Adjustable seat headrest

Abstract

The utility model provides an adjustable seat headrest, relates to the technical field of vehicle accessories, and aims to optimize the structure of the seat headrest to a certain extent and improve the adaptability of the headrest to a user. The utility model provides an adjustable seat headrest which comprises a base, an inserting rod assembly and a base body. A guide part extending in the first direction is formed on the base, one end of the insertion rod assembly is connected with the seat backrest, and the other end of the insertion rod assembly penetrates through the guide part, so that the base can be driven to reciprocate on the insertion rod assembly in the first direction; a cavity extending in the second direction is formed in one of the base and the base body, the other one of the base body and the base is inserted into the cavity, the base body can reciprocate in the second direction relative to the base, and the first direction is perpendicular to the second direction.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to an adjustable seat headrest. Background Technology

[0002] As vehicles become increasingly common in people's lives, more and more people are demanding higher levels of driving comfort. Headrests, as an essential component of vehicle seats, provide head support, reduce user fatigue, and improve driving and riding comfort.

[0003] Existing headrest adjustment mechanisms, due to their inherent structural limitations, suffer from insufficient stability when adjusting the headrest's fore-and-aft position. They are also prone to wobbling and jamming during adjustment, affecting the passenger's experience.

[0004] Therefore, there is an urgent need to provide an adjustable seat headrest to address the problems existing in the prior art to some extent. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable headrest for seats, which helps to improve the stability when adjusting the front and back positions of the headrest.

[0006] This utility model provides an adjustable seat headrest, including a base, a plug assembly, and a base body; the base has a guide portion extending in a first direction, one end of the plug assembly is connected to the seat back, and the other end passes through the guide portion, so that the base can be driven to reciprocate along the first direction on the plug assembly; one of the base and the base body has a cavity extending in a second direction, and the other of the base body and the base body is inserted into the cavity, so that the base body can reciprocate relative to the base in the second direction; the first direction is perpendicular to the second direction.

[0007] As an optional solution for the adjustable seat headrest, the cavity is formed on the base, and the cross section of the cavity perpendicular to the second direction is configured to include a first cavity and / or a second cavity, wherein the first cavity extends along a third direction and the second cavity extends along the first direction;

[0008] The third direction is perpendicular to both the first direction and the second direction;

[0009] The base is inserted into the cavity, including a first base and / or a second base, wherein the first base corresponds to the first cavity and the second base corresponds to the second cavity.

[0010] As an optional solution for the adjustable seat headrest, the cross-section of the cavity perpendicular to the second direction is configured to include a first cavity and a second cavity, the first cavity and the second cavity being connected; the first base and the second base are integrally formed.

[0011] As an optional feature of the adjustable seat headrest, the second cavity is configured as two, symmetrically arranged relative to the first cavity, and the second base is configured as two, corresponding to the two second cavities respectively.

[0012] As an optional feature of the adjustable seat headrest, it also includes multiple lubricating pads, which are respectively disposed on the cavity walls of the first cavity and the second cavity; and / or,

[0013] They are respectively disposed on the outer walls of the first base and the second base.

[0014] As an optional feature of the adjustable seat headrest, the dimensions of both ends of the first base in the second direction are greater than the dimensions of the middle section of the first base and / or the dimensions of the second base in the second direction.

[0015] As an optional solution for the adjustable seat headrest, a drive mechanism is also included. The drive mechanism is mounted on the plug assembly via a connecting plate, and the output end of the drive mechanism is connected to the base to drive the base to reciprocate in the first direction.

[0016] As an optional solution for the adjustable seat headrest, the drive mechanism includes a motor, a lead screw connected to the output end of the motor, and a slider threaded through the lead screw. The motor is fixedly connected to the connecting plate, and the slider is fixedly connected to the base.

[0017] As an optional solution for the adjustable seat headrest, the insert assembly includes a first insert and a second insert. Both the first insert and the second insert include a first guide section, a third guide section, and a second guide section connected between the first guide section and the third guide section. The first guide sections of the first insert and the second insert are connected to the seat back, and the third guide sections of the first insert and the second insert are parallel to each other and pass through the guide portion of the base.

[0018] As an optional feature of the adjustable seat headrest, the distance between the end of the first insert rod and the second insert rod connected to the third guide section is smaller than the distance between the end of the first guide section and the second guide section connected; one end of the connecting plate is connected to the second guide section of the first insert rod, and the other end is connected to the second guide section of the second insert rod.

[0019] As an optional feature of the adjustable seat headrest, a locking mechanism is also included, which is configured to allow the base to move away from the base relative to the seat, but restrict the base to move closer to the base relative to the seat.

