Headrest device for cabin

Abstract

The invention discloses a headrest device for a cabin, which comprises a headrest body movably arranged on a complete machine mounting bracket and arranged to provide corresponding support for the head or the neck; the noise reduction assembly is arranged in the headrest body and is arranged to perform frequency domain analysis and feature extraction by collecting background noise in the surrounding environment so as to output reverse sound waves of the background noise to perform noise reduction; the sensing assembly is arranged to sense and detect the position of the head or the neck; the transverse rotating assembly is in driving connection with the headrest body and is arranged to drive the headrest body to perform corresponding transverse rotating motion according to the position information detected by the sensing assembly; and the lifting assembly is in driving connection with the headrest body and is arranged to drive the headrest body to do corresponding lifting motion according to the position information detected by the sensing assembly. According to the technical scheme, the active noise reduction function is achieved, the position of the headrest body can follow the position and action of the head or the neck, and the noise reduction or riding experience of the cabin environment is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle cabin technology, and more particularly to a headrest device for a cabin. Background Technology

[0002] In enclosed cabin environments such as aircraft, high-speed trains, or automobiles, drivers or passengers often face background noise interference such as tire noise, wind noise, and high-frequency motor noise, which can easily cause auditory fatigue and discomfort. Therefore, how to effectively reduce noise in these cabin environments has become an urgent problem to be solved to improve the cabin riding experience.

[0003] In related technologies, traditional cockpit headrests are typically static structures with limited functionality, providing only basic head or neck support without noise reduction or position adjustment capabilities. Even when position adjustment is available, it is usually manual or simple electric, unable to automatically adapt to real-time changes in the passenger's head or neck position. This results in insufficient support accuracy, especially during long journeys where the optimal support point can be lost due to changes in the driver's or passenger's posture. Therefore, integrating active noise cancellation and intelligent posture tracking adjustment functions into headrests to provide dynamic and precise head support and improve acoustic comfort has become an important technological direction for enhancing the cockpit riding experience. Summary of the Invention

[0004] The purpose of this application is to provide a cockpit headrest device that addresses the problem that existing cockpit headrest devices have limited functionality, fail to provide dynamic and precise head support and improve acoustic comfort, thus affecting the cockpit riding experience.

[0005] To achieve this objective, embodiments of this application provide a cockpit headrest device, which includes a headrest body, a noise reduction component, a sensing component, a lateral rotation component, a lifting component, and a chassis mounting bracket. The headrest body is movably mounted on the machine mounting bracket and is configured to provide corresponding support for the head or neck; The noise reduction component is built into the headrest body and is configured to perform frequency domain analysis and feature extraction by collecting background noise in the surrounding environment, and output the anti-phase sound wave of the background noise to reduce noise. The sensing component is configured to sense and detect the position of the head or the neck; The lateral rotation component is driven to the headrest body and is configured to drive the headrest body to perform corresponding lateral rotation movements based on the position information detected by the sensing component. The lifting component is driven to the headrest body and is configured to drive the headrest body to perform corresponding lifting movements based on the position information detected by the sensing component. The mounting bracket is installed on the top of the cockpit and is used to install and fix the various components of the cockpit headrest device.

[0006] Optionally, in some embodiments of this application, one side of the headrest body is provided with a U-shaped groove adapted to the head or neck.

[0007] Optionally, in some embodiments of this application, the noise reduction component includes a first noise reduction unit and a second noise reduction unit. The first noise reduction unit includes at least one first noise reduction speaker, and the second noise reduction unit includes at least one second noise reduction speaker. The sound outlet of at least one second noise reduction speaker and the sound outlet of at least one first noise reduction speaker are disposed on opposite sides of the U-shaped groove in a one-to-one correspondence.

[0008] Optionally, in some embodiments of this application, the first noise reduction unit further includes at least one first noise reduction microphone, and the second noise reduction unit includes at least one second noise reduction microphone. The pickup holes of at least one second noise reduction microphone and at least one first noise reduction microphone are disposed on opposite sides of the U-shaped groove in a one-to-one correspondence.

