Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand and a vibration assembly arranged on the basin stand, the vibration assembly comprises a plurality of voice coils formed by winding wires in multiple layers, the plurality of voice coils are arranged side by side, two adjacent voice coils are bonded with each other, and at least one concave part is arranged on the bonding surface of each voice coil. According to the voice coil, through different winding structures, a glue storage space can be reserved in the middle, the glue bonding effect is enhanced, and through the different winding structures, mutual buckling of the voice coils can be achieved, and the bonding area is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, in particular to a sound generating unit. Background Art

[0002] The sound unit is a common electroacoustic transducer that converts electrical energy into sound energy. It is widely used in electronic products such as mobile phones, laptops, and hearing aids. With the rapid development of these electronic products, especially large wearable electronic devices such as AR / VR, there are higher requirements for thinner and lighter appearance and higher performance. As an important component of such products, the sound unit has also put forward higher and higher requirements in terms of performance and size. In the existing technology, in order to pursue high-performance sound units, a multi-voice coil solution is used. However, the bonding effect between the multiple voice coils in the current multi-voice coil structure is not good, and it is easy to have loose bonding, which leads to poor listening during use and affects the use of the sound unit. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a sound unit to solve the problem that two adjacent voice coils in the existing sound unit are not firmly bonded and have poor bonding effect.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A sound-emitting unit includes a basin frame and a vibration component arranged on the basin frame. The vibration component includes multiple voice coils formed by winding multiple layers of wires. The multiple voice coils are arranged side by side, and two adjacent voice coils are bonded to each other, and at least one recess is provided on the bonding surface of the voice coils.

[0006] Furthermore, in the sound-emitting unit of the present invention, the recessed portion is provided in an annular circumferential direction on the outer surface of the voice coil.

[0007] Furthermore, in the sound-emitting unit of the present invention, the plurality of voice coils include at least a first voice coil and a second voice coil, the first voice coil is provided with at least one first recessed portion, and the second voice coil is provided with at least one second recessed portion.

[0008] Furthermore, in the sound-emitting unit of the present invention, there is a height difference between two adjacent layers of wires in the first voice coil, and there is a height difference between two adjacent layers of wires in the second voice coil.

[0009] Furthermore, in the sound unit of the present invention, the first recessed portion is provided at any height position in the vertical height direction of the first voice coil bonding surface, and the second recessed portion is provided at any height position in the vertical height direction of the second voice coil bonding surface.

[0010] Furthermore, in the sound unit of the present invention, the first recessed portion and the second recessed portion are arranged opposite to each other to enclose and form a cavity, and the adjacent wire layers of the first voice coil and the second voice coil are arranged at the same height.

[0011] Furthermore, in the sound unit of the present invention, the first recessed portion and the second recessed portion are staggered, and there is a height difference between adjacent conductive wire layers of the first voice coil and the second voice coil.

[0012] Furthermore, the sound-emitting unit of the present invention further includes a yoke, which is connected to the basin frame.

[0013] Furthermore, the sound-emitting unit of the present invention further includes a plurality of magnets arranged on the yoke, and the magnets are located in the area surrounded by the voice coil.

[0014] Furthermore, in the sound-emitting unit described in the present invention, the vibration component further includes a diaphragm, the diaphragm is arranged on the basin frame, and the diaphragm is connected to the voice coil.

[0015] The beneficial effect of the present invention is that, in the present invention, multiple voice coils are arranged side by side, and two adjacent voice coils are bonded to each other. By providing at least one recessed portion on the bonding surface of the voice coil, the cross-section of the voice coil has a stepped structure or a concave structure, thereby increasing the glue storage space and the glue bonding area between the adjacent voice coils, thereby enhancing the bonding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the sound-emitting unit of the first embodiment of the present utility model;

[0017] Figure 2 This is an exploded view of the sound unit of the first embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional schematic diagram of the sound unit of the first embodiment of the present utility model;

[0019] Figure 4 This is a cross-sectional view of the connection position between the first voice coil and the second voice coil in the sound-emitting unit of the first embodiment of the present invention;

[0020] Figure 5 This is a cross-sectional schematic diagram of the sound unit of the second embodiment of the present utility model;

[0021] Figure 6 A cross-sectional view of the connection between the first voice coil and the second voice coil in the sound-emitting unit of the second embodiment of the present invention;

[0022] Figure 7This is a cross-sectional schematic diagram of the sound unit of the third embodiment of the present utility model;

[0023] Figure 8 This is a cross-sectional view of the connection between the first voice coil and the second voice coil in the sound-emitting unit of the third embodiment of the present invention;

[0024] Figure 9 Schematic cross-section of the sound unit of the fourth embodiment of the present invention;

[0025] Figure 10 A cross-sectional view of the connection between the first voice coil and the second voice coil in the sound-emitting unit according to the fourth embodiment of the present invention;

[0026] Figure 11 This is a cross-sectional schematic diagram of a sound-emitting unit according to a fifth embodiment of the present invention;

[0027] Figure 12 This is a cross-sectional view of the connection position between the first voice coil and the second voice coil in the sound-emitting unit of the fifth embodiment of the present invention.

