Speaker, speaker system, and speaker control method

Abstract

The invention relates to a loudspeaker, a loudspeaker system and a control method of the loudspeaker, the loudspeaker comprises a mounting sleeve, a sound production assembly, a lifting mechanism and a protective cover, at least part of the sound production assembly and the lifting mechanism is accommodated in the mounting sleeve, the lifting mechanism is connected with the sound production assembly, and the protective cover movably covers a first opening of the mounting sleeve; the lifting mechanism is suitable for driving the sounding assembly to push away the protective cover and extend out of the mounting sleeve. By arranging the lifting mechanism, the sound production assembly which produces sound from the mounting sleeve originally is lifted from the mounting sleeve through the lifting mechanism, and the sound production position of the sound production assembly is converted from the interior of the mounting sleeve to direct sound production from the interior of a vehicle, so that the sound transmission efficiency of the sound production assembly can be improved, and the sound effect of the loudspeaker is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted speakers, and in particular to a speaker, a speaker system, and a speaker control method. Background Art

[0002] Car speakers are devices installed inside a vehicle to amplify and distribute sound. They are typically used to play music, radio broadcasts, navigation instructions, and other content, ensuring that the driver and passengers can clearly hear the information or entertainment they need. Car speakers can be controlled and connected to the vehicle's audio system or other audio devices.

[0003] The speakers in a vehicle are usually installed on the vehicle body, and the tonal range can be roughly divided into high, low and mid-range. Installing the speakers in the vehicle body will make it difficult for the high and low tones to achieve the ideal effect, thereby reducing the sound quality of the speakers. Summary of the Invention

[0004] The purpose of this application is to provide a speaker, a speaker system and a speaker control method to solve the problem of poor speaker sound quality.

[0005] In a first aspect, the present application provides a loudspeaker comprising a mounting sleeve, a sound-emitting component, a lifting mechanism and a protective cover, wherein at least a portion of the sound-emitting component and the lifting mechanism are housed in the mounting sleeve, the lifting mechanism is connected to the sound-emitting component, the protective cover is movably covered on a first opening of the mounting sleeve, and the lifting mechanism is suitable for driving the sound-emitting component to push open the protective cover and extend out of the mounting sleeve.

[0006] In combination with the first aspect, in a possible implementation, at least one of the protective cover and the mounting sleeve is provided with a through hole, and the through hole communicates with the interior and the exterior of the mounting sleeve.

[0007] In combination with the first aspect, in a possible implementation, the number of the protective covers includes multiple, and one end of the multiple protective covers is arranged around the end of the mounting sleeve; the lifting mechanism is suitable for driving the sound-emitting assembly to push open the other end of the multiple protective covers and extend out of the mounting sleeve.

[0008] In combination with the first aspect, in a possible implementation, the speaker further includes a shock absorbing mechanism, which is accommodated in the mounting sleeve, and the shock absorbing mechanism is sleeved on the sound-emitting component, and the lifting mechanism drives the shock absorbing mechanism to move to drive the sound-emitting component to move.

[0009] In combination with the first aspect, in a possible implementation, the shock absorbing mechanism includes a buffer cover and a carrier, the buffer cover accommodates the carrier, the carrier is used to carry the sound-emitting component, the buffer cover is connected to the lifting mechanism, and the lifting mechanism drives the buffer cover to move to drive the sound-emitting component on the carrier to extend out of the mounting sleeve.

[0010] In combination with the first aspect, in a possible implementation, the shock absorbing mechanism further includes a shock absorbing assembly, the shock absorbing assembly is accommodated in the buffer cover, and the shock absorbing assembly connects the bearing member and the buffer cover.

[0011] In combination with the first aspect, in a possible implementation, the shock absorbing assembly includes a first elastic member and a first buffer member, the first elastic member is arranged on the side of the supporting member facing away from the sound-emitting assembly and is connected and fixed to the supporting member, the first elastic member is connected and fixed to the first buffer member, and the first buffer member is arranged between the buffer cover and the first elastic member.

[0012] In combination with the first aspect, in a possible implementation, the shock absorbing assembly further includes a first guide member, the first guide member and a side of the supporting member facing away from the sound-generating assembly, and the first buffer member is movably connected to the first guide member.

[0013] In combination with the first aspect, in a possible implementation, the shock absorbing assembly further includes a second elastic member and a second buffer member, wherein opposite ends of the second elastic member are respectively connected to the second buffer member and the buffer cover, and the second buffer member is connected to the supporting member.

[0014] In combination with the first aspect, in a possible implementation, the shock absorbing assembly also includes a second guide member and a slider, the second guide member is connected and fixed to the buffer cover, the second elastic member and the slider are both provided on the second guide member, the slider is connected to the second buffer member, and the slider pushes the second buffer member to move under the action of the second elastic member.

[0015] In combination with the first aspect, in a possible implementation, a movement direction of the second buffer is perpendicular to a movement direction of the first buffer.

[0016] In combination with the first aspect, in a possible implementation, the buffer cover includes a main body and a limiting portion, the main body forms a receiving cavity, the limiting portion is protruded from the inner wall of the main body, the limiting portion is surrounded by a second opening, the second opening is connected to the receiving cavity, the second opening is used to allow at least part of the sound-emitting component to extend out of the receiving cavity, and the supporting member is located between the limiting portion and a side of the main body facing away from the limiting portion.

[0017] In combination with the first aspect, in a possible implementation, the sound-emitting component includes a first voice coil and a second voice coil, the first voice coil is used to generate bass audio, and the second voice coil is used to generate treble audio; when the sound-emitting component is accommodated in the mounting sleeve, the first voice coil is in an energized state; when the sound-emitting component extends out of the mounting sleeve, the second voice coil is in an energized state.

