A multi-angle adjustable headrest

Abstract

This invention discloses a multi-angle adjustable headrest, relating to the field of automotive headrest technology, aiming to solve the technical problem of insufficient functionality in existing automotive headrests. The headrest includes a main body, which integrates an adjustment mechanism, a sound-generating component, a linkage assembly, and a support assembly. The sound-generating component is hinged to the horizontal output end of the adjustment mechanism via the linkage assembly, and the support assembly is connected to the vertical output end via a force-reinforcing assembly. The support assembly includes a head support portion and a shoulder and neck support portion, the latter supporting the shoulders in a sitting position and the neck in a lying position. The sound-generating component, through the linkage assembly, achieves a state switching between being close to the ears in a sitting position to reduce audio interference and being flattened in a lying position to improve head comfort. This invention, through the above structure, achieves directional audio transmission and dynamic neck and head support, improving driving safety and riding comfort, and adapting to the needs of the rapid development of new energy vehicles.

Description

Technical Field

[0001] This invention relates to the field of automotive headrest technology, and more specifically, to a multi-angle adjustable headrest. Background Technology

[0002] In recent years, the new energy vehicle industry has shown rapid development, and consumers have increasingly stringent requirements for the intelligent and comfort features of automobiles. Against this backdrop, innovative features such as rear entertainment screens and one-touch reclining "zero-gravity" seats have emerged, greatly enhancing the driving and riding experience, but also placing higher demands on the function and performance of car headrests.

[0003] On the one hand, the widespread adoption of rear-seat entertainment screens has diversified in-car audio sources. In actual driving, the driver needs to focus on listening to navigation audio to ensure driving safety, while rear passengers or the front passenger may simultaneously play music or watch videos. When multiple audio sources play simultaneously, the sounds interfere with and overlap, easily causing the driver to miss or mishear crucial navigation information, leading to serious consequences such as taking the wrong route or even a traffic accident. Existing car headrests address the problem of multiple audio sources in the car by using a multi-channel approach, but the isolation effect is poor and cannot meet the safety needs of complex usage scenarios.

[0004] On the other hand, when passengers use the one-touch reclining "zero-gravity" seat function, existing car headrests struggle to provide adequate head and neck support. Due to the change in posture when lying down, the force distribution on the head and neck alters. Traditional headrests lack flexible adjustment mechanisms in terms of angle and support strength, failing to perfectly conform to the body's curves. Prolonged use can easily cause neck fatigue, soreness, and other discomfort, severely impacting seating comfort and failing to fully realize the seat's comfort advantages.

[0005] In summary, existing automotive headrests have significant functional shortcomings in addressing the new challenges brought about by the intelligent and comfortable development of new energy vehicles, and urgently need to be improved and perfected through technological innovation. Therefore, we propose a multi-angle adjustable headrest. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-angle adjustable headrest to solve the technical problem of insufficient functionality of existing automotive headrests.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a multi-angle adjustable headrest, comprising a headrest body, wherein an adjustment mechanism, a sound-generating component, a connecting rod component and a support component are arranged inside the headrest body;

[0008] The sound-generating component is hinged to the horizontal output end of the adjustment mechanism via the connecting rod assembly, and the support component is connected to the vertical output end of the adjustment mechanism via the force-reinforcing component.

[0009] The support component includes a head support and a shoulder and neck support. The shoulder and neck support has a sitting support state and a lying support state. In the sitting support state, it is convenient to support the user's shoulders, and in the lying support state, it is convenient to support the user's neck.

[0010] The sound-generating component has a seated, close-fitting state and a reclining, flat state via a linkage assembly. In the seated, close-fitting state, it is easy to get close to the ears of the driver and passengers to prevent multi-audio interference. In the reclining, flat state, it is easy to improve head comfort.

