Headrest, seat and vehicle

Abstract

The application relates to the technical field of vehicle headrests, aims to solve the problem of how to reduce headrest sound leakage, and provides a headrest, a seat and a vehicle. The headrest comprises a shell, a loudspeaker and a sound-absorbing piece. The shell is provided with a mounting cavity, the mounting cavity has a front wall and a rear wall opposite in the X-axis direction of the vehicle, and the front wall is provided with a sound outlet hole. The loudspeaker is mounted on the front wall, and the sound outlet end of the loudspeaker is communicated with the sound outlet hole. The sound-absorbing piece is arranged in the mounting cavity, the sound-absorbing piece defines a first sound-absorbing cavity, the first sound-absorbing cavity extends in the X-axis direction, and one end of the first sound-absorbing cavity in the X-axis direction of the vehicle is provided with a first opening. The application has the beneficial effect that the sound transmitted into the mounting cavity by the loudspeaker can enter the first sound-absorbing cavity through the first opening, the sound is blocked by the cavity wall and then dissipated, or the sound is blocked by the cavity wall and then reflected, the sound leakage of the loudspeaker in the X-axis direction towards the side close to the rear wall is reduced, the sound of the loudspeaker is more concentratedly transmitted towards the side close to the front wall, and the auditory experience of the driver and the passenger is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle headrest technology, and more specifically, to headrests, seats, and vehicles. Background Technology

[0002] Related technologies include a headrest for vehicles that achieves desired functionality by incorporating speakers within the headrest.

[0003] However, the headrests in these technologies are prone to sound leakage, which affects the auditory experience. Summary of the Invention

[0004] This application provides headrests, seats, and vehicles to address the issue of reducing headrest sound leakage.

[0005] According to one aspect of this application, a headrest is provided, including a housing, a speaker, and a muffler. The housing has a mounting cavity having a front wall and a rear wall opposite each other along the X-axis direction of the vehicle, and the front wall has a sound outlet. The speaker is mounted on the front wall, and the speaker's sound outlet end communicates with the sound outlet. The muffler is disposed in the mounting cavity, defining a first muffler cavity extending along the X-axis direction, and one end of the first muffler cavity along the X-axis direction has a first opening.

[0006] The aforementioned headrest, by incorporating a sound-absorbing component within the mounting cavity, defines a first sound-absorbing chamber. One end of the first sound-absorbing chamber along the X-axis has a first opening, allowing sound from the speaker entering the mounting cavity to pass through this opening. When sound from the speaker enters the first sound-absorbing chamber, it diffuses to the chamber wall. The sound is either blocked by the wall and dissipates, or reflected, causing a disruption in the sound propagation direction along the X-axis towards the rear wall. This reduces sound leakage from the speaker towards the rear wall along the X-axis, allowing the sound to propagate more concentrated towards the front wall, thus reducing interference with other occupants and improving the listening experience for passengers.

[0007] In some embodiments, there are multiple first silencing cavities, which are staggered in a plane perpendicular to the X-axis.

[0008] In some embodiments, the muffler further defines a plurality of second muffler cavities. The plurality of second muffler cavities are divided into two groups, and the two groups of second muffler cavities are respectively disposed on both sides of the muffler along the Y-axis direction of the vehicle. The second muffler cavities extend along the Y-axis direction, and a second opening is provided on the side of the second muffler cavities away from the other group of second muffler cavities along the Y-axis direction.

[0009] In some embodiments, the headrest further includes a mesh structure. The mesh structure protrudes from the rear wall near the front wall and forms multiple sound-absorbing spaces.

[0010] In some embodiments, the first opening is opposite to the anechoic space along the X-axis.

[0011] In some embodiments, the housing includes a front cover and a rear cover, the rear cover fitting over the front cover along the X-axis to form a mounting cavity, the front cover having a front wall on the side near the rear cover, and the rear cover having a rear wall on the side near the front cover. The rear cover has a cavity. The headrest also includes sound-insulating material filling the cavity.

[0012] In some embodiments, the rear cover includes a rear cover inner shell and a rear cover outer shell. Along the X-axis direction of the vehicle, the rear cover outer shell covers the rear cover inner shell on the side of the rear cover outer shell away from the front cover to define a cavity between the rear cover outer shell and the rear cover inner shell.

