Loudspeaker

Abstract

An embodiment of the present specification discloses a speaker, comprising: a vibration assembly including a vibration element and a vibration housing, the vibration element converting an electrical signal into mechanical vibration, the vibration housing being in contact with a face skin of a user; and the first elastic element is elastically connected with the vibration shell.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 2021112346049 filed on October 22, 2021 and invention name “Speaker”.

[0002] Priority information

[0003] The present invention 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

[0004] The embodiments of the present specification relate to the technical field of audio output, and in particular to a speaker. Background Art

[0005] A speaker with the function of conducting sound through bones can convert sound signals into mechanical vibration signals, and transmit the mechanical vibration signals to the human auditory nerve through human tissues and bones, so that the wearer can hear the sound.

[0006] This specification provides a speaker that can reduce the vibration amplitude at a specific frequency, reduce the low-frequency vibration feeling of the speaker, and weaken the sound leakage when the speaker is working, thereby improving the sound quality of the speaker. Summary of the invention

[0007] The purpose of the present invention is to provide a speaker, the purpose of which is to reduce the vibration amplitude of the vibration shell that contacts the user's face during the use of the speaker, weaken the low-frequency vibration feeling, reduce the sound leakage of the speaker, and improve the sound quality.

[0008] In order to achieve the purpose of the above invention, the technical solution provided by the present invention is as follows: a speaker, comprising: a vibration component, the vibration component comprising a vibration element and a vibration shell, the vibration element converts an electrical signal into mechanical vibration, and the vibration shell contacts the user's facial skin; a first elastic element, the first elastic element is elastically connected to the vibration shell.

[0009] In some embodiments, the speaker further includes a mass element, wherein the mass element is connected to the vibration shell via the first elastic element, and the mass element is connected to the first elastic element to form a resonance component.

[0010] In some embodiments, the vibration shell includes a vibration panel, the vibration panel is in contact with the facial skin of the user, and the first elastic element is elastically connected to the vibration panel.

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

[0012] In some embodiments, the vibration shell includes a vibration panel and a shell back plate arranged opposite to the vibration panel, the vibration panel contacts the user's facial skin, and the mass element is connected to the shell back plate through the first elastic element; the first elastic element is arranged on the surface of the shell back plate, and the fitting area between the first elastic element and the shell 2 back plate is at least greater than 10 mm.

[0013] In some embodiments, the resonant components include at least two groups, the first elastic elements in each group of the resonant components are connected to the shell back plate, and two adjacent groups of the resonant components are spaced apart by a preset distance.

[0014] In some embodiments, the resonant component includes at least two groups, at least two groups of the resonant components are stacked along the thickness direction of the first elastic element, and the first elastic elements of two adjacent groups of the resonant components are connected to the mass element.

[0015] In some embodiments, the first elastic element is disposed on the inner wall of the housing back plate.

[0016] In some embodiments, the first elastic element includes a diaphragm, and the mass element includes a composite structure attached to the surface of the diaphragm.

[0017] In some embodiments, the first elastic element is disposed on the outer wall of the shell back plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents a similar structure, wherein:

[0019] Figure 1 is a schematic longitudinal cross-sectional view of a loudspeaker according to some embodiments of the present specification;

[0020] Figure 2 is a schematic longitudinal section diagram of a loudspeaker without a vibration reduction component according to some embodiments of the present specification;

[0021] Figure 3 is a partial frequency response curve diagram of a loudspeaker without adding a vibration reduction component according to some embodiments of this specification;

[0022] Figure 4is a schematic longitudinal section diagram of a loudspeaker with a vibration reduction assembly added according to some embodiments of this specification;

[0023] Figure 5 is a partial frequency response curve of a loudspeaker with a vibration reduction component added according to some embodiments of this specification;

[0024] Figure 6 is a simplified mechanical model schematic diagram of a loudspeaker without adding a vibration reduction component according to some embodiments of this specification;

[0025] Figure 7 is a simplified mechanical model schematic diagram of a loudspeaker with a vibration reduction component added according to some embodiments of this specification;

[0026] Figure 8 is a schematic longitudinal cross-sectional view of a loudspeaker in which the first elastic element is a diaphragm according to some embodiments of this specification;

[0027] Fig. 9 is a schematic longitudinal section diagram of a loudspeaker in which the mass element is a groove member according to some embodiments of this specification;

[0028] Fig.10 is a schematic longitudinal section diagram of another loudspeaker with a vibration reduction assembly added according to some embodiments of this specification;

[0029] Fig.11 yes Fig.10 A schematic longitudinal section view of the loudspeaker at another angle shown;

[0030] Fig.12 is a cross-sectional schematic diagram of a speaker in which a vibration reduction assembly is arranged inside a vibration housing according to some embodiments of this specification;

[0031] Fig.13 is a sound leakage intensity curve diagram of a speaker according to some embodiments of this specification;

[0032] Fig.14 is a sound pressure level curve diagram of another speaker according to some embodiments of this specification;

[0033] Fig.15 is a cross-sectional schematic diagram of a loudspeaker in which the first elastic element has a hole according to some embodiments of this specification;

[0034] Fig.16 is a schematic longitudinal section diagram of a loudspeaker including two groups of resonance components according to some embodiments of the present specification;

[0035] Fig.17 is a schematic longitudinal sectional view of another loudspeaker including two groups of resonance components according to some embodiments of the present specification. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without paying creative work. It should be understood that these exemplary embodiments are given only to enable technicians in related fields to better understand and implement the present invention, and do not limit the scope of the present invention in any way. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0037] As shown in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular and may also include the plural, unless the context clearly indicates an exception. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment". The relevant definitions of other terms will be given in the following description. Below, without loss of generality, when describing the bone conduction related technology in the present invention, the description of "bone conduction speaker" or "bone conduction earphone" will be adopted. This description is only a form of bone conduction application. For ordinary technicians in this field, "speaker" or "earphone" can also be replaced by other similar words, such as "player", "hearing aid", etc.

[0038] Some embodiments of the present specification provide a speaker with a bone conduction sound function. The speaker is provided with a vibration reduction component, which can reduce the mechanical vibration intensity generated by the speaker during operation. The mechanical vibration mentioned here may refer to the vibration generated by the vibration shell of the speaker (for example, the vibration panel in contact with the user's facial skin, and the shell side panels, shell back panels, etc. connected thereto). In some cases, the mechanical vibration of the vibration shell in the low-frequency region is weakened by the vibration reduction component, which can weaken the vibration sense of the vibration shell in the low-frequency band, making the user more comfortable when wearing the speaker. In other cases, when the vibration intensity of the vibration shell is reduced, the sound leakage caused by the vibration of the vibration shell will also be improved, which can effectively improve the sound quality of the speaker and improve the user experience. The speaker in this specification may refer to a speaker that transmits sound by bone conduction (i.e., bone conduction) as one of the main ways. Exemplarily, when the speaker is working, the vibration shell of the speaker will vibrate mechanically, and the vibration 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 this specification, the speaker will be used as an example for description. It should be noted that the method of conducting sound through bones is not the only way for the speaker of this 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 component, that is, the speaker can include a speaker component and an air conduction speaker component at the same time, combining bone conduction and air conduction to transmit sound to the user. Among them, the air conduction speaker component can transmit vibration waves to the user's auditory nerve through the air, so that the user can hear the sound.

[0039] Figure 1 1 is a structural module diagram of a speaker according to some embodiments of this specification. Figure 1 As shown, the speaker 100 may include a vibration assembly 110 , a vibration reduction assembly 120 , and a fixing assembly 130 .

[0040] The vibration component 110 can generate mechanical vibrations. The generation of mechanical vibrations is accompanied by energy conversion, and the speaker 100 can use the vibration component 110 to realize the conversion of signals containing sound information into mechanical vibrations. The conversion process may include the coexistence and conversion of multiple different types of energy. For example, an electrical signal can be directly converted into mechanical vibrations through the transducer device in the vibration component 110. For another example, sound information can be contained in an optical signal, and a specific transducer device can realize the process of converting an optical signal into a vibration signal. Other types of energy that can coexist and convert during the operation of the transducer device include thermal energy, magnetic field energy, etc. The energy conversion method of the transducer device may include moving coil, electrostatic, piezoelectric, moving iron, pneumatic, electromagnetic, etc. The vibration component can transmit the generated mechanical vibration to the user's eardrum through the user's facial skin in a bone conduction manner, so that the user can hear the sound.

[0041] In some embodiments, the vibration assembly 110 may include a vibration element (e.g., vibration element 211) and a vibration housing (e.g., vibration housing 213) connected to the vibration element. The vibration element may generate mechanical vibrations, which may be transmitted to the vibration housing. The vibration housing may contact the user's facial skin and transmit the mechanical vibrations to the user's auditory nerve.

[0042] In some embodiments, the vibration element (or transducer device) may include a magnetic circuit component. The magnetic circuit component may provide a magnetic field. The magnetic field may be used to convert a signal containing sound information into a mechanical vibration signal. In some embodiments, the sound information may include a video or audio file having a specific data format or data or a file that can be converted into sound through a specific path. The signal containing sound information may come from the storage component of the speaker 100 itself, or from an information generation, storage or transmission system outside the speaker 100. The signal containing sound information may include a combination of one or more electrical signals, optical signals, magnetic signals, mechanical signals, etc. The signal containing sound information may come from one signal source or multiple signal sources. Multiple signal sources may be related or unrelated. In some embodiments, the speaker 100 may obtain a signal containing sound information in a variety of different ways, and the acquisition of the signal may be wired or wireless, and may be real-time or delayed. For example, the speaker 100 may receive an electrical signal containing sound information in a wired or wireless manner, or may directly obtain data from a storage medium to generate a sound signal. For another example, the speaker 100 may include a component with a sound collection function, which converts the mechanical vibration of the sound into an electrical signal by picking up the sound in the environment, and obtains an electrical signal that meets specific requirements after being processed by an amplifier. In some embodiments, the wired connection may include a metal cable, an optical cable, or a hybrid cable of metal and optical, for example, a coaxial cable, a communication cable, a flexible cable, a spiral cable, a non-metallic sheathed cable, a metal sheathed cable, a multi-core cable, a twisted pair cable, a ribbon cable, a shielded cable, a telecommunication cable, a two-strand cable, a parallel two-core conductor, a twisted pair, etc. The examples described above are only for convenience of explanation, and the medium of the wired connection may also be other types, for example, other transmission carriers of electrical signals or optical signals.

[0043] Wireless connection may include radio communication, free space optical communication, acoustic communication and electromagnetic induction, etc. Among them, radio communication may include IEEE802.11 series standards, IEEE802.15 series standards (such as Bluetooth technology and cellular technology, etc.), first generation mobile communication technology, second generation mobile communication technology (such as FDMA, TDMA, SDMA, CDMA, and SSMA, etc.), general packet radio service technology, third generation mobile communication technology (such as CDMA2000, WCDMA, TD-SCDMA, and WiMAX, etc.), fourth generation mobile communication technology (such as TD-LTE and FDD-LTE, etc.), satellite communication (such as GPS technology, etc.), near field communication (NFC) and other technologies running in ISM frequency band (such as 2.4GHz, etc.); free space optical communication may include visible light, infrared signals, etc.; acoustic communication may include sound waves, ultrasonic signals, etc.; electromagnetic induction may include near field communication technology, etc. The examples described above are only for the convenience of explanation, and the medium of wireless connection may also be other types, such as Z-wave technology, other paid civil radio frequency bands and military radio frequency bands, etc. For example, as some application scenarios of the present technology, the speaker 100 can obtain signals containing sound information from other devices through Bluetooth technology.

[0044] In some embodiments, the vibration housing may constitute a closed or non-closed accommodation space, and the vibration element may be disposed inside the vibration housing. In some embodiments, the vibration housing may include a vibration panel, a housing side panel connected to the vibration panel, and a housing back panel. For example, Figure 2 As shown, the vibration panel 2131, the shell side plate 2132 and the shell back plate 2133 can constitute a storage space, and the vibration element 211 can be arranged in the storage space. In some embodiments, the shell side plate 2132 and the shell back plate 2133 can be independent components. The shell side plate 2132 and the shell back plate 2133 can be connected physically or connected and fixed by other connecting structures. For example, the shell side plate 2132 and the shell back plate 2133 can be plate-like components that are formed separately and then connected together by bonding. In some embodiments, the shell side plate 2132 and the shell back plate 2133 can be different parts of the same structure, that is, there is no separated connection surface between the two. Exemplarily, the vibration shell 213 may include a hemispherical shell or a hemispherical shell and a vibration panel 2131 connected thereto. Among them, the hemispherical shell or the hemispherical shell may include a shell side plate 2132 and a shell back plate 2133, and the shell side plate 2132 and the shell back plate 2133 have no obvious boundary. For example, a portion connected to the vibration panel 2131 is called a shell side plate 2132, and the remaining portion can be called a shell back plate 2133.

