Headrest adjusting device, headrest and seat

Abstract

The invention discloses a headrest adjusting device, a headrest and a seat, the headrest adjusting device (1000) comprises a base frame (1100), an adjustable support (1200) and a driving unit (1300), the adjustable support (1200) is pivoted to the base frame (1100) and can rotate around the vertical direction relative to the base frame (1100), the driving unit (1300) comprises a power generation part (1310), and the power generation part (1310) is connected with the adjustable support (1200) and can rotate around the vertical direction relative to the base frame (1100). The power generation component (1310) is connected with the adjustable support (1200) and used for driving the adjustable support (1200) to rotate. According to the headrest adjusting device, the adjustable support can rotate in the vertical direction, the posture of the headrest adjusting device in the using process can be adjusted, and the riding comfort and safety can be improved.

Description

Technical Field

[0001] This application relates to the field of seating technology, specifically to a headrest adjustment device, a headrest, and a seat. Background Technology

[0002] Headrests are commonly found in seats of vehicles such as cars, trains, and ships to support the heads of occupants. In related technologies, headrests are height-adjustable and lateral-rotating, allowing for adjustments to the headrest's height and the angle between the headrest and the seat back. However, these adjustments are relatively conventional and insufficient to meet the more diverse application needs and safe driving requirements of today.

[0003] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this application is to provide a headrest adjustment device, a headrest, and a seat, wherein the headrest adjustment device can realize the vertical rotation of the adjustable bracket, which can adjust the posture of the headrest adjustment device during use, thereby improving riding comfort and safety.

[0005] To solve the above-mentioned technical problems, this application provides a headrest adjustment device, including a base frame, an adjustable bracket, and a drive unit. The adjustable bracket is pivotally connected to the base frame and can rotate relative to the base frame about the vertical direction. The drive unit includes a power generating component, which is connected to the adjustable bracket and is used to drive the adjustable bracket to rotate.

[0006] In the above solution, the headrest adjustment device provided in this application embodiment includes an adjustable bracket and a drive unit. The drive unit can drive the adjustable bracket to rotate around the vertical axis in order to adjust the posture of the headrest during use, thereby better adapting to the user's needs.

[0007] In detail, when the power generation unit drives the adjustable bracket to rotate outward around the vertical direction, resulting in a relatively large angle between the adjustable bracket and the base frame, the headrest adjustment device can be in an extended position. This allows for a relatively large support area in the front-to-back direction, providing better support for the head in different postures. Conversely, when the power generation unit drives the adjustable bracket to rotate inward around the vertical direction, resulting in a relatively small angle between the adjustable bracket and the base frame, the headrest adjustment device can be in a retracted position. The headrest not only provides support for the head in the front-to-back direction through the base frame but also provides lateral support through the adjustable bracket. This significantly improves passenger comfort and provides more effective protection for the head and neck, reducing the likelihood of accidental injuries to these areas during moose tests and sharp turns, thus greatly enhancing vehicle safety.

[0008] Optionally, the drive unit further includes: a displacement output component, which is connected to the power generation component and is used to drive the displacement output component to move up and down; and a transmission assembly, including a first transmission frame, a second transmission frame, and a third transmission frame, wherein the first transmission frame is connected to the displacement output component, one end of the second transmission frame is pivotally connected to the first transmission frame, the other end of the second transmission frame is pivotally connected to the third transmission frame, a pivoting component between the second transmission frame and the third transmission frame is slidably connected laterally to the base frame, and the third transmission frame is connected to the adjustable bracket, which is used to drive the adjustable bracket to rotate.

[0009] Optionally, the third transmission frame includes a first adapter frame portion and a transmission frame portion, the first adapter frame portion and the other end of the second transmission frame are pivotally connected, one end of the transmission frame portion is pivotally connected to the first adapter frame portion, and the other end of the transmission frame portion is pivotally connected to the adjustable bracket.

[0010] Optionally, the adjustable bracket includes a main frame and a connecting frame. The main frame is mounted on the connecting frame, the connecting frame is pivotally connected to the base frame, and the other end of the transmission frame is also pivotally connected to the connecting frame.

[0011] Optionally, the base frame is provided with a transversely extending strip-shaped hole, and an inner liner is provided inside the strip-shaped hole, with the pivoting component inserted into the inner liner.