[0011] The adjustment mechanism includes a mounting plate, a fixed block, a swing block, and a movable rod; the mounting plates are symmetrically arranged on the inner wall of the headrest, the fixed blocks are arranged in a ring at equal intervals between the two mounting plates, the swing block is rotatably connected to the mounting plate, 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-generating component is hinged to the outer wall of the mounting plate.

[0012] Preferably, a set of horizontally arranged movable rods moves and drives the linkage assembly to cause the sound-generating component to fold inward or return to its original position, thereby switching the sound-generating component between a seated, close-fitting state and a reclining, flat state; when a set of vertically arranged movable rods moves, it drives the force-reinforcing component and the shoulder and neck support to switch between a seated, supportive state and a reclining, supportive state.

[0013] Preferably, the end of the sound-generating component away from the mounting plate is hinged to the horizontally arranged movable rod via the connecting rod assembly, and the support assembly is connected to the vertically arranged movable rod.

[0014] Preferably, one of the mounting plates has a protrusion on its outer wall, and a hinge is provided on the protrusion. The sound-generating component is rotatably connected to the protrusion through the hinge.

[0015] Preferably, the fixing block has sliding holes, wherein two sliding holes arranged diagonally are parallel.

[0016] Preferably, the swing block has symmetrically formed elongated holes, and a limiting rod is fixedly provided at one end of the movable rod near the swing block. The movable rod is slidably inserted into the elongated holes through the limiting rod. When the swing block rotates, the elongated holes on the swing block drive the limiting rod and the movable rod to slide on the sliding holes.

[0017] Preferably, a hinge hole is provided at one end of a horizontally arranged set of movable rods near the connecting rod assembly, and the end of the connecting rod assembly away from the sound-generating assembly is hinged to the hinge hole.

[0018] Preferably, the linkage assembly includes a hinge rod, a hinge block, and a rotating shaft. The hinge block is fixedly connected to the back of the sound-generating component at the end away from the mounting plate. One end of the hinge block is rotatably connected to the hinge hole via the rotating shaft, and the other end of the hinge block is rotatably connected to the hinge block via the rotating shaft. When the hinge hole moves outward, the hinge hole pushes the hinge rod and the hinge block, causing the sound-generating component to fold inward. When the hinge hole moves inward, the hinge hole pulls the hinge rod and the hinge block, causing the sound-generating component to return to its original position.

[0019] Preferably, the force-reinforcing assembly includes a mounting assembly, support block A, support block B, a sliding rod, a slider, a balance frame, and a rotating rod. The mounting assembly is symmetrically fixed to the inner wall of the headrest body. Support block A is fixed to the mounting assembly. Support block B is symmetrically arranged on the mounting assembly. One end of the sliding rod is fixedly connected to support block A, and the other end of the sliding rod is fixedly connected to support block B. The slider is slidably sleeved on the sliding rod. The balance frame is hinged to the two sliders. The shoulder and neck support is provided on the balance frame. One end of the rotating rod is hinged to the balance frame, and the other end of the rotating rod is hinged to the vertical output end of the adjustment mechanism.

[0020] Preferably, the movable rod at the bottom end is provided with a horizontal frame near the force-reinforcing assembly, and the end of the rotating rod away from the balance frame is hinged to the horizontal frame.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention integrates an adjustment mechanism, a sound-generating component, a linkage assembly, and a support assembly within the headrest body. The sound-generating component is hinged to the horizontal output end of the adjustment mechanism via the linkage assembly, and the support assembly is connected to the vertical output end via a force-reinforcing assembly. The support assembly includes a head support section and a shoulder and neck support section, the latter supporting the shoulders in a sitting position and the neck in a lying position. The sound-generating component, via the linkage assembly, allows for switching between a position close to the ears in a sitting position to reduce audio interference and a position flattened in a lying position to improve head comfort. This invention achieves directional audio transmission and dynamic neck and head support through the above structure, improving driving safety and riding comfort, and meeting the needs of the rapid development of new energy vehicles.

