CN212278427U - Listen to device and support thereof - Google Patents

Abstract

The utility model relates to a listen to device and support thereof, the support is applied to and listens to the device, listen to the device and include casing subassembly and speaker subassembly, the casing subassembly is formed with an inner chamber, the speaker subassembly disposes in the inner chamber of casing subassembly, wherein, the support disposes in the inner chamber of casing subassembly, and be located speaker subassembly's sound production rear, the speaker subassembly has the independent back sound chamber of a predetermined volume, the wall in independent back sound chamber includes the support. This application separates through the back sound chamber with speaker subassembly with other structures, makes speaker subassembly have an independent back sound chamber promptly to reduce the influence of the machining precision of other structures and assembly precision to speaker subassembly's back sound chamber to the at utmost.

Description

Listen to device and support thereof

Technical Field

The application relates to the technical field of wireless earphones, in particular to a listening device and a support thereof.

Background

With the increasing popularity of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life. The wireless earphone is also rapidly developed, and the wireless earphone is favored by consumers due to the portability. However, due to the passivity of the wireless headset, the wireless headset itself needs to integrate a power supply unit, a sound generating unit, an antenna unit, a circuit board unit, and the like, so that the weight, volume, and acoustic performance thereof are being seriously examined.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a support, is applied to and listens to the device, listens to the device and includes casing subassembly and speaker subassembly, and the casing subassembly is formed with an inner chamber, and the speaker subassembly disposes in the inner chamber of casing subassembly, and wherein, the support disposes in the inner chamber of casing subassembly to be located the sound production rear of speaker subassembly, the speaker subassembly has the independent back sound chamber of a predetermined volume, and the wall in independent back sound chamber includes the support.

The embodiment of the application also provides a listening device, wherein, listening device includes casing subassembly, speaker subassembly and support, and the casing subassembly is formed with an inner chamber, and speaker subassembly, support configuration are in the inner chamber of casing subassembly, and the support is located the play sound rear of speaker subassembly, and speaker subassembly has the independent back sound chamber of a predetermined volume, and the wall in independent back sound chamber includes the support.

The beneficial effect of this application is: this application separates through the back sound chamber with speaker subassembly with other structures, makes speaker subassembly have an independent back sound chamber promptly to reduce the influence of the machining precision of other structures and assembly precision to speaker subassembly's back sound chamber to the at utmost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded schematic view of an embodiment of a listening device of the present application;

FIG. 2 is a schematic structural diagram of an embodiment of the present application in which the housing assembly, speaker assembly, and bracket are mated together;

FIG. 3 is a schematic structural diagram of another embodiment of the present application in which the housing assembly, speaker assembly, and bracket are mated with one another;

FIG. 4 is a schematic structural diagram of another embodiment of the present application in which the housing assembly, speaker assembly, and bracket are mated with one another;

FIG. 5 is a schematic structural diagram of another embodiment of the present application in which the housing assembly, speaker assembly, and bracket are mated together;

FIG. 6 is a schematic structural view of an embodiment of the bracket of FIG. 1;

FIG. 7 is a schematic view of the bracket of FIG. 6 from another perspective;

FIG. 8 is a schematic diagram of the structure of one embodiment of the speaker assembly of FIG. 1;

FIG. 9 is a schematic view of the speaker assembly of FIG. 1 assembled with a bracket;

FIG. 10 is a schematic view of the structure of FIG. 9 from another perspective;

FIG. 11 is a schematic structural view of an embodiment of the front housing of FIG. 1;

fig. 12 is a schematic sectional view of the assembled structural members of fig. 1 except for the rear case.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The inventors of the present application found in long-term studies that: in the related art, the battery, the main board and other structural components of the wireless earphone are generally directly arranged in the rear sound cavity, so that the spatial structure of the rear sound cavity is relatively complex, and the rear sound cavity of the wireless earphone is not an independent space. At the moment, due to the fact that the machining precision and the assembling precision of each structural part are inconsistent, the space structure of the rear sound cavity has large difference, the consistency of the acoustic curve of the wireless earphone is poor, and the acoustic performance of the wireless earphone is affected. To this end, the present application proposes the following examples.