[0020] As an optional solution for the adjustable headrest, an unlocking mechanism is also included. The locking mechanism includes a latch; the base has a slot extending along the second direction corresponding to the position of the latch. The unlocking mechanism can pull the latch out of or into the slot to release or restrict the movement of the base relative to the base. Compared to the prior art, the adjustable headrest provided by this utility model has the following advantages:

[0021] The adjustable seat headrest provided in this application includes a base, a plug assembly, and a base body; a guide portion extending in a first direction is formed on the base, one end of the plug assembly is connected to the seat back, and the other end passes through the guide portion, so that the base can be driven to reciprocate along the first direction on the plug assembly; a cavity extending in a second direction is formed on one of the base and the base body, and the other of the base and the base body is inserted into the cavity, so that the base body can reciprocate relative to the base in the second direction; the first direction is perpendicular to the second direction.

[0022] Analysis shows that the guide portion formed on the base can connect with the seat backrest in conjunction with the plug assembly. The cavity extending in the second direction formed by the base or the base body allows another part of the base or the base body to be inserted into the cavity, enabling the base body, as a single part, to reciprocate relative to the base in the second direction. This makes the operating force easier to adjust and ensures stability during the sliding process, greatly reducing the problem of shaking or jamming during adjustment and improving the user experience. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 An exploded first-view diagram of the headrest portion of the adjustable seat headrest provided in an embodiment of this utility model;

[0025] Figure 2 This is a second-view exploded view of the headrest portion of the adjustable seat headrest provided in an embodiment of the present utility model;

[0026] Figure 3This is a schematic diagram of the structure of the base of the adjustable seat headrest provided in an embodiment of the present utility model;

[0027] Figure 4 A cross-sectional view of the base of the adjustable seat headrest provided in an embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the base in the adjustable seat headrest provided in an embodiment of the present utility model;

[0029] Figure 6 A cross-sectional view of the base of the adjustable seat headrest provided in an embodiment of this utility model;

[0030] Figure 7 A first-view assembly diagram of the base and body of the adjustable seat headrest provided in this embodiment of the utility model;

[0031] Figure 8 A cross-sectional view of the base and body of the adjustable seat headrest provided in this embodiment of the utility model from a second perspective;

[0032] Figure 9 A schematic diagram of the assembly of the base and the body in the adjustable seat headrest provided in this embodiment of the utility model from a second perspective;

[0033] Figure 10 A partial structural schematic diagram from a first perspective of the assembly of the base and the substrate in the adjustable seat headrest provided in an embodiment of this utility model;

[0034] Figure 11 A partial cross-sectional view of the assembly of the base and the body in the adjustable seat headrest provided in this embodiment of the utility model;

[0035] Figure 12 An exploded view of the drive mechanism and base in the adjustable seat headrest provided in this embodiment of the utility model;

[0036] Figure 13 A first-view structural schematic diagram of the assembly of the drive mechanism and the base in the adjustable seat headrest provided in an embodiment of this utility model;

[0037] Figure 14 A cross-sectional view of the adjustable seat headrest insert rod assembly and bushing assembly provided in an embodiment of this utility model;

[0038] Figure 15 A schematic diagram of the internal structure of the adjustable seat headrest bushing provided in this embodiment of the utility model;

[0039] Figure 16 A second-view structural schematic diagram of the assembly of the drive mechanism and the base in the adjustable seat headrest provided in this embodiment of the utility model;

[0040] Figure 17 for Figure 16 A magnified view of a section at point A in the middle;

[0041] Figure 18 for Figure 16 A magnified view of a section at point B in the middle;

[0042] Figure 19 This is a schematic diagram of the adjustable seat headrest in its lowest position according to an embodiment of the present invention.

[0043] Figure 20 This is a schematic diagram of the adjustable seat headrest in its highest position, provided in an embodiment of the present invention.

[0044] Figure 21 A schematic diagram of the assembly of the switch and the back cover in the adjustable seat headrest provided for an embodiment of this utility model;

[0045] Figure 22 A schematic diagram of the structure between the locking mechanism and the base and body in the adjustable seat headrest provided in this embodiment of the utility model;

[0046] Figure 23 A schematic diagram of the adjustable seat headrest in the locked state provided in this embodiment of the utility model;

[0047] Figure 24 A schematic diagram of the adjustable seat headrest in the unlocked state provided in this embodiment of the utility model;

[0048] Figure 25 A schematic diagram illustrating the cooperation between the locking tongue and the slot in the front, middle, and rear positions of the adjustable seat headrest provided in this embodiment of the utility model;

[0049] Figure 26 A schematic diagram of the assembly of the base and the front shell of the adjustable seat headrest provided in this embodiment of the utility model;

[0050] Figure 27 A cross-sectional view of the connection position between the base and the front shell in the adjustable seat headrest provided in this embodiment of the utility model;

[0051] Figure 28 A schematic diagram of the assembly of the base and the rear shell of the adjustable seat headrest provided in this embodiment of the utility model;

[0052] Figure 29 A cross-sectional view of the connection position between the base and the rear shell of the adjustable seat headrest provided in this embodiment of the utility model;

[0053] Figure 30 This is a schematic diagram of the structure of the rear shell of the adjustable seat headrest provided in an embodiment of the present utility model;

[0054] Figure 31 for Figure 30 A magnified view of a section at point C;

[0055] Figure 32 An exploded view of the front and rear neck covers and the base of the adjustable seat headrest provided in this embodiment of the utility model.

