seat

Abstract

The application relates to a seat, comprising: a support frame; a backrest assembly rotatably connected to one end of the support frame; and a seat pan assembly slidably arranged on the support frame and drivingly connected to the other end of the backrest assembly, the seat pan assembly being configured to adjust the angle of the backrest assembly relative to the support frame through sliding movement. In the device, the backrest assembly can be swung up and down about the support frame, the seat pan assembly is slidably arranged on the support frame and can slide forward and backward along the support frame. The seat pan assembly is drivingly connected to the backrest assembly, when the seat pan assembly slides along the support frame, the seat pan assembly rotates about the position of the rotary connection between the seat pan assembly and the support frame as a rotating fulcrum, so as to change the inclination angle of the backrest assembly relative to the support frame and complete the adjustment of the inclination angle of the seat backrest. The device can synchronously change the position of the seat pan assembly and the inclination angle of the backrest, match the change of the sitting posture of a human body and improve the riding comfort.

Description

Technical Field

[0001] This application relates to the field of aircraft cabin equipment technology, and in particular to a seat. Background Technology

[0002] Seats are typically provided in the passenger and cargo cabin areas of civil aircraft to meet the short-term seating and duty needs of flight attendants or cargo personnel during flight. Currently, traditional seats mostly adopt fixed or simple flip-up structures.

[0003] However, existing chairs are difficult to adapt to the needs of different heights and working postures, and sitting for a long time can easily cause back fatigue. Summary of the Invention

[0004] This application provides a seat that solves the problem in the prior art that seats cannot adapt to the needs of different heights and working postures.

[0005] According to one aspect of this application, a seat is provided, comprising:

[0006] Supporting framework;

[0007] A backrest assembly, one end of which is rotatably connected to the support frame;

[0008] A chair basin assembly is slidably disposed on the support frame, and the other end of the chair basin assembly is connected to the backrest assembly via a drive connection. The chair basin assembly is configured to adjust the angle of the backrest assembly relative to the support frame through sliding movement.

[0009] In one embodiment, the seat further includes a linkage component; one end of the linkage component is tractively connected to the seat basin assembly, and the other end of the linkage component is tractively connected to the backrest assembly; the seat basin assembly is tractively connected to the backrest assembly via the linkage component; the seat basin assembly is configured to adjust the angle of the backrest assembly relative to the support frame through the sliding motion and the linkage component.

[0010] In one embodiment, the backrest assembly includes a groove; the basin assembly includes a basin body; the basin body is slidably disposed on the support frame;

[0011] One end of the linkage component is rotatably connected to the main body of the chair basin, and the other end of the linkage component is slidably connected to the slide groove; the main body of the chair basin is connected to the backrest component through the linkage component.

[0012] In one embodiment, the seat further includes a slide: the slide is rotatably disposed on the support frame, and the seat body is slidably disposed on the slide; the seat body is slidably disposed on the support frame via the slide.

[0013] In one embodiment, the chair basin assembly further includes a positioning component; the positioning component is disposed on the chair basin body and is used to position the slide seat.

[0014] In one embodiment, the support frame further includes a limiting hole; the limiting hole is formed on the side of the slide facing the main body of the chair basin;

[0015] The positioning component includes a locking pin; the locking pin is slidably disposed on the chair body and is used to insert into the limiting hole; the positioning component positions the slide seat through the locking pin.

[0016] In one embodiment, the positioning component further includes: a connector, one end of which is connected to the locking pin for pulling the locking pin;

[0017] A first reset component, one end of which is connected to the locking pin and the other end of which is connected to the chair body, is used to provide a reset driving force for the locking pin.

[0018] In one embodiment, the positioning component further includes: a button, the button being slidably disposed on the chair basin body, the button being connected to the other end of the connector;

[0019] The second reset component has one end connected to the button and the other end connected to the chair body, and is used to provide the reset driving force for the button.

[0020] In one embodiment, the linkage component includes a sliding shaft; the sliding shaft is slidably disposed in the slide groove;

[0021] The slide includes: a first end, which is configured as the end of the slide away from the main body of the chair basin;

[0022] The second end is configured such that the slide groove is close to one end of the chair basin body; the first end and the second end are used to limit the sliding shaft.