[0028] Description of labels:

[0029] 1. Basin rack;

[0030] 2. First voice coil; 21. First recessed portion; 22. Raised portion;

[0031] 3. second voice coil; 31. second recess;

[0032] 4. Yoke iron;

[0033] 5. Magnetic steel;

[0034] 6. Diaphragm;

[0035] 7. Washi;

[0036] 8. Glue layer. DETAILED DESCRIPTION

[0037] 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.

[0038] Please refer to Figures 1 to 12 The present invention designs a sound unit, which includes a basin frame 1 and a vibration component arranged on the basin frame 1. The vibration component includes a plurality of voice coils formed by winding multiple layers of wires. The plurality of voice coils are arranged side by side, and two adjacent voice coils are bonded to each other, and at least one recessed portion is provided on the bonding surface of the voice coil.

[0039] The structural principle / working principle of the present invention is briefly described as follows: In pursuit of a high-performance sound unit, the sound unit can adopt a multi-voice coil structure. However, when adopting a multi-voice coil structure, the bonding effect between adjacent voice coils in the multi-voice coil structure is poor, which in turn affects the sound performance of the sound unit. To solve the above problem, in the present invention, multiple voice coils are arranged side by side, and glue can be provided between adjacent voice coils for bonding. On this basis, at least one recessed portion is provided on the bonding surface of the voice coil, so that the cross-section of the voice coil in the vertical and horizontal directions has a stepped structure or a concave structure, etc., so as to increase the glue storage space and glue bonding area between adjacent voice coils, thereby enhancing the bonding effect.

[0040] Furthermore, in the sound-emitting unit of the present invention, the recessed portion is provided in an annular circumferential direction on the outer surface of the voice coil.

[0041] In actual use, it should be noted that the recessed portion can be arranged in a ring shape surrounding the circumference of the voice coil, or can be arranged only on a part of the side surface of the outer circumference of the voice coil (ie, the side surface adjacent to the adjacent voice coil).

[0042] Furthermore, in the sound-emitting unit of the present invention, there is a height difference between two adjacent layers of wires of the voice coil.

[0043] In the above-mentioned technical solution of the present invention, a height difference exists between adjacent layers of wire in the voice coil, meaning the wires are staggered to form the voice coil. This staggered winding method makes the voice coil more structurally stable, helping to reduce potential deformation or damage during vibration, thereby improving its reliability and service life. Furthermore, the height difference between adjacent layers of wire in the voice coil increases the bonding area compared to structures without a height difference, thereby enhancing the bonding effect.

[0044] Furthermore, in the sound unit of the present invention, the plurality of voice coils include at least a first voice coil 2 and a second voice coil 3 , the first voice coil 2 is provided with at least one first recess 21 , and the second voice coil 3 is provided with at least one second recess 31 .

[0045] In actual use, the sound unit includes at least two or more voice coils. Taking two voice coils as an example, in order to enhance the glue bonding effect, at least one first recess 21 can be set on the first voice coil 2 and at least one second recess 31 can be set on the second voice coil 3.

[0046] Furthermore, in the sound unit described in the present invention, the first recessed portion 21 is provided at any height position in the vertical height direction of the bonding surface of the first voice coil 2 , and the second recessed portion 31 is provided at any height position in the vertical height direction of the bonding surface of the second voice coil 3 .

[0047] In actual use, the first voice coil 2 is provided with one or more first recesses 21, which can be located at different heights and positions on the bonding surface of the first voice coil 2. Similarly, the second voice coil 3 is provided with one or more second recesses 31, which can be located at different heights and positions on the bonding surface of the second voice coil 3. Specifically, in the first case (the first voice coil 2 has one first recess 21, and the second voice coil 3 has only one second recess 31), the first recess 21 can be located at different heights and positions on the bonding surface of the first voice coil 2. The position of the first recess 21 can be selected based on actual conditions, such as the upper end, middle end, or lower end of the bonding surface of the first voice coil 2 in the vertical direction, and this is not limited here. Similarly, a second recessed portion 31 is provided on the second voice coil 3. The second recessed portion 31 can be located at different heights on the second voice coil 3. The location of the second recessed portion 31 can be selected based on actual conditions, such as the upper, middle, or lower end of the second voice coil 3's bonding surface in the vertical direction, but this is not limited here. In the second scenario (the first voice coil 2 has multiple first recessed portions 21, and the second voice coil 3 has multiple second recessed portions 31): the multiple first recessed portions 21 are located at different heights on the first voice coil 2's bonding surface, and the multiple second recessed portions 31 are located at different heights on the second voice coil 3's bonding surface in the vertical direction.

