loudspeaker

Abstract

The embodiment of the specification discloses a loudspeaker, which comprises: a vibration assembly, the vibration assembly comprising a vibration element and a vibration shell, the vibration element converting an electric signal into mechanical vibration, and the vibration shell being in contact with the skin of the face of a user; and a first elastic element, the first elastic element being elastically connected with the vibration shell.

Description

[0001] Priority Information

[0002] This application claims priority to PCT application No. PCT / CN2021 / 071875, filed on January 14, 2021, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] Embodiments of the present specification relate to the technical field of audio output, in particular to a loudspeaker. BACKGROUND

[0004] The loudspeaker with the function of conducting sound through the skeleton can convert a sound signal into a mechanical vibration signal, and transmit the mechanical vibration signal to the auditory nerve of the human body through the human tissue and the skeleton, so that the wearer can hear the sound.

[0005] The present specification provides a loudspeaker, which can reduce the vibration amplitude at a specific frequency, reduce the low-frequency vibration feeling of the loudspeaker, and weaken the sound leakage of the loudspeaker when working, thereby improving the sound quality of the loudspeaker. SUMMARY

[0006] The present application aims to provide a loudspeaker, which aims to reduce the vibration amplitude of the vibration shell in contact with the face of the user during use of the loudspeaker, weaken the low-frequency vibration feeling, and reduce the sound leakage of the loudspeaker, thereby improving the sound quality.

[0007] In order to achieve the above-mentioned purpose of the application, the technical scheme provided by the present application is as follows:

[0008] A loudspeaker, comprising: a vibration assembly, the vibration assembly comprising a vibration element and a vibration shell, the vibration element converting an electrical signal into a mechanical vibration, the vibration shell being in contact with the skin of the face of a user; and a first elastic element, the first elastic element being elastically connected with the vibration shell.

[0009] In some embodiments, the loudspeaker further comprises a mass element, the mass element being connected with the vibration shell through the first elastic element, and the mass element and the first elastic element being connected to constitute a resonance assembly.

[0010] In some embodiments, the vibration shell comprises a vibration panel, the vibration panel being in contact with the skin of the face of a user, and the first elastic element being elastically connected with the vibration panel.

[0011] In some embodiments, the mass element is a groove member, the vibration element being at least partially accommodated in the groove member, and the first elastic element connecting the vibration panel and the inner wall of the groove member.

[0012] In some embodiments, the first elastic element is a vibration transmission sheet.

[0013] In some embodiments, the ratio of the mass of the mass element to the mass of the vibrating panel is in the range of 0.04-1.25.

[0014] In some embodiments, the ratio of the mass of the mass element to the mass of the vibrating panel is in the range of 0.1-0.6.

[0015] In some embodiments, the vibrating assembly generates a first resonance peak at a first frequency, and the resonance assembly generates a second resonance peak at a second frequency, and the ratio of the second frequency to the first frequency is in the range of 0.5-2.

[0016] In some embodiments, the vibrating assembly generates a first resonance peak at a first frequency, and the resonance assembly generates a second resonance peak at a second frequency, and the ratio of the second frequency to the first frequency is in the range of 0.9-1.1.

[0017] In some embodiments, the first frequency and the second frequency are both less than 500Hz.

[0018] In some embodiments, in a frequency range less than the first frequency, the vibration amplitude of the resonance assembly is greater than the vibration amplitude of the vibrating housing.

[0019] In some embodiments, the vibrating housing comprises a vibrating panel and a housing back plate oppositely arranged with the vibrating panel, the vibrating panel is in contact with the user's facial skin, and the mass element is connected to the housing back plate through the first elastic element; the first elastic element is arranged on the surface of the housing back plate, and the bonding area of the first elastic element with the housing back plate is at least greater than 10mm 2 .

[0020] In some embodiments, the first elastic element comprises at least one of silicone, plastic, glue, foam, and spring.

[0021] In some embodiments, the first elastic element is the glue.

[0022] In some embodiments, the Shore hardness of the glue is in the range of 30-50.

[0023] In some embodiments, the tensile strength of the glue is not less than 1MPa.

[0024] In some embodiments, the elongation at break of the glue is in the range of 100%-500%.

[0025] In some embodiments, the adhesive strength between the glue and the housing back plate is in the range of 8MPa-14MPa.

[0026] In some embodiments, the thickness of the glue layer formed on the surface of the back plate of the shell is in the range of 50 μm to 150 μm.

[0027] In some embodiments, the area of the glue adhered to the back plate of the shell is in the range of 1% to 98% of the area of the inner wall of the back plate of the shell.

[0028] In some embodiments, the area of the glue adhered to the back plate of the shell is in the range of 100 mm 2 to 200 mm 2 .

[0029] In some embodiments, the area of the glue adhered to the back plate of the shell is 150 mm 2 .

[0030] In some embodiments, at least one of the interior and the surface of the first elastic element has a pore.

[0031] In some embodiments, the pore is filled with a damping filler.

[0032] In some embodiments, the first elastic element is the foam.

[0033] In some embodiments, the thickness of the foam is in the range of 0.6 mm to 1.8 mm.

[0034] In some embodiments, the ratio of the mass of the mass element to the sum of the mass of the vibrating panel and the back plate of the shell is in the range of 0.04 to 1.25.

[0035] In some embodiments, the ratio of the mass of the mass element to the sum of the mass of the vibrating panel and the back plate of the shell is in the range of 0.1 to 0.6.

[0036] In some embodiments, the material used to manufacture the mass element includes at least one of plastic, metal, and composite material.

[0037] In some embodiments, the resonant assembly includes at least two groups, the first elastic element in each group of the resonant assembly is connected to the back plate of the shell, and adjacent two groups of the resonant assembly are spaced apart by a predetermined distance.

[0038] In some embodiments, the resonant assembly includes at least two groups, the first elastic element in each group of the resonant assembly is connected to the back plate of the shell, and adjacent two groups of the resonant assembly are spaced apart by a predetermined distance.

[0039] In some embodiments, the first elastic element is disposed on the inner wall of the back plate of the shell.

[0040] In some embodiments, the first elastic element comprises a diaphragm, and the mass element comprises a composite structure attached to a surface of the diaphragm.

[0041] In some embodiments, the composite structure comprises at least one of a paper pot, an aluminum sheet, or a copper sheet.

[0042] In some embodiments, the vibration housing is provided with a sound outlet hole, and the sound generated by the vibration of the resonance assembly is guided to the outside through the sound outlet hole.

[0043] In some embodiments, the sound outlet hole is provided on the back plate of the housing.

[0044] In some embodiments, the first elastic element is arranged on the outer wall of the back plate of the housing.

[0045] In some embodiments, the mass element is a groove member, the vibration housing is at least partially accommodated in the groove member, the first elastic element connects the outer wall of the vibration housing and the inner wall of the groove member, and a sound outlet channel is formed between the inner wall of the groove member and the outer wall of the vibration housing.

[0046] In some embodiments, the loudspeaker further comprises a functional element, and the mass element is connected to the functional element.

[0047] In some embodiments, the functional element comprises a battery and a printed circuit board.

[0048] In some embodiments, the vibration assembly further comprises a second elastic element, and the vibration element transmits the mechanical vibration to the vibration housing through the second elastic element.

[0049] In some embodiments, the second elastic element is a vibration transmission sheet, and the vibration transmission sheet is fixedly connected to the vibration housing. BRIEF DESCRIPTION OF DRAWINGS

[0050] The present specification will be further illustrated in the manner of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, the same reference numbers represent similar structures, wherein:

[0051] Figure 1 is a longitudinal sectional view of a loudspeaker according to some embodiments of the present specification;

[0052] Figure 2 is a longitudinal sectional view of a loudspeaker without a vibration damping assembly according to some embodiments of the present specification;

[0053] Figure 3 is a partial frequency response curve of a loudspeaker without a vibration damping assembly according to some embodiments of the present specification;

[0054] Figure 4 is a longitudinal sectional view of a loudspeaker with a vibration damping assembly according to some embodiments of the present specification;

[0055] Figure 5 is a partial frequency response curve of a loudspeaker with a vibration damping assembly according to some embodiments of the present specification;

[0056] Figure 6 is a simplified mechanical model of a loudspeaker without a vibration damping assembly according to some embodiments of the present specification;

[0057] Figure 7 is a simplified mechanical model of a loudspeaker with a vibration damping assembly according to some embodiments of the present specification;

[0058] Figure 8 is a longitudinal sectional view of a loudspeaker with a first elastic element being a diaphragm according to some embodiments of the present specification;

[0059] Figure 9 is a longitudinal sectional view of a loudspeaker with a mass element being a recessed member according to some embodiments of the present specification;

[0060] Figure 10 is a longitudinal sectional view of a loudspeaker with a vibration damping assembly according to some embodiments of the present specification;

[0061] Figure 11 is a longitudinal sectional view of a loudspeaker according to some embodiments of the present specification; Figure 10 is a longitudinal sectional view of a loudspeaker according to some embodiments of the present specification;

[0062] Figure 12 is a cross-sectional view of a loudspeaker with a vibration damping assembly disposed inside a vibrating enclosure according to some embodiments of the present specification;

[0063] Figure 13 is a sound leakage intensity plot of a loudspeaker according to some embodiments of the present specification;

[0064] Figure 14 is a sound pressure level plot of another loudspeaker according to some embodiments of the present specification;

[0065] Figure 15 is a cross-sectional view of a loudspeaker with a first elastic element having a void according to some embodiments of the present specification;

[0066] Figure 16 is a longitudinal sectional view of a loudspeaker comprising two sets of resonance assemblies according to some embodiments of the present specification;

[0067] Figure 17is a longitudinal sectional view of another loudspeaker including two sets of resonant assemblies according to some embodiments of the present specification. DETAILED DESCRIPTION

[0068] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings required to be used in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some examples or embodiments of the present specification, and those skilled in the art can also apply the present specification to other similar scenarios without creative labor on the basis of these drawings. It should be understood that these exemplary embodiments are only given to enable those skilled in the art to better understand and implement the present application, and do not limit the scope of the present application in any way. Unless the context clearly indicates otherwise or otherwise stated, the same reference numbers in the drawings represent the same structure or operation.

[0069] As shown in the present specification and claims, unless the context clearly indicates otherwise or otherwise stated, the words "one", "a", "an", and / or "the" do not specifically refer to the singular, but can also include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment". The related definitions of other terms will be given in the following description. In the following description, without loss of generality, the description of "bone conduction loudspeaker" or "bone conduction earphone" will be used when describing the bone conduction related technology in the present application. This description is only one form of bone conduction application, and for those skilled in the art, "loudspeaker" or "earphone" can also be replaced by other similar words, such as "player", "hearing aid", etc.

[0070] Some embodiments of the present specification provide a speaker with bone conduction sound function. The speaker is provided with a damping assembly which can reduce the mechanical vibration intensity generated by the speaker during operation. The mechanical vibration mentioned here can refer to the vibration generated by the vibrating shell of the speaker (for example, the vibrating panel in contact with the user's facial skin, as well as the shell side plate, shell back plate, etc. connected thereto). In some cases, the use of the damping assembly to weaken the mechanical vibration of the vibrating shell in the low frequency region can make the vibration of the vibrating shell in the low frequency band weaker, making the user wear the speaker more comfortable. In other cases, when the vibration intensity of the vibrating shell is reduced, the sound leakage caused by the vibration of the vibrating shell will also be improved, which can effectively improve the sound quality of the speaker and improve the user experience. The speaker in the present specification can refer to a speaker that transmits sound in one of the main ways of bone conduction (i.e. bone conduction). For example, when the speaker is working, the vibrating shell of the speaker will vibrate mechanically, and the vibrating shell can transmit the mechanical vibration to the user's auditory nerve in the form of bone conduction through the user's facial skin, so that the user can hear the sound. For the convenience of description, in one or more embodiments of the present specification, the speaker will be taken as an example for description. It should be noted that the way of transmitting sound through bone conduction is not the only way for the speaker of the present specification to transmit sound to the user. In some embodiments, the speaker can also transmit sound in other ways. For example, the speaker can also include an air conduction (i.e. air conduction) speaker assembly, that is, the speaker can include both a speaker assembly and an air conduction speaker assembly, and transmit sound to the user in combination with bone conduction and air conduction. Among them, the air conduction speaker assembly can transmit vibration waves to the user's auditory nerve through air conduction, so that the user can hear the sound.

[0071] Figure 1 is a structural module diagram of the speaker shown according to some embodiments of the present specification. As shown in Figure 1 , the speaker 100 can include a vibrating assembly 110, a damping assembly 120 and a fixing assembly 130.

[0072] The vibration assembly 110 can generate mechanical vibrations. The generation of mechanical vibrations is accompanied by energy conversion, and the speaker 100 can use the vibration assembly 110 to implement conversion of a signal containing sound information into mechanical vibrations. The conversion process can include coexistence and conversion of multiple different types of energy. For example, an electrical signal can be directly converted into mechanical vibrations by a transducer in the vibration assembly 110. For another example, sound information can be contained in an optical signal, and a specific transducer can implement the conversion from the optical signal to the vibration signal. Other types of energy that can coexist and be converted during the operation of the transducer include thermal energy, magnetic field energy, etc. The energy conversion method of the transducer can include moving coil, electrostatic, piezoelectric, moving iron, pneumatic, electromagnetic, etc. The vibration assembly can transmit the generated mechanical vibrations to the eardrum of the user through the skin of the face of the user in a bone conduction manner, so that the user can hear the sound.

[0073] In some embodiments, the vibration assembly 110 can include a vibration element (e.g., the vibration element 211) and a vibration housing (e.g., the vibration housing 213) connected to the vibration element. The vibration element can generate mechanical vibrations that can be transmitted to the vibration housing. The vibration housing can be in contact with the skin of the face of the user and transmit the mechanical vibrations to the auditory nerve of the user.

[0074] In some embodiments, the vibrating element (or transducing device) can include a magnetic circuit assembly. The magnetic circuit assembly can provide a magnetic field. The magnetic field can be used to convert a signal containing sound information into a mechanical vibration signal. In some embodiments, the sound information can include a video, an audio file having a specific data format, or data or a file that can be converted into sound through a specific way. The signal containing sound information can come from a storage assembly of the speaker 100 itself, or from an information generation, storage, or transmission system other than the speaker 100. The signal containing sound information can include one or more combinations of an electrical signal, an optical signal, a magnetic signal, a mechanical signal, etc. The signal containing sound information can come from one signal source or multiple signal sources. The multiple signal sources can be related or unrelated. In some embodiments, the speaker 100 can obtain the signal containing sound information through a variety of different ways, and the signal acquisition can be wired or wireless, real-time or delayed. For example, the speaker 100 can receive an electrical signal containing sound information through a wired or wireless way, or directly obtain data from a storage medium to generate a sound signal. For another example, the speaker 100 can include an assembly having a sound collection function, and convert the mechanical vibration of the sound in the environment into an electrical signal through picking up the sound in the environment, and obtain an electrical signal meeting specific requirements through an amplifier after processing. In some embodiments, the wired connection can include a metal cable, an optical cable, or a hybrid cable of metal and optical, such as one or more combinations of a coaxial cable, a communication cable, a flexible cable, a spiral cable, a non-metal sheath cable, a metal sheath cable, a multi-core cable, a twisted pair cable, a ribbon cable, a shielded cable, a telecommunication cable, a twin cable, a parallel double-core wire, a twisted pair, etc. The above-described examples are only used for convenient illustration, and the medium of the wired connection can also be other types, such as a transmission carrier of other electrical signals or optical signals, etc.

