Sound production assembly and intelligent glasses

Abstract

The invention discloses a sound production assembly and intelligent glasses, and relates to the technical field of intelligent glasses, the sound production assembly comprises an outer shell and two sound production bodies, a containing cavity is formed in the outer shell, a first sound outlet hole is formed in the inner wall of the containing cavity, the two sound production bodies are arranged in the containing cavity in a spaced mode, each sound production body is provided with a vibrating diaphragm, and the vibrating diaphragm is arranged in the containing cavity. The two vibrating diaphragms are arranged oppositely.

Description

Technical Field

[0001] The present invention relates to the technical field of smart glasses, and particularly to a sound generating component and a smart glass. Background Art

[0002] With the rapid development of artificial intelligence technology, smart glasses, as a new type of smart wearable device, are gradually entering people's lives. Smart glasses integrate multiple functions such as smart interaction, information display, and multimedia playback. They not only provide great convenience for users in information acquisition and processing but also show broad application prospects in multiple fields such as entertainment, office, and education.

[0003] In terms of audio, smart glasses have relatively high requirements for sound quality and audio experience. Users hope to obtain clear, natural, and immersive audio effects when using smart glasses for voice calls, listening to music, etc. However, the speakers of traditional smart glasses usually adopt a single sound generating body design, and the volume of the sound generating body is small. This design has obvious defects in sound quality performance, such as thin sound, lack of layering, and insufficient bass. Summary of the Invention

[0004] The main object of the present invention is to propose a sound generating component and a smart glass, aiming to solve the problems of thin sound, lack of layering, and insufficient bass in traditional smart glasses.

[0005] To achieve the above object, the sound generating component proposed by the present invention includes an outer housing and two sound generating bodies. An accommodation cavity is formed in the outer housing, and a first sound outlet hole is opened on the inner wall of the accommodation cavity. The two sound generating bodies are arranged in the accommodation cavity at intervals, and each sound generating body has a diaphragm, and the two diaphragms are arranged opposite to each other.

[0006] The present invention also proposes a smart glass, which includes the above-mentioned sound generating component. Brief Description of the Drawings

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0008] Figure 1 An exploded schematic diagram of an embodiment of the sound generating component provided by the present invention;

[0009] Figure 2 For Figure 1 A cross-sectional view of the sound generating component in

[0010] Figure 3 is Figure 1 The explosion schematic diagram of the sounding body and the connection frame in

[0011] Figure 4 is Figure 3 The explosion schematic diagram of the sounding body in

[0012] Figure 5 is Figure 3 Another explosion schematic diagram of the sounding body in

[0013] Explanation of the reference numerals in the drawings:

[0014] 1000, sounding component;

[0015] 1, outer housing; 11, first housing; 12, second housing; 12a, mounting groove; 1a, accommodation cavity; 1b, first sound outlet hole;

[0016] 2, sounding body; 21, diaphragm; 211, elastic folding ring; 22, mounting frame; 221, conductive member; 23, mounting plate; 231, wing plate; 23a, U-shaped groove; 24, magnetic circuit component; 241, washer; 242, magnet; 25, voice coil; 2a, second sound cavity;

[0017] 3, connection frame; 31, protrusion; 31a, slotted opening; 3a, first sound cavity; 3b, second sound outlet hole; 3c, limiting groove; 3d, pore.

[0018] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments may be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] The present invention provides a sound generating assembly 1000.

[0023] Please refer to Figures 1 to 2 , in an embodiment of the present invention, the sound generating assembly 1000 includes a housing 1 and two sound generating bodies 2. An accommodation cavity 1a is formed inside the housing 1. A first sound outlet hole 1b is formed in the inner wall of the accommodation cavity 1a. The two sound generating bodies 2 are arranged in the accommodation cavity 1a at intervals. Each sound generating body 2 has a diaphragm 21, and the two diaphragms 21 are arranged opposite to each other.