[0045] The vibration panel 2131 may refer to a structure that contacts the user's facial skin. The vibration panel 2131 may be connected to the vibration element 211, and the mechanical vibration generated by the vibration element 211 may be transmitted to the user via the vibration panel 2131. Since the speaker of the present specification transmits sound mainly through bone conduction, and bone conduction transmits mechanical vibrations to the user through a component (e.g., the vibration panel 2131) that contacts the user's body (e.g., the user's facial skin), and transmits the mechanical vibrations to the user through the user's skin and bones to the user's auditory nerves so that the user can hear the sound. In some embodiments, the contact area between the vibration panel 2131 and the user's facial skin is at least greater than the preset contact area. In some embodiments, the preset contact area may be within 50mm. 2 ~1000mm 2 In some embodiments, the preset contact area can be 75mm 2 ~850mm 2 In some embodiments, the preset contact area can be within 100 mm 2 ~700mm 2 within the range.

[0046] In some embodiments, the vibration housing may not constitute a receiving space. In some embodiments, the vibration housing may only include a vibration panel that contacts the user's face without a housing side panel or a housing back panel. Fig.10 and Fig.11 In the illustrated embodiment, the vibration shell 1013 is a plate-like structure, and the plate-like vibration shell 1013 is directly connected to the vibration element 1011 and in contact with the user's facial skin. Therefore, in this embodiment, the vibration shell 1013 itself is equivalent to a vibration panel.

[0047] In some embodiments, the vibrating panel (e.g., Figure 2 The vibration panel 2131 shown in the figure can be in direct contact with the user's facial skin. In some embodiments, the outer side of the vibration panel of the speaker 100 can be wrapped with a vibration transfer layer, and the vibration transfer layer can be in contact with the user's facial skin. The vibration system composed of the vibration panel and the vibration transfer layer transfers the generated sound vibration to the user's facial skin through the vibration transfer layer. In some embodiments, a layer of vibration transfer layer is wrapped around the outer side of the vibration panel. In some embodiments, multiple layers of vibration transfer layers can be wrapped around the outer side of the vibration panel. In some embodiments, the vibration transfer layer can be made of one or more materials, and the material composition of different vibration transfer layers can be the same or different. In some embodiments, the multiple layers of vibration transfer layers can be superimposed on each other in the direction of the thickness of the vibration panel, or can be spread out and arranged in the horizontal direction of the vibration panel, or a combination of the above two arrangements. The area of ​​the vibration transfer layer can be set to different sizes. In some embodiments, the area of ​​the vibration transfer layer can be not less than 1cm2 In some embodiments, the area of ​​the vibration transmission layer may be no less than 2 cm 2 In some embodiments, the area of ​​the vibration transmission layer may be no less than 6 cm 2 .

[0048] In some embodiments, the vibration transmission layer can be composed of a material with certain adsorption, flexibility, and chemical properties. For example, plastic (including but not limited to high molecular polyethylene, blown nylon, engineering plastics, etc.), rubber, or other single or composite materials that can achieve the same performance. For the types of rubber, it includes but is not limited to general-purpose rubber and special-type rubber. General-purpose rubber may include but is not limited to natural rubber, isoprene rubber, styrene-butadiene rubber, butadiene rubber, chloroprene rubber, etc. Special-type rubber may include but is not limited to nitrile rubber, silicone rubber, fluororubber, polysulfide rubber, polyurethane rubber, epichlorohydrin rubber, acrylate rubber, propylene oxide rubber, etc. Among them, styrene-butadiene rubber may include but is not limited to emulsion polymerization styrene-butadiene rubber and solution polymerization styrene-butadiene rubber. For composite materials, it may 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. It can also be a composite of other organic and / or inorganic materials, for example, various types 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 silicone, polyurethane, and polycarbonate.

[0049] In some embodiments, the vibration element can be connected to any position of the vibration housing. Fig.12 In the embodiment shown, the vibration element 1211 can be directly connected to the vibration panel 12131. Figure 4 In the illustrated embodiment, the vibration element 411 may 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 transmitted to the user by the vibration panel 4131.

[0050] The vibration reduction assembly 120 can be connected to a vibration housing (e.g., Figure 4 The vibration shell 413 shown in the figure is connected to reduce the mechanical vibration intensity of the vibration shell. In some embodiments, the vibration reduction assembly 120 can be directly connected to the vibration panel of the vibration shell. For example, in Fig.10 In the illustrated embodiment, the vibration reduction assembly 1020 (the first elastic element 1021 of the vibration reduction assembly 1020) is connected to the vibration panel 12131. In some embodiments, the vibration reduction assembly 120 can be connected to other components of the vibration housing. Figure 4In the illustrated embodiment, the vibration reduction assembly 420 is connected to the housing back plate 4133 of the vibration housing 413 .

[0051] In some embodiments, the vibration reduction assembly 120 may include a first elastic element (eg, Figure 4 The first elastic element 421 shown in the figure). In some embodiments, the first elastic element may have a certain damping. In some cases, when the vibration shell vibrates, the first elastic element connected thereto may absorb the mechanical energy of the vibration shell and reduce the vibration amplitude of the vibration shell. In some embodiments, the damping of the first elastic element may be in the range of 0.005Ns / m to 0.5Ns / m. In some embodiments, the damping of the first elastic element may be in the range of 0.0075Ns / m to 0.4Ns / m. In some embodiments, the damping of the first elastic element may be in the range of 0.01Ns / m to 0.3Ns / m.

[0052] In some embodiments, the vibration reduction assembly 120 may include a first elastic element (eg, Figure 4 The first elastic element 421 shown in the figure) and the mass element connected to the first elastic element (for example, Figure 4 The mass element 423 shown in the figure). The mass element can form a resonant component 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 to absorb the mechanical energy of the vibrating shell and reduce the vibration intensity of the vibrating shell. For more details about the vibration reduction component, please refer to other embodiments of this specification (for example, Figure 4 The description of the embodiment shown in the figure) will not be repeated here.

[0053] As described in the above embodiments, the mass element and the first elastic element constitute a whole called a resonant component. In some embodiments, the vibration reduction component 120 may include one or more groups of resonant components. In some embodiments, the number of resonant components may be one group. For example, Figure 4 In the illustrated embodiment, the vibration reduction assembly 420 includes only one set of resonance assemblies, the first elastic element 421 of which is connected to the outer wall of the housing back plate 4133 of the vibration housing 413. In other embodiments, the number of the resonance assemblies may be at least two sets. Fig.16 In the illustrated embodiment, the vibration reduction assembly 1620 may include two groups of resonance components, and both groups of resonance components are disposed on the inner wall of the shell back plate 16133.

[0054] In some embodiments, when multiple groups of resonance components are disposed on the speaker 100 , factors such as the location of the resonance components, the connection method of each group of resonance components, and the resonance frequency of the resonance components may affect the vibration reduction effect of the vibration reduction component 120 .

[0055] In some embodiments, at least two groups of resonant components may be disposed inside the vibration housing and / or outside the vibration housing. For example, at least two groups of resonant components may both be disposed inside the vibration housing. Fig.16 In the illustrated embodiment, both groups of resonant components are connected to the inner wall of the housing back plate 16133. In another example, at least two groups of resonant components can be disposed outside the vibration housing. In yet another example, at least two groups of resonant components are disposed inside and outside the vibration housing, respectively. For example, some resonant components are disposed outside the vibration housing, and their first elastic elements are connected to the outer wall of the housing back plate, and other resonant components are disposed inside the vibration housing, and their first elastic elements are connected to the inner wall of the housing back plate.

[0056] In some embodiments, at least two groups of resonant components may be directly connected to the inner wall or outer wall of the vibration shell. For example, at least two groups of resonant components may be directly connected to the inner wall of the vibration shell by bonding, welding, integral molding, riveting, screw connection, etc. Fig.16 In the illustrated embodiment, the first elastic elements of the two groups of resonant components (e.g., the first elastic element 1621-1 and the first elastic element 1621-2) are directly connected to the inner wall of the housing back plate 16133. In another example, at least one of the at least two groups of resonant components can be connected to the other resonant components without being directly connected to the inner wall of the vibration housing. Fig.17 In the illustrated embodiment, there are two groups of resonant components (including a first resonant component 1720-1 and a second resonant component 1720-2), and the first resonant component 1720-1 is directly connected to the inner wall of the shell back plate 17133 (its first elastic element 1721-1 is connected to the inner wall of the shell back plate 17133). The first elastic element 1721-2 of the second resonant component 1720-2 is stacked on the first resonant component 1720-1 along the thickness direction of the first elastic element 1721-1 of the first resonant component 1720-1, and its first elastic element 1721-2 is connected to the mass element 1723-1 of the first resonant component 1720-1.

[0057] In some embodiments, when at least two groups of resonant components are disposed on the inner wall or the outer wall of the vibration housing, two adjacent groups of resonant components may be spaced apart by a preset distance. Fig.16In the illustrated embodiment, the vibration reduction assembly 1620 includes two groups of resonant assemblies (e.g., a first resonant assembly 1620-1 and a second resonant assembly 1620-2), and the first elastic elements of the two groups of resonant assemblies (e.g., a first elastic element 1621-1 and a first elastic element 1621-2) are directly connected to the inner wall of the shell back plate 16133, and the edges of the two first elastic elements are separated by a preset distance. In some embodiments, the preset distance may be in the range of 0.1 mm to 70 mm. In some embodiments, the preset distance may be in the range of 0.2 mm to 60 mm. In some embodiments, the preset distance may be in the range of 0.3 mm to 50 mm. In some embodiments, the resonant assembly may include a positioning member, and the positioning member may be fixedly disposed on the vibration shell to position the first elastic element so as to accurately mount the first elastic element on the vibration shell. Exemplarily, the positioning member may be an injection molded surround disposed on the vibration shell, and the plastic surround may position the edge of the first elastic element.

[0058] In some embodiments, at least two groups of resonant components may be identical or similar. Here, the identical or similar resonant components may refer to the same or similar mass unit, the first elastic element, and the resonant frequency of the resonant components. In other embodiments, at least two groups of resonant components may also be different. For example, in Fig.16 In the illustrated embodiment, the sizes of the first elastic elements and the mass elements of the two groups of resonant components are significantly different.

[0059] In some embodiments, the resonant frequencies of at least two groups of resonant components may be different. In some cases, when the resonant frequencies of the groups of resonant components are different, the groups of resonant components may produce a vibration reduction effect in a frequency band near their respective resonant frequencies. Figure 4 Based on the embodiment shown, the vibration reduction component 420 also includes another group of resonance components (also including a mass element and a first elastic element), whose resonance frequency is about 300 Hz, and the resonance component can effectively absorb the mechanical energy of the vibration shell 413 in the range of 250 Hz to 350 Hz. The resonance frequency of the original resonance component (i.e., the resonance component composed of the mass element 423 and the first elastic element 421) is the second frequency f0, which can effectively absorb the mechanical energy of the vibration shell 413 in the low frequency region (such as 100 Hz to 200 Hz). Therefore, the two groups of resonance components of the vibration reduction component 420 can absorb the mechanical energy of the vibration shell 413 in two frequency bands, effectively widening the frequency band of the vibration absorption of the vibration reduction component 420.

[0060] In other embodiments, the resonant frequencies of the resonant components of each group may be the same or similar. When the resonant frequencies of the resonant components are the same or similar, the vibration reduction effect in the frequency band near the corresponding resonant frequency may be enhanced. Figure 4Based on the embodiment shown, the vibration reduction component 420 also includes another group of resonance components (including a mass element and a first elastic element). The resonance frequency of this group of resonance components is the same as or similar to the original resonance component (i.e., the resonance component composed of the mass element 423 and the first elastic element 421). For example, the resonance frequencies of the two groups of resonance components are both the second frequency f0, which is equivalent to enhancing the vibration reduction effect of the vibration reduction component 420 in the frequency band near the second frequency f0.

[0061] In some embodiments, the vibration assembly 110 may further include a second elastic element (eg, Figure 2 The second elastic element 215 is shown in the figure. The second elastic element can connect the vibration element to the vibration shell. The mechanical vibration generated by the vibration element can be transmitted to the vibration shell via the second elastic element, thereby causing the vibration of the vibration panel. For more details about the second elastic element, please refer to other embodiments of this specification (for example, Figure 2 The description of the embodiment shown in the figure) will not be repeated here.

[0062] The fixing component 130 can play a role in fixing and supporting the vibration component 110 and the vibration reduction component 120, so as to keep the speaker 100 in stable contact with 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 vibration reduction component 120. In some embodiments, binaural wearing can be achieved through the fixing component 130. For example, the two ends of the fixing component 130 may be fixedly connected to two groups of vibration components 110 (or vibration reduction components 120) respectively. When the user wears the speaker 100, the fixing component 130 may fix the two groups of vibration components 110 (or vibration reduction components 120) near the left and right ears of the user respectively. In some embodiments, the fixing component 130 may also achieve single-ear wearing. For example, the fixing component 130 may be fixedly connected to only one group of vibration components 110 (or vibration reduction components 120). When the user wears the speaker 100, the fixing component 130 may fix the vibration component 110 (or vibration reduction component 120) near the ear on one side of the user. In some embodiments, the fixing component 130 may be glasses, for example, any combination of one or more of sunglasses, augmented reality glasses (VR), virtual reality glasses (AR), helmets, and headbands, which are not limited here.

