Zero gravity adaptive adjustable headrest and vehicle

Abstract

This invention discloses a zero-gravity adaptive adjustable headrest, comprising a headrest body disposed on a sliding mechanism, a guide mechanism disposed on the headrest body, a limiting member disposed on the sliding mechanism, and a movable gravity ball disposed on the guide mechanism for limiting the limiting member when the headrest body is in a first position. The gravity ball is configured such that, after separating from the limiting member, the headrest body can move downwards from the first position to a second position. In this zero-gravity adaptive adjustable headrest, the gravity ball slides to avoid a blocking point while the seat unfolds in zero gravity, allowing the headrest to slide downwards, increasing the downward adjustment range of the headrest position. This structure can reduce costs and improve seat comfort and user experience. This invention also discloses a vehicle.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology. Specifically, this invention relates to a zero-gravity adaptive adjustable headrest and a vehicle. Background Technology

[0002] Zero-gravity car seats improve passenger comfort and are currently available in some vehicles. As people travel, they increasingly prioritize passenger comfort. Comfort involves more than just space; seat comfort, seat design, and functional versatility are also crucial. Therefore, adjusting seat positions to allow passengers to recline more comfortably has become a new direction for enhancing comfort.

[0003] In existing technologies, zero-gravity seats are usually equipped with electric headrests. When the zero-gravity seat is unfolded, the headrest automatically adjusts its position as the seat unfolds, so that the occupant's head fits the headrest. This headrest structure has a high cost, and regulations have requirements for the minimum use position of the headrest. The downward adjustment range of the headrest position during normal vehicle operation is limited, which cannot meet the usage requirements.

[0004] Chinese Patent Application No. 202021409840.0 discloses an adaptive contour car headrest, comprising: a headrest shell, with a headrest cavity formed inside the headrest shell, and several connecting blocks arranged laterally inside the headrest cavity, each connecting block having a connecting hole; several support blocks, each support block being movably inserted into a corresponding connecting hole, and each support block having a rack; several adjusting rods, each adjusting rod being movably inserted longitudinally into the headrest shell, and each adjusting rod having a movably engaged block at its lower end, each engaging block being located inside the headrest cavity and engaging with a corresponding rack; and a headrest cover, which wraps around the headrest shell, with the end of each support block connected to the inner side of the headrest cover; when the engaging block disengages from the rack, pressing the headrest cover can move the support blocks within the connecting holes.

[0005] The aim is to provide an improved zero-gravity adaptive adjustable headrest, particularly regarding how to increase the downward adjustment range of the headrest position. Summary of the Invention

[0006] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a zero-gravity adaptive adjustable headrest, the purpose of which is to increase the downward adjustment range of the headrest position.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a zero-gravity adaptive adjustable headrest, including a headrest body disposed on a sliding mechanism, a guide mechanism disposed on the headrest body, a limiting member disposed on the sliding mechanism, and a gravity ball disposed on the guide mechanism for limiting the limiting member when the headrest body is in a first position and is movable. The gravity ball is configured such that after being separated from the limiting member, the headrest body can move downward from the first position to the second position.

[0008] The guiding mechanism is provided with a guide groove to guide the movement of the gravity ball.

[0009] The guide groove is V-shaped.

[0010] The guiding mechanism includes a guiding element, which is connected to the headrest body, and the guiding groove is disposed on the guiding element.

[0011] The guiding element has an internal V-shaped structure.

[0012] The guiding mechanism also includes a cover plate disposed on the guiding element and used to limit the position of the gravity ball.

[0013] The cover plate includes a first limiting part and a second limiting part connected to each other, with the second limiting part embedded in the guide groove.

[0014] The first limiting part and the second limiting part are V-shaped structures.

[0015] The cover plate also includes a third limiting part connected to the second limiting part. The third limiting part is embedded in the guide groove and is located between the gravity ball and the headrest body.

[0016] The present invention also provides a vehicle including the aforementioned zero-gravity adaptive adjustable headrest.

