Seat assembly and vehicle

Abstract

The utility model provides a kind of seat assembly and carrier, seat assembly includes: backrest;Headrest is movably arranged in the upper of backrest at least along front-back direction;Transmission assembly is connected between backrest and headrest, transmission assembly is slidably arranged in backrest, and transmission assembly is connected with headrest;Locking assembly is arranged in backrest, locking assembly has locking position and unlocking position, when locking assembly is in locking position, the relative position between fixed transmission assembly and backrest, when locking assembly is in unlocking position, separate from transmission assembly.The seat assembly of the utility model embodiment sets transmission assembly and locking assembly in backrest, the comfort of headrest is high, and the damage probability of transmission assembly and locking assembly is low.

Description

Technical Field

[0001] This utility model relates to the field of vehicle seating technology, specifically to a seating assembly and a vehicle. Background Technology

[0002] Seat components in related technologies typically include a backrest and a headrest. The headrest comprises an outer cover, a frame, and an adjustment mechanism. The frame and adjustment mechanism are housed within the outer cover. The adjustment mechanism is mounted on the frame and connected to the outer cover, allowing adjustment of the outer cover's position in the fore-and-aft direction to suit the passenger's needs. However, the adjustment mechanism occupies internal space in the headrest, which affects the comfort of the outer cover's head support. Furthermore, the headrest's small size results in poor cushioning against external impacts, and the adjustment mechanism is easily damaged by stress. Utility Model Content

[0003] One objective of this utility model is to provide a seat assembly to solve the problems of poor comfort and easy damage to the adjustment assembly caused by the adjustment assembly being installed inside the headrest; the second objective is to provide a vehicle.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A seat assembly includes: a backrest; a headrest movably disposed above the backrest at least in a front-back direction; a transmission assembly connected between the backrest and the headrest, the transmission assembly being slidably disposed within the backrest in a front-back direction and connected to the headrest; and a locking assembly disposed within the backrest, the locking assembly having a locked position and an unlocked position, wherein when the locking assembly is in the locked position, it fixes the relative position between the transmission assembly and the backrest, and when the locking assembly is in the unlocked position, it is separated from the transmission assembly.

[0006] Based on the above characteristics, when adjusting the headrest's position in the fore-and-aft direction, first switch the locking component to the unlocked position, then adjust the headrest to a position that meets the passenger's needs. The transmission component moves relative to the backrest accordingly. Finally, switch the locking component to the locked position, locking the transmission component and backrest to their current positions. At this point, the relative positions of the headrest and backrest remain unchanged, and the headrest remains in a position that meets the passenger's needs. Compared to placing the transmission component and locking component inside the headrest, this embodiment of the invention places them inside the backrest. The headrest's structure is simple. On the one hand, it avoids contact between the transmission component or locking component and the passenger's head, improving the headrest's comfort. On the other hand, the large internal space of the backrest provides more room for the movement of the transmission component and locking component, which helps to buffer external kinetic energy impacts, reduces the probability of damage to the transmission component and locking component, and extends the service life of the transmission component and locking component.

[0007] Furthermore, the transmission assembly includes a rack, and the seat assembly also includes a gear disposed within the backrest. The rack and the gear mesh, and when the locking assembly is in the locked position, it prevents the gear from rotating; when the locking assembly is in the unlocked position, it disengages from the gear.

[0008] Based on the above characteristics, on the one hand, when the locking component prevents the gear from rotating, the gear also prevents the rack from moving, thereby limiting the transmission component to the current position and thus limiting the headrest to the current position; on the other hand, when the locking component separates from the gear, the rack can move with the headrest, the gear rotates accordingly, the locking component switches to the locked position again, the gear stops rotating, and the rack and headrest are fixed in the current position. The headrest can be fixed in almost any position within the stroke, realizing stepless adjustment of the headrest position.

[0009] Furthermore, the seat assembly also includes a brake disc, which is coaxially arranged with the gear. The outer peripheral surface of the brake disc is provided with a plurality of slots. The locking assembly includes a protrusion. When the locking assembly is in the locked position, the protrusion is inserted into at least one of the slots. When the locking assembly is in the unlocked position, the protrusion is disengaged from the slot.

