Adjustable headrest and vehicle seat

Abstract

An adjustable headrest and a vehicle seat.The adjustable headrest comprises a headrest body (1000) and an adjusting mechanism (2000), the adjusting mechanism (2000) comprises a first support (2100), a second support (2200), a first guide part (2300), a first driving part (2400), a second guide part (2500), a second driving part (2600) and an elastic clearance eliminating part (2700), the first guide part (2300) comprises a first guide section (2310), and the second guide part (2500) comprises a second guide section (2300). The first support (2100) is assembled on the first guide section (2310) in a sliding mode, the second support (2200) is installed on the second guide component (2500), the second support (2200) is connected with the headrest body (1000), the second guide component (2500) comprises a second guide section (2510), the first support (2100) is assembled on the second guide section (2510) in a sliding mode, and the second support (2200) is installed on the second guide section (2510). The elastic gap eliminating component (2700) is arranged between the first guide section (2310) and the first support (2100) and between the second guide section (2510) and the first support (2100).

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly relates to an adjustable headrest and a vehicle seat. Background Art

[0002] A headrest is an important component of a vehicle seat, which can play a role in supporting the head and relieving fatigue. In the related art, there are some vehicle seats provided with adjustable headrests that can adjust the setting position of the headrest. However, the driving motors of these headrests are often arranged inside the seat backrest, which will, to a certain extent, affect the expansion of functional modules inside the backrest; moreover, the stability of these headrests is generally poor and difficult to meet the requirements of specific use.

[0003] Therefore, how to provide a solution to at least overcome or alleviate some of the above defects is still a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustable headrest and a vehicle seat. Among them, the adjustable headrest has relatively high stability during the adjustment process, is not prone to shaking, and can improve the user experience.

[0005] To solve the above technical problems, the present invention provides an adjustable headrest, including a headrest body and an adjustment mechanism. The adjustment mechanism includes a first support, a second support, a first guiding component, a first driving component, a second guiding component, a second driving component, and an elastic clearance eliminating component. The first guiding component includes a first guiding section extending in the up and down direction. The first support is slidably assembled on the first guiding section. The first driving component is used to drive the first support. The second support is installed on the second guiding component. The second support is connected to the headrest body. The second guiding component includes a second guiding section extending in the front and back direction. The first support is also slidably assembled on the second guiding section. The second driving component is used to drive the second support. The elastic clearance eliminating component is arranged between the first guiding section and the first support, and between the second guiding section and the first support.

[0006] Adopting the above solution, under the action of the second driving component, the second support can displace in the front and back direction, and can drive the headrest body to displace in the front and back direction; under the action of the first driving component, the first support can drive the second support to displace in the up and down direction together, and further can drive the headrest body to displace in the up and down direction. In this way, the adjustable headrest provided by the embodiment of the present invention can realize the displacement of the headrest body in the four directions of up, down, front, and back. That is, the headrest body in the embodiment of the present invention can have four degrees of freedom of adjustment, which can better meet the adjustment requirements for the headrest body, so as to improve the user experience.

[0007] Moreover, an elastic clearance eliminating component is provided in the embodiment of the present invention. The elastic clearance eliminating component is arranged between the first guiding section and the first support, and is also arranged between the second guiding section and the first support. The elastic clearance eliminating component has a certain elastic deformation ability. The elastic clearance eliminating component can fill and reduce the clearance between the first guiding section and the first support, and the clearance between the second guiding section and the first support, so that the first support can be more stable during the up-and-down displacement relative to the first guiding section, and the second guiding section can be more stable during the front-and-back displacement relative to the first support. Furthermore, the possibility of the headrest body shaking during the position adjustment process can be reduced, so as to better meet the usage requirements and improve the user experience.

[0008] Optionally, the first support is provided with a first guiding hole and a second guiding hole. The first guiding section is inserted into the first guiding hole, and the second guiding section is inserted into the second guiding hole. Any one of the first guiding hole and the second guiding hole includes a base hole portion and an enlarged hole portion. The enlarged hole portion is located at a partial area on the outer peripheral side of the base hole portion, and the elastic clearance eliminating component is arranged in the enlarged hole portion.

