Loudspeaker box

Abstract

The invention provides a loudspeaker box which comprises a shell with a containing space and a loudspeaker single body contained in the containing space, a sound guiding channel for guiding sound emitted by the loudspeaker single body out of the shell is arranged on the side face of the shell, and the shell comprises a bottom wall, a top wall opposite to the bottom wall and a side wall connected with the bottom wall and the top wall. The loudspeaker single body comprises a basin frame and a vibrating diaphragm fixed on the basin frame, a front sound cavity is formed between the vibrating diaphragm and the bottom wall, one side, close to the sound guide channel, of the loudspeaker single body is connected with the side wall to enable the front sound cavity to be communicated with the sound guide channel, and a sunken part communicated with the sound guide channel is arranged at the position, close to the position where the loudspeaker single body abuts against the side wall, of the vibrating diaphragm; the recessed part enables the height of one side, close to the sound guide channel, of the front sound cavity to be larger than that of one side, away from the sound guide channel, of the front sound cavity. The height of the sound guide channel of the loudspeaker box is larger, and sound making is smoother.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electroacoustics, and in particular to a loudspeaker cabinet. BACKGROUND

[0002] A loudspeaker cabinet mainly comprises a loudspeaker unit, a housing, and a sound guide channel for guiding sound from the loudspeaker unit out of the housing. Generally, the sound guide channel formed between the diaphragm and the housing is narrow, which may cause low frequency response distortion and uneven sound field distribution. Specifically, low frequency sound waves (e.g. bass) require greater air displacement and longer wavelengths, while the narrow sound guide channel may limit air flow, resulting in ineffective release of low frequency energy. In addition, the narrow channel may block the airflow generated by the diaphragm vibration, resulting in uneven radiation of low frequency sound waves and a "muffled" or "muddy" listening experience. At the same time, the narrow channel may conflict with the resonant frequency inside the cabinet, exacerbating the non-linear distortion of the low frequency band (e.g. "hum" or "rumble"). Furthermore, if the channel is narrow and poorly designed, the sound waves of different frequencies may produce sound pressure level differences due to reflection and interference when propagating in the channel, resulting in uneven sound field distribution in the listening area (e.g. too strong or too weak bass in some positions). The narrow channel may also enhance the directivity of sound wave radiation, resulting in uneven "focusing" or "scattering" of the sound field and affecting the immersion of the stereo sound.

[0003] The narrow channel may also directly affect the movement of the diaphragm, causing it to move smoothly in the low frequency band, producing mechanical friction or non-linear vibration. When air passes through the narrow channel, it may produce turbulent noise due to excessive speed, which, when superimposed with the low frequency signal, may form an abnormal sound similar to "knocking". Ultimately, this may result in a decrease in audio output quality and the production of a piano sound, leading to poor sound quality of the loudspeaker cabinet.

[0004] Therefore, it is necessary to provide a new loudspeaker cabinet to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a loudspeaker cabinet with a larger height of the sound guide channel and more unobstructed sound emission.

[0006] In order to achieve the above object, the technical scheme of the present application is as follows: a loudspeaker box, comprising a shell having a receiving space and a loudspeaker unit received in the receiving space, a sound guide channel is arranged on the side of the shell to guide the sound emitted by the loudspeaker unit out of the shell, the shell comprises a bottom wall, a top wall opposite to the bottom wall, and a side wall connecting the bottom wall and the top wall, the loudspeaker unit comprises a basket and a diaphragm fixed on the basket, a front sound cavity is formed between the diaphragm and the bottom wall, the side of the loudspeaker unit close to the sound guide channel is connected with the side wall, the front sound cavity is communicated with the sound guide channel, the diaphragm is provided with a recessed portion communicated with the sound guide channel at the position close to the abutment of the loudspeaker unit and the side wall, and the height of the side of the front sound cavity close to the sound guide channel is greater than the height of the side of the front sound cavity away from the sound guide channel.

[0007] Preferably, part of the diaphragm is bent and recessed in the direction away from the bottom wall to form at least part of the recessed portion.

[0008] Preferably, the surface part of the diaphragm towards the bottom wall of the basket is provided with a hollow portion, and the hollow portion extends from the position where the diaphragm is connected with the side wall to form at least part of the recessed portion.

[0009] Preferably, part of the diaphragm is recessed from the surface of the diaphragm towards the bottom wall to form the recessed portion.

[0010] Preferably, the surface of the basket towards the bottom wall is recessed to form a groove matched with the recessed portion.

