Sound production unit

Abstract

The invention discloses a sound production unit, which comprises a basin stand, magnetic steel, a linear conductor and a diaphragm assembly, and is characterized in that the basin stand comprises a frame body, two opposite sides of the frame body are respectively provided with an L-shaped folding edge, and the L-shaped folding edges and the frame body form an avoiding groove; the magnetic steels are fixedly arranged on two opposite side walls of the two L-shaped folding edges respectively; the linear conductor is located between the two opposite magnetic steels; the vibrating diaphragm assembly is connected with the linear conductor and the frame body and is provided with a folding ring part, and a partial area of the folding ring part corresponds to the avoiding groove. The sound production unit is simple and novel in structure, the linear conductor is adopted to drive the diaphragm assembly to vibrate and produce sound, the occupation of the internal space of the sound production unit is reduced, and the sound production unit can be made smaller; the distance between the magnetic steel and the linear conductor is shortened by the L-shaped folding edge structure on the basin frame, so that the magnetic utilization rate of the magnetic steel is effectively improved, the avoiding groove formed between the L-shaped folding edge and the frame body can effectively avoid the position of the folding ring part, and noise caused by collision between the vibrating diaphragm assembly and the L-shaped folding edge is avoided.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic converter technology, and more particularly 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 space reserved for the installation of sound units is getting smaller and smaller. How to miniaturize the sound units to adapt to increasingly thinner and lighter mobile terminal products is a problem that designers urgently need to solve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a miniature sound-generating unit.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a sound-generating unit, comprising: The basin stand includes a frame, with L-shaped folds on opposite sides of the frame, the L-shaped folds forming clearance grooves with the frame; The magnets are fixed on the opposite side walls of the two L-shaped folds. A linear conductor located between two opposing magnets; A diaphragm assembly, which connects a linear conductor to a frame, has a folded section, a portion of which corresponds to a clearance groove.

[0006] The beneficial effects of this invention 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 occupies much less space inside the sound-generating unit, making the overall volume of the sound-generating unit smaller. The L-shaped folded edge structure on the frame brings the magnet and the linear conductor closer together, thereby effectively improving the magnetic utilization rate of the magnet and allowing the magnet to be made smaller, thus saving the material cost of the sound-generating unit. In addition, the clearance groove formed between the L-shaped folded edge and the frame can effectively avoid the folded ring part, preventing the diaphragm assembly from colliding with the L-shaped folded edge and generating noise. Attached Figure Description

[0007] 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 structure of the bottom cover in the sound-generating unit of Embodiment 1; Figure 6 This is a schematic diagram of the internal structure of the sound-generating unit in Embodiment 2.

[0008] Label Explanation: 1. Sink stand; 11. Frame; 12. L-shaped folded edge; 121. First folded edge; 122. Second folded edge; 13. Clearance groove; 2. Magnet; 3. Linear conductor; 31. Inner conductor; 311. Guide wire; 32. Outer sheath; 33. Bend; 4. Diaphragm assembly; 41. Folded ring section; 5. Wasi; 6. Base cover; 61. End flange; 62. Side flange; 621. Positioning groove; 7. Centering support; 8. Skeleton. Detailed Implementation

[0009] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0010] Please refer to Figures 1 to 3 The sound-generating unit includes: The basin stand 1 includes a frame 11, with L-shaped flanges 12 on opposite sides of the frame 11, and the L-shaped flanges 12 and the frame 11 forming a clearance groove 13. Magnet 2 is fixed on the opposite side walls of the two L-shaped folded edges 12 respectively; A linear conductor 3 is located between two opposing magnets 2; The diaphragm assembly 4 connects the linear conductor 3 and the frame 11, and has a folded ring portion 41, a portion of which corresponds to the clearance groove 13.

[0011] As can be seen from the above description, the beneficial effects of the present invention are as follows: The sound-generating unit has a simple and novel structure. It uses a linear conductor 3 to drive the diaphragm assembly 4 to vibrate and generate sound. Compared with the ring-shaped voice coil structure, the linear conductor 3 occupies much less space inside the sound-generating unit, so that the overall volume of the sound-generating unit can be made smaller. The L-shaped folded edge 12 structure on the frame 1 brings the distance between the magnet 2 and the linear conductor 3 closer, thereby effectively improving the magnetic utilization rate of the magnet 2 and allowing the magnet 2 to be set smaller, thereby saving the raw material cost of the sound-generating unit. In addition, the clearance groove 13 formed between the L-shaped folded edge 12 and the frame 11 can effectively avoid the folded ring part 41, preventing the diaphragm assembly 4 from colliding with the L-shaped folded edge 12 and generating noise.