[0023] In one embodiment, the support frame further includes a pivot; the backrest assembly is rotatably disposed on the support frame, and the backrest assembly is rotatably disposed on the support frame via the pivot;

[0024] The support frame also includes handrails; the handrails are rotatably mounted on both sides of the support frame to support the passenger's arms.

[0025] This application has the following beneficial effects:

[0026] In this device, the support frame serves as the load-bearing base for the entire seat assembly. The backrest assembly is rotatably connected to the support frame, allowing it to tilt and swing around the frame. The seat basin assembly is slidably mounted to the support frame, enabling it to slide back and forth along the frame. The seat basin assembly and backrest assembly form a transmission connection. When the seat basin assembly slides along the support frame, it rotates around its rotatable connection point with the support frame, thereby changing the tilt angle of the backrest assembly relative to the support frame and adjusting the seat back angle. This device can simultaneously change the position of the seat basin assembly and the backrest tilt angle to match changes in human posture, improving seating comfort and solving the problem in existing technologies where the seat basin position and backrest angle cannot be adjusted in tandem. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the seat structure in its stowed state according to one embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the seat structure in its unfolded state according to one embodiment of this application.

[0029] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0030] Figure 4 This is a top view of the seat in one embodiment of this application.

[0031] Figure 5 for Figure 4 Enlarged view of the structure at point B.

[0032] Figure 6 for Figure 4 Enlarged view of the structure at point C.

[0033] Figure 7 This is a top view of the chair basin assembly in one embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Supporting framework;

[0036] 110. Rotary pivot; 120. Handrail;

[0037] 130. Slide; 131. Limiting hole;

[0038] 200. Chair basin assembly;

[0039] 210. Chair basin body;

[0040] 220. Positioning component; 221. Button; 222. Second reset component; 223. Connector; 224. Locking pin; 225. First reset component;

[0041] 300. Backrest assembly;

[0042] 310. Slide groove; 311. First end; 312. Second end;

[0043] 400. Linkage components;

[0044] 410. Sliding shaft. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] See appendix Figure 1 -Appendix Figure 2 , attached Figure 1 -Appendix Figure 2 This invention provides a schematic diagram of the overall structure of a seat according to an embodiment of the present application. The seat includes a support frame 100.

[0052] Backrest assembly 300, one end of which is rotatably connected to support frame 100;

[0053] The chair basin assembly 200 is slidably disposed on the support frame 100. The chair basin assembly 200 is connected to the other end of the backrest assembly 300 by means of transmission. The chair basin assembly 200 is configured to adjust the angle of the backrest assembly 300 relative to the support frame 100 by means of sliding movement.

[0054] In some embodiments, the support frame 100 is the load-bearing base of the entire seat assembly, the backrest assembly 300 is rotatably connected to the support frame 100, the backrest assembly 300 can pitch and swing around the corresponding rotation point of the support frame 100, the seat basin assembly 200 is slidably assembled to the support frame 100, and the seat basin assembly 200 can slide back and forth along the support frame 100.

[0055] In some embodiments, the seat basin assembly 200 and the backrest assembly 300 are connected by a transmission mechanism, and the two are linked in action. When a pushing or pulling force is applied to the seat basin assembly 200, causing it to slide along the support frame 100, the seat basin assembly 200 transmits a driving force to the backrest assembly 300 through the transmission connection structure. After receiving this driving force, the backrest assembly 300 rotates with its rotational connection position with the support frame 100 as the fulcrum, thereby changing the tilt angle of the backrest assembly 300 relative to the support frame 100, and completing the adjustment of the seat backrest angle.

[0056] Similarly, if an external force drives the backrest assembly 300 to rotate, the transmission connection structure will also drive the seat basin assembly 200 to slide synchronously on the support frame 100, so as to realize the synchronous linkage adjustment of the seat basin and the backrest.

[0057] In some embodiments, a transmission method is adopted in which the seat basin assembly 200 slides in conjunction with the rotation of the backrest assembly 300. The backrest tilt angle can be adjusted synchronously with a single sliding action. The operation is simple; the user only needs to push or pull the seat basin assembly 200 to switch the backrest angle. The linkage adjustment of the seat basin assembly 200 and the backrest assembly 300 can simultaneously change the seat depth and backrest tilt angle to match changes in human sitting posture, accommodating various postures such as lying down for rest and standing upright, greatly improving seating comfort.

