Zero-gravity self-adaptive adjustment headrest and vehicle

Abstract

The invention discloses a zero-gravity self-adaptive adjustment headrest which comprises a headrest body arranged on a sliding mechanism, a guide mechanism arranged on the headrest body, a limiting piece arranged on the sliding mechanism and a gravity ball which is used for limiting the limiting piece when the headrest body is located at a first position and is movably arranged on the guide mechanism. After the gravity ball is separated from the limiting piece, the headrest body can move downwards from the first position to the second position. According to the zero-gravity self-adaptive adjusting headrest, a seat is unfolded in a zero-gravity mode, meanwhile, the gravity ball slides to avoid the blocking point, the headrest slides downwards, the downward adjusting stroke of the position of the headrest is increased, the cost can be reduced through the structure, and the using comfort and experience of the seat are improved. The invention further discloses a vehicle.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a zero-gravity adaptive adjustment headrest and a vehicle. Background Art

[0002] The zero-gravity seat in the car improves the riding comfort of the passengers, and is currently available in some cars. When people travel, they pay more and more attention to riding comfort. Riding comfort is not only about the size of the space, but also the comfort of the seat, the creation of seat comfort and the diversification of seat functions are also crucial. Therefore, how to adjust the seat posture so that the passengers have a more comfortable lying position to improve comfort has become a new direction.

[0003] In the prior art, zero-gravity seats are usually equipped with electric headrests. When the zero-gravity seat is unfolded, the headrest position is automatically adjusted as the seat is unfolded so that the occupant's head fits against the headrest. This headrest structure has a higher cost. At the same time, regulations have requirements for the minimum usage position of the headrest. The downward adjustment range of the headrest position during normal vehicle driving is limited and cannot meet the usage requirements.

[0004] The Chinese patent with application number 202021409840.0 discloses an automobile headrest with an adaptive contour, comprising: a headrest shell, a headrest inner cavity is formed in the headrest shell, a plurality of connecting blocks are horizontally arranged in the headrest inner cavity, and connecting holes are opened in the connecting blocks; a plurality of support blocks, each of which is movably inserted in the corresponding connecting hole, and each support block is provided with a rack; a plurality of adjusting rods, each of which is longitudinally movably inserted on the headrest shell, and each adjusting rod has an engaging block movably provided at the lower end, each engaging block is located in the headrest inner cavity and movably engaged with the corresponding rack; a headrest cover, which is wrapped on the headrest shell, and each end of the support block is connected to the inner side of the headrest cover; when the engaging block is disengaged from the rack, pressing the headrest cover can drive the support block to move in the connecting hole.

[0005] It is desirable to provide an improved zero-gravity adaptive headrest, particularly with regard to how to increase the downward adjustment travel of the headrest position. Summary of the invention

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

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a zero-gravity adaptive adjustable headrest, including a headrest body arranged on a sliding mechanism, a guide mechanism arranged on the headrest body, a limit piece arranged on the sliding mechanism, and a gravity ball movably arranged on the guide mechanism for limiting the limit piece when the headrest body is in a first position, the gravity ball being arranged so that after being separated from the limit piece, the headrest body can move downward from the first position to the second position.

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

[0009] The guide groove is V-shaped.

[0010] The guide mechanism comprises a guide element, the guide element is connected to the headrest body, and the guide groove is arranged on the guide element.

[0011] The guide element is a V-shaped structure in the interior.

[0012] The guide mechanism also includes a cover plate which is arranged on the guide element and is used to limit the gravity ball.

[0013] The cover plate comprises a first limiting portion and a second limiting portion connected to each other, and the second limiting portion is embedded in the guide groove.

