Multi-angle adjustable headrest

Abstract

The invention discloses a multi-angle adjustable headrest, relates to the technical field of automobile headrests, and aims at solving the technical problem that an existing automobile headrest is insufficient in functionality. The multi-angle adjustable headrest comprises a headrest body, and an adjusting mechanism, a sound production assembly, a connecting rod assembly and a supporting assembly are integrated in the headrest body; the sounding assembly is hinged to the horizontal output end of the adjusting mechanism through the connecting rod assembly, and the supporting assembly is connected to the vertical output end through the force restoring assembly. The supporting assembly comprises a head supporting part and a shoulder and neck supporting part, and the shoulder and neck supporting part can support the shoulders in the sitting posture and support the neck in the lying posture; the sound production assembly achieves state switching of being close to ears to resist audio interference in the sitting posture and being flattened to improve the comfort of the head in the lying posture through the connecting rod assembly. Through the structure, audio directional transmission and neck dynamic supporting are achieved, driving safety and riding comfort are improved, and the high-speed development requirements of new energy automobiles are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile headrests, and more particularly to a multi-angle adjustable headrest. BACKGROUND

[0002] In recent years, the new energy vehicle industry has shown rapid development, and consumers' requirements for vehicle intelligence and comfort configuration have become increasingly stringent. Under this background, innovative configurations such as rear entertainment screens and one-key reclining "zero-gravity" seats have emerged, greatly improving the driving experience, but also putting higher requirements on the function and performance of automobile headrests. On the one hand, the popularity of rear entertainment screens has made the audio sources in the vehicle diversified. In actual driving, the main driver needs to focus on listening to navigation audio to ensure driving safety, while the rear passengers or co-driver passengers may play music or watch videos at the same time. When multiple audios are played simultaneously, the sounds interfere with and overlap each other, which can easily cause the driver to miss or mishear critical navigation information, and even cause wrong routes or traffic accidents and other serious consequences. The existing automobile headrests solve the problem of multiple audio interference in the vehicle by using a multi-channel approach, but the isolation effect is poor and it is difficult to meet the safety needs in complex use scenarios.

[0003] On the other hand, when the driver uses the one-key reclining "zero-gravity" seat function, the existing automobile headrests cannot provide good head and neck support. Due to the change in posture when the human body is lying down, the stress distribution of the head and neck changes, and the traditional headrest lacks a flexible adjustment mechanism in terms of angle and support strength, and cannot perfectly match the human body curve, which can easily cause the driver to feel neck fatigue, soreness and other discomfort after a long time of use, seriously affecting the comfort of riding and failing to fully utilize the comfort advantages of the seat.

[0004] In summary, the existing automobile headrests have obvious functional shortcomings in dealing with the new challenges brought about by the intelligentization and comfort development of new energy vehicles, and need to be improved and perfected through technical innovation. In view of this, we propose a multi-angle adjustable headrest. SUMMARY

[0005] The purpose of the present application is to provide a multi-angle adjustable headrest to solve the technical problem of insufficient functionality of existing automobile headrests.

[0006] To solve the above technical problems, the present application provides the following technical solution: a multi-angle adjustable headrest, comprising a headrest main body, wherein an adjusting mechanism, a sound producing assembly, a connecting rod assembly and a support assembly are arranged in the headrest main body; The sound producing assembly is connected to the horizontal output end of the adjusting mechanism through the connecting rod assembly, and the support assembly is connected to the vertical output end of the adjusting mechanism through a complex force assembly; The support assembly comprises a head support part and a shoulder-neck support part, and the shoulder-neck support part has a sitting posture support state and a lying posture support state, in which the sitting posture support state is convenient for supporting the shoulder of the user, and the lying posture support state is convenient for supporting the neck of the user. The sound production assembly has a sitting posture fitting state and a lying posture unfolding state through the connecting rod assembly, in which the sitting posture fitting state is convenient for being close to the ear of the driver and preventing multi-audio interference, and the lying posture unfolding state is convenient for improving the head comfort. The adjusting mechanism comprises mounting plates, fixed blocks, swing blocks and movable rods, the mounting plates are symmetrically arranged on the inner walls of the headrest, the fixed blocks are annularly and equidistantly arranged between the two mounting plates, the swing blocks are rotationally connected to the mounting plates, one end of the movable rod is movably inserted into the fixed block, the other end of the movable rod is slidably connected to the end of the swing block, and one end of the sound production assembly is hingedly connected to the outer wall of the mounting plate.

