An aviation seat angle adjustment device

Abstract

The present invention relates to the technical field of aviation seats, and discloses an aviation seat angle adjustment device, including a cushion bracket, a support shaft fixedly installed at the rear end of the cushion bracket, a backrest bracket rotatably connected to the support shaft, a buttocks blocker provided at the front half of the cushion bracket, a push assembly provided at the rear sides of both left and right ends of the buttocks blocker, and a waist support provided at the lower half of the backrest bracket. The output end of the cylinder is extended to drive the slide seat to move forward along the slide groove, pull the steel wire rope 1 and the steel wire rope 2, and adjust the inclination angle of the backrest bracket; the push rod on the right side is pushed forward by the slide seat, thereby driving the support rod 1 and the support rod 2 to deflect; the soft cover of the cushion bracket forms a slope with a high front and a low back, supporting the buttocks of the passenger, and in the process of the rotation of the rotating tube, the two threaded collars are driven to approach each other, pushing the waist support plate forward, and the inclined rib plate is supported on the waist of the passenger, making the passenger more comfortable to ride.

Description

Technical Field

[0001] The invention relates to the technical field of aviation seats, and in particular to an aviation seat angle adjustment device. Background Art

[0002] Aviation seats refer to the seats on airplanes. Aviation seats are usually equipped with independent armrests, leg rests, electric adjustment, heating, massage, ventilation and other functions. Some seats can also rotate 360 ​​degrees or lie flat 180 degrees.

[0003] After the airline seat adjusts its tilt angle, a gap is likely to appear between the passenger's waist and the connection between the backrest and the seat cushion, resulting in a lack of support for the passenger's waist. When the backrest is tilted at a large angle, the passenger leans on the backrest and tends to slide forward on the seat cushion. To prevent sliding downward, the position of the buttocks needs to be adjusted to increase the squeezing force between the buttocks and the seat cushion, thereby increasing the friction between the buttocks and the seat cushion and inhibiting forward sliding. The seat cushion exerts squeezing force on the buttocks for a long time, which can easily cause discomfort when riding. Moreover, the tilted backrest encroaches on the space in the back row, which can easily squeeze the knees of the back passengers and affect the riding experience of the back passengers. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an aviation seat angle adjustment device, which has the advantages of enhancing the support effect on the passenger's waist and the support effect on the passenger's buttocks during the deflection of the backrest, thereby solving the problem of poor support effect on the passenger's waist and greater pressure on the passenger's buttocks during the deflection of the backrest.

[0006] (II) Technical solution

[0007] In order to achieve the purpose of enhancing the support effect on the passenger's waist and the support effect on the passenger's buttocks during the above-mentioned backrest deflection process, the present invention provides the following technical solutions: an aviation seat angle adjustment device, comprising a seat cushion bracket, a support shaft is fixedly installed on the rear end of the seat cushion bracket, and a backrest bracket is rotatably connected to the support shaft, a deflection driving member is arranged between the bottom end of the backrest bracket and the support shaft, a buttocks blocking member is arranged on the front half of the seat cushion bracket, and pushing components are arranged on the rear sides of the left and right ends of the buttocks blocking member, the rear end of the pushing component located in the right side of the seat cushion bracket is fixedly installed on the deflection driving member, and the rear end of the pushing component located in the left side of the seat cushion bracket is connected to the deflection driving member through a transmission assembly, and a lumbar support member is arranged in the lower half of the backrest bracket.

[0008] Preferably, the seat cushion bracket includes a right support arm and a left support arm. On the opposite sides of the right support arm and the left support arm, there are fixedly installed covering shells. Between the rear halves of the two covering shells, there is fixedly installed a wire threading pipe, and between the two covering shells, there are fixedly installed a plurality of cross beams.

[0009] Preferably, the support shaft includes an inner core rod fixedly installed between the rear ends of the right support arm and the left support arm. In the middle of the inner core rod, there is fixedly installed a threaded rod. On the left half and the right half of the threaded rod, there are thread grooves with opposite directions. At both ends of the threaded rod, there are fixedly installed reinforcing rods.

[0010] Preferably, the deflection driving member includes a U-shaped plate fixedly installed on the rear half of the right support arm. Inside the U-shaped plate, there is fixedly installed a cylinder. At the front output end of the cylinder, there is fixedly installed a sliding seat. On the right side of the sliding seat, there is fixedly installed a pulley. There is a sliding groove opened on the right support arm, and the pulley is slidably connected in the sliding groove. At the rear side of the sliding seat, there are fixedly installed a first steel wire rope and a second steel wire rope. The second steel wire rope is located above the U-shaped plate, and the first steel wire rope is located below the U-shaped plate. There is a guiding pipe fixedly installed on the right support arm. On the opposite sides of the right support arm and the left support arm, there are fixedly installed a first steering elbow pipe; Both ends of the inner core rod are sleeved with annular winding wheels. Inside the U-shaped plate, there is a spiral spring. One end of the spiral spring is fixedly installed on the inner core rod, and the other end of the spiral spring is fixedly installed on the inner wall of the annular winding wheel; The first steel wire rope passes through the guiding pipe and is wound around the outer wall of the annular winding wheel located at the right end of the inner core rod; The second steel wire rope passes through the two first steering elbow pipes and is wound around the outer wall of the annular winding wheel located at the left end of the inner core rod; The second steel wire rope passes through the wire threading pipe.

