Self-adaptive directional sound device, headrest, sofa and control method and equipment thereof

Abstract

The invention discloses a self-adaptive directional sound device, a headrest, a sofa and a control method and equipment thereof. The device comprises a fixedly-arranged supporting assembly, a first sound assembly and a second sound assembly which are horizontally and rotatably arranged on the two sides of the supporting assembly respectively, a connecting rod assembly with the two ends connected with the first sound assembly and the second sound assembly respectively, and a driving assembly connected with the connecting rod assembly. The pressure sensing unit is used for detecting sitting posture pressure data of a user, and the control unit is electrically connected with the pressure sensing unit and the driving assembly. The driving assembly is used for driving the connecting rod assembly to move so as to synchronously drive the first sound assembly and the second sound assembly to horizontally rotate; the control unit is used for controlling the driving assembly to drive the connecting rod assembly to move according to the sitting posture pressure data so as to adjust rotation angles of the first sound assembly and the second sound assembly. The sound orientation can be adaptively adjusted, so that the sound is always aligned with the ear position of the user, accurate directional sound propagation is realized, and auditory experience is improved.

Description

Technical Field

[0001] This invention relates to the field of smart home technology, and in particular to an adaptive directional speaker device, headrest, sofa, and control method and equipment thereof. Background Technology

[0002] Currently, most headrest directional speakers on the market are designed with fixed-angle installation or manual angle adjustment, which has significant limitations. When a user sits on a sofa, their posture changes over time or due to personal habits, such as from sitting upright to leaning back or resting their head on the headrest. Because the speaker orientation of directional speakers is fixed or can only be manually adjusted, it cannot adaptively adjust the speaker orientation according to the user's posture. This causes a shift in the relative position between the speaker and the user's ears, resulting in sound propagation not always being aligned with the user's ears. This leads to sound propagation deviation, affecting the accuracy of directional sound wave transmission and resulting in a poor listening experience. Therefore, existing headrest directional speakers suffer from the technical problem of not being able to adaptively adjust the speaker orientation according to the user's posture, resulting in sound propagation deviation and a poor listening experience. Summary of the Invention

[0003] The embodiments of the present invention provide an adaptive directional speaker device, headrest, sofa and its control method and equipment, which aim to solve the problems of existing headrest directional speakers that cannot adaptively adjust the speaker orientation according to the user's sitting posture and the sound propagation is prone to deviation, resulting in a poor listening experience.

[0004] In a first aspect, the present invention provides an adaptive directional sound device, comprising: Support components are fixed in place; The first and second audio components are respectively rotatably mounted on both sides of the support component; A linkage assembly, the two ends of which are respectively connected to the first audio assembly and the second audio assembly; A drive assembly, connected to the linkage assembly, is used to drive the linkage assembly to move, so as to synchronously drive the first audio assembly and the second audio assembly to rotate horizontally; The pressure sensing unit is used to detect the user's sitting posture pressure data; The control unit is electrically connected to the pressure sensing unit and the drive assembly, respectively, and is used to control the drive assembly to drive the linkage assembly to move according to the sitting posture pressure data, so as to adjust the rotation angle of the first audio assembly and the second audio assembly.

[0005] Secondly, the present invention also provides a headrest, the headrest including the adaptive directional sound device of the first aspect described above, the adaptive directional sound device being disposed inside the headrest.

[0006] Thirdly, the present invention also provides a sofa, the sofa including the headrest described in the second aspect above.

[0007] Fourthly, the present invention also provides a method for controlling a sofa, for controlling the sofa of the third aspect, the method comprising: Real-time collection of sitting pressure data, including at least one of headrest pressure data, backrest pressure data, and seat cushion pressure data; The control drive assembly moves the linkage assembly based on the sitting pressure data to adjust the rotation angle of the first and second audio components.

[0008] Fifthly, the present invention also provides a computer device, the computer device including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method as described in the fourth aspect. This invention provides an adaptive directional sound device, headrest, sofa, and control method and equipment thereof. A fixed support assembly provides a stable mounting base for a first and second sound component. The first and second sound components are rotatably mounted on either side of the support assembly, allowing them to rotate relative to the support assembly in a horizontal plane, thereby changing the direction of sound emission. A connecting rod assembly connects to both ends of the first and second sound components, and a drive assembly connects to the connecting rod assembly. When the drive assembly moves the connecting rod assembly, the connecting rod assembly synchronously drives the first and second sound components to rotate horizontally, achieving synchronized adjustment of the sound angles on both sides. A pressure sensing unit detects the user's position. The system collects posture pressure data and sets up a control unit electrically connected to both the pressure sensing unit and the drive assembly. When a user sits on the sofa, the pressure sensing unit detects the user's posture pressure data in real time and transmits it to the control unit. The control unit determines the user's posture changes based on the posture pressure data and controls the drive assembly to move the linkage assembly. The linkage assembly synchronously drives the first and second speaker assemblies to rotate horizontally, thereby adaptively adjusting the speaker orientation according to the user's posture changes, ensuring that the speakers are always pointed at the user's ears. This solves the problem that existing headrest directional speakers cannot adaptively adjust the speaker orientation according to the user's posture changes, and the sound propagation is easily deflected, resulting in a poor listening experience. It achieves adaptive adjustment of the speaker angle, ensures accurate directional sound propagation, and effectively improves the user's listening experience. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of a sofa according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the adaptive directional sound device according to an embodiment of the present invention is shown; Figure 3 An exploded view of the adaptive directional sound device according to an embodiment of the present invention is shown; Figure 4 An exploded view of the driving component of the adaptive directional sound device according to an embodiment of the present invention is shown; Figure 5 A front view schematic diagram of the adaptive directional sound device according to an embodiment of the present invention is shown; Figure 6 This diagram illustrates the adaptive directional sound device according to an embodiment of the present invention when the angle is not adjusted. Figure 7 This diagram illustrates the adaptive directional sound device adjusting its angle according to an embodiment of the present invention. Figure 8 This diagram illustrates the adaptive directional sound device of the present invention adjusted to its maximum angle according to an embodiment of the invention. Figure 9 A schematic diagram of the linkage assembly of the adaptive directional sound device according to an embodiment of the present invention is shown; Figure 10 A schematic diagram of the rebound component of the adaptive directional sound device according to an embodiment of the present invention is shown when it is not compressed; Figure 11 A schematic diagram of the rebound component of the adaptive directional sound device according to an embodiment of the present invention during compression is shown; Figure 12 A schematic diagram of the rebound component of the adaptive directional sound device according to an embodiment of the present invention when compressed to its maximum stroke is shown; Figure 13 A top view of another embodiment of the headrest of the present invention is shown; Figure 14 An exploded view of another embodiment of the adaptive directional sound device of the present invention is shown; Figure 15 A schematic diagram of another embodiment of the adaptive directional sound device of the present invention is shown; Figure 16 This diagram illustrates another embodiment of the invention with the headrest folded. Figure 17This diagram illustrates another embodiment of the invention with the headrest folded. Figure 18 This diagram illustrates another embodiment of the invention with the headrest fully folded. Figure 19 A schematic block diagram of an adaptive directional sound device according to an embodiment of the present invention is shown; Figure 20 A schematic block diagram of a computer device provided by an embodiment of the present invention is shown; Figure label: 100. Headrest; 101. Left side area; 102. Middle area; 103. Right side area; 1. First speaker assembly; 11. First speaker body; 12. First speaker mounting component; 121. First upper connecting part; 122. First lower connecting part; 123. First middle connecting part; 124. First deflection shaft; 125. First rotating connecting part; 126. First connector support arm; 127. First oblique support arm; 2. Second speaker assembly; 21. Second speaker... 22. Second speaker mounting component; 221. Second upper connecting part; 222. Second lower connecting part; 223. Second intermediate connecting part; 224. Second deflection shaft; 225. Second rotating connecting part; 226. Second connector support arm; 227. Second oblique support arm; 3. Linkage assembly; 31. First link; 32. Second link; 33. Rotating component; 331. Center rod; 3311. Upper rod; 3312. Lower rod; 332. Swing rod 3321, Rotary drive slide rail; 333, Rotary shaft; 34, Universal joint; 4, Drive assembly; 41, Motor; 42, Lead screw; 43, Sliding component; 431, Slide block; 432, Rotary drive slider; 433, Nut; 434, Transverse slider; 44, Bracket; 441, Drive mounting part; 442, Transverse slide rail; 5, Support assembly; 51, Base; 52, First positioning component; 53, Second positioning component; 54, First forward extension component; 541, The... 55. Rotary connecting part; 55. Second forward extension; 551. Second rotary connecting part; 6. Rebound assembly; 61. First limiting member; 611. First guide groove; 612. First positioning post; 62. Second limiting member; 621. Second guide groove; 622. Second positioning post; 63. First elastic member; 64. Second elastic member; 200. Backrest; 300. Seat cushion; 400. Pressure sensor; 500. Control unit; 600. Pressure sensing unit. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrating and understanding this invention, and not for limiting it. Furthermore, in the drawings, structures that are similar or identical are indicated by the same reference numerals.

[0013] First embodiment: Reference Figures 1-12 This application embodiment illustrates a sofa, which includes a headrest 100, a backrest 200, a seat cushion 300, a pressure sensor 400, and a sound system. Figure 1 As shown, for ease of description, the length direction of the headrest 100 is defined as the left-right direction, the height direction as the up-down direction (also called the vertical direction), and the width direction as the front-back direction. The headrest 100 is located at the top of the backrest 200, which is located behind the seat cushion 300. The headrest 100, backrest 200, and seat cushion 300 together constitute the main support structure of the sofa, providing support for the user's sitting and reclining posture. The speaker is integrated into the headrest 100, forming a unified structure that does not occupy external space and maintains a clean appearance. The pressure sensor 400 is fixedly installed on the surface of the seat cushion 300 and / or backrest 200 to collect the user's sitting posture and leaning pressure signals in real time. The speaker is electrically connected to the pressure sensor 400. The speaker can automatically adjust its orientation angle based on the signal fed back from the pressure sensor 400, ensuring the speaker is always pointed at the user's ears, thereby achieving precise directional sound wave transmission and guaranteeing the user's auditory experience.

[0014] Reference Figure 2 The audio device is the core functional component of the sofa, installed within the headrest 100. The audio device includes a first audio component 1, a second audio component 2, a connecting rod assembly 3, a drive assembly 4, a support assembly 5, and a rebound assembly 6. The support assembly 5 serves as the fixed mounting reference for the entire audio device, rigidly connected to the headrest 100. The drive assembly 4, connecting rod assembly 3, first audio component 1, second audio component 2, and rebound assembly 6 are all directly or indirectly assembled onto the support assembly 5. The drive assembly 4 is drively connected to the connecting rod assembly 3, driving its movement. Both ends of the connecting rod assembly 3 are connected to the first audio component 1 and the second audio component 2 respectively. Driven by the drive assembly 4, the connecting rod assembly 3 moves, causing the first audio component 1 and the second audio component 2 to rotate synchronously, thereby adjusting the audio angle. The rebound assembly 6 is located between the first audio component 1 and the support assembly 5, and between the second audio component 2 and the support assembly 5, providing flexible cushioning and automatic reset when the head is leaning against the support, eliminating the feeling of foreign objects and improving comfort.