[0013] In some embodiments, a sound insulation element is provided at the connection between the rear cover and the front cover; and / or, the edge of the rear cover is provided with a flange extending into the mounting cavity, and the front cover is fitted onto the side of the flange away from the mounting cavity.

[0014] According to another aspect of this application, a seat is provided, including a seat body and a headrest as described in any of the above embodiments, the headrest being mounted on the seat body.

[0015] According to another aspect of this application, a vehicle is provided, including a seat as described in the above embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of a vehicle according to one embodiment of this application.

[0018] Figure 2 for Figure 1 A front view of the seat in the illustrated embodiment.

[0019] Figure 3 for Figure 1 A schematic diagram of the headrest in the illustrated embodiment.

[0020] Figure 4 for Figure 1 A partial structural diagram of the headrest in the illustrated embodiment.

[0021] Figure 5 for Figure 1 An exploded view of the headrest in the illustrated embodiment.

[0022] Figure 6 for Figure 1 A schematic diagram of the silencing component in the illustrated embodiment.

[0023] Figure 7 for Figure 1 A schematic diagram of the silencing component in the illustrated embodiment from another perspective.

[0024] Figure 8 for Figure 1 An exploded view of the headrest in the illustrated embodiment from another perspective.

[0025] Figure 9 for Figure 1 A cross-sectional view of the headrest in the illustrated embodiment.

[0026] Figure 10 for Figure 1 A schematic diagram of the structure of the inner shell of the rear cover in the embodiment shown.

[0027] Figure 11 for Figure 1 A schematic diagram of the structure of the back cover in the illustrated embodiment.

[0028] Figure 12 for Figure 1 A partial structural cross-sectional view of the headrest in the illustrated embodiment.

[0029] Explanation of key component symbols: Vehicle 2000 1000 seats Headrest 100 Casing 10 Mounting cavity 10a 10b of sound outlet Anterior wall 10a1 posterior wall 10a2 Front cover 11 111 protrusions Back cover 12 Cavity 12a Back cover inner shell 121 Flip-edge 1211 Back cover 122 Silencer 30 First silencing chamber 30a First opening 30b Second silencing chamber 30c Second opening 30e 40 card connectors Support column 50 Mesh structure 60 60a silencing space Sound insulation material 70 Foam 80 Through hole 80a Seat body 200 The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Example To meet functional requirements, a headrest for vehicle seats has been provided in the related technology, in which a speaker is arranged. However, the headrest in the related technology is prone to sound leakage, which affects the auditory experience.

[0035] The inventors of this application discovered that the aforementioned problem arises because, in order to integrate the speaker into the headrest, the speaker needs to adapt to the limited space inside the headrest. Therefore, the speaker enclosure has a specific shape to fit the internal space of the headrest. However, an enclosure with a specific geometry produces more sound wave reflections and uncontrolled emissions than a traditional audio speaker, resulting in chaotic sound wave propagation direction, severe sound leakage, and thus affecting the user experience.

[0036] This embodiment provides a headrest, seat, and vehicle that can solve the above-mentioned problems, reduce sound leakage from the headrest, and thus improve the auditory experience. The following will describe the invention in conjunction with the accompanying drawings.

[0037] Figure 1 This is a front view of a vehicle 2000 according to an embodiment of this application; Figure 2 for Figure 1 A front view of the seat 1000 in the illustrated embodiment; Figure 3 for Figure 1 A schematic diagram of the headrest 100 in the illustrated embodiment.

[0038] See Figure 1 and Figure 2 This embodiment provides a vehicle 2000, including a seat 1000.

[0039] See Figure 2 and Figure 3 The seat 1000 provided in this embodiment includes a seat body 200 and a headrest 100. The headrest 100 is installed on the seat body 200 and is used to provide protection and comfortable support for the head of the driver and passenger.

[0040] Figure 4 for Figure 1 A partial structural schematic diagram of the headrest 100 in the illustrated embodiment; Figure 5 for Figure 1 Exploded view of the headrest 100 in the illustrated embodiment; Figure 6 for Figure 1 A schematic diagram of the structure of the noise reduction component 30 in the embodiment shown.