[0009] Optionally, in some embodiments of this application, the sensing component includes two position sensors, which are disposed opposite to each other on opposite sides of the U-shaped groove.

[0010] Optionally, in some embodiments of this application, the sensing component includes an infrared thermal imaging sensor, which is mounted on the groove wall of the U-shaped groove.

[0011] Optionally, in some embodiments of this application, the lateral rotation assembly includes a first mounting base, a first sliding base, an arc-shaped slide rail, and a lateral movement force module. The arc-shaped slide rail and the lateral movement force module are respectively mounted on the first mounting base. The first sliding base is slidably disposed on the arc-shaped slide rail and is connected to the lateral movement force module in a transmission manner. The side of the headrest body away from the U-shaped groove is mounted on the first sliding base through a connecting bracket, so that under the transmission of the lateral movement force module, the headrest body follows the first sliding base to perform a lateral rotational movement that slides back and forth along the arc-shaped slide rail.

[0012] Optionally, in some embodiments of this application, the lateral movement module includes a telescopic connecting rod, a lead screw moving block, a first lead screw nut, a first lead screw, and a first lead screw motor. The telescopic connecting rod includes a first part and a second part that are relatively movably disposed. The first part is fastened to the first sliding seat, and the second part is fastened to the lead screw moving block. The lead screw moving block is movably disposed on the first lead screw via the first lead screw nut. The first lead screw is driven by the first lead screw motor to rotate under the drive of the first lead screw motor; and / or, The arc-shaped slide rail is provided with an arc-shaped groove, and the first sliding seat is slidably disposed on the arc-shaped slide rail through the sliding cooperation of the pulley and the arc-shaped groove.

[0013] Optionally, in some embodiments of this application, the lifting assembly includes a second mounting base, a second sliding base, a linear slide rail, and a lifting power module. The linear slide rail and the lifting power module are respectively mounted on the second mounting base. The second sliding base is slidably disposed on the linear slide rail and is connected to the lifting power module in a transmission manner. The first mounting base is mounted on the second sliding base so that, under the transmission of the lifting power module, the headrest body moves up and down along the linear slide rail together with the transverse rotation assembly and the second sliding base.

[0014] Optionally, in some embodiments of this application, the lifting power module includes a second lead screw nut, a second lead screw, and a second lead screw motor. The second sliding seat is movably mounted on the second lead screw via the second lead screw nut. The second lead screw is driven by the second lead screw motor to rotate under the drive of the second lead screw motor; and / or, The second mounting base is installed on the overall mounting bracket.

[0015] The cockpit headrest device provided in this application, through the aforementioned structural design, integrates noise reduction components, sensing components, lateral rotation components, and lifting components into a single headrest device. This achieves active noise reduction and intelligent adaptive position adjustment functions, significantly improving cabin comfort. Specifically, the integrated noise reduction components actively collect and analyze background noise from the surrounding environment and generate anti-phase sound waves, effectively suppressing background noise and providing active noise reduction to improve the acoustic comfort of the cabin environment. Furthermore, the integrated sensing components can detect the position of the driver's or passenger's head or neck in real time, and, in conjunction with the integrated lateral rotation and lifting components, drive the headrest body to adjust accordingly. This ensures the headrest body's position always precisely matches the driver's or passenger's posture changes, providing optimal noise reduction while offering continuous, stable, and personalized support. This reduces support shift caused by posture changes, providing the most comfortable seating experience. In addition, the overall mounting bracket design allows for installation at various locations on the cabin roof, not just on the car seat. It is evident that this technical solution can effectively address the problem that existing cockpit headrest devices have limited functionality, failing to provide dynamic and precise head support and improve acoustic comfort, thus affecting the cockpit riding experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0018] Figure 1 This is a schematic diagram of the structure of the cockpit headrest device according to an embodiment of this application; Figure 2 for Figure 1 The diagram shows the disassembled structure of the cockpit headrest device; Figure 3 for Figure 2 A schematic diagram showing the disassembled structure of the transverse rotation assembly of the cockpit headrest device; Figure 4 for Figure 1 The diagram shows the disassembled structure of the lifting assembly of the cockpit headrest device.