[0018] In a second aspect, the present application provides a speaker system, comprising a processor and a speaker provided in any implementation of the first aspect; the processor is used to control the lifting mechanism of the speaker to drive the sound-emitting component of the speaker to push open the protective cover of the speaker and extend it out of the mounting sleeve of the speaker.

[0019] In the second aspect, in a possible implementation, when the sound-emitting component extends out of the mounting sleeve, the second voice coil of the speaker is in a powered state.

[0020] In a third aspect, the present application provides a method for controlling a speaker as provided in any implementation of the first aspect, the control method comprising: controlling the sound-emitting component to produce high-pitched audio when the lifting mechanism drives the sound-emitting component to extend out of the mounting sleeve; and controlling the sound-emitting component to produce low-pitched audio when the lifting mechanism and the sound-emitting component are both accommodated in the mounting sleeve.

[0021] In combination with the third aspect, in a possible implementation, the control method also includes: obtaining a noise signal collected by a microphone; extracting characteristic information of the noise signal, and calculating a cancellation signal corresponding to the characteristic information of the noise signal, wherein the phase of the cancellation signal is opposite to the phase of the noise signal, and the sum of the amplitude of the cancellation signal and the amplitude of the noise signal is equal to zero; controlling the cancellation signal and the noise signal to be emitted through the sound-emitting component at the same time; controlling the audio signal emitted by the sound-emitting component to be amplified and sounded, and the audio signal is generated by the sound-emitting component.

[0022] In this application, a lifting mechanism is provided to elevate the sound-generating component, which originally emitted sound from the mounting sleeve, from the mounting sleeve. This shifts the sound-generating component's sound-generating position from inside the mounting sleeve to directly inside the vehicle, thereby increasing the sound propagation efficiency of the sound-generating component and effectively enhancing the sound quality of the speaker. When the sound-generating component is required to produce bass audio, the lifting assembly can drive the sound-generating component from outside the mounting sleeve into the mounting sleeve, effectively enhancing the auditory experience of bass. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a speaker system provided in one embodiment of the present application;

[0025] Figure 2 A schematic structural diagram of a speaker provided in one embodiment of the present application;

[0026] Figure 3 for Figure 2 A schematic diagram of a portion of the structure of the loudspeaker shown;

[0027] Figure 4 for Figure 2 A schematic diagram of the structure of the sound-generating components in the loudspeaker shown;

[0028] Figure 5 for Figure 4 A schematic diagram of the exploded structure of the sound-generating component shown;

[0029] Figure 6 for Figure 2 The schematic diagram of the structure of the lifting mechanism and the protection mechanism in the loudspeaker shown;

[0030] Figure 7 for Figure 6 An enlarged schematic diagram of position VII of the loudspeaker shown;

[0031] Figure 8 for Figure 2 A schematic diagram of the structure of the connection between the sound-generating component, the lifting mechanism and the shock-absorbing mechanism in the loudspeaker shown;

[0032] Figure 9 for Figure 2 A schematic structural diagram of the shock absorbing mechanism in the loudspeaker shown;

[0033] Figure 10 for Figure 9 A schematic structural diagram of the connection between the first elastic member and the first buffer member in the shock absorbing mechanism shown;

[0034] Figure 11 for Figure 9 A schematic structural diagram of the connection between the second elastic member and the second buffer member in the shock absorbing mechanism shown;

[0035] Figure 12 A flowchart of a method for controlling a speaker provided in one embodiment of the present application;

[0036] Figure 13 This is a flowchart of a method for controlling a speaker provided in one embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100-speaker, 10-connecting bracket, 20-mounting sleeve, 21-first opening, 22-limiting ring, 30-sounding component, 31-fixing frame, 311-mounting slot, 312-first chamber, 32-magnet, 321-second chamber, 33-spring washer, 34a-first voice coil frame, 35a-first spring basin frame, 36a-first spring, 37a-first voice coil, 34b-second voice coil Skeleton, 35b-second spring frame, 36b-second spring, 37b-second voice coil, 38-dust cover, 40-protective mechanism, 41-protective cover, 411-through hole, 42-hinged seat, 43-fixed rod, 44-rotating block, 45-torsion spring, 50-lifting mechanism, 51-driving member, 52-transmission assembly, 521-transmission rod, 522-transmission gear, 53-driven assembly, 531-driven Moving gear, 532-threaded rod, 54-guide assembly, 541-sliding rod, 542-limiting block, 60-shock absorption mechanism, 61-buffer cover, 611-main body, 612-limiting part, 613-convex ring, 614-accommodating chamber, 615-second opening, 62-carrying member, 621-carrying plate, 622-contact ring, 63-shock absorption assembly, 631-first elastic member, 632-first buffer member, 633-first guide member, 634-second elastic member, 635-second buffer member, 636-second guide member, 6361-guide shell, 6362-support rod, 637-slider, 638-connecting arm, 200-microphone, 300-ANC controller, 400-filter, 500-DAC, 600-ADC, 700-processor, 800-music player, 1000-speaker system. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be an intermediate component.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used in this application includes any and all combinations of one or more of the relevant listed items.

[0042] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0043] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a speaker system 1000 provided in one embodiment of the present application. This application provides a speaker system 1000, which can be used in a vehicle. The speaker system 1000 includes the speaker 100 provided in an embodiment of the present application, a microphone 200, an active noise reduction (ANC) controller 300, a filter 400, a digital-to-analog converter (DAC) 500, an analog-to-digital converter (ADC) 600, a processor 700, and a music player 800.

