achieve the purpose of stably storing items and effectively avoid the occurrence of scattered items when the aircraft takes off or descends.

3. For the aerospace seat, by setting the opening and closing device, the passenger presses the fixed sleeve, so that the movable support rod supports the rear baffle, and then the rear baffle pulls the loading plate to extend from the bottom of the support seat, and the completion is completed. After taking the object, the positioning hanging hole is fastened to the hook, and the loading plate is retracted to the bottom of the support seat under the rebounding force of the reset tension spring, so that the passenger can directly take the object, which is convenient and quick to use.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the partial enlarged schematic diagram of the opening and closing device of Fig. 1 of the present invention;

Fig. 3 is the side view of the dining board of the present invention;

Figure 4 is a side view of the opening and closing device of the present invention;

Fig. 5 is the enlarged schematic diagram of the place A of Fig. 1 of the present invention;

6 is a sectional view of the button device of the present invention;

7 is a schematic diagram of the circuit connection between the moving contact piece and the static contact piece of the present invention.

In the picture: 1. Seat body; 2. Handlebar; 3. Support seat; 4. Slide rail; 5. Return tension spring; 6. Load plate; 7. Anti-drop plate; Slider; 10. Front baffle; 11. Side strut; 12. Diagonal strut; 13. Back baffle; 14. Opening and closing device; 141, Fixed strut; 142, Connecting shaft; 143, Active strut; 144, installation sleeve; 145, fixed sleeve; 146, fixed sleeve rod; 147, tightening tension spring; 148, positioning hanging hole; 15, hook; 16, dining plate rack; 17, dining plate; 18, positioning plate ;19, fixed slot; 20, moving contact piece; 21, button device; 211, locking strip; 212, positioning shaft; 213, positioning sleeve; 214, limit block; 215, positioning block; 22, static contact piece ; 23, warning light; 24, divider resistor; 25, main switch; 26, power supply.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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, but not all of 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 shall fall within the protection scope of the present invention.

