Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a vibration assembly, a basin stand, and a shaping support chip and a magnetic circuit assembly which are arranged on the basin stand, the vibration assembly comprises a voice coil, the magnetic circuit assembly comprises a central magnetic steel and two side magnetic steels, the central magnetic steel is located in an area surrounded by the voice coil, and the two side magnetic steels are located in an area surrounded by the voice coil. The voice coil is located in an area defined by the two pieces of side magnetic steel, and a first gap is formed between the two pieces of side magnetic steel; the shaping support chip is provided with a connecting arm, one part of the connecting arm is bonded with the voice coil, and the other part of the connecting arm extends outwards from the first gap so as to extend out of an area defined by the two pieces of edge magnetic steel. According to the utility model, the voice coil is arranged in the area encircled by the two pieces of side magnetic steel, only the first gap is arranged between the two pieces of side magnetic steel to avoid the connecting arm of the shaped support chip, and the avoiding space is small, so that the side magnetic steel can be of a structure encircling the voice coil, the whole voice coil is almost fully surrounded by a magnetic circuit, and the performance is improved.

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] With the continuous development of consumer electronic products such as mobile phones and tablets, as well as large wearable electronic devices such as AR / VR, these products have put forward higher standards in terms of lightweight appearance and performance optimization. Among them, the sound unit, as an important component of such products, plays a vital role in the sound amplifier system, so its performance optimization and size reduction become particularly important. However, in order to pursue high performance and large amplitude, the existing sound units usually have fixed support plates in the sound units. In order to avoid the fixed support plate structure, the side magnets in the sound unit cannot be made into a fully surrounded voice coil, resulting in a significant loss in voice coil performance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sound unit to solve the problem that the existing sound unit has a large loss in voice coil performance due to the need to avoid the fixed support plate structure and the side magnetic steel cannot be made into a surround voice coil structure.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sound unit, which includes: a vibration component, a basin frame, and a shaped support plate and a magnetic circuit component arranged on the basin frame, the vibration component includes a voice coil, the magnetic circuit component includes a central magnetic steel and two side magnetic steels, the central magnetic steel is located in the area surrounded by the voice coil, the voice coil is located in the area surrounded by the two side magnetic steels, and a first gap is provided between the two side magnetic steels; the shaped support plate is provided with a connecting arm, a part of the connecting arm is bonded to the voice coil, and the other part extends outward from the first gap to extend out of the area surrounded by the two side magnetic steels.

[0005] Furthermore, in the sound-emitting unit described in the present invention, the two side magnetic steels are symmetrically arranged with respect to each other, the shape of the side magnetic steels is U-shaped, and the openings of the two side magnetic steels are opposite to each other.

[0006] Furthermore, in the sound-emitting unit described in the utility model, the shaped support plate includes two brackets, the bracket is provided with a first soldering pad connected to the connecting arm, the voice coil is provided with a voice coil lead, and the voice coil lead is connected to the first soldering pad.

[0007] Furthermore, in the sound-emitting unit described in the utility model, the shaping support piece includes a bonding portion connected to the connecting arm, and the bonding portion is bonded to the top of the voice coil.

[0008] Furthermore, in the sound-emitting unit described in the present invention, the adhesive portion is provided with second pads on both first side edges extending along the first direction, and the second pads are located at the middle position of the first side edges.

[0009] Furthermore, in the sound-emitting unit described in the utility model, a third pad is provided on the bonding portion, and the third pad is provided at a corner of the bonding portion.

[0010] Furthermore, in the sound-emitting unit described in the utility model, the shaping support piece further includes an external connection portion connected to the connecting arm, and the external connection portion is connected to the basin frame.

[0011] Furthermore, in the sound-generating unit described in the utility model, the vibration component includes a diaphragm, and the diaphragm is arranged above the basin frame.

[0012] Furthermore, in the sound-emitting unit described in the utility model, the magnetic circuit assembly also includes a center washer, and the center washer is arranged on the upper surface of the center magnetic steel.

[0013] Furthermore, in the sound-emitting unit described in the utility model, a plurality of hollow portions are provided on the center washer, and the hollow portions are located on two side edges of the center washer extending along the first direction or at corners of the center washer.

