Sound production unit

Abstract

The utility model discloses a sounding 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; the magnetic circuit assembly is connected with the basin frame and comprises a yoke and central magnetic steel arranged on the yoke, a first through hole is formed in the yoke, an avoiding hole and a second through hole are formed in the central magnetic steel, and the second through hole is communicated with the first through hole; the shaping support chip comprises an extension part, a center part, a cantilever part and an outer fixing part which are connected in sequence, the center part is fixedly installed on the center magnetic steel and located between the two receding holes, the center part is connected with the cantilever part, the cantilever part corresponds to the receding holes, the outer fixing part comprises a rising arm and a fixing arm, the rising arm is connected with the fixing arm and the cantilever part, and the fixing arm is connected with the cantilever part. The fixed arm is fixedly installed on the vibrating diaphragm assembly, two ends of the central part are respectively connected with an extension part, the extension part comprises a descending arm and an installation arm, the descending arm penetrates through the through hole and is connected with the central part and the installation arm, and the installation arm is fixed on the yoke. The sound production unit is compact in structure and good in acoustic performance.

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 a large internal space of the sound unit (such as the Chinese utility model patent application number 202221548086.8), which has a great impact on the magnetic circuit components. As a result, 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 steel disposed on the yoke, wherein the yoke is provided with a first through-hole, and the central magnetic steel is provided with two avoidance holes and two second through-holes, wherein the second through-holes are connected to the first through-holes to form a through-hole;

[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 central magnetic steel and is located between the two avoidance holes, the two sides of the central portion are respectively connected to the cantilever portions, the cantilever portions correspond to the avoidance holes, 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, the external fixing portion is in an inverted L-shape.

[0013] Furthermore, the extension portion is L-shaped.

[0014] Furthermore, the two mounting arms are arranged close to each other.

[0015] Furthermore, the avoidance hole is rectangular.

[0016] Furthermore, the avoidance hole is a blind hole or a through hole.

[0017] Furthermore, the diaphragm assembly includes a sound membrane, a frame and a dome, the sound membrane is arranged around the frame and fixedly connected to the frame, the frame is connected to the voice coil, a window is provided in the center of the frame, the dome is provided on the frame and closes the window, the edge of the window has a support arm that bends and extends toward the direction close to the yoke, and the support arm is connected to one end of the cantilever part away from the center part and / or the rising arm.

[0018] Furthermore, when the sound-emitting unit is viewed from a top-down perspective, the entire area of ​​the cantilever portion is located within the avoidance hole.

[0019] The beneficial effects of the present invention are as follows: the sound unit has a compact and novel structure, the center part of the shaped support is fixed on the central magnet and the central magnet has an avoidance hole for avoiding the cantilever part, so that the shaped support can be set on the inner side of the voice coil, 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 of the sound unit can be set larger, thereby improving the BL value of the sound unit and enhancing the performance of the sound unit; the middle area of ​​the central magnet adopts an incompletely hollowed-out structure, which not only provides an installation position for the shaped support, but also allows the central magnet to maintain a larger total volume, so that the sound unit has a larger magnetic steel strength, further improving the acoustic performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the overall structure of the sound-emitting unit according to the first embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of the sound unit of the first embodiment of the present invention. Figure 1 ;

[0022] Figure 3 This is a structural diagram of a portion of the sound-emitting unit according to the first embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the sound unit of the first embodiment of the present invention. Figure 2 ;

[0024] Figure 5 Schematic diagram of the structure of the central magnet in the sound unit of the first embodiment of the present invention.

[0025] Description of labels:

[0026] 1. Basin rack;

[0027] 2. Diaphragm assembly; 21. Sound membrane; 22. Skeleton; 221. Support arm; 23. Dome;

[0028] 3. Voice coil;

[0029] 4. Magnetic circuit assembly; 41. Yoke; 411. First through-hole; 412. Mounting slot; 42. Center magnet; 421. Avoidance hole; 422. Second through-hole; 43. Side magnet structure;

[0030] 5. Shaped support piece; 51. Extension part; 511. Descending arm; 512. Mounting arm; 52. Center part; 53. Cantilever part; 54. External fixing part; 541. Rising arm; 542. Fixed arm. DETAILED DESCRIPTION

[0031] 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.

[0032] Please refer to Figures 1 to 5 , sound unit, including:

[0033] Basin rack 1;

[0034] A vibration assembly, comprising a diaphragm assembly 2 and a voice coil 3, wherein the diaphragm assembly 2 is connected to the basin frame 1 and the voice coil 3;

[0035] A magnetic circuit assembly 4 is connected to the basin frame 1 and includes a yoke 41 and a central magnetic steel 42 provided on the yoke 41. The yoke 41 is provided with a first through-hole 411. The central magnetic steel 42 is provided with two avoidance holes 421 and two second through-holes 422. The second through-holes 422 are connected to the first through-holes 411 to form a through-hole.