[0012] Optionally, the power generating component is pivotally connected to the lower end of the base frame via a pivoting connector, and the power generating component is capable of rotating relative to the base frame about the lateral direction.

[0013] Optionally, the headrest adjustment device further includes a headrest tube, and the base frame is fixedly connected to the headrest tube.

[0014] Optionally, the headrest adjustment device further includes a headrest tube fixing bracket and a headrest tube bushing. The headrest tube fixing bracket is used to connect with the seat back, the headrest tube bushing is installed on the headrest tube fixing bracket, and the headrest tube is inserted into the headrest tube bushing.

[0015] This application also provides a headrest, including a headrest body and a headrest adjustment device, wherein the headrest adjustment device is the headrest adjustment device described above, and the headrest body is mounted on the base frame and the adjustable bracket.

[0016] Optionally, the headrest body includes a split main headrest and a secondary headrest, with the main headrest mounted on the base frame and the secondary headrest mounted on the adjustable bracket.

[0017] This application also provides a seat, including a seat body and a headrest. The seat body includes a seat back, and the headrest is the headrest described above. The headrest body is installed on the seat back via the headrest adjustment device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the headrest adjustment device provided in the embodiments of this application in the unfolded posture;

[0019] Figure 2 for Figure 1 A structural diagram from another perspective;

[0020] Figure 3 for Figure 2 Exploded view;

[0021] Figure 4 This is a schematic diagram of the headrest adjustment device provided in the embodiments of this application in the stowed posture;

[0022] Figure 5 for Figure 4 A structural diagram from another perspective.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1000 Headrest Adjustment Device; 1100 Base Frame; 1110 Frame Body; 1111 Strip Hole; 1120 Inner Liner; 1130 Mounting Frame; 1140 Second Adapter Frame; 1150 Pivoting Connector; 1200 Adjustable Bracket; 1210 Main Frame; 1220 Connecting Frame; 1221 Main Plate; 1222 Flanged Plate; 1300 Drive Unit; 1310 Power Generation Component; 1311 Power Shaft; 1320 Displacement Output Component; 1330 Transmission Assembly; 1331 First Transmission Frame; 1332 Second Transmission Frame; 1333 Third Transmission Frame; 1333A First Adapter Frame; 1333B Transmission Frame; 1334 Pivoting Component; 1400 Headrest Insert Tube; 1500 Headrest Tube Fixing Frame; 1600 Headrest Tube Bushing;

[0025] 2000 frame upper crossbeam. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this application, the specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0027] In the description of the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "joining" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Pivotal connection" can also be called "rotational connection," specifically referring to a connection between two parts that can rotate relative to each other after connection. A pivoting component can be provided between the two pivotally connected parts, which can specifically be a pin, bolt, etc., without explicit limitation here. "Sliding connection" refers to a connection between two parts that can slide relative to each other after connection.

[0029] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0030] Please refer to Figures 1-5 , Figure 1 This is a schematic diagram of the headrest adjustment device provided in the embodiments of this application in the unfolded posture; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 2 Exploded view; Figure 4 This is a schematic diagram of the headrest adjustment device provided in the embodiments of this application in the stowed posture; Figure 5 for Figure 4 A structural diagram from another perspective.

[0031] This application provides a headrest adjustment device 1000, which can be applied to seats in vehicles such as automobiles, trains, and ships. Specifically, it is used to adjust the headrest body (not shown in the figure) of the seat in order to adjust the posture of the headrest body during specific applications, thereby better meeting diverse application needs and safe driving requirements.

[0032] For ease of explanation, the following embodiments of this application mainly use vehicles as examples of transportation vehicles. For example, a vehicle may be a conventional fuel-powered vehicle equipped only with an engine, or a pure electric vehicle equipped only with an electric motor, or a hybrid vehicle equipped with both an engine and an electric motor, etc. In other words, the embodiments of this application do not limit the specific type of vehicle.

[0033] In related technologies, headrests installed in vehicle seats are only used to support the head in the fore-and-aft direction, with relatively few support points and relatively poor comfort. Furthermore, headrest adjustments are mainly limited to height adjustment and lateral rotation adjustment (i.e., pitch adjustment) to adjust the headrest's height and the angle between the headrest and the seat back. These adjustment methods are relatively conventional, lacking innovation and failing to meet the more diverse application needs and safe driving requirements of today.