[0023] 2. This invention uses an adjustment mechanism to drive the sound-generating component to fold centripetally closer to the ear, forming a directional audio transmission path. Compared to the technology of simply fixing speakers near the headrest, this invention can actively and dynamically adjust the sound-generating position according to the needs of the driver and passengers, effectively reducing mutual interference from multiple audio sources in the vehicle. This significantly improves the clarity of navigation audio received by the driver, avoiding mishearing or missing information due to mixed sounds. From a structural design perspective, this invention breaks through the limitations of traditional passive speaker sound generation, greatly enhancing audio isolation and driving safety.

[0024] 3. In this invention, when the vertical output end of the adjustment mechanism drives the rotating rod, the rotating rod pulls or pushes the balance frame. With the assistance of the slider, the balance frame slides along the sliding rod and rotates around the hinge point, thereby causing the shoulder and neck support unit on the balance frame to switch between a sitting support state and a lying support state. In a sitting position, this structure can precisely adjust the angle of the shoulder and neck support unit to support the user's shoulders; in a lying position, it can adjust the shoulder and neck support unit to a suitable angle to support the neck, effectively meeting the human body support needs in different postures and improving user comfort and adaptability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the headrest body of the present invention installed on a car seat.

[0026] Figure 2 This is a cross-sectional view of the internal structure of the headrest body of the present invention.

[0027] Figure 3 This is a front structural diagram of the adjustment mechanism, sound-generating component, connecting rod assembly, and support assembly of the present invention.

[0028] Figure 4 This is a schematic diagram of the rear structure of the adjustment mechanism, sound-generating component, connecting rod assembly, and support assembly of the present invention.

[0029] Figure 5 This is a schematic diagram of the disassembled structure of the adjustment mechanism of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of the part of the adjustment mechanism used to drive the sound-generating component in the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of the drive support component in the adjustment mechanism of the present invention.

[0032] Figure 8 This is a schematic diagram of the motion path of the adjustment mechanism of the present invention.

[0033] Figure 9 This is a schematic diagram of another motion path of the adjustment mechanism of the present invention.

[0034] Figure 10 This is a schematic diagram of the connection structure between the linkage assembly, the adjustment mechanism, and the sound-generating assembly of the present invention.

[0035] Figure 11 This is a schematic diagram of the sound-generating component of the present invention in its folded-up front use state.

[0036] Figure 12 This is a schematic diagram of the sound-generating component of the present invention in its folded-back configuration.

[0037] Figure 13This is a schematic diagram of the composite force component structure of the present invention.

[0038] Figure 14 This is a schematic diagram illustrating the alignment of the human shoulder and neck curve with the shoulder and neck support portion according to the present invention.

[0039] Explanation of the labels in the diagram:

[0040] 4. Headrest body; 5. Adjustment mechanism; 6. Sound-generating component; 7. Linkage assembly; 8. Support assembly; 9. Force-reinforcing component;

[0041] 501. Mounting plate; 502. Fixing block; 503. Swinging block; 504. Movable rod;

[0042] 801. Head support section; 802. Neck and shoulder support section;

[0043] 5011, protrusion; 5012, hinge pin; 5021, sliding hole; 5031, elongated hole; 5041, limiting rod; 5042, hinge hole;

[0044] 701. Hinge rod; 702. Hinge block; 703. Rotating shaft;

[0045] 901. Mounting components; 902. Support block A; 903. Support block B; 904. Slide bar; 905. Slider; 906. Balance frame; 907. Rotating rod;

[0046] 5043, Horizontal rack. Detailed Implementation

[0047] like Figures 1 to 14 As shown, the present invention relates to a multi-angle adjustable headrest, including a headrest body 4, and an adjustment mechanism 5, a sound-generating component 6, a connecting rod component 7 and a support component 8 arranged inside the headrest body 4;

[0048] The sound-generating component 6 is hinged to the horizontal output end of the adjustment mechanism 5 via the connecting rod assembly 7, and the support component 8 is connected to the vertical output end of the adjustment mechanism 5 via the force-reinforcing assembly 9.