[0015] Reference Figure 3 The support assembly 5 serves as the basic support and positioning carrier for the audio device, providing a stable mounting base for all components. The support assembly 5 includes a base 51, a first positioning element 52, and a second positioning element 53. The base 51 is fixedly connected to the middle section 102 of the headrest 100, serving as the core mounting base for the audio device. The first positioning element 52 and the second positioning element 53 are respectively fixedly connected to the left and right sides of the base 51. The first positioning element 52 is fixedly connected to the left side section 101 of the headrest 100, and the second positioning element 53 is fixedly connected to the right side section 103 of the headrest 100. Through the cooperation of the base 51, the first positioning element 52, and the second positioning element 53, the support assembly 5 is securely installed inside the headrest 100, providing mounting support for the drive assembly 4, the connecting rod assembly 3, the first audio assembly 1, and the second audio assembly 2.

[0016] Reference Figure 4 The drive assembly 4 is the power core for adjusting the audio angle, converting the rotational motion of the motor 41 into linear reciprocating motion to provide power input to the linkage assembly 3. The drive assembly 4 includes a motor 41, a lead screw 42, a slider 43, and a bracket 44. The bracket 44 includes a drive mounting part 441 and a transverse sliding groove 442. The drive mounting part 441 is bent forward from one side of the bracket 44 to fix the motor 41. The transverse sliding groove 442 is opened along the length of the bracket 44 to provide linear guidance for the slider 43. The motor 41 is fixedly mounted on the drive mounting part 441, and the output shaft of the motor 41 is coaxially connected to the lead screw 42. The operation of the motor 41 can drive the lead screw 42 to rotate synchronously. The sliding component 43 includes a slide block 431, a rotary drive slider 432, a nut 433, and a transverse slider 434. The nut 433 is fixed to the front of the slide block 431 and is threadedly engaged with the lead screw 42, converting the rotational motion of the lead screw 42 into the linear motion of the slide block 431. There are two transverse sliders 434, which are fixed at intervals to the back of the slide block 431 and slide to fit the transverse sliding groove 442 of the bracket 44, restricting the slide block 431 to move only in a transverse linear motion along the transverse sliding groove 442, ensuring smooth and uninterrupted movement. The rotary drive slider 432 is fixed to the front of the slide block 431 and is used to form a sliding transmission engagement with the connecting rod assembly 3 to transmit power to drive the movement of the connecting rod assembly 3. When the motor 41 rotates forward, the lead screw 42 drives the nut 433 to move the slide 431 laterally away from the motor 41; when the motor 41 rotates in reverse, the lead screw 42 drives the nut 433 to move the slide 431 laterally towards the motor 41 to reset. Through the reciprocating lateral movement of the slide 431, a continuous and stable power is provided to the connecting rod assembly 3 to drive the connecting rod assembly 3 to move, and finally realize the adjustment of the sound angle.

[0017] Reference Figures 5-9The linkage assembly 3 is the core of the power transmission, converting the linear motion of the drive assembly 4 into rotational motion, thereby driving the audio assemblies on both sides to adjust their angles synchronously. The linkage assembly 3 includes a first link 31, a second link 32, a rotating component 33, and a universal joint 34. The rotating component 33 is T-shaped and includes a central rod 331, a swing rod 332, and a rotating shaft 333. The central rod 331 includes an upper rod 3311 and a lower rod 3312, which are connected as one unit. A central hole is opened at the connection between the upper rod 3311 and the lower rod 3312 (i.e., the middle position of the central rod 331). The rotating shaft 333 passes through the central hole, allowing the rotating component 33 to rotate freely around the rotating shaft 333. The swing arm 332 is fixed or integrally connected to the side of the center rod 331. A rotary drive groove 3321 is provided on the swing arm 332. The rotary drive groove 3321 extends along the length of the swing arm 332 and is inclined relative to the center rod 331, that is, the rotary drive groove 3321 and the center rod 331 form an angle. The rotary drive groove 3321 is slidably adapted to the rotary drive slider 432 of the drive assembly 4. One end of the first connecting rod 31 is connected to the top of the upper rod 3311 of the center rod 331 through a universal joint 34, and the other end is connected to the first audio assembly 1 through a universal joint 34. One end of the second connecting rod 32 is connected to the bottom of the lower rod 3312 of the center rod 331 through a universal joint 34, and the other end is connected to the second audio assembly 2 through a universal joint 34. The upper rod 3311 and the lower rod 3312 have different lengths, as do the first connecting rod 31 and the second connecting rod 32. To reduce space occupation, the rotating component 33 is not centered relative to the first speaker assembly 1 and the second speaker assembly 2 during actual installation. The distance from the rotating component 33 to the first speaker assembly 1 is not equal to the distance from the rotating component 33 to the second speaker assembly 2. By setting the upper rod 3311 and the lower rod 3312 to different lengths, and the first connecting rod 31 and the second connecting rod 32 to different lengths, and by precisely configuring the length ratio of the upper rod 3311 to the lower rod 3312 and the length ratio of the first connecting rod 31 to the second connecting rod 32 according to the non-centered position of the rotating component 33, the displacement transmitted by the first connecting rod 31 and the second connecting rod 32 when the rotating component 33 rotates can compensate for the distance difference caused by the non-centered arrangement of the rotating component 33, thereby ensuring that the deflection angle of the first speaker assembly 1 and the second speaker assembly 2 is consistent. The universal joint 34 can accommodate multi-directional deflection, adapt to non-linear displacement during the linkage movement, save space, improve the flexibility and stability of motion transmission, eliminate motion interference during transmission, and ensure smooth and lossless power transmission. When the rotary drive slider 432 of the drive assembly 4 slides along the rotary drive groove 3321, it pushes the rotating part 33 to rotate around the rotating shaft 333, thereby driving the first connecting rod 31 and the second connecting rod 32 to perform synchronous pushing or pulling movements, ultimately driving the first audio assembly 1 and the second audio assembly 2 to deflect synchronously to retract inward or expand outward, thereby achieving synchronous adjustment of the angle of the audio components on both sides.

[0018] Reference Figure 5 The first speaker assembly 1 is a directional sound-emitting unit located on the left side of the sofa headrest 100. The first speaker assembly 1 includes a first speaker body 11 and a first speaker mounting component 12. The first speaker body 11 is the core sound-emitting component and is fixedly installed on the first speaker mounting component 12, which provides stable support. The first speaker mounting component 12 is vertically arranged, and the speaker of the first speaker body 11 is horizontally oriented. The first speaker mounting component 12 is an integrated molded structure and includes a first upper connecting part 121, a first lower connecting part 122, a first intermediate connecting part 123, and a first deflection shaft 124. The first upper connecting part 121 and the first lower connecting part 122 are respectively fixed to the upper and lower sides of the first intermediate connecting part 123, forming a C-shaped load-bearing frame. The first intermediate connecting part 123 provides a flat mounting surface for the first speaker body 11, ensuring a firm installation and stable sound output. Both the upper connecting part 121 and the lower connecting part 122 have a first deflection shaft 124 on their end faces. The first deflection shaft 124 is cylindrical, with its axis positioned along the headrest height direction. The first deflection shaft 124 is used for sliding and rotating engagement with the rebound assembly 6, and also serves as the rotation axis of the first speaker mounting part 12. The upper connecting part 121 is rotatably connected to the end of the first connecting rod 31 of the connecting rod assembly 3 via a universal joint 34. Driven by the connecting rod assembly 3, the first deflection shaft 124 rotates horizontally around its own axis, causing the first speaker mounting part 12 to deflect horizontally, thereby adjusting the horizontal angle of the speaker and ensuring that the speaker is precisely aimed at the user's ears.

[0019] Continue to refer to Figure 5The second speaker assembly 2 is a directional sound unit located on the right side of the sofa headrest 100, symmetrically arranged with the first speaker assembly 1. The second speaker body 21 is the core sound-emitting component, fixedly installed on the second speaker mounting component 22, which provides stable support. The second speaker mounting component 22 is vertically arranged, and the speaker of the second speaker body 21 is horizontally oriented. The second speaker mounting component 22 is an integrated molded structure, including a second upper connecting part 221, a second lower connecting part 222, a second intermediate connecting part 223, and a second deflection shaft 224. The second upper connecting part 221 and the second lower connecting part 222 are respectively fixed to the upper and lower sides of the second intermediate connecting part 223, forming a C-shaped load-bearing frame. The second intermediate connecting part 223 provides a flat mounting surface for the second speaker body 21, ensuring a firm installation and stable sound output. A second deflection shaft 224 is provided on the end face of both the second upper connecting part 221 and the second lower connecting part 222. The second deflection shaft 224 is cylindrical in shape, with its axis set along the headrest height direction. The second deflection shaft 224 is used for sliding and rotating cooperation with the rebound assembly 6, and also serves as the rotation axis of the second speaker mounting part 22. The second lower connecting part 222 is rotatably connected to the end of the second connecting rod 32 of the connecting rod assembly 3 via a universal joint 34. Driven by the connecting rod assembly 3, the second deflection shaft 224 rotates horizontally around its own axis, causing the second speaker mounting part 22 to deflect horizontally, thereby realizing the adjustment of the speaker's horizontal angle.

[0020] Reference Figures 10-12The rebound assembly 6 is a buffer and reset component, symmetrically arranged on the left and right sides, used for flexible buffering when the head is leaning against it and automatic reset after the head leaves. The rebound assembly 6 includes a first limiting member 61, a second limiting member 62, a first elastic member 63, and a second elastic member 64. The first limiting member 61 is fixed to the right side of the base 51. The first limiting member 61 has a C-shaped structure and includes a first guide groove 611 and a first positioning post 612. There are two first guide grooves 611, respectively arranged on the upper and lower sides of the first limiting member 61, and both first guide grooves 611 extend along the front-back direction of the headrest 100. The first positioning post 612 is arranged on the top surface of the first limiting member 61. The first elastic member 63 is a torsion spring, which is sleeved on the first positioning post 612, and one end of the torsion spring abuts against the rear side of the first deflection shaft 124. In the initial state, the first deflection shaft 124 is located at the foremost position of the first guide groove 611. Similarly, the second limiting member 62 is fixed to the right side of the base 51. The second limiting member 62 has a C-shaped structure and includes a second guide groove 621 and a second positioning post 622. Two second guide grooves 621 are provided, respectively located on the upper and lower sides of the second limiting member 62, and both second guide grooves 621 extend along the front-rear direction of the headrest 100. The second positioning post 622 is located on the top surface of the second limiting member 62. The second elastic member 64 is a torsion spring, which is sleeved on the second positioning post 622, with one end of the torsion spring abutting against the rear side of the second deflection shaft 224. In the initial state, the second deflection shaft 224 is located at the foremost position of the second guide groove 621. When the user's head rests against the headrest 100, the first speaker assembly 1 is subjected to pressure. The first deflection shaft 124 moves backward along the first guide groove 611 and compresses the torsion spring, achieving a backward cushioning effect for the speaker. When the user's head leaves the headrest 100, the first speaker assembly 1 is no longer subjected to pressure. Under the elastic force of the torsion spring, the torsion spring pushes the first deflection shaft 124 forward along the first guide groove 611 to reset, returning to the foremost position of the first guide groove 611. Furthermore, since the first deflection shaft 124 is cylindrical and its axis is set along the height direction of the headrest 100, when the first speaker assembly 1 rotates, the first deflection shaft 124 can rotate around its axis within the first guide groove 611, causing the first speaker mounting part 12 to deflect horizontally, thereby achieving the speaker angle adjustment function. At the same time, the first deflection shaft 124 can also slide back and forth within the first guide groove 611, achieving the speaker rebound cushioning function, combining rotation and sliding functions. The rebound principle of the second speaker assembly 2 is the same as that of the first speaker assembly 1, and will not be described again here.