[0034] To address this, this application presents a novel technical solution for a headrest adjustment device 1000 to provide lateral support for the head, enabling the headrest to support more areas of the head and improving passenger comfort. Furthermore, this lateral support provides protection for the head in more directions, particularly enhancing safety during moose tests or sharp turns.

[0035] Specifically, such as Figures 1-5 As shown, the headrest adjustment device 1000 includes a base frame 1100, an adjustable bracket 1200, and a drive unit 1300.

[0036] The base frame 1100 is the basic structure of the headrest adjustment device 1000. Other components, such as the adjustable bracket 1200 and the drive unit 1300, can be directly or indirectly installed on the base frame 1100 so as to achieve integrated assembly through the base frame 1100. This can improve the integration and structural compactness of the headrest adjustment device 1000 and facilitate modular assembly and disassembly of the headrest adjustment device 1000.

[0037] The adjustable bracket 1200 is pivotally connected to the base frame 1100 and is capable of rotating about the vertical direction relative to the base frame 1100. The drive unit 1300 includes a power generating component 1310, which can be mounted on the base frame 1100 and connected to the adjustable bracket 1200 to drive the adjustable bracket 1200 to rotate.

[0038] Using the above solution, the headrest adjustment device 1000 provided in this application embodiment includes an adjustable bracket 1200 and a drive unit 1300. The drive unit 1300 can drive the adjustable bracket 1200 to rotate vertically so as to adjust the posture of the headrest during use, thereby better adapting to the user's needs.

[0039] In detail, when the vehicle is moving forward or backward normally, the power generation unit 1310 can drive the adjustable bracket 1200 to rotate outward around the vertical axis, thereby increasing the angle between the adjustable bracket 1200 and the base frame 1100, for example, rotating to... Figure 1 and Figure 2 In the state shown, both the headrest adjustment device 1000 and the headrest can be in an unfolded position. The headrest has a relatively large support area in the front-to-back direction, which can better support the head of the person in different postures. When the vehicle is in a moose test or a sharp turn, the power generation unit 1310 can drive the adjustable bracket 1200 to rotate inward around the vertical direction, so that the angle between the adjustable bracket 1200 and the base frame 1100 can be reduced, for example, rotated to Figure 4 and Figure 5 In the state shown, both the headrest adjustment device 1000 and the headrest can be in a retracted position. The headrest can provide support for the person's head not only in the front and back direction, but also in the side direction. On the one hand, it can greatly improve the comfort of the person riding, and on the other hand, it can provide more effective protection for the person's head and neck. It can reduce the possibility of accidental injury to the person's head and neck in scenarios such as moose tests and sharp turns of the vehicle, and can also greatly improve the safety performance of the vehicle.

[0040] It should be understood that the above description of the triggering conditions for different postures of the headrest adjustment device 1000 is merely an exemplary description provided in the embodiments of this application, and it cannot be used as a limitation on the implementation scope of the headrest adjustment device 1000 provided in the embodiments of this application. In specific implementation, those skilled in the art can flexibly design the posture switching conditions of the headrest adjustment device 1000 according to their own needs. For example, a controller and detection component can be installed inside the vehicle. The controller can be, for example, an Electronic Control Unit (ECU). The detection component can detect the vehicle's operating status and driving speed. When it is detected that the vehicle is in a sharp turning condition (which needs to be determined in combination with the speed threshold and rotation angle threshold set in reality), the controller can issue a control command to the drive unit 1300 to drive the adjustable bracket 1200 of the headrest adjustment device 1000 to adjust to a retracted posture. In other cases, the controller can drive the adjustable bracket 1200 of the headrest adjustment device 1000 to switch to an extended posture through the drive unit 1300. For example, the headrest adjustment device 1000 can also be manually controlled by the occupants of the vehicle. The occupants can selectively operate the headrest adjustment device 1000 according to their own usage requirements to drive the headrest to switch between the extended and retracted positions.

