A loudspeaker module and assembly method

Abstract

The application provides a loudspeaker module, which comprises a shell with a containing space, a vibration system contained in the containing space, and a magnetic circuit system contained in the containing space and used for driving the vibration system, the shell comprises a supporting frame with a through cavity, a front cover arranged on one side of the supporting frame, and a rear cover arranged on the side of the supporting frame away from the front cover, the inner side of the supporting frame is provided with a positioning structure, the inner side of the supporting frame extends towards the through cavity to form a clamping plate, the edge of the vibration system is connected to the side of the positioning structure close to the front cover, the magnetic circuit system is fixed to the side of the positioning structure close to the rear cover and fixed to the clamping plate, the vibration system and the front cover enclose to form a front cavity, and the vibration system, the supporting frame and the rear cover enclose to form a rear cavity. The vibration system and the magnetic circuit system of the application are directly assembled with the shell to obtain the loudspeaker module, compared with the two assembly processes of the loudspeaker and the module in the prior art, the loudspeaker module can be simplified into one assembly process of the loudspeaker, and the cost is reduced.

Description

[0001] The present application relates to the technical field of loudspeakers, and in particular to a loudspeaker module and an assembling method.

[0002] As a sound device for mobile phones, televisions, computers and other electronic products, loudspeakers are widely used in people's daily production and life. With the increasing demand for the acoustic performance of loudspeakers, the assembling method of loudspeaker modules is also required to be improved.

[0003] The loudspeaker module in the related art usually includes a loudspeaker unit, a front shell, a rear shell, a stereo mesh cloth, a flexible printed circuit (FPC) and a mesh cloth. In the assembling process of the loudspeaker module, the loudspeaker unit is first assembled, and then the loudspeaker unit is assembled with other materials. As a result, the assembling process of the loudspeaker module is relatively complex and the cost is relatively high, and at the same time, the sealing performance of the loudspeaker module is easily reduced.

[0004] Therefore, it is necessary to provide a new loudspeaker module and an assembling method to solve the above problems.

[0005] The present application aims to provide a loudspeaker module and an assembling method, which can solve the technical problems of the complex assembling process and high cost of the loudspeaker module in the related art.

[0006] The technical solution provided by the first aspect of the present application is as follows:

[0007] A loudspeaker module includes an outer shell having a receiving space, a vibration system received in the receiving space, and a magnetic circuit system received in the receiving space and used to drive the vibration system. The outer shell includes a support frame having a through cavity, a front cover arranged on one side of the support frame, and a rear cover arranged on the side of the support frame away from the front cover. The inner side of the support frame is provided with a positioning structure, and the inner side of the support frame extends into the through cavity to form a clamping plate. The edge of the vibration system is connected to the side of the positioning structure close to the front cover, and the magnetic circuit system is fixed to the side of the positioning structure close to the rear cover and to the clamping plate. The vibration system and the front cover form a front cavity, and the vibration system, the support frame and the rear cover form a rear cavity.

[0008] ​​​Preferably, the support frame comprises a main frame with the through cavity and an enclosing frame fixedly connected to a side of the main frame away from the front cover, the positioning structure is arranged on the main frame, the clamping plate is formed by extending from a side of the enclosing frame connected to the main frame towards the through cavity, the main frame, the enclosing frame and the clamping plate are integrally arranged, and the rear cover covers a side of the enclosing frame away from the main frame.

[0009] Preferably, the main frame is made of plastic material, a connecting edge is formed by bending and extending from a side of the enclosing frame connected to the main frame, and the connecting edge is embeddedly connected in the main frame.

[0010] Preferably, the positioning structure comprises a positioning portion extending from an inner side of the support frame towards the accommodation space, the vibration system comprises a voice coil assembly elastically connected to the positioning portion and a diaphragm assembly elastically connected to the support frame and connected to the voice coil assembly, the voice coil assembly and the diaphragm assembly are arranged on a side of the positioning portion close to the front cover, and the diaphragm assembly seals a side of the support frame close to the front cover.

