Sound production unit

Abstract

The utility model discloses a sounding unit, comprising a basin stand, a diaphragm assembly and a voice coil, the diaphragm assembly comprises a diaphragm, the diaphragm comprises an inner fixing part, a folding ring part and an outer fixing part which are connected in sequence from inside to outside, the outer fixing part is connected with the basin stand, the inner fixing part is provided with lower convex blocks which are arranged oppositely, the lower convex blocks are connected with an auxiliary diaphragm, and the auxiliary diaphragm is connected with a loudspeaker. The auxiliary diaphragm and the voice diaphragm are of an integrated structure which is integrally processed and formed. The voice coil is located between at least one group of two lower protruding blocks which are oppositely arranged, the top of the voice coil is connected with the vibrating diaphragm assembly, and the bottom of the voice coil is connected with the auxiliary diaphragm. According to the sound production unit, the auxiliary film and the sound film are of the integrated structure formed integrally, an independent auxiliary film production assembly line body can be directly omitted during production, the assembly process is simplified, the cost reduction effect is achieved, the auxiliary film is not made of an independent material any more, poor deformation of the auxiliary film during forming and using can be improved, the production yield can be improved, and the production cost is reduced. And the manufacturing cost of the sounding unit is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit. Background Art

[0002] As a common electroacoustic transducer device that converts electrical energy into sound energy, the sound unit plays an indispensable role in the sound amplification system.

[0003] In order to achieve a larger amplitude of the sound unit to achieve higher performance, the industry usually adds a sub-membrane to the sound unit to assist the vibration of the voice coil and improve the polarization phenomenon of the voice coil under large amplitude conditions. Currently, as a single material, the sub-membrane is easily deformed during molding and use, resulting in defects and high manufacturing costs of the sound unit. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a low-cost sound generating unit.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sound unit, comprising:

[0006] basin stand;

[0007] A diaphragm assembly, a sound diaphragm of the diaphragm assembly, the sound diaphragm comprising an inner fixing portion, a folding ring portion and an outer fixing portion connected in sequence from the inside to the outside, the outer fixing portion being connected to the basin frame, the inner fixing portion having lower protrusions arranged opposite to each other, the lower protrusions being connected to a secondary diaphragm, the secondary diaphragm and the sound diaphragm being an integrated structure formed by integral processing;

[0008] A voice coil is located between at least one group of two lower protrusions that are arranged opposite to each other, the top of the voice coil is connected to the diaphragm assembly, and the bottom of the voice coil is connected to the auxiliary membrane.

[0009] Furthermore, the auxiliary film includes a connecting portion and an arc-shaped portion connecting the connecting portion and the lower protrusion.

[0010] Furthermore, the protruding direction of the arc portion is consistent with or opposite to the protruding direction of the folding ring portion.

[0011] Furthermore, the basin frame is made of metal material, and the sound membrane and the basin frame are formed into an integrated structure through injection molding.

[0012] Furthermore, the diaphragm assembly further comprises a metal frame, a partial area of ​​the metal frame is connected to the inner fixing portion, and a partial area of ​​the metal frame is connected to the lower protrusion.

[0013] Furthermore, the metal frame and the sound membrane are formed into an integrated structure through injection molding.

[0014] Furthermore, a partial area of ​​the metal frame is embedded in the inner fixing portion, and a partial area of ​​the metal frame is embedded in the lower protrusion.

[0015] Furthermore, it also includes a centering support plate, which includes an inner mounting portion, a cantilever portion and an outer mounting portion which are connected in sequence, the outer mounting portion is connected to the basin frame, and the inner mounting portion is connected to the lower protrusion.

[0016] Furthermore, the centering support plate further includes an extension arm, a partial area of ​​the inner mounting portion extends toward a direction close to the voice coil to form the extension arm, and the extension arm is fixedly connected to the voice coil.

[0017] Furthermore, the extension arms are correspondingly provided on both sides of the secondary film.

[0018] The beneficial effect of the present invention is that in the sound unit, the auxiliary membrane and the sound membrane are an integrally formed one-piece structure, and a separate auxiliary membrane production assembly line can be directly omitted during production, which is conducive to simplifying the assembly process and achieving the effect of cost reduction. Moreover, the auxiliary membrane is no longer a separate material, which can improve the poor deformation of the auxiliary membrane during molding and use, which is conducive to improving the production yield and further reducing the manufacturing cost of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the sound unit of the first embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional view of the sound unit of the first embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sound-emitting unit of Embodiment 1 of the utility model after the magnetic circuit component is hidden;

[0022] Figure 4 A cross-sectional view of a portion of the structure of the sound-emitting unit of the second structure of the first embodiment of the utility model;

[0023] Figure 5 A cross-sectional view of a portion of the structure of the sound-emitting unit of the third structure of the first embodiment of the present utility model;

[0024] Figure 6 This is a cross-sectional view of a partial structure of a sound-emitting unit of the fourth structure of the first embodiment of the present invention.