[0049] The support component 8 includes a head support 801 and a shoulder and neck support 802. The shoulder and neck support 802 has a sitting support state and a lying support state. In the sitting support state, it is convenient to support the user's shoulders, and in the lying support state, it is convenient to support the user's neck.

[0050] The sound-generating component 6 has a seated and flattened state via the linkage component 7. In the seated and flattened state, it is easy to get close to the ears of the driver and passengers to prevent multi-audio interference. In the flattened state, it is easy to improve head comfort.

[0051] The adjustment mechanism 5 includes a mounting plate 501, a fixed block 502, a swing block 503, and a movable rod 504. The mounting plates 501 are symmetrically arranged on the inner wall of the headrest body 4. The fixed blocks 502 are arranged in a ring with equal spacing 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. One end of the sound-generating component 6 is hinged to the outer wall of the mounting plate 501.

[0052] In the adjustment mechanism 5 of the present invention, the mounting plate 501 and the fixing block 502 form a stable frame. When the swing block 503 rotates, its elongated hole 5031 drives the movable rod 504 to slide within the sliding hole 5021 of the fixing block 502, realizing the horizontal and vertical movement output. In the horizontal direction, the movable rod 504 drives the connecting rod assembly 7, which drives the sound-generating assembly 6 to fold centripetally close to the driver's ears when sitting, reducing external audio interference. When lying down, it returns to its original flat position, improving the comfort of head placement. In the vertical direction, the movable rod 504 drives the shoulder and neck support part 802 of the support assembly 8 through the force-reinforcing assembly 9, supporting the user's shoulders when sitting and adjusting to support the neck when lying down, meeting the ergonomic needs of different postures and improving the overall user experience of the headrest.

[0053] In an embodiment of the present invention, a set of horizontally arranged movable rods 504 move and drive the connecting rod assembly 7 to cause the sound-generating assembly 6 to fold inward or reset, so that the sound-generating assembly 6 switches between a seated and flattened state; when a set of vertically arranged movable rods 504 move, they drive the force-reinforcing assembly 9 and the shoulder and neck support 802 to switch between a seated and flattened state.

[0054] In an embodiment of the present invention, the end of the sound-generating component 6 away from the mounting plate 501 is hinged to the horizontally arranged movable rod 504 via the connecting rod assembly 7, and the support assembly 8 is connected to the vertically arranged movable rod 504.

[0055] In an embodiment of the invention, one of the mounting plates 501 has a protrusion 5011 on its outer wall, and a hinge 5012 on the protrusion 5011. The sound-generating component 6 is rotatably connected to the protrusion 5011 via the hinge 5012. This structural design provides a pivot point for the sound-generating component 6, allowing it to fold around the hinge 5012. When the horizontally arranged movable rod 504 pushes the sound-generating component 6 via the connecting rod assembly 7, the sound-generating component 6 can fold centripetally around the hinge 5012, thus bringing it closer to the ears of the driver and passengers, achieving the function of directional audio transmission and isolation of multi-audio interference. This hinged structure ensures the stability and accuracy of the sound-generating component 6's movement and is a key support structure for achieving the anti-audio interference function.

[0056] In an embodiment of the present invention, a sliding hole 5021 is provided on the fixed block 502, wherein two sliding holes 5021 arranged diagonally are parallel. This design allows the movable rod 504 to slide in a parallel direction within the sliding hole 5021, providing guidance and constraint for the movement of the movable rod 504, ensuring the stability of its sliding trajectory on the fixed block 502, and thus ensuring the accuracy and consistency of the adjustment mechanism 5 when driving the sound-generating component 6 and the support component 8.

