A micro speaker

Abstract

This utility model discloses a miniature loudspeaker, comprising a shaped dome and a flat dome. The shaped dome has a concave convex bulge for connecting a voice coil. The flat dome is generally flat and located above the shaped dome, with its bottom surface connected to the top surface of the shaped dome. This miniature loudspeaker, by adding a flat dome connected to the shaped dome above it, effectively improves the structural strength of the central region of the diaphragm assembly, giving the diaphragm assembly greater rigidity. This enhances the high-frequency performance of the miniature loudspeaker, resulting in a more pronounced high-frequency sound and improving the user experience.

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] With the widespread adoption of smartphones and other mobile devices, the demand for miniature speakers is constantly increasing. At the same time, more and more users are demanding better sound reproduction performance from their mobile devices.

[0003] Some miniature loudspeakers feature a shaped dome, which has a concave convex bulge. The voice coil is located below and connected to this convex bulge. This allows the voice coil to be closer to the yoke, increasing the area where the voice coil can be inserted into the magnetic gap, thereby improving the acoustic performance of the miniature loudspeaker. However, the presence of the concave convex bulge results in a relatively weak rigidity of the shaped dome, leading to weaker high-frequency performance in the miniature loudspeaker. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a miniature loudspeaker with good high-frequency performance.

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

[0006] A shaped dome having a concave convex hull for connecting a voice coil;

[0007] A flat dome, the flat dome being generally flat, is located above the shaped dome, and the bottom surface of the flat dome is connected to the top surface of the shaped dome.

[0008] In one embodiment, the shaped dome is bonded and fixed to the flat dome.

[0009] In one embodiment, the material of the shaped dome may be the same as or different from the material of the flat dome.

[0010] In one embodiment, the device further includes a diaphragm, which comprises an inner fixing portion, a folded ring portion, and an outer fixing portion connected sequentially from the inside to the outside, wherein the shaped dome or the flat dome is fixedly connected to the inner fixing portion.

[0011] In one embodiment, the device further includes a diaphragm, which comprises an inner fixing portion, a folded ring portion, and an outer fixing portion connected sequentially from the inside to the outside. The periphery of the shaped dome has a pressure groove, and the concave convex bulge communicates with the pressure groove. The inner edge of the inner fixing portion is located within the pressure groove and below the flat dome. The inner fixing portion is fixedly connected to the shaped dome and the flat dome, respectively.

[0012] In one embodiment, the inner bottom surface of the pressure groove is coplanar with the inner bottom surface of the concave convex bulge.

[0013] In one embodiment, the concave convex bulge is a stamped structure formed by stamping.

[0014] In one embodiment, the system further includes a plurality of voice coils, the top surface of which is bonded and fixed to the bottom surface of the concave convex hull.

[0015] In one embodiment, the device further includes a basket frame and a magnetic circuit assembly connected to the basket frame. The magnetic circuit assembly includes a yoke and a central magnetic structure, a side magnetic structure, and an intermediate magnetic structure respectively disposed on the yoke. There are multiple central magnetic structures arranged side by side, with an intermediate magnetic structure corresponding to each adjacent central magnetic structure. There are multiple voice coils, and each voice coil is arranged in a one-to-one correspondence with a central magnetic structure.

[0016] The beneficial effects of this utility model are as follows: This miniature speaker adds a flat dome connected to the shaped dome above the shaped dome, which effectively improves the structural strength of the central area of ​​the diaphragm assembly, making the diaphragm assembly have greater rigidity, thereby improving the high-frequency performance of the miniature speaker, making the miniature speaker have better high-frequency sound effects, and enhancing the user experience. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a cross-sectional view of the miniature loudspeaker in Embodiment 1;

[0019] Figure 2 This is a schematic diagram of the shaped dome structure in the miniature loudspeaker of Embodiment 1;

[0020] Figure 3 This is a cross-sectional view of the shaped dome in the miniature loudspeaker of Embodiment 1.

[0021] Explanation of icon numbers:

[0022] 1. Pot stand;

[0023] 2. Diaphragm assembly; 21. Diaphragm; 211. Inner fixing part; 212. Folded ring part; 213. Outer fixing part; 22. Shaping dome; 221. Concave convex bulge; 222. Groove; 23. Flat dome;

[0024] 3. Voice coil;

[0025] 4. Magnetic circuit assembly; 41. Yoke; 42. Central magnetic structure; 43. Side magnetic structure; 44. Intermediate magnetic structure. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example 1

[0033] Please refer to Figures 1 to 3 One embodiment of this utility model is as follows: A miniature loudspeaker includes a frame 1 and a vibration assembly and a magnetic circuit assembly 4 respectively connected to the frame 1. The magnetic circuit assembly 4 has a magnetic gap. The vibration assembly includes a diaphragm assembly 2 and a plurality of voice coils 3 movable in the magnetic gap. The diaphragm assembly 2 includes a dome assembly and a diaphragm 21 connecting the dome assembly and the frame 1. The dome assembly includes a shaped dome 22 and a flat dome 23. The shaped dome 22 has a concave convex bulge 221 for connecting the voice coils 3. The top surface of the voice coil 3 is bonded and fixed to the bottom surface of the concave convex bulge 221. The flat dome 23 is generally flat and is located above the shaped dome 22. The bottom surface of the flat dome 23 is connected to the top surface of the shaped dome 22. Specifically, the shaped dome 22 and the flat dome 23 are bonded and fixed.

