sound production unit

Abstract

The utility model discloses a sound unit, including yoke, linear conductor, diaphragm subassembly and a pair of side magnetic assembly, and side magnetic assembly is located on the yoke, and the magnetic gap is formed between two side magnetic assemblies, linear conductor is at least partially housed in the magnetic gap, and diaphragm subassembly is connected linear conductor. The sound unit simple novel structure, adopts linear conductor strategy and drives diaphragm subassembly vibration sound, compared with ring frame shape voice coil structure, and linear conductor greatly reduces the occupation of the internal space of sound unit, makes the overall volume of sound unit can be made smaller, more importantly, compared with traditional sound unit, cancelled the setting of central magnetic component, greatly reduced the space required for the magnetic circuit component of sound unit to make the overall volume of sound unit can be made smaller, make it more satisfy the development trend of mobile terminal product light and thin.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic converter technology, and in particular to a sound generating unit. Background Technology

[0002] Nowadays, mobile devices such as smartphones and tablets enrich people's lives, and the sound unit plays an indispensable role as an audio device.

[0003] As mobile terminal products become smaller, the installation space reserved for the sound unit is getting smaller and smaller. The existing sound units are generally three-magnetic circuit architecture or five-magnetic circuit architecture. The three-magnetic circuit architecture / five-magnetic circuit architecture is inherently large, which directly leads to the inability to make the sound unit smaller. Therefore, how to miniaturize the sound unit to adapt to increasingly thinner and lighter mobile terminal products is a problem that designers urgently need to solve. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a miniature sound generating unit with a smaller space occupied by the magnetic circuit assembly.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising: Yoke; A pair of lateral magnetic assemblies are disposed on the yoke, and a magnetic gap is formed between the two lateral magnetic assemblies; A linear conductor, at least partially housed within the magnetic gap; A diaphragm assembly that connects to the linear conductor.

[0006] Furthermore, the lateral magnetic assembly includes a lateral magnet and a lateral washer, the lateral magnet being located below the lateral washer, and the lateral magnet connecting the lateral washer to the yoke.

[0007] Furthermore, the linear conductor includes an inner conductor and an outer sheath covering the inner conductor.

[0008] Furthermore, the inner conductor comprises multiple conductor wires connected in parallel.

[0009] Furthermore, the two adjacent guidewires are staggered.

[0010] Furthermore, the linear conductors are in multiple groups, with adjacent groups of linear conductors bonded together.

[0011] Furthermore, it also includes a frame and a centering support, the centering support connecting the linear conductor to the frame, and the diaphragm assembly connecting to the frame.

[0012] Furthermore, the basin stand has a clearance window, in which a portion of the side magnetic assembly is accommodated.

[0013] Furthermore, the linear conductors are in two sets, and the ends of the two sets of linear conductors are bent and extended in a direction away from each other to form a curved portion. The ends of the curved portions are welded to the centering support plate for conduction.

[0014] Furthermore, the sound-generating unit has a planar symmetrical structure.

[0015] The beneficial effects of this utility model are as follows: The sound-generating unit has a simple and novel structure. It uses a linear conductor to drive the diaphragm assembly to vibrate and generate sound. Compared with the ring-shaped voice coil structure, the linear conductor greatly reduces the space occupied by the internal space of the sound-generating unit, making the overall volume of the sound-generating unit smaller. More importantly, compared with the traditional sound-generating unit, the central magnetic component is eliminated, forming a two-magnetic circuit architecture, which greatly reduces the space required by the magnetic circuit components of the sound-generating unit, thereby making the overall volume of the sound-generating unit smaller, which can better meet the development trend of thinner and lighter mobile terminal products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the sound-generating unit in Embodiment 1; Figure 2 This is a cross-sectional view of the sound-generating unit in Embodiment 1; Figure 3 This is a schematic diagram of the internal structure of the sound-generating unit in Embodiment 1; Figure 4 This is an exploded view of the linear conductor in the sound-generating unit of Embodiment 1; Figure 5 This is a schematic diagram of the internal structure of the sound-generating unit in Embodiment 2.

[0017] Label Explanation: 1. Pot stand; 11. Avoidance window; 2. Yoke; 3. Side magnetic assembly; 31. Side magnet; 32. Side washer; 4. Linear conductor; 41. Inner conductor; 411. Guide wire; 42. Outer sheath; 421. Elevated section; 43. Bending section; 5. Diaphragm assembly; 51. Inner fixing part; 52. Folded ring part; 53. Outer fixing part; 6. Magnetic gap; 7. Centering support; 71. Internal mounting part; 72. Cantilever part; 73. External mounting part. Detailed Implementation

[0018] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0019] Please refer to Figures 1 to 3 The sound-generating unit includes a yoke 2, a linear conductor 4, a diaphragm assembly 5, and a set of side magnetic assemblies 3. The side magnetic assemblies 3 are disposed on the yoke 2, and a magnetic gap 6 is formed between two of the side magnetic assemblies 3. The linear conductor 4 is at least partially housed in the magnetic gap 6. The diaphragm assembly 5 is connected to the linear conductor 4.