1-7, an aerospace seat includes a seat body 1, a handle 2 is movably connected to one side of the top of the seat plate of the seat body 1, and the bottom end of the seat plate of the seat body 1 is fixedly connected There is a support base 3, the bottom end of the support base 3 is fixedly connected with a slide rail 4, and the slide rail 4 is fixedly connected with the slideway of the engine room floor. A reset tension spring 5 is fixedly connected, and the other end of the reset tension spring 5 is fixedly connected with one end of the object carrier 6 . And a stopper 8 is fixedly installed on one side of the anti-separation plate 7, a sliding bar 9 is fixedly installed on the front of the object carrying plate 6, the outer part of the sliding bar 9 is slidably connected with the inner wall of the support base 3, and one side of the top of the object carrying plate 6 is slidably connected. And the front baffle 10 is fixedly connected to the back of the support base 3, the top of the front baffle 10 is hinged with a side strut 11, and the other end of the side strut 11 is hinged with the other side of the top of the load board 6, and the side brace A diagonal strut 12 is hinged to the middle of the front of the rod 11 , and the other end of the diagonal strut 12 is fixedly connected to the middle of the top of the object carrier 6 , and one end of the object carrier 6 is hinged with a rear baffle 13 , and the top of the front of the rear baffle 13 is hinged. The opening and closing device 14 is hingedly connected. The opening and closing device 14 includes a fixed support rod 141. The bottom end of the fixed support rod 141 is hinged with the middle part of the back of the support base 3. A movable strut 143 is movably sleeved on the outside of the shaft 142 and located on the back of the fixed strut 141. The total length of the fixed strut 141 and the movable strut 143 is the same as the total length of the rear baffle 13 and the load board 6. The back of the plate 6 protrudes from the back of the support seat 3, the back of the support seat 3 is provided with a chute that is adapted to the thickness of the carrier plate 6, and the height of the anti-detachment plate 7 is greater than the width of the chute opened on the back of the support seat 3 , so as to ensure the sliding connection between the loading plate 6 and the back of the support base 3, and the anti-detachment plate 7 will not be separated from the interior of the support base 3, and the bottom end of the movable support rod 143 is hinged with the top of the front of the rear baffle 13, and the connecting shaft An installation sleeve 144 is movably sleeved on the outside of the 142 and located on the back of the movable strut 143, the outer wall of the installation sleeve 144 is fixedly connected with a fixed sleeve 145, and the inner part of the fixed sleeve 145 is movably sleeved with a fixed sleeve rod 146. The bottom end of the sleeve rod 146 is fixedly connected with a tightening tension spring 147, and the bottom end of the tightening tension spring 147 is fixedly connected with the inner bottom of the fixed sleeve 145. The top of one side of the fixed sleeve rod 146 is provided with a positioning hanging hole 148 for positioning The hanging hole 148 is buckled with the hook 15, the bottom of one side of the seat body 1 is fixedly installed with the hook 15, and the front side of the connecting shaft of the seat plate and the seat back of the seat body 1 is movably connected with a dining plate frame 16, and the dining plate frame 16 is connected to the front side of the connecting shaft. The installation method of the seat body 1 adopts the disclosed seat installation method. The dining plate frame 16 is movably connected with the fixed shaft end of the seat body 1. The other end of the dining plate frame 16 is hinged with a dining plate 17. The dining plate One end of the 17 is fixedly installed with a positioning plate 18, and the positioning plate 18 and the protruding plate at one end of the meal plate rack 16 form a limiting mechanism to prevent the meal plate 17 from being in the position of the meal plate rack 16. One end is over-rotated to ensure the level of the maximum rotation of the dining plate 17. A fixing groove 19 is provided in the middle of the front top of the dining plate 17. The arrangement position of the fixing groove 19 and the button device 21 is based on the folded and retracted position of the dining plate frame 16 as a reference. The arrangement is adapted, and the position where the movable contact piece 20 is embedded in the fixing groove 19 is adapted to the position where the static contact piece 22 is embedded on one side of the button device 21 , the dining plate rack 16 is retracted, and the dining plate 17 is retracted , so that the locking bar 211 can just snap the fixing groove 19 at the dining board 17, and at the same time, the moving contact piece 20 contacts the static contact piece 22, and the inner bottom of the fixing groove 19 is embedded with the moving contact piece 20. One side of the chip 20 is electrically connected to the output end of the voltage dividing resistor 24, and the input end and the output end of the voltage dividing resistor 24 are respectively electrically connected to the output end of the main switch 25 and the input end of the warning light 23, and the installation position of the main switch 25 is located at The position of the special seat for the cabin crew is determined by the flight attendant and the safety inspection is started. The input end of the main switch 25 is electrically connected to the output end of the power supply 26, and the input end of the power supply 26 is respectively connected to one side of the static contact piece 22 and the side of the warning light 23. The output end is electrically connected, and the conductive wire of the movable contact piece 20 is transferred from the inside of the dining plate 17 through the inside of the connecting shaft of the dining plate 17 and the positioning plate 18 to the inside of the dining plate rack 16, and then from the inside of the dining plate rack 16 through the dining plate The inside of the connecting shaft of the frame 16 and the seat body 1 enters the interior of the seat body 1, the conductive wire of the static contact piece 22 and the interior of the locking strip 211 enter the interior of the seat body 1 through the positioning shaft 212 and the positioning sleeve 213, A button device 21 is fixedly installed on the top of one side of the seat body 1 . The button device 21 includes a locking bar 211 . The bottom of one side of the locking bar 211 is embedded with a static contact piece 22 . There is a positioning shaft 212, a positioning sleeve 213 is movably sleeved on the outside of the positioning shaft 212, the other end of the positioning sleeve 213 is fixedly connected to one side of the seat body 1, and the outer wall of the positioning shaft 212 is fixedly installed with a limit block 214, positioning A positioning block 215 is fixedly installed on the inner wall of the sleeve 213 , the number of the limit block 214 and the positioning block 215 is two, and the two limit blocks 214 and the two positioning blocks 215 are respectively formed by the central axis of the positioning shaft 212 . Symmetrical arrangement, by setting the limit block 214 and the positioning block 215, the limit block 214 and the positioning block 215 limit the rotation angle of the positioning shaft 212 relative to the positioning sleeve 213, thereby limiting the rotation angle of the locking bar 211 within 180° , to prevent the conductive wire of the static contact piece 22 from being excessively twisted and falling off in the locking bar 211 .