[0025] Description of labels:

[0026] 1. Basin stand;

[0027] 2. Diaphragm assembly; 21. Sound membrane; 211. Inner fixing part; 212. Folding ring part; 213. Outer fixing part; 22. Dome; 23. Lower convex block; 24. Secondary membrane; 241. Connecting part; 242. Arc-shaped part; 25. Metal frame; 3. Voice coil;

[0028] 4. Magnetic circuit components;

[0029] 5. Centering support piece; 51. Inner mounting portion; 52. Cantilever portion; 53. Outer mounting portion; 54. Extension arm. DETAILED DESCRIPTION

[0030] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0031] Please refer to Figures 1 to 6 , sound unit, including:

[0032] Basin stand 1;

[0033] A diaphragm assembly 2, wherein the diaphragm assembly 2 has a sound membrane 21, wherein the sound membrane 21 comprises an inner fixing portion 211, a folding ring portion 212 and an outer fixing portion 213 which are sequentially connected from the inside to the outside, wherein the outer fixing portion 213 is connected to the basin frame 1, wherein the inner fixing portion 211 has lower protrusions 23 which are arranged opposite to each other, wherein the lower protrusions 23 are connected to a secondary membrane 24, and wherein the secondary membrane 24 and the sound membrane 21 are an integral structure formed by integral processing;

[0034] The voice coil 3 is located between at least one group of two lower protrusions 23 that are arranged opposite to each other, the top of the voice coil 3 is connected to the diaphragm assembly 2, and the bottom of the voice coil 3 is connected to the auxiliary membrane 24.

[0035] From the above description, it can be seen that the beneficial effect of the utility model is that in the present sound unit, the auxiliary membrane 24 and the sound membrane 21 are an integrally formed one-piece structure, and a separate auxiliary membrane 24 production assembly line can be directly omitted during production, which is beneficial to simplify the assembly process and achieve the effect of cost reduction. Moreover, the auxiliary membrane 24 is no longer a separate material, which can improve the poor deformation of the auxiliary membrane 24 during molding and use, which is beneficial to improve the production yield and further reduce the manufacturing cost of the sound unit.

[0036] Furthermore, the auxiliary film 24 includes a connecting portion 241 and an arc portion 242 connecting the connecting portion 241 and the lower protrusion 23 .

[0037] It can be seen from the above description that the auxiliary film 24 has a simple overall structure and is easy to process and manufacture.

[0038] Furthermore, the protruding direction of the arc portion 242 is consistent with or opposite to the protruding direction of the folding ring portion 212 .

[0039] From the above description, it can be seen that the arc portion 242 can be bent in either a positive direction or a negative direction, which can be determined according to actual needs. Similarly, the folding ring portion 212 can be either a positive folding ring or a negative folding ring, which can be determined according to production requirements.

[0040] Furthermore, the basin frame 1 is made of metal material, and the sound membrane 21 and the basin frame 1 are formed into an integrated structure by injection molding.

[0041] It can be seen from the above description that the connection method between the basin frame 1 and the sound membrane 21 is simple and reliable, which is conducive to simplifying the assembly process of the sound unit and further reducing the manufacturing cost of the sound unit.

[0042] Furthermore, the diaphragm assembly 2 further includes a metal skeleton 25 , a partial area of ​​the metal skeleton 25 is connected to the inner fixing portion 211 , and a partial area of ​​the metal skeleton 25 is connected to the lower protrusion 23 .

[0043] It can be seen from the above description that the metal skeleton 25 can enhance the rigidity of the local area of ​​the diaphragm assembly 2, which is beneficial to improving the acoustic performance of the sound unit.

[0044] Furthermore, the metal skeleton 25 and the sound membrane 21 are formed into an integrated structure through injection molding.

[0045] It can be seen from the above description that the connection method between the metal skeleton 25 and the sound membrane 21 is simple and reliable, which is conducive to simplifying the assembly process of the sound unit and further reducing the manufacturing cost of the sound unit.