[0020] As can be seen from the above description, the beneficial effects of this utility model are as follows: The sound-generating unit has a simple and novel structure, and uses a linear conductor 4 to drive the diaphragm assembly 5 to vibrate and generate sound. Compared with the ring-shaped voice coil structure, the linear conductor 4 greatly reduces the space occupied by the internal space of the sound-generating unit, so that the overall volume of the sound-generating unit can be made smaller. More importantly, compared with the traditional sound-generating unit, the setting of the central magnetic assembly is eliminated, forming a two-magnetic circuit architecture, which greatly reduces the space required by the magnetic circuit assembly of the sound-generating unit, thereby making the overall volume of the sound-generating unit smaller, so as to better meet the development trend of thinner and lighter mobile terminal products.

[0021] Please refer to Figure 2 and Figure 3 Furthermore, the sound-generating unit has a planar symmetrical structure.

[0022] As can be seen from the above description, the sound-generating unit has a planar symmetrical structure, which can ensure the force balance of the diaphragm assembly 5 and improve the polarization phenomenon of the sound-generating unit.

[0023] Please refer to Figure 1 and Figure 2 Furthermore, the side magnetic assembly 3 includes a side magnet 31 and a side washer 32. The side magnet 31 is located below the side washer 32, and the side magnet 31 connects the side washer 32 and the yoke 2.

[0024] As described above, the presence of the side washer 32 can guide the magnetic field lines to the magnetic gap 6, thereby improving the utilization rate of magnetic force and enhancing the performance of the sound unit.

[0025] Please refer to Figures 2 to 4 Furthermore, the linear conductor 4 includes an inner conductor 41 and an outer sheath 42 covering the inner conductor 41.

[0026] As can be seen from the above description, the linear conductor 4 has a simple structure and is easy to manufacture.

[0027] Please refer to Figure 2 and Figure 4 Furthermore, the inner conductor 41 includes multiple guide wires 411 connected in parallel.

[0028] As can be seen from the above description, there are a variety of possible structural forms for the inner conductor 41.

[0029] Please refer to Figure 2 Furthermore, the two adjacent guide wires 411 are staggered.

[0030] As can be seen from the above description, the staggered arrangement of the two adjacent conductors 411 can improve the phenomenon of concentrated heat generation in the linear conductor 4.

[0031] Please refer to Figure 2 and Figure 3 Furthermore, the linear conductor 4 is in multiple groups, and adjacent groups of linear conductor 4 are bonded together.

[0032] As can be seen from the above description, when there are multiple sets of linear conductors 4, the mutual bonding of two adjacent sets of linear conductors 4 can improve the structural stability of the sound-generating unit and reduce the risk of the linear conductors 4 detaching from the diaphragm assembly 5.

[0033] Please refer to Figure 1 and Figure 3 Furthermore, it also includes a basin frame 1 and a centering support 7, wherein the centering support 7 connects the linear conductor 4 to the basin frame 1, and the diaphragm assembly 5 is connected to the basin frame 1.

[0034] As can be seen from the above description, the centering support 7 can correct the polarization of the linear conductor 4, thereby improving the polarization phenomenon of the sound-generating unit.

[0035] Please refer to Figure 1 and Figure 2 Furthermore, the basin stand 1 has a clearance window 11, in which a portion of the side magnetic assembly 3 is accommodated.

[0036] As can be seen from the above description, the fact that a portion of the side magnetic component 3 is housed in the clearance window 11 allows the volume of the side magnetic component 3 to be set larger, thereby increasing the BL value of the sound-generating unit and improving the performance of the sound-generating unit.

[0037] Please refer to Figure 5 Furthermore, the linear conductor 4 is in two sets, and the ends of the two sets of linear conductor 4 are bent and extended in a direction away from each other to form a curved portion 43. The ends of the curved portion 43 are welded to the centering support piece 7 for conduction.

[0038] As can be seen from the above description, the presence of the bend 43 facilitates the welding and connection of the two sets of linear conductors 4 and the centering support 7.

[0039] The first embodiment of this utility model is a sound-generating unit, which is particularly suitable for use in thin and light terminal devices such as mobile phones, tablets, smartwatches, and AR glasses.

[0040] Please refer to Figures 1 to 3 The sound-generating unit includes a frame 1, a yoke 2, a linear conductor 4, a diaphragm assembly 5, and a pair of lateral magnetic assemblies 3. The diaphragm assembly 5 includes an inner fixing part 51, a folded ring part 52, and an outer fixing part 53 connected sequentially from the inside to the outside. The linear conductor 4 is connected to the inner fixing part 51, and the outer fixing part 53 is connected to the frame 1. The lateral magnetic assemblies 3 are fixed on the yoke 2, and the two lateral magnetic assemblies 3 are arranged opposite to each other. A magnetic gap 6 is formed between the two lateral magnetic assemblies 3 to allow the linear conductor 4 to move. That is, the linear conductor 4 is at least partially housed in the magnetic gap 6.