[0011] Preferably, the hip blocking member includes a first support rod and a second support rod that are rotatably connected through the front halves of the two groups of covering shells. Both the first support rod and the second support rod are in a "Ji" shape. The first support rod is located behind the second support rod, and the width of the first support rod is smaller than the width of the second support rod; At both ends of the first support rod and the second support rod, there are fixedly installed rotating wheels. The cross-section of the rotating wheel is in an H shape. The rotating wheels located at the right ends of the first support rod and the second support rod are rotatably connected to the right support arm, and the rotating wheels located at the left ends of the first support rod and the second support rod are rotatably connected to the left support arm; In the middle of the rotating wheel, there is fixedly installed a first gear. Outside the rotating wheel, there is a sliding frame. At the bottom wall of the sliding frame, there are fixedly installed two groups of first rack plates. The two groups of first rack plates are respectively engaged with the two first gears. On the opposite sides of the right support arm and the left support arm, there are fixedly installed a rear baffle and a front baffle. The rear baffle is located behind the sliding frame, and the front baffle is located in front of the sliding frame.

[0012] Preferably, the pushing assembly includes a sleeve fixedly mounted on the rear end of the sliding frame, the sleeve is slidably connected to the rear baffle, a sliding disk is slidably connected inside the sleeve, a push rod is fixedly mounted on the rear side of the sliding disk, the push rod is slidably connected to the rear end of the sleeve, a spring 1 is fixedly mounted between the front side of the sliding disk and the inner wall of the sleeve, and a limiting member is arranged between the sliding disk and the inner wall of the sleeve; the rear end of the push rod on the right side is fixedly mounted on the sliding seat, and the rear end of the push rod on the left side is connected to the wire rope 2 through a transmission assembly.

[0013] Preferably, the limiting member includes embedded columns arranged in an array on the circumferential surface of the sliding disk, and the circumferential surface of the sliding disk is provided with mounting grooves in an array, the embedded columns correspond to the mounting grooves one by one, the embedded columns are slidably connected in the mounting grooves, and a spring 2 is fixedly installed between one end of the embedded column located inside the mounting groove and the inner wall of the mounting groove, the other end of the embedded column is hemispherical, and hemispherical grooves are provided in an array on the inner wall of the sleeve, and the embedded column fits on the hemispherical groove.

[0014] Preferably, the transmission assembly includes gear 2 rotatably connected to the left supporting arm, the bottom of gear 2 is meshed with rack plate 2, the top of gear 2 is meshed with rack plate 3, both rack plate 2 and rack plate 3 are slidably connected to the left supporting arm, the length of rack plate 2 is greater than the length of rack plate 3, a fixing plate is fixedly installed between the rear end of rack plate 3 and the rear end of push rod, a steel wire rope 3 is fixedly installed at the rear end of rack plate 2, a steering elbow 2 is fixedly installed on the rear half of the left supporting arm, the steering elbow 2 passes through the steering elbow 2 and is inserted into the threading tube, and the rear end of the steel wire rope 3 is fixedly installed on the steel wire rope 2.

[0015] Preferably, the backrest bracket includes a rotating tube fixedly installed between the two groups of annular winding wheels, the rotating tube passes through and is rotatably connected to the rear ends of the two covering shells, the rotating tube is sleeved on the outside of the threaded rod and the reinforcement rod, the inner diameter of the rotating tube is equal to the diameter of the reinforcement rod, and two connecting plates are fixedly installed on the outer wall of the rotating tube, and the two connecting plates are respectively attached to the two covering shells, and a frame is fixedly installed on the top of the two connecting plates, and an arc-shaped cross plate is fixed on the upper half of the frame in an array, and the arc-shaped cross plate is bent toward the rear side, and two annular plates are fixedly installed on the lower half of the frame, and the two annular plates are distributed up and down, and a straight groove is opened through the top of the rotating tube.

[0016] Preferably, the lumbar support member includes two threaded rings, the two threaded rings are respectively threadedly connected to the left half and the right half of the threaded rod, and slides are fixedly installed on the outer walls of the two threaded rings, and the slides are slidably connected to the linear groove and pass through the two annular plates, and each annular plate has a guide rail fixedly installed on the front inner wall of each annular plate, and each slide block is fixedly installed on the front side of each slide block, and the slide block is slidably connected to the guide rail; the front sides of the two slide blocks are hinged with two groups of support members, and each group of support members includes a rotating arm one and a rotating arm two, and the centers of the rotating arm one and the rotating arm two are hinged together by a pin shaft, and the rear ends of the rotating arm one and the rotating arm two are respectively hinged on the front sides of the two slide blocks, and the front ends of the rotating arm one and the rotating arm two are slidably connected with a lumbar support plate, and the front side array of the lumbar support plate is provided with an inclined rib plate, and the spacing between the inclined rib plate and the lumbar support plate gradually increases from top to bottom.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides an aviation seat angle adjustment device, which has the following beneficial effects:

[0019] 1. The angle adjustment device for the aviation seat drives the slide seat to move forward along the slide slot by extending the output end of the cylinder, pulling the first and second steel wire ropes, thereby driving the left and right annular winding wheels to rotate simultaneously, and the two annular winding wheels drive the rotating tube to rotate, thereby driving the frame and the connecting plate to deflect backward to adjust the inclination angle of the backrest bracket; thereby achieving the effect of synchronously driving the two ends of the rotating tube to rotate simultaneously, so that the backrest can be stably deflected;

