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 gap, and the gap is communicated with the bottom surface of the basin stand; 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 fixedly bonded with the basin stand, at least one side of the protruding part is provided with an extension part, and the extension part is located on the inner side of the basin stand and is bonded with the basin stand. The miniature loudspeaker is novel in structure, the side washer is provided with the extension part, and the extension part is located on the inner side of the basin frame and is bonded with the basin frame, so that the bonding area of the basin frame and the side washer is increased, the bonding and fixing effect of the basin frame and the side washer is improved, and the structural stability of the miniature loudspeaker is enhanced. Besides, due to the existence of the extension part, the overall size of the edge washer is increased, and the magnetic conduction effect of the edge washer can be enhanced to a certain extent, so that the magnetic field of the micro loudspeaker is improved, and the acoustic performance of the micro loudspeaker is improved.

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;

[0007] A magnetic circuit assembly, the magnetic circuit assembly including a side washer, the side washer including a vertically connected protrusion and a recess, one end of the protrusion away from the recess extending into the notch and being bonded and fixed to the basin stand, at least one side of the protrusion having an extension, the extension being located inside the basin stand and bonded to the basin stand.

[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, the device further includes a centering support and a voice coil. The centering support includes an inner mounting portion, a cantilever portion, and an outer mounting portion connected in sequence. The outer mounting portion is connected to the frame, and the inner mounting portion is connected to the voice coil. When the miniature loudspeaker is viewed from a low angle, a portion of the centering support overlaps with the extension portion.

[0014] In one embodiment, when viewing the miniature speaker from a low angle, a portion of the area at the connection between the cantilever and the external mounting portion overlaps with the extension.

[0015] The beneficial effects of this invention are as follows: This miniature loudspeaker has a novel structure, with an extension portion on the washer located inside the frame and bonded to it. This increases the bonding area between the frame and the washer, improving the bonding and fixing effect and thus enhancing the structural stability of the miniature loudspeaker. Furthermore, the extension portion increases the overall volume of the washer, which can enhance its magnetic conductivity to some extent, thereby improving the magnetic field of the miniature loudspeaker and enhancing its acoustic performance. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the internal structure of the miniature loudspeaker according to Embodiment 1 of this utility model;

[0018] Figure 2 This is a bottom view of the miniature speaker of Embodiment 1 of this utility model after the yoke is hidden;

[0019] Figure 3 This is a schematic diagram of the edge washer in the miniature loudspeaker of Embodiment 1 of this utility model.

[0020] Explanation of icon numbers:

[0021] 1. Sink stand; 11. Notch;

[0022] 2. Voice coil;

[0023] 3. Magnetic circuit assembly; 31. Yoke; 32. Central magnetic structure; 33. Side magnetic structure; 331. Side magnet; 332. Side washer; 3321. Protrusion; 3322. Concealed part; 3323. Extension; 3324. Clearance groove; 4. Centering support; 41. Internal mounting part; 42. Cantilever part; 43. External mounting part. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Example 1

[0031] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is: a micro speaker, including a chassis 1, a vibration component and a magnetic circuit component 3. The vibration component includes a diaphragm component and a voice coil 2 connected to each other. The voice coil 2 is located inside the chassis 1, and the diaphragm component is connected to the chassis 1. There is a notch 11 on the chassis 1, and the notch 11 communicates with the bottom surface of the chassis 1. The magnetic circuit component 3 includes a yoke 31, a central magnetic structure 32 and a side magnetic structure 33. The central magnetic structure 32 is located between at least two relatively arranged side magnetic structures 33, and a magnetic gap for the voice coil 2 to move is formed between the central magnetic structure 32 and the side magnetic structure 33. The central magnetic structure 32 includes a central magnet and a central washer. The central washer is located above the central magnet, and the central magnet is respectively connected to the central washer and the yoke 31. A part of the side magnetic structure 33 extends into the notch 11. The side magnetic structure 33 includes a side magnet 331 and a side washer 332. The side washer 332 is located above the side magnet 331. The side magnet 331 is connected to the side washer 332 and the yoke 31. The side magnet 331 is in a convex shape. The side washer 332 includes a protruding part 3321 and a hidden part 3322 that are vertically connected. The protruding part 3321 and the hidden part 3322 are an integrally formed structure processed integrally. One end of the protruding part 3321 away from the hidden part 3322 extends into the notch 11 and is adhesively fixed to the chassis 1. At least one side of the protruding part 3321 has an extension part 3323. The extension part 3323 is located inside the chassis 1 and is adhesively bonded to the chassis 1. The extension part 3323 and the protruding part 3321 are an integrally formed structure processed integrally.

[0032] In some embodiments, the protruding part 3321 may have the extension part 3323 on only one side; in this embodiment, both sides of the protruding part 3321 have the extension part 3323. That is to say, the side washer 332 is generally in a shape like the Chinese character 'tu', so that the stability of the adhesion between the side washer 332 and the chassis 1 can be enhanced to a greater extent. Preferably, the side washer 332 is a plane symmetric structure.

[0033] The hidden part 3322 is located inside the chassis 1. Part of the top surface of the protruding part 3321 is adhesively bonded to the inner top surface of the notch 11. To improve the stability of the connection between the side washer 332 and the chassis 1 to a greater extent, optionally, at least one side surface of the protruding part 3321 is adhesively bonded to the side of the notch 11. Preferably, one side surface of the protruding part 3321 is adhesively bonded to one side of the notch 11, and the other side surface of the protruding part 3321 is adhesively bonded to the other side of the notch 11. That is to say, the two side surfaces of the protruding part 3321 are respectively adhesively fixed to the two sides of the notch 11.

[0034] To prevent the diaphragm assembly from colliding with the edge washer 332 during vibration and thus generating noise, optionally, the inner side area of ​​the top surface of the edge washer 332 is provided with a relief groove 3324.

[0035] In one or more embodiments, the miniature loudspeaker further includes a centering support 4, which includes an inner mounting portion 41, a cantilever portion 42, and an outer mounting portion 43 connected in sequence. The outer mounting portion 43 is connected to the frame 1, and the inner mounting portion 41 is connected to the voice coil 2. When the miniature loudspeaker is viewed from a low angle, a portion of the centering support 4 overlaps with the extension portion 3323 (e.g., ...). Figure 2 As shown in the diagram, the presence of the extension 3323 does not affect the deformation of the centering support 4, nor does it collide or interfere with the centering support 4. Specifically, when viewing the miniature speaker from a low angle, a portion of the area at the connection between the cantilever 42 and the external mounting portion 43 overlaps with the extension 3323.

[0036] 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; A magnetic circuit assembly, the magnetic circuit assembly including a side washer, the side washer including a vertically connected protrusion and a recess, one end of the protrusion away from the recess extending into the notch and being bonded and fixed to the basin stand, at least one side of the protrusion having an extension, the extension being located inside the basin stand and bonded to the basin stand.

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: It also includes a centering support and a voice coil. The centering support includes an inner mounting part, a cantilever part, and an outer mounting part connected in sequence. The outer mounting part is connected to the frame, and the inner mounting part is connected to the voice coil. When viewing the miniature loudspeaker from a low angle, a portion of the centering support overlaps with the extension.

8. The miniature loudspeaker according to claim 7, characterized in that: When viewing the miniature speaker from a low angle, a portion of the area where the cantilever and the external mounting portion connect overlaps with the extension portion.

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