[0011] Preferably, the ratio of the recessed depth of the groove to the height of the basket ranges from greater than 0 to less than or equal to 0.3.

[0012] Preferably, the diaphragm comprises a dome and a folded ring surrounding the dome, the folded ring comprises a first folded ring part and a second folded ring part connected with the side wall, the first folded ring part comprises a first fixed part connected with the dome, a first folded ring part extending outwardly from the first fixed part, and a first support part fixedly supported on the basket, the second folded ring part comprises a second fixed part connected with the dome, a second folded ring part located outside the second fixed part, a second support part fixedly supported on the basket, and a combination part connecting the second folded ring part and the second support part, and the recessed portion is located between the second support part and the combination part.

[0013] Preferably, the first folded ring part is recessed towards the top wall, and the second folded ring part is recessed towards the top wall.

[0014] Preferably, the second folded ring part comprises a first elastic part connected with the second fixed part and a second elastic part connected with the combined part, and the extension height of the second elastic part is smaller than the extension height of the first elastic part.

[0015] Preferably, the loudspeaker unit comprises an elastic support fixed with the yoke, the ball top comprises a support arm extending towards the top wall and fixed with the elastic support, and the first fixed part of the first folded ring part is provided with a fixed arm fixedly attached with the support arm.

[0016] Preferably, the side wall comprises an outer wall surrounding the accommodation space together with the top wall and the bottom wall, and a partition extending from the outer wall towards the loudspeaker unit and abutting against the loudspeaker unit, and the diaphragm is abutted against the partition on the side close to the sound guide channel.

[0017] Compared with the related art, the loudspeaker box has the beneficial effects that: a recess is formed on the side of the diaphragm close to the sound guide channel, so that the height of the front sound cavity on the side close to the sound guide channel is greater than the height on the side far from the sound guide channel, the size of the connection between the front sound cavity and the sound guide channel is increased, so that the size of the sound guide channel can also be made larger, so that the sound emission of the loudspeaker box is smoother, and the sound quality effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a perspective view of a loudspeaker box according to an embodiment of the present application; Figure 2 FIG. 2 is a partially exploded view of the loudspeaker box as shown in FIG. 1; Figure 1 Figure 3 FIG. 3 is an exploded view of the loudspeaker box as shown in FIG. 1; Figure 1 Figure 4 FIG. 4 is a sectional view along line A-A in FIG. 1; Figure 1 Figure 5 FIG. 5 is a sectional view along line B-B in FIG. 1; Figure 1 Figure 6 FIG. 6 is an enlarged view of part A in FIG. 1; Figure 4 Figure 7 FIG. 7 is an exploded view of the diaphragm and the yoke in the loudspeaker box according to the embodiment of the present application; Figure 8 FIG. 8 is a sectional view of part of the loudspeaker box according to an embodiment of the present application; Figure 9 FIG. 9 is an exploded view of the diaphragm and the yoke in the loudspeaker box according to the embodiment of the present application; Figure 10 ​​​​​Figure 3 is a sectional view of a part of the structure of the loudspeaker box of the third embodiment of the present application; Figure 11 Figure 4 is an exploded view of the diaphragm and the frame in the loudspeaker box of the third embodiment of the present application; Figure 12 Figure 5 is a sectional view of a part of the structure of the loudspeaker box of the fourth embodiment of the present application; Figure 13 Figure 6 is an exploded view of the diaphragm and the frame in the loudspeaker box of the fourth embodiment of the present application; Figure 14 Figure 7 is a sectional view of a part of the structure of the loudspeaker box of the fifth embodiment of the present application; Figure 15 Figure 8 is an exploded view of the diaphragm and the frame in the loudspeaker box of the fifth embodiment of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-7 The first embodiment of the present application provides a loudspeaker box 100, which comprises a shell 101 having a receiving space 10 and a loudspeaker unit 102 received in the receiving space 10, and a sound guide channel 103 is arranged on the side of the shell 101 to guide the sound emitted by the loudspeaker unit 102 out of the shell 101.

[0021] The shell 101 comprises a bottom wall 1011, a top wall 1012 opposite to the bottom wall 1011, and a side wall 1013 connecting the bottom wall 1011 and the top wall 1012. In the present embodiment, the bottom wall 1011 and the side wall 1013 are in an integral structure, and in other embodiments, the top wall 1012 and the side wall 1013 can also be in an integral structure. In other embodiments, there can be a case that the bottom wall 1011 is on the top and the top wall 1012 is on the bottom due to different installation directions of the loudspeaker unit 102, and in this case, the name does not limit the position of the components.

