Miniature speaker

Abstract

This utility model discloses a miniature loudspeaker, including a frame, a yoke, and a grille. The yoke includes a body with a flange connected to it. The outer wall of the flange contacts the inner wall of the frame for relative positioning. The grille includes a main body with a folded edge. The folded edge has a first vent hole offset from the flange and has a recessed portion that abuts against the outer wall of the flange. Sealant is applied to the gap between the folded edge and the frame. In this miniature loudspeaker, the sealant connecting the folded edge and the frame does not easily penetrate the internal space, thus ensuring the sound performance of the miniature loudspeaker.

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] Figures 1 to 3 The diagram illustrates a miniature speaker structure in the prior art, in which the yoke 6 is positioned relative to the frame 2 by means of the flanges 62 on its opposite sides. Specifically, the outer wall surface of the flanges 62 of the yoke 6 is in contact with the inner wall surface of the frame 2 to achieve relative positioning. To prevent external sound-absorbing particles from intruding into the miniature speaker and causing noise, a mesh cover 1 is added to the miniature speaker. The folded edge 12 of the mesh cover 1 has a first vent hole 13 with a diameter smaller than that of the sound-absorbing particles. To ensure the accuracy of the mesh cover 1 assembly and positioning, the inner wall surface of the folded edge 12 of the mesh cover 1 contacts the outer wall surface of the flange 62 of the yoke 6, thereby achieving relative positioning with the yoke 6. However, when sealing the gap between the folded edge 12 and the frame 2 with glue, because the folded edge 12 is too close to the inner wall surface of the frame 2, there is a situation where glue overflows into the internal space of the miniature speaker during the manufacturing process. The glue that overflows into the internal space of the miniature speaker adheres to the inner side of the frame 2 or the parts of the vibration component (such as the centering support plate 4), affecting the sound performance of the miniature speaker. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a miniature speaker in which the sealant does not easily penetrate the internal space.

[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] The yoke includes a body connected to a flange, the outer wall surface of which contacts the inner wall surface of the basin stand to achieve relative positioning.

[0007] The mesh cover includes a main body with a folded edge. The folded edge has a first ventilation hole that is offset from the flange. The folded edge has an inwardly recessed portion that is recessed towards the flange. The inwardly recessed portion abuts against the outer wall surface of the flange. Sealant is provided at the gap between the folded edge and the basin stand.

[0008] In one embodiment, there is a height difference between the recess and the body.

[0009] In one embodiment, the recess is a stamped convex shape.

[0010] In one embodiment, the concave portion is a flat-topped convex bulge that contacts the flanged surface.

[0011] In one embodiment, the recess extends to the junction of the body and the folded edge.

[0012] In one embodiment, the flanges are connected to opposite sides of the main body, and the folded edges are connected to opposite sides of the main body.

[0013] In one embodiment, the same side of the body has at least two flanges spaced apart, and the same side of the body has at least two folded edges spaced apart.

[0014] In one embodiment, the corner of the body is provided with a notch, and the corner of the body is provided with a second vent hole, the second vent hole being provided corresponding to the notch.

[0015] The beneficial effects of this utility model are as follows: by setting the first vent hole on the folded edge of the mesh cover to be offset from the flange of the yoke, and by setting an indented part in the folded edge in the direction of the flange, the mesh cover is positioned by contacting the outer wall surface of the flange. At the same time, the gap between the folded edge and the frame is sealed with sealant. Due to the design of the indented part, a buffer distance is naturally left between the folded edge and the inner wall surface of the frame for the sealant to overflow, which effectively avoids the risk of the sealant overflowing into the internal space of the miniature speaker during the application of sealant. This prevents the sealant from adhering to the inside of the frame or the supporting components, ensuring that the sound performance of the miniature speaker is not affected, and improving the reliability and yield of the product. 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 An exploded view of a miniature loudspeaker in the prior art;

[0018] Figure 2 Cross-section of a miniature loudspeaker in the prior art Figure 1 ;

[0019] Figure 3 Cross-section of a miniature loudspeaker in the prior art Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the overall structure of the miniature loudspeaker according to Embodiment 1 of this utility model;

[0021] Figure 5This is a schematic diagram of the structure of the mesh cover in the miniature loudspeaker according to Embodiment 1 of this utility model;

[0022] Figure 6 A cross-sectional view of the miniature loudspeaker according to Embodiment 1 of this utility model. Figure 1 ;

[0023] Figure 7 A cross-sectional view of the miniature loudspeaker according to Embodiment 1 of this utility model. Figure 2 ;

[0024] Figure 8 This is a schematic diagram of the structure of the mesh cover in the miniature loudspeaker of Embodiment 2 of this utility model;

[0025] Figure 9 This is a cross-sectional view of the miniature loudspeaker according to Embodiment 2 of this utility model;

[0026] Figure 10 This is a schematic diagram of the overall structure of the miniature loudspeaker according to Embodiment 3 of this utility model;

[0027] Figure 11 This is a schematic diagram of the structure of the mesh cover in the miniature loudspeaker of Embodiment 3 of this utility model.