[0041] One end of the linear conductor 4 is connected to the positive terminal of an external power source, and the other end is connected to the negative terminal of an external power source. After the linear conductor 4 is connected to an AC power source, it generates an alternating magnetic field. This alternating magnetic field is superimposed and canceled by the fixed magnetic field formed by the two side magnetic components 3, thereby driving the linear conductor 4 to drive the diaphragm component 5 to vibrate and thus initiating the air to produce sound.

[0042] like Figure 2 and Figure 3 As shown, in order to make the diaphragm assembly 5 more balanced in terms of force, preferably, the sound-generating unit has a planar symmetrical structure.

[0043] like Figure 2 As shown, specifically, the side magnetic assembly 3 includes a side magnet 31 and a side washer 32. The side magnet 31 is located below the side washer 32, and the side magnet 31 connects the side washer 32 and the yoke 2.

[0044] Please combine Figures 2 to 4 The linear conductor 4 includes an inner conductor 41 and an outer sheath 42 covering the inner conductor 41. In some embodiments, the inner conductor 41 can be a single integral metal sheet, while in other embodiments, the inner conductor 41 includes multiple parallel guide wires 411, with the ends of any two guide wires 411 interconnected to form a parallel connection. Optionally, two adjacent guide wires 411 are staggered. In some embodiments, the outer sheath 42 has a raised section 421, which does not contain the guide wires 411. The raised section 421 acts as a skeleton, allowing more guide wires 411 to penetrate into the magnetic gap 6, thereby improving magnetic utilization and enhancing the performance of the sound-generating unit. Furthermore, no additional skeleton is required, thus further simplifying the structure of the sound-generating unit and making it easier to assemble and manufacture.

[0045] like Figure 2 and Figure 3As shown, in one or more embodiments, the number of linear conductors 4 is multiple sets, and adjacent sets of linear conductors 4 are bonded together. Specifically, adjacent sets of linear conductors 4 can be bonded by adhesive, by double-sided adhesive, or by an adhesive layer on the outer surface of the outer sheath 42. In this embodiment, the number of linear conductors 4 is two sets, and the two sets of linear conductors 4 are arranged side by side.

[0046] Please combine Figure 1 and Figure 3 Optionally, the sound-generating unit further includes a centering support 7, which connects the linear conductor 4 to the frame 1. The centering support 7 includes an inner mounting portion 71, a cantilever portion 72, and an outer mounting portion 73 connected in sequence. The outer mounting portion 73 is connected to the frame 1, and the inner mounting portion 71 is connected to the linear conductor 4. In one or more embodiments, the inner mounting portion 71 is provided with an inner solder pad, and the outer mounting portion 73 is provided with an outer solder pad electrically connected to the inner solder pad. The sound-generating unit is electrically connected to an external power supply through the centering support 7, and the linear conductor 4 is soldered to the inner solder pad for conductivity.

[0047] like Figure 1 and Figure 2 As shown, in order to allow the side magnetic component 3 to be set to a larger volume, the basin stand 1 has a clearance window 11, and a part of the side magnetic component 3 is accommodated in the clearance window 11.

[0048] Please refer to Figure 5 The second embodiment of this utility model is a parallel technical solution to the first embodiment. The difference between the two embodiments is that the ends of the two sets of linear conductors 4 are bent and extended in a direction away from each other to form a bent portion 43. The end of the bent portion 43 is welded and connected to the centering support piece 7. The setting of the bent portion 43 can facilitate the welding and connection between the linear conductor 4 and the centering support piece 7, and effectively improve the phenomenon of false welding or spurious welding between the linear conductor 4 and the centering support piece 7 due to the excessive width of the linear conductor 4.

[0049] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sound-generating unit, characterized in that, include Yoke; A pair of lateral magnetic assemblies are disposed on the yoke, and a magnetic gap is formed between the two lateral magnetic assemblies; A linear conductor, at least partially housed within the magnetic gap; A diaphragm assembly that connects to the linear conductor.

2. The sound-generating unit according to claim 1, characterized in that, The lateral magnetic assembly includes a lateral magnet and a lateral washer, the lateral magnet being located below the lateral washer and connecting the lateral washer to the yoke.

3. The sound-generating unit according to claim 1, characterized in that, The linear conductor includes an inner conductor and an outer sheath covering the inner conductor.

4. The sound-generating unit according to claim 3, characterized in that, The inner conductor comprises multiple conductor wires connected in parallel.

5. The sound-generating unit according to claim 4, characterized in that, The two adjacent guidewires are staggered.

6. The sound-generating unit according to claim 3, characterized in that, The linear conductors are in multiple groups, and adjacent groups of linear conductors are bonded together.

7. The sound-generating unit according to claim 1, characterized in that, It also includes a frame and a centering support, the centering support connecting the linear conductor to the frame, and the diaphragm assembly connecting to the frame.

8. The sound-generating unit according to claim 7, characterized in that, The basin stand has a clearance window, and a portion of the side magnetic assembly is accommodated within the clearance window.

9. The sound-generating unit according to claim 7, characterized in that, The linear conductors are in two sets, and the ends of the two sets of linear conductors are bent and extended in a direction away from each other to form a curved section. The ends of the curved sections are welded to the centering support plate for conduction.

10. The sound-generating unit according to claim 1, characterized in that, The sound-generating unit has a planar symmetrical structure.

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