[0020] 2. The aviation seat angle adjustment device pushes the right push rod forward through the sliding seat, and the steel wire rope 2 moves the steel wire rope 3 forward, driving the rack plate 2 to move backward, driving the gear 2 to rotate, thereby driving the rack plate 3 to move forward, and then pushing the left push rod forward through the fixing plate; the push rod moves forward under the action of the thrust, and through the limiting action of the limiting member and the elasticity of the spring 1, the sliding frame moves forward, and cooperates with the meshing action of the rack plate 1 and the gear 1 to drive the rotating wheel to rotate, thereby driving the support rod 1 and the support rod 2 to deflect; when the sliding frame is attached to the surface of the front baffle, the support rod 1 and the support rod 2 deflect to a vertical state, and the soft covering layer on the seat cushion bracket is lifted up by the support rod 1 and the support rod 2, so that the soft covering layer of the seat cushion bracket forms a slope with a high front and a low rear, which supports the passenger's buttocks and prevents the buttocks from sliding forward on the seat cushion; the passenger does not need to increase the friction between the buttocks and the seat cushion by increasing the squeezing force between the buttocks and the seat cushion; it is avoided that the squeezing force between the buttocks and the seat cushion is too large, and discomfort caused by long-term riding;

[0021] 3. In the aircraft seat angle adjustment device, during the rotation of the rotating tube, the threaded collar and the slide plate are deflected synchronously, and then the threaded connection between the threaded collar and the threaded rod drives the two threaded collars closer to each other, drives the first and second rotating arms to deflect relative to each other, pushes the lumbar support plate forward, and supports the waist of the passenger with the inclined ribs, making the passenger more comfortable to ride; and by moving the lumbar support plate away from the frame, a gap is created to ensure ventilation of the passenger's back and prevent long-term leaning and excessive back temperature; and by moving the lumbar support plate forward, it is avoided that when the soft cover layer on the back of the frame is attached to the knees of the rear passengers, the lumbar support plate will not exert a large squeezing force on the knees of the rear passengers, thereby ensuring the riding comfort of the rear passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of an aviation seat angle adjustment device proposed by the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a seat cushion bracket and a backrest bracket of an aviation seat angle adjustment device proposed by the present invention;

[0024] Figure 3 A three-dimensional structural schematic diagram of a support shaft, a backrest bracket and a waist support member of an aviation seat angle adjustment device proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of a seat cushion bracket of an aviation seat angle adjustment device proposed by the present invention;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a deflection drive component of an aviation seat angle adjustment device proposed by the present invention;

[0027] Figure 6 A schematic diagram of the three-dimensional structure of a hip blocking member and a pushing assembly of an aviation seat angle adjustment device proposed by the present invention;

[0028] Figure 7 A schematic diagram of the three-dimensional structure of a limiter in a driving assembly of an aircraft seat angle adjustment device proposed by the present invention;

[0029] Figure 8 A schematic diagram of the three-dimensional structure of a transmission assembly of an aviation seat angle adjustment device proposed by the present invention;

[0030] Fig. 9 An aviation seat angle adjustment device proposed by the present invention Figure 2 A is a schematic diagram of the enlarged structure of the details;

[0031] Fig.10 This is a schematic diagram of the three-dimensional structure of a lumbar support component of an aviation seat angle adjustment device proposed by the present invention.

[0032] In the figure: 100, cushion bracket; 200, support shaft; 300, backrest bracket; 400, deflection drive member; 500, hip blocking member; 600, pushing assembly; 700, transmission assembly; 800, lumbar support member; 101, right support arm; 102, left support arm; 103, covering shell; 104, threading tube; 105, crossbeam; 201, inner core rod; 202, threaded rod; 203, reinforcement rod; 301, rotating tube; 302, connecting plate; 303, frame; 304, arc-shaped horizontal plate; 305, annular plate; 306, linear groove;

[0033] 401, U-shaped plate; 402, cylinder; 403, slide seat; 404, pulley; 405, slide groove; 406, wire rope 1; 407, wire rope 2; 408, guide tube; 409, steering elbow 1; 410, annular winding wheel; 411, coil spring;

[0034] 501, support rod 1; 502, support rod 2; 503, rotating wheel; 504, gear 1; 505, sliding frame; 506, rack plate 1; 507, rear baffle; 508, front baffle; 601, sleeve; 602, sliding plate; 603, push rod; 604, spring 1; 605, embedded column; 606, mounting groove; 607, spring 2; 608, hemispherical groove;

[0035] 701, gear 2; 702, rack plate 2; 703, rack plate 3; 704, fixing plate; 705, wire rope 3; 706, steering elbow 2; 801, threaded collar; 802, slide plate; 803, guide rail; 804, slider; 805, pivot arm 1; 806, pivot arm 2; 807, waist support plate; 808, inclined rib plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 10, an aviation seat angle adjustment device includes a seat cushion bracket 100, a support shaft 200 is fixedly installed at the rear end of the seat cushion bracket 100, a backrest bracket 300 is rotatably connected to the support shaft 200, a deflection driving member 400 is arranged between the bottom end of the backrest bracket 300 and the support shaft 200, a buttocks blocking member 500 is arranged at the front half of the seat cushion bracket 100, and a pushing assembly 600 is arranged at the rear sides of the left and right ends of the buttocks blocking member 500, the rear end of the pushing assembly 600 located in the right side of the seat cushion bracket 100 is fixedly installed on the deflection driving member 400, and the rear end of the pushing assembly 600 located in the left side of the seat cushion bracket 100 is connected to the deflection driving member 400 through a transmission assembly 700, and a lumbar support member 800 is arranged at the lower half of the backrest bracket 300.

