Height-adjustable automobile seat suspension headrest and automobile seat

Abstract

The invention provides a height-adjustable automobile seat suspension headrest and an automobile seat, and relates to the technical field of automobile seat equipment. The automobile seat suspension headrest with the adjustable height comprises a suspension headrest body, a headrest adjusting assembly, a headrest rod, a headrest lifting support and a lifting and degrading sliding plate. The headrest lifting support is installed in the seat backrest, the headrest rod is arranged on the headrest lifting support in a penetrating mode, and the head suspension headrest is installed on the headrest lifting support through the connecting rod. The lifting and lowering locking sliding plate can be matched with a one-way locking groove in the side wall of the headrest rod, and the headrest adjusting assembly is in transmission connection with the lifting and lowering locking sliding plate so that the headrest adjusting assembly can drive the lifting and lowering locking sliding plate to move in a reciprocating mode; the bottom of the one-way locking groove is a plane, and the top of the one-way locking groove is an inclined plane, so that the lifting and lowering locking sliding plate can freely move upwards relative to the headrest rod. The automobile seat comprises the automobile seat suspension headrest with the adjustable height. The technical effect that the suspended headrest can be adjusted up and down is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat equipment, in particular to a height-adjustable automobile seat suspension headrest and an automobile seat. Background Art

[0002] At present, the social economy is growing rapidly with the development of science and technology, and various industries are booming. The automobile industry is no exception. As one of the means of transportation used by modern people for travel, the car is used for medium and long-distance travel and transportation. In the entire internal structure of the car, the car seat is one of the more important parts. The headrest on the car seat protects people's necks and reduces fatigue of the cervical spine during daily travel.

[0003] In recent years, suspended headrests for car seats have gradually become popular. Due to their simple and technological appearance, they have gradually been favored by consumers. However, existing suspended headrests have smaller space than traditional headrests, which is not conducive to the arrangement of headrest adjustment mechanisms and are often designed to be fixed, which cannot effectively meet the needs of drivers and passengers of different heights. Summary of the invention

[0004] The object of the present invention is to provide a height-adjustable suspended headrest for a car seat and a car seat, so as to alleviate the technical problem that the suspended headrest in the prior art cannot be adjusted.

[0005] In a first aspect, an embodiment of the present invention provides a height-adjustable suspended headrest for a car seat, comprising a suspended headrest, a headrest adjustment assembly, a headrest rod, a headrest lifting bracket, and a lifting and unlocking slide plate;

[0006] The headrest lifting bracket is installed in the seat back, the headrest rod is passed through the headrest lifting bracket, the headrest adjustment assembly is installed on the floating headrest, and the floating headrest is installed on the headrest lifting bracket through a connecting rod;

[0007] The lifting and unlocking slide is slidably arranged on the headrest lifting bracket, and the lifting and unlocking slide can cooperate with the one-way locking groove on the side wall of the headrest rod, and the headrest adjustment component is transmission-connected with the lifting and unlocking slide, so that the headrest adjustment component can drive the lifting and unlocking slide to reciprocate;

[0008] The bottom of the one-way locking groove is a plane, and the top of the one-way locking groove is an inclined surface. The lifting and unlocking slide plate can abut against the bottom of the one-way locking groove so that the lifting and unlocking slide plate can freely move upward relative to the headrest rod.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned floating headrest has a headrest bracket, the connecting rod is arranged on the headrest bracket, and the connecting rod is connected to the headrest lifting bracket by a bolt;

[0010] The headrest lifting bracket is provided with a connection hole for the headrest rod to pass through, and the headrest lifting bracket is provided with a plurality of tight-fitting grooves, the plurality of tight-fitting grooves are all connected to the connection hole, a tight-fitting ring is inserted in the tight-fitting groove, and the headrest rod can pass through the tight-fitting ring;

[0011] The top and bottom of the tight-fitting ring are both provided with tight-fitting ribs so that the tight-fitting ring is firmly fixed in the tight-fitting groove;