[0063] The above description of the structure of the speaker 100 is only a specific example and should not be regarded as the only feasible implementation scheme. Obviously, for professionals in this field, after understanding the basic principle of the speaker, it is possible to make various modifications and changes in form and details to the specific methods and steps of implementing the speaker 100 without deviating from this principle, but these modifications and changes are still within the scope of the above description. For example, the speaker 100 may include one or more processors, and the processor may execute one or more sound signal processing algorithms. The sound signal processing algorithm can modify or enhance the sound signal. For example, the sound signal is subjected to noise reduction, acoustic feedback suppression, wide dynamic range compression, automatic gain control, active environment recognition, 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 processing, and these modifications and changes are still within the scope of protection of the claims of the present invention. For another example, the speaker 100 may include one or more sensors, such as a temperature sensor, a humidity sensor, a speed sensor, a displacement sensor, etc. The sensor can collect user information or environmental information.

[0064] Figure 2 is a schematic longitudinal section diagram of a loudspeaker without a vibration reduction component according to some embodiments of this specification. Figure 2 As shown, the speaker 200 may include a vibration component 210 and a fixing component 230 .

[0065] In some embodiments, the vibration assembly 210 may 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 may convert a sound signal into a mechanical vibration signal and thereby generate mechanical vibration. The mechanical vibration generated by the vibration element 211 may be transmitted to the vibration housing 213 connected thereto through the second elastic element 215, and the vibration housing 213 may 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.

[0066] The vibration element 211 described in this specification may 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 may include a magnetic circuit component and a coil, and the magnetic circuit component may be used to form a magnetic field, and the coil may vibrate mechanically in the magnetic field. Specifically, a signal current may be passed through the coil, and the coil is in the magnetic field formed by the magnetic circuit component, and is acted upon by the Ampere force, and is driven to generate mechanical vibrations. At the same time, the magnetic circuit component is subjected to a reaction force opposite to the coil. Under the action of the Ampere force, the vibration element 211 may generate mechanical vibrations. And the mechanical vibration of the vibration element 211 may be transmitted to the vibration housing 213, so that the vibration housing 213 also vibrates accordingly.

[0067] In some embodiments, the vibration housing 213 may include a vibration panel 2131, a housing side plate 2132, and a housing back plate 2133. The vibration panel 2131 may also be referred to as a housing panel, and both may refer to the component of the vibration housing 213 that contacts the user's facial skin. The housing 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 housing back plate 2133 are respectively arranged on the two end surfaces of the housing side plate 2132. The vibration panel 2131, the housing side plate 2132, and the housing back plate 2133 may form a shell-like structure with a certain accommodation space. The vibration element 211 may be arranged inside the shell-like structure.

[0068] In some embodiments, the vibration panel 2131 and the housing side plate 2132 may be directly connected. For example, the vibration panel 2131 and the housing side plate 2132 may be connected by bonding, riveting, welding, screw connection, integral molding, etc. In some embodiments, the vibration panel 2131 and the housing side plate 2132 may be connected by a connector.

[0069] In some embodiments, the vibration panel 2131 and the housing side plate 2132 may be rigidly connected. For example, the vibration panel 2131 and the housing side plate 2132 are connected by welding, riveting, etc., and the vibration panel 2131 and the housing side plate 2132 are rigidly connected after the connection. In some embodiments, the vibration panel 2131 and the housing side plate 2132 may be elastically connected. For example, the vibration panel 2131 and the housing side plate 2132 are connected by elastic members (e.g., springs, foam, glue, etc.), and the vibration panel 2131 and the housing side plate 2132 are elastically connected after the connection. In some embodiments, the connector may have a certain elasticity to reduce the mechanical vibration intensity transmitted to the housing side plate and the housing back plate through the connector, and reduce the sound leakage caused by the vibration of the vibration housing. The elasticity of the connector is determined by the material, thickness, structure, etc. of the connector. In some embodiments, whether the vibration panel 2131 and the housing side plate 2132 are rigidly connected or elastically connected can be determined according to actual conditions. For example, it can be determined based on the connection between the vibration element 211 and the vibration housing 213. Figure 4 In the embodiment shown, when the vibration element 411 is connected to the housing side plate 4132, the vibration panel 4131 and the housing side plate 4132 may be rigidly connected. Fig.12 In the illustrated embodiment, the vibration element 1211 is connected to the vibration panel 12131 , and the vibration panel 12131 and the shell side plate 2132 may be elastically connected.

[0070] The materials of the connector include but are 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 weight polyethylene, blown nylon, engineering plastics, etc.), and other single or composite materials that can achieve the same performance. Composite materials include but are not limited to reinforcing materials such as glass fiber, carbon fiber, boron fiber, graphite fiber, graphene fiber, silicon carbide fiber or aramid fiber. The material constituting the connector may also be a composite of other organic and / or inorganic materials, for example, various types of glass fiber reinforced plastics composed of glass fiber reinforced unsaturated polyester, epoxy resin or phenolic resin matrix.

[0071] In some embodiments, the thickness of the connector may be no less than 0.005 mm. In some embodiments, the thickness of the connector may be between 0.005 mm and 3 mm. In some embodiments, the thickness of the connector may be between 0.01 mm and 2 mm. In some embodiments, the thickness of the connector may be between 0.01 mm and 1 mm. In some embodiments, the thickness of the connector may be between 0.02 mm and 0.5 mm.

[0072] In some embodiments, the structure of the connector can be set to be annular, and the annular connector can be formed into different shapes. Exemplarily, the connector may include at least one circular ring. In another example, the connector may include at least two circular rings, which may be concentric circular rings or non-concentric circular rings, and the circular rings are connected by at least two struts, and the struts radiate from the outer ring to the center of the inner ring. In some embodiments, the connector may include at least one elliptical circular ring. Exemplarily, the connector may include at least two elliptical circular rings, different elliptical circular rings have different radii of curvature, and the circular rings are connected by struts. In some embodiments, the connector may include at least one square ring. In some embodiments, the connector structure may also be set to be sheet-shaped. Exemplarily, a hollow pattern may be set on a sheet-shaped connector. In some embodiments, the area of ​​the hollow pattern is not less than the area of ​​the non-hollow part of the connector. It is worth noting that the material, thickness, and structure of the connector in the above description can be combined into different connectors in any way. In some embodiments, the annular connector may have different thickness distributions. For example, the strut thickness may be equal to the ring thickness. For another example, the strut thickness may be greater than the ring thickness. For another example, the connecting member may include at least two circular rings, which are connected by at least two support rods, and the support rods radiate from the outer ring to the center of the inner ring, and the thickness of the inner ring is greater than the thickness of the outer ring. In this embodiment, due to the vibration element 211 and the shell side plate 2132, the source of the mechanical vibration generated by the vibration panel 2131 is the mechanical energy transmitted from the shell side plate 2132. In order to ensure that the vibration panel 2131 has a sufficiently large mechanical vibration intensity to ensure that the user's auditory nerve receives a higher volume, the vibration panel 2131 and the shell side plate 2132 can be set to be rigidly connected.

[0073] In some embodiments, the vibration panel 2131, the housing side plate 2132, and the housing back plate 2133 may be made of the same or different materials. For example, the vibration panel 2131 and the housing side plate 2132 may be made of the same material, while the material of the housing back plate 2133 may be different from the former two. In some embodiments, the vibration panel 2131, the housing side plate 2132, and the housing back plate 2133 may be made of different materials.

[0074] In some embodiments, the materials for making the vibration panel 2131 include, but are not limited to, 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 (PVC), polyethylene (PE), polymethyl methacrylate (PMMA), polyether-ether-ketone (PEEK), phenolic resin (PF), urea formaldehyde resin (UF), melamine formaldehyde resin (MEL), polyvinyl chloride (PVC), polyurethanes (PU), polyvinylidene chloride (PEE ... polyvinyl chloride (PVC), polyvinyl chloride (PVC), polyvinyl chloride (PU), polyvinyl chloride (PVC), polyvinyl chloride (PU), polyvinyl chloride (PEEK), polyvinyl chloride (PVC), polyvinyl chloride (PVC), polyvinyl chloride (PU), polyvinyl chloride (PEEK), polyvinyl chloride (PVC), polyvinyl chloride (PVC), polyvinyl chloride (PU), polyvinyl chloride (PEEK), polyvinyl chloride (PVC), polyvinyl chloride (PVC), polyvinyl chloride (PU), polyvinyl chloride (PEEK), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (PEN), polyvinyl chloride (P formaldehyde, MF) and some metals, alloys (such as aluminum alloys, chrome-molybdenum steel, scandium alloys, magnesium alloys, titanium alloys, magnesium-lithium alloys, nickel alloys, etc.), any material in glass fiber or carbon fiber, or a combination of any of the above materials. In some embodiments, the material for making the vibration panel 2131 is any combination of glass fiber, carbon fiber and polycarbonate (Polycarbonate, PC), polyamide (Polyamides, PA) and other materials. In some embodiments, the material for making the vibration panel 2131 can be a mixture of carbon fiber and polycarbonate (Polycarbonate, PC) in a certain proportion. In some embodiments, the material for making the vibration panel 2131 can be a mixture of carbon fiber, glass fiber and polycarbonate (Polycarbonate, PC) in a certain proportion. In some embodiments, the material for making the vibration panel 2131 can be a mixture of glass fiber and polycarbonate (Polycarbonate, PC) in a certain proportion, or glass fiber and polyamide (Polyamides, PA) can be mixed in a certain proportion.

[0075] In some embodiments, the vibration panel 2131 needs to have a certain thickness to ensure its rigidity. In some embodiments, the thickness of the vibration panel 2131 may be not less than 0.3mm. In some embodiments, the thickness of the vibration panel 2131 may be not less than 0.5mm. In some embodiments, the thickness of the vibration panel 2131 may be not less than 0.8mm. In some embodiments, the thickness of the vibration panel 2131 may be not less than 1mm. As the thickness increases, the weight of the vibration housing 213 will also increase, thereby increasing the deadweight of the speaker 200, causing the sensitivity of the speaker 200 to be affected. Therefore, the thickness of the vibration panel 2131 should not be too large. In some embodiments, the thickness of the vibration panel 2131 may not exceed 2.0mm. In some embodiments, the thickness of the vibration panel 2131 may not exceed 1.5mm.

[0076] In some embodiments, the relevant parameters of the vibration panel 2131 may also include the relative density, tensile strength, elastic modulus, Rockwell hardness, etc. of the material used to make the vibration panel 2131. In some embodiments, the relative density of the vibration panel material may be between 1.02 and 1.50. In some embodiments, the relative density of the vibration panel material may be between 1.14 and 1.45. In some embodiments, the relative density of the vibration panel material may be between 1.15 and 1.20. In some embodiments, the tensile strength of the vibration panel material may be no less than 30 MPa. In some embodiments, the tensile strength of the vibration panel material may be between 33 MPa and 52 MPa. In some embodiments, the tensile strength of the vibration panel material may be no less than 60 MPa. In some embodiments, the elastic modulus of the vibration panel material may be between 1.0 GPa and 5.0 GPa. In some embodiments, the elastic modulus of the vibration panel material may be between 1.4 GPa and 3.0 GPa. In some embodiments, the elastic modulus of the vibration panel material may be between 1.8 GPa and 2.5 GPa. In some embodiments, the hardness (Rockwell hardness) of the vibration panel material may be between 60 and 150. In some embodiments, the hardness of the vibration panel material may be between 80 and 120. In some embodiments, the hardness of the vibration panel material can be between 90 and 100. In some embodiments, considering the relative density and tensile strength of the vibration 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.

[0077] 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, a rectangle, a nearly rectangular shape (for example, the four corners of the rectangle are replaced with arc-shaped structures), an ellipse, a circle, or any other shape.

[0078] In some embodiments, the vibration panel 2131 may be made of the same material. In some embodiments, the vibration panel 2131 may be formed by laminating two or more materials. In some embodiments, the vibration panel 2131 may be composed of a layer of material with a larger Young's modulus and an additional layer of material with a smaller Young's modulus. This has the advantage of ensuring the rigidity requirements of the vibration panel 2131 while also increasing the comfort of contact with the human face and improving the degree of fit between the vibration panel 2131 and the human face. In some embodiments, the material with a larger Young's modulus can be acrylonitrile butadiene styrene (ABS), polystyrene (PS), high impact polystyrene (HIPS), polypropylene (PP), polyethylene terephthalate (PET), polyester (PES), polycarbonate (PC), polyamide (PA), polyvinyl chloride (PVC), polyurethanes (PU), polyvinylidene chloride (PVC), polyethylene (PE), polymethyl methacrylate (PMMA), polyether-ether-ketone (PEEK), phenolic resin (PF), urea formaldehyde resin (UF), melamine formaldehyde resin (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.), any material in glass fiber or carbon fiber, or a combination of any of the above materials.

[0079] In some embodiments, the vibration panel 2131 may 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 may be the entire area or a portion of the area of ​​the vibration panel 2131. For example, the vibration panel 2131 is an arc-shaped structure, and only a portion of the area of ​​the arc-shaped structure is in contact with the user's facial skin. In some embodiments, the vibration panel 2131 may 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 may be a plane. In some embodiments, the outer surface of the vibration panel 2131 may have some protrusions or pits. In some embodiments, the outer surface of the vibration panel 2131 may be a curved surface of any contour.

