Sound unit

Abstract

This utility model discloses a sound-generating unit, including a magnetic circuit assembly, a bass resonator, and multiple treble resonators. The magnetic circuit assembly includes an upper yoke, a lower yoke, and a central magnetic structure and a side magnetic structure respectively disposed on the lower yoke. The central magnetic structure includes a central washer, with treble magnetic structures disposed on both sides of the central washer. The treble magnetic structures include a ring magnet and a treble magnet located in the hollow region of the ring magnet. The magnetic poles of the ring magnets on both sides of the central washer face opposite directions, and a treble magnetic gap is formed between the treble magnet and its corresponding ring magnet. The upper and lower yokes each have openings corresponding to the treble magnetic structures. Treble resonators are installed at the openings of both the upper and lower yokes. Each treble resonator includes a treble diaphragm assembly and a treble voice coil. The treble diaphragm assembly closes the openings, and the treble voice coil is located in the treble magnetic gap and connected to the treble diaphragm assembly. This sound-generating unit achieves high and low frequency crossover and has a superior sound production effect.

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] As electronic devices such as mobile phones and tablets become smaller and thinner, the installation space left for sound units is getting smaller and smaller. However, at the same time, the performance requirements for sound units are getting higher and higher. How to improve the performance of sound units under the constraints of product structure and size has always been the research and development direction of practitioners.

[0003] Some drivers integrate a tweeter and a woofer into one unit to achieve high and low frequency crossover. However, the tweeter occupies a lot of the magnet space of the woofer, resulting in unsatisfactory bass performance. At the same time, the treble performance of a single tweeter architecture is also not good enough. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a sound unit that can achieve high and low frequency crossover and has a good sound output effect.

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

[0006] A magnetic circuit assembly includes an upper yoke, a lower yoke, and a central magnetic structure and a side magnetic structure respectively disposed on the lower yoke. The side magnetic structure includes a lower side magnet, a side washer, and an upper side magnet connected sequentially from bottom to top. The lower side magnet is connected to the lower yoke, and the upper side magnet is connected to the upper yoke. The magnetic poles of the lower and upper side magnets face opposite directions. A low-frequency magnetic gap is formed around the central magnetic structure. The central magnetic structure includes a central washer, and high-frequency magnetic structures are respectively disposed on both sides of the central washer. The high-frequency magnetic structure includes a ring magnet and a high-frequency magnet located in the hollow area of ​​the ring magnet. The magnetic poles of the ring magnets on both sides of the central washer face opposite directions. A high-frequency magnetic gap is formed between the high-frequency magnet and the corresponding ring magnet. The upper and lower yokes each have openings corresponding to the high-frequency magnetic structures.

[0007] Multiple tweeter units are installed at the openings of the upper and lower yokes. Each tweeter unit includes a tweeter diaphragm assembly and a tweeter voice coil. The tweeter diaphragm assembly closes the openings, and the tweeter voice coil is located in the tweeter magnetic gap and connected to the tweeter diaphragm assembly.

[0008] The bass resonator includes a bass voice coil, a frame, and a bass diaphragm assembly. The bass diaphragm assembly includes an inner fixing part, an inner folded surround part, a transition part, an outer folded surround part, and an outer fixing part connected in sequence from the inside to the outside. The inner fixing part is connected to the magnetic circuit assembly. The frame includes an inner mounting part, a connecting part, and an outer mounting part connected in sequence. The inner mounting part is connected to the bass voice coil, and the outer mounting part is connected to the transition part.

[0009] In one embodiment, the number of central magnetic structures is one or more. When the number of central magnetic structures is multiple, the number of bass voice coils is multiple and corresponds one-to-one with the central magnetic structures. The number of treble vibration units is twice the number of central magnetic structures.

[0010] In one embodiment, two adjacent bass voice coils are bonded and fixed together.

[0011] In one embodiment, the tweeter magnetic structure further includes a tweeter washer, with the tweeter washer connected to the side of the tweeter magnet away from the central washer.