[0044] The speaker 100 is a device that converts electrical signals into sounds and is an important component of an audio system.

[0045] Microphones 200 can be distributed across key noise pickup points within the vehicle to capture in-vehicle noise signals in real time. In speaker system 1000, one or more microphone arrays 200 can be deployed in various locations within the vehicle, such as the roof, near the seat headrests, and inside the doors. These microphones 200 can capture in real time noise signals from various sources and frequency bands within the vehicle. The data collected by microphones 200 is transmitted in real time to the ANC controller 300 for subsequent processing.

[0046] The ANC controller 300 uses adaptive filtering, a least mean square error (LMS) algorithm, a recursive least squares (RLS) algorithm, or other active noise reduction algorithms to calculate a cancellation signal that is opposite in phase and matches the current noise signal in amplitude. The cancellation signal must be strictly synchronized with the noise signal to ensure it is emitted through the coaxial speaker 100 before the noise reaches the passenger's ears.

[0047] Filter 400 is used to process signals and can selectively pass or suppress specific frequency components in the input signal based on specific frequency characteristics. Filter 400 can also be used to achieve functions such as signal separation, noise reduction, and frequency response adjustment. Filter 400 can also be used to distinguish between the sound and noise emitted by speaker 100. After the distinction is completed, the noise is transmitted to ADC 600. ADC 600 performs a fast Fourier transform (FFT) or other spectrum analysis technology on the pre-processed signal to extract characteristic information such as the frequency component, amplitude, and phase of the noise.

[0048] The DAC 500 is used to convert digital signals into analog signals. The ADC 600 is used to convert continuous analog signals into discrete digital signals. The processor 700 can be used to control the sound and movement of the speaker 100. The music player 800 is used to generate electrical signals.

[0049] During the control of speaker system 1000, digital signal processing (DSP) can also be used to process and analyze signals. DSP utilizes digital computing techniques to process and analyze signals. By analyzing the noise collected by microphone 200 using DAC 500, ADC 600, and DSP technology, noise generated within the vehicle can be eliminated, enhancing the noise reduction effect of speaker system 1000.

[0050] See also Figure 2 and Figure 3 , Figure 2 This is a structural diagram of a speaker 100 provided in one embodiment of the present application. Figure 3 for Figure 2 The diagram shows a partial structure of the loudspeaker 100. Specifically, the loudspeaker 100 provided in the present application includes a connecting stand 10, a mounting sleeve 20, a sound-emitting assembly 30, a protective mechanism 40, a lifting mechanism 50, and a shock-absorbing mechanism 60. The connecting stand 10 is fixedly connected to the mounting sleeve 20, and the connecting stand 10 is used to support the mounting sleeve 20. The mounting sleeve 20 accommodates at least part of the sound-emitting assembly 30 and the lifting mechanism 50. The protective mechanism 40 is arranged at one end of the mounting sleeve 20 away from the connecting stand 10. The protective mechanism 40 includes a protective cover 41, and the protective cover 41 is movable and arranged at the first opening 21 of the mounting sleeve 20. The lifting mechanism 50 is connected to the sound-emitting assembly 30, and the lifting mechanism 50 is suitable for driving the sound-emitting assembly 30 to push open the protective cover 41 and extend out of the mounting sleeve 20. The shock-absorbing mechanism 60 is sleeved on the sound-emitting assembly 30 and accommodated in the mounting sleeve 20, and is used to buffer and reduce shock for the sound-emitting assembly 30.

[0051] In this application, by providing a lifting mechanism 50, the sound-generating assembly 30, which originally emitted sound from the mounting sleeve 20, is lifted from the mounting sleeve 20 by the lifting mechanism 50, shifting the sound-generating position of the sound-generating assembly 30 from inside the mounting sleeve 20 to directly inside the vehicle. This increases the sound propagation efficiency of the sound-generating assembly 30, enhances the penetration of high-pitched sounds, and effectively improves the sound quality of the speaker 100 and the auditory experience of the passengers. When the sound-generating assembly 30 is required to produce bass audio, the lifting assembly can drive the sound-generating assembly 30 from outside the mounting sleeve 20 into the mounting sleeve 20, effectively enhancing the auditory experience of bass.

[0052] It is understandable that when the sound-generating assembly 30 is required to generate bass audio and the sound-generating assembly 30 is accommodated in the mounting sleeve 20 , the lifting mechanism 50 does not need to drive the sound-generating assembly 30 to extend out of the mounting sleeve 20 .

[0053] A limiting ring 22 is provided on the inner wall surface of the installation sleeve 20 , and the limiting ring 22 is protruded relative to the inner wall surface of the installation sleeve 20 .

[0054] See also Figure 4 and Figure 5 , Figure 4 for Figure 2 The structure diagram of the sound-generating component 30 in the loudspeaker 100 is shown. Figure 5 for Figure 4 The figure shows an exploded view of the sound-generating assembly 30. The sound-generating assembly 30 includes a fixing frame 31, a magnet 32, a spring washer 33, a first voice coil bobbin 34a, a first damper basin frame 35a, a first damper 36a, a first voice coil 37a, a second voice coil bobbin 34b, a second damper basin frame 35b, a second damper 36b, a second voice coil 37b, and a dust cover 38.

