Loudspeaker enclosure

Abstract

The present application relates to the technical field of electroacoustics, and provides a loudspeaker enclosure. The loudspeaker comprises a basket, a vibration system fixed to the basket, and a magnetic circuit system that drives the vibration system to vibrate and has a magnetic gap; the magnetic circuit system further comprises an elastic support member that supports a main yoke on the basket; the elastic support member comprises a bottom wall surrounding a periphery of the main yoke and side walls bent and extending from the edges of the bottom wall; the loudspeaker further comprises a metal mesh cover sleeved on the outer side of the elastic support member and fixedly connected to the basket, and the side walls are fixed to the metal mesh cover; the basket, the main yoke, the elastic support member, and a diaphragm define an inner cavity for accommodating a main magnetic portion; the main yoke, the elastic support member, the metal mesh cover, and a housing define a rear cavity which is independent of the inner cavity; and the metal mesh cover is provided with vent holes communicated with the rear cavity and the inner cavity. The metal mesh cover is integrally formed, thereby ensuring structural sealing performance, reducing the accumulated height caused by the fitting between parts, releasing a vibration space for the vibration system, and improving acoustic performance of the loudspeaker.

Description

speaker box Technical Field

[0001] This application relates to the field of electroacoustic technology, specifically to a loudspeaker box. Background Technology

[0002] With the widespread adoption of mobile electronic devices, these devices are increasingly becoming more multifunctional. High-quality music playback has become a common feature, leading to the widespread use of speakers in these devices. However, speakers in this technology often have numerous structural components, which are stacked and assembled together. This not only reduces the seal but also increases the stacked height, reducing the space available for the diaphragm vibration system and consequently affecting the speaker's acoustic performance and reliability.

[0003] Therefore, it is necessary to provide a speaker enclosure with a reliable structure and good sound quality. Technical issues

[0004] The purpose of this application is to provide a loudspeaker box with a reliable structure and good sound quality. Technical solutions

[0005] The technical solution of this application is as follows:

[0006] This application provides a loudspeaker enclosure, comprising a housing with a receiving space and a loudspeaker housed within the receiving space. The loudspeaker includes a frame, a vibration system fixed to the frame, and a magnetic circuit system having a magnetic gap for driving the vibration system to vibrate. The vibration system includes a diaphragm fixed to the frame and a voice coil fixed to the diaphragm and inserted into the magnetic gap. The magnetic circuit system includes a main magnetic yoke spaced apart from the frame and a main magnetic portion fixed to the main magnetic yoke facing the voice coil. The magnetic circuit system further includes an elastic support for supporting the main magnetic yoke to the frame. The speaker includes a bottom wall surrounding the periphery of the main magnetic yoke and a side wall extending from the edge of the bottom wall. The speaker also includes a metal mesh cover fitted around the outside of the elastic support and fixedly connected to the frame. The side wall is fixed to the metal mesh cover. The frame, the main magnetic yoke, the elastic support, and the diaphragm form an inner cavity for housing the main magnetic part. The main magnetic yoke, the elastic support, the metal mesh cover, and the housing form a rear cavity independent of the inner cavity. The metal mesh cover has a vent hole connecting the rear cavity and the inner cavity.

[0007] Preferably, the metal mesh cover includes an annular body portion and a horizontal portion extending from the body portion away from the end of the frame along the vibration direction. The body portion is arranged around the outside of the magnetic circuit system and the elastic support member. The sidewall is fixed to the side of the body portion facing the inner cavity, and the horizontal portion is fixed to the bottom wall surface away from the main magnetic yoke.

[0008] Preferably, the basin stand is rectangular, and the elastic support includes two sidewalls that are spaced apart from each other along the short axis and extend along the long axis.

[0009] Preferably, the metal mesh cover includes two horizontal portions that are spaced apart from each other along the long axis, and the horizontal portions are fixed to the portion of the bottom wall located along the short axis.