[0075] The wireless connection can include radio communication, free space optical communication, acoustic communication, electromagnetic induction, etc. The radio communication can include IEEE 802.11 series standards, IEEE 802.15 series standards (e.g., Bluetooth technology and cellular technology, etc.), first generation mobile communication technology, second generation mobile communication technology (e.g., FDMA, TDMA, SDMA, CDMA, and SSMA, etc.), general packet radio service technology, third generation mobile communication technology (e.g., CDMA2000, WCDMA, TD-SCDMA, and WiMAX, etc.), fourth generation mobile communication technology (e.g., TD-LTE and FDD-LTE, etc.), satellite communication (e.g., GPS technology, etc.), near field communication (NFC), and other technologies operating in the ISM band (e.g., 2.4 GHz, etc.); the free space optical communication can include visible light, infrared signal, etc.; the acoustic communication can include acoustic wave, ultrasonic signal, etc.; the electromagnetic induction can include near field communication technology, etc. The above-described examples are only for convenient illustration, and the medium of the wireless connection can also be other types, such as Z-wave technology, other licensed civilian radio frequency bands, and military radio frequency bands, etc. For example, as some application scenarios of the present technology, the loudspeaker 100 can obtain a signal containing sound information from other devices through Bluetooth technology.

[0076] In some embodiments, the vibration housing can constitute a closed or non-closed containing space, and the vibration element can be arranged inside the vibration housing. In some embodiments, the vibration housing can include a vibration panel and a housing side plate and a housing back plate connected with the vibration panel. For example, as shown in FIG. 21, the vibration panel 2131, the housing side plate 2132, and the housing back plate 2133 can constitute a containing space, and the vibration element 211 can be arranged in the containing space. In some embodiments, the housing side plate 2132 and the housing back plate 2133 can be independent components. The housing side plate 2132 and the housing back plate 2133 can be connected and fixed by physical connection or other connection structures. For example, the housing side plate 2132 and the housing back plate 2133 can be separately formed plate-shaped components, and then connected together by bonding. In some embodiments, the housing side plate 2132 and the housing back plate 2133 can be different parts of the same structure, i.e., there is no partitioned connection surface between them. For example, a part connected with the vibration panel 2131 can be referred to as the housing side plate 2132, and the remaining part can be referred to as the housing back plate 2133. Figure 2

[0077] ​The vibrating panel 2131 can refer to a structure that is in contact with the skin of the user's face. The vibrating panel 2131 can be connected with the vibrating element 211, and the mechanical vibration generated by the vibrating element 211 can be transmitted to the user via the vibrating panel 2131. Since the speaker of the present specification transmits sound mainly by bone conduction, the bone conduction is to transmit mechanical vibration to the user through a component (e.g., the vibrating panel 2131) that is in contact with the user's body (e.g., the skin of the user's face), and the sound is transmitted to the user's auditory nerve through the user's skin and bones to make the user hear the sound. In some embodiments, the contact area of the vibrating panel 2131 with the skin of the user's face is at least greater than a preset contact area. In some embodiments, the preset contact area can be in the range of 50 mm 2 ~ 1000 mm 2 In some embodiments, the preset contact area can be in the range of 75 mm 2 ~ 850 mm 2 In some embodiments, the preset contact area can be in the range of 100 mm 2 ~ 700 mm 2 .

[0078] In some embodiments, the vibrating housing can not constitute a containing space. In some embodiments, the vibrating housing can only include a vibrating panel that is in contact with the user's face without a housing side plate or a housing back plate. For example, in the embodiments shown in Figure 10 and Figure 11 , the vibrating housing 1013 is a plate structure, and the vibrating housing 1013 of the plate structure is directly connected with the vibrating element 1011 and is in contact with the skin of the user's face, so in this embodiment, the vibrating housing 1013 itself corresponds to the vibrating panel.

[0079] In some embodiments, the vibrating panel (e.g., the vibrating panel 2131 shown in Figure 2 ) can be in direct contact with the skin of the user's face. In some embodiments, the outer side of the vibrating panel of the speaker 100 can be wrapped with a vibration transmission layer, and the vibration transmission layer can be in contact with the skin of the user's face. The vibration system composed of the vibrating panel and the vibration transmission layer transmits the sound vibration generated thereby to the skin of the user's face through the vibration transmission layer. In some embodiments, the outer side of the vibrating panel is wrapped with a vibration transmission layer. In some embodiments, the outer side of the vibrating panel can be wrapped with multiple vibration transmission layers. In some embodiments, the vibration transmission layer can be made of one or more materials, and the material composition of different vibration transmission layers can be the same or different. In some embodiments, the multiple vibration transmission layers can be stacked on each other in the thickness direction of the vibrating panel, or can be arranged side by side in the horizontal direction of the vibrating panel, or a combination of the above two arrangements. The area of the vibration transmission layer can be set to different sizes. In some embodiments, the area of the vibration transmission layer can be no less than 1 cm2 In some embodiments, the area of the vibration transmission layer can be no less than 2 cm 2 In some embodiments, the area of the vibration transmission layer can be no less than 6 cm 2 .

[0080] In some embodiments, the vibration transmission layer can be made of a material with certain adsorption, flexibility, and chemical properties. For example, plastics (including but not limited to high molecular polyethylene, blow molding nylon, engineering plastics, etc.), rubber, and other single or composite materials that can achieve the same performance. As for the types of rubber, including but not limited to general-purpose rubber and special-purpose rubber. General-purpose rubber can include but is not limited to natural rubber, isoprene rubber, styrene-butadiene rubber, cis-butadiene rubber, chlorobutadiene rubber, etc. Special-purpose rubber can include but is not limited to nitrile rubber, silicone rubber, fluororubber, polysulfide rubber, polyurethane rubber, chlorohydrin rubber, acrylate rubber, and epoxy propane rubber, etc. Among them, styrene-butadiene rubber can include but is not limited to emulsion polymerized styrene-butadiene rubber and solution polymerized styrene-butadiene rubber. As for the composite material, it can include but is not limited to reinforcing materials such as glass fiber, carbon fiber, boron fiber, graphite fiber, fiber, graphene fiber, silicon carbide fiber, or aramid fiber, etc. It can also be a composite of other organic and / or inorganic materials, such as various types of glass steel composed of glass fiber reinforced unsaturated polyester, epoxy resin, or phenolic resin matrix. Other materials that can be used to make the vibration transmission layer include one or more combinations of silica gel, polyurethane, and polycarbonate.

[0081] In some embodiments, the vibration element can be connected to any position of the vibration housing. For example, in the embodiment shown in Figure 12 , the vibration element 1211 can be directly connected to the vibration panel 12131. For another example, in the embodiment shown in Figure 4 , the vibration element 411 can be connected to the housing side plate 4132. The mechanical vibration generated by the vibration element 411 is first transmitted to the housing side plate 4132, then to the vibration panel 4131, and finally to the user by the vibration panel 4131.

[0082] The vibration damping assembly 120 can be connected to the vibration housing (e.g., the vibration housing 413 shown in Figure 4 ) to reduce the intensity of the mechanical vibration of the vibration housing. In some embodiments, the vibration damping assembly 120 can be directly connected to the vibration panel of the vibration housing. For example, in the embodiment shown in Figure 10 , the vibration damping assembly 1020 (the first elastic element 1021 of the vibration damping assembly 1020) is connected to the vibration panel 12131. In some embodiments, the vibration damping assembly 120 can be connected to other components of the vibration housing. For example, in the embodiment shown in Figure 4In the embodiment shown, the vibration damping component 420 is connected to the housing back plate 4133 of the vibration housing 413.

[0083] In some embodiments, the vibration damping component 120 may include a first elastic element (e.g., Figure 4 The first elastic element 421 shown is described. In some embodiments, the first elastic element may have a certain damping. In some cases, when the vibrating housing vibrates, the first elastic element connected to it can absorb the mechanical energy of the vibrating housing and reduce the vibration amplitude of the vibrating housing. In some embodiments, the damping of the first elastic element may be in the range of 0.005 Ns / m to 0.5 Ns / m. In some embodiments, the damping of the first elastic element may be in the range of 0.0075 Ns / m to 0.4 Ns / m. In some embodiments, the damping of the first elastic element may be in the range of 0.01 Ns / m to 0.3 Ns / m.

[0084] In some embodiments, the vibration damping component 120 may include a first elastic element (e.g., Figure 4 The first elastic element 421 shown) and the mass element connected to the first elastic element (e.g., Figure 4 The mass element 423 shown is an example. The mass element can form a resonant assembly with the first elastic element. The mechanical energy of the vibrating shell can be transferred to the mass element through the first elastic element, causing the mass element to vibrate, thereby absorbing the mechanical energy of the vibrating shell and reducing the vibration intensity of the vibrating shell. Further details regarding the vibration damping assembly can be found in other embodiments of this specification (e.g., ...). Figure 4 The description of the embodiments shown is not repeated here.

[0085] As described in the foregoing embodiments, the entire assembly consisting of the mass element and the first elastic element is referred to as a resonant assembly. In some embodiments, the damping assembly 120 may include one or more sets of resonant assemblies. In some embodiments, the number of resonant assemblies may be one set. For example, in Figure 4 In the illustrated embodiment, the vibration damping assembly 420 includes only one set of resonant components, whose first elastic element 421 is connected to the outer wall of the housing back plate 4133 of the vibrating housing 413. In other embodiments, the number of resonant components can be at least two sets. For example, in Figure 16 In the embodiment shown, the vibration damping component 1620 may include two sets of resonant components, both of which are disposed on the inner wall of the housing back plate 16133.

[0086] In some embodiments, when multiple sets of resonant components are provided on the speaker 100, factors such as the placement of the resonant components, the connection method of each set of resonant components, and the resonant frequency of the resonant components may affect the vibration reduction effect of the vibration damping component 120.

[0087] In some embodiments, at least two groups of the resonant assemblies can be disposed inside and / or outside the vibration housing. For example, at least two groups of the resonant assemblies can be disposed inside the vibration housing. For example, in Figure 16 In the illustrated embodiment, both groups of the resonant assemblies are connected with the inner wall of the housing back plate 16133. In another example, at least two groups of the resonant assemblies can be disposed outside the vibration housing. In yet another example, at least two groups of the resonant assemblies are disposed inside and outside the vibration housing, respectively. For example, some of the resonant assemblies are disposed outside the vibration housing, and the first elastic elements thereof are connected with the outer wall of the housing back plate. The other resonant assemblies are disposed inside the vibration housing, and the first elastic elements thereof are connected with the inner wall of the housing back plate.

[0088] In some embodiments, at least two groups of the resonant assemblies can be directly connected with the inner wall or the outer wall of the vibration housing. For example, at least two groups of the resonant assemblies can be directly connected with the inner wall of the vibration housing by means of bonding, welding, integral molding, riveting, screwing, etc. For example, in Figure 16 In the illustrated embodiment, the first elastic elements (e.g., the first elastic element 1621-1 and the first elastic element 1621-2) of both groups of the resonant assemblies are directly connected with the inner wall of the housing back plate 16133. In another example, at least one group of the resonant assemblies among the at least two groups of the resonant assemblies can be connected with the other resonant assemblies without being directly connected with the inner wall of the vibration housing. For example, in Figure 17 In the illustrated embodiment, there are two groups of the resonant assemblies (including the first resonant assembly 1720-1 and the second resonant assembly 1720-2), and the first resonant assembly 1720-1 is directly connected with the inner wall of the housing back plate 17133 (the first elastic element 1721-1 thereof is connected with the inner wall of the housing back plate 17133). The first elastic element 1721-2 of the second resonant assembly 1720-2 is disposed on the first resonant assembly 1720-1 in the thickness direction of the first elastic element 1721-1 of the first resonant assembly 1720-1, and the first elastic element 1721-2 thereof is connected with the mass element 1723-1 of the first resonant assembly 1720-1.

[0089] In some embodiments, when at least two groups of the resonant assemblies are disposed on the inner wall or the outer wall of the vibration housing, the adjacent two groups of the resonant assemblies can be spaced apart by a preset distance. For example, in Figure 16In the illustrated embodiment, the vibration damping assembly 1620 includes two sets of resonant assemblies (e.g., a first resonant assembly 1620-1 and a second resonant assembly 1620-2), and the first elastic elements (e.g., the first elastic element 1621-1 and the first elastic element 1621-2) of the two sets of resonant assemblies are directly connected to the inner wall of the back plate 16133 of the shell, and the edges of the two first elastic elements are spaced apart by a preset distance. In some embodiments, the preset distance can be in the range of 0.1 mm to 70 mm. In some embodiments, the preset distance can be in the range of 0.2 mm to 60 mm. In some embodiments, the preset distance can be in the range of 0.3 mm to 50 mm. In some embodiments, the resonant assembly can include a positioning member, which can be fixedly arranged on the vibration shell to position the first elastic element, so as to accurately mount the first elastic element on the vibration shell. For example, the positioning member can be an injection-molded surrounding edge arranged on the vibration shell, and the plastic surrounding edge can position the edges of the first elastic element.

[0090] In some embodiments, at least two sets of resonant assemblies can be the same or similar. Here, the same or similar resonant assemblies can refer to the same or similar resonant frequencies, mass units, first elastic elements, etc. In other embodiments, at least two sets of resonant assemblies can also be different. For example, in the illustrated embodiment, the first elastic element and the mass unit of the first resonant assembly 1620-1 are different from those of the second resonant assembly 1620-2. Figure 16 In the illustrated embodiment, the first elastic element and the mass unit of the two sets of resonant assemblies are significantly different in size.

[0091] In some embodiments, the resonant frequencies of at least two sets of resonant assemblies can be different. In some cases, when the resonant frequencies of each set of resonant assemblies are different, each set of resonant assemblies can produce a damping effect in a frequency band around the respective resonant frequency. For example, in the illustrated embodiment, the first resonant assembly 1620-1 has a resonant frequency of about 300 Hz, and the second resonant assembly 1620-2 has a resonant frequency of about 400 Hz. The first resonant assembly 1620-1 can effectively absorb the mechanical energy of the vibration shell 413 in the frequency range of 250 Hz to 350 Hz, and the second resonant assembly 1620-2 can effectively absorb the mechanical energy of the vibration shell 413 in the frequency range of 350 Hz to 450 Hz. Figure 4 Based on the illustrated embodiment, the vibration damping assembly 420 further includes another set of resonant assemblies (also including a mass unit and a first elastic element), which has a resonant frequency of about 300 Hz, and this resonant assembly can effectively absorb the mechanical energy of the vibration shell 413 in the frequency range of 250 Hz to 350 Hz. The original resonant assembly (i.e., the resonant assembly composed of the mass unit 423 and the first elastic element 421) has a resonant frequency of a second frequency f0, and it can effectively absorb the mechanical energy of the vibration shell 413 in the low-frequency region (e.g., 100 Hz to 200 Hz). Therefore, the two sets of resonant assemblies of the vibration damping assembly 420 can absorb the mechanical energy of the vibration shell 413 in two frequency ranges, effectively expanding the frequency range of the vibration damping assembly 420 to absorb vibrations.

[0092] In other embodiments, the resonant frequencies of each set of resonant assemblies can be the same or similar. When the resonant frequencies of the resonant assemblies can be the same or similar, the damping effect in the frequency band around the respective resonant frequency can be enhanced. For example, in the illustrated embodiment, the first resonant assembly 1620-1 has a resonant frequency of about 300 Hz, and the second resonant assembly 1620-2 also has a resonant frequency of about 300 Hz. The first resonant assembly 1620-1 and the second resonant assembly 1620-2 can effectively absorb the mechanical energy of the vibration shell 413 in the frequency range of 250 Hz to 350 Hz. Figure 4Based on the embodiment shown, the vibration damping component 420 also includes another set of resonant components (including a mass element and a first elastic element). The resonant frequency of this set of resonant components is the same as or similar to that of the original resonant components (i.e., the resonant components composed of the mass element 423 and the first elastic element 421). For example, if the resonant frequency of both sets of resonant components is the second frequency f0, it is equivalent to enhancing the vibration damping effect of the vibration damping component 420 in the frequency band near the second frequency f0.

