Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin frame, a magnetic circuit assembly and a shaping support chip, the magnetic circuit assembly comprises a yoke, side magnetic steel and a side washer, the side magnetic steel is connected with the yoke and the side washer, the side washer is connected with the basin frame, and the yoke is provided with a via hole; the shaping support chip comprises an inner mounting part, a cantilever part and an outer mounting part which are sequentially connected from inside to outside, the outer mounting part comprises a fixing part, an elevating part and an outer bonding pad which are sequentially connected, the fixing part is connected with the cantilever part and is fixed on the side washer, the elevating part is located at the outer side of the side magnetic steel and penetrates through the via hole, and the outer bonding pad is connected with the cantilever part. And the outer bonding pad is fixed on the bottom surface of the yoke. The sounding unit is novel in structure, the outer bonding pad of the shaping support chip is located on the bottom surface of the yoke, a mounting area for fixing the outer bonding pad does not need to be reserved on the basin stand, the occupied space of the basin stand is reduced, the sounding unit has more space for arranging the magnetic circuit assembly, the magnetic field intensity of the sounding unit is increased, and the performance of the sounding unit is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroacoustic transducer technical field especially relates to sounding unit. BACKGROUND

[0002] Sounding unit as the common electroacoustic transducer that electric energy is changed into sound energy, it plays an indispensable role in the sound system. With the mobile phone, tablet computer and other consumer electronics products, especially AR / VR and other large wearable electronic equipment, the appearance lightens and thins and the performance proposes higher request, sounding unit as an important component unit of such product, in its performance, size etc. also proposed higher and higher request.

[0003] In order to pursue the high performance of sounding unit, the fixed branch is usually used as the conducting part of sounding unit, but the fixed branch will occupy the larger space inside sounding unit, especially, in the prior art, the outer pad of fixed branch is generally arranged on the basket, which leads to the basket needing to reserve the position specially for installing the outer pad, which undoubtedly leads to the increase of the volume of the basket, and in the sounding unit, the increase of the volume of the basket makes the space for setting the magnetic circuit assembly smaller, which obviously leads to the performance decline of the sounding unit. SUMMARY

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

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme that sounding unit includes:

[0006] Basket;

[0007] Magnetic circuit assembly, the magnetic circuit assembly includes yoke, side magnetic steel and side halsall, the side magnetic steel is connected the yoke with the side halsall, the side halsall is connected the basket, the yoke has via hole;

[0008] Fixed branch, the fixed branch includes the inner mounting portion, cantilever portion and outer mounting portion sequentially connected from inside to outside, the outer mounting portion includes the fixed portion, the heightening portion and the outer pad sequentially connected, the fixed portion is connected the cantilever portion and is fixed on the side halsall, the heightening portion is located the outside of the side magnetic steel and penetrates the via hole, the outer pad is fixed on the bottom surface of the yoke.

[0009] Further, the heightening portion is fixedly connected with the outer wall of the side magnetic steel.

[0010] Further, the basket has the extension edge extending downward, and the heightening portion is fixedly connected with the inner wall of the extension edge.

[0011] Further, the extension edge is provided with the air release hole.

[0012] Furthermore, a breathable isolation piece covering the air leakage hole is provided on the extension edge.

[0013] Furthermore, the basin stand also has a positioning column, and the two ends of the extended edge are respectively connected to the positioning columns. The extended edge and the two positioning columns connected thereto form a concave structure, and the fixing portion is located in the concave structure.

[0014] Furthermore, a slot is provided on the bottom surface of the yoke, and the outer welding pad is fixed in the slot.

[0015] Furthermore, the depth of the groove is greater than or equal to the thickness of the outer pad.

[0016] Furthermore, the via hole is a through hole structure or a notch structure.

[0017] Furthermore, the edge magnetic steel is provided with an avoidance groove for avoiding the cantilever portion.