[0017] The zero-gravity adaptive adjustable headrest of the present invention allows the gravity ball to slide and avoid the obstruction point while the seat unfolds in zero gravity, enabling the headrest to slide downward and increasing the downward adjustment range of the headrest position. This structure can reduce costs and improve the comfort and experience of using the seat. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the zero-gravity adaptive adjustable headrest of the present invention in the first position;

[0019] Figure 2 This is a schematic diagram of the zero-gravity adaptive adjustable headrest of the present invention in the first position;

[0020] Figure 3 This is a partial structural diagram of the zero-gravity adaptive adjustable headrest of the present invention in the first position;

[0021] Figure 4 This is a partial structural diagram of the zero-gravity adaptive adjustable headrest of the present invention in the second position;

[0022] Figure 5 This is a schematic diagram of the headrest body;

[0023] Figure 6 This is a schematic diagram of the structure after the cover plate and guide elements are assembled;

[0024] Figure 7 This is a schematic diagram of the structure after the fixed base and the limiting component are assembled;

[0025] Figure 8 This is a structural schematic diagram of the cover plate;

[0026] Figure 9 This is another structural schematic diagram of the cover plate;

[0027] Figure 10 It's an exploded view of the headrest from a first-person perspective;

[0028] Figure 11 It's an exploded view of the headrest from a second-person perspective;

[0029] Figure 12 This is a schematic diagram of the structure of the headrest foam;

[0030] Figure 13 This is a schematic diagram of the headrest frame;

[0031] Figure 14 This is a schematic diagram of the headrest base structure;

[0032] Figure 15 This is a structural diagram of the ventilation system;

[0033] Figure 16 This is a structural diagram showing the connection between the ventilation mechanism and the wiring harness assembly;

[0034] Figure 17 This is a schematic diagram of the ventilation mechanism connected to the headrest frame;

[0035] Figure 18 This is a schematic diagram of the wind-blocking layer;

[0036] Figure 19 This is a structural diagram of the headrest back cover;

[0037] The markings in the above figures are as follows: 1. Headrest body; 2. Fixed base; 3. Guide rod; 4. Guide element; 5. Cover plate; 501. First front limiting section; 502. First rear limiting section; 503. Second front limiting section; 504. Second rear limiting section; 505. Third limiting part; 6. Limiting component; 7. Gravity ball; 8. Guide groove; 9. Headrest foam; 10. Headrest base; 11. Headrest frame; 12. Ventilation mechanism; 13. Headrest rear cover; 14. Windproof layer; 15. Connecting through hole; 16. Individual through hole; 17. Embedded recess; 18. Ventilation channel; 19. Ventilation hole; 20. Wiring harness assembly; 21. Individual recess; 22. Connecting recess; 23. Air duct recess; 24. Through hole group; 25. Ventilation hole. Detailed Implementation

[0038] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," and similar expressions used in this document are for illustrative purposes only.

[0040] It should be noted that in the following embodiments, the terms "first," "second," and "third" do not represent an absolute distinction in structure and / or function, nor do they represent the order of execution; they are merely for the convenience of description.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] like Figures 1 to 8As shown, the present invention provides a zero-gravity adaptive adjustable headrest, including a headrest body 1 disposed on a sliding mechanism, a guide mechanism disposed on the headrest body 1, a limiting member 6 disposed on the sliding mechanism, and a gravity ball 7 disposed on the guide mechanism for limiting the limiting member 6 when the headrest body 1 is in a first position and is movable. The gravity ball 7 is configured such that after being separated from the limiting member 6, the headrest body 1 can move downward from the first position to a second position.

[0043] The guiding mechanism is provided with a guide groove 8 to guide the movement of the gravity ball 7.

[0044] The guide groove 8 is V-shaped.

[0045] The guiding mechanism includes a guiding element 4, which is connected to the headrest body 1, and the guiding groove 8 is disposed on the guiding element 4.

[0046] The guide element 4 has an internal V-shaped structure.

[0047] The guiding mechanism also includes a cover plate 5 disposed on the guiding element 4 and used to limit the gravity ball 7.

[0048] The cover plate 5 includes a first limiting part and a second limiting part connected to each other, with the second limiting part embedded in the guide groove 8.

[0049] The first limiting part and the second limiting part are V-shaped structures.

[0050] The cover plate 5 also includes a third limiting part 505 connected to the second limiting part. The third limiting part 505 is embedded in the guide groove 8 and is located between the gravity ball 7 and the headrest body 1.

[0051] The present invention also provides a vehicle including the aforementioned zero-gravity adaptive adjustable headrest.

[0052] Example 1

[0053] Firstly, such as Figures 1 to 8 As shown, this embodiment of the invention provides a zero-gravity adaptive adjustable headrest, which is used to install on a seat in a vehicle to achieve a zero-gravity state. The zero-gravity adaptive adjustable headrest includes a headrest body 1 disposed on a sliding mechanism, a guide mechanism disposed on the headrest body 1, a limiting member 6 disposed on the sliding mechanism, and a gravity ball 7 disposed on the guide mechanism for limiting the limiting member 6 when the headrest body 1 is in a first position. The gravity ball 7 is configured such that after separating from the limiting member 6, the headrest body 1 can move downward from the first position to a second position.