[0038] See also Figure 1-Figure 4 The seat cushion bracket 100 includes a right support arm 101 and a left support arm 102. A covering shell 103 is fixedly installed on the opposite side of the right support arm 101 and the left support arm 102. The covering shell 103 covers a part of the deflection driving member 400, the pushing assembly 600, the transmission assembly 700 and the hip blocking member 500 to prevent the soft covering layer of the seat from affecting the normal operation of the deflection driving member 400, the hip blocking member 500, the pushing assembly 600 and the transmission assembly 700. A threading tube 104 is fixedly installed between the rear halves of the two covering shells 103, and a plurality of crossbeams 105 are fixedly installed between the two covering shells 103. The crossbeams 105 support the buttocks of the passenger.

[0039] See also Figure 2-Figure 3 The support shaft 200 includes an inner core rod 201 fixedly installed between the rear ends of the right support arm 101 and the left support arm 102, a threaded rod 202 is fixedly installed in the middle of the inner core rod 201, and the left and right halves of the threaded rod 202 are provided with thread grooves in opposite directions. Reinforcement rods 203 are fixedly installed at both ends of the threaded rod 202, and the backrest bracket 300 is supported by the support shaft 200.

[0040] See also Figure 2 and Figure 4-Figure 5 The deflection driving member 400 includes a U-shaped plate 401 fixedly mounted on the rear half of the right supporting arm 101. The U-shaped plate 401 is U-shaped, and the rear end of the U-shaped plate 401 is semicircular. The left side of the U-shaped plate 401 is fixedly mounted on the inner wall of the covering shell 103. A cylinder 402 is fixedly mounted in the U-shaped plate 401, a slide 403 is fixedly mounted on the front output end of the cylinder 402, a pulley 404 is fixedly mounted on the right side of the slide 403, a slide groove 405 is provided on the right supporting arm 101, and the pulley 404 is slidably connected in the slide groove 405. The slide 403 is driven to move forward and backward along the slide groove 405 by the extension and retraction of the output end of the cylinder 402.

[0041] A steel wire rope 1 406 and a steel wire rope 2 407 are fixedly installed on the rear side of the slide 403. The steel wire rope 2 407 is located on the upper side of the U-shaped plate 401, and the steel wire rope 1 406 is located on the lower side of the U-shaped plate 401. The steel wire rope 1 406 and the steel wire rope 2 407 are separated by the U-shaped plate 401 to prevent the steel wire rope 1 406 and the steel wire rope 2 407 from being entangled. A guide tube 408 is fixedly installed on the right supporting arm 101, and a steering elbow tube 1 409 is fixedly installed on the opposite side of the right supporting arm 101 and the left supporting arm 102. Both ends of the guide tube 408 and the steering elbow tube 1 409 are horn-shaped.

[0042] Both ends of the inner core rod 201 are sleeved with an annular winding wheel 410, and the annular winding wheel 410 is supported by the inner core rod 201. A coil spring 411 is arranged on the inner side of the U-shaped plate 401, one end of the coil spring 411 is fixedly mounted on the inner core rod 201, and the other end of the coil spring 411 is fixedly mounted on the inner wall of the annular winding wheel 410; the elasticity of the coil spring 411 makes the annular winding wheel 410 have a tendency to rotate counterclockwise. The steel wire rope 1 406 passes through the guide tube 408 and is wound around the outer wall of the annular winding wheel 410 located on the right end of the inner core rod 201. The steel wire rope 2 407 passes through two steering bends 1 409 and is wound around the outer wall of the annular winding wheel 410 located on the left end of the inner core rod 201; the steel wire rope 2 407 passes through the threading tube 104. Therefore, when the output end of the cylinder 402 is extended and the slide 403 is driven to move forward, the steel wire rope 1 406 and the steel wire rope 2 407 are pulled, thereby driving the left and right annular winding wheels 410 to rotate synchronously clockwise, so that the backrest bracket 300 is deflected backward. When the output end of the cylinder 402 is contracted, the annular winding wheel 410 rotates counterclockwise under the elastic action of the coil spring 411, so that the backrest bracket 300 is deflected forward and reset. The deflection range of the backrest bracket 300 relative to the cushion bracket 100 is: 100°-130°.

[0043] See also Figure 3 The backrest bracket 300 includes a rotating tube 301 fixedly installed between two groups of annular winding wheels 410, so that when the annular winding wheels 410 rotate, the rotating tube 301 is driven to rotate synchronously. The rotating tube 301 penetrates and is rotatably connected to the rear ends of the two covering shells 103. The rotating tube 301 is sleeved on the outside of the threaded rod 202 and the reinforcement rod 203, and the inner diameter of the rotating tube 301 is equal to the diameter of the reinforcement rod 203. Two connecting plates 302 are fixedly installed on the outer wall of the rotating tube 301. The two connecting plates 302 are respectively attached to the two covering shells 103. A frame 303 is fixedly installed on the top of the two connecting plates 302, so that the frame 303 and the connecting plates 302 rotate synchronously with the rotating tube 301, and the angle between the frame 303 and the cushion bracket 100 is adjusted.