[0011] Preferably, the voice coil assembly comprises an elastic connecting piece connected to one end of the positioning portion, a voice coil connected to a side of the elastic connecting piece away from the positioning portion, and a flexible circuit board fixedly connected to the positioning portion and the voice coil at two ends respectively, and a side of the voice coil close to the front cover is connected to the diaphragm assembly.

[0012] Preferably, the diaphragm assembly comprises a dome connected to the voice coil and a diaphragm fixed to the dome and diverging outward from the dome to be connected to the support frame, and the diaphragm and the dome jointly seal a side of the support frame close to the front cover.

[0013] Preferably, the magnetic circuit system comprises a magnetic bowl fixed to a side of the positioning portion close to the rear cover, a first magnetic steel fixed to the magnetic bowl and accommodated in the voice coil, and a second magnetic steel fixed to the magnetic bowl and arranged in space with the first magnetic steel, a side of the second magnetic steel away from the magnetic bowl is fixed to the clamping plate, and the voice coil is arranged between the first magnetic steel and the second magnetic steel.

[0014] Preferably, the magnetic bowl is provided with a gas permeable hole, the magnetic circuit system further comprises a gas permeable isolation piece fixed to the magnetic bowl and covering the gas permeable hole, and the magnetic bowl, the gas permeable isolation piece, the support frame and the rear cover form a filling cavity.

[0015] Preferably, the back cover is provided with a filling hole in communication with the filling cavity, the front cover is protruded away from the voice coil assembly at a region corresponding to the voice coil assembly, the protruded region of the front cover is provided with a sound hole, and the side of the front cover away from the voice coil assembly is fixed with a mesh cloth covering the sound hole.

[0016] The second aspect of the present application provides the technical solutions as follows.

[0017] An assembling method of a loudspeaker module, comprising the following steps:

[0018] A support frame with a through cavity is provided, wherein the inner side of the support frame is provided with a positioning structure, and the inner side of the support frame extends into the through cavity to form a clamping plate;

[0019] The edge of the vibration system is connected with the positioning structure, and the magnetic circuit system is fixed on the side of the positioning structure away from the vibration system and connected with the clamping plate, so that the vibration system and the magnetic circuit system are installed in the support frame;

[0020] A front cover is arranged on the side of the support frame close to the vibration system, and a back cover is arranged on the side of the support frame close to the magnetic circuit system, so that the vibration system and the front cover form a front cavity, the vibration system, the support frame and the back cover form a back cavity, and the front cover, the support frame and the back cover jointly form an outer shell.

[0021] The present application has the advantages that the vibration system and the magnetic circuit system are assembled in the accommodation space of the outer shell through the positioning structure, the vibration system and the magnetic circuit system can be directly assembled with the outer shell to obtain the loudspeaker module, compared with the two assembling processes of the loudspeaker and the module in the prior art, the loudspeaker module can be simplified into one assembling process, the assembling process is relatively simple, and the cost is reduced; meanwhile, the vibration system, the support frame and the back cover form a back cavity with good sealing performance, which is beneficial to reducing the air leakage risk points. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a loudspeaker module according to an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a schematic diagram of the structure of a support frame of a loudspeaker module according to an embodiment of the present application;

[0024] Figure 3 FIG. 3 is an exploded view of a support frame of a loudspeaker module according to an embodiment of the present application;

[0025] Figure 4 FIG. 4 is a top view of a loudspeaker module according to an embodiment of the present application;

[0026] Figure 5 For Figure 4 A-A direction sectional view of the embodiment 1 of the present application;

[0027] Figure 6 For Figure 4 B-B direction sectional view of the embodiment 1 of the present application;

[0028] Figure 7 The exploded view of a loudspeaker module in the embodiment 1 of the present application;

[0029] Figure 8 The flow chart of the assembling method of a loudspeaker module in the embodiment 2 of the present application.

DETAILED DESCRIPTION

[0030] The present application will be further described below in conjunction with the drawings and embodiments.