[0021] It should be noted that both the first speaker body 11 and the second speaker body 21 in this embodiment adopt a directional acoustic sound generation structure, which integrates a dual-source and a single-source collaborative sound generation unit. The dual-source outputs two sound waves with a phase difference under the drive of an electrical signal, and the single-source outputs a third sound wave under the drive of an electrical signal. The three sound waves superimpose each other during spatial propagation. When the sound waves are out of phase, the peaks and troughs correspond to each other and superimpose to cancel each other out, and the sound pressure decreases to near zero. When the phases are the same, the peaks correspond to each other and superimpose to enhance each other, and the sound pressure increases. This solution precisely designs the phase and amplitude of the three sound waves, causing them to superimpose and cancel each other out in a specific direction away from the user's ear, where the sound pressure is close to zero and the sound is weak. Conversely, in the opposite direction towards the user's ear, they superimpose and enhance each other, resulting in significantly higher sound pressure. This allows the far-field sound radiation from the first speaker 11 and the second speaker 21 to form a stable directional sound field, concentrating sound energy towards the designated direction of the user's ear. The sound pressure level is significantly reduced in non-directional directions, achieving stable directional sound wave propagation. This effectively prevents sound amplification, improves sound leakage, and ensures that the sound waves are always precisely aligned with the user's ear. In other words, the sound is louder and clearer near the user's ear, while the sound is very soft and inaudible further away. This achieves a highly efficient and precise directional sound effect, significantly enhancing the user's auditory experience.

[0022] The working process of the audio device in this embodiment is as follows: Reference Figures 6-8 When a user sits on the sofa, the pressure sensor 400 on the seat cushion 300 and / or backrest 200 detects the user's posture and generates a pressure feedback signal. After the signal is transmitted to the control unit, the control unit drives the motor 41 to perform an angle adjustment action. When the speaker angle needs to be adjusted, the motor 41 rotates forward, and the output shaft of the motor 41 drives the lead screw 42 to rotate. The rotation of the lead screw 42 drives the nut 433 to move away from the motor 41 along the length of the lead screw 42. The slide block 431 moves laterally along the transverse sliding groove 442, and the rotary drive slider 432 on the slide block 431 slides along the rotary drive sliding groove 3321 of the rotating component 33. Because there is an angle between the rotary drive slide 3321 and the center rod 331, the sliding drive rotating component 33 of the rotary drive slider 432 rotates around the rotating shaft 333. The rotation of the rotating component 33 drives the first connecting rod 31 and the second connecting rod 32 to push outwards from the headrest 100 in a synchronized manner, moving away from each other. That is, the first connecting rod 31 moves to the left and the second connecting rod 32 moves to the right. This causes the first connecting rod 31 and the second connecting rod 32 to push the first speaker assembly 1 and the second speaker assembly 2 to deflect horizontally towards the inside of the headrest 100 in a synchronized manner around the first deflection shaft 124 and the second deflection shaft 224, so that the speakers of the first speaker body 11 and the second speaker body 21 are set to face each other from left to right, thereby aligning with the ear positions on both sides of the user's head, completing the synchronous adjustment of the sound angle, and realizing precise directional sound wave transmission.

[0023] Reference Figures 10-12 When the user's head rests against the headrest 100, the first speaker assembly 1 and the second speaker assembly 2 are subjected to pressure. The first deflection shaft 124 and the second deflection shaft 224 move backward along the first guide groove 611 and the second guide groove 621, respectively, compressing the corresponding torsion springs. The elastic deformation of the torsion springs achieves a smooth backward cushioning of the speakers, preventing the user from experiencing a foreign object sensation. When the user's head leaves the headrest 100, under the elastic force of the torsion springs, the spring force pushes the first deflection shaft 124 and the second deflection shaft 224 forward along the first guide groove 611 and the second guide groove 621, respectively, to reset the speakers to their initial positions.

[0024] When the user leaves the sofa and needs to reset, the control unit drives the motor 41 to reverse. The output shaft of the motor 41 drives the lead screw 42 to rotate in the opposite direction. The rotation of the lead screw 42 drives the nut 433 to move along the length of the lead screw 42 towards the motor 41. The slide block 431 moves laterally along the transverse sliding groove 442 to reset. The rotary drive slider 432 on the slide block 431 slides in the opposite direction along the rotary drive groove 3321 of the rotating component 33. The rotating component 33 rotates in the opposite direction, driving the first connecting rod 31 and the second connecting rod 32 to move inward towards the headrest 100 in a synchronized manner, bringing them closer to each other. That is, the first connecting rod 31 moves to the right and the second connecting rod 32 moves to the left. The first connecting rod 31 and the second connecting rod 32 pull the first speaker assembly 1 and the second speaker assembly 2 to rotate horizontally outward towards the headrest 100 around the first deflection axis 124 and the second deflection axis 224 in a synchronized manner, so that the speakers of the first speaker body 11 and the second speaker body 21 are both facing the sofa, restoring the initial state.

[0025] Second embodiment: Reference Figure 1 , Figures 13-18 Another embodiment of this application provides a sofa, which includes a headrest 100, a backrest 200, a seat cushion 300, a pressure sensor 400, and a sound device. The structure of the sofa in this embodiment is basically the same as that in the previous embodiment. The structures of the backrest 200, seat cushion 300, and pressure sensor 400 are completely identical to those in the previous embodiment. The main difference lies in the folding structure of the headrest 100 and the partial adaptation structure of the sound device. The headrest 100 also includes a left side area 101, a middle area 102, and a right side area 103. The difference is that the left side area 101 and the right side area 103 can be folded inward relative to the middle area 102. The overall structure of the sound device is similar to that in the previous embodiment, wherein the structures of the connecting rod assembly 3 and the drive assembly 4 are the same as in the previous embodiment, and the spring-loaded assembly 6 is omitted. The difference lies in the first sound assembly 1, the second sound assembly 2, and the support assembly 5, which are adapted for the folding function. The specific structures are as follows: Reference Figure 14The support component 5 includes a base 51, a first forward extension 54, and a second forward extension 55. The base 51 is a plate-like structure and is fixedly installed, serving as the fixed mounting base for the entire foldable speaker mechanism. Both the first forward extension 54 and the second forward extension 55 are triangular frame structures. The first forward extension 54 and the second forward extension 55 are fixedly fixed to the left and right sides of the base 51 at intervals along the left and right directions. The first forward extension 54 and the second forward extension 55 can be integrally formed with the base 51 or fixedly connected by screws, rivets, or other means. The first forward extension 54 and the second forward extension 55 extend forward from the base 51 in the front-rear direction, respectively. The extended ends of the first forward extension 54 and the second forward extension 55 form a first rotating connecting portion 541 and a second rotating connecting portion 551. The rotation axes of the first rotating connecting portion 541 and the second rotating connecting portion 551 are arranged vertically. The first rotating connecting portion 541 and the second rotating connecting portion 551 are used for rotatable connection with the audio assembly. Since the first forward extension 54 and the second forward extension 55 extend forward from the base 51, and the first rotating connecting portion 541 and the second rotating connecting portion 551 are located at the extended ends of the first forward extension 54 and the second forward extension 55, the rotating connecting portion is displaced forward relative to the base 51, achieving a forward-shifted rotation point. When the audio assembly rotates horizontally around the rotating connecting portion, the trajectory of the audio assembly is a rotation around the forward-shifted rotation point. During rotation, the audio assembly can move from the sides of the base 51 to the front of the base 51, achieving a folding function.

[0026] Refer to 14 and Figure 15The first speaker assembly 1 includes a first speaker body 11 and a first speaker mounting component 12. The first speaker body 11 is the core sound-generating component and is mounted on the first speaker mounting component 12. The first speaker mounting component 12 is a frame-like structure used to fix and support the first speaker body 11. The first speaker mounting component 12 includes a first mounting part and a first inclined support arm 127. The first mounting part includes a first upper connecting part 121, a first lower connecting part 122, and a first intermediate connecting part 123, which together form a C-shaped load-bearing frame. The first intermediate connecting part 123 provides a flat mounting surface for the first speaker body 11. Two first inclined support arms 127 are provided, which are respectively connected to the first upper connecting part 121 and the first lower connecting part 122. The first inclined support arms 127 extend forward from the side of the first mounting part near the first extension member 54, creating a reasonable distance between the first mounting part and the first rotary connecting part 541. The extended end of the first inclined support arm 127 is provided with a first rotary connecting part 125, which is horizontally rotatably connected to the first rotary connecting part 541. The first inclined support arms 127 adopt a double support arm structure with symmetrical upper and lower arrangement. Two first rotary connecting parts 541 are provided accordingly, located on the upper and lower sides of the extended end of the first extension member 54, respectively. The upper and lower first inclined support arms 127 are rotatably connected to the upper and lower first rotary connecting parts 541, forming a two-point rotary support structure. The first audio component 1 is also equipped with a first hinge (not shown in the figure). The first hinge is made of rivets. Both the first rotating connection part 125 and the first rotating connection part 541 are machined into through-hole structures. The first hinge passes through the two through holes and hinges the first rotating connection part 125 and the first rotating connection part 541 together to form a horizontally rotatable connection. The first audio mounting component 12 is also provided with a first connector arm 126. The first connector arm 126 extends from the first intermediate connection part 123 toward the connecting rod assembly 3. The first connector arm 126 is used to connect with the connecting rod assembly 3. The first connector arm 126 is rotatably connected to the connecting rod of the connecting rod assembly 3, or the first connector arm 126 is connected to the connecting rod of the connecting rod assembly 3 through a universal joint 34.

[0027] Continue to refer to 14 and Figure 15The second speaker assembly 2 includes a second speaker body 21 and a second speaker mounting component 22. The second speaker body 21 is the core sound-generating component and is mounted on the second speaker mounting component 22. The second speaker mounting component 22 is a frame-like structure used to fix and support the second speaker body 21. The second speaker mounting component 22 includes a second mounting part and a second inclined support arm 227. The second mounting part includes a second upper connecting part 221, a second lower connecting part 222, and a second intermediate connecting part 223, which together form a C-shaped load-bearing frame. The second intermediate connecting part 223 provides a flat mounting surface for the second speaker body 21. Two second inclined support arms 227 are provided, which are respectively connected to the second upper connecting part 221 and the second lower connecting part 222. The second inclined support arms 227 extend forward from the side of the second mounting part near the second forward extension 55, creating a reasonable distance between the second mounting part and the second rotary connecting part 551. The extended end of the second inclined support arm 227 is provided with a second rotary connecting part 225, which is horizontally rotatably connected to the second rotary connecting part 551. The second inclined support arms 227 adopt a double support arm structure with symmetrical upper and lower arrangement. Two second rotary connecting parts 551 are provided accordingly, located on the upper and lower sides of the extended end of the second forward extension 55, respectively. The upper and lower second inclined support arms 227 are rotatably connected to the upper and lower second rotary connecting parts 551, forming a two-point rotary support structure. The second audio component 2 is also equipped with a second hinge (not shown in the figure). The second hinge is made of rivets. Both the second rotating connection part 225 and the second rotating connection part 551 are machined into through-hole structures. The second hinge passes through the two through holes and hinges the second rotating connection part 225 and the second rotating connection part 551 together to form a horizontally rotatable connection. The second audio mounting component 22 is also provided with a second connector arm 226. The second connector arm 226 extends from the second intermediate connection part 223 toward the connecting rod assembly 3. The second connector arm 226 is used to connect with the connecting rod assembly 3. The second connector arm 226 is rotatably connected to the connecting rod of the connecting rod assembly 3, or the second connector arm 226 is connected to the connecting rod of the connecting rod assembly 3 through a universal joint 34.