[0018] The beneficial effects of the present invention are as follows: the sound unit has a novel structure, the outer welding pad of the shaped support is located on the bottom surface of the yoke iron, and there is no need to reserve an installation area for the fixed outer welding pad on the basin frame, which is conducive to reducing the space occupied by the basin frame, so that the sound unit has more space to set up the magnetic circuit component, thereby increasing the magnetic field strength of the sound unit and improving the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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;

[0020] Figure 2 This is a structural diagram of a portion of the sound-emitting unit according to the first embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the overall structure of the sound-emitting unit of the second embodiment of the present utility model;

[0022] Figure 4 This is a structural diagram of part of the structure of the sound-emitting unit of the second embodiment of the present invention.

[0023] Description of labels:

[0024] 1. Basin frame; 11. Extension edge; 12. Air vent; 13. Positioning column;

[0025] 2. Magnetic circuit assembly; 21. Yoke; 211. Through hole; 212. Slot; 22. Center magnet; 23. Side magnet; 231. Avoidance slot; 24. Side washer;

[0026] 3. Vibration assembly; 31. Voice coil;

[0027] 4. Shaped support; 41. Inner mounting portion; 42. Cantilever portion; 43. Outer mounting portion; 431. Fixing portion; 432. Elevated portion; 433. Outer pad. DETAILED DESCRIPTION

[0028] 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.

[0029] Please refer to Figures 1 to 4 , sound unit, including:

[0030] Basin rack 1;

[0031] The magnetic circuit assembly 2 includes a yoke 21, a side magnetic steel 23, and a side washer 24. The side magnetic steel 23 connects the yoke 21 and the side washer 24. The side washer 24 is connected to the basin frame 1. The yoke 21 has a through hole 211.

[0032] The shaping support piece 4 includes an inner mounting portion 41, a cantilever portion 42 and an outer mounting portion 43 connected in sequence from the inside to the outside. The outer mounting portion 43 includes a fixed portion 431, an elevated portion 432 and an outer solder pad 433 connected in sequence. The fixed portion 431 is connected to the cantilever portion 42 and is fixed to the edge washer 24. The elevated portion 432 is located on the outside of the edge magnetic steel 23 and passes through the through hole 211. The outer solder pad 433 is fixed to the bottom surface of the yoke 21.

[0033] From the above description, it can be seen that the beneficial effects of the present invention are: the sound unit has a novel structure, the outer solder pad 433 of the shaped support plate 4 is located on the bottom surface of the yoke 21, and there is no need to reserve an installation area for fixing the outer solder pad 433 on the basin frame 1, which is conducive to reducing the space occupied by the basin frame 1, so that the sound unit has more space to set up the magnetic circuit component 2, thereby increasing the magnetic field strength of the sound unit and improving the performance of the sound unit.

[0034] Furthermore, the elevated portion 432 is fixedly connected to the outer wall of the edge magnetic steel 23 .

[0035] As can be seen from the above description, the large connection area between the shaped support 4 and the magnetic circuit assembly 2 makes the installation of the shaped support 4 more secure, which is beneficial to improving the structural stability of the sound unit and enhancing the drop reliability margin of the sound unit.

[0036] Furthermore, the basin frame 1 has an extending edge 11 extending downward, and the raised portion 432 is fixedly connected to the inner wall of the extending edge 11 .

[0037] As can be seen from the above description, the extended edge 11 of the basin frame 1 can provide a fixed position for the raised portion 432 of the shaped support piece 4, which is beneficial to improving the structural stability of the sound unit.

[0038] Further, the extension edge 11 is provided with an air hole 12.

[0039] As described above, the air hole 12 can effectively balance the air pressure inside and outside the sound unit, which is conducive to improving the acoustic performance of the sound unit.

[0040] Further, the extension edge 11 is further provided with a gas permeable isolation piece covering the air hole 12.

[0041] As described above, the gas permeable isolation piece is used to prevent foreign matter outside the sound unit from entering the inside of the sound unit and affecting the sound of the sound unit, which includes but is not limited to sound absorbing particles and the like.