[0048] Furthermore, in the sound unit of the present invention, the first recessed portion 21 and the second recessed portion 31 are arranged opposite to each other to enclose and form a cavity, and the adjacent wire layers of the first voice coil 2 and the second voice coil 3 are arranged at the same height.

[0049] In the above technical solution of the present invention, the first recessed portion 21 and the second recessed portion 31 are arranged opposite to each other to form a corresponding cavity, and the cavity (i.e., the glue storage space) is used to set glue for bonding. By setting opposite recessed portions on the voice coil bonding surface, the glue storage space between adjacent voice coils can be increased, thereby enhancing the glue bonding effect.

[0050] Furthermore, in the sound unit of the present invention, the first recessed portion 21 and the second recessed portion 31 are staggered, and there is a height difference between adjacent conductive wire layers of the first voice coil 2 and the second voice coil 3 .

[0051] In the above-described technical solution of the present invention, the staggered arrangement of the first recessed portion 21 and the second recessed portion 31 allows the voice coils to interlock, thereby increasing the bonding area between adjacent voice coils. Furthermore, due to the height difference between the adjacent conductor layers of the first voice coil 2 and the second voice coil 3, i.e., the first and second voice coils 2 and 3 are connected via an inclined surface, the contact area between the first and second voice coils 2 and 3 is further increased, thereby effectively improving the reliability of the connection between the two and enhancing the overall structural strength of the voice coil assembly.

[0052] Furthermore, the sound-emitting unit of the present invention further includes a yoke 4 , which is connected to the basin frame 1 .

[0053] Furthermore, the sound-emitting unit of the present invention further comprises a plurality of magnets 5 provided on the yoke 4 , wherein the magnets 5 are located in the area surrounded by the voice coil.

[0054] In the above technical solution of the present invention, a magnet 5 is provided in the middle of the area surrounded by the voice coil. The magnet 5 generates a constant magnetic field, so that the voice coil can vibrate under the action of force when powered on.

[0055] Furthermore, in the sound-emitting unit described in the present invention, the vibration component further includes a diaphragm 6 , the diaphragm 6 is disposed on the basin frame 1 , and the diaphragm 6 is connected to the voice coil.

[0056] In the above technical solution of the present invention, in the micro speaker, when the voice coil is charged with current, the voice coil will vibrate up and down. Since the voice coil is connected to the diaphragm 6, the voice coil will also drive the diaphragm 6 to vibrate, and then push the surrounding air to vibrate to form sound waves (i.e. sound).

[0057] Please refer to Figures 1 to 4 The first embodiment of the present invention is a sound unit, which is used in electronic products such as mobile phones, tablet computers, smart watches, AR / VR wearable devices, etc. The sound unit includes a diaphragm 6, a basin frame 1, a voice coil, a washer 7, a magnet 5 and a yoke 4 from top to bottom. Figures 1 to 4 The above components are introduced in detail.

[0058] In this embodiment, the diaphragm 6 is arranged on the frame 1 and is located above the frame 1 in the vertical direction. The frame 1 is arranged on the yoke 4 and is located above the yoke 4 in the vertical direction. The yoke 4 is shaped like a rectangular block. Figure 1As shown, the diaphragm 6, the frame 1, and the yoke 4 together form a housing cavity, which contains at least two corresponding magnets 5, two voice coils, and two washers 7. Specifically, the upper ends of the two voice coils are connected to the diaphragm 6, the two magnets 5 are mounted on the yoke 4, and each magnet 5 is at least partially located in the area formed by the corresponding voice coil. The two washers 7 are mounted above the magnets 5 and are both located in the area formed by the corresponding voice coil.

[0059] In this embodiment, two voice coils (i.e., the first voice coil 2 and the second voice coil 3) are arranged side by side (horizontally) in the accommodating cavity, and glue is applied between adjacent voice coils. Each voice coil is made of multiple layers of wires, and there is a height difference between the two adjacent layers of wires in each voice coil. Figure 4 As shown, the height difference between two adjacent layers of wires in the first voice coil 2 is 0.5 times the wire diameter, and the height difference between two adjacent layers of wires in the second voice coil 3 is 0.5 times the wire diameter. It should be noted that in other optional embodiments, the height difference between two adjacent layers of wires can also be other dimensions, such as 0.3 times the wire diameter, and this is not limited here.