[0041] Furthermore, the embodiments of this application do not limit the specific value of the angle between the adjustable support 1200 and the base frame 1100 in the deployed and retracted postures. In practical applications, those skilled in the art can select the appropriate value according to specific needs, as long as it meets the requirements of use. For example, in the deployed posture, the angle between the adjustable support 1200 and the base frame 1100 can be between 150 degrees and 180 degrees; while in the retracted posture, the angle between the adjustable support 1200 and the base frame 1100 can be approximately 90 degrees, for example, between 90 degrees and 110 degrees.

[0042] In this embodiment, "vertical" roughly refers to the Z-axis direction in the vehicle coordinate system. Of course, it can also be at a certain angle to the Z-axis direction; no specific limitation is made here. In short, as long as the adjustable bracket 1200 is rotated so that the headrest can provide lateral support for the person's head, it is acceptable.

[0043] In this embodiment, the adjustable bracket 1200 can be one, in which case the adjustable bracket 1200 can only provide lateral support on one side of the base frame 1100. Alternatively, the adjustable bracket 1200 can be two, in which case the adjustable bracket 1200 can provide lateral support on both sides of the base frame 1100, resulting in a better support effect.

[0044] In addition, in practical applications, those skilled in the art can control the specific dimensions of the adjustable bracket 1200 to avoid affecting the person's field of vision when the adjustable bracket 1200 provides lateral support. In particular, when the headrest adjustment device 1000 provided in this application embodiment is applied to the driver's seat, it can reduce the adverse effects on the driver's normal driving of the vehicle.

[0045] In some implementations, such as Figure 2 , Figure 3 and Figure 5 As shown, the drive unit 1300 may also include a displacement output component 1320 and a transmission assembly 1330.

[0046] The power generation component 1310 can be connected to the displacement output component 1320 to drive the displacement output component 1320 to move up and down. That is, the power generation component 1310 can drive the displacement output component 1320 to perform linear displacement.

[0047] In some solutions, the power generating component 1310 can be a linear drive element that can directly output linear displacement, such as a linear cylinder or a linear hydraulic cylinder. In this case, the power generating component 1310 has a power shaft 1311 in the form of a piston rod, which can directly output linear displacement. The aforementioned displacement output component 1320 can be directly mounted on the power shaft 1311, and the connection structure between the power generating component 1310 and the displacement output component 1320 can be relatively simple.

[0048] In other solutions, the power generating component 1310 can also be a rotary drive element that can directly output rotational displacement, such as a motor or rotary cylinder. In this case, the power generating component 1310 has a power shaft 1311 in the form of a rotating shaft, which can directly output rotational displacement. Since the displacement form directly output by the power shaft 1311 is different from the displacement form required by the displacement output component 1320, a displacement conversion structure needs to be provided between the power shaft 1311 and the displacement output component 1320. This displacement conversion structure can be, for example, a lead screw structure, a gear and rack structure, a pulley structure, or a sprocket structure. Taking the lead screw structure as an example, the power shaft 1311 can be a lead screw with external threads, and the displacement output component 1320 can be a nut with internal threads. The displacement output component 1320 can be threadedly connected to the power shaft 1311. When the power shaft 1311 is driven to rotate, the displacement output component 1320 can output linear displacement.

[0049] The transmission assembly 1330 includes a first transmission frame 1331, a second transmission frame 1332, and a third transmission frame 1333.

[0050] Combination Figure 4The first transmission frame 1331 can be connected to the displacement output component 1320, and the first transmission frame 1331 can be raised and lowered synchronously under the drive of the displacement output component 1320.

[0051] One end of the second transmission frame 1332 can be pivotally connected to the first transmission frame 1331, allowing the second transmission frame 1332 to rotate relative to the first transmission frame 1331. The other end of the second transmission frame 1332 can be pivotally connected to the third transmission frame 1333, allowing the second transmission frame 1332 to also rotate relative to the third transmission frame 1333. Furthermore, the pivoting component 1334 between the second transmission frame 1332 and the third transmission frame 1333 can also be slidably connected to the base frame 1100 laterally, so that while the second transmission frame 1332 rotates relative to the third transmission frame 1333, it can also drive the third transmission frame 1333 to perform linear displacement laterally via the pivoting component 1334. In this embodiment, "lateral" is approximately the Y-axis direction in the vehicle coordinate system; however, it can also be at a certain angle to the Y-axis direction, and is not explicitly limited here.