[0080] In some embodiments, the vibration panel 2131 may be in indirect contact with the user's facial skin. For example, the vibration panel 2131 may be provided with the vibration transfer layer in the aforementioned embodiments, and the vibration transfer layer may be interposed between the vibration panel 2131 and the user's facial skin, replacing the vibration panel 2131 in contact with the user's facial skin.

[0081] It should be noted that since the vibration element 211 includes a magnetic circuit component, and the vibration element 211 is contained in the vibration shell 213. Therefore, when the volume of the vibration shell 213 (that is, the volume of the accommodating space) is larger, the vibration shell 213 can accommodate a larger magnetic circuit component, so that the speaker 200 has a higher sensitivity. The sensitivity of the speaker 200 can be reflected by the volume generated by the speaker 200 when a certain sound signal is input. When the same sound signal is input, the louder the volume generated by the speaker 200, the higher the sensitivity of the speaker 200. In some embodiments, the volume of the speaker 200 increases as the volume of the accommodating space of the vibration shell 213 increases. Therefore, this specification also has certain requirements for the volume of the vibration shell 213. In some embodiments, in order to make the speaker 200 have a higher sensitivity (volume), the volume of the vibration shell 213 can be 2000mm 3 ~6000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 2000 mm 3 ~5000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 2800 mm 3 ~5000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 3500 mm 3 ~5000mm 3 In some embodiments, the volume of the vibration housing 213 can be between 1500 mm 3 ~3500mm3 In some embodiments, the volume of the vibration housing 213 can be between 1500 mm 3 ~2500mm 3 between.

[0082] In some embodiments, the fixing component 230 is fixedly connected to the vibration shell 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, avoid shaking of the speaker 200, and ensure that the vibration panel 2131 can stably transmit sound. In some embodiments, the fixing component 230 can be an arc-shaped elastic component that can form a force that rebounds toward the middle of the arc so that it can be in stable contact with the human skull. Taking the ear hook as the fixing component 230 as an example, in Figure 2 On the basis of the above, the top point p of the ear hook fits well with the human head, and the top point p can be considered as a fixed point. The ear hook is fixedly connected to the shell side panel 2132, and the fixed connection method includes using glue to bond and fix, or fixing the ear hook to the shell side panel 2132 or the shell back panel 2133 by means of snap-on, welding or threaded connection. The part of the ear hook connected to the vibration shell 213 can be made of the same, different or partially the same material as the shell side panel 2132 or the shell back panel 2133. In some embodiments, in order to make the ear hook have a smaller stiffness (i.e., a smaller stiffness coefficient), the ear hook can also include plastic, silicone and / or metal materials. For example, the ear hook can include an arc-shaped titanium wire. In some embodiments, the ear hook can be integrally formed with the shell side panel 2132 or the shell back panel 2133. For more examples of the vibration assembly 210 and the vibration housing 213, please refer to the PCT applications with application numbers PCT / CN2019 / 070545 and PCT / CN2019 / 070548 filed on January 5, 2019, the entire contents of which are incorporated into this application by reference.

[0083] As mentioned above, 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 (for example, 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, and finally the vibration panel 2131 vibrates. When the vibration panel 2131 generates mechanical vibration, it contacts the facial skin of the wearer (or user), and transmits the mechanical vibration to the auditory nerve via the bone in a bone conduction manner, so that the user can hear the sound.

[0084] 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 to 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 to the vibration element 211 (for example, the magnetic circuit component of the vibration element 211), and the second portion of the second elastic element 215 can be connected to the inner wall of the vibration housing 213.

[0085] In some embodiments, the second elastic element 215 may be a vibration transmission plate. The first portion of the vibration transmission plate may be connected to the vibration element 211, and the second portion of the vibration transmission plate may be connected to the vibration shell 213. Specifically, the first portion of the vibration transmission plate may be connected to the magnetic circuit component of the vibration element 211, and the second portion of the vibration transmission plate may be connected to the inner wall of the vibration shell 213. Optionally, the vibration transmission plate has an annular structure, and the first portion of the vibration transmission plate is closer to the central area of ​​the vibration transmission plate than the second portion. For example, the first portion of the vibration transmission plate may be located in the central area of ​​the vibration transmission plate, while the second portion is located on the peripheral side of the vibration transmission plate.

[0086] In some embodiments, the vibration transmission piece may be an elastic member, and the elasticity of the vibration transmission piece may be determined by the material, thickness, structure, etc. of the vibration transmission piece.

[0087] In some embodiments, the materials used to make the vibration sensor include, but are not limited to, plastics (e.g., but not limited to high molecular weight polyethylene, blown nylon, engineering plastics, etc.), steel (e.g., but not limited to stainless steel, carbon steel, etc.), lightweight alloys (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 may 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, for example, various types of glass fiber reinforced unsaturated polyester, epoxy resin or phenolic resin matrix.

[0088] In some embodiments, the vibration transmission sheet may have a certain thickness. In some embodiments, the thickness of the vibration transmission sheet may be not less than 0.005 mm. In some embodiments, the thickness of the vibration transmission sheet may be between 0.005 mm and 3 mm. In some embodiments, the thickness of the vibration transmission sheet may be between 0.01 mm and 2 mm. In some embodiments, the thickness of the vibration transmission sheet may be between 0.01 mm and 1 mm. In some embodiments, the thickness of the vibration transmission sheet may be between 0.02 mm and 0.5 mm.

[0089] In some embodiments, the elasticity of the vibration transmission plate can be provided by the structure of the vibration transmission plate. For example, the vibration transmission plate can be an elastic structure, and even if the stiffness of the material used to make the vibration transmission plate is high, the elasticity can be provided by its structure. In some embodiments, the structure of the vibration transmission plate can include but is not limited to a spring-like structure, a ring-shaped or ring-like structure, etc. In some embodiments, the structure of the vibration transmission plate can also be set to be sheet-shaped. In some embodiments, the structure of the vibration transmission plate can also be set to be strip-shaped. The specific structure of the vibration transmission plate can be combined based on the materials, thicknesses, and structures described above to form different vibration transmission plates. For example, a sheet-shaped vibration transmission plate can have different thickness distributions, and the thickness of the first part of the vibration transmission plate is greater than the thickness of the second part of the vibration transmission plate. In some embodiments, the number of vibration transmission plates can be one or more. For example, the number of vibration transmission plates can be two, and the second parts of the two vibration transmission plates are respectively connected to the inner walls of two opposite shell side plates 2132, and the first parts of the two vibration transmission plates are connected to the vibration element 211.

[0090] In some embodiments, the vibration transmitter can be directly connected to the vibration shell 213 and the vibration element 211. Exemplarily, the vibration transmitter can be connected to the vibration element 211 and the vibration shell 213 by adhesive. In other examples, the vibration transmitter can also be fixed to the vibration element 211 and the vibration shell 213 by welding, clamping, riveting, threaded connection (for example, connected by screws, screws, screws, bolts and other components), clamp connection, pin connection, wedge key connection, and one-piece molding. For more examples of vibration transmitters, please refer to the PCT applications with application numbers PCT / CN2019 / 070545 and PCT / CN2019 / 070548 filed on January 5, 2019, all of which are incorporated into this application by reference.

[0091] In some embodiments, the vibration assembly 210 may further include a first vibration transmission connector. The vibration transmission piece may be connected to the vibration element 211 via the first vibration transmission connector. In some embodiments, the first vibration transmission connector may be fixedly connected to the vibration element 211, such as Figure 2 As shown. For example, the first vibration-transmitting connecting member can be fixed to the surface of the vibration element 211. In some embodiments, the first portion of the vibration element 211 can be fixedly connected to the first vibration-transmitting connecting member. In some embodiments, the vibration-transmitting plate can also be fixed to the first vibration-transmitting connecting member by welding, clamping, riveting, threaded connection (for example, connection by screws, screws, screws, bolts and other components), clamp connection, pin connection, wedge key connection, or one-piece molding.

[0092] In some embodiments, the vibration assembly 210 may further include a second vibration-transmitting connector, which may be fixed to the inner wall of the vibration housing 213. For example, the second vibration-transmitting connector may be fixed to the inner wall of the housing side plate 2132. The vibration-transmitting plate may be connected to the vibration housing 213 via the second vibration-transmitting connector. In some embodiments, the second portion of the vibration element 211 may be fixedly connected to the second vibration-transmitting connector. The connection method between the second vibration-transmitting connector and the vibration-transmitting plate may be the same as or similar to the connection method between the first vibration-transmitting connector and the vibration-transmitting plate in the aforementioned embodiment, and will not be described in detail here.

[0093] Figure 3 It is a partial frequency response curve diagram of a speaker without adding a vibration reduction component according to some embodiments of this specification. Among them, the horizontal axis is the frequency, and the vertical axis is the vibration intensity (or vibration amplitude) of the speaker 200. The vibration intensity mentioned here can also be understood as the vibration acceleration of the speaker 200. The larger the value on the vertical axis, the larger the vibration amplitude of the speaker 200, which also indicates that the vibration sense of the speaker 200 is stronger. For the convenience of description, in some embodiments, the sound frequency range below 500Hz can be called the low-frequency area, the sound frequency range of 500Hz to 4000Hz can be called the medium-frequency area, and the sound frequency range greater than 4000Hz can be called the high-frequency area. In some embodiments, the sound in the low-frequency area will bring a more obvious vibration feeling to the user. If a very sharp peak appears in the low-frequency area (that is, the vibration acceleration of certain frequencies is much higher than the vibration acceleration of other nearby frequencies), on the one hand, the sound heard by the user will be harsh and sharp, and on the other hand, the strong vibration sense will also bring an uncomfortable feeling. Therefore, in the low-frequency area, it is not desirable to have very sharp peaks and valleys. The flatter the frequency response curve, the better the sound effect of the speaker 200.

[0094] like Figure 3 As shown, the speaker 200 generates a low-frequency resonance peak in the low-frequency region (near 100 Hz). For the sake of convenience of description, it can be regarded that the speaker 200 generates a first resonance peak at the first frequency. The low-frequency resonance peak can be understood as being generated by the joint action of the vibration component 210 and the fixing component 230. The vibration acceleration of the low-frequency resonance peak is large, resulting in a strong vibration of the vibration panel 2131, which may cause the user to feel pain on the face when wearing the speaker 200, affecting the user's comfort and experience.

[0095] Figure 4 is a schematic longitudinal section diagram of a loudspeaker with a vibration reduction component added according to some embodiments of this specification. Figure 4 As shown, the speaker 400 includes a vibration component 410 and a vibration reduction component 420 .

[0096] In some embodiments, the vibration assembly 410 may include a vibration element 411, a vibration housing 413, and a second elastic element 415. The vibration housing 413 may 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 undergoes mechanical vibration, the mechanical vibration may be transmitted to the housing side plate 4132 via the second elastic element 415, and then transmitted to the vibration panel 4131 and the housing back plate 4133 via the housing side plate 4132, causing 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 respectively the same or similar to the vibration element 211, the vibration housing 213, and the second elastic element 215 in the speaker 200, and the details of their structures are not repeated here.

[0097] In some embodiments, the vibration reduction assembly 420 may 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 may be connected to the vibration housing 413 through the first elastic element 421. The vibration housing 413 may transmit mechanical vibration to the mass element 423 through the first elastic element 421, driving the mass element 423 to perform mechanical vibration. When the mass element 423 generates mechanical vibration, the vibration acceleration of the vibration housing 413, that is, the vibration intensity, may be weakened, thereby reducing the vibration sense of the vibration housing 413 and improving the user experience.

[0098] In some embodiments, the first elastic element 421 may be connected to any other position of the vibration housing 413 except the vibration panel 4131. For example, the first elastic element 421 may be connected to the housing side plate 4132 or the housing back plate 4133. Figure 4 In the example shown, the first elastic element 421 may be connected to the outer wall of the shell back plate 4133 .

[0099] Figure 5 is a partial frequency response curve diagram of a speaker with a vibration reduction component added according to some embodiments of this specification. In addition, Figure 5 The frequency response curve of the resonant component (composed of the first elastic element and the mass element) is also shown. Figure 5 It can be seen that, under the influence of the resonance component, the frequency response curve of the speaker 400 in the low-frequency region becomes flatter, avoiding the strong vibration caused by the sharp low-frequency resonance peak and improving the user experience.

[0100] Figure 6is 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., a whole consisting of a mass element and a first elastic element), the mechanical model of the loudspeaker can be equivalent to: Figure 6 Model shown. For the convenience of analysis and explanation, the vibration shell and the vibration element can be simplified into mass m1 and mass m2, the fixed component (for example, the ear hook) can be simplified into the elastic connector k1, and the second elastic element can be simplified into the elastic connector k2. The damping of the elastic connector k1 and the elastic connector k2 are R1 and R2 respectively. The vibration shell and the vibration element are respectively subjected to the Ampere force F and the reaction force –F of the Ampere force to generate vibration. The composite vibration system consisting of the vibration shell, the vibration element, the second elastic element and the fixed component is fixed at the top point p of the ear hook.