[0010] Based on the above characteristics, the locking component indirectly limits the position of the gear by limiting the position of the brake disc. The locking component does not need to directly contact the gear, which can reduce the force on the gear, reduce the risk of gear damage, and extend the service life of the gear. On the other hand, the gear and rack cooperate, and the brake disc and locking component cooperate, which can reduce the impact of the movement of the locking component on the gear position, which is conducive to improving the positioning reliability of the headrest.

[0011] Furthermore, the seat assembly also includes: a button protruding from the backrest, the button being connected to the locking assembly, pressing the button driving the locking assembly to move from the locked position to the unlocked position; and a first elastic member disposed within the backrest, the first elastic member being connected to the locking assembly, the first elastic member being used to apply a spring force to the locking assembly toward the locked position.

[0012] Based on the above features, the locking component is easy to switch between the locked and unlocked positions, and the button and the first elastic element are both located inside the backrest. The headrest structure is still relatively simple, the headrest is highly comfortable, and the various parts are not easily damaged.

[0013] Furthermore, the seat assembly also includes a base disposed within the backrest, the base having a guide groove; the locking assembly also includes a connecting rod movably disposed within the guide groove in a left-right direction, one end of the connecting rod being connected to the button, and the other end of the connecting rod being used to cooperate with the transmission assembly.

[0014] Based on the above characteristics, the guide groove can limit the direction of movement and stroke of the connecting rod, improve the accuracy of the locking assembly's movement within the backrest, and facilitate the positioning of the locking assembly on the transmission assembly.

[0015] Furthermore, the connecting rod is provided with a receiving groove, and the button is movably disposed in the receiving groove; the seat assembly also includes a second elastic member, which is disposed in the receiving groove and abuts against the button and the connecting rod.

[0016] Based on the above characteristics, when the button is pressed, the button can move within the receiving groove, the second elastic element is compressed, and the deformation of the second elastic element can absorb some of the pressure, preventing the connecting rod and the first elastic element from being damaged due to excessive force, and extending the service life of the connecting rod and the first elastic element.

[0017] Furthermore, the transmission assembly further includes: a first rod, which is parallel to the rack, and the ends of the first rod and the rack are connected to the headrest; a second rod, which is connected between the first rod and the rack, and the second rod is angled to both the first rod and the rack, and the base is provided with a sliding groove, in which the second rod is slidably disposed.

[0018] Based on the above features, there are more connection points between the transmission assembly and the headrest, increasing the connection strength between them. Furthermore, by providing a groove on the base, the movement of the second rod can be guided, and the travel of the transmission assembly in the forward and backward directions can be limited.

[0019] Furthermore, the backrest includes a first frame and a first outer cover, at least a portion of the first frame is disposed within the first outer cover, the first outer cover has an elongated hole, and an adjustment cylinder is disposed on the upper front side of the first frame, the adjustment cylinder being movable in the front-rear direction within the elongated hole; the headrest includes a second frame and a second outer cover, a portion of the second frame is disposed within the second outer cover, and the bottom of the second frame extends into the adjustment cylinder; wherein, the transmission assembly is connected to the adjustment cylinder.

[0020] Based on the above features, by extending the second frame into the adjusting cylinder, the transmission component can adjust the cylinder to achieve a transmission connection with the second frame, and the first outer cover is provided with an elongated hole, so that the adjusting cylinder can move in the front-back direction within the elongated hole, thus avoiding damage to the first outer cover when adjusting the position of the headrest in the front-back direction.

[0021] Furthermore, the first frame is provided with a perforation, and the transmission component is movably inserted through the perforation in the front-back direction.

[0022] Based on the above features, on the one hand, interference between the transmission component and the first frame can be avoided, so that the transmission component can move in the front-back direction. On the other hand, the first frame can limit and support the transmission component, prevent the transmission component from swaying in the backrest, and ensure the movement stability of the transmission component.

[0023] A vehicle comprising the aforementioned seat assembly.

[0024] Based on the above features, the vehicle of this utility model embodiment, utilizing the aforementioned seat assembly, can improve riding comfort, reduce the probability of damage to the seat assembly, and extend the service life of the seat assembly. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of the seat assembly in the embodiments of this utility model.