[0014] The beneficial effect of the utility model is that the utility model sets the voice coil in the area surrounded by two side magnetic steels, and only sets a first gap between the two side magnetic steels to avoid the connecting arm of the fixed support plate, and the first gap is a narrow channel with a small avoidance space, so that the side magnetic steel can be a surround voice coil structure, and the entire voice coil is almost completely surrounded by the magnetic circuit, and the performance is improved. That is to say, in the utility model, the voice coil is completely surrounded by the side magnetic steels (that is, the voice coil is completely surrounded by the magnetic circuit) except for the narrow first gap between the two side magnetic steels, and the design of the voice coil being almost completely surrounded by the magnetic circuit can provide a uniform and strong magnetic field environment for the voice coil, and effectively suppress the interference of the external magnetic field on the sound unit, etc., so that the sound unit has higher clarity, accuracy and audio quality when outputting audio, thereby effectively improving the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the sound-emitting unit of the utility model in one embodiment at one viewing angle;

[0016] Figure 2 It is a structural schematic diagram of the sound-emitting unit of the utility model in another viewing angle under one implementation mode;

[0017] Figure 3 for Figure 1The schematic diagram of the structure of the sound unit shown after some components are hidden;

[0018] Figure 4 for Figure 4 The top view of the sound unit shown with some components hidden;

[0019] Figure 5 It is a structural explosion diagram of the sound-emitting unit of the utility model in another embodiment at another viewing angle;

[0020] Figure 6 It is a structural schematic diagram of the sound-emitting unit of the utility model after some components are hidden in another implementation manner;

[0021] Figure 7 for Figure 6 The top view of the sound unit shown with some components hidden;

[0022] Figure 8 This is a schematic structural diagram of the sound-emitting unit of the utility model after some components are hidden in another embodiment;

[0023] Fig. 9 for Figure 8 The sound unit is shown in a top view with some components hidden.

[0024] Description of labels:

[0025] 1. Basin stand;

[0026] 2. Forming support; 21. Bracket; 22. First pad; 23. Adhesive portion; 24. Second pad; 25. Third pad; 26. External connection portion; 27. Connecting arm;

[0027] 3. Voice coil; 31. Voice coil lead;

[0028] 4. Center magnet;

[0029] 5. Edge magnetic steel;

[0030] 6. Diaphragm;

[0031] 7. Center Washer;

[0032] 8. Yoke iron. DETAILED DESCRIPTION

[0033] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0034] 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. With the technological development of consumer electronic products such as mobile phones and tablets, especially large wearable electronic devices such as AR / VR, various electronic products have put forward higher requirements in terms of product lightness and performance. As an important component of such products, the consumer market has also put forward higher and higher requirements in terms of performance and size. In order to pursue high performance and large amplitude, existing sound units usually have fixed support plates in the sound unit. In order to avoid the fixed support plate structure, the side magnets in the sound unit cannot be made into a fully surrounded voice coil, resulting in a significant loss in voice coil performance.

[0035] To do this, please refer to Figures 1 to 9 As shown, the utility model provides a sound unit, which includes: a vibration component, a basin frame 1, and a shaped support plate 2 and a magnetic circuit component arranged on the basin frame 1. The vibration component includes a voice coil 3, and the magnetic circuit component includes a central magnetic steel 4 and two side magnetic steels 5. The central magnetic steel 4 is located in the area surrounded by the voice coil 3, and the voice coil 3 is located in the area surrounded by the two side magnetic steels 5, and a first gap is provided between the two side magnetic steels 5. The shaped support plate 2 is provided with a connecting arm 27, a part of which is bonded to the voice coil 3, and the other part extends outward from the first gap to extend out of the area surrounded by the two side magnetic steels 5.

[0036] From the above description, it can be known that the beneficial effect of the utility model is that the utility model sets the voice coil 3 in the area surrounded by the two side magnetic steels 5, and only sets the first gap between the two side magnetic steels 5 to avoid the connecting arm 27 of the fixed support plate 2, and the first gap is a narrow channel with a small avoidance space, so that the side magnetic steel 5 can be a surround voice coil 3 structure, and the entire voice coil 3 is almost completely surrounded by the magnetic circuit, and the performance is improved. That is to say, in the utility model, the voice coil 3 is completely surrounded by the side magnetic steels 5 (that is, the voice coil 3 is completely surrounded by the magnetic circuit) except for the narrow first gap between the two side magnetic steels 5, and the design that the voice coil 3 is almost completely surrounded by the magnetic circuit can provide a uniform and strong magnetic field environment for the voice coil 3, and effectively suppress the interference of the external magnetic field on the sound unit, etc., so that the sound unit has higher clarity, accuracy and audio quality when outputting audio, thereby effectively improving the performance of the sound unit.

