Miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker, which comprises a basin stand and a magnetic circuit assembly, the basin stand is provided with a notch, the notch is communicated with the bottom surface of the basin stand, and the outer wall surface of the basin stand is provided with a blind groove communicated with the notch; the magnetic circuit assembly comprises an edge washer, the edge washer comprises a protruding part and a built-in part which are vertically connected, one end, far away from the built-in part, of the protruding part extends into the notch and is bonded and fixed with the basin stand, at least one side of one end, far away from the built-in part, of the protruding part is provided with an extension part accommodated in the blind groove, and the extension part is bonded with the inner surface of the blind groove. The miniature loudspeaker is novel in structure, the outer wall surface of the basin stand is provided with the blind groove communicated with the notch, the side washer is provided with the extension part accommodated in the blind groove, and the extension part is bonded with the basin stand, so that the bonding area of the basin stand and the side washer is increased, the bonding and fixing effect of the basin stand and the side washer is improved, and the structural stability of the miniature loudspeaker is enhanced.

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 electronic devices such as mobile phones, laptops, and smartwatches.

[0003] In the prior art, the frame and edge washer of miniature loudspeakers are generally glued together. However, in order to increase the volume of the edge magnetic structure in the magnetic circuit assembly of some miniature loudspeakers, a notch is set in the frame to allow part of the edge magnetic structure to protrude. In this case, the edge magnetic structure is convex in shape. The inner top surface of the notch on the frame is glued to the top surface of the edge washer. However, the wall thickness of the frame cannot be too thick, otherwise it will excessively encroach on the internal space of the miniature loudspeaker and affect the acoustic performance of the miniature loudspeaker. This results in the bonding area between the frame and the edge washer being too small, and the connection between the two is not stable enough, affecting the structural stability of the miniature loudspeaker. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a miniature loudspeaker with a stable connection between the washer and the frame.

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

[0006] A basin stand, wherein the basin stand has a notch that connects to the bottom surface of the basin stand, and the outer wall surface of the basin stand has a blind groove that connects to the notch;

[0007] A magnetic circuit assembly, the magnetic circuit assembly including a side washer, the side washer including a protrusion and a recessed portion connected vertically, one end of the protrusion away from the recessed portion extending into the notch and being bonded and fixed to the basin frame, at least one side of the end of the protrusion away from the recessed portion having an extension received in the blind groove, the extension being bonded to the inner surface of the blind groove.

[0008] In one embodiment, the protrusion has extensions on both sides.

[0009] In one embodiment, the edge washer is a planar symmetrical structure.

[0010] In one embodiment, the protrusion and the concealed portion are integrally formed as a single structure.

[0011] In one embodiment, the extension and the protrusion are integrally formed into a single structure.

[0012] In one embodiment, the inner region of the top surface of the edge washer is provided with a clearance groove.

[0013] In one embodiment, at least one side of the protrusion is bonded to the side of the notch.

[0014] In one embodiment, the inner top surface of the notch has a plurality of upwardly extending grooves, the top surface of the washer has a protrusion extending into the grooves, the top surface and side surface of the protrusion are respectively bonded to the basin stand, and the top surface of the washer is bonded to the inner top surface of the notch.

[0015] In one embodiment, the number of protrusions on the edge washer is one, and the protrusions are arranged corresponding to the central axis of the edge washer.

[0016] In one embodiment, the number of protrusions on the edge is multiple, and the multiple protrusions are arranged in a row at intervals.

[0017] The beneficial effects of this invention are as follows: This miniature loudspeaker has a novel structure. The outer wall of the frame has a blind groove with a connecting notch, and the washer has an extension that is accommodated in the blind groove and is bonded to the frame. This increases the bonding area between the frame and the washer, which is beneficial for improving the bonding and fixing effect between the frame and the washer, thereby enhancing the structural stability of the miniature loudspeaker. In addition, the presence of the extension increases the overall volume of the washer, which can enhance the magnetic conductivity of the washer to a certain extent, thereby improving the magnetic field of the miniature loudspeaker and improving its acoustic performance. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the structure of the miniature loudspeaker according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the frame structure in the miniature loudspeaker according to Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of the side magnet structure in the miniature loudspeaker of Embodiment 1 of this utility model.

[0022] Explanation of icon numbers:

[0023] 1. Sink rack; 11. Notch; 12. Blind groove; 13. Groove;

[0024] 2. Diaphragm assembly;