[0041] See Figures 3 to 5 The headrest 100 provided in this embodiment includes a housing 10, a speaker (not shown), and a sound-absorbing component 30. The housing 10 is provided with a mounting cavity 10a (see...). Figure 5 The mounting cavity 10a has a front wall 10a1 and a rear wall 10a2 opposite to each other along the X-axis direction of the vehicle 2000. The front wall 10a1 is provided with a sound outlet 10b. The speaker is mounted on the front wall 10a1, and the speaker's sound outlet end communicates with the sound outlet 10b. A muffler 30 is provided in the mounting cavity 10a, combined with... Figure 6 As shown, the muffler 30 defines a first muffler cavity 30a, which extends along the X-axis direction, and one end of the first muffler cavity 30a along the X-axis direction is provided with a first opening 30b.

[0042] Thus, by providing a sound-absorbing component 30 within the mounting cavity 10a, which defines a first sound-absorbing cavity 30a, and having a first opening 30b at one end along the X-axis, sound transmitted from the speaker into the mounting cavity 10a can enter the first sound-absorbing cavity 30a through the first opening 30b. When the sound emitted by the speaker enters the first sound-absorbing cavity 30a, it diffuses to the cavity wall and dissipates or is reflected after being blocked by the cavity wall. This causes a disruption in the propagation direction of the sound along the X-axis towards the rear wall 10a2, thereby reducing sound leakage from the speaker towards the rear wall 10a2 along the X-axis and allowing the sound from the speaker to propagate more concentratedly towards the front wall 10a1. This reduces the interference of sound leakage to other occupants in the vehicle and improves the auditory experience for the driver and passengers.

[0043] It should be noted that the X-axis of vehicle 2000 refers to the front-to-back direction of vehicle 2000, the Y-axis of vehicle 2000 refers to the width direction of vehicle 2000, and the Z-axis of vehicle 2000 refers to the height direction of vehicle 2000. In use, the front wall 10a1 is located on the side of mounting cavity 10a along the X-axis closer to the front of the vehicle, and the rear wall 10a2 is located on the side of mounting cavity 10a along the X-axis further away from the front of the vehicle. When seated, since the driver's and passenger's ears are located on the side of headrest 100 along the X-axis closer to the front of the vehicle, the sound emitted by the speaker is smoothly transmitted to the ears through the sound outlet 10b of the front wall 10a1, while the sound damper 30 reduces the sound emitted by the speaker from the rear wall 10a2.

[0044] When in use, the headrest 100 can be positioned in the driver's seat to provide the driver with navigation instructions, call privacy, safety warnings, and vehicle status notifications. The headrest 100 can also be positioned in the passenger seat or the rear seats of the vehicle to create a multimodal in-cabin experience, personalized audio settings, emergency broadcasts, and enhanced entertainment. When the headrest 100 is positioned in the driver's or passenger's seat, it reduces sound emitted from the speakers on the rear wall 10a2, improving the auditory experience for rear passengers and preventing interference.

[0045] In some embodiments, such as Figure 6 As shown, there are multiple first silencing cavities 30a, which are staggered in a plane perpendicular to the X-axis. By providing multiple first silencing cavities 30a, the sound from the speaker enters different first silencing cavities 30a, causing the sound to be blocked and reflected more frequently by the cavity walls of the first silencing cavities 30a, thereby improving the silencing effect of the silencing component 30.

[0046] In some embodiments, such as Figure 6 As shown, multiple first silencing cavities 30a are arranged along the Y-axis and Z-axis directions respectively, so as to make more reasonable use of the space inside the silencing component 30.

[0047] In some embodiments, such as Figure 6 As shown, at least two first silencing cavities 30a have different dimensions along the Y-axis and at least two first silencing cavities 30a have different dimensions along the Z-axis, making the shapes of at least two first silencing cavities 30a different. This makes the propagation direction of sound along the X-axis towards the rear wall 10a2 more disordered, further improving the silencing effect.

[0048] Figure 7 for Figure 1 A schematic diagram of the structure of the muffler 30 in the illustrated embodiment from another perspective.