[0010] Preferably, the body includes two first connecting segments spaced apart from each other along the short axis and two second connecting segments spaced apart from each other along the long axis. The first connecting segments connect to the second connecting segments, the first connecting segments are fixedly connected to the side wall, the second connecting segments are provided with the vent holes, and the horizontal portion extends from the second connecting segments by bending.

[0011] Preferably, the first connecting segment is recessed from the surface facing the basin stand in the direction away from the basin stand to form a first groove, and the side wall protrudes in the direction away from the main magnet to form a first protrusion that cooperates with the first groove.

[0012] Preferably, the first connecting segment is recessed from the surface away from the basin stand towards the basin stand to form a second groove, and the side wall protrudes in the direction away from the main magnet to form a second protrusion that cooperates with the second groove.

[0013] Preferably, the elastic support further includes a positioning strip that connects to the bottom wall and is spaced apart from and parallel to the side wall. The main magnetic yoke includes a side surface that fits against the bottom wall. The main magnetic yoke has a positioning groove that is recessed from the side surface in a direction away from the side wall. The positioning strip cooperates with the positioning groove and is fixed to the main magnetic yoke.

[0014] Preferably, the magnetic circuit system further includes a secondary magnetic part spaced around the main magnetic part to form the magnetic gap, and an annular secondary magnetic yoke fixed to the secondary magnetic part on the side away from the main magnetic yoke. The secondary magnetic yoke includes a fixed protrusion protruding from its outer edge toward the sidewall, and the fixed protrusion abuts against the side of the first protrusion toward the secondary magnetic part.

[0015] Preferably, the housing includes a first housing and a second housing that are fixed to each other. The second housing has an assembly hole, and the speaker is mounted in the assembly hole so that the metal mesh cover and the main magnetic yoke are exposed in the assembly hole. Beneficial effects

[0016] The beneficial effects of this application are as follows: The magnetic circuit system further includes an elastic support member that supports the main magnetic yoke on the frame. The elastic support member includes a bottom wall surrounding the periphery of the main magnetic yoke and a side wall extending from the edge of the bottom wall. The loudspeaker also includes a metal mesh cover fitted around the outside of the elastic support member and fixedly connected to the frame. The side wall is fixed to the metal mesh cover. The frame, the main magnetic yoke, the elastic support member, and the diaphragm form an inner cavity for housing the main magnetic part. The main magnetic yoke, the elastic support member, the metal mesh cover, and the housing form a rear cavity independent of the inner cavity. The metal mesh cover has a vent hole connecting the rear cavity and the inner cavity. This metal mesh cover is integrally formed, which can not only support the magnetic circuit system, but also achieve a sealing function by connecting the elastic support member, ensuring structural airtightness, reducing the height superposition caused by the assembly of components, releasing vibration space for the vibration system, and improving the acoustic performance of the loudspeaker. Attached Figure Description

[0017] Figure 1 is a three-dimensional structural diagram of a speaker box according to an embodiment of this application;

[0018] Figure 2 is a cross-sectional view along line AA in Figure 1;

[0019] Figure 3 is a schematic diagram of the exploded structure of Figure 1;

[0020] Figure 4 is a three-dimensional structural diagram of a loudspeaker according to an embodiment of this application;

[0021] Figure 5 is a schematic diagram of the exploded structure of Figure 4;

[0022] Figure 6 is a cross-sectional view along line BB in Figure 4;

[0023] Figure 7 is a magnified view of the structure of region C in Figure 6;

[0024] Figure 8 is a three-dimensional structural schematic diagram of a metal mesh cover according to an embodiment of this application;

[0025] Figure 9 is a perspective structural diagram of an elastic support member according to an embodiment of this application;

[0026] Figure 10 is a schematic diagram of the layout of the main magnetic part and the auxiliary magnetic part according to an embodiment of this application;

[0027] Figure 11 is a three-dimensional structural schematic diagram of the secondary magnetic yoke according to an embodiment of this application;

[0028] Figure 12 is a three-dimensional structural schematic diagram of the main magnetic yoke according to an embodiment of this application. Embodiments of the present invention

[0029] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0030] Please refer to Figures 1 to 3. An embodiment of this application provides a speaker enclosure 100, which includes a housing 200 having a receiving space 201 and a speaker 300 housed within the housing 200. Specifically, the housing 200 includes a first housing 210 and a second housing 220 fixed to each other, which cooperate to form the receiving space 201. The first housing 210 has a sound outlet 2100 communicating the receiving space 201 with the outside. Sound emitted by the speaker 300 is transmitted to the outside through the sound outlet 2100.