[0022] The bottom wall 1011 comprises a mounting seat 1014 extending from the bottom wall 1011 to the top wall 1012 and abutting against the loudspeaker unit 102, and the mounting seat 1014 is used for fixedly mounting the loudspeaker unit 102.

[0023] The side wall 1013 comprises an outer wall 1015 which, together with the top wall 1012 and the bottom wall 1011, encloses the accommodation space 10, and a partition 1016 which extends from the outer wall 1015 to the speaker unit 102 and abuts against the speaker unit 102. In the embodiment, the partition 1016 encloses the sound guide channel 103 together with the bottom wall 1011. In other embodiments, the partition 1016 can directly enclose the sound guide channel 103.

[0024] The speaker unit 102 comprises a basket 1, a diaphragm 2 fixed to the basket 1, a voice coil 3 for driving the diaphragm 2 to vibrate and produce sound, a magnetic circuit system 4 fixed to the basket 1, an elastic support 5 fixed to the basket 1 and having a conductive function, a conductive member 6 electrically connected to the elastic support 5, a venting partition 7 fixed to the magnetic circuit system 4, and a gasket 8 located between the magnetic circuit system 4 and the top wall 1012. The basket 1, the diaphragm 2, and the magnetic circuit system 4 together enclose a back cavity 1021 of the speaker unit 102. It should be noted that the basket 1 disclosed in the present application is an element supporting the magnetic circuit system 4 or the diaphragm 2 in the embodiment, and is independent of the magnetic circuit system 4. In fact, in existing speaker unit technology, the diaphragm 2 is directly fixed to the periphery of the magnetic circuit system 4, and the independent basket 1 is omitted. This kind of technology is still applicable to the technical solution disclosed in the present application, that is, the part of the magnetic circuit system 4 for supporting the diaphragm 2 can also be referred to as the basket 1 disclosed in the present application. In addition, according to actual needs, the basket 1 can also be configured to support the diaphragm 2 but not the magnetic circuit system 4.

[0025] The diaphragm 2 and the bottom wall 1011 form a front sound cavity 104, and the side of the diaphragm 2 close to the sound guide channel 103 is connected to the partition 1016 so that the front sound cavity 104 and the sound guide channel 103 are in communication. The diaphragm 2 is provided with a recess 105 close to the position where the speaker unit 102 abuts against the partition 1016, and the recess 105 is in communication with the sound guide channel 103. The recess 105 makes the height of the side of the front sound cavity 104 close to the sound guide channel 103 greater than the height of the side of the front sound cavity 104 away from the sound guide channel 103.

[0026] Part of the diaphragm 2 is bent and recessed in a direction away from the bottom wall 1011 to form the recessed portion 105. In this embodiment, further, the basket 1 is recessed from the surface of the basket 1 towards the bottom wall 1011 to form a groove 11 matched with the recessed portion 105. Due to the provision of the groove 11, the depth of the recessed portion 105 on the diaphragm 2 can be further increased. Alternatively, the diaphragm 2 is bent and recessed with unchanged thickness, and the recessed depth of the groove 11 and the height of the basket 1 have a ratio range of greater than or equal to 0 and less than or equal to 0.3.

[0027] Specifically, the diaphragm 2 includes a dome 21 and a folded ring 22 surrounding the dome 21, the folded ring 22 includes a first folded ring portion 221 and a second folded ring portion 222 abutting against the partition 1016, the first folded ring portion 221 includes a first fixed portion 2211 connected with the dome 21, a first folded ring portion 2212 extending outwardly from the first fixed portion 2211, and a first support portion 2213 fixedly supported on the basket 1, the second folded ring portion 222 includes a second fixed portion 2221 connected with the dome 21, a second folded ring portion 2222 located outwardly of the second fixed portion 2221, a second support portion 2223 fixedly supported on the basket 1, and a connecting portion 2224 connecting the second folded ring portion 2222 and the second support portion 2223, and the recessed portion 105 is located at the second support portion 2223 and the connecting portion 2224.

[0028] Specifically, the first folded ring portion 2212 is recessed towards the top wall 1012, and the second folded ring portion 2222 is recessed towards the top wall 1012.

[0029] Specifically, the second folded ring portion 2222 includes a first elastic portion 2225 connected with the second fixed portion 2221 and a second elastic portion 2226 connected with the connecting portion 2224, and the extension height h2 of the second elastic portion 2226 is less than the extension height h1 of the first elastic portion 2225.