[0024] In this embodiment, an accommodation cavity 1a is formed inside the housing 1. The accommodation cavity 1a is used to accommodate the two sound generating bodies 2 and components such as a circuit and a PCBA board for supplying power to the sound generating bodies 2. To facilitate the installation of the two sound generating bodies 2 into the housing 1, optionally, the housing 1 can be assembled in multiple pieces. For example, please refer to Figure 1, the outer housing 1 includes a first housing 11 and a second housing 12. An installation groove 12a matching the outer contour of the sound emitter 2 is provided in either the first housing 11 or the second housing 12. The sound emitter 2 can be snap-fitted to the inner wall of the installation groove 12a to achieve installation and fixation. To prevent the sound emitter 2 from vibrating and colliding with the inner wall of the installation groove 12a to generate noise, an elastic shock pad can be provided in the installation groove 12a to absorb the vibration of the sound emitter 2. A first sound outlet hole 1b is formed in the inner wall of the accommodation cavity 1a. The first sound outlet hole 1b is a through hole penetrating the outer housing 1. The purpose of providing the first sound outlet hole 1b is to allow sound to be transmitted out of the accommodation cavity 1a. Considering that this sound generating assembly 1000 can be applied to devices such as smart glasses, when this sound generating assembly 1000 is applied to the temple of a smart glasses, the outer housing 1 is the temple housing. The first sound outlet hole 1b can be formed at the bottom of the temple housing and oriented towards the wearer's ear. The sound emitter 2 and the first sound outlet hole 1b can be arranged between the contact point of the human ear and the temple and the frame to prevent the human ear from blocking the first sound outlet hole 1b. It should be noted that usually the sound outlet hole is formed in the direction opposite to the diaphragm 21 so that the sound wave can directly penetrate, reducing the loss of the sound wave. In this embodiment, since the two sound emitters 2 are arranged opposite to each other, the sound waves emitted by the two sound emitters 2 are coupled between the two sound emitters 2 and then transmitted out from the gap between the two sound emitters 2. The main direction of the sound wave transmission is changed from the original direction opposite to the diaphragm 21 to the direction parallel to the surface of the diaphragm 21. Therefore, the position of the first sound outlet hole 1b can be set corresponding to the gap between the two sound emitters 2, so that the sound wave can directly pass through the first sound outlet hole 1b after being transmitted out from the gap to reduce the loss of the sound wave, and the directivity of the mid-low frequency sound wave can be enhanced by using the symmetry of the sound wave conduction path.

[0025] Two sound emitters 2 are spaced apart and arranged in the accommodation cavity 1a. Each sound emitter 2 has a diaphragm 21. The two diaphragms 21 are arranged opposite to each other, that is, the two magnetic circuit components 24 of the two sound emitters 2 are symmetric about the midline of the two diaphragms 21. A gap is formed between the two diaphragms 21, and the sound waves emitted by the diaphragms 21 are superimposed and coupled in the gap. To meet the special requirements of smart glasses and the like, the diaphragms 21 of the dual-unit speaker adopt a customized material and structure design. A new type of composite material with light weight, high rigidity and good acoustic performance is selected, such as nanofiber-reinforced polymer or special metal alloy film. This material can not only quickly respond to audio signals, reduce distortion, but also effectively reduce the weight of the speaker, ensuring wearing comfort. The diaphragms 21 of the two sound emitters 2 are arranged face to face, and the vibration directions are opposite. The sound pressure is transmitted through the air medium in the outer housing 1 to achieve energy superposition in the low frequency band and phase compensation in the mid-high frequency band.