[0093] In some embodiments, the vibration assembly 110 may further include a second elastic element (e.g., Figure 2 The second elastic element 215 shown connects the vibrating element to the vibrating housing. The mechanical vibration generated by the vibrating element can be transmitted to the vibrating housing via the second elastic element, thereby causing the vibrating panel to vibrate. Further details regarding the second elastic element can be found in other embodiments of this specification (e.g., ...). Figure 2 The description of the embodiments shown is not repeated here.

[0094] The fixing component 130 provides fixed support for the vibration component 110 and the damping component 120, thereby maintaining stable contact between the speaker 100 and the user's facial skin. The fixing component 130 may include one or more fixing connectors. One or more fixing connectors may be connected and fixed to the vibration component 110 and / or the damping component 120. In some embodiments, binaural wearing can be achieved using the fixing component 130. For example, both ends of the fixing component 130 may be fixedly connected to two sets of vibration components 110 (or damping components 120), respectively. When the user wears the speaker 100, the fixing component 130 can fix the two sets of vibration components 110 (or damping components 120) near the user's left and right ears, respectively. In some embodiments, the fixing component 130 can also achieve monoaural wearing. For example, the fixing component 130 may be fixedly connected to only one set of vibration components 110 (or damping components 120). When the user wears the speaker 100, the fixing component 130 can fix the vibration component 110 (or damping component 120) near one of the user's ears. In some embodiments, the fixing component 130 may be eyeglasses. For example, any combination of one or more of sunglasses, augmented reality (VR) glasses, virtual reality (AR) glasses, helmets, and headbands is not limited herein.

[0095] The above description of the structure of the loudspeaker 100 is merely a specific example and should not be regarded as the only feasible implementation. It is obvious to those skilled in the art that, after understanding the basic principle of the loudspeaker, various modifications and changes in form and details can be made to the specific ways and steps of implementing the loudspeaker 100 without departing from the principle, but these modifications and changes are still within the scope described above. For example, the loudspeaker 100 can include one or more processors, which can execute one or more sound signal processing algorithms. The sound signal processing algorithms can modify or enhance the sound signal. For example, the sound signal can be processed for noise reduction, acoustic feedback suppression, wide dynamic range compression, automatic gain control, active environmental identification, active anti-noise, directional processing, tinnitus processing, multi-channel wide dynamic range compression, active howling suppression, volume control, or other similar or any combination of the above, and these modifications and changes are still within the scope of the claims of the present application. For another example, the loudspeaker 100 can include one or more sensors, such as temperature sensors, humidity sensors, speed sensors, displacement sensors, etc. The sensors can collect user information or environmental information.

[0096] Figure 2 is a schematic view of a longitudinal section of a loudspeaker without added damping components according to some embodiments of the present specification. As shown in Figure 2 , the loudspeaker 200 can include a vibration assembly 210 and a fixing assembly 230.

[0097] In some embodiments, the vibration assembly 210 can include a vibration element 211, a vibration housing 213, and a second elastic element 215 elastically connecting the vibration element 211 and the vibration housing 213. The vibration element 211 can convert a sound signal into a mechanical vibration signal and generate mechanical vibration therefrom. The mechanical vibration generated by the vibration element 211 can be transmitted to the vibration housing 213 connected thereto through the second elastic element 215, and the vibration housing 213 is caused to vibrate. It should be noted that when the vibration element 211 transmits the mechanical vibration to the vibration housing 213 through the second elastic element 215, the vibration frequency of the vibration housing 213 is the same as the vibration frequency of the vibration element 211.

[0098] The vibration element 211 described in the specification can refer to an element that converts a sound signal into a mechanical vibration signal, for example, a transducer. In some embodiments, the vibration element 211 can include a magnetic circuit assembly and a coil, the magnetic circuit assembly can be used to form a magnetic field, and the coil can mechanically vibrate in the magnetic field. Specifically, the coil can pass through a signal current, the coil is in the magnetic field formed by the magnetic circuit assembly, and is subjected to the action of the Ampere force to accept driving to produce mechanical vibration. At the same time, the magnetic circuit assembly is subjected to the opposite reaction force of the coil. Under the action of the Ampere force, the vibration element 211 can produce mechanical vibration. And the mechanical rotation of the vibration element 211 can be transmitted to the vibration shell 213, so that the vibration shell 213 also vibrates.

[0099] In some embodiments, the vibration shell 213 can include a vibration panel 2131, a shell side plate 2132, and a shell back plate 2133. Among them, the vibration panel 2131 can also be called a shell panel, and both can refer to the part of the vibration shell 213 that contacts the user's facial skin. The shell back plate 2133 is located on the side opposite to the vibration panel 2131, that is, the side away from the user's facial skin. In some embodiments, the vibration panel 2131 and the shell back plate 2133 are respectively arranged on the two end faces of the shell side plate 2132. The vibration panel 2131, the shell side plate 2132, and the shell back plate 2133 can form a shell-shaped structure with a certain accommodating space. The vibration element 211 can be arranged inside the shell-shaped structure.

[0100] In some embodiments, the vibration panel 2131 and the shell side plate 2132 can be directly connected. For example, the vibration panel 2131 and the shell side plate 2132 can be connected by bonding, riveting, welding, screw connection, one-piece forming, etc. In some embodiments, the vibration panel 2131 and the shell side plate 2132 can be connected by a connecting piece.

[0101] In some embodiments, the connection between the vibration panel 2131 and the shell side plate 2132 can be rigid. For example, the vibration panel 2131 and the shell side plate 2132 are connected by welding, riveting, etc., and the connection between the vibration panel 2131 and the shell side plate 2132 is rigid after connection. In some embodiments, the connection between the vibration panel 2131 and the shell side plate 2132 can be elastic. For example, the vibration panel 2131 and the shell side plate 2132 are connected by elastic members (e.g., springs, foam, glue, etc.), and the connection between the vibration panel 2131 and the shell side plate 2132 is elastic after connection. In some embodiments, the connecting member can have a certain elasticity to reduce the mechanical vibration intensity transmitted to the shell side plate and the shell back plate through the connecting member, and reduce the sound leakage caused by the vibration of the vibration shell. The elasticity of the connecting member is determined by the material, thickness, structure, etc. of the connecting member. In some embodiments, the specific connection between the vibration panel 2131 and the shell side plate 2132 can be determined according to the actual situation. For example, in the embodiment shown in FIG. 11, when the vibration element 411 is connected to the shell side plate 4132, the connection between the vibration panel 4131 and the shell side plate 4132 can be rigid. For another example, in the embodiment shown in FIG. 12, when the vibration element 1211 is connected to the vibration panel 12131, the connection between the vibration panel 12131 and the shell side plate 2132 can be elastic. Figure 4 Figure 12

[0102] For the material of the connecting member, it includes but is not limited to steel (e.g., stainless steel, carbon steel, etc.), light alloy (e.g., aluminum alloy, beryllium copper, magnesium alloy, titanium alloy, etc.), plastic (e.g., high molecular polyethylene, blow molding nylon, engineering plastic, etc.), and other single or composite materials that can achieve the same performance. For the composite material, it includes but is not limited to glass fiber, carbon fiber, boron fiber, graphite fiber, graphene fiber, silicon carbide fiber, or aramid fiber, etc. The material constituting the connecting member can also be a composite of other organic and / or inorganic materials, such as various glass steels composed of glass fiber reinforced unsaturated polyester, epoxy resin or phenolic resin matrix.

[0103] In some embodiments, the thickness of the connecting member can be not less than 0.005 mm. In some embodiments, the thickness of the connecting member can be between 0.005 mm and 3 mm. In some embodiments, the thickness of the connecting member can be between 0.01 mm and 2 mm. In some embodiments, the thickness of the connecting member can be between 0.01 mm and 1 mm. In some embodiments, the thickness of the connecting member can be between 0.02 mm and 0.5 mm.

[0104] ​​In some embodiments, the structure of the connecting member can be set as a ring shape, and the ring-shaped connecting member can form different shapes. For example, the connecting member can include at least one circular ring. In another example, the connecting member can include at least two circular rings, which can be concentric or non-concentric, and the circular rings can be connected by at least two struts radiating from the outer ring to the center of the inner ring. In some embodiments, the connecting member can include at least one elliptical ring. For example, the connecting member can include at least two elliptical rings with different radii of curvature, and the elliptical rings can be connected by struts. In some embodiments, the connecting member can include at least one square ring. In some embodiments, the structure of the connecting member can also be set as a sheet shape. For example, a hollow pattern can be provided on the sheet-shaped connecting member. In some embodiments, the area of the hollow pattern is not less than the area of the non-hollow part of the connecting member. It is worth noting that the materials, thicknesses, and structures of the connecting members described above can be combined in any way to form different connecting members. In some embodiments, the ring-shaped connecting member can have different thickness distributions. For example, the thickness of the struts can be equal to the thickness of the circular ring. For another example, the thickness of the struts can be greater than the thickness of the circular ring. For yet another example, the connecting member can include at least two circular rings connected by at least two struts radiating from the outer ring to the center of the inner ring, and the thickness of the inner ring can be greater than the thickness of the outer ring. In this embodiment, since the vibration element 211 is in contact with the shell side plate 2132, the source of mechanical vibration of the vibration panel 2131 is the mechanical energy transmitted by the shell side plate 2132. In order to ensure that the vibration panel 2131 has a large enough mechanical vibration intensity to ensure that the user's auditory nerve receives a larger volume, the vibration panel 2131 and the shell side plate 2132 can be rigidly connected.

[0105] In some embodiments, the vibration panel 2131, the shell side plate 2132, and the shell back plate 2133 can be made of the same or different materials. For example, the vibration panel 2131 and the shell side plate 2132 can be made of the same material, and the material used to make the shell back plate 2133 can be different from the first two. In some embodiments, the vibration panel 2131, the shell side plate 2132, and the shell back plate 2133 can be made of different materials, respectively.

[0106] In some embodiments, the material used to make the vibration panel 2131 includes, but is not limited to, Acrylonitrile butadiene styrene (ABS), Polystyrene (PS), High impact polystyrene (HIPS), Polypropylene (PP), Polyethylene terephthalate (PET), Polyester (PES), Polycarbonate (PC), Polyamides (PA), Polyvinylchloride (PVC), Polyurethanes (PU), Polyvinylidene chloride, Polyethylene (PE), Polymethyl methacrylate (PMMA), Poly-ether-ether-ketone (PEEK), Phenolics (PF), Urea-formaldehyde (UF), Melamine formaldehyde (MF), and any of some metals, alloys (such as aluminum alloy, chromium-molybdenum steel, scandium alloy, magnesium alloy, titanium alloy, magnesium-lithium alloy, nickel alloy, etc.), glass fiber, or carbon fiber, or a combination of any of the above. In some embodiments, the material used to make the vibration panel 2131 is any combination of glass fiber, carbon fiber, and Polycarbonate (PC), Polyamides (PA), etc. In some embodiments, the material used to make the vibration panel 2131 can be a mixture of carbon fiber and Polycarbonate (PC) in a certain ratio. In some embodiments, the material used to make the vibration panel 2131 can be a mixture of carbon fiber, glass fiber, and Polycarbonate (PC) in a certain ratio. In some embodiments, the material used to make the vibration panel 2131 can be a mixture of glass fiber and Polycarbonate (PC) in a certain ratio, or a mixture of glass fiber and Polyamides (PA) in a certain ratio.

[0107] In some embodiments, the vibrating panel 2131 needs to have a certain thickness to ensure its rigidity. In some embodiments, the thickness of the vibrating panel 2131 can be no less than 0.3 mm. In some embodiments, the thickness of the vibrating panel 2131 can be no less than 0.5 mm. In some embodiments, the thickness of the vibrating panel 2131 can be no less than 0.8 mm. In some embodiments, the thickness of the vibrating panel 2131 can be no less than 1 mm. With the increase of the thickness, the weight of the vibrating shell 213 also increases, thereby increasing the self-weight of the loudspeaker 200, resulting in the sensitivity of the loudspeaker 200 being affected. Therefore, the thickness of the vibrating panel 2131 should not be too large. In some embodiments, the thickness of the vibrating panel 2131 can be no more than 2.0 mm. In some embodiments, the thickness of the vibrating panel 2131 can be no more than 1.5 mm.

[0108] In some embodiments, the relevant parameters of the vibrating panel 2131 can also include the relative density, tensile strength, elastic modulus, Rockwell hardness, etc. of the material for making the vibrating panel 2131. In some embodiments, the relative density of the vibrating panel material can be between 1.02 and 1.50. In some embodiments, the relative density of the vibrating panel material can be between 1.14 and 1.45. In some embodiments, the relative density of the vibrating panel material can be between 1.15 and 1.20. In some embodiments, the tensile strength of the vibrating panel material can be no less than 30 MPa. In some embodiments, the tensile strength of the vibrating panel material can be between 33 MPa and 52 MPa. In some embodiments, the tensile strength of the vibrating panel material can be no less than 60 MPa. In some embodiments, the elastic modulus of the vibrating panel material can be between 1.0 GPa and 5.0 GPa. In some embodiments, the elastic modulus of the vibrating panel material can be between 1.4 GPa and 3.0 GPa. In some embodiments, the elastic modulus of the vibrating panel material can be between 1.8 GPa and 2.5 GPa. In some embodiments, the hardness (Rockwell hardness) of the vibrating panel material can be between 60 and 150. In some embodiments, the hardness of the vibrating panel material can be between 80 and 120. In some embodiments, the hardness of the vibrating panel material can be between 90 and 100. In some embodiments, considering the relative density and tensile strength of the vibrating panel material at the same time, the relative density can be between 1.02 and 1.1, and the tensile strength can be between 33 MPa and 52 MPa. In some embodiments, the relative density can be between 1.20 and 1.45, and the tensile strength can be between 56 MPa and 66 MPa.

[0109] In some embodiments, the vibration panel 2131 can be configured in different shapes. For example, the vibration panel 2131 can be configured in a square shape, a rectangular shape, an approximately rectangular shape (e.g., a structure in which the four corners of a rectangular shape are replaced with arc shapes), an elliptical shape, a circular shape, or any other arbitrary shape.

[0110] In some embodiments, the vibration panel 2131 can be composed of the same material. In some embodiments, the vibration panel 2131 can be configured by stacking two or more materials. In some embodiments, the vibration panel 2131 can be composed of a layer of a material with a large Young's modulus and a layer of a material with a small Young's modulus. The advantage of this is that the rigidity requirement of the vibration panel 2131 can be ensured while the comfort of contact with the human face can be increased and the fit of the vibration panel 2131 and the human face can be improved. In some embodiments, the material with a large Young's modulus can be any of acrylonitrile butadiene styrene (ABS), polystyrene (PS), high impact polystyrene (HIPS), polypropylene (PP), polyethylene terephthalate (PET), polyester (PES), polycarbonate (PC), polyamides (PA), polyvinyl chloride (PVC), polyurethanes (PU), polyvinylidene chloride, polyethylene (PE), polymethyl methacrylate (PMMA), poly-ether-ether-ketone (PEEK), phenolics (PF), urea-formaldehyde (UF), melamine formaldehyde (MF), and some metals, alloys (such as aluminum alloy, chromium-molybdenum steel, scandium alloy, magnesium alloy, titanium alloy, magnesium-lithium alloy, nickel alloy, etc.), glass fiber, or carbon fiber, or a combination of any of the above materials.