[0031] Please refer to Figure 3. The second housing 220 extends from its inner surface toward the first housing 210 and forms a mounting boss 2201. The mounting boss 2201 surrounds and forms a mounting hole 2200. The mounting hole 2200 penetrates the second housing 220. The speaker 300 is mounted on the mounting boss 2201 and covers the mounting hole 2200.

[0032] Please refer to Figures 4-7. The loudspeaker 300 includes a frame 10, a vibration system 20 fixed to the frame 10, a magnetic circuit system 30 that drives the vibration system 20 to vibrate and has a magnetic gap 36, and a metal mesh cover 40 sleeved on the outside of the magnetic circuit system 30.

[0033] Please refer to Figures 5 to 7. The vibration system 20 includes a diaphragm 22 fixed to the frame 10, a frame 24 fixed to the side of the diaphragm 22 facing the magnetic circuit system 30, and a voice coil 23 supported by the frame 24 within the magnetic gap 36. When the loudspeaker 300 is powered on, the voice coil 23 vibrates under the action of the magnetic circuit system 30, thereby driving the diaphragm 22 to vibrate and produce sound.

[0034] Specifically, referring to Figure 5, the frame 24 is annular and includes an annular first connecting portion 241 connecting the diaphragm 22 and a second connecting portion 242 extending from the edge of the first connecting portion 241 toward the magnetic circuit system 30. The first connecting portion 241 has an inner edge and an outer edge. Referring to Figures 5 to 7, the diaphragm 22 includes a first diaphragm 221 and a second diaphragm 222. The inner edge of the first connecting portion 241 connects to the first diaphragm 221, and the outer edge of the first connecting portion 241 connects to the second diaphragm 222. The second diaphragm 222 is fixed to the frame 10. The protrusion directions of the first diaphragm 221 and the second diaphragm 222 are opposite. Furthermore, the second diaphragm 222 has an annular structure, with an inner edge and an outer edge. The inner edge of the second diaphragm 222 connects to the frame 24, and the outer edge of the second diaphragm 222 is fixed to the frame 10. The first diaphragm 221 protrudes from the side opposite to the metal mesh cover 40, and the second diaphragm 222 protrudes from the side facing the metal mesh cover 40.

[0035] Please refer to Figures 5 to 7. The vibration system 20 also includes an elastic part 21. The elastic part 21 further includes a flexible circuit board 211 and a buffer diaphragm 212 stacked along the vibration direction. The flexible circuit board 211 is fixed to the second connecting part 242 of the frame 10 and the skeleton 24, respectively, and is electrically connected to the voice coil 23. The protrusion of the buffer diaphragm 212 is in the same direction as the protrusion of the second diaphragm 222. Specifically, the second diaphragm 222 protrudes towards the side facing the metal mesh cover 40, and the buffer diaphragm 212 also protrudes towards the side facing the metal mesh cover 40. Specifically, the frame 10 is rectangular, and two elastic parts 21 are provided. The two elastic parts 21 are spaced apart along the long axis of the frame 10 and are fixed to the frame 10 respectively. The supporting effect of the two elastic parts 21 can limit the swaying of the voice coil 23 along the long axis of the frame 10 and can effectively buffer the vibration of the skeleton 24, thereby improving the sound performance of the loudspeaker 300.