Referring to fig. 1, fig. 1 is an exploded schematic view of an embodiment of a listening device of the present application.

In the embodiment of the present application, the listening device 10 may be an electronic device with a sound playing function, such as a wireless earphone and a wireless sound box. Here, the present embodiment exemplarily illustrates the listening device 10 as a wireless headset. Further, the listening device 10 may interact with a portable device having an audio-visual function, such as a mobile phone, a tablet, a computer, a wearable device, and a music player, through a wireless communication technology, such as bluetooth.

As shown in fig. 1, the listening device 10 may include a housing assembly 11, a speaker assembly 12, a stand 13, a battery 14, and a main board 15. The housing assembly 11 forms an inner cavity, and the speaker assembly 12, the bracket 13, the battery 14 and the main board 15 can be disposed in the inner cavity of the housing assembly 11. Of course, the inner cavity of the casing assembly 11 may also be provided with microphones (not shown in fig. 1), such as sound pick-up and microphone, so as to pick up the sound of the environment where the user is located for noise reduction, thereby improving the acoustic performance of the listening device 10; and/or to facilitate picking up the user's voice to implement a microphone function, thereby expanding the range of applications of the listening device 10.

The speaker assembly 12 is mainly used to convert the electrical signal into an acoustic signal so that the user can hear the sound emitted from the listening device 10. The speaker unit 12 may be any one of an electrodynamic type, a capacitive type, an electromagnetic type, a piezoelectric type, and the like. In some embodiments, the speaker assembly 12 may be embodied as a moving coil speaker or a moving iron speaker, the basic structure of which is within the understanding of those skilled in the art and will not be described in detail herein.

Further, the speaker assembly 12 has a separate rear sound cavity 100 with a predetermined volume, and the separate rear sound cavity 100 is separated from other structural members such as the battery 14 and the main board 15, so as to minimize the influence of the machining precision and the assembling precision of the other structural members on the rear sound cavity of the speaker assembly 12, thereby improving the acoustic performance (especially the low frequency characteristics of the sound) of the listening device 10. Wherein the detailed structure of the independent rear acoustic chamber 100 will be exemplarily described later.

The bracket 13 is located behind the sound emanating from the speaker assembly 12 so as to cooperate with the speaker assembly 12 (or the speaker assembly 12 and the housing assembly 11 together) to define the volume of the separate rear acoustic chamber 100.

It should be noted that: the sound emission rear side is a concept with respect to the sound emission front side of the speaker assembly 12, and when the sound emission direction of the speaker assembly 12 is directed toward the sound emission hole 1113 (as shown in fig. 2 to 5), the sound emission rear side of the speaker assembly 12 is directed away from the sound emission hole 1113.

Further, the battery 14 is mainly used for supplying power to the speaker assembly 12, and the main board 15 is mainly used for controlling audio input/output of the speaker assembly 12, so that the speaker assembly 12 can convert input audio signals into sound output.

Referring again to fig. 1, the listening device 10 may also include an earplug 16. The ear plug 16 is connected to the housing assembly 11 and is configured to be inserted into the external ear canal of a user to facilitate the user wearing the listening device 10. The earplug 16 may be made of a material having elasticity, such as rubber or polyurethane. So set up, not only can improve the comfort level that the user wore listening device 10, can also increase the laminating degree between earplug 16 and the user's external auditory canal, and then increase the result of use of listening device 10.

Referring to fig. 2 to 5 together, fig. 2 is a schematic structural diagram of an embodiment in which a housing assembly, a speaker assembly, and a bracket are mutually matched in the present application, fig. 3 is a schematic structural diagram of another embodiment in which a housing assembly, a speaker assembly, and a bracket are mutually matched in the present application, fig. 4 is a schematic structural diagram of another embodiment in which a housing assembly, a speaker assembly, and a bracket are mutually matched in the present application, and fig. 5 is a schematic structural diagram of another embodiment in which a housing assembly, a speaker assembly, and a bracket are mutually matched in the present application.