[0019] Illustrations: 1. Cockpit headrest device; 10. Headrest body; 11. U-shaped groove; 12. Connecting bracket; 20. Noise reduction component; 21. First noise reduction unit; 22. Second noise reduction unit; 30. Sensing component; 31. Position sensor; 32. Infrared thermal imaging sensor; 40. Lateral rotation component; 41. First mounting base; 42. First sliding base; 421. Limiting groove; 43. Arc-shaped slide rail; 431. Arc-shaped slide groove; 44. Lateral movement force module; 441. Telescopic connecting rod; 442. Lead screw moving block; 443. First lead screw nut; 444. First lead screw; 445. First lead screw motor; 446. First lead screw seat; 447. First bearing; 448. First coupling; 449. Second limit block; 45. Pulley; 46. First limit block; 47. Connecting piece; 50. Lifting assembly; 51. Second mounting base; 52. Second sliding seat; 53. Linear slide rail; 54. Lifting power module; 541. Second lead screw nut; 542. Second lead screw; 543. Second lead screw motor; 544. Second lead screw seat; 545. Second bearing; 546. Second coupling; 547. Third limit block; 55. Slider; 60. Overall mounting bracket. Detailed Implementation

[0020] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0022] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Please see Figures 1 to 4As shown, in one embodiment, this application provides a cockpit headrest device 1, which includes a headrest body 10, a noise reduction component 20, a sensing component 30, a lateral rotation component 40, a lifting component 50, and a mounting bracket 60. The headrest body 10 is movably mounted on the mounting bracket 60 and is configured to provide corresponding support for the head or neck. The noise reduction component 20 is built into the headrest body 10 and is configured to collect background noise from the surrounding environment, perform frequency domain analysis and feature extraction, and output the inverse phase sound wave of the background noise for noise reduction. The sensing component 30 is configured to sense and detect the position of the head or neck. The lateral rotation component 40 is driven to the headrest body 10 and is configured to drive the headrest body 10 to perform corresponding lateral rotation movements based on the position information detected by the sensing component 30. The lifting component 50 is driven to the headrest body 10 and is configured to drive the headrest body 10 to perform corresponding lifting movements based on the position information detected by the sensing component 30. The mounting bracket 60 is installed on the top of the cockpit and is used to install and fix the various components of the cockpit headrest device 1.

[0024] It should be noted that the cockpit headrest device 1 of this application embodiment is mainly used in enclosed cockpit environments such as aircraft, high-speed trains, or automobiles, to provide stable support for the head or neck of the driver or passengers, while also having an active noise reduction function. The background noise mentioned above includes, but is not limited to, tire noise, wind noise, motor noise, and other common cabin environment noises. The noise reduction component 20 of this application collects these background noises, performs frequency domain analysis and feature extraction, and outputs the inverse sound waves of these background noises. In this way, the inverse sound waves can be used to cancel out the spatial sound field interference of these background noises to achieve the corresponding noise reduction purpose. At the same time, for non-stationary, sudden, or informational sound source signals (such as human voices, traffic warning sounds, etc.) collected in the cockpit environment, this noise reduction component 20 can also retain them through feature recognition without inverting them, thereby ensuring the safety of the driving environment and the necessity of communication. Finally, this noise reduction component 20 can form a selective acoustic cancellation effect in the driver's ear area to significantly reduce target noise while maintaining the necessary auditory context perception.

[0025] Furthermore, the aforementioned mounting bracket 60, used to install and fix the various components of the cockpit headrest device 1, specifically refers to its ability to directly or indirectly install and fix components including, but not limited to, the headrest body 10, noise reduction component 20, sensing component 30, lateral rotation component 40, and lifting component 50. That is, after the headrest body 10, noise reduction component 20, sensing component 30, lateral rotation component 40, and lifting component 50 are directly or indirectly installed and fixed on the mounting bracket 60, the device is then mounted on the top of the cockpit via the mounting bracket 60. Depending on the specific installation position of the mounting bracket 60 on the top of the cockpit (including but not limited to the top of the seat), different structures and shapes can be selected. That is, the structural shape of the mounting bracket 60 includes, but is not limited to, […]. Figure 2 The L-shape shown.