[0037] Furthermore, in the sound-emitting unit described in the present invention, the two side magnetic steels 5 are symmetrically arranged with respect to each other, the shape of the side magnetic steels 5 is U-shaped, and the openings of the two side magnetic steels are opposite to each other.

[0038] In the above technical solution of the utility model, the shape of the edge magnetic steel 5 is U-shaped, and the openings of the two edge magnetic steels 5 are arranged opposite to each other, so that a fully enclosed structure can be formed between the two edge magnetic steels 5.

[0039] Furthermore, in the sound unit described in the present invention, the shaping support plate 2 includes two brackets 21, the bracket 21 is provided with a first soldering pad 22 connected to the connecting arm 27, and the voice coil 3 is provided with a voice coil lead 31, and the voice coil lead 31 is connected to the first soldering pad 22.

[0040] In the above technical solution of the utility model, a first solder pad 22 for electrical connection is provided on the bracket 21 to ensure that the conversion between the electrical signal and the sound signal can be realized through the first solder pad 22 in subsequent use, so as to ensure that the electrical signal can be smoothly transmitted. On this basis, the voice coil lead 31 is connected to the first solder pad 22 to ensure that the audio signal can be smoothly transmitted from the external circuit to the voice coil 3 of the sound unit to ensure the normal operation of the sound unit and the generation of sound. That is, the smooth transmission of the audio signal is ensured, the sound unit is driven to work normally, and high-quality sound is generated. It should be noted that in some embodiments, the above-mentioned first solder pad 22 can be connected to the voice coil lead 31 by welding to ensure the firmness and stability of the electrical connection.

[0041] Furthermore, in the sound-emitting unit described in the utility model, the shaping support piece 2 includes a bonding portion 23 connected to the connecting arm 27 , and the bonding portion 23 is bonded to the top of the voice coil 3 .

[0042] In the above technical solution of the present invention, the bonding portion 23 on the shaping support 2 is bonded to the top of the voice coil 3 , so that the shaping support 2 and the voice coil 3 can be fixed together.

[0043] Furthermore, in the sound-emitting unit of the present invention, the bonding portion 23 is provided with second pads 24 on both first side edges extending along the first direction, and the second pads 24 are located in the middle of the first side edges.

[0044] In the above technical solution of the utility model, a second pad 24 for electrical connection is provided on the bonding portion 23 of the shaping support sheet 2, so as to ensure that the conversion between the electrical signal and the sound signal can be achieved through the second pad 24 in subsequent use, thereby ensuring that the electrical signal can be transmitted smoothly.

[0045] Furthermore, in the sound-emitting unit described in the present invention, a third pad 25 is provided on the bonding portion 23 , and the third pad 25 is provided at a corner of the bonding portion.

[0046] In the above technical solution of the utility model, four third pads 25 for electrical connection are arranged on the adhesive portion 23 of the shaping support 2, so as to ensure that the conversion between electrical signals and sound signals can be realized through the third pads 25 in subsequent use, thereby ensuring that the electrical signals can be transmitted smoothly.

[0047] Furthermore, in the sound-emitting unit described in the present invention, the shaping support piece 2 further includes an external connection portion 26 connected to the connecting arm 27 , and the external connection portion 26 is connected to the basin frame 1 .

[0048] In the above technical solution of the present invention, the shaping support piece 2 and the basin frame 1 can be fixed together by bonding the external connection portion 26 on the shaping support piece 2 to the bottom of the basin frame 1 .

[0049] Furthermore, in the sound-emitting unit described in the present invention, the vibration component includes a diaphragm 6 , and the diaphragm 6 is arranged above the basin frame 1 .

[0050] In the above technical solution of the utility model, a diaphragm 6 is arranged in the sound-emitting unit, and the diaphragm 6 is arranged on the basin frame 1, so that when the sound-emitting unit is in a working state, the voice coil 3 can drive the diaphragm 6 connected thereto to vibrate, and then the vibration of the diaphragm 6 will push the surrounding air to generate sound waves (i.e., sound).