[0049] In some embodiments, such as Figure 7 As shown, the muffler 30 further defines a plurality of second muffler cavities 30c. The plurality of second muffler cavities 30c are divided into two groups, with each group located on one side of the muffler 30 along the Y-axis of the vehicle 2000. The second muffler cavities 30c extend along the Y-axis, and a second opening 30e is provided on the side of each second muffler cavity 30c away from the other group along the Y-axis. This allows the loudspeaker to pass through the mounting cavity 10a (see...). Figure 5 The sound inside can enter the second silencing cavity 30c through the second opening 30e. When the sound diffuses to the cavity wall in the second silencing cavity 30c, it is blocked and dissipated by the cavity wall, or reflected by the cavity wall, causing the direction of sound propagation to be disordered. This reduces the sound leakage of the speaker to the side of the housing 10 along the Y-axis, and makes the sound of the speaker propagate more concentrated towards the front wall 10a1. Therefore, it further improves the listening experience of the driver and passengers and further reduces the interference of sound leakage to other people in the vehicle.

[0050] In some embodiments, such as Figure 7 As shown, the multiple second silencing cavities 30c in the same group are arranged along the Z-axis direction, which helps to increase the distribution range of the multiple second silencing cavities 30c along the Z-axis direction, thereby further reducing sound leakage to the side of the housing 10.

[0051] In some embodiments, combined with Figure 6 and Figure 7 As shown, multiple first silencing chambers 30a are respectively disposed at the lower part of the silencing component 30, and multiple second silencing chambers 30c are respectively disposed at the upper part of the silencing component 30, so as to respectively disrupt the sound at different positions along the Z-axis. The lower part of the silencing component 30 refers to the portion of the silencing component 30 away from the roof along the Z-axis, and the upper part of the silencing component 30 refers to the portion of the silencing component 30 closer to the roof along the Z-axis.

[0052] Figure 8 for Figure 1 An exploded view of the headrest 100 in the illustrated embodiment from another perspective.

[0053] In some embodiments, such as Figure 8 As shown, the headrest 100 also includes a snap-fit ​​member 40, which is located on the side of the front wall 10a1 along the X-axis direction near the rear wall 10a2. The snap-fit ​​member 40 passes through the muffler 30 so that the muffler 30 is fixed relative to the housing 10.

[0054] In some embodiments, such as Figure 8 As shown, the headrest 100 also includes a support column 50, which passes through the housing 10 along the X-axis. One end of the support column 50, extending into the mounting cavity 10a, passes through the muffler 30. The support member has a wiring channel, and the headrest 100 also includes a connecting harness (not shown), which passes through the wiring channel and is electrically connected to the speaker. Optionally, the support column 50 is mounted to the muffler 30 via a snap-fit ​​structure.

[0055] In some embodiments, combined with Figure 2 and Figure 3 As shown, the end of the support column 50 away from the headrest 100 passes through the seat body 200 to install the headrest 100 onto the seat body 200.

[0056] Figure 9 for Figure 1 A cross-sectional view of the headrest 100 in the illustrated embodiment; Figure 10 for Figure 1 A schematic diagram of the structure of the inner shell 121 of the rear cover in the embodiment shown.

[0057] In some embodiments, such as Figure 9 and Figure 10 As shown, the headrest 100 also includes a mesh structure 60, which protrudes from the rear wall 10a2 near the front wall 10a1 (see...). Figure 8 On one side of the wall 10a2, the mesh structure 60 forms multiple sound-absorbing spaces 60a. In this way, by setting the mesh structure 60, the sound transmitted from the loudspeaker to the rear wall 10a2 is blocked by the mesh structure 60 and dissipated or reflected after entering the sound-absorbing space 60a, which further causes the sound to be disturbed when it propagates along the X-axis towards the rear wall 10a2, thereby reducing sound leakage to the outside of the rear wall 10a2.

[0058] In some embodiments, such as Figure 10 As shown, multiple silencing spaces 60a are arranged along the Y-axis and X-axis directions respectively, so as to make more reasonable use of the space in front of the rear wall 10a2.