[0009] Optionally, the number of the first guiding holes inserted and matched with one first guiding section is at least two. Among the first guiding holes, at least two of the enlarged hole portions of the first guiding holes are different in circumferential setting positions; and / or, the number of the second guiding holes inserted and matched with one second guiding section is at least two. Among the second guiding holes, at least two of the enlarged hole portions of the second guiding holes are different in circumferential setting positions.

[0010] Optionally, the elastic clearance eliminating component has a hollow hole.

[0011] Optionally, the elastic clearance eliminating component is provided with a clamping portion, and the elastic clearance eliminating component is clamped and assembled with the first support through the clamping portion; and / or, the first support, the second support, the first guiding section, the first driving component, the second guiding component and the second driving component are all arranged in the headrest body.

[0012] Optionally, the first driving component includes a first driving rotation component and a first lead screw. The first driving rotation component is used to drive the first lead screw to rotate, and the first driving rotation component is installed on the first support. The adjusting mechanism further includes a third support, the third support is installed on the first guiding component, and the first lead screw is in threaded connection with the third support.

[0013] Optionally, the second driving member includes a second rotating member and a second lead screw. The second rotating member is used to drive the second lead screw to rotate. The second rotating member is installed on the second support, and the second lead screw is in threaded connection with the first support.

[0014] Optionally, at least one of the first support and the third support is integrally formed with a threaded hole; alternatively, at least one of the first support and the third support is installed with a threaded member having a threaded hole.

[0015] Optionally, at least one of the first lead screw and the second lead screw is provided with a limiting member.

[0016] The present invention also provides a vehicle seat, including a seat body and a headrest. The headrest is installed on the seat body, and the headrest is the adjustable headrest as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of an adjustable headrest provided by an embodiment of the present invention;

[0018] Figure 2 is Figure 1 a schematic structural view from another perspective;

[0019] Figure 3 is an exploded view of an adjustable headrest provided by an embodiment of the present invention;

[0020] Figure 4 is an exploded view of the adjusting mechanism;

[0021] Figure 5 is a schematic structural view of the first support;

[0022] Figure 6 is a schematic structural view of the elastic backlash eliminating member;

[0023] Figure 7 is a schematic structural view of the adjusting mechanism when the headrest body is in the lowest and rearmost position;

[0024] Figure 8 is Figure 7 a sectional view of...;

[0025] Figure 9 is a schematic structural view of the adjusting mechanism when the headrest body is in the highest and rearmost position;

[0026] Figure 10 is a schematic structural view of the adjusting mechanism when the headrest body is in the lowest and rearmost position;

[0027] Figure 11It is a schematic diagram of the structure of the adjustment mechanism when the headrest body is in the lowest and most forward position.

[0028] Reference numerals:

[0029] 1000-headrest body; 1100-first pillow portion; 1200-second pillow portion;

[0030] 2000-adjustment mechanism; 2100-first support; 2110-first guide hole; 2111-first base hole portion; 2112-first expansion hole portion; 2120-second guide hole; 2121-second base hole portion; 2122-second expansion hole portion; 2130-threaded component; 2200-second support; 2300-first guide component; 2310-first guide section; 2320-installation section; 2330-transfer section; 2400-first drive component; 2410- The first driving component; 2420-the first screw rod; 2421-the first limiting portion; 2430-the connecting frame; 2500-the second guiding component; 2510-the second guiding section; 2520-the reinforcing plate; 2600-the second driving component; 2610-the second driving component; 2620-the second screw rod; 2621-the second limiting portion; 2700-the elastic gap eliminating component; 2710-the main body; 2711-the hollow hole; 2720-the clamping portion; 2800-the third support. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] In the description of the embodiments of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0034] In the embodiment of the present invention, the front-to-back direction refers to the length direction of the vehicle, wherein the direction of the front of the vehicle is the front and the direction of the rear of the vehicle is the rear; the up-down direction refers to the height direction of the vehicle, with the load-bearing surface of the vehicle (such as the ground) as a reference, the direction relatively close to the load-bearing surface is the down direction, and the direction relatively far from the load-bearing surface is the up direction; on the load-bearing surface, the direction perpendicular to the front-to-back direction is the left-right direction.