[0031] Embodiment 1:

[0032] Please refer to Figures 1 to 7 , the embodiment provides a loudspeaker module, which comprises a shell 1 with a containing space 11, a vibration system 2 contained in the containing space 11 and a magnetic circuit system 3 contained in the containing space 11 and used for driving the vibration system 2, the shell 1 comprises a support frame 12 with a through cavity, a front cover 13 covered on one side of the support frame 12 and a rear cover 14 covered on the side of the support frame 12 away from the front cover 13, the inner side of the support frame 12 is provided with a positioning structure 15, the inner side of the support frame 12 extends towards the through cavity to form a clamping plate 121, the edge of the vibration system 2 is connected to the side of the positioning structure 15 close to the front cover 13, the magnetic circuit system 3 is fixed to the side of the positioning structure 15 close to the rear cover 14 and fixed to the clamping plate 121, the vibration system 2 and the front cover 13 enclose to form a front cavity 4, and the vibration system 2, the support frame 12 and the rear cover 14 enclose to form a rear cavity 5.

[0033] The vibration system 2 and the magnetic circuit system 3 are assembled in the containing space 11 of the shell 1 through the positioning structure 15, which can realize the direct assembly of the vibration system 2 and the magnetic circuit system 3 with the shell 1 to obtain the loudspeaker module, compared with the two assembly processes of the loudspeaker and the module separated in the prior art, which can be simplified into one assembly process of the loudspeaker, so that the assembly process is relatively simple, and the cost can be reduced; meanwhile, the vibration system 2, the support frame 12 and the rear cover 14 enclose to form the rear cavity 5 with good sealing performance, which is beneficial to reducing the air leakage risk points.

[0034] Please refer to Figures 2 to 5In the embodiment, the support frame 12 comprises a main frame 122 with a through cavity and an enclosing frame 123 fixedly connected to a side of the main frame 122 away from the front cover 13, the positioning structure 15 is arranged on the main frame 122, the clamping plate 121 is formed by extending the side of the enclosing frame 123 connected to the main frame 122 into the through cavity, the main frame 122, the enclosing frame 123 and the clamping plate 121 are integrally arranged, and the rear cover 14 is arranged on the side of the enclosing frame 123 away from the main frame 122. Specifically, the main frame 122 and the enclosing frame 123 can be rectangular frames, the rear cover 14 and the front cover 13 can be rectangular plates, the vibration system 2 is connected to the main frame 122 through the positioning structure 15, the magnetic circuit system 3 is fixed to the main frame 122 through the positioning structure 15 and the clamping plate 121, and thus the vibration system 2 and the magnetic circuit system 3 are directly assembled with the shell 1 to obtain the loudspeaker module. The main frame 122, the enclosing frame 123 and the clamping plate 121 are integrally arranged, so that the clamping plate 121 and the enclosing frame 123 and the enclosing frame 123 and the main frame 122 are firmly combined, the reliability risk is lower, and compared with the front shell and the rear shell in the prior art, the forming difficulty of the shell 1 is greatly reduced. Preferably, a plurality of positioning grooves are arranged on the side of the enclosing frame 123 connected to the rear cover 14, the edge of the rear cover 14 extends outward and is provided with a plurality of positioning blocks matched with the positioning grooves, for example, one positioning block is arranged on each side of the rear cover 14, and one positioning groove is arranged on each side of the enclosing frame 123. After the positioning blocks and the positioning grooves are assembled, the rear cover 14 can be accurately placed at the corresponding position of the enclosing frame 123, which is beneficial to the vibration system 2, the support frame 12 and the rear cover 14 to form a sealed rear cavity 5.