[0007] Preferably, the horizontal arrangement of a group of movable rods moves and drives the connecting rod assembly to make the sound production assembly fold inward or reset, so that the sound production assembly switches between the sitting posture fitting state and the lying posture unfolding state; when the vertical arrangement of a group of movable rods moves, the sound production assembly drives the complex force assembly and the shoulder-neck support part to switch between the sitting posture support state and the lying posture support state.

[0008] Preferably, the sound production assembly is hingedly connected to the horizontal arrangement of the movable rods through the connecting rod assembly at one end away from the mounting plate, and the support assembly is connected to the vertical arrangement of the movable rods.

[0009] Preferably, the outer wall of one of the mounting plates is provided with a protrusion, and the protrusion is provided with a hinge shaft, and the sound production assembly is rotationally connected to the protrusion through the hinge shaft.

[0010] Preferably, the fixed block is provided with diagonal arrangement of two sliding holes in parallel.

[0011] Preferably, the swing block is symmetrically provided with a long hole, and the movable rod is fixedly provided with a limiting rod at one end close to the swing block, and the movable rod is slidably inserted into the long hole through the limiting rod, and when the swing block rotates, the long hole on the swing block drives the limiting rod and the movable rod to slide on the sliding hole.

[0012] Preferably, one end of the horizontal arrangement of a group of movable rods is provided with a hinge hole close to the connecting rod assembly, and the other end of the connecting rod assembly away from the sound production assembly is hingedly connected to the hinge hole.

[0013] Preferably, the connecting rod assembly comprises a hinge rod, a hinge block and a rotating shaft, one end of the hinge block is fixedly connected to the back of the sound generating assembly away from the mounting plate, one end of the hinge block is rotatably connected to the hinge hole through the rotating shaft, the other end of the hinge block is rotatably connected to the hinge block through the rotating shaft, when the hinge hole moves outward, the hinge hole pushes the hinge rod and the hinge block to make the sound generating assembly fold inward, when the hinge hole moves inward, the hinge hole pulls the hinge rod and the hinge block to make the sound generating assembly recover.

[0014] Preferably, the complex force assembly comprises a mounting assembly, a support block A, a support block B, a sliding rod, a sliding block, a balance frame and a rotating rod, the mounting assembly is symmetrically fixedly arranged on the inner wall of the headrest main body, the support block A is fixedly arranged on the mounting assembly, the support block B is symmetrically arranged on the mounting assembly, one end of the sliding rod is fixedly connected to the support block A, the other end of the sliding rod is fixedly connected to the support block B, the sliding block is slidably sleeved on the sliding rod, the balance frame is hingedly connected to the two sliding blocks, the shoulder and neck supporting part is arranged on the balance frame, one end of the rotating rod is hingedly connected to the balance frame, and the other end of the rotating rod is hingedly connected to the vertical output end of the adjusting mechanism.

[0015] Preferably, the horizontal frame is arranged at one end of the rotating rod away from the balance frame.

[0016] Compared with the prior art, the present application has the following advantages: 1、The adjusting mechanism, the sound generating assembly, the connecting rod assembly and the supporting assembly are integrated in the headrest main body, the sound generating assembly is hingedly connected to the horizontal output end of the adjusting mechanism through the connecting rod assembly, and the supporting assembly is connected to the vertical output end through the complex force assembly; the supporting assembly comprises a head supporting part and a shoulder and neck supporting part, the latter can support the shoulder in a sitting position and support the neck in a lying position; the sound generating assembly realizes the state switching of being close to the ear in a sitting position to resist audio interference and being flattened in a lying position to improve the comfort of the head; the present application realizes audio directional transmission and neck and head dynamic support through the above structure, improves driving safety and riding comfort, and meets the demand for the rapid development of new energy vehicles.

[0017] 2、The adjusting mechanism drives the sound generating assembly to fold inward to be close to the ear, forming a directional audio transmission path, compared with the technology of fixedly arranging a loudspeaker near the headrest, the sound generating position can be actively adjusted dynamically according to the driving demand, the mutual interference of multiple audio sources in the vehicle is effectively reduced, the intelligibility of the navigation audio received by the driver is significantly improved, mishearing or information omission caused by mixed sound is avoided, the limitation of passive sound generation of the traditional loudspeaker is broken through in the structure design, and the audio isolation effect and driving safety are greatly enhanced.