[0052] The third transmission frame 1333 can also be connected to the adjustable bracket 1200. The third transmission frame 1333 is the drive frame of the adjustable bracket 1200, and is used to drive the adjustable bracket 1200 to rotate vertically.

[0053] In the above scheme, the first transmission frame 1331, the second transmission frame 1332, the third transmission frame 1333, and the adjustable bracket 1200 can be combined to form a multi-link mechanism. The displacement output component 1320 drives the first transmission frame 1331 to rise and fall, and then indirectly drives the adjustable bracket 1200 to rotate through the second transmission frame 1332 and the third transmission frame 1333. This can reliably drive the adjustable bracket 1200 to rotate, and the cost is relatively low.

[0054] In practical applications, the aforementioned power generation component 1310 may be a high-speed motor to improve response speed, thereby enabling faster drive adjustment of the adjustable bracket 1200.

[0055] In some implementations, such as Figure 2 and Figure 3 As shown, the third transmission frame 1333 may include a first adapter frame portion 1333A and a transmission frame portion 1333B.

[0056] The first adapter frame 1333A serves as a transition frame between the transmission frame 1333B and the second transmission frame 1332. The other end of the second transmission frame 1332 may be pivotally connected to the first adapter frame 1333A, allowing the second transmission frame 1332 to rotate relative to the first adapter frame 1333A. The pivot member 1334, slidably connected to the base frame 1100, is used to achieve the pivot connection between the second transmission frame 1332 and the first adapter frame 1333A.

[0057] One end of the transmission frame portion 1333B can be pivotally connected to the first adapter frame portion 1333A, allowing the transmission frame portion 1333B to rotate relative to the first adapter frame portion 1333A. The other end of the transmission frame portion 1333B can be pivotally connected to the adjustable bracket 1200, allowing the transmission frame portion 1333B to rotate relative to the adjustable bracket 1200.

[0058] With this configuration, as the second transmission frame 1332 drives the third transmission frame 1333 to move laterally via the pivot component 1334, the transmission frame portion 1333B can also rotate relative to the first transition frame portion 1333A, and the adjustable bracket 1200 can rotate relative to the transmission frame portion 1333B. Thus, the pivotal connection at both ends of the transmission frame portion 1333B prevents rotational interference when the third transmission frame 1333 drives the adjustable bracket 1200 to rotate, further ensuring smooth rotation of the adjustable bracket 1200.

[0059] Here, the embodiments of this application do not limit the specific structural form of the first adapter section 1333A described above. In practical applications, those skilled in the art can choose according to specific needs, as long as it can meet the requirements of use. For example, see... Figure 3 The first adapter frame 1333A can be roughly L-shaped, including two plate parts arranged at an angle, wherein one plate part can be pivotally connected to the second transmission frame 1332, and the other plate part can be pivotally connected to the transmission frame 1333B.

[0060] It should be understood that in some other implementations of the embodiments of this application, the third transmission frame 1333 may also adopt other structural forms, as long as transmission interference between the third transmission frame 1333 and the adjustable bracket 1200 can be avoided. For example, the third transmission frame 1333 may not include the pivotally connected first adapter frame portion 1333A and transmission frame portion 1333B. In this case, the adjustable bracket 1200 may be provided with a strip hole, and an adapter shaft may be provided at the end of the third transmission frame 1333 away from the second transmission frame 1332. The extension direction of the adapter shaft and the extension direction of the third transmission frame 1333 may form an angle. The adapter shaft may be inserted into the strip hole. Through the cooperation of the adapter shaft and the strip hole, transmission interference between the third transmission frame 1333 and the adjustable bracket 1200 can also be avoided.

[0061] In some implementations, such as Figure 2 and Figure 3 As shown, the adjustable bracket 1200 may include a main frame portion 1210 and a connecting frame portion 1220.

[0062] The main frame 1210 can be mounted on the connecting frame 1220. The specific connection method can be welding, bolting, etc., and is not limited thereto, as long as it meets the relevant requirements for connection reliability. The connecting frame 1220 can be pivotally connected to the base frame 1100, and the other end of the aforementioned transmission frame 1333B can specifically be pivotally connected to the connecting frame 1220. Thus, when the transmission frame 1333B undergoes lateral displacement, the transmission frame 1333B can drive the main frame 1210 to rotate through the connecting frame 1220.