[0056] Figure 33 This is a structural schematic diagram of the adjustable seat headrest from a first-view perspective, provided in an embodiment of the present utility model.

[0057] Figure 34 This is a structural schematic diagram of the adjustable seat headrest from a second perspective, provided in an embodiment of the present invention.

[0058] In the figure: 1-front shell; 101-first buckle; 2-base; 201-first bayonet; 202-first base; 2021-first stop; 2022-second stop; 205-second base; 207-slot; 2071-limiting groove; 2072-slot; 3-first fastener; 4-base; 401-second bayonet; 402-first cavity; 4021-first limiting part; 4022-guide surface; 4023-limiting surface; 4024-second limiting part; 405-second cavity; 408-mounting part; 4081-guide part; 5-reset assembly; 501-first reset component; 502-second reset component; 6-locking tongue; 7-linkage structure; 701-first link; 702-rotating shaft; 703-second link; 8-slider; 9-front 10-Neck cover; 11-First positioning component; 12-Second fastener; 13-Bushel; 1301-Flanged part; 1302-Main body section; 1303-Protrusion; 1304-Snap-fit ​​flange; 14-Pin rod assembly; 1401-First pin; 1402-Second pin; 1403-First guide section; 1404-Second guide section; 1405-Third guide section; 15-Motor; 1501-Lead screw; 16-Connecting plate; 17-Third fastener; 18-Rear neck cover; 19-Rubber gasket; 20-Metal gasket; 21-Switch; 2101-Positioning frame; 2102-Pressing part; 22-Rear shell; 2201-Second buckle; 23-Shielding cover; 24-Lubricating sheet; 25-Base component; 26-Wire harness; 27-Seat backrest. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0060] like Figures 1-20 As shown, this utility model provides an adjustable seat headrest, including a base 4, a plug assembly 14, and a base 2; a guide portion 4081 extending in a first direction is formed on the base 4 (see reference). Figure 7 One end of the insert rod assembly 14 is fixedly connected to the seat back (see reference). Figure 20 The other end passes through the guide portion 4081, causing the base 4 to reciprocate on the insertion rod assembly 14 in the first direction; a cavity extending in the second direction is formed on one of the base 4 and the base 2, and the other of the base 4 and the base 2 is inserted into the cavity, so that the base 2 can reciprocate relative to the base 4 in the second direction; the first direction is perpendicular to the second direction.

[0061] like Figures 3-6 As shown, a cavity extending along a second direction is formed on the base 4. The base 2 is inserted into this cavity, allowing the base 2 to reciprocate relative to the base 4 along the second direction. The cross-section of the cavity perpendicular to the second direction is configured to include a first cavity 402 and / or a second cavity 405. The first cavity 402 extends along a third direction, and the second cavity 405 extends along a first direction. The third direction is perpendicular to both the first and second directions. In practice, with the vehicle as a reference, the first direction is the vertical direction, the second direction is the front-to-back direction, and the third direction is the left-to-right direction.

[0062] The base 2 is inserted into the cavity, including a first base 202 and / or a second base 205, the first base 202 corresponding to the first cavity 402, and the second base 205 corresponding to the second cavity 405.

[0063] It is understood that when the cavity only includes the first cavity 402, the base 2 only includes the first base 202, and the first base 202 is inserted into the first cavity 402; when the cavity only includes the second cavity 405, the base 2 only includes the second base 205, and the second base 205 is inserted into the second cavity 405.

[0064] Preferably, in this embodiment, the cavity includes a first cavity 402 and a second cavity 405, and the first cavity 402 and the second cavity 405 are connected; the base body 2 is an integral structure, including a first base 202 and a second base 205. The first base 202 is inserted into the first cavity 402, and the second base 205 is inserted into the second cavity 405. Thereby, circumferential positioning of the base body 2 can be achieved, avoiding rotation of the base body 2 relative to the base 4, and improving the sliding stability and positioning stability between the base 4 and the base body 2.

[0065] On this basis, the present application further optimizes the cavity. Among them, the second cavity 405 is provided in two, symmetrically arranged relative to the first cavity 402 respectively, and the second base 205 is correspondingly provided in two, and is correspondingly inserted into the two second cavities 405 respectively.