[0036] The shaping support piece 5 includes an outer extension portion 51, a central portion 52, a cantilever portion 53 and an outer fixing portion 54 connected in sequence. The central portion 52 is fixedly mounted on the central magnetic steel 42 and is located between the two avoidance holes 421. The cantilever portions 53 are connected to both sides of the central portion 52, and the cantilever portions 53 correspond to the avoidance holes 421. The outer fixing portion 54 includes a rising arm 541 and a fixed arm 542. The rising arm 541 connects the fixed arm 542 and the cantilever portion 53. The fixed arm 542 is fixedly mounted on the diaphragm assembly 2. The two ends of the central portion 52 are respectively connected to the outer extension portion 51. The outer extension portion 51 includes a descending arm 511 and a mounting arm 512. The descending arm 511 passes through the through hole, connects the central portion 52 and the mounting arm 512, and the mounting arm 512 is fixed to the yoke 41.

[0037] As can be seen from the above description, the beneficial effects of the present invention are: the sound unit has a compact and novel structure, the central portion 52 of the shaped support 5 is fixed on the central magnetic steel 42, and the central magnetic steel 42 has an avoidance hole 421 for avoiding the cantilever portion 53, so that the shaped support 5 can be arranged on the inner side of the voice coil 3, so that the corner area of ​​the sound unit does not need to be provided with a avoidance structure for avoiding the shaped support 5, so that the total volume of the side magnetic structure 43 of the sound unit can be set larger, thereby improving the BL value of the sound unit and enhancing the performance of the sound unit; the middle area of ​​the central magnetic steel 42 adopts an incompletely hollowed-out structure, which not only provides a mounting position for the shaped support 5, but also allows the central magnetic steel 42 to maintain a larger total volume, so that the sound unit has a larger magnetic steel strength, further improving the acoustic performance of the sound unit.

[0038] Furthermore, the fixed arm 542 is disposed close to the long side of the voice coil 3 , or the fixed arm 542 is disposed close to the short side of the voice coil 3 .

[0039] As can be seen from the above description, the specific position of the fixed arm 542 can be set as needed.

[0040] Furthermore, the fixed arm 542 is provided with an inner pad which is welded and conductive to the lead of the voice coil 3 , and the mounting arm 512 is provided with an outer pad which is electrically connected to the inner pad.

[0041] As can be seen from the above description, the external power supply can utilize the support plate 5 to supply power to the voice coil 3 .

[0042] Furthermore, the outer fixing portion 54 is in an inverted L-shape.

[0043] Furthermore, the extension portion 51 is L-shaped.

[0044] As can be seen from the above description, the outer fixing portion 54 and the outer extension portion 51 have a simple structure and are easy to form.

[0045] Furthermore, the two mounting arms 512 are arranged close to each other.

[0046] As can be seen from the above description, the two mounting arms 512 are arranged close to each other, which can facilitate the design of the conductive wiring inside the shaped support piece 5.

[0047] Furthermore, the avoidance hole 421 is rectangular.

[0048] Furthermore, the avoidance hole 421 is a blind hole or a through hole.

[0049] It can be seen from the above description that the specific structure of the avoidance hole 421 can be set as needed.

[0050] Furthermore, the diaphragm assembly 2 includes a sound membrane 21, a skeleton 22 and a dome 23. The sound membrane 21 is arranged around the skeleton 22 and fixedly connected to the skeleton 22. The skeleton 22 is connected to the voice coil 3. A window is provided in the center of the skeleton 22. The dome 23 is provided on the skeleton 22 and closes the window. The edge of the window has a support arm 221 that bends and extends toward the yoke 41. The support arm 221 is connected to the end of the cantilever portion 53 away from the center portion 52 and / or the rising arm 541.

[0051] It can be seen from the above description that the provision of the support arm 221 allows the shaped support plate 5 to better support the vibration component.

[0052] Furthermore, when the sound unit is viewed from a top perspective, the entire area of ​​the cantilever portion 53 is located within the avoidance hole 421 .

[0053] It can be seen from the above description that when the sound unit is working, the cantilever portion 53 will not collide with the central magnet 42, which is conducive to ensuring the working stability of the sound unit.

[0054] Example 1

[0055] Please refer to Figures 1 to 5 The first embodiment of the present invention is as follows: a sound unit includes a basket 1, a vibration assembly, a magnetic circuit assembly 4, and a fixed support 5. The vibration assembly includes a diaphragm assembly 2 and a voice coil 3. The diaphragm assembly 2 connects the basket 1 and the voice coil 3. In this embodiment, the diaphragm assembly 2 includes a sound membrane 21, a skeleton 22, and a dome 23. The sound membrane 21 is arranged around the skeleton 22 and fixedly connected to the skeleton 22. The skeleton 22 is connected to the voice coil 3. A window is provided in the center of the skeleton 22. The dome 23 is provided on the skeleton 22 and closes the window.

