Seat with multi-directional adjustable headrest

Abstract

The utility model discloses a seat with a multi-directional adjustable headrest. The seat comprises the headrest, a connecting seat and a lifting seat, the headrest is connected to the lifting seat through a pivoting assembly, the pivoting assembly comprises a rotating shaft, a first gasket, a second gasket and an elastic piece, the rotating shaft transversely penetrates through the headrest and the lifting seat, and wavy structures are arranged on the opposite faces of the first gasket and the second gasket; the elastic piece is used for providing elastic stress for pressing the first gasket and the second gasket so that the wavy structures on the first gasket and the second gasket can be meshed together. A connecting block is fixed to the connecting seat, the lifting seat comprises a matching wall, the connecting seat and the connecting block are arranged on the two sides of the matching wall respectively and can slide relative to the matching wall in the height direction, a plurality of clamping grooves are formed in the matching wall, and clamping pieces capable of being embedded in the clamping grooves are arranged on the connecting block. The multi-direction adjustment of the headrest can be realized, so that the headrest can better adapt to different sitting postures of a user, and the comfort of a seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a seat with a multi-directionally adjustable headrest. Background Art

[0002] The headrest of a traditional seat is fixedly installed on the backrest of the seat, and it cannot be adjusted according to the height, sitting posture and other individual requirements of the user, and it is difficult to provide better support for the user's head and neck. With the continuous improvement of people's living standards, it is required that the headrest of the seat can be adjusted according to the different heights and sitting postures of the users to meet the individual needs of the users.

[0003] Some existing chairs can adjust the headrest to a suitable height by adjusting the headrest up and down, thereby supporting the user's head and neck. In some office chairs and e-sports chairs, the backrest can be adjusted at an angle to meet the requirement that the user can lie on the backrest. When the user lies back on the seat back, the headrest that can only be adjusted up and down can hardly provide good support for the user's head and neck, affecting the comfort of the chair. Utility Model Content

[0004] The utility model aims to provide a seat with a multi-directionally adjustable headrest, which can meet the use requirements of users in different sitting postures, especially when lying back on the seat back, so that the headrest can better support the head and neck of the user.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Seats with multi-directionally adjustable headrests, including headrests, connection seats connected to seatbacks, and lift seats;

[0007] The headrest is connected to the lifting seat through a pivot assembly, the pivot assembly includes a rotating shaft, a first gasket connected to the headrest, a second gasket connected to the lifting seat, and an elastic member, the rotating shaft crosses the headrest and the lifting seat so that the two have a relative rotational freedom, the first gasket and the second gasket are both provided with a wave-shaped structure on the opposite surfaces, and the elastic member is used to provide an elastic stress for pressing the first gasket and the second gasket so that the wave-shaped structures on the first gasket and the second gasket are engaged with each other;

[0008] A connecting block is detachably fixed on the connecting seat, the lifting seat includes a matching wall, the connecting seat and the connecting block are respectively arranged on both sides of the matching wall and can slide relative to the matching wall along the height direction, a plurality of card slots arranged along the height direction are provided on the matching wall, and a card positioning piece that can be embedded in the card slot is provided on the connecting block.

[0009] Preferably, the headrest is provided with two opposite connecting ears, a receiving groove is formed between the two connecting ears, and a through hole extending from the inner side surface to the outer side surface is provided on the connecting ear; the pivot assembly includes two first gaskets, two second gaskets, and two elastic members; a pivot seat embedded in the receiving groove is provided on the top of the matching wall, and the two sides of the pivot seat are respectively recessed toward the middle to form a receiving groove, and an axial hole extending from the inner end surface of one of the receiving grooves to the inner end surface of the other receiving groove is provided on the pivot seat, and the two second gaskets are respectively The two first gaskets are respectively embedded in the through holes of the two connecting ears and are respectively connected to the two connecting ears synchronously, and the first gaskets are configured to be able to move in the through holes along the axial direction of the rotating shaft, the middle part of the rotating shaft is connected to the shaft hole, and the two ends are respectively extended into the through holes of the two connecting ears, the outer ends of the two elastic members respectively abut against the two end parts of the rotating shaft, and the inner ends respectively abut against the two first gaskets, so as to press the first gasket toward the second gasket and press the second gasket against the inner end surface of the receiving groove.