[0063] The adjustable bracket 1200 is configured as a split main body frame 1210 and a connecting frame 1220, so that the size of each component can be relatively small, and the processing and manufacturing of the main body frame 1210 and the connecting frame 1220 can be easily realized.

[0064] like Figure 2 As shown, the connecting frame portion 1220 may include a body plate portion 1221 and a flange plate portion 1222. The flange plate portion 1222 and the body plate portion 1221 may form an angle, such as 90 degrees. The connecting frame portion 1220 may be connected to the body frame portion 1210 via the flange plate portion 1222. Specifically, the connecting frame portion 1220 may be pivotally connected to the base frame 1100 and the transmission frame portion 1333B via the body plate portion 1221.

[0065] It should be understood that in some other implementations of the embodiments of this application, the adjustable bracket 1200 can also be an integrally formed structure. In this case, the connection structure between the aforementioned main frame 1210 and the connecting frame 1220 can be omitted, and the assembly of the headrest adjustment device 1000 provided in the embodiments of this application can be easily realized.

[0066] In some implementations, such as Figure 3 As shown, the base frame 1100 may include the frame body 1110.

[0067] The frame body 1110 may be provided with a transversely extending strip hole 1111. An inner lining 1120 may be provided inside the strip hole 1111. The inner lining 1120 may be made of a flexible material such as plastic or rubber. The pivot component 1334 between the aforementioned second transmission frame 1332 and third transmission frame 1333 may be inserted into the inner lining 1120 and be able to slide along the inner lining 1120 to reduce noise and abnormal sounds during the sliding process, thereby improving product quality.

[0068] Here, the embodiments of this application do not limit the specific molding and installation method of the inner lining 1120. In practical applications, those skilled in the art can choose according to specific needs, as long as it can meet the actual application requirements. For example, the inner lining 1120 can be formed on the inner wall of the strip hole 1111 using a plastic coating process. As another example, the inner lining 1120 can also be processed separately and then installed in the strip hole 1111 through processes such as snap-fit ​​or interference fit.

[0069] The aforementioned adjustable bracket 1200 can be directly pivotally connected to the frame body 1110. For example, a flange or similar device can be provided at a corresponding position on the frame body 1110 to pivotally connect with the adjustable bracket 1200. Alternatively, the base frame 1100 can also include a second adapter frame 1140. The second adapter frame 1140 can be installed on the frame body 1110 by welding, bolting, or other means, and the adjustable bracket 1200 can be pivotally connected to the second adapter frame 1140. The specific structural form of the second adapter frame 1140 can be consistent with the aforementioned first adapter frame 1333A, and will not be described again here.

[0070] In some implementations, such as Figure 3 As shown, the power generation component 1310 may be pivotally connected to the lower end of the base frame 1100 and be able to rotate relative to the base frame 1100 about the lateral direction.

[0071] With this configuration, when the power generating component 1310 outputs linear displacement outward through the displacement output component 1320, the power generating component 1310 itself can also rotate laterally relative to the base frame 1100. This reduces motion interference that may occur when the displacement output component 1320 drives the transmission assembly 1330 for displacement transmission. In other words, by configuring the power generating component 1310 to be pivotally connected to the base frame 1100, the smoothness of the drive unit 1300 during displacement transmission can be improved.

[0072] Detailed explanation, such as Figure 2 As shown, the base frame 1100 may also include a mounting frame 1130, which may be roughly in the shape of a "Z". It can be connected to the frame body 1110 by welding, screw connection, riveting, snap-fit ​​and other processes to achieve the installation and fixation of the mounting frame 1130. The base frame 1100 may also include a pivot connector 1150, and the power generating component 1310 may be pivotally connected to the mounting frame 1130 through the pivot connector 1150 so that the power generating component 1310 can rotate relative to the mounting frame 1130.

[0073] Here, the embodiments of this application do not limit the specific structural form of the pivot connector 1150 described above. In practical applications, those skilled in the art can select according to specific needs, as long as it can meet the technical requirements of pivoting. For example, the pivot connector 1150 can be a pin. Another example is that the pivot connector 1150 can also be a bolt, etc.