[0018] 3、The vertical output end of the adjusting mechanism drives the rotating rod to move, the rotating rod pulls or pushes the balance frame, the balance frame slides along the slide rod under the assistance of the slide block, rotates around the hinge point, and drives the shoulder and neck supporting part arranged on the balance frame to switch between the sitting posture supporting state and the lying posture supporting state. When sitting, the structure can accurately adjust the angle of the shoulder and neck supporting part to support the user's shoulder; when lying, the shoulder and neck supporting part can be adjusted to the appropriate angle to support the neck, effectively meeting the human body supporting demand in different postures, and improving the use comfort and adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure diagram of the headrest body of the application is installed on the automobile seat.

[0020] Figure 2 The structure diagram of the headrest body of the application is installed on the automobile seat.

[0021] Figure 3 The front structure diagram of the adjusting mechanism, the sound producing assembly, the connecting rod assembly and the supporting assembly of the application.

[0022] Figure 4 The back structure diagram of the adjusting mechanism, the sound producing assembly, the connecting rod assembly and the supporting assembly of the application.

[0023] Figure 5 The split structure diagram of the adjusting mechanism of the application.

[0024] Figure 6 The part structure diagram for driving the sound producing assembly in the adjusting mechanism of the application.

[0025] Figure 7 The part structure diagram for driving the supporting assembly in the adjusting mechanism of the application.

[0026] Figure 8 The motion path diagram of the adjusting mechanism of the application.

[0027] Figure 9 The motion path diagram of the adjusting mechanism of the application.

[0028] Figure 10 The connection structure diagram of the connecting rod assembly, the adjusting mechanism and the sound producing assembly of the application.

[0029] Figure 11 The folding front use state diagram of the sound producing assembly of the application.

[0030] Figure 12 The folding back use state diagram of the sound producing assembly of the application.

[0031] Figure 13It is a schematic structural diagram of the compound force component of the present invention.

[0032] Figure 14 It is a schematic diagram of the coordination between the human shoulder and neck curve and the shoulder and neck supporting part of the present invention.

[0033] Description of the numbers in the figure: 4. Headrest body; 5. Adjustment mechanism; 6. Sounding assembly; 7. Connecting rod assembly; 8. Support assembly; 9. Restoring assembly; 501, mounting plate; 502, fixed block; 503, swing block; 504, movable rod; 801, head support part; 802, shoulder and neck support part; 5011, bump; 5012, hinge shaft; 5021, sliding hole; 5031, long hole; 5041, limit rod; 5042, reaming hole; 701, hinge rod; 702, hinge block; 703, rotating shaft; 901, mounting assembly; 902, support block A; 903, support block B; 904, slide bar; 905, slider; 906, balance frame; 907, rotating rod; 5043, horizontal rack. DETAILED DESCRIPTION

[0034] like Figures 1 to 14 As shown, the present invention relates to a multi-angle adjustable headrest, comprising a headrest body 4, in which an adjustment mechanism 5, a sound generating assembly 6, a connecting rod assembly 7 and a supporting assembly 8 are arranged; The sound generating assembly 6 is hingedly connected to the horizontal output end of the adjusting mechanism 5 through the connecting rod assembly 7, and the supporting assembly 8 is connected to the vertical output end of the adjusting mechanism 5 through the compound force assembly 9; The support assembly 8 includes a head support portion 801 and a shoulder and neck support portion 802. The shoulder and neck support portion 802 has a sitting support state and a lying support state. In the sitting support state, it is convenient for supporting the user's shoulders. In the lying support state, it is convenient for supporting the user's neck. The sound-generating assembly 6 has a sitting position fit state and a lying position flat state through the connecting rod assembly 7. In the sitting position fit state, it is convenient to be close to the ears of the driver and passengers to prevent multi-audio interference. In the lying position flat state, it is convenient to improve head comfort. The adjustment mechanism 5 includes a mounting plate 501, a fixed block 502, a swing block 503 and a movable rod 504; the mounting plate 501 is symmetrically arranged on the inner wall of the headrest body 4, the fixed block 502 is arranged in a ring shape and equidistantly between the two mounting plates 501, the swing block 503 is rotatably connected to the mounting plate 501, one end of the movable rod 504 is movably inserted into the fixed block 502, and the other end of the movable rod 504 is slidably connected to the end of the swing block 503, and one end of the sound-generating component 6 is hingedly connected to the outer wall of the mounting plate 501.