[0051] Furthermore, in the sound-generating unit described in the utility model, the magnetic circuit assembly further includes a center washer 7 , and the center washer 7 is arranged on the upper surface of the center magnetic steel 4 .

[0052] In the above technical solution of the utility model, a center washer 7 is arranged on the center magnet 4, so that the center washer 7 cooperates with the center magnet 4 in the sound unit to form a strong magnetic field, thereby enabling the voice coil 3 to move therein and generate sound.

[0053] Furthermore, in the sound-emitting unit described in the present invention, a plurality of hollow portions are provided on the center washer 7 , and the hollow portions are located on two side edges of the center washer 7 extending along the first direction or at corners of the center washer 7 .

[0054] In the above technical solution of the utility model, by setting a plurality of hollow parts on the center washer 7, the hollow parts can be used to accommodate the corresponding first pad 22, second pad 24 or third pad 25. It should be noted that the positions of the plurality of hollow parts correspond to the positions of the first pad 22, second pad 24 or third pad 25.

[0055] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is:

[0056] A sound-generating unit includes a vibration component, a basin frame 1, a shaped support plate 2 arranged on the basin frame 1, and a magnetic circuit component. The vibration component includes a voice coil 3 and a diaphragm 6. The diaphragm 6 is arranged above the basin frame 1. The magnetic circuit component includes a central magnetic steel 4 and two side magnetic steels 5 of the same structure. The shape of the central magnetic steel 4 is similar to a cube, and the shape of the side magnetic steel 5 is U-shaped, which is a semi-enclosed structure. The two side magnetic steels 5 are symmetrically arranged, and the openings are opposite to each other to form a fully enclosed structure. The voice coil 3 and the central magnetic steel 4 are arranged in the area surrounded by the two side magnetic steels 5. The shape of the voice coil 3 is similar to a rectangular ring. The central magnetic steel 4 is arranged in the area formed by the voice coil 3, that is, the central magnetic steel 4 is located in the area surrounded by the voice coil 3, and the voice coil 3 is located in the area surrounded by the two side magnetic steels 5. On this basis, in order to avoid the shaped support plate 2, a first gap is provided between the two side magnetic steels 5, that is, the two side magnetic steels 5 are symmetrically arranged at a certain distance.

[0057] In this embodiment, the shaping support sheet 2 includes two brackets 21, each bracket 21 includes a first solder pad 22, a connecting arm 27 and an external connection portion 26 connected in sequence. The connecting arm 27 is composed of two long straight plates connected perpendicularly to each other. Figure 4 The long straight plate portion extending in the horizontal length direction is bonded to the bottom of the voice coil 3, and part of it passes through the first gap and is connected to the external connection portion 26, and the external connection portion 26 is connected to the bottom of the basin frame 1; the long straight plate extending in the vertical height direction is bonded to the inner wall of the voice coil 3, and its upper end is connected to the first soldering pad 22, and the first soldering pad 22 is a rectangular plate. It should be noted that the voice coil 3 is provided with a voice coil lead 31, and the voice coil lead 31 is connected to the first soldering pad 22.

[0058] In addition, in this embodiment, the magnetic circuit assembly further includes a center washer 7, which is arranged on the upper surface of the center magnetic steel 4, and the shape and size of the center washer 7 are substantially similar to the center magnetic steel 4. A plurality of hollow portions are arranged on the center washer 7, and the hollow portions are located on the two side edges extending along the first direction of the center washer 7, and are located at the middle position of the side edges, and the position of the hollow portions corresponds to the position of the first pad 22. In addition, the sound-emitting unit is further provided with a yoke 8, which is arranged at the bottom of the center magnetic steel and the side magnetic steel, and the shape of the yoke is a rectangular plate.