[0010] Preferably, the elastic member is an elastic rubber sleeve or a spring sleeved on the rotating shaft.

[0011] Preferably, the rotating shaft includes a shaft rod and a fastener threaded on one end of the shaft rod, and a pressing plate is respectively provided on the end of the shaft rod away from the fastener and on the fastener, and the two pressing plates are respectively pressed on the outer ends of the two elastic members.

[0012] Preferably, a limiting groove is provided on the inner end surface of the accommodating groove, and a limiting flange is protrudingly provided on the side of the second gasket facing away from its wavy structure. The limiting flange is embedded in the limiting groove and cooperates with the limiting groove to form a first limiting mechanism for limiting the rotation of the second gasket relative to the pivot seat.

[0013] Preferably, a limiting slot is provided on the inner wall of the through hole, the extension direction of the limiting slot is consistent with the axial direction of the rotating shaft, and a limiting rib is provided on the outer periphery of the first gasket. The limiting rib is slidably embedded in the limiting slot and cooperates with the limiting slot to form a second limiting mechanism for limiting the rotation of the first gasket relative to the connecting ear.

[0014] Preferably, a slider is provided on one side of the connecting seat protruding toward the mating wall, a sliding groove extending along the height direction is provided on the mating wall, the slider is slidably embedded in the sliding groove, the connecting block is fixedly connected to the slider by screws, and a plurality of wear-resistant strips pressed on the mating wall are installed on the side surface of the connecting seat facing the mating wall, and the wear-resistant strips are wavy.

[0015] Preferably, the multiple card slots on the mating wall are arranged in two rows on the side surface of the mating wall facing away from the connecting seat, and the two rows of card slots are respectively located on both sides of the slide groove; two installation grooves are provided on the side of the connecting block facing the mating wall, and the positioning member includes two steel balls respectively located in the two installation grooves.

[0016] Preferably, a cover plate is provided on the side of the lifting seat facing away from the connecting seat, the cover plate and the matching wall are detachably fixed together, and the cover plate and the matching wall enclose a chamber, and the connecting block is placed inside the chamber.

[0017] Preferably, the headrest comprises a supporting portion for supporting the human head and / or neck, and a bracket, the bracket is connected to the lifting seat through a pivot assembly, and the supporting portion is rotatably connected to the bracket.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In the utility model, a pivot assembly is adopted to connect the headrest and the lifting seat, so that the headrest can rotate relative to the lifting seat, and the wavy structures on the two gaskets that bite each other and the elastic member provide damping for the rotation of the headrest and the lifting seat. When the headrest is rotated to an appropriate angle relative to the lifting seat, the headrest can be kept relatively fixed with the lifting seat; the lifting seat and the connecting seat can cooperate to slide up and down, and when the lifting seat is adjusted to an appropriate position relative to the connecting seat in the height direction, the locking piece and the locking groove cooperate to lock the lifting seat and the connecting seat; in this way, the seat of the utility model can not only adjust the height of the headrest, but also adjust the direction of the headrest by rotation, so as to realize multi-directional adjustment of the headrest, so that the headrest can better adapt to different sitting postures of the user, especially when lying back on the seat back, so that the headrest can better support the head and neck of the user, thereby improving the comfort of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the use state of the utility model;

[0022] Figure 3 for Figure 2 AA section view;

[0023] Figure 4 for Figure 2 BB cross-sectional view;

[0024] Figure 5 for Figure 1 A schematic diagram of the cooperation between the middle connecting ear and the first gasket;

[0025] Figure 6 for Figure 1 A schematic diagram of the cooperation between the central connector and the second gasket;