As shown in fig. 2, the speaker assembly 12 is loaded on the support 13, and the speaker assembly 12 and the support 13 together define an independent rear acoustic chamber 100. In this case, the wall of the separate rear sound chamber 100 comprises the speaker assembly 12 and the support 13. Further, the mating surface between the speaker assembly 12 and the bracket 13 may be provided with a sealing member 17 to increase the tightness of the independent rear sound cavity of the speaker assembly 12. The sealing member 17 may be foam, silica gel, or the like, or may be a sealant, or the like.

As shown in fig. 3, the speaker assembly 12 is loaded on the housing assembly 11, a gap is left between the speaker assembly 12 and the bracket 13, and the housing assembly 11, the speaker assembly 12 and the bracket 13 together define an independent rear sound cavity 100. At this time, the wall of the independent rear sound chamber 100 includes a housing assembly 11, a speaker assembly 12, and a bracket 13. Further, the matching surface between the speaker assembly 12 and the housing assembly 11, and the matching surface between the bracket 13 and the housing assembly 11 may be further provided with a sealing member 17 to increase the tightness of the independent rear sound cavity of the speaker assembly 12.

As shown in fig. 4, the speaker assembly 12 is loaded on the housing assembly 11 and the bracket 13, and the housing assembly 11, the speaker assembly 12 and the bracket 13 together define a separate rear acoustic chamber 100. At this time, the wall of the independent rear sound chamber 100 includes a housing assembly 11, a speaker assembly 12, and a bracket 13. Further, the matching surface between the speaker assembly 12 and the housing assembly 11, and the matching surface between the bracket 13 and the housing assembly 11 may be further provided with a sealing member 17 to increase the tightness of the independent rear sound cavity of the speaker assembly 12.

As shown in fig. 5, the bracket 13 is provided with a relief structure such as a groove or a through hole, and the speaker assembly 12 is not only loaded on the housing assembly 11 and the bracket 13, but also partially embedded in the bracket 13 via the relief structure. Similarly, the housing assembly 11, together with the speaker assembly 12 and the support 13, define a separate rear acoustic chamber 100. At this time, the wall of the independent rear sound chamber 100 includes a housing assembly 11, a speaker assembly 12, and a bracket 13. Further, the matching surface between the speaker assembly 12 and the housing assembly 11, and the matching surface between the bracket 13 and the housing assembly 11 may be further provided with a sealing member 17 to increase the tightness of the independent rear sound cavity of the speaker assembly 12.

It should be noted that: in the above-described structure shown in fig. 2 to 5, in addition to the independent rear sound chamber 100 of the speaker assembly 12, a front sound chamber 200 of the speaker assembly 12 is correspondingly formed in the sound-emitting front of the speaker assembly 12. The front sound cavity 200 is mainly formed by the speaker assembly 12 and the housing assembly 11, and the front sound cavity 200 is separated from the independent rear sound cavity 100 by the speaker assembly 12.

Taking music sound as an example, the rear sound cavity mainly affects the low-frequency part of the music sound, and the front sound cavity 14 mainly affects the medium-high frequency part of the music sound; while the low frequency part of the music sound has a large influence on the sound quality. Generally, the lower frequency peaks in the frequency response curve are more left, the more prominent the bass sounds, and the subjectively perceived musical sounds are more pleasant. Theoretically, when designing the rear acoustic cavity of the speaker assembly 12, the volume of the rear acoustic cavity should be as large as possible so that the low frequency peak in the frequency response curve is constantly shifted to the left, thereby constantly improving the low frequency characteristics of the musical sound and making the musical sound more pleasant to hear. However, the listening device 10 is often limited in weight and volume, and structural components such as the battery 14 and the main board 15 are also required, so that the sound cavity cannot be infinitely large behind the listening device. Moreover, in the related art, the space where the battery, the main board and the like are located is often intersected or overlapped with the rear sound cavity of the speaker assembly, so that the rear sound cavity of the speaker assembly is not an independent space, and the rear sound cavity is easily affected by the processing precision and the assembly precision of the battery, the main board and the like, and further the consistency of the acoustic curve of the speaker assembly is poor.