[0058] See appendix Figure 2 -Appendix Figure 3 The seat also includes a linkage component 400; one end of the linkage component 400 is connected to the seat basin assembly 200, and the other end of the linkage component 400 is connected to the backrest assembly 300; the seat basin assembly 200 is connected to the backrest assembly 300 via the linkage component 400; the seat basin assembly 200 is configured to adjust the angle of the backrest assembly 300 relative to the support frame 100 through sliding movement and the linkage component 400.

[0059] In some embodiments, the linkage component 400 serves as a transmission intermediary, with its two ends respectively connected to the seat basin assembly 200 and the backrest assembly 300, establishing a power transmission path between them. When the seat basin assembly 200 slides along the support frame 100, the displacement driving force output by the seat basin assembly 200 is directly transmitted to one end of the linkage component 400. The linkage component 400 then synchronously undergoes displacement and oscillation, and then transmits the driving force from the other end to the backrest assembly 300, driving the backrest assembly 300 to rotate around the support frame 100, thus completing the backrest tilt angle adjustment. When the backrest assembly 300 is rotated in the opposite direction, the power can also be transmitted in the reverse direction through the linkage component 400, causing the seat basin assembly 200 to slide synchronously, realizing bidirectional linkage transmission.

[0060] See appendix Figure 2 -Appendix Figure 3The backrest assembly 300 includes a slide 310; the basin assembly 200 includes a basin body 210; the basin body 210 is slidably disposed on the support frame 100;

[0061] One end of the linkage component 400 is rotatably connected to the chair basin body 210, and the other end of the linkage component 400 is slidably connected to the slide groove 310; the chair basin body 210 is connected to the backrest component 300 through the linkage component 400.

[0062] In some embodiments, the support frame 100 serves as a load-bearing base, and the seat basin body 210 can reciprocate along the support frame 100. One end of the linkage component 400 is hinged to the seat basin body 210, and the other end is slidably fitted into the groove 310 provided in the backrest component 300.

[0063] In some embodiments, when the chair basin body 210 is pushed to slide along the support frame 100, the chair basin body 210 pulls the linkage component 400 to move synchronously. The end of the linkage component 400 slides inside the slide groove 310. The slide groove 310 is subjected to the pushing and pulling force of the linkage component 400, causing the entire backrest assembly 300 to rotate around the support frame 100, thereby changing the backrest tilt angle. Different sliding distances of the chair basin body 210 result in corresponding changes in the sliding position of the linkage component 400 within the slide groove 310, and the rotation angle of the backrest assembly 300 is adjusted accordingly. In the reverse operation, an external force moves the backrest assembly 300, causing the slide groove 310 to press against the end of the linkage component 400, which then pulls the chair basin body 210 to slide along the support frame 100, achieving bidirectional synchronous linkage. The linkage component 400 and the chair basin body 210 are rotatably connected, allowing for adaptive adjustment of the transmission angle and preventing movement jamming.

[0064] In some embodiments, the end of the linkage component 400 can slide freely within the slide groove 310. In conjunction with the rotating joint between the linkage component 400 and the chair body 210, there are no dead spots during the movement, and the chair body 210 slides smoothly throughout its entire range. The slide groove 310 can limit the sliding trajectory of the end of the linkage component 400, constrain the correspondence between the sliding stroke of the chair body 210 and the rotation angle of the backrest component 300, ensuring uniform and controllable backrest angle adjustment and a smooth transition to a sitting posture.

[0065] See appendix Figure 2 Appendix Figure 4 and attached Figure 7 The seat also includes a slide 130: the slide 130 is rotatably mounted on the support frame 100, and the seat body 210 is slidably mounted on the slide 130; the seat body 210 is slidably mounted on the support frame 100 via the slide 130.

[0066] In some embodiments, the slide 130 is rotatably mounted on the support frame 100, and the chair basin body 210 is slidably mounted on the slide 130, so that the chair basin body 210 achieves sliding engagement with the support frame 100 by relying on the slide 130. Under normal use, the slide 130 maintains a horizontal posture, and the chair basin body 210 can slide along the slide 130 to complete the backrest linkage adjustment.

