Loudspeaker assembly and intelligent wearable device

Abstract

The utility model provides a loudspeaker assembly and an intelligent wearable device. The speaker assembly includes a housing; the sound production element is provided with a first surface, a second surface and a third surface, the first surface and the second surface are oppositely arranged, the third surface is arranged between the first surface and the second surface, the sound production element is arranged on the shell, and at least one sound leakage hole is formed in the sound production element; the sound cavity is arranged between the second surface of the sound production element and the shell; the sound outlet hole is formed in the shell, and the sound outlet hole is communicated with the sound cavity; the silencing holes are formed in the shell; wherein the silencing holes and the sound leakage holes are correspondingly arranged, and the silencing holes are directly communicated with the sound leakage holes.

Description

[0001] This application claims the benefits and priority of the Chinese invention patent application entitled “Speaker Assembly and Smart Wearable Device” filed on May 26, 2023, with application number 202310615713.8, which is incorporated herein by reference in its entirety. Technical Field

[0002] The utility model relates to a loudspeaker assembly, and in particular to a loudspeaker assembly and a smart wearable device capable of improving privacy. Background Art

[0003] With the development of technology, smart wearable devices such as smart glasses and smart headphones have become increasingly popular.

[0004] Most current smart wearable devices use a near-ear external acoustic structure with speakers placed on the temples. This open audio device will leak a certain amount of sound when used for calls or entertainment. Therefore, many products use a method of adding a back cavity sound leakage hole to enable sound waves below a certain frequency to be offset in the far field without affecting the listening effect at the human ear. The near-ear external structure has a certain size of back cavity, which makes the temple corresponding to the speaker position very thick, which cannot meet the demand for thin and light smart wearable devices.

[0005] Therefore, how to provide a speaker assembly and a smart wearable device that is thinner and lighter and can improve privacy is one of the problems that need to be solved. Utility Model Content

[0006] The embodiments of the utility model provide a speaker assembly and a smart wearable device, which can improve the privacy of user use, reduce the thickness and width of the smart wearable device, and make it thinner and lighter.

[0007] A loudspeaker assembly according to one embodiment of the utility model comprises a housing; a sound-emitting element having a first surface, a second surface and a third surface, wherein the first surface is arranged opposite to the second surface, and the third surface is arranged between the first surface and the second surface, the sound-emitting element is arranged in the housing, and the sound-emitting element has at least one sound leakage hole; a sound cavity is arranged between the second surface of the sound-emitting element and the housing; a sound outlet hole is arranged in the housing, and the sound outlet hole is connected to the sound cavity; and a sound-absorbing hole is arranged in the housing; wherein the sound-absorbing hole is arranged corresponding to the sound leakage hole, and the sound-absorbing hole is directly connected to the sound leakage hole.

[0008] In the above-mentioned loudspeaker assembly, the first surface of the sound-emitting element is attached to the housing.

[0009] In the above-mentioned loudspeaker assembly, the housing has a boss, and the sound-generating element is embedded in the boss.

[0010] The above-mentioned speaker assembly, wherein the shell has a bottom wall and a top wall; wherein the muffler hole is arranged on the top wall, the sound outlet hole is arranged on the bottom wall, and the sound leakage hole is arranged on the third surface of the sound-emitting element opposite to the top wall.

[0011] The above-mentioned speaker assembly, wherein the sound leakage holes include a plurality, the sound absorbing holes include a plurality, and each of the sound absorbing holes corresponds to at least one of the sound leakage holes.

[0012] The above-mentioned speaker assembly, wherein the sound outlet is arranged on the bottom wall.

[0013] The above-mentioned speaker assembly, wherein the housing further includes a first sub-housing and a second sub-housing connected to each other, and at least one of the first sub-housing and the second sub-housing has a limiting portion for limiting the sound-emitting element when the first sub-housing and the second sub-housing are combined.