[0044] The upper half of the frame 303 is fixed with an array of arc-shaped horizontal plates 304, which are bent backwards. After the frame 303 is covered with a cushion, the cushion is bent backwards at the arc-shaped horizontal plates 304, so that the passenger can lean on the cushion more comfortably. The lower half of the frame 303 is fixed with two annular plates 305, which are distributed up and down. A linear groove 306 is opened through the top of the rotating tube 301. The installation area of ​​the lumbar support 800 is formed between the two annular plates 305.

[0045] See also Figure 4 and Figure 6 The buttocks blocking member 500 includes a support rod 1 501 and a support rod 2 502 which are connected to the front half of the two groups of covering shells 103 through rotation. The support rod 1 501 and the support rod 2 502 are both in the shape of a "J". The support rod 1 501 is located at the rear side of the support rod 2 502, and the width of the support rod 1 501 is smaller than the width of the support rod 2 502. Initially, the support rod 1 501 and the support rod 2 502 are both horizontal. After the support rod 1 501 and the support rod 2 502 are deflected to a vertical state, the top of the support rod 2 502 is higher than the top of the support rod 1 501, so that the soft cover layer on the cushion bracket 100 will form a slope with a high front and a low back under the support of the support rod 1 501 and the support rod 2 502, which can block the buttocks of the passenger at the front side to prevent the passenger from sliding forward on the cushion. The passenger does not have to increase the squeezing force between the buttocks and the cushion, thereby increasing the friction between the buttocks and the cushion to inhibit the forward sliding effect.

[0046] Rotating wheels 503 are fixedly installed at both ends of the supporting rod 1 501 and the supporting rod 2 502. The rotating wheels 503 located at the right ends of the supporting rod 1 501 and the supporting rod 2 502 are rotatably connected to the right supporting arm 101, and the rotating wheels 503 located at the left ends of the supporting rod 1 501 and the supporting rod 2 502 are rotatably connected to the rotating wheels 503 rotatably connected to the left supporting arm 102. The rotating wheels 503 have an H-shaped cross section, a gear 1 504 is fixedly installed in the middle of the rotating wheels 503, and a sliding frame 505 is arranged outside the rotating wheels 503. The sliding frame 505 has a "convex" shape in cross section, so that the rotating wheels 503 are clamped on the upper and lower edges of the sliding frame 505, thereby ensuring the stability of the connection between the rotating wheels 503 and the sliding frame 505 and preventing the sliding frame 505 from detaching from the rotating wheels 503.

[0047] Two sets of rack plates 1 506 are fixedly installed on the bottom wall of the sliding frame 505, and the two sets of rack plates 1 506 are respectively meshed with two gears 1 504. The rear baffle 507 and the front baffle 508 are fixedly installed on the opposite sides of the right supporting arm 101 and the left supporting arm 102. The rear baffle 507 is located at the rear side of the sliding frame 505, and the front baffle 508 is located at the front side of the sliding frame 505. When the sliding frame 505 slides forward, it drives the rotating wheel 503 to rotate clockwise. When the sliding frame 505 is attached to the front baffle 508, the rotating wheel 503 rotates ninety degrees.

[0048] See also Figure 6-Figure 8 The pushing assembly 600 includes a sleeve 601 fixedly mounted on the rear end of the sliding frame 505, the sleeve 601 is slidably connected to the rear baffle 507, a sliding disk 602 is slidably connected inside the sleeve 601, a push rod 603 is fixedly mounted on the rear side of the sliding disk 602, the push rod 603 is slidably connected to the rear end of the sleeve 601, a spring 1 604 is fixedly mounted between the front side of the sliding disk 602 and the inner wall of the sleeve 601, and a limiting member is arranged between the sliding disk 602 and the inner wall of the sleeve 601; the rear end of the push rod 603 on the right side is fixedly mounted on the sliding seat 403, and the rear end of the push rod 603 on the left side is connected to the wire rope 2 407 through the transmission assembly 700. When the output end of the cylinder 402 extends and pushes the slide 403 forward, the slide 403 directly pushes the pushing assembly 600 on the right side to move forward; the slide 403 pulls the wire rope 407, and then is connected to the wire rope 407 through the transmission assembly 700, thereby driving the transmission assembly 700 to push the pushing assembly 600 on the left side forward, so that the left and right groups of pushing assemblies 600 are simultaneously subjected to forward thrust.

[0049] The limiting effect of the limiting member and the elasticity of the spring 1 604 prevent the sliding plate 602 from sliding relative to the sleeve 601, so that the sliding seat 403 pushes the sliding frame 505 forward through the push rod 603 and the sleeve 601, and cooperates with the meshing effect of the rack plate 1 506 and the gear 1 504 to drive the rotating wheel 503 to rotate, thereby driving the support rod 1 501 and the support rod 2 502 to deflect. When the sliding frame 505 fits on the front baffle 508, the sliding frame 505 and the sleeve 601 are prevented from continuing to move forward. At this time, the sliding seat 403 continues to move downward, exerting a driving force on the push rod 603, and the sliding plate 602 breaks through the limiting effect of the limiting member, so that the sliding plate 602 slides in the sleeve 601. Similarly, when the slide 403 moves backward, the push rod 603 and the sleeve 601 first drive the slide frame 505 to move backward, causing the support rod 1 501 and the support rod 2 502 to deflect in the opposite direction to a horizontal state; after the slide frame 505 is attached to the rear baffle 507, the slide 403 continues to move backward, cooperating with the connecting action of the push rod 603, pulling the slide plate 602 to slide in the sleeve 601.

