Sound production unit

Abstract

The utility model discloses a sound production unit, which comprises a basin stand, a vibration assembly, a magnetic circuit assembly and a shaping support chip, and is characterized in that the vibration assembly comprises a diaphragm assembly and a voice coil, and the diaphragm assembly is connected with the basin stand and the voice coil; the magnetic circuit assembly is connected with the basin stand, the magnetic circuit assembly comprises a yoke and a central magnetic structure arranged on the yoke, and the yoke is provided with a boss and two through holes; the shaping support chip comprises extension parts, a central part, a cantilever part and an outer fixing part which are connected in sequence, the central part is fixedly mounted on the boss, the outer fixing part comprises an ascending arm and a fixing arm, the two ends of the central part are connected with the extension parts respectively, each extension part comprises a descending arm and a mounting arm, the descending arm penetrates through the through hole, and the mounting arm is fixed on the yoke. The sound production unit is compact and novel in structure, and the shaping support chip is installed in the hollow area of the central magnetic structure, so that the total volume of the edge magnetic structure can be set to be larger, thereby improving the BL value of the sound production unit, and improving the performance of the sound production unit.

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 pursuit of high performance of the sound unit, existing sound units usually use shaped supports as the conductive parts of the sound unit. However, the shaped supports occupy the corner area of ​​the sound unit, so that the magnetic circuit assembly needs to be provided with an air-avoidance structure in the corner area of ​​the sound unit. The existence of the air-avoidance structure has a great impact on the magnetic circuit assembly, so that it is difficult to improve the performance without changing the total volume of the sound unit. Utility Model Content

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

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

[0006] basin rack;

[0007] A vibration assembly, the vibration assembly comprising a diaphragm assembly and a voice coil, the diaphragm assembly connecting the basin frame and the voice coil;

[0008] A magnetic circuit assembly connected to the basin frame, comprising a yoke and a central magnetic structure provided on the yoke, wherein the central magnetic structure is in the shape of a ring frame, the yoke is provided with a boss protruding into the hollow area of ​​the central magnetic structure, and the yoke is further provided with two through-holes, wherein the boss is located between the two through-holes;

[0009] A shaping support piece, wherein the shaping support piece includes an extension portion, a central portion, a cantilever portion and an external fixing portion connected in sequence, the central portion is fixedly mounted on the boss, the cantilever portions are respectively connected to both sides of the central portion, the external fixing portion includes a rising arm and a fixed arm, the rising arm connects the fixed arm and the cantilever portion, the fixed arm is fixedly mounted on the diaphragm assembly, the two ends of the central portion are respectively connected to the extension portion, the extension portion includes a descending arm and a mounting arm, the descending arm passes through the through hole, the descending arm connects the central portion and the mounting arm, and the mounting arm is fixed on the yoke.

[0010] Furthermore, the fixed arm is arranged close to the long side of the voice coil, or the fixed arm is arranged close to the short side of the voice coil.

[0011] Furthermore, the fixed arm is provided with an inner pad which is welded and conductively connected to the lead of the voice coil, and the mounting arm is provided with an outer pad which is electrically connected to the inner pad.

[0012] Furthermore, a first avoidance groove for avoiding the lead wire of the voice coil is provided on the top of the central magnetic structure.

[0013] Furthermore, a second avoidance groove for avoiding the fixed arm is provided on the top of the central magnetic structure.

[0014] Furthermore, the external fixing portion is in an inverted L-shape.

[0015] Furthermore, the extension portion is L-shaped.

[0016] Furthermore, the two mounting arms are arranged close to each other.

[0017] Furthermore, the boss and the yoke are an integral structure formed by integral processing.

[0018] Furthermore, the boss is a convex hump formed by stamping.