[0027] Figure 2 This is the second structural schematic diagram of the seat assembly in this utility model embodiment.

[0028] Figure 3 This is the third structural schematic diagram of the seat assembly in this utility model embodiment.

[0029] Figure 4 This is one of the connection diagrams of the transmission component, locking component, brake disc, button, first elastic element and base in the embodiments of this utility model.

[0030] Figure 5 This is the second schematic diagram showing the connection between the transmission component, locking component, brake disc, button, first elastic element, and base in this embodiment of the present invention.

[0031] Figure 6This is a schematic diagram of the connection between the brake disc and the gear in an embodiment of this utility model.

[0032] Figure 7 This is a schematic diagram showing the connection between the button and the second elastic element in an embodiment of this utility model.

[0033] Figure 8 This is a schematic diagram of the base structure in an embodiment of this utility model.

[0034] Figure 9 This is a schematic diagram of the locking component in an embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram of the structure of the first skeleton in an embodiment of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Seat assembly;

[0038] 100. Backrest; 110. First frame; 111. Perforation; 120. First outer cover; 130. Adjustment cylinder;

[0039] 200. Headrest; 210. Second frame; 220. Second outer covering;

[0040] 300. Transmission assembly; 310. Rack; 320. First link; 330. Second link;

[0041] 400. Locking assembly; 410. Protrusion; 420. Connecting rod; 421. Receiving groove; 422. Rod body; 423. Fixing part; 424. Fixing shaft; 425. Elongated hole; 426. Receiving part; 430. Threaded fastener;

[0042] 500. Gear;

[0043] 600. Brake disc; 610. Card slot;

[0044] 700, Button; 710, Fixing rod; 720, Second elastic element;

[0045] 800. First elastic element;

[0046] 900, base; 910, guide groove; 920, slide groove; 930, base; 940, support plate; 950, suspension plate. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0049] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0050] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.

[0051] This utility model embodiment proposes a seat assembly 1, which includes a backrest 100, a headrest 200, a transmission assembly 300, and a locking assembly 400.

[0052] The headrest 200 is movably disposed above the backrest 100 at least in the front-back direction. A transmission assembly 300 is connected between the backrest 100 and the headrest 200, and is slidably disposed within the backrest 100 in the front-back direction. The transmission assembly 300 is connected to the headrest 200. A locking assembly 400 is disposed within the backrest 100 and has a locked position and an unlocked position. When the locking assembly 400 is in the locked position, it fixes the relative position between the transmission assembly 300 and the backrest 100. When the locking assembly 400 is in the unlocked position, it is separated from the transmission assembly 300.

[0053] For example, the travel of the headrest 200 in the front-to-back direction can be no more than 15mm. The locking component 400 can be switched between the locked and unlocked positions manually or automatically. The headrest 200 can be moved in the front-to-back direction manually or automatically. The position of the headrest 200 in the vertical direction can also be adjusted.

[0054] In this embodiment of the present invention, when the position of the headrest 200 in the fore-and-aft direction needs to be adjusted, the locking component 400 is first switched to the unlocked position, and then the headrest 200 can be adjusted to a position that meets the passenger's needs. The transmission component 300 then moves relative to the backrest 100. It should be noted that the way the transmission component 300 moves relative to the backrest 100 can include at least one of linear movement and rotation. Finally, the locking component 400 is switched to the locked position, locking the transmission component 300 and the backrest 100 to the current position. At this time, the relative position of the headrest 200 and the backrest 100 remains unchanged, and the headrest 200 remains in a position that meets the passenger's needs.

[0055] Compared to placing the transmission assembly 300 and locking assembly 400 inside the headrest 200, this embodiment of the invention places the transmission assembly 300 and locking assembly 400 inside the backrest 100. This simplifies the structure of the headrest 200, preventing contact between the transmission assembly 300 or locking assembly 400 and the passenger's head, thus improving the comfort of the headrest 200. Furthermore, the backrest 100 has a larger internal space, providing more room for the movement of the transmission assembly 300 and locking assembly 400, which helps to buffer external kinetic energy impacts, reduces the probability of damage to the transmission assembly 300 and locking assembly 400, and extends their service life.