[0035] In the description of the embodiments of the present invention, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0036] In the description of the embodiments of the present invention, "and / or" is merely an associative relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0037] Please refer to Figures 1-6 , Figure 1 which is a schematic structural view of an adjustable headrest provided by an embodiment of the present invention; Figure 2 is Figure 1 a schematic structural view from another perspective; Figure 3 is an exploded view of an adjustable headrest provided by an embodiment of the present invention; Figure 4 is an exploded view of the adjustment mechanism; Figure 5 is a schematic structural view of the first support; Figure 6 is a schematic structural view of the elastic clearance eliminating component.

[0038] As Figures 1-3 shown, an embodiment of the present invention provides an adjustable headrest, which includes a headrest body 1000 and an adjustment mechanism 2000.

[0039] The headrest body 1000 is the base of the adjustable headrest and is mainly used to realize the function of the headrest. In combination with Figure 3 , the headrest body 1000 may be a split structure, including a first pillow part 1100 and a second pillow part 1200 arranged in the front-rear direction. Among them, the first pillow part 1100 is located at the front side and is used to directly contact the head of the vehicle occupant, while the second pillow part 1200 is located at the rear side. By splitting the headrest body 1000, it is convenient to install and fix the adjustment mechanism 2000 on the headrest body 1000.

[0040] It should be understood that the above-mentioned first occipital part 1100 and second occipital part 1200 can also be arranged in the left-right direction, or the above-mentioned first occipital part 1100 and second occipital part 1200 can also be arranged in the up-down direction. In short, as long as the headrest body 1000 is set as a split structure to facilitate the disassembly and assembly of the adjustment mechanism 2000.

[0041] After the adjustment mechanism 2000 and the headrest body 1000 are installed, the first occipital part 1100 and the second occipital part 1200 can be assembled. The specific assembly process can be, for example, screw connection, snap connection, riveting, etc., which is not limited here as long as it can meet the usage requirements.

[0042] The adjustment mechanism 2000 includes a first support 2100, a second support 2200, a first guiding member 2300, a first driving member 2400, a second guiding member 2500, and a second driving member 2600.

[0043] The first guiding member 2300 includes a first guiding section 2310 extending in the up-down direction. The first support 2100 is slidably assembled on the first guiding section 2310. The first driving member 2400 is used to drive the first support 2100 to drive the first support 2100 to move up and down along the first guiding section 2310. The number of the first guiding sections 2310 can be at least two, and each first guiding section 2310 can be spaced apart in the left-right direction or the front-back direction, etc., to improve the stability of the first support 2100 sliding in the up-down direction.

[0044] The second support 2200 is installed on the second guiding member 2500. The specific installation method can be, for example, riveting, screw connection, snap connection, etc. In short, as long as the installation and fixation of the second support 2200 on the second guiding member 2500 can be achieved. The second support 2200 is also connected to the headrest body 1000. Specifically, the second support 2200 can be connected to at least one of the aforementioned first occipital part 1100 and second occipital part 1200. The specific connection method can be, for example, riveting, screw connection, snap connection, etc. In short, as long as the connection and fixation of the second support 2200 and the headrest body 1000 can be achieved.

[0045] The second guiding member 2500 includes a second guiding section 2510 extending in the front-back direction. The first support 2100 is also slidably assembled on the second guiding section 2510. The number of the second guiding sections 2510 can also be at least two, and each second guiding section 2510 can be spaced apart in the left-right direction or the up-down direction, etc., to improve the stability of the second support 2200 sliding in the front-back direction. Combined Figure 3 and Figure 4, the second guiding member 2500 may further include a reinforcing plate 2520, and the reinforcing plate 2520 may be connected to each second guiding segment 2510 to enhance the overall structural stability of the second guiding member 2500.

[0046] The second driving member 2600 is used to drive the second support 2200 to displace the second support 2200 relative to the first support 2100 in the front - rear direction.

[0047] With the above - mentioned solution, under the action of the second driving member 2600, the second support 2200 can be displaced in the front - rear direction, which can drive the headrest body 1000 to be displaced in the front - rear direction; under the action of the first driving member 2400, the first support 2100 can drive the second support 2200 to be displaced in the up - down direction together, and further drive the headrest body 1000 to be displaced in the up - down direction. In this way, the adjustable headrest provided by the embodiment of the present invention can realize the displacement of the headrest body 1000 in the four directions of up, down, front, and rear. That is to say, the headrest body 1000 in the embodiment of the present invention can have four - direction adjustment degrees of freedom, which can better meet the adjustment requirements for the headrest body 1000 to improve the user experience.