[0101] Figure 7 is a simplified mechanical model diagram of a loudspeaker with a resonant component added according to some embodiments of this specification. Figure 6 Similarly, for ease of understanding, when the loudspeaker includes a resonant component (composed of a mass element and a first elastic element), the mechanical model of the loudspeaker can be equivalent to: Figure 7 The model shown. Figure 7 As shown, m1 and m2 can represent the mass of the vibration shell and the vibration element respectively, m3 represents the mass of the mass element in the resonance component, k1 and R1 represent the elasticity and damping of the fixed component (for example, ear hook), 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, and the vibration shell and the vibration element are vibrated by the forces F and –F respectively. When the resonance component is added, it is equivalent to increasing the stiffness and damping of the vibration shell. At the same time, the Ampere force F does not change, and the reaction force -F of the Ampere force does not change either. Therefore, the addition of the resonance component can reduce the vibration amplitude of the vibration shell.

[0102] In some embodiments, the vibration component 410 and the resonance component can each generate a low-frequency resonance peak at a specific frequency in the low-frequency region, and the resonance component can absorb the mechanical vibration of the vibration housing 413 to achieve the purpose of reducing the mechanical vibration amplitude of the vibration housing 413 at its low-frequency resonance peak. Figure 5As shown, the curve "without resonant component" represents the frequency response of the loudspeaker 400 when the resonant component is not added. It can be seen that the vibration component 410 (combined with the fixing component 430) can generate a first resonant peak 450 at a first frequency f. The curve "with resonant component-resonant component" represents the frequency response of the resonant component itself. It can be seen that the resonant component can generate a second resonant peak 460 at a second frequency f0. The curve "with resonant component-loudspeaker" represents the frequency response of the loudspeaker 400 generated by the interaction between the vibration component 410 and the resonant component. It can be seen that the frequency response of the loudspeaker 400 with the added resonant component in the low frequency region (for example, 100Hz to 200Hz) is higher than that of the loudspeaker without the added resonant component (for example, Figure 2 The frequency response of the loudspeaker 200 shown in the figure is flatter in the low-frequency region, and its amplitude near the first frequency f (ie, the frequency corresponding to the first resonance peak 450) is significantly lower than the amplitude when no resonance component is added.

[0103] In some exemplary application scenarios, the mechanical vibration generated by the vibration element 411 can be transmitted to the vibration shell 413 through the second elastic element 415, so that the vibration shell 413 is forced to vibrate, so the vibration frequency of the vibration shell 413 is the same as the vibration frequency of the vibration element 411. Similarly, the vibration shell 413 transmits the mechanical vibration to the mass element 423 of the resonant component through the first elastic element 421, causing the mass element 423 to be forced to move. Therefore, the vibration frequency of the mass element 423 is the same as the vibration frequency of the vibration shell 413. Figure 5 It can be known from the change rule of the frequency response curve of the resonance component itself that, in the range from 100Hz to the second frequency f0 (i.e., the frequency corresponding to the second resonance peak 460), the vibration acceleration of the resonance component increases as the frequency increases. When the frequency is the second frequency f0, the second resonance peak 460 appears. When the frequency exceeds the second frequency f0 and continues to increase, the vibration acceleration of the resonance component decreases as the frequency increases. The frequency response curve of the resonance component can reflect the response of the resonance component to vibrations of different frequencies in the outside world (i.e., the vibration of the vibration shell 413). For example, in the frequency range at and near the second frequency f0, the resonance component will absorb more vibration energy from the vibration shell 413. The benefit brought about by this is that the resonance component mainly reduces the vibration of the vibration shell 413 near the low frequency band (for example, the frequency corresponding to the first resonance peak 450), and has almost no effect or little effect on the vibration of the vibration shell 413 near the non-low-frequency resonance peak and its vicinity, which ultimately makes the frequency response curve of the speaker 400 flatter and the sound quality better.

[0104] In some embodiments, the first frequency f is the natural frequency of the vibration component 410 (combined with the fixing component 430), and the second frequency f0 is the natural frequency of the resonant component. In some embodiments, the natural frequency is related to the material, mass, elastic coefficient, shape and other factors of the structure itself.

[0105] In some embodiments, in order to allow the resonance component to effectively weaken the vibration intensity of the first resonance peak 450 of the vibration shell 413, the second frequency f0 corresponding to the second resonance peak 460 of the resonance component can be set near the first frequency f corresponding to the first resonance peak 450 of the vibration shell 413. 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.

[0106] In order to broaden the frequency response range of the loudspeaker 400, the low-frequency resonance peaks (e.g., the first resonance peak 450 and the second resonance peak 460) of the vibration component 410 and the resonance component can be controlled at a lower frequency position by changing the structure and material. In some embodiments, the first resonance peak 450 and the second resonance peak 460 can be controlled in the low-frequency region. In some embodiments, the first frequency f and the second frequency f0 can be both less than 800 Hz. In some embodiments, the first frequency f and the second frequency f0 can be both less than 700 Hz. In some embodiments, the first frequency f and the second frequency f0 can be both less than 600 Hz. In some embodiments, the first frequency f and the second frequency f0 can be both less than 500 Hz.

[0107] In some embodiments, by controlling the structure and material of the resonance component (for example, controlling the mass of the mass element 423, the elastic coefficient of the first elastic element 421, etc.), it can be made so that when the vibration shell 413 transmits the vibration to the resonance component, the resonance component generates a vibration with a larger amplitude than the vibration shell 413. For example, in at least a partial frequency range less than (or greater than) the first frequency f, the amplitude of the vibration of the resonance component can be greater than the amplitude of the vibration of the vibration shell 413. In some embodiments, the fixing component 430 can be connected to the vibration shell 413. Since the resonance component is not in direct contact with the user, the large-amplitude vibration of the resonance component does not make the user feel uncomfortable vibration. In some embodiments, since the amplitude of the resonance component is large, the mass element 423 in the resonance component can be designed as a structure with a large area. When the resonance component vibrates, the vibration of the large-area mass element 423 can drive the air to vibrate, generating low-frequency air-conducted sound, thereby enhancing the low-frequency response of the speaker 400. For example, the mass element 423 can be set as a plate-like component (such as a circular plate, a square plate, etc.), and the plate-like component can drive the air to vibrate when vibrating, thereby generating air-conducted sound.

[0108] See also Figure 5 In some embodiments, under the interaction between the vibration shell 413 and the resonance component, the speaker 400 can generate a trough 472 in the low frequency region (approximately 150 Hz to 200 Hz), and the vibration acceleration of the trough 472 is less than the vibration acceleration of the first resonance peak 450. And due to the formation of the trough 472, the peak value of the vibration acceleration of the speaker 400 is also reduced. Figure 5 It can be seen that the speaker 400 has two vibration acceleration peaks, and both vibration acceleration peaks are smaller than the vibration acceleration of the first resonance peak 450. The above content shows that the speaker 400 with the added resonance component is better than the speaker without the added resonance component (for example, Figure 2 For the speaker 200 shown in the figure, not only a lower trough of vibration acceleration is produced, but also a smaller peak value of vibration acceleration is made, which means that the vibration sense of the vibration shell 413 in the low-frequency area is weaker, which makes the user have a better experience when wearing the speaker 400.

[0109] In some embodiments, the speaker 400 can produce a trough in a frequency range of less than 450 Hz. In some embodiments, the speaker 400 can produce a trough in a frequency range of less than 400 Hz. In some embodiments, the speaker 400 can produce a trough in a frequency range of less than 350 Hz. In some embodiments, the speaker 400 can produce a trough in a frequency range of less than 300 Hz. In some embodiments, the speaker 400 can produce a trough in a frequency range of less than 200 Hz.

[0110] In some exemplary application scenarios, since the mass of the resonant component is mainly provided by the mass element 423, when the mass m3 of the mass element 423 is very small so that the ratio of the mass m3 of the mass element 423 to the mass m1 of the vibration shell 413 is too small, the resonant component has little effect on the amplitude of the mechanical vibration of the vibration shell 413, resulting in the inability to effectively reduce the mechanical vibration near the first resonance peak 450 of the vibration shell 413. For example, if the ratio of the mass m3 of the mass element 423 to the mass m1 of the vibration shell 413 is too small, the effect of the resonant component on the vibration amplitude of the vibration shell 413 can be ignored, resulting in the vibration acceleration of the first resonance peak 450 of the vibration shell 413 is still large, and the vibration sense of the speaker 400 cannot be effectively reduced.

[0111] In other exemplary application scenarios, when the mass m3 of the mass element 423 is so large that the ratio of the mass m3 of the mass element 423 to the mass m1 of the vibration housing 413 is too large, the resonance component has a great influence on the amplitude of the mechanical vibration of the speaker 400, which will significantly change the frequency response of the speaker 400. Therefore, the mass m3 of the mass element 423 of the resonance component needs to be controlled within a certain range.

[0112] In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant component to the mass m1 of the vibration shell 413 may be in the range of 0.04 to 1.25. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant component to the mass m1 of the vibration shell 413 may be in the range of 0.05 to 1.2. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant component to the mass m1 of the vibration shell 413 may be in the range of 0.06 to 1.1. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant component to the mass m1 of the vibration shell 413 may be in the range of 0.07 to 1.05. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant component to the mass m1 of the vibration shell 413 may be in the range of 0.08 to 0.9. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonant component to the mass m1 of the vibration shell 413 may be in the range of 0.09 to 0.75. In some embodiments, the ratio of the mass m3 of the mass element 423 of the resonance assembly to the mass m1 of the vibration housing 413 may be in the range of 0.1 to 0.6.

[0113] In some embodiments, the material of the mass element 423 may include but is not limited to plastic, metal, composite materials, etc. In some embodiments, the mass element 423 may be an independent structure. In some embodiments, the mass element 423 may be combined with other components of the speaker 400 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 with the diaphragm. In the composite diaphragm structure, the mass element 823 can include at least one of a paper cone, an aluminum sheet, a copper sheet, etc. In some embodiments, the speaker 400 can also include a functional element, and the mass element 423 can be connected to the functional element as a composite structure for combination. In other embodiments, the mass element 423 itself can be a functional element. The functional element mentioned here can refer to a component used to realize 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, etc.

[0114] In some embodiments, the mass element 423 may be a plate-like structure, a block-like structure, a spherical structure, a columnar structure, a conical structure, a strip-like structure, or any other possible structure, or a combination thereof. For example, the mass element 923 may be a circular plate-like structure. In another example, Fig. 9 As shown, the mass element 923 can be a groove member, and the groove member can be a square groove (the groove cross-section shape is square) or a circular groove (the groove cross-section shape is circular). Based on the above content, the specific shape and structure of the mass element of this specification can be designed according to actual needs.

[0115] Figure 8 is a schematic longitudinal section diagram of a loudspeaker in which the first elastic element is a diaphragm according to some embodiments of this specification. Figure 8 As shown, the speaker 800 may include a vibration component 810 and a vibration reduction component 820. The vibration component 810 may generate mechanical vibrations, and the vibration component 810 may contact the user's facial skin, and transmit the mechanical vibrations to the user's auditory nerves through the user's facial skin in a bone conduction manner. The vibration reduction component 820 may reduce the vibration sensation brought to the user when the vibration component vibrates.

[0116] In some embodiments, the vibration assembly 810 may include a vibration element 811, a vibration housing 813, and a second elastic element 815. The vibration element may generate mechanical vibrations according to an electrical signal. The vibration element 811 may be elastically connected to the vibration housing 813 through the second elastic element 815. When the vibration element 811 undergoes mechanical vibration, the mechanical vibration may be transmitted to the vibration housing 813 via the second elastic element 815 to drive the vibration housing 813 to perform mechanical vibrations, thereby transmitting the vibrations to the user's facial skin, and enabling the user to hear the sound through the user's facial skin in a bone conduction manner.

[0117] In some embodiments, the vibration housing 813 may include a vibration panel 8131, a housing side panel 8132, and a housing back panel 8133. In some embodiments, the vibration element 811, the vibration panel 8131, and the second elastic element 815 are respectively the same or similar to the vibration element 211, the vibration panel 2131, and the second elastic element 215 in the speaker 200, and the details of their structures are not repeated here.

[0118] In some embodiments, the vibration reduction assembly 820 may include a resonance assembly consisting of a first elastic element 821 and a mass element 823. The mass element 823 may be elastically connected to the vibration housing 813 (the housing side plate 8132 of the vibration housing 813) through the first elastic element 821. The vibration housing 813 transmits vibration to the mass element 823 through the first elastic element 821, so that the mechanical vibration of the vibration housing 813 is partially absorbed by the mass element 823, thereby reducing the vibration amplitude of the vibration housing 813.

[0119] like Figure 8 As shown, the vibration reduction assembly 820 can be accommodated in the vibration shell 813, and the vibration reduction assembly 820 can be connected to the inner wall of the shell side plate 8132 through the first elastic element 821. In some embodiments, the first elastic element 821 may include a diaphragm. The peripheral side of the diaphragm can be connected to the inside of the shell side plate 8132 of the vibration shell 813 through a supporting structure or directly connected. The shell side plate 8132 is a side wall arranged around the vibration panel 8131. When the vibration shell 813 vibrates, the shell side plate 8132 can cause the vibration of the diaphragm. Since the diaphragm here relies on being connected to the vibration shell 813 and vibrates through the drive of the vibration shell 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.