[0026] Figure 7 for Figure 1 Schematic diagram of the structure of the connection block. DETAILED DESCRIPTION

[0027] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] like Figure 1 , 2, 3, 4, 5, 6, and 7 show a seat with a multi-directionally adjustable headrest of the present invention, which includes a headrest 10, a connecting seat 20 connected to the seat back, and a lifting seat 30. The lifting seat 30 can move in the height direction relative to the connecting seat 20, and the headrest 10 can rotate relative to the lifting seat 30 to achieve multi-directional adjustment of the headrest 10. Specifically, the headrest 10 is connected to the lifting seat 30 through a pivot assembly, and the pivot assembly can ensure that the headrest 10 rotates relative to the lifting seat 30, and can also adjust the headrest 10 in multiple directions. The headrest 10 and the lifting seat 30 are rotated to lock the position. Specifically, the pivot assembly includes a rotating shaft, a first gasket 52 connected to the headrest 10, a second gasket 53 connected to the lifting seat 30, and an elastic member. The rotating shaft crosses the headrest 10 and the lifting seat 30, so that the headrest 10 and the lifting seat 30 have a relative rotational freedom. A wavy structure 521 is provided on one side of the first gasket 52, and a wavy structure 531 is provided on the side opposite to the first gasket 52. The wavy structure 531 of the first gasket 52 The wave-shaped structure 521 and the wave-shaped structure 531 of the second gasket 53 have the same structure and size. The elastic stress provided by the elastic member makes the first gasket 52 and the second gasket 53 always keep a tendency to approach each other. When the first gasket 52 and the second gasket 53 are against each other, the wave-shaped structure 521 and the wave-shaped structure 531 are engaged with each other. A connecting block 40 is fixedly connected to the connecting seat 20 in a detachable manner. The lifting seat 30 includes a matching wall 31 extending vertically. The connecting seat 20 and the connecting block 40 They are respectively placed on both sides of the matching wall 31, and the assembly formed by connecting the connecting seat 20 and the connecting block 40 can slide relative to the matching wall 31 in the height direction. The matching wall 31 is provided with a plurality of slots 312 arranged in the height direction. A locking piece is installed on the connecting block 40. The locking piece can move up and down with the connecting block 40 relative to the matching wall 31, so that the locking piece can be embedded in one of the slots 312. The relative position of the connecting seat 20 and the lifting seat 30 in the height direction is limited by the cooperation between the locking piece and the slot 312.

[0031] In the utility model, a pivot assembly is used to connect the headrest 10 and the lifting seat 30, so that the headrest 10 can rotate relative to the lifting seat 30, and the wave-shaped structure on the two gaskets that bite each other and the elastic member provide damping for the rotation of the headrest 10 and the lifting seat 30. When the headrest 10 rotates to an appropriate angle relative to the lifting seat 30, the headrest 10 can remain relatively fixed with the lifting seat 30; the lifting seat 30 and the connecting seat 20 can cooperate to slide up and down, and when the lifting seat 30 is adjusted to an appropriate position relative to the connecting seat 20 along the height direction, the locking member and the locking groove 312 cooperate to lock the lifting seat 30 and the connecting seat 20; in this way, the seat of the utility model can not only adjust the height of the headrest 10, but also adjust the direction of the headrest 10 by rotating, so as to realize multi-directional adjustment of the headrest 10, so that the headrest 10 can better adapt to different sitting postures of the user, especially when lying back on the seat back, so that the headrest 10 can better support the head and neck of the user, thereby improving the comfort of the seat.

[0032] In the utility model, the wavy structure arranged on the first gasket 52 and the second gasket 53 is specifically an up and down undulating structure arranged along the circumference thereof, which can be regarded as a plurality of grooves arranged in the circumference thereof, and convex ribs are formed between adjacent grooves, so that when the first gasket 52 and the second gasket 53 are subjected to axial force (such as elastic stress of elastic member), the up and down wavy structures are engaged with each other, and when the first gasket 52 and the second gasket 53 are rotated relative to each other, the wavy structures engaged with each other can provide a certain damping, and when the external rotation force is large, the two wavy structures engaged with each other can rotate relative to each other.

