Miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker, which comprises a frame, a magnetic circuit assembly, a bass vibration assembly and a first treble vibration assembly, the magnetic circuit assembly comprises a lower yoke, a central magnetic structure, a side magnetic structure, an upper yoke and a first treble magnetic structure, and the central magnetic structure comprises a lower central magnetic steel, a central washer and an upper central magnetic steel which are sequentially arranged from bottom to top. The lower center magnetic steel is connected with the lower yoke, the upper center magnetic steel is connected with the upper yoke, the two opposite sides of the center magnetic structure are correspondingly provided with side magnetic structures respectively to form a bass magnetic gap, each side magnetic structure comprises a lower side magnetic steel, a side washer and an upper side magnetic steel which are sequentially arranged from bottom to top, the lower side magnetic steel is connected with the lower yoke, and the upper side magnetic steel is connected with the upper yoke; the upper central magnetic steel is provided with a first installation through hole, and the upper yoke is provided with a first window communicated with the first installation through hole. The miniature loudspeaker is novel in structure, can realize ultra-thinness and treble and bass frequency division, is good in sound effect, and is suitable for electronic equipment with single-side sound production.

Description

Miniature speaker Technical Field

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

[0002] Miniature speakers are widely used in portable electronic devices such as mobile phones, laptops, and hearing aids. With the rapid development of these portable electronic devices, people have higher and higher requirements for the miniature speakers used in them. Meanwhile, portable electronic devices on the market are becoming thinner and lighter, especially mobile phones, which have begun to adopt foldable screen designs. This requires miniature speakers to still have good sound effects while being ultra-thin. Summary of the Invention

[0003] The technical problem solved by this utility model is to provide an ultra-thin miniature speaker with good sound quality.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a miniature loudspeaker, comprising:

[0005] Sink stand;

[0006] A magnetic circuit assembly includes a lower yoke, a central magnetic structure, a side magnetic structure, an upper yoke, and a first tweeter magnetic structure. The central magnetic structure includes a lower central magnet, a central washer, and an upper central magnet arranged sequentially from bottom to top. The lower central magnet is connected to the lower yoke, and the upper central magnet is connected to the upper yoke. The side magnetic structures are respectively provided on opposite sides of the central magnetic structure to form a bass magnetic gap. The side magnetic structure includes a lower side magnet, a side washer, and an upper magnet arranged sequentially from bottom to top. The lower magnet is connected to the lower yoke, and the upper magnet is connected to the upper yoke. The upper central magnet has a first mounting through hole, and the upper yoke has a first window communicating with the first mounting through hole. The first tweeter magnetic structure is disposed in the first mounting through hole and forms a first tweeter magnetic gap with the upper central magnet.

[0007] A bass resonator assembly includes a bass diaphragm assembly, a frame, and a bass voice coil. The bass diaphragm assembly connects the frame to the upper yoke. The bass voice coil is located in the bass magnetic gap. The bass diaphragm assembly includes an inner ring and an outer ring. The frame connects the bass diaphragm assembly and the bass voice coil. The frame includes an outer connecting part, a stepped part, and an inner connecting part connected in sequence. The inner connecting parts are respectively provided at both ends of the central magnetic structure. The inner connecting parts are connected to the bass voice coil. The outer connecting parts are located between the inner ring and the outer ring and are connected to the bass diaphragm assembly.

[0008] The first tweeter vibration assembly includes a first tweeter voice coil and a first tweeter diaphragm assembly connecting the first tweeter voice coil and the upper yoke. The first tweeter voice coil is disposed in the first tweeter magnetic gap, and the first tweeter diaphragm assembly closes the first window.

[0009] In one embodiment, the system further includes a second tweeter resonant assembly. The magnetic circuit assembly also includes a second tweeter magnetic structure. The lower center magnet has a second mounting through hole, and the lower yoke has a second window communicating with the second mounting through hole. The second tweeter magnetic structure is disposed within the second mounting through hole and forms a second tweeter magnetic gap with the lower center magnet. The second tweeter resonant assembly includes a second tweeter voice coil and a second tweeter diaphragm assembly connecting the second tweeter voice coil and the lower yoke. The second tweeter voice coil is disposed in the second tweeter magnetic gap, and the second tweeter diaphragm assembly closes the second window.