[0012] A fixed half ring and an elastic half ring are arranged inside the tight-fitting ring, the bottom of the elastic half ring is fixedly connected to the tight-fitting ring, the inner wall of the tight-fitting ring is located on the upper part of the elastic half ring and is provided with an elastic claw, an adjustment rod is arranged between the elastic claw and the elastic half ring, an adjustment groove is opened on the tight-fitting ring, and both ends of the adjustment rod are located in the adjustment groove.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the headrest adjustment assembly includes a trigger button, a return compression spring, an unlocking push plate and an unlocking lever;

[0014] The headrest bracket is provided with a mounting groove for mounting the trigger button, the trigger button and the return compression spring are mounted in the mounting groove, one end of the return compression spring abuts against the trigger button, and the other end abuts against the mounting groove;

[0015] The end of the trigger button abuts against the unlocking push plate, and the unlocking push plate abuts against the unlocking lever, so that the unlocking push plate can drive the unlocking lever to rotate;

[0016] One end of the unlocking lever is pivotally connected to the headrest bracket, and the other end is pivotally connected to the headrest lifting bracket. The unlocking lever is transmission-connected to the lifting and unlocking slide plate.

[0017] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a guide groove for installing the unlocking push plate is provided on the headrest bracket;

[0018] The unlocking push plate is provided with a first abutting elastic sheet so that the unlocking push plate can be closely matched with the guiding slide groove.

[0019] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein an unlocking rotating plate is provided on the unlocking lever, and an unlocking convex plate for matching with the unlocking rotating plate is provided on the lifting and unlocking sliding plate.

[0020] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the unlocking lever has an auxiliary rod abutting against the unlocking push plate, and a first return tension spring is provided between the auxiliary rod and the headrest bracket;

[0021] A second return tension spring is arranged between the lifting and unlocking slide plate and the headrest lifting bracket.

[0022] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned lifting and unlocking slide has a sliding hole for the headrest rod to pass through, and a mounting seat is provided on the lifting and unlocking slide at the sliding hole, and a limiting plate is provided on the mounting seat for abutting against the one-way locking groove.

[0023] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the headrest lifting bracket is provided with an unlocking slide groove for the lifting and unlocking slide plate to slide, a first sliding strip is provided at the bottom and top of the unlocking slide groove, a second sliding strip is provided on the lifting and unlocking slide plate, and the first sliding strip and the second sliding strip intersect;

[0024] The lifting and unlocking slide plate is provided with a second abutting elastic sheet so that the lifting and unlocking slide plate and the unlocking slide groove are closely matched.

[0025] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a limiting cross bar is provided on the top of the headrest rod.

[0026] In a second aspect, an embodiment of the present invention provides a car seat, comprising the height-adjustable car seat suspended headrest.

[0027] Beneficial effects:

[0028] The present invention provides a height-adjustable suspended headrest for a car seat, comprising a suspended headrest, a headrest adjustment component, a headrest rod, a headrest lifting bracket and a lifting and unlocking slide; the headrest lifting bracket is installed in a seat back, the headrest rod is penetrated through the headrest lifting bracket, the headrest adjustment component is installed on the suspended headrest, and the suspended headrest is installed on the headrest lifting bracket through a connecting rod; the lifting and unlocking slide is slidably arranged on the headrest lifting bracket, and the lifting and unlocking slide can cooperate with the one-way locking groove on the side wall of the headrest rod, and the headrest adjustment component is transmission-connected with the lifting and unlocking slide, so that the headrest adjustment component can drive the lifting and unlocking slide to reciprocate; the bottom of the one-way locking groove is a plane, the top of the one-way locking groove is an inclined surface, and the lifting and unlocking slide can abut against the bottom of the one-way locking groove, so that the lifting and unlocking slide can freely move upward relative to the headrest rod.