[0019] The beneficial effects of the present invention are as follows: the sound unit has a compact and novel structure, and the shaped support is installed in the hollow area of ​​the central magnetic structure, so that the corner area of ​​the sound unit does not need to be provided with a avoidance structure for avoiding the shaped support, so that the total volume of the side magnetic structure can be set larger, thereby improving the BL value of the sound unit and enhancing the performance of the sound unit; the central area of ​​the central magnetic structure has a low magnetic utilization rate, and hollowing out the central area of ​​the central magnetic structure has little impact on the magnetic circuit component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional view of the sound unit of the first embodiment of the present invention;

[0021] Figure 2 This is a structural diagram of a portion of the sound-emitting unit according to the first embodiment of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the shaped support piece in the sound-emitting unit according to the first embodiment of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the yoke in the sound unit of Example 1 of the present utility model;

[0024] Figure 5 This is a cross-sectional view of the sound unit of the second embodiment of the present invention;

[0025] Figure 6 This is a schematic structural diagram of a portion of the sound-emitting unit according to the second embodiment of the present invention;

[0026] Figure 7 This is a structural diagram of the shaped support piece in the sound-emitting unit of the second embodiment of the present utility model.

[0027] Description of labels:

[0028] 1. Basin rack;

[0029] 2. Vibration assembly; 21. Diaphragm assembly; 211. Skeleton; 212. Diaphragm; 213. Dome; 214. Support arm; 22. Voice coil;

[0030] 3. Magnetic circuit assembly; 31. Yoke; 311. Boss; 312. Perforation; 32. Center magnetic structure; 321. First avoidance groove; 322. Second avoidance groove; 33. Side magnetic structure;

[0031] 4. Shaped support piece; 41. Extension part; 411. Descending arm; 412. Mounting arm; 42. Center part; 43. Cantilever part; 44. External fixing part; 441. Rising arm; 442. Fixed arm. DETAILED DESCRIPTION

[0032] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0033] Please refer to Figures 1 to 7 , sound unit, including:

[0034] Basin rack 1;

[0035] A vibration assembly 2, comprising a diaphragm assembly 21 and a voice coil 22, wherein the diaphragm assembly 21 connects the basin frame 1 and the voice coil 22;

[0036] A magnetic circuit assembly 3 is connected to the basin frame 1 and includes a yoke 31 and a central magnetic structure 32 provided on the yoke 31. The central magnetic structure 32 is in the shape of a ring frame. The yoke 31 is provided with a boss 311 protruding into the hollow area of ​​the central magnetic structure 32. The yoke 31 is also provided with two through-holes 312, and the boss 311 is located between the two through-holes 312.

[0037] The shaping support piece 4 includes an extension portion 41, a central portion 42, a cantilever portion 43 and an external fixing portion 44 connected in sequence. The central portion 42 is fixedly mounted on the boss 311. The cantilever portions 43 are respectively connected to both sides of the central portion 42. The external fixing portion 44 includes a rising arm 441 and a fixed arm 442. The rising arm 441 connects the fixed arm 442 and the cantilever portion 43. The fixed arm 442 is fixedly mounted on the diaphragm assembly 21. The two ends of the central portion 42 are respectively connected to the extension portion 41. The extension portion 41 includes a descending arm 411 and a mounting arm 412. The descending arm 411 passes through the through-hole 312. The descending arm 411 connects the central portion 42 and the mounting arm 412. The mounting arm 412 is fixed to the yoke 31.

[0038] From the above description, it can be seen that the beneficial effects of the present invention are: the sound unit has a compact and novel structure, and the shaped support 4 is installed in the hollow area of ​​the central magnetic structure 32, so that the corner area of ​​the sound unit does not need to be provided with a avoidance structure for avoiding the shaped support 4, so that the total volume of the side magnetic structure 33 can be set larger, thereby improving the BL value of the sound unit and enhancing the performance of the sound unit.

[0039] Furthermore, the fixed arm 442 is disposed close to the long side of the voice coil 22 , or the fixed arm 442 is disposed close to the short side of the voice coil 22 .

[0040] It can be seen from the above description that the specific position of the fixed arm 442 can be set as needed.

[0041] Furthermore, the fixed arm 442 is provided with an inner pad that is welded and conductive to the lead of the voice coil 22 , and the mounting arm 412 is provided with an outer pad that is electrically connected to the inner pad.