[0012] In one embodiment, the edge washer corresponds to the center washer.

[0013] In one embodiment, the connecting portion has a clearance area for avoiding the inner fold ring.

[0014] In one embodiment, the connecting portion includes a plurality of stepped structures.

[0015] In one embodiment, a reinforcing plate is provided on the connecting portion.

[0016] In one embodiment, a centering support plate is further included, the centering support plate comprising an inner connecting portion, a cantilever portion and an outer connecting portion connected in sequence, the inner connecting portion being connected to the bass voice coil.

[0017] In one embodiment, the inner joint portion of the centering support is provided with an inner solder pad that is electrically connected to the bass voice coil, and the outer joint portion is provided with an outer solder pad that is electrically connected to the inner solder pad.

[0018] The beneficial effects of this invention are as follows: The novel structure of this sound unit enables high and low frequency crossover. The overall volume of the magnetic circuit assembly is large, and during vibration, both the upper and lower parts of the bass voice coil move within the bass magnetic gap, without exceeding it, thus improving the bass performance of the sound unit. Furthermore, the staggered arrangement of the bass voice coil and bass diaphragm assembly prevents the bass diaphragm assembly from occupying the space above the bass voice coil, allowing the bass voice coil to vibrate with a larger amplitude while maintaining a slim profile, further enhancing the low-frequency response. Moreover, this sound unit incorporates multiple tweeters, effectively improving its high-frequency performance compared to existing sound units with a single tweeter architecture. In short, this sound unit achieves high and low frequency crossover while delivering superior sound quality. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of the sound-generating unit in Embodiment 1. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the sound-generating unit in Embodiment 1. Figure 2 ;

[0022] Figure 3 A cross-sectional view of the sound-generating unit in Embodiment 1 Figure 1 ;

[0023] Figure 4 A cross-sectional view of the sound-generating unit in Embodiment 1 Figure 2 ;

[0024] Figure 5 This is a schematic diagram of a portion of the structure of the sound-generating unit in Embodiment 1.

[0025] Explanation of icon numbers:

[0026] 1. Pot stand;

[0027] 2. Magnetic circuit assembly; 21. Upper yoke; 22. Lower yoke; 23. Central magnetic structure; 231. Central washer; 232. Ring magnet; 233. Treble magnet; 234. Treble washer; 24. Side magnetic structure; 241. Lower side magnet; 242. Side washer; 243. Upper side magnet;

[0028] 3. Tweeter resonator; 31. Tweeter diaphragm assembly; 32. Tweeter voice coil;

[0029] 4. Bass resonator; 41. Bass voice coil; 42. Frame; 421. Inner mounting part; 422. Connecting part; 423. Outer mounting part; 43. Bass diaphragm assembly; 431. Inner fixing part; 432. Inner surround part; 433. Transition part; 434. Outer surround part; 435. Outer fixing part; 44. Reinforcing plate;

[0030] 51. Low-frequency magnetic gap; 52. High-frequency magnetic gap;

[0031] 6. Stabilizing support. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Furthermore, if the word "and / or" appears throughout the text, it means that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, 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.

[0037] 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.