[0010] In one embodiment, the inner folding ring protrudes away from the lower yoke, and the outer folding ring protrudes towards the lower yoke.

[0011] In one embodiment, the stepped portion includes at least one step structure.

[0012] In one embodiment, a reinforcing member is provided on the step surface of the stepped structure.

[0013] In one embodiment, the inner connection portion is connected to the outer wall surface and / or top surface of the bass voice coil.

[0014] In one embodiment, the upper yoke has an upper clearance groove for avoiding the bass voice coil; and / or, the lower yoke has a lower clearance groove for avoiding the bass voice coil.

[0015] In one embodiment, the bass diaphragm assembly includes an inner diaphragm, a bass mid-mount, and an outer diaphragm connected sequentially from the inside out. The inner folded ring is located on the inner diaphragm, the outer folded ring is located on the outer diaphragm, and the outer connecting portion is fixedly connected to the bass mid-mount.

[0016] In one embodiment, the bass diaphragm includes a first part, a lifting part, and a second part connected sequentially from the inside out. The distance between the second part and the lower yoke is greater than the distance between the first part and the lower yoke. The outer edge of the inner diaphragm is connected to the first part.

[0017] In one embodiment, the system further includes a support frame that is generally ring-shaped, the support frame connecting the inner edge of the bass diaphragm assembly to the upper magnet, and the upper yoke indirectly connected to the upper magnet through the support frame.

[0018] The beneficial effects of this invention are as follows: This miniature speaker features a novel structure and a large overall volume of magnets in the magnetic circuit assembly, effectively increasing the magnetic field strength and improving its performance. Furthermore, the staggered arrangement of the bass voice coil and bass diaphragm assembly effectively reduces the thickness required for operation, enabling ultra-thin design. This miniature speaker can achieve high and low frequency crossover, further enhancing its sound quality and performance. Moreover, the simultaneous high and low frequency output makes it particularly suitable for portable electronic devices requiring single-sided sound output. 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 is a schematic diagram of the overall structure of the miniature loudspeaker in Embodiment 1;

[0021] Figure 2 is a schematic diagram of the overall structure of the miniature loudspeaker in Embodiment 1.

[0022] Figure 3 is a cross-sectional view of the miniature loudspeaker of Embodiment 1;

[0023] Figure 4 is a second cross-sectional view of the miniature loudspeaker of Embodiment 1;

[0024] Figure 5 is a schematic diagram of part of the structure of the miniature speaker in Embodiment 1.

[0025] Explanation of icon numbers:

[0026] 1. Pot stand;

[0027] 2. Magnetic circuit assembly; 21. Lower yoke; 211. Lower clearance slot; 22. Central magnetic structure; 221. Lower central magnet; 222. Central washer; 223. Upper central magnet; 23. Side magnetic structure; 231. Lower side magnet; 232. Side washer; 233. Upper side magnet; 24. Upper yoke; 241. Upper clearance slot; 25. First tweeter magnetic structure; 251. First tweeter magnet; 252. First tweeter washer; 26. Second tweeter magnetic structure; 261. Second tweeter magnet; 262. Second tweeter washer;

[0028] 3. Bass resonator assembly; 31. Bass diaphragm assembly; 311. Inner surround; 312. Outer surround; 313. Inner diaphragm; 314. Bass center mount; 3141. First part; 3142. Lifting part; 3143. Second part; 315. Outer diaphragm; 32. Frame; 321. Outer connecting part; 322. Stepped part; 323. Inner connecting part; 324. Reinforcing member; 33. Bass voice coil;

[0029] 4. First tweeter resonant assembly; 41. First tweeter voice coil; 42. First tweeter diaphragm assembly;

[0030] 5. Second tweeter resonant assembly; 51. Second tweeter voice coil; 52. Second tweeter diaphragm assembly;

[0031] 6. Support frame. 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 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.