[0033] In a preferred embodiment, the utility model is provided with two opposite connecting ears 11 on the headrest 10, and a receiving groove 112 is formed between the two connecting ears 11, and a through hole 111 is provided on each of the two connecting ears 11, and the through hole 111 extends from the inner side surface of the connecting ear 11 to the outer side surface; the pivot assembly includes two first gaskets 52, two second gaskets 53, and two elastic members; the top of the matching wall 31 is provided with a pivot seat 32 protruding upward, and the width of the pivot seat 32 is equivalent to the width of the receiving groove 112, so that the pivot seat 32 can be embedded in the receiving groove 112, and the two sides of the pivot seat 32 are respectively provided with a receiving groove 322 recessed toward the middle thereof, and the internal size of the receiving groove 322 is set to be just for the second gasket 53 to be embedded, and an axial hole 321 is also provided on the pivot seat 32, and the axial hole 321 extends from the inner end surface of one of the receiving grooves 322 to the other The inner end surface of the receiving groove 322 is used to embed the two second gaskets 53 in the two receiving grooves 322 respectively, and the second gasket 53 is synchronously connected with the pivot seat 32 to prevent the second gasket 53 from rotating relative to the pivot seat 32. The two first gaskets 52 are respectively embedded in the through holes 111 of the two connecting ears 11, so that the two first gaskets 52 are synchronously connected with the two connecting ears 11 to prevent the first gasket 52 from rotating relative to the connecting ears 11. After the first gasket 52 is embedded in the through hole 111, the first gasket 52 has the freedom to move along the axial direction of the through hole 111, that is, the first gasket 52 can move in the through hole 111 along the axial direction of the rotating shaft; after the two first gaskets 52 are placed in the through hole 111, the two first gaskets 52 are respectively located on the outside of the two second gaskets 53, and the wave-shaped structures of the first gasket 52 and the second gasket 53 are arranged relative to each other;The middle part of the rotating shaft is connected to the shaft hole 321, and the two ends of the rotating shaft are respectively extended into the through holes 111 of the two connecting ears 11. The two elastic members are respectively located between the two ends of the rotating shaft and the two second gaskets 53, so that the inner end of the elastic member abuts against the second gasket 53, and the outer end abuts against the end of the rotating shaft. The elastic member is pressed inwardly by the end of the rotating shaft, so that the inner end of the elastic member applies elastic stress to the first gasket 52. The first gasket 52 is pressed against the second gasket 53 by the elastic stress, and the second gasket 53 is pressed against the inner end surface of the accommodating groove 322. When the first gasket 52 and the second gasket 53 are pressed against each other, the wavy structure 521 on the first gasket 52 and the wavy structure 531 on the second gasket 53 are engaged with each other. At this time, when the headrest 10 is not subjected to a large external force, the wavy structure The mutual engagement of the wave-shaped structure 521 and the wave-shaped structure 531 locks the rotational freedom of the headrest 10 relative to the lifting seat 30. When the direction of the headrest 10 needs to be adjusted, the headrest 10 is rotated relative to the lifting seat 30, and the convex parts on the wave-shaped structure 521 and the wave-shaped structure 531 are interlaced, so that the first gasket 52 moves in the direction away from the second gasket 53 along the axial direction of the rotating shaft, and the elastic member is compressed. After the first gasket 52 and the second gasket 53 are relatively rotated at a certain angle, the headrest 10 is adjusted to a proper angle, and the elastic member rebounds, so that the first gasket 52 moves in the direction close to the second gasket 53 along the axial direction of the rotating shaft until the wave-shaped structure 521 on the first gasket 52 is again engaged with the wave-shaped structure 531 on the second gasket 53, thereby locking the rotational freedom of the headrest 10 and the lifting seat 30. ;

[0034] The elastic member is an elastic rubber sleeve 54 sleeved on the rotating shaft, and the elastic rubber sleeve 54 may be embedded in the through hole 111 of the connecting ear 11; in other embodiments, the elastic member may also be a spring sleeved on the rotating shaft.