[0028] The working process of the audio device in this embodiment is as follows: Reference Figures 16-18When the headrest 100 needs to be folded, the drive assembly 4 drives the linkage assembly 3 to move. The linkage assembly 3 synchronously drives the first speaker mounting part 12 and the second speaker mounting part 22 to rotate horizontally around the first rotating connection part 541 and the second rotating connection part 551 respectively. The first speaker assembly 1 rotates inward from the left side of the base 51, and the second speaker assembly 2 rotates inward from the right side of the base 51. The two speaker assemblies rotate towards each other and retract in front of the base 51. Since the first speaker assembly 1 is connected to the left side area 101 of the headrest 100 and the second speaker assembly 2 is connected to the right side area 103 of the headrest 100, the rotation of the speaker assemblies drives the two sides of the headrest 100 to rotate synchronously, and synchronously pulls the soft foam of the left side area 101 and the right side area 103 of the headrest 100 inward. The left side area 101 and the right side area 103 retract inward relative to the middle area 102, realizing the folding function of the headrest 100.

[0029] In the unfolded position, the first and second mounting parts are located on the left and right sides of the base 51, respectively. The first inclined support arm 127 and the second inclined support arm 227 extend forward from the mounting parts, with the mounting parts positioned precisely on the left and right sides of the base 51, flush with the base 51 in the left-right direction. The structure is compact and does not occupy additional front and rear space. In the folded position, both the first inclined support arm 127 and the second inclined support arm 227 rotate to be parallel to the base 51. The inclined support arms are located in front of the base 51. Since the mounting parts are inclined relative to the inclined support arms, the mounting parts are further forward relative to the inclined support arms, facilitating the inward folding of the areas on both sides of the headrest 100.

[0030] When the headrest 100 needs to be unfolded, the drive assembly 4 drives the linkage assembly 3 to move in the opposite direction. The linkage assembly 3 drives the first audio assembly 1 and the second audio assembly 2 to rotate in the opposite direction. The audio assemblies rotate from the front of the base 51 to the left and right sides of the base 51 respectively, and the areas on both sides of the headrest 100 unfold outward to return to the unfolded state.

[0031] As mentioned above, with the rapid development of smart home technology and people's increasing demands for quality of life, furniture products such as sofas and chairs with built-in speakers are increasingly favored by consumers. These products typically feature directional speakers on both sides of the headrest to provide users with an immersive auditory experience. Directional speakers, through specific acoustic design, can concentrate sound energy and propagate it in a designated direction, effectively preventing sound amplification and interference with others while ensuring the user's auditory experience. However, in actual use, users' sitting postures are not static but change depending on the usage scenario and personal habits, such as sitting upright to watch, leaning back to rest, or resting their heads. This dynamic change in posture causes the position of the user's ears relative to the headrest, and existing headrest directional speakers often struggle to adapt to these changes, thus affecting the accuracy of directional sound wave transmission and the user's auditory experience.

[0032] To address this, this invention provides an adaptive directional speaker device. The control unit 500 controls the drive assembly 4 to drive the linkage assembly 3 to move based on the user's sitting posture pressure data. This simultaneously drives the two speaker assemblies to rotate horizontally and adjusts the rotation angle. The device can adaptively adjust the speaker orientation according to the user's sitting posture changes, ensuring that the speaker is always aimed at the user's ears, achieving precise directional sound propagation and effectively improving the user's auditory experience.

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] Please refer to the above embodiments. Figures 1-19 This invention provides an adaptive directional speaker device, comprising: a support assembly 5, a first speaker assembly 1, a second speaker assembly 2, a linkage assembly 3, a drive assembly 4, a pressure sensing unit 600, and a control unit 500. The support assembly 5 is fixedly disposed; the first speaker assembly 1 and the second speaker assembly 2 are respectively rotatably disposed on both sides of the support assembly 5; the linkage assembly 3 has its two ends connected to the first speaker assembly 1 and the second speaker assembly 2 respectively; the drive assembly 4 is connected to the linkage assembly 3 and is used to drive the linkage assembly 3 to move, thereby synchronously driving the first speaker assembly 1 and the second speaker assembly 2 to rotate horizontally; the pressure sensing unit 600 is used to detect the user's sitting posture pressure data; the control unit 500 is electrically connected to the pressure sensing unit 600 and the drive assembly 4 respectively, and is used to control the drive assembly 4 to drive the linkage assembly 3 to move according to the sitting posture pressure data, thereby adjusting the rotation angle of the first speaker assembly 1 and the second speaker assembly 2.

[0035] Reference Figure 19Specifically, the support component 5 is a rigid load-bearing structure that is fixed as a whole. It can be an integrated base plate combined frame or a multi-segment spliced ​​rigid component, used to provide a stable installation foundation for the entire audio device. The first audio component 1 and the second audio component 2 are symmetrically distributed sound-generating units, both of which use directional speakers. They are respectively movably set on the left and right sides of the support component 5, and both can be rotated and adjusted around the vertical axis in the horizontal plane. The connecting rod assembly 3 is a transmission connection component, with its left and right ends connected to the inner parts of the first audio component 1 and the second audio component 2, respectively, to realize the synchronous transmission of power. The drive component 4 is a power output component, which can adopt an electric drive, pneumatic drive or hydraulic drive structure, and forms a transmission cooperation with the connecting rod assembly 3 to drive the connecting rod assembly 3 to perform reciprocating motion. The pressure sensing unit 600 can be arranged on the headrest 100, backrest 200 and seat cushion 300 of the sofa. The pressure sensing unit 600 is a pressure detection element, which can be a thin-film pressure sensor, a contact sensor, an array sensor, a strain gauge sensor, or a piezoelectric sensor, used to collect real-time sitting pressure data when the user sits down or leans back. The control unit 500 is an electronic control module for signal processing and command output, which can be a microcontroller embedded chip or a programmable logic controller, and is electrically connected to the pressure sensing unit 600 and the drive component 4 through circuits, used to receive sitting pressure data and output corresponding control commands.

[0036] Specifically, the pressure sensing unit 600 detects the user's sitting posture in real time and transmits the pressure data to the control unit 500. The control unit 500 determines the changes in the user's posture based on the data and then controls the drive component 4 to start operating. The drive component 4 drives the linkage component 3 to move, and the linkage component 3 synchronously drives the first speaker component 1 and the second speaker component 2 to rotate horizontally, precisely adjusting the rotation angle of both. The fixed support component 5 ensures the stability of the overall structure. Together with the horizontally rotatable speaker component linkage component 3, drive component 4, pressure sensing unit 600, and control unit 500, the speaker's sound direction can be adaptively adjusted according to the user's sitting posture, effectively solving the problem of sound propagation deviation and improving the user's listening experience.

[0037] Reference Figure 5In one embodiment, the first speaker assembly 1 includes a first speaker body 11 and a first speaker mounting member 12. The first speaker body 11 is mounted on the first speaker mounting member 12. The first speaker mounting member 12 is provided with a first deflection shaft 124. The axis of the first deflection shaft 124 is oriented vertically, and the first speaker mounting member 12 can rotate horizontally around the first deflection shaft 124. The second speaker assembly 2 includes a second speaker body 21 and a second speaker mounting member 22. The second speaker body 21 is mounted on the second speaker mounting member 22. The second speaker mounting member 22 is provided with a second deflection shaft 224. The axis of the second deflection shaft 224 is oriented vertically, and the second speaker mounting member 22 can rotate horizontally around the second deflection shaft 224. The two ends of the connecting rod assembly 3 are respectively connected to the first speaker mounting member 12 and the second speaker mounting member 22.

[0038] Specifically, the first speaker body 11 is the core component for directional sound generation, and the first speaker mounting part 12 is a rigid frame supporting the first speaker body 11. The first speaker body 11 is fixedly installed in the middle position of the first speaker mounting part 12 by snap-fit ​​screws or adhesive. The first deflection shaft 124 is a cylindrical shaft, vertically arranged at the upper and lower ends of the first speaker mounting part 12, with its axis extending vertically, serving as the central axis for the horizontal rotation of the first speaker mounting part 12. The second speaker body 21 has the same structure as the first speaker body 11 and is a symmetrically arranged directional sound generation component. The second speaker mounting part 22 has the same structure as the first speaker mounting part 12, with the second speaker body 21 fixedly installed in the middle position of the second speaker mounting part 22. The second deflection shaft 224 is a cylindrical shaft, vertically arranged at the upper and lower ends of the second speaker mounting part 22, with its axis extending vertically, serving as the central axis for the horizontal rotation of the second speaker mounting part 22. The left and right ends of the connecting rod assembly 3 are respectively connected to the inner parts of the first speaker mounting part 12 and the second speaker mounting part 22.

[0039] Specifically, the vertical deflection axis provides a stable horizontal rotation axis for the speaker mounting component, allowing the speaker mounting component to drive the speaker body to rotate smoothly in the horizontal plane and accurately fit the position of the user's ears. By using the speaker mounting component with the vertical deflection axis to support the speaker body, the stability and accuracy of the horizontal rotation of the speaker components are ensured, guaranteeing a stable and reliable directional sound effect.

[0040] Continue to refer to Figure 5In one embodiment, the linkage assembly 3 includes a first linkage 31, a second linkage 32, and a rotating member 33. The first linkage 31 and the second linkage 32 are arranged in the left-right direction, and the axis of the rotating member 33 faces the front-back direction. One end of the first linkage 31 is rotatably connected to one end of the rotating member 33, and the other end of the first linkage 31 is connected to the first speaker mounting member 12. One end of the second linkage 32 is rotatably connected to the other end of the rotating member 33, and the other end of the second linkage 32 is connected to the second speaker mounting member 22. The driving assembly 4 is connected to the rotating member 33 and is used to drive the rotating member 33 to rotate, thereby causing the first linkage 31 and the second linkage 32 to move away from or closer to each other in the left-right direction.

[0041] Specifically, the first link 31 and the second link 32 are long, rigid rods, both arranged horizontally in the left-right direction. The rotating component 33 is a rotatable transmission component, with its rotation axis arranged horizontally in the front-back direction. One end of the first link 31 is rotatably connected to one end of the rotating component 33 via a hinge shaft or a universal joint 34, and the other end of the first link 31 is rotatably connected to the inner part of the first speaker mounting component 12, or connected via a universal joint 34. One end of the second link 32 is rotatably connected to the other end of the rotating component 33 via a hinge shaft or a universal joint 34, and the other end of the second link 32 is rotatably connected to the inner part of the second speaker mounting component 22, or connected via a universal joint 34. The drive assembly 4 is in transmission engagement with the outer part of the rotating component 33, used to drive the rotating component 33 to rotate clockwise or counterclockwise around its axis. When the rotating component 33 rotates, it drives the first link 31 and the second link 32 to move away from or towards each other in a linear motion in the left-right direction. Specifically, the rotating component 33, as the core component of power conversion, converts the power of the drive assembly 4 into the pushing and pulling motion of the left and right connecting rods, thereby synchronously driving the audio mounting components on both sides to rotate. Through the connecting rod assembly 3 composed of the first connecting rod 31, the second connecting rod 32, and the rotating component 33, the synchronous transmission of power is achieved, ensuring that the rotation angle of the audio components on both sides is consistent and improving the synchronicity of angle adjustment.

[0042] Continue to refer to Figure 5 In this embodiment, the rotating component 33 includes a central rod 331, a swing rod 332, and a rotating shaft 333. The central rod 331 has a central hole, and the rotating shaft 333 passes through the central hole. The rotating shaft 333 is oriented in the front-back direction. The swing rod 332 is connected to one side of the central rod 331. The driving assembly 4 is connected to the swing rod 332 and is used to drive the swing rod 332 to rotate around the rotating shaft 333 so that the rotating component 33 rotates.