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

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

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

[0017] The zero-gravity adaptive headrest of the present invention can realize the sliding of the headrest downwards by the gravity ball when the seat is unfolded in zero gravity, thereby increasing the downward adjustment stroke of the headrest position. This structure can reduce costs and improve the comfort and experience of seat use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the zero-gravity adaptive adjustment headrest of the present invention when it is in the first position;

[0019] Figure 2 is a structural schematic diagram of the zero-gravity adaptive adjustment headrest of the present invention when it is in the first position;

[0020] Figure 3 is a schematic diagram of the local structure of the zero-gravity adaptive headrest of the present invention when it is in the first position;

[0021] Figure 4 is a schematic diagram of the local structure of the zero-gravity adaptive headrest of the present invention when it is in the second position;

[0022] Figure 5 It is a structural diagram of the headrest body;

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

[0024] Figure 7 It is a schematic diagram of the structure after the fixed base and the limiter are assembled;

[0025] Figure 8 It is a schematic diagram of the structure of the cover;

[0026] Fig. 9 is another structural schematic diagram of the cover plate;

[0027] Fig.10 This is an exploded view of the headrest from the first person perspective;

[0028] Fig.11 This is an exploded view of the headrest from the second perspective;

[0029] Fig.12 is a schematic diagram of the structure of a headrest foam body;

[0030] Fig.13 It is a schematic diagram of the structure of the headrest frame;

[0031] Fig.14 is a schematic diagram of the structure of a headrest base;

[0032] Fig.15 It is a structural diagram of the ventilation mechanism;

[0033] Fig.16 It is a schematic diagram of the structure when the ventilation mechanism is connected to the wiring harness assembly;

[0034] Fig.17 It is a schematic diagram of the structure in which the ventilation mechanism is connected to the headrest frame;

[0035] Fig.18 It is a schematic diagram of the structure of the wind blocking layer;

[0036] Fig.19 It is a schematic diagram of the structure of the rear trim cover of the headrest;

[0037] The marks in the above figures are: 1. headrest body; 2. fixed base; 3. guide rod; 4. guide element; 5. cover plate; 501. first front limit section; 502. first rear limit section; 503. second front limit section; 504. second rear limit section; 505. third limit section; 6. limit member; 7. gravity ball; 8. guide groove; 9. headrest foam; 10. headrest base; 11. headrest frame; 12. ventilation mechanism; 13. headrest rear decorative cover; 14. wind blocking layer; 15. connecting through hole; 16. single through hole; 17. embedded sink; 18. ventilation channel; 19. ventilation hole; 20. wiring harness assembly; 21. single sink; 22. connecting sink; 23. air duct sink; 24. through hole group; 25. ventilation hole. DETAILED DESCRIPTION

[0038] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

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

[0040] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] like Figures 1 to 8As shown, the present invention provides a zero-gravity adaptive adjustable headrest, comprising a headrest body 1 arranged on a sliding mechanism, a guide mechanism arranged on the headrest body 1, a limiter 6 arranged on the sliding mechanism, and a gravity ball 7 movably arranged on the guide mechanism for limiting the limiter 6 when the headrest body 1 is in a first position, wherein the gravity ball 7 is arranged to be separated from the limiter 6 so that the headrest body 1 can move downward from the first position to the second position.

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

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

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

[0046] The guide element 4 is a V-shaped structure in the interior.

[0047] The guide mechanism further includes a cover plate 5 which is arranged on the guide element 4 and is used to limit the position of the gravity ball 7 .

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

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

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

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

[0052] Embodiment 1

[0053] First, as Figures 1 to 8 As shown, an embodiment of the present invention provides a zero-gravity adaptive headrest, which is used to be installed on a seat on a vehicle that can achieve a zero-gravity state. The zero-gravity adaptive headrest includes a headrest body 1 arranged on a sliding mechanism, a guide mechanism arranged on the headrest body 1, a limiter 6 arranged on the sliding mechanism, and a gravity ball 7 movably arranged on the guide mechanism for limiting the limiter 6 when the headrest body 1 is in a first position. The gravity ball 7 is arranged to be separated from the limiter 6 so that the headrest body 1 can move downward from the first position to the second position.