[0046] Furthermore, a part of the metal frame 25 is embedded in the inner fixing portion 211 , and a part of the metal frame 25 is embedded in the lower protrusion 23 .

[0047] It can be seen from the above description that the metal frame 25 embedded in the sound membrane 21 can reduce the consumables in manufacturing the sound membrane 21, which is conducive to reducing material costs.

[0048] Furthermore, it also includes a centering support piece 5, which includes an inner mounting portion 51, a cantilever portion 52 and an outer mounting portion 53 connected in sequence, the outer mounting portion 53 is connected to the basin frame 1, and the inner mounting portion 51 is connected to the lower protrusion 23.

[0049] It can be seen from the above description that the arrangement of the centering support 5 can further improve the rolling vibration and polarization phenomenon of the voice coil 3, which is beneficial to further improve the acoustic performance of the sound unit.

[0050] Furthermore, the centering support plate 5 further includes an extension arm 54 . A portion of the inner mounting portion 51 extends toward the direction close to the voice coil 3 to form the extension arm 54 . The extension arm 54 is fixedly connected to the voice coil 3 .

[0051] It can be seen from the above description that the centering support plate 5 is directly connected to the voice coil 3 , so as to better correct the deviation of the voice coil 3 .

[0052] Furthermore, the extension arms 54 are correspondingly disposed on both sides of the auxiliary film 24 .

[0053] It can be seen from the above description that the extending arm 54 is reasonably disposed at a position so that the centering support plate 5 can provide a more balanced supporting force for the voice coil 3 .

[0054] Embodiment 1

[0055] Please refer to Figures 1 to 6 , Embodiment 1 of the present utility model is: a sound unit, which can be applied to electronic devices such as mobile phones, tablet computers, smart watches, game controllers, etc.

[0056] Please combine Figures 1 to 3 The sound unit includes a basin frame 1 and a vibration component and a magnetic circuit component 4 respectively connected to the basin frame 1, the magnetic circuit component 4 has a magnetic gap, the vibration component includes a diaphragm component 2 and a voice coil 3 connected to the diaphragm component 2, the voice coil 3 is arranged corresponding to the magnetic gap, the diaphragm component 2 includes a sound membrane 21, and the sound membrane 21 is fixed to the basin frame 1 by glue. Specifically, the sound membrane 21 includes an inner fixing part 211, a folding ring part 212 and an outer fixing part 213 connected in sequence from the inside to the outside, the outer fixing part 213 is connected to the basin frame 1, the inner fixing part 211 has a lower protrusion 23 arranged relatively, and the lower protrusion 23 is connected to a secondary membrane 24, the secondary membrane 24 and the sound membrane 21 are an integrated structure formed by integral processing. Specifically, the secondary membrane 24 and the sound membrane 21 can be an integrated structure formed by integral injection molding or an integrated structure formed by hot pressing, which can be selected according to actual production needs.

[0057] In this embodiment, the diaphragm assembly 2 further includes a dome 22 connected to the inner fixing portion 211 , and the voice coil 3 is fixedly connected to the dome 22 .

[0058] Specifically, the voice coil 3 is located between at least one group of two lower protrusions 23 that are arranged opposite to each other, the top of the voice coil 3 is connected to the diaphragm assembly 2, and the bottom of the voice coil 3 is connected to the auxiliary membrane 24. More specifically, the auxiliary membrane 24 includes a connecting portion 241 and an arc portion 242 connecting the connecting portion 241 and the lower protrusion 23. Preferably, the connecting position between the auxiliary membrane 24 and the lower protrusion 23 is located at the bottom end of the lower protrusion 23.

[0059] To facilitate processing, optionally, the basin frame 1 is made of metal material, and the sound membrane 21 and the basin frame 1 are formed into an integrated structure by injection molding.

[0060] In order to improve the rigidity of a local area of ​​the diaphragm assembly 2, optionally, the diaphragm assembly 2 further includes a metal skeleton 25, a partial area of ​​the metal skeleton 25 is connected to the inner fixing portion 211, and a partial area of ​​the metal skeleton 25 is connected to the lower protrusion 23. Preferably, the metal skeleton 25 and the sound membrane 21 are formed into an integral structure by injection molding. Further preferably, a partial area of ​​the metal skeleton 25 is embedded in the inner fixing portion 211, and a partial area of ​​the metal skeleton 25 is embedded in the lower protrusion 23.