[0026] In this way, the cabin headrest device 1 of this application embodiment, through the above-described structural configuration, can highly integrate the noise reduction component 20, the sensing component 30, the lateral rotation component 40, and the lifting component 50 into the headrest device, realizing the active noise reduction and intelligent adaptive position adjustment functions of the headrest, thereby significantly improving the comfort of the cabin. Specifically, on the one hand, the integrated noise reduction component 20 actively collects and analyzes the background noise of the surrounding environment and generates anti-phase sound waves, achieving effective suppression of background noise, i.e., possessing active noise reduction function to improve the acoustic comfort of the cabin environment. On the other hand, the integrated sensing component 30 can sense and detect the position of the driver's or passenger's head or neck in real time, and, in conjunction with the integrated lateral rotation component 40 and lifting component 50, drive the headrest body 10 to make corresponding adjustments, ensuring that the position of the headrest body 10 always precisely conforms to the driver's or passenger's posture changes, providing the best noise reduction experience at all times, while also providing continuous and stable personalized support to reduce support shift caused by posture changes and provide the most comfortable riding experience. In addition, the structural design of the mounting bracket 60 allows it to be installed in various locations on the top of the cockpit, rather than being limited to installation on the car seat.

[0027] In some examples, such as Figure 1 and Figure 2 As shown, a U-shaped groove 11 adapted to fit the head or neck is recessed on one side of the headrest body 10. Thus, through this structural design, the U-shaped groove 11 significantly enhances the headrest body 10's enveloping feel and lateral support stability for the head or neck. Simultaneously, the U-shaped groove 11 can more precisely conform to the physiological curve of the human head or neck, not only enhancing comfort but also improving the headrest body 10's ability to maintain head or neck posture, further optimizing its support effect.

[0028] It should be noted that, to further enhance the support comfort of the headrest body 10 for the head or neck, an elastic pad can be laid on the groove wall of its U-shaped groove 11. By providing a soft contact surface and appropriate cushioning, it effectively disperses local pressure and improves fit and comfort. Furthermore, the elastic pad can be made of flexible materials such as sponge, memory foam, or silicone, allowing for selection based on different comfort requirements and cost considerations.

[0029] In some examples, such as Figure 1 and Figure 2 As shown, the noise reduction component 20 includes a first noise reduction unit 21 and a second noise reduction unit 22. The first noise reduction unit 21 includes at least one first noise reduction speaker, and the second noise reduction unit 22 includes at least one second noise reduction speaker. The sound outlets of the at least one second noise reduction speaker and the at least one first noise reduction speaker are arranged in a one-to-one correspondence on opposite sides of the U-shaped groove 11. Thus, through the above structural arrangement, the noise reduction component 20 can specifically collect and cancel noise transmitted from the left and right sides, significantly enhancing the three-dimensional noise reduction effect. This not only optimizes the balance of the sound field near the head but also improves the interference cancellation accuracy of anti-phase sound waves in key auditory areas (especially near both ears), thereby achieving a more comprehensive and immersive active noise cancellation experience.

[0030] In some examples, such as Figure 1 and Figure 2 As shown, the first noise reduction unit 21 also includes at least one first noise reduction microphone, and the second noise reduction unit 22 includes at least one second noise reduction microphone. The pickup holes of the at least one second noise reduction microphone and the pickup holes of the at least one first noise reduction microphone are arranged in a one-to-one correspondence on opposite sides of the U-shaped groove 11. Thus, through the above structural arrangement, background noise signals from the left and right sides of the head can be accurately collected, providing the system with more three-dimensional and accurate sound field information. At the same time, this symmetrical layout significantly improves the comprehensiveness and real-time performance of noise acquisition, allowing the subsequently generated anti-phase sound waves to more accurately match the actual noise in terms of phase and amplitude, thereby greatly enhancing the targeting and overall effect of active noise reduction.