[0056] Furthermore, such as Figure 2 and Figure 3 As shown, the transmission assembly 300 includes a rack 310, and the seat assembly 1 also includes a gear 500 disposed in the backrest 100. The rack 310 and the gear 500 mesh. When the locking assembly 400 is in the locked position, it prevents the gear 500 from rotating. When the locking assembly 400 is in the unlocked position, it separates from the gear 500.

[0057] In this way, on the one hand, when the locking component 400 prevents the gear 500 from rotating, the gear 500 also prevents the rack 310 from moving, thereby limiting the transmission component 300 to the current position and limiting the headrest 200 to the current position; on the other hand, when the locking component 400 separates from the gear 500, the rack 310 can move with the headrest 200, and the gear 500 rotates accordingly. The locking component 400 switches to the locked position again, the gear 500 stops rotating, and the rack 310 and the headrest 200 are fixed in the current position. The headrest 200 can be fixed in almost any position within its stroke, realizing stepless adjustment of the position.

[0058] At the same time, the engagement of the rack 310 and the gear 500 also has the advantage of being able to bear a large load, preventing the transmission component 300 from being damaged when the user leans against the headrest 200.

[0059] Furthermore, such as Figures 4-6 As shown, the seat assembly 1 also includes a brake disc 600, which is coaxially arranged with the gear 500. The outer peripheral surface of the brake disc 600 is provided with a plurality of slots 610, which are arranged along the circumference of the brake disc 600. The locking assembly 400 includes a protrusion 410. When the locking assembly 400 is in the locked position, the protrusion 410 is inserted into at least one slot 610. When the locking assembly 400 is in the unlocked position, the protrusion 410 is disengaged from the slot 610.

[0060] In other words, the brake disc 600 and the gear 500 can rotate synchronously. The brake disc 600 and the gear 500 can be integrally formed, or one of the brake disc 600 and the gear 500 can have a rotating shaft, and the other has a rotating hole. The rotating shaft is inserted into the rotating hole. One of the outer circumferential surface of the rotating shaft and the inner circumferential surface of the rotating hole has a locating key, and the other has a keyway. The locating key is located within the keyway, so that the brake disc 600 and the gear 500 rotate synchronously. The tooth pitch of the gear 500 and the dimensions of the slot 610 in the circumferential direction of the brake disc 600 can be the same or different.

[0061] Therefore, when the brake disc 600 is fixed, the gear 500 does not rotate; when the brake disc 600 is not fixed, the gear 500 can rotate. In this way, the locking assembly 400 indirectly limits the position of the gear 500 by limiting the position of the brake disc 600. The locking assembly 400 does not need to directly contact the gear 500, which reduces the stress on the gear 500, lowers the risk of damage, and extends its service life. Furthermore, the engagement of the gear 500 with the rack 310 and the engagement of the brake disc 600 with the locking assembly 400 reduces the impact of the movement of the locking assembly 400 on the position of the gear 500, thus improving the positioning reliability of the headrest 200.

[0062] Those skilled in the art will understand that the more slots 610 there are, the more adjustable positions the headrest 200 can have. Those skilled in the art can design the specific number of slots 610 according to actual needs.

[0063] In some embodiments, such as Figures 1-4 As shown, the seat assembly 1 also includes a button 700 and a first elastic element 800.

[0064] Button 700 protrudes from backrest 100 and is connected to locking component 400. Pressing button 700 drives locking component 400 to move from locked position to unlocked position. First elastic element 800 is located inside backrest 100 and is connected to locking component 400. First elastic element 800 is used to apply elastic force to locking component 400 toward the locked position.

[0065] When the locking assembly 400 is in the locked position, the first elastic element 800 is also in a compressed state, and the first elastic element 800 always has elastic force. Therefore, when the button 700 is not subjected to external force, and under the elastic force of the first elastic element 800, the locking assembly 400 can always remain in the locked position. The first elastic element 800 can be a spring or other elastic structure.

