Sound production unit

Abstract

The utility model discloses a sounding unit, including basin stand, magnetic circuit system, conducting centering disk and a plurality of voice coil, magnetic circuit system is connected basin stand, magnetic circuit system includes yoke, and the central magnetic subassembly and first side magnetic structure that are respectively provided on yoke, central magnetic subassembly is located between at least one group of two oppositely arranged first side magnetic structure, the central magnetic assembly comprises a plurality of central magnetic structures which are arranged side by side, the yoke is provided with a window, two opposite side edges of the window are respectively connected with flanges, and the flanges are provided with openings; the voice coils and the central magnetic structures are arranged in a one-to-one correspondence manner, and partial areas of the voice coils are located between the central magnetic structures and the flanges; the conduction centering disk comprises an inner mounting part, a cantilever part and an outer mounting part which are connected in sequence, a partial area of the cantilever part corresponds to the window and is located between the two flanges, one end of the inner mounting part penetrates through the opening and is fixedly connected with the voice coil, and the outer mounting part is connected with the basin stand. The sound production unit has high performance.

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] Sound-generating units are widely used in mobile phones, headphones, and other terminal electronic devices, primarily for making calls, playing music, and playing videos. As users' demands for terminal electronic devices increase, the performance requirements for sound-generating units also rise.

[0003] To improve magnet utilization, achieve stronger driving force, enhance the sensitivity of the speaker unit, and increase loudness, multi-voice coil solutions have emerged on the market. However, to improve speaker unit performance, existing speaker units often employ large voice coils and large amplitude architectures. Some speaker units incorporate a conductive centering support, which connects the voice coil to the external power supply and corrects the voice coil's roll vibration. In current technology, the conductive centering support is generally located outside the voice coil. When a miniature loudspeaker uses a large amplitude design, the conductive centering support must have sufficient overhang length to avoid stress concentration and wire breakage. However, in miniature loudspeakers using a large voice coil architecture, the space outside the voice coil is insufficient, making it impossible to place a side magnet or a conductive centering support, thus limiting further performance improvements. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a high-performance multi-voice coil architecture sound unit.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0006] Sink stand;

[0007] A magnetic circuit system is connected to the basin stand. The magnetic circuit system includes a yoke and a central magnetic assembly and a first side magnetic structure respectively disposed on the yoke. The central magnetic assembly is located between at least one set of two oppositely disposed first side magnetic structures. The central magnetic assembly includes a plurality of central magnetic structures arranged side by side. The yoke is provided with a window. Two opposite sides of the window are respectively connected to a flange. The flange is provided with an opening.

[0008] Multiple voice coils are provided, each corresponding to a central magnetic structure, with a portion of the voice coil located between the central magnetic structure and the flange.

[0009] The conductive centering support includes an inner mounting part, a cantilever part, and an outer mounting part connected in sequence. A portion of the cantilever part corresponds to the opening and is located between the two flanges. One end of the inner mounting part passes through the opening and is fixedly connected to the voice coil. The outer mounting part is connected to the frame. The inner mounting part is provided with an inner pad that is conductive to the voice coil, and the outer mounting part is provided with an outer pad that is conductive to the inner pad.

[0010] In one embodiment, the conductive centering support has multiple inner mounting portions, each corresponding to a voice coil.

[0011] In one embodiment, the inner mounting portion is connected to two cantilever portions, each cantilever portion is connected to an outer mounting portion, one outer mounting portion is fixed to one side frame of the basin stand, and the other outer mounting portion is fixed to the opposite side frame of the basin stand.

[0012] In one embodiment, the flange is a folded edge formed by bending a portion of the yoke.

[0013] In one embodiment, the cantilever portion includes a straight section and a curved section connected together, the straight section being connected to the inner mounting portion, the curved section being connected to the outer mounting portion, the straight section being located between the two flanges, and the curved section being located outside the two flanges.

[0014] In one embodiment, the conductive centering support is a planar symmetrical structure or a central symmetrical structure.

[0015] In one embodiment, the opening is located at the center of the flange.

[0016] In one embodiment, the magnetic circuit system further includes a second side magnetic structure disposed on the yoke and located outside the end of the voice coil.

[0017] In one embodiment, the first side magnetic structure includes a first side washer and a first side magnet connecting the first side washer and the yoke; the second side magnetic structure includes a second side washer and a second side magnet connecting the second side washer and the yoke; the first side magnet and the adjacent second side magnet are in contact with each other, or the first side magnet and the adjacent second side magnet are integrally formed into a single structure.

[0018] In one embodiment, the first washer and the adjacent second washer are integrally formed as a single structure.