[0048] In the embodiment of the present invention, the first support 2100, the second support 2200, the first guiding segment 2310, the first driving member 2400, the second guiding member 2500, and the second driving member 2600 are all arranged inside the headrest body 1000. In this way, the integrated assembly of the adjustment mechanism 2000 inside the headrest body 1000 can be realized, which can reduce the occupation of the space at other parts of the vehicle seat. For example, it can reduce the occupation of the internal space of the backrest of the vehicle seat, so as to less affect the functional expansion of other parts of the vehicle seat. That is to say, using the adjustable headrest provided by the embodiment of the present invention is more beneficial to expanding the functional diversity of the vehicle seat.

[0049] Furthermore, in the embodiment of the present invention, the adjustment mechanism 2000 further includes an elastic clearance - eliminating member 2700.

[0050] An elastic clearance eliminating component 2700 is arranged between the first guiding section 2310 and the first support 2100, and the elastic clearance eliminating component 2700 is also arranged between the second guiding section 2510 and the first support 2100. It can be seen that the elastic clearance eliminating component 2700 has a certain elastic deformation ability. The elastic clearance eliminating component 2700 can fill and eliminate the gaps between the first guiding section 2310 and the first support 2100, and between the second guiding section 2510 and the first support 2100, so that the first support 2100 can be more stable during the process of moving up and down relative to the first guiding section 2310, and the second guiding section 2510 can be more stable during the process of moving back and forth relative to the first support 2100. Furthermore, the possibility of the headrest body 1000 shaking during the position adjustment process can be reduced, so as to better meet the use requirements and improve the user experience.

[0051] In some implementation manners, such as Figure 5 shown, the first support 2100 may be provided with a first guiding hole 2110 and a second guiding hole 2120. Among them, the first guiding hole 2110 can be used for plug-in cooperation with the first guiding section 2310, and the second guiding hole 2120 can be used for plug-in cooperation with the second guiding section 2510.

[0052] At least one of the first guiding hole 2110 and the second guiding hole 2120 includes a base hole portion and an enlarged hole portion. For the convenience of description, the base hole portion and the enlarged hole portion of the first guiding hole 2110 can be respectively called the first base hole portion 2111 and the first enlarged hole portion 2112, and the base hole portion and the enlarged hole portion of the second guiding hole 2120 can be respectively called the second base hole portion 2121 and the second enlarged hole portion 2122.

[0053] The first enlarged hole portion 2112 can be located at a partial area on the outer peripheral side of the first base hole portion 2111, and the first enlarged hole portion 2112 and the first base hole portion 2111 can be communicated with each other. The elastic clearance eliminating component 2700 can be arranged in the first enlarged hole portion 2112. With such an arrangement, the elastic clearance eliminating component 2700 is only located at a partial area in the circumferential direction of the first guiding section 2310, which can reduce the contact area between the elastic clearance eliminating component 2700 and the first guiding section 2310. Furthermore, the sliding resistance when the first support 2100 slides in the up and down direction along the first guiding section 2310 can be reduced, and the sliding smoothness of the first support 2100 along the first guiding section 2310 can be improved.

[0054] Similarly, the second reaming portion 2122 may also be located at a partial area on the outer circumferential side of the second base hole portion 2121, and the second reaming portion 2122 and the second base hole portion 2121 may be in communication. The elastic clearance eliminating member 2700 may also be disposed in the second reaming portion 2122. With such an arrangement, the elastic clearance eliminating member 2700 is only located at a partial area in the circumferential direction of the second guiding section 2510, which can reduce the contact area between the elastic clearance eliminating member 2700 and the second guiding section 2510, and further can reduce the sliding resistance when the first support 2100 slides relative to the second guiding section 2510 in the front-rear direction, and can improve the sliding smoothness of the first support 2100 relative to the second guiding section 2510.

[0055] Here, the embodiment of the present invention does not limit the distribution range of the first reaming portion 2112 in the circumferential direction of the first base hole portion 2111. Similarly, the embodiment of the present invention also does not limit the distribution range of the second reaming portion 2122 in the circumferential direction of the second base hole portion 2121. In practical applications, those skilled in the art can set it according to specific needs.