[0012] Please refer to Figure 2 Furthermore, the L-shaped folded edge 12 includes a first folded edge 121 and a second folded edge 122 that are vertically connected. One end of the first folded edge 121 is connected to the frame 11, and the second folded edge 122 forms the clearance groove 13 between it and the frame 11. The magnet 2 is installed on the side wall of the second folded edge 122 away from the clearance groove 13.

[0013] As can be seen from the above description, the L-shaped folded edge 12 has a simple structure and is easy to process and form.

[0014] Furthermore, the frame 11 and the L-shaped folded edge 12 are integrally formed into a single structure.

[0015] As can be seen from the above description, the frame 11 and the L-shaped folded edge 12 are integrally formed into a single structure, which facilitates the manufacturing of the basin stand 1.

[0016] Please refer to Figure 2 and Figure 4 Furthermore, the linear conductor 3 includes an inner conductor 31 and an outer sheath 32 covering the inner conductor 31.

[0017] As can be seen from the above description, the linear conductor 3 has a simple structure and is easy to manufacture.

[0018] Furthermore, the inner conductor 31 includes multiple guide wires 311 connected in parallel.

[0019] As can be seen from the above description, there are a variety of specific structural forms of the inner conductor 31 to choose from.

[0020] Please refer to Figure 2 Furthermore, the two adjacent guide wires 311 are staggered.

[0021] As can be seen from the above description, the staggered arrangement of the two adjacent conductors 311 can improve the phenomenon of concentrated heat generation in the linear conductor 3.

[0022] Please refer to Figure 2 and Figure 3 Furthermore, it also includes a washer 5, with the washer 5 connected to one end of the magnet 2 near the linear conductor 3.

[0023] As can be seen from the above description, Waste 5 can play a role in magnetic conduction, which is conducive to further improving magnetic utilization.

[0024] Please refer to Figure 2 , Figure 3 and Figure 5 Furthermore, it also includes a bottom cover 6, which is located below the linear conductor 3 and is connected to the magnet 2 and / or the basin stand 1.

[0025] As can be seen from the above description, the bottom cover 6 can protect the linear conductor 3 and at the same time improve the phenomenon of foreign objects intruding into the sound unit.

[0026] Please refer to Figure 3 Furthermore, it also includes a centering support 7, which connects the linear conductor 3 to the basin frame 1.

[0027] As can be seen from the above description, the centering support 7 can correct the polarization of the linear conductor 3, thereby improving the polarization phenomenon of the sound-generating unit.

[0028] Please refer to Figure 6 Furthermore, the linear conductors 3 are in two sets, and the ends of the two sets of linear conductors 3 are bent and extended in a direction away from each other to form a curved portion 33. The ends of the curved portion 33 are welded to the centering support piece 7 for conduction.

[0029] As can be seen from the above description, the presence of the bend 33 facilitates the welding and connection of the two sets of linear conductors 3 and the centering support 7.

[0030] Embodiment 1 of the present invention is as follows: Please refer to Figures 1 to 3 The sound-generating unit includes a frame 1, magnets 2, a linear conductor 3, and a diaphragm assembly 4. The frame 1 includes a body 11, with L-shaped flanges 12 on opposite sides of the body 11. The L-shaped flanges 12 and the body 11 form a clearance groove 13. The magnets 2 are fixed on opposite side walls of the two L-shaped flanges 12. The linear conductor 3 is located between the two opposing magnets 2. The magnetic poles of the magnets 2 on both sides of the linear conductor 3 are different at their closest ends. That is, when the end of the magnet 2 on one side of the linear conductor 3 is the N pole, the end of the magnet 2 on the other side of the linear conductor 3 is the S pole. The diaphragm assembly 4 connects the linear conductor 3 and the body 11. The diaphragm assembly 4 has a folded ring portion 41. A portion of the folded ring portion 41 corresponds to the clearance groove 13. The clearance groove 13 not only reduces the overall weight of the sound-generating unit but also allows for clearance of the folded ring portion 41.

[0031] One end of the linear conductor 3 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 3 is connected to an AC power source, the linear conductor 3 generates an alternating magnetic field. The alternating magnetic field is superimposed and canceled by the fixed magnetic field generated by the magnet 2 in the sound-generating unit, thereby causing the linear conductor 3 to drive the diaphragm assembly 4 to vibrate and drive the air to produce sound.