[0035] Please refer to Figure 2 and Figure 3Preferably, the main frame 122 is made of plastic material, the connecting rim 124 is formed by bending the side of the enclosing frame 123 connected with the main frame 122, and the connecting rim 124 is embedded in the main frame 122. Specifically, the main frame 122 can be made of plastic material, the enclosing frame 123 can be made of metal material, and the main frame 122 and the enclosing frame 123 can be integrally formed by injection molding, so as to realize the integration of the main frame 122, the enclosing frame 123 and the clamping plate 121. The connecting rim 124 can be a connecting block, which is embedded in the main frame 122 during the injection molding process between the main frame 122 and the enclosing frame 123, so as to make the connection between the main frame 122 and the enclosing frame 123 more compact. At the same time, the side wall of the enclosing frame 123 is closely attached to the main frame 122, which further improves the sealing performance of the rear cavity 5. Moreover, the enclosing frame 123 is made of metal material, and the clamping plate 121 extends into the accommodating space 11, so that the heat generated by the loudspeaker module during operation can be conducted to the outside through the clamping plate 121 and the enclosing frame 123, thereby improving the working stability of the loudspeaker module. Preferably, a reinforcing rib is further fixed in the main frame 122, so that the corner of the main frame 122 forms a concave cavity, and the corresponding corner of the enclosing frame 123 is embedded in the concave cavity, thereby further enhancing the connection strength between the main frame 122 and the enclosing frame 123.

[0036] Please refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 7In the embodiment, the positioning structure 15 comprises positioning portions 151 extending from the inner side of the self-supporting frame 12 into the accommodating space 11, the vibration system 2 comprises a voice coil assembly 21 elastically connected with the positioning portions 151 and a diaphragm assembly 22 elastically connected with the self-supporting frame 12 and connected with the voice coil assembly 21, the voice coil assembly 21 and the diaphragm assembly 22 are arranged on the side of the positioning portions 151 close to the front cover 13, and the diaphragm assembly 22 seals the side of the self-supporting frame 12 close to the front cover 13. Specifically, the positioning portions 151 are arranged on the side of the main frame 122 close to the rear cover 14, the positioning portions 151 are arranged on the opposite sides of the main frame 122 respectively, and the positioning portions 151 are staggered with the clamping plates 121, so that the positioning structure 15 can provide stable support for the voice coil assembly 21 and the diaphragm assembly 22, and the connection between the clamping plates 121 and the magnetic circuit system 3 is not interfered. The voice coil assembly 21 is elastically connected with the positioning portions 151, so that the voice coil assembly 21 can vibrate after being driven by the magnetic circuit system 3; the diaphragm assembly 22 is elastically connected with the self-supporting frame 12, and the diaphragm assembly 22 is connected with the voice coil assembly 21, so that the voice coil assembly 21 can drive the diaphragm assembly 22 to vibrate, thereby realizing the sound production of the loudspeaker module. In other embodiments, the positioning structure 15 can comprise four positioning portions 151 arranged on the four sides of the main frame 122, so that the positioning structure 15 can provide more stable support for the voice coil assembly 21 and the diaphragm assembly 22; the positioning structure 15 can be a positioning portion 151 in the form of a ring, compared with the multiple positioning portions 151 arranged at intervals, the voice coil assembly 21 and the diaphragm assembly 22 can be provided with more stable support.

[0037] Please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7In the embodiment, the voice coil assembly 21 comprises elastic connecting pieces 212 connected to the positioning portions 151, voice coils 211 connected to the elastic connecting pieces 212 away from the positioning portions 151, and flexible circuit boards 213 fixedly connected to the positioning portions 151 and the voice coils 211 respectively. The voice coils 211 are connected to the diaphragm assembly 22 near the front cover 13. Specifically, the voice coils 211 are wound by voice coil leads. After the voice coils 211 are powered, the voice coils 211 are driven by the magnetic circuit system 3 to vibrate and drive the diaphragm assembly 22 to vibrate, thereby realizing the sound production of the loudspeaker module. The elastic connecting pieces 212 are provided in two. The elastic connecting pieces 212 can be elastic connecting pieces. The voice coils 211 are arranged between the two elastic connecting pieces 212, so that the opposite sides of the voice coils 211 are elastically connected to the corresponding positioning portions 151, thereby realizing that the voice coils 211 can vibrate in the accommodating space 11, and also ensuring that the vibration of the voice coils 211 is relatively balanced and is not prone to shaking and swinging, thereby improving the sound production performance of the loudspeaker module. The flexible circuit board 213 is provided in one. The flexible circuit board 213 is arranged between the positioning portion 151 and the elastic connecting piece 212, which is conducive to the adhesion of the flexible circuit board 213 to the positioning portion 151. Preferably, the plate surface of the positioning portion 151 on the connection side of the voice coil 211 is large at both ends and small in the middle, so that the plate surface of the positioning portion 151 on the side is adapted to the flexible circuit board 213, which is conducive to the fixation of the flexible circuit board 213. In other embodiments, the number of elastic connecting pieces 212 and the number of flexible circuit boards 213 can be set according to actual needs, such as four elastic connecting pieces 212 and two flexible circuit boards 213.