[0066] The user can press button 700 to move the locking component 400 from the locked position to the unlocked position. The compression of the first elastic element 800 increases. At this time, the user can adjust the position of the headrest 200 in the front-back direction. After the position of the headrest 200 is adjusted to the correct position, the user stops pressing button 700. The elastic force of the first elastic element 800 acts on the locking component 400, pushing the locking component 400 back to the locked position to fix the position of the brake disc 600, gear 500, rack 310 and headrest 200.

[0067] In this way, the locking component 400 can switch between the locked and unlocked positions in a simple manner, and the button 700 and the first elastic element 800 are both located inside the backrest 100. The structure of the headrest 200 is still relatively simple, the headrest 200 is highly comfortable, and the various parts are not easily damaged.

[0068] Of course, the position of the locking component 400 can also be adjusted without using the button 700 and the first elastic element 800, or it can be adjusted electronically, for example, by using a linear motor. The user can control the locking component 400 to move between the locked position and the unlocked position by touching the screen.

[0069] Furthermore, such as Figures 7-9 As shown, the seat assembly 1 also includes a base 900, which is disposed within the backrest 100 and has a guide groove 910. The locking assembly 400 also includes a connecting rod 420, which is movably disposed within the guide groove 910 in a left-right direction. One end of the connecting rod 420 is connected to the button 700, and the other end is used to engage with the transmission assembly 300. The gear 500 and the brake disc 600 are rotatably mounted on the base 900.

[0070] The protrusion 410 is connected to the end of the connecting rod 420 away from the button 700. The protrusion 410 is located on the side of the brake disc 600 facing away from the button 700. The connecting rod 420 may be provided with an elongated hole 425. The seat assembly 1 also includes a threaded fastener 430, which can be a bolt or a screw. The threaded fastener 430 passes through the elongated hole 425 and is fixed to the base 900. When the connecting rod 420 moves in the guide groove 910, the threaded fastener 430 moves in the elongated hole 425. The threaded fastener 430 can fix the relative position between the connecting rod 420 and the base 900 and prevent the connecting rod 420 from detaching from the base 900.

[0071] By setting the base 900, the relative positions between the connecting rod 420, the gear 500 and the brake disc 600 can be fixed, and the guide groove 910 can limit the moving direction and stroke of the connecting rod 420, improve the moving accuracy of the locking assembly 400 within the backrest 100, and facilitate the positioning of the locking assembly 400 on the transmission assembly 300.

[0072] Furthermore, such as Figures 7-9 As shown, the connecting rod 420 has a receiving groove 421, and the button 700 is movably disposed within the receiving groove 421. The seat assembly 1 also includes a second elastic element 720, which is disposed within the receiving groove 421 and abuts against the button 700 and the connecting rod 420. When the button 700 is not pressed, the second elastic element 720 is also in a compressed state, and the second elastic element 720 always possesses elastic force. Therefore, under the elastic force of the second elastic element 720, the button 700 remains in the popped-out position. The second elastic element 720 can be a spring or other elastic structure.

[0073] For example, the button 700 may be connected to a fixing rod 710, which passes through the groove wall of the receiving groove 421 and abuts against the outer surface of the connecting rod 420, and the second elastic member 720 is sleeved on the fixing rod 710.

[0074] Additionally, the connecting rod 420 may include a receiving portion 426, a rod body 422, a fixing portion 423, and a fixing shaft 424. One end of the rod body 422 is connected to the receiving portion 426, which has a receiving groove 421. The other end of the rod body 422 is connected to a protrusion 410, which is located on the side of the rod body 422 facing away from the base 900. The fixing portion 423 is connected to the side of the rod body 422 and has an elongated hole 425. The fixing shaft 424 is connected to the fixing portion 423. The first elastic element 800 is a spring, which is sleeved on the fixing shaft 424 and abuts against the inner wall of the fixing portion 423 and the guide groove 910.

[0075] In this way, when button 700 is pressed, button 700 can move within receiving groove 421, the second elastic element 720 is compressed, and the deformation of the second elastic element 720 can absorb some of the pressure, preventing the connecting rod 420 and the first elastic element 800 from being damaged due to excessive force, and extending the service life of the connecting rod 420 and the first elastic element 800.