[0032] like Figure 2As shown, in one or more embodiments, the L-shaped folded edge 12 includes a first folded edge 121 and a second folded edge 122 that are vertically connected. One end of the first folded edge 121 is connected to the frame 11, and the second folded edge 122 forms the clearance groove 13 between itself and the frame 11. The magnet 2 is installed on the side wall of the second folded edge 122 away from the clearance groove 13. In a preferred embodiment, the frame 11 and the L-shaped folded edge 12 are integrally formed, meaning that the basin stand 1 can be an integrally injection-molded structure or a metal structural component integrally formed by bending.

[0033] like Figure 2 and Figure 4 As shown, the linear conductor 3 includes an inner conductor 31 and an outer sheath 32 covering the inner conductor 31. In some embodiments, the inner conductor 31 can be an integral metal sheet, while in other embodiments, the inner conductor 31 includes multiple parallel guide wires 311, and the ends of any two guide wires 311 are connected to each other for conduction. Optionally, two adjacent guide wires 311 are staggered.

[0034] To improve magnetic utilization, this sound-generating unit also includes a washer 5, and the washer 5 is connected to one end of the magnet 2 near the linear conductor 3.

[0035] like Figure 2 , Figure 3 and Figure 5 As shown, optionally, the sound-generating unit also includes a base cover 6, which is located below the linear conductor 3. The base cover 6 connects the magnet 2 and / or the frame 1. To improve the structural stability of the sound-generating unit, the base cover 6 connects both the magnet 2 and the frame 1. Specifically, the base cover 6 is positioned to correspond to the gap between the two L-shaped flanges 12. The two ends of the base cover 6 have end flanges 61 that connect to the frame 11. The two sides of the base cover 6 each have side flanges 62 that bend and extend toward the diaphragm assembly 4. The middle of the side flanges 62 has a positioning groove 621 for positioning the magnet 2. The bottom surface and the two opposite inner walls of the positioning groove 621 are respectively bonded and fixed to the magnet 2.

[0036] like Figure 2 As shown, in some embodiments, the sound-generating unit further includes a frame 8, which connects the linear conductor 3 and the diaphragm assembly 4 respectively. That is, the linear conductor 3 is indirectly connected to the diaphragm assembly 4 through the frame 8, which allows the linear conductor 3 to penetrate deeper into the magnetic gap, thereby increasing the BL value of the sound-generating unit.

[0037] like Figure 3As shown, in one or more embodiments, the sound-generating unit further includes a centering support 7, which connects the linear conductor 3 and the frame 1. The centering support 7 includes an inner mounting portion, a cantilever portion, and an outer mounting portion connected in sequence. The outer mounting portion is connected to the frame 11, and the inner mounting portion is connected to the linear conductor 3.

[0038] Please refer to Figure 6 Embodiment 2 of the present invention is a parallel technical solution to Embodiment 1. The difference between Embodiment 1 and Embodiment 2 is that the number of linear conductors 3 is two sets. The ends of the two sets of linear conductors 3 are bent and extended in a direction away from each other to form a bent portion 33. The ends of the bent portion 33 are welded and connected to the centering support piece 7. The setting of the bent portion 33 can facilitate the welding and connection between the linear conductor 3 and the centering support piece 7, and effectively improve the phenomenon of false welding or spurious welding between the linear conductor 3 and the centering support piece 7 due to the excessive width of the linear conductor 3.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A sound-generating unit, characterized in that, include The basin stand includes a frame, with L-shaped folds on opposite sides of the frame, the L-shaped folds and the frame forming a clearance groove; The magnets are fixed on the opposite side walls of the two L-shaped folds. A linear conductor located between two opposing magnets; A diaphragm assembly, which connects a linear conductor to a frame, has a folded section, a portion of which corresponds to a clearance groove.

2. The sound-generating unit according to claim 1, characterized in that, The L-shaped fold includes a first fold and a second fold that are vertically connected. One end of the first fold is connected to the frame, and the second fold forms the clearance groove between the second fold and the frame. The magnet is installed on the side wall of the second fold away from the clearance groove.

3. The sound-generating unit according to claim 1, characterized in that, The frame and the L-shaped fold are integrally formed into a single structure.

4. 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.

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

6. The sound-generating unit according to claim 5, characterized in that, The two guide wires that are adjacent to each other are staggered.

7. The sound-generating unit according to claim 1, characterized in that, It also includes a washer, with the washer connected to one end of the magnet near the linear conductor.

8. The sound-generating unit according to claim 1, characterized in that, It also includes a base cover located below the linear conductor, the base cover being connected to the magnet and / or the basin stand.

9. The sound-generating unit according to claim 1, characterized in that, It also includes a centering support plate, which connects the linear conductor to the frame.

10. The sound-generating unit according to claim 9, 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.

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