[0035] In the adjusting mechanism 5 of the present application, the mounting plate 501 and the fixed block 502 construct a stable frame. When the swing block 503 rotates, the long hole 5031 of the swing block 503 drives the movable rod 504 to slide in the sliding hole 5021 of the fixed block 502, realizing the movement output in the horizontal and vertical directions. In the horizontal direction, the movable rod 504 drives the connecting rod assembly 7, drives the sound emitting assembly 6 to fold towards the center in the sitting position, reduces the external audio interference, and resets and flattens in the lying position, improving the comfort of placing the head. In the vertical direction, the movable rod 504 drives the shoulder and neck supporting part 802 of the supporting assembly 8 through the compound force assembly 9, supports the user's shoulder in the sitting position, and adjusts to support the neck in the lying position, meeting the ergonomic needs in different postures, and improving the overall use experience of the headrest.

[0036] In the embodiment of the present application, the movement of the horizontally arranged group of movable rods 504 drives the connecting rod assembly 7 to make the sound emitting assembly 6 fold towards the center or reset, so that the sound emitting assembly 6 switches between the sitting position fitting state and the lying position flattening state. When the vertically arranged group of movable rods 504 moves, it drives the compound force assembly 9 and the shoulder and neck supporting part 802 to switch between the sitting position supporting state and the lying position supporting state.

[0037] In the embodiment of the present application, the sound emitting assembly 6 is connected to the horizontally arranged movable rod 504 through the connecting rod assembly 7 at the end away from the mounting plate 501, and the supporting assembly 8 is connected to the vertically arranged movable rod 504.

[0038] In the embodiment of the present application, one of the mounting plates 501 is provided with a protrusion 5011, and the protrusion 5011 is provided with a hinge shaft 5012. The sound emitting assembly 6 is connected to the protrusion 5011 through the hinge shaft 5012. This structure provides a rotating fulcrum for the sound emitting assembly 6, so that the sound emitting assembly 6 can fold around the hinge shaft 5012. When the horizontally arranged movable rod 504 pushes the sound emitting assembly 6 through the connecting rod assembly 7, the sound emitting assembly 6 can fold towards the center around the hinge shaft 5012, thereby approaching the ear of the driver, realizing the function of directional audio transmission and isolation of multiple audio interference. The hinge structure ensures the stability and accuracy of the action of the sound emitting assembly 6, and is a key supporting structure for realizing the anti-audio interference function.

[0039] In the embodiment of the present application, the fixed block 502 is provided with a sliding hole 5021, and the two sliding holes 5021 arranged diagonally are in parallel. This design makes the movable rod 504 slide in the sliding hole 5021 in the parallel direction, provides guidance and constraint for the movement of the movable rod 504, ensures the stability of the sliding track of the movable rod 504 on the fixed block 502, and further ensures the accuracy and consistency of the action of the adjusting mechanism 5 driving the sound emitting assembly 6 and the supporting assembly 8.

[0040] As another embodiment of the application, a long hole 5031 is symmetrically formed on the swing block 503, a limiting rod 5041 is fixedly arranged on one end of the movable rod 504 close to the swing block 503, and the movable rod 504 is slidably arranged in the long hole 5031 through the limiting rod 5041. When the swing block 503 rotates, the long hole 5031 on the swing block 503 drives the limiting rod 5041 and the movable rod 504 to slide on the sliding hole 5021. The structure converts the rotary motion of the swing block 503 into the linear motion of the movable rod 504 through the cooperation of the long hole 5031 and the limiting rod 5041. When the swing block 503 rotates, the trajectory of the long hole 5031 forces the limiting rod 5041 to move along the sliding hole 5021, thereby pushing the movable rod 504 to slide on the fixed block 502, and realizing the displacement output in the horizontal or vertical direction. The design provides a stable transmission mode for the adjusting mechanism 5, ensures the accurate and controllable sliding trajectory of the movable rod 504, and thus makes the actions of the sound generating assembly 6 and the supporting assembly 8 more stable, and improves the reliability and consistency of the headrest adjustment.