[0025] 3. Magnetic circuit assembly; 31. Yoke; 32. Side magnetic structure; 321. Side magnet; 322. Side washer; 3221. Protrusion; 3222. Concealed part; 3223. Extension; 3224. Clearance groove; 3225. Bump. 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 a miniature loudspeaker, including a frame 1, a vibration assembly, and a magnetic circuit assembly 3. The vibration assembly includes a connected diaphragm assembly 2 and a voice coil. The voice coil is located inside the frame 1, and the diaphragm assembly 2 is connected to the frame 1. The frame 1 has a notch 11 that communicates with the bottom surface of the frame 1, and the outer wall of the frame 1 has a blind groove 12 that communicates with the notch 11. The magnetic circuit assembly 3 includes a yoke 31, a central magnetic structure, and a side magnetic structure 32. The central magnetic structure is located between at least one set of two oppositely arranged side magnetic structures 32, and a magnetic gap is formed between the central magnetic structure and the side magnetic structure 32 to allow the voice coil to move. The central magnetic structure includes a central magnet and a central washer. The central washer is located above the central magnet, and the central magnet is connected to the central washer and the yoke 31 respectively. A portion of the side magnetic structure 32 extends into the notch. In the 11, the edge magnetic structure 32 includes an edge magnet 321 and an edge washer 322. The edge washer 322 is located above the edge magnet 321. The edge magnet 321 connects the edge washer 322 and the yoke 31. The edge washer 322 includes a vertically connected protrusion 3221 and a recessed portion 3222. The protrusion 3221 and the recessed portion 3222 are integrally formed. The recessed portion 3222 is located at the... Inside the basin stand 1, one end of the protrusion 3221 away from the concealed portion 3222 extends into the notch 11 and is bonded and fixed to the basin stand 1. At least one side of the protrusion 3221 away from the concealed portion 3222 has an extension 3223 that is received in the blind groove 12. The extension 3223 and the protrusion 3221 are integrally formed into a single structure. The extension 3223 is bonded to the inner surface of the blind groove 12.

[0034] The extension 3223 is at least bonded to the inner wall surface of the basin frame 1. In a preferred embodiment, the side, top and inner wall surfaces of the extension 3223 are bonded to the basin frame 1 respectively.

[0035] In some embodiments, the protrusion 3221 may have the extension 3223 on only one side, while in this embodiment, the protrusion 3221 has the extension 3223 on both sides. Preferably, the edge washer 322 has a planar symmetrical structure.

[0036] To prevent the diaphragm assembly 2 from colliding with the edge washer 322 during vibration and thus generating noise, optionally, the inner side area of ​​the top surface of the edge washer 322 is provided with a relief groove 3224.

[0037] To further improve the stability of the connection between the washer 322 and the basin stand 1, optionally, at least one side of the protrusion 3221 is bonded to the side of the notch 11. Preferably, one side of the protrusion 3221 is bonded to one side of the notch 11, and the other side of the protrusion 3221 is bonded to the other side of the notch 11. That is, the two sides of the protrusion 3221 correspond one-to-one with the two sides of the notch 11 and are bonded and fixed. Correspondingly, the blind grooves 12 are respectively provided on both sides of the notch 11.

[0038] The inner top surface of the notch 11 has several upwardly extending grooves 13, and the top surface of the washer 322 has protrusions 3225 extending into the grooves 13. The top surface and side surface of the protrusions 3225 are respectively bonded to the basin frame 1, and the top surface of the washer 322 is bonded to the inner top surface of the notch 11. Preferably, the grooves 13 communicate with the inner wall surface and the outer wall surface of the basin frame 1.

[0039] In this embodiment, the number of protrusions 3225 on the washer 322 is one, and the protrusion 3225 is arranged corresponding to the central axis of the washer 322, which facilitates the processing and manufacturing of the washer 322. In other embodiments, the number of protrusions 3225 on the washer 322 is multiple, and the multiple protrusions 3225 are arranged in a row at intervals, which can increase the bonding area between the washer 322 and the basin stand 1 to a greater extent. In this case, the notch 11 is provided with multiple grooves 13.

[0040] 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 A basin stand, wherein the basin stand has a notch that connects to the bottom surface of the basin stand, and the outer wall surface of the basin stand has a blind groove that connects to the notch; A magnetic circuit assembly, the magnetic circuit assembly including a side washer, the side washer including a protrusion and a recessed portion connected vertically, one end of the protrusion away from the recessed portion extending into the notch and being bonded and fixed to the basin frame, at least one side of the end of the protrusion away from the recessed portion having an extension received in the blind groove, the extension being bonded to the inner surface of the blind groove.

2. The miniature loudspeaker according to claim 1, characterized in that: The protrusion has extensions on both sides.

3. The miniature loudspeaker according to claim 2, characterized in that: The aforementioned sidewall is a planar symmetrical structure.

4. The miniature loudspeaker according to claim 1, characterized in that: The protrusion and the concealed part are integrally formed into a single structure.

5. The miniature loudspeaker according to claim 1, characterized in that: The extension and the protrusion are integrally formed into a single structure.

6. The miniature loudspeaker according to claim 1, characterized in that: The inner side of the top surface of the edge is provided with a clearance groove.

7. The miniature loudspeaker according to claim 1, characterized in that: At least one side of the protrusion is bonded to the side of the notch.

8. The miniature loudspeaker according to claim 1, characterized in that: The inner top surface of the notch has several upwardly extending grooves, and the top surface of the washer has a protrusion extending into the grooves. The top surface and side surface of the protrusion are respectively bonded to the basin stand, and the top surface of the washer is bonded to the inner top surface of the notch.

9. The miniature loudspeaker according to claim 8, characterized in that: The number of protrusions on the edge washer is one, and the protrusions are arranged corresponding to the central axis of the edge washer.

10. The miniature loudspeaker according to claim 8, characterized in that: The number of protrusions on the edge is multiple, and the multiple protrusions are arranged in a row at intervals.

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