Adjustable headrest, seat and vehicle

Abstract

The utility model provides an adjustable headrest, a seat and a vehicle. The headrest comprises a headrest mounting frame, a headrest frame and a headrest adjusting mechanism. The lower end of the headrest mounting frame is connected to the backrest. The headrest frame is hinged to the headrest mounting frame around a first rotating shaft extending in the transverse direction. The headrest adjusting mechanism comprises an arc rack, a gear and a first driving device. The arc rack is fixedly connected to the upper end of the headrest mounting frame, and the first rotating shaft and the arc rack are coaxial. The gear is rotationally connected to the headrest frame and connected with the arc rack in a meshed mode. The first driving device is fixedly connected to the headrest frame and is configured to drive the gear to rotate. According to the headrest provided by the utility model, the headrest frame can be rotated downwards, so that the headrest supporting surface can be flush with the backrest supporting surface, and the effect of improving the comfort of a lying posture of a user is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, in particular to an adjustable headrest, a seat and a vehicle. Background Art

[0002] With the rapid growth of the number of cars in use, users have higher and higher requirements for car seats. Users not only need car seats to be comfortable to "sit", but also expect car seats to be comfortable to "lie". In the prior art, the headrest of a car seat is usually slightly tilted forward to support the user's head, and the headrest can only be adjusted up and down to meet the riding experience of users of different heights. However, the existing headrest cannot adjust the pitch angle. After the car seat is laid down, the headrest and the backrest will form a certain upward tilt angle, resulting in the user's head not being able to lie completely flat, affecting the user's experience. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide an adjustable headrest, seat and vehicle that overcome the above problems or at least partially solve the above problems, and can solve the problem that the headrest cannot adjust the pitch angle.

[0004] Specifically, the utility model provides the following technical solutions:

[0005] An adjustable headrest is provided at the upper end of a seat backrest, and comprises a headrest mounting frame, a headrest frame and a headrest adjustment mechanism. The lower end of the headrest mounting frame is connected to the backrest. The headrest frame is hinged to the headrest mounting frame around a first rotating shaft extending in a transverse direction.

[0006] The headrest adjustment mechanism includes an arc rack, a gear and a first driving device. The arc rack is fixedly connected to the upper end of the headrest mounting frame, and the first rotating shaft is coaxial with the arc rack. The gear is rotationally connected to the headrest frame and meshed with the arc rack. The first driving device is fixedly connected to the headrest frame, and the first driving device is configured to drive the gear to rotate.

[0007] Optionally, the headrest mounting frame includes two mounting plates spaced apart in a transverse direction, and the mounting plates are both perpendicular to the first rotating shaft. The arc rack is fixedly connected to an upper edge of one of the mounting plates.

[0008] Optionally, the headrest mounting frame includes two mounting plates spaced apart in a transverse direction, and the mounting plates are both perpendicular to the first rotating shaft. The arc rack is formed at an upper end of one of the mounting plates.

[0009] Optionally, the headrest frame includes a side trim panel, the side trim panel is perpendicular to the first rotation axis, and the side trim panel is arranged at intervals along the lateral direction on the outer sides of the two mounting plates.

[0010] The first driving device is fixedly connected to a side of the side trim panel away from the two mounting plates.

[0011] Optionally, the first driving device is a motor, the gear is coaxially connected to the output shaft of the motor, and the gear is located on a side of the side trim panel close to the two mounting plates.

[0012] The headrest adjustment mechanism further includes a fixing bracket, the fixing bracket is formed with a leg and a stop plate, the leg is fixedly mounted on the side of the side trim having the gear by a fastener, and a limiting hole is arranged on the stop plate, so that the output shaft passes through the gear and then passes through the limiting hole, and the gear is located between the side trim and the stop plate.

[0013] Optionally, the mounting plate connected to the motor is provided with an avoidance groove extending along the length direction of the arc rack. The legs include a first leg and a second leg.

[0014] The first leg is located on a side of the arc rack away from the first rotating shaft, and a fastener passes through the housing of the motor, the side trim, and the first leg in sequence to fix the motor, the side trim, and the first leg together.

[0015] The second leg is located on the side of the arc rack close to the first rotating shaft, and the fastener passes through the housing of the motor, the side trim, the avoidance groove and the second leg in sequence to fix the motor, the side trim and the second leg.

[0016] Optionally, the side trim plate forms an annular flange facing away from the two mounting plates.