[0038] Please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 In the embodiment, the diaphragm assembly 22 comprises a dome 221 connected to the voice coil assembly 21 and a diaphragm 222 fixed to the dome 221 and diverging outward from the dome 221 to the support frame 12. The diaphragm 222 and the dome 221 jointly seal the side of the support frame 12 close to the front cover 13. Specifically, the area of the dome 221 is larger than that of the voice coil 211, and the side of the dome 221 close to the voice coil 211 is fixedly connected to the voice coil 211, which is conducive to the vibration of the dome 221 driven by the voice coil 211, thereby driving the diaphragm 222 to vibrate. The diaphragm 222 is arranged around the dome 221, and the two ends of the diaphragm 222 are connected to the dome 221 and the main frame 122 respectively, so that the diaphragm 222 seals the side of the main frame 122, and the back cover 14 seals the side of the enclosing frame 123 away from the main frame 122, thereby forming a sealed rear cavity 5. Preferably, the connected end of the diaphragm 222 to the dome 221 extends to a certain distance from the surface of the dome 221, which can improve the connection strength between the diaphragm 222 and the dome 221.

[0039] Please refer toFigure 4 、 Figure 5 and Figure 6 , the magnetic circuit system 3 comprises a magnetic bowl 31 fixed to the positioning part 151 close to the rear cover 14 side, a first magnetic steel 32 fixed to the magnetic bowl 31 and accommodated in the voice coil 211, and a second magnetic steel 33 fixed to the magnetic bowl 31 and arranged in a spaced manner with the first magnetic steel 32, the second magnetic steel 33 is fixed to the clamping plate 121 away from the magnetic bowl 31, and the voice coil 211 is arranged between the first magnetic steel 32 and the second magnetic steel 33. Specifically, one end of the magnetic bowl 31 is fixedly connected with one of the two positioning parts 151, and the other end is fixedly connected with the other of the two positioning parts 151, so as to realize the fixed connection between the magnetic bowl 31 and the main frame 122; moreover, the connected end of the magnetic bowl 31 and the positioning part 151 is matched with the shape of the positioning part 151, which is conducive to the fixed connection of the magnetic bowl 31 with the main frame 122 through the positioning part 151. The side of the enclosing frame 123 connected with the main frame 122 extends into the through cavity to form two clamping plates 121 arranged in a spaced manner, the first magnetic steel 32 is a rectangular magnetic steel and is arranged in the middle region of the magnetic bowl 31, the second magnetic steel 33 is a strip-shaped magnetic steel and is arranged on both sides of the first magnetic steel 32, and the first magnetic steel 32 is accommodated in the voice coil 211, so that the voice coil 211 is inserted into the magnetic gap of the first magnetic steel 32 and the second magnetic steel 33, thereby ensuring that the first magnetic steel 32 and the second magnetic steel 33 can drive the voice coil 211 to vibrate after the voice coil 211 is powered, the second magnetic steel 33 is fixed with the magnetic bowl 31 and the clamping plate 121, and the magnetic bowl 31 is fixed with the main frame 122, thereby facilitating to improve the overall stability of the magnetic steel system in the shell 1.