[0054] Specifically, if Figure 1 and Figure 2 As shown, the sliding mechanism mainly includes a guide rod 3 and a fixed base 2, a stopper 6 is installed on the fixed base 2, the fixed base 2 is installed on the seat back, the fixed base 2 is sleeved on the guide rod 3, the guide rod 3 is fixedly connected to the headrest body 1, the headrest body 1 is used for the head of the occupant in the car to lean on, when the headrest body 1 moves relative to the fixed base 2, the headrest body 1 can adjust the distance between the headrest body 1 and the seat back, in 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, a guide groove 8 for guiding the gravity ball 7 to move is provided on the guide mechanism. The guide groove 8 is V-shaped, and includes a first groove and a second groove. The first groove and the second groove are connected, and there is an angle between the length direction of the first groove and the length direction of the second groove, and the angle is 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 the gravity ball 7 contacts the top of the stopper 6, which can prevent the headrest body 1 from moving downward, so that the headrest body 1 remains in the first position; when the seat back tilts backward, the gravity ball 7 can roll from the first groove to the second groove, and the gravity ball 7 is separated from the top of the stopper 6. At this time, the stopper 6 cannot prevent the headrest body 1 from moving downward, and the headrest body 1 can move downward under the action of its own gravity, and the headrest body 1 automatically moves from the first position (the headrest body 1 at this position is in an unlocked state) to the second position.

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

[0057] Preferably, the headrest body 1 and the guide element 4 are both 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 guide mechanism also includes a cover plate 5 disposed on the guide element 4 and used to limit the gravity ball 7, and the cover plate 5 is tightly matched with the guide element 4. An opening is provided at one end of the guide element 4 in the width direction (the width direction of the guide element 4 is parallel to the length direction of the headrest body 1, and is vertical to the length direction of the guide rod 3 in space), and the other end of the guide element 4 in the width direction is a closed end. The cover plate 5 is used to close the open end of the guide element 4, so that the gravity ball 7 is kept in the guide groove 8, to prevent the gravity ball 7 from falling off, to improve reliability, and to facilitate installation. In addition, in the width direction, the gap between the gravity ball 7 and the closed end of the cover plate 5 and the guide element 4 is relatively small, so that the gravity ball 7 can accurately match the limiter 6.

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

[0060] like Figures 1 to 8As shown, the first limiting portion and the second limiting portion are V-shaped structures. The first limiting portion includes a first front limiting section 501 and a first rear limiting section 502. There is an angle between the length direction of the first front limiting section 501 and the length direction of the first rear limiting section 502, and the angle is an obtuse angle. The angle between the length direction of the first front limiting section 501 and the length direction of the first rear limiting section 502 is the same as the angle between the length direction of the first guide section and the length direction of the second guide section. The first front limiting section 501 is located between the first rear limiting section 502 and the headrest body 1. The cover plate 5 is installed on the guide element 4. The first front limiting section 501 is in contact with the surface of the first guide section and the length directions of the two are parallel. The first rear limiting section 502 is in contact with the surface of the second guide section and the length directions of the two are parallel. The second limiting portion includes a second front limiting section 503 and a second rear limiting section 504. The length direction of the second front limiting section 503 and the length direction of the second rear limiting section 504 have an angle, and the angle is an obtuse angle. The size of the angle between the length direction of the second front limiting section 503 and the length direction of the second rear limiting section 504 is the same as the size of the angle between the length direction of the first guide section and the length direction of the second guide section. The cover plate 5 is installed on the guide element 4, the second front limiting section 503 is embedded in the first groove, and the second rear limiting section 504 is embedded in the second groove. The length direction of the second front limiting section 503 is parallel to the length direction of the first front limiting section 501, and the length of the second front limiting section 503 is less than the length of the first front limiting section 501. The length direction of the second rear limiting section 504 is parallel to the length direction of the first rear limiting section 502, and the length of the second rear limiting section 504 is less than the length of the first rear limiting section 502. The width of the second front limiting section 503 is smaller than that of the first front limiting section 501, and the width of the second rear limiting section 504 is smaller than that of the first rear limiting section 502. The widths of the first front limiting section 501 and the first rear limiting section 502 are the same, the widths of the second front limiting section 503 and the second rear limiting section 504 are the same, the width direction of the first front limiting section 501 is perpendicular to the length direction and thickness direction of the first front limiting section 501, the width direction of the first rear limiting section 502 is perpendicular to the length direction and thickness direction of the first rear limiting section 502, the width direction of the second front limiting section 503 is perpendicular to the length direction and thickness direction of the second front limiting section 503, and the width direction of the second rear limiting section 504 is perpendicular to the length direction and thickness direction of the second rear limiting section 504. 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, and the first limiting portion and the second limiting portion are arranged in sequence along the thickness direction of the cover plate 5, and 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 portion 505 connected to the second limiting portion, the third limiting portion 505 is embedded in the guide groove 8, the third limiting portion 505 is located between the gravity ball 7 and the headrest body 1, and the second limiting portion is located between the third limiting portion 505 and the first limiting portion. The third limiting portion 505 is fixedly connected to the second front limiting section 503, and the third limiting portion 505 is inserted into the first groove. The third limiting portion 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 portion 505, and the third limiting portion 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 maintain a contact state.