[0042] Further, the basin frame 1 further has a positioning column 13, both ends of the extension edge 11 are connected with the positioning column 13, the extension edge 11 and the two positioning columns 13 connected therewith form a concave structure, and the fixing part 431 is located in the concave structure.

[0043] As described above, the positioning column 13 can facilitate the positioning and installation of the yoke 21 and the basin frame 1, and the concave structure can effectively protect the shaping support 4 from being scratched or damaged by foreign matter.

[0044] Further, the bottom surface of the yoke 21 is provided with a slot 212, and the outer pad 433 is fixed in the slot 212.

[0045] As described above, the slot 212 can facilitate the installation of the outer pad 433.

[0046] Further, the depth of the slot 212 is greater than or equal to the thickness of the outer pad 433.

[0047] As described above, the depth of the slot 212 is sufficient to prevent the conductive surface of the outer pad 433 from protruding from the bottom surface of the yoke 21, which is conducive to reducing the risk of damage to the outer pad 433.

[0048] Further, the via hole 211 is a through hole structure or a notch structure.

[0049] As described above, the specific type of via hole 211 can be selected as needed.

[0050] Further, the edge magnetic steel 23 is provided with an avoidance slot 231 for avoiding the cantilever part 42.

[0051] As described above, the edge magnetic steel 23 will not interfere with the shaping support 4, which is conducive to ensuring the working stability of the sound unit.

[0052] Please refer toFigure 1 and Figure 2 The embodiment one of the utility model discloses: sound unit, including basin frame 1, magnetic circuit assembly 2, vibration assembly 3 and shaping support piece 4, vibration assembly 3 and magnetic circuit assembly 2 are connected respectively basin frame 1, vibration assembly 3 includes diaphragm assembly and voice coil 31, and diaphragm assembly connects basin frame 1 with voice coil 31, magnetic circuit assembly 2 includes yoke 21, center magnetic steel 22, center hua si, edge magnetic steel 23 and edge hua si 24, center magnetic steel 22 is located on yoke 21 and is set correspondingly to the hollow area of voice coil 31, center hua si is located on center magnetic steel 22, edge magnetic steel 23 connects yoke 21 with edge hua si 24, and the magnetic gap for the activity of voice coil 31 is formed between center magnetic steel 22 and edge magnetic steel 23, and edge hua si 24 connects basin frame 1, optionally, edge hua si 24 and basin frame 1 are the integral structure of insert injection molding,

[0053] Yoke 21 has via 211, shaping support piece 4 includes by inside and outside sequentially connected inner mounting portion 41, cantilever portion 42 and outer mounting portion 43, and inner fixed portion 431 connects voice coil 31, and outer mounting portion 43 includes sequentially connected fixed portion 431, heightening portion 432 and outer solder pad 433, fixed portion 431 connects cantilever portion 42 and is fixed on edge hua si 24, heightening portion 432 is located on the outside of edge magnetic steel 23 and penetrates via 211, and outer solder pad 433 is fixed on the bottom surface of yoke 21, and in the embodiment, via 211 is through-hole structure, and in other embodiments, via 211 can also be a notch structure.

[0054] To improve the structural stability of sound unit, in the embodiment, heightening portion 432 and the outer wall of edge magnetic steel 23 are fixedly connected.

[0055] The bottom surface of yoke 21 is provided with slot 212, and outer solder pad 433 is fixed in slot 212. Preferably, the depth of slot 212 is greater than or equal to the thickness of outer solder pad 433. In specific products, the depth of slot 212 is slightly less than the thickness of outer solder pad 433, which is also acceptable. Slot 212 can be pressed into shape, milled into shape or shaped by other means.

[0056] The side magnetic steel 23 is provided with an avoiding groove 231 for avoiding the cantilever part 42, specifically, in the embodiment, the two ends of the fixed part 431 in the shaped supporting sheet 4 are respectively connected with the cantilever part 42, each of the cantilever part 42 is respectively connected with the inner fixed part 431, each of the inner fixed part 431 is connected with the corner of the voice coil 31, the height increasing part 432 is connected with the middle area of the fixed part 431, since the side magnetic steel 23 needs to avoid two cantilever parts 42, therefore, in the embodiment, the side magnetic steel 23 is in the shape of a convex character.