[0038] Example 1

[0039] Please refer to Figures 1 to 5The first embodiment of this utility model is as follows: a sound-generating unit, including a frame 1, a magnetic circuit assembly 2, a bass resonator 4, and multiple treble resonators 3. The magnetic circuit assembly 2 includes an upper yoke 21, a lower yoke 22, and a central magnetic structure 23 and a side magnetic structure 24 respectively disposed on the lower yoke 22. The upper yoke 21 is located above and parallel to the lower yoke 22. The lower yoke 22 is fixedly connected to the frame 1. The side magnetic structure 24 includes a lower side magnet 241, a side washer 242, and an upper side magnet 243 connected sequentially from bottom to top. The lower magnet 241 is connected to the lower yoke 22, and the upper magnet 243 is connected to the upper yoke 21. The magnetic poles of the lower magnet 241 and the upper magnet 243 face opposite directions. A bass magnetic gap 51 is formed around the central magnetic structure 23. The central magnetic structure 23 includes a central washer 231 to improve the bass response. For optimal utilization, the side washer 242 corresponds to the center washer 231. The center washer 231 has tweeter magnetic structures on both sides, each including annular magnet 232 and a tweeter magnet 233 located in the hollow region of the annular magnet 232. The magnetic poles of the annular magnets 232 on both sides of the center washer 231 face opposite directions, as do the magnetic poles of the tweeter magnets 233 on both sides of the center washer 231. The top of the annular magnet 232 above the center washer 231 is fixedly connected to the upper yoke 21, and the bottom of the annular magnet 232 below the center washer 231 is fixedly connected to the lower yoke 22. A tweeter magnetic gap 52 is formed between the tweeter magnet 233 and its corresponding annular magnet 232. The upper yoke 21 and lower yoke 22 each have openings corresponding to the tweeter magnetic structures.

[0040] Both the upper yoke 21 and the lower yoke 22 have a tweeter 3 installed at their respective openings. The tweeter 3 includes a tweeter diaphragm assembly 31 and a tweeter voice coil 32. The tweeter voice coil 32 is located in the tweeter magnetic gap 52 and is connected to the tweeter diaphragm assembly 31. The tweeter diaphragm assembly 31 closes the opening. That is, the outer edge of the tweeter diaphragm assembly 31 installed at the opening of the upper yoke 21 is sealed to the upper yoke 21, and the outer edge of the tweeter diaphragm assembly 31 installed at the opening of the lower yoke 22 is sealed to the lower yoke 22.

[0041] The bass resonator 4 includes a bass voice coil 41, a frame 42, and a bass diaphragm assembly 43. The bass diaphragm assembly 43 includes an inner fixing part 431, an inner folded ring part 432, a transition part 433, an outer folded ring part 434, and an outer fixing part 435 connected sequentially from the inside to the outside. The outer fixing part 435 is connected to the frame 1, and the inner fixing part 431 is connected to the magnetic circuit assembly 2. Preferably, the inner fixing part 431 is connected to the upper yoke 21. The frame 42 includes an inner mounting part 421, a connecting part 422, and an outer mounting part 423 connected sequentially. The inner mounting part 421 is connected to the bass voice coil 41, and the outer mounting part 423 is connected to the transition part 433.

[0042] The number of central magnetic structures 23 can be one or more. When there are multiple central magnetic structures 23, the number of bass voice coils 41 is also multiple, corresponding one-to-one with each central magnetic structure 23. The number of treble vibration units 3 is twice the number of central magnetic structures 23. In this embodiment, there are two central magnetic structures 23 and two bass voice coils 41, and four treble vibration units. That is, the sound-generating unit in this embodiment has one bass unit and four treble units, which is beneficial for simultaneously improving the bass and treble effects of the sound-generating unit. To improve the structural stability of the sound-generating unit and reduce the risk of bass voice coils 41 falling off, optionally, two adjacent bass voice coils 41 can be glued and fixed together.

[0043] In one or more embodiments, the central magnetic structure 23 is a planar symmetrical structure, which can balance the force on the sound-generating unit when the tweeter voice coil 32 vibrates, and improve the phenomenon of vibration of the sound-generating unit itself due to reaction force.

[0044] To improve the treble effect, more magnetic field lines are directed to the treble magnetic gap 52. Preferably, the treble magnetic structure also includes a treble washer 234, and the side of the treble magnet 233 away from the central washer 231 is connected to the treble washer 234.

[0045] The connecting portion 422 has a clearance area for avoiding the inner folded ring, thereby preventing interference between the connecting portion 422 and the inner folded ring portion 432 and the generation of noise; in this embodiment, the connecting portion 422 includes a plurality of stepped structures, and the empty area above the stepped structure becomes the clearance area.

[0046] To improve the structural strength of the frame 42 and reduce the risk of deformation of the frame 42, it is preferable that the connecting part 422 is provided with a reinforcing plate 44, and preferably the material hardness of the reinforcing plate 44 is greater than or equal to the material hardness of the frame 42.