[0050] The position-limiting member includes embedded columns 605 arranged in an array on the circumference of the sliding plate 602, and mounting grooves 606 are arranged in an array on the circumference of the sliding plate 602. The embedded columns 605 correspond to the mounting grooves 606 one by one, and the embedded columns 605 are slidably connected in the mounting grooves 606. A second spring 607 is fixedly installed between one end of the embedded column 605 located inside the mounting groove 606 and the inner wall of the mounting groove 606. The other end of the embedded column 605 is hemispherical, and hemispherical grooves 608 are arranged in an array on the inner wall of the sleeve 601. The embedded column 605 fits on the hemispherical groove 608. Therefore, through the elasticity of the second spring 607, the embedded column 605 is tightly attached to the hemispherical groove 608, and the sliding plate 602 is restrained from sliding inside the sleeve 601.

[0051] See also Figure 2 and Figure 8-Figure 9 The transmission assembly 700 includes a gear 2 701 rotatably connected to the left supporting arm 102, a rack plate 2 702 is meshed at the bottom of the gear 2 701, a rack plate 3 703 is meshed at the top of the gear 2 701, the rack plate 2 702 and the rack plate 3 703 are both slidably connected to the left supporting arm 102, the length of the rack plate 2 702 is greater than the length of the rack plate 3 703, a fixing plate 704 is fixedly installed between the rear end of the rack plate 3 703 and the rear end of the push rod 603, a steel wire rope 3 705 is fixedly installed at the rear end of the rack plate 2 702, a steering elbow 2 706 is fixedly installed on the rear half of the left supporting arm 102, the steering elbow 2 706 passes through the steering elbow 2 706 and is inserted into the threading tube 104, and the rear end of the steel wire rope 3 705 is fixedly installed on the steel wire rope 2 407. Therefore, when the slide 403 moves forward and pulls the wire rope 2 407, the wire rope 2 407 pulls the wire rope 3 705 backward during its movement, thereby driving the rack plate 2 702 to move backward, and cooperating with the transmission action of the gear 2 701, driving the rack plate 3 703 to move forward, and pushing the pushing component 600 on the left side forward through the fixing plate 704.

[0052] See also Fig.10 The lumbar support member 800 includes two threaded collars 801, which are respectively threadedly connected to the left and right halves of the threaded rod 202. A slide plate 802 is fixedly installed on the outer wall of each of the two threaded collars 801. The slide plate 802 is slidably connected to the linear groove 306 and passes through the two annular plates 305. A guide rail 803 is fixedly installed on the inner wall of the front side of each annular plate 305. Two sliders 804 are fixedly installed on the front side of each of the slide plates 802, and the sliders 804 are slidably connected to the guide rails 803. Therefore, when the backrest bracket 300 deflects backward, the slide plate 802 deflects synchronously with the backrest bracket 300, and the threaded collar 801 rotates relative to the threaded rod 202, thereby driving the two threaded collars 801 and the slide plate 802 to slide along the linear groove 306, and making the two threaded collars 801 close to each other.

[0053] Two groups of support members are hinged at the front side of the two slides 802, and each group of support members includes a rotating arm 1 805 and a rotating arm 2 806. The rotating arm 1 805 and the rotating arm 2 806 are hinged together at the center through a pin shaft. The rear ends of the rotating arm 1 805 and the rotating arm 2 806 are respectively hinged at the front side of the two slides 802. The front ends of the rotating arm 1 805 and the rotating arm 2 806 are slidably connected with a waist support plate 807. Specifically, the front ends of the rotating arm 1 805 and the rotating arm 2 806 are hinged with an articulated seat, and the articulated seat is slidably connected to the rear side of the waist support plate 807. The front side of the waist support plate 807 is arrayed with inclined ribs 808, and the spacing between the inclined ribs 808 and the waist support plate 807 gradually increases from top to bottom. Therefore, when the two slide plates 802 approach each other, the first rotating arm 805 and the second rotating arm 806 are driven to deflect relative to each other, the front end distance between the first rotating arm 805 and the second rotating arm 806 is reduced, and the waist support plate 807 is driven to move forward, so that the soft layer outside the inclined rib plate 808 supports the waist of the passenger. When the waist support plate 807 moves forward, the knees of the rear passengers are attached to the soft layer on the rear side of the backrest bracket 300, so that the waist support plate 807 is prevented from squeezing the knees of the rear passengers.