[0057] In another embodiment of the present invention, the swing block 503 is symmetrically provided with elongated holes 5031, and the movable rod 504 is fixedly provided with a limiting rod 5041 near one end of the swing block 503. The movable rod 504 is slidably inserted into the elongated hole 5031 through the limiting rod 5041. When the swing block 503 rotates, the elongated hole 5031 on the swing block 503 drives the limiting rod 5041 and the movable rod 504 to slide on the sliding hole 5021. This structure converts the rotational motion of the swing block 503 into the linear motion of the movable rod 504 through the cooperation of the elongated hole 5031 and the limiting rod 5041. When the swing block 503 rotates, the trajectory of the elongated hole 5031 forces the limiting rod 5041 to move along the direction of the sliding hole 5021, thereby pushing the movable rod 504 to slide on the fixed block 502, realizing the horizontal or vertical displacement output. This design provides a stable transmission method for the adjustment mechanism 5, ensuring that the sliding trajectory of the movable rod 504 is precise and controllable, thereby making the movement of the sound-generating component 6 and the support component 8 more stable and improving the reliability and consistency of the headrest adjustment.

[0058] In another embodiment of the present invention, a set of horizontally arranged movable rods 504 have a hinge hole 5042 at one end near the connecting rod assembly 7, and the end of the connecting rod assembly 7 away from the sound-generating component 6 is hinged to the hinge hole 5042. This structural design establishes a hinged transmission node between the movable rods 504 and the connecting rod assembly 7. When the movable rods 504 slide in the sliding hole 5021 of the fixed block 502, the connecting rod assembly 7 can be driven to move through the hinge hole 5042, thereby pushing the sound-generating component 6 to fold or reset centripetally with the hinge shaft 5012 on the protrusion 5011 on the outer wall of the mounting plate 501 as the fulcrum, realizing the function of the sound-generating component 6 being close to the ears of the driver and passengers to isolate multi-frequency interference. This hinged structure ensures the stability of motion transmission between the movable rods 504 and the connecting rod assembly 7, making the folding action of the sound-generating component 6 more precise and controllable.

[0059] In another embodiment of the present invention, the linkage 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 component 6 away from the mounting plate 501. One end of the hinge block 702 is rotatably connected to the hinge hole 5042 via the rotating shaft 703, and the other end of the hinge block 702 is rotatably connected to the hinge block 702 via the rotating shaft 703. When the hinge hole 5042 moves outward, it pushes the hinge rod 701 and the hinge block 702, causing the sound-generating component 6 to fold inward. When the hinge hole 5042 moves inward, it pulls the hinge rod 701 and the hinge block 702, causing the sound-generating component 6 to return to its original position. This linkage assembly 7 converts the linear motion of the movable rod 504 into the folding action of the sound-generating component 6 through a hinge structure, and utilizes the rotational characteristics of the rotating shaft 703 to achieve bidirectional transmission, ensuring the stability and resettlement of the action, and improving the reliability of the anti-audio interference function.

[0060] In another embodiment of the present invention, the force-reinforcing component 9 includes an installation component 901, a support block A902, a support block B903, a slide rod 904, a slider 905, a balance frame 906, and a rotating rod 907. The installation component 901 is symmetrically fixed on the inner wall of the headrest body 4. The support block A902 is fixed on the installation component 901. The support block B903 is symmetrically arranged on the installation component 901. One end of the slide rod 904 is fixedly connected to the support block A902, and the other end of the slide rod 904 is fixedly connected to the support block B903. The slider 905 is slidably sleeved on the slide rod 904. The balance frame 906 is hinged to the two sliders 905. The shoulder and neck support part 802 is provided on the balance frame 906. One end of the rotating rod 907 is hinged to the balance frame 906, and the other end of the rotating rod 907 is hinged to the vertical output end of the adjustment mechanism 5.

[0061] See Figure 13 and Figure 14 In this invention, the mounting component 901 is fixed to the inner wall of the headrest body 4, providing a stable support base for the entire component; support block A902 and support block B903 cooperate to fix the sliding rod 904, allowing the slider 905 to slide smoothly on it, forming a motion track. Support block A902 is located between the two support blocks B903, and the height of support block A902 is greater than the height of support block B903, which causes the two sliding rods 904 connecting support block A902 and support block B903 to be symmetrically inclined.