[0043] Specifically, the central rod 331 is a long, rigid rod that serves as the main load-bearing structure of the rotating component 33. A circular central hole extending from front to back is located at the center of the central rod 331. The rotating shaft 333 is a cylindrical shaft that passes through the central hole of the central rod 331, with both ends fixed and the shaft extending along the front-back direction. The swing rod 332 is a long, strip-shaped rod that is fixedly connected to one side of the outer wall of the central rod 331, forming an integral or fixed connection structure with the central rod 331. The drive assembly 4 forms a transmission connection with the free end of the swing rod 332, driving the swing rod 332 to rotate around the rotating shaft 333. When the swing rod 332 rotates, it drives the central rod 331 to rotate synchronously around the rotating shaft 333, thereby enabling the entire rotating component 33 to complete its rotational motion. Specifically, the rotating shaft 333 provides a stable rotation center for the rotating component 33, the swing rod 332 receives the power from the drive assembly 4 and drives the central rod 331 to rotate, thus realizing the stable transmission of power. The rotating component 33, composed of the central rod 331, the swing rod 332, and the rotating shaft 333, converts linear power into rotational power. The structure is simple and the transmission efficiency is high.

[0044] Continue to refer to Figure 5 In this embodiment, the swing rod 332 is provided with a rotary drive groove 3321, which extends along the length of the swing rod 332. The rotary drive groove 3321 forms an angle with the axis of the central rod 331. The drive assembly 4 includes a rotary drive slider 432, which is slidably connected to the rotary drive groove 3321. The rotary drive slider 432 slides in the rotary drive groove 3321 in the left-right direction to drive the swing rod 332 to rotate around the rotating shaft 333.

[0045] Specifically, the rotary drive groove 3321 is a long, narrow through groove that extends along the length of the swing rod 332 and is formed on the rod body of the swing rod 332. The extension direction of the rotary drive groove 3321 forms a fixed inclined angle with the axis of the central rod 331. The rotary drive slider 432 is a cylindrical block component and is the transmission component of the drive assembly 4. The outer wall of the rotary drive slider 432 and the inner wall of the rotary drive groove 3321 form a sliding fit. When the rotary drive slider 432 moves linearly in the left and right direction, it slides inside the rotary drive groove 3321 and applies a lateral thrust to the swing rod 332. In particular, the inclined rotary drive groove 3321 cooperates with the rotary drive slider 432 to convert the left and right linear motion of the rotary drive slider 432 into the rotational motion of the swing rod 332, and the conversion of motion mode is achieved by utilizing the inclination angle of the groove. Specifically, due to the angle between the axis of the rotary drive groove 3321 and the axis of the central rod 331, the sliding of the rotary drive slider 432 in the rotary drive groove 3321 generates a tangential force on the swing rod 332. This tangential force drives the swing rod 332 to rotate around the pivot 333. When the swing rod 332 rotates, it drives the central rod 331 to rotate synchronously, thereby causing the rotating component 33 to rotate as a whole. When the rotating component 33 rotates, it drives the first speaker mounting component 12 and the second speaker mounting component 22 to deflect through the first connecting rod 31 and the second connecting rod 32. Through the sliding cooperation between the rotary drive groove 3321 and the rotary drive slider 432, the conversion from linear motion to rotational motion is accurately completed, ensuring the accuracy and stability of the transmission.

[0046] Reference Figure 4 Furthermore, the drive assembly 4 also includes a motor 41, a lead screw 42, and a slider 43. The output shaft of the motor 41 is connected to one end of the lead screw 42, which is arranged in the left-right direction. The slider 43 is connected to the lead screw 42 in a transmission manner, and the rotary drive slider 432 is disposed on the slider 43. When the motor 41 drives the lead screw 42 to rotate, the slider 43 moves in the left-right direction to drive the rotary drive slider 432 to slide along the rotary drive groove 3321.

[0047] Specifically, motor 41 is a rotary drive element that outputs power, with its output shaft horizontally positioned in the left-right direction. Lead screw 42 is a long, threaded rod, also horizontally positioned in the left-right direction. The output shaft of motor 41 is connected to one end of lead screw 42 via a coupling or coaxial fixing. Sliding member 43 is a block-shaped moving component, equipped with a nut 433 or having an internal threaded structure that forms a threaded transmission engagement with lead screw 42. Rotary drive slider 432 is fixedly mounted on the outer wall of the front end of sliding member 43 and moves synchronously with sliding member 43. When motor 41 drives lead screw 42 to rotate, lead screw 42 drives sliding member 43 to perform linear reciprocating motion in the left-right direction via threaded transmission, and sliding member 43 drives rotary drive slider 432 to move synchronously left and right.

[0048] Specifically, motor 41 provides rotational power, and lead screw 42 converts the rotational power into linear power for sliding member 43, thereby driving rotary drive slider 432 to move. When motor 41 rotates forward, the output shaft of motor 41 drives lead screw 42 to rotate. The rotation of lead screw 42 drives sliding member 43 to move away from motor 41 along the length of lead screw 42. When sliding member 43 moves, it drives rotary drive slider 432 to move synchronously. Rotary drive slider 432 slides along rotary drive groove 3321 and drives rotating member 33 to rotate. Rotation of rotating member 33 drives first connecting rod 31 and second connecting rod 32 to move in opposite directions, thereby pushing first speaker mounting member 12 and second speaker mounting member 22 to deflect inward. When motor 41 rotates in reverse, lead screw 42 rotates in the opposite direction, driving sliding member 43 to move towards motor 41 to reset. Sliding member 43 drives rotary drive slider 432 to slide in the opposite direction. Rotating member 33 rotates in the opposite direction. First connecting rod 31 and second connecting rod 32 move towards each other, pulling first speaker mounting member 12 and second speaker mounting member 22 to deflect outward to reset. By cooperating with the motor 41, lead screw 42, and slider 43, the rotational motion of the motor 41 is converted into the linear motion of the slider 43. Then, by cooperating with the rotary drive slider 432 and the rotary drive groove 3321, it is converted into the rotational motion of the rotating component 33, thus realizing the electric adjustment of the speaker angle. The adjustment process is automated, and the user does not need to operate manually, which greatly improves the convenience of use. Moreover, the drive mechanism of the motor 41, lead screw 42, and slider 43 moving in the left and right direction cleverly utilizes the lateral space between the two speaker components, avoiding the occupation of extra space in the front and back directions. It can be adapted to thin and small headrests with limited internal space. The overall structure is compact and occupies little space.

[0049] Reference Figures 10-12 In one embodiment, the adaptive directional speaker device further includes a rebound assembly 6, which includes a first limiting member 61, a second limiting member 62, a first elastic member 63, and a second elastic member 64. The first limiting member 61 and the second limiting member 62 are fixed to the support assembly 5 at intervals in the left-right direction. The first elastic member 63 is disposed on the first limiting member 61, and the second elastic member 64 is disposed on the second limiting member 62. The first speaker mounting member 12 is slidably connected to the first limiting member 61 in the front-back direction, and the second speaker mounting member 22 is slidably connected to the second limiting member 62 in the front-back direction. The first elastic member 63 forms an elastic support engagement with the rear side of the first speaker mounting member 12, and the second elastic member 64 forms an elastic support engagement with the rear side of the second speaker mounting member 22. The first elastic member 63 and the second elastic member 64 can undergo compression deformation as the first speaker mounting member 12 and the second speaker mounting member 22 move backward.

[0050] Specifically, the first limiting member 61 and the second limiting member 62 are rigid fixed components, fixedly installed on the left and right sides of the support assembly 5 at intervals along the left and right directions. The first elastic member 63 is an elastic deformation element installed at a preset position of the first limiting member 61, and the second elastic member 64 is an elastic deformation element installed at a preset position of the second limiting member 62. The elastic deformation element can be, for example, a spring, a torsion spring, a sheet spring, a rubber elastomer, or a gas spring. The first speaker mounting member 12 forms a sliding engagement with the first limiting member 61 in the front-back direction, and can slide smoothly back and forth along the first limiting member 61. The second speaker mounting member 22 forms a sliding engagement with the second limiting member 62 in the front-back direction, and can slide smoothly back and forth along the second limiting member 62. The front end of the first elastic member 63 is in close contact with the rear outer wall of the first audio mounting member 12 to form an elastic support fit. The front end of the second elastic member 64 is in close contact with the rear outer wall of the second audio mounting member 22 to form an elastic support fit. The first elastic member 63 and the second elastic member 64 can be compressed and produce elastic deformation when the audio mounting member moves backward. Specifically, when the user's head leans against the headrest 100, the first speaker assembly 1 and the second speaker assembly 2 are subjected to head pressure. The first speaker mounting member 12 and the second speaker mounting member 22 slide backward along the first limiting member 61 and the second limiting member 62, respectively. The first elastic member 63 and the second elastic member 64 undergo compression deformation as the first speaker mounting member 12 and the second speaker mounting member 22 move backward. The compression deformation of the elastic members absorbs the impact force when the head leans against the head, providing a flexible buffer for the speaker assembly, allowing the speaker assembly to move backward with the head pressure instead of rigidly pressing against the user's head. When the user's head leaves the headrest 100, the elastic force of the first elastic member 63 and the second elastic member 64 pushes the first speaker mounting member 12 and the second speaker mounting member 22 forward to slide back to their original position. By setting the first limiting member 61 and the second limiting member 62 to slide and connect with the speaker mounting component, and cooperating with the elastic support of the first elastic member 63 and the second elastic member 64, the speaker achieves flexible rebound buffering, eliminating the hard, resistant foreign object feeling generated by the speaker when the user's head is leaning against it. This solves the problem of existing headrest speakers having a hard, resistant foreign object feeling and poor user comfort when the head is leaning against them due to rigid fixation, and effectively improves the user's user comfort.

[0051] Continue to refer to Figures 10-12 In this embodiment, the first limiting member 61 is provided with a first guide groove 611, and the second limiting member 62 is provided with a second guide groove 621. Both the first guide groove 611 and the second guide groove 621 extend in the front-back direction. The first deflection shaft 124 is slidably connected to and rotatably engaged with the first guide groove 611, and the first deflection shaft 124 can rotate around its own axis within the first guide groove 611. The second deflection shaft 224 is slidably connected to and rotatably engaged with the second guide groove 621, and the second deflection shaft 224 can rotate around its own axis within the second guide groove 621.

[0052] Specifically, the first guide groove 611 is a long, narrow through groove, horizontally formed on the rod of the first limiting member 61 in the front-to-back direction. The second guide groove 621 is a long, narrow through groove, horizontally formed on the rod of the second limiting member 62 in the front-to-back direction. The first deflection shaft 124 is a cylindrical structure, with its shaft embedded inside the first guide groove 611, forming both a sliding connection and a rotational engagement with the first guide groove 611. It can slide back and forth along the first guide groove 611 and rotate around its own axis. The second deflection shaft 224 is a cylindrical structure, with its shaft embedded inside the second guide groove 621, forming both a sliding connection and a rotational engagement with the second guide groove 621. It can slide back and forth along the second guide groove 621 and rotate around its own axis. In essence, the front-to-back extending guide grooves provide a sliding path for the deflection shafts while allowing them to rotate autonomously, thus combining the dual functions of rebound buffering and horizontal rotation of the audio components. By setting a guide groove extending in the front-to-back direction on the limiting component and a cylindrical deflection shaft that slides and rotates with the guide groove on the speaker mounting component, the sliding and rotational connection between the speaker mounting component and the limiting component is realized. The guide groove provides precise guidance for the front-to-back movement of the speaker mounting component, and the cylindrical deflection shaft enables the speaker mounting component to deflect horizontally, realizing the integration of spring-back function and angle adjustment function. The structure is compact, the shaft has two uses, and the functions are rich.