[0017] The headrest mounting frame also includes a limiting rod extending radially along the first rotating shaft, and the limiting rod is located in two opposite flanges of the annular flange to stop the flange from the front and rear sides respectively when the headrest frame rotates around the first rotating shaft.

[0018] Optionally, the distance between the two mounting plates is greater than or equal to 130 mm.

[0019] Optionally, there are two side trim panels, each of which is located on one side of the outer side of the two mounting plates in the transverse direction, and the distance between the two side trim panels is greater than or equal to 150 mm.

[0020] On the other hand, the utility model provides a seat, which comprises a seat cushion, a backrest and the above-mentioned headrest.

[0021] Optionally, the backrest is rotatably connected to the seat cushion around a second rotating shaft extending in the transverse direction, wherein the second rotating shaft is located at the rear side of the seat cushion and is lower than the upper end of the seat cushion.

[0022] Optionally, the seat cushion includes a seat cushion side panel, the backrest includes a backrest side panel, and the seat further includes a backrest adjustment mechanism, which includes a backrest connecting plate and a second driving device.

[0023] The backrest connecting plate is fixedly connected to the rear end of the seat cushion side plate. An angle adjuster is arranged on the backrest connecting plate.

[0024] The second driving device is fixedly connected to the backrest side plate, and the second driving device is configured to drive the second rotating shaft to rotate, so as to cause the backrest side plate to rotate relative to the backrest connecting plate under the drive of the angle adjuster.

[0025] On the other hand, the utility model provides a vehicle, which includes a vehicle body and the above-mentioned seat.

[0026] The utility model discloses an adjustable headrest, wherein a headrest adjustment mechanism is provided between a headrest mounting frame and a headrest frame, and the headrest adjustment mechanism is provided with an arc rack fixedly connected to the headrest mounting frame, a gear, and a first driving device fixedly connected to the headrest frame. The first driving device drives the gear to move along the arc rack in meshing, thereby driving the headrest frame to rotate relative to the headrest mounting frame around a first transverse rotating shaft, that is, the headrest frame changes its pitch angle relative to the backrest. When the seat is laid down, the headrest frame can be rotated downward so that the headrest support surface can be flush with the backrest support surface, thereby achieving the effect of improving the user's lying comfort.

[0027] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0029] Figure 1 is a schematic structural diagram of a headrest according to an embodiment of the utility model;

[0030] Figure 2 is a schematic structural diagram of a headrest according to an embodiment of the utility model;

[0031] Figure 3 is a schematic structural diagram of a seat according to an embodiment of the utility model;

[0032] Figure 4 It is a schematic partial structural diagram of a seat according to an embodiment of the utility model.

[0033] List of reference numerals:

[0034] 100, headrest; 200, headrest mounting frame; 210, mounting plate; 211, avoidance groove; 220, limit rod; 300, headrest frame; 310, side trim; 311, annular flange; 400, headrest adjustment mechanism; 410, first rotating shaft; 420, arc rack; 430, gear; 440, first driving device; 450, fixing bracket; 451, first leg; 452, second leg; 453, stop plate; 500, backrest; 510, backrest side panel; 600, seat cushion; 610, seat cushion side panel; 700, backrest adjustment mechanism; 710, second rotating shaft; 720, backrest connecting plate; 730, angle adjuster; 740, second driving device. DETAILED DESCRIPTION

[0035] Refer to the following Figures 1 to 4 To describe the adjustable headrest, seat and vehicle of the embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0036] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0037] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0039] Figure 1 is a schematic structural diagram of a headrest according to an embodiment of the utility model, such as Figure 1 As shown, and refer to Figures 2 to 4 The embodiment of the utility model provides an adjustable headrest 100, which is arranged on the upper end of the backrest 500 of the seat. The headrest 100 includes a headrest mounting frame 200, a headrest frame 300 and a headrest adjustment mechanism 400. The lower end of the headrest mounting frame 200 is connected to the backrest 500. The headrest frame 300 is hinged to the headrest mounting frame 200 around a first rotating shaft 410 extending in the transverse direction.

[0040] The headrest adjustment mechanism 400 includes an arc rack 420, a gear 430 and a first driving device 440. The arc rack 420 is fixedly connected to the upper end of the headrest mounting frame 200, and the first rotating shaft 410 is coaxial with the arc rack 420. The gear 430 is rotatably connected to the headrest frame 300 and meshed with the arc rack 420. The first driving device 440 is fixedly connected to the headrest frame 300, and the first driving device 440 is configured to drive the gear 430 to rotate.

