Miniature loudspeaker

Abstract

The miniature loudspeaker comprises a frame, a magnetic circuit assembly, a bass vibration assembly and a treble vibration assembly, the magnetic circuit assembly comprises a lower yoke, a central magnetic structure, a side magnetic structure, an upper yoke and a 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 lower center magnetic steel is provided with an installation through hole, the lower yoke is provided with a window communicated with the installation through hole, the high-pitch magnetic structure is arranged in the installation through hole, and a high-pitch magnetic gap is formed between the high-pitch magnetic structure and the lower center magnetic steel. The miniature loudspeaker is novel in structure, can realize ultra-thinness and treble and bass frequency division, and is good in sound effect.

Description

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. Utility Model Content

[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 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 lower central magnet has a mounting through hole, and the lower yoke has a window communicating with the mounting through hole. The tweeter magnetic structure is disposed in the mounting through hole and forms a tweeter magnetic gap with the lower 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 disposed in the bass magnetic gap. The bass diaphragm assembly includes an inner surround and an outer surround. 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 part connects to the bass voice coil. The outer connecting part is located between the inner surround and the outer surround and connects to the bass diaphragm assembly.

[0008] A tweeter vibration assembly, comprising a tweeter voice coil and a tweeter diaphragm assembly connecting the tweeter voice coil and the lower yoke, wherein the tweeter voice coil is disposed in the tweeter magnetic gap, and the tweeter diaphragm assembly closes the window.

[0009] In one embodiment, the inner connecting portion is provided at each end of the central magnetic structure.

[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 utility model are as follows: This miniature speaker has a novel structure and a large total volume of magnets in the magnetic circuit assembly, which effectively improves the magnetic field strength of the miniature speaker and is conducive to improving the performance of the miniature speaker. Moreover, the bass voice coil and bass diaphragm assembly are staggered, which effectively reduces the thickness space required for the miniature speaker to work, enabling the miniature speaker to achieve ultra-thin design. Furthermore, this miniature speaker can achieve high and low frequency crossover, which is conducive to improving the sound effect of the miniature speaker and further enhancing its performance. 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 miniature loudspeaker in Embodiment 1. Figure 1 ;

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

[0022] Figure 3 Cross-section of the miniature loudspeaker of Embodiment 1 Figure 1 ;

[0023] Figure 4 Cross-section of the miniature loudspeaker of Embodiment 1 Figure 2 ;

[0024] Figure 5 This is a schematic diagram of a portion of the structure of the miniature loudspeaker 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. Tweeter magnetic structure; 251. Tweeter magnet; 252. 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. Tweeter vibration assembly; 41. Tweeter voice coil; 42. Tweeter diaphragm assembly;

[0030] 5. Support frame. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Example 1

[0038] Please refer to Figures 1 to 5Embodiment 1 of this utility model is a miniature loudspeaker, including a frame 1, a magnetic circuit assembly 2, a bass vibration assembly 3, and a treble vibration assembly 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 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 structures 23 include lower side magnets arranged sequentially from bottom to top. 231, a washer 232, and an upper magnet 233; the lower magnet 231 is connected to the lower yoke 21, and the upper magnet 233 is connected to the upper yoke 24; the lower center magnet 221 is provided with a mounting through hole, and the lower yoke 21 has a window communicating with the mounting through hole; the tweeter magnetic structure 25 is disposed in the mounting through hole and forms a tweeter magnetic gap with the lower center magnet 221; specifically, the tweeter magnetic structure 25 includes a tweeter magnet 251 and a tweeter washer 252; the tweeter magnet 251 connects the tweeter washer 252 and the center washer 222; the magnetic pole orientation of the tweeter magnet 251 is opposite to that of the lower center magnet 221; the tweeter washer 252 is aligned or nearly aligned with the lower yoke 21.

[0039] 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.

[0040] The high-frequency vibration component 4 includes a high-frequency voice coil 41 and a high-frequency diaphragm component 42 connecting the high-frequency voice coil 41 and the lower yoke 21. The high-frequency voice coil 41 is located in the high-frequency magnetic gap, and the high-frequency diaphragm component 42 closes the window.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In some embodiments, the miniature loudspeaker further includes a support frame 5 that is generally ring-shaped. The support frame 5 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 5. The support frame 5 can prevent a local area of ​​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.

[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 miniature loudspeaker, characterized in that: include Sink stand; A magnetic circuit assembly includes a lower yoke, a central magnetic structure, a side magnetic structure, an upper yoke, and a 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 lower central magnet has a mounting through hole, and the lower yoke has a window communicating with the mounting through hole. The tweeter magnetic structure is disposed in the mounting through hole and forms a tweeter magnetic gap with the lower 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 disposed in the bass magnetic gap. The bass diaphragm assembly includes an inner surround and an outer surround. 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 part connects to the bass voice coil. The outer connecting part is located between the inner surround and the outer surround and connects to the bass diaphragm assembly. A tweeter vibration assembly, comprising a tweeter voice coil and a tweeter diaphragm assembly connecting the tweeter voice coil and the lower yoke, wherein the tweeter voice coil is disposed in the tweeter magnetic gap, and the tweeter diaphragm assembly closes the window.

2. The miniature loudspeaker according to claim 1, characterized in that: The central magnetic structure has internal connecting parts at both ends.

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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