sound production unit

Abstract

The utility model discloses a sound unit, including magnetic circuit subassembly, center support piece and two voice coil, magnetic circuit subassembly includes yoke and respectively is located on the center magnetic structure and the side magnetic structure of yoke, and the side magnetic structure surrounds the center magnetic structure and sets, and the magnetic circuit subassembly has the installation through -hole of the bottom surface of intercommunication yoke with the top surface of center magnetic structure, center support piece includes the outer fixed part, cantilever part, inner fixed part and bending portion that are connected in proper order, and the outer fixed part has internal soldering tray, and the inner fixed part is fixed on the top surface of center magnetic structure, and the bending portion is fixedly connected with the inner wall of installation through -hole, and the bending portion has the outer soldering tray of electrically conducting with internal soldering tray, one voice coil is fixed on the top surface of outer fixed part, and another voice coil is fixed on the bottom surface of outer fixed part, and voice coil and internal soldering tray weld and conduct. The utility model discloses a sound unit structure novel, and the performance is good.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic transducer technology, and in particular to a sound generating unit. Background Technology

[0002] As a commonly used electroacoustic transducer that converts electrical energy into sound energy, the sound-generating unit plays an indispensable role in the sound amplifier system.

[0003] With the development of consumer electronics products such as mobile phones and tablets, the performance requirements for thinner and lighter sound units are getting higher and higher. The internal space of existing sound units is not used reasonably, and the total volume of magnetic circuit components cannot be set to be larger, which makes it difficult to improve the performance of sound units. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high-performance sound generating unit.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0006] A magnetic circuit assembly, comprising a yoke and a central magnetic structure and a side magnetic structure respectively disposed on the yoke, the side magnetic structure being arranged around the central magnetic structure, and the magnetic circuit assembly having a mounting through hole connecting the bottom surface of the yoke and the top surface of the central magnetic structure;

[0007] A centering support plate includes an outer fixing part, a cantilever part, an inner fixing part, and a bending part connected in sequence. The outer fixing part has an inner solder pad. The inner fixing part is fixed to the top surface of the central magnetic structure. The bending part is fixedly connected to the inner wall of the mounting through hole. The bending part has an outer solder pad that is electrically connected to the inner solder pad.

[0008] Two voice coils are provided, one of which is fixed to the top surface of the outer fixing part, and the other is fixed to the bottom surface of the outer fixing part. The voice coils are soldered to the inner pad for electrical connection.

[0009] Furthermore, the external fixing part is rectangular in shape, and the voice coil is bonded to the external fixing part.

[0010] Furthermore, at least one set of opposite sides of the external fixing part is respectively connected to the cantilever part.

[0011] Furthermore, the four sides of the external fixing part are respectively connected to the cantilever part.

[0012] Furthermore, the centering support is a centrally symmetric structure or a planar symmetric structure.

[0013] Furthermore, the mounting through hole is located in the central region of the central magnetic structure.

[0014] Furthermore, the edge magnetic structure includes an edge magnet and an edge washer. The bottom surface of the edge magnet is connected to the yoke, and the top surface of the edge magnet is connected to the edge washer. The edge magnet is a continuous and complete frame structure. Alternatively, the edge magnet includes multiple sub-magnets, which are arranged in a frame structure, with adjacent sub-magnets in contact with each other.

[0015] Furthermore, the yoke includes a body and a flange disposed along the edge of the body, and the outer wall surface of the edge magnetic structure is fixedly connected to the inner wall surface of the flange.

[0016] Furthermore, the edge magnet is bonded to the flange; and / or,

[0017] The edge wash is welded or bonded to the flange.

[0018] Furthermore, it also includes a diaphragm assembly that connects the flange and the voice coil located above the outer fixing portion.