[0035] In order to facilitate installation, the utility model sets the rotating shaft as a split structure. Specifically, the rotating shaft includes a shaft rod 51 and a fastener 55. The fastener 55 is screwed on one end of the shaft rod 51. A pressing piece is provided at the end of the shaft rod 51 away from the fastener 55 and on the fastener 55. The two pressing pieces are respectively pressed on the outer ends of the two elastic members. Taking the elastic member as the elastic rubber sleeve 54 mentioned above as an example, during assembly, the two second gaskets 53 are respectively embedded in the two receiving grooves 322 of the pivot seat 32, and then the pivot seat 32 is placed in the receiving groove 112 between the two connecting ears 11, so that the center of the shaft hole 321 is aligned with the center of the through hole 111, and then the second gaskets 53 are respectively embedded in the two receiving grooves 322 of the pivot seat 32. Then, the first gasket 52 and the elastic rubber sleeve 54 are sequentially embedded in the two through holes 111 from the outside to the inside, and the shaft rod 51 is inserted into the through hole 111 from the outside of one of the connecting ears 11, so that the shaft rod 51 passes through the elastic rubber sleeve 54, the first gasket 52, the second gasket 53, the shaft hole 321, the second gasket 53, the first gasket 52, and the elastic rubber sleeve 54 in sequence. Finally, the fastener 55 is embedded in the through hole 111 on the outside of the other connecting ear 11, so that the fastener 55 and the shaft rod 51 are connected, and the fastener 55 is rotated to connect the fastener 55 and the shaft rod 51 in place, and the fastener 55 and the pressing sheets on the shaft rod 51 respectively press the two elastic rubber sleeves 54.

[0036] See also Figure 5 , 6 As shown, a limiting groove 323 is provided on the inner end surface of the accommodating groove 322, and a limiting flange 532 is protruding on the side of the second gasket 53 away from its wavy structure 531, and the limiting flange 532 is embedded in the limiting groove 323, and the limiting flange 532 and the limiting groove 323 cooperate to form a first limiting mechanism for limiting the rotation of the second gasket 53 relative to the pivot seat 32; a limiting groove 113 is provided on the inner wall of the through hole 111, and the extending direction of the limiting groove 113 is consistent with the axial direction of the rotating shaft, and a limiting rib 522 is provided on the outer peripheral edge of the first gasket 52, and the limiting rib 522 is slidably embedded in the limiting groove 113, and the limiting rib 522 cooperates with the limiting groove 113 to form a second limiting mechanism for limiting the rotation of the first gasket 52 relative to the connecting ear 11, while ensuring that the first gasket 52 can slide inside the through hole 111 along the axial direction of the rotating shaft.

[0037] It should be pointed out that in some embodiments, the second gasket 53 can be integrally formed on both side surfaces of the pivot seat 32 , and the first gasket 52 only needs to be configured to be movable along the axial direction of the rotating shaft so that the first gasket 52 has the freedom to move closer to or away from the second gasket 53 .

[0038] like Figure 1As shown, a slider 21 is provided on one side of the connecting seat 20 protruding toward the matching wall 31, and a slide groove 311 extending in the height direction is provided on the matching wall 31. The slider 21 is slidably embedded in the slide groove 311, and the slide groove 311 cooperates with the slider 21 to guide the up and down movement of the lifting seat 30 relative to the connecting seat 20. The connecting block 40 is fixedly connected to the slider 21 by screws, so that the connecting block 40 and the connecting seat 20 are detachably fixed together. Two wear-resistant strips 22 are installed on one side of the connecting seat 20 facing the matching wall 31. The wear-resistant strips 22 It is configured to be wavy and pressed onto the mating wall 31. By configuring the wear-resistant strip 22, the contact area between the connecting seat 20 and the mating wall 31 can be reduced, thereby reducing the friction resistance between the connecting seat 20 and the mating wall 31. The configuration of the wear-resistant strip 22 can prevent the connecting seat 20 from being worn, and the wear-resistant strip 22 is configured to be wavy, so that the wear-resistant strip 22 can be pressed by the connecting seat 20 and the mating wall 31 to produce a certain elastic deformation, thereby ensuring that a certain clamping force can be generated between the connecting seat 20 and the mating wall 31, thereby preventing a loose gap between the connecting seat 20 and the lifting seat 30.