[0026] In devices such as smart glasses, due to the small cavity of the single sound emitter 2, it is unable to effectively accommodate the vibration of low-frequency sound waves, resulting in insufficient low-frequency response. When playing music or videos, lacking the support of bass, the sound appears thin and weak, and it is unable to create a good auditory atmosphere. In complex audio scenarios, such as multi-instrument performances or multi-person conversations, the individual sound elements cannot be clearly separated, affecting the user's understanding and appreciation of the audio content. In this embodiment, the two sound emitters 2 are arranged opposite to each other to form a unique acoustic layout, which enables the sound waves to be superimposed on each other within a specific space, increasing the sound pressure. The sound pressure level of sound is directly related to the volume. The higher the sound pressure level, the louder the sound sounds. Under a fixed size, this superimposing effect can increase the sound pressure level of the speaker. That is, the sound waves generated by the vibration of the two vibrating membranes 21 form a constructive interference effect within the gap between the two vibrating membranes 21. Especially in the low-frequency band of 100 - 500 Hz, the characteristics of low-frequency sound are low frequency, long wavelength, and relatively dispersed energy. By enhancing the sound pressure through sound wave superposition, the low-frequency sound can be made more powerful and full, enabling the user to more clearly and strongly feel the low-frequency effect. The reverse vibration of the two vibrating membranes 21 superimposes the sound pressure levels, significantly enhancing the energy density of the sound field. Compared with the single vibrating membrane 21 design, the increase in the sound pressure level of the low-frequency response makes the sound more full and thick, solving the problem of the thin sound and insufficient bass caused by the use of a single sound emitter 2 in traditional devices such as smart glasses. It should be noted that in order to ensure the wearing comfort, the volume and weight of the smart glasses need to be strictly controlled. However, installing a sound emitter 2 with better performance in a limited space often increases the weight and volume of the glasses, affecting the wearing comfort. In this embodiment, the two sound emitters 2 arranged face to face have a higher sound pressure level due to sound wave superposition compared to a single sound emitter 2 with the same overall size as the two sound emitters 2. Compared with the traditional single sound emitter 2 design, a higher sound pressure level can be provided with a smaller input voltage in the low-frequency band, and a better low-frequency effect can be created more precisely. That is, without increasing the volume of the sound emitter 2, the effects of increasing the sound pressure level and optimizing the low-frequency response are achieved.

[0027] In addition, the single sound design is also difficult to accurately restore the sounds of different frequency bands at the same time, making the sound lack a sense of hierarchy. Compared with a single speaker, in this embodiment, different-phase and amplitude sound waves can be emitted by adjusting the two speaker units, and then coupled and superimposed between the two sound emitters 2, which can enrich the sound hierarchy.

[0028] Furthermore, please refer to Figures 2 to 3 , in an embodiment of the present invention, the sound generating assembly 1000 further includes a connecting frame 3. The two sound emitters 2 are respectively connected to opposite sides of the connecting frame 3, and the two sound emitters 2 and the connecting frame 3 enclose a first sound cavity 3a. A second sound outlet hole 3b corresponding to the first sound outlet hole 1b is opened on the inner wall of the first sound cavity 3a.

[0029] In this embodiment, considering that the two sound-emitting monomers are arranged in a space such as the temple, there is a gap between the two sound-emitting monomers. In such a narrow space, the sound waves emitted by the two sound-emitting monomers can be coupled and superimposed to a certain extent, but there is still a certain amount of energy loss. Therefore, in this embodiment, a connecting frame 3 is provided. The connecting frame 3 is a frame-shaped structure for connecting the two sound-emitting bodies 2. The two sound-emitting bodies 2 are respectively connected to the opposite sides of the connecting frame 3, and the two sound-emitting bodies 2 and the connecting frame 3 enclose a first sound cavity 3a. In this way, the sound waves emitted by the two sound-emitting bodies 2 are superimposed and coupled in the first sound cavity 3a, reducing the loss caused by energy dissipation, effectively utilizing the cavity resonance effect, enhancing the sound pressure level, and improving the bass effect. In addition, the sound leakage to the surrounding environment is reduced, and the privacy of devices such as smart glasses is improved.

[0030] A second sound outlet hole 3b corresponding to the first sound outlet hole 1b is formed on the inner wall of the first sound cavity 3a. That is, the first sound outlet hole 1b and the second sound outlet hole 3b are axially aligned to form a linear sound wave guiding channel, reducing the disordered reflection of sound waves in the cavity, reducing the energy attenuation of sound waves, and increasing the sound volume. Taking a smart glasses as an example, when the sound-emitting component 1000 is arranged in the temple or the frame, the first sound outlet hole 1b and the second sound outlet hole 3b can be arranged towards the human ear to improve the directivity of the emitted sound, ensure that the sound can be clearly heard, and reduce the influence of sound leakage on the surrounding environment.