[0055] The fixing frame 31 houses the magnet 32, the first voice coil bobbin 34a, the first damper 36a, the first voice coil 37a, the second voice coil bobbin 34b, the second damper 36b, and the second voice coil 37b. The top of the magnet 32 is connected and fixed to the spring washer 33, the top surface of which is flush with the top surface of the fixing frame 31. The first damper basin frame 35a and the second damper basin frame 35b are both located on the top surface of the spring washer 33. The first damper basin frame 35a surrounds the second damper basin frame 35b. For example, the inner wall of the first damper basin frame 35a is connected and fixed to the outer wall of the second damper basin frame 35b. The side of the first damper basin frame 35a facing away from the second damper basin frame 35b is also connected and fixed to the top surface of the fixing frame 31. A dust cover 38 covers the sides of the first and second damper basin frames 35a, 35b facing away from the fixing frame 31.

[0056] It should be noted that the top surface and the bottom surface are two opposite surfaces in the arrangement direction of the dust cover 38 and the first damper basin frame 35a, wherein the top surface is the side facing the dust cover 38, and the bottom surface is the side facing away from the dust cover 38. For example, in the arrangement direction of the dust cover 38 and the first damper basin frame 35a, the top surface of the first damper basin frame 35a is the side of the first damper basin frame 35a facing the dust cover 38, and the bottom surface of the first damper basin frame 35a is the side of the first damper basin frame 35a facing away from the dust cover 38. It can be understood that the top and bottom are two opposite end portions in the arrangement direction of the dust cover 38 and the first damper basin frame 35a.

[0057] Specifically, the fixing frame 31 is formed with a mounting groove 311, which accommodates the magnet 32. The inner wall surface of the fixing frame 31 and the outer circumference of the magnet 32 form a first cavity 312. The first cavity 312 accommodates the first voice coil bobbin 34a and the first voice coil 37a. The first voice coil 37a is mounted on the outer circumference of the first voice coil bobbin 34a. The outer circumference of the first voice coil bobbin 34a is also mounted with a first damper basin 35a. The inner circumference of the first damper basin 35a is equipped with a first damper 36a. The bottom of the first damper 36a is fixedly connected to the top of the first voice coil 37a.

[0058] The magnet 32 forms a second cavity 321. The second cavity 321 accommodates the second voice coil bobbin 34b and the second voice coil 37b. The second voice coil 37b is mounted on the outer circumference of the second voice coil bobbin 34b. The top of the second voice coil 37b is fixedly connected to the bottom of the second damper 36b. The inner wall of the second damper basin frame 35b is fixedly connected to the second damper 36b. The second damper basin frame 35b is mounted on the outer circumference of the second voice coil bobbin 34b.

[0059] In the present application, the first voice coil 37a is used to generate bass audio, and the second voice coil 37b is used to generate treble audio. For example, when the frequency of sound is in the range of 200Hz to 500Hz, it is bass audio; when the frequency of sound is in the range of 2000Hz to 20000Hz, it is treble audio.

[0060] Specifically, power is supplied to the first voice coil 37a, causing it to rotate on the outer surface of the first voice coil bobbin 34a. This rotation of the first voice coil 37a on the outer surface of the first voice coil bobbin 34a drives the first damper 36a to vibrate, thereby producing bass audio. When the sound-generating assembly 30 is entirely housed within the mounting sleeve 20, the first voice coil 37a is energized.

[0061] Similarly, by supplying power to the second voice coil 37b, it rapidly rotates on the outer surface of the second voice coil bobbin 34b. This rotation causes the second damper 36b to vibrate, thereby producing high-frequency audio. When the sound-generating assembly 30 extends out of the mounting sleeve 20, the second voice coil 37b is energized. This causes the second damper 36b to simultaneously and three-dimensionally propagate vibrations through the air surrounding the passenger compartment, thereby enhancing the quality of high-frequency audio.

[0062] Please combine Figure 3 and Figure 6 , Figure 6 for Figure 2 The structure of the lifting mechanism 50 and protective mechanism 40 in the speaker 100 is schematically shown. For example, at least one of the protective cover 41 and the mounting sleeve 20 is provided with a through-hole 411, which connects the interior and exterior of the mounting sleeve 20. For example, the protective cover 41 is provided with multiple through-holes 411, which extend through opposite sides of the protective cover 41. When the sound-generating assembly 30 is housed within the mounting sleeve 20, the bass sound generated by the sound-generating assembly 30 can be transmitted outside the passenger compartment through the multiple through-holes 411.

[0063] There are multiple protective covers 41, one end of each of which is disposed around the end of the mounting sleeve 20 away from the connection stand 10. The lifting mechanism 50 is adapted to drive the sound generating assembly 30 to push the other ends of the protective covers 41 away from the mounting sleeve 20.

[0064] Please combine Figure 7 , Figure 7 for Figure 6 An enlarged schematic diagram of point VII in the loudspeaker 100 shown. For example, the protective mechanism 40 also includes a hinge seat 42, a fixed rod 43, a rotating block 44 and a torsion spring 45. The hinge seat 42 is mounted on the fixed outer peripheral surface of the mounting sleeve 20, and the fixed rod 43 is arranged on the hinge seat 42. The fixed rod 43 is sleeved with a torsion spring 45 and a rotating block 44. One end of the torsion spring 45 is connected and fixed to the fixed rod 43, and the other end of the torsion spring 45 is connected and fixed to the rotating block 44. The end of the rotating block 44 away from the fixed rod 43 is fixedly connected to the protective cover 41. The rotating block 44 can rotate relative to the fixed rod 43 under the action of the torsion spring 45, thereby driving the protective cover 41 to open and close relative to the mounting sleeve 20. Among them, the number of hinge seats 42 corresponds one to one to the number of protective covers 41.