[0039] See also Figure 1 Combined with Figure 7 As shown, a plurality of slots 312 provided on the matching wall 31 are arranged in two rows on the side of the matching wall 31 away from the connecting seat 20, and the two rows of slots 312 are respectively located on both sides of the slide slot 311, and two mounting slots 42 are provided on the connecting block 40 on the side facing the matching wall 31. The above-mentioned positioning member for cooperating with the slots 312 includes two steel balls 41, and the two steel balls 41 are respectively located in the two mounting slots 42, and a part of the steel balls 41 protrudes from the opening of the mounting slots 42. When the lifting seat 30 is adjusted up and down to an appropriate position, the parts of the two steel balls 41 protruding from the mounting slots 42 are respectively clamped in two slots 312 of equal height, so that the upper and lower positions of the lifting seat 30 and the connecting block 40 are locked, and then the upper and lower positions of the lifting seat 30 and the connecting seat 20 are locked. A cover plate 60 is provided on the side of the lifting seat 30 away from the connecting seat 20. The cover plate 60 is fixed to the matching wall 31 by screw connection, clamping or other detachable means, and the cover plate 60 and the matching wall 31 enclose a chamber, and the above-mentioned connecting block 40 is placed inside the chamber. The connecting block 40 is shielded by the cover plate 60, so that the part where the lifting seat 30 and the connecting seat 20 slide and cooperate with each other is sealed inside the chamber to prevent dust from entering and affecting the components.

[0040] See also Figure 1 , 2As shown, the headrest 10 of the utility model includes a support portion 13 and a bracket 12. The support portion 13 is arranged in an arc shape with a middle portion recessed backwards to support the human head and / or neck. Two connecting ears 11 are arranged on the bracket 12, so that the bracket 12 is connected to the lifting seat 30 through a pivot assembly. The support portion 13 is rotatably connected to the bracket 12. When the seat is used, the rotation angle of the support portion 13 relative to the bracket 12 can be adjusted to better support the user's head and / or neck, or when the seat is used, the support portion 13 can be adaptively rotated relative to the bracket 12 according to the user's sitting posture, so that the user's head and / or neck can obtain a better support effect.

[0041] Finally, it should be noted that the above-mentioned implementation modes are only optional embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A seat with a multi-directionally adjustable headrest, characterized in that: including a headrest, a connecting seat connected to a seat back, and a lifting seat; The headrest is connected to the lifting seat through a pivot assembly, the pivot assembly includes a rotating shaft, a first gasket connected to the headrest, a second gasket connected to the lifting seat, and an elastic member, the rotating shaft crosses the headrest and the lifting seat so that the two have a relative rotational freedom, the first gasket and the second gasket are both provided with a wave-shaped structure on the opposite surfaces, and the elastic member is used to provide an elastic stress for pressing the first gasket and the second gasket so that the wave-shaped structures on the first gasket and the second gasket are engaged with each other; A connecting block is detachably fixed on the connecting seat, the lifting seat includes a matching wall, the connecting seat and the connecting block are respectively arranged on both sides of the matching wall and can slide relative to the matching wall along the height direction, a plurality of card slots arranged along the height direction are provided on the matching wall, and a card positioning piece that can be embedded in the card slot is provided on the connecting block.