[0029] When the user moves the suspended headrest downward, the user triggers the headrest adjustment assembly provided on the suspended headrest, and the headrest adjustment assembly can drive the lifting and unlocking slide to move, thereby making the lifting and unlocking slide disengage from the bottom of the one-way locking groove of the headrest rod, so that the lowering and unlocking slide can move downward relative to the headrest rod, thereby making the suspended headrest and the headrest lifting bracket and other components move downward.

[0030] The present invention provides a car seat, comprising a height-adjustable car seat suspension headrest. The car seat has the above advantages compared with the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of a height-adjustable suspended headrest for a car seat provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of a height-adjustable suspended headrest for a car seat provided by an embodiment of the present invention;

[0034] Figure 3 An internal schematic diagram of a height-adjustable suspended headrest for a car seat provided by an embodiment of the present invention;

[0035] Figure 4 A schematic diagram of unlocking a headrest adjustment assembly of a height-adjustable automobile seat suspension headrest provided by an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of a mounting slot in a height-adjustable automobile seat suspension headrest provided by an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of a trigger button in a height-adjustable automobile seat suspension headrest provided by an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of a headrest rod in a height-adjustable automobile seat suspension headrest provided by an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of a headrest lifting bracket in a height-adjustable automobile seat suspended headrest provided by an embodiment of the present invention;

[0040] Fig. 9 A schematic diagram of a tight-fitting ring in a height-adjustable suspended headrest for a car seat provided by an embodiment of the present invention;

[0041] Fig.10 A schematic diagram of a lifting and unlocking slide plate in a height-adjustable automobile seat suspension headrest provided in an embodiment of the present invention.

[0042] icon:

[0043] 100 - suspended headrest; 110 - connecting rod; 120 - headrest bracket; 121 - mounting groove; 122 - guide groove;

[0044] 200 - headrest adjustment assembly; 210 - trigger button; 220 - return compression spring; 230 - unlock push plate; 231 - first abutment spring; 240 - unlock lever; 241 - unlock rotating plate; 242 - auxiliary lever; 243 - first return tension spring;

[0045] 300 - headrest rod; 310 - one-way locking groove; 320 - limit cross bar;

[0046] 400 - headrest lifting bracket; 410 - connection hole; 420 - tight fitting groove; 430 - tight fitting ring; 431 - tight fitting reinforcement; 432 - fixed half ring; 433 - elastic half ring; 434 - elastic claw; 435 - adjustment rod; 436 - adjustment groove; 440 - unlocking slide groove; 441 - first slide strip;

[0047] 500 - lifting and unlocking slide plate; 510 - unlocking convex plate; 520 - second return spring; 530 - sliding hole; 540 - limiting plate; 550 - second sliding strip; 560 - second abutting spring sheet. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate 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 the present invention can be understood according to specific circumstances.

[0052] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0053] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5, Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the present embodiment provides a height-adjustable suspended headrest for a car seat, comprising a suspended headrest 100, a headrest adjustment assembly 200, a headrest rod 300, a headrest lifting bracket 400 and a lifting unlocking slide plate 500; the headrest lifting bracket 400 is installed in the seat back, the headrest rod 300 is passed through the headrest lifting bracket 400, the headrest adjustment assembly 200 is installed on the suspended headrest 100, and the suspended headrest 100 is installed on the headrest lifting bracket 400 through a connecting rod 110; the lifting unlocking slide plate 500 is slidably arranged on the headrest lifting bracket 400. On the bracket 400, the lifting and unlocking slide 500 can cooperate with the one-way locking groove 310 on the side wall of the headrest rod 300, and the headrest adjustment component 200 is transmission-connected with the lifting and unlocking slide 500 so that the headrest adjustment component 200 can drive the lifting and unlocking slide 500 to reciprocate; the bottom of the one-way locking groove 310 is a plane, and the top of the one-way locking groove 310 is an inclined surface, and the lifting and unlocking slide 500 can abut against the bottom of the one-way locking groove 310 so that the lifting and unlocking slide 500 can freely move upward relative to the headrest rod 300.