[0031] Furthermore, in an embodiment of the present invention, the connecting frame 3 is an elastic structure, and the connecting frame 3 is used to achieve shock absorption between the two sound-emitting bodies 2.

[0032] In this embodiment, considering that when the connecting frame 3 is rigid, the mechanical vibrations of the two sound-emitting bodies 2 are transmitted to each other through the rigid connecting frame 3, which easily causes a sense of ear pressure and acoustic noise for the wearer. Therefore, the connecting frame 3 in this embodiment is a frame-shaped structure made of an elastic material, such as soft silicone, rubber or composite soft rubber material, etc. The elastic connecting frame 3 can absorb the vibrations of the sound-emitting body 2 and block the transmission of vibrations between the two sound-emitting bodies 2, reducing acoustic noise and improving the sound clarity and purity of the sound-emitting component 1000.

[0033] Furthermore, please refer to Figures 2 to 3 , in an embodiment of the present invention, limiting grooves 3c are respectively provided on both sides of the connecting frame 3, and each sound-emitting body 2 is clamped with the inner wall of a limiting groove 3c.

[0034] In this embodiment, during long-term use, the sound-emitting body 2 is prone to dislocation with the connection frame 3 due to long-term vibration, resulting in the detachment of the connection frame 3. Therefore, in this embodiment, limiting grooves 3c are provided on both sides of the connection frame 3. The limiting grooves 3c are arranged along the inner wall of the connection frame 3, that is, the limiting grooves 3c communicate with the first sound cavity 3a inside the connection frame 3. In this way, a stepped structure is formed on the connection frame 3, that is, the limiting grooves 3c have two mutually perpendicular inner walls, and the outer side wall of each sound-emitting body 2 is clamped with the inner wall of a limiting groove 3c. In addition to the above setting method, limiting grooves 3c communicating with the first sound cavity 3a inside the connection frame 3 can also be respectively provided on both sides of the connection frame 3, and continuous or multi-segmented ribs are provided on the outer wall of each sound-emitting body facing the limiting groove 3c. The ribs are adapted to the limiting grooves 3c and can extend into the limiting grooves 3c to be clamped with the inner walls of the limiting grooves 3c. In this way, it is possible to avoid the dislocation of the connection frame 3 and the sound-emitting body 2 or the detachment of the connection frame 3 caused by long-term vibration.

[0035] Further, please refer to Figure 2 , Figure 4 and Figure 5 , in an embodiment of the present invention, the sound-emitting body 2 further includes a mounting frame 22, a mounting plate 23, a magnetic circuit assembly 24, and a voice coil 25. The mounting frame 22 is connected to the inner wall of the accommodation cavity 1a. The diaphragm 21 is hermetically connected to one side of the mounting frame 22. The mounting plate 23 is located inside the mounting frame 22 and is connected to the inner wall of the mounting frame 22. The diaphragm 21, the mounting frame 22, and the mounting plate 23 enclose a second sound cavity 2a. The magnetic circuit assembly 24 is located inside the second sound cavity 2a and is connected to the mounting plate 23. The voice coil 25 is sleeved outside the magnetic circuit assembly 24 and is connected to the diaphragm 21.

[0036] In this embodiment, considering that in order to improve the comfort of users wearing, the accommodation space in devices such as smart glasses is usually small. In order to meet the requirements of lightweight and miniaturization of devices such as smart glasses, the sound-emitting body 2 in this embodiment uses the cooperation of the mounting frame 22 and the mounting plate 23 to replace the traditional metal basin frame structure. The mounting plate 23 is located inside the mounting frame 22 and is connected to the inner wall of the mounting frame 22 to reduce the thickness of the sound-emitting body 2. The diaphragm 21, the mounting frame 22, and the mounting plate 23 enclose a second sound cavity 2a. It should be noted that the second sound cavity is an open cavity, that is, the second sound cavity is communicated with the outside.