[0054] Specifically, such as Figure 1 and Figure 2 As shown, the sliding mechanism mainly includes a guide rod 3 and a fixed base 2. A limiting member 6 is installed on the fixed base 2, which is mounted on the seat back. The fixed base 2 is sleeved on the guide rod 3, and the guide rod 3 is fixedly connected to the headrest body 1. The headrest body 1 is used for the head of the occupant to lean against. When the headrest body 1 moves relative to the fixed base 2, the distance between the headrest body 1 and the seat back can be adjusted. During this process, the headrest body 1 drives the guide rod 3 to slide on the fixed base 2. The distance between the headrest body 1 and the seat back in the first position is greater than the distance between the headrest body 1 and the seat back in the second position.

[0055] like Figures 1 to 8 As shown, the guide mechanism is provided with a guide groove 8 to guide the movement of the gravity ball 7. The guide groove 8 is V-shaped and includes a first groove and a second groove, which are connected. The length direction of the first groove and the length direction of the second groove form an obtuse angle. The first groove is located between the second groove and the headrest body 1. When the headrest body 1 is in the first position, the gravity ball 7 is located in the first groove and contacts the top of the limiting member 6, which can prevent the headrest body 1 from moving downward and keep the headrest body 1 in the first position. When the seat back is tilted backward, the gravity ball 7 can roll from the first groove to the second groove, and the gravity ball 7 separates from the top of the limiting member 6. At this time, the limiting member 6 can no longer prevent the headrest body 1 from moving downward, and the headrest body 1 can move downward under its own weight. The headrest body 1 automatically moves from the first position (the headrest body 1 in this position is in the unlocked state) to the second position.

[0056] like Figures 1 to 8 As shown, the guiding mechanism includes a guiding element 4, which is connected to the headrest body 1. A guiding groove 8 is disposed on the guiding element 4. The guiding element 4 has an internal V-shaped structure. The guiding element 4 includes a first guiding section and a second guiding section. The length direction of the first guiding section and the length direction of the second guiding section form an obtuse angle. The first guiding section is located between the second guiding section and the headrest body 1. One end of the first guiding section is fixedly connected to the headrest body 1 along its length direction, and the other end of the first guiding section is fixedly connected to one end of the second guiding section along its length direction. The other end of the second guiding section is a closed end. A first groove is disposed inside the first guiding section and extends along the entire length direction of the first guiding section. A second groove is disposed inside the second guiding section and extends along the length direction of the second guiding section. The second guiding section extends obliquely upward toward the rear side of the first guiding section.

[0057] Preferably, both the headrest body 1 and the guide element 4 are made of plastic, and the headrest body 1 and the guide element 4 are integrally injection molded, which is convenient to process and low in cost.

[0058] like Figures 1 to 8 As shown, the guiding mechanism also includes a cover plate 5 disposed on the guiding element 4 and used to limit the gravity ball 7. The cover plate 5 and the guiding element 4 are tightly fitted together. One end of the guiding element 4 in the width direction (the width direction of the guiding element 4 is parallel to the length direction of the headrest body 1 and spatially perpendicular to the length direction of the guide rod 3) is provided with an opening, and the other end of the guiding element 4 in the width direction is a closed end. The cover plate 5 is used to close the open end of the guiding element 4, so that the gravity ball 7 is kept in the guide groove 8, preventing the gravity ball 7 from falling off, improving reliability, and facilitating installation. Moreover, in the width direction, the gap between the gravity ball 7 and the cover plate 5 and the closed end of the guiding element 4 is relatively small, so that the gravity ball 7 can accurately fit with the limiting member 6.

[0059] like Figures 1 to 8 As shown, the cover plate 5 includes a first limiting part and a second limiting part connected to each other. The second limiting part is embedded in the guide groove 8, and the first limiting part is located outside the guide element 4. The first limiting part is used to control the depth of the second limiting part inserted into the guide groove 8. The second limiting part faces the closed end of the guide element 4 in the width direction.