[0066] It should be noted that in this embodiment, the two second cavities 405 are symmetrically arranged relative to the first cavity 402, specifically referring to that the two second cavities 405 are symmetric about a plane perpendicular to the third direction passing through the midpoint of the first cavity 402 in the third direction. The two second cavities 405 arranged symmetrically in this way can achieve stable and reliable support of the base 4 for the base body 2, and ensure smooth sliding of the base body 2 relative to the base 4 in the second direction.

[0067] Moreover, the first cavity 402 extends in the third direction, and the two second cavities 405 extend in the first direction, which can further increase the connection stability and sliding stability between the base 4 and the base body 2, and realize the position limitation of the two second bases 205 in the left - right direction, avoiding large - scale movement of the base body 2 in the left - right direction.

[0068] It can be understood that the cross - section of the cavity composed of the first cavity 402 and the two second cavities 405 perpendicular to the second direction can be concave - shaped, that is, the two second cavities 405 are located on the upper side of the first cavity 402 and at the relative two ends of the first cavity 402 in the third direction; it can also be π - shaped, that is, the two second cavities 405 are located on the lower side of the first cavity 402; it can also be H - shaped or 艹 - shaped, etc., all of which can make the sliding process of the base body 2 smoother without jamming.

[0069] It should be noted that in another embodiment, the number of the second cavities 405 can also be only one. In this case, in order to ensure stable support of the base body 2, it is preferred to set the second cavity 405 at the middle position of the first cavity 402 in the third direction, and the second cavity 405 itself is symmetric about a plane perpendicular to the third direction passing through the midpoint of the first cavity 402 in the third direction.

[0070] Preferably, the adjustable headrest provided by this utility model further includes a lubricating plate 24, which is disposed on the cavity wall of the cavity. Specifically, there can be multiple lubricating plates 24, which are respectively disposed on the cavity walls of the first cavity 402 and the second cavity 405 to reduce the sliding friction between the base 2 and the base 4.

[0071] The lubricating sheet 24 in this application can be made of PTFE material, or a metal or plastic sheet, so as to ensure that the substrate 2 is subjected to uniform force when sliding, reduce the sliding friction between the substrate 2 and the base 4, ensure smooth sliding, and reduce the unpleasant experience caused by jamming.

[0072] Understandably, since the lubricating plate 24 has a certain amount of compression, on the one hand, it can provide a certain sliding gap between the base 2 and the base 4 during sliding to meet the sliding requirements; on the other hand, it can pre-tighten the assembly of the base 2 in the cavity to avoid the base 2 shaking during sliding due to the gap fit between the base 2 and the cavity.

[0073] It is understandable that the lubricating sheet 24 can also be disposed on the base 2, specifically on the outer wall of the first base 202 and the second base 205 (e.g., Figure 5 (As shown).

[0074] It is understandable that, such as Figure 7 As shown, since the base 4 in this application has a mounting portion 408 on its back, and guide portions 4081 extending along the first direction are respectively provided on the left and right sides of the mounting portion 408, and the mounting portion 408 corresponds to the middle portion of the first cavity 402, in order to avoid the mounting portion 408, the size of the middle portion of the first cavity 402 in the third direction is restricted in the second direction. Correspondingly, the two ends of the first cavity 402 in the third direction are not restricted, and their size in the second direction can be increased. Correspondingly, the size of the two ends of the first base 202 in the second direction can be greater than the size of the middle section of the first base 202 and / or the size of the second base 205 in the second direction.

[0075] like Figure 5 As shown in this application, the dimensions of both ends of the first base 202 in the second direction are larger than the dimensions of the middle section of the first base 202 and the second base 205 in the second direction, so that the base 2 has a larger displacement in the second direction to meet the sliding stroke of the base 2 and improve the adjustment range. In addition, as an integral structure, when the base 2 extends relative to the base 4, the contact area between the base 2 and the base 4 is larger and the overall structure is more robust. Therefore, the base 2 is more stable in cantilever movement, avoiding the problem of the suspended end of the base 2 falling due to gravity; and the operating force is also easier to adjust for the movement of the integral base 2.

[0076] like Figures 9-11 As shown, to prevent the base 2 from detaching from the base 4 during sliding, the top and bottom of the first base 202 in this application are respectively provided with a first stop 2021 and a second stop 2022; the first cavity 402 is provided with a first limiting part 4021 and a second limiting part 4024 corresponding to the positions of the first stop 2021 and the second stop 2022; wherein, the first limiting part 4021 includes a guide surface 4022 and a limiting surface 4023. When the base 2 is installed, the first stop 2021 passes over the limiting surface 4023 under the guidance of the guide surface 4022, that is, the first stop 2021 passes over the first limiting part 4021; the second stop 2022 passes over the second limiting part 4024. When the base 2 moves away from the base 4 in a direction away from the base 4 until the first stop 2021 abuts against the limiting surface 4023, and at the same time the second stop 2022 abuts against the second limiting part 4024, the base 2 is limited by the base 4, and the headrest is adjusted to the foremost position.