[0041] In this embodiment, the headrest frame 300 is disposed inside the headrest 100 and can be fixedly mounted on a headrest support surface for supporting the user's head.

[0042] The lower end of the headrest mounting frame 200 can be fixedly connected to the upper end of the backrest 500, for example, fixedly installed on the upper crossbeam of the backrest frame, so that the headrest 100 is firmly fixed on the backrest 500, and the headrest support surface can provide stable support for the user's head. The lower end of the headrest mounting frame 200 can also be slidably connected to the upper end of the backrest 500, for example, slidably inserted and set on the upper end of the backrest 500 frame along the upper and lower sides. In this way, the height of the headrest 100 can be adjusted according to the height of the user.

[0043] The first rotating shaft 410 is arranged in the transverse direction, and the axis of the arc rack 420 is colinear with the axis of the first rotating shaft 410, that is, the center of the pitch circle of the arc rack 420 is on the axis of the first rotating shaft 410. The gear 430 is meshed and connected with the arc rack 420, that is, the axis of the gear 430 is parallel to the axis of the first rotating shaft 410.

[0044] The first driving device 440 may be a manual driving device or an electric driving device.

[0045] Since the gear 430 is rotatably connected to the headrest frame 300, when the first driving device 440 drives the gear 430 to rotate, the axis of the gear 430 will rotate around the axis of the arc rack 420, that is, the headrest frame 300 will rotate around the first rotating shaft 410, thereby changing the pitch angle of the headrest support surface relative to the backrest 500.

[0046] In actual use, when the seat is in a sitting position, the first driving device 440 can drive the gear 430 to rotate, for example, when rotating clockwise, the headrest frame 300 is forced to rotate forward, so that the headrest support surface is tilted forward relative to the backrest support surface, so as to support the user's head. When the seat is lying down, the first driving device 440 can drive the gear 430 to rotate counterclockwise, so as to cause the headrest frame 300 to rotate backward, so that the angle between the headrest support surface and the backrest support surface becomes larger, until the headrest support surface is flush with the backrest support surface, so that the user's head can lie flat.

[0047] This embodiment does not limit the size of the angle between the headrest support surface and the backrest support surface, and the maximum angle may be 180 degrees or greater than 180 degrees.

[0048] It should be noted that in this embodiment, the tooth top of the arc rack 420 can be arranged upward, and the corresponding gear 430 is located on the upper side of the arc rack 420. The tooth top of the arc rack 420 can also be arranged forward or backward, and the position of the gear 430 can be changed accordingly.

[0049] The adjustable headrest 100 of this embodiment can rotate the headrest frame 300 downward when the seat is laid down, so that the headrest support surface and the backrest support surface can be flush, thereby achieving the effect of improving the user's lying comfort.

[0050] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the headrest mounting frame 200 includes two mounting plates 210 spaced apart in the transverse direction, and the mounting plates 210 are both perpendicular to the first rotating shaft 410. The arc rack 420 is fixedly connected to the upper edge of one mounting plate 210.

[0051] In this embodiment, the two mounting plates 210 are spaced apart in the transverse direction and can be connected to the upper ends of the backrest frame respectively to improve the reliability of the connection with the backrest 500 and the reliability of the support for the headrest frame 300. For example, the two mounting plates 210 can be connected to the upper crossbeam of the backrest frame and arranged symmetrically relative to the transverse center of the upper crossbeam of the backrest frame.

[0052] The arc rack 420 and the mounting plate 210 can be two parts during production. After each is manufactured, the arc rack 420 can be fixedly connected to the upper edge of one mounting plate 210 by welding, fastener connection, etc., for example, fixedly connected to the upper edge of the mounting plate 210 on the left. In this way, the arc rack 420 can be easily processed and manufactured, and the versatility of the arc rack 420 and the mounting plate 210 can be improved.

[0053] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the headrest mounting frame 200 includes two mounting plates 210 spaced apart in the transverse direction, and the mounting plates 210 are both perpendicular to the first rotating shaft 410. The arc rack 420 is formed at the upper end of one mounting plate 210.

[0054] In this embodiment, the arc rack 420 and the mounting plate 210 are integrally formed and manufactured using the same plate material during production, so that the connection strength between the arc rack 420 and the mounting plate 210 can be improved and the shape and position tolerance between the arc rack 420 and the mounting plate 210 can be reduced.

[0055] In order to improve the versatility of the arc rack 420 and the mounting plate 210, the headrest mounting frame 200 can use two identical mounting plates 210, so as to avoid the situation of installing the left and right plates reversely during installation.