[0060] like Figures 1 to 8As shown, the first limiting part and the second limiting part have a V-shaped structure. The first limiting part includes a first front limiting segment 501 and a first rear limiting segment 502. The length direction of the first front limiting segment 501 and the length direction of the first rear limiting segment 502 form an angle, which is an obtuse angle. The angle between the length directions of the first front limiting segment 501 and the first rear limiting segment 502 is the same as the angle between the length directions of the first guide segment and the second guide segment. The first front limiting segment 501 is located between the first rear limiting segment 502 and the headrest body 1. The cover plate 5 is mounted on the guide element 4. The first front limiting segment 501 is in contact with the surface of the first guide segment and their length directions are parallel. The first rear limiting segment 502 is in contact with the surface of the second guide segment and their length directions are parallel. The second limiting part includes a second front limiting segment 503 and a second rear limiting segment 504. The length directions of the second front limiting segment 503 and the second rear limiting segment 504 form an obtuse angle. The angle between the length directions of the second front limiting segment 503 and the second rear limiting segment 504 is the same as the angle between the length directions of the first guide segment and the second guide segment. The cover plate 5 is mounted on the guide element 4. The second front limiting segment 503 is embedded in the first groove, and the second rear limiting segment 504 is embedded in the second groove. The length direction of the second front limiting segment 503 is parallel to the length direction of the first front limiting segment 501, and the length of the second front limiting segment 503 is less than the length of the first front limiting segment 501. The length direction of the second rear limiting segment 504 is parallel to the length direction of the first rear limiting segment 502, and the length of the second rear limiting segment 504 is less than the length of the first rear limiting segment 502. The width of the second front limiting segment 503 is smaller than the width of the first front limiting segment 501, and the width of the second rear limiting segment 504 is smaller than the width of the first rear limiting segment 502. The widths of the first front limiting segment 501 and the first rear limiting segment 502 are the same, as are the widths of the second front limiting segment 503 and the second rear limiting segment 504. The width direction of the first front limiting segment 501 is perpendicular to its length and thickness directions, the width direction of the first rear limiting segment 502 is perpendicular to its length and thickness directions, the width direction of the second front limiting segment 503 is perpendicular to its length and thickness directions, and the width direction of the second rear limiting segment 504 is perpendicular to its length and thickness directions. The thickness directions of the first front limiting section 501, the first rear limiting section 502, the second front limiting section 503, and the second rear limiting section 504 are parallel to the thickness direction of the cover plate 5. The first limiting part and the second limiting part are arranged sequentially along the thickness direction of the cover plate 5. The thickness direction of the cover plate 5 is parallel to the length direction of the headrest body 1.

[0061] like Figures 1 to 8As shown, the cover plate 5 also includes a third limiting part 505 connected to the second limiting part. The third limiting part 505 is embedded in the guide groove 8 and is located between the gravity ball 7 and the headrest body 1. The second limiting part is located between the third limiting part 505 and the first limiting part. The third limiting part 505 is fixedly connected to the second front limiting section 503 and is inserted into the first groove. The third limiting part 505 is used to limit the initial position of the gravity ball 7. When the headrest body 1 is in the first position, the gravity ball 7 is in contact with the third limiting part 505. The third limiting part 505 prevents the gravity ball 7 from rolling toward the position of the headrest body 1, ensuring that the gravity ball 7 and the limiting member 6 always remain in contact.

[0062] like Figures 1 to 4 and Figure 7 As shown, the limiting member 6 is fixedly installed on the top of the fixed base 2, and the guide element 4 is provided with a clearance hole for the limiting member 6 to pass through. After the limiting member 6 passes through the clearance hole, it can contact the gravity ball 7 in the upper guide groove 8.

[0063] When the seat unfolds in zero gravity, the backrest and headrest tilt backward, and the gravity ball 7 rolls from the first groove toward the second groove. After the gravity ball 7 separates from the top of the limiting member 6, the limiting member 6 can no longer prevent the headrest body 1 from moving downward. The headrest body 1 can move downward under its own gravity and automatically moves from the first position to the second position. The limiting member 6 passes upward through the clearance hole.

[0064] The cooperation between the cover plate 5 and the guide element 4, as well as the gravity ball 7 and the limiting member 6, in the above-described structure increases the downward adjustment stroke of the headrest. This automatic adaptability improves passenger comfort and convenience, eliminating the need for manual headrest adjustment. Furthermore, this implementation method is structurally simple, easy to manufacture, and reduces costs. Precise design of the guide groove 8 and the shape of the cover plate 5 ensures accurate matching between the gravity ball 7 and the limiting member 6. This precise control makes the transition of the headrest between different positions smoother and more reliable.

