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 notch; 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 fixed on the side washer, the elevating part is located on the outer side of the side magnetic steel, and the outer bonding pad is located on the outer side of the side magnetic steel. And the outer bonding pad is fixed on the bottom surface of the side magnetic steel and is positioned in the notch. The sounding unit is novel in structure, the outer bonding pad of the shaping support chip is located on the bottom surface of the edge magnetic steel, 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 light and thin and the performance have put forward higher requirements, sounding unit as an important component unit of such products, in its performance, size etc. also put forward higher and higher requirements.

[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 yoke, which leads to the yoke needing to reserve the position specially for installing the outer pad, which undoubtedly leads to the volume of yoke becoming larger, and in the sounding unit, the volume of yoke increases, the space for setting up the magnetic circuit assembly becomes smaller, which obviously leads to the performance of sounding unit declining. 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] Yoke;

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

[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, the outer pad is fixed on the bottom surface of the side magnetic steel and is located in the gap.

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

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

[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, the bottom end of the extended edge has a notch corresponding to the notch.

[0015] Furthermore, the top surface of the notch is higher than or flush with the contact conductive surface of the external pad.

[0016] Furthermore, the thickness of the yoke is greater than or equal to the thickness of the outer pad.

[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 side magnetic steel, 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 part of the sound unit of the first embodiment of the present invention.

[0021] Description of labels:

[0022] 1. Basin frame; 11. Extension edge; 111. Air vent; 112. Notch; 13. Positioning column;

[0023] 2. Magnetic circuit assembly; 21. Yoke; 211. Notch; 22. Center magnet; 23. Side magnet; 231. Avoidance groove; 24. Side washer;

[0024] 3. Vibration assembly; 31. Voice coil;

[0025] 4. Shaped support piece; 41. Cantilever portion; 42. External mounting portion; 421. Fixed portion; 422. Elevated portion; 423. External solder pad. DETAILED DESCRIPTION

[0026] 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.

[0027] Please refer to Figure 1 as well as Figure 2 , sound unit, including:

[0028] Basin rack 1;

[0029] 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 notch 211.

[0030] The shaping support piece 4 includes an inner mounting portion, a cantilever portion 41 and an outer mounting portion 42 connected in sequence from the inside to the outside. The outer mounting portion 42 includes a fixed portion 421, an elevated portion 422 and an outer welding pad 423 connected in sequence. The fixed portion 421 is connected to the cantilever portion 41 and is fixed on the edge washer 24. The elevated portion 422 is located on the outside of the edge magnetic steel 23. The outer welding pad 423 is fixed on the bottom surface of the edge magnetic steel 23 and is located in the notch 211.

[0031] 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 welding pad 423 of the shaped support plate 4 is located on the bottom surface of the side magnetic steel 23, and there is no need to reserve an installation area for fixing the outer welding pad 423 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.

[0032] Furthermore, the elevated portion 422 is fixedly connected to the outer wall of the edge magnetic steel 23 .

[0033] 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.

[0034] Furthermore, the basin frame 1 has an extending edge 11 extending downward, and the raised portion 422 is fixedly connected to the inner wall of the extending edge 11 .

[0035] As can be seen from the above description, the extended edge 11 of the basin frame 1 can provide a fixed position for the elevated portion 422 of the shaped support piece 4, which is beneficial to improving the structural stability of the sound unit.

[0036] Furthermore, an air leakage hole 111 is provided on the extension edge 11 .

[0037] From the above description, the air vent 111 can effectively balance the air pressure inside and outside the sound unit, which is conducive to improving the acoustic performance of the sound unit.

[0038] Further, the extension edge 11 is further provided with a gas permeable isolation member covering the air vent 111.

[0039] From the above description, the gas permeable isolation member 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.

[0040] Further, the yoke 1 further has a positioning column 13, both ends of the extension edge 11 are connected with the positioning column 13, and the extension edge 11 and the two positioning columns 13 connected therewith form a concave structure, and the fixing part 421 is located in the concave structure.

[0041] From the above description, the positioning column 13 can facilitate the positioning and installation of the yoke 21 and the yoke 1, and the concave structure can effectively protect the shaping support 4 from being scratched or damaged by foreign matter.

[0042] Further, the bottom end of the extension edge 11 has a notch 112 corresponding to the gap 211.

[0043] Further, the top surface of the notch 112 is higher than or flush with the contact and conduction surface of the outer pad 423.

[0044] From the above description, the notch 112 can avoid interference of the extension edge 11 with the external FPC, and affect the welding and conduction of the external FPC and the outer pad 423.

[0045] Further, the thickness of the yoke 21 is greater than or equal to the thickness of the outer pad 423.

[0046] From the above description, the outer pad 423 will not protrude from the bottom surface of the yoke 21, which is conducive to reducing the risk of damage to the outer pad 423.

[0047] Further, the edge magnetic steel 23 is provided with an avoidance slot 231 for avoiding the cantilever part 41.

[0048] From the above description, 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.