[0054] Specifically, when the user needs to adjust the height of the floating headrest 100 upwards, the user can lift the floating headrest 100 upwards with force. During this process, the lifting and unlocking slide plate 500 abuts against the top inclined surface of the one-way locking groove 310 of the headrest rod 300. The lifting and unlocking slide plate 500 can move under the action of the top inclined surface of the locking groove. The lifting and unlocking slide plate 500 pushes back the elastic part of the headrest adjustment assembly 200, so that the lifting and unlocking slide plate 500 can move horizontally relative to the one-way locking groove 310 of the headrest rod 300, so that the lifting and unlocking slide plate 500 is away from the upward The locking groove, and then the user can move the floating headrest 100, the headrest lifting bracket 400 and other components upwards. When the user moves the floating headrest 100 downwards, the user triggers the headrest adjustment component 200 set on the floating headrest 100, and the headrest adjustment component 200 can drive the lifting and unlocking slide plate 500 to move, so that the lifting and unlocking slide plate 500 is separated from the bottom of the one-way locking groove 310 of the headrest rod 300, so that the lifting and unlocking slide plate can move downward relative to the headrest rod 300, thereby making the floating headrest 100, the headrest lifting bracket 400 and other components move downward.

[0055] See also Figure 1 - Fig.10As shown, in the optional scheme of this embodiment, the suspended headrest 100 has a headrest bracket 120, and the connecting rod 110 is arranged on the headrest bracket 120. The connecting rod 110 is connected to the headrest lifting bracket 400 by bolts; the headrest lifting bracket 400 is provided with a connecting hole 410 for the headrest rod 300 to pass through, and the headrest lifting bracket 400 is provided with a plurality of tight-fitting grooves 420, and the plurality of tight-fitting grooves 420 are all connected to the connecting hole 410, and a tight-fitting ring 430 is inserted in the tight-fitting groove 420, and the headrest rod 300 can pass through the tight-fitting ring 430; the tight-fitting ring 430 0 is provided with tight-fitting ribs 431 at the top and bottom so that the tight-fitting ring 430 is firmly fixed in the tight-fitting groove 420; a fixed half ring 432 and an elastic half ring 433 are provided inside the tight-fitting ring 430, the bottom of the elastic half ring 433 is fixedly connected to the tight-fitting ring 430, the inner wall of the tight-fitting ring 430 is provided with an elastic claw 434 on the upper part of the elastic half ring 433, an adjusting rod 435 is provided between the elastic claw 434 and the elastic half ring 433, an adjusting groove 436 is opened on the tight-fitting ring 430, and both ends of the adjusting rod 435 are located in the adjusting groove 436.

[0056] A limiting cross bar 320 is disposed on the top of the headrest rod 300 , and the rising height of the headrest lifting bracket 400 is limited by the limiting cross bar 320 .

[0057] Specifically, the headrest bracket 120 is connected to the headrest lifting bracket 400 through the connecting rod 110, so that the headrest bracket 120 and the headrest lifting bracket 400 can be lifted and lowered synchronously, and the headrest lifting bracket 400 is arranged in the seat back, which can reduce the thickness of the floating headrest 100 and realize the lifting and lowering of the floating headrest 100.

[0058] In addition, a connection hole 410 is provided on the headrest lifting bracket 400 , and the headrest rod 300 can be inserted into the connection hole 410 , and the connection hole 410 can be adapted to headrest rods 300 of different thicknesses. Before the headrest rod 300 is inserted into the connecting hole 410, a tight-fitting ring 430 is inserted into the tight-fitting groove 420 on the headrest lifting bracket 400. The headrest rod 300 can pass through the tight-fitting ring 430 at the same time when being inserted. The fixed half ring 432 and the elastic half ring 433 in the tight-fitting ring 430 can cooperate with the outer wall of the headrest rod 300. The adjusting rod 435 is slidably set in the adjusting groove 436. Under the action of the elastic claw 434, the adjusting rod 435 can press the elastic half ring 433 so that the upper part of the elastic half ring 433 tightly abuts against the outer wall of the headrest rod 300, so that the headrest rod 300 is clamped between the fixed half ring 432 and the elastic half ring 433, avoiding the shaking of the headrest rod 300, and at the same time ensuring that the headrest rod 300 can be stable after adjustment, and avoiding the shaking of the headrest rod 300 to produce abnormal noise.