[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 5. Embodiment 1 of this utility model is a miniature loudspeaker, including a frame 1, a magnetic circuit assembly 2, a bass resonator 3, and a first treble resonator 4. The magnetic circuit assembly 2 includes a lower yoke 21, a central magnetic structure 22, a side magnetic structure 23, an upper yoke 24, and a first treble magnetic structure 25. The central magnetic structure 22 includes a lower central magnet 221, a central washer 222, and an upper central magnet 223 arranged sequentially from bottom to top. The lower central magnet 221 is connected to the lower yoke 21, and the upper central magnet 223 is connected to the upper yoke 24. The side magnetic structures 23 are respectively arranged on opposite sides of the central magnetic structure 22, forming a bass magnetic gap between the central magnetic structure 22 and the side magnetic structures 23. The side magnetic structure 23 includes a lower side magnet 231, a side washer 222, and a lower side magnet 23 arranged sequentially from bottom to top. 232 and upper magnet 233, the lower magnet 231 is connected to the lower yoke 21, the upper magnet 233 is connected to the upper yoke 24; the upper center magnet 223 is provided with a first mounting through hole, the upper yoke 24 has a first window communicating with the first mounting through hole, the first tweeter magnetic structure 25 is disposed in the first mounting through hole and forms a first tweeter magnetic gap with the upper center magnet 223. Specifically, the first tweeter magnetic structure 25 includes a first tweeter magnet 251 and a first tweeter washer 252. The first tweeter magnet 251 connects the first tweeter washer 252 and the center washer 222. The magnetic pole orientation of the first tweeter magnet 251 is opposite to the magnetic pole orientation of the upper center magnet 223. The first tweeter washer 252 is aligned or nearly aligned with the upper yoke 24.

[0040] The bass vibration assembly 3 includes a bass diaphragm assembly 31, a frame 32, and a bass voice coil 33. The bass diaphragm assembly 31 connects the frame 1 and the upper yoke 24. The bass voice coil 33 is disposed in the bass magnetic gap. The bass diaphragm assembly 31 includes an inner ring 311 and an outer ring 312. The frame 32 connects the bass diaphragm assembly 31 and the bass voice coil 33. The frame 32 includes an outer connecting part 321, a stepped part 322, and an inner connecting part 323 connected in sequence. The two ends of the central magnetic structure 22 are respectively provided with the inner connecting part 323. The inner connecting part 323 is connected to the bass voice coil 33. The outer connecting part 321 is located between the inner ring 311 and the outer ring 312 and is connected to the bass diaphragm assembly 31. Optionally, the outer connecting part 321 is a complete or partitioned ring frame, which can improve the structural strength of the frame 32 and facilitate the assembly of the frame 32 and the bass diaphragm assembly 31.

[0041] The first high-frequency vibration component 4 includes a first high-frequency voice coil 41 and a first high-frequency diaphragm component 42 connecting the first high-frequency voice coil 41 and the upper yoke 24. The first high-frequency voice coil 41 is disposed in the first high-frequency magnetic gap, and the first high-frequency diaphragm component 42 closes the first window.

[0042] In one or more embodiments, the miniature loudspeaker further includes a second tweeter vibration component 5, and the magnetic circuit component 2 further includes a second tweeter magnetic structure 26. The lower central magnet 221 has a second mounting through hole, and the lower yoke 21 has a second window communicating with the second mounting through hole. The second tweeter magnetic structure 26 is disposed within the second mounting through hole and forms a second tweeter magnetic gap with the lower central magnet 221. Specifically, the second tweeter magnetic structure 26 includes a second tweeter magnet 261 and a second tweeter washer 262. Steel 261 connects the second tweeter 262 and the center tweeter 222. The magnetic pole orientation of the second tweeter 261 is opposite to that of the lower center magnet 221. The second tweeter 262 is aligned or nearly aligned with the lower yoke 21. The second tweeter resonant assembly 5 includes a second tweeter voice coil 51 and a second tweeter diaphragm assembly 52 connecting the second tweeter voice coil 51 and the lower yoke 21. The second tweeter voice coil 51 is located in the second tweeter magnetic gap, and the second tweeter diaphragm assembly 52 closes the second window. This allows the miniature speaker to have two tweeter units, effectively improving the high-frequency sound effect of the miniature speaker. Simultaneously, it allows the miniature speaker to be adapted for portable electronic devices with dual-sided sound output.