[0019] The beneficial effects of this invention are as follows: The sound-generating unit has a novel structure, with the optimization of the magnetic circuit system and the layout of the conducting and centering support plates as the key breakthrough. In terms of structural layout, on the one hand, by setting windows and flanges on the yoke, the flanges and the central magnetic structure form a partial magnetic circuit. The window space is cleverly utilized to place a portion of the cantilevered part of the conducting and centering support plate between the two flanges, and the opening allows for precise connection between the inner mounting part and the voice coil. This layout not only solves the problem of insufficient space outside the voice coil in traditional sound-generating units with large voice coil architectures, but also avoids the difficulty in placing the conducting and centering support plates due to space constraints and the compression of the side magnetic structure space, thus making it possible to increase the overall volume of the magnetic circuit system. On the other hand, the increase in the overall volume of the magnetic circuit system allows for an increase in the magnetic field strength of the sound-generating unit, thereby enhancing the driving force and improving sensitivity and loudness. Furthermore, with proper arrangement, the conductive centering support can stably conduct the voice coil to the external power supply and accurately correct the voice coil deviation, effectively suppressing the voice coil rolling phenomenon. Under large amplitude conditions, the probability of wire breakage is low, ensuring the audio performance of the sound unit. This optimization enables the sound unit to exhibit a clearer and fuller sound effect in scenarios such as playing music and making calls, fully meeting users' needs for high-performance sound units in terminal electronic devices. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the sound-generating unit according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the sound-generating unit after the diaphragm assembly is hidden in Embodiment 1 of this utility model;

[0023] Figure 3 This is a cross-sectional view of the sound-generating unit according to Embodiment 1 of this utility model.

[0024] Explanation of icon numbers:

[0025] 1. Pot stand;

[0026] 2. Magnetic circuit system; 21. Yoke; 211. Window; 212. Flanged edge; 213. Opening; 22. Central magnetic assembly; 221. Central magnetic structure; 2211. Central magnet; 2212. Central washer; 23. First side magnetic structure; 231. First side magnet; 232. First side washer; 24. Second side magnetic structure; 241. Second side magnet; 242. Second side washer;

[0027] 3. Diaphragm assembly;

[0028] 4. Conductor centering support; 41. Inner mounting part; 42. Cantilever part; 421. Straight extension section; 422. Bending section; 43. Outer mounting part;

[0029] 5. Voice coil. Detailed Implementation

[0030] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0034] Furthermore, if the meaning of "and / or" appears throughout the text, it refers to three parallel solutions. For example, "and / or" includes solution 1, solution 2, and solution 3, which simultaneously satisfy the above conditions. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Example 1

[0037] Please refer to Figures 1 to 3 The first embodiment of this utility model is as follows: a sound generating unit, including a frame 1, a magnetic circuit system 2, a diaphragm assembly 3, a conductive centering support 4, and multiple voice coils 5, wherein the multiple voice coils 5 are connected in series or in parallel, preferably in series; the magnetic circuit system 2 is connected to the frame 1, and the magnetic circuit system 2 includes a yoke 21 and a central magnetic assembly 22 and a first side magnetic structure 23 respectively disposed on the yoke 21. The central magnetic assembly 22 is located between at least one set of two oppositely disposed first side magnetic structures 23. The central magnetic assembly 22 includes multiple central magnetic structures 221 arranged side by side. The yoke 21 is provided with an opening 211, and two opposite sides of the opening 211 are respectively connected with flanges 212. The flanges 212 are provided with openings 213. In order to facilitate the processing and forming of the flanges 212, it is preferred that the flanges 212 are folded edges formed by bending a part of the yoke 21.

[0038] The diaphragm assembly 3 connects the voice coil 5 to the frame 1. The voice coil 5 and the central magnetic structure 221 are arranged in a one-to-one correspondence. Specifically, the central magnetic structure 221 is arranged in the hollow area of ​​the voice coil 5. A part of the voice coil 5 is located between the central magnetic structure 221 and the flange 212. The flange 212 can play a magnetic guiding role. The yoke 21, the flange 212 and the central magnetic structure 221 near the flange 212 can form a magnetic circuit. One side of the voice coil 5 is in the magnetic circuit.

[0039] The conductive centering support 4 includes an inner mounting part 41, a cantilever part 42, and an outer mounting part 43 connected in sequence. A portion of the cantilever part 42 is provided corresponding to the opening 211 and located between the two flanges 212. One end of the inner mounting part 41 passes through the opening 213 and is fixedly connected to the voice coil 5. The outer mounting part 43 is connected to the frame 1. The inner mounting part 41 is provided with an inner solder pad that is conductive to the voice coil 5, and the outer mounting part 43 is provided with an outer solder pad that is conductive to the inner solder pad.

[0040] In one or more embodiments, the conductive centering support 4 has a plurality of inner mounting portions 41, each corresponding to a voice coil 5. In other embodiments, the inner mounting portion 41 may also be fixedly connected to two adjacent voice coils 5 simultaneously.

[0041] To ensure the corrective effect of the centering support 4, in some embodiments, the inner mounting portion 41 is connected to two cantilever portions 42, each cantilever portion 42 is connected to an outer mounting portion 43, one outer mounting portion 43 is fixed to one side frame of the frame 1, and the other outer mounting portion 43 is fixed to the opposite side frame of the frame 1. In this embodiment, there are two voice coils 5, and the centering support 4 is approximately I-shaped. In other embodiments, the number of voice coils 5 can be three, four, or more.