2. The seat with a multi-directionally adjustable headrest as claimed in claim 1, characterized in that: The headrest is provided with two opposite connecting ears, a receiving groove is formed between the two connecting ears, and a through hole extending from the inner side surface to the outer side surface is provided on the connecting ear; the pivot assembly includes two first gaskets, two second gaskets, and two elastic members; a pivot seat embedded in the receiving groove is provided on the top of the matching wall, and the two sides of the pivot seat are respectively recessed toward the middle to form a receiving groove, and the pivot seat is provided with an axial hole extending from the inner end surface of one of the receiving grooves to the inner end surface of the other receiving groove, and the two second gaskets are respectively embedded in the receiving groove. The two first gaskets are respectively embedded in the through holes of the two connecting ears and are respectively connected to the two connecting ears synchronously, and the first gaskets are configured to be able to move in the through holes along the axial direction of the rotating shaft, the middle part of the rotating shaft is connected to the shaft hole, and the two ends are respectively extended into the through holes of the two connecting ears, the outer ends of the two elastic members are respectively pressed against the two end parts of the rotating shaft, and the inner ends are respectively pressed against the two first gaskets, so as to press the first gasket toward the second gasket and press the second gasket against the inner end surface of the receiving groove.

3. The seat with a multi-directionally adjustable headrest as claimed in claim 2, characterized in that: The elastic member is an elastic rubber sleeve or a spring sleeved on the rotating shaft.

4. The seat with a multi-directionally adjustable headrest as claimed in claim 2, characterized in that: The rotating shaft comprises a shaft rod and a fastener screwed on one end of the shaft rod. One end of the shaft rod away from the fastener and the fastener are respectively provided with a pressing sheet, and the two pressing sheets are respectively pressed on the outer ends of the two elastic members.

5. The seat with a multi-directionally adjustable headrest as claimed in claim 2, characterized in that: A limiting groove is provided on the inner end surface of the accommodating groove, and a limiting flange is protrudingly provided on the side of the second gasket away from its wavy structure. The limiting flange is embedded in the limiting groove and cooperates with the limiting groove to form a first limiting mechanism for limiting the rotation of the second gasket relative to the pivot seat.

6. The seat with a multi-directionally adjustable headrest as claimed in claim 2, characterized in that: A limiting slot is provided on the inner wall of the through hole, and the extending direction of the limiting slot is consistent with the axial direction of the rotating shaft. A limiting rib is provided on the outer periphery of the first gasket, and the limiting rib is slidably embedded in the limiting slot and cooperates with the limiting slot to form a second limiting mechanism for limiting the rotation of the first gasket relative to the connecting ear.

7. The seat with a multi-directionally adjustable headrest as claimed in claim 1, characterized in that: A slider is provided on one side of the connecting seat protruding toward the matching wall, and a slide groove extending along the height direction is provided on the matching wall. The slider is slidably embedded in the slide groove, and the connecting block is fixedly connected to the slider by screws. A plurality of wear-resistant strips pressed on the matching wall are installed on the side surface of the connecting seat facing the matching wall, and the wear-resistant strips are wavy.

8. The seat with a multi-directionally adjustable headrest as claimed in claim 7, characterized in that: The multiple card slots on the matching wall are arranged in two rows on the side of the matching wall away from the connecting seat, and the two rows of card slots are respectively located on both sides of the slide groove; two installation grooves are provided on the side of the connecting block facing the matching wall, and the positioning member includes two steel balls respectively located in the two installation grooves.

9. The seat with a multi-directionally adjustable headrest as claimed in claim 8, characterized in that: A cover plate is arranged on one side of the lifting seat away from the connecting seat. The cover plate and the matching wall are detachably fixed together, and the cover plate and the matching wall enclose a chamber, and the connecting block is arranged inside the chamber.

10. The seat with a multi-directionally adjustable headrest according to claim 1, characterized in that: The headrest comprises a supporting part for supporting the head and / or neck of a human body, and a bracket. The bracket is connected to the lifting seat through a pivot assembly, and the supporting part is rotatably connected to the bracket.

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