[0054] When in use, the output end of the cylinder 402 is extended, driving the slide 403 to move forward along the slide slot 405, pulling the wire rope 1 406 and the wire rope 2 407, thereby driving the left and right annular winding wheels 410 to rotate simultaneously, and the coil spring 411 twists and accumulates elasticity;

[0055] The two annular winding wheels 410 drive the rotating tube 301 to rotate, thereby driving the frame 303 and the connecting plate 302 to deflect backwards, and adjusting the tilt angle of the backrest bracket 300;

[0056] The push rod 603 on the right is pushed forward by the slide 403, and the wire rope 2 407 moves the wire rope 3 705 forward, driving the rack plate 2 702 to move backward, driving the gear 2 701 to rotate, thereby driving the rack plate 3 703 to move forward, and then pushing the push rod 603 on the left forward through the fixing plate 704;

[0057] The push rod 603 moves forward under the thrust, and through the limiting effect of the limiting member and the elasticity of the spring 1 604, the sliding frame 505 moves forward, and cooperates with the meshing effect of the rack plate 1 506 and the gear 1 504 to drive the rotating wheel 503 to rotate, thereby driving the support rod 1 501 and the support rod 2 502 to deflect; when the sliding frame 505 is attached to the surface of the front baffle 508, the support rod 1 501 and the support rod 2 502 deflect to a vertical state, and the soft covering layer on the seat cushion bracket 100 is lifted up by the support rod 1 501 and the support rod 2 502, so that the soft covering layer of the seat cushion bracket 100 forms a slope with a high front and a low rear, so as to support the buttocks of the passenger;

[0058] During the rotation of the rotating tube 301, the threaded collar 801 and the slide plate 802 are deflected synchronously, and then the threaded connection between the threaded collar 801 and the threaded rod 202 drives the two threaded collars 801 to approach each other, drives the rotating arm 1 805 and the rotating arm 2 806 to deflect relative to each other, pushes the lumbar support plate 807 forward, and the inclined rib plate 808 supports the waist of the passenger.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aircraft seat angle adjustment device, comprising a seat cushion bracket (100), characterized in that: A support shaft (200) is fixedly mounted on the rear end of the seat cushion bracket (100), a backrest bracket (300) is rotatably connected to the support shaft (200), a deflection driving member (400) is arranged between the bottom end of the backrest bracket (300) and the support shaft (200), a buttocks blocking member (500) is arranged on the front half of the seat cushion bracket (100), and a pushing assembly (600) is arranged on the rear sides of both left and right ends of the buttocks blocking member (500), the rear end of the pushing assembly (600) located on the right side of the seat cushion bracket (100) is fixedly mounted on the deflection driving member (400), and the rear end of the pushing assembly (600) located on the left side of the seat cushion bracket (100) is connected to the deflection driving member (400) via a transmission assembly (700), and a lumbar supporting member (800) is arranged on the lower half of the backrest bracket (300); The seat cushion bracket (100) comprises a right supporting arm (101) and a left supporting arm (102); a covering shell (103) is fixedly installed on opposite sides of the right supporting arm (101) and the left supporting arm (102); a threading tube (104) is fixedly installed between the rear halves of the two covering shells (103); and a plurality of crossbeams (105) are fixedly installed between the two covering shells (103); The support shaft (200) comprises an inner core rod (201) fixedly mounted between the rear ends of the right support arm (101) and the left support arm (102); The deflection drive member (400) comprises a U-shaped plate (401) fixedly mounted on the rear half of the right supporting arm (101), a cylinder (402) fixedly mounted in the U-shaped plate (401), a slide seat (403) fixedly mounted on the front output end of the cylinder (402), a pulley (404) fixedly mounted on the right side of the slide seat (403), a slide groove (405) formed on the right supporting arm (101), and the pulley (404) slidably connected to the slide groove ( 405), a steel wire rope 1 (406) and a steel wire rope 2 (407) are fixedly installed on the rear side of the slide seat (403), the steel wire rope 2 (407) is located on the upper side of the U-shaped plate (401), and the steel wire rope 1 (406) is located on the lower side of the U-shaped plate (401), a guide tube (408) is fixedly installed on the right support arm (101), and a steering bend tube 1 (409) is fixedly installed on the opposite side of the right support arm (101) and the left support arm (102); An annular winding wheel (410) is sleeved on both ends of the inner core rod (201), a coil spring (411) is arranged inside the U-shaped plate (401), one end of the coil spring (411) is fixedly mounted on the inner core rod (201), and the other end of the coil spring (411) is fixedly mounted on the inner wall of the annular winding wheel (410); The steel wire rope 1 (406) passes through the guide tube (408) and is wound around the outer wall of the annular winding wheel (410) located on the right end of the inner core rod (201); The steel wire rope 2 (407) passes through two steering bend pipes 1 (409) and is wound around the outer wall of the annular winding wheel (410) located on the left end of the inner core rod (201); The wire rope two (407) passes through the wire threading tube (104).

2. The aircraft seat angle adjustment device according to claim 1, characterized in that: A threaded rod (202) is fixedly installed in the middle of the inner core rod (201). Thread grooves with opposite directions are provided on the left half and the right half of the threaded rod (202). Reinforcing rods (203) are fixedly installed at both ends of the threaded rod (202).

3. The aircraft seat angle adjustment device according to claim 1, characterized in that: The hip blocker (500) includes a first support rod (501) and a second support rod (502) which are rotatably connected through the front half parts of two sets of covering shells (103). Both the first support rod (501) and the second support rod (502) are in a "Ji" shape. The first support rod (501) is located at the rear side of the second support rod (502). The width of the first support rod (501) is smaller than that of the second support rod (502). Rotating wheels (503) are fixedly installed at both ends of the first support rod (501) and the second support rod (502). The cross section of the rotating wheel (503) is in an H shape. The rotating wheels (503) located at the right ends of the first support rod (501) and the second support rod (502) are rotatably connected to the right support arm (101), and the rotating wheels (503) located at the left ends of the first support rod (501) and the second support rod (502) are rotatably connected to the left support arm (102). A first gear (504) is fixedly installed in the middle of the rotating wheel (503). A sliding frame (505) is arranged on the outside of the rotating wheel (503). Two sets of first rack plates (506) are fixedly installed on the bottom wall of the sliding frame (505). The two sets of first rack plates (506) are respectively meshed with the two first gears (504). Rear baffles (507) and front baffles (508) are fixedly installed on the opposite sides of the right support arm (101) and the left support arm (102). The rear baffle (507) is located at the rear side of the sliding frame (505), and the front baffle (508) is located at the front side of the sliding frame (505).