[0067] When folding and storing, the main body of the chair basin 210 is pushed to slide along the slide 130 towards the backrest assembly 300. Simultaneously, the main body of the chair basin 210 drives the backrest assembly 300 to flip and fold together via the linkage assembly 400. Then, the slide 130 rotates upward around the support frame 100 and lifts up. The main body of the chair basin 210 rotates and folds together with the slide 130, significantly reducing the overall space occupied by the chair and completing the folding and storage action. The slide 130 has both sliding support and rotational folding functions, separating the sliding path of the main body of the chair basin 210 from the folding rotation fulcrum. The two sets of actions, sliding adjustment and rotational storage, do not interfere with each other.

[0068] In some embodiments, the slide 130 serves as an intermediate transition component, providing a sliding track for the seat body 210 to ensure daily posture adjustment. On the other hand, it can rotate around the support frame 100, causing the seat body 210 to be lifted and folded as a whole. One set of components simultaneously realizes both sliding adjustment and folding storage functions, reducing the number of parts and the volume space occupied by the aircraft seat.

[0069] In some embodiments, the main body 210 of the seat basin first slides and folds along the slide seat 130 and then rotates and rises with the slide seat 130. The double-layer folding action can maximize the compression of the seat's front and rear and vertical space, resulting in a smaller volume after storage, which is suitable for the needs of small storage and passage space in the cabin.

[0070] In some embodiments, a guide rail is mounted on the slide 130, and the seat body 210 cooperates with the guide rail to achieve stable sliding movement. The guide rail is made of a low-friction material to reduce resistance generated during sliding and reduce structural wear. By reasonably setting the guide rail length and sliding stroke, the seat position can be effectively adjusted while ensuring a compact structural layout, and stable sliding performance can be maintained under the load of passengers and vibration loads of the machine body.

[0071] See appendix Figure 2 Appendix Figure 4 and attached Figure 7 The chair basin assembly 200 also includes a positioning component 220; the positioning component 220 is disposed on the chair basin body 210 and is used to position the slide 130.

[0072] In some embodiments, the positioning component 220 is integrally mounted on the seat basin body 210, the slide 130 can rotate relative to the support frame 100, and the seat basin body 210 can slide relative to the slide 130. When the seat is in normal use, the positioning component 220 locks the relative position between the slide 130 and the seat basin body 210, restricts the slide 130 from rotating, keeps the slide 130 in a horizontal bearing posture, and ensures that the seat basin body 210 can only slide along the slide 130 to complete the backrest angle adjustment.

[0073] When the seat needs to be folded and stored, the locking constraint of the positioning component 220 on the slide 130 is released, and the slide 130 can rotate freely around the support frame 100, causing the seat body 210 to flip and fold, completing the storage operation; after the seat is unfolded, the positioning component 220 relocks the slide 130, restoring the stable use state.

[0074] See appendix Figure 6 -Appendix Figure 7 The support frame 100 also includes a limiting hole 131; the limiting hole 131 is opened on the side of the slide 130 facing the chair body 210;

[0075] The positioning component 220 includes a locking pin 224; the locking pin 224 is slidably disposed on the chair body 210 and is used to insert into the limiting hole 131; the positioning component 220 positions the slide 130 through the locking pin 224.

[0076] In some embodiments, the limiting hole 131 is formed on the end face of the slide 130 facing the seat body 210, and the locking pin 224 is slidably assembled inside the seat body 210, the two forming a pin locking engagement structure.

[0077] In some embodiments, under normal use, the locking pin 224 extends towards the slide 130 and inserts into the limiting hole 131. Simultaneously, the locking pin 224 engages the seat basin body 210 and the slide 130, restricting the slide 130 from rotating relative to the support frame 100, thus completing the positioning constraint of the slide 130. When it is necessary to fold the seat or adjust the position of the seat basin body 210, the locking pin 224 is driven to retract along the seat basin body 210, causing the locking pin 224 to disengage from the limiting hole 131, releasing the locking relationship between the seat basin body 210 and the slide 130. The slide 130 can then rotate around the support frame 100 to achieve folding and storage. After the seat is unfolded and reset, the locking pin 224 extends again and inserts into the limiting hole 131, re-locking the slide 130's posture.

[0078] In some embodiments, the locking pin 224 is inserted into the limiting hole 131 for positioning. The locking structure has a small clearance, which improves the stability of the seating support after the slide 130 is locked. The locking and unlocking of the slide 130 can be completed solely by the extension and retraction of the locking pin 224, making the operation simple and smooth.