[0065] Secondly, embodiments of the present invention also provide a vehicle including a zero-gravity adaptive adjustable headrest with the above-described structure, the zero-gravity adaptive adjustable headrest being mounted on the vehicle's seat. The specific structure of this zero-gravity adaptive adjustable headrest can be found in [reference needed]. Figures 1 to 9 The details will not be elaborated further here. Since the vehicle of the present invention includes the zero-gravity adaptive adjustable headrest of the above embodiments, it has all the advantages of the aforementioned zero-gravity adaptive adjustable headrest.

[0066] Example 2

[0067] like Figures 10 to 19As shown, in the zero-gravity adaptive adjustable headrest of this embodiment of the invention, a ventilation mechanism 12 is provided in the headrest body, enabling the headrest to have a ventilation function, facilitating airflow to cool the head of passengers and improving the comfort of the head area of ​​passengers in the vehicle. The ventilation mechanism 12 is mainly used for supplying air, facilitating the airflow operation to the head of passengers in the headrest body area.

[0068] The headrest body is provided with a ventilation channel 18; the ventilation channel 18 mainly serves as a connection, so that the air blown out by the ventilation mechanism 12 can pass through the headrest body and blow air onto the head of the passenger.

[0069] Meanwhile, in this embodiment of the invention, the ventilation mechanism 12 is connected to the headrest body; the ventilation mechanism 12 can supply air into the ventilation channel 18; the ventilation mechanism 12 is detachably connected to the headrest body, and the ventilation mechanism 12 can be a motor plus a fan, or a conventional ventilation pump structure. After the mechanism is started, it can blow out gas, which is convenient for blowing air into the headrest body area.

[0070] Furthermore, in this embodiment of the invention, the headrest body includes a headrest frame 3 and a foam matrix connected to the headrest frame 3; the headrest frame 3 provides good support and ensures the overall structural strength of the headrest body, while the foam matrix is ​​made of soft material, which can provide soft support for the head of the passenger and ensure the comfort of the passenger.

[0071] In this embodiment of the invention, the ventilation mechanism 12 is arranged on the headrest frame 11. This arrangement facilitates the installation and arrangement of the ventilation mechanism 12 on the headrest body.

[0072] Meanwhile, in this embodiment of the invention, the foamed substrate and the ventilation mechanism 12 are arranged on opposite sides of the headrest frame 11; the headrest frame 11 is provided with ventilation holes 19; the foamed substrate is provided with ventilation channels 18, and the ventilation holes 19 are connected to the ventilation channels 18; the gas provided by the ventilation mechanism 12 passes through the ventilation holes 19 and enters the ventilation channels 18 of the foamed substrate, and the gas can be discharged through the channels, thereby realizing that the gas passes through the headrest body and blows to the head of the passenger.

[0073] Furthermore, in this embodiment of the invention, the foamed substrate includes a headrest substrate 10 and a headrest foam 9. Both the headrest substrate 10 and the headrest foam 9 can be made of foamed material. The headrest substrate 10 has an overall arc-shaped block structure, while the headrest foam 9 has a rectangular block structure. This arrangement facilitates contact with the head of the passenger, ensures the contact area between the foamed substrate and the head of the passenger, and ensures the comfort of the passenger's head.

[0074] In addition, in this embodiment of the invention, the ventilation channel 18 is disposed on the headrest foam body 9, and the headrest foam body 9 is connected to the headrest frame 11 through the headrest base 10; the headrest base 10 is provided with a through hole 15; the through hole 15 is connected to the ventilation hole 19; in this embodiment of the invention, based on the above design, the connection of the headrest foam body 9, the headrest base 10 and the headrest frame 11 is facilitated. In actual connection, the headrest base 10 is fixed on the headrest frame 11. The connection methods are diverse and can be selected according to needs, such as adhesive bonding. In addition, in this embodiment of the invention, the through hole 15 and the ventilation hole 19 are arranged opposite to each other, which facilitates the gas supplied by the subsequent ventilation mechanism 12 to enter the ventilation channel 18 on the headrest foam body 9; thereby facilitating the subsequent air venting operation.

[0075] Furthermore, in this embodiment of the invention, the headrest foam 9 is embedded in the headrest base 10; the headrest base 10 is provided with an embedded groove 17, and the headrest foam 9 is arranged in the embedded groove 17; the embedded groove 17 provided on the headrest base 10 serves as a storage function, facilitating the placement and arrangement of the headrest foam 9 on the headrest base 10. In addition, in this embodiment of the invention, the embedded groove 17 is located in the central region of the headrest base 10; this allows the inner sidewall of the embedded groove 17 to define the circumferential position of the headrest foam 9, and the headrest foam 9 can be bonded to the headrest base 10 with adhesive; based on this arrangement, the stability of the headrest foam 9's arrangement within the headrest base 10 is ensured.