[0062] like Figures 1 to 4 and Figure 7 As shown, the limiting member 6 is fixedly arranged on the top of the fixed base 2, and an avoidance hole is arranged on the guide element 4 for the limiting member 6 to pass through. After passing through the avoidance hole, the limiting member 6 can contact the gravity ball 7 in the upper guide groove 8.

[0063] When the seat is unfolded in zero gravity, the backrest and the headrest tilt backwards, and the gravity ball 7 rolls from the first groove to the second groove. After the gravity ball 7 is separated from the top of the limiter 6, the limiter 6 cannot prevent the headrest body 1 from moving downward. The headrest body 1 can move downward under the action of its own gravity. The headrest body 1 automatically moves from the first position to the second position, and the limiter 6 passes upward through the avoidance hole.

[0064] Through the cooperation of the cover plate 5 and the guide element 4 and the gravity ball 7 and the stopper 6 of the above structure, the downward adjustment stroke of the headrest position can be increased. This automatic adaptability improves the comfort and convenience of the passengers, and there is no need to manually adjust the position of the headrest. In addition, this implementation method has a simple structure and is easy to process, which can reduce costs. By accurately designing the shape of the guide groove 8 and the cover plate 5, the accurate cooperation between the gravity ball 7 and the stopper 6 is ensured. This precise control makes the conversion of the headrest between different positions smoother and more reliable.

[0065] In a second aspect, an embodiment of the present invention further provides a vehicle, comprising a zero-gravity adaptive headrest of the above structure, wherein the zero-gravity adaptive headrest is installed on a seat of the vehicle. The specific structure of the zero-gravity adaptive headrest can be referred to Figures 1 to 9 Since the vehicle of the present invention includes the zero-gravity adaptive headrest in the above embodiment, it has all the advantages of the above zero-gravity adaptive headrest.

[0066] Embodiment 2

[0067] like Figures 10 to 19As shown, in the zero-gravity adaptive headrest of the embodiment of the present invention, a ventilation mechanism 12 is provided in the headrest body, so that the headrest has a ventilation function, which is convenient for blowing air to cool down the head of the occupant and improves the comfort of the head area of ​​the occupant in the vehicle. The ventilation mechanism 12 is mainly used for air supply, which is convenient for blowing air to the head of the occupant 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 gas blown out by the ventilation mechanism 12 can pass through the headrest body to blow air to the head of the occupant.

[0069] At the same time, in an embodiment of the present 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 select a motor plus a fan, or a conventional ventilation pump structure. After the mechanism is started, gas can be blown out, which is convenient for blowing the main area of ​​the headrest.

[0070] Furthermore, in an embodiment of the present invention, the headrest body includes a headrest frame 3 and a foam matrix connected to the headrest frame 3; the headrest frame 3 plays a good supporting role, ensuring the overall structural strength of the headrest body, and the foam matrix is ​​made of soft material as a whole, which can provide soft support for the head of the occupant and ensure the riding comfort of the occupant.

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

[0072] At the same time, in an embodiment of the present invention, the foaming base and the ventilation mechanism 12 are arranged on opposite sides of the headrest frame 11; ventilation holes 19 are provided on the headrest frame 11; a ventilation channel 18 is provided on the foaming base, and the ventilation holes 19 are connected with the ventilation channel 18; the gas provided by the ventilation mechanism 12 passes through the ventilation holes 19 and enters the ventilation channel 18 of the foaming base, and the gas can be discharged through the channel, so that the gas passes through the headrest body and blows to the head of the occupant.

[0073] Furthermore, in an embodiment of the present invention, the foaming base includes a headrest base 10 and a headrest foam 1. The headrest base 10 and the headrest foam 9 can both be made of foam material. The headrest base 10 as a whole is an arc-shaped block structure, and the headrest foam 9 is a rectangular block structure. Such a setting is convenient for contact with the head of the occupant, ensuring the contact area between the foaming base and the head of the occupant, and ensuring the comfort of the occupant's head.