[0074] It should be understood that in some other implementations of the embodiments of this application, the pivot position of the power generation unit 1310 is not limited to the lower end of the base frame 1100, and it can also be pivotally connected to other positions of the base frame 1100, as long as the requirements of use can be met. In addition, in some other implementations of the embodiments of this application, the power generation unit 1310 can also be fixedly installed on the base frame 1100, which is also feasible.

[0075] In the above-described implementations, the embodiments of this application all use the example of the power generating component 1310 outputting linear displacement outward through the displacement output component 1320, and then driving the adjustable bracket 1200 to rotate through the transmission component 1330. However, in some other implementations of the embodiments of this application, the power generating component 1310 can also directly output rotational displacement, and then drive the adjustable bracket 1200 to rotate. If necessary, a reduction mechanism such as a gear mechanism can also be provided between the power generating component 1310 and the adjustable bracket 1200 to adjust the transmission ratio between the power generating component 1310 and the adjustable bracket 1200.

[0076] In some implementations, the headrest adjustment device 1000 may also include a headrest insertion tube 1400, and the base frame 1100 may be fixedly connected to the headrest insertion tube 1400 so as to allow for modular assembly and disassembly via the headrest insertion tube 1400. The connection method between the base frame 1100 and the headrest insertion tube 1400 may be, for example, welding or bolting, and is not limited here.

[0077] In some implementations, the headrest adjustment device 1000 may also include a headrest tube fixing bracket 1500 and a headrest tube bushing 1600.

[0078] The headrest tube bracket 1500 is used to connect with the seat back, in combination with... Figure 1 and Figure 4 Specifically, it can be connected to the crossbeam 2000 on the frame of the seat back. The connection method can be welding, snap-fitting, screw connection, riveting, etc. There are no restrictions here, as long as the reliability of the connection and other related requirements can be guaranteed.

[0079] The headrest tube bushing 1600 can be installed on the headrest tube fixing bracket 1500. Specific installation methods include snap-fit ​​and interference fit. The headrest insertion tube 1400 can be inserted into the headrest tube bushing 1600 and can move vertically relative to the headrest tube bushing 1600 to adjust the height of the headrest body. The headrest tube bushing 1600 can also be made of flexible materials such as plastic to reduce noise during the vertical movement of the headrest insertion tube 1400, thereby improving product quality.

[0080] In this implementation, the headrest adjustment device 1000 cannot achieve vertical rotation adjustment of the adjustable support 1200, but it can achieve height adjustment through the headrest insertion tube 1400, which increases the adjustability of the headrest. In addition, the headrest adjustment device 1000 in this embodiment can also integrate a tilt adjustment function. That is, in this embodiment, in addition to achieving vertical rotation adjustment of the adjustable support 1200, the headrest adjustment device 1000 can selectively integrate at least one of height adjustment function and tilt adjustment function.

[0081] This application embodiment also provides a headrest, including a headrest body and a headrest adjustment device 1000. The headrest body can be installed on the headrest adjustment device 1000 so that the posture can be adjusted by the headrest adjustment device 1000.

[0082] The headrest adjustment device 1000 can specifically be the headrest adjustment device 1000 involved in the aforementioned implementations, and the headrest body can be mounted on the base frame 1100 and the adjustable bracket 1200. In this way, when the adjustable bracket 1200 rotates vertically relative to the base frame 1100, the headrest body can present different shapes, which can better meet the requirements of use.

[0083] In this embodiment, the headrest body can be a one-piece structure, which can be integrally fitted onto the base frame 1100 and the adjustable support 1200. Alternatively, the headrest body can also be a split structure, including a main headrest portion and a secondary headrest portion. The main headrest portion can be fitted onto the base frame 1100, while the secondary headrest portion can be fitted onto the adjustable support 1200. In this way, the main headrest portion can better cover the base frame 1100, and the secondary headrest portion can also better cover the adjustable support 1200. Furthermore, the headrest body is less likely to interfere with the rotation of the adjustable support 1200 relative to the base frame 1100, which is more conducive to adjusting the shape of the headrest body.