[0057] The basin frame 1 comprises a body in the shape of a ring frame, the diaphragm assembly and the side magnetic steel 24 are connected with the body, the basin frame 1 has an extending edge 11 extending downward, the extending edge 11 is connected with the body.

[0058] Optionally, the extending edge 11 is provided with a gas leakage hole 12.

[0059] The extending edge 11 is further provided with a gas permeable isolation piece covering the gas leakage hole 12, the gas permeable isolation piece can be a gauze or the like.

[0060] As a preferred embodiment, the basin frame 1 further has a positioning column 13, the positioning column 13 is connected with the body, the yoke 21 has a positioning groove matched with the positioning column 13, the two ends of the extending edge 11 are respectively connected with the positioning column 13, the extending edge 11 and the two positioning columns 13 connected therewith form a concave character structure, and the fixed part 431 is located in the concave character structure.

[0061] Please refer to Figure 3 and Figure 4 The second embodiment of the utility model is the parallel technical scheme of the first embodiment, which is different from the first embodiment in that the height increasing part 432 of the shaped supporting sheet 4 is fixedly connected with the inner wall of the extending edge 11 of the basin frame 1.

[0062] In the embodiment, the via hole 211 is in the structure of a slit, which facilitates the processing and manufacturing of the yoke 21 and the assembly of the sound production unit.

[0063] In summary, the sound production unit structure provided by the utility model is novel, the outer pad of the shaped supporting sheet is located at the bottom surface of the yoke, the mounting area for fixing the outer pad does not need to be left on the basin frame, which is beneficial to reducing the occupied space of the basin frame, so that the sound production unit has more space to set the magnetic circuit assembly, thereby increasing the magnetic field strength of the sound production unit and improving the performance of the sound production unit. The height increasing part of the shaped supporting sheet can be effectively fixed, which is beneficial to improving the structural stability of the sound production unit.

[0064] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent transformation or direct or indirect application in the related technical field based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A sound emitting unit, characterized by, include basin rack; A magnetic circuit assembly, the magnetic circuit assembly comprising a yoke, side magnetic steel and a side washer, the side magnetic steel connecting the yoke and the side washer, the side washer connected to the basin frame, and the yoke having a through hole; The shaping support piece includes an inner mounting portion, a cantilever portion and an outer mounting portion connected in sequence from the inside to the outside, the outer mounting portion includes a fixed portion, an elevated portion and an outer solder pad connected in sequence, the fixed portion is connected to the cantilever portion and is fixed on the edge washer, the elevated portion is located on the outside of the edge magnetic steel and passes through the through hole, and the outer solder pad is fixed on the bottom surface of the yoke.

2. The sound producing unit of claim 1, wherein, The elevated portion is fixedly connected to the outer wall of the edge magnetic steel.

3. The sound producing unit of claim 1, wherein, The basin frame has an extending edge extending downward, and the raised portion is fixedly connected to the inner wall of the extending edge.

4. The sound producing unit of claim 3, wherein, The extended edge is provided with an air leakage hole.

5. The sound producing unit of claim 4, wherein, A breathable isolation piece covering the air leakage hole is also provided on the extension edge.

6. The sound producing unit of claim 3, wherein, The basin frame further has a positioning column, and both ends of the extended edge are respectively connected to the positioning columns. The extended edge and the two positioning columns connected thereto form a concave structure, and the fixing portion is located in the concave structure.

7. The sound producing unit of claim 1, wherein, A slot is provided on the bottom surface of the yoke, and the outer welding pad is fixed in the slot.

8. The sound producing unit of claim 7, wherein, The depth of the groove is greater than or equal to the thickness of the outer pad.

9. The sound producing unit of claim 1, wherein, The via hole is a through hole structure or a notch structure.

10. The sound producing unit of claim 1, wherein, The edge magnetic steel is provided with an avoidance groove for avoiding the cantilever part.

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