[0074] In addition, in the embodiment of the present invention, the ventilation channel 18 is arranged on the headrest foam body 9, and the headrest foam body 9 is connected to the headrest frame 11 through the headrest base 10; a connecting through hole 15 is provided on the headrest base 10; the connecting through hole 15 is connected with the ventilation hole 19; in the embodiment of the present invention, based on the above design, the connection between the headrest foam body 9, the headrest base 10 and the headrest frame 11 is facilitated. During the actual connection, the headrest base 10 is fixed on the headrest frame 11, and the connection method between the two is various, which can be selected according to needs, such as gluing and the like. In addition, in the embodiment of the present invention, the connecting through hole 15 and the ventilation hole 19 are arranged relative 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 outlet operation.

[0075] Furthermore, in an embodiment of the present invention, the headrest foam body 9 is embedded in the headrest base 10; an embedded groove 17 is provided on the headrest base 10, and the headrest foam body 9 is arranged in the embedded groove 17; the embedded groove 17 provided on the headrest base 10 plays a storage role, which facilitates the placement of the headrest foam body 9 on the headrest base 10. In addition, in the embodiment of the present invention, the embedded groove 17 is located in the middle area of ​​the headrest base 10; so that the inner side wall of the embedded groove 17 can limit the circumferential position of the headrest foam body 9, and the headrest foam body 9 can be bonded to the headrest base 10 by glue; based on such a setting, the stability of the headrest foam body 9 in the headrest base 10 is guaranteed.

[0076] Furthermore, in an embodiment of the present invention, the ventilation channel 18 includes an air duct groove 23 and a through hole group 24 arranged on the headrest foam body 9; the air 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, when used subsequently, it is arranged on the side close to the occupant, and the air duct groove 23 is close to the side of the headrest base 10. When used subsequently, the ventilation mechanism 12 supplies gas into the air duct groove 23, and the gas then flows from the air duct groove 23 to the through hole group 24, and then is discharged to the outside through the through hole group 24 to blow on the occupant's head, thereby realizing ventilation and cooling of the occupant's head.

[0077] In the embodiment of the present invention, the depth of the air duct groove 23 is less than the thickness of the headrest foam body 9; such a setting makes the air duct groove 23 equivalent to being set on one side of the headrest foam body 9, so that the flatness of the headrest foam body 9 close to the passenger side can be ensured as much as possible, ensuring the comfort of the passenger.

[0078] In addition, in the embodiment of the present invention, the through hole group 24 includes a plurality of single through holes 16, each of which extends from the air duct groove 23 on the headrest foam body 9 to a side away from the air duct groove 23; the plurality of single through holes 16 ensure the ventilation of the headrest foam body 9, and the embodiment of the present invention can ensure that the gas blown out of the ventilation mechanism 12 can pass through and blow to the head area of ​​the occupant through the coordinated use of the air duct groove 23 and the plurality of single through holes 16, thereby improving the riding comfort of the occupant.

[0079] Furthermore, in an embodiment of the present invention, the air duct sink 23 includes a plurality of spaced-apart, parallel-distributed single sinks 21, the single sinks 21 being a part of the air duct sink 23, the single sinks 21 being inclined, and two or more adjacent single sinks 21 being connected by at least one connecting sink 22; such an arrangement enables the headrest foam body 9 to form a grid-like structure close to the foaming substrate side, which facilitates the subsequent flow of gas. In addition, the connecting sink 22 plays a connecting role. When the gas supplied by the ventilation mechanism 12 enters one or more single sinks 21, it can be diffused through the connecting sink 22, and gas is distributed in each single sink 21 as much as possible. Such an arrangement can increase the wind outlet area of ​​the headrest, which is beneficial for blowing multiple areas of the occupant's head, thereby achieving cooling operations in more areas of the occupant's head.