[0043] The inner folding ring 311 protrudes away from the lower yoke 21, and the outer folding ring 312 protrudes towards the lower yoke 21. Specifically, the inner edge of the bass diaphragm assembly 31 is connected to the bottom surface of the upper yoke 24, which can further reduce the thickness space required for the miniature speaker to operate.

[0044] The stepped portion 322 includes at least one step structure, the presence of which provides a prerequisite for connecting the bass diaphragm assembly 31 and the bass voice coil 33 to the frame 32. To improve the structural strength of the frame 32, optionally, a reinforcing member 324 is provided on the step surface of the stepped structure. In this embodiment, the reinforcing member 324 is a reinforcing plate; in other embodiments, the reinforcing member 324 may be a reinforcing block, etc.

[0045] The inner connecting part 323 is connected to the outer wall surface or the top surface of the bass voice coil 33. In this embodiment, the inner connecting part 323 is connected to both the outer wall surface and the top surface of the bass voice coil 33. This can effectively increase the bonding area between the frame 32 and the bass voice coil 33, thereby improving the stability of the connection between the frame 32 and the bass voice coil 33, and thus improving the structural stability of the miniature loudspeaker.

[0046] The upper yoke 24 has an upper clearance groove 241 for avoiding the bass voice coil 33; and / or, the lower yoke 21 has a lower clearance groove 211 for avoiding the bass voice coil 33. The arrangement of the upper clearance groove 241 and / or the lower clearance groove 211 allows the bass voice coil 33 to vibrate with a larger amplitude.

[0047] In one or more embodiments, the bass diaphragm assembly 31 includes an inner diaphragm 313, a bass mid-mount 314, and an outer diaphragm 315 connected sequentially from the inside out. The inner ring 311 is located on the inner diaphragm 313, and the outer ring 312 is located on the outer diaphragm 315. The outer connecting portion 321 is fixedly connected to the bass mid-mount 314. In another embodiment, the inner diaphragm 313 and the outer diaphragm 315 may also be an integrally formed structure.

[0048] In this embodiment, the bass mid-mount 314 includes a first part 3141, a lifting part 3142, and a second part 3143 connected sequentially from the inside out. The distance between the second part 3143 and the lower yoke 21 is greater than the distance between the first part 3141 and the lower yoke 21. The outer edge of the inner diaphragm 313 is connected to the first part 3141, and the inner edge of the outer diaphragm 315 is connected to the second part 3143. This structure of the bass mid-mount 314 helps to reduce the thickness space required for the operation of the miniature speaker, which is beneficial for the ultra-thin design of the miniature speaker.

[0049] Preferably, the lifting part 3142 corresponds to the stepped structure. It can be seen that the stepped structure component enables the frame 32 to connect the bass diaphragm assembly 31 and the bass voice coil 33, and also enables it to avoid the lifting part 3142.

[0050] In some embodiments, the miniature loudspeaker further includes a support frame 6 in the shape of an overall ring. The support frame 6 connects the inner edge of the bass diaphragm assembly 31 to the upper magnet 233, and the upper yoke 24 is indirectly connected to the upper magnet 233 through the support frame 6. The support frame 6 can prevent the inner edge of the inner diaphragm 313 from accidentally detaching from the upper yoke 24, thereby improving the structural stability of the miniature loudspeaker.