[0120] 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 be used as a weight element to adjust the mass of the diaphragm system, ensure that the diaphragm system as a whole is within a certain mass range, so that the diaphragm itself has a larger vibration amplitude, and can effectively reduce the vibration amplitude of the speaker 800 in the low-frequency region; (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 rigidity, and the composite diaphragm surface is not easy to produce high-order modes, avoiding the frequency response of the passive diaphragm to have more peaks and valleys.

[0121] In some embodiments, the type of mass element 823 may include, but is not limited to, one or a combination of a paper cone, an aluminum sheet, or a copper sheet. In some embodiments, the mass element 823 may be made of the same material. For example, the composite structure may be a paper cone or an aluminum sheet. In some embodiments, the mass element 823 may be made of different materials. For example, the mass element 823 may be a structure composed of a paper cone and a copper sheet. For another example, the mass element 823 may be a structure composed of a mixture of aluminum or copper in a certain proportion.

[0122] In some embodiments, the method of connecting the mass element 823 to the diaphragm may include but is not limited to bonding with glue, or welding, clamping, riveting, threaded connection (screws, screws, bolts, etc.), interference connection, clamp connection, pin connection, wedge key connection, and one-piece molding connection.

[0123] In some exemplary application scenarios, when the diaphragm vibrates, it may cause the air in the vibration shell 813 to vibrate. In some embodiments, a sound outlet hole 840 may be provided 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 the form of air conduction, so that the user can hear the sound. In some cases, due to the presence of the vibration reduction component 820, the mechanical vibration intensity of the vibration panel 8131 may be weakened, resulting in a decrease in the volume of the speaker 800 in the low-frequency region, and this part of the sound led out by the sound outlet hole 840 can enhance the response of the speaker 800 in the low-frequency region, so that the speaker 800 can still maintain a certain volume when the low-frequency vibration sense weakens.

[0124] In some embodiments, the sound outlet 840 can be opened at any position of the vibration housing 813. In some embodiments, the sound outlet 840 can be set on the side of the vibration housing 813 facing away from the user's face, that is, on the housing back plate 8133. In some embodiments, the sound outlet 840 can also be opened on the housing side plate 8132, for example, at a position on the housing side plate 8132 facing the user's ear canal. In other embodiments, the sound outlet 840 can also be opened at the corner of the vibration housing 813, for example, at the connection between the housing side plate 8132 and the housing back plate 8133. In some embodiments, the number of sound outlets 840 can be multiple. Multiple sound outlets 840 can be opened at different positions. For example, a part of the multiple sound outlets 840 can be opened on the housing back plate 8133, and another part can be opened on the housing side plate 8132. In some embodiments, at least a part of the sound derived through the sound outlet 840 can be guided to the user's ear, improving the low-frequency response of the speaker 800. In some embodiments, the above purpose can be achieved by setting the sound outlet 840 at a position facing the user's ear. For example, when the user wears the speaker 800, the shell side panel 8132 faces the user's ear, so the sound outlet hole 840 can be set on the shell side panel 8132, and the sound is exported through the sound outlet hole 840 and at least a part of it can be guided to the user's ear. In some embodiments, an additional sound guiding structure can be provided to achieve the above purpose. For example, a sound conduit can be set at the outlet of the sound outlet hole 840, and the sound is guided to the user's ear through the sound conduit. In some embodiments, the cross-sectional shape of the sound outlet hole 840 may include but is not limited to a circle, a square, a triangle, a polygon, etc.

[0125] In some embodiments, the speaker 800 may further include a fixing assembly 830, which may be fixedly connected to the vibration housing 813 (e.g., the housing side plate 8132 of the vibration housing 813). The fixing assembly 830 may be used to maintain a stable contact between the speaker 800 and the face of the user (e.g., the wearer), prevent the speaker 800 from shaking, and ensure that the speaker 800 stably transmits sound.

[0126] In some embodiments, when the rigidity of the fixing assembly 830 is smaller (i.e., the stiffness coefficient is smaller), the low-frequency response of the speaker 800 at the first resonance peak 450 is more obvious (i.e., the vibration acceleration is greater, and the sensitivity of the speaker 800 is higher), and the sound quality of the speaker 800 is better. On the other hand, when the rigidity of the fixing assembly 830 is smaller (i.e., the stiffness coefficient is smaller), it is more conducive to reducing the vibration of the vibration housing 813.

[0127] In some embodiments, the fixing assembly 830 can be an ear hook. The two ends of the fixing assembly 830 can be connected to a vibration shell 813 respectively, and the two vibration shells 813 are fixed to the two sides of the user's skull in the form of ear hooks. At this time, the speaker is a binaural speaker. In some embodiments, the fixing assembly 830 can be a single ear ear clip. The fixing assembly 830 can be connected to a vibration shell 813 separately, and the vibration shell 813 is fixed to one side of the user's skull. The structure of the fixing assembly 830 can be the same or similar to the fixing assembly (for example, the fixing assembly 230) in other embodiments in this specification, and will not be repeated here.

[0128] Fig. 9 FIG. 1 is a schematic longitudinal section diagram of a loudspeaker in which the mass element is a groove member according to some embodiments of this specification. Fig. 9 As shown, the speaker 900 may include a vibration component 910, a vibration reduction component 920 and a fixing component 930. The vibration component 910 may include a vibration element 911, a vibration housing 913 and a second elastic element 915. The second elastic element 915 is used to elastically connect the vibration element 911 and the vibration housing 913 so as to transmit the mechanical vibration of the vibration element 911 to the vibration housing 913. The vibration housing 913 contacts the facial skin of the user and transmits the mechanical vibration to the auditory nerve of the user. The vibration reduction component 920 can reduce the vibration feeling brought to the user when the vibration housing 913 generates mechanical vibration. The fixing component can be fixedly connected to the resonance component 920.

[0129] In some embodiments, the vibration element 911, the vibration shell 913, and the second elastic element 915 are respectively the same as or similar to the vibration element 411, the vibration shell 413, and the second elastic element 415 in the speaker 400, and the details of their structures are not repeated here.

[0130] The vibration reduction assembly 920 may include a mass element 923 and a first elastic element 921. The mass element 923 may be elastically connected to the vibration housing 913 via the first elastic element 921. Fig. 9 As shown, the vibration reduction assembly 920 can be connected to the outer wall of the housing back plate 9133 through the first elastic element 921. When the vibration housing 913 vibrates mechanically, the resonance assembly formed by the mass element 923 and the first elastic element 921 can absorb part of the mechanical energy of the vibration housing 913, thereby reducing the vibration amplitude of the vibration housing 913.

[0131] Unlike the speaker 400, the mass element 923 of the vibration reduction assembly 920 is a groove member. The vibration housing 913 can be at least partially accommodated in the groove member. In some embodiments, the groove cross-sectional shape of the groove member can be circular, square, polygonal, etc. In some embodiments, the groove cross-sectional shape of the groove member can match the outer contour of the vibration housing 913 so that the vibration housing 913 can be accommodated therein. For example, if the outer contour of the vibration housing 913 is a rectangular parallelepiped, the groove cross-sectional shape of the groove member can be a corresponding square. In some embodiments, the vibration housing 913 can be completely accommodated in the groove of the groove member. In some embodiments, the vibration housing 913 can be partially accommodated in the groove of the groove member. For example, the vibration panel 9131 of the vibration housing 913 and at least a portion of the housing side panel 9132 can be located outside the groove to facilitate the vibration panel 9131 to contact the user's facial skin to transmit vibration.

[0132] In some embodiments, the first elastic element 921 may include a first portion and a second portion. The first portion of the first elastic element is connected to the vibration housing. The first portion of the first elastic element 921 is connected to the inner wall of the groove member. Fig. 9 In the illustrated embodiment, the first portion of the first elastic element 921 is connected to the outer wall of the housing back plate 9133, and the second portion of the first elastic element 921 is connected to the inner side wall of the groove member. For another example, the first portion of the first elastic element may be connected to the outer wall of the housing side plate, and the second portion of the first elastic element may be connected to the inner bottom wall of the groove member. In some alternative embodiments, the vibration housing 913 may only include a vibration panel 9131 and a housing side plate 9132 connected thereto, without a housing back plate 9133. In this case, the mass element 923 may be connected to the inner wall and / or outer wall of the housing side plate 9132 through the first elastic element 921.

[0133] In some specific embodiments, the first elastic element 921 may be an annular structure, the first portion of the first elastic element 921 may be located in the central region of the annular structure, and the second portion may be located on the circumference of the annular structure. In some alternative embodiments, the first elastic element may be a spring. The two ends of the spring are respectively used as the first portion and the second portion to connect the vibration housing and the groove member.

[0134] In some embodiments, the first elastic element 921 can be directly connected to the housing back plate 9133 and the groove member, for example, by welding, bonding, integral molding, etc. The first elastic element 921 can be connected to the housing back plate 9133 and the groove member through a connector. For example, a third connector can be fixedly provided on the housing back plate 9133, and the first portion of the first elastic element 921 can be fixedly connected to the third connector. A fourth connector can be fixedly provided on the groove member, and the second portion of the first elastic element 921 can be fixedly connected to the fourth connector.

[0135] In some embodiments, the inner size of the groove member can be larger than the outer size of the vibration housing 913. In this case, 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 be driven to vibrate and generate sound. At the same time, a sound outlet channel 940 can be formed between the groove member and the outer wall of the vibration housing 913. For example, Fig. 9 In the illustrated embodiment, there is a gap between the side wall of the groove member and the housing side plate 9132, and the gap can serve as a sound outlet channel 940. The sound generated 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 has the effect of enhancing the low frequency and increasing the volume to a certain extent.

[0136] In some embodiments, the fixing assembly 930 can be used to keep the speaker 900 in contact with the user's facial skull. In some embodiments, the fixing assembly 930 can be fixedly connected to the resonance assembly 920. For example, the fixing assembly 930 can be fixedly connected or integrally formed with the mass element 921 (e.g., a groove member). In some embodiments, the fixing assembly 930 can be directly fixedly connected to the groove member. In some embodiments, the fixing assembly 930 can also be connected to the groove member through a fixed connector.

[0137] 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 to a groove member and a vibration shell 913 accommodated in the groove member, and the two groove members are respectively fixed on both sides of the skull in the form of ear hooks. In some embodiments, the fixing assembly 930 can be a single-ear ear clip. The fixing assembly 930 can be connected to a groove member and a vibration shell 913 accommodated in the groove member separately, and the groove member is fixed to one side of the human skull. The structure of the fixing assembly 930 can be the same or similar to the fixing assembly in other embodiments of the present application (for example, the fixing assembly 830), which will not be repeated here.

[0138] In some embodiments, more details about the mass element 923 and the resonant frequency of the resonant component 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.

[0139] It should be noted that the foregoing one or more embodiments are for illustrative purposes only and are not intended to limit the shape or number of the speaker 900. After fully understanding the principle of the speaker 900, the speaker 900 can be deformed to obtain a speaker 900 that is different from the embodiment of this specification. For example, the shape of the mass element can be changed. For another example, the material used to make 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 shell back plate 9133, and the groove member is adhered to the vibration shell 913 by glue. In some embodiments, the glue can have a certain damping so as to further absorb the vibration energy of the vibration shell 913 and reduce the vibration amplitude.

[0140] Fig.10 is a schematic longitudinal section diagram of another loudspeaker with a vibration reduction component added according to some embodiments of this specification, Fig.11 yes Fig.10 A schematic longitudinal section diagram of the loudspeaker from another angle is shown. Fig.10 and Fig.11 As shown, the speaker 1000 may include a vibration component 1010, a vibration reduction component 1020 and a fixing component 1030. The vibration component 1010 may include a vibration element 1011, a vibration housing 1013 and a second elastic element 1015 (eg, Fig.11 ). The second elastic element 1015 is used to elastically connect the vibration element 1011 and the vibration housing 1013. In some embodiments, the vibration element 1011, the second elastic element 1015 and the fixing assembly 1030 are respectively the same or similar to the vibration element 411, the second elastic element 415 and the fixing assembly 430 in the speaker 400, and the details of their structures are not repeated here.

[0141] Unlike the loudspeaker in the aforementioned embodiment (e.g., loudspeaker 400), the vibration housing 1013 may be a separate plate-like or plate-like structure, which directly contacts the user's facial skin to transmit vibration, so the vibration housing 1013 itself is equivalent to the vibration panel in the aforementioned embodiment. The vibration housing 1013 does not define a storage space, and the vibration element 1011 and the second elastic element 1015 are directly connected to the vibration housing 1013. The mass element 1023 may be a groove member, and the mass element 1023 has a groove that can be used as a storage space, and at least a portion of the vibration assembly 1010 can be accommodated in the space formed by the mass element 1023. The first elastic element 1021 can connect the mass element 1023 to the vibration housing 1013.

[0142] like Fig.11 As shown, the vibration element 1011 may include a magnetic circuit component. A coil is disposed on the vibration housing 1013 , and a magnetic circuit component is disposed around the coil. The second elastic element 1015 connects the magnetic circuit component with the vibration housing 1013 .