[0040] Preferably, a groove is formed on the connecting side of the positioning part 151 and the magnetic bowl 31 to form a step, so as to ensure that the positioning part 151 and the magnetic bowl 31 are tightly fitted, thereby facilitating to improve the connection strength between the main frame 122 and the magnetic bowl 31, and at the same time, when the sound-absorbing material is filled into the rear cavity 5 subsequently, the sound-absorbing material can also be prevented from penetrating into the vibration system 2 from the connection between the magnetic bowl 31 and the main frame 122, thereby avoiding the interference of the sound-absorbing material with the vibration system 2 and improving the reliability of the vibration system 2.

[0041] Please refer to Figure 4 、 Figure 5 and Figure 6In the embodiment, the magnetic bowl 31 is provided with air holes 311, and the magnetic circuit system 3 further comprises air isolation members 34 fixed to the magnetic bowl 31 and covering the air holes 311. The magnetic bowl 31, the air isolation members 34, the support frame 12 and the rear cover 14 enclose a filling cavity. Specifically, the magnetic bowl 31 is provided with two air holes 311 arranged at intervals, so as to facilitate the heat generated by the vibration system 2 and the magnetic steel system during operation to be dissipated from the air holes 311, thereby improving the use stability of the loudspeaker module. The air isolation members 34 are correspondingly provided in pairs. The air isolation members 34 are elements that can allow air to pass through and play a role of isolation. Specifically, the air isolation members 34 can be dust screen cloth 132, which is woven by using high-precision looms with polyester and dacron as raw materials. The dust screen cloth 132 has the characteristics of variable density, light weight, certain rigidity, flexibility and acoustic resistance, etc. Specifically, the woven material can be one or both of polyethylene terephthalate (PET) and polyether ether ketone (PEEK). The rear cover 14 is provided with a filling hole 141 communicating with the filling cavity. The filling hole 141 is sealed by a sealing member 142. When it is necessary to fill sound-absorbing material into the filling cavity, the sealing member 142 is removed, and the sound-absorbing material is filled into the filling cavity through the filling hole 141. The sound-absorbing material can improve the low-frequency effect of the loudspeaker module. In other embodiments, the number of air holes 311 and air isolation members 34 can be set according to actual needs, such as three or four.

[0042] Please refer to Figure 4 、 Figure 5 and Figure 6 In the embodiment, the protruding area of the front cover 13 corresponding to the voice coil assembly 21 is protruded away from the voice coil assembly 21. The protruding area of the front cover 13 is provided with sound holes 131, and the side of the front cover 13 away from the voice coil assembly 21 is fixed with screen cloth 132 covering the sound holes 131. Specifically, the front cover 13 is fixed to the main frame 122 and clamps the diaphragm 222. The protruding area of the front cover 13 is provided with four sound holes 131. The screen cloth 132 can be sound-permeable screen cloth 132, which covers all the sound holes 131 and can effectively prevent sundries from entering the interior of the loudspeaker module through the sound holes 131.

[0043] Embodiment 2:

[0044] Please refer to Figure 8 The embodiment provides an assembling method of a loudspeaker module, which is applied to the loudspeaker module as described above and comprises the following steps.

[0045] Step S10, providing a support frame 12 with a through cavity.

[0046] In the embodiment, the support frame 12 comprises a main frame 122 with a through cavity and a surrounding frame 123 fixedly connected to a side of the main frame 122 away from the front cover 13, and the inner side of the support frame 12 is provided with a positioning structure 15 arranged on the main frame 122, and the clamping plate 121 is formed by extending the side of the surrounding frame 123 connected to the main frame 122 into the through cavity, and the main frame 122, the surrounding frame 123 and the clamping plate 121 are integrally arranged; the positioning structure 15 comprises a positioning part 151 extending into the accommodating space 11 from the inner side of the support frame 12.

[0047] In step S20, the edge of the vibration system 2 is connected to the positioning structure 15, and the magnetic circuit system 3 is fixed to the side of the positioning structure 15 away from the vibration system 2 and connected to the clamping plate 121, so that the vibration system 2 and the magnetic circuit system 3 are installed in the support frame 12.