[0059] In addition, tightening ribs 431 are provided at the bottom and top of the tightening ring 430 . The tightening ribs 431 can firmly fix the tightening ring 430 in the tightening groove 420 , thereby preventing the tightening ring 430 from shaking and generating abnormal noise.

[0060] See also Figure 1 - Fig.10 As shown, in the optional scheme of this embodiment, the headrest adjustment assembly 200 includes a trigger button 210, a return compression spring 220, an unlocking push plate 230 and an unlocking lever 240; a mounting groove 121 for mounting the trigger button 210 is provided on the headrest bracket 120, the trigger button 210 and the return compression spring 220 are mounted in the mounting groove 121, one end of the return compression spring 220 abuts against the trigger button 210, and the other end abuts against the mounting groove 121; the end of the trigger button 210 abuts against the unlocking push plate 230, and the unlocking push plate 230 abuts against the unlocking lever 240, so that the unlocking push plate 230 can drive the unlocking lever 240 to rotate; one end of the unlocking lever 240 is pivoted to the headrest bracket 120, and the other end is pivoted to the headrest lifting bracket 400, and the unlocking lever 240 is transmission connected with the lifting and unlocking slide plate 500.

[0061] Among them, an unlocking rotating plate 241 is arranged on the unlocking lever 240 , and an unlocking convex plate 510 adapted to the unlocking rotating plate 241 is arranged on the lifting and unlocking sliding plate 500 .

[0062] Among them, the unlocking lever 240 has an auxiliary rod 242 abutting against the unlocking push plate 230, and a first reset tension spring 243 is arranged between the auxiliary rod 242 and the headrest bracket 120; a second reset tension spring 520 is arranged between the lifting unlocking slide plate 500 and the headrest lifting bracket 400.

[0063] The lifting and unlocking slide plate 500 has a sliding hole 530 for the headrest rod 300 to pass through, and a mounting seat is provided on the lifting and unlocking slide plate 500 at the sliding hole 530 , and a limiting plate 540 for abutting against the one-way locking groove 310 is provided on the mounting seat.

[0064] Specifically, when the user needs to adjust the floating headrest 100 downward, the user presses the trigger button 210, and the trigger button 210 compresses the reset compression spring 220. The end of the trigger button 210 can pass through the through hole of the mounting slot 121 on the headrest bracket 120 to abut against the unlocking push plate 230, so that the trigger button 210 pushes the unlocking push plate 230 to move along the guide slide slot 122, and then the unlocking push plate 230 pushes the auxiliary rod 242 of the unlocking lever 240 to rotate, and the rotation of the auxiliary rod 242 drives the unlocking lever 240 to rotate. The rotation of the unlocking lever 240 can drive the unlocking rotating plate 241 to rotate, and the rotation of the unlocking rotating plate 241 can push the unlocking convex plate 510 on the lifting and unlocking slide plate 500 to move, so that the lifting and unlocking slide plate 500 moves along the unlocking slide slot 440 of the headrest lifting bracket 400, so that the limiting plate 540 on the lifting and unlocking slide plate 500 is away from the one-way locking slot 310, so that the floating headrest 100 can drive the headrest lifting bracket 400 to move downward.

[0065] See also Figure 1 - Fig.10 As shown, in an optional solution of this embodiment, a guide slot 122 for installing an unlocking push plate 230 is provided on the headrest bracket 120; a first abutting spring piece 231 is provided on the unlocking push plate 230 so that the unlocking push plate 230 can fit tightly with the guide slot 122.