[0056] In some implementation manners, the number of the first guiding holes 2110 that are in plug-in fit with one first guiding section 2310 may be at least two, and the first guiding holes 2110 may be arranged at intervals along the axial direction of the first guiding section 2310.

[0057] Among the first guiding holes 2110, at least two first guiding holes 2110 may have different circumferential setting positions of the first reaming portions 2112. In this way, one first guiding section 2310 may have at least two elastic clearance eliminating members 2700 arranged along the axial direction, and at least two elastic clearance eliminating members 2700 may be distributed at different positions in the circumferential direction of the first guiding section 2310, so as to abut against the first guiding section 2310 in different directions, thereby can further improve the relative sliding stability of the first guiding section 2310 and the first support 2100. For example, among the two first guiding holes 2110 that are in plug-in fit with one first guiding section 2310, the first reaming portion 2112 of one first guiding hole 2110 may be located on one side of its first base hole portion 2111 in the front-rear direction, and the first reaming portion 2112 of the other first guiding hole 2110 may be located on one side of its first base hole portion 2111 in the left-right direction, so as to respectively arrange elastic clearance eliminating members 2700 in the front-rear direction and the left-right direction to abut against the first guiding section 2310.

[0058] In some implementation manners, the number of the second guiding holes 2120 that are in plug-in fit with one second guiding section 2510 may be at least two, and the second guiding holes 2120 may be arranged at intervals along the axial direction of the second guiding section 2510.

[0059] Among the second guiding holes 2120, there can be at least two second reaming portions 2122 of the second guiding holes 2120 with different circumferential setting positions. In this way, there can be at least two elastic clearance eliminating components 2700 arranged axially in a second guiding section 2510, and at least two elastic clearance eliminating components 2700 can be distributed at different positions in the circumferential direction of the second guiding section 2510, so as to abut against the second guiding section 2510 at different positions, thereby greatly improving the sliding stability between the second guiding section 2510 and the first support 2100. For example, among the two second guiding holes 2120 inserted and matched with a second guiding section 2510, the second reaming portion 2122 of one second guiding hole 2120 can be located on one side of its second base hole portion 2121 in the up-down direction, and the second reaming portion 2122 of the other second guiding hole 2120 can be located on one side of its second base hole portion 2121 in the left-right direction, so as to arrange the elastic clearance eliminating components 2700 in the up-down direction and the left-right direction respectively to abut against the second guiding section 2510.

[0060] In some implementation manners, as Figure 6 shown, the elastic clearance eliminating component 2700 can have a hollow hole 2711. The elastic clearance eliminating component 2700 can realize its own extrusion deformation and elastic recovery through this hollow hole 2711.

[0061] In some implementation manners, the elastic clearance eliminating component 2700 can be provided with a clamping portion 2720. The number of the clamping portions 2720 can be one or at least two, which is not limited herein. Specifically, the elastic clearance eliminating component 2700 can be clamped and assembled with the first support 2100 through the clamping portion 2720. In this way, the installation and disassembly of the elastic clearance eliminating component 2700 and the first support 2100 can be relatively easy.

[0062] Combined with Figure 6 , the elastic clearance eliminating component 2700 can include a body portion 2710. The body portion 2710 can be provided with the aforementioned hollow hole 2711. The clamping portion 2720 can be specifically formed on the outer wall surface of the body portion 2710.

[0063] In the above implementation manners, both the first guiding hole 2110 and the second guiding hole 2120 can include only one reaming portion. Or, at least one of the first guiding hole 2110 and the second guiding hole 2120 can also be provided with at least two reaming portions. Taking the first guiding hole 2110 as an example, it can be provided with at least two first reaming portions 2112, and the first reaming portions 2112 can be arranged at intervals around the circumference of the first base hole portion 2111.

[0064] In addition, in some other implementation manners of the embodiments of the present invention, the elastic backlash eliminating member 2700 may also be distributed in all regions in the circumferential direction of the first guiding section 2310. Similarly, the elastic backlash eliminating member 2700 may also be distributed in all regions in the circumferential direction of the second guiding section 2510. At this time, the elastic backlash eliminating member 2700 may be presented as an annular shape and arranged around the first guiding section 2310 and the second guiding section 2510.