[0019] The beneficial effects of this utility model are as follows: The sound-generating unit has a novel structure. The central magnetic structure has a first through-hole, and the outer solder pad of the centering support is located within this first through-hole. This eliminates the need to reserve space outside the voice coil for the outer solder pad and cantilever, allowing for a larger overall volume of the side magnetic structure. This, in turn, increases the BL value of the sound-generating unit, achieving the goal of improving its performance. The sound-generating unit employs a dual voice coil architecture, which effectively increases the driving force of the diaphragm assembly, thereby enhancing the loudness and performance of the unit. Furthermore, the inner fixing part of the centering support is fixed to the top surface of the central magnetic structure, leaving sufficient space below the outer fixing part for the voice coil. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the sound-generating unit;

[0021] Figure 2 A schematic diagram of the overall structure of the sound-generating unit;

[0022] Figure 3 This is a schematic diagram of the internal structure of the sound-generating unit.

[0023] Label Explanation:

[0024] 1. Diaphragm assembly;

[0025] 2. Yoke; 21. Body; 22. Flange;

[0026] 3. Central magnetic structure; 31. Central magnet; 32. Central washer;

[0027] 4. Edge magnetic structure; 41. Edge magnet; 42. Edge washer;

[0028] 5. Install through holes;

[0029] 6. Voice coil;

[0030] 7. Centering support; 71. External fixation part; 72. Cantilever part; 73. Internal fixation part; 74. Bending part. Detailed Implementation

[0031] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] Please refer to Figures 1 to 3 The sound-generating unit includes a magnetic circuit assembly, a centering support 7, and two voice coils 6. The magnetic circuit assembly includes a yoke 2 and a central magnetic structure 3 and a side magnetic structure 4 respectively disposed on the yoke 2. The side magnetic structure 4 is arranged around the central magnetic structure 3. The magnetic circuit assembly has a mounting through hole 5 connecting the bottom surface of the yoke 2 and the top surface of the central magnetic structure 3. The centering support 7 includes an outer fixing part 71, a cantilever part 72, an inner fixing part 73, and a bending part 74 connected in sequence. The outer fixing part 71 has an inner solder pad. The inner fixing part 73 is fixed to the top surface of the central magnetic structure 3. The bending part 74 is fixedly connected to the inner wall of the mounting through hole 5. The bending part 74 has an outer solder pad that is electrically connected to the inner solder pad. One voice coil 6 is fixed to the top surface of the outer fixing part 71, and the other voice coil 6 is fixed to the bottom surface of the outer fixing part 71. The voice coil 6 is soldered to the inner solder pad for electrical connection.

[0033] As can be seen from the above description, the beneficial effects of this utility model are as follows: The sound-generating unit has a novel structure. The central magnetic structure 3 is provided with a first through hole, and the outer solder pad of the centering support 7 is located inside the first through hole. There is no need to reserve space on the outside of the voice coil 6 for the outer solder pad and the cantilever 72, so that the overall volume of the side magnetic structure 4 can be set to be larger, thereby improving the BL value of the sound-generating unit and achieving the goal of improving the performance of the sound-generating unit. This sound-generating unit adopts a dual voice coil 6 architecture, which can effectively improve the driving force of the diaphragm assembly 1 in the sound-generating unit, thereby improving the loudness of the sound-generating unit and thus improving the performance of the sound-generating unit. Moreover, the inner fixing part 73 of the centering support 7 is fixed to the top surface of the central magnetic structure 3, so as to leave enough space below the outer fixing part 71 to set the voice coil 6.

[0034] Furthermore, the outer fixing part 71 is rectangular in shape, and the voice coil 6 is bonded to the outer fixing part 71.

[0035] As can be seen from the above description, the larger bonding surface between the centering support 7 and the voice coil 6 is beneficial to improving the stability of the connection between the centering support 7 and the voice coil 6.

[0036] Furthermore, at least one pair of opposite sides of the external fixing part 71 are respectively connected to the cantilever part 72.

[0037] As can be seen from the above description, the centering support 7 has a stable structure.

[0038] Furthermore, the four sides of the external fixing part 71 are respectively connected to the cantilever part 72.

[0039] As can be seen from the above description, the centering support 7 distributes the force, which helps to extend the service life of the centering support 7.

[0040] Furthermore, the centering support 7 is a centrally symmetric structure or a planar symmetric structure.