[0077] By forming a first stop 2021 and a second stop 2022 at the top and bottom of the first base 202 respectively, the force on the base 2 when it is limited can be more uniform. Preferably, in this application, the number of the first stop 2021 and the second stop 2022 is at least two. Correspondingly, the number and position of the first limiting part 4021 and the second limiting part 4024 correspond to the first stop 2021 and the second stop 2022, thereby further ensuring the stability of the limiting.

[0078] like Figure 12 and Figure 13As shown, the insert assembly 14 in this application includes a first insert 1401 and a second insert 1402. The first insert 1401 is connected to the second insert via a first positioning member 10. Both the first insert 1401 and the second insert 1402 include a first guide section 1403, a second guide section 1404, and a third guide section 1405. The first guide section 1403 of the first insert 1401 and the second insert 1402 is disposed within the seat back 27 for fixed connection with the seat back 27. It should be noted that the fixed connection between the first guide section 1403 and the seat back 27 means that their positions remain fixed after assembly; in practical applications, this can be a detachable assembly structure. The third guide sections 1405 of the first insert 1401 and the second insert 1402 are arranged parallel to each other and pass through the guide portion 4081 on the base 4, enabling the base 4 to move along the first direction on the insert assembly 14. The guide section 4081 and the third guide section 1405 can be fitted with a clearance, and the diameter of the third guide section 1405 is slightly smaller than the inner diameter of the guide section 4081. This allows the base 4 to move relative to the insertion rod assembly 14, and also allows the base 4 to be held in the corresponding adjusted position after adjustment. One end of the second guide section 1404 of the first insertion rod 1401 and the second insertion rod 1402 is connected to the first guide section 1403, and the other end is connected to the third guide section 1405.

[0079] In this embodiment, one end of the first positioning member 10 is connected to the position where the second guide section 1404 and the third guide section 1405 of the first insertion rod 1401 are connected, and the other end of the first positioning member 10 is connected to the position where the second guide section 1404 and the third guide section 1405 of the second insertion rod 1402 are connected.

[0080] The adjustable seat headrest of this application also includes a drive mechanism, which is disposed on the plug assembly 14 and the output end of the drive mechanism is connected to the base 4 to drive the base 4 to reciprocate in a first direction.

[0081] This application provides a connecting plate 16 between the second guide section 1404 of the first insertion rod 1401 and the second insertion rod 1402, and a drive mechanism is mounted on the connecting plate 16. The output end of the drive mechanism is connected to the base 4, so that when the drive mechanism is activated, it can drive the base 4 to reciprocate in a first direction, thereby improving the user experience. The drive mechanism, positioned between the first insertion rod 1401 and the second insertion rod 1402, can withstand a larger headrest, resulting in smoother movement.

[0082] Preferably, such as Figures 12-18As shown, the driving mechanism includes a motor 15, a lead screw 1501, and a slider 8. The motor 15 is connected to the connecting plate 16. The lead screw 1501 extends along a first direction, and one end of the lead screw 1501 is connected to the output end of the motor 15. The slider 8 is fixedly connected to the base 4. The lead screw 1501 passes through the slider 8 and is threadedly engaged with the slider 8. The motor 15 drives the lead screw 1501 to rotate, and the slider 8 moves on the lead screw 1501 through the threaded engagement, thereby realizing the movement of the base 4 along the lead screw 1501.

[0083] Because the distance between the two second guide sections 1404 needs to accommodate the installation of the motor 15, and if the distance between the two third guide sections 1405 were the same as the distance between the second guide sections 1404, the overall headrest would be too wide, affecting its aesthetics. Therefore, the distance between the ends of the two second guide sections 1404 connected to the first guide section 1403 is greater than the distance between the ends of the two second guide sections 1404 connected to the third guide section 1405. Figure 13 As shown, the two second guide sections 1404 are arranged in a gradually approaching manner, which can reduce the interval and thus reduce the interval between the two parallel third guide sections 1405, so as to avoid the problem of the headrest being too wide and affecting the aesthetics.

[0084] It should be noted that since the other end of the lead screw 1501 needs to be connected to the base 4 through a mating component, such as a bearing, the motor 15 is positioned on the side of the connecting plate 16 facing the base 4. This allows the lead screw 1501 to be connected directly to the output end of the motor 15 without having to pass through the connecting plate 16. This avoids the problem of the motor 15 seizing due to dimensional tolerances between the opening on the connecting plate 16 through which the lead screw 1501 passes and the mating component.