[0036] Please refer to Figures 4 to 7. The magnetic circuit system 30 includes an elastic support member 31 detachably connected to the metal mesh cover 40, a main magnetic yoke 35 connected to the elastic support member 31, a main magnetic part 32, a secondary magnetic part 34, and a secondary magnetic yoke 33 located on the side of the main magnetic yoke 35 away from the elastic support member 31. The secondary magnetic yoke 33 is connected to the elastic support member 31, and the secondary magnetic part 34 is located on the side of the secondary magnetic yoke 33 close to the elastic support member 31. The secondary magnetic part 34 is spaced around the main magnetic part 32 to form magnetic gaps 36. The metal mesh cover 40 is connected to the elastic support member 31 and fixed to the basin frame 10 to support the magnetic circuit system 30 on the basin frame 10.

[0037] Please refer to Figure 2. The outer edge of the metal mesh cover 40 is fixed to the mounting boss 2201 and assembled with the mounting hole 2200, so that the main magnetic yoke 35 and the metal mesh cover 40 are partially exposed in the mounting hole 2200, and can be used as part of the housing 200 of the speaker box 100.

[0038] Please refer to Figures 5 and 6. The main magnetic part 32 includes a first main magnet 321 fixed to the main yoke 35, a pole core 322 fixed to the side of the first main magnet 321 away from the main yoke 35, a second main magnet 323 fixed to the side of the pole core 322 away from the first main magnet 321, and a third main magnet 324 fixed to the side of the second main magnet 323 away from the pole core 322. It should be noted that the second main magnet 323 and the third main magnet 324 can also be configured as a single integrally formed magnet.

[0039] Please refer to Figures 5 and 6. The auxiliary magnet section 34 includes two first auxiliary magnets 341 arranged symmetrically and spaced apart, and two second auxiliary magnets 342 arranged symmetrically and spaced apart. The first auxiliary magnets 341 are arranged along the short axis of the basin frame 10, and the second auxiliary magnets 342 are arranged along the long axis of the basin frame 10.

[0040] It should be noted that the first main magnet 321, the second main magnet 323, the third main magnet 324, the first auxiliary magnet 341, and the second auxiliary magnet 342 are preferably made of magnetic steel.

[0041] Please refer to Figures 2, 4, 5, 6, and 8. The frame 10, main magnetic yoke 35, elastic support 31, and diaphragm 22 enclose an inner cavity 202 that houses the main magnetic part 32. The main magnetic yoke 35, elastic support 31, metal mesh cover 40, and housing 200 enclose a rear cavity 203 that is independent of the inner cavity 202. The metal mesh cover 40 has a vent 4221 that connects the rear cavity 203 and the inner cavity 202. The vent 4221 mainly serves to allow air to pass through and transmit sound. The rear cavity 203 can be filled with sound-absorbing material. The vent 4221 is designed to prevent the sound-absorbing material from passing through, thus preventing foreign objects (such as sound-absorbing material) from entering the speaker 300 and affecting its sound performance.

[0042] In related technologies, the metal mesh cover and the support are separate components. During assembly, the metal mesh cover and the support need to be sealed and glued together, which poses a risk of air leakage and increases the height overlap, reducing the vibration space of the vibration system 20. In this embodiment, the metal mesh cover 40 is integrally formed, which can support the function of the magnetic circuit system 30 and eliminates the need for gluing the metal mesh cover and the support in related technologies. This ensures structural airtightness, reduces the height overlap caused by the assembly of components, releases vibration space for the vibration system 20, and improves the acoustic performance of the speaker 300.

[0043] Please refer to Figures 4 and 9. The elastic support 31 includes a bottom wall 311 surrounding the main magnetic yoke 35 and side walls 312 extending from the edge of the bottom wall 311. Specifically, the elastic support 31 includes two side walls 312 spaced apart from each other along the short axis of the frame 10, and the side walls 312 extend along the long axis of the frame 10. The side walls 312 protrude in a direction away from the main magnetic part 32 to form a first protrusion 3121. The side walls 312 protrude in a direction away from the main magnetic part 32 to form a second protrusion 3122. The first protrusion 3121 and the second protrusion 3122 are used to connect the metal mesh cover 40. Specifically, each side wall 312 is provided with two first protrusions 3121 and two second protrusions 3122, with the two first protrusions 3121 and the two second protrusions 3122 spaced apart, which can improve the stability of the connection between the metal mesh cover 40 and the elastic support 31.