[0059] Please refer to Figures 5 to 7 , Embodiment 2 of the present utility model is:

[0060] A sound-generating unit includes a vibration component, a basin frame 1, a shaped support plate 2 arranged on the basin frame 1, and a magnetic circuit component. The vibration component includes a voice coil 3 and a diaphragm 6, and the diaphragm 6 is arranged above the basin frame 1. The magnetic circuit component includes a central magnetic steel 4 and two side magnetic steels 5 of the same structure. The shape of the central magnetic steel 4 is similar to a cube, and the shape of the side magnetic steel 5 is U-shaped, which is a semi-enclosed structure, and its shape is similar to a rectangular ring with one side missing. The two side magnetic steels 5 are symmetrically arranged, and the openings are opposite to each other to form a fully enclosed structure. The voice coil 3 and the central magnetic steel 4 are arranged in the area surrounded by the two side magnetic steels 5. The shape of the voice coil 3 is similar to a rectangular ring. The central magnetic steel 4 is arranged in the area formed by the voice coil 3, that is, the central magnetic steel 4 is located in the area surrounded by the voice coil 3, and the voice coil 3 is located in the area surrounded by the two side magnetic steels 5. On this basis, in order to avoid the shaped support plate 2, a first gap is provided between the two side magnetic steels 5, that is, the two side magnetic steels 5 are symmetrically arranged at a certain distance.

[0061] In this embodiment, the shaping support sheet 2 is composed of an external connection portion 26, a connection arm 27, an adhesive portion 23 and a second solder pad 24 which are connected in sequence. Figure 6 Specifically, the shaping support plate 2 is introduced. The external connection part 26 is connected to the bottom of the basin frame 1. The connecting arm 27 is composed of two long straight plates connected perpendicularly to each other. The long straight plate extending along the second direction is arranged in the first gap, and passes through the first gap to connect with the external connection part 26. The long straight plate extending along the vertical height direction is bonded to the outer wall of the voice coil 3. The bonding part 23 is connected to one end of the connecting arm 27, and the shape of the bonding part 23 is similar to a rectangular ring. The bonding part 23 covers the top of the voice coil 3 and is bonded to the top of the voice coil 3. When the bonding part 23 is connected along the first direction (i.e., as shown in FIG. 1 ), the bonding part 23 is connected to the outer wall of the voice coil 3. Figure 7 A second pad 24 is provided on each of the two first sides extending in the horizontal length direction of the first side. The second pad 24 is located in the middle of the first side and extends inward. The second pad 24 is a rectangular plate. It should be noted that a voice coil lead 31 is provided on the voice coil 3, and the voice coil lead 31 is connected to the second pad 24.

[0062] In addition, in this embodiment, the magnetic circuit assembly further includes a center washer 7, which is arranged on the upper surface of the center magnetic steel 4, and the shape and size of the center washer 7 are substantially similar to the center magnetic steel 4. A plurality of hollow portions are arranged on the center washer 7, and the hollow portions are located on the two side edges extending along the first direction of the center washer 7, and are located at the middle position of the side edges, and the position of the hollow portions corresponds to the position of the second pad 24. In addition, the sound-emitting unit is further provided with a yoke 8, which is arranged at the bottom of the center magnetic steel and the side magnetic steel, and the shape of the yoke is a rectangular plate.

[0063] Please refer to Figures 8 to 9 , Embodiment 3 of the present utility model is:

[0064] A sound-generating unit includes a vibration component, a basin frame 1, a shaped support plate 2 arranged on the basin frame 1, and a magnetic circuit component. The vibration component includes a voice coil 3 and a diaphragm 6, and the diaphragm 6 is arranged above the basin frame 1. The magnetic circuit component includes a central magnetic steel 4 and two side magnetic steels 5 of the same structure. The shape of the central magnetic steel 4 is similar to a cube, and the side magnetic steels 5 are a semi-enclosed structure. The two side magnetic steels 5 are symmetrically arranged, and the openings are opposite to each other to form a fully enclosed structure. The voice coil 3 and the central magnetic steel 4 are arranged in the area surrounded by the two side magnetic steels 5. The shape of the voice coil 3 is similar to a rectangular ring. The central magnetic steel 4 is arranged in the area formed by the voice coil 3, that is, the central magnetic steel 4 is located in the area surrounded by the voice coil 3, and the voice coil 3 is located in the area surrounded by the two side magnetic steels 5. On this basis, in order to avoid the shaped support plate 2, a first gap is provided between the two side magnetic steels 5, that is, the two side magnetic steels 5 are symmetrically arranged at a certain distance.