[0065] In some implementation manners, the first driving member 2400 may include a first driving and rotating member 2410 and a first lead screw 2420.

[0066] The first driving and rotating member 2410 may specifically be a motor, which may be connected to the first lead screw 2420 to drive the first lead screw 2420 to rotate.

[0067] The first driving and rotating member 2410 may be installed on the first support 2100. Figure 3 and Figure 4 , the first driving member 2400 may further include a connecting frame 2430. The first driving and rotating member 2410 may be first connected to the connecting frame 2430. The specific connection manner may be, for example, screw connection, riveting, etc., and then the connecting frame 2430 is connected to the first support 2100, that is, the connection between the first driving and rotating member 2410 and the first support 2100 may be an indirect connection. Or, the first driving and rotating member 2410 and the first support 2100 may also be directly connected, and this is also feasible.

[0068] The adjusting mechanism 2000 may further include a third support 2800. The third support 2800 is installed on the first guiding member 2300, and specifically may be installed on the first guiding section 2310 through connection manners such as screw connection, riveting, etc.

[0069] The first lead screw 2420 may be in threaded connection with the third support 2800. In this way, when the first driving and rotating member 2410 is started, the first driving and rotating member 2410 may drive the first lead screw 2420 to rotate, and then through the threaded fit between the first lead screw 2420 and the third support 2800, the first support 2100 can be driven to perform a linear displacement along the first guiding section 2310.

[0070] The third support 2800 may be directly provided with a threaded hole for threaded connection with the first lead screw 2420. Or, the third support 2800 may also be installed with a threaded member 2130 through connection manners such as screw connection, welding, riveting, clamping, etc. The threaded member 2130 is provided with a threaded hole, and in this way, it can also be in threaded connection with the first lead screw 2420.

[0071] It should be understood that, in addition to the above technical solutions, in some other implementation manners of the embodiments of the present invention, the first driving member 2400 may also adopt other structural forms or installation manners. In short, as long as the first driving member 2400 can drive the first support 2100 to perform a linear displacement. For example, the first rotation driving member 2410 may also be installed on the third support 2800. At this time, the first lead screw 2420 may be threadedly connected to the first support 2100. For another example, the first driving member 2400 may also directly adopt driving elements such as a linear cylinder and a linear oil cylinder that can directly output a linear displacement, and this is also feasible.

[0072] In some implementation manners, the second driving member 2600 may include a second rotation driving member 2610 and a second lead screw 2620.

[0073] The second rotation driving member 2610 may specifically be a motor, which may be connected to the second lead screw 2620 to drive the second lead screw 2620 to rotate.

[0074] The second rotation driving member 2610 may be installed on the second support 2200. Similar to the first rotation driving member 2410, the connection and fixing manner between the second rotation driving member 2610 and the second support 2200 may also be a direct connection or an indirect connection, as long as a reliable connection between the second rotation driving member 2610 and the second support 2200 can be achieved.

[0075] The second lead screw 2620 may be threadedly connected to the first support 2100. In this way, when the second rotation driving member 2610 is started, the second rotation driving member 2610 can drive the second lead screw 2620 to rotate, and then through the threaded fit between the second lead screw 2620 and the first support 2100, the second support 2200 can be driven to displace relative to the first support 2100 in the front-back direction.

[0076] The first support 2100 may be directly provided with a threaded hole for threaded connection with the second lead screw 2620. Alternatively, the first support 2100 may also be installed with a threaded member 2130 through connection methods such as screw connection, welding, riveting, and clamping. The threaded member 2130 is provided with a threaded hole, and in this way, it can also be threadedly connected to the second lead screw 2620.

[0077] It should be understood that, in addition to the above technical solutions, in some other implementations of the embodiments of the present invention, the second driving component 2600 may also adopt other structural forms or installation methods. In short, as long as the second driving component 2600 can drive the second support 2200 to perform linear displacement. For example, the second driving component 2610 may also be installed on the first support 2100. In this case, the second screw rod 2620 may be threadedly connected to the second support 2200. For another example, the second driving component 2600 may also directly adopt a driving element that can directly output linear displacement, such as a linear cylinder, a linear oil cylinder, etc., which is also feasible.