[0041] As another embodiment of the application, a hinge hole 5042 is formed on one end of a group of movable rods 504 arranged horizontally, and the link assembly 7 is hingedly connected to the hinge hole 5042 away from the sound generating assembly 6. This structure design builds a hinged transmission node between the movable rod 504 and the link assembly 7. When the movable rod 504 slides in the sliding hole 5021 of the fixed block 502, the link assembly 7 can be driven to act through the hinge hole 5042, thereby pushing the sound generating assembly 6 to fold or reset around the hinge shaft 5012 on the outer wall protrusion 5011 of the mounting plate 501 as the fulcrum, and realizing the function of isolating the sound generating assembly 6 close to the ears of the driver or passenger to isolate the multi-audio interference. The hinged structure ensures the stability of the motion transmission between the movable rod 504 and the link assembly 7, and makes the folding action of the sound generating assembly 6 more accurate and controllable.

[0042] As another embodiment of the application, the link assembly 7 includes a hinge rod 701, a hinge block 702, and a rotating shaft 703. The hinge block 702 is fixedly connected to the back of the sound generating assembly 6 away from the mounting plate 501, one end of the hinge block 702 is rotatably connected to the hinge hole 5042 through the rotating shaft 703, and the other end of the hinge block 702 is rotatably connected to the hinge block 702 through the rotating shaft 703. When the hinge hole 5042 moves outward, the hinge hole 5042 pushes the hinge rod 701 and the hinge block 702 to make the sound generating assembly 6 fold inward, and when the hinge hole 5042 moves inward, the hinge hole 5042 pulls the hinge rod 701 and the hinge block 702 to make the sound generating assembly 6 recover. The link assembly 7 converts the linear motion of the movable rod 504 into the folding action of the sound generating assembly 6 through the hinged structure, realizes bidirectional transmission by the rotating property of the rotating shaft 703, ensures the stability and resetability of the action, and improves the reliability of the anti-audio interference function.

[0043] As another embodiment of the present application, the compound force assembly 9 comprises a mounting assembly 901, a support block A 902, a support block B 903, a slide rod 904, a slide block 905, a balance frame 906, and a rotating rod 907. The mounting assembly 901 is symmetrically fixed on the inner wall of the headrest main body 4. The support block A 902 is fixed on the mounting assembly 901. The support block B 903 is symmetrically arranged on the mounting assembly 901. One end of the slide rod 904 is fixedly connected to the support block A 902. The other end of the slide rod 904 is fixedly connected to the support block B 903. The slide block 905 is slidably sleeved on the slide rod 904. The balance frame 906 is hingedly connected to the two slide blocks 905. The shoulder and neck supporting part 802 is arranged on the balance frame 906. One end of the rotating rod 907 is hingedly connected to the balance frame 906. The other end of the rotating rod 907 is hingedly connected to the vertical output end of the adjusting mechanism 5.

[0044] Referring to Figure 13 and Figure 14 , in the present application, the mounting assembly 901 is fixed on the inner wall of the headrest main body 4, providing a stable support basis for the entire assembly. The support block A 902 cooperates with the support block B 903 to fix the slide rod 904, enabling the slide block 905 to smoothly slide thereon, forming a movement track. Among them, the support block A 902 is located between the two support blocks B 903, and the height of the support block A 902 is greater than the height of the support block B 903, which causes the two slide rods 904 connected between the support block A 902 and the support block B 903 to be symmetrically inclined; Therefore, when the vertical output end of the adjusting mechanism 5 drives the rotating rod 907 to move, the rotating rod 907 pulls or pushes the balance frame 906, which slides along the slide rod 904 with the assistance of the slide block 905, and rotates around the hinge point, thereby driving the shoulder and neck supporting part 802 arranged on the balance frame 906 to switch between the sitting posture supporting state and the lying posture supporting state. In the sitting posture, this structure can accurately adjust the angle of the shoulder and neck supporting part 802 to support the user's shoulder. In the lying posture, it can also adjust the shoulder and neck supporting part 802 to the appropriate angle to support the neck, effectively meeting the human body support needs in different postures, and improving the comfort and adaptability of use.

[0045] As another embodiment of the present application, the movable rod 504 at the bottom end is provided with a horizontal frame 5043 near one end of the compound force assembly 9. The other end of the rotating rod 907 away from the balance frame 906 is hingedly connected to the horizontal frame 5043.