4. The aircraft seat angle adjustment device according to claim 3, characterized in that: The pushing component (600) includes a sleeve (601) fixedly installed at the rear end of the sliding frame (505). The sleeve (601) is slidably connected through the rear baffle (507). A sliding disk (602) is slidably connected in the sleeve (601). A push rod (603) is fixedly installed on the rear side of the sliding disk (602). The push rod (603) is slidably connected through the rear end of the sleeve (601). A first spring (604) is fixedly installed between the front side of the sliding disk (602) and the inner wall of the sleeve (601). A limiting component is arranged between the sliding disk (602) and the inner wall of the sleeve (601). The rear end of the push rod (603) located on the right side is fixedly installed on the sliding seat (403), and the rear end of the push rod (603) located on the left side is connected to the wire rope two (407) through a transmission component (700).

5. The aircraft seat angle adjustment device according to claim 4, characterized in that: The limiting member comprises embedded columns (605) arranged in an array on the circumferential surface of the sliding disk (602); the circumferential surface of the sliding disk (602) is provided with mounting grooves (606) in an array; the embedded columns (605) correspond to the mounting grooves (606) in a one-to-one manner; the embedded columns (605) are slidably connected in the mounting grooves (606); a second spring (607) is fixedly installed between one end of the embedded column (605) located inside the mounting groove (606) and the inner wall of the mounting groove (606); the other end of the embedded column (605) is hemispherical; the inner wall of the sleeve (601) is provided with hemispherical grooves (608) in an array; the embedded column (605) fits in the hemispherical grooves (608).

6. The aircraft seat angle adjustment device according to claim 4, characterized in that: The transmission assembly (700) includes a gear 2 (701) rotatably connected to the left supporting arm (102), a rack plate 2 (702) meshing at the bottom of the gear 2 (701), a rack plate 3 (703) meshing at the top of the gear 2 (701), the rack plate 2 (702) and the rack plate 3 (703) both being slidably connected to the left supporting arm (102), the length of the rack plate 2 (702) being greater than the length of the rack plate 3 (703), and the rack plate A fixing plate (704) is fixedly installed between the rear end of the third (703) and the rear end of the push rod (603), a steel wire rope (705) is fixedly installed on the rear end of the rack plate (702), a steering bend pipe (706) is fixedly installed on the rear half of the left support arm (102), the steering bend pipe (706) passes through the steering bend pipe (706) and is inserted into the threading tube (104), and the rear end of the steel wire rope (705) is fixedly installed on the steel wire rope (407).

7. The aircraft seat angle adjustment device according to claim 1, characterized in that: The backrest bracket (300) comprises a rotating tube (301) fixedly mounted between two sets of annular winding wheels (410); the rotating tube (301) penetrates and is rotatably connected to the rear ends of the two covering shells (103); the rotating tube (301) is sleeved on the outside of the threaded rod (202) and the reinforcement rod (203); the inner diameter of the rotating tube (301) is equal to the diameter of the reinforcement rod (203); two connecting plates (302) are fixedly mounted on the outer wall of the rotating tube (301); the two connecting plates (302) are respectively attached to the two covering shells (103), the tops of the two connecting plates (302) are fixedly mounted with a frame frame (303), the upper half of the frame frame (303) is fixed with an arc-shaped horizontal plate (304) in an array, the arc-shaped horizontal plate (304) is bent toward the rear side, the lower half of the frame frame (303) is fixedly mounted with two annular plates (305), the two annular plates (305) are distributed up and down, and a straight groove (306) is opened through the top of the rotating tube (301).

8. The aircraft seat angle adjustment device according to claim 7, characterized in that: The lumbar support member (800) comprises two threaded collars (801), the two threaded collars (801) being threadedly connected to the left and right halves of the threaded rod (202) respectively, a slide plate (802) being fixedly mounted on the outer walls of the two threaded collars (801), the slide plate (802) being slidably connected to the linear groove (306) and passing through the two annular plates (305), a guide rail (803) being fixedly mounted on the inner wall of the front side of each annular plate (305), and two sliders (804) being fixedly mounted on the front side of each slider (802), the sliders (804) being slidably connected to the guide rail (803); Two groups of support members are hinged on the front sides of the two slide plates (802), and each group of support members includes a rotating arm 1 (805) and a rotating arm 2 (806). The centers of the rotating arm 1 (805) and the rotating arm 2 (806) are hinged together through a pin shaft. The rear ends of the rotating arm 1 (805) and the rotating arm 2 (806) are respectively hinged on the front sides of the two slide plates (802). The front ends of the rotating arm 1 (805) and the rotating arm 2 (806) are slidably connected with a waist support plate (807). The front sides of the waist support plates (807) are arrayed with inclined rib plates (808), and the spacing between the inclined rib plates (808) and the waist support plates (807) gradually increases from top to bottom.

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