[0076] In some embodiments, such as Figures 2-3 As shown, the transmission assembly 300 also includes a first rod 320 and a second rod 330. The first rod 320 and the rack 310 are parallel. The ends of the first rod 320 and the rack 310 are connected to the headrest 200. The second rod 330 is connected between the first rod 320 and the rack 310. The second rod 330 is set at an angle to the first rod 320 and the rack 310. The base 900 is provided with a groove 920. The second rod 330 can be slidably disposed in the groove 920 in the front-back direction.

[0077] For example, both the first rod 320 and the gear 500 can be set perpendicular to the second rod 330.

[0078] This increases the number of connection points between the transmission assembly 300 and the headrest 200, improving the connection strength between them, reducing the relative displacement and the probability of separation, and making the connection between them more stable.

[0079] In addition, by providing a groove 920 on the base 900, the movement of the second rod 330 can be guided, and the travel of the transmission assembly 300 in the front-back direction can be limited, thereby achieving reliable displacement of the transmission assembly 300 in the front-back direction, avoiding excessive displacement of the headrest 200 in the front-back direction, reducing the probability of damage to the seat assembly 1, and extending the service life of the seat assembly 1.

[0080] The base 900 may include a base 930, a support plate 940, and a suspension plate 950. The base 930 is provided with a guide groove 910. The support plate 940 is connected to the side of the base 930 that is provided with the guide groove 910. The support plate 940 is provided with a sliding groove 920. There may be multiple support plates 940, which are spaced apart in the left-right direction. The suspension plate 950 is connected to the support plate 940 that is closest to the guide groove 910. The gear 500 and the brake disc 600 are rotatably mounted on the suspension plate 950. The brake disc 600 is closer to the base 930 than the gear 500.

[0081] In some embodiments, such as Figures 1-3As shown, the backrest 100 includes a first frame 110 and a first outer cover 120. At least a portion of the first frame 110 is disposed within the first outer cover 120. The first outer cover 120 has an elongated hole. An adjusting cylinder 130 is disposed on the upper front side of the first frame 110. The adjusting cylinder 130 is movable in the front-back direction within the elongated hole. The headrest 200 includes a second frame 210 and a second outer cover 220. A portion of the second frame 210 is disposed within the second outer cover 220, and the bottom of the second frame 210 extends into the adjusting cylinder 130. A transmission assembly 300 is connected to the adjusting cylinder 130.

[0082] The first outer cover 120 and the second outer cover 220 can be made of foam. The arrangement of the first outer cover 120 and the second outer cover 220 can improve the comfort of the seat assembly 1. The first frame 110, the second frame 210 and the adjusting cylinder 130 can be made of metal, alloy or hard plastic. The arrangement of the first frame 110 and the second frame 210 can support the shape of the backrest 100 and the headrest 200, thereby providing reliable support for the passenger's back and head.

[0083] The height of the headrest 200 can be adjusted by changing the relative position between the adjusting cylinder 130 and the second frame 210.

[0084] By extending the second frame 210 into the adjusting cylinder 130, the transmission assembly 300, the adjusting cylinder 130, and the second frame 210 can be connected. Furthermore, the first outer cover 120 is provided with an elongated hole, allowing the second frame 210 to move in the front-back direction within the elongated hole, thus preventing damage to the first outer cover 120 when adjusting the position of the headrest 200 in the front-back direction.

[0085] Furthermore, such as Figure 10 As shown, the first frame 110 has a through hole 111, through which the transmission component 300 is movably inserted in the front-back direction. On the one hand, this avoids interference between the transmission component 300 and the first frame 110, allowing the transmission component 300 to move in the front-back direction. On the other hand, the first frame 110 provides limiting support for the transmission component 300, preventing it from swaying within the backrest 100 and ensuring the stability of its movement.

[0086] This application also provides a vehicle, which, according to an embodiment of this application, includes the aforementioned seat assembly 1. The vehicle can be a vehicle, a low-altitude aircraft, or other passenger or cargo-carrying device.