[0085] Optionally, such as Figure 12 and Figure 14 As shown, the adjustable seat headrest provided by this utility model also includes a bushing 13. The bushing 13 includes a main body section 1302 and a flanged portion 1301. A snap-fit ​​flange 1304 is formed at the end of the main body section 1302 away from the flanged portion 1301. The main body section 1302 is cylindrical and inserted into the guide portion 4081. The flanged portion 1301 abuts against the edge of the guide portion 4081, and the snap-fit ​​flange 1304 snaps against the bottom edge of the guide portion 4081, thereby achieving the limitation between the bushing 13 and the guide portion 4081 and preventing the bushing 13 from moving around. The third guide section 1405 passes through the main body section 1302 to make the movement of the first insert rod 1401 and the second insert rod 1402 more stable.

[0086] Preferably, such as Figure 15As shown, a protrusion 1303 is formed inside the main body section 1302. The protrusion 1303 can absorb the tolerance between the first insert 1401 and the second insert 1402, improve sliding stability, and reduce noise generation.

[0087] More preferably, the ends of the first insertion rod 1401 and the second insertion rod 1402 are further provided with a second positioning member 12 and a second fastener 11. The two ends of the second positioning member 12 are respectively connected to the ends of the first insertion rod 1401 and the second insertion rod 1402 via the second fastener 11. This serves two purposes: firstly, it limits the positioning of the ends of the first insertion rod 1401 and the second insertion rod 1402; secondly, the second positioning member 12 can abut against the flange portion 1301, thereby achieving... Figure 20 The middle limit is set when the base 4 moves vertically to the uppermost position.

[0088] It is understandable that, such as Figure 14 As shown, both the first insertion rod 1401 and the second insertion rod 1402 in this application are hollow structures, which reduces weight and makes the overall headrest lighter. The hollow ends of the first insertion rod 1401 and the second insertion rod 1402 are provided with a base component 25, which in this application is an embedded nut. Correspondingly, the second fastener 11 is a screw, which passes through the second positioning component 12 and connects to the embedded nut to position the second positioning component 12.

[0089] Optionally, such as Figure 17 As shown, the slider 8 is fixedly connected to the mounting part 408 of the base 4. The mounting part 408 has a mounting groove. The slider 8 is embedded in the mounting groove and fixedly connected to the mounting groove.

[0090] Optionally, such as Figure 18 As shown, the motor 15 and the connecting plate 16 can be connected by a third fastener 17 (e.g., a screw). The drive mechanism in the application also includes a buffer assembly, which is placed between the motor 15 and the connecting plate 16. The buffer assembly includes a metal gasket 20 and a rubber gasket 19. By placing the metal gasket 20 and the rubber gasket 19 between the motor 15 and the connecting plate 16, the vibration and abnormal noise of the motor 15 during operation can be further reduced.

[0091] like Figure 19 and Figure 20As shown, the third guide section 1405 of the first insertion rod 1401 and the second insertion rod 1402 cooperates with the base 4 and corresponds to the human head position, while the second guide section 1404 corresponds to the human neck position. Therefore, by placing the motor 15 at the neck position, this application can reduce the transmission of vibration and noise generated by the motor 15 to the user's head position, thereby improving user comfort. Since the motor 15 is not placed inside the headrest, the impact of resonance on sound quality can be reduced, resulting in better sound quality of the speakers inside the headrest. Since the motor 15 is not placed inside the seat back, it does not occupy the backrest space, which is beneficial for the arrangement of electrical modules and gives the seat design more space.

[0092] In this application, the first direction is vertical, and the second direction is horizontal. The headrest adjustment along the first direction is electric. When the base 4 reciprocates along the first direction on the insert rod assembly 14, it can move the base 2 along the first direction together, thereby achieving vertical adjustment of the entire headrest. The headrest adjustment along the second direction is manual. The base 4 is relatively fixed on the insert rod assembly 14, and the base 2 reciprocates relative to the base 4 along the second direction, thereby achieving horizontal adjustment of the entire headrest to adapt to different user body shapes and driving habits, providing support for the user's head and improving the user's driving and usage experience.

[0093] Preferably, such as Figures 21-25 As shown, the adjustable seat headrest provided by this utility model also includes a front shell 1 and a rear shell 22. The front shell 1 covers the outside of the base 2, and the base 2 is snapped into the front shell 1. The rear shell 22 covers the outside of the base 4, and the rear shell 22 is snapped into the base 4.

[0094] like Figure 26 and Figure 27 As shown, a plurality of first snap-fits 101 are formed inside the front shell 1, and correspondingly, a first latch 201 is formed at the corresponding position on the base 2. The detachable connection between the front shell 1 and the base 2 is achieved by the snap-fits 101 and the first latch 201. In some cases, when the number of first snap-fits 101 is insufficient to meet the assembly force requirements, a first fastener 3 (e.g., a screw) can be further installed.