[0056] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the headrest frame 300 includes a side trim panel 310 , which is perpendicular to the first rotation axis 410 , and is disposed at intervals on the outer sides of the two mounting plates 210 in the lateral direction.

[0057] The first driving device 440 is fixedly connected to a side of the side trim plate 310 away from the two mounting plates 210 .

[0058] In this embodiment, the first driving device 440 is installed on the side of the side trim 310 away from the two mounting plates 210, that is, installed on the outside of the side trim 310. The first driving device 440 generates vibration and noise when the driving gear 430 is working. The first driving device 440 is arranged on the outside of the side trim 310 so that the first driving device 440 is far away from the user's head, avoiding the vibration and noise of the first driving device 440 from being directly transmitted to the user's head, which can improve the user's experience.

[0059] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the first driving device 440 is a motor, the gear 430 is coaxially connected to the output shaft of the motor, and the gear 430 is located on the side of the side trim 310 close to the two mounting plates 210.

[0060] The headrest adjustment mechanism 400 further includes a fixing bracket 450, which is formed with a leg and a stop plate 453. The leg is fixedly mounted on the side of the side trim 310 with the gear 430 by a fastener. The stop plate 453 is provided with a limiting hole, so that the output shaft passes through the gear 430 and then passes through the limiting hole, and the gear 430 is located between the side trim 310 and the stop plate 453.

[0061] In this embodiment, the motor and the gear 430 are located on two sides of the side trim 310. The side trim 310 may be provided with a plurality of through holes to allow the output shaft of the motor to pass through, and to allow fasteners for installing the motor to pass through.

[0062] The side trim 310 can be made of thin sheet metal, and a fixing bracket 450 is added to further improve the firmness of the installation of the motor and the gear 430. The fixing bracket 450 is located on the side of the side trim 310 with the gear 430, that is, on the inner side of the side trim 310. The legs of the fixing bracket 450 are connected to the side trim 310 by fasteners such as bolt sleeves.

[0063] In this embodiment, a stop plate 453 is provided on the fixed bracket 450. The stop plate 453 is located outside the gear 430 away from the motor, and can stop and limit the gear 430 in the axial direction of the gear 430. A limiting hole is provided at the stop plate 453 corresponding to the motor output shaft to allow the output shaft to pass through, so that the output shaft can be stopped and limited in the radial direction of the output shaft, thereby improving the stability of the meshing transmission between the gear 430 and the arc rack 420.

[0064] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the mounting plate 210 connected to the motor is provided with an avoidance groove 211 extending along the length direction of the arc rack 420. The supporting legs include a first supporting leg 451 and a second supporting leg 452.

[0065] The first leg 451 is located on the side of the arc rack 420 away from the first rotating shaft 410, and the fastener passes through the motor housing, the side trim 310, and the first leg 451 in sequence to fix the motor, the side trim 310 and the first leg 451.

[0066] The second leg 452 is located on the side of the arc rack 420 close to the first rotating shaft 410, and the fastener passes through the motor housing, the side trim 310, the avoidance groove 211 and the second leg 452 in sequence to fix the motor, the side trim 310 and the second leg 452 together.

[0067] In this embodiment, there may be two first legs 451 and one second leg 452. By providing the first leg 451 and the second leg 452 on both sides of the arc rack 420, the fixing effect of the fixing bracket 450 can be further improved, so that the motor and the side trim 310 are firmly connected together to avoid deformation and looseness.

[0068] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the side trim panel 310 forms an annular flange 311 facing away from the two mounting plates 210 .

[0069] The headrest mounting frame 200 further includes a limiting rod 220 extending radially along the first rotating shaft 410 . The limiting rod 220 is located in two opposite flanges of the annular flange 311 to stop the flanges from the front and rear sides respectively when the headrest frame 300 rotates around the first rotating shaft 410 .

[0070] In this embodiment, the annular flange 311 can improve the structural strength of the side trim 310 and provide a firm support for the first drive device 440 and the headrest support surface, and can also protect the first drive device 440 from accidental collision.

[0071] In this embodiment, the limiting rod 220 is fixedly connected to the mounting plate 210 , and when the headrest frame 300 rotates forward and reversely around the first rotation axis 410 to two preset angles, the limiting rod 220 respectively contacts two opposite flanges of the annular flange 311 to achieve rotational limitation of the headrest frame 300 .