[0065] Specifically, opposite ends of the fixing rod 43 are respectively connected and fixed to opposite ends of the hinge seat 42 , and both ends of the rotating block 44 are connected to a torsion spring 45 .

[0066] Please combine Figure 6 and Figure 8 , Figure 8 for Figure 2The schematic diagram of the structure of the speaker in which the sound-emitting component 30, the lifting mechanism 50 and the shock-absorbing mechanism 60 are connected is shown. The lifting mechanism 50 drives the shock-absorbing mechanism 60 to move to drive the sound-emitting component 30 to move. The lifting mechanism 50 includes a driving member 51, a transmission component 52, a driven component 53 and a guide component 54. The driving member 51 can be a servo motor or a cylinder, which is not specifically limited. The driving member 51 is fixed to the connecting bracket 10, and the driving member 51 is connected to the transmission component 52. The transmission component 52 is connected to the sound-emitting component 30 through the driven component 53. The driving member 51 drives the transmission component 52 to move, thereby driving the driven component 53 to drive the sound-emitting component 30 to move.

[0067] For example, the transmission assembly 52 includes a transmission rod 521 and a transmission gear 522. The transmission gear 522 is located at opposite ends of the limiting ring 22. One end of the transmission rod 521 is connected and fixed to the driving member 51, and the other end of the transmission rod 521 is connected and fixed to the transmission gear 522.

[0068] The driven assembly 53 includes a driven gear 531 and a threaded rod 532. The driven gear 531 meshes with the transmission gear 522. The threaded rod 532 is located between the driven gear 531 and the retaining ring 22. One end of the threaded rod 532 is fixedly connected to the driven gear 531. The other end of the threaded rod 532 passes through the shock absorbing mechanism 60 and is rotatably connected to the side of the retaining ring 22 facing the driven gear 531.

[0069] The guide assembly 54 includes a sliding rod 541 and a limit block 542. One end of the sliding rod 541 is connected and fixed to the limit block 542, and the other end of the sliding rod 541 passes through the shock absorbing mechanism 60 and is connected and fixed to the limit ring 22. The sliding rod 541 or the limit block 542 is used to guide and limit the sound-generating assembly 30 during the process of extending or retracting the installation sleeve 20.

[0070] For example, there are two sets of guide assemblies 54 and two sets of follower assemblies 53. The two sets of follower assemblies 53 and the two sets of guide assemblies 54 are connected to the side of the retaining ring 22 facing the transmission gear 522 in a cross-staggered manner. This helps improve the stability of the sound-generating assembly 30 during movement. It is understood that the number of guide assemblies 54 and follower assemblies 53 can also be more than two, and there is no specific limitation.

[0071] In the present application, when the sound-emitting component 30 pushes the protective cover 41 relative to the mounting sleeve 20 and extends out of the mounting sleeve 20, the driving member 51 is turned on, and the driving member 51 drives the transmission gear 522 to rotate through the transmission rod 521. When the transmission gear 522 rotates, it drives the driven gears 531 on both sides to rotate, thereby rotating the threaded rod 532. The rotation of the threaded rod 532 drives the shock absorbing mechanism 60 to push the sound-emitting component 30 to rise. During the rising process of the sound-emitting component 30, it contacts the protective cover 41. During the process of the sound-emitting component 30 pushing the protective cover 41 away, the protective cover 41 rotates outward relative to the mounting sleeve 20 on the surface of the fixed rod 43 through the rotating block 44. The protective cover 41 is in an expanded state, so that the sound-emitting component 30 can be lifted out of the mounting sleeve 20.

[0072] See also Figure 8 and Figure 9 , Figure 9 for Figure 2 The structure of the shock-absorbing mechanism 60 in the loudspeaker 100 is shown. The shock-absorbing mechanism 60 includes a cushioning cover 61 and a support member 62. The cushioning cover 61 houses the support member 62. The support member 62 is used to support the sound-emitting assembly 30. The cushioning cover 61 is connected to the lifting mechanism 50. The lifting mechanism 50 drives the cushioning cover 61 to move, thereby causing the sound-emitting assembly 30 on the support member 62 to extend or retract into the mounting sleeve 20.

[0073] The buffer cover 61 includes a main body 611, a stopper 612, and a raised ring 613. The main body 611 forms a receiving cavity 614. The stopper 612 is protruding from the inner wall of the main body 611. The stopper 612 is surrounded by a second opening 615, which is in communication with the receiving cavity 614. The second opening 615 is used to allow at least a portion of the sound-emitting assembly 30 to extend out of the receiving cavity 614. The support member 62 is located between the stopper 612 and a side of the main body 611 facing away from the stopper 612. The raised ring 613 is protruding from the outer wall of the main body 611. The raised ring 613 is used to pass through the threaded rod 532 and the guide rod, so that the lifting mechanism 50 can drive the buffer cover 61 to move through the raised ring 613, thereby driving the sound-emitting assembly 30 within the buffer cover 61, and facilitating the guide rod to guide the buffer cover 61 during movement.

[0074] By providing a buffer cover 61 around the periphery of the sound assembly 30, the possibility of the sound assembly 30 being impacted during movement can be effectively reduced, thereby protecting the sound assembly 30. In addition, the buffer cover 61 can effectively absorb the vibration generated by the sound assembly 30 itself, thereby effectively reducing the resonance between the sound assembly 30 and the vehicle body, which is beneficial to improving the sound quality of the speaker 100.