[0065] In this embodiment, the shaping support sheet 2 is composed of an external connection portion 26, a connection arm 27, an adhesive portion 23 and a third pad 25 connected in sequence. Figure 8 Specifically, the shaping support sheet 2 is introduced. The external connection part 26 is connected to the bottom of the basin frame 1. The connecting arm 27 is composed of two long straight plates connected perpendicularly to each other. The long straight plate extending in the second direction is arranged in the first gap, and passes through the first gap to connect with the external connection part 26. The long straight plate extending in the height direction is bonded to the outer wall of the voice coil 3. The bonding part 23 is connected to one end of the connecting arm 27, and the shape of the bonding part 23 is similar to a rectangular ring. The bonding part 23 covers the top of the voice coil 3 and is bonded to the top of the voice coil 3. Four protruding third pads 25 are correspondingly arranged at the four corners of the bonding part 23. The shape of the four third pads is similar to a rectangular plate. The two sides of the third pad are connected to the bonding part, and a right angle of the third pad points to the internal area formed by the bonding part. It should be noted that a voice coil lead 31 is provided on the voice coil 3, and the voice coil lead 31 is connected to the third pad 25.

[0066] In addition, in this embodiment, the magnetic circuit assembly further includes a center washer 7, which is arranged on the upper surface of the center magnetic steel 4, and the shape and size of the center washer 7 are substantially similar to the center magnetic steel 4. A plurality of hollow portions are provided at the four corners of the center washer 7, and the positions of the hollow portions correspond to the positions of the third pads 25. In addition, the sound-generating unit is further provided with a yoke 8, which is arranged at the bottom of the center magnetic steel and the side magnetic steel, and the shape of the yoke is a rectangular plate.

[0067] In summary, in the sound unit provided by the utility model, the side magnets only need to avoid the connecting arm position of the shaped support plate, and other positions can fully surround the voice coil. That is, except for the middle connecting material position of the shaped support plate, the entire voice coil is almost fully surrounded by the magnetic circuit, thereby improving performance.

[0068] The above description is only 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 specification 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 generating unit, comprising: A vibration component, a basin frame, and a shaped support plate and a magnetic circuit component arranged on the basin frame, characterized in that the vibration component includes a voice coil, the magnetic circuit component includes a central magnetic steel and two side magnetic steels, the central magnetic steel is located in the area surrounded by the voice coil, the voice coil is located in the area surrounded by the two side magnetic steels, and a first gap is provided between the two side magnetic steels; the shaped support plate is provided with a connecting arm, a part of the connecting arm is bonded to the voice coil, and the other part extends outward from the first gap to extend out of the area surrounded by the two side magnetic steels.

2. The sound generating unit according to claim 1, characterized in that: The two side magnetic steels are symmetrically arranged with respect to each other, the shape of the side magnetic steels is U-shaped, and the openings of the two side magnetic steels are opposite to each other.

3. The sound generating unit according to claim 1, characterized in that: The shaping support sheet comprises two brackets, the brackets are provided with a first soldering pad connected to the connecting arm, the voice coil is provided with a voice coil lead, and the voice coil lead is connected to the first soldering pad.

4. The sound generating unit according to claim 1, characterized in that: The shaping support sheet comprises a bonding portion connected to the connecting arm, and the bonding portion is bonded to the top of the voice coil.

5. The sound generating unit according to claim 4, characterized in that: The bonding portion is provided with a second pad on both first side edges extending along the first direction, and the second pad is located at a middle position of the first side edge.

6. The sound generating unit according to claim 4, characterized in that: The bonding portion is provided with a third pad, and the third pad is provided at a corner of the bonding portion.

7. The sound generating unit according to claim 1, characterized in that: The shaping support piece also includes an external connection portion connected to the connecting arm, and the external connection portion is connected to the basin frame.

8. The sound generating unit according to claim 1, characterized in that: The vibration assembly includes a vibration membrane, and the vibration membrane is arranged above the basin frame.

9. The sound generating unit according to claim 1, characterized in that: The magnetic circuit assembly also includes a center washer, and the center washer is arranged on the upper surface of the center magnetic steel.

10. The sound generating unit according to claim 9, characterized in that: The center washer is provided with a plurality of hollow portions, and the hollow portions are located on two side edges of the center washer extending along the first direction or at corners of the center washer.

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