[0095] like Figure 28 and Figure 29 As shown, a plurality of second buckles 2201 are formed inside the rear shell 22, and correspondingly, a second latch 401 is formed at the corresponding position on the base 4, thereby realizing the detachable connection between the rear shell 22 and the base 4 through the engagement of the second buckles 2201 and the second latch 401.

[0096] The adjustable seat headrest provided by this utility model also includes a locking mechanism, which is configured to allow the base 2 to move away from the base 4 relative to the base 4, but restrict the base 2 from moving towards the base 4 relative to the base 4.

[0097] Correspondingly, the adjustable seat headrest also includes an unlocking mechanism. The locking mechanism includes a latch 6. The base 2 has a slot 207 extending in the second direction at the position corresponding to the latch 6. The unlocking mechanism can pull the latch 6 to disengage from or insert into the slot 207 to release or restrict the movement of the base 2 relative to the base 4.

[0098] Specifically, the unlocking mechanism includes a switch 21, a reset assembly 5, and a linkage structure 7. The switch 21 is movably connected to the rear shell 22, and the linkage structure 7 is rotatably connected to the base 4. The first end of the linkage structure 7 is in contact with the switch 21, and the second end of the linkage structure 7 is connected to the latch 6. The latch 6 extends in a first direction, and the base 2 has a slot 207 extending in a second direction corresponding to the position of the latch 6. The reset assembly 5 includes a first reset member 501 and a second reset member 502. One end of the first reset member 501 is connected to the base 4, and the other end is connected to the linkage structure 7. One end of the second reset member 502 is connected to the base 4, and the other end is connected to one end of the latch 6.

[0099] The switch 21 in this application includes a positioning frame 2101 and a pressing part 2102. The positioning frame 2101 is fixedly connected to the rear shell 22. The positioning frame 2101 forms a bearing space that can bear the pressing part 2102. Preferably, a spring is provided inside the positioning frame 2101. One end of the spring is connected to the positioning frame 2101, and the other end is connected to the pressing part 2102. The pressing part 2102 forms a trigger part that extends out of the positioning frame 2101 and passes through the rear shell 22 to enter the interior.

[0100] When the pressing part 2102 is operated, the trigger part moves toward the first end of the linkage structure 7. At the same time, the spring in the positioning frame 2101 is compressed. When the pressing part 2102 is released, the spring returns and drives the pressing part 2102 to return to its original state. The trigger part moves away from the first end of the linkage structure 7.

[0101] When the triggering part pushes the first end of the linkage structure 7 to move, the linkage structure 7 rotates relative to the base 4. Therefore, it can drive the second end of the linkage structure 7 to pull the locking tongue 6, so that the locking tongue 6 moves away from the slot part 207, thereby unlocking the base 2.

[0102] When the trigger part leaves the end of the first link 701, the first reset member 501 and the second reset member 502 retract, restoring the link structure 7, and the locking tongue 6 is inserted into the slot 207 again to lock the base 2.

[0103] Preferably, such as Figure 23 Combination Figure 24 As shown, the linkage structure 7 in this application includes a first linkage 701, a rotating shaft 702 and a second linkage 703. One end of the first linkage 701 is located near the trigger part, and the other end is connected to the rotating shaft 702. One end of the second linkage 703 is connected to the rotating shaft 702, and the other end is connected to the locking tongue 6.

[0104] In this application, both the first reset member 501 and the second reset member 502 are tension springs, and other elastic structures may also be used.

[0105] Preferably, such as Figure 25 As shown, the slot portion 207 in this application includes multiple slots 2072 and a limiting groove 2071 disposed at the end of the slot portion 207. Each slot 2072 includes a vertical surface extending along a first direction and a guide slope angled to the vertical surface. The top end of the latch 6 is configured as an inclined surface adapted to the guide slope, allowing the base 2 to move freely in the second direction away from the base 4 without manual unlocking. The guide slope of the slot 2072 can push the latch 6 away from the slot 2072 through the inclined surface of the latch 6, allowing the base 2 to move to a suitable position relative to the base 4. Under the action of the second reset member 502, the latch 6 is reinserted into the slot 2072. The movement of the base 2 in the second direction toward the base 4 is restricted because the latch 6 is blocked by the vertical surface of the slot 2072, requiring manual unlocking via a switch. Until the locking tongue 6 is inserted into the limiting groove 2071, the base 2 can no longer move away from the base 4, at which point the headrest is in the foremost position.

[0106] like Figure 30 and Figure 31 As shown, the base 4 also includes a cover 23, and an opening is formed at the bottom of the rear shell 22. The cover 23 covers the opening and is engaged with the rear shell 22.