[0053] Continue to refer to Figures 10-12 Furthermore, the first limiting member 61 is provided with a first positioning post 612, the second limiting member 62 is provided with a second positioning post 622, the first elastic member 63 is a first torsion spring, the second elastic member 64 is a second torsion spring, the first torsion spring is sleeved on the first positioning post 612, the second torsion spring is sleeved on the second positioning post 622, one end of the first torsion spring abuts against the rear side of the first deflection shaft 124, and one end of the second torsion spring abuts against the rear side of the second deflection shaft 224.

[0054] Specifically, the first positioning post 612 is a cylindrical protrusion, vertically fixed to the top outer wall of the first limiting member 61, used for the installation and positioning of the first torsion spring. The second positioning post 622 is a cylindrical protrusion, vertically fixed to the top outer wall of the second limiting member 62, used for the installation and positioning of the second torsion spring. The first torsion spring is a helical elastic torsion spring, sleeved on the outside of the first positioning post 612, forming a stable sleeve engagement with the first positioning post 612. The second torsion spring is a helical elastic torsion spring, sleeved on the outside of the second positioning post 622, forming a stable sleeve engagement with the second positioning post 622. One end of the first torsion spring extends forward and abuts against the rear outer wall of the first deflection shaft 124, and one end of the second torsion spring extends forward and abuts against the rear outer wall of the second deflection shaft 224. Specifically, when the user's head leans against the headrest 100, the first deflection shaft 124 and the second deflection shaft 224 slide backward along the guide groove. The first deflection shaft 124 and the second deflection shaft 224 push one end of the first torsion spring and the second torsion spring to move backward. The torsion spring is compressed and produces elastic deformation. The elastic force of the torsion spring acts on the deflection shaft, providing forward elastic support for the deflection shaft and forming a buffer. When the user's head leaves the headrest 100, the elastic force of the torsion spring pushes the deflection shaft to slide forward along the guide groove to reset. Since the torsion spring is sleeved on the positioning post, the position of the positioning post is fixed, and one end of the torsion spring abuts against the deflection shaft. On the rear side, as the deflection shaft moves backward along the guide groove, the relative position between the deflection shaft and the positioning post changes, and the direction of the torsion spring's elastic force changes accordingly. The angle θ between the direction of the torsion spring's elastic force and the extension direction of the guide groove gradually increases. This change in angle θ causes a change in the component force F1 of the torsion spring's elastic force F along the guide groove direction, F1 = F·cosθ. The increase in the torsion spring's elastic force F and the increase in angle θ cause a decrease in cosθ, which cancel each other out, making the component force F1 of the torsion spring's elastic force along the guide groove direction tend to stabilize. The reaction force felt by the user's head tends to be constant, and the feeling of pressure does not increase with the depth of leaning. By setting the elastic element as a torsion spring, which is sleeved on the positioning post and with one end abutting against the rear side of the deflection shaft, an elastic support cooperation between the elastic element and the speaker mounting component is achieved. The torsion spring structure is simple, easy to install, and has a stable and reliable elastic restoring force. At the same time, the change in the angle between the direction of the torsion spring's elastic force and the direction of the guide groove makes the component force of the torsion spring's elastic force along the guide groove direction tend to stabilize, achieving a constant reaction force when the user leans against it, further improving the user's comfort.

[0055] Continue to refer to Figure 5 , Figures 10-12 In this embodiment, the adaptive directional speaker device further includes a universal joint 34. The two ends of the linkage assembly 3 are respectively connected to the first speaker mounting member 12 and the second speaker mounting member 22 through the universal joint 34. The universal joint 34 is configured to provide a degree of freedom in the front-back direction to accommodate the displacement of the linkage assembly 3 when the first speaker mounting member 12 and the second speaker mounting member 22 move back and forth.

[0056] Specifically, the universal joint 34 is a multi-directional freely rotating connecting component, which can adopt a ball joint or a cross joint structure to achieve flexible rotation in multiple directions. The left and right ends of the linkage assembly 3 are connected to the inner parts of the first speaker mounting part 12 and the second speaker mounting part 22 through the universal joint 34, respectively. The universal joint 34 provides a degree of freedom of movement in the front and back directions, compensating for the linkage displacement deviation caused by the front and back movement of the first speaker mounting part 12 and the second speaker mounting part 22. Specifically, when the user's head rests against the headrest 100, the first deflection shaft 124 and the second deflection shaft 224 slide backward along the guide groove, and the positions of the first speaker mounting part 12 and the second speaker mounting part 22 move backward accordingly. The connection point between the linkage assembly 3 and the speaker mounting part also undergoes a front and back displacement. The front and back direction freedom provided by the universal joint 34 allows the linkage assembly 3 to adapt to this position change, ensuring that the transmission function of the linkage assembly 3 is not affected. By setting universal joints 34 at both ends of the linkage assembly 3, the universal joints 34 provide freedom in the front and back directions, enabling the linkage assembly 3 to adapt to the position changes caused by the front and back movement of the deflection shaft. This ensures the coordinated operation of the springback function and the angle adjustment function, eliminates motion interference, improves the motion adaptability of the mechanism, reduces space occupation, and results in a compact structure.

[0057] Reference Figures 13-18 In one embodiment, the support assembly 5 includes a base 51, a first forward extension 54, and a second forward extension 55. The base 51 is fixedly disposed, and the first forward extension 54 and the second forward extension 55 are fixedly spaced on the left and right sides of the base 51 in the left-right direction. The first forward extension 54 and the second forward extension 55 extend forward from the base 51 in the front-back direction, and the extended ends of the first forward extension 54 and the second forward extension 55 form a first rotating connection portion 541 and a second rotating connection portion 551. The rotation axes of the first rotating connection portion 541 and the second rotating connection portion 551 are arranged in the vertical direction. The first audio component 1 is rotatably connected to the first rotating connection portion 541, and the second audio component 2 is rotatably connected to the second rotating connection portion 551.

[0058] Specifically, the base 51 is a plate-shaped rigid fixed base plate, fixedly installed in a preset position inside the headrest 100, serving as the core mounting foundation for the support assembly 5. The first forward extension 54 and the second forward extension 55 are extension members of a triangular frame, L-shaped frame, or cantilever beam structure, fixed at intervals along the left and right sides of the outer wall of the base 51, both extending forward from the front end of the base 51. The first rotary connection part 541 is a rotary connection component, located at the extended end of the first forward extension 54, with the rotation axis set in the vertical direction. The second rotary connection part 551 is a rotary connection component, located at the extended end of the second forward extension 55, with the rotation axis set in the vertical direction. The first rotary connection part 541 and the second rotary connection part 551 can be structures such as through holes, bearing seats, or bushings. The first speaker assembly 1 is rotatably engaged with the first rotating connecting part 541, allowing it to rotate horizontally around the vertical axis of the first rotating connecting part 541. The second speaker assembly 2 is rotatably engaged with the second rotating connecting part 551, allowing it to rotate horizontally around the vertical axis of the second rotating connecting part 551. Specifically, the forward extension moves the rotating connecting part forward, allowing the speaker assemblies to fold towards the front of the base 51 when rotating. The first speaker assembly 1 rotates inward from the left side of the base 51, and the second speaker assembly 2 rotates inward from the right side of the base 51. The two speaker assemblies rotate towards each other and fold towards the front of the base 51. The rotation of the two speaker assemblies simultaneously causes the soft foam of the headrests 100 on both sides to fold inward, realizing the folding function of the headrests 100. Through the support assembly 5 composed of the first forward extension 54 and the second forward extension 55 of the base 51, the rotation fulcrum of the speaker assembly is moved forward, realizing the folding rotation of the speaker assembly, improving the portability of the product, and facilitating transportation and storage.

[0059] Reference Figures 1-19This application embodiment also provides a headrest 100, which is a head support component of a sofa or chair. The headrest 100 is made of sponge filling, spring support, or a composite structure. The headrest 100 includes a left side area 101, a middle area 102, and a right side area 103. The headrest 100 has an internal space for receiving the adaptive directional sound device, which is located inside the headrest 100. The adaptive directional sound device is integrated with the headrest 100, and the support component 5 of the adaptive directional sound device is fixedly connected to the internal frame of the headrest 100. The first sound component 1 and the second sound component 2 are located on the left and right sides of the headrest 100, respectively. The rebound component 6, the connecting rod component 3, and the drive component 4 are located in the middle area 102 of the headrest 100. Specifically, the adaptive directional speaker device is integrated into the headrest 100, resulting in a clean overall appearance that does not occupy external space. When the user uses the headrest 100, the pressure sensing unit 600 detects the user's posture pressure data in real time. The control unit 500 controls the drive component 4 to operate based on the posture pressure data. The drive component 4 drives the linkage component 3 to move, and the linkage component 3 simultaneously drives the first speaker component 1 and the second speaker component 2 to rotate horizontally, ensuring that the speakers are always aligned with the user's ears on both sides of their head, achieving precise directional sound wave transmission. At the same time, the rebound component 6 provides flexible cushioning for the user, eliminating the feeling of foreign objects when leaning against the head. By placing the adaptive directional speaker device inside the headrest 100, the audio function and the headrest 100 are integrated into a single design. The headrest 100 provides both head support and adaptive directional speaker functionality, offering rich features and a clean and aesthetically pleasing appearance. Furthermore, the adaptive directional speaker device is hidden inside the headrest 100, without affecting its overall appearance or user comfort.

[0060] Reference Figures 1-19This application embodiment also provides a sofa, which includes a headrest 100, a backrest 200, and a seat cushion 300. The headrest 100 is disposed on top of the backrest 200, and the backrest 200 is disposed on the rear side of the seat cushion 300. The headrest 100, backrest 200, and seat cushion 300 together constitute the main support structure of the sofa, providing support for the user when sitting or lying down. At least one of the headrest 100, backrest 200, and seat cushion 300 is provided with a pressure sensing unit 600, which is a pressure sensor 400, a piezoelectric sensor, a strain gauge sensor, or a thin-film pressure sensor 400. The pressure sensing unit 600 is fixedly laid on the surface of the seat cushion 300, the surface of the backrest 200, or the surface of the headrest 100, and is used to collect the user's sitting posture and leaning pressure signals in real time. Specifically, when a user sits on the sofa, the pressure sensing unit 600 detects the user's posture pressure data in real time and transmits it to the control unit 500. The control unit 500 determines the user's posture changes based on the posture pressure data and generates corresponding control commands to control the drive component 4. The drive component 4 drives the linkage component 3 to move, and the linkage component 3 synchronously drives the first speaker component 1 and the second speaker component 2 to rotate horizontally, ensuring that the speakers are always pointed at the user's ears on both sides of the head, achieving adaptive adjustment of the speaker angle. At the same time, the rebound component 6 provides a soft cushion for the user, eliminating the feeling of foreign objects when leaning against the head. By setting up a headrest 100 with an adaptive directional speaker device in the sofa, and cooperating with the pressure sensing unit 600 to detect posture, the adaptive adjustment function of the speaker angle and the soft rebound cushioning function are realized. The user does not need to manually adjust the speaker angle; the system automatically adjusts the speaker orientation according to the user's posture. At the same time, the soft rebound eliminates the feeling of foreign objects when leaning against the head, greatly improving the user's auditory experience and comfort. The sofa product is feature-rich.