[0049] Please refer to Figure 1 and Figure 2The utility model discloses an embodiment one is: sounding unit, including basin frame 1, magnetic circuit component 2, vibration component 3 and shaping support piece 4, vibration component 3 and magnetic circuit component 2 are connected respectively basin frame 1, vibration component 3 includes diaphragm component and voice coil 31, diaphragm component connects basin frame 1 with voice coil 31, magnetic circuit component 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 region 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, the magnetic gap that center magnetic steel 22 with edge magnetic steel 23 forms for the activity of voice coil 31, edge hua si 24 connects basin frame 1, optionally, edge hua si 24 with basin frame 1 are the integral structure of insert injection molding,

[0050] Yoke 21 has the aperture 211, shaping support piece 4 includes by inside outward sequentially connected inner mounting portion, cantilever portion 41 and outer mounting portion 42, inner fixed portion 421 connects voice coil 31, outer mounting portion 42 includes sequentially connected fixed portion 421, frame height portion 422 and outer solder pad 423, fixed portion 421 connects cantilever portion 41 and is fixed on edge hua si 24, frame height portion 422 is located on the outside of edge magnetic steel 23, and outer solder pad 423 is fixed on the bottom surface of edge magnetic steel 23 and is located in aperture 211.

[0051] Edge magnetic steel 23 is equipped with the avoidance groove 231 for avoiding cantilever portion 41, specifically, in this embodiment, the both ends of fixed portion 421 in shaping support piece 4 are connected with cantilever portion 41 respectively, each cantilever portion 41 is connected with inner fixed portion 421 respectively, each inner fixed portion 421 is connected with the corner portion of voice coil 31, frame height portion 422 connects the middle region of fixed portion 421, since edge magnetic steel 23 needs to avoid two cantilever portion 41, therefore, in this embodiment, edge magnetic steel 23 is in convex type.

[0052] Basin frame 1 includes the body of ring frame shape, diaphragm component and edge hua si 24 are connected with the body, basin frame 1 has the extension edge 11 extending towards down, extension edge 11 connects the body, in this embodiment, frame height portion 422 and the inner wall of extension edge 11 are fixedly connected.In other embodiments, frame height portion 422 and the outer wall of edge magnetic steel 23 are also acceptable fixedly connected.

[0053] Optionally, extension edge 11 is equipped with the air hole 111.

[0054] The extension edge 11 is further provided with a gas permeable separator covering the air vent 111, which can be a mesh cloth or the like.

[0055] As a preferred embodiment, the yoke 1 is further provided with positioning posts 13 connected to the body, the yoke 21 is provided with positioning grooves matched with the positioning posts 13, and the extension edge 11 is connected with the positioning posts 13 at both ends, the extension edge 11 and the two positioning posts 13 form a concave structure, and the fixing part 421 is located in the concave structure.

[0056] Optionally, the bottom end of the extension edge 11 is provided with a notch 112 corresponding to the gap 211, the top surface of the notch 112 is higher than or flush with the contact and conduction surface of the outer pad 423, and the contact and conduction surface of the outer pad 423 refers to the surface of the outer pad 423 used for contacting and conducting with external FPC, elastic sheet and the like.

[0057] In order to avoid the contact and conduction surface of the outer pad 423 protruding relative to the bottom surface of the yoke 21, the thickness of the yoke 21 is greater than or equal to the thickness of the outer pad 423.

[0058] In summary, the sound unit structure provided by the utility model is novel, the outer pad of the shaping support is located at the bottom surface of the edge magnetic steel, the mounting area of the outer pad is not required to be left in the yoke, the occupied space of the yoke is reduced, the sound unit has more space to set the magnetic circuit assembly, the magnetic field strength of the sound unit is increased, and the performance of the sound unit is improved. The frame height part of the shaping support can be effectively fixed, and the structural stability of the sound unit is improved.

[0059] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation or direct or indirect application in the related technical field based on the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A sound unit, characterized in that: 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 notch; 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 welding 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 the outer welding pad is fixed on the bottom surface of the edge magnetic steel and is located in the notch.

2. The sound unit according to claim 1, characterized in that The elevated portion is fixedly connected to the outer wall of the edge magnetic steel.

3. The sound unit according to 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 unit according to claim 3, characterized in that: The extended edge is provided with an air leakage hole.

5. The sound unit according to claim 4, characterized in that: A breathable isolation piece covering the air leakage hole is also provided on the extension edge.

6. The sound unit according to claim 3, characterized in that: 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 unit according to claim 3, characterized in that: The bottom end of the extension edge has a notch corresponding to the notch.

8. The sound unit according to claim 7, characterized in that: The top surface of the notch is higher than or flush with the contact and conductive surface of the outer pad.

9. The sound unit according to claim 1, characterized in that: The thickness of the yoke is greater than or equal to the thickness of the outer pad.

10. The sound unit according to claim 1, characterized in that: The edge magnetic steel is provided with an avoidance groove for avoiding the cantilever part.

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