[0079] In some embodiments, the slide 130 is provided with a plurality of limiting holes 131 on the side facing the chair basin body 210, and the plurality of limiting holes 131 are arranged sequentially along the sliding direction of the chair basin body 210 relative to the slide 130. After the chair basin body 210 is pushed back and forth to a sliding position that adapts to the user's leg length, the button 221 is released. The second reset member 222 drives the button 221 to reset, and the first reset member 225 pushes the locking pin 224 to extend and engage with the corresponding limiting hole 131, locking the current sliding position of the chair basin body 210. This, in conjunction with the linkage component 400, synchronously fixes the tilt angle of the backrest component 300, adapting to the sitting posture needs of different users.

[0080] See appendix Figure 5 -Appendix Figure 7 The positioning component 220 also includes a connector 223, one end of which is connected to the locking pin 224 for pulling the locking pin 224.

[0081] The first reset member 225 has one end connected to the locking pin 224 and the other end connected to the chair body 210, and is used to provide the reset driving force for the locking pin 224.

[0082] In some embodiments, the connector 223 is a flexible steel cable with a locking pin 224 fixedly connected to one end. When the connector 223 is pulled, the steel cable pulls the locking pin 224 to slide back along the chair body 210, causing the locking pin 224 to disengage from the limiting hole 131 on the slide 130 and releasing the positioning lock of the slide 130.

[0083] In some embodiments, the first reset member 225 is connected at both ends to the locking pin 224 and the chair body 210, respectively. During the retraction of the locking pin 224, the first reset member 225 is compressed / stretched and accumulates elastic potential energy. After the connector 223 is released, the first reset member 225 releases the elastic driving force, pushing the locking pin 224 to automatically extend outward, so that the locking pin 224 is re-inserted into the limiting hole 131, automatically completing the reset and locking of the slide 130. The connector 223, made of flexible steel cable, can adapt to narrow bending spaces and is not limited by the installation angle when transmitting tension.

[0084] In some embodiments, the connector 223 is made of flexible steel cable, which can be bent and arranged arbitrarily to fit the narrow and complex assembly space inside the seat body 210. It is not constrained by the position of the locking pin 224, and the layout is flexible. The locking pin 224 is unlocked by the traction of the connector 223. Only a pulling force is needed to complete the unlocking action, which is labor-saving and simple. The first reset member 225 continuously provides an outward pushing reset force to the locking pin 224. After the seat is unfolded, the locking pin 224 can automatically engage with the limiting hole 131 without the need for manual pushing of the locking pin 224, resulting in a high degree of automation in locking.

[0085] See appendix Figure 5 -Appendix Figure 7 The positioning component 220 also includes: a button 221, which is slidably disposed on the chair basin body 210, and the button 221 is connected to the other end of the connector 223;

[0086] The second reset member 222 has one end connected to the button 221 and the other end connected to the chair body 210, and is used to provide the reset driving force for the button 221.

[0087] In some embodiments, button 221 is slidably mounted on the outside of the seat body 210, and button 221 is connected to the end of connector 223 made of flexible steel cable away from locking pin 224. The two ends of second reset member 222 abut against button 221 and seat body 210 respectively, and under normal conditions, second reset member 222 holds button 221 in the initial position on the outside.

[0088] In some embodiments, pressing button 221 causes it to slide along the seat body 210. Button 221 pulls on connector 223, generating tension. Connector 223 pulls locking pin 224 back out of limiting hole 131, thus unlocking slide 130. After releasing button 221, second reset member 222 releases elastic driving force, pushing button 221 to slide outward and reset. At the same time, tension in connector 223 disappears, and first reset member 225 drives locking pin 224 to extend and reset.

[0089] In some embodiments, the button 221 is exposed on the body 210 of the chair basin, allowing the user to press and operate it intuitively and conveniently. The second reset member 222 independently provides the rebound force for the button 221, so that the button 221 automatically returns to its original position after being released, and will not remain in the pressed unlocked state.

[0090] See appendix Figure 2 -Appendix Figure 3 The linkage component 400 includes a slide shaft 410; the slide shaft 410 is slidably disposed in the slide groove 310;

[0091] The slide 310 includes: a first end 311, which is configured as the end of the slide 310 away from the main body 210 of the chair basin;

[0092] The second end 312 is configured as the end of the slide groove 310 near the main body 210 of the chair basin; the first end 311 and the second end 312 are used to limit the slide shaft 410.