[0059] In some embodiments, such as Figure 9As shown, the first opening 30b and the anechoic space 60a are opposite each other along the X-axis, so that the sound propagating from the speaker toward the opposite sides in the X-axis direction can enter the anechoic space 60a and the first opening 30b respectively, so as to further reduce the sound leakage to the rear wall 10a2.

[0060] In some embodiments, such as Figure 8 and Figure 9 As shown, the housing 10 includes a front cover 11 and a rear cover 12. The rear cover 12 fits onto the front cover 11 along the X-axis direction of the vehicle 2000 to form a mounting cavity 10a. The front cover 11 has a front wall 10a1 on the side near the rear cover 12, and the rear cover 12 has a rear wall 10a2 on the side near the front cover 11. The rear cover 12 has a cavity 12a, and the headrest 100 also includes sound-insulating material 70 (such as sound-insulating foam 80), which fills the cavity 12a. Thus, by providing sound-insulating material 70, the airtightness of the mounting cavity 10a is enhanced, further reducing sound leakage from the rear cover 12.

[0061] It should be noted that in related technologies, due to the special shape of the speaker enclosure within the headrest, standing waves are prone to occur. This can amplify and / or weaken certain frequencies in the sound emitted by the speaker, and also cause uncertainty in the direction of sound wave transmission, leading to sound leakage and a degraded listening experience. In the above embodiment, by incorporating sound-insulating material 70, excess sound waves are absorbed, standing waves and echoes are reduced, thereby improving sound quality. Optionally, the sound-insulating material 70 covers the rear wall area 10a2.

[0062] In some embodiments, such as Figure 9 As shown, the headrest 100 also includes foam 80, which is fitted onto the outside of the front cover 11. Foam 80 has a through hole 80a communicating with the sound outlet 10b. In this way, by providing foam 80, the head of the driver and passenger is supported and comfort is improved. By providing through hole 80a, the foam 80 is prevented from blocking the sound output end of the speaker, thereby reducing sound wave loss during the transmission of sound from the speaker to the human ear.

[0063] Figure 11 for Figure 1 A schematic diagram of the structure of the back cover 12 in the embodiment shown.

[0064] In some embodiments, such as Figure 11 As shown, the rear cover 12 includes an inner rear cover shell 121 and an outer rear cover shell 122. Along the X-axis, the outer rear cover shell 122 covers the inner rear cover shell 121 away from the front cover 11 (see...). Figure 8 On one side of the rear cover, a cavity 12a is defined between the rear cover outer shell 122 and the rear cover inner shell 121. Thus, by providing the rear cover inner shell 121 and the rear cover outer shell 122, the thickness of the rear cover 12 is increased, and the airtightness of the rear cover 12 to the mounting cavity 10a is further improved, thereby further blocking sound from escaping from the rear cover 12.

[0065] Optionally, the outer shell 122 and the inner shell 121 of the rear cover are joined by ultrasonic welding or hot stamping. For example... Figure 11 As shown, the mesh structure 60 is disposed on the side of the inner shell 121 of the rear cover close to the front cover 11 along the X-axis direction.

[0066] In some embodiments, a sound-insulating element (not shown) is provided at the connection between the rear cover 12 and the front cover 11 to improve the airtightness of the mounting cavity 10a, thereby reducing sound diffusion from the connection between the front cover 11 and the rear cover 12 to the surroundings, thus improving sound quality and preventing sound leakage from affecting the auditory experience of other occupants in the vehicle. Optionally, the sound-insulating element is made of a sound-insulating material, such as sound-insulating foam.

[0067] Optionally, such as Figure 8 As shown, the front cover 11 has a protrusion 111 that extends along the edge of the front cover 11, the rear cover 12 is fitted over the protrusion 111, and the sound insulation component is provided on the outside of the protrusion 111.

[0068] In some embodiments, the sound insulation element is disposed around the edge of the front cover 11 to further improve the airtightness of the mounting cavity 10a, thereby more effectively reducing the diffusion of sound in all directions. In other embodiments, the sound insulation element is disposed on a portion of the edge of the front cover 11 to facilitate manufacturing and reduce costs.

[0069] Figure 12 for Figure 1 A partial structural cross-sectional view of the headrest 100 in the illustrated embodiment.