[0078] In some implementations, such as Figure 3 and Figure 4 As shown, the first guide component 2300 may be a bending rod, including a first guide section 2310, a transition section 2330 and a mounting section 2320 connected in sequence. The first guide section 2310 and the transition section 2330 may be arranged at an angle, such as 90 degrees. The transition section 2330 and the mounting section 2320 may also be arranged at an angle, such as 90 degrees.

[0079] The transition section 2330 can limit the first support 2100 to prevent the first support 2100 from slipping off the first guide member 2300. At least part of the mounting section 2320 can extend out of the headrest body 1000. The mounting section 2320 is used to mount and fix the adjustable headrest provided in the embodiment of the present invention on the seat body. The specific mounting method is not limited here.

[0080] In the first guide component 2300, at least the installation section 2320 may be a hollow tube, the interior of which may be used for wiring to improve the compactness of the structure.

[0081] Please refer to Figures 7-11 , Figure 7 It is a schematic diagram of the structure of the adjustment mechanism when the headrest body is in the lowest and rearmost position; Figure 8 for Figure 7 sectional view of; Figure 9 It is a structural schematic diagram of the adjustment mechanism when the headrest body is in the highest and final position; Figure 10 It is a schematic diagram of the structure of the adjustment mechanism when the headrest body is in the lowest and rearmost position; Figure 11 It is a schematic diagram of the structure of the adjustment mechanism when the headrest body is in the lowest and most forward position.

[0082] The following embodiments of the present invention will be combined with Figures 7-11 The adjustment process of the adjustable headrest provided in the embodiment of the present invention is briefly described.

[0083] like Figure 7 and Figure 8As shown, the headrest body 1000 may be at the lowest position in the up-down direction and the rearmost position in the front-rear direction.

[0084] The first screw rod 2420 may be provided with a first limiting portion 2421, and the first limiting portion 2421 may abut against the third support 2800 in the vertical direction to limit the headrest body 1000 at the lowest position. It should be understood that in addition to the first limiting portion 2421, the embodiment of the present invention may also be provided with a limiting feature on the first guide component 2300 to limit the first support 2100, for example, the aforementioned transition section 2330 may abut against the first support 2100 to limit the lowest position of the headrest body 1000; or, a Hall sensor or the like may be provided to monitor the rotation amount of the first driving component 2410, so as to limit the moving position of the headrest body 1000 in the vertical direction.

[0085] like Figure 9 As shown, under the action of the first driving component 2400, the first support 2100 can move upward along the first guide section 2310 until it abuts against the third support 2800. At this time, the headrest body 1000 can be in the highest position in the up and down direction.

[0086] like Figure 10 As shown, the headrest body 1000 may be at the lowest position in the up-down direction and the rearmost position in the front-rear direction.

[0087] The second screw rod 2620 may be provided with a second limiting portion 2621, and the second limiting portion 2621 may abut against the first support 2100 along the front-to-back direction to limit the headrest body 1000 at the final position. It should be understood that in addition to the second limiting portion 2621, the embodiment of the present invention may also be provided with a limiting feature on the second guide section 2510 to abut against the first support 2100, thereby limiting the final position of the second support 2200 in the front-to-back direction; or, it may also be provided with a Hall sensor or the like to monitor the rotation amount of the second driving component 2610, thereby limiting the moving position of the headrest body 1000 in the front-to-back direction.

[0088] like Figure 11 As shown, under the action of the second driving component 2600, the second support 2200 can be displaced forward until it is limited by the first support 2100. At this time, the headrest body 1000 can be in the frontmost position in the front-to-back direction.

[0089] An embodiment of the present invention further provides a vehicle seat, comprising a seat body and a headrest.

[0090] The seat body may include a seat pan portion and a backrest portion. In some implementations, the backrest portion can rotate relative to the seat pan portion to facilitate adjusting the angle of the backrest portion. In other implementations, the backrest portion can also be fixedly arranged relative to the seat pan portion, that is, the angle of the backrest portion cannot be adjusted. The headrest can be installed on the seat body, specifically, it can be installed on the backrest portion.

[0091] The headrest can be the adjustable headrest involved in the foregoing various implementations. The first guiding member 2300 of the adjustable headrest has an installation section 2320. The installation section 2320 can extend out of the headrest body 1000, and the installation section 2320 can be connected to the backrest portion to achieve the installation and fixation of the headrest on the backrest portion. The specific connection manner between the installation section 2320 and the backrest portion is not limited herein. In practical applications, those skilled in the art can select according to specific needs as long as it can meet the usage requirements; for example, the installation section 2320 and the backrest portion can be connected by screw connection, riveting, clamping, welding and other connection methods.