[0056] The magnetic circuit component 4 is connected to the basin frame 1, and the magnetic circuit component 4 includes a yoke 41 and a central magnetic steel 42 and a side magnetic structure 43 respectively arranged on the yoke 41. The side magnetic structure 43 is arranged around the central magnetic steel 42, and a magnetic gap is formed between the side magnetic structure 43 and the central magnetic steel 42 for the movement of the voice coil 3. Preferably, the side magnetic structure 43 is a continuous and complete ring frame structure, and the side magnetic structure 43 includes a side magnetic steel and a side washer. The side magnetic steel connects the yoke 41 and the side washer; a first through hole 411 is provided on the yoke 41, and the central magnetic steel Two avoidance holes 421 and two second through-holes 422 are provided on the central magnetic steel 42. The second through-holes 422 are connected to the first through-hole 411 to form a through-hole. Optionally, the avoidance hole 421 is rectangular. In this embodiment, the line between the center points of the two avoidance holes 421 is perpendicular to the line between the center points of the two second through-holes 422. There are two first through-holes 411, and the two first through-holes 411 correspond to the two second through-holes 422 in a one-to-one manner. In this embodiment, a center washer is further provided on the top of the central magnetic steel 42, and a avoidance window is provided in the middle of the center washer.

[0057] The shaping support piece 5 is an FPC soft board. The shaping support piece 5 includes an extension portion 51, a central portion 52, a cantilever portion 53 and an external fixing portion 54 connected in sequence. The central portion 52 is fixedly mounted on the central magnetic steel 42 and is located between the two avoidance holes 421. The cantilever portions 53 are connected to both sides of the central portion 52. The cantilever portions 53 correspond to the avoidance holes 421. The avoidance holes 421 provide space for the cantilever portions 53 to move. The external fixing portion 54 includes a rising Arm 541 and fixed arm 542, the rising arm 541 connects the fixed arm 542 and the cantilever part 53, the fixed arm 542 is fixedly installed on the diaphragm assembly 2, the two ends of the central part 52 are respectively connected to the extension part 51, the extension part 51 includes a descending arm 511 and a mounting arm 512, the descending arm 511 passes through the through hole, the descending arm 511 connects the central part 52 and the mounting arm 512, and the mounting arm 512 is fixed on the yoke 41.

[0058] In order to make the sound unit thinner and lighter, in this embodiment, the bottom surface of the yoke 41 is provided with a mounting groove 412 connected to the first through-hole 411, and the mounting arm 512 is located in the mounting groove 412. The mounting arm 512 in the mounting groove 412 can reduce the overall cross-sectional height of the sound unit, making the sound unit thinner and lighter. At the same time, the yoke 41 can play a role in protecting the mounting arm 512 to a certain extent.

[0059] The fixed arm 542 is provided with an inner pad which is welded to the lead of the voice coil 3 , and the mounting arm 512 is provided with an outer pad which is electrically connected to the inner pad. The outer pad is exposed to the sound unit.

[0060] In this embodiment, the fixed arm 542 is disposed close to the short side of the voice coil 3. Specifically, the shaping support 5 is a rotationally symmetrical structure. In other embodiments, the fixed arm 542 may also be disposed close to the long side of the voice coil 3.

[0061] Optionally, the outer fixing portion 54 is in an inverted L-shape; the extension portion 51 is in an L-shape, and preferably the two mounting arms 512 are arranged close to each other.

[0062] In this embodiment, the avoidance hole 421 is a through hole. In some embodiments, the avoidance hole 421 may also be a blind hole.

[0063] In order to allow the shaped support plate 5 to better support the vibration component, the edge of the window of the skeleton 22 has a support arm 221 that bends and extends toward the yoke 41, and the support arm 221 is connected to the end of the cantilever portion 53 away from the center portion 52 and / or the rising arm 541.

[0064] When the sound unit is viewed from a top perspective, the entire area of ​​the cantilever portion 53 is located within the avoidance hole 421 , thereby preventing the cantilever portion 53 from colliding with the central magnet 42 during deformation.

[0065] 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 steel disposed on the yoke, wherein the yoke is provided with a first through-hole, and the central magnetic steel is provided with two avoidance holes and two second through-holes, wherein the second through-holes are connected to the first through-holes to form a through-hole; 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 central magnetic steel and is located between the two avoidance holes, the two sides of the central portion are respectively connected to the cantilever portions, the cantilever portions correspond to the avoidance holes, 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 1, characterized in that The external fixing portion is in an inverted L shape.

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

6. The sound unit according to claim 5, characterized in that: The two mounting arms are arranged close to each other.

7. The sound unit according to claim 1, characterized in that The avoidance hole is rectangular.

8. The sound unit according to claim 1, characterized in that The avoidance hole is a blind hole or a through hole.

9. The sound unit according to claim 1, characterized in that: The diaphragm assembly includes a sound membrane, a frame and a dome. The sound membrane is arranged around the frame and fixedly connected to the frame. The frame is connected to the voice coil. A window is provided in the center of the frame. The dome is provided on the frame and closes the window. The edge of the window has a support arm that bends and extends toward the yoke. The support arm is connected to one end of the cantilever part away from the center part and / or the rising arm.

10. The sound unit according to claim 1, characterized in that: When the sound unit is viewed from a top-down perspective, the entire area of ​​the cantilever portion is located within the avoidance hole.

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