[0093] In some embodiments, the slide shaft 410 is mounted on the end of the linkage assembly 400 and slidably embedded in the slide groove 310 of the backrest assembly 300. The slide groove 310 is divided along the length direction into a first end 311 away from the seat basin assembly 200 and a second end 312 close to the seat basin assembly 200.

[0094] In some embodiments, when the chair basin body 210 slides back and forth along the slide seat 130, the linkage component 400 moves synchronously with the chair basin body 210, causing the slide shaft 410 to slide back and forth within the slide groove 310. When the slide shaft 410 slides to the first end 311 of the slide groove 310, it is blocked and limited by the end face. At this time, the chair basin body 210 is in the outermost position, and the backrest component 300 reaches the maximum reclining angle.

[0095] In some embodiments, when the slide shaft 410 slides to the second end 312 of the slide groove 310, it is blocked and limited by the end face. At this time, the chair basin body 210 is retracted, and the backrest assembly 300 is upright and retracted to the minimum reclining angle. The first end 311 and the second end 312 cooperate to limit the sliding stroke of the slide shaft 410, constrain the sliding range of the chair basin assembly 200 and the rotation amplitude of the backrest assembly 300, and prevent interference caused by overtravel of the components.

[0096] In some embodiments, the sliding shaft 410 is directly limited by the first end 311 and the second end 312 of the slide groove 310 itself, eliminating the need for additional independent limiting blocks, reducing the number of parts, simplifying the structure, and meeting the lightweight design requirements of aviation seats. The limiting at both ends restricts the sliding range of the sliding shaft 410, thereby fixing the backrest assembly 300 in its maximum recline and minimum upright positions, improving safety during use.

[0097] See appendix Figure 2 The support frame 100 also includes a pivot 110; the backrest assembly 300 is rotatably mounted on the support frame 100, and the backrest assembly 300 is rotatably mounted on the support frame 100 via the pivot 110.

[0098] In some embodiments, the pivot 110 is fixedly mounted on the support frame 100, and the backrest assembly 300 is sleeved on the outside of the pivot 110, so that the pivot 110 can be used as a pivot point to achieve pitch rotation relative to the support frame 100. When the chair basin body 210 slides, it drives the linkage assembly 400 and the sliding shaft 410 to move along the slide groove 310. The sliding shaft 410 applies a pushing and pulling force to the slide groove 310, which drives the backrest assembly 300 to rotate around the pivot 110, thereby changing the backrest tilt angle.

[0099] When the sliding shaft 410 is stopped against the first end 311 and the second end 312 of the sliding groove 310, the rotational stroke of the backrest assembly 300 is restricted, and the rotating shaft 110 bears the entire rotational load of the backrest assembly 300, stably supporting the backrest to complete the angle adjustment.

[0100] See appendix Figure 2 The support frame 100 also includes handrails 120; the handrails 120 are rotatably disposed on both sides of the support frame 100 to support the passenger's arms.

[0101] In some embodiments, armrests 120 are rotatably mounted on the left and right sides of the support frame 100, and the armrests 120 can be flipped upwards or lowered relative to the support frame 100. During normal seating, the armrests 120 are lowered to a horizontal position to support the passenger's arms. When it is necessary to enter or exit the seat, or to fold and store the seat, the armrests 120 can be rotated upwards to eliminate lateral obstruction, increase the seat passage space, and prevent the armrests 120 from interfering with the folding motion of the seat basin assembly 200 and the backrest assembly 300. The support frame 100 provides a rotatable mounting base for the armrests 120 and bears the vertical loads applied by the armrests 120 and the arms.

[0102] In some embodiments, the seat has three typical usage states:

[0103] Folded position: In the folded position, the seat basin body 210 is located inside the guide rail, and the backrest assembly 300 maintains its initial angle. At this time, the overall structure of the seat is relatively compact, occupying less space, which is conducive to the passage of passengers in the cabin and the utilization of space.