[0061] Optionally, the sound unit further includes a centering support plate 5 , which includes an inner mounting portion 51 , a cantilever portion 52 and an outer mounting portion 53 which are connected in sequence, the outer mounting portion 53 is connected to the basin frame 1 , and the inner mounting portion 51 is connected to the lower protrusion 23 .

[0062] Preferably, the centering support 5 further includes an extension arm 54, and a portion of the inner mounting portion 51 extends toward the direction close to the voice coil 3 to form the extension arm 54, and the extension arm 54 is fixedly connected to the voice coil 3. In a specific product, the voice coil 3 can also be electrically connected to an external power supply through the centering support 5.

[0063] The extension arms 54 are correspondingly disposed on both sides of the auxiliary film 24 . Preferably, the extension arms 54 on both sides of the auxiliary film 24 are symmetrically disposed.

[0064] The protruding direction of the arc portion 242 is consistent with or opposite to the protruding direction of the folding ring portion 212. The protruding direction of the arc portion 242 and the protruding direction of the folding ring portion 212 have at least the following four forms:

[0065] 1. The arc portion 242 protrudes downward, and the folding ring portion 212 is a reverse folding ring (such as Figure 2 shown).

[0066] Second, the arc portion 242 protrudes downward, and the folding ring portion 212 is a positive folding ring (such as Figure 4 shown).

[0067] 3. The arc portion 242 protrudes upward, and the folding ring portion 212 is a reverse folding ring (such as Figure 5 shown).

[0068] Fourth, the arc portion 242 protrudes upward, and the folding ring portion 212 is a positive folding ring (such as Figure 6 shown).

[0069] To sum up, in the sound unit provided by the utility model, the auxiliary membrane and the sound membrane are an integrally molded one-piece structure, and a separate auxiliary membrane production assembly line can be directly omitted during production, which is conducive to simplifying the assembly process and achieving the effect of cost reduction. Moreover, the auxiliary membrane is no longer a separate material, which can improve the poor deformation of the auxiliary membrane during molding and use, which is conducive to improving the production yield and further reducing the manufacturing cost of the sound unit.

[0070] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sound generating unit, characterized in that: include basin stand; A diaphragm assembly, a sound diaphragm of the diaphragm assembly, the sound diaphragm comprising an inner fixing portion, a folding ring portion and an outer fixing portion connected in sequence from the inside to the outside, the outer fixing portion being connected to the basin frame, the inner fixing portion having lower protrusions arranged opposite to each other, the lower protrusions being connected to a secondary diaphragm, the secondary diaphragm and the sound diaphragm being an integrated structure formed by integral processing; A voice coil is located between at least one group of two lower protrusions that are arranged opposite to each other, the top of the voice coil is connected to the diaphragm assembly, and the bottom of the voice coil is connected to the auxiliary membrane.

2. The sound generating unit according to claim 1, characterized in that: The auxiliary film includes a connecting portion and an arc portion connecting the connecting portion and the lower protrusion.

3. The sound generating unit according to claim 2, characterized in that: The protruding direction of the arc portion is consistent with or opposite to the protruding direction of the folding ring portion.

4. The sound generating unit according to claim 1, characterized in that: The basin frame is made of metal material, and the sound membrane and the basin frame are formed into an integrated structure through injection molding.

5. The sound generating unit according to claim 1, characterized in that: The diaphragm assembly further includes a metal frame, a partial area of ​​the metal frame is connected to the inner fixing portion, and a partial area of ​​the metal frame is connected to the lower protrusion.

6. The sound generating unit according to claim 5, characterized in that: The metal frame and the sound membrane are formed into an integrated structure through injection molding.

7. The sound generating unit according to claim 6, characterized in that: A partial area of ​​the metal frame is embedded in the inner fixing portion, and a partial area of ​​the metal frame is embedded in the lower protrusion.

8. The sound generating unit according to claim 1, characterized in that: It also includes a centering support piece, which includes an inner mounting portion, a cantilever portion and an outer mounting portion which are connected in sequence, the outer mounting portion is connected to the basin frame, and the inner mounting portion is connected to the lower protrusion.

9. The sound generating unit according to claim 8, characterized in that: The centering support plate further includes an extension arm. A partial area of ​​the inner mounting portion extends toward a direction close to the voice coil to form the extension arm, and the extension arm is fixedly connected to the voice coil.

10. The sound generating unit according to claim 9, characterized in that: The extension arms are correspondingly arranged on both sides of the auxiliary film.

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