[0030] Specifically, the second support portion 2223 includes a mounting portion 2227 covering the surface of the basket 1 opposite to the bottom wall 1011, and a flange portion 2228 bent and extending from the mounting portion 2227 towards the top wall 1012 and adhering to the basket 1, the flange portion 2228 is clamped between the basket 1 and the partition 1016, and is used to improve the stability of the loudspeaker unit 102 assembly. In other embodiments, the second support portion 2223 can also not include the flange portion 2228.

[0031] The dome 21 comprises a support arm 211 extending towards the top wall 1012 and fixed to the elastic support 5, and a first fixed part 2211 of the first folded ring part 221 is provided with a fixed arm 2214 fixedly attached to the support arm 211.

[0032] The voice coil 3 has a voice coil lead wire 31 electrically connected to the elastic support 5, and an external circuit supplies power to the elastic support 5 through the conductive part 6, thereby supplying power to the voice coil 3 through the elastic support 5. The voice coil 3 is provided with a concave groove 32 formed inwardly from the outer surface thereof, which is used to adjust the density of the voice coil 3 or the gap between the voice coil 3 and the magnetic circuit system 4, so as to make the magnetic field distribution more uniform, reduce distortion and improve acoustic performance.

[0033] The magnetic circuit system 4 comprises a magnetic bowl 41, a center magnetic steel 42 fixed to the magnetic bowl 41, a secondary magnetic steel 43 arranged around the center magnetic steel 42, a first pole core 44 stacked on the center magnetic steel 42, and a second pole core 45 stacked on the secondary magnetic steel 43, the secondary magnetic steel 43 and the center magnetic steel 42 are spaced apart to form a magnetic gap 40, and the voice coil 3 is inserted into the magnetic gap 40.

[0034] One end of the elastic support 5 is clamped between the yoke 1 and the magnetic bowl 41, and the other end is connected to the diaphragm 2, specifically, the other end of the elastic support 5 is connected to the dome 21 to elastically support the diaphragm 2.

[0035] The conductive part 6 comprises a conductive part body part 61 and a connecting arm 62 extending from both ends of the conductive part body part 61 to the loudspeaker monomer 102 and electrically connected to the elastic support 5. Specifically, the conductive part 6 is accommodated in the accommodation space 10 and partially extends beyond the shell 101, the top wall 1012 comprises a boss 1017 extending towards the bottom wall 1011 and supporting the conductive part 6 near the conductive part 6, the boss 1017 is provided with a notch 1018 recessed towards the top wall 1012 and adapted to the conductive part 6, and the side wall 1013 is provided with a gap 1019 adapted to the conductive part 6 near the conductive part 6, so that the top wall 1012 and the side wall 1013 form a structure for clamping the conductive part 6.

[0036] The air-permeable isolation part 7 is arranged on opposite sides of the magnetic bowl 41, one end of the air-permeable isolation part 7 is fixed to the magnetic bowl 41, and the other end is fixed to the yoke 1, so that the back cavity 1021 of the loudspeaker monomer 102 is in communication with the outside, and at the same time, dust can be prevented from entering the back cavity 1021 of the loudspeaker monomer 102.

[0037] The gasket 8 is located between the top wall 1012 and the magnetic bowl 41, and the gasket 8 fixes the speaker unit 102 to the top wall 1012, and plays a role of buffering and damping and enhancing the stability of the connection between the shell 101 and the speaker unit 102.

[0038] In the embodiment, the vibrating diaphragm 2 is bent to form the recessed portion 105, and the yoke 1 is also correspondingly recessed to form the groove 11, and the recessed portion 105 and the groove 11 jointly increase the height of the front sound cavity 104 on the side close to the sound guide channel 103, thereby increasing the sound outlet height of the sound guide channel 103, making the sound outlet of the speaker box more smooth, and improving the sound quality effect.

[0039] As shown in Figure 8 and Figure 9 In the second embodiment of the present application, other structures are the same as those in the first embodiment, and the difference lies in that in the second embodiment, only the recessed portion 105a is formed on the vibrating diaphragm 2a, and the yoke 1a is not provided with a groove. Specifically, part of the second folded ring portion 2222a is bent to form the combined portion 2224a, and the recessed portion 105a is formed on the combined portion 2224a.

[0040] In the embodiment, the vibrating diaphragm 2a is bent to form the recessed portion 105a, and the recessed portion 105a is only formed on the combined portion 2224a. The recessed portion 105a increases the height of the front sound cavity 104a on the side close to the sound guide channel 103a, thereby increasing the sound outlet height of the sound guide channel 103a, making the sound outlet of the speaker box more smooth, and improving the sound quality effect.

