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 inner top surface of the notch is provided with a plurality of grooves extending upwards; the magnetic circuit assembly comprises a yoke and an edge magnetic structure, the edge magnetic structure is integrally in a convex shape, a part of area of the edge magnetic structure extends into the notch, the edge magnetic structure comprises edge magnetic steel and an edge washer, the edge magnetic steel is connected with the edge washer and the yoke, the top face of the edge washer is provided with a protruding block extending into the groove, and the top face and the side face of the protruding block are respectively bonded with the basin frame. And the top surface of the edge washer is bonded with the inner top surface of the notch. The miniature loudspeaker is novel in structure, the basin stand is provided with the groove, the side washer is provided with the protruding block extending into the groove, and all faces of the protruding block are 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. In addition, the magnetic conduction effect of the edge washer is enhanced due to the existence of the convex blocks.

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 inner top surface of the notch has several upwardly extending grooves.

[0007] A magnetic circuit assembly includes a yoke and a side magnetic structure. The side magnetic structure is generally convex in shape, with a portion of the side magnetic structure extending into the notch. The side magnetic structure includes a side magnet and a side washer. The side magnet connects the side washer and the yoke. The top surface of the side washer has a protrusion extending into the groove. The top and side surfaces of the protrusion are respectively bonded to the basin frame. The top surface of the side washer is bonded to the inner top surface of the notch.

[0008] 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.

[0009] In one embodiment, the number of protrusions on the edge is multiple, and the multiple protrusions are arranged in a row at intervals.

[0010] In one embodiment, the washer includes a protruding portion and a concealed portion connected together. The protruding portion is located in the notch, and the concealed portion is located inside the basin stand. The length of the protruding portion is less than the length of the concealed portion, so that the washer is convex in shape. The protrusion is located on the top surface of the protruding portion, and the top surface of the protruding portion is bonded and fixed to the basin stand.

[0011] In one embodiment, at least one end of the protrusion is bonded to the side of the notch.

[0012] In one embodiment, one end of the protrusion is bonded to one side of the notch, and the other end of the protrusion is bonded to the other side of the notch.

[0013] In one embodiment, a first adhesive is provided between the top of the protrusion and the top edge of the notch, and a second adhesive is provided between the end of the protrusion and the side edge of the notch, wherein the first adhesive is connected to the second adhesive.

[0014] In one embodiment, the protrusion and the concealed portion are integrally formed as a single structure.

[0015] In one embodiment, the bump and the edge washer are integrally formed into a single structure.

[0016] In one embodiment, the inner region of the top surface of the edge washer is provided with a clearance groove.

[0017] The beneficial effects of this invention are as follows: This miniature loudspeaker has a novel structure. The frame has a groove, and the washer has protrusions extending into the groove. Each surface of the protrusions is bonded to the frame, thereby increasing the bonding area between the frame and the washer, which improves the bonding and fixing effect, and thus enhances the structural stability of the miniature loudspeaker. Furthermore, the presence of the protrusions 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 enhancing 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 front view of the miniature loudspeaker according to Embodiment 1 of this utility model;

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

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

[0022] Explanation of icon numbers:

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

[0024] 2. Magnetic circuit assembly; 21. Yoke; 22. Side magnetic structure; 221. Side magnet; 222. Side washer; 2221. Bump; 2222. Protrusion; 2223. Concealed part; 2224. Clearance groove; 23. Central magnetic structure;

[0025] 31. Diaphragm assembly; 32. Voice coil;

[0026] 41. First adhesive joint; 42. Second adhesive joint. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] Example 1

[0034] Please refer to Figures 1 to 3 One embodiment of this utility model is a miniature loudspeaker, comprising a frame 1, a vibration assembly, and a magnetic circuit assembly 2. The vibration assembly includes a connected diaphragm assembly 31 and a voice coil 32. The voice coil 32 is located inside the frame 1, and the diaphragm assembly 31 is connected to the frame 1. The frame 1 has a notch 11 that communicates with the bottom surface of the frame 1. The inner top surface of the notch 11 has several upwardly extending grooves 12. The magnetic circuit assembly 2 includes a yoke 21, a central magnetic structure 23, and a side magnetic structure 22. The central magnetic structure 23 is located between at least one set of two oppositely arranged side magnetic structures 22, and a magnetic gap is formed between the central magnetic structure 23 and the side magnetic structures 22 for the voice coil 32 to move. The central magnetic structure 23 includes a central magnet and a central magnet. The central washer is located above the central magnet, and the central magnet connects the central washer to the yoke 21. The side magnetic structure 22 is generally convex in shape, and a portion of the side magnetic structure 22 extends into the notch 11. The side magnetic structure 22 includes a side magnet 221 and a side washer 222. The side washer 222 is located above the side magnet 221, and the side magnet 221 connects the side washer 222 to the yoke 21. The top surface of the side washer 222 has a protrusion 2221 extending into the groove 12. The protrusion 2221 and the side washer 222 are integrally formed. The top surface and side surface of the protrusion 2221 are respectively bonded to the basin frame 1, and the top surface of the side washer 222 is bonded to the inner top surface of the notch 11.