[0072] In some embodiments of the headrest 100 of the present invention, as Figure 1-2 As shown, the spacing between the two mounting plates 210 is greater than or equal to 130 mm. In this way, the user's head is placed on the flexible filler between the two mounting plates 210 in the horizontal direction, avoiding the user's head from hitting the mounting plate 210 with greater hardness when contacting the headrest 100 backward or downward.

[0073] In some embodiments of the headrest 100 of the present invention, as Figure 1-2As shown, there are two side trims 310, each located on one side of the outer side of the two mounting plates 210 in the transverse direction. The distance between the two side trims 310 is greater than or equal to 150 mm. In this way, when the user's head is located between the two mounting plates 210 in the transverse direction, the first drive device 440 can be kept away from the user's head to prevent vibration and noise from affecting the user experience.

[0074] In some embodiments of the seat of the present invention, Figure 3 As shown, the seat includes a seat cushion 600, a backrest 500 and a headrest 100 of any one of the above embodiments or a combination of the embodiments.

[0075] In this embodiment, the headrest frame 300 of the headrest 100 of the seat can change the pitch angle, and the headrest support surface can rotate relative to the backrest support surface. When the seat is in a sitting position, the headrest frame 300 rotates forward so that the headrest support surface is tilted forward relative to the backrest support surface to support the user's head. When the seat is lying down, the headrest frame 300 rotates backward so that the angle between the headrest support surface and the backrest support surface becomes larger until the headrest support surface is flush with the backrest 500, so that the user's head can lie flat.

[0076] In some embodiments of the seat of the present invention, Figure 3-4 As shown, the backrest 500 is rotatably connected to the seat cushion 600 around a second rotating shaft 710 extending in the transverse direction. The second rotating shaft 710 is located at the rear side of the seat cushion 600 and is lower than the upper end of the seat cushion 600.

[0077] In this embodiment, the second rotation axis 710 is located at the rear side of the seat cushion 600 and is lower than the upper end of the seat cushion 600. Thus, when the backrest 500 rotates backward around the second rotation axis 710, the backrest support surface can be flush with the seat cushion support surface, so that the user can lie flat. Combined with the adjustable headrest 100, the user can lie flat with the whole body, improving the comfort of the user's lying posture.

[0078] In some embodiments of the seat of the present invention, Figure 3-4 As shown, the seat cushion 600 includes a seat cushion side plate 610. The backrest 500 includes a backrest side plate 510. The seat further includes a backrest adjustment mechanism 700, and the backrest adjustment mechanism 700 includes a backrest connecting plate 720 and a second driving device 740.

[0079] The backrest connecting plate 720 is fixedly connected to the rear end of the cushion side plate 610. The backrest connecting plate 720 is provided with a recliner 730.

[0080] The second driving device 740 is fixedly connected to the backrest side plate 510 . The second driving device 740 is configured to drive the second rotating shaft 710 to rotate, so as to enable the backrest side plate 510 to rotate relative to the backrest connecting plate 720 driven by the recliner 730 .

[0081] In this embodiment, the backrest connecting plate 720 is used to form a hinge between the backrest side plate 510 and the seat cushion side plate 610. The seat cushion side plate 610 can be two spaced apart on the left and right, and the backrest side plate 510 can also be two spaced apart on the left and right. The backrest connecting plate 720 is correspondingly arranged as two spaced apart on the left and right. The recliner 730 is arranged on the backrest connecting plate 720, and the second rotating shaft 710 passes through the backrest connecting plate 720 in the horizontal direction.

[0082] The second driving device 740 may be a motor, which may be fixedly mounted on the inner side of the backrest side plate 510. The second rotating shaft 710 is connected to the recliner 730, and the second driving device 740 drives the second rotating shaft 710 to rotate, and then rotates relative to the backrest connecting plate 720 under the drive of the recliner 730.

[0083] In this embodiment, a backrest connecting plate 720 is provided at the rear end of the seat cushion side plate 610 so that the second rotating shaft 710 is rotated to the rear side of the seat cushion 600 and is lower than the upper end of the seat cushion 600, so that when the backrest 500 rotates backward around the second rotating shaft 710, the backrest support surface is flush with the seat cushion support surface.

[0084] In some embodiments of the seat of the present invention, a seat cushion 600 adjustment mechanism is also provided, and the seat cushion 600 adjustment mechanism is configured to adjust the pitch angle of the seat cushion 600, so that after the seat is laid down, the seat cushion 600 can be adjusted to tilt backward, allowing the user to experience a "zero gravity" lying position.

[0085] In some embodiments of the vehicle of the present utility model, the vehicle includes a vehicle body and a seat in any one of the above embodiments.