[0076] Furthermore, in this embodiment of the invention, the ventilation channel 18 includes a duct groove 23 and a through hole group 24 disposed on the headrest foam body 9; the duct groove 23 and the through hole group 24 are interconnected; the through hole group 24 is arranged on the side of the headrest foam body 9 away from the headrest base 10, that is, on the side closer to the passenger during subsequent use, while the duct groove 23 is close to the headrest base 10. During subsequent use, the ventilation mechanism 12 supplies gas into the duct groove 23, and the gas then flows from the duct groove 23 to the through hole group 24, and then is exhausted through the through hole group 24 to blow on the passenger's head; thereby achieving ventilation and cooling of the passenger's head.

[0077] In this embodiment of the invention, the depth of the air duct groove 23 is less than the thickness of the headrest foam 9. This arrangement makes the air duct groove 23 equivalent to being located on one side of the headrest foam 9, which can ensure the flatness of the headrest foam 9 on the side close to the passenger as much as possible, and ensure the comfort of the passenger.

[0078] In addition, in this embodiment of the invention, the through-hole group 24 includes a plurality of individual through holes 16, each of which extends from the air duct groove 23 away from the headrest foam body 9. The plurality of individual through holes 16 ensures the ventilation of the headrest foam body 9. In this embodiment of the invention, the air duct groove 23 and the plurality of individual through holes 16 work together to ensure that the air blown out by the ventilation mechanism 12 can pass through and reach the head area of ​​the passenger, thereby improving the comfort of the passenger.

[0079] Furthermore, in this embodiment of the invention, the air duct trough 23 includes multiple parallel and spaced individual troughs 21, each individual trough 21 being part of the air duct trough 23. The individual troughs 21 are inclined, and adjacent two or more individual troughs 21 are connected by at least one connecting trough 22. This arrangement allows the headrest foam 9 to form a grid-like structure near the foam matrix, facilitating subsequent gas flow. In addition, the connecting trough 22 serves as a connection, allowing the gas supplied by the ventilation mechanism 12 to diffuse through one or more individual troughs 21 after entering them, ensuring gas distribution in each individual trough 21 as much as possible. This arrangement increases the headrest's air outlet area, which is beneficial for blowing air onto multiple areas of the passenger's head, achieving cooling of more areas of the passenger's head.

[0080] In this embodiment of the invention, the individual sink 21 is set at a 45-degree angle to the horizontal plane, and the connecting sink 22 is arranged intersecting with the individual sink 21. Generally, it is required that the connecting sink 22 and the individual sink 21 are set perpendicular to each other. This arrangement can achieve the connection between the individual sinks 21 with the shortest distance. At the same time, at the intersection of the connecting sink and the individual sink 21, a rounded surface is required for transition. This arrangement can reduce the running resistance of gas in the air duct sink 23 and help ensure the diffusion range of gas in the headrest body.

[0081] Furthermore, in this embodiment of the invention, a wind-blocking layer 14 is provided on the side of the headrest foam 9 near the headrest base 10. In this embodiment of the invention, the wind-blocking layer 14 serves as a covering and blocking function. In subsequent use, it mainly covers the air duct groove 23 to prevent air leakage and other problems on the side of the air duct groove 23 near the headrest base 10. In this embodiment of the invention, the wind-blocking layer 14 can be made of non-woven fabric. The wind-blocking layer 14 is attached to the headrest foam 9. The two can be connected by means of adhesive bonding. In this embodiment of the invention, the wind-blocking layer 14 covers the air duct groove 23, making the air duct groove 23 equivalent to an internal groove structure, which facilitates the regional limitation of the gas entering the headrest foam 9 and ensures the air output of the headrest.

[0082] In addition, in this embodiment of the invention, the wind-blocking layer 14 is provided with ventilation holes 25; the ventilation holes 25, the connecting holes 15 and the ventilation holes 19 are connected in sequence; this arrangement facilitates the entry of the gas supplied by the ventilation mechanism 12 into the headrest foam body 9.

[0083] Furthermore, in this embodiment of the invention, the headrest frame 11 is a plastic frame; the plastic frame can reduce the overall weight of the headrest while ensuring the main body of the headrest.