[0041] As shown in Figure 10 and 11 In the third embodiment of the present application, other structures are the same as those in the first embodiment, and the difference lies in that part of the vibrating diaphragm 2b is cut to form the recessed portion 105b, and the yoke 1b is recessed from the surface of the yoke 1b close to the vibrating diaphragm 2b to form the groove 11b matched with the recessed portion 105b. Specifically, the second support portion of the vibrating diaphragm 2b is removed to form the hollow portion 20b, and part of the second folded ring portion 2222b can be further bent to form the combined portion 2224b, and the recessed portion 105b is formed on the combined portion 2224b and the hollow portion 20b. Alternatively, the second folded ring portion 2222b is bent to recess without changing the thickness of the vibrating diaphragm 2b, and the ratio of the recessed depth of the groove 11b to the height of the yoke 1b is greater than or equal to 0 and less than or equal to 0.3.

[0042] In the embodiment, the vibrating diaphragm 2b forms the hollow part 20b, the vibrating diaphragm 2b forms the combining part 2224b by bending the recess, the recess part 105b is formed on the hollow part 20b and the combining part 2224b, and the basin 1b also forms the groove 11b by bending. The recess part 105b and the groove 11b jointly increase the height of the front sound cavity 104b on the side close to the sound guide channel 103b, thereby increasing the sound outlet height of the sound guide channel 103b, making the sound outlet of the speaker box more smooth, and improving the sound quality effect. In other embodiments, the recess part 105b can be formed only on the hollow part 20b.

[0043] As shown in FIGS. 1 and 2, in the embodiment one of the present application, the vibrating diaphragm 2a forms the hollow part 20a, the recess part 105a is formed on the hollow part 20a, and the basin 1a forms the groove 11a. Figure 12 and 13 As shown in FIGS. 3 and 4, in the embodiment four of the present application, other structures are the same as those in the embodiment one, and the difference is that the recess part 105c is formed by cutting part of the vibrating diaphragm 2c, and the basin 1c is not provided with the groove. Specifically, the hollow part 20c is formed by removing the second support part of the vibrating diaphragm 2c, and the recess part 105c is formed on the hollow part 20c.

[0044] In the embodiment, the vibrating diaphragm 2c forms the hollow part 20c, the recess part 105c is formed on the hollow part 20c, and the recess part 105c increases the height of the front sound cavity 104c on the side close to the sound guide channel 103c, thereby increasing the sound outlet height of the sound guide channel 103c, making the sound outlet of the speaker box more smooth, and improving the sound quality effect. In other embodiments, part of the second bending ring part 2222c can be bent to form a combining part, the hollow part 20c is formed by removing the second support part of the vibrating diaphragm 2c, and the recess part 105c is formed on the combining part and the hollow part 20c.

[0045] As shown in FIGS. 5 and 6, in the embodiment five of the present application, other structures are the same as those in the embodiment one, and the difference is that the vibrating diaphragm 2d is thinned to form the recess part 105d, and the basin 1d is not provided with the groove. Specifically, the vibrating diaphragm 2d is recessed from the surface of the vibrating diaphragm 2d, so that the thickness of the second support part 2223d is less than the thickness of the first support part 2213d. Due to the thickness reduction, the recess part 105d is formed on the second support part 2223d. Figure 14 15 As shown in FIGS. 5 and 6, in the embodiment five of the present application, other structures are the same as those in the embodiment one, and the difference is that the vibrating diaphragm 2d is thinned to form the recess part 105d, and the basin 1d is not provided with the groove. Specifically, the vibrating diaphragm 2d is recessed from the surface of the vibrating diaphragm 2d, so that the thickness of the second support part 2223d is less than the thickness of the first support part 2213d. Due to the thickness reduction, the recess part 105d is formed on the second support part 2223d.

[0046] ​In the embodiment, the diaphragm 2d is recessed from the surface of the diaphragm 2d to form the recessed portion 105d, i.e., part of the diaphragm 2d is thinned to form the recessed portion 105d, so that the front sound cavity 104d increases in height on the side close to the sound guide channel 103d, thereby increasing the sound outlet height of the sound guide channel 103d, making the sound outlet of the speaker box more smooth, and the sound quality effect better.