[0048] In the embodiment, the vibration system 2 comprises an elastic connecting piece 212, a voice coil 211, a flexible circuit board 213, a dome 221 and a diaphragm 222; and the magnetic circuit system 3 comprises a magnetic bowl 31, an air permeable isolation piece 34, a first magnetic steel 32 and a second magnetic steel 33.

[0049] In step S20, the edge of the vibration system 2 is connected to the positioning structure 15, and the magnetic circuit system 3 is fixed to the side of the positioning structure 15 away from the vibration system 2 and connected to the clamping plate 121, so that the vibration system 2 and the magnetic circuit system 3 are installed in the support frame 12.

[0050] In step S20, the edge of the vibration system 2 is connected to the positioning structure 15, and the magnetic circuit system 3 is fixed to the side of the positioning structure 15 away from the vibration system 2 and connected to the clamping plate 121, so that the vibration system 2 and the magnetic circuit system 3 are installed in the support frame 12.

[0051] In the embodiment, the vibration system 2 is first installed in the support frame 12, and then the magnetic circuit system 3 is installed in the support frame 12, so that the first magnetic steel 32 extends into the voice coil 211 when the magnetic circuit system 3 is subsequently installed. In other embodiments, the magnetic circuit system 3 can be installed first, and then the vibration system 2 is installed.

[0052] Step S30, the front cover 13 is covered on the side of the support frame 12 close to the vibration system 2, the rear cover 14 is covered on the side of the support frame 12 close to the magnetic circuit system 3, the vibration system 2 and the front cover 13 form the front cavity 4, the vibration system 2, the support frame 12 and the rear cover 14 form the rear cavity 5, and the front cover 13, the support frame 12 and the rear cover 14 form the shell 1.

[0053] In the embodiment, the shell 1 includes the support frame 12 with a cavity, the front cover 13 covered on one side of the support frame 12, and the rear cover 14 covered on the side of the support frame 12 away from the front cover 13, the front cover 13 is protruded away from the voice coil assembly 21 in the area corresponding to the voice coil assembly 21, at least one sound hole 131 is arranged in the protruded area of the front cover 13, and the gauze 132 is fixed on the side of the protruded area of the front cover 13 away from the voice coil assembly 21 to cover the sound hole 131, and the rear cover 14 is provided with the filling hole 141 connected with the filling cavity, and the filling hole 141 is sealed by the sealing piece 142.

[0054] In the step S30, the rear cover 14 is first covered on the surrounding frame 123, then the front cover 13 is covered on the main frame 122, the gauze 132 is installed on the protruded area of the front cover 13, the sound-absorbing material is filled into the filling cavity through the filling hole 141, the filling hole 141 is sealed by the sealing piece 142 after the sound-absorbing material is filled, and the loudspeaker module is obtained.

[0055] In the embodiment, the vibration system 2 and the magnetic circuit system 3 are assembled in the accommodation space 11 of the shell 1 through the positioning structure 15, the vibration system 2 and the magnetic circuit system 3 can be directly assembled with the shell 1 to obtain the loudspeaker module, compared with the two assembly processes of the loudspeaker and the module in the prior art, the assembly process can be simplified to one process of the loudspeaker, the process is relatively simple, and the cost is reduced; meanwhile, the vibration system 2, the support frame 12 and the rear cover 14 form the rear cavity 5 with good sealing performance, which is beneficial to reducing the air leakage risk points.

[0056] The above only describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the concept of the present application, and these improvements are within the protection scope of the present application.

Claims

1. A loudspeaker module, comprising a housing having a receiving space, a vibration system housed within the receiving space, and a magnetic circuit system housed within the receiving space for driving the vibration system, characterized in that, The outer shell includes a support frame with a through cavity, a front cover covering one side of the support frame, and a rear cover covering the support frame away from the front cover. A positioning structure is provided on the inner side of the support frame, and the inner side of the support frame extends into the through cavity to form a clamping plate. The edge of the vibration system is connected to the side of the positioning structure near the front cover. The magnetic circuit system is fixed to the side of the positioning structure near the rear cover and fixed to the clamping plate. The vibration system and the front cover enclose to form a front cavity, and the vibration system, the support frame, and the rear cover enclose to form a rear cavity. The support frame includes a main frame having the through cavity and an enclosure frame fixedly connected to the side of the main frame away from the front cover. The positioning structure is disposed on the main frame. The clamping plate is formed by extending from the side of the enclosure frame connected to the main frame toward the through cavity. The main frame, the enclosure frame, and the clamping plate are integrally disposed. The rear cover is disposed on the side of the enclosure frame away from the main frame.