[0092] The above are only the preferred implementation manners of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An adjustable headrest, characterized in that, It includes a headrest body (1000) and an adjustment mechanism (2000). The adjustment mechanism (2000) includes a first support (2100), a second support (2200), a first guiding member (2300), a first driving member (2400), a second guiding member (2500), a second driving member (2600) and an elastic clearance eliminating member (2700). The first guiding member (2300) includes a first guiding section (2310) extending in the up-and-down direction. The first support (2100) is slidably assembled on the first guiding section (2310). The first driving member (2400) is used to drive the first support (2100). The second support (2200) is installed on the second guiding member (2500). The second support (2200) is connected to the headrest body (1000). The second guiding member (2500) includes a second guiding section (2510) extending in the front-and-back direction. The first support (2100) is also slidably assembled on the second guiding section (2510). The second driving member (2600) is used to drive the second support (2200). The elastic clearance eliminating member (2700) is disposed between the first guiding section (2310) and the first support (2100), and between the second guiding section (2510) and the first support (2100).

2. The adjustable headrest according to claim 1, wherein, The first support (2100) is provided with a first guiding hole (2110) and a second guiding hole (2120). The first guiding section (2310) is inserted into the first guiding hole (2110). The second guiding section (2510) is inserted into the second guiding hole (2120). Any one of the first guiding hole (2110) and the second guiding hole (2120) includes a base hole portion and an enlarged hole portion. The enlarged hole portion is located at a partial area on the outer peripheral side of the base hole portion. The elastic clearance eliminating member (2700) is disposed in the enlarged hole portion.

3. The adjustable headrest according to claim 1, wherein, The number of the first guiding holes (2110) that are inserted and matched with one first guiding section (2310) is at least two. Among the first guiding holes (2110), at least two of the enlarged hole portions of the first guiding holes (2110) are different in circumferential setting positions; and / or, The number of the second guiding holes (2120) that are inserted and matched with one second guiding section (2510) is at least two. Among the second guiding holes (2120), at least two of the enlarged hole portions of the second guiding holes (2120) are different in circumferential setting positions.

4. The adjustable headrest according to claim 1, characterized in that, The elastic clearance eliminating member (2700) has a hollow hole (2711).

5. The adjustable headrest according to claim 1, wherein The elastic clearance eliminating member (2700) is provided with a clamping portion (2720). The elastic clearance eliminating member (2700) is clamped and assembled with the first support (2100) through the clamping portion (2720); and / or, The first support (2100), the second support (2200), the first guiding section (2310), the first driving component (2400), the second guiding component (2500), and the second driving component (2600) are all disposed within the headrest body (1000).

6. The adjustable headrest according to any one of claims 1-5, characterized in that, The first driving component (2400) includes a first rotating component (2410) and a first lead screw (2420). The first rotating component (2410) is configured to drive the first lead screw (2420) to rotate, and the first rotating component (2410) is mounted on the first support (2100). The adjusting mechanism (2000) further includes a third support (2800). The third support (2800) is mounted on the first guiding component (2300), and the first lead screw (2420) is threadedly connected to the third support (2800).

7. The adjustable headrest according to claim 6, characterized in that, The second driving component (2600) includes a second rotating component (2610) and a second lead screw (2620). The second rotating component (2610) is configured to drive the second lead screw (2620) to rotate. The second rotating component (2610) is mounted on the second support (2200), and the second lead screw (2620) is threadedly connected to the first support (2100).

8. The adjustable headrest according to claim 7, characterized in that, At least one of the first support (2100) and the third support (2800) is integrally formed with a threaded hole; or At least one of the first support (2100) and the third support (2800) is provided with a threaded member (2130), and the threaded member (2130) has a threaded hole.

9. The adjustable headrest according to claim 7, wherein At least one of the first lead screw (2420) and the second lead screw (2620) is provided with a limiting member.

10. A vehicle seat, characterized in that, Comprising a seat body and a headrest, the headrest is mounted on the seat body, and the headrest is the adjustable headrest according to any one of claims 1-9.

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