[0075] For example, the shock-absorbing mechanism 60 further includes a shock-absorbing assembly 63. The shock-absorbing assembly 63 is housed within the cushioning cover 61 and connects the support member 62 and the cushioning cover 61. The shock-absorbing assembly 63 absorbs vibrations generated by the sound-generating assembly 30, thereby further reducing resonance between the sound-generating assembly 30 and the vehicle body, and further improving the sound quality of the speaker 100.

[0076] Please combine Figure 10 , Figure 10 for Figure 9 A schematic diagram of the structure of the shock absorbing mechanism 60 is shown, showing the connection between the first elastic member 631 and the first buffer member 632. In one embodiment, the shock absorbing assembly 63 includes a first elastic member 631 and a first buffer member 632. The first elastic member 631 is disposed on a side of the support member 62 facing away from the sound generating assembly 30 and is fixedly connected to the support member 62. The end of the first elastic member 631 facing away from the support member 62 is fixedly connected to the first buffer member 632. The first buffer member 632 is disposed between the buffer cover 61 and the first elastic member 631.

[0077] For example, a ball shaft is provided at one end of the first buffer member 632 away from the first elastic member 631. The ball shaft absorbs the vibration generated by the sound-emitting assembly 30 itself, thereby reducing the resonance between the sound-emitting assembly 30 and the vehicle body. The first buffer member 632 can absorb the vibration generated by the sound-emitting assembly 30. Specifically, when the speaker 100 plays sound (such as music played by the music player 800), the vibration generated by the sound-emitting assembly 30 is transmitted to the first elastic member 631 through the support member 62, squeezing and contracting the first elastic member 631. The first elastic member 631 pushes the first buffer member 632 toward the side of the buffer cover 61, thereby reducing some of the vibration generated by the sound-emitting assembly 30 and reducing the possibility of resonance between the sound-emitting assembly 30 and the vehicle body.

[0078] Furthermore, the shock-absorbing assembly 63 includes a first guide member 633. The first guide member 633 is connected to a side of the carrier 62 facing away from the sound-emitting assembly 30. The first buffer member 632 is movably connected to the first guide member 633. The first guide member 633 accommodates the first elastic member 631 and at least a portion of the first buffer member 632. The first guide member 633 is used to guide the movement of the first elastic member 631 and the first buffer member 632, thereby reducing the possibility of the first elastic member 631 and the first buffer member 632 being offset.

[0079] Please combine Figure 11 , Figure 11 for Figure 9The diagram shows the structure of the second elastic member 634 and the second buffer member 635 connected in the shock absorbing mechanism 60. The shock absorbing assembly 63 also includes the second elastic member 634 and the second buffer member 635. The second elastic member 634 is connected to the second buffer member 635 and the buffer cover 61 at opposite ends, and the second buffer member 635 is connected to the support member 62. The second elastic member 634 pushes the support member 62 back to its original position through the second buffer member 635, facilitating the extension of the sound generating assembly 30 from the second opening 615 out of the mounting sleeve 20.

[0080] Specifically, there are multiple second elastic members 634 and multiple second buffer members 635, and the multiple second buffer members 635 are spaced apart and distributed around the circumference of the carrier 62. For example, the multiple second buffer members 635 are arranged in a circular array around the circumference of the carrier 62. The multiple second buffer members 635 simultaneously press the carrier 62, ensuring that the carrier 62 is positioned at the center of the buffer cover 61. In this way, collisions between the sounding assembly 30 and other components can be minimized during the extension of the sounding assembly 30.

[0081] The second buffer member 635 moves in a direction perpendicular to the direction of movement of the first buffer member 632. The second direction is any direction on a plane perpendicular to the first direction, specifically related to the circumferential position of the second buffer member 635 on the support member 62. The first and second buffer members 632, 635 absorb vibrations of the sound assembly 30 in different directions, thereby reducing resonance between the sound assembly 30 and the vehicle body and effectively improving the sound quality.

[0082] The carrier 62 includes a carrier plate 621 and a contact ring 622. The carrier plate 621 is used to support the acoustic assembly 30. The contact ring 622 is projecting from the side of the carrier plate 621 facing away from the acoustic assembly 30. The contact ring 622 is fixedly connected to the second buffer 635. The second buffer 635 pushes the contact ring 622, which in turn drives the carrier plate 621, thereby driving the acoustic assembly 30 on the carrier plate 621.

[0083] Furthermore, the shock absorbing assembly 63 also includes a second guide member 636 and a slider 637. The second guide member 636 is connected and fixed to the buffer cover 61. The second elastic member 634 and the slider 637 are both arranged on the second guide member 636. The slider 637 is connected to the second buffer member 635. The slider 637 pushes the second buffer member 635 to move under the action of the second elastic member 634.

[0084] The second guide member 636 includes a guide housing 6361 and a support rod 6362. The guide housing 6361 is fixedly connected to the buffer cover 61. Opposite ends of the support rod 6362 are respectively fixedly connected to the guide housing 6361. Two sliders 637 and two second elastic members 634 are sleeved on the support rod 6362. One end of one slider 637 is fixedly connected to one end of one second elastic member 634, and one end of the other slider 637 is fixedly connected to one end of the other second elastic member 634. Both second elastic members 634 are fixedly connected to the guide housing 6361.

[0085] Specifically, each slider 637 is connected and fixed to the second buffer member 635 via a connecting arm 638. The second elastic member 634 is in an elastically compressed state, exerting a force on the sliders 637, causing the two sliders 637 to approach each other, thereby pushing the second buffer member 635 to squeeze the contact ring 622 through the connecting arm 638. Because the outer circumference of the contact ring 622 is provided with multiple second buffer members 635, the multiple second buffer members 635 simultaneously squeeze the contact ring 622, causing the carrier 62 to be located at the center of the buffer cover 61.