[0028] Explanation of icon numbers:

[0029] 1. Mesh cover; 11. Main body; 12. Folded edge; 121. Concave part; 13. First vent hole; 14. Second vent hole;

[0030] 2. Sink stand;

[0031] 3. Voice coil;

[0032] 4. Centering support;

[0033] 5. Diaphragm assembly;

[0034] 6. Yoke; 61. Body; 62. Flange;

[0035] 7. Central magnetic structure;

[0036] 8. Edge magnetic structure;

[0037] 9. Buffer distance. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Furthermore, if the meaning of "and / or" in the entire text is to include three parallel solutions, taking "and A / or B" as an example, it includes solution A, solution B, and a solution that simultaneously satisfies both A and B. 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 cannot be implemented, 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.

[0043] 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.

[0044] Example 1

[0045] Please refer to Figures 4 to 7One embodiment of this utility model is a miniature loudspeaker, comprising a grille 1, a frame 2, and a magnetic circuit assembly and a vibration assembly respectively connected to the frame 2. The vibration assembly includes a voice coil 3, a support component, and a diaphragm assembly 5. The diaphragm assembly 5 connects the frame 2 and the voice coil 3, and the support component connects the voice coil 3 and the frame 2. The support component is at least one of a centering support plate 4 and a secondary diaphragm. The magnetic circuit assembly includes a yoke 6 and a central magnetic structure 7 and a side magnetic structure 8 respectively disposed on the yoke 6. A space is formed between the central magnetic structure 7 and the side magnetic structure 8 for the voice coil 3 to pass through. The movable magnetic gap, the yoke 6 includes a body 61, the body 61 is connected to a flange 62, the outer wall surface of the flange 62 is in contact with the inner wall surface of the basin stand 2 to achieve relative positioning; the mesh cover 1 includes a body 11, the body 11 is provided with a folded edge 12, the folded edge 12 has a first vent hole 13 that is offset from the flange 62, the folded edge 12 has an inner recess 121 that is recessed toward the flange 62, the inner recess 121 abuts against the outer wall surface of the flange 62 to achieve relative positioning, and the gap between the folded edge 12 and the basin stand 2 is provided with sealant.

[0046] It is easy to understand that there is a preset buffer distance 9 between the inner wall surface of the folded edge 12 and the inner wall surface of the basin frame 2 in the horizontal direction. This buffer distance 9 is used to provide excess glue allowance.

[0047] In one or more embodiments, the body 61 is fixedly connected to the main body 11, for example by bonding or welding.

[0048] In this embodiment, there is a height difference between the recessed portion 121 and the body 61, that is, there is a gap between the recessed portion 121 and the body 61, and the recessed portion 121 can be formed by stamping process.

[0049] The body 61 has flanges 62 connected to opposite sides, and the main body 11 has folded edges 12 connected to opposite sides. Optionally, the body 61 has at least two flanges 62 spaced apart on the same side, and the main body 11 has at least two folded edges 12 spaced apart on the same side.

[0050] The corner of the body 61 is provided with a notch, and the corner of the body 11 is provided with a second vent hole 14, which is provided corresponding to the notch.

[0051] Example 2

[0052] Please refer to Figure 8 and Figure 9The second embodiment of this utility model is a parallel technical solution to the first embodiment. The difference between the two embodiments is that the concave part 121 is a stamped convex hull; preferably, the concave part 121 is a flat-headed convex hull, which contacts the flange 62 surface, so that the mesh cover 1 and the yoke 6 can achieve more stable contact and positioning.

[0053] Example 3

[0054] Please refer to Figure 10 and Figure 11 The third embodiment of this utility model is a parallel technical solution to the first embodiment, and the difference between the two is that the concave portion 121 extends to the connection between the main body 11 and the folded edge 12.

[0055] 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 miniature loudspeaker, characterized in that: include Sink stand; The yoke includes a body connected to a flange, the outer wall surface of which contacts the inner wall surface of the basin stand to achieve relative positioning. The mesh cover includes a main body with a folded edge. The folded edge has a first ventilation hole that is offset from the flange. The folded edge has an inwardly recessed portion that is recessed towards the flange. The inwardly recessed portion abuts against the outer wall surface of the flange. Sealant is provided at the gap between the folded edge and the basin stand.

2. The miniature loudspeaker according to claim 1, characterized in that: There is a height difference between the recessed portion and the body.

3. The miniature loudspeaker according to claim 1, characterized in that: The concave portion is a stamped convex shape.

4. The miniature loudspeaker according to claim 3, characterized in that: The concave portion is a flat-headed convex bulge, which contacts the flanged surface.

5. The miniature loudspeaker according to claim 1, characterized in that: The recessed portion extends to the connection between the body and the folded edge.

6. The miniature loudspeaker according to claim 1, characterized in that: The flanges are connected to opposite sides of the main body, and the folded edges are connected to opposite sides of the main body.

7. The miniature loudspeaker according to claim 6, characterized in that: The same side of the main body has at least two flanges spaced apart, and the same side of the main body has at least two folded edges spaced apart.

8. The miniature loudspeaker according to claim 1, characterized in that: The main body has a notch at one corner and a second vent hole at one corner, the second vent hole being provided corresponding to the notch.

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