[0047] The sound-generating unit also includes a centering bracket 6, which comprises an inner connecting part, a cantilever part, and an outer connecting part connected in sequence. The outer connecting part is connected to the frame 1, and the inner connecting part is connected to the bass voice coil 41. The centering bracket 6 can correct the deviation of the bass voice coil 41, which helps to further improve the bass effect of the sound-generating unit.

[0048] In one or more embodiments, the centering support 6 is an FPC board, the inner joint portion of the centering support 6 is provided with an inner solder pad that is electrically connected to the bass voice coil 41, and the outer joint portion is provided with an outer solder pad that is electrically connected to the inner solder pad. An external power supply supplies power to the bass voice coil 41 through the centering support 6.

[0049] 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 emitting unit, characterized by: include A magnetic circuit assembly includes an upper yoke, a lower yoke, and a central magnetic structure and a side magnetic structure respectively disposed on the lower yoke. The side magnetic structure includes a lower side magnet, a side washer, and an upper side magnet connected sequentially from bottom to top. The lower side magnet is connected to the lower yoke, and the upper side magnet is connected to the upper yoke. The magnetic poles of the lower and upper side magnets face opposite directions. A low-frequency magnetic gap is formed around the central magnetic structure. The central magnetic structure includes a central washer, and high-frequency magnetic structures are respectively disposed on both sides of the central washer. The high-frequency magnetic structure includes a ring magnet and a high-frequency magnet located in the hollow area of ​​the ring magnet. The magnetic poles of the ring magnets on both sides of the central washer face opposite directions. A high-frequency magnetic gap is formed between the high-frequency magnet and the corresponding ring magnet. The upper and lower yokes each have openings corresponding to the high-frequency magnetic structures. Multiple tweeter units are installed at the openings of the upper and lower yokes. Each tweeter unit includes a tweeter diaphragm assembly and a tweeter voice coil. The tweeter diaphragm assembly closes the openings, and the tweeter voice coil is located in the tweeter magnetic gap and connected to the tweeter diaphragm assembly. The bass resonator includes a bass voice coil, a frame, and a bass diaphragm assembly. The bass diaphragm assembly includes an inner fixing part, an inner folded surround part, a transition part, an outer folded surround part, and an outer fixing part connected in sequence from the inside to the outside. The inner fixing part is connected to the magnetic circuit assembly. The frame includes an inner mounting part, a connecting part, and an outer mounting part connected in sequence. The inner mounting part is connected to the bass voice coil, and the outer mounting part is connected to the transition part.

2. The sound producing unit of claim 1, wherein: The number of central magnetic structures can be one or more. When the number of central magnetic structures is multiple, the number of bass voice coils is multiple and corresponds one-to-one with the central magnetic structures. The number of treble vibration units is twice the number of central magnetic structures.

3. The sound producing unit of claim 2, wherein: The two adjacent bass voice coils are glued and fixed together.

4. The sound producing unit of claim 1, wherein: The tweeter magnetic structure also includes a tweeter washer, and the side of the tweeter magnet away from the central washer is connected to the tweeter washer.

5. The sound producing unit of claim 1, wherein: The peripheral washer corresponds to the central washer.

6. The sound producing unit of claim 1, wherein: The connecting portion has a clearance area for avoiding the inner fold ring.

7. The sound producing unit of claim 6, wherein: The connecting part includes several stepped structures.

8. The sound producing unit of claim 7, wherein: The connecting part is provided with a reinforcing plate.

9. The sound producing unit of claim 1, wherein: It also includes a centering support, which comprises an inner connecting part, a cantilever part, and an outer connecting part connected in sequence, wherein the inner connecting part is connected to the bass voice coil.

10. The sound producing unit of claim 9, wherein: The inner joint of the centering support is provided with an inner solder pad that is electrically connected to the bass voice coil, and the outer joint is provided with an outer solder pad that is electrically connected to the inner solder pad.

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