[0014] In the above-mentioned loudspeaker assembly, the sound-generating element is connected to the first sub-housing and / or the second sub-housing via a sealing material.

[0015] An intelligent wearable device according to one embodiment of the present invention comprises at least one speaker assembly as described above.

[0016] The above-mentioned smart wearable device, wherein the smart wearable device includes a shell, and the shell is integrally or separately arranged with the outer shell of the speaker assembly.

[0017] In the speaker assembly of the utility model, a sound unit with a special structure cooperates with the shell. Except for a gap between the second surface of the sound element and the shell to form a front cavity, the other surfaces of the sound element are directly and completely fitted with the shell, eliminating the setting of the gap, so that the smart wearable device can be lighter and thinner.

[0018] By arranging the muffler hole and the sound outlet hole opposite to each other, the shortest sound leakage channel is formed, and the width of the speaker assembly can be made narrower. In addition, the housing includes a first sub-housing and a second sub-housing that are connected to each other, and at least one of the first sub-housing and the second sub-housing has a limiting portion, which can fix and limit the sound-generating element when the first sub-housing and the second sub-housing are combined. In addition, the sound-generating element is connected to the first sub-housing and / or the second sub-housing through a sealing material, which can further fix and limit the generating element.

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of a loudspeaker assembly according to an embodiment of the utility model.

[0021] Figure 2 It is a structural schematic diagram of a sound-generating element according to an embodiment of the utility model.

[0022] Figure 3 It is a longitudinal sectional schematic diagram of a loudspeaker assembly according to an embodiment of the utility model.

[0023] Figure 4 It is a bottom view schematically showing a loudspeaker assembly according to an embodiment of the present utility model.

[0024] Figures 5A-5D It is a cross-sectional schematic diagram of a loudspeaker assembly according to an embodiment of the utility model.

[0025] Figure 6 It is a structural schematic diagram of a speaker assembly according to another embodiment of the utility model.

[0026] Figures 7A-7F It is a cross-sectional schematic diagram of a loudspeaker assembly according to another embodiment of the utility model.

[0027] Figures 8A-8C It is a schematic diagram of the transverse cross-sectional structure of a loudspeaker assembly according to another embodiment of the utility model.

[0028] Fig. 9 It is a structural schematic diagram of a sound-generating element in another embodiment of the utility model.

[0029] Figures 10A-10C It is a structural schematic diagram of a smart wearable device according to another embodiment of the present invention.

[0030] Fig.11 Schematic diagram of the comparison of frequency response curves of a smart wearable device according to an embodiment of the present invention.

[0031] Wherein, the reference numerals are:

[0032] 100: Speaker assembly

[0033] 101: Shell

[0034] 1011: Boss

[0035] 1012: Bottom wall

[0036] 1013: Top wall

[0037] 1014: First side wall

[0038] 1015: Second side wall

[0039] 1016: First subshell

[0040] 1017: Second subshell

[0041] 1018a, 1018b: Limiting part

[0042] 102: Sounding element

[0043] 1021: First surface

[0044] 1022: Second surface

[0045] 1023: Sound leakage hole

[0046] 1024: Third surface

[0047] 103: Vocal cavity

[0048] 104: Sound hole

[0049] 105: Sound guide channel

[0050] 106: Muffler hole

[0051] 107a, 107b: Sealing material

[0052] 108: Diaphragm

[0053] 200: Smart wearable devices

[0054] 201: Shell

[0055] 202: Sound receiving unit DETAILED DESCRIPTION

[0056] The following specific embodiments and accompanying drawings are used to illustrate the implementation methods disclosed in the utility model. Those skilled in the art can understand the advantages and effects of the utility model from the contents disclosed in this specification. However, the contents disclosed below are not intended to limit the scope of protection of the utility model. Without departing from the principle of the spirit of the concept of the utility model, those skilled in the art can implement the utility model with other different embodiments based on different viewpoints and applications.