[0042] As can be seen from the above description, the external power supply can utilize the support plate 4 to supply power to the voice coil 22 .

[0043] Furthermore, a first avoidance groove 321 for avoiding the lead wire of the voice coil 22 is provided on the top of the central magnetic structure 32 .

[0044] As can be seen from the above description, the provision of the first avoidance groove 321 can prevent the lead wire of the voice coil 22 from colliding with the central magnetic structure 32, which is beneficial to ensuring the acoustic performance of the sound unit.

[0045] Furthermore, a second avoidance groove 322 for avoiding the fixed arm 442 is provided on the top of the central magnetic structure 32 .

[0046] It can be seen from the above description that the provision of the second avoidance groove 322 can prevent the fixed arm 442 from colliding with the central magnetic structure 32, which is beneficial to ensuring the acoustic performance of the sound unit.

[0047] Furthermore, the outer fixing portion 44 is in an inverted L-shape.

[0048] Furthermore, the extension portion 41 is L-shaped.

[0049] As can be seen from the above description, the outer fixing portion 44 and the outer extension portion 41 have a simple structure and are easy to form.

[0050] Furthermore, the two mounting arms 412 are arranged close to each other.

[0051] As can be seen from the above description, the two mounting arms 412 are arranged close to each other, which can facilitate the design of the conductive wiring inside the shaped support piece 4.

[0052] Furthermore, the boss 311 and the yoke 31 are an integral structure formed by integral processing.

[0053] As can be seen from the above description, the boss 311 is easy to manufacture and process, and during the process of assembling the sound unit, no additional step is required to connect the convex strip and the yoke 31 .

[0054] Furthermore, the boss 311 is a convex bump formed by stamping.

[0055] As can be seen from the above description, the boss 311 is easy to form, which is beneficial to controlling the manufacturing cost of the yoke 31 .

[0056] Example 1

[0057] Please refer to Figures 1 to 4 The first embodiment of the present invention is as follows: a sound unit includes a frame 1, a vibration assembly 2, a magnetic circuit assembly 3, and a shaped support plate 4. The vibration assembly 2 includes a diaphragm assembly 21 and a voice coil 22. The diaphragm assembly 21 connects the frame 1 and the voice coil 22. In this embodiment, the diaphragm assembly 21 includes a skeleton 211 and a sound membrane 212 arranged around the skeleton 211. The sound membrane 212 is connected to the frame 1. The skeleton 211 has a window, and the window has a downwardly protruding support arm 214. The skeleton 211 is provided with a dome 213 covering the window.

[0058] The magnetic circuit assembly 3 is connected to the basin frame 1. The magnetic circuit assembly 3 includes a yoke 31 and a central magnetic structure 32 and a side magnetic structure 33 respectively provided on the yoke 31. The side magnetic structure 33 and the central magnetic structure 32 are respectively in the shape of a ring frame. The side magnetic structure 33 is arranged around the central magnetic structure 32. A magnetic gap is formed between the side magnetic structure 33 and the central magnetic structure 32 for the movement of the voice coil 22. The yoke 31 is provided with a boss 311 protruding into the hollow area of ​​the central magnetic structure 32. The yoke 31 is also provided with two through-holes 312. The boss 311 is located between the two through-holes 312.

[0059] The shaping support piece 4 is an FPC soft board, and the shaping support piece 4 includes an extension part 41, a central part 42, a cantilever part 43 and an external fixing part 44 connected in sequence. The central part 42 is fixedly mounted on the boss 311, and the cantilever parts 43 are connected to both sides of the central part 42 respectively. The external fixing part 44 includes a rising arm 441 and a fixed arm 442. The rising arm 441 connects the fixed arm 442 and the cantilever part 43. The bottom end of the support arm 214 is fixedly connected to the end of the cantilever part 43 away from the central part 42. The fixed arm 442 is fixedly mounted on the diaphragm assembly 21. The two ends of the central part 42 are respectively connected to the extension part 41. The extension part 41 includes a descending arm 411 and a mounting arm 412. The descending arm 411 passes through the through-hole 312, connects the central part 42 and the mounting arm 412, and the mounting arm 412 is fixed on the yoke 31.