[0037] Specifically, a plurality of wing plates 231 are provided on the periphery of the mounting plate 23, and a plurality of protrusions 31 are provided on the inner wall of the mounting frame 22. A slot 31a is recessed on the side of each protrusion 31 facing away from the diaphragm 21. Each wing plate 231 is received in a slot 31a and connected to the inner wall of the slot 31a. Here, considering the lightweight design, adhesives, welding, or fusion bonding can be used. At this time, the mounting plate 23 is received in the mounting frame 22 or flush with the mounting frame 22, thus preventing the mounting plate 23 from protruding from the side of the mounting frame 22 facing away from the diaphragm 21 and reducing the thickness of the sound generating body 2. In addition, since a plurality of protrusions 31 are provided on the inner wall of the mounting frame 22 and the wing plates 231 protrude from the outer periphery of the mounting plate 23, a plurality of pores 3d are formed between the mounting plate 23 and the mounting frame 22. The pores 3d can prevent the air between the diaphragm 21 and the mounting plate 23 from being enclosed, helping to dissipate the air pressure generated by the vibration of the diaphragm 21, thereby reducing unnecessary air pulsation. Especially when the vibration amplitude of the diaphragm 21 is large during low-frequency vibration, setting the pores 3d can effectively dissipate the air pressure in the second sound cavity 2a and significantly improve the bass quality of the sound generating body 2. Moreover, setting the pores 3d is beneficial to reducing the mass of the sound generating body 2 and realizing the lightweight of the sound generating body 2.

[0038] The magnetic circuit assembly 24 is located in the second sound cavity 2a and connected to the mounting plate 23. The voice coil 25 is sleeved outside the magnetic circuit assembly 24 and connected to the diaphragm 21. Among them, the magnetic circuit assembly 24 includes a magnet 242 and a washer 241. The magnet 242 can use a high-energy product neodymium iron boron thin sheet to reduce the space occupation and provide more moving space for the diaphragm 21. The washer 241 covers the side of the magnet 242 facing the diaphragm 21 and is used to help maintain the uniformity of the magnetic circuit. The voice coil 25 is sleeved outside the magnetic circuit assembly 24 and connected to the diaphragm 21, and is used to drive the diaphragm 21 to vibrate. By adjusting the current in the voice coil 25, the vibration frequency and amplitude of the voice coil 25 can be controlled. The voice coil 25 skeleton can use aluminum-magnesium alloy foil, and the voice coil 25 winding can use ultra-fine aluminum enameled wire, thereby reducing the mass and volume of the voice coil 25.

[0039] In this embodiment, by receiving the mounting plate 23 in the mounting frame 22, the thickness of the sound generating body 2 is reduced, which is beneficial to the miniaturization and lightweight design of the sound generating component 1000, so as to be applied to devices such as smart glasses.

[0040] Further, in an embodiment of the present invention, a shielding layer is provided outside the voice coil 25.

[0041] In this embodiment, considering that in devices such as smart glasses, the voice coil 25 may be affected by electromagnetic interference from other electronic components or wireless signals in the air. In order to effectively isolate electromagnetic interference and reduce noise and distortion, a shielding layer is provided outside the voice coil 25 in this embodiment. The shielding layer can use a metal plating layer or a graphene coating, etc. The shielding layer forms a closed loop outside the voice coil 25, and the external alternating magnetic field is cancelled by eddy currents.

[0042] Further, please refer to Figure 2 and Figure 5 , in an embodiment of the present invention, a U-shaped groove 23a is formed on one side of the mounting plate 23 facing the second sound cavity 2a, and the magnetic circuit assembly 24 is disposed in the U-shaped groove 23a.

[0043] In this embodiment, in order to reduce the magnetic leakage of the magnetic circuit assembly 24 such as the magnet 242 and improve the magnetic circuit, a U-shaped groove 23a is formed on one side of the mounting plate 23 facing the second sound cavity 2a, and the magnetic circuit assembly 24 is disposed in the U-shaped groove 23a. The mounting plate 23 can be made of a magnetic conductive material. Optionally, the mounting plate 23 can be formed by casting with a magnetic conductive material, and the U-shaped groove 23a is formed by casting on one side of the mounting plate 23 facing the diaphragm 21. Preferably, the mounting plate 23 can be integrally formed by stamping magnetic conductive stainless steel, and a part of the mounting plate 23 is stamped and bent to form the U-shaped groove 23a. The stamping method can avoid pores 3d caused by poor casting in the small-sized mounting plate 23 and avoid affecting the uniformity of the magnetic circuit. The depth of the U-shaped groove 23a is greater than or equal to the thickness of the magnetic conductive component to ensure magnetic circuit closure and reduce the magnetic leakage rate. On the premise of ensuring the movement space of the voice coil 25, the gap between the inner wall of the U-shaped groove 23a and the magnetic circuit assembly 24 can be reduced, thereby encrypting the magnetic circuit and improving the response sensitivity of the voice coil 25.