[0057] For the sake of clarity, the drawings of the present invention are simplified schematic diagrams to illustrate the basic structure of the present invention. Therefore, the structures shown in the drawings of the present invention are not drawn according to the shape and size ratio of the actual implementation. For example, the size of a specific component is enlarged for the convenience of description.

[0058] In addition, it should be understood that when a component such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another component, it can be directly on or connected to the other component, or intermediate components may also exist. In contrast, when a component is referred to as being "directly on" or "directly connected to" another component, there are no intermediate components. As used herein, "connected" can refer to physical and / or electrical connections. Furthermore, "electrically connected" or "coupled" can mean the presence of other components between two components.

[0059] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as understood by those with ordinary knowledge in the field to which the utility model belongs. It will be further understood that those terms such as those defined in commonly used dictionaries should be interpreted as having the same meaning as they have in the context of the relevant technology and the utility model, and will not be interpreted as idealized or overly formal meanings unless explicitly defined in this article.

[0060] In addition, it should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various components, parts, regions, layers and / or parts, these components, parts, regions, and / or parts should not be limited by these terms. These terms are only used to distinguish one component, part, region, layer or part from another component, part, region, layer or part. Therefore, the "first component", "component", "region", "layer" or "part" discussed below may be referred to as a second component, part, region, layer or part without departing from the teachings of this article.

[0061] It should be understood that references in the specification to "one embodiment", "an embodiment", "an example embodiment", etc., mean that the embodiment being described may include certain features, structures, or characteristics, but does not necessarily include these certain features, structures, or characteristics. In addition, such expressions do not refer to the same embodiment. Further, when a certain feature, structure, or characteristic is described in conjunction with an embodiment, it is indicated that it is within the knowledge of those skilled in the art to combine such feature, structure, or characteristic into other embodiments, whether or not it is explicitly described.

[0062] Certain words are used in the specification and subsequent claims to refer to specific modules, components or parts. It should be understood by those of ordinary skill in the art that technical users or manufacturers may refer to the same module, component or part by different nouns or terms. This specification and subsequent claims do not use differences in names as a way to distinguish modules, components or parts, but use differences in the functions of modules, components or parts as the criteria for distinction. "Including" and "including" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0063] Furthermore, in the following specification and claims, reference will be made to a number of terms which shall be defined as having the following meanings. The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "Optional" or "optionally" means that the subsequently described event or circumstance may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

[0064] The structural principle and working principle of the utility model are described in detail below in conjunction with the accompanying drawings:

[0065] Figure 1 This is a schematic diagram of the structure of a speaker assembly according to an embodiment of the utility model. Figure 2 This is a schematic diagram of the structure of a sound-generating element according to an embodiment of the utility model. Figure 3 1 is a longitudinal sectional schematic diagram of a loudspeaker assembly according to an embodiment of the utility model. Figure 4 1 is a bottom view of a speaker assembly according to an embodiment of the present invention. Figures 1 to 4 As shown, the speaker assembly 100 of the present invention includes a housing 101, a sound element 102, a sound cavity 103 and a sound outlet 104. The sound element 102 is disposed in the housing 101, and the sound element 102 has a first surface 1021 (the back of the sound element 102) and a second surface 1022 (the front of the sound element 102) opposite to each other, and at least one sound leakage hole 1023 is formed on the first surface 1021 of the sound element 102. The inner cavity area between the sound element 102 and the housing 101 constitutes the sound cavity 103 of the speaker assembly 100, that is, the sound cavity 103 is formed between the second surface 1022 of the sound element 102 and the housing 101, and the sound outlet 104 is disposed in the housing 101, and the sound outlet is connected to the sound cavity, and the sound emitted by the sound element 102 is transmitted to the sound outlet 104 through the sound cavity 103 and emits sound to the outside.