Thus, the structure shown in fig. 2 and 3 facilitates further enlargement of the volume thereof in case of realizing a separate rear acoustic chamber; the structures shown in fig. 4 and 5 are beneficial to the realization of the independent rear acoustic cavity, and the volume of the independent rear acoustic cavity is compatible with the arrangement requirements of other structural members. In other words, the structure shown in fig. 4 and 5 can also increase the compactness of the listening device 10 in structure to a certain extent, i.e. reduce the overall volume of the listening device 10, while ensuring a certain volume of the independent rear sound cavity of the speaker assembly 12, thereby facilitating the compact design of the listening device 10.

Referring to fig. 6 and 7 together, fig. 6 is a schematic structural view of an embodiment of the bracket in fig. 1, and fig. 7 is a schematic structural view of the bracket in fig. 6 from another view angle. It should be noted that: if the stent shown in fig. 6 is simply considered to be primarily illustrative of its front-side configuration, the stent shown in fig. 7 may be simply considered to be primarily illustrative of its back-side configuration. Further, fig. 7 can be a schematic cross-sectional view of the stent of fig. 6 along direction VII-VII.

As shown in fig. 6, the bracket 13 may include a mounting portion 131 and a circumferential portion 132 connected to the mounting portion 131. The mounting portion 131 is provided with an escape through hole 1311 that is engaged with the speaker assembly 12, so that the speaker assembly 12 can be partially fitted to the bracket 13 through the escape through hole 1311. Further, the peripheral portion 132 is primarily fixedly connected to the housing assembly 11 and may be partially connected to the speaker assembly 12. The arrangement is such that when the support 13, speaker assembly 12 is disposed within the interior of the housing assembly 11, together with the support 13, speaker assembly 12, define a separate rear acoustic chamber 100. At this time, the battery 14, the main board 15 and other structural members may be disposed on a side of the mounting portion 131 away from the speaker assembly 12, so as to separate the rear acoustic cavity of the speaker assembly 12 from the battery 14 and the main board 15, so that the rear acoustic cavity of the speaker assembly 12 is a relatively independent space, that is, the independent rear acoustic cavity 100.

Further, the avoidance via 1311 may include a first avoidance region 1312 and a second avoidance region 1313. The first avoidance area 1312 is mainly used for avoiding the main body of the speaker assembly 12 (specifically, the driving portion 121 mentioned later), and the second avoidance area 1313 is mainly used for avoiding the connection port of the speaker assembly 12 (specifically, the electrode portion 123 mentioned later), which will be exemplarily described later in detail.

Referring to fig. 6 again, the bracket 13 may further include a limiting portion 133 connected to the mounting portion 131, and the limiting portion 133 is disposed along a circumferential direction of the avoiding through hole 1311 and may form a first receiving area 134 and a second receiving area 135 with the circumferential portion 132. The first receiving area 134 is close to the avoiding through hole 1311, and the second receiving area 135 is far from the avoiding through hole 1311. Thus, the first receiving area 134 is mainly used for receiving the battery 14, and the second receiving area 135 is mainly used for receiving the motherboard 15.

Further, as shown in fig. 1, the battery 14 may have a columnar shape, and the main plate 15 may have a plate shape. At this time, the battery 14 may be disposed in the first accommodation region 134 along the axial direction thereof, and the main board 15 may be disposed in the second accommodation region 135 along the length direction or the width direction thereof. In other words, the battery 14 and the main board 15 may be inserted side by side at corresponding positions of the bracket 13.

It is worth noting that: since the circumferential portion 132 and the stopper portion 133 may both extend along the axial direction of the battery 14, the battery 14 may be surrounded (partially) by the circumferential portion 132 and the stopper portion 133 in the circumferential direction thereof, and thus the stability of the arrangement of the battery 14 on the bracket 13 may be increased. Similarly, the main plate 15 can also be (partially) surrounded by the circumferential portion 132 and the stopper portion 133, so that the stability of the main plate 15 disposed on the bracket 13 can be increased.