When working, the main switch 25 is closed by the flight attendant, and the position where the warning light 23 is lit is the position where the dining board 17 and the button device 21 are not buckled and stowed, and the position where the dining board 17 and the button device 21 are buckled and stowed. The contact piece 20 is in contact with the static contact piece 22, and the warning light 23 is short-circuited and extinguished. When accessing the luggage under the support base 3, pull out the buckled state between the positioning hole 148 and the hook 15, and press the fixing sleeve 145. Under the fixed-point support of the rod 141, the movable support rod 143 spreads and rotates the tailgate 13, and the tailgate 13 drives the loading board 6 to slide out from the support seat 3, and at the same time stretches the reset tension spring 5, so that the luggage can be moved. After placing or taking out the loading plate 6, loosen the fixing sleeve 145, and under the rebounding action of the tension spring 5, the loading plate 6 slides into the support base 3, and makes the movable support rod 143 rise, driving the rear The baffle 13 is transformed into a vertical state, and then the fixing sleeve rod 146 is stretched, so that the positioning hanging hole 148 is engaged with the hook 15 again.

To sum up, in this aerospace seat, by arranging the movable contact piece 20 and the static contact piece 22, it can be determined whether the dining plate 17 and the button device 21 are fully buckled by whether the movable contact piece 20 and the static contact piece 22 are in contact. Therefore, whether the warning light 23 is lit or not assists the flight attendant to quickly confirm where the dining board has not completed the retraction action in the cabin, so as to facilitate the flight attendant to carry out the safety inspection work before the aircraft takes off; And the tailgate 13, the luggage rack under the seat composed of the cargo plate 6, the front baffle 10 and the tailgate 13 can store the items that cannot be placed in the luggage rack above the cabin, and at the same time cooperate with the side struts 11 and the inclined The side stop mechanism of the strut 12 and the tension rebound mechanism of the reset tension spring 5 can achieve the purpose of stably storing items and effectively avoid the occurrence of scattered items when the aircraft takes off or descends; by setting the opening and closing device 14, it is pressed and fixed by passengers The sleeve 145 makes the movable strut 143 support the rear baffle 13, and then the rear baffle 13 pulls the object carrier 6 to extend from the bottom of the support base 3. After the action of picking up the object is completed, the positioning hanging hole 148 is connected to the hook. 15 is buckled, and under the action of the tension and rebound of the reset tension spring 5, the loading plate 6 is retracted to the bottom of the support base 3, so that it is convenient for passengers to directly take the items, which is convenient and quick to use; it solves the problem of seat dining in civil aircraft. The board 17 does not have the function of prompting storage and warning. When the flight attendant asks passengers to store the table board, there are often cases that some passengers do not comply with the use regulations. The flight attendants need to check in sequence, which not only takes up the preparation time before the plane takes off, but also easily misses the situation. On the other hand, due to the limited space between the front and rear rows of aircraft seats, it is inconvenient to take items when placing them under the front seats, and during the take-off and descent of the aircraft, the problem of scattered items is still prone to occur.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (1)