[0086] In the present application, when the supporting member 62 slides, the contact ring 622 squeezes the second elastic member 634 through the second buffer member 635, the connecting arm 638 and the slider 637. The second elastic member 634 restores its elastic deformation and acts in the opposite direction on the slider 637, pushing the two sliders 637 closer to each other, thereby pushing the contact ring 622 to reset through the connecting arm 638 and the second buffer member 635, thereby realizing the reset of the sound-emitting component 30.

[0087] Please combine Figure 12 In the speaker system 1000 of the present application, the processor 700 can be used to control the lifting mechanism 50 to drive the sound-emitting assembly 30 to push away the protective cover 41 and extend it out of the mounting sleeve 20. Specifically, after the lifting mechanism 50 drives the sound-emitting assembly 30 to extend out of the mounting sleeve 20, the processor 700 can also control the second voice coil 37b of the sound-emitting assembly 30 to be in an energized state. Compared with the sound generated by the vehicle-mounted device inside the vehicle panel, the penetration of the high-pitched sound can be improved, thereby enhancing the auditory experience of the passengers.

[0088] The present application also provides a control method for the speaker 100, which includes steps S1201-S1202:

[0089] S1201: When the lifting mechanism 50 drives the sound-generating component 30 to extend out of the mounting sleeve 20, the sound-generating component 30 is controlled to generate high-pitched audio.

[0090] S1202 : When the sound-generating component 30 is housed in the mounting sleeve 20 , the sound-generating component 30 is controlled to generate bass audio.

[0091] Specifically, when the lifting mechanism 50 drives the sounding assembly 30 to extend out of the mounting sleeve 20, the processor 700 controls the second voice coil 37b of the sounding assembly 30 to be energized, thereby controlling the second voice coil 37b to produce high-pitched audio. When the lifting mechanism 50 and the sounding assembly 30 are both housed in the mounting sleeve 20, the processor 700 controls the first voice coil 37a of the sounding assembly 30 to be energized, thereby controlling the first voice coil 37a to produce low-pitched audio.

[0092] Please combine Figure 13 , Figure 13 This is a flow chart of a control method for a speaker 100 provided in one embodiment of the present application. The control method further includes steps S1203-S1206:

[0093] S1203: Acquire the noise signal collected by the microphone 200.

[0094] In step S1203, one or more microphone arrays 200 may be distributed at different locations within the vehicle to capture noise signals from different sources and frequency bands in real time. The noise signals collected by the microphones 200 may be transmitted in real time to the ANC controller 300 for subsequent processing.

[0095] S1204: Extract characteristic information of the noise signal and calculate a cancellation signal corresponding to the characteristic information of the noise signal. The phase of the cancellation signal is opposite to that of the noise signal, and the sum of the amplitude of the cancellation signal and the amplitude of the noise signal is equal to zero.

[0096] Optionally, before step S1204 , the received noise signal may be subjected to pre-processing operations such as filtering and anti-aliasing by the filter 400 to remove interference signals and irrelevant noise.

[0097] The filter 400 distinguishes the audio signal and the noise signal emitted by the speaker 100, and transmits the noise signal to the ADC600 after the distinction is completed. The ADC600 performs fast Fourier transform (FFT) or other spectrum analysis on the pre-processed noise signal to extract characteristic information such as frequency component, amplitude and phase of the noise signal.

[0098] After ADC600 converts the analog signal corresponding to the noise signal into a discrete digital signal, the DSP processes and analyzes the noise signal based on the extracted characteristic information. The ANC controller 300 then uses adaptive filtering, the least mean square error (LMS) algorithm, the recursive least squares (RLS) algorithm, or other active noise reduction algorithms to calculate a cancellation signal that has the opposite phase and matches the amplitude of the current noise signal.

[0099] After step S1204, the process may further include optimizing and positioning the cancellation signal. For example, by combining the pressure sensor and positioning system in the vehicle to obtain the dynamic changes of the noise source in the vehicle and the position distribution of the passengers, the emission direction and intensity of the cancellation signal can be dynamically adjusted to achieve precise directional noise reduction.

[0100] S1205: Control the cancellation signal and the noise signal to be emitted through the sound generating component 30 at the same time.

[0101] In step S1205, DAC500 converts the digital signals corresponding to the cancellation signal and the noise signal into analog signals and emits them through the sound-emitting component 30. The sound-emitting component 30 can emit high- and low-frequency composite sound waves (i.e., noise reduction frequency) on the same axis, thereby efficiently radiating the reverse sound waves required to cancel the noise signal, effectively eliminating the noise, and thus achieving the purpose of noise reduction.

[0102] S1206 : Control the audio signal emitted by the sound-emitting component 30 to be amplified and sounded, where the audio signal is generated by the sound-emitting component 30 .

[0103] For example, the electrical signal generated by the music player 800 is transmitted to the sound-emitting component 30, and the sound-emitting component 30 generates a corresponding audio signal for amplification and sound.

[0104] Among them, whether the sound-emitting component 30 emits high-pitched audio or low-pitched audio is determined according to the methods in S1201 and S1202.

[0105] Optionally, the control method may also include closed-loop feedback and adaptive adjustment. Specifically, the ANC controller 300 continuously monitors the cancellation effect and, by comparing the actual noise level captured by the microphone 200 with the target noise level, continuously adjusts the parameters of the cancellation signal, forming a closed-loop feedback loop to ensure optimal active noise reduction under different operating conditions.