[0061] This invention also provides a sofa control method for controlling the sofa described in the above embodiments, the method comprising steps S101-S102.

[0062] S101. Real-time collection of sitting pressure data, wherein the sitting pressure data includes at least one of headrest pressure data, backrest pressure data, and seat cushion pressure data; S102. Based on the sitting pressure data, control the drive assembly to drive the linkage assembly to move, so as to adjust the rotation angle of the first speaker assembly and the second speaker assembly.

[0063] In this embodiment, the sitting pressure data refers to the pressure signal data generated when a user sits on a sofa. The sitting pressure data includes at least one of headrest pressure data, backrest pressure data, and seat cushion pressure data. The headrest pressure data is the pressure signal data generated when the user's head leans against the headrest, the backrest pressure data is the pressure signal data generated when the user's back leans against the backrest, and the seat cushion pressure data is the pressure signal data generated when the user sits on the seat cushion.

[0064] Specifically, the pressure sensing unit collects pressure signals from the seat cushion, backrest, and headrest in real time, converts these pressure signals into digital signals, and transmits them to the control unit. The control unit analyzes and processes the received posture pressure data, and generates corresponding control commands based on the magnitude and trend of the posture pressure data. The control commands include parameters such as the direction of operation, speed of operation, and duration of operation of the drive component. The control unit sends the control commands to the drive component, which drives the linkage assembly to move according to the control commands. The linkage assembly synchronously drives the first and second speaker components to rotate horizontally, thereby adjusting the orientation angle of the speakers.

[0065] Specifically, when a user sits on a sofa, the pressure sensing unit detects the user's posture pressure data in real time and transmits it to the control unit. The control unit judges the user's posture changes based on the posture pressure data and generates corresponding control commands to control the drive component to work. The drive component outputs driving force, which is transmitted to the first and second speaker components via the linkage assembly. Under the drive of the drive component, the linkage assembly synchronously drives the first and second speaker components to rotate horizontally, thereby adaptively adjusting the direction of the speakers according to the user's posture changes, so that the speakers are always pointed at the user's ears.

[0066] By collecting real-time sitting pressure data and controlling the drive component to drive the linkage component based on the data, the adaptive adjustment function of the speaker angle is realized. This solves the problem that existing headrest directional speakers cannot adaptively adjust the speaker orientation according to the user's sitting posture and the sound propagation is easily deviated, resulting in a poor listening experience. It ensures accurate directional sound propagation and effectively improves the user's listening experience.

[0067] It should be noted that there are multiple ways to control the movement of the drive component and linkage assembly based on the posture pressure data. For example, the movement can be controlled by comparing the pressure magnitude with a threshold; that is, when the posture pressure data is greater than a preset threshold, an angle adjustment action is performed, and when the posture pressure data is less than a preset threshold, a reset action is performed. Alternatively, the user's posture state can be identified based on the pressure signal, and then the movement of the drive component and linkage assembly can be controlled based on the posture state. That is, the posture pressure data is first analyzed and processed to identify the posture type, such as upright sitting, reclining back, or head-leaning, and then the movement is determined based on the different posture states. The target rotation angle can be controlled by the drive component to drive the linkage assembly; alternatively, the drive component can be controlled to drive the linkage assembly based on changes in the pressure curve, i.e., analyzing the curve characteristics of the sitting pressure data over time, determining the direction and speed of the user's sitting posture change based on the curve trend, and controlling the drive component to drive the linkage assembly accordingly; and the drive component can be controlled to drive the linkage assembly based on the pressure distribution combined with an AI model, i.e., using artificial intelligence algorithms to learn and identify the spatial distribution characteristics of sitting pressure data to achieve more accurate sitting posture judgment and angle adjustment control. All of the above implementation methods are within the scope of protection of this application and are not limited herein.

[0068] In one embodiment, the control method of this embodiment further includes steps S103-S105.

[0069] S103. Determine whether the sitting pressure data is greater than or equal to a preset pressure threshold. S104. If the sitting pressure data is greater than or equal to a preset pressure threshold, control the first audio component and the second audio component to play. S105. If the sitting pressure data is less than a preset pressure threshold, then control the first audio component and the second audio component to stop playing.

[0070] In this embodiment, the preset pressure threshold is a critical pressure value preset within the control unit to determine whether a user has sat down or leaned against something. Specifically, the control unit first acquires real-time collected sitting pressure data, then compares the sitting pressure data with the preset pressure threshold, and subsequently executes corresponding control operations based on the comparison result. When the sitting pressure data is greater than or equal to the preset pressure threshold, the control unit controls the first and second speaker components to start playing; when the sitting pressure data is less than the preset pressure threshold, the control unit controls the first and second speaker components to stop playing. Specifically, by comparing the pressure data with the preset threshold to determine whether a user has sat down, automatic start and stop of speaker playback can be achieved, avoiding unnecessary power consumption when no one is present and solving the problem of speakers not being able to intelligently start and stop. For example, after the user leaves the sofa, the sitting pressure data decreases below the preset pressure threshold, and the speaker automatically stops playing; after the user sits down, the pressure data reaches the threshold, and the speaker automatically starts playing. By judging the relationship between the sitting pressure data and the preset pressure threshold, intelligent start and stop of speaker playback is achieved, improving the device's intelligence level and energy-saving effect.

[0071] In one embodiment, step S102 specifically performs the following steps: determining the user's sitting posture state based on at least one of the headrest pressure data, the backrest pressure data, and the seat cushion pressure data; and controlling the drive assembly to drive the linkage assembly to move based on the sitting posture state.

[0072] In this embodiment, the sitting posture refers to the different body postures of the user while sitting on the sofa. Specifically, the control unit first acquires at least one of the real-time collected headrest pressure data, backrest pressure data, and seat cushion pressure data. Then, it performs comprehensive analysis on the multiple pressure data and determines the user's current sitting posture based on the magnitude and distribution of the pressure data. Subsequently, the control unit outputs corresponding control commands based on the determined sitting posture to control the drive component to drive the linkage component to move, thereby adjusting the rotation angle of the first and second speaker components. The control unit internally stores a posture determination algorithm. This algorithm identifies the user's current posture based on the combined characteristics of different pressure data. For example, when the seat cushion pressure data is high and the backrest and headrest pressure data are both zero, it is determined to be a straight sitting posture; when the seat cushion and backrest pressure data are both high and the headrest pressure data is zero, it is determined to be a reclining posture; when the seat cushion, backrest, and headrest pressure data are all high, it is determined to be a head-leaning posture. After determining the posture, the control unit generates corresponding control commands based on the posture. The control commands include information such as the target rotation angle. The control unit sends the control commands to the drive assembly, and the drive assembly drives the linkage assembly to move according to the control commands. It should be noted that there are multiple ways to determine the user's posture based on posture pressure data in this application. It can be determined by comparing pressure data from a single part with a threshold, by analyzing the combination of pressure data from multiple parts, by identifying pressure change trends, or by intelligently determining the posture by combining pressure data with an algorithm model. No limitation is made here.

[0073] Specifically, by determining the sitting posture based on pressure data, the system can accurately match the position of the user's ears in different postures and adjust the speaker angle accordingly, thus solving the problem of sound propagation deviation under different sitting postures. By determining the sitting posture based on the pressure data and controlling the movement of the drive component and linkage component based on the sitting posture, intelligent adjustment of the speaker angle is achieved, ensuring that the speaker is always pointed at the user's ears and effectively solving the problem of sound propagation deviation.

[0074] In one embodiment, the sitting posture includes at least one of an upright sitting posture, a reclining back posture, and a head-leaning posture. When the step of controlling the drive assembly to move the linkage assembly according to the sitting posture is executed, the following steps are specifically performed: when the sitting posture is an upright sitting posture, the first and second speaker assemblies are controlled to extend outward to a first angle; when the sitting posture is a reclining back posture, the first and second speaker assemblies are controlled to retract inward to a second angle; when the sitting posture is a head-leaning posture, the first and second speaker assemblies are controlled to retract inward to a third angle; wherein the first angle, the second angle, and the third angle increase sequentially.

[0075] In this embodiment, the first angle, second angle, and third angle refer to the angle values ​​of the speaker components after rotation relative to their initial positions. The first angle is the angle at which the speaker components are extended when in an upright sitting position, the second angle is the angle at which the speaker components are retracted when in a reclining position, and the third angle is the angle at which the speaker components are retracted when the head is leaning back. The sequential increase of the first angle, second angle, and third angle means that the degree to which the speaker components retract inward increases as they move from an upright sitting position to a reclining position and then to a head-leaning position. Specifically, the control unit determines the corresponding target rotation angle based on different sitting postures. When the sitting posture is upright, the control unit determines the first angle as the target rotation angle and controls the drive component to drive the linkage assembly to move, causing the first speaker components and the second speaker components to extend outward to the first angle. The setting of the first angle ensures that the speaker orientation is aligned with the user's ear position in an upright sitting position. In an upright sitting position, the user's ear position is relatively close to the front of the sofa, and the outward extension of the speaker components aligns the speaker orientation with the ear position. When the sitting posture is reclining, the control unit determines the second angle as the target rotation angle and controls the drive component to drive the linkage assembly to move, causing the first speaker components and the second speaker components to extend outward to the first angle. When the first and second speaker components retract inward to a second angle, which is greater than the first angle, the user's ear position shifts backward relative to the upright sitting position when the back is tilted back. The inward retraction of the speaker components allows the speaker orientation to adjust according to the change in ear position. When the sitting posture is a head-leaning position, the control unit determines the third angle as the target rotation angle and controls the drive component to drive the linkage component to move, causing the first and second speaker components to retract inward to the third angle, which is greater than the second angle. In the head-leaning position, the user's ear position is further back than in the head-leaning position. The further inward retraction of the speaker components allows the speaker orientation to align with the rearmost ear position.

[0076] Specifically, by setting three progressively increasing angle values, the speaker components can automatically adjust to the corresponding angles in different sitting postures, ensuring that the speakers are always pointed at the user's ears, achieving precise matching between the speaker angle and the user's posture. For example, when the user is sitting upright, their ears are located relatively close to the front of the sofa, and the speaker components extend outwards to 10 degrees, with the speaker facing directly at the ears. When the user leans back, their ears shift backwards, and the speaker components retract inwards to 20 degrees, with the speaker facing backwards following the ear's position. When the user's head is leaning back, their ears move further back to the rearmost position, and the speaker components retract inwards to 30 degrees, aligning the speaker facing with the rearmost ear position. These three angles increase progressively, ensuring the speakers are always pointed at the user's ears. By setting the first, second, and third angles for upright sitting, leaning back, and head-leaning positions respectively, with these three angles increasing progressively, adaptive adjustment of the speaker angle with changing posture is achieved. This effectively solves the problem of existing headrest-oriented speakers failing to adaptively adjust speaker orientation according to user posture, ensuring a good listening experience in different sitting positions.

[0077] In one embodiment, when the step of controlling the drive assembly to drive the linkage assembly to move according to the sitting posture is executed, the following steps are specifically performed: determining the target rotation angle according to the sitting posture; obtaining the current rotation angles of the first speaker assembly and the second speaker assembly; calculating the angle difference based on the target rotation angle and the current rotation angle; and controlling the operating direction and operating duration of the drive assembly according to the angle difference, so as to drive the linkage assembly to rotate the first speaker assembly and the second speaker assembly to the target rotation angle.