[0086] The vehicle may be a traditional fuel vehicle or a new energy vehicle. A passenger space is formed in the vehicle body, and the seat is arranged in the passenger space. When the seat of the vehicle is laid down, the headrest support surface can be flush with the backrest support surface, and / or the backrest support surface can be flush with the seat cushion support surface, so that the user can lie flat, thereby achieving the effect of improving the comfort of the user's lying posture.

[0087] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An adjustable headrest, the headrest being arranged at the upper end of the seat backrest, characterized in that: include: A headrest mounting frame, the lower end of which is connected to the backrest; A headrest frame, the headrest frame being hinged to the headrest mounting frame around a first rotating shaft extending in a transverse direction; A headrest adjustment mechanism, the headrest adjustment mechanism comprising: An arc rack, the arc rack is fixedly connected to the upper end of the headrest mounting frame, and the first rotating shaft is coaxial with the arc rack; A gear, the gear being rotatably connected to the headrest frame and meshingly connected with the arc rack; A first driving device is fixedly connected to the headrest frame, and the first driving device is configured to drive the gear to rotate.

2. The headrest according to claim 1, characterized in that: The headrest mounting frame includes two mounting plates spaced apart in a transverse direction, and the mounting plates are both perpendicular to the first rotating shaft; The arc rack is fixedly connected to an upper edge of the mounting plate; or The arc rack is formed on the upper end of one of the mounting plates.

3. The headrest according to claim 2, characterized in that: The headrest frame comprises a side trim plate, the side trim plate is perpendicular to the first rotating shaft, and the side trim plate is arranged at intervals on the outer sides of the two mounting plates in a transverse direction; The first driving device is fixedly connected to a side of the side trim panel away from the two mounting plates.

4. The headrest according to claim 3, characterized in that: The first driving device is a motor, the gear is coaxially connected to the output shaft of the motor, and the gear is located on a side of the side trim plate close to the two mounting plates; and The headrest adjustment mechanism also includes a fixed bracket, which forms a support leg and a stop plate. The support leg is fixedly installed on the side of the side trim panel with the gear by fasteners; a limiting hole is arranged on the stop plate so that the output shaft passes through the gear and then passes through the limiting hole, and the gear is located between the side trim panel and the stop plate.

5. The headrest according to claim 4, characterized in that: The mounting plate connected to the motor is provided with an avoidance groove extending along the length direction of the arc rack; as well as The legs include: A first leg, the first leg is located on a side of the arc rack away from the first rotating shaft, and a fastener passes through the housing of the motor, the side trim, and the first leg in sequence to fix the motor, the side trim, and the first leg; The second leg is located on the side of the arc rack close to the first rotating shaft, and the fastener passes through the housing of the motor, the side trim, the avoidance groove and the second leg in sequence to fix the motor, the side trim and the second leg.

6. The headrest according to claim 3, characterized in that: The side trim plate forms an annular flange facing away from the two mounting plates; The headrest mounting frame also includes a limiting rod extending radially along the first rotating shaft, and the limiting rod is located in two opposite flanges of the annular flange to stop the flange from the front and rear sides respectively when the headrest frame rotates around the first rotating shaft.

7. The headrest according to claim 3, characterized in that: The distance between the two mounting plates is greater than or equal to 130 mm; There are two side trim panels, each located on one side of the outer side of the two mounting plates along the lateral direction; the spacing between the two side trim panels is greater than or equal to 150 mm.

8. A seat, characterized in that: The utility model comprises a seat cushion, a backrest and a headrest as claimed in any one of claims 1 to 7.

9. The seat according to claim 8, characterized in that The backrest is rotatably connected to the seat cushion around a second rotating shaft extending in the transverse direction; the second rotating shaft is located at the rear side of the seat cushion and is lower than the upper end of the seat cushion.

10. The seat according to claim 9, characterized in that The seat cushion includes a seat cushion side panel; the backrest includes a backrest side panel; and The seat also includes a backrest adjustment mechanism, which includes: A backrest connecting plate, the backrest connecting plate is fixedly connected to the rear end of the seat cushion side plate; a recliner is provided on the backrest connecting plate; A second driving device, wherein the second driving device is fixedly connected to the backrest side plate, and the second driving device is configured to drive the second rotating shaft to rotate, so as to cause the backrest side plate to rotate relative to the backrest connecting plate under the drive of the angle adjuster.

11. A vehicle, characterized in that: The vehicle comprises a vehicle body and a seat as claimed in any one of claims 8 to 10.

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