[0044] Further, please refer to Figure 2 , Figure 3 and Figure 5 , in an embodiment of the present invention, a conductive member 221 is disposed through the mounting frame 22, one end of the conductive member 221 extends out of the outer wall of the mounting frame 22, and the other end of the conductive member 221 extends out of the inner wall of the mounting frame 22 and is connected to the voice coil 25.

[0045] In this embodiment, considering that the sound emitter 2 is miniaturized and lightened to adapt to devices such as smart glasses, the traditional power supply method of laying wires inside the sound emitter 2 has problems that the wires occupy a certain space and are prone to contact with the diaphragm 21 to interfere with the sound emission of the diaphragm 21. Therefore, in this embodiment, the conductive member 221 is hidden and disposed inside the mounting frame 22. The conductive member 221 can be a wire or a conductive sheet, etc. One end of the conductive member 221 extends out of the outer wall of the mounting frame 22 respectively for connection with an external circuit or a PCBA board, etc., and the other end of the conductive member 221 extends out of the inner wall of the mounting frame 22 and is connected to the end of the voice coil 25, thus realizing power supply for the voice coil 25. The mounting frame 22 can be produced by a casting process. During casting, the conductive member 221 is preset at a corresponding position in the mold in advance. After casting is completed, the conductive member 221 and the mounting frame 22 are demolded together. In this embodiment, the conductive member 221 is hidden and disposed inside the mounting frame 22, saving the space occupied by the conductive member 221 in the second sound cavity 2a, being beneficial to the miniaturization design of the sound emitter 2, and restricting the movement of the conductive member 221 to prevent the conductive member 221 from contacting the diaphragm 21 to interfere with the sound emission of the diaphragm 21.

[0046] Please refer to Figure 2 and Figure 4 , in an embodiment of the present invention, an elastic folding ring 211 is provided on the outer periphery of a diaphragm 21. The elastic folding ring 211 is recessed away from the other diaphragm 21, and / or the distance between the two diaphragms 21 is greater than the sum of the maximum amplitudes of the two diaphragms 21.

[0047] In this embodiment, the elastic folding ring 211 at the edge of the diaphragm 21 can adopt shapes such as semicircular, wavy or arc-shaped, and the material can be selected from highly elastic materials such as rubber (butyl / silicone), polyurethane (TPU) or foam composite materials. In order to prevent the elastic folding rings 211 of the two sound emitters 2 from contacting each other and causing interference, each elastic folding ring 211 is recessed away from the other diaphragm 21, that is, the elastic folding ring 211 is recessed into the second sound cavity 2a. By providing the elastic folding ring 211, the harmonic distortion generated by the splitting vibration can be suppressed while expanding the linear vibration stroke, that is, preventing the diaphragm 21 from directly contacting the mounting frame 22 and affecting the vibration of the diaphragm 21. For example, it is avoided that the vibration of the diaphragm 21 is uneven, that is, it is avoided that the amplitude in the middle area of the diaphragm 21 is large and the amplitude of the periphery close to the mounting frame 22 is small. In addition, in order to prevent the two diaphragms 21 from touching each other and causing interference when vibrating and emitting sound, a sufficient distance should be maintained between the two diaphragms 21. The distance between the two diaphragms 21 is greater than the sum of the maximum amplitudes of the two diaphragms 21, so that it is possible to avoid the two diaphragms 21 touching each other and generating noise.