[0031] It should be noted that the noise reduction component 20 in this example should also include a DSP (Digital Signal Processor) processor. The DSP processor is electrically connected to the first noise reduction unit 21 and the second noise reduction unit 22 respectively. It is used to perform real-time frequency domain analysis and feature extraction on the stereo noise signals collected by the first noise reduction microphone and the second noise reduction microphone, and generate corresponding anti-phase control signals to drive the corresponding first noise reduction speaker and the second noise reduction speaker to output anti-phase sound waves, thereby achieving accurate and efficient adaptive active noise reduction.

[0032] In some examples, such as Figure 1 and Figure 2 As shown, the sensing component 30 includes two position sensors 31, which are positioned opposite each other on opposite sides of the U-shaped groove 11. This structural arrangement allows for accurate and reliable detection of whether the head or neck has entered and is stably positioned within the support area of ​​the headrest body 10. This layout achieves simultaneous sensing on both sides, effectively avoiding misjudgments or delays that may be caused by single-sided detection, and ensuring the accuracy and timeliness of subsequent head or neck position tracking and automatic headrest posture adjustment functions.

[0033] It should be noted that the position sensing sensor 31 in this example can be an infrared sensor, an ultrasonic sensor, or a capacitive proximity sensor, enabling it to reliably detect whether the head is approaching and entering the support area of ​​the headrest body 10 in a non-contact manner, thereby providing a precise trigger signal for subsequent automatic adjustment.

[0034] In some examples, such as Figure 1 and Figure 2 As shown, the sensing component 30 includes an infrared thermal imaging sensor 32, which is mounted on the wall of the U-shaped groove 11. Thus, by integrating the infrared thermal imaging sensor 32 into the wall of the U-shaped groove 11, temperature distribution images of the facing area can be directly acquired. This temperature distribution image can be compared with a preset head thermal feature model by the system processor of the headrest device 1, intelligently and reliably determining whether a person's head or neck has entered the support area of ​​the headrest body 10, thereby triggering subsequent position adjustment operations. This method avoids misidentifying ordinary objects as heads, significantly improving detection accuracy and ensuring that the automatic headrest adjustment function is activated only when a person is in position.

[0035] In some examples, such as Figure 1 , Figure 2 and Figure 3As shown, the lateral rotation assembly 40 includes a first mounting base 41, a first sliding base 42, an arc-shaped slide rail 43, and a lateral movement force module 44. The arc-shaped slide rail 43 and the lateral movement force module 44 are respectively mounted on the first mounting base 41. The first sliding base 42 is slidably mounted on the arc-shaped slide rail 43 and is connected to the lateral movement force module 44. The side of the headrest body 10 away from the U-shaped groove 11 is mounted on the first sliding base 42 through a connecting bracket 12, so that under the transmission of the lateral movement force module 44, the headrest body 10 follows the first sliding base 42 to perform a lateral rotational movement that slides back and forth along the arc-shaped slide rail 43. Thus, through the above structural design, the lateral rotation component, in cooperation with the arc-shaped slide rail 43 and the lateral movement force module 44, achieves smooth and stable horizontal lateral rotation of the headrest body 10. Its arc-shaped motion trajectory can accurately simulate the natural curvature of the head when turning left and right, so that the headrest body 10 can actively follow and conform to the lateral posture changes of the head and neck, so as to provide the driver or passenger with the best noise reduction experience at all times, while also providing them with continuous and ergonomic lateral support, effectively enhancing the comfort and safety of dynamic riding.