[0084] In this embodiment of the invention, the headrest also includes a headrest back cover 5; the headrest back cover 5 is hollow to form a placement cavity; the headrest back cover 5 serves as a shield and protection, and at the same time, it can form an internal cavity to facilitate the placement of the headrest body; the headrest back cover 5 is connected to the headrest frame 11; the two can be connected by bolts or by snap-fit.

[0085] Furthermore, in this embodiment of the invention, the ventilation mechanism 12 includes a ventilation pump. The operation of the ventilation pump can supply air to the headrest body. The ventilation pump includes a pump housing, which facilitates the installation of the ventilation pump on the headrest frame 11.

[0086] In addition, in this embodiment of the invention, the ventilation pump is connected to the headrest frame 11 by a fastening component. The fastening component facilitates the connection between the ventilation pump and the headrest frame 11. Specifically, in this embodiment of the invention, the fastening component includes a support column provided on the headrest frame 11; the pump housing overlaps the support column; and subsequently, bolts are passed through the pump housing and connected to the support column. This arrangement facilitates the installation and use of the ventilation pump on the headrest frame 11.

[0087] In addition, in this embodiment of the invention, the ventilated headrest assembly includes two ventilation mechanisms 12, which are spaced apart on the headrest frame 11. The ventilation pumps in the two ventilation mechanisms 12 are connected through the same wiring harness assembly 20. This arrangement can reduce the use of the wiring harness assembly 20 while ensuring the air supply. The two ventilation mechanisms 12 disclosed in this embodiment of the invention are symmetrically arranged on the headrest frame 11, and the wiring harness assembly 20 is arranged on the headrest frame 11 through wiring harness clips. The headrest frame 11 in this embodiment of the invention has an overall arc-shaped structure, so the two ventilation mechanisms 12 are arranged at the upper end of the headrest frame 11, and the air outlet directions of the two ventilation mechanisms 12 are intersecting. This arrangement can better ensure the diffusion of gas in the air duct groove 23.

[0088] In this embodiment of the invention, the headrest foam 9 and the headrest base 10 are mainly made of foamed material, and the headrest frame 11 is mainly supported by plastic. Generally, high-strength plastic material is selected, which has the characteristics of lightweight and high strength. The headrest frame 11 is required to effectively support the headrest and its accessories to ensure structural stability.

[0089] In this embodiment of the invention, the headrest foam 9 and the headrest base 10 are made of foam material; in this embodiment of the invention, the texture on the headrest foam 9 can adopt a variety of shapes, such as wave shape, grid shape, honeycomb shape, etc., and the ventilation channel 18 can be arranged through the ingenious design of these textures, and different textures can be adopted according to different shapes.

[0090] The mesh-like pattern disclosed in this embodiment of the invention is mainly formed by ventilation channels 18, which is formed by the intersecting arrangement of multiple individual sinks 21 and connected sinks 22. The mesh-like pattern forms multiple small channels, increasing the air circulation speed and further improving the heat dissipation effect; while the textured foam helps to reduce the pressure points between the head and the headrest, increasing the amount of head intrusion of the occupant and improving comfort.

[0091] The mesh pattern possesses the following characteristics;

[0092] 1. Excellent ventilation: The grid pattern, with its multiple small channels arranged in an interlaced manner, forms an effective airflow path; hot air can be quickly exhausted through these small channels, achieving efficient heat dissipation.

[0093] 2. Uniform pressure distribution: The mesh structure can evenly distribute pressure on the head, reduce single-point pressure, and improve riding comfort; uniform pressure distribution can also reduce fatigue caused by long-term riding.

[0094] 3. High structural strength: The interlaced grid pattern has high strength and stability, which can provide sufficient support while ensuring ventilation and enhancing the overall durability of the headrest.

[0095] Adaptable to various head shapes: The grid pattern can adaptively adjust to different head shapes, providing a better fit and support, further enhancing passenger comfort.

[0096] Compared with other texture shapes:

[0097] Wavy texture: While wavy textures offer advantages in ventilation and comfort, they are inferior to grid textures in terms of uniform pressure distribution and structural strength. Furthermore, the manufacturing process for wavy textures is relatively complex, increasing costs.

[0098] Honeycomb pattern: Honeycomb patterns excel in strength and lightweight design, but their complex structure may increase manufacturing difficulty and cost. Additionally, honeycomb patterns are slightly inferior to grid patterns in terms of uniform pressure distribution.

[0099] Considering all the above factors, choosing a grid pattern as the preferred option not only significantly improves ventilation and riding comfort, but also ensures the structural strength of the headrest and the controllability of manufacturing costs, making it an ideal choice.