[0084] This application embodiment also provides a seat, specifically applicable to vehicles such as automobiles, trains, and ships, including a seat body and a headrest. The seat body includes a seat basin and a seat back, the seat back being rotatably connected to the seat basin and capable of rotating relative to the seat basin to achieve angle adjustment of the seat back. The headrest can specifically be the aforementioned headrest, including a headrest body and a headrest adjustment device 1000. The headrest body can be installed on the seat back via the headrest adjustment device 1000 to achieve fixed installation of the headrest on the seat body.

[0085] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A headrest adjustment device, characterized in that, It includes a base frame (1100), an adjustable bracket (1200), and a drive unit (1300). The adjustable bracket (1200) is pivotally connected to the base frame (1100) and is capable of rotating about the vertical direction relative to the base frame (1100). The drive unit (1300) includes a power generating component (1310), which is connected to the adjustable bracket (1200) and is used to drive the adjustable bracket (1200) to rotate.

2. The headrest adjustment device according to claim 1, characterized in that, The drive unit (1300) further includes: The displacement output component (1320) is connected to the power generation component (1310) and the displacement output component (1320) and is used to drive the displacement output component (1320) to move up and down; The transmission assembly (1330) includes a first transmission frame (1331), a second transmission frame (1332), and a third transmission frame (1333). The first transmission frame (1331) is connected to the displacement output component (1320). One end of the second transmission frame (1332) is pivotally connected to the first transmission frame (1331), and the other end of the second transmission frame (1332) is pivotally connected to the third transmission frame (1333). A pivot component (1334) between the second transmission frame (1332) and the third transmission frame (1333) is laterally slidably connected to the base frame (1100). The third transmission frame (1333) is connected to the adjustable bracket (1200), and the third transmission frame (1333) is used to drive the adjustable bracket (1200) to rotate.

3. The headrest adjustment device according to claim 2, characterized in that, The third transmission frame (1333) includes a first adapter frame (1333A) and a transmission frame (1333B). The first adapter frame (1333A) and the other end of the second transmission frame (1332) are pivotally connected. One end of the transmission frame (1333B) is pivotally connected to the first adapter frame (1333A), and the other end of the transmission frame (1333B) is pivotally connected to the adjustable bracket (1200).

4. The headrest adjustment device according to claim 3, characterized in that, The adjustable bracket (1200) includes a main frame (1210) and a connecting frame (1220). The main frame (1210) is mounted on the connecting frame (1220). The connecting frame (1220) is pivotally connected to the base frame (1100), and the other end of the transmission frame (1333B) is also pivotally connected to the connecting frame (1220).

5. The headrest adjustment device according to claim 2, characterized in that, The base frame (1100) is provided with a transversely extending strip hole (1111), and an inner liner (1120) is provided inside the strip hole (1111). The pivoting component (1334) is inserted into the inner liner (1120).

6. The headrest adjustment device according to claim 2, characterized in that, The power generating component (1310) is pivotally connected to the lower end of the base frame (1100) via a pivot connector (1150), and the power generating component (1310) is capable of rotating relative to the base frame (1100) about the lateral direction.

7. The headrest adjustment device according to any one of claims 1-6, characterized in that, The headrest adjustment device (1000) also includes a headrest insertion tube (1400), and the base frame (1100) is fixedly connected to the headrest insertion tube (1400).

8. The headrest adjustment device according to claim 7, characterized in that, The headrest adjustment device (1000) further includes a headrest tube fixing bracket (1500) and a headrest tube bushing (1600). The headrest tube fixing bracket (1500) is used to connect with the seat back. The headrest tube bushing (1600) is installed in the headrest tube fixing bracket (1500). The headrest insertion tube (1400) is inserted into the headrest tube bushing (1600).

9. A headrest, characterized in that, It includes a headrest body and a headrest adjustment device (1000), wherein the headrest adjustment device (1000) is the headrest adjustment device (1000) according to any one of claims 1-8, and the headrest body is mounted on the base frame (1100) and the adjustable bracket (1200).

10. The headrest according to claim 9, characterized in that, The headrest body includes a split main headrest and a secondary headrest. The main headrest is mounted on the base frame (1100), and the secondary headrest is mounted on the adjustable bracket (1200).

11. A type of seat, characterized in that, The seat includes a seat body and a headrest. The seat body includes a seat back. The headrest is the headrest as described in claim 9 or 11. The headrest body is installed on the seat back via the headrest adjustment device (1000).

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