[0066] Specifically, by providing the first abutting spring piece 231 on the unlocking push plate 230 , the unlocking push plate 230 can be closely matched with the guide slide groove 122 , thereby reducing the shaking of the unlocking push plate 230 and the probability of generating noise.

[0067] See also Figure 1 - Fig.10 As shown, in an optional scheme of the present embodiment, the headrest lifting bracket 400 is provided with an unlocking slide groove 440 for sliding the lifting and unlocking slide plate 500, the bottom and the top of the unlocking slide groove 440 are provided with a first sliding strip 441, the lifting and unlocking slide plate 500 is provided with a second sliding strip 550, and the first sliding strip 441 and the second sliding strip 550 intersect; the lifting and unlocking slide plate 500 is provided with a second abutting spring piece 560 so that the lifting and unlocking slide plate 500 and the unlocking slide groove 440 are tightly matched.

[0068] Specifically, a first sliding strip 441 is provided at the bottom and the top of the unlocking groove 440, and a second sliding strip 550 is provided on the lifting and unlocking slide 500. Through the cooperation of the first sliding strip 441 and the second sliding strip 550, the sliding friction of the lifting and unlocking slide 500 can be reduced, so that the unlocking lever 240 can smoothly drive the lifting and unlocking slide 500 to slide.

[0069] In addition, a second abutting spring piece 560 is provided on the lifting and unlocking slide plate 500. Through the provision of the second abutting spring piece 560, the lifting and unlocking slide plate 500 and the unlocking slide groove 440 are closely matched, thereby preventing the lifting and unlocking slide plate 500 from shaking and producing abnormal noise.

[0070] This embodiment provides a car seat, including a height-adjustable suspended headrest for the car seat.

[0071] Specifically, the car seat provided in this embodiment has the advantages of the above-mentioned height-adjustable car seat floating headrest compared with the prior art, which will not be described in detail here.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A height-adjustable suspended headrest for a car seat, characterized in that: include: A suspended headrest (100), a headrest adjustment assembly (200), a headrest rod (300), a headrest lifting bracket (400) and a lifting and unlocking slide plate (500); The headrest lifting bracket (400) is installed in the seat back, the headrest rod (300) is inserted into the headrest lifting bracket (400), the headrest adjustment assembly (200) is installed on the floating headrest (100), and the floating headrest (100) is installed on the headrest lifting bracket (400) via a connecting rod (110); The lifting and unlocking slide plate (500) is slidably arranged on the headrest lifting bracket (400), and the lifting and unlocking slide plate (500) can cooperate with the one-way locking groove (310) on the side wall of the headrest rod (300), and the headrest adjustment component (200) is transmission-connected with the lifting and unlocking slide plate (500), so that the headrest adjustment component (200) can drive the lifting and unlocking slide plate (500) to reciprocate; The bottom of the one-way locking groove (310) is a plane, and the top of the one-way locking groove (310) is an inclined surface. The lifting and unlocking slide plate (500) can abut against the bottom of the one-way locking groove (310), so that the lifting and unlocking slide plate (500) can freely move upward relative to the headrest rod (300).

2. The height-adjustable automobile seat suspension headrest according to claim 1, characterized in that: The suspended headrest (100) has a headrest bracket (120) therein, the connecting rod (110) is arranged on the headrest bracket (120), and the connecting rod (110) is connected to the headrest lifting bracket (400) via bolts; The headrest lifting bracket (400) is provided with a connection hole (410) for the headrest rod (300) to pass through, and the headrest lifting bracket (400) is provided with a plurality of tight-fitting grooves (420), the plurality of tight-fitting grooves (420) are all connected to the connection hole (410), a tight-fitting ring (430) is inserted in the tight-fitting groove (420), and the headrest rod (300) can pass through the tight-fitting ring (430); The top and bottom of the tight-fitting ring (430) are both provided with tight-fitting ribs (431) so that the tight-fitting ring (430) is firmly fixed in the tight-fitting groove (420); The tight-fitting ring (430) is provided with a fixed half ring (432) and an elastic half ring (433) inside, the bottom of the elastic half ring (433) is fixedly connected to the tight-fitting ring (430), the inner wall of the tight-fitting ring (430) is provided with an elastic claw (434) at the upper part of the elastic half ring (433), an adjustment rod (435) is provided between the elastic claw (434) and the elastic half ring (433), the tight-fitting ring (430) is provided with an adjustment groove (436), and the two ends of the adjustment rod (435) are located in the adjustment groove (436).