Further, since the main board 15 generally integrates a plurality of electronic components (not shown in fig. 1), the height of each electronic component on the main board 15 may be different, so that the electronic components on the main board 15 may interfere with the limiting portion 133 structurally. For this purpose, the limiting portion 133 may have a notch 1331, and the notch 1331 enables the first receiving area 134 and the second receiving area 135 to communicate with each other, so that when the motherboard 15 is disposed in the second receiving area 135 along the length direction or the width direction of the motherboard 15, the notch 1331 can avoid the electronic components on the motherboard 15. In addition, the gap 1331 can also reduce the distance between the battery 14 and the main board 15, thereby increasing the structural compactness of the listening device 10 to some extent. Of course, the notch 1331 may also be used to configure a trace (e.g., a flexible circuit board) between the battery 14 and the motherboard 15.

Referring again to fig. 6, the position-limiting portion 133 may be divided into two portions disposed opposite to each other by the gap 1331. Further, the notch 1331 may also extend to the mounting portion 131.

As shown in fig. 7, the limiting portion 133 is further provided with a sub-cavity 1332, and the sub-cavity 1332 is communicated with the independent rear sound cavity 100, so as to increase the volume of the independent rear sound cavity of the speaker assembly 12, and further improve the bass effect of the speaker assembly 12. The limiting portion 133 can be divided into two oppositely arranged portions by the notch 1331, so that the auxiliary cavity 1332 can also be two oppositely arranged portions, and the two auxiliary cavities 1332 are communicated with the independent rear sound cavity 100.

Further, except for a portion where the first avoidance region 1312 and the second avoidance region 1313 communicate with each other, as shown in fig. 6 and 7, the first avoidance region 1312 is mainly surrounded by the mounting portion 131, and the second avoidance region 1313 is mainly surrounded by the ring peripheral portion 132. At this time, in order to ensure the sealing property when the speaker module 12 is fitted to the bracket 13 through the escape through hole 1311, the other surface of the mounting portion 131 facing away from the stopper portion 133 is further provided with a sealing portion 136. The sealing portion 136 protrudes from the mounting portion 131, so that not only the mounting portion 131 and the speaker assembly 12 can be assisted to form a sealing structure, but also a gap (i.e., a partial structure of the independent rear sound cavity 100) can be formed between the mounting portion 131 and the speaker assembly 12. Further, the opening orientation of the sub-cavity 1332 may coincide with the direction of the projection of the sealing portion 136.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of the speaker assembly of fig. 1.

As shown in fig. 8, the speaker assembly 12 may include a driving part 121, a vibration part 122, and an electrode part 123. The driving unit 121 and the electrode unit 123 may be located on the same side of the vibration unit 122. Further, the orthographic projection of the driving part 121 on the vibrating part 122 may fall entirely on the vibrating part 122.

Generally, when the speaker assembly 12 vibrates to produce sound, the sound waves propagating forward and backward are in opposite phase. When the frequency of the sound wave is low, the propagation of the sound wave has strong diffraction capability and almost no directivity, so that the rear sound wave of the speaker assembly 12 can be wound to the front of the diaphragm (or cone) thereof, and the sound at a certain point in front of the speaker assembly 12 is a combination of the front sound wave and the rear sound wave. The two sound waves have opposite phases, so that the sound pressure of the synthesized sound at the point is reduced and even is zero, and the sound cannot be heard, which is called as an acoustic short circuit.

Further, the speaker assembly 12 may also be provided with an acoustic short circuit hole 124, and the acoustic short circuit hole 124 is mainly used for communicating the front sound chamber 200 with the independent rear sound chamber 100. The acoustic short circuit hole 124 mainly utilizes the interference principle of sound waves, i.e. the sound waves have opposite phases and are superimposed to reduce the amplitude, so as to improve the acoustic performance (especially the low-frequency characteristics of sound) of the listening device 10. In this embodiment, the acoustic short circuit hole 124 may be provided in the vibration portion 122. Wherein the orthographic projection of the acoustic short circuit hole 124 on the support 13 does not fall on the second avoidance zone 1313 nor on the sealing portion 136, so that the acoustic short circuit hole 124 enables communication of the front acoustic chamber 200 with the separate rear acoustic chamber 100.

Referring to fig. 9 and 10 together, fig. 9 is a schematic structural view of the speaker assembly and the bracket of fig. 1 after assembly, and fig. 10 is a schematic structural view of another view angle of the structure shown in fig. 9.