[0106] The control method of the speaker 100 provided in the present application can achieve accurate perception, intelligent calculation and precise cancellation of the noise inside the vehicle, significantly improving the quality of the acoustic environment inside the vehicle during driving.

[0107] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the orientation or positional relationship described in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0108] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present application are still within the scope covered by the present application.

Claims

1. A loudspeaker, characterized in that: It includes a mounting sleeve, a sound-emitting component, a lifting mechanism and a protective cover. The sound-emitting component and at least part of the lifting mechanism are accommodated in the mounting sleeve. The lifting mechanism is connected to the sound-emitting component. The protective cover is movably covered with a first opening of the mounting sleeve. The lifting mechanism is suitable for driving the sound-emitting component to push open the protective cover and extend it out of the mounting sleeve.

2. The loudspeaker according to claim 1, wherein At least one of the protective cover and the mounting sleeve is provided with a through hole, and the through hole communicates with the interior and the exterior of the mounting sleeve.

3. The loudspeaker according to claim 2, characterized in that The number of the protective covers includes multiple, and one end of the multiple protective covers is arranged around the end of the installation sleeve; the lifting mechanism is suitable for driving the sound-generating component to push open the other ends of the multiple protective covers and extend them out of the installation sleeve.

4. The loudspeaker according to claim 1, wherein The speaker further includes a shock absorbing mechanism, which is accommodated in the mounting sleeve and sleeved on the sound-generating component. The lifting mechanism drives the shock absorbing mechanism to move so as to drive the sound-generating component to move.

5. The loudspeaker according to claim 4, characterized in that The shock absorbing mechanism includes a buffer cover and a supporting member, the buffer cover accommodates the supporting member, the supporting member is used to carry the sound-generating component, the buffer cover is connected to the lifting mechanism, and the lifting mechanism drives the buffer cover to move to drive the sound-generating component on the supporting member to extend out of the mounting sleeve.

6. The loudspeaker according to claim 5, characterized in that The shock absorbing mechanism further includes a shock absorbing component, which is accommodated in the buffer cover and connects the bearing component and the buffer cover.

7. The loudspeaker according to claim 6, characterized in that The shock absorbing component includes a first elastic member and a first buffer member. The first elastic member is arranged on a side of the supporting member facing away from the sound-generating component and is connected and fixed to the supporting member. The first elastic member is connected and fixed to the first buffer member. The first buffer member is arranged between the buffer cover and the first elastic member.

8. The loudspeaker according to claim 7, characterized in that The shock absorbing component further includes a first guide member, the first guide member and a side of the bearing member facing away from the sound generating component, and the first buffer member is movably connected to the first guide member.

9. The loudspeaker according to claim 7, characterized in that The shock absorbing assembly further includes a second elastic member and a second buffer member, wherein opposite ends of the second elastic member are respectively connected to the second buffer member and the buffer cover, and the second buffer member is connected to the bearing member.

10. The loudspeaker according to claim 9, characterized in that The shock absorbing assembly also includes a second guide member and a slider. The second guide member is connected and fixed to the buffer cover. The second elastic member and the slider are both provided on the second guide member. The slider is connected to the second buffer member. The slider pushes the second buffer member to move under the action of the second elastic member.

11. The loudspeaker according to claim 10, wherein The movement direction of the second buffer member is perpendicular to the movement direction of the first buffer member.

12. The loudspeaker according to claim 5, characterized in that The buffer cover includes a main body and a limiting portion, the main body forms a receiving cavity, the limiting portion is protruded from the inner wall of the main body, the limiting portion is surrounded by a second opening, the second opening is connected to the receiving cavity, the second opening is used to allow at least part of the sound-emitting component to extend out of the receiving cavity, and the supporting member is located between the limiting portion and a side of the main body facing away from the limiting portion.

13. The loudspeaker according to claim 1, wherein The sound-emitting component includes a first voice coil and a second voice coil, the first voice coil is used to generate bass audio, and the second voice coil is used to generate treble audio; when the sound-emitting component is accommodated in the mounting sleeve, the first voice coil is in an energized state; when the sound-emitting component extends out of the mounting sleeve, the second voice coil is in an energized state.

14. A speaker system, characterized in that: It comprises a processor and a speaker as described in any one of claims 1-13; the processor is used to control the lifting mechanism of the speaker to drive the sound-emitting component of the speaker to push open the protective cover of the speaker and extend it out of the installation sleeve of the speaker.

15. The speaker system according to claim 14, wherein When the sound-generating component extends out of the mounting sleeve, the second voice coil of the speaker is in an energized state.

16. A method for controlling a loudspeaker according to any one of claims 1 to 13, characterized in that: include: When the lifting mechanism drives the sound-generating component to extend out of the mounting sleeve, the sound-generating component is controlled to generate high-pitched audio; When the sound-generating component is accommodated in the mounting sleeve, the sound-generating component is controlled to generate bass audio.

17. The control method according to claim 16, characterized in that: The control method further includes: Obtain the noise signal collected by the microphone; Extracting characteristic information of the noise signal, and calculating a cancellation signal corresponding to the characteristic information of the noise signal, wherein a phase of the cancellation signal is opposite to a phase of the noise signal, and a sum of an amplitude of the cancellation signal and an amplitude of the noise signal is equal to zero; Controlling the cancellation signal and the noise signal to be emitted through the sound-emitting component at the same time; The audio signal emitted by the sound-emitting component is controlled to be amplified and sounded, and the audio signal is generated by the sound-emitting component.

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