[0066] like Figure 1As shown, in the present invention, the speaker assembly 100 is further provided with a muffler hole 106 , and the muffler hole 106 is provided corresponding to the sound leakage hole 1023 , and the muffler hole 106 is directly connected to the sound leakage hole 1023 . Figures 5A-5D This is a cross-sectional schematic diagram of a speaker assembly according to an embodiment of the present invention. Figures 5A-5D The configuration of the sound-absorbing hole 106 and the sound-leaking hole 1023 of the present invention is described in detail.

[0067] Specifically, Figure 1-4 , Figure 5A As shown, in the speaker assembly 100, the housing 101 includes a bottom wall 1012, a top wall 1013, and opposite first side walls 1014 and second side walls 1015. The first surface 1021 of the sound-emitting element 102 is attached to the inner surface of the first side wall 1014, and at least one muffler hole 106 is disposed on the first side wall 1014. Each muffler hole 106 is disposed corresponding to the position of each sound leakage hole 1023, so that the sound leakage hole 1023 is directly connected to the muffler hole 106.

[0068] Furthermore, in this embodiment, sealing foam may be added between the first surface 1021 and the inner surface of the first side wall 1014 to ensure sealing between the two.

[0069] In the present invention, "direct connection" means that the first surface 1021 of the sound-emitting element 102 and the housing 101 do not form a rear acoustic cavity in the usual sense, but the muffler hole 106 is directly connected to the sound leakage hole 1023. Therefore, since the design of the rear acoustic cavity is eliminated, the space between the housing 101 and the first surface 1021 of the sound-emitting element can be saved, the thickness and / or volume of the housing 101 can be saved, and the speaker assembly 100 can be made thinner. Figure 1-4 , Figure 5A , Figure 5B As shown in Figure 5B In the illustrated embodiment, in the speaker assembly 100, the sound element 102 is embedded in the first side wall 1014, and the first surface 1021 of the sound element 102 can be flush with the inner surface of the first side wall 1014, or the first surface 1021 of the sound element 102 can be protruding from the inner surface of the first side wall 1014, or the first surface 1021 of the sound element 102 is recessed in the inner surface of the first side wall 1014, but the present invention is not limited thereto. The first side wall 1014 is also provided with at least one muffler hole 106, and the muffler hole 106 is provided corresponding to the position of the sound leakage hole 1023, so that the sound leakage hole 1023 is directly connected to the muffler hole 106.

[0070] like Figure 1-4 , Figure 5C As shown in Figure 5CIn the illustrated embodiment, in the speaker assembly 100, an annular boss 1011 is formed in the first side wall 1014, and the sound element 102 is embedded in the boss 1011 of the first side wall 1014. The first surface 1021 of the sound element 102 can be flush with the side surface of the boss, or the first surface 1021 of the sound element 102 can be protruding from the side surface of the boss 1011, or the first surface 1021 of the sound element 102 is recessed in the side surface of the boss 1011, but the present invention is not limited thereto. At least one muffler hole 106 is also disposed on the first side wall 1014, and the muffler hole 106 is disposed corresponding to the position of the sound leakage hole 1023, so that the sound leakage hole 1023 is directly connected to the muffler hole 106.

[0071] like Figure 1-4 , Figure 5D As shown in Figure 5D In the illustrated embodiment, in the speaker assembly 100, a boss 1011 is formed on the bottom wall 1012 and the top wall 1013, respectively, and the sound-emitting element 102 is embedded between the first side wall 1014 and the boss 1011. The first side wall 1014 is also provided with at least one muffler hole 106, which is arranged at a position corresponding to the sound leakage hole 1023, so that the sound leakage hole 1023 is directly connected to the muffler hole 106.

[0072] Of course, the sound element 102 may also be disposed in the housing 101 of the speaker assembly 100 in other ways, as long as no rear acoustic cavity is formed between the first surface 1021 (back surface) of the sound element 102 and the housing 101 , and the present invention is not limited thereto.