[0048] It should be noted that, on the basis that the distance between the two diaphragms 21 is greater than the sum of the maximum amplitudes of the two diaphragms 21, the phase difference of the sound waves emitted by the two diaphragms 21 can also be further considered. It can be understood that when the two diaphragms 21 are arranged face to face, the sound wave interference follows the principle of wave superposition. That is, when the wave crest is superposed with the wave crest and the wave trough is superposed with the wave trough, the two sound waves undergo constructive interference, that is, the sound pressure level is increased. On the contrary, when the wave crest is superposed with the wave trough, the two sound waves undergo destructive interference, that is, the sound pressure level is decreased. In order to reduce the occurrence of destructive interference, the distance between the two diaphragms 21 can be controlled to be less than one-fourth of the lowest frequency in the low-frequency band. In addition, the frequency difference can be reduced by keeping the resonance frequencies of the two diaphragms 21 consistent, that is, strictly controlling the shapes and materials of the two diaphragms 21 to be the same. The vibration of the two diaphragms 21 can also be controlled by using the parallel output channels of the same power amplifier chip to avoid phase drift caused by out-of-synchronization of multiple chip clocks. The sound wave signal can also be divided into two types: low frequency and high frequency. When emitting low-frequency sound waves, the two diaphragms 21 are driven in phase to enhance the sound pressure by constructive interference; when emitting high-frequency sound waves, since high-frequency sound waves are more likely to undergo destructive interference, only a single diaphragm 21 works at this time to avoid mutual cancellation of the two high-frequency sound waves.

[0049] The present invention also provides a smart glasses, which includes the sound generating component 1000 as described in any one of the above embodiments. The specific structure of the sound generating component 1000 refers to the above embodiments. Since this smart glasses adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0050] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A sound generating component, characterized in that, The sound generating component includes: A housing body, within which a receiving cavity is formed, and a first sound outlet hole is formed in the inner wall of the receiving cavity; and Two sound generating bodies, which are spaced apart and arranged within the receiving cavity. Each sound generating body has a diaphragm, and the two diaphragms are arranged oppositely.

2. The sound generating component according to claim 1, wherein The sound generating component further includes a connecting frame. The two sound generating bodies are respectively connected to opposite sides of the connecting frame, and the two sound generating bodies and the connecting frame enclose a first sound cavity; A second sound outlet hole corresponding to the first sound outlet hole is formed in the inner wall of the first sound cavity.

3. The sound generating component according to claim 2, wherein, The connecting frame is an elastic structure, and the connecting frame is used to achieve shock absorption between the two sound generating bodies.

4. The sound generating component according to claim 2, wherein Limiting grooves are respectively arranged on two sides of the connecting frame, and each sound generating body is clamped with the inner wall of a limiting groove.

5. The sound generating component according to claim 1, wherein The sound generating body further includes a mounting frame, a mounting plate, a magnetic circuit component, and a voice coil; The mounting frame is connected to the inner wall of the receiving cavity, the diaphragm is hermetically connected to one side of the mounting frame, the mounting plate is located within the mounting frame and is connected to the inner wall of the mounting frame, and the diaphragm, the mounting frame, and the mounting plate enclose a second sound cavity; The magnetic circuit component is located within the second sound cavity and is connected to the mounting plate, and the voice coil is sleeved outside the magnetic circuit component and is connected to the diaphragm.

6. The sound generating component according to claim 5, wherein A shielding layer is wrapped outside the voice coil.

7. The sound generating component according to claim 5, wherein A U-shaped groove is formed on one side of the mounting plate facing the second sound cavity, and the magnetic circuit component is arranged within the U-shaped groove.

8. The sound generating component according to claim 5, wherein, A conductive member passes through the mounting frame. One end of the conductive member extends out of the outer wall of the mounting frame, and the other end of the conductive member extends out of the inner wall of the mounting frame and is connected to the voice coil.

9. The sound generating component according to claim 1, wherein An elastic folding ring is arranged on the outer periphery of one diaphragm, and the elastic folding ring is recessed away from the other diaphragm; And / or, the distance between the two diaphragms is greater than the sum of the maximum amplitudes of the two diaphragms.

10. An intelligent glasses, characterized in that, The smart glasses include the sound generating component according to any one of claims 1 to 9.

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