[0111] In some embodiments, the vibration panel 2131 can be in direct contact with the user's facial skin. In some embodiments, the contact portion of the vibration panel 2131 with the user's facial skin can be the entire area or a partial area of the vibration panel 2131. For example, the vibration panel 2131 is an arc-shaped structure, and only a partial area of the arc-shaped structure is in contact with the user's facial skin. In some embodiments, the vibration panel 2131 can be in surface contact with the user's facial skin. In some embodiments, the surface of the vibration panel 2131 in contact with the user's facial skin can be a flat surface. In some embodiments, the outer surface of the vibration panel 2131 can have some protrusions or recesses. In some embodiments, the outer surface of the vibration panel 2131 can be a curved surface with an arbitrary profile.

[0112] In some embodiments, the vibration panel 2131 can be in indirect contact with the user's facial skin. For example, the vibration panel 2131 can be provided with a vibration transmission layer as described in the foregoing embodiments, which can be interposed between the vibration panel 2131 and the user's facial skin, instead of the vibration panel 2131 being in contact with the user's facial skin.

[0113] It should be noted that since the vibration element 211 includes a magnetic circuit assembly, and the vibration element 211 is accommodated in the vibration housing 213. Therefore, when the volume (i.e., the volume of the accommodation space) of the vibration housing 213 is larger, the vibration housing 213 can accommodate a larger magnetic circuit assembly, so that the speaker 200 has a higher sensitivity. The sensitivity of the speaker 200 can be reflected by the volume of the sound generated by the speaker 200 under the input of a certain sound signal. When the same sound signal is input, the larger the volume of the sound generated by the speaker 200, the higher the sensitivity of the speaker 200. In some embodiments, the volume of the sound generated by the speaker 200 increases as the volume of the accommodation space of the vibration housing 213 increases. Therefore, the present specification also has certain requirements for the volume of the vibration housing 213. In some embodiments, in order to make the speaker 200 have a higher sensitivity (volume), the volume of the vibration housing 213 can be between 2000mm 3 ~ 6000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 2000mm 3 ~ 5000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 2800mm 3 ~ 5000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 3500mm 3 ~ 5000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 1500mm 3 ~ 3500mm3 Between. In some embodiments, the volume of the vibrating housing 213 can be between 1500 mm. 3 ~2500mm 3 between.

[0114] In some embodiments, the fixing component 230 is fixedly connected to the vibration housing 213 of the vibration component 210. The fixing component 230 is used to maintain stable contact between the speaker 200 and the user's facial skin, preventing the speaker 200 from shaking and ensuring that the vibration panel 2131 can transmit sound stably. In some embodiments, the fixing component 230 can be an arc-shaped elastic member capable of generating a force that rebounds towards the center of the arc, so as to achieve stable contact with the human skull. Taking an ear hook as an example of the fixing component 230, in... Figure 2 Based on this, the top point p of the ear hook fits well with the human head, and the top point p can be considered as the fixing point. The ear hook is fixedly connected to the side plate 2132 of the housing. The fixing method includes using adhesive bonding, or fixing the ear hook to the side plate 2132 or the back plate 2133 of the housing by means of snap-fit, welding or threaded connection. The part of the ear hook connected to the vibrating housing 213 can be made of the same, different or partially the same material as the side plate 2132 or the back plate 2133 of the housing. In some embodiments, in order to make the ear hook have low stiffness (i.e., low stiffness coefficient), the ear hook may also include plastic, silicone and / or metal materials. For example, the ear hook may include arc-shaped titanium wire. In some embodiments, the ear hook can be integrally formed with the side plate 2132 or the back plate 2133 of the housing. For further examples of the vibration assembly 210 and the vibration housing 213, please refer to PCT applications filed on January 5, 2019, with application numbers PCT / CN2019 / 070545 and PCT / CN2019 / 070548, the entire contents of which are incorporated herein by reference.

[0115] As previously described, the vibration assembly 210 also includes a second elastic element 215. The second elastic element 215 can be used to elastically connect the vibration element 211 to the vibration housing 213 (e.g., the housing side plate 2132 of the vibration housing 213), so that the mechanical vibration of the vibration element 211 can be transmitted to the housing side plate 2132 of the vibration housing 213 through the second elastic element 215, ultimately causing the vibration panel 2131 to vibrate. When the vibration panel 2131 generates mechanical vibration, it is transmitted to the auditory nerve via bone conduction through contact with the wearer's (or user's) facial skin, allowing the user to hear sound.

[0116] In some embodiments, the vibration element 211 and the second elastic element 215 can be accommodated inside the vibration housing 213, and the second elastic element 215 can connect the vibration element 211 with the inner wall of the vibration housing 213. In some embodiments, the second elastic element 215 can include a first portion and a second portion. The first portion of the second elastic element 215 can be connected with the vibration element 211 (e.g., the magnetic circuit assembly of the vibration element 211), and the second portion of the second elastic element 215 can be connected with the inner wall of the vibration housing 213.

[0117] In some embodiments, the second elastic element 215 can be a vibration transmission sheet. The first portion of the vibration transmission sheet can be connected with the vibration element 211, and the second portion of the vibration transmission sheet can be connected with the vibration housing 213. Specifically, the first portion of the vibration transmission sheet can be connected with the magnetic circuit assembly of the vibration element 211, and the second portion of the vibration transmission sheet can be connected with the inner wall of the vibration housing 213. Optionally, the vibration transmission sheet has a ring structure, and the first portion of the vibration transmission sheet is closer to the center region of the vibration transmission sheet than the second portion. For example, the first portion of the vibration transmission sheet can be located at the center region of the vibration transmission sheet, and the second portion can be located at the circumferential side of the vibration transmission sheet.

[0118] In some embodiments, the vibration transmission sheet can be an elastic member. The elasticity of the vibration transmission sheet can be determined by the material, thickness, structure, etc. of the vibration transmission sheet.

[0119] In some embodiments, the material for making the vibration transmission sheet can include, but is not limited to, plastic (e.g., but not limited to, high molecular polyethylene, blow molding nylon, engineering plastic, etc.), steel (e.g., but not limited to, stainless steel, carbon steel, etc.), light alloy (e.g., but not limited to, aluminum alloy, beryllium copper, magnesium alloy, titanium alloy, etc.), or other single or composite materials that can achieve the same performance. Among them, the composite material can include, but is not limited to, reinforcing materials such as glass fiber, carbon fiber, boron fiber, graphite fiber, graphene fiber, silicon carbide fiber, or aramid fiber, or other organic and / or inorganic material composites, such as various types of glass steel composed of glass fiber reinforced unsaturated polyester, epoxy resin or phenolic resin matrix.

[0120] In some embodiments, the vibration transmission sheet can have a certain thickness. In some embodiments, the thickness of the vibration transmission sheet can be no less than 0.005 mm. In some embodiments, the thickness of the vibration transmission sheet can be between 0.005 mm and 3 mm. In some embodiments, the thickness of the vibration transmission sheet can be between 0.01 mm and 2 mm. In some embodiments, the thickness of the vibration transmission sheet can be between 0.01 mm and 1 mm. In some embodiments, the thickness of the vibration transmission sheet can be between 0.02 mm and 0.5 mm.

[0121] In some embodiments, the elasticity of the transmission sheet can be provided by the structure of the transmission sheet. For example, the transmission sheet can be an elastic structure, and the elasticity can be provided by the structure even if the material used to make the transmission sheet has a high rigidity. In some embodiments, the structure of the transmission sheet can include, but is not limited to, a spring-like structure, a ring-like or similar structure, and the like. In some embodiments, the structure of the transmission sheet can also be set to a sheet shape. In some embodiments, the structure of the transmission sheet can also be set to a strip shape. The specific structure of the transmission sheet can be combined based on the materials, thicknesses, and structures described above to form different transmission sheets. For example, a sheet-shaped transmission sheet can have different thickness distributions, with the thickness of a first part of the transmission sheet being greater than the thickness of a second part of the transmission sheet. In some embodiments, the number of transmission sheets can be one or multiple. For example, the number of transmission sheets can be two, with the second parts of the two transmission sheets being connected to the inner walls of two housing side plates 2132 opposite each other, and the first parts of the two transmission sheets being connected to the vibration element 211.

[0122] In some embodiments, the transmission sheet can be directly connected to the vibration housing 213 and the vibration element 211. For example, the transmission sheet can be connected to the vibration element 211 and the vibration housing 213 by adhesive. In another example, the transmission sheet can also be fixed to the vibration element 211 and the vibration housing 213 by welding, clamping, riveting, threaded connection (e.g., connected by screws, bolts, rods, bolts, etc.), clamp connection, pin connection, wedge key connection, and integral molding. More examples of the transmission sheet can be referred to in the PCT applications with application numbers PCT / CN2019 / 070545 and PCT / CN2019 / 070548 filed on January 5, 2019, the contents of which are incorporated herein by reference in their entirety.

[0123] In some embodiments, the vibration assembly 210 can also include a first transmission connecting piece. The transmission sheet can be connected to the vibration element 211 through the first transmission connecting piece. In some embodiments, the first transmission connecting piece can be fixedly connected to the vibration element 211, as shown in FIG. 13A. For example, the first transmission connecting piece can be fixed to the surface of the vibration element 211. In some embodiments, the first part of the vibration element 211 can be fixedly connected to the first transmission connecting piece. In some embodiments, the transmission sheet can also be fixed to the first transmission connecting piece by welding, clamping, riveting, threaded connection (e.g., connected by screws, bolts, rods, bolts, etc.), clamp connection, pin connection, wedge key connection, and integral molding. Figure 2

[0124] ​In some embodiments, the vibration assembly 210 can further include a second vibration transmission connector, which can be fixed to an inner wall of the vibration housing 213, for example, the second vibration transmission connector can be fixed to an inner wall of the housing side plate 2132. The vibration transmission sheet can be connected to the vibration housing 213 through the second vibration transmission connector. In some embodiments, the second part of the vibration element 211 can be fixedly connected to the second vibration transmission connector. The connection manner of the second vibration transmission connector and the vibration transmission sheet can be the same as or similar to the connection manner of the first vibration transmission connector and the vibration transmission sheet in the foregoing embodiments, which will not be described here again.

[0125] Figure 3 is a partial frequency response curve diagram of a loudspeaker without adding a damping assembly according to some embodiments of the present specification. In which, the horizontal axis is the frequency, and the vertical axis is the vibration intensity (or vibration amplitude) of the loudspeaker 200. The vibration intensity mentioned here can also be understood as the vibration acceleration of the loudspeaker 200. The larger the value on the vertical axis, the greater the vibration amplitude of the loudspeaker 200, which also indicates that the vibration feeling of the loudspeaker 200 is stronger. For convenience of description, in some embodiments, the sound frequency range below 500Hz can be referred to as a low frequency region, the sound frequency range from 500Hz to 4000Hz can be referred to as a medium frequency region, and the sound frequency range greater than 4000Hz can be referred to as a high frequency region. In some embodiments, the low frequency region can bring users a more obvious vibration feeling, and if there is a very sharp peak (i.e., the vibration acceleration of some frequencies is much higher than that of other frequencies nearby) in the low frequency region, on the one hand, the sound heard by the user will be more piercing and sharp, and on the other hand, the strong vibration feeling will also bring an uncomfortable feeling. Therefore, in the low frequency region, it is not desirable to have a very sharp peak and valley, and the flatter the frequency response curve, the better the sound effect of the loudspeaker 200.

[0126] As shown in Figure 3 , the loudspeaker 200 generates a low frequency resonance peak in the low frequency region (near 100Hz). For convenience of description, it can be regarded that the loudspeaker 200 generates a first resonance peak at a first frequency. The low frequency resonance peak can be understood as being generated by the joint action of the vibration assembly 210 and the fixing assembly 230. The vibration acceleration of the low frequency resonance peak is large, which causes the vibration feeling of the vibration panel 2131 to be strong, so that when the user wears the loudspeaker 200, the face may feel pain, affecting the comfort and experience of the user.

[0127] Figure 4 is a longitudinal sectional view schematic diagram of a loudspeaker with a damping assembly according to some embodiments of the present specification. As shown in Figure 4 , the loudspeaker 400 includes a vibration assembly 410 and a damping assembly 420.

[0128] In some embodiments, the vibration assembly 410 can include a vibration element 411, a vibration housing 413, and a second elastic element 415. The vibration housing 413 can include a vibration panel 4131, a housing side plate 4132, and a housing back plate 4133. The housing side plate 4132 of the vibration housing 413 is elastically connected to the vibration element 411 through the second elastic element 415. When the vibration element 411 generates mechanical vibration, the mechanical vibration can be transmitted to the housing side plate 4132 through the second elastic element 415, and then transmitted to the vibration panel 4131 and the housing back plate 4133 through the housing side plate 4132 to cause the vibration panel 4131 and the housing back plate 4133 to vibrate. In some embodiments, the vibration element 411, the vibration housing 413, and the second elastic element 415 are the same as or similar to the vibration element 211, the vibration housing 213, and the second elastic element 215 in the loudspeaker 200, respectively, and details of the structures are not described here again.

[0129] In some embodiments, the vibration-damping assembly 420 can include a mass element 423 and a first elastic element 421, and the first elastic element 421 is fixedly connected to the mass element 423 to form a resonance assembly. The mass element 423 can be connected to the vibration housing 413 through the first elastic element 421. The vibration housing 413 can transmit mechanical vibration to the mass element 423 through the first elastic element 421 to drive the mass element 423 to generate mechanical vibration. When the mass element 423 generates mechanical vibration, the vibration acceleration, i.e., the vibration intensity, of the vibration housing 413 can be weakened, thereby reducing the vibration feeling of the vibration housing 413 and improving the user experience.

[0130] In some embodiments, the first elastic element 421 can be connected to any position of the vibration housing 413 except the vibration panel 4131. For example, the first elastic element 421 can be connected to the housing side plate 4132 or the housing back plate 4133. For example, in the example shown in FIG. 4, the first elastic element 421 can be connected to the outer wall of the housing back plate 4133. Figure 4 In the example shown in FIG. 4, the first elastic element 421 can be connected to the outer wall of the housing back plate 4133.

[0131] Figure 5 FIG. 5 is a partial frequency response curve diagram of a loudspeaker to which a vibration-damping assembly is added according to some embodiments of the present specification. In addition, Figure 5 FIG. 5 also shows the frequency response curve of the resonance assembly (composed of the first elastic element and the mass element). According to some embodiments of the present specification, Figure 5 It can be known that, under the influence of the resonance assembly, the frequency response curve of the loudspeaker 400 in the low-frequency region becomes more flat, avoiding the strong vibration feeling caused by the sharp low-frequency resonance peak, and improving the user experience.

[0132] Figure 6This is a simplified mechanical model diagram of a loudspeaker without a resonant component, according to some embodiments of this specification. For ease of understanding, when the loudspeaker does not include a resonant component (i.e., the whole consisting of a mass element and a first elastic element), the mechanical model of the loudspeaker can be equivalent to... Figure 6 The model shown is illustrated. For ease of analysis and explanation, the vibrating shell and vibrating element can be simplified to mass blocks m1 and m2, the fixing component (e.g., the ear hook) can be simplified to elastic connector k1, and the second elastic element can be simplified to elastic connector k2. The damping of elastic connector k1 and elastic connector k2 are R1 and R2, respectively. The vibrating shell and vibrating element vibrate under the action of Ampere force F and the reaction force –F, respectively. The composite vibration system consisting of the vibrating shell, vibrating element, second elastic element, and fixing component is fixed at point p at the top of the ear hook.