[0070] In some embodiments, such as Figure 11 As shown, the edge of the rear cover 12 is provided with a flange 1211 extending into the mounting cavity 10a, combined with... Figure 12 As shown, the front cover 11 is fitted onto the side of the flange 1211 away from the mounting cavity 10a. This overlaps the front cover 11 and the flange 1211, improving the structural stability of the headrest 100. Optionally, the flange 1211 is located on the side of the rear cover inner shell 121 away from the rear cover outer shell 122.

[0071] In some embodiments, such as Figure 11 As shown, the flange 1211 is disposed on a portion of the edge of the back cover 12. In other embodiments, the flange 1211 is disposed around the edge of the back cover 12 (not shown).

[0072] The headrest 100, by incorporating a first sound-absorbing cavity 30a and a sound-absorbing space 60a, and by placing sound-insulating material 70 within the rear cover 12, reduces sound dispersion outwards from the rear cover 12. Furthermore, by incorporating a second sound-absorbing cavity 30c, a flange 1211, and sound-insulating components, it reduces sound leakage around the rear cover 12. Therefore, the headrest 100 effectively controls sound diffusion, ensuring the directionality of sound propagation and allowing the sound emitted by the speakers to propagate more concentratedly forward, thereby improving sound quality and the auditory experience of the driver and passengers. By reducing sound leakage, the headrest 100 also improves the auditory experience of other occupants within the vehicle 2000, preventing interference caused by the diffuse propagation of sound.

[0073] It should be noted that some related technologies provide a headrest that uses external or side-mounted speaker placement, which is costly and poses safety hazards. The aforementioned headrest 100 reduces modifications to the traditional structure of the headrest 100, ensuring both the aesthetics of the interior and the comfort of the ride.

[0074] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A headrest, characterized in that, include: The housing has a mounting cavity, the mounting cavity having a front wall and a rear wall opposite each other along the X-axis direction of the vehicle, the front wall having a sound outlet hole; A loudspeaker is mounted on the front wall, and the sound outlet of the loudspeaker is connected to the sound outlet hole; as well as, A muffler is disposed in the mounting cavity, the muffler defining a first muffler cavity, the first muffler cavity extending along the X-axis direction, and a first opening provided at one end of the first muffler cavity along the X-axis direction; the muffler also defines a plurality of second muffler cavities; the plurality of second muffler cavities are divided into two groups, the two groups of second muffler cavities are respectively disposed on both sides of the muffler along the Y-axis direction of the vehicle, and the second muffler cavities extend along the Y-axis direction.

2. The headrest according to claim 1, characterized in that: There are multiple first silencing cavities, which are staggered in a plane perpendicular to the X-axis direction.

3. The headrest according to claim 1, characterized in that: The second silencing cavity has a second opening on the side away from the other set of second silencing cavities along the Y-axis direction.

4. The headrest according to claim 1, characterized in that: The headrest also includes a mesh structure; The mesh structure protrudes from the rear wall on the side near the front wall, and the mesh structure forms multiple sound-absorbing spaces.

5. The headrest according to claim 4, characterized in that: The first opening is opposite to the silencing space along the X-axis.

6. The headrest according to claim 1, characterized in that: The housing includes a front cover and a rear cover. The rear cover fits onto the front cover along the X-axis to form the mounting cavity. The front cover has a front wall on the side near the rear cover, and the rear cover has a rear wall on the side near the front cover. The rear cover has a cavity; The headrest also includes sound-insulating material, which fills the cavity.

7. The headrest according to claim 6, characterized in that: The rear cover includes an inner rear cover shell and a outer rear cover shell; Along the X-axis direction of the vehicle, the rear cover outer shell covers the rear cover inner shell on the side away from the front cover, thereby defining the cavity between the rear cover outer shell and the rear cover inner shell.

8. The headrest according to claim 6, characterized in that: A soundproofing element is provided at the connection between the rear cover and the front cover; And / or, The rear cover has a flange extending into the mounting cavity, and the front cover is fitted onto the side of the flange away from the mounting cavity.

9. A type of seat, characterized in that, include: Seat body; as well as, The headrest as described in any one of claims 1 to 8, wherein the headrest is mounted on the seat body.

10. A vehicle, characterized in that, Includes the seat as described in claim 9.

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