[0080] In the embodiment of the present invention, the single body sink 21 is set at an angle of 45 degrees to the horizontal plane, and the connecting sink 22 and the single body sink 21 are arranged to intersect; it is generally required that the connecting sink 22 and the single body sink 21 are arranged perpendicular to each other. Such a setting can achieve the connection between the single body sinks 21 at the shortest distance. At the same time, at the intersection of the connecting sink and the single body sink 21, it is required to use an arc surface transition. Such a setting can reduce the running resistance of the gas in the air duct sink 23, which is beneficial to ensure the diffusion range of the gas in the headrest body.

[0081] Furthermore, in an embodiment of the present invention, a wind-blocking layer 14 is provided on the side of the headrest foam body 9 close to the headrest base 10; in the embodiment of the present invention, the wind-blocking layer 14 plays a covering and blocking role, and in subsequent use, it mainly covers the air duct groove 23 to avoid problems such as air leakage on the side of the air duct groove 23 close to the headrest base 10; in an embodiment of the present invention, the wind-blocking layer 14 can be made of a non-woven fabric layer; the wind-blocking layer 14 is attached to the headrest foam body 9; the two can be connected by gluing or other methods; in an embodiment of the present invention, the wind-blocking layer 14 covers the air duct groove 23, so that the air duct groove 23 is equivalent to an internal trough structure, which is convenient for regional limitation of the gas entering the headrest foam body 9 and ensuring the air output of the headrest.

[0082] In addition, in the embodiment of the present 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; such an arrangement facilitates the gas supplied by the ventilation mechanism 12 to enter the headrest foam body 9 .

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

[0084] In an embodiment of the present invention, the headrest also includes a headrest rear decorative cover 5; the headrest rear decorative cover 5 is hollow to form a placement cavity; the headrest rear decorative cover 5 plays a shielding and protective role, and at the same time, an internal cavity can be formed to facilitate the placement of the headrest body; the headrest rear decorative cover 5 is connected to the headrest frame 11; the two can be connected by bolts or by snap-fitting.

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

[0086] In addition, in an embodiment of the present invention, the ventilation pump is connected to the headrest frame 11 through a fastening component; the provision of the fastening component facilitates the connection between the ventilation pump and the headrest frame 11. Specifically, in an embodiment of the present invention, the fastening component includes a support column provided on the headrest frame 11; the pump housing is overlapped on the support column; and subsequently, the pump housing is connected to the support column by bolts passing through the pump housing. Such a provision facilitates the installation and use of the ventilation pump on the headrest frame 11.

[0087] In addition, in an embodiment of the present invention, the ventilated headrest assembly includes two ventilation mechanisms 12, and the two ventilation mechanisms 12 are spaced apart on the headrest frame 11, and the ventilation pumps in the two ventilation mechanisms 12 are connected through the same wiring harness assembly 20; such a configuration can reduce the use of the wiring harness assembly 20 while ensuring the air supply. The two ventilation mechanisms 12 disclosed in the embodiment of the present 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 buckles; the headrest frame 11 of the embodiment of the present invention has an arc-shaped structure as a whole, 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 arranged to intersect, and such a configuration can better ensure the diffusion of gas in the air duct sink 23.

[0088] In the embodiment of the present invention, the headrest foam body 9 and the headrest base 10 are mainly made of foam material, and the headrest frame 11 is mainly supported by plastic. Generally, high-strength plastic material is selected, which has the characteristics of lightness and high strength; the headrest frame 11 is required to be able to effectively bear the headrest and its accessories to ensure structural stability.

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

[0090] The grid-shaped pattern disclosed in the embodiment of the present invention is mainly formed by ventilation channels 18, which are formed by the intersection of multiple single grooves 21 and connecting grooves 22. The grid-shaped pattern forms multiple small channels, which increases the air circulation speed and further improves the heat dissipation effect; and the pattern foaming helps to reduce the pressure point between the head and the headrest, increase the occupant's head intrusion and improve comfort.

[0091] The mesh pattern also has the following characteristics:

[0092] 1. Significant ventilation effect: The grid-shaped pattern forms an effective air circulation path through the staggered arrangement of multiple small channels; hot air can be quickly discharged through these small channels to achieve efficient heat dissipation.

[0093] 2. Uniform pressure distribution: The grid-shaped structure can evenly disperse the head pressure, 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 staggered structure of the grid-shaped pattern has high strength and stability, which can provide sufficient support while ensuring ventilation effect, thereby enhancing the overall durability of the headrest.