[0036] In some examples, such as Figure 1 , Figure 2 and Figure 3 As shown, an arc-shaped groove 431 is provided on the arc-shaped slide rail 43, and the first sliding seat 42 is slidably mounted on the arc-shaped slide rail 43 through the sliding engagement of the pulley 45 and the arc-shaped groove 431. Thus, by providing the arc-shaped groove 431 on the arc-shaped slide rail 43 and engaging the first sliding seat 42 with the pulley 45, frictional resistance and noise during movement can be effectively reduced. Furthermore, this pulley 45-groove structure ensures smooth and stable operation of the headrest body 10 during lateral rotation, improves adjustment accuracy and extends the service life of the mechanism, while also reducing drive energy consumption.

[0037] It should be noted that, in this example, the arc-shaped slide groove 431 can specifically be configured as two, with the two arc-shaped slide grooves 431 positioned opposite each other on opposite sides of the arc-shaped slide rail 43. Simultaneously, the pulleys 45 are preferably installed on the bottom side of the first sliding seat 42. Specifically, two sets of pulleys 45 can be provided on the bottom side of the first sliding seat 42, each set including at least two pulleys 45, which are simultaneously slidably disposed in the same arc-shaped slide groove 431. This further ensures the smooth and stable operation of the headrest body 10 during lateral rotation. Furthermore, the top surface of the arc-shaped slide rail 43 is also provided with two first limiting blocks 46, located at both ends of the arc-shaped slide rail 43, to cooperate with the corresponding limiting grooves 421 on the first sliding seat 42 for corresponding stroke limitation.

[0038] In some examples, such as Figure 1 , Figure 2 and Figure 3 As shown, the lateral movement power module 44 includes a telescopic connecting rod 441, a lead screw moving block 442, a first lead screw nut 443, a first lead screw 444, and a first lead screw motor 445. The telescopic connecting rod 441 includes a first part and a second part that are relatively movably arranged. The first part is fastened to the first sliding seat 42, and the second part is fastened to the lead screw moving block 442. The lead screw moving block 442 is movably arranged on the first lead screw 444 through the first lead screw nut 443. The first lead screw 444 is drivenly connected to the first lead screw motor 445 so as to rotate under the drive of the first lead screw motor 445. Thus, through the above structural configuration, its lateral movement module 44 can convert rotational motion into precise linear displacement via lead screw transmission, and utilize the telescopic connecting rod 441 to adapt to the geometric difference between this displacement and the arc-shaped motion path (i.e., when the first sliding seat 42 slides from both ends of the arc-shaped slide rail 43 to the middle of the arc-shaped slide rail 43, the distance between the first sliding seat 42 and the lead screw moving block 442 will gradually decrease; at this time, the telescopic connecting rod 441 can adapt by exhibiting a contraction trend through the relative movement between the first part and the second part). Similarly, when the first sliding seat 42 slides from the middle of the arc-shaped slide rail 43 to both ends of the arc-shaped slide rail 43, the distance between the first sliding seat 42 and the lead screw moving block 442 will gradually increase; at this time, the telescopic connecting rod 441 can adapt by exhibiting an extension trend through the relative movement between the first part and the second part. This not only ensures smooth and efficient power transmission, but also provides a reliable and precise linear drive basis for the lateral arc rotation of the headrest body 10, ensuring the stability and controllability of the adjustment process.

[0039] It should be noted that the first part in this example can specifically be a sleeve rod, and the second part can specifically be a sleeve. The sleeve rod passes through the sleeve along the axial direction, and under the limitation of a limiting member inside the sleeve, the sleeve rod can move axially and telescopically relative to the sleeve without falling off. In this example, the first part can also be fastened to the first sliding seat 42 through a transition connection of the connecting member 47. In addition, to better realize the rotation setting of the first lead screw 444 on the first mounting base 41, two first lead screw seats 446 can be provided at intervals on the first mounting base 41. The two ends of the first lead screw 444 are respectively rotatably connected to a first lead screw seat 446 through a first bearing 447. At the same time, one end of the first lead screw 444 is also fixedly connected to the motor shaft of the first lead screw motor 445 through a first coupling 448 to realize the transmission connection between the first lead screw 444 and the first lead screw motor 445. Furthermore, a second limit block 449 is provided at each end of the first lead screw 444 to limit the stroke accordingly.