[0133] Figure 7 This is a simplified mechanical model schematic diagram of a loudspeaker with added resonant components, according to some embodiments of this specification. Figure 6 Similarly, for ease of understanding, when the loudspeaker includes a resonant assembly (consisting of a mass element and a first elastic element), the loudspeaker's mechanical model can be equivalent to... Figure 7 The model shown. (As shown in the image) Figure 7 As shown, m1 and m2 represent the masses of the vibrating shell and the vibrating element, respectively; m3 represents the mass of the mass element in the resonant assembly; k1 and R1 represent the elasticity and damping of the fixed assembly (e.g., the ear hook), respectively; k2 and R2 represent the elasticity and damping of the second elastic element, respectively; and k3 and R3 represent the elasticity and damping of the first elastic element. The entire composite vibration system is fixed at point p at the top of the ear hook. The vibrating shell and the vibrating element vibrate under the action of forces F and –F, respectively. When the resonant assembly is added, it is equivalent to increasing the stiffness and damping of the vibrating shell. At the same time, the Ampere force F does not change, and neither does the reaction force –F. Therefore, the addition of the resonant assembly can reduce the vibration amplitude of the vibrating shell.

[0134] In some embodiments, the vibration component 410 and the resonant component can each generate a low-frequency resonant peak at a specific frequency in the low-frequency region. By using the resonant component to absorb the mechanical vibration of the vibration housing 413, the amplitude of the mechanical vibration of the vibration housing 413 at its low-frequency resonant peak can be reduced. Figure 5As shown, the curve "speaker without resonant assembly" represents the frequency response of the speaker 400 without adding the resonant assembly. It can be seen that the vibration assembly 410 (in combination with the fixed assembly 430) can generate a first resonance peak 450 at a first frequency f. The curve "resonant assembly" represents the frequency response of the resonant assembly itself. It can be seen that the resonant assembly can generate a second resonance peak 460 at a second frequency f0. The curve "speaker with resonant assembly - resonant assembly" represents the frequency response of the speaker 400 with the resonant assembly. It can be seen that the speaker 400 with the resonant assembly has a flatter frequency response in the low frequency region (e.g., 100 Hz ~ 200 Hz) compared to the speaker without the resonant assembly (e.g., the speaker 200 as shown). The amplitude of the speaker 400 with the resonant assembly near the first frequency f (i.e., the frequency corresponding to the first resonance peak 450) is significantly lower than the amplitude of the speaker without the resonant assembly. Figure 2 As shown, the curve "speaker without resonant assembly" represents the frequency response of the speaker 400 without adding the resonant assembly. It can be seen that the vibration assembly 410 (in combination with the fixed assembly 430) can generate a first resonance peak 450 at a first frequency f. The curve "resonant assembly" represents the frequency response of the resonant assembly itself. It can be seen that the resonant assembly can generate a second resonance peak 460 at a second frequency f0. The curve "speaker with resonant assembly - resonant assembly" represents the frequency response of the speaker 400 with the resonant assembly. It can be seen that the speaker 400 with the resonant assembly has a flatter frequency response in the low frequency region (e.g., 100 Hz ~ 200 Hz) compared to the speaker without the resonant assembly (e.g., the speaker 200 as shown). The amplitude of the speaker 400 with the resonant assembly near the first frequency f (i.e., the frequency corresponding to the first resonance peak 450) is significantly lower than the amplitude of the speaker without the resonant assembly.

[0135] In some example application scenarios, the mechanical vibration generated by the vibration element 411 can be transmitted to the vibration housing 413 through the second elastic element 415, causing the vibration housing 413 to be forced to vibrate, and thus the vibration frequency of the vibration housing 413 is the same as that of the vibration element 411. Similarly, the vibration housing 413 transmits the mechanical vibration to the mass element 423 of the resonant assembly through the first elastic element 421, causing the mass element 423 to be forced to move. Thus, the vibration frequency of the mass element 423 is the same as that of the vibration housing 413. Therefore, the vibration frequency of the mass element 423 is the same as that of the vibration housing 413. Figure 5 As can be seen from the frequency response curve of the resonant assembly itself, in the range from 100 Hz to the second frequency f0 (i.e., the frequency corresponding to the second resonance peak 460), the vibration acceleration of the resonant assembly increases with the increase of the frequency. When the frequency is the second frequency f0, the second resonance peak 460 occurs. When the frequency continues to increase beyond the second frequency f0, the vibration acceleration of the resonant assembly decreases with the increase of the frequency. The frequency response curve of the resonant assembly can reflect the response of the resonant assembly to different frequencies of vibration from the outside world (i.e., the vibration of the vibration housing 413). For example, at the second frequency f0 and in the frequency range near the second frequency f0, the resonant assembly absorbs more vibration energy from the vibration housing 413. The benefit of this is that the resonant assembly mainly reduces the vibration of the vibration housing 413 in the low frequency region (e.g., the frequency corresponding to the first resonance peak 450), while having little or no effect on the vibration of the vibration housing 413 in the non-low frequency region. Ultimately, the frequency response curve of the speaker 400 is flatter and the sound quality is better.

[0136] In some embodiments, the first frequency f is the natural frequency of the vibrating component 410 (in conjunction with the fixed component 430), and the second frequency f0 is the natural frequency of the resonant component. In some embodiments, the natural frequency is related to factors such as the material, mass, elastic modulus, and shape of the structure itself.

[0137] In some embodiments, in order for the resonant component to effectively reduce the vibration intensity of the first resonance peak 450 of the vibrating housing 413, the second frequency f0 corresponding to the second resonance peak 460 of the resonant component can be set near the first frequency f corresponding to the first resonance peak 450 of the vibrating housing 413. (Reference) Figure 5 As shown, in some embodiments, the ratio of the second frequency f0 to the first frequency f is in the range of 0.5 to 2. In some embodiments, the ratio of the second frequency f0 to the first frequency f is in the range of 0.65 to 1.5. In some embodiments, the ratio of the second frequency f0 to the first frequency f is in the range of 0.75 to 1.25. In some embodiments, the ratio of the second frequency f0 to the first frequency f is in the range of 0.85 to 1.15. In some embodiments, the ratio of the second frequency f0 to the first frequency f is in the range of 0.9 to 1.1.

[0138] To broaden the frequency response range of the loudspeaker 400, the low-frequency resonant peaks (e.g., the first resonant peak 450 and the second resonant peak 460) can be controlled at lower frequencies by changing the structure and materials of the vibrating component 410 and the resonant component. In some embodiments, the first resonant peak 450 and the second resonant peak 460 can both be controlled within the low-frequency region. In some embodiments, the first frequency f and the second frequency f0 can both be less than 800 Hz. In some embodiments, the first frequency f and the second frequency f0 can both be less than 700 Hz. In some embodiments, the first frequency f and the second frequency f0 can both be less than 600 Hz. In some embodiments, the first frequency f and the second frequency f0 can both be less than 500 Hz.

[0139] In some embodiments, by controlling the structure and material of the resonant assembly (e.g., controlling the mass of the mass element 423, the elastic coefficient of the first elastic element 421, etc.), the resonant assembly can generate a larger amplitude of vibration than the vibrating housing 413 when the vibrating housing 413 transmits the vibration to the resonant assembly. For example, in at least part of the frequency range smaller (or larger) than the first frequency f, the amplitude of vibration of the resonant assembly can be larger than the amplitude of vibration of the vibrating housing 413. In some embodiments, the fixed assembly 430 can be connected to the vibrating housing 413, and since the resonant assembly is not in direct contact with the user, the large amplitude of vibration of the resonant assembly does not cause the user to feel uncomfortable vibration. In some embodiments, since the resonant assembly has a large amplitude of vibration, the mass element 423 in the resonant assembly can be designed as a structure with a large area, and the vibration of the mass element 423 with a large area can drive the air to vibrate, thereby generating air-conducted sound to enhance the low-frequency response of the speaker 400. For example, the mass element 423 can be provided as a plate-shaped member (e.g., a circular plate, a square plate, etc.), which can drive the air to vibrate when vibrating, thereby generating air-conducted sound.

[0140] Referring to Figure 5 In some embodiments, under the interaction of the vibrating housing 413 and the resonant assembly, the speaker 400 can generate a trough 472 in the low-frequency region (approximately 150 Hz-200 Hz), and the vibration acceleration of the trough 472 is smaller than the vibration acceleration of the first resonance peak 450. Moreover, due to the formation of the trough 472, the peak value of the vibration acceleration of the speaker 400 is also reduced, and Figure 5 It can be seen that the speaker 400 has two vibration acceleration peaks, both of which are smaller than the vibration acceleration of the first resonance peak 450. The above indicates that the speaker 400 with the added resonant assembly has not only a trough with a lower vibration acceleration, but also a smaller peak value of vibration acceleration, which means that the vibrating feeling of the vibrating housing 413 in the low-frequency region is weaker, which makes the user experience better when wearing the speaker 400. Figure 2

[0141] In some embodiments, the speaker 400 can generate a trough in a frequency range smaller than 450 Hz. In some embodiments, the speaker 400 can generate a trough in a frequency range smaller than 400 Hz. In some embodiments, the speaker 400 can generate a trough in a frequency range smaller than 350 Hz. In some embodiments, the speaker 400 can generate a trough in a frequency range smaller than 300 Hz. In some embodiments, the speaker 400 can generate a trough in a frequency range smaller than 200 Hz.

[0142] ​In some example application scenarios, since the mass of the resonant assembly mainly relies on the mass element 423, when the mass m3 of the mass element 423 is very small such that the ratio of the mass m3 of the mass element 423 to the mass ml of the vibrating enclosure 413 is too small, the resonant assembly has little effect on the amplitude of the mechanical vibration of the vibrating enclosure 413, resulting in that the vibration acceleration of the first resonance peak 450 of the vibrating enclosure 413 is still large and the vibration feeling of the loudspeaker 400 cannot be effectively reduced.

[0143] In some other example application scenarios, when the mass m3 of the mass element 423 is very large such that the ratio of the mass m3 of the mass element 423 to the mass ml of the vibrating enclosure 413 is too large, the resonant assembly has too much effect on the amplitude of the mechanical vibration of the loudspeaker 400, which can significantly change the frequency response of the loudspeaker 400. Therefore, the mass m3 of the mass element 423 of the resonant assembly needs to be controlled within a certain range.

[0144] In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.04-1.25. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.05-1.2. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.06-1.1. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.07-1.05. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.08-0.9. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.09-0.75. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant assembly to the mass ml of the vibrating enclosure 413 can be within the range of 0.1-0.6.

[0145] In some embodiments, the material for making the mass element 423 can include but is not limited to plastic, metal, composite material, etc. In some embodiments, the mass element 423 can be a separate structure. In some embodiments, the mass element 423 can be combined with other components of the loudspeaker 400 as a composite structure. For example, in some embodiments, the mass element 423 can be combined with the vibrating enclosure 413 as a composite structure. Figure 8In the illustrated embodiment, the first elastic element 821 is a diaphragm, and the mass element 823 can be arranged as a composite structure on the surface of the diaphragm to form a composite diaphragm structure. In the composite diaphragm structure, the mass element 823 can include at least one of a paper cone, an aluminum sheet, a copper sheet, or the like. In some embodiments, the speaker 400 can further include a functional element, and the mass element 823 can be combined as a composite structure with the functional element. In other embodiments, the mass element 823 itself can be the functional element. The functional element referred to herein can refer to a component for implementing one or more specific functions of the speaker 400. Exemplary functional elements can include at least one of a battery, a printed circuit board, a communication component, or the like.

[0146] In some embodiments, the mass element 823 can be one or a combination of a plate-shaped structure, a block-shaped structure, a spherical structure, a columnar structure, a conical structure, a strip-shaped structure, or any other possible structure. For example, the mass element 823 can be a circular plate-shaped structure. In another example, as shown in FIG. 8B, the mass element 823 can be a groove member, which can be a square groove (the cross-sectional shape of the groove is square) or a circular groove (the cross-sectional shape of the groove is circular). Based on the foregoing, the specific shape and structure of the mass element can be designed according to actual needs. Figure 9

[0147] Figure 8 FIG. 9 is a longitudinal sectional view of a speaker according to some embodiments of the present disclosure, in which a first elastic element is a diaphragm. As shown in FIG. 9, the speaker 900 can include a vibration assembly 910 and a vibration reduction assembly 920. The vibration assembly 910 can generate mechanical vibrations, and the vibration assembly 910 can be in contact with the user's facial skin to transmit the mechanical vibrations to the user's auditory nerves in a bone conduction manner through the user's facial skin. The vibration reduction assembly 920 can reduce the vibration sensation brought to the user when the vibration assembly vibrates. Figure 8

[0148] In some embodiments, the vibration assembly 910 can include a vibration element 911, a vibration housing 913, and a second elastic element 915. The vibration element 911 can generate mechanical vibrations according to an electrical signal. The vibration element 911 can be elastically connected to the vibration housing 913 through the second elastic element 915. When the vibration element 911 generates mechanical vibrations, the mechanical vibrations can be transmitted to the vibration housing 913 via the second elastic element 915 to drive the vibration housing 913 to generate mechanical vibrations, thereby transmitting vibrations to the user's facial skin and enabling the user to hear sounds in a bone conduction manner through the user's facial skin.

[0149] ​​In some embodiments, the vibrating housing 813 may include a vibrating panel 8131, a housing side plate 8132, and a housing back plate 8133. In some embodiments, the vibrating element 811, the vibrating panel 8131, and the second elastic element 815 are the same as or similar to the vibrating element 211, the vibrating panel 2131, and the second elastic element 215 in the speaker 200, and the details of their structure will not be described here.

[0150] In some embodiments, the vibration damping assembly 820 may include a resonant assembly composed of a first elastic element 821 and a mass element 823. The mass element 823 may be elastically connected to the vibrating housing 813 (the housing side plate 8132 of the vibrating housing 813) via the first elastic element 821. The vibrating housing 813 transmits vibration to the mass element 823 via the first elastic element 821, such that the mechanical vibration of the vibrating housing 813 is partially absorbed by the mass element 823, thereby reducing the vibration amplitude of the vibrating housing 813.

[0151] like Figure 8 As shown, the vibration damping component 820 can be housed within the vibrating housing 813. The vibration damping component 820 can be connected to the inner wall of the housing side plate 8132 via a first elastic element 821. In some embodiments, the first elastic element 821 may include a diaphragm. The periphery of the diaphragm can be connected to or directly connected to the interior of the housing side plate 8132 of the vibrating housing 813 via a support structure. The housing side plate 8132 is a side wall surrounding the vibrating panel 8131. When the vibrating housing 813 vibrates, the housing side plate 8132 can cause the diaphragm to vibrate. Since the diaphragm here relies on its connection to the vibrating housing 813 and vibrates through the drive of the vibrating housing 813, it can be called a passive diaphragm. In some embodiments, the type of diaphragm may include, but is not limited to, a plastic diaphragm, a metal diaphragm, a paper diaphragm, a biological diaphragm, etc.

[0152] In some embodiments, the mass element 823 can be attached to the surface of the diaphragm to form a composite structure together with the diaphragm. The mass element 823 attached to the surface of the diaphragm to form a composite structure mainly plays the following roles: (1) The composite structure can serve as a counterweight element to adjust the mass of the diaphragm system, ensuring that the diaphragm system as a whole is within a certain mass range, so that the diaphragm itself has a large vibration amplitude, which can effectively reduce the vibration amplitude of the speaker 800 in the low frequency range; (2) The composite diaphragm structure formed by the combination of the mass element 823 and the diaphragm can make the composite diaphragm structure have higher stiffness, and the surface of the composite diaphragm is not prone to generating high-order modes, thus avoiding more peaks and valleys in the frequency response of the passive diaphragm.