[0073] The utility model Figure 1 -In the embodiment shown in FIG. 5 , only a quadrilateral housing 101 is used as an example for explanation. Of course, the housing 101 may also be circular, elliptical or other shapes, as long as when the sound element 102 is installed in the housing 101 , the sound leakage hole 1023 of the sound element 102 is directly connected to the muffler hole 106 . The present invention is not limited thereto.

[0074] Recombination Figure 4 , Figures 5A-5D As shown, in the speaker assembly 100 of the present invention, the muffler hole 106 is disposed on the first side wall 1014 of the housing 101, and the sound outlet hole 104 is disposed on the bottom wall 1012 of the housing 101, and the muffler hole 106 and the sound outlet hole 104 extend along the first direction D1 (the length direction of the speaker assembly), and the muffler hole 106 and the sound outlet hole 104 are adjacently disposed along the first direction D1, or the muffler hole 106 and the sound outlet hole 104 are staggeredly arranged along the first direction D1. That is, according to Figure 4In the direction shown, the rightmost side or rightmost point of the right muffler hole 106 is aligned with the leftmost side or leftmost point of the left sound outlet hole 104 in a direction perpendicular to the first direction D1, or there is a certain distance between the rightmost side or rightmost point of the right muffler hole 106 and the leftmost side or leftmost point of the left sound outlet hole 104, and the leftmost side or leftmost point of the left sound outlet hole 104 extends further to the right than the rightmost side or rightmost point of the right muffler hole 106. The specific distance can be set as needed, and the present invention is not limited thereto.

[0075] In the speaker assembly 100 of the present invention, since the design of the back cavity is cancelled, the distance between the sound leakage hole 1023 of the sound-emitting element 102 and the sound outlet hole 104 may be too close, affecting the sound-absorbing effect. In order to increase the sound-absorbing effect, in the speaker assembly 100 of the present invention, the sound-absorbing hole 106 and the sound outlet hole 104 are respectively arranged on different surfaces of the housing 101, and the sound-absorbing hole 106 and the sound outlet hole 104 are staggered, which can increase the distance between the sound-absorbing hole 106 and the sound outlet hole 104 to a certain extent, while ensuring the listening effect at the human ear, improving the sound-absorbing effect and enhancing the privacy of the speaker assembly.

[0076] Further, if Figure 3 As shown, a sound guide channel 105 is provided between the sound cavity 103 and the sound outlet hole 104 , and the sound emitted by the sound element 102 is transmitted to the sound outlet hole 104 through the sound cavity 103 and the sound guide channel 105 , and then transmitted to the human ear.

[0077] Figures 1 to 5A - Figure 5D In the speaker assembly 100 shown, an example is taken in which four sound leakage holes 1023 are provided in the sound-emitting element 102, four sound-absorbing holes 106 are correspondingly provided in the housing 101, and one sound-absorbing hole 106 corresponds to one sound leakage hole 1023 and is directly connected to one sound leakage hole 1023. Of course, one or other number of sound leakage holes 1023 and one or other number of sound-absorbing holes 106 can be provided as needed, and the present invention is not limited to this.

[0078] Figure 6 FIG. 1 is a schematic diagram of the structure of a speaker assembly according to another embodiment of the present invention. Figure 6 As shown, the difference from the previous embodiment is that Figure 6In the illustrated embodiment, a sound-absorbing hole 106 is provided in the housing 101 of the speaker assembly 100, and the sound-absorbing hole 106 corresponds to and is directly connected to the four sound-leaking holes 1023. That is, when the housing 101 is provided with a sound-absorbing hole 106, the first surface 1021 of the sound-emitting element 102 is directly exposed. Of course, two sound-absorbing holes 106 may be provided as required, and each sound-absorbing hole 106 corresponds to and is directly connected to two sound-leaking holes 1023, or other numbers of sound-absorbing holes 106 may be provided as required, and each sound-absorbing hole 106 corresponds to one or more sound-leaking holes 1023, and the present invention is not limited thereto.