[0046] In the embodiment, the stable transmission connection between the adjusting mechanism 5 and the compound force assembly 9 is constructed by arranging the horizontal frame 5043 at the bottom end of the movable rod 504 and hingedly connecting the rotating rod 907 to the horizontal frame 5043. When the movable rod 504 in the adjusting mechanism 5 moves in the vertical direction, the horizontal frame 5043 moves along, drives the rotating rod 907 hingedly connected thereto to rotate and displace, and then pushes the balance frame 906 to slide along the slide rod 904, so as to realize the switching of the shoulder and neck supporting part 802 between the sitting posture supporting state and the lying posture supporting state.

[0047] Working principle: the embodiment provides a multi-angle adjustable headrest. When in use, the swing block 503 is driven to rotate around the mounting plate 501 by the motor. The symmetrical long holes 5031 on the swing block 503 cooperate with the limiting rods 5041 at the end of the movable rod 504, so as to convert the rotary motion of the swing block 503 into the linear motion of the movable rod 504 in the sliding hole 5021 in the fixed block 502. When the horizontally arranged movable rod 504 moves outward, the hinged hole 5042 at the end pushes the connecting rod assembly 7. The hinge rod 701 and the hinge block 702 in the connecting rod assembly 7 are linked through the rotating shaft 703, drive the sound emitting assembly 6 to fold inwards around the hinge shaft 5012 on the outer wall protrusion 5011 of the mounting plate 501 as the fulcrum, and make the sound emitting assembly 6 close to the ear of the driver or passenger. This structure design forms a directional audio transmission path, effectively isolates the interference of multiple audio sources such as the rear entertainment screen, and ensures that the driver clearly receives the navigation information, thereby improving the driving safety. When the movable rod 504 moves inward, the connecting rod assembly 7 pulls the sound emitting assembly 6 to return to the original position. When the vertical output end of the adjusting mechanism 5 drives the rotating rod 907 to act, the rotating rod 907 pulls or pushes the balance frame 906, the balance frame 906 slides along the slide rod 904 under the assistance of the slide block 905, rotates around the hinge point, and then drives the shoulder and neck supporting part 802 arranged on the balance frame 906 to switch between the sitting posture supporting state and the lying posture supporting state. In the sitting posture, the structure can accurately adjust the angle of the shoulder and neck supporting part 802 to support the shoulder of the user; in the lying posture, the shoulder and neck supporting part 802 can also be adjusted to the appropriate angle to support the neck, effectively meeting the human body supporting needs in different postures, and improving the use comfort and adaptability.

[0048] The embodiment of the application discloses the preferred embodiment, but is not limited thereto. Those skilled in the art can easily understand the spirit of the application according to the above embodiment, and make different inferences and changes, as long as they do not deviate from the spirit of the application, and are within the protection scope of the application.

Claims

1. A multi-angle adjustable headrest, characterized in that: It comprises a headrest body (4), wherein an adjustment mechanism (5), a sound generating assembly (6), a connecting rod assembly (7) and a supporting assembly (8) are arranged in the headrest body (4); The sound generating assembly (6) is hingedly connected to the horizontal output end of the regulating mechanism (5) via the connecting rod assembly (7), and the supporting assembly (8) is connected to the vertical output end of the regulating mechanism (5) via the re-force assembly (9); The support assembly (8) comprises a head support portion (801) and a shoulder and neck support portion (802), wherein the shoulder and neck support portion (802) has a sitting support state and a lying support state, and is convenient for supporting the user's shoulders in the sitting support state, and is convenient for supporting the user's neck in the lying support state; The sound-generating component (6) has a sitting position fit state and a lying position flattened state through the connecting rod component (7). In the sitting position fit state, it is convenient to be close to the ears of the driver and passenger to prevent multi-audio interference, and in the lying position flattened state, it is convenient to improve the comfort of the head; The adjustment mechanism (5) comprises a mounting plate (501), a fixed block (502), a swing block (503) and a movable rod (504); the mounting plate (501) is symmetrically arranged on the inner wall of the headrest body (4); the fixed block (502) is arranged in a ring shape and equidistantly between the two mounting plates (501); the swing block (503) is rotatably connected to the mounting plate (501); one end of the movable rod (504) is movably inserted into the fixed block (502); the other end of the movable rod (504) is slidably connected to the end of the swing block (503); and one end of the sound generating component (6) is hingedly connected to the outer wall of the mounting plate (501).