[0051] 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 miniature loudspeaker, characterized in that: The device includes a frame and a magnetic circuit assembly. The magnetic circuit assembly includes a lower yoke, a central magnetic structure, a side magnetic structure, an upper yoke, and a first tweeter magnetic structure. The central magnetic structure includes a lower central magnet, a central washer, and an upper central magnet arranged sequentially from bottom to top. The lower central magnet is connected to the lower yoke, and the upper central magnet is connected to the upper yoke. The side magnetic structures are respectively provided on opposite sides of the central magnetic structure to form a bass magnetic gap. The side magnetic structure includes a lower side magnet, a side washer, and an upper magnet arranged sequentially from bottom to top. The lower magnet is connected to the lower yoke, and the upper magnet is connected to the upper yoke. The upper central magnet has a first mounting through hole, and the upper yoke has a first window communicating with the first mounting through hole. The first tweeter magnetic structure is disposed in the first mounting through hole and forms a first tweeter magnetic gap with the upper central magnet. A bass resonator assembly includes a bass diaphragm assembly, a frame, and a bass voice coil. The bass diaphragm assembly connects the frame to the upper yoke. The bass voice coil is located in the bass magnetic gap. The bass diaphragm assembly includes an inner ring and an outer ring. The frame connects the bass diaphragm assembly and the bass voice coil. The frame includes an outer connecting portion, a stepped portion, and an inner connecting portion connected in sequence. The two ends of the central magnetic structure are respectively provided with the inner connecting portion. The inner connecting portion connects to the bass voice coil. The outer connecting portion is located between the inner ring and the outer ring and connects to the bass diaphragm assembly. A first tweeter resonator assembly includes a first tweeter voice coil and a first tweeter diaphragm assembly connecting the first tweeter voice coil and the upper yoke. The first tweeter voice coil is located in the first tweeter magnetic gap. The first tweeter diaphragm assembly closes the first window.

2. The miniature loudspeaker according to claim 1, characterized in that: It also includes a second high-frequency resonant assembly, the magnetic circuit assembly further includes a second high-frequency magnetic structure, the lower center magnet is provided with a second mounting through hole, the lower yoke has a second window communicating with the second mounting through hole, the second high-frequency magnetic structure is disposed in the second mounting through hole and forms a second high-frequency magnetic gap with the lower center magnet; the second high-frequency resonant assembly includes a second high-frequency voice coil and a second high-frequency diaphragm assembly connecting the second high-frequency voice coil and the lower yoke, the second high-frequency voice coil is disposed in the second high-frequency magnetic gap, and the second high-frequency diaphragm assembly closes the second window.

3. The miniature loudspeaker according to claim 1, characterized in that: The inner folding ring protrudes away from the lower yoke, and the outer folding ring protrudes towards the lower yoke.

4. The miniature loudspeaker according to claim 1, characterized in that: The stepped section includes at least one step structure.

5. The miniature loudspeaker according to claim 4, characterized in that: The stepped surface of the stepped structure is provided with reinforcing members.

6. The miniature loudspeaker according to claim 1, characterized in that: The inner connecting part is connected to the outer wall surface and / or top surface of the bass voice coil.

7. The miniature loudspeaker according to claim 1, characterized in that: The upper yoke has an upper clearance groove for avoiding the bass voice coil; and / or, the lower yoke has a lower clearance groove for avoiding the bass voice coil.

8. The miniature loudspeaker according to claim 1, characterized in that: The bass diaphragm assembly includes an inner diaphragm, a bass mid-mount, and an outer diaphragm connected sequentially from the inside out. The inner folded ring is located on the inner diaphragm, the outer folded ring is located on the outer diaphragm, and the outer connecting part is fixedly connected to the bass mid-mount.

9. The miniature loudspeaker according to claim 8, characterized in that: The bass diaphragm includes a first part, a lifting part, and a second part connected sequentially from the inside out. The distance between the second part and the lower yoke is greater than the distance between the first part and the lower yoke. The outer edge of the inner diaphragm is connected to the first part.

10. The miniature loudspeaker according to claim 1, characterized in that: It also includes a support frame that is in the shape of a ring, the support frame connecting the inner edge of the bass diaphragm assembly to the upper magnet, and the upper yoke indirectly connected to the upper magnet through the support frame.

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