[0087] The vehicle of this embodiment, by utilizing the aforementioned seat assembly 1, can improve riding comfort, reduce the probability of damage to the seat assembly 1, and extend the service life of the seat assembly 1.

[0088] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

[0089] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A seat assembly, characterized in that, include: Backrest (100); A headrest (200) is movably disposed above the backrest (100) at least in the front-back direction; A transmission assembly (300) is connected between the backrest (100) and the headrest (200). The transmission assembly (300) is slidably disposed in the backrest (100) in the front-back direction and is connected to the headrest (200). A locking component (400) is disposed within the backrest (100). The locking component (400) has a locked position and an unlocked position. When the locking component (400) is in the locked position, it fixes the relative position between the transmission component (300) and the backrest (100). When the locking component (400) is in the unlocked position, it is separated from the transmission component (300).

2. The seat assembly according to claim 1, characterized in that, The transmission assembly (300) includes a rack (310), and the seat assembly (1) further includes a gear (500) disposed in the backrest (100). The rack (310) and the gear (500) mesh. When the locking assembly (400) is in the locked position, it prevents the gear (500) from rotating. When the locking assembly (400) is in the unlocked position, it disengages from the gear (500).

3. The seat assembly according to claim 2, characterized in that, The seat assembly (1) further includes a brake disc (600), which is coaxially arranged with the gear (500). The outer peripheral surface of the brake disc (600) is provided with a plurality of slots (610). The locking assembly (400) includes a protrusion (410). When the locking assembly (400) is in the locked position, the protrusion (410) is inserted into at least one of the slots (610). When the locking assembly (400) is in the unlocked position, the protrusion (410) is disengaged from the slot (610).

4. The seat assembly according to claim 2, characterized in that, The seat assembly (1) also includes: A button (700) is exposed from the backrest (100), the button (700) is connected to the locking component (400), and pressing the button (700) drives the locking component (400) to move from the locked position to the unlocked position; A first elastic element (800) is disposed within the backrest (100) and connected to the locking assembly (400). The first elastic element (800) is used to apply a spring force to the locking assembly (400) toward the locking position.

5. The seat assembly according to claim 4, characterized in that, The seat assembly (1) further includes a base (900) disposed within the backrest (100), and the base (900) is provided with a guide groove (910); The locking assembly (400) further includes a connecting rod (420), which is movably disposed in the guide groove (910) in the left-right direction. One end of the connecting rod (420) is connected to the button (700), and the other end of the connecting rod (420) is used to cooperate with the transmission assembly (300).

6. The seat assembly according to claim 5, characterized in that, The connecting rod (420) is provided with a receiving groove (421), and the button (700) is movably disposed in the receiving groove (421); The seat assembly (1) further includes a second elastic element (720), which is disposed in the receiving groove (421) and abuts against the button (700) and the connecting rod (420).

7. The seat assembly according to claim 5, characterized in that, The transmission assembly (300) also includes: The first rod (320) is parallel to the rack (310), and the ends of the first rod (320) and the rack (310) are connected to the headrest (200). The second rod (330) is connected between the first rod (320) and the rack (310). The second rod (330) is angled to both the first rod (320) and the rack (310). The base (900) is provided with a groove (920). The second rod (330) is slidably disposed in the groove (920) in the front-back direction.

8. The seat assembly according to any one of claims 1 to 3, characterized in that, The backrest (100) includes a first frame (110) and a first outer cover (120). At least a portion of the first frame (110) is disposed within the first outer cover (120). The first outer cover (120) is provided with an elongated hole. An adjusting cylinder (130) is provided on the upper front side of the first frame (110). The adjusting cylinder (130) is movable in the front-back direction within the elongated hole. The headrest (200) includes a second frame (210) and a second outer cover (220), a portion of the second frame (210) is disposed inside the second outer cover (220), and the bottom of the second frame (210) extends into the adjusting cylinder (130); The transmission assembly (300) is connected to the regulating cylinder (130).

9. The seat assembly according to claim 8, characterized in that, The first frame (110) is provided with a through hole (111), and the transmission component (300) is movably inserted through the through hole (111) in the front-back direction.

10. A vehicle, characterized in that, Includes the seat assembly (1) as described in any one of claims 1-9.

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