[0034] In some embodiments, the material of the shaped dome 22 is the same as that of the flat dome 23, while in other embodiments, the materials of the shaped dome 22 and the flat dome 23 may be different.

[0035] The diaphragm 21 includes an inner fixing part 211, a folded ring part 212, and an outer fixing part 213 connected sequentially from the inside to the outside. In some embodiments, the shaped dome 22 and the flat dome 23 are selectively fixedly connected to the inner fixing part 211. In this embodiment, the shaped dome 22 has a groove 222 on its periphery, and the concave convex bulge 221 communicates with the groove 222. The inner edge of the inner fixing part 211 is located inside the groove 222 and below the flat dome 23. The inner fixing part 211 is fixedly connected to both the shaped dome 22 and the flat dome 23. This effectively increases the bonding area between the dome assembly and the diaphragm 21, thereby improving the connection strength between the diaphragm 21 and the dome assembly, and thus improving the structural stability of the diaphragm assembly 2.

[0036] In one or more embodiments, the inner bottom surface of the pressure groove 222 is coplanar with the inner bottom surface of the concave convex bulge 221.

[0037] In actual production, the concave convex bulge 221 can be a stamped structure formed by stamping, and similarly, the pressure groove 222 can also be a stamped structure formed by stamping.

[0038] The magnetic circuit assembly 4 includes a yoke 41 and a central magnetic structure 42, a side magnetic structure 43, and an intermediate magnetic structure 44 respectively disposed on the yoke 41. There are multiple central magnetic structures 42 arranged side by side, and an intermediate magnetic structure 44 is disposed between two adjacent central magnetic structures 42. There are multiple voice coils 3, and each voice coil 3 is disposed in a one-to-one correspondence with a central magnetic structure 42. Specifically, the central magnetic structure 42 includes a central magnet and a central washer, the central magnet being located between the central washer and the yoke 41, and the central magnet connecting the central washer and the yoke 41 respectively; the intermediate magnetic structure 44 includes an intermediate magnet and an intermediate washer, the intermediate magnet being located between the intermediate washer and the yoke 41, and the intermediate magnet connecting the intermediate washer and the yoke 41 respectively; the side magnetic structure 43 includes a side magnet and a side washer, the side magnet being located between the side washer and the yoke 41, and the side magnet connecting the side washer and the yoke 41 respectively.

[0039] 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 inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A micro speaker, characterized by: include A shaped dome having a concave convex hull for connecting a voice coil; A flat dome, the flat dome being generally flat, is located above the shaped dome, and the bottom surface of the flat dome is connected to the top surface of the shaped dome.

2. The micro speaker of claim 1, wherein: The shaped dome is bonded and fixed to the flat dome.

3. The miniature loudspeaker according to claim 1, characterized in that: The material of the shaped dome may be the same as or different from the material of the flat dome.

4. The miniature loudspeaker according to claim 1, characterized in that: It also includes a diaphragm, which comprises an inner fixing part, a folded ring part, and an outer fixing part connected sequentially from the inside to the outside, and the shaped dome or the flat dome is fixedly connected to the inner fixing part.

5. The miniature loudspeaker according to claim 1, characterized in that: It also includes a diaphragm, which includes an inner fixing part, a folded ring part and an outer fixing part connected sequentially from the inside to the outside. The periphery of the shaped dome has a pressure groove, the concave convex bulge is connected to the pressure groove, the inner edge of the inner fixing part is located in the pressure groove and below the flat dome, and the inner fixing part is fixedly connected to the shaped dome and the flat dome respectively.

6. The miniature loudspeaker according to claim 5, characterized in that: The inner bottom surface of the pressure groove is coplanar with the inner bottom surface of the concave convex bulge.

7. The miniature loudspeaker according to claim 1, characterized in that: The concave convex bulge is a stamped structure formed by stamping.

8. The miniature loudspeaker according to claim 1, characterized in that: It also includes several voice coils, the top surface of which is bonded and fixed to the bottom surface of the concave convex hull.

9. The miniature loudspeaker according to claim 8, characterized in that: It also includes a basket frame and a magnetic circuit assembly connected to the basket frame. The magnetic circuit assembly includes a yoke and a central magnetic structure, a side magnetic structure and an intermediate magnetic structure respectively disposed on the yoke. There are multiple central magnetic structures, which are arranged side by side. An intermediate magnetic structure is disposed between two adjacent central magnetic structures. There are multiple voice coils, which are arranged in a one-to-one correspondence with the central magnetic structures.

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