As shown in fig. 9, the driving portion 121 may be partially embedded in the bracket 13 (specifically, the mounting portion 131 thereof) via the first escape area 1312. The surface of the driving portion 121 away from the vibrating portion 122 may be flush with or slightly lower than the mounting portion 131. The arrangement is such that after the bracket 13 receives the battery 14 through the first receiving area 134, no structural interference occurs between the battery 14 and the speaker assembly 12.

Further, the electrode portion 123 may be exposed via the second avoidance region 1313. With this arrangement, after the bracket 13 accommodates the battery 14 through the first accommodating area 134, the electrode portion 123 can be directly electrically connected to the battery 14 through the second avoiding area 1313, so as to shorten the routing distance between the speaker assembly 12 and the battery 14. In this case, the second avoidance area 1313 is mainly used to avoid the tracks of the speaker assembly 12.

Based on the above detailed description, after the speaker assembly 12 is assembled with the bracket 13, as shown in fig. 9 and 10, the mounting portion 131 may abut against the driving portion 121, so that a mating surface can be formed therebetween; the sealing portion 136 may abut against the vibration portion 122 and the driving portion 121, so that a matching surface can be formed therebetween, so as to dispose the sealing member 17, for example, by performing a dispensing process on the matching surface. So configured, the sealing between the speaker assembly 12 and the support 13 can be increased to the greatest extent, and thus the sealing of the independent rear sound chamber 100 can be increased. Further, since the sealing portion 136 protrudes from the mounting portion 131, a gap is formed between the speaker assembly 12 and the bracket 13, which is an important component of the independent rear sound chamber 100, as shown in fig. 10. Obviously, by properly designing the structure of the sealing portion 136, the shape and size of the independent rear sound chamber 100 can be changed, thereby affecting the bass effect of the speaker assembly 12.

Referring to fig. 11 and 12 together, fig. 11 is a schematic structural view of an embodiment of the front case of fig. 1, and fig. 12 is a schematic sectional view of the assembled structural members of fig. 1 except for the rear case. It should be noted that: the schematic cross-sectional structure shown in fig. 12 can be referred to the direction shown by XII-XII in fig. 8.

As shown in fig. 1, the housing assembly 11 may include a front shell 111 and a rear shell 112, which may be connected by one or a combination of clamping, gluing, screwing, and the like.

As shown in fig. 11, the front case 111 may include a bottom wall 1111 and an annular peripheral wall 1112. One end of the annular peripheral wall 1112 is integrally connected to the bottom wall 1111, and the other end is open. The rear housing 112 covers the open end of the annular peripheral wall 1112 and is disposed opposite the bottom wall 1111 to form an interior cavity of the housing assembly 11.

The bottom wall 1111 is provided with sound outlet holes 1113 to facilitate the communication of the front sound chamber 200 of the speaker assembly 12 with the external environment and thus the transmission of its sound. Further, as shown in fig. 12, the bottom wall 1111 may be provided with an annular connecting portion 1114 on a surface facing away from the annular peripheral wall 1112, and the connecting portion 1114 is mainly used for connecting with the earplug 16. Wherein the connecting portion 1114 and the bottom wall 1111 may be integrally connected and communicate with the front sound chamber 200 via the sound outlet hole 1113.

It should be noted that: the sound outlet holes 1113 may occupy a substantial portion of the bottom wall 1111, for example, with an area ratio of greater than 90%. At this time, the bottom wall 1111 may be simply regarded as a transitional connection portion between the annular peripheral wall 1112 and the connecting portion 1114.

Further, the inner wall of the annular peripheral wall 1112 may be provided with a first boss 1115. When the speaker assembly 12 is disposed in the inner cavity of the housing assembly 11, the first bosses 1115 can form a matching surface with the front housing 111, thereby facilitating dispensing. Similarly, the inner wall of the annular peripheral wall 1112 may also be provided with a second boss 1116. The second bosses 1116 are further away from the bottom wall 1111 than the first bosses 1115, so that when the bracket 13 is also disposed in the inner cavity of the housing assembly 11, the second bosses 1114 can form a matching surface with the front housing 111, thereby facilitating the dispensing process.