[0062] Therefore, when the vertical output end of the adjustment mechanism 5 drives the rotating rod 907 to move, the rotating rod 907 pulls or pushes the balance frame 906. With the assistance of the slider 905, the balance frame 906 slides along the sliding rod 904 and rotates around the hinge point, thereby causing the shoulder and neck support 802 mounted on the balance frame 906 to switch between a sitting support state and a lying support state. In a sitting position, this structure can precisely adjust the angle of the shoulder and neck support 802 to support the user's shoulders; in a lying position, it can adjust the shoulder and neck support 802 to a suitable angle to support the neck, effectively meeting the human body support needs in different postures and improving user comfort and adaptability.

[0063] In another embodiment of the present invention, the movable rod 504 at the bottom end is provided with a horizontal frame 5043 near the force-reinforcing assembly 9, and the rotating rod 907 is hinged to the horizontal frame 5043 at the end away from the balance frame 906.

[0064] In this embodiment, a stable transmission connection is established between the adjustment mechanism 5 and the force-reinforcing component 9 by setting a horizontal frame 5043 at the bottom of the movable rod 504 and hinged the rotating rod 907 to the horizontal frame 5043. When the movable rod 504 in the adjustment mechanism 5 moves in the vertical direction, the horizontal frame 5043 moves accordingly, causing the rotating rod 907 hinged to it to rotate and shift, thereby pushing the balance frame 906 to slide along the slide rod 904, realizing the switching of the shoulder and neck support part 802 between sitting and lying support states.

[0065] Working principle: This embodiment provides a multi-angle adjustable headrest. In use, the swing block 503 is driven by a motor to rotate around the mounting plate 501. The symmetrical elongated holes 5031 on the swing block 503 cooperate with the limiting rod 5041 at the end of the movable rod 504 to convert the rotational motion of the swing block 503 into the linear motion of the movable rod 504 in the sliding hole 5021 of the fixed block 502.

[0066] When the horizontally arranged movable rod 504 moves outward, it pushes the linkage assembly 7 through the hinge hole 5042 at its end. The hinge rod 701 and hinge block 702 in the linkage assembly 7 are linked by the rotating shaft 703, causing the sound-generating component 6 to fold inward around the hinge shaft 5012 on the outer wall protrusion 5011 of the mounting plate 501, bringing the sound-generating component 6 closer to the ears of the driver and passengers. This structural design forms a directional audio transmission path, effectively isolating interference from multiple audio sources such as the rear entertainment screen, ensuring the driver clearly receives navigation information and improving driving safety. When the movable rod 504 moves inward, the linkage assembly 7 pulls the sound-generating component 6 back to its original position.

[0067] When the vertical output end of the adjustment mechanism 5 drives the rotating rod 907 to move, the rotating rod 907 pulls or pushes the balance frame 906. With the assistance of the slider 905, the balance frame 906 slides along the sliding rod 904 and rotates around the hinge point, thereby causing the shoulder and neck support 802 mounted on the balance frame 906 to switch between a sitting support state and a lying support state. In a sitting position, this structure can precisely adjust the angle of the shoulder and neck support 802 to support the user's shoulders; in a lying position, it can adjust the shoulder and neck support 802 to a suitable angle to support the neck, effectively meeting the human body support needs in different postures and improving user comfort and adaptability.