[0078] In this embodiment, the target rotation angle refers to the target angle value that the speaker component should rotate to, determined based on the user's current sitting posture; the current rotation angle refers to the actual angular position of the speaker component; the angle difference refers to the difference between the target rotation angle and the current rotation angle; the operating direction refers to the rotation direction of the drive component; and the operating duration refers to the length of time the drive component needs to operate.

[0079] Specifically, the control unit determines the target rotation angle based on the user's current sitting posture. For example, a straight sitting posture corresponds to the first angle, a reclining posture corresponds to the second angle, and a head-leaning posture corresponds to the third angle. The control unit acquires the current rotation angles of the first and second speaker components, which can be detected in real time by angle sensors and fed back to the control unit. The control unit calculates the angle difference between the target rotation angle and the current rotation angle. The angle difference equals the target rotation angle minus the current rotation angle. The angle difference can be positive or negative; a positive value indicates that rotation in the forward direction is required, and a negative value indicates that rotation in the reverse direction is required. The control unit determines the operating direction and operating time of the drive component based on the angle difference. The operating time is approximately equal to the angle difference divided by the rotational speed of the drive component. The control unit generates corresponding control commands and sends them to the drive component. The drive component drives the linkage assembly to move according to the control commands, and the linkage assembly drives the first and second speaker components to rotate to the target rotation angle.

[0080] Specifically, by acquiring the current rotation angle and comparing it with the target rotation angle, the angle difference is calculated. Based on this angle difference, the operating direction and duration of the drive component are controlled, achieving closed-loop control. This ensures the speaker component can precisely rotate to the target position, improving the accuracy and reliability of angle adjustment. For example, assuming the current speaker component angle is 15 degrees and the target rotation angle is 20 degrees, the angle difference is 5 degrees. The control unit determines that forward rotation is needed, and the drive component rotates forward for a certain period to bring the speaker component to 20 degrees. Conversely, assuming the current speaker component angle is 20 degrees and the target rotation angle is 10 degrees, the angle difference is -10 degrees. The control unit determines that reverse rotation is needed, and the drive component rotates in the opposite direction for a certain period to bring the speaker component to 10 degrees. By calculating the angle difference based on the target and current rotation angles and controlling the operating direction and duration of the drive component accordingly, precise adjustment of the speaker angle is achieved, ensuring the speaker is always pointed at the user's ears and effectively improving the user's auditory experience.

[0081] Please see Figure 20 , Figure 20 This is a computer device provided in the embodiments of this application. Figure 20 This is a schematic block diagram of a computer device. The computer device 500 can be a sofa or a device inside a sofa.

[0082] See Figure 20 The computer device 500 includes a processor 502, a memory, and a network interface 505 connected via a system bus 501. The memory may include a non-volatile storage medium 503 and internal memory 504.

[0083] The non-volatile storage medium 503 may store an operating system 5031 and a computer program 5032. The computer program 5032 includes program instructions that, when executed, cause the processor 502 to perform a sofa control method.

[0084] The processor 502 provides computing and control capabilities to support the operation of the entire computer device 500.

[0085] The internal memory 504 provides an environment for the execution of the computer program 5032 in the non-volatile storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a sofa control method.

[0086] This network interface 505 is used for network communication with other devices. Those skilled in the art will understand that... Figure 20 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device 500 to which the present application is applied. The specific computer device 500 may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0087] The processor 502 is used to run a computer program 5032 stored in a memory to implement the steps of the above method.

[0088] It should be understood that in the embodiments of this application, the processor 502 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0089] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program includes program instructions and can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0090] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An adaptive directional sound device, characterized in that, include: Support components are fixed in place; The first and second audio components are respectively rotatably mounted on both sides of the support component; A linkage assembly, the two ends of which are respectively connected to the first audio assembly and the second audio assembly; A drive assembly, connected to the linkage assembly, is used to drive the linkage assembly to move, so as to synchronously drive the first audio assembly and the second audio assembly to rotate horizontally; The pressure sensing unit is used to detect the user's sitting posture pressure data; The control unit is electrically connected to the pressure sensing unit and the drive assembly, respectively, and is used to control the drive assembly to drive the linkage assembly to move according to the sitting posture pressure data, so as to adjust the rotation angle of the first audio assembly and the second audio assembly.

2. The adaptive directional sound device according to claim 1, characterized in that, The first speaker assembly includes a first speaker body and a first speaker mounting component. The first speaker body is mounted on the first speaker mounting component, and the first speaker mounting component has a first deflection shaft with its axis pointing vertically. The first speaker mounting component can rotate horizontally around the first deflection shaft. The second speaker assembly includes a second speaker body and a second speaker mounting component. The second speaker body is mounted on the second speaker mounting component, and the second speaker mounting component has a second deflection shaft with its axis pointing vertically. The second speaker mounting component can rotate horizontally around the second deflection shaft. The two ends of the connecting rod assembly are respectively connected to the first speaker mounting component and the second speaker mounting component.

3. The adaptive directional sound device according to claim 2, characterized in that, The linkage assembly includes a first link, a second link, and a rotating component. The first link and the second link are arranged in a left-right direction, and the axis of the rotating component faces the front-back direction. One end of the first link is rotatably connected to one end of the rotating component, and the other end of the first link is connected to the first speaker mounting component. One end of the second link is rotatably connected to the other end of the rotating component, and the other end of the second link is connected to the second speaker mounting component. The drive assembly is connected to the rotating component and is used to drive the rotating component to rotate, causing the first link and the second link to move away from or closer to each other in the left-right direction.

4. The adaptive directional sound device according to claim 3, characterized in that, The rotating component includes a central rod, a swing rod, and a rotating shaft. The central rod has a central hole, and the rotating shaft passes through the central hole and is oriented in the front-back direction. The swing rod is connected to one side of the central rod, and the driving assembly is connected to the swing rod to drive the swing rod to rotate around the rotating shaft, thereby causing the rotating component to rotate.

5. The adaptive directional sound device according to claim 4, characterized in that, The swing arm has a rotary drive groove that extends along the length of the swing arm and forms an angle with the axis of the central rod. The drive assembly includes a rotary drive slider that is slidably connected to the rotary drive groove. The rotary drive slider slides in the rotary drive groove in the left-right direction to drive the swing arm to rotate around the pivot.

6. The adaptive directional sound device according to claim 5, characterized in that, The drive assembly further includes a motor, a lead screw, and a slider. The output shaft of the motor is connected to one end of the lead screw, which is arranged in a left-right direction. The slider is driven by the lead screw, and the rotary drive slider is disposed on the slider. When the motor drives the lead screw to rotate, the slider moves in a left-right direction to drive the rotary drive slider to slide along the rotary drive groove.

7. The adaptive directional sound device according to claim 2, characterized in that, It also includes a rebound assembly, which includes a first limiting member, a second limiting member, a first elastic member, and a second elastic member. The first limiting member and the second limiting member are fixed to the support assembly at a distance in the left-right direction. The first elastic member is disposed on the first limiting member, and the second elastic member is disposed on the second limiting member. The first speaker mounting member is slidably connected to the first limiting member in the front-back direction, and the second speaker mounting member is slidably connected to the second limiting member in the front-back direction. The first elastic member forms an elastic support engagement with the rear side of the first speaker mounting member, and the second elastic member forms an elastic support engagement with the rear side of the second speaker mounting member. The first elastic member and the second elastic member can undergo compression deformation as the first speaker mounting member and the second speaker mounting member move backward.

8. The adaptive directional sound device according to claim 7, characterized in that, The first limiting member is provided with a first guide groove, and the second limiting member is provided with a second guide groove. Both the first guide groove and the second guide groove extend in the front-back direction. The first deflection shaft is slidably connected to and rotatably engaged with the first guide groove, and the first deflection shaft can rotate around its own axis within the first guide groove. The second deflection shaft is slidably connected to and rotatably engaged with the second guide groove, and the second deflection shaft can rotate around its own axis within the second guide groove.

9. The adaptive directional sound device according to claim 8, characterized in that, The first limiting member is provided with a first positioning post, and the second limiting member is provided with a second positioning post. The first elastic member is a first torsion spring, and the second elastic member is a second torsion spring. The first torsion spring is sleeved on the first positioning post, and the second torsion spring is sleeved on the second positioning post. One end of the first torsion spring abuts against the rear side of the first deflection shaft, and one end of the second torsion spring abuts against the rear side of the second deflection shaft.

10. The adaptive directional sound device according to claim 7, characterized in that, It also includes a universal joint, with both ends of the linkage assembly connected to the first speaker mount and the second speaker mount respectively via the universal joint. The universal joint is configured to provide a degree of freedom in the forward and backward directions to accommodate the displacement of the linkage assembly when the first speaker mount and the second speaker mount move forward and backward.

11. The adaptive directional sound device according to claim 1, characterized in that, The support assembly includes a base, a first forward extension, and a second forward extension. The base is fixedly disposed, and the first and second forward extensions are fixedly disposed on the left and right sides of the base at intervals along the left-right direction. The first and second forward extensions extend forward from the base in the front-back direction, respectively. The extended ends of the first and second forward extensions form a first rotatable connection portion and a second rotatable connection portion. The rotation axes of the first and second rotatable connection portions are arranged in the vertical direction. The first audio component is rotatably connected to the first rotatable connection portion, and the second audio component is rotatably connected to the second rotatable connection portion.

12. A headrest, characterized in that, Includes the adaptive directional sound device as described in any one of claims 1-11, wherein the adaptive directional sound device is disposed inside the headrest.

13. A sofa, characterized in that, The device includes the headrest, backrest, and seat cushion as described in claim 12, wherein at least one of the headrest, backrest, and seat cushion is provided with a pressure sensing unit.

14. A method for controlling a sofa, characterized in that, The method for controlling the sofa of claim 13 includes: Real-time collection of sitting pressure data, including at least one of headrest pressure data, backrest pressure data, and seat cushion pressure data; The control drive assembly moves the linkage assembly based on the sitting pressure data to adjust the rotation angle of the first and second audio components.

15. The method according to claim 14, characterized in that, The method further includes: Determine whether the sitting pressure data is greater than or equal to a preset pressure threshold; If the sitting pressure data is greater than or equal to a preset pressure threshold, then control the first and second audio components to play. If the sitting pressure data is less than a preset pressure threshold, then the first and second audio components will stop playing.

16. The method according to claim 14, characterized in that, The step of controlling the drive component to drive the linkage assembly to move based on the sitting posture pressure data includes: The user's sitting posture is determined based on at least one of the headrest pressure data, the backrest pressure data, and the seat cushion pressure data. The drive assembly is controlled to drive the linkage assembly to move according to the seated posture.

17. The method according to claim 16, characterized in that, The sitting posture includes at least one of the following: upright sitting, reclining with backrest, and head-resting; the step of controlling the drive assembly to drive the linkage assembly to move according to the sitting posture includes: When the sitting posture is upright, the first and second audio components are controlled to extend outward to a first angle. When the sitting posture is a reclining backrest position, the first and second audio components are controlled to retract inward to a second angle. When the sitting posture is a head-leaning posture, the first and second audio components are controlled to retract inward to a third angle; wherein the first angle, the second angle, and the third angle increase sequentially.

18. The method according to claim 16, characterized in that, The step of controlling the drive assembly to drive the linkage assembly to move according to the sitting posture includes: Determine the target rotation angle based on the described sitting posture; Obtain the current rotation angles of the first and second audio components; Calculate the angle difference based on the target rotation angle and the current rotation angle; The operating direction and operating time of the drive component are controlled according to the angle difference, so as to drive the linkage component to rotate the first audio component and the second audio component to the target rotation angle.

19. A computer device, characterized in that, The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 14-19.

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