It should be noted that: the first bosses 1115 and the second bosses 1116 may be discontinuous in the circumferential direction of the annular peripheral wall 1112, but mating surfaces between the speaker assembly 12 and the front case 111 and mating surfaces between the bracket 13 and the front case 111 may be subjected to a dispensing process for the sealing of the front sound chamber 200 and the rear sound chamber 100 of the speaker assembly 12. Further, a snap structure (not labeled in the figures) is further disposed between the bracket 13 and the front shell 111 to limit the degree of freedom of the speaker assembly 12 after the bracket 13 is snapped to the front shell 111. In other words, the speaker assembly 12 may be press-fitted to the front case 111 via the bracket 13.

Further, the front shell 111 is further provided with a sound outlet 1117, and the sound outlet 1117 mainly enables the independent rear sound cavity 100 to communicate with the external environment. So configured, the sound pressure of the independent rear sound cavity 100 can vary with the vibration of the speaker assembly 12, thereby improving the acoustic performance (especially the low frequency characteristics of the sound) of the listening device 10.

Referring again to fig. 11 and 12, the plane in which the open end of the annular peripheral wall 1112 is located (as indicated by the inclined chain line in fig. 12) may be inclined with respect to the plane in which the bottom wall 1111 is located (as indicated by the horizontal chain line in fig. 12). For example: the angle (shown by θ in fig. 12) between the plane of the open end of the annular peripheral wall 1112 and the plane of the bottom wall 1111 is less than or equal to 60 °. So set up for independent back sound chamber 100 can mainly be speaker subassembly 12, support 13 and preceding shell 111 construct jointly to reduce the scope that needs to carry out some glue processing between each structure, and then increase the leakproofness of independent back sound chamber 100.

In the above manner, for the listening device 10, the battery 14, the main board 15 and other structural components are disposed on the side of the speaker assembly 12 and the bracket 13 away from the front sound cavity 200, so as to separate the rear sound cavity of the speaker assembly 12 from the battery 14 and the main board 15, so that the rear sound cavity 100 of the speaker assembly 12 is a relatively independent space, i.e. the independent rear sound cavity 100, thereby reducing the influence of the processing precision and the assembly precision of other structural components on the rear sound cavity to the maximum extent, and further improving the acoustic performance (especially the low-frequency characteristic of the sound) of the listening device 10. Further, the battery 14 and the main board 15 are also fixed at corresponding positions on the stand 13, so as to increase the structural reliability of the listening device 10.

Based on the above detailed description, the listening device 10 of the present application is formed with not only the front sound chamber 200 and the separate rear sound chamber 100 but also the sound outlet hole 1113, the acoustic short circuit hole 124, and the sound leakage hole 1117. The sound outlet 1113 mainly enables the front sound cavity 200 to communicate with the ear canal of the user, so that the user can hear the sound emitted from the speaker assembly 12; the acoustic short circuit hole 124 mainly enables the front acoustic cavity 200 to communicate with the independent rear acoustic cavity 100, so that the front and rear acoustic waves interfere to improve the low-frequency characteristics of the sound; the sound outlet 1117 mainly allows the isolated rear sound chamber 100 to communicate with the external environment, so that the sound pressure of the isolated rear sound chamber 100 varies with the vibration of the speaker assembly 12 to improve the low frequency characteristics of the sound. So configured, the present application improves the acoustic performance of the listening device 10 from multiple dimensions, particularly improving the low frequency characteristics of the sound. Further, the present application is directed to design the rear sound cavity of the speaker assembly 12 as a cavity structure (i.e. the independent rear sound cavity 100) with a predetermined volume to minimize the influence of the processing precision and the assembling precision of other structural components such as the battery 14 and the main board 15 on the rear sound cavity of the speaker assembly 12, thereby improving the acoustic performance (especially the low-frequency characteristics of sound) of the listening device 10.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes that can be directly or indirectly applied to other related technologies, which are made by using the contents of the present specification and the accompanying drawings, are also included in the scope of the present application.