[0044] Furthermore, the elastic support 31 also includes a positioning strip 314 that connects to the bottom wall 311 and is spaced apart from and parallel to the side wall 312. The positioning strip 314 is used to connect to the main magnetic yoke 35.

[0045] Referring to Figures 4, 5, and 8, the metal mesh cover 40 includes an annular body portion 42 and a horizontal portion 41 extending from the end of the body portion 42 away from the frame 10 along the vibration direction. A receiving cavity 43 for accommodating the elastic support member 31 is formed between the horizontal portion 41 and the body portion 42. Specifically, the body portion 42 is arranged around the outside of the magnetic circuit system 30 and the elastic support member 31, the sidewall 312 is fixed to the side of the body portion 42 facing the inner cavity 202, and the horizontal portion 41 is fixed to the surface of the bottom wall 311 away from the main magnetic yoke 35. Specifically, the metal mesh cover 40 includes two horizontal portions 41 arranged relatively spaced apart along the long axis, and the horizontal portions 41 are fixed to the portion of the bottom wall 311 located in the short axis direction of the frame 10.

[0046] Referring to Figure 8, the main body 42 includes two first connecting sections 421 spaced apart along the short axis of the basin stand 10 and two second connecting sections 422 spaced apart along the long axis of the basin stand 10. The first connecting sections 421 connect to the second connecting sections 422 and are fixedly connected to the side wall 312. The second connecting sections 422 are provided with ventilation holes 4221, and the horizontal portion 41 extends from the second connecting section 422 by bending. Specifically, the first connecting section 421 is recessed from the surface facing the basin stand 10 in a direction away from the basin stand 10 to form a first groove 4211, and the first connecting section 421 is recessed from the surface away from the basin stand 10 in a direction facing the basin stand 10 to form a second groove 4212. The first protrusion 3121 cooperates with the first groove 4211, which can be understood as a one-to-one correspondence between the first protrusion 3121 and the first groove 4211. The second protrusion 3122 mates with the second groove 4212, which can be understood as a one-to-one correspondence between the second protrusion 3122 and the second groove 4212. The metal mesh cover 40 and the elastic support 31 are connected by the engagement of the protrusion and the groove, which can reduce the adhesion between the metal mesh cover 40 and the elastic support 31, reduce the height superposition caused by the assembly between components, release vibration space for the vibration system 20, and improve the acoustic performance of the speaker 300.

[0047] Please refer to Figures 6 and 12. The main magnetic yoke 35 includes a side surface 351 that fits against the bottom wall 311. The main magnetic yoke 35 has a positioning groove 352 that is recessed from the side surface 351 toward the side wall 311. The positioning strip 314 cooperates with the positioning groove 352 and is fixed to the main magnetic yoke 35.

[0048] Please refer to Figures 6 and 11. The secondary magnetic yoke 33 includes a fixed protrusion 331 that protrudes from its outer edge toward the sidewall 312. The fixed protrusion 331 abuts against the side of the first protrusion 3121 toward the secondary magnetic part 34.

[0049] Please refer to Figures 4, 5, 10, and 12. When the secondary magnetic yoke 33, the main magnetic yoke 35, and the elastic support member 31 are assembled, the positioning strip 314 is engaged in the positioning groove 352 to connect the main magnetic yoke 35 with the bottom wall 311 of the elastic support member 31. The fixing protrusion 331 abuts against the side of the first protrusion 3121 facing the secondary magnetic part 34 to connect the secondary magnetic yoke 33 with the side wall 312 of the elastic support member 31. The main magnetic part 32 is installed on the side of the main magnetic yoke 35 facing away from the elastic support member 31, and the secondary magnetic part 34 is installed on the side of the secondary magnetic yoke 33 facing the elastic support member 31 and is spaced around the main magnetic part 32 to form a magnetic gap 36.