[0041] As can be seen from the above description, the centering support 7 with symmetrical structure has good correction capability for the voice coil 6 and can withstand the weight of the two voice coils 6.

[0042] Furthermore, the mounting through hole 5 is located in the central region of the central magnetic structure 3.

[0043] As can be seen from the above description, the magnetic utilization rate of the central region of the central magnetic structure 3 is low. Placing the mounting through hole 5 in the central region of the central magnetic structure 3 can effectively reduce the influence of the mounting through hole 5 on the magnetic field of the central magnetic structure 3.

[0044] Furthermore, the edge magnetic structure 4 includes an edge magnet 41 and an edge washer 42. The bottom surface of the edge magnet 41 is connected to the yoke 2, and the top surface of the edge magnet 41 is connected to the edge washer 42. The edge magnet 41 is a continuous and complete frame structure, or the edge magnet 41 includes multiple sub-magnets, and the multiple sub-magnets are arranged in a frame structure, with adjacent sub-magnets in contact with each other.

[0045] As can be seen from the above description, the overall volume of the edge magnet 41 can be set to be relatively large, which is conducive to enhancing the magnetic field strength of the sound unit, increasing the BL value of the sound unit, and thus improving the performance of the sound unit.

[0046] Furthermore, the yoke 2 includes a body 21 and a flange 22 disposed along the edge of the body 21, and the outer wall surface of the edge magnetic structure 4 is fixedly connected to the inner wall surface of the flange 22.

[0047] As can be seen from the above description, the fixed connection between the outer wall of the edge magnetic structure 4 and the inner wall of the flange 22 is beneficial to improving the structural stability of the magnetic circuit assembly.

[0048] Furthermore, the edge magnet 41 is bonded to the flange 22; and / or,

[0049] The edge washer 42 is welded or bonded to the flange 22.

[0050] As can be seen from the above description, there are multiple ways to connect the edge magnetic structure 4 and the flange 22, which helps to enrich the diversity of the sound-generating unit.

[0051] Furthermore, it also includes a diaphragm assembly 1, which connects the flange 22 and the voice coil 6 located above the outer fixing part 71.

[0052] As can be seen from the above description, the flange 22 can be used as a basin stand, saving the basin stand material and thus reducing the manufacturing cost of the sound unit.

[0053] Please refer to Figures 1 to 3 One embodiment of this utility model is as follows: a sound-generating unit, including a diaphragm assembly 1, a magnetic circuit assembly, a centering support 7, and two voice coils 6. The magnetic circuit assembly includes a yoke 2 and a central magnetic structure 3 and a side magnetic structure 4 respectively disposed on the yoke 2. The side magnetic structure 4 is arranged around the central magnetic structure 3. The magnetic circuit assembly has a mounting through hole 5 connecting the bottom surface of the yoke 2 and the top surface of the central magnetic structure 3. The central magnetic structure 3 includes a central magnet 31 and a central washer 32. The bottom surface of the central magnet 31 is connected to the yoke 2, and the bottom surface of the central washer 32 is connected to the top surface of the central magnet 31. The mounting through hole 5 penetrates the central magnet 31 and the central washer 32. Preferably, the mounting through hole 5... Located in the central region of the central magnetic structure 3; the centering support 7 includes an outer fixing part 71, a cantilever part 72, an inner fixing part 73, and a bending part 74 connected in sequence. The outer fixing part 71 has an inner solder pad, and the inner fixing part 73 is fixed to the top surface of the central magnetic structure 3. Specifically, the inner fixing part 73 is bonded to the top surface of the central washer 32; the bending part 74 is fixedly connected to the inner wall of the mounting through hole 5, and the bending part 74 has an outer solder pad that is electrically connected to the inner solder pad. Optionally, the bending part 74 is bonded to the inner wall of the mounting through hole 5; one voice coil 6 is fixed to the top surface of the outer fixing part 71, and another voice coil 6 is fixed to the bottom surface of the outer fixing part 71. The voice coil 6 is welded to the inner solder pad for electrical connection.