Claims (17)

1. A stand for a listening device, the listening device including a housing assembly defining an interior cavity and a speaker assembly disposed in the interior cavity of the housing assembly,

the support is configured in the inner cavity of the shell component and is positioned behind the sound outlet of the loudspeaker component, the loudspeaker component is provided with an independent rear sound cavity with a preset volume, and the wall of the independent rear sound cavity comprises the support.

2. The bracket of claim 1, wherein the speaker assembly is carried by the bracket, the speaker assembly and the bracket together defining the separate rear acoustic chamber.

3. The bracket of claim 1, wherein the speaker assembly is carried by the bracket and the housing assembly, the speaker assembly, the bracket and the housing assembly collectively defining the separate rear acoustic chamber.

4. A support according to claim 2 or 3, wherein the support comprises a mounting portion in which the loudspeaker assembly is partially embedded.

5. The bracket of claim 4, further comprising a peripheral portion connected to the mounting portion, the mounting portion being provided with an avoiding through hole cooperating with the speaker assembly, the peripheral portion being adapted to be fixedly connected to the housing assembly.

6. The bracket according to claim 5, wherein the avoidance through hole comprises a first avoidance area and a second avoidance area, the first avoidance area is used for avoiding the main body of the loudspeaker assembly, and the second avoidance area is used for avoiding the wiring port of the loudspeaker assembly.

7. The rack according to claim 5, further comprising a limiting portion connected to the mounting portion, wherein the limiting portion is disposed along a circumferential direction of the avoiding through hole and forms a first receiving area and a second receiving area with the circumferential portion, the first receiving area is close to the avoiding through hole, the second receiving area is far from the avoiding through hole, the first receiving area is used for receiving a battery of the listening device, and the second receiving area is used for receiving a main board of the listening device.

8. The bracket of claim 7, wherein the limiting portion is provided with a notch, and the notch enables the first accommodating area and the second accommodating area to be communicated.

9. The holder according to claim 7, wherein the limiting portion is provided with an auxiliary chamber, and the auxiliary chamber is communicated with the independent rear acoustic chamber.

10. A listening device comprising a housing assembly defining an interior cavity, a speaker assembly and a stand disposed within the interior cavity of the housing assembly, the stand being positioned behind a sound outlet of the speaker assembly, the speaker assembly having a discrete rear sound cavity of a predetermined volume, a wall of the discrete rear sound cavity comprising the stand.

11. The listening device of claim 10 wherein the speaker assembly is carried by the frame, the speaker assembly and the frame together defining the discrete rear acoustic cavity.

12. The listening device of claim 10 wherein the speaker assembly is carried by the cradle and the housing assembly, the speaker assembly, the cradle and the housing assembly collectively defining the self-contained rear acoustic cavity.

13. The listening device of claim 10 wherein the frame includes a mounting portion and a peripheral portion connected to the mounting portion, the mounting portion being provided with an escape through hole that mates with the speaker assembly such that the speaker assembly is partially embedded in the frame via the escape through hole, the peripheral portion being connected to the housing assembly.

14. The listening device of claim 13, wherein the stand further comprises a battery and a main board, the stand further comprises a stopper portion connected to the mounting portion, the stopper portion is disposed along a circumferential direction of the access hole and forms a first receiving area and a second receiving area with the circumferential portion, the first receiving area is close to the access hole, the second receiving area is far from the access hole, the battery is disposed in the first receiving area, and the main board is disposed in the second receiving area.

15. The listening device of claim 10 wherein the speaker assembly is provided with an acoustic shorting port for communicating the front acoustic cavity of the speaker assembly with the separate rear acoustic cavity.

16. The listening device of claim 10 wherein the housing assembly comprises a front housing and a rear housing, the front housing comprising a bottom wall and an annular peripheral wall, the annular peripheral wall being integrally connected at one end to the bottom wall and being open at the other end, the rear housing being disposed at the open end of the annular peripheral wall and being opposite the bottom wall to form an interior cavity of the housing assembly.

17. The listening device of claim 16 wherein an angle between a plane of the open end of the annular peripheral wall and a plane of the bottom wall is less than or equal to 60 °.

Images