[0040] In some examples, such as Figure 1 , Figure 2 and Figure 4 As shown, the lifting assembly 50 includes a second mounting base 51, a second sliding base 52, a linear slide rail 53, and a lifting power module 54. The linear slide rail 53 and the lifting power module 54 are respectively mounted on the second mounting base 51. The second sliding base 52 is slidably mounted on the linear slide rail 53 and is connected to the lifting power module 54. The first mounting base 41 is mounted on the second sliding base 52 so that, under the drive of the lifting power module 54, the headrest body 10 moves back and forth along the linear slide rail 53, following the transverse rotation assembly and the second sliding base 52. Thus, through the above structural arrangement, the lifting assembly 50, through the cooperation of the linear slide rail 53 and the lifting power module 54, achieves stable and smooth vertical lifting of the headrest body 10. In addition, its first mounting base 41 is mounted on the second sliding base 52, so that the lateral rotation component 40 and the lifting component 50 can work together to precisely adjust the headrest body 10 to the optimal support position that matches the head and neck height of the driver or passenger, thereby significantly improving the riding comfort of the driver or passenger.

[0041] In some examples, such as Figure 1 , Figure 2 and Figure 4 As shown, the lifting power module 54 includes a second lead screw nut 541, a second lead screw 542, and a second lead screw motor 543. The second sliding seat 52 is movably mounted on the second lead screw 542 via the second lead screw nut 541. The second lead screw 542 is driven by the second lead screw motor 543, allowing it to rotate under the transmission of the second lead screw motor 543. Thus, through this structural arrangement, the lifting power module 54 uses a lead screw and nut pair as the transmission core, accurately and stably converting the rotational motion of the second lead screw motor 543 into the linear lifting displacement of the second sliding seat 52, ensuring the stability and controllability of the headrest body 10's lifting and adjustment process. Furthermore, this transmission method also has a self-locking characteristic, enabling reliable locking at any position, thereby ensuring the accuracy of the headrest body 10's lifting and positioning, as well as its support stability in a static state.

[0042] It should be noted that, in this example, the linear slide rail 53 can specifically be configured as two, with the two linear slide rails 53 arranged relatively apart on the second mounting base 51, and both extending vertically. Furthermore, two sets of sliders 55 can be arranged on the back side of the second sliding seat 52, each set of sliders 55 including at least two sliders 55, which are simultaneously slidably connected to the same linear slide rail 53. This further ensures the smooth and stable operation of the headrest body 10 during lifting and lowering. In addition, to better realize the rotational setting of the second lead screw 542 on the second mounting base 51, two second lead screw seats 544 can be arranged at intervals on the second mounting base 51. The two ends of the second lead screw 542 are respectively rotatably connected to a second lead screw seat 544 via a second bearing 545. Simultaneously, one end of the second lead screw 542 is also fixedly connected to the motor shaft of the second lead screw motor 543 via a second coupling 546 to realize the transmission connection between the second lead screw 542 and the second lead screw motor 543. Furthermore, a third limit block 547 is provided at each end of the second lead screw 542 to limit the stroke accordingly.

[0043] In some examples, such as Figure 1 and Figure 2 As shown, the second mounting base 51 is installed on the overall mounting bracket 60. Thus, through the above structural arrangement, the foundation of the entire lifting assembly 50 can be fixed to the overall mounting bracket 60, providing a stable and reliable top load-bearing and mounting base for the headrest device. This not only ensures the overall structural rigidity during the lifting motion but also makes the cockpit headrest device 1 easy to modularly integrate and install into the top environment of various cockpits.