[0095] Adapts to various head shapes: The grid-shaped pattern can adaptively adjust according to different head shapes, providing better fit and support, further improving the comfort of the occupants.

[0096] Compared with other texture shapes:

[0097] Wave pattern: Although the wave pattern has certain advantages in ventilation and comfort, it is not as good as the grid pattern in terms of uniform pressure distribution and structural strength. In addition, the manufacturing process of the wave pattern is relatively complicated, which increases the cost.

[0098] Honeycomb pattern: Honeycomb pattern has outstanding performance in strength and lightness, but its complex structural design may increase manufacturing difficulty and cost. At the same time, honeycomb pattern is slightly inferior to grid pattern in terms of uniform pressure distribution.

[0099] Taking all the above factors into consideration, choosing a grid-shaped pattern as the preferred option can not only significantly improve the ventilation effect and ride comfort, but also ensure the structural strength of the headrest and the controllability of manufacturing costs. It is an ideal choice.

[0100] In addition, since the ventilation channel 18 is relatively wide, the embodiment of the present 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; when used, the non-woven fabric is pasted on the headrest foam 9 to close the ventilation channel 18 to prevent air leakage. When the headrest foam 9 is installed, 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 open two 40mm diameter circular ventilation holes 25 at the ventilation mechanism 12 position.

[0101] Ventilation mechanism 12: A small air suction mechanism is built in; the mechanism is fastened to the plastic of the headrest with screws, and has the characteristics of 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 the specific 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 the headrest foam 9 are connected, and then glued and installed on the headrest base 10 to form a second small assembly, and then the first small assembly and the second small assembly, the face cover and the headrest rear trim cover 5 are assembled into a headrest, the headrest is installed on the seat and connected to the wiring harness, and the occupant starts the ventilation mechanism 12 through the switch to start the headrest for use.

[0103] In a second aspect, an embodiment of the present invention further provides a vehicle, comprising a zero-gravity adaptive headrest of the above structure, wherein the zero-gravity adaptive headrest is installed on a seat of the vehicle. The specific structure of the zero-gravity adaptive headrest can be referred to Figures 1 to 19 Since the vehicle of the present invention includes the zero-gravity adaptive headrest in the above embodiment, it has all the advantages of the above zero-gravity adaptive headrest.

[0104] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A zero-gravity adaptive headrest, comprising a headrest body arranged on a sliding mechanism, characterized in that: The headrest body further comprises a guide mechanism disposed on the headrest body, a limit piece disposed on the sliding mechanism, and a gravity ball disposed on the guide mechanism and movably disposed thereon for limiting the limit piece when the headrest body is in the first position. The gravity ball is disposed so that after being separated from the limit piece, the headrest body can move downward from the first position to the second position.

2. The zero-gravity adaptive headrest according to claim 1, characterized in that: The guide mechanism is provided with a guide groove for guiding the gravity ball to move.

3. The zero-gravity adaptive headrest according to claim 2, characterized in that: The guide groove is V-shaped.

4. The zero-gravity adaptive headrest according to claim 2, characterized in that: The guide mechanism comprises a guide element, the guide element is connected to the headrest body, and the guide groove is arranged on the guide element.

5. The zero-gravity adaptive headrest according to claim 4, characterized in that: The guide element is a V-shaped structure in the interior.

6. The zero-gravity adaptive headrest according to claim 4, characterized in that: The guide mechanism also includes a cover plate which is arranged on the guide element and is used to limit the gravity ball.

7. The zero-gravity adaptive headrest according to claim 6, characterized in that: The cover plate comprises a first limiting portion and a second limiting portion connected to each other, and the second limiting portion is embedded in the guide groove.

8. The zero-gravity adaptive headrest according to claim 7, characterized in that: The first limiting portion and the second limiting portion are V-shaped structures.

9. The zero-gravity adaptive headrest according to claim 7, characterized in that: The cover plate further includes a third limiting portion connected to the second limiting portion, the third limiting portion is embedded in the guide groove, and the third limiting portion is located between the gravity ball and the headrest body.

10. A vehicle, characterized in that: It comprises the zero-gravity adaptive headrest as described in any one of claims 1 to 9.

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