[0060] In practical applications, such as Figure 3 as well as Figure 4 As shown, the first voice coil 2 and the second voice coil 3 have the same structure. A first recessed portion 21 is provided on the outer wall of the first voice coil 2 away from the magnetic steel 5. The first recessed portion 21 is arranged in a circular circumferential direction on the outer wall of the first voice coil 2. The first recessed portion 21 is located at the upper end of the outer wall of the first voice coil 2, and the depth of the first recessed portion 21 (i.e., the depth along the horizontal radial direction of the conductor) is one times the diameter of the conductor. Correspondingly, a second recessed portion 31 is provided on the outer wall of the second voice coil 3 away from the magnetic steel 5. The second recessed portion 31 is arranged in a circular circumferential direction on the outer wall of the second voice coil 3. The second recessed portion 31 is located at the upper end of the outer wall of the first voice coil 2, and the depth of the second recessed portion 31 (i.e., the depth along the horizontal radial direction of the conductor) is one times the diameter of the conductor. That is, the cross-sectional structures of the first voice coil 2 and the second voice coil 3 both present a stepped structure (as shown in FIG. Figure 3 It should be noted that the first recessed portion 21 and the second recessed portion 31 are arranged opposite to each other, and the adjacent conductor layers of the first voice coil 2 and the second voice coil 3 are arranged at the same height, as shown in FIG. Figure 4 As shown in FIG, the conductor layer (i.e., the first conductor layer) of the first voice coil 2 close to the second voice coil 3 and the conductor layer (i.e., the second conductor layer) of the second voice coil 3 close to the first voice coil 2 are arranged at the same height. In actual application, glue is applied to the first recessed portion 21, the second recessed portion 31, and the space between the adjacent sides of the first voice coil 2 and the second voice coil 3 to bond and fix the first voice coil 2 and the second voice coil 3. Figure 3 as well as Figure 4As shown, the black area between the two voice coils is the glue layer 8. Since a first recess 21 is added to the first voice coil 2, and a second recess 31 corresponding to the first recess 21 is added to the second voice coil 3, both the first recess 21 and the second recess 31 serve as glue storage spaces, which can be used to retain glue during bonding. The addition of additional glue storage space helps enhance the glue bonding effect. Furthermore, the stepped cross-sectional structure of the first and second voice coils 2 and 3 also increases the glue bonding area between adjacent voice coils, further enhancing the glue bonding effect.

[0061] Example 2

[0062] Please refer to Figure 5 as well as Figure 6 The second embodiment of the present invention is a parallel technical solution of the first embodiment, and differs from the first embodiment in that:

[0063] The first recessed portion 21 is located at the middle position of the outer side wall of the first voice coil 2 in the vertical height direction, and correspondingly, the second recessed portion 31 is located at the middle position of the outer side wall of the second voice coil 3 in the vertical height direction. Figure 5 As shown, the cross section of the first voice coil 2 is a concave structure, and the cross section of the second voice coil 3 is also a concave structure. Figure 5 as well as Figure 6 As shown, the black area between the two voice coils is the glue layer 8.

[0064] Example 3

[0065] Please refer to Figure 7 as well as Figure 8 The third embodiment of the present invention is a parallel technical solution of the first embodiment, and differs from the first embodiment in that:

[0066] The first recessed portion 21 is located at the lower end of the outer wall of the first voice coil 2 in the vertical height direction. Correspondingly, the second recessed portion 31 is located at the lower end of the outer wall of the second voice coil 3 in the vertical height direction. That is, the cross-sectional structure of the first voice coil 2 and the second voice coil 3 presents an inverted step structure (e.g., Figure 7 As shown). For example, Figure 7 as well as Figure 8 As shown, the black area between the two voice coils is the glue layer 8.