[0100] In addition, because the ventilation channel 18 is relatively wide, this embodiment of the invention also requires that a wind-blocking layer 14 be pasted on the headrest foam 9. The wind-blocking layer 14 is mainly non-woven fabric. In use, the non-woven fabric is pasted on the headrest foam 9 to seal the ventilation channel 18 to prevent air leakage. When installing the headrest foam 9, the two reserved 40mm ventilation holes 25 are aligned with the ventilation holes 19 on the headrest frame 11. Specifically, the non-woven fabric is required to have two 40mm diameter circular ventilation holes 25 at the ventilation mechanism 12 position.

[0101] Ventilation mechanism 12: Built-in small suction mechanism; the mechanism is fastened to the headrest plastic with screws, and features low noise and high efficiency; the ventilation mechanism 12 is connected to the seat power supply through a wiring harness, and the user can control the ventilation effect through a switch.

[0102] During installation, the headrest frame 11 is first assembled with the ventilation mechanism 12 and the wiring harness to form a first small assembly. The non-woven fabric and headrest foam 9 are then connected and glued onto the headrest base 10 to form a second small assembly. The first small assembly, the second small assembly, the cover, and the headrest back cover 5 are then assembled into a headrest. The headrest is then installed on the seat and the wiring harness is connected. The occupant can start the ventilation mechanism 12 by turning on the switch to use the headrest.

[0103] Secondly, embodiments of the present invention also provide a vehicle including a zero-gravity adaptive adjustable headrest with the above-described structure, the zero-gravity adaptive adjustable headrest being mounted on the vehicle's seat. The specific structure of this zero-gravity adaptive adjustable headrest can be found in [reference needed]. Figures 1 to 19 The details will not be elaborated further here. Since the vehicle of the present invention includes the zero-gravity adaptive adjustable headrest of the above embodiments, it has all the advantages of the aforementioned zero-gravity adaptive adjustable headrest.

[0104] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A zero-gravity adaptive adjustable headrest, comprising a headrest body mounted on a sliding mechanism, characterized in that: It also includes a guide mechanism disposed on the headrest body, a limiting member disposed on the sliding mechanism, and a gravity ball disposed on the guide mechanism for limiting the limiting member when the headrest body is in the first position and is movable. The gravity ball is configured to allow the headrest body to move downward from the first position to the second position after being separated from the limiting member. The guiding mechanism is provided with a guide groove that guides the movement of the gravity ball, and the guide groove is V-shaped; The guide groove includes a first groove and a second groove, which are connected. The length direction of the first groove and the length direction of the second groove form an angle, which is an obtuse angle. The first groove is located between the second groove and the headrest body. When the headrest body is in the first position, the gravity ball is located in the first groove and contacts the top of the limiting member, which can prevent the headrest body from moving downward and keep the headrest body in the first position. When the seat back is tilted backward, the gravity ball can roll from the first groove to the second groove and separate from the top of the limiting member. At this time, the limiting member can no longer prevent the headrest body from moving downward, and the headrest body can move downward under its own weight. The headrest body automatically moves from the first position to the second position. The sliding mechanism includes a guide rod and a fixed base. The fixed base is installed on the back of the seat and is sleeved on the guide rod. The guide rod is fixedly connected to the headrest body. The limiting member is fixedly installed on the top of the fixed base. The guide element is provided with a clearance hole for the limiting member to pass through. After the limiting member passes through the clearance hole, it can contact the gravity ball in the upper guide groove.

2. The zero-gravity adaptive adjustable headrest according to claim 1, characterized in that: The guiding mechanism includes a guiding element, which is connected to the headrest body, and the guiding groove is disposed on the guiding element.

3. The zero-gravity adaptive adjustable headrest according to claim 2, characterized in that: The guiding mechanism also includes a cover plate disposed on the guiding element and used to limit the position of the gravity ball.

4. The zero-gravity adaptive adjustable headrest according to claim 3, characterized in that: The cover plate includes a first limiting part and a second limiting part connected to each other, with the second limiting part embedded in the guide groove.

5. The zero-gravity adaptive adjustable headrest according to claim 4, characterized in that: The first limiting part and the second limiting part are V-shaped structures.

6. The zero-gravity adaptive adjustable headrest according to claim 4, characterized in that: The cover plate also includes a third limiting part connected to the second limiting part. The third limiting part is embedded in the guide groove and is located between the gravity ball and the headrest body.

7. A vehicle, characterized in that: Includes the zero-gravity adaptive adjustable headrest as described in any one of claims 1 to 6.

Images