[0104] In the unfolded state: The occupant pushes the seat basin body 210 outward, causing it to rotate outward and unfold into a seating position under the action of the rotating structure. During the rotation and unfolding process of the seat basin body 210, the linkage component 400 synchronously drives the backrest component 300 to tilt forward slightly, so that the backrest component 300 and the seat basin body 210 form a basic posture relationship suitable for sitting, thereby transforming the seat from a folded state to a livable unfolded state. At the same time, the armrests 120 structure on both sides of the seat can be flipped down from the storage position to the use position to provide necessary arm support for the occupant, thereby further improving the stability and comfort of the seat in the sitting position.

[0105] Comfortable State: With the chair in the unfolded state, the occupant presses button 221 to release the locking pin 224, allowing the chair basin body 210 to slide outward along the guide rail. Once the chair basin body 210 has moved forward along the guide rail to the target position, the locking pin 224 inserts into the corresponding position limiting hole 131, thereby reliably locking the chair basin body 210 at that position.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A type of seat, characterized in that, include: Support frame (100); A backrest assembly (300), one end of which is rotatably connected to the support frame (100); A basin assembly (200) is slidably disposed on the support frame (100), and the basin assembly (200) is connected to the other end of the backrest assembly (300) via a drive connection; the basin assembly (200) is configured to adjust the angle of the backrest assembly (300) relative to the support frame (100) by sliding movement.

2. The seat according to claim 1, characterized in that, The seat also includes a linkage component (400). One end of the linkage component (400) is connected to the seat basin assembly (200) and the other end of the linkage component (400) is connected to the backrest assembly (300). The seat basin assembly (200) is connected to the backrest assembly (300) via the linkage component (400). The seat basin assembly (200) is configured to adjust the angle of the backrest assembly (300) relative to the support frame (100) through the sliding motion and the linkage component (400).

3. The seat according to claim 2, characterized in that, The backrest assembly (300) includes a slide (310); The basin assembly (200) includes a basin body (210); the basin body (210) is slidably disposed on the support frame (100); One end of the linkage component (400) is rotatably connected to the chair basin body (210), and the other end of the linkage component (400) is slidably connected to the slide groove (310); the chair basin body (210) is connected to the backrest component (300) through the linkage component (400).

4. The seat according to claim 3, characterized in that, The seat also includes a slide (130): The slide (130) is rotatably mounted on the support frame (100), and the basin body (210) is slidably mounted on the slide (130); the basin body (210) is slidably mounted on the support frame (100) via the slide (130).

5. The seat according to claim 4, characterized in that, The chair basin assembly (200) also includes a positioning component (220); The positioning component (220) is disposed on the main body of the chair basin (210) and is used to position the slide (130).

6. The seat according to claim 5, characterized in that, The support frame (100) also includes a limiting hole (131). The limiting hole (131) is opened on the side of the slide (130) facing the main body (210); The positioning component (220) includes a locking pin (224); The locking pin (224) is slidably disposed on the chair body (210) and is used to insert into the limiting hole (131); the positioning component (220) positions the slide (130) through the locking pin (224).

7. The seat according to claim 6, characterized in that, The positioning component (220) also includes: A connector (223), one end of which is connected to the locking pin (224) for pulling the locking pin (224); The first reset member (225) is connected at one end to the locking pin (224) and at the other end to the chair body (210), and is used to provide the reset driving force for the locking pin (224).

8. The seat according to claim 7, characterized in that, The positioning component (220) further includes: A button (221) is slidably disposed on the main body (210) of the chair basin, and the button (221) is connected to the other end of the connector (223); The second reset member (222) is connected at one end to the button (221) and at the other end to the chair body (210), and is used to provide the reset driving force for the button (221).

9. The seat according to any one of claims 3-8, characterized in that, The linkage component (400) includes a slide shaft (410). The sliding shaft (410) is slidably disposed in the sliding groove (310); The groove (310) includes: The first end (311) is configured as the end of the slide (310) away from the main body (210); The second end (312) is configured such that the slide groove (310) is close to one end of the chair basin body (210); the first end (311) and the second end (312) are used to limit the slide shaft (410).

10. The seat according to any one of claims 1-8, characterized in that, The support frame (100) also includes a pivot (110). The backrest assembly (300) is rotatably mounted on the support frame (100), and the backrest assembly (300) is rotatably mounted on the support frame (100) via the pivot (110). And / or, the support frame (100) also includes a handrail (120). The armrests (120) are rotatably mounted on both sides of the support frame (100) to support the occupant's arms.

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