[0143] In some embodiments, the second elastic element 1015 may be a vibration transmission sheet. In some embodiments, the vibration transmission sheet may be a ring-shaped structure. Fig.11 As shown, the vibration transmission piece of the ring structure is arranged around the vibration shell 1013, the peripheral side of the ring-shaped vibration transmission piece is connected to the magnetic circuit component, and the middle part of the ring-shaped vibration transmission piece is connected to the vibration shell 1013. When mechanical vibration occurs under the action of Ampere force, the vibration shell 1013 can transmit the vibration to the mass element 1023 through the first elastic element 1021, thereby causing the mass element 1023 to vibrate, and finally achieve the effect of reducing the vibration amplitude of the vibration component 1010. For more details about the vibration transmission piece, please refer to Figure 2 The description is omitted here.

[0144] In some cases, by improving the speaker as described in the above 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, reducing the vibration sense felt by the skin when the user wears the speaker, and effectively improving the user experience.

[0145] In addition, the speaker may leak sound during operation. The sound leakage mentioned here means that during the operation of the speaker, the vibration of the speaker will generate sound that is transmitted to the surrounding environment. In addition to the wearer of the speaker, other people in the environment may also hear the sound emitted by the speaker. There are many reasons for the leakage of sound, including the vibration of the vibration element (for example, the transducer) being transmitted to the vibration shell through the second elastic element, causing the vibration of the vibration shell. Or the vibration of the vibration panel is transmitted to the vibration shell through the connecting member, causing the vibration of the vibration shell. Alternatively, the vibration of the vibration element causes the air in the vibration shell to vibrate, and the sound generated by the air vibration is discharged from the shell through the sound outlet hole opened on the shell, thereby causing sound leakage.

[0146] It should be noted that the sound leakage of the speaker is related to the mechanical vibration of the vibration shell. In some cases, when the mechanical vibration intensity of the vibration shell is greater, the sound leakage of the speaker is more serious. The smaller the mechanical vibration intensity of the vibration shell, the relatively weaker the sound leakage of the speaker. Therefore, when one or more of the aforementioned embodiments reduces the mechanical vibration intensity of the vibration shell by the vibration reduction component, the sound leakage of the speaker will also be improved. In some embodiments, the vibration intensity of the vibration shell can be reduced by the vibration reduction component, thereby weakening the sound leakage of the speaker. The vibration reduction component may be the same or similar to the description in one or more of the aforementioned embodiments. In some embodiments, the vibration reduction component may include a first elastic element, which has a certain damping, so that the first elastic element can absorb the mechanical energy of the vibration shell (for example, the shell side plate and the shell back plate), reduce the vibration intensity of the vibration shell, and weaken the sound leakage of the speaker. In some embodiments, the vibration reduction component may include a first elastic element and a mass element at the same time, and the mechanical vibration is transmitted to the mass element by the first elastic element to cause the vibration of the mass element to achieve the purpose of absorbing the mechanical energy of the vibration shell.

[0147] Fig.12 1 is a cross-sectional schematic diagram of a speaker in which a vibration reduction assembly is arranged inside a vibration housing according to some embodiments of the specification. Fig.12 As shown, the speaker may include a vibration component 1210 and a vibration reduction component 1220. The vibration component 1210 may include a vibration element 1211 and a vibration housing 1213 connected to the vibration element 1211. The vibration element 1211 may generate mechanical vibration and transmit the mechanical vibration to the vibration housing 1213 to vibrate the vibration housing 1213. The vibration housing 1213 contacts the user's facial skin and transmits the vibration to the user's auditory nerve in a bone conduction manner.

[0148] like Fig.12As shown, the vibration housing 1213 may include a vibration panel 12131, a housing side plate 12132, and a housing back plate 12133. The housing back plate 12133 is arranged opposite to the vibration panel 12131, and the housing side plate 12132 is connected between the housing back plate 12133 and the vibration panel 12131. The vibration panel 12131 may contact the user's facial skin.

[0149] In some embodiments, the vibration panel 12131 and the housing side plate 12132 can be directly connected, for example, by bonding, welding, riveting, nailing, integral molding, etc. In other embodiments, the vibration panel 12131 and the housing side plate 12132 can be connected by a connector. In some embodiments, the vibration panel 12131 and the housing side plate 12132 can be elastically connected to reduce the mechanical vibration intensity 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 vibration panel 12131 and the housing side plate 12132 can be rigidly connected. In this embodiment, since the vibration element 1211 is directly connected to the vibration panel 12131, the mechanical vibration generated by the vibration element 1211 can be directly transmitted to the user via the vibration panel 12131. Therefore, the vibration panel 12131 and the shell side plate 12132 can be elastically connected to reduce the mechanical energy received by the shell side plate 12132 and the shell back plate 12133, thereby reducing the sound leakage caused by the vibration of the shell side plate 12132 and the shell back plate 12133.

[0150] In this embodiment, the vibration element 1211 is connected to the vibration panel 12131, and transmits the mechanical vibration to the vibration panel 12131. The vibration panel 12131 transmits the mechanical vibration to the housing side plate 12132 and the housing back plate 12133, causing both to vibrate. Therefore, during the operation of the speaker 1200, the vibration housing 1213 will continue to vibrate, and the vibration of the vibration housing 1213 will cause air vibration, thereby causing sound leakage.

[0151] The vibration reduction assembly 1220 includes a first elastic element 1221 and a mass element 1223. The mass element 1223 is connected to the housing side plate 12132 and the housing back plate 12133 through the first elastic element 1221. Similar to the above-mentioned embodiment, when the vibration housing 1213 vibrates, the mechanical vibration of the vibration housing 1213 can be transmitted to the mass element 1223 via the first elastic element 1221, thereby causing the mass element 1223 to vibrate. The vibration reduction assembly 1220 can absorb the mechanical energy of the vibration housing 1213 (mainly the housing back plate 12133 and the housing side plate 12132) in a specific frequency band, thereby reducing the vibration amplitude of the vibration housing 1213 and reducing the sound leakage caused by the vibration. The specific range of the specific frequency band is related to factors such as 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 in which the resonance assembly absorbs vibration can be adjusted by changing the elastic coefficient of the resonance assembly and the mass of the resonance assembly.

[0152] In some embodiments, the frequency range of the vibration absorbed by the resonance component can be adjusted by adjusting the type, hardness, thickness of the first elastic element 1221 and the contact area with the vibration shell 1213.

[0153] Exemplarily, taking glue as the first elastic element, in some embodiments, the Shore hardness of the glue may be in the range of 10 to 80. In some embodiments, the Shore hardness of the glue may be in the range of 20 to 60. In some embodiments, the Shore hardness of the glue may be in the range of 25 to 55. In some embodiments, the Shore hardness of the glue may be in the range of 30 to 50.

[0154] After the glue is applied to 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.

[0155] In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 may account for 1% to 98% of the surface area of ​​the inner wall of the shell back plate 12133. In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 may account for 5% to 90% of the surface area of ​​the inner wall of the shell back plate 12133. In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 may account for 10% to 60% of the surface area of ​​the inner wall of the shell back plate 12133. In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 may account for 20% to 40% of the surface area of ​​the inner wall of the shell back plate 12133. In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 may account for 10mm 2 ~200mm 2 In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 can be between 20mm 2 ~190mm 2 In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 can be 30mm 2 ~180mm 2 In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 can be 40mm 2 ~170mm 2 In some embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 can be 50mm 2 ~150mm 2 In some specific embodiments, the bonding area between the glue layer and the inner wall of the shell back plate 12133 can be 10mm 2 .

[0156] Fig.13 is a sound leakage intensity curve diagram of a speaker according to some embodiments of this specification. Fig.13 The sound leakage intensity curve of the speaker 200 without the vibration reduction component (i.e., the dotted line in the figure) and the sound leakage intensity curve of the speaker 1200 with the vibration reduction component 1220 added (i.e., the solid line in the figure) are respectively shown. In some embodiments, the vibration reduction component may only include a mass element. The mass element may be a vibration shell (i.e., Fig.13 The inner shell inside the shell). Fig.13It can be known that under the influence of the vibration reduction component 1220, the sound leakage intensity of the speaker 1200 near 10000Hz (for example, in the range of 10000Hz to 10300Hz) is significantly reduced. In this embodiment, the first elastic element 1221 of the vibration reduction component 1220 is glue with a Shore hardness of 30 to 50. The thickness of the glue layer formed on the inner wall of the shell back plate 12133 is between 50μm and 150μm. The bonding area between the glue layer and the inner wall of the shell back plate 12133 is 150mm 2 .

[0157] In addition to reducing the sound leakage of the speaker 1200 in the high-frequency region (for example, 10000HZ~10300Hz), the vibration reduction component 1220 of the present specification can also reduce the sound leakage of the conductive speaker 1200 in other frequency bands. In some embodiments, foam can be selected as the first elastic element 1221, and the elasticity and damping of the foam can be changed by adjusting its thickness, so that the frequency band of the sound leakage reduction can be controlled in the medium and low frequency region. In some embodiments, the thickness of the foam can be between 0.3mm and 2mm. In some embodiments, the thickness of the foam can be between 0.4mm and 1.9mm. In some embodiments, the thickness of the foam can be between 0.5mm and 1.8mm. In some embodiments, the thickness of the foam can be between 0.6mm and 1.8mm.

[0158] Fig.14 is a sound pressure level curve diagram of another speaker according to some embodiments of the present specification. Fig.14 The sound pressure level curves of the speaker 1200 with the vibration reduction component 1220 using the foam with a thickness of 0.6 mm as the first elastic element 1221, the sound pressure level curve of the speaker 1200 with the vibration reduction component 1220 using the foam with a thickness of 1.2 mm as the first elastic element 1221, the sound pressure level curve of the speaker 1200 with the vibration reduction component 1220 using the foam with a thickness of 1.8 mm as the first elastic element 1221, and the sound pressure level curve of the speaker 200 without the vibration reduction component 1220 are shown respectively. Among them, the ordinate SPL (Sound Pressure Level) represents the sound pressure level, which can be equivalent to the mechanical vibration intensity of the speaker 1200, that is, the larger the value of the ordinate in the graph, the greater the mechanical vibration intensity of the speaker 1200. Since the mechanical vibration of the speaker 1200 mainly comes from the vibration of the vibration shell 1213, the value of the ordinate can also represent the mechanical vibration intensity of the vibration shell 1213.

[0159] Depend on Fig.14 It can be seen that compared with the case without adding a resonant component (in Fig.12In the illustrated embodiment, the vibration reduction component 1220 may be equivalent to a resonance component. For the speaker 1200, the vibration intensity of the speaker 1200 in a specific frequency band is reduced by adding a resonance component using foam with thicknesses of 0.6 mm, 1.2 mm, and 1.8 mm as the first elastic element 1221. Exemplarily, when the thickness of the foam of the vibration reduction component 1220 of the speaker 1200 is 0.6 mm, the vibration intensity of the speaker 1200 is reduced in a frequency range of about 180 Hz to 1010 Hz, and a trough occurs at a frequency of about 1000 Hz (the minimum vibration intensity in the frequency range of 180 Hz to 1010 Hz). In another example, when the thickness of the foam of the vibration reduction component 1220 of the speaker 1200 is 1.2 mm, the vibration intensity of the speaker 1200 is reduced in a frequency range of about 170 Hz to 750 Hz, and a trough occurs at a frequency of about 650 Hz (the minimum vibration intensity in the frequency range of 170 Hz to 750 Hz). In another example, when the thickness of the foam of the vibration reduction component 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 occurs at a frequency of about 300 Hz (the minimum vibration intensity in the frequency range of 160 Hz to 350 Hz). As the vibration intensity is reduced, the sound leakage generated by the speaker 1200 during operation is also reduced.

[0160] It should be noted that the aforementioned one or more embodiments are for illustrative purposes only and are not intended to limit the shape or number of the speaker 1200. After fully understanding the principle of reducing sound leakage of the speaker 1200, the speaker 1200 can be deformed to obtain a speaker 1200 that is different from the embodiment of this specification. For example, the vibration reduction assembly 1220 can be transformed with reference to the aforementioned embodiment. In some embodiments, the vibration reduction assembly 1220 may include only the first elastic element 1221, but not the mass element 1223. Exemplarily, the first elastic element 1221 itself may have a certain damping, so that it can absorb and consume the energy of the vibration 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 the purpose of reducing sound leakage can also be achieved.

[0161] Fig.15 FIG. 1 is a cross-sectional schematic diagram of a speaker in which the first elastic element has a hole according to some embodiments of this specification. Fig.15As shown, the speaker 1500 may include a vibration component 1510 and a vibration reduction component 1520. The vibration component 1510 may include a vibration element 1511 (e.g., a transducer) that generates mechanical vibrations and a vibration housing 1513 that contacts the user's facial skin. The vibration reduction component 1520 is connected to 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 panel 15131), the vibration element 1511, and the mass element 1523 in the speaker 1500 are the same or similar to the vibration housing 1213 (including the housing side plate 12132, the housing back plate 12133, and the housing panel 12131), the vibration element 1211, and the mass element 1223 in the speaker 1200, and are not repeated here.