[0050] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A loudspeaker enclosure comprising a housing having a receiving space and a loudspeaker housed within the receiving space, the loudspeaker comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system having a magnetic gap for driving the vibration system to vibrate, the vibration system comprising a diaphragm fixed to the frame and a voice coil fixed to the diaphragm and inserted into the magnetic gap, the magnetic circuit system comprising a main magnetic yoke spaced apart from the frame and a main magnetic portion fixed to the main magnetic yoke on the side facing the voice coil, characterized in that... The magnetic circuit system further includes an elastic support member that supports the main magnetic yoke on the frame. The elastic support member includes a bottom wall surrounding the periphery of the main magnetic yoke and a side wall that bends and extends from the edge of the bottom wall. The loudspeaker also includes a metal mesh cover that is sleeved on the outside of the elastic support member and fixedly connected to the frame. The side wall is fixed to the metal mesh cover. The frame, the main magnetic yoke, the elastic support member, and the diaphragm surround to form an inner cavity that accommodates the main magnetic part. The main magnetic yoke, the elastic support member, the metal mesh cover, and the housing surround to form a rear cavity that is independent of the inner cavity. The metal mesh cover is provided with a vent hole that connects the rear cavity and the inner cavity.

2. The speaker enclosure according to claim 1, characterized in that, The metal mesh cover includes an annular body portion and a horizontal portion that bends and extends from the body portion away from the end of the frame along the vibration direction. The body portion is arranged around the outside of the magnetic circuit system and the elastic support member. The sidewall is fixed to the side of the body portion facing the inner cavity, and the horizontal portion is fixed to the bottom wall surface away from the main magnetic yoke.

3. The speaker enclosure according to claim 2, characterized in that, The basin stand is rectangular, and the elastic support includes two sidewalls that are spaced apart from each other along the short axis and extend along the long axis.

4. The speaker enclosure according to claim 3, characterized in that, The metal mesh cover includes two horizontal portions that are spaced apart from each other along the long axis, and the horizontal portions are fixed to the portion of the bottom wall located along the short axis.

5. The speaker enclosure according to claim 4, characterized in that, The main body includes two first connecting segments spaced apart from each other along the short axis and two second connecting segments spaced apart from each other along the long axis. The first connecting segments connect to the second connecting segments and are fixedly connected to the side wall. The second connecting segments are provided with the ventilation holes. The horizontal portion extends from the second connecting segments by bending.

6. The speaker enclosure according to claim 5, characterized in that, The first connecting section is recessed from the surface facing the basin stand in the direction away from the basin stand to form a first groove, and the side wall protrudes in the direction away from the main magnet to form a first protrusion that cooperates with the first groove.

7. The speaker enclosure according to claim 6, characterized in that, The first connecting section is recessed from the surface away from the basin stand towards the basin stand to form a second groove, and the side wall protrudes in the direction away from the main magnet to form a second protrusion that cooperates with the second groove.

8. The speaker enclosure according to claim 2, characterized in that, The elastic support also includes a positioning strip that connects to the bottom wall and is spaced apart from and parallel to the side wall. The main magnetic yoke includes a side surface that fits against the bottom wall. The main magnetic yoke has a positioning groove that is recessed from the side surface away from the side wall. The positioning strip cooperates with the positioning groove and is fixed to the main magnetic yoke.

9. The speaker enclosure according to claim 6, characterized in that, The magnetic circuit system further includes a secondary magnetic part spaced around the main magnetic part to form the magnetic gap, and a ring-shaped secondary magnetic yoke fixed to the secondary magnetic part on the side away from the main magnetic yoke. The secondary magnetic yoke includes a fixed protrusion protruding from its outer edge toward the sidewall, and the fixed protrusion abuts against the side of the first protrusion toward the secondary magnetic part.

10. The speaker enclosure according to claim 1, characterized in that, The housing includes a first housing and a second housing that are fixed to each other. The second housing has an assembly hole, and the speaker is mounted in the assembly hole so that the metal mesh cover and the main magnetic yoke are exposed in the assembly hole.

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