[0153] In some embodiments, the type of the mass element 823 can include, but is not limited to, one or a combination of a paper cone, an aluminum plate, or a copper plate. In some embodiments, the mass element 823 can be made of the same material. For example, the composite structure can be a paper cone or an aluminum plate. In some embodiments, the mass element 823 can be made of different materials. For example, the mass element 823 can be a structure made of a combination of a paper cone and a copper plate. For another example, the mass element 823 can be a structure made of a mixture of aluminum and copper in a certain ratio.

[0154] In some embodiments, the way the mass element 823 is connected to the diaphragm can include, but is not limited to, bonding and fixing using glue, or welding, clamping, riveting, threaded connection (screw, screw, screw rod, bolt, etc.), interference fit, clamp connection, pin connection, wedge key connection, and integrally formed connection.

[0155] In some example application scenarios, when the diaphragm vibrates, it can cause the air inside the vibration shell 813 to vibrate. In some embodiments, a sound hole 840 can be formed on the vibration shell 813 to guide the air vibration inside the vibration shell to the outside of the vibration shell 813. The guided air vibration can be transmitted to the user's auditory nerve in an air conduction manner, so that the user can hear the sound. In some cases, due to the presence of the damping assembly 820, the mechanical vibration intensity of the vibration panel 8131 can be weakened, resulting in a decrease in the volume of the loudspeaker 800 in the low frequency region. The sound guided by the sound hole 840 can enhance the response of the loudspeaker 800 in the low frequency region, so that the loudspeaker 800 can still maintain a certain volume in the case of weak low frequency vibration.

[0156] In some embodiments, the sound outlet hole 840 can be formed at any position of the vibration housing 813. In some embodiments, the sound outlet hole 840 can be formed on the side of the vibration housing 813 facing away from the user's face, i.e., on the back plate 8133 of the housing. In some embodiments, the sound outlet hole 840 can also be formed on the side plate 8132 of the housing, for example, on the side plate 8132 of the housing facing the user's ear canal. In other embodiments, the sound outlet hole 840 can also be formed at the corner of the vibration housing 813, for example, at the junction of the side plate 8132 and the back plate 8133 of the housing. In some embodiments, the number of sound outlet holes 840 can be multiple. Multiple sound outlet holes 840 can be formed at different positions. For example, part of the multiple sound outlet holes 840 can be formed on the back plate 8133 of the housing, and the other part can be formed on the side plate 8132 of the housing. In some embodiments, at least part of the sound directed out of the sound outlet hole 840 can be guided to the user's ear, improving the low frequency response of the loudspeaker 800. In some embodiments, the above purpose can be achieved by arranging the sound outlet hole 840 at a position facing the user's ear. For example, when the user wears the loudspeaker 800, the side plate 8132 of the housing faces the user's ear, so the sound outlet hole 840 can be arranged on the side plate 8132 of the housing, and the sound directed out of the sound outlet hole 840 can be guided to the user's ear. In some embodiments, additional sound guiding structures can be provided to achieve the above purpose. For example, a sound guide tube can be arranged at the outlet of the sound outlet hole 840, and the sound can be guided to the direction of the user's ear through the sound guide tube. In some embodiments, the cross-sectional shape of the sound outlet hole 840 can include but is not limited to a circle, a square, a triangle, a polygon, etc.

[0157] In some embodiments, the loudspeaker 800 can further include a fixing assembly 830, which can be fixedly connected with the vibration housing 813 (e.g., the side plate 8132 of the vibration housing 813). The fixing assembly 830 can be used to maintain the stable contact of the loudspeaker 800 with the user's (e.g., the wearer's) face, avoid the shaking of the loudspeaker 800, and ensure the stable sound transmission of the loudspeaker 800.

[0158] In some embodiments, when the stiffness of the fixing assembly 830 is smaller (i.e., the stiffness coefficient is smaller), the low frequency response of the loudspeaker 800 at the first resonance peak 450 is more obvious (i.e., the vibration acceleration is greater, and the sensitivity of the loudspeaker 800 is higher), and the sound quality of the loudspeaker 800 is better. On the other hand, when the stiffness of the fixing assembly 830 is smaller (i.e., the stiffness coefficient is smaller), it is more conducive to attenuate the vibration of the vibration housing 813.

[0159] In some embodiments, the fixing component 830 can be an ear hook. A vibrating housing 813 can be connected to each end of the fixing component 830, and the two vibrating housings 813 are fixed to both sides of the user's skull in an ear hook manner, in which case the speaker is a binaural speaker. In some embodiments, the fixing component 830 can be a mono-ear clip. The fixing component 830 can be connected to a single vibrating housing 813 and fix the vibrating housing 813 to one side of the user's skull. The structure of the fixing component 830 can be the same as or similar to the fixing components in other embodiments of this specification (e.g., fixing component 230), and will not be described again here.

[0160] Figure 9 This is a schematic longitudinal section of a loudspeaker whose mass element is a grooved member, according to some embodiments of this specification. Figure 9 As shown, the loudspeaker 900 may include a vibration assembly 910, a damping assembly 920, and a fixing assembly 930. The vibration assembly 910 may include a vibrating element 911, a vibrating housing 913, and a second elastic element 915. The second elastic element 915 is used to elastically connect the vibrating element 911 and the vibrating housing 913, so as to transmit the mechanical vibration of the vibrating element 911 to the vibrating housing 913. The vibrating housing 913 contacts the user's facial skin, transmitting the mechanical vibration to the user's auditory nerve. The damping assembly 920 can reduce the vibration felt by the user when the vibrating housing 913 generates mechanical vibration. The fixing assembly may be fixedly connected to the resonant assembly 920.

[0161] In some embodiments, the vibrating element 911, the vibrating housing 913, and the second elastic element 915 are the same as or similar to the vibrating element 411, the vibrating housing 413, and the second elastic element 415 in the loudspeaker 400, and the details of their structure will not be described here.

[0162] The vibration damping assembly 920 may include a mass element 923 and a first elastic element 921. The mass element 923 can be elastically connected to the vibrating housing 913 via the first elastic element 921. Figure 9 The vibration damping component 920 can be connected to the outer wall of the housing back plate 9133 via the first elastic element 921. When the vibrating housing 913 experiences mechanical vibration, the resonant component formed by the mass element 923 and the first elastic element 921 can absorb a portion of the mechanical energy of the vibrating housing 913, thereby reducing the vibration amplitude of the vibrating housing 913.

[0163] Unlike the loudspeaker 400, the mass element 923 of the vibration-damping assembly 920 is a recessed member. The vibration housing 913 can be at least partially housed in the recessed member. In some embodiments, the recessed cross-sectional shape of the recessed member can be circular, square, polygonal, or the like. In some embodiments, the recessed cross-sectional shape of the recessed member can match the external profile of the vibration housing 913 so that the vibration housing 913 can be housed therein. For example, if the external profile of the vibration housing 913 is a cuboid, the recessed cross-sectional shape of the recessed member can be a square shape corresponding thereto. In some embodiments, the vibration housing 913 can be completely housed in the recess of the recessed member. In some embodiments, the vibration housing 913 can be partially housed in the recess of the recessed member. For example, the vibration panel 9131 and at least a portion of the housing side plate 9132 of the vibration housing 913 can be located outside the recess so as to facilitate the vibration panel 9131 to contact the skin of the user’s face to transmit vibrations.

[0164] In some embodiments, the first elastic element 921 can include a first portion and a second portion. The first portion of the first elastic element is connected with the vibration housing. The first portion of the first elastic element 921 is connected with the inner wall of the recessed member. For example, in the illustrated embodiment, the first portion of the first elastic element 921 is connected with the outer wall of the housing back plate 9133, and the second portion of the first elastic element 921 is connected with the inner side wall of the recessed member. For another example, the first portion of the first elastic element can be connected with the outer wall of the housing side plate, and the second portion of the first elastic element can be connected with the inner bottom wall of the recessed member. In some alternative embodiments, the vibration housing 913 can only include the vibration panel 9131 and the housing side plate 9132 connected therewith, without the housing back plate 9133. In this case, the mass element 923 can be connected with the inner wall and / or the outer wall of the housing side plate 9132 through the first elastic element 921. Figure 9 For another example, the first portion of the first elastic element can be connected with the outer wall of the housing side plate, and the second portion of the first elastic element can be connected with the inner bottom wall of the recessed member. In some alternative embodiments, the vibration housing 913 can only include the vibration panel 9131 and the housing side plate 9132 connected therewith, without the housing back plate 9133. In this case, the mass element 923 can be connected with the inner wall and / or the outer wall of the housing side plate 9132 through the first elastic element 921.

[0165] In some specific embodiments, the first elastic element 921 can be a ring structure, the first portion of the first elastic element 921 can be located in the central region of the ring structure, and the second portion can be located at the periphery of the ring structure. In some alternative embodiments, the first elastic element can be a spring. The two ends of the spring are connected with the vibration housing and the recessed member as the first portion and the second portion, respectively.

[0166] In some embodiments, the first elastic element 921 can be directly connected with the housing back plate 9133 and the groove member, for example, by welding, bonding, one-piece forming, etc. In some embodiments, the first elastic element 921 can be connected with the housing back plate 9133 and the groove member through a connecting piece. For example, a third connecting piece can be fixedly arranged on the housing back plate 9133, and a first part of the first elastic element 921 can be fixedly connected with the third connecting piece. A fourth connecting piece can be fixedly arranged on the groove member, and a second part of the first elastic element 921 can be fixedly connected with the fourth connecting piece.

[0167] In some embodiments, the internal size of the groove member can be greater than the external size of the vibration housing 913, and at this time, a cavity can be formed between the vibration housing 913 and the groove member. When the vibration housing 913 and the groove member vibrate, the air in the cavity can also vibrate to produce sound. At the same time, the groove member can form a sound outlet channel 940 with the outer wall of the vibration housing 913. For example, in the embodiment shown in the figure, there is a gap between the side wall of the groove member and the housing side plate 9132, which can serve as the sound outlet channel 940. The sound produced by the air vibration between the vibration housing 913 and the groove member can be transmitted to the outside through the sound outlet channel 940, and the human ear can partially receive the sound, which can enhance the low frequency and increase the volume to a certain extent. Figure 9

[0168] In some embodiments, the fixing assembly 930 can be used to keep the loudspeaker 900 in contact with the skull of the user's face. In some embodiments, the fixing assembly 930 can be fixedly connected with the resonance assembly 920. For example, the fixing assembly 930 can be fixedly connected or one-piece formed with the mass element 921 (for example, the groove member). In some embodiments, the fixing assembly 930 can be directly fixedly connected with the groove member. In some embodiments, the fixing assembly 930 can also be connected with the groove member through a fixing connecting piece.

[0169] In some embodiments, the fixing assembly 930 can be in the form of an ear hook. The two ends of the fixing assembly 930 are respectively connected with a groove member and a vibration housing 913 accommodated in the groove member, so as to fix the two groove members on the two sides of the skull in the form of an ear hook. In some embodiments, the fixing assembly 930 can be a single-ear ear clip. The fixing assembly 930 can be connected with one groove member and a vibration housing 913 accommodated in the groove member, and fix the groove member on one side of the human skull. The structure of the fixing assembly 930 can be the same as or similar to that of the fixing assembly (for example, the fixing assembly 830) in other embodiments of the present application, and will not be described here.

[0170] ​In some embodiments, more details about the mass element 923 and the resonant frequency of the resonant assembly formed by the mass element 923 and the first elastic element 921 can be found in the description of other embodiments in this specification, which will not be repeated here.

[0171] It should be noted that the foregoing one or more embodiments are merely for illustrative purposes and are not intended to limit the shape or number of the loudspeaker 900. After fully understanding the principle of the loudspeaker 900, the loudspeaker 900 can be deformed to obtain a loudspeaker 900 different from the embodiments of this specification. For example, the shape of the mass element can be changed. For another example, the material for making the first elastic element 921 can be adjusted so that the first elastic element 921 has a stronger vibration absorption effect. In some embodiments, the first elastic element 921 can also be foam or glue. For example, the first elastic element 921 can be glue coated on the outer wall of the back plate 9133 of the shell, and the groove member is adhered to the vibration shell 913 through the glue. In some embodiments, the glue can have a certain damping to be able to further absorb the vibration energy of the vibration shell 913 and reduce the vibration amplitude.

[0172] Figure 10 is a longitudinal sectional view of another loudspeaker to which a damping assembly is added according to some embodiments of this specification, Figure 11 is Figure 10 is a longitudinal sectional view of another angle of the loudspeaker. As Figure 10 and Figure 11 shown, the loudspeaker 1000 can include a vibration assembly 1010, a damping assembly 1020 and a fixing assembly 1030. The vibration assembly 1010 can include a vibration element 1011, a vibration shell 1013 and a second elastic element 1015 (as Figure 11 shown). The second elastic element 1015 is used to elastically connect the vibration element 1011 and the vibration shell 1013. In some embodiments, the vibration element 1011, the second elastic element 1015 and the fixing assembly 1030 are the same as or similar to the vibration element 411, the second elastic element 415 and the fixing assembly 430 in the loudspeaker 400, respectively, and the details of the structure will not be repeated here.

[0173] Unlike the speaker (e.g., the speaker 400) in the foregoing embodiments, the vibrating housing 1013 can be a separate plate-like or plate-like structure that directly contacts the user's facial skin to transmit vibrations, so the vibrating housing 1013 itself corresponds to the vibrating panel in the foregoing embodiments. The vibrating housing 1013 does not define a containing space, and the vibrating element 1011 and the second elastic element 1015 are directly connected to the vibrating housing 1013. The mass element 1023 can be a recessed member, and the mass element 1023 has a recess that can serve as a containing space, and at least a part of the vibrating assembly 1010 can be contained in the space formed by the mass element 1023. The first elastic element 1021 can connect the mass element 1023 and the vibrating housing 1013.

[0174] As shown in Figure 11 , the vibrating element 1011 can include a magnetic circuit assembly. The vibrating housing 1013 is provided with a coil, and the coil is surrounded by the magnetic circuit assembly, and the second elastic element 1015 connects the magnetic circuit assembly and the vibrating housing 1013.

[0175] In some embodiments, the second elastic element 1015 can be a vibration transmission sheet. In some embodiments, the vibration transmission sheet can be a ring structure. As shown in Figure 11 , the ring structure vibration transmission sheet is arranged outside the vibrating housing 1013, the side of the ring vibration transmission sheet is connected to the magnetic circuit assembly, and the middle of the ring vibration transmission sheet is connected to the vibrating housing 1013. When subjected to the action of the Ampere force to produce mechanical vibration, the vibrating housing 1013 can transmit the vibration to the mass element 1023 through the first elastic element 1021, so as to cause the mass element 1023 to vibrate, and finally achieve the effect of reducing the vibration amplitude of the vibrating assembly 1010. For more details of the vibration transmission sheet, please refer to the description of Figure 2 . Here, no longer tedious.

[0176] In some cases, after the speaker is improved as described in the foregoing embodiments, not only the frequency response range of the speaker is widened, especially the low frequency response range of the speaker is widened. But also the amplitude of the low frequency resonance peak generated by the speaker in the low frequency region is significantly reduced, the vibration feeling perceived by the user's skin when wearing the speaker is reduced, and the user's use experience is effectively improved.

[0177] In addition, the loudspeaker can produce sound leakage during operation. The sound leakage refers to that the loudspeaker produces sound during operation, and the sound can be heard by people other than the wearer of the loudspeaker. The sound leakage can be caused by various reasons, including that the vibration of the vibration element (e.g., the transducer) is transmitted to the vibration housing through the second elastic element to cause the vibration of the vibration housing. Or the vibration of the vibration panel is transmitted to the vibration housing through the connecting piece to cause the vibration of the vibration housing. Or the vibration of the vibration element causes the vibration of the air in the vibration housing, and the sound produced by the air vibration is guided out of the housing through the sound outlet hole formed in the housing, thereby causing the sound leakage.