2. The speaker module according to claim 1, characterized in that, The main frame is made of plastic material. The side of the enclosure frame that is connected to the main frame is bent and extended to one side to form a connecting edge, which is fitted and connected to the main frame.

3. The speaker module according to claim 1, characterized in that, The positioning structure includes a positioning portion extending from the inside of the support frame toward the receiving space. The vibration system includes a voice coil assembly elastically connected to the positioning portion and a diaphragm assembly elastically connected to the support frame and connected to the voice coil assembly. Both the voice coil assembly and the diaphragm assembly are located on the side of the positioning portion near the front cover. The diaphragm assembly seals the side of the support frame near the front cover.

4. The speaker module according to claim 3, characterized in that, The voice coil assembly includes an elastic connector with one end connected to the positioning part, a voice coil connected to the elastic connector on the side away from the positioning part, and a flexible circuit board with both ends fixedly connected to the positioning part and the voice coil, respectively. The side of the voice coil near the front cover is connected to the diaphragm assembly.

5. The speaker module according to claim 4, characterized in that, The diaphragm assembly includes a dome connected to the voice coil and a diaphragm fixed to the dome and radiating outward from the dome to the support frame. The diaphragm and the dome together seal the side of the support frame near the front cover.

6. The speaker module according to claim 4, characterized in that, The magnetic circuit system includes a magnetic cup fixed to the positioning part near the back cover side, a first magnet fixed to the magnetic cup and housed in the voice coil, and a second magnet fixed to the magnetic cup and spaced apart from the first magnet. The side of the second magnet away from the magnetic cup is fixed to the clamping plate, and the voice coil is disposed between the first magnet and the second magnet.

7. The speaker module according to claim 6, characterized in that, The magnetic bowl has a vent hole, and the magnetic circuit system also includes a ventilated isolation component fixed to the magnetic bowl and covering the vent hole. The magnetic bowl, the ventilated isolation component, the support frame, and the back cover together form a filling cavity.

8. The speaker module according to claim 7, characterized in that, The rear cover has a filling hole that communicates with the filling cavity. The front cover protrudes in the area corresponding to the voice coil assembly in a direction away from the voice coil assembly. The protruding area of ​​the front cover has a sound outlet hole. A mesh covering the sound outlet hole is fixed on the side of the front cover away from the voice coil assembly.

9. A method for assembling a loudspeaker module, characterized in that, Includes the following steps: A support frame with a through cavity is provided; wherein, a positioning structure is provided on the inner side of the support frame, and the inner side of the support frame extends toward the through cavity to form a clamping plate; the support frame includes a main frame having the through cavity and an enclosure frame fixedly connected to the side of the main frame away from the front cover, the positioning structure is provided on the main frame, and the clamping plate is formed by the enclosure frame extending toward the through cavity from the side connected to the main frame, the main frame, the enclosure frame and the clamping plate are integrally formed, and a rear cover is provided on the side of the enclosure frame opposite to the main frame; The edge of the vibration system is connected to the positioning structure, and the magnetic circuit system is fixed to the side of the positioning structure away from the vibration system and connected to the clamp, so that the vibration system and the magnetic circuit system are installed in the support frame; The front cover is placed on the side of the support frame closest to the vibration system, and the rear cover is placed on the side of the support frame closest to the magnetic circuit system, so that the vibration system and the front cover enclose to form a front cavity, the vibration system, the support frame and the rear cover enclose to form a rear cavity, and the front cover, the support frame and the rear cover together form an outer shell.

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