[0107] The opening facilitates the installation of the base 4, while the cover 23 can be used to close the opening, improving its aesthetics. Figures 32 to 34 As shown, the adjustable headrest provided by this utility model also includes a front neck cover 9 and a rear neck cover 18. The front neck cover 9 is positioned to cover the second guide section 1404 of the insert rod assembly 14, and the rear neck cover 18 is positioned to cover the connection between the second guide section 1404 and the third guide section 1405 (see reference). Figure 20 Both the rear neck cover 18 and the front neck cover 9 are connected to the base 4.

[0108] It should be noted that the adjustable headrest of this application is located at the top front of the seat back, which is mainly for the high-back design requirements of the seat. The front neck cover 9, rear neck cover 18, and shielding cover 23, together with the rear shell 22 and front shell 1, can completely cover the base 4, base body 2, motor 15 and other structures, preventing the internal structure from being exposed when the headrest is adjusted to the highest position. This can improve the aesthetics of the overall structure to a certain extent. In addition, the backrest height of high-back seats is usually higher than that of ordinary seats. The height of the backrest usually extends to the user's shoulders or neck, or even higher, providing comprehensive support from the waist to the shoulders and even the neck.

[0109] It should be noted that this application also includes a wiring harness 26, which provides power input and start / stop control for the motor 15.

[0110] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0111] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0112] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0113] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0114] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0115] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0116] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0117] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0118] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

Claims

1. An adjustable seat headrest, characterized in that, Includes base, insert assembly, and base body; The base has a guide portion extending in a first direction. One end of the insert rod assembly is connected to the seat back, and the other end passes through the guide portion, so that the base can be driven to reciprocate along the first direction on the insert rod assembly. One of the base and the substrate has a cavity extending in a second direction, and the other of the substrate and the base is inserted into the cavity, so that the substrate can reciprocate relative to the base in the second direction; The first direction is perpendicular to the second direction.

2. The adjustable seat headrest according to claim 1, characterized in that, The cavity is formed on the base, and the cross section of the cavity perpendicular to the second direction is configured to include a first cavity and / or a second cavity, wherein the first cavity extends along a third direction and the second cavity extends along the first direction; The third direction is perpendicular to both the first direction and the second direction; The base is inserted into the cavity, including a first base and / or a second base, wherein the first base corresponds to the first cavity and the second base corresponds to the second cavity.

3. The adjustable seat headrest according to claim 2, characterized in that, The cross-section of the cavity perpendicular to the second direction is configured to include a first cavity and a second cavity, the first cavity and the second cavity being connected; the first base and the second base are integrally formed.

4. The adjustable seat headrest according to claim 3, characterized in that, The second cavity is configured as two, symmetrically arranged relative to the first cavity, and the second base is configured as two, corresponding to the two second cavities respectively.

5. The adjustable seat headrest according to claim 3, characterized in that, The dimensions of the two ends of the first base in the second direction are greater than the dimensions of the middle section of the first base and / or the dimensions of the second base in the second direction.

6. The adjustable seat headrest according to claim 1, characterized in that, It also includes a drive mechanism, which is mounted on the plug assembly via a connecting plate, and the output end of the drive mechanism is connected to the base to drive the base to reciprocate in the first direction.

7. The adjustable seat headrest according to claim 6, characterized in that, The drive mechanism includes a motor, a lead screw connected to the output end of the motor, and a slider threaded through the lead screw. The motor is fixedly connected to the connecting plate, and the slider is fixedly connected to the base.

8. The adjustable seat headrest according to claim 6, characterized in that, The insertion rod assembly includes a first insertion rod and a second insertion rod. Both the first insertion rod and the second insertion rod include a first guide section, a third guide section, and a second guide section connected between the first guide section and the third guide section. The first guide section of the first insert rod and the second insert rod are connected to the seat back, and the third guide section of the first insert rod and the second insert rod are parallel to each other and pass through the guide portion of the base.

9. The adjustable seat headrest according to claim 8, characterized in that, The distance between the end of the first insert rod and the second insert rod connected to the third guide segment is smaller than the distance between the end of the first guide segment and the end of the second guide segment connected; One end of the connecting plate is connected to the second guide section of the first insert rod, and the other end is connected to the second guide section of the second insert rod.

10. The adjustable seat headrest according to claim 1, characterized in that, It also includes a locking mechanism configured to allow the base to move away from the base relative to the base, but restrict the base to move closer to the base relative to the base.

11. The adjustable seat headrest according to claim 10, characterized in that, It also includes an unlocking mechanism, wherein the locking mechanism includes a locking bolt; The base has a slot extending in the second direction at the position corresponding to the latch. The unlocking mechanism can pull the latch out of or into the slot to release or restrict the movement of the base relative to the base.

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