[0178] It should be noted that the sound leakage of the loudspeaker is related to the mechanical vibration of the vibration housing. In some cases, the greater the mechanical vibration intensity of the vibration housing, the more serious the sound leakage of the loudspeaker. The smaller the mechanical vibration intensity of the vibration housing, the more weak the sound leakage of the loudspeaker. Therefore, when the mechanical vibration intensity of the vibration housing is reduced by the damping assembly in the foregoing one or more embodiments, the sound leakage of the loudspeaker is also improved. In some embodiments, the vibration intensity of the vibration housing can be reduced by the damping assembly, thereby weakening the sound leakage of the loudspeaker. The damping assembly can be the same as or similar to the description in the foregoing one or more embodiments. In some embodiments, the damping assembly can include a first elastic element having a certain damping, so that the first elastic element can absorb the mechanical energy of the vibration housing (e.g., the housing side plate and the housing back plate), reduce the vibration intensity of the vibration housing, and weaken the sound leakage of the loudspeaker. In some embodiments, the damping assembly can include the first elastic element and the mass element at the same time, and the mechanical vibration is transmitted to the mass element through the first elastic element to cause the vibration of the mass element to achieve the purpose of absorbing the mechanical energy of the vibration housing.

[0179] Figure 12 FIG. 1 is a cross-sectional view of a loudspeaker according to some embodiments of the disclosure. As shown in FIG. 1, the loudspeaker can include a vibration assembly 110 and a damping assembly 120. The vibration assembly 110 can include a vibration element 111 and a vibration housing 113 connected to the vibration element 111. The vibration element 111 can generate mechanical vibration and transmit the mechanical vibration to the vibration housing 113 to cause the vibration of the vibration housing 113. The vibration housing 113 is in contact with the skin of the user's face to transmit the vibration to the user's auditory nerve in a bone conduction manner. Figure 12

[0180] As shown in FIG. 2, the loudspeaker can include a vibration assembly 210 and a damping assembly 220. The vibration assembly 210 can include a vibration element 211 and a vibration housing 213 connected to the vibration element 211. The vibration element 211 can generate mechanical vibration and transmit the mechanical vibration to the vibration housing 213 to cause the vibration of the vibration housing 213. The vibration housing 213 is in contact with the skin of the user's face to transmit the vibration to the user's auditory nerve in a bone conduction manner. Figure 12 ​As shown, the vibrating housing 1213 can include a vibrating panel 12131, a housing side plate 12132, and a housing back plate 12133. The housing back plate 12133 is disposed opposite to the vibrating panel 12131, and the housing side plate 12132 is connected between the housing back plate 12133 and the vibrating panel 12131. The vibrating panel 12131 can be in contact with the skin of the user's face.

[0181] In some embodiments, the vibrating panel 12131 and the housing side plate 12132 can be directly connected, for example, by bonding, welding, riveting, nailing, one-piece forming, or the like. In other embodiments, the vibrating panel 12131 and the housing side plate 12132 can be connected by a connecting member. In some embodiments, the vibrating panel 12131 and the housing side plate 12132 can be elastically connected to reduce the intensity of mechanical vibration transmitted to the housing side plate 12132 and the housing back plate 12133, thereby reducing the sound leakage caused by the vibration of the housing side plate 12132 and the housing back plate 12133. In other embodiments, the vibrating panel 12131 and the housing side plate 12132 can be rigidly connected. In the present embodiment, since the vibrating element 1211 is directly connected to the vibrating panel 12131, the mechanical vibration generated by the vibrating element 1211 can be directly transmitted to the user via the vibrating panel 12131. Therefore, the vibrating panel 12131 and the housing side plate 12132 can be elastically connected to reduce the mechanical energy received by the housing side plate 12132 and the housing back plate 12133, thereby reducing the sound leakage caused by the vibration of the housing side plate 12132 and the housing back plate 12133.

[0182] In the present embodiment, the vibrating element 1211 is connected to the vibrating panel 12131 to transmit mechanical vibration to the vibrating panel 12131. The vibrating panel 12131 in turn transmits the mechanical vibration to the housing side plate 12132 and the housing back plate 12133 to cause them to vibrate. Therefore, the vibrating housing 1213 will continue to vibrate during the operation of the loudspeaker 1200, and the vibration of the vibrating housing 1213 will cause air vibration, resulting in sound leakage.

[0183] The damping assembly 1220 includes a first elastic element 1221 and a mass element 1223. The mass element 1223 is connected to the shell side plate 12132 and the shell back plate 12133 through the first elastic element 1221. Similarly to the foregoing embodiments, when the vibration shell 1213 vibrates, the mechanical vibration of the vibration shell 1213 can be transmitted to the mass element 1223 through the first elastic element 1221, so as to cause the mass element 1223 to vibrate. The damping assembly 1220 can absorb the mechanical energy of the vibration shell 1213 (mainly the shell back plate 12133 and the shell side plate 12132) in a specific frequency band, so as to reduce the vibration amplitude of the vibration shell 1213 and reduce the sound leakage caused by vibration. The specific range of the specific frequency band is related to the elastic coefficient and mass of the resonance assembly composed of the first elastic element 1221 and the mass element 1223. The frequency band range of the resonance assembly absorbing vibration can be adjusted by changing the elastic coefficient and mass of the resonance assembly.

[0184] In some embodiments, the frequency band range of the resonance assembly absorbing vibration can be adjusted by adjusting the type, hardness, thickness, and area of the first elastic element 1221.

[0185] For example, the first elastic element is glue. In some embodiments, the Shore hardness of the glue can be in the range of 10-80. In some embodiments, the Shore hardness of the glue can be in the range of 20-60. In some embodiments, the Shore hardness of the glue can be in the range of 25-55. In some embodiments, the Shore hardness of the glue can be in the range of 30-50.

[0186] After the glue is coated on the inner wall of the shell back plate 12133, a glue layer can be formed. In some embodiments, the thickness of the glue layer can be between 10 μm and 200 μm. In some embodiments, the thickness of the glue layer can be between 20 μm and 190 μm. In some embodiments, the thickness of the glue layer can be between 30 μm and 180 μm. In some embodiments, the thickness of the glue layer can be between 40 μm and 160 μm. In some embodiments, the thickness of the glue layer can be between 50 μm and 150 μm.

[0187] In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can account for 1% to 98% of the surface area of the inner wall of the back plate 12133 of the shell. In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can account for 5% to 90% of the surface area of the inner wall of the back plate 12133 of the shell. In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can account for 10% to 60% of the surface area of the inner wall of the back plate 12133 of the shell. In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can account for 20% to 40% of the surface area of the inner wall of the back plate 12133 of the shell. In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can be between 10mm 2 and 200mm 2 . In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can be between 20mm 2 and 190mm 2 . In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can be between 30mm 2 and 180mm 2 . In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can be between 40mm 2 and 170mm 2 . In some embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can be between 50mm 2 and 150mm 2 . In some specific embodiments, the area of the glue layer that is in contact with the inner wall of the back plate 12133 of the shell can be 10mm 2 .

[0188] Figure 13 is a graph showing the sound leakage intensity of a loudspeaker according to some embodiments of the present disclosure. In some embodiments, the sound leakage intensity of a loudspeaker without a damping assembly is shown as a dashed line in the graph, and the sound leakage intensity of a loudspeaker with a damping assembly is shown as a solid line in the graph. Figure 13 In some embodiments, the damping assembly can include only a mass element. In some embodiments, the mass element can be an inner shell that is disposed inside the vibration shell (i.e., the shell in Figure 13 . Figure 13It can be seen that, under the influence of the damping assembly 1220, the sound leakage intensity of the loudspeaker 1200 near 10000Hz (for example, in the range of 10000Hz-10300Hz) is significantly reduced. In the present embodiment, the first elastic element 1221 of the damping assembly 1220 is glue with a Shore hardness of between 30-50. The thickness of the glue layer formed by coating the inner wall of the back plate 12133 of the shell is between 50μm-150μm. The bonding area of the glue layer with the inner wall of the back plate 12133 of the shell is 150mm 2 .

[0189] In addition to reducing the sound leakage of the loudspeaker 1200 in the high frequency region (for example, 10000HZ-10300Hz), the damping assembly 1220 of the present specification can also reduce the sound leakage of the conductive loudspeaker 1200 in other frequency bands. In some embodiments, foam can be selected as the first elastic element 1221, and by adjusting the thickness of the foam to change its elasticity and damping, the frequency band of the sound leakage can be controlled in the medium and low frequency region. In some embodiments, the thickness of the foam can be between 0.3mm-2mm. In some embodiments, the thickness of the foam can be between 0.4mm-1.9mm. In some embodiments, the thickness of the foam can be between 0.5mm-1.8mm. In some embodiments, the thickness of the foam can be between 0.6mm-1.8mm.

[0190] Figure 14 is a sound pressure level curve diagram of another loudspeaker according to some embodiments of the present specification. Figure 14 respectively show the sound pressure level curve of the loudspeaker 1200 with the damping assembly 1220 added with foam with a thickness of 0.6mm as the first elastic element 1221, the sound pressure level curve of the loudspeaker 1200 with the damping assembly 1220 added with foam with a thickness of 1.2mm as the first elastic element 1221, the sound pressure level curve of the loudspeaker 1200 with the damping assembly 1220 added with foam with a thickness of 1.8mm as the first elastic element 1221, and the sound pressure level curve of the loudspeaker 200 without the damping assembly 1220. Among them, the ordinate SPL (Sound Pressure Level) is expressed as the sound pressure level, which can be equivalent to the mechanical vibration intensity of the loudspeaker 1200, that is, the larger the value of the ordinate in the graph, the greater the mechanical vibration intensity of the loudspeaker 1200. Since the mechanical vibration of the loudspeaker 1200 mainly comes from the vibration of the vibrating shell 1213, the value of the ordinate can also represent the mechanical vibration intensity of the vibrating shell 1213.

[0191] From Figure 14 It can be seen that, compared with the loudspeaker without the resonance assembly (in the present embodiment, the loudspeaker 200), the loudspeaker 1200 with the damping assembly 1220 has a lower sound leakage intensity in the medium and low frequency region (for example, 1000Hz-5000Hz). Figure 12In the illustrated embodiment, the damping assembly 1220 can be added to the speaker 1200 of the resonance assembly to reduce the vibration intensity of the speaker 1200 in a certain frequency range. For example, when the thickness of the foam of the damping assembly 1220 of the speaker 1200 is 0.6 mm, the vibration intensity of the speaker 1200 is reduced in the frequency range of about 180 Hz to 1010 Hz, and a trough (the minimum vibration intensity in the frequency range of 180 Hz to 1010 Hz) occurs at a frequency of about 1000 Hz. In another example, when the thickness of the foam of the damping assembly 1220 of the speaker 1200 is 1.2 mm, the vibration intensity of the speaker 1200 is reduced in the frequency range of about 170 Hz to 750 Hz, and a trough (the minimum vibration intensity in the frequency range of 170 Hz to 750 Hz) occurs at a frequency of about 650 Hz. In another example, when the thickness of the foam of the damping assembly 1220 of the speaker 1200 is 1.8 mm, the vibration intensity of the speaker 1200 is reduced in the frequency range of about 160 Hz to 350 Hz, and a trough (the minimum vibration intensity in the frequency range of 160 Hz to 350 Hz) occurs at a frequency of about 300 Hz. Due to the reduction in vibration intensity, the sound leakage generated by the speaker 1200 during operation is also reduced.

[0192] It should be noted that the foregoing one or more embodiments are merely for illustrative purposes and are not intended to limit the shape or number of the speaker 1200. After fully understanding the principle of sound leakage reduction of the speaker 1200, the speaker 1200 can be transformed to obtain a speaker 1200 different from the embodiments of the present specification. For example, the damping assembly 1220 can be transformed with reference to the foregoing embodiments. In some embodiments, the damping assembly 1220 can only include the first elastic element 1221 without the mass element 1223. For example, the first elastic element 1221 itself can have a certain damping to be able to absorb and consume the vibration energy of the vibration shell 1213 (for example, the shell back plate 12133 and the shell side plate 12132 of the vibration shell 1213) connected thereto, and also achieve the purpose of sound leakage reduction.

[0193] Figure 15 is a cross-sectional view of a speaker with a first elastic element having a hole according to some embodiments of the present specification. As shown in FIG. 13, the first elastic element 1221 has a hole 12211. The hole 12211 can be a through hole or a blind hole. The hole 12211 can be arranged in the first elastic element 1221 in various ways. For example, the hole 12211 can be arranged in the first elastic element 1221 in a straight line, a curve, a zigzag, a spiral, a circle, a polygon, or any other shape. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in a straight line. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in a curve. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in a zigzag. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in a spiral. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in a circle. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in a polygon. In some embodiments, the hole 12211 can be arranged in the first elastic element 1221 in any other shape. Figure 16As shown, the speaker 1500 can include a vibration assembly 1510 and a damping assembly 1520. The vibration assembly 1510 can include a vibration element 1511 (e.g., a transducer device) that generates mechanical vibrations and a vibration housing 1513 that contacts the user’s facial skin. The damping assembly 1520 is connected with the vibration housing 1513 to absorb the mechanical energy of the vibration housing 1513, reduce the vibration amplitude of the vibration housing 1513, and ultimately reduce the sound leakage caused by the vibration of the vibration housing 1513. In some embodiments, the vibration housing 1513 (including the housing side plate 15132, the housing back plate 15133, and the housing face plate 15131), the vibration element 1511, and the mass element 1523 in the speaker 1500 are the same as or similar to the vibration housing 1213 (including the housing side plate 12132, the housing back plate 12133, and the vibration face plate 12131), the vibration element 1211, and the mass element 1223 in the speaker 1200, which will not be described here again.

[0194] Unlike speaker 1200, the first elastic element 1521 and the mass element 1523 of speaker 1500 are not fully connected. This incomplete connection can mean that there is space between the contact surfaces of the mass element 1523 and the first elastic element 1521. Alternatively, a filler may be provided in the first elastic element 1521. An exemplary description is provided. In some embodiments, the side of the first elastic element 1521 facing away from the housing back plate 15133 has a hole 15211. Due to the presence of the hole 15211, when the mass element 1523 is connected to the first elastic element 1521, there is space between the contact surfaces of the mass element 1523 and the first elastic element 1521. In some cases, the pores 15211 in the first elastic element 1521 can further reduce the elasticity of the first elastic element 1521, allowing it to provide sufficiently low elasticity even with a thinner thickness, making it easy to tune the resonant frequency of the resonant assembly formed by the first elastic element 1521 and the mass element 1523 to the desired frequency band. In some alternative embodiments, the pores 15211 can be disposed inside the first elastic element 1521. In other embodiments, pores 15211 are provided on both the surface and inside of the first elastic element 1521. In some embodiments, the pores 15211 can be formed by creating openings in the first elastic element 1521. For example, if the first elastic element 1521 is plastic, creating openings on the surface and / or inside the plastic can form the pores 15211. In other embodiments, the pores 15211 can be a structure inherent to the first elastic element 1521 itself. For example, the first elastic element 1521 can be foam, which itself has a porous structure that can be directly used as pores 15211. In some embodiments, a filler can be provided in the pores 15211. An exemplary filler can be a damping filler, such as damping adhesive or damping grease. In some cases, providing a damping filler in the pores 15211 can increase the damping of the first elastic element 1521. When the speaker 1500 is working, the first elastic element 1521 can further dissipate the vibration energy of the vibrating housing 1513, reduce the vibration amplitude of the vibrating housing 1513, and reduce sound leakage.