2. The multi-angle adjustable headrest according to claim 1, characterized in that: A group of the movable rods (504) arranged horizontally moves and drives the connecting rod assembly (7) to cause the sound-generating assembly (6) to be folded centripetally or reset, so that the sound-generating assembly (6) switches between a sitting position fitting state and a lying position flattened state; when a group of the movable rods (504) arranged vertically moves, it drives the restoring assembly (9) and the shoulder and neck support part (802) to switch between a sitting position support state and a lying position support state.

3. The multi-angle adjustable headrest according to claim 1, characterized in that: The end of the sound-generating component (6) away from the mounting plate (501) is hingedly connected to the horizontally arranged movable rod (504) through the connecting rod component (7), and the supporting component (8) is connected to the vertically arranged movable rod (504).

4. The multi-angle adjustable headrest according to claim 1, characterized in that: A protrusion (5011) is provided on the outer wall of one of the mounting plates (501), a hinge shaft (5012) is provided on the protrusion (5011), and the sound-generating component (6) is rotatably connected to the protrusion (5011) via the hinge shaft (5012).

5. The multi-angle adjustable headrest according to claim 1, characterized in that: The fixing block (502) is provided with a sliding hole (5021), wherein the two sliding holes (5021) arranged diagonally are in parallel.

6. The multi-angle adjustable headrest according to claim 5, characterized in that: The swing block (503) is symmetrically provided with long holes (5031), and a limiting rod (5041) is fixedly provided on one end of the movable rod (504) close to the swing block (503). The movable rod (504) is slidably inserted into the long hole (5031) through the limiting rod (5041). When the swing block (503) rotates, the long hole (5031) on the swing block (503) drives the limiting rod (5041) and the movable rod (504) to slide on the sliding hole (5021).

7. The multi-angle adjustable headrest according to claim 1, characterized in that: A group of horizontally arranged movable rods (504) are provided with a reaming hole (5042) at one end close to the connecting rod assembly (7), and an end of the connecting rod assembly (7) away from the sound generating assembly (6) is hingedly connected to the reaming hole (5042).

8. The multi-angle adjustable headrest according to claim 7, characterized in that: The connecting rod assembly (7) includes a hinge rod (701), a hinge block (702) and a rotating shaft (703), wherein the hinge block (702) is fixedly connected to one end of the back of the sound-generating assembly (6) away from the mounting plate (501), one end of the hinge block (702) is rotatably connected to the hinge hole (5042) through the rotating shaft (703), and the other end of the hinge block (702) is rotatably connected to the hinge block (702) through the rotating shaft (703). When the hinge hole (5042) moves outward, the hinge hole (5042) pushes the hinge rod (701) and the hinge block (702) to cause the sound-generating assembly (6) to fold centripetally. When the hinge hole (5042) moves inward, the hinge hole (5042) pulls the hinge rod (701) and the hinge block (702) to cause the sound-generating assembly (6) to recover.

9. The multi-angle adjustable headrest according to claim 1, characterized in that: The re-force component (9) comprises a mounting component (901), a support block A (902), a support block B (903), a slide bar (904), a slider (905), a balance frame (906) and a rotating rod (907), wherein the mounting component (901) is symmetrically fixed on the inner wall of the headrest body (4), the support block A (902) is fixed on the mounting component (901), the support block B (903) is symmetrically arranged on the mounting component (901), and one end of the slide bar (904) is fixedly connected to the support block A (902). On the support block A (902), the other end of the slide rod (904) is fixedly connected to the support block B (903), the slider (905) is slidably mounted on the slide rod (904), the balance frame (906) is hingedly connected to the two sliders (905), the shoulder and neck support part (802) is arranged on the balance frame (906), one end of the rotating rod (907) is hingedly connected to the balance frame (906), and the other end of the rotating rod (907) is hingedly connected to the vertical output end of the adjustment mechanism (5).

10. The multi-angle adjustable headrest according to claim 9, characterized in that: The movable rod (504) at the bottom end is provided with a horizontal frame (5043) at one end close to the re-force component (9), and the rotating rod (907) is hingedly connected to the horizontal frame (5043) at one end away from the balancing frame (906).

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