[0067] Example 4

[0068] Please refer to Figure 9 as well as Figure 10 The fourth embodiment of the present invention is a parallel technical solution of the first embodiment, and differs from the first embodiment in that:

[0069] The first recessed portion 21 and the second recessed portion 31 are staggered, that is, the first recessed portion 21 is arranged at the lower end of the first voice coil 2, and the second recessed portion 31 is arranged at the upper end of the second voice coil 3, and the two are just staggered to achieve mutual locking and positioning. Moreover, the depth of the first recessed portion 21 (that is, the depth along the horizontal radial direction of the wire) is twice the diameter of the wire, and the depth of the second recessed portion 31 (that is, the depth along the horizontal radial direction of the wire) is twice the diameter of the wire. In addition, there is a height difference between the adjacent wire layers of the first voice coil 2 and the second voice coil 3, that is, there is a height difference between the first wire layer and the second wire layer. In this embodiment, there is a height difference between the adjacent wire layers of the first voice coil 2 and the second voice coil 3, which can correspondingly increase the bonding area between adjacent voice coils. In addition, since the depth of the first recessed portion 21 and the depth of the second recessed portion 31 increase accordingly, the bonding area between adjacent voice coils can also be increased. For example, as Figure 9 as well as Figure 10 As shown, the black area between the two voice coils is the glue layer 8.

[0070] Example 5

[0071] Please refer to Figure 11 as well as Figure 12 The fifth embodiment of the present invention is a parallel technical solution of the first embodiment, and differs from the first embodiment in that:

[0072] The first voice coil 2 is provided with three first recesses 21, one of which is located in the middle of the voice coil sidewall in the vertical direction, and the other two are located at the upper and lower ends, forming two raised portions 22 on the outer wall of the first voice coil 2. The second voice coil 3 is provided with two second recesses 31, offset from the first recesses 21. The two raised portions 22 of the first voice coil 2 are embedded in the two second recesses 31 of the second voice coil 3, forming a concave-convex locking structure at the interface between the first and second voice coils 2 and 3. This concave-convex locking structure effectively increases the joint area between the first and second voice coils 2 and 3, and also ensures that the voice coils are locked and positioned together, providing a more stable connection. Furthermore, the depth of the first recess 21 (i.e., the depth along the horizontal radial direction of the conductor) is twice the diameter of the conductor, and the depth of the second recess 31 (i.e., the depth along the horizontal radial direction of the conductor) is twice the diameter of the conductor. Furthermore, there is a height difference between the adjacent conductor layers of the first voice coil 2 and the second voice coil 3, that is, there is a height difference between the first conductor layer and the second conductor layer. In this embodiment, by increasing the depth of the first recessed portion 21 and the depth of the second recessed portion 31, and making the height difference between the adjacent conductor layers of the first voice coil 2 and the second voice coil 3, the bonding area between the adjacent voice coils can be increased accordingly. For example, Figure 11 as well as Figure 12 As shown, the black area between the two voice coils is the glue layer 8.

[0073] To sum up, the sound unit provided by the present invention has a multi-voice coil structure, and multiple voice coils are arranged side by side in the horizontal direction. The voice coils have different winding structures, and glue storage space can be left in the middle to enhance the glue bonding effect. In addition, the multiple voice coils can be interlocked with each other through different winding structures to increase the bonding area.

[0074] 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: The invention comprises a basin frame and a vibration component arranged on the basin frame, wherein the vibration component comprises a plurality of voice coils formed by winding multiple layers of wires, the plurality of voice coils are arranged side by side, two adjacent voice coils are bonded to each other, and at least one recess is provided on the bonding surface of the voice coils.

2. The sound unit according to claim 1, characterized in that The recessed portion is arranged in an annular circumferential direction on the outer surface of the voice coil.

3. The sound unit according to claim 1, wherein: There is a height difference between the two adjacent layers of wires of the voice coil.

4. The sound unit according to claim 1, characterized in that The plurality of voice coils include at least a first voice coil and a second voice coil. The first voice coil is provided with at least one first recessed portion, and the second voice coil is provided with at least one second recessed portion.

5. The sound unit according to claim 4, characterized in that: The first recessed portion is provided at any height position in the vertical height direction of the first voice coil bonding surface, and the second recessed portion is provided at any height position in the vertical height direction of the second voice coil bonding surface.

6. The sound unit according to claim 5, characterized in that: The first recessed portion and the second recessed portion are arranged opposite to each other to enclose and form a cavity, and the adjacent conductive wire layers of the first voice coil and the second voice coil are arranged at the same height.

7. The sound unit according to claim 5, characterized in that: The first recessed portion and the second recessed portion are staggered, and there is a height difference between adjacent conductive wire layers of the first voice coil and the second voice coil.

8. The sound unit according to claim 1, wherein: It also includes a yoke connected to the basin frame.

9. The sound unit according to claim 1, characterized in that: The invention also includes a plurality of magnetic steels arranged on the yoke, wherein the magnetic steels are located in the area surrounded by the voice coil.

10. The sound unit according to claim 1, characterized in that: The vibration assembly further includes a diaphragm, which is arranged on the basin frame and connected to the voice coil.

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