[0079] Figures 7A-7F FIG. 2 is a cross-sectional schematic diagram of a speaker assembly according to another embodiment of the present invention. Figures 7A-7F As shown, in the speaker assembly 100 of the present invention, the first surface 1021 of the sound-emitting element 102 can be attached to the inner surface of the first side wall 1014 of the housing 101, or can be embedded in the first side wall 1014, or embedded between the first side wall 1014 and the boss 1011, but the present invention is not limited thereto.

[0080] It should be noted that Fig.7D In the illustrated embodiment, the first surface 1021 of the sound-emitting element 102 is flush with the outer surface of the housing 101 , thereby the loudspeaker assembly 100 of the present invention can achieve the thinnest effect.

[0081] in addition, Figure 1 - In the speaker assembly 100 shown in FIG. 7 , a cover plate or a dustproof net (not shown in the figure) can also be provided at a position corresponding to the muffler hole 106 in the housing 101 to ensure that ventilation does not affect sound propagation and to play a role in dustproof and aesthetics. The cover plate can be a sheet or net made of metal, resin or other materials, but the present invention is not limited thereto. Moreover, the outer surface of the housing 101 and the first surface of the sound-emitting element 102 can be sprayed with the same color, or a layer of mesh or sticker of the same color can be attached thereto, but the present invention is not limited thereto.

[0082] Figures 8A-8C FIG. 2 is a schematic diagram of a transverse cross-sectional structure of a speaker assembly according to another embodiment of the present invention. Fig. 8A and Fig. 9 As shown, in the speaker assembly 100 of the present invention, the muffler hole 106 is arranged on the top wall 1013, and the sound outlet hole 104 is arranged on the bottom wall 1012; in this embodiment, the sound element 102 is arranged in the shell 101, and the third surface 1024 of the sound element 102 can be flush with the inner surface of the top wall 1013, the third surface 1024 of the sound element 102 can also protrude from the inner surface of the top wall 1013, or the third surface 1024 of the sound element 102 is recessed in the inner surface of the top wall 1013, but the present invention is not limited thereto.

[0083] Furthermore, the housing 101 further includes a first sub-housing 1016 (the outer part of the housing 101) and a second sub-housing 1017 (the inner part of the housing 101) connected to each other; the first sub-housing 1016 and the second sub-housing 1017 can be connected by means of gluing, snapping, threading, etc., but the present invention is not limited thereto. The top wall of the first sub-housing 1016 is provided with at least one muffler hole 106, and the sound leakage hole 1023 of the sound-emitting element 102 is provided corresponding to the muffler hole 106, and the muffler hole 106 is directly connected to the sound leakage hole 1023. It should be noted that the muffler hole 106 is provided on the top wall 1013 of the housing 101. Specifically, the top wall 1013 of the housing 101 can be the top wall of the first sub-housing 1016, and the top wall 1013 of the housing 101 can also be formed by combining the top wall of the first sub-housing 1016 and the top wall of the second sub-housing 1017, but the present invention is not limited thereto. The beneficial effect of this embodiment is that the sound-absorbing hole 106 is arranged on the top wall 1013, the sound outlet hole 104 is arranged on the bottom wall 1012, the sound-absorbing hole 106 only exists on one side of the shell and the sound leakage hole 1023 corresponds to the sound-absorbing hole 106, forming the shortest sound leakage channel, and the width and thickness of the speaker assembly 100 of this embodiment (the sum of the thickness of the top wall 1013 of the shell, the height of the sound-emitting element 102, the thickness of the bottom wall 1012 of the shell and the assembly gap) are narrower.

[0084] The first sub-housing 1016 has a limiting portion 1018a for limiting the sound element 102 when the first sub-housing 1016 and the second sub-housing 1017 are combined.