[0068] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A multi-angle adjustable headrest, characterized in that, It includes a headrest body (4), and an adjustment mechanism (5), a sound-generating component (6), a connecting rod component (7), and a support component (8) are arranged inside the headrest body (4). The sound-generating component (6) is hinged to the horizontal output end of the adjustment mechanism (5) via the connecting rod assembly (7), and the support component (8) is connected to the vertical output end of the adjustment mechanism (5) via the force-reinforcing component (9). The support component (8) includes a head support (801) and a shoulder and neck support (802). The shoulder and neck support (802) has a sitting support state and a lying support state. In the sitting support state, it is convenient to support the user's shoulders, and in the lying support state, it is convenient to support the user's neck. The sound-generating component (6) has a seated and flattened state via the linkage component (7). In the seated and flattened state, it is easy to get close to the ears of the driver and passengers to prevent multi-audio interference. In the flattened state, it is easy to improve head comfort. The adjustment mechanism (5) includes a mounting plate (501), a fixing 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 fixing block (502) is arranged in a ring at equal intervals 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 fixing 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 hinged to the outer wall of the mounting plate (501); A set of horizontally arranged movable rods (504) moves and drives the connecting rod assembly (7) to cause the sound-generating assembly (6) to fold inward or reset, so that the sound-generating assembly (6) switches between a seated and flattened state; when a set of vertically arranged movable rods (504) moves, it drives the force-reinforcing assembly (9) and the shoulder and neck support (802) to switch between a seated and flattened state.

2. The multi-angle adjustable headrest according to claim 1, characterized in that, The sound-generating component (6) is hinged to the horizontally arranged movable rod (504) at the end away from the mounting plate (501) via the connecting rod assembly (7), and the support assembly (8) is connected to the vertically arranged movable rod (504).

3. The multi-angle adjustable headrest according to claim 1, characterized in that, One of the mounting plates (501) has a protrusion (5011) on its outer wall, and a hinge (5012) is provided on the protrusion (5011). The sound-generating component (6) is rotatably connected to the protrusion (5011) through the hinge (5012).

4. The multi-angle adjustable headrest according to claim 1, characterized in that, The fixing block (502) has a sliding hole (5021), wherein two sliding holes (5021) arranged diagonally are parallel.

5. A multi-angle adjustable headrest according to claim 4, characterized in that, The swing block (503) has symmetrically arranged elongated holes (5031). The movable rod (504) has a limiting rod (5041) fixed at one end near the swing block (503). The movable rod (504) is slidably inserted into the elongated hole (5031) through the limiting rod (5041). When the swing block (503) rotates, the elongated hole (5031) on the swing block (503) drives the limiting rod (5041) and the movable rod (504) to slide on the sliding hole (5021).

6. A multi-angle adjustable headrest according to claim 1, characterized in that, A set of horizontally arranged movable rods (504) has a hinge hole (5042) at one end near the connecting rod assembly (7), and the end of the connecting rod assembly (7) away from the sound-generating assembly (6) is hinged to the hinge hole (5042).

7. A multi-angle adjustable headrest according to claim 6, characterized in that, The linkage 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). 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 inward. 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 return to its original position.

8. A multi-angle adjustable headrest according to claim 1, characterized in that, The compound force assembly (9) includes an installation assembly (901), support block A (902), support block B (903), slide rod (904), slider (905), balance frame (906), and rotating rod (907). The installation assembly (901) is symmetrically fixed on the inner wall of the headrest body (4). The support block A (902) is fixed on the installation assembly (901). The support block B (903) is symmetrically arranged on the installation assembly (901). One end of the slide rod (904) is fixedly connected to the support block A (902). On support block A (902), the other end of the slide rod (904) is fixedly connected to support block B (903), the slider (905) is slidably sleeved on the slide rod (904), the balance frame (906) is hinged to the two sliders (905), the shoulder and neck support (802) is provided on the balance frame (906), one end of the rotating rod (907) is hinged to the balance frame (906), and the other end of the rotating rod (907) is hinged to the vertical output end of the adjustment mechanism (5).

9. A multi-angle adjustable headrest according to claim 8, characterized in that, The movable rod (504) located at the bottom end has a horizontal frame (5043) near the end of the force-reinforcing assembly (9), and the rotating rod (907) is hinged to the horizontal frame (5043) at the end away from the balance frame (906).

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