[0195] Figure 16 This is a cross-sectional schematic diagram of a loudspeaker including two sets of resonant components, according to some embodiments of this specification. Figure 12As shown, the loudspeaker 1600 may include a vibration assembly 1610 and a damping assembly 1620. The vibration assembly 1610 may include a vibration element 1611 (e.g., a transducer) that generates mechanical vibrations and a vibration housing 1613 that comes into contact with the user's facial skin. The damping assembly 1620 is connected to the vibration housing 1613 to absorb the mechanical energy of the vibration housing, reduce the vibration amplitude of the vibration housing 1613, and ultimately reduce sound leakage caused by the vibration of the vibration housing 1613. In some embodiments, the vibrating housing 1613 (including housing side plate 16132, housing back plate 16133 and housing front plate 16131), vibrating element 1611, first elastic element 1621, and mass element 1623 in the loudspeaker 1600 are the same as or similar to the vibrating housing 1213 (including housing side plate 12132, housing back plate 12133 and vibrating front plate 12131), vibrating element 1211, first elastic element 1221, and mass element 1223 in the loudspeaker 1200, and will not be described in detail here.

[0196] and Figure 16 Unlike the speaker 1200 shown, the vibration damping assembly 1620 of the speaker 1600 includes two sets of resonant assemblies. For ease of description, the resonant assembly disposed on the upper side of the inner wall of the housing back plate 16133 can be referred to as the first resonant assembly 1620-1, and the resonant assembly disposed on the lower side of the inner wall of the housing back plate 16133 can be referred to as the second resonant assembly 1620-2. The mass element in each set of resonant assemblies is connected to the inner wall of the housing back plate through a first elastic element. Specifically, the first elastic element 1621-1 of the first resonant assembly 1620-1 is connected to the inner walls of both the housing back plate 16133 and the upper housing side plate 16132. The first elastic element 1621-2 of the second resonant assembly 1620-2 is connected to the inner walls of both the housing back plate 16133 and the lower housing side plate 16132. Figure 16 As shown, the first elastic elements of both sets of resonant components are made of the same material and have the same thickness. For example, both sets of resonant components use adhesive as the first elastic element, and the adhesive layer formed on the inner wall of the housing back plate has the same or similar thickness. In some alternative embodiments, the first elastic elements of the two sets of resonant components may be made of different materials or have different thicknesses. For example, the first elastic element 1621-1 of the first resonant component 1620-1 may be foam, while the first elastic element 1621-2 of the second resonant component 1620-2 may be adhesive.

[0197] See also Figure 16 The first resonant component 1620-1 and the second resonant component 1620-2 are spaced apart by a preset distance. For example, the edges of the first elastic elements 1621 of the two sets of resonant components are spaced apart by a preset distance. This preset distance can be set according to actual needs.

[0198] The first resonant component 1620-1 and the second resonant component 1620-2 may be not limited to Figure 16 The arrangement and location of the components are specified. In some embodiments, the first resonant component 1620-1 and the second resonant component 1620-2 can be disposed in any region of the inner wall of the housing back plate 16133. The inner wall of the housing back plate 16133 may include an edge region and a central region. The edge region may refer to the region near the housing side plate 16132. In some embodiments, both the first resonant component 1620-1 and the second resonant component 1620-2 may be disposed in the edge region. For example, in... Figure 17 In this embodiment, the first elastic elements of both sets of resonant components are connected to the housing side plate 16132. In other embodiments, the first resonant component 1620-1 and the second resonant component 1620-2 may both be disposed in the central region. For example, the first elastic elements of both sets of resonant components may not be connected to the housing side plate 16132, and may be spaced from the housing side plate 16132 by a preset distance threshold, which can be set according to actual needs. In some alternative embodiments, the first resonant component 1620-1 and the second resonant component 1620-2 may be disposed in the edge region and the central region, respectively. For example, the first resonant component 1620-1 may be disposed in the edge region, and its first elastic element 1621-1 may be connected to the upper housing side plate 16132. The second resonant component 1620-2 may be disposed in the central region, and its first elastic element 1621-2 may only be connected to the inner wall of the housing back plate 16133. In another example, the first resonant component 1620-1 can be disposed in the edge region and form a ring structure around the entire housing back plate 16133 to surround the second resonant component 1620-2 therein. For example, a ring of foam is disposed around the edge region of the housing back plate 16133 as a first elastic element 1621-1, and then a ring-shaped mass element 1623-1 corresponding to the shape of the foam is connected to the foam. The first elastic element 1621-2 and the mass element 1623-2 of the second resonant component 1620-2 are disposed in the central region.

[0199] As described in the foregoing embodiments, the resonant frequency of the first resonant component 1620-1 and the resonant frequency of the second resonant component 1620-2 can be the same or different. When the resonant frequencies of the first resonant component 1620-1 and the second resonant component 1620-2 are different, a vibration reduction effect can be generated in the frequency band near their respective resonant frequencies, thus broadening the vibration absorption frequency band. When the resonant frequencies of the first resonant component 1620-1 and the second resonant component 1620-2 are the same, the vibration reduction effect in the frequency band near the resonant frequencies can be further enhanced.

[0200] Figure 17is a cross-sectional schematic view of another speaker including two sets of resonant assemblies according to some embodiments of the present specification. As shown in Figure 16 The speaker 1700 can include a vibration assembly 1710 and a damping assembly 1720, as shown. The vibration assembly 1710 can include a vibration element 1711 (e.g., a transducing device) that generates mechanical vibrations and a vibration housing 1713 that contacts the user’s facial skin. The damping assembly 1720 is connected to the vibration housing 1713 to absorb the mechanical energy of the vibration housing 1713, reduce the vibration amplitude of the vibration housing 1713, and ultimately weaken the sound leakage caused by the vibration of the vibration housing 1713. In some embodiments, the vibration housing 1713 (including the housing face plate 17131, the housing side plate 17132, and the housing back plate 17133), the vibration element 1711, the first elastic element (e.g., the first elastic element 1721-1, the first elastic element 1721-2), and the mass element (e.g., the mass element 1723-1, the mass element 1723-2) in the speaker 1700 are the same as or similar to the vibration housing 1613 (including the housing face plate 16131, the housing side plate 16132, and the housing back plate 16133), the vibration element 1611, the first elastic element (e.g., the first elastic element 1621-1, the first elastic element 1621-2), and the mass element (e.g., the mass element 1623-1, the mass element 1623-2) in the speaker 1600, which will not be described here.

[0201] With ​The loudspeaker 1700 differs from the loudspeaker 1600 in that the two sets of resonant assemblies (e.g., the first resonant assembly 1720-1 and the second resonant assembly 1720-2) are not both directly connected to the vibrating enclosure 1713, but are connected in a stacked manner. For example, one side of the first elastic element 1721-1 of the first resonant assembly 1720-1 is connected to the inner wall of the vibrating enclosure 1713, and the edge of the first elastic element 1721-1 is also connected to the side plate 17132 of the enclosure. The mass element 1723-1 is connected to the other side of the first elastic element 1721-1. One side of the first elastic element 1721-2 of the second resonant assembly 1720-2 is connected to the mass element 1723-1 of the first resonant assembly 1720-1 away from the side of the back plate 17133 of the enclosure, and the edge thereof is not connected to the side plate 17132 of the enclosure, and the other side is connected to the mass element 1723-2. In some embodiments, during actual manufacturing, glue can be applied on the inner wall of the back plate 17133 (as the first elastic element 1721-1 of the first resonant assembly 1720-1), the glue covers the inner wall of the back plate 17133, and the mass element 1723-1 is bonded to the surface of the glue. Then glue is applied on the side of the mass element 1723-1 away from the back plate 17133 (as the first elastic element 1721-2 of the second resonant assembly 1720-2), and finally another mass element 1723-2 is bonded to the surface of the glue.

[0202] In some cases, when at least two sets of resonant assemblies are connected in series as a whole in a stacked manner, a more complex resonant system can be formed, which has multiple resonant modes, i.e., multiple resonant frequencies. At the corresponding resonant frequencies, the resonant system can absorb the vibration energy of the vibrating enclosure 1713 to reduce the sound leakage caused by the vibration of the vibrating enclosure 1713.

[0203] The above description has been made to the basic concept, and it is obvious that the above-mentioned disclosure of the invention is only an example and does not constitute a limitation on the present specification. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present specification. Such modifications, improvements and corrections are suggested in the present specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present specification.

[0204] Also, the use of "a" or "an" to describe embodiments of the present disclosure are intended to be a special case of "one or more," unless otherwise noted. Also, the use of "another" to describe embodiments of the present disclosure is intended to be a special case of "one or more," unless otherwise noted.

[0205] Similarly, it is to be noted that, as used in the specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless otherwise specified. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0206] Some embodiments use numerical ranges to describe quantities of components, attributes, etc. It should be understood that such numerical ranges described in the embodiments are, in some examples, modified by the word "about." Unless otherwise indicated, "about" indicates that a value can vary by ±20%. Accordingly, numerical values disclosed in the specification and claims of this application are to be treated as approximations unless otherwise indicated. In some embodiments, numerical data in the specification and claims are presented in a "rounded" format, which is understood to have its normal meaning in the art. Although the numerical ranges and data used in some embodiments of the present disclosure are approximations, unless otherwise indicated, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values set forth in the specific examples also can depend on the

[0207] Finally, it should be understood that the embodiments described herein are intended to be illustrative only and that the scope of the present disclosure is properly determined by a fair reading and interpretation of the claims that follow. Thus, alternative configurations of the embodiments described herein are considered to be within the scope of the present disclosure. Accordingly, the embodiments described herein are not to be considered as limiting the disclosure to the particular examples described.

Claims

1. A loudspeaker, comprising: a vibration assembly, the vibration assembly comprising a vibration element, a vibration housing, and a first vibration transmission connector, the first vibration transmission connector being fixedly connected with the vibration element, the vibration element converting electrical signals into mechanical vibrations, the vibration housing being in contact with a user's facial skin; a first elastic element, the first elastic element being elastically connected with the vibration housing; a mass element, the mass element being connected with the vibration housing through the first elastic element, the mass element and the first elastic element being connected to form a resonance assembly; wherein the vibration housing comprises a vibration panel, the vibration panel being in contact with a user's facial skin, a ratio of a mass of the mass element to a mass of the vibration panel being in a range of 0.04 to 1.

25. 2.The loudspeaker of claim 1, the first elastic element being elastically connected with the vibration panel. 3.The loudspeaker of claim 2, the mass element being a groove member, the vibration element being at least partially accommodated in the groove member, the first elastic element connecting the vibration panel and an inner wall of the groove member. 4.The loudspeaker of any one of claims 1 to 3, the first elastic element being a vibration transmission sheet. 5.The loudspeaker of claim 1, a ratio of a mass of the mass element to a mass of the vibration panel being in a range of 0.1 to 0.

6. 6.The loudspeaker of claim 1, the vibration assembly generating a first resonance peak at a first frequency, the resonance assembly generating a second resonance peak at a second frequency, a ratio of the second frequency to the first frequency being in a range of 0.5 to 2. 7.The loudspeaker of claim 6, the vibration assembly generating a first resonance peak at a first frequency, the resonance assembly generating a second resonance peak at a second frequency, a ratio of the second frequency to the first frequency being in a range of 0.9 to 1.

1. 8.The loudspeaker of claim 6 or 7, the first frequency and the second frequency both being less than 500 Hz. 9.The loudspeaker of claim 8, in a frequency range less than the first frequency, a vibration amplitude of the resonance assembly being greater than a vibration amplitude of the vibration housing. 10.The loudspeaker of claim 1, the vibration housing comprising a vibration panel and a housing back plate disposed opposite the vibration panel, the vibration panel being in contact with a user's facial skin, the mass element being connected with the housing back plate through the first elastic element. The first elastic element is arranged on the surface of the back plate of the shell, and the contact area between the first elastic element and the back plate of the shell is at least greater than 10 mm 2 . 11.The loudspeaker of claim 10, the first elastic element comprising at least one of silicone, plastic, glue, foam, and spring. 12.The loudspeaker of claim 11, the first elastic element being the glue. 13.The loudspeaker of claim 12, a Shore hardness of the glue being in a range of 30 to 50. 14.The loudspeaker of claim 12, a tensile strength of the glue being not less than 1 MPa. 15.The loudspeaker of claim 12, an elongation at break of the glue being in a range of 100% to 500%.

16. The speaker of claim 12, wherein the bonding strength between the glue and the housing back plate is in the range of 8 MPa to 14 MPa.

17. The speaker of claim 12, wherein the thickness of the glue layer formed on the surface of the housing back plate is in the range of 50 μm to 150 μm.

18. The speaker of claim 12, wherein the bonding area between the glue and the housing back plate is in the range of 1% to 98% of the area of the inner wall of the housing back plate.

19. The loudspeaker of claim 18, the glue having a bonding area with the back plate of the enclosure in the range of 100 mm 2 ~ 200 mm 2 .

20. The loudspeaker of claim 19, the glue has a bonding area of 150 mm 2 .

21. The speaker of claim 11, wherein at least one of the interior and the surface of the first elastic element has a pore.

22. The speaker of claim 21, wherein the pore is filled with a damping filler.

23. The speaker of claim 11, wherein the first elastic element is the foam.

24. The speaker of claim 23, wherein the thickness of the foam is in the range of 0.6 mm to 1.8 mm.

25. The speaker of claim 10, wherein the ratio of the mass of the mass element to the sum of the masses of the vibrating panel and the housing back plate is in the range of 0.04 to 1.

25.

26. The speaker of claim 25, wherein the ratio of the mass of the mass element to the sum of the masses of the vibrating panel and the housing back plate is in the range of 0.1 to 0.

6.

27. The speaker of claim 10, wherein the material used to manufacture the mass element comprises at least one of plastic, metal, and composite material.

28. The speaker of claim 10, wherein the resonance assembly comprises at least two groups, each of the first elastic elements in the resonance assembly is connected to the housing back plate and adjacent two groups of the resonance assembly are spaced apart by a predetermined distance.

29. The speaker of claim 10, wherein the resonance assembly comprises at least two groups, the first elastic elements of at least two groups of the resonance assembly are stacked along the thickness direction of the first elastic element, and the first elastic elements of adjacent two groups of the resonance assembly are connected to the mass element.

30. The speaker of any one of claims 25-29, wherein the first elastic element is disposed on the inner wall of the housing back plate.

31. The speaker of claim 30, wherein the first elastic element comprises a diaphragm, and the mass element comprises a composite structure attached to the surface of the diaphragm.

32. The speaker of claim 31, wherein the composite structure comprises at least one of a paper cone, an aluminum sheet, or a copper sheet.

33. The speaker of claim 31, wherein the vibrating housing has a sound outlet hole, and the sound generated by the vibration of the resonance assembly is guided to the outside through the sound outlet hole.

34. The speaker of claim 33, wherein the sound outlet hole is formed on the housing back plate.

35. The speaker of any one of claims 25-29, wherein the first elastic element is disposed on the outer wall of the housing back plate.

36. The loudspeaker of claim 35, wherein the mass member is a recessed member, the vibrating enclosure is at least partially housed within the recessed member, the first elastic member connects an outer wall of the vibrating enclosure and an inner wall of the recessed member, and a sound passage is formed between the inner wall of the recessed member and the outer wall of the vibrating enclosure.

37. The loudspeaker of claim 30, further comprising a functional member, and the mass member is connected to the functional member.

38. The loudspeaker of claim 37, wherein the functional member comprises a battery, a printed circuit board.

39. The loudspeaker of claim 1, wherein the vibrating assembly further comprises a second elastic member, and the vibrating member transmits the mechanical vibration to the vibrating enclosure through the second elastic member.

40. The loudspeaker of claim 39, wherein the second elastic member is a vibration transmission sheet, and the vibration transmission sheet is fixedly connected to the vibrating enclosure.

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