[0085] It should be noted that the positional relationship between the sound element 102 and the first sub-shell 1016 is similar to the aforementioned embodiment. The first surface 1021 of the sound element 102 can be attached to the inner surface of the top wall of the first sub-shell 1016, or can be embedded in the top wall of the first sub-shell 1016, or can be embedded between the top wall of the first sub-shell 1016 and the boss. The present invention is not limited to this.

[0086] like Figure 8B As shown, Fig. 8AThe difference between the embodiments is that the sound element 102 is connected to the first sub-housing 1016 through a sealing material 107a. The first surface 1021 of the sound element 102 having the sound leakage hole 1023 is connected to the top inner surface of the first sub-housing 1016 through a sealing material 107, and other surfaces of the sound element 102 that do not have the sound leakage hole 1023 can also be bonded to the corresponding inner surface of the first sub-housing 1016 through a sealing material 107b. The materials of the sealing material 107a and the sealing material 107b can be the same or different. Sealing materials include foam, sealant, rubber, plastic, fiber, etc., but the utility model is not limited thereto. The sealing material can play a supporting role to prevent the sound element from moving in the cavity, and can make the sealing between the sound element and the housing more reliable. In addition, in this embodiment, the muffler hole 106 is a hole along the D1 direction (see Figure 4 ), and the muffler hole 106 may correspond to a plurality of sound leakage holes 1023. The beneficial effect of this embodiment is that the other surfaces of the sound element 102 without the sound leakage holes 1023 are bonded to the corresponding inner surface of the first sub-housing 1016 through the sealing material 107b, so that the sound element 102 can be fixed, and the side with the sound leakage holes 1023 is more closely bonded to the inner surface of the first sub-housing 1016.

[0087] like Figure 8C As shown, Figure 8B The difference between the embodiments is that the second sub-housing 1017 has a limiting portion 1018b, which is used to further limit the position of the sound element 102 when the first sub-housing 1016 and the second sub-housing 1017 are combined. It should be noted that the limiting portion 1018a and the limiting portion 1018b can be a blocking limiting structure such as a blocking limiting wall and a blocking limiting block, and a sealing material can be provided between the limiting portion 1018a and the limiting portion 1018b and the sound element 102 to further limit and fix the sound element 102, but the present invention is not limited thereto.

[0088] In an embodiment of the present invention, the muffler hole 106 may be a through hole corresponding to the sound leakage hole 1023 , or may be a through hole or multiple through holes extending along the direction D1 , and the number of the through holes is not limited. The opening area of ​​the through hole is designed as follows: the opening area is determined according to the resonance frequency of the resonance cavity formed after cooperation with the sound-emitting element 102, and the resonance frequency of the resonance cavity should be greater than or equal to the resonance frequency of the front cavity peak to avoid appearing after the intermediate frequency and causing uneven frequency response, that is: the resonance frequency of the front cavity peak is Fh=1 / (2πsqrt(Ma*Ca)), where Ma=ρ*L / S, Ca= V0 / (ρ*c0^2), ρ is the air density, L is the length of the sound outlet hole, S is the area of ​​the sound outlet hole, V0 is the volume of the front sound cavity, that is, the cavity between the diaphragm 108 and the sound outlet hole 104, c0 is the sound speed, and the corresponding resonance frequency Fb of the cavity structure composed of the back space of the single diaphragm 108 and the sound leakage hole is calculated in the same way as the front cavity peak frequency Fh, and it is necessary to ensure that Fb is greater than or equal to Fh; the shape of the sound outlet hole corresponding to the sound cavity 103 is not restricted, and it is best to be closest to and facing the human ear.

[0089] Figures 10A-10C Schematic diagram of the structure of another embodiment of the smart wearable device of the utility model. Figures 10A-10C As shown, the smart wearable device 200 of the present invention includes a housing 201 and any one of the above-mentioned speaker assemblies 100. The housing 101 of the speaker assembly 100 can be separately provided from the housing 201, that is, the speaker assembly 100 can be installed on the housing 201 of the smart wearable device 200 by plugging, or it can be provided integrally with the housing 201. The smart wearable device 200 can be smart glasses, smart headphones, VR (Virtual Reality) equipment, etc.