3. The height-adjustable automobile seat suspension headrest according to claim 2, characterized in that: The headrest adjustment assembly (200) comprises a trigger button (210), a return compression spring (220), an unlocking push plate (230) and an unlocking lever (240); The headrest bracket (120) is provided with a mounting groove (121) for mounting the trigger button (210); the trigger button (210) and the return compression spring (220) are mounted in the mounting groove (121); one end of the return compression spring (220) abuts against the trigger button (210), and the other end abuts against the mounting groove (121); The end of the trigger button (210) abuts against the unlocking push plate (230), and the unlocking push plate (230) abuts against the unlocking lever (240), so that the unlocking push plate (230) can drive the unlocking lever (240) to rotate; One end of the unlocking lever (240) is pivotally connected to the headrest bracket (120), and the other end is pivotally connected to the headrest lifting bracket (400). The unlocking lever (240) is transmission-connected to the lifting and unlocking slide plate (500).

4. The height-adjustable automobile seat suspension headrest according to claim 3, characterized in that: The headrest bracket (120) is provided with a guide slot (122) for installing the unlocking push plate (230); The unlocking push plate (230) is provided with a first abutting elastic sheet (231) so that the unlocking push plate (230) can be closely matched with the guide sliding groove (122).

5. The height-adjustable automobile seat suspension headrest according to claim 3, characterized in that: The unlocking lever (240) is provided with an unlocking rotating plate (241), and the lifting unlocking slide plate (500) is provided with an unlocking convex plate (510) adapted to match the unlocking rotating plate (241).

6. The height-adjustable automobile seat suspension headrest according to claim 5, characterized in that: The unlocking lever (240) is provided with an auxiliary rod (242) abutting against the unlocking push plate (230), and a first return tension spring (243) is arranged between the auxiliary rod (242) and the headrest bracket (120); A second return tension spring (520) is provided between the lifting and unlocking slide plate (500) and the headrest lifting bracket (400).

7. The height-adjustable automobile seat suspension headrest according to claim 6, characterized in that: The lifting and unlocking slide plate (500) is provided with a sliding hole (530) for the headrest rod (300) to pass through, and a mounting seat is provided on the lifting and unlocking slide plate (500) at the sliding hole (530), and a limiting plate (540) is provided on the mounting seat for abutting against the one-way locking groove (310).

8. The height-adjustable automobile seat suspension headrest according to claim 7, characterized in that: The headrest lifting bracket (400) is provided with an unlocking slide groove (440) for the lifting and unlocking slide plate (500) to slide, the bottom and top of the unlocking slide groove (440) are provided with a first sliding strip (441), the lifting and unlocking slide plate (500) is provided with a second sliding strip (550), and the first sliding strip (441) and the second sliding strip (550) intersect; The lifting and unlocking slide plate (500) is provided with a second abutting spring sheet (560) so that the lifting and unlocking slide plate (500) and the unlocking slide groove (440) can be closely matched.

9. The height-adjustable suspension headrest for a car seat according to any one of claims 1 to 8, characterized in that: A limiting cross bar (320) is arranged on the top of the headrest rod (300).

10. A car seat, characterized in that: The invention comprises the height-adjustable suspended headrest for a car seat as claimed in any one of claims 1 to 9.

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