[0035] To facilitate the processing of the basin stand 1 and the assembly of the washers 222 with the basin stand 1, it is preferable that the groove 12 connects the inner wall surface and the outer wall surface of the basin stand 1.

[0036] In this embodiment, the number of protrusions 2221 on the washer 222 is one, and the protrusion 2221 is arranged corresponding to the central axis of the washer 222, which facilitates the processing and manufacturing of the washer 222. In other embodiments, the number of protrusions 2221 on the washer 222 is multiple, and the multiple protrusions 2221 are arranged in a row at intervals, which can increase the bonding area between the washer 222 and the basin stand 1 to a greater extent. In this case, the notch 11 is provided with multiple grooves 12.

[0037] In detail, the washbasin 222 includes a connected protrusion 2222 and a concealed portion 2223. The protrusion 2222 and the concealed portion 2223 are integrally formed. The protrusion 2222 is located in the notch 11, and the concealed portion 2223 is located on the inner side of the basin stand 1. The length of the protrusion 2222 is less than the length of the concealed portion 2223, so that the washbasin 222 is convex in shape. That is, the protrusion 2222 is located on the outer side of the long side of the concealed portion 2223 and connects to the long side of the concealed portion 2223. The protrusion 2221 is located on the top surface of the protrusion 2222, and the top surface of the protrusion 2222 is bonded and fixed to the basin stand 1.

[0038] To further improve the stability of the connection between the washer 222 and the basin stand 1, optionally, at least one end of the protrusion 2222 is bonded to the side of the notch 11. Preferably, one end of the protrusion 2222 is bonded to one side of the notch 11, and the other end of the protrusion 2222 is bonded to the other side of the notch 11, that is, the two ends of the protrusion 2222 correspond one-to-one with the two sides of the notch 11 and are bonded and fixed.

[0039] In one or more embodiments, a first adhesive seam 41 is formed between the top of the protrusion 2222 and the top edge of the notch 11, the first adhesive seam 41 containing a first adhesive, and a second adhesive seam 42 is formed between the end of the protrusion 2222 and the side edge of the notch 11, the second adhesive seam 42 containing a second adhesive, the first adhesive and the second adhesive are connected, that is, the first adhesive and the two second adhesives connected thereto form a U-shaped structure rotated 90° clockwise.

[0040] In some embodiments, to prevent the diaphragm assembly 31 from colliding with the edge washer 222 during vibration and thus generating noise, the inner side region of the top surface of the edge washer 222 is provided with a relief groove 2224.

[0041] 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 microspeaker, characterized by: Comprising A basin frame is provided with an opening, the opening is communicated with the bottom surface of the basin frame, the inner top surface of the opening has a plurality of grooves extending upwardly; A magnetic circuit assembly includes a yoke and a side magnetic structure, the side magnetic structure is in the shape of a convex character as a whole, part of the side magnetic structure extends into the opening, the side magnetic structure includes a side magnetic steel and a side amperometric sensor, the side magnetic steel connects the side amperometric sensor and the yoke, the top surface of the side amperometric sensor has a protrusion extending into the groove, the top surface and the side surface of the protrusion are bonded to the basin frame respectively, and the top surface of the side amperometric sensor is bonded to the inner top surface of the opening.

2. The micro speaker of claim 1, wherein: The number of protrusions on the side amperometric sensor is one, and the protrusion corresponds to the central axis of the side amperometric sensor.

3. The micro speaker of claim 1, wherein: The number of protrusions on the side amperometric sensor is multiple, and the multiple protrusions are arranged in a row.

4. The microspeaker of claim 1, wherein: The side amperometric sensor includes a protruding part and a hidden part connected to each other, the protruding part is located in the opening, the hidden part is located on the inner side of the basin frame, the length of the protruding part is less than the length of the hidden part, so that the side amperometric sensor is in the shape of a convex character, the protrusion is located on the top surface of the protruding part, and the top surface of the protruding part is bonded and fixed to the basin frame.

5. The microspeaker of claim 4, wherein: At least one end of the protruding part is bonded to the side of the opening.

6. The microspeaker of claim 5, wherein: One end of the protruding part is bonded to one side of the opening, and the other end of the protruding part is bonded to the other side of the opening.

7. The microspeaker of claim 6, wherein: The top of the protruding part and the top of the opening have a first bonding adhesive, the end of the protruding part and the side of the opening have a second bonding adhesive, and the first bonding adhesive is connected to the second bonding adhesive.

8. The micro speaker of claim 4, wherein: The protruding part and the hidden part are an integral structure formed by one-piece processing.

9. The microspeaker of claim 1, wherein: The protrusion and the side amperometric sensor are an integral structure formed by one-piece processing.

10. The microspeaker of claim 1, wherein: The inner side of the top surface of the side amperometric sensor is provided with a relief groove.

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