[0090] like Fig. 10C As shown, for the smart wearable device 200 of the present invention, in order to ensure sound effects and privacy, it is necessary to have a distance d between the sound outlet 106 and the sound receiving unit 202 (such as a human ear or other receiving device). In the present invention, the distance d can be within 0-5 cm, and more preferably, the distance d is within 0-3 cm.

[0091] Fig.11 FIG. 1 is a schematic diagram showing a comparison of frequency response curves of a smart wearable device according to an embodiment of the present invention. Fig.11As shown, in the smart wearable device of the present invention, the sound-emitting element emits a forward sound wave from the front, and transmits the sound wave to the sound receiving unit (human ear) through the corresponding sound guide channel and the sound outlet hole on the front, and the reverse sound wave emitted from the back is exported through the sound leakage hole and the corresponding sound absorption hole. Within a certain frequency range, the difference between the far field (for example, 1 meter) and the near field (3 centimeters) of the smart wearable device of the present invention is much higher than the difference corresponding to the existing conventional closed cavity structure, indicating that under the same near field condition, the forward sound wave and the reverse sound wave of the smart wearable device of the present invention cancel each other out within the far field range, thereby reducing sound leakage in the far field and improving the privacy of the smart wearable device.

[0092] According to an embodiment of the utility model, in the speaker assembly of the utility model, the rear cavity is eliminated, and except for the second surface of the sound-emitting element being connected to the front cavity, the gap between other surfaces of the sound-emitting element and the shell is eliminated, so that the smart wearable device can be thinner and lighter.

[0093] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A speaker assembly, characterized in that: include: shell; A sound-emitting element, comprising a first surface, a second surface and a third surface, wherein the first surface is arranged opposite to the second surface, the third surface is arranged between the first surface and the second surface, the sound-emitting element is arranged on the housing, and the sound-emitting element has at least one sound leakage hole; a sound cavity, disposed between the second surface of the sound-emitting element and the housing; A sound outlet hole is provided on the housing, and the sound outlet hole is communicated with the sound cavity; A muffler hole is provided on the housing; in The muffler hole and the sound leakage hole are arranged correspondingly, and the muffler hole is directly connected with the sound leakage hole.

2. The loudspeaker assembly according to claim 1, wherein: The first surface of the sound-emitting element is attached to the housing.

3. The loudspeaker assembly according to claim 1, wherein: The housing has a boss, and the sound-generating element is embedded in the boss.

4. The loudspeaker assembly according to any one of claims 1 to 3, characterized in that: The housing has a bottom wall and a top wall; wherein the muffler hole is disposed on the top wall, and the sound leakage hole is disposed on the third surface of the sound-generating element opposite to the top wall.

5. The loudspeaker assembly according to claim 4, characterized in that The sound leakage holes include a plurality of holes, the sound absorbing holes include a plurality of holes, and each of the sound absorbing holes corresponds to at least one of the sound leakage holes.

6. The loudspeaker assembly according to claim 4, wherein: The sound outlet is arranged on the bottom wall.

7. The loudspeaker assembly according to claim 4, wherein: The housing further comprises a first sub-housing and a second sub-housing connected to each other, and at least one of the first sub-housing and the second sub-housing comprises a limiting portion for limiting the position of the sound-emitting element when the first sub-housing and the second sub-housing are combined.

8. The loudspeaker assembly according to claim 7, wherein: The sound-emitting element is connected to the first subhousing and / or the second subhousing via a sealing material.

9. A smart wearable device, characterized in that: include: At least one loudspeaker assembly according to any one of claims 1-8.

10. The smart wearable device according to claim 9, characterized in that: The smart wearable device comprises a shell, and the shell is integrally or separately arranged with the housing of the speaker assembly.

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