[0162] Unlike the speaker 1200, the first elastic element 1521 of the speaker 1500 is not completely connected to the mass element 1523. The incomplete connection mentioned here may refer to a free space between the contact surface of the mass element 1523 and the first elastic element 1521. Or a filler may be provided in the first elastic element 1521. Explanation is given by way of example. In some embodiments, the first elastic element 1521 has a pore 15211 on one side facing away from the housing back plate 15133. Due to the presence of the pore 15211, when the mass element 1523 is connected to the first elastic element 1521, a free space is left between the contact surface 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, so that the first elastic element 1521 can still provide sufficiently low elasticity when the thickness is relatively thin, so that the resonant frequency of the resonant component composed of the first elastic element 1521 and the mass element 1523 can be easily adjusted to the required frequency band. In some alternative embodiments, the pores 15211 can be arranged inside the first elastic element 1521. In other embodiments, the pores 15211 are arranged on the surface and inside of the first elastic element 1521. In some embodiments, the pores 15211 can be formed by opening holes in the first elastic element 1521. For example, the first elastic element 1521 is plastic, and the pores 15211 can be formed by opening holes on the surface and / or inside of the plastic. In other embodiments, the pores 15211 can be the structure of the first elastic element 1521 itself. For example, the first elastic element 1521 may be foam, which itself has a pore structure, and the pore structure may be directly used as the pore 15211. In some embodiments, a filler may be provided in the pore 15211. An exemplary filler may be a damping filler, such as a damping glue, a damping grease, etc. In some cases, providing a damping filler in the pore 15211 may increase the damping of the first elastic element 1521. When the speaker 1500 is working, the first elastic element 1521 may further dissipate the vibration energy of the vibration housing 15133, reduce the vibration amplitude of the vibration housing 15133, and reduce sound leakage.

[0163] Fig.16 is a cross-sectional schematic diagram of a loudspeaker including two groups of resonant components according to some embodiments of this specification. Fig.16As shown, the speaker 1600 may include a vibration component 1610 and a vibration reduction component 1620. The vibration component 1610 may include a vibration element 1611 (e.g., a transducer) that generates mechanical vibrations and a vibration housing 1613 that contacts the user's facial skin. The vibration reduction component 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 the sound leakage caused by the vibration of the vibration housing 1613. In some embodiments, the vibration shell 1613 (including shell side panels 16132, shell back panels 16133 and shell panel 16131), vibration element 1611, first elastic element 1621, and mass element 1623 in the speaker 1600 are the same as or similar to the vibration shell 1213 (including shell side panels 12132, shell back panels 12133 and shell panel 12131), vibration element 1211, first elastic element 1221, and mass element 1223 in the speaker 1200, and are not repeated here.

[0164] and Fig.12 Unlike the loudspeaker 1200 shown in the figure, the vibration reduction component 1620 of the loudspeaker 1600 includes two groups of resonance components. For the convenience of description, the resonance component arranged on the upper side of the inner wall of the shell back plate 16133 can be called the first resonance component 1620-1, and the resonance component arranged on the lower side of the inner wall of the shell back plate 16133 can be called the second resonance component 1620-2. The mass elements in each group of resonance components are connected to the inner wall of the shell back plate through the first elastic element. Among them, the first elastic element 1621-1 of the first resonance component 1620-1 is connected to the inner wall of the shell back plate 16133 and the upper shell side plate 16132 at the same time. The first elastic element 1621-2 of the second resonance component 1620-2 is connected to the inner wall of the shell back plate 16133 and the lower shell side plate 16132 at the same time. As shown Fig.16 As shown, the first elastic elements of the two groups of resonant components are made of the same material, and the thickness of the first elastic elements is the same. Exemplarily, the two groups of resonant components use glue as the first elastic element, and the thickness of the glue layer formed by the glue coating on the inner wall of the back plate of the shell is the same or similar. In some alternative embodiments, the first elastic elements of the two groups of resonant components can be made of different materials or have different thicknesses. Exemplarily, the first elastic element 1621-1 of the first resonant component 1620-1 can be foam, and the first elastic element 1621-2 of the second resonant component 1620-2 can be glue.

[0165] Continue to see Fig.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 groups of resonant components are spaced apart by a preset distance. The preset distance can be set according to actual needs.

[0166] The first resonant component 1620-1 and the second resonant component 1620-2 may not be limited to Fig.16 In some embodiments, the first resonant component 1620-1 and the second resonant component 1620-2 may be arranged in any area of ​​the inner wall of the shell back plate 16133. The inner wall of the shell back plate 16133 may include an edge area and a center area. The edge area may refer to an area close to the shell side plate 16132. In some embodiments, the first resonant component 1620-1 and the second resonant component 1620-2 may both be arranged in the edge area. For example, Fig.16 In the embodiment, the first elastic elements of the two groups of resonant components are connected to the shell side plate 16132. In other embodiments, the first resonant component 1620-1 and the second resonant component 1620-2 can be both arranged in the central area. For example, the first elastic elements of the two groups of resonant components are not connected to the shell side plate 16132, and are separated from the shell 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 can be arranged in the edge area and the central area, respectively. Exemplarily, the first resonant component 1620-1 can be arranged in the edge area, and its first elastic element 1621-1 is connected to the upper shell side plate 16132. The second resonant component 1620-2 can be arranged in the central area, and its first elastic unit 1621-2 is only connected to the inner wall of the shell back plate 16133. In another example, the first resonant component 1620-1 can be arranged in the edge area and surround the entire shell back plate 16133 to form a ring structure to enclose the second resonant component 1620-2 therein. For example, a circle of foam is arranged around the edge area of ​​the shell back plate 16133 as the 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 arranged in the central area.

[0167] As described in the above embodiments, the resonant frequency of the first resonant component 1620-1 and the resonant frequency of the second resonant component 1620-2 may be the same or different. When the resonant frequency of the first resonant component 1620-1 and the resonant frequency of the second resonant component 1620-2 are different, a vibration reduction effect may be generated in the frequency band near the respective resonant frequencies, thereby widening the frequency band of vibration absorption. When the resonant frequency of the first resonant component 1620-1 and the resonant frequency of the second resonant component 1620-2 are the same, the vibration reduction effect in the frequency band near the resonant frequency may be further enhanced.

[0168] Fig.17FIG. 1 is a cross-sectional schematic diagram of another loudspeaker including two groups of resonance components according to some embodiments of the present specification. Fig.17 As shown, the speaker 1700 may include a vibration component 1710 and a vibration reduction component 1720. The vibration component 1710 may include a vibration element 1711 (e.g., a transducer) that generates mechanical vibrations and a vibration housing 1713 that contacts the user's facial skin. The vibration reduction component 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 shell 1713 (including the shell panel 17131, the shell side panel 17132 and the shell back panel 17133), the vibration element 1711, the first elastic element (for example, the first elastic element 1721-1, the first elastic element 1721-2), and the mass element (for example, the mass element 1723-1, the mass element 1723-2) in the speaker 1700 are the same as or similar to the vibration shell 1613 (including the shell panel 16131, the shell side panel 16132 and the shell back panel 16133), the vibration element 1611, the first elastic element (for example, the first elastic element 1621-1, the first elastic element 1621-2), and the mass element (for example, the mass element 1623-1, the mass element 1623-2) in the speaker 1600, and are not repeated here.

[0169] and Fig.16The difference between the loudspeaker 1600 shown is that the two groups of resonant components of the loudspeaker 1700 (for example, the first resonant component 1720-1 and the second resonant component 1720-2) are not directly connected to the vibration shell 1713, but are connected in a stacked manner. Exemplarily, one side of the first elastic element 1721-1 of the first resonant component 1720-1 is connected to the inner wall of the vibration shell 1713, and the edge of the first elastic element 1721-1 is also connected to the shell side plate 17132 at the same time. Its 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 component 1720-2 is connected to the side of the mass element 1723-1 of the first resonant component 1720-1 away from the shell back plate 17133, and its edge is not connected to the shell side plate 17132, and the other side is connected to the mass element 1723-2. In some embodiments, during actual manufacturing, glue may be applied on the inner wall of the shell back plate 17133 (as the first elastic element 1721-1 of the first resonant component 1720-1), the glue covers the inner wall of the shell back plate 17133, and the mass element 1723-1 is bonded to the glue surface. Then, glue is applied on the side of the mass element 1723-1 away from the shell back plate 17133 (as the first elastic element 1721-2 of the second resonant component 1720-2), and finally another mass element 1723-2 is bonded to the glue surface.

[0170] In some cases, when at least two groups of resonant components are connected in series in a stacked manner, a more complex resonant system can be formed, which has multiple resonant modes, that is, multiple resonant frequencies. At the corresponding resonant frequency, the resonant system can absorb the vibration energy of the vibration shell 1713 to reduce the sound leakage caused by the vibration of the vibration shell 1713.

[0171] The basic concepts have been described above. Obviously, for those skilled in the art, the above invention disclosure is only an example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0172] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment" and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different places in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0173] Similarly, it should be noted that in order to simplify the description disclosed in this specification and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this specification, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this specification are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0174] In some embodiments, numbers are used to describe the number of components and attributes. It should be understood that such numbers used to describe the embodiments are modified by modifiers such as "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical data used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical data should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and data used to confirm the breadth of their range in some embodiments of this specification are approximate values, in specific embodiments, such numerical values ​​are set as accurately as possible within the feasible range.

[0175] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A loudspeaker, characterized in that: include: Fixing components; a vibration assembly, the vibration assembly comprising a vibration element and a vibration housing, the vibration element being used to convert an electrical signal into a mechanical vibration, the vibration housing being fixed to the fixing assembly and being used to contact with the facial skin of the user to transmit the mechanical vibration; as well as A first elastic element, wherein the first elastic element is elastically connected to the vibration shell.

2. The loudspeaker according to claim 1, characterized in that The loudspeaker further includes a mass element, wherein the mass element is connected to the vibration shell via the first elastic element, and the mass element and the first elastic element are connected to form a resonance component.

3. The loudspeaker according to claim 1 or 2, characterized in that: The vibration shell includes a vibration panel, the vibration shell contacts the facial skin of the user through the vibration panel, and the first elastic element is used to reduce the mechanical vibration intensity of the vibration panel.

4. The loudspeaker according to claim 2, characterized in that The ratio of the mass of the mass element to the mass of the vibration shell is in the range of 0.04 to 1.

25.

5. The loudspeaker according to claim 2 or 4, characterized in that: The vibration component generates a first resonance peak at a first frequency in a low frequency region, and the resonance component satisfies at least one of the following three AC conditions: A. the resonant component generates a second resonant peak at a second frequency in the low frequency region, and a ratio of the second frequency to the first frequency is in the range of 0.5 to 2; B. the resonant component generates a second resonant peak at a second frequency in the low frequency region, and the first frequency and the second frequency are both less than 500 Hz; C. Within a frequency range less than the first frequency, the vibration amplitude of the resonant component is greater than the vibration amplitude of the vibration shell.

6. The loudspeaker according to claim 2 or 4, characterized in that: Under the interaction between the vibration shell and the resonance component, the loudspeaker generates a trough in the low-frequency region.

7. The loudspeaker according to claim 2 or 4, characterized in that: The vibration shell comprises a vibration panel and a shell back plate arranged opposite to the vibration panel, the vibration shell contacts the user's facial skin through the vibration panel, the first elastic element is arranged on the surface of the shell back plate, and the contact area between the first elastic element and the shell back plate is at least greater than 10 mm 2 .

8. The loudspeaker according to claim 2 or 4, characterized in that: The first elastic element has pores inside or on its surface; Alternatively, the first elastic element has pores inside or on its surface, and the pores are filled with damping fillers.

9. The loudspeaker according to claim 7, characterized in that The resonant components include at least two groups, the first elastic elements in each group of the resonant components are connected to the shell back plate, and two adjacent groups of the resonant components are spaced apart by a preset distance.

10. The loudspeaker according to claim 7, characterized in that The resonant components include at least two groups, and the at least two groups of resonant components are stacked along the thickness direction of the first elastic element. The first elastic elements of two adjacent groups of resonant components are connected to the mass element.

11. The loudspeaker according to claim 9 or 10, characterized in that: The first elastic element is arranged on the inner wall of the housing back plate.

12. The loudspeaker according to claim 11, characterized in that The first elastic element includes a diaphragm; Wherein, the mass element comprises a composite structure attached to the surface of the diaphragm; Alternatively, the mass element includes a composite structure attached to the surface of the diaphragm, and the composite structure includes a paper cone, an aluminum sheet or a copper sheet.

13. The loudspeaker according to claim 12, characterized in that The vibration shell is provided with a sound outlet hole, and the sound generated by the vibration of the resonance component is output to the outside through the sound outlet hole; Alternatively, a sound outlet hole is provided on the back plate of the shell, and the sound generated by the vibration of the resonance component is output to the outside through the sound outlet hole.

14. The loudspeaker according to claim 9 or 10, characterized in that: The first elastic element is arranged on the outer wall of the housing back plate.

15. The loudspeaker according to claim 1, characterized in that 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; Alternatively, the vibration assembly further includes a vibration transmission plate, and the vibration element transmits the mechanical vibration to the vibration shell through the vibration transmission plate.

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