[0044] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A headrest device for a cockpit, characterized in that, The cockpit headrest device includes a headrest body, a noise reduction component, a sensing component, a lateral rotation component, a lifting component, and a mounting bracket for the entire machine. The headrest body is movably mounted on the machine mounting bracket and is configured to provide corresponding support for the head or neck; The noise reduction component is built into the headrest body and is configured to perform frequency domain analysis and feature extraction by collecting background noise in the surrounding environment, and output the anti-phase sound wave of the background noise to reduce noise. The sensing component is configured to sense and detect the position of the head or the neck; The lateral rotation component is driven to the headrest body and is configured to drive the headrest body to perform corresponding lateral rotation movements based on the position information detected by the sensing component. The lifting component is driven to the headrest body and is configured to drive the headrest body to perform corresponding lifting movements based on the position information detected by the sensing component. The mounting bracket is installed on the top of the cockpit and is used to install and fix the various components of the cockpit headrest device.

2. The headrest device for a cockpit according to claim 1, characterized in that, One side of the headrest body is recessed with a U-shaped groove that fits the head or neck.

3. The headrest device for a cockpit according to claim 2, characterized in that, The noise reduction component includes a first noise reduction unit and a second noise reduction unit. The first noise reduction unit includes at least one first noise reduction speaker, and the second noise reduction unit includes at least one second noise reduction speaker. The sound outlet of at least one second noise reduction speaker and the sound outlet of at least one first noise reduction speaker are arranged on opposite sides of the U-shaped groove in a one-to-one correspondence.

4. The headrest device for a cockpit according to claim 3, characterized in that, The first noise reduction unit further includes at least one first noise reduction microphone, and the second noise reduction unit includes at least one second noise reduction microphone. The pickup holes of at least one second noise reduction microphone and at least one first noise reduction microphone are arranged on opposite sides of the U-shaped groove in a one-to-one correspondence.

5. The headrest device for a cockpit according to claim 2, characterized in that, The sensing component includes two position sensors, which are arranged opposite each other on two opposite sides of the U-shaped groove.

6. The headrest device for a cockpit according to claim 2, characterized in that, The sensing component includes an infrared thermal imaging sensor, which is mounted on the wall of the U-shaped groove.

7. The cockpit headrest device according to claim 2, characterized in that, The lateral rotation assembly includes a first mounting base, a first sliding base, an arc-shaped slide rail, and a lateral movement force module. The arc-shaped slide rail and the lateral movement force module are respectively mounted on the first mounting base. The first sliding base is slidably disposed on the arc-shaped slide rail and is connected to the lateral movement force module. The side of the headrest body away from the U-shaped groove is mounted on the first sliding base through a connecting bracket, so that under the transmission of the lateral movement force module, the headrest body follows the first sliding base to perform a lateral rotational movement that slides back and forth along the arc-shaped slide rail.

8. The cockpit headrest device according to claim 7, characterized in that, The lateral movement module includes a telescopic connecting rod, a lead screw moving block, a first lead screw nut, a first lead screw, and a first lead screw motor. The telescopic connecting rod includes a first part and a second part that are relatively movably arranged. The first part is fastened to the first sliding seat, and the second part is fastened to the lead screw moving block. The lead screw moving block is movably arranged on the first lead screw through the first lead screw nut. The first lead screw is driven by the first lead screw motor to rotate under the drive of the first lead screw motor. And / or, The arc-shaped slide rail is provided with an arc-shaped groove, and the first sliding seat is slidably disposed on the arc-shaped slide rail through the sliding cooperation of the pulley and the arc-shaped groove.

9. The cockpit headrest device according to claim 7, characterized in that, The lifting assembly includes a second mounting base, a second sliding base, a linear slide rail, and a lifting power module. The linear slide rail and the lifting power module are respectively mounted on the second mounting base. The second sliding base is slidably disposed on the linear slide rail and is connected to the lifting power module in a transmission manner. The first mounting base is mounted on the second sliding base so that, under the transmission of the lifting power module, the headrest body moves up and down along the linear slide rail together with the transverse rotation assembly and the second sliding base.

10. The cockpit headrest device according to claim 9, characterized in that, The lifting power module includes a second lead screw nut, a second lead screw, and a second lead screw motor. The second sliding seat is movably mounted on the second lead screw via the second lead screw nut. The second lead screw is driven by the second lead screw motor to rotate under the drive of the second lead screw motor. And / or, The second mounting base is installed on the overall mounting bracket.

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