[0054] In this embodiment, the yoke 2 includes a body 21 and a flange 22 disposed along the edge of the body 21. The diaphragm assembly 1 connects the flange 22 and the voice coil 6 located above the outer fixing part 71. Optionally, the flange 22 is formed by bending a portion of the body 21.

[0055] To improve the stability of the connection between the external fixing part 71 and the voice coil 6, the external fixing part 71 is rectangular in shape, and preferably the voice coil 6 is bonded to the external fixing part 71.

[0056] Preferably, at least one pair of opposite sides of the external fixing part 71 are respectively connected to the cantilever part 72. In this embodiment, the four sides of the external fixing part 71 are respectively connected to the cantilever part 72, and the force on the centering support 7 is distributed, which helps to extend the service life of the centering support 7. Further, the centering support 7 is a centrally symmetrical structure or a planar symmetrical structure.

[0057] The edge magnetic structure 4 includes an edge magnet 41 and an edge washer 42. The bottom surface of the edge magnet 41 is connected to the yoke 2, and the top surface of the edge magnet 41 is connected to the edge washer 42. In this embodiment, the edge magnet 41 is a continuous and complete frame structure. In other embodiments, the edge magnet 41 includes multiple sub-magnets, which are arranged in a frame structure, with adjacent sub-magnets in contact with each other.

[0058] Optionally, the outer wall surface of the edge magnetic structure 4 is fixedly connected to the inner wall surface of the flange 22. Specifically, the edge magnet 41 is bonded to the flange 22; and / or, the edge washer 42 is welded or bonded to the flange 22.

[0059] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sound-generating unit, characterized in that, include A magnetic circuit assembly, comprising a yoke and a central magnetic structure and a side magnetic structure respectively disposed on the yoke, the side magnetic structure being arranged around the central magnetic structure, and the magnetic circuit assembly having a mounting through hole connecting the bottom surface of the yoke and the top surface of the central magnetic structure; A centering support plate includes an outer fixing part, a cantilever part, an inner fixing part, and a bending part connected in sequence. The outer fixing part has an inner solder pad. The inner fixing part is fixed to the top surface of the central magnetic structure. The bending part is fixedly connected to the inner wall of the mounting through hole. The bending part has an outer solder pad that is electrically connected to the inner solder pad. Two voice coils are provided, one of which is fixed to the top surface of the outer fixing part, and the other is fixed to the bottom surface of the outer fixing part. The voice coils are soldered to the inner pad for electrical connection.

2. The sound-generating unit according to claim 1, characterized in that, The external fixing part is rectangular in shape, and the voice coil is bonded to the external fixing part.

3. The sound-generating unit according to claim 2, characterized in that, The external fixing part is connected to the cantilever part by at least one set of opposite sides.

4. The sound-generating unit according to claim 3, characterized in that, The four sides of the external fixing part are respectively connected to the cantilever part.

5. The sound-generating unit according to claim 1, characterized in that, The centering support is a centrally symmetrical structure or a planar symmetrical structure.

6. The sound-generating unit according to claim 1, characterized in that, The mounting hole is located in the central region of the central magnetic structure.

7. The sound-generating unit according to claim 1, characterized in that, The edge magnetic structure includes an edge magnet and an edge washer. The bottom surface of the edge magnet is connected to the yoke, and the top surface of the edge magnet is connected to the edge washer. The edge magnet is a continuous and complete frame structure. Alternatively, the edge magnet includes multiple sub-magnets, which are arranged in a frame structure, with adjacent sub-magnets in contact with each other.

8. The sound-generating unit according to claim 7, characterized in that, The yoke includes a body and a flange provided along the edge of the body, and the outer wall surface of the edge magnetic structure is fixedly connected to the inner wall surface of the flange.

9. The sound-generating unit according to claim 8, characterized in that, The edge magnet is bonded to the flange; and / or The edge wash is welded or bonded to the flange.

10. The sound-generating unit according to claim 8, characterized in that, It also includes a diaphragm assembly that connects the flange and the voice coil located above the outer fixing portion.

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