[0047] Compared with the related art, the present application provides a speaker box, which comprises a shell having a receiving space and a speaker unit received in the receiving space, a side surface of the shell is provided with a sound guide channel for guiding sound emitted by the speaker unit out of the shell, the shell comprises a bottom wall, a top wall opposite to the bottom wall, and a side wall connecting the bottom wall and the top wall, the speaker unit comprises a basket and a diaphragm fixed on the basket, a front sound cavity is formed between the diaphragm and the bottom wall, the side of the speaker unit close to the sound guide channel is connected with the side wall, the front sound cavity and the sound guide channel are in communication, the diaphragm is provided with a recessed portion in communication with the sound guide channel at a position close to the abutting position of the speaker unit and the side wall, the basket is selectively provided with a groove matched with the recessed portion, the recessed portion makes the height of the side of the front sound cavity close to the sound guide channel greater than the height of the side of the front sound cavity away from the sound guide channel, thereby increasing the sound outlet height of the sound guide channel, making the sound outlet of the speaker box more smooth, and the sound quality effect better.

[0048] The above only describes the embodiments of the present application, and it should be noted that, for those skilled in the art, improvements can be made without departing from the concept of the present application, and these improvements are within the protection scope of the present application, according to actual manufacturing needs, the terms of top wall, bottom wall, side wall and the like in the present application are only functional structure names, and their specific positions can be dynamically adjusted according to actual application scenarios.

Claims

1. A speaker box comprising a housing having a receiving space and a speaker unit received in the receiving space, a sound guide channel being provided on a side of the housing to guide sound emitted by the speaker unit out of the housing, the housing comprising a bottom wall, a top wall opposite to the bottom wall, and a side wall connecting the bottom wall and the top wall, the speaker unit comprising a basket and a diaphragm fixed to the basket, a front sound cavity being formed between the diaphragm and the bottom wall, a side of the speaker unit close to the sound guide channel being connected to the side wall, the front sound cavity and the sound guide channel being in communication, characterized in that, The diaphragm is provided with a recess communicating with the sound guide channel at a position close to the abutment of the speaker unit and the side wall, and the recess makes the height of the front sound cavity on the side close to the sound guide channel greater than the height of the front sound cavity on the side away from the sound guide channel.

2. The loudspeaker enclosure of claim 1, wherein, Part of the diaphragm is bent and recessed in the direction away from the bottom wall to form at least part of the recess.

3. The loudspeaker enclosure of claim 1, wherein, The diaphragm is provided with a hollow portion on the surface of the yoke facing the bottom wall, and the hollow portion extends from the position where the diaphragm is connected to the side wall to form at least part of the recess.

4. The loudspeaker enclosure of claim 1, wherein, Part of the diaphragm is recessed from the surface of the diaphragm facing the bottom wall to form the recess.

5. The loudspeaker enclosure of claim 2 or 3, wherein, The yoke is recessed from the surface of the yoke facing the bottom wall to form a groove matched with the recess.

6. The loudspeaker enclosure of claim 5, wherein, The ratio of the recess depth of the groove to the height of the yoke is greater than 0 and less than or equal to 0.

3.

7. The loudspeaker enclosure of claim 2, wherein, The diaphragm includes a dome and a folded ring surrounding the dome, the folded ring includes a first folded ring part and a second folded ring part connected to the side wall, the first folded ring part includes a first fixed part connected to the dome, a first folded ring part extending outward from the first fixed part, and a first support part fixedly supported on the yoke, the second folded ring part includes a second fixed part connected to the dome, a second folded ring part outside the second fixed part, a second support part fixedly supported on the yoke, and a combination part connecting the second folded ring part and the second support part, and the recess is located at the second support part and the combination part.

8. The loudspeaker enclosure of claim 7, wherein, The first folded ring part is recessed in the direction close to the top wall, and the second folded ring part is recessed in the direction close to the top wall.

9. The loudspeaker enclosure of claim 7, wherein, The second folded ring part includes a first elastic part connected to the second fixed part and a second elastic part connected to the combination part, and the extension height of the second elastic part is less than the extension height of the first elastic part.

10. The loudspeaker enclosure of claim 7, wherein, The speaker unit includes an elastic support fixed to the yoke, the dome includes a support arm extending in the direction of the top wall and fixed to the elastic support, and the first fixed part of the first folded ring part is provided with a fixed arm fixedly attached to the support arm.

11. The loudspeaker enclosure of claim 1, wherein, The side wall includes an outer wall surrounded by the top wall and the bottom wall to form the accommodation space, and a partition plate extending from the outer wall to the speaker unit and abutting the speaker unit, and the side of the diaphragm close to the sound guide channel abuts the partition plate.

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