[0042] In detail, the cantilever portion 42 includes a connected straight section 421 and a curved section 422. The straight section 421 connects to the inner mounting portion 41, and the curved section 422 connects to the outer mounting portion 43. The straight section 421 is located between the two flanges 212, and the curved section 422 is located outside the two flanges 212. Placing the curved section outside the two flanges 212 allows for a smaller distance between the two flanges 212, which is beneficial for miniaturizing the sound-generating unit.

[0043] To balance the force on the voice coil 5, the conducting centering support 4 is a planar symmetrical structure or a central symmetrical structure.

[0044] In this embodiment, the flange 212 has only one opening 213, and preferably the opening 213 is located in the center of the flange 212. In other embodiments, the flange 212 may have multiple openings 213, in which case each opening 213 may be provided with the inner mounting portion 41.

[0045] To increase the overall volume of the magnetic circuit system 2 and further improve the performance of the sound-generating unit, the magnetic circuit system 2 also includes a second side magnetic structure 24. The second side magnetic structure 24 is disposed on the yoke 21 and located outside the end of the voice coil 5. The second side magnetic structure 24 corresponds to the end of the central magnetic structure 221, and the magnetic poles of the second side magnetic structure 24 and its corresponding central magnetic structure 221 are opposite in orientation.

[0046] In detail, the central magnetic structure 221 includes a central washer 2212 and a central magnet 2211 connecting the central washer 2212 and the yoke 21; the first side magnetic structure 23 includes a first side washer 232 and a first side magnet 231 connecting the first side washer 232 and the yoke 21; the second side magnetic structure 24 includes a second side washer 242 and a second side magnet 241 connecting the second side washer 242 and the yoke 21; preferably, the first side magnet 231 and the adjacent second side magnet 241 are in contact with each other, or the first side magnet 231 and the adjacent second side magnet 241 are integrally formed. This not only effectively increases the total volume of the magnets in the magnetic circuit system 2, but also increases the effective length of the voice coil 5 in the magnetic gap, that is, increases the BL value of the sound-producing unit, allowing the performance of the sound-producing unit to be further improved.

[0047] In one or more embodiments, the first side washer 232 and the adjacent second side washer 242 are integrally formed as a single structure, which facilitates the manufacturing of the sound-generating unit. Optionally, the frame 1 is fixedly connected to the first side washer 232 and the second side washer 242 respectively.

[0048] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A sound-generating unit, characterized in that: include Sink stand; A magnetic circuit system is connected to the basin stand. The magnetic circuit system includes a yoke and a central magnetic assembly and a first side magnetic structure respectively disposed on the yoke. The central magnetic assembly is located between at least one set of two oppositely disposed first side magnetic structures. The central magnetic assembly includes a plurality of central magnetic structures arranged side by side. The yoke is provided with a window. Two opposite sides of the window are respectively connected to a flange. The flange is provided with an opening. Multiple voice coils are provided, each corresponding to a central magnetic structure, with a portion of the voice coil located between the central magnetic structure and the flange. The conductive centering support includes an inner mounting part, a cantilever part, and an outer mounting part connected in sequence. A portion of the cantilever part corresponds to the opening and is located between the two flanges. One end of the inner mounting part passes through the opening and is fixedly connected to the voice coil. The outer mounting part is connected to the frame. The inner mounting part is provided with an inner pad that is conductive to the voice coil, and the outer mounting part is provided with an outer pad that is conductive to the inner pad.

2. The sound-generating unit according to claim 1, characterized in that: The conductive centering support has multiple internal mounting parts, and each internal mounting part is configured to correspond to a voice coil.

3. The sound-generating unit according to claim 1, characterized in that: The inner mounting part is connected to two cantilever parts, and each cantilever part is connected to an outer mounting part. One outer mounting part is fixed to one side frame of the basin stand, and the other outer mounting part is fixed to the opposite side frame of the basin stand.

4. The sound-generating unit according to claim 1, characterized in that: The flange is a folded edge formed by bending a portion of the yoke.

5. The sound-generating unit according to claim 1, characterized in that: The cantilever section includes a straight section and a curved section connected together. The straight section is connected to the inner mounting section, and the curved section is connected to the outer mounting section. The straight section is located between the two flanges, and the curved section is located outside the two flanges.

6. The sound-generating unit according to claim 1, characterized in that: The conductive centering support is a planar symmetrical structure or a central symmetrical structure.

7. The sound-generating unit according to claim 1, characterized in that: The opening is located in the center of the flange.

8. The sound-generating unit according to claim 1, characterized in that: The magnetic circuit system further includes a second side magnetic structure, which is disposed on the yoke and located outside the end of the voice coil.

9. The sound-generating unit according to claim 8, characterized in that: The first side magnetic structure includes a first side washer and a first side magnet connecting the first side washer and the yoke; the second side magnetic structure includes a second side washer and a second side magnet connecting the second side washer and the yoke; the first side magnet and the second side magnet adjacent to it are in contact with each other, or the first side magnet and the second side magnet adjacent to it are integrally formed into a single structure.

10. The sound-generating unit according to claim 9, characterized in that: The first washer and the adjacent second washer are integrally formed into a single structure.

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