1. An aerospace seat, characterized by comprising a seat body (1), a handlebar (2) is movably connected to one side of the top of the seat plate of the seat body (1), and the seat is The bottom end of the base plate of the main body (1) is fixedly connected with a support seat (3), the bottom end of the support seat (3) is fixedly connected with a slide rail (4), and one end of the inner cavity of the bottom plate of the support seat (3) is fixed A reset tension spring (5) is connected, the other end of the reset tension spring (5) is fixedly connected with one end of the object carrier (6), and the outer wall of the object carrier (6) located in the support seat (3) is fixed An anti-separation plate (7) is sleeved, and a stopper (8) is fixedly installed on the inner wall of the support seat (3) and located on one side of the anti-separation plate (7), and the front of the object carrying plate (6) is fixed A slider (9) is installed, the outside of the slider (9) is slidably connected to the inner wall of the support seat (3), and one side of the top end of the object carrier (6) is fixedly connected to the back of the support seat (3) There is a front baffle (10), the top of the front of the front baffle (10) is hinged with a side strut (11), and the other end of the side strut (11) is connected to the other end of the top of the load board (6). Side hinge, the middle part of the front side of the side strut (11) is hinged with a diagonal strut (12), the other end of the diagonal strut (12) is fixedly connected with the middle part of the top end of the object carrier (6), the carrier One end of the object board (6) is hinged with a tailgate (13), the top of the front of the tailgate (13) is hinged with an opening and closing device (14), and the bottom of one side of the seat body (1) is fixedly installed There is a hook (15), a dining plate frame (16) is movably connected to the front of the connecting shaft of the seat plate and the seat back of the seat body (1), and a dining plate (16) is hinged at the other end of the dining plate frame (16). 17), a positioning plate (18) is fixedly installed at one end of the dining board (17), a fixing groove (19) is opened in the middle of the top of the front of the dining board (17), and the inner bottom of the fixing groove (19) is A moving contact piece (20) is embedded, a button device (21) is fixedly installed on the top end of one side of the seat body (1), and a static contact piece (22) is embedded in the inner side of the button device (21). A warning light (23) is fixedly installed on the top of the seat body (1); The opening and closing device (14) includes a fixed support rod (141), the bottom end of the fixed support rod (141) is hinged with the middle part of the back of the support seat (3), and the top end of the fixed support rod (141) is connected to the A movable support rod (143) is movably sleeved on the outside of the shaft (142) and located on the back of the fixed support rod (141), and the bottom of the movable support rod (143) is movably sleeved on the outside of the shaft (142). The end is hinged to the top of the front of the rear baffle (13), and a mounting sleeve (144) is movably sleeved on the outside of the connecting shaft (142) and located at the back of the movable strut (143), and the mounting sleeve (144) A fixing sleeve (145) is fixedly connected to the outer wall of the A tension spring (147), the bottom end of the tightening tension spring (147) is fixedly connected with the inner bottom of the fixing sleeve (145), and the top of one side of the fixing sleeve rod (146) is provided with a positioning hanging hole (148) ), the positioning hanging hole (148) is engaged with the hook (15); The button device (21) includes a locking bar (211), a static contact piece (22) is embedded in the bottom of one side of the locking bar (211), and a middle part of one side of the locking bar (211) is fixed A positioning shaft (212) is connected, and a positioning sleeve (213) is movably sleeved on the outside of the positioning shaft (212), and the other end of the positioning sleeve (213) is fixed to one side of the seat body (1). connection, the outer wall of the positioning shaft (212) is fixedly installed with a limiting block (214), and the inner wall of the positioning sleeve (213) is fixedly installed with a positioning block (215); The total length of the fixed support rod (141) and the movable support rod (143) is the same as the total length of the rear baffle (13) and the load board (6), and the back of the load board (6) protrudes to support the back of the seat (3); The number of the limit blocks (214) and the positioning blocks (215) is two, and the two limit blocks (214) and the two positioning blocks (215) are respectively formed by the central axis of the positioning shaft (212). symmetrical arrangement; The arrangement position of the fixing groove (19) and the button device (21) is adapted and arranged with reference to the folded and retracted position of the plate rack (16), and the fixing groove (19) is embedded with the movable contact piece (20). The position is adapted to the position where the static contact piece (22) is embedded on one side of the button device (21); One side of the movable contact piece (20) is electrically connected to the output end of the voltage dividing resistor (24), and the input end and the output end of the voltage dividing resistor (24) are respectively electrically connected to the output end and the output end of the main switch (25). The input end of the warning light (23), the input end of the main switch (25) is electrically connected with the output end of the power supply (26), and the input end of the power supply (26) is respectively connected to one side of the static contact piece (22) is electrically connected with the output end of the warning light (23); the installation position of the main switch (25) is located at the position of the special seat for the cabin crew; The conductive wire of the movable contact piece (20) is transferred from the inside of the dining plate (17) through the inside of the connecting shaft of the dining plate (17) and the positioning plate (18) to the inside of the dining plate frame (16), and then from the dining plate (17) to the inside of the dining plate frame (16). The interior of the frame (16) enters the interior of the seat body (1) through the interior of the connecting shaft between the meal plate frame (16) and the seat body (1); The conductive wire of the static contact piece (22) has a locking bar (211) inside the seat body (1) through a positioning shaft (212) and a positioning sleeve (213); When the flight attendant closes the main switch, the position where the warning light is lit is the position where the dining board and the button device are not buckled and stowed, and the position where the dining board and the button device are buckled and stowed, the moving contact piece is in contact with the static contact piece, and the warning light The short circuit is extinguished. When accessing the luggage under the support seat, pull out the buckled state between the positioning hanging hole and the hook, press the fixed sleeve, and under the fixed-point support of the fixed support rod, the movable support rod will support the tailgate and open it. Rotate, the tailgate will drive the loading board to slide out from the support seat, and at the same time stretch the reset tension spring, after placing the luggage or taking out the loading board, release the fixed sleeve, under the rebound effect of the reset tension spring , the loading board slides into the support seat, and the movable support rod is raised, which drives the tailgate to change to a vertical state, and then stretches the fixed sleeve rod, so that the positioning hanging hole and the hook are buckled again.

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