[0060] The fixed arm 442 is provided with an inner pad that is welded to the lead of the voice coil 22 , and the mounting arm 412 is provided with an outer pad that is electrically connected to the inner pad. The outer pad is exposed to the sound unit.

[0061] In this embodiment, the fixed arm 442 is disposed close to the long side of the voice coil 22 . Specifically, the shaping support 4 is a rotationally symmetrical structure.

[0062] The top of the central magnetic structure 32 is provided with a first avoidance groove 321 for avoiding the leads of the voice coil 22, and a second avoidance groove 322 for avoiding the fixed arm 442. Specifically, the central magnetic structure 32 includes a central magnetic steel and a central washer. The bottom of the central magnetic steel is connected to the yoke 31, and the top of the central magnetic steel is connected to the central washer. The first avoidance groove 321 and the second avoidance groove 322 are provided on the top of the central washer.

[0063] Optionally, the outer fixing portion 44 is in an inverted L-shape; the extension portion 41 is in an L-shape, and preferably the two mounting arms 412 are arranged close to each other.

[0064] As a preferred embodiment, the boss 311 and the yoke 31 are integrally formed as a one-piece structure. In this embodiment, the boss 311 is a stamped convex bump. Further preferably, the through-hole 312 is provided close to the convex bump. In this way, when stamping the boss 311, the through-hole 312 can also play a positioning and partitioning role, thereby making the boss 311 easier to stamp.

[0065] Example 2

[0066] Please refer to Figures 5 to 7 The second embodiment of the present invention is a parallel technical solution of the first embodiment, and is different from the first embodiment in that the fixed arm 442 is arranged close to the short side of the voice coil 22.

[0067] The above description is merely 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 description 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 unit, characterized in that: include basin rack; A vibration assembly, the vibration assembly comprising a diaphragm assembly and a voice coil, the diaphragm assembly connecting the basin frame and the voice coil; A magnetic circuit assembly connected to the basin frame, comprising a yoke and a central magnetic structure provided on the yoke, wherein the central magnetic structure is in the shape of a ring frame, the yoke is provided with a boss protruding into the hollow area of ​​the central magnetic structure, and the yoke is further provided with two through-holes, wherein the boss is located between the two through-holes; A shaping support piece, wherein the shaping support piece includes an extension portion, a central portion, a cantilever portion and an external fixing portion connected in sequence, the central portion is fixedly mounted on the boss, the cantilever portions are respectively connected to both sides of the central portion, the external fixing portion includes a rising arm and a fixed arm, the rising arm connects the fixed arm and the cantilever portion, the fixed arm is fixedly mounted on the diaphragm assembly, the two ends of the central portion are respectively connected to the extension portion, the extension portion includes a descending arm and a mounting arm, the descending arm passes through the through hole, the descending arm connects the central portion and the mounting arm, and the mounting arm is fixed on the yoke.

2. The sound unit according to claim 1, characterized in that The fixed arm is arranged close to the long side of the voice coil, or the fixed arm is arranged close to the short side of the voice coil.

3. The sound unit according to claim 2, characterized in that The fixed arm is provided with an inner pad which is welded and connected to the lead of the voice coil, and the mounting arm is provided with an outer pad which is electrically connected to the inner pad.

4. The sound unit according to claim 3, characterized in that: A first avoidance groove for avoiding the lead wire of the voice coil is provided on the top of the central magnetic structure.

5. The sound unit according to claim 1, characterized in that: A second avoidance groove for avoiding the fixed arm is provided on the top of the central magnetic structure.

6. The sound unit according to claim 1, characterized in that The external fixing portion is in an inverted L shape.

7. The sound unit according to claim 1, characterized in that The extension portion is L-shaped.

8. The sound unit according to claim 7, characterized in that: The two mounting arms are arranged close to each other.

9. The sound unit according to claim 1, characterized in that: The boss and the yoke are an integral structure formed by integral processing.

10. The sound unit according to claim 9, characterized in that: The boss is a convex bump formed by stamping.

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