Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a vibrating diaphragm assembly, a voice coil and a centering disk, and is characterized in that the vibrating diaphragm assembly is provided with a supporting part; the voice coil comprises a body and a lead which are connected, and the body is connected with the vibrating diaphragm assembly; the centering disk comprises a first fixing part, a deformation part, a second fixing part and a vertical surface part which are connected in sequence, the first fixing part is provided with a first bonding pad, the vertical surface part is fixedly connected with the side surface of the supporting part, the vertical surface part is perpendicular to the second fixing part, the vertical surface part is provided with a second bonding pad conducted with the first bonding pad, and the deformation part is connected with the second bonding pad. And the second bonding pad is welded and conducted with the lead. The sound production unit has high acoustic performance.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic converter technology, and in particular to a sound generating unit. Background Technology

[0002] With the development of science and technology, portable electronic products (such as mobile phones, handheld game consoles, navigation devices, or handheld multimedia entertainment devices) are widely used in people's daily lives. Among these portable electronic products, the electro-acoustic transducer is an essential component. The quality of voice directly affects the user experience when using these portable electronic products, so the requirements for the sound-generating unit are getting higher and higher.

[0003] The sound-generating unit typically uses a centering support, which serves as a bridge for conduction. The centering support has pads for soldering the leads of the voice coil. These pads are generally set parallel to the yoke of the magnetic circuit assembly. This results in the magnetic circuit assembly needing to be left unsupported at the corresponding pad positions, which limits the size of the magnetic circuit assembly and prevents it from being enlarged. Consequently, the magnetic field strength of the magnetic circuit assembly is reduced, the BL value is lowered, and the acoustic performance of the sound-generating unit is affected. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a high-performance sound generating unit.

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

[0006] A diaphragm assembly having a support portion;

[0007] A voice coil, comprising a connected body and leads, the body being connected to the diaphragm assembly;

[0008] The centering support includes a first fixing part, a deformation part, a second fixing part, and a vertical part connected in sequence. The first fixing part is provided with a first pad. The vertical part is fixedly connected to the side of the support part. The vertical part is perpendicular to the second fixing part. The vertical part is provided with a second pad that is in communication with the first pad. The second pad is soldered and connected to the lead wire.

[0009] In one embodiment, the bottom end of the support portion is fixedly connected to the second fixing portion.

[0010] In one embodiment, a portion of the lead wire is fixedly connected to the diaphragm assembly.

[0011] In one embodiment, a magnetic circuit assembly is further included, the magnetic circuit assembly including a yoke and a central magnetic structure disposed on the yoke, wherein the first fixing part, the deformation part and the second fixing part are all disposed parallel to the top surface of the yoke, and the vertical part is perpendicular to the top surface of the yoke.

[0012] In one embodiment, the central magnetic structure has a through-hole that runs vertically through the center, and a fixing platform is provided inside the through-hole. The first fixing part is fixed to the fixing platform, and the deformable part and the second fixing part are both located inside the through-hole.

[0013] In one embodiment, the fixing platform is made of insulating material, the yoke is provided with a mounting port for mounting the fixing platform, the fixing platform is embedded with a conductive element, the bottom of the conductive element is exposed on the bottom surface of the yoke, and the top of the conductive element is welded to the first pad for conduction.

[0014] In one embodiment, the top surface of the central magnetic structure is provided with a clearance groove for avoiding the lead wire.

[0015] In one embodiment, the device further includes a frame connected to the outer edge of the diaphragm assembly, the centering support being located outside the voice coil, and the first fixing part being fixedly connected to the frame.

[0016] In one embodiment, the diaphragm assembly includes a connected diaphragm and a dome, with the support located on the dome.

[0017] In one embodiment, the diaphragm assembly further includes a cover plate, the dome has an opening, the top end of the support is connected to the edge of the opening, and the cover plate is connected to the dome to close the opening.

[0018] The beneficial effects of this utility model are as follows: In this sound-generating unit, the second solder pad used for welding the centering support plate to the lead wire of the voice coil is set vertically, which greatly reduces the space occupied by the second solder pad for the magnetic circuit assembly, so that the overall volume of the magnetic circuit assembly can be set larger, thereby improving the magnetic field strength of the sound-generating unit, enhancing the BL value, and improving the acoustic performance of the sound-generating unit. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is an exploded view of the sound-generating unit according to Embodiment 1 of this utility model;

[0021] Figure 2 This is a cross-sectional view of the sound-generating unit according to Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of a portion of the structure of the sound-generating unit in Embodiment 1 of this utility model. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of a portion of the structure of the sound-generating unit in Embodiment 1 of this utility model. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of a portion of the sound-generating unit in Embodiment 2 of this utility model.

[0025] Explanation of icon numbers:

[0026] 1. Pot stand;

[0027] 2. Magnetic circuit assembly; 21. Yoke; 22. Central magnetic structure; 221. Through-hole; 222. Clearance groove; 23. Side magnetic structure; 24. Fixing platform; 241. Conductive component;

[0028] 3. Diaphragm assembly; 31. Support; 32. Diaphragm; 33. Dome; 34. Cover plate;

[0029] 4. Voice coil; 41. Body; 42. Lead wire;

[0030] 5. Centering support; 51. First fixing part; 52. Deformation part; 53. Second fixing part; 54. Vertical part; 55. First solder pad; 56. Second solder pad. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Example 1

[0038] Please refer to Figures 1 to 4The first embodiment of this utility model is as follows: a sound-generating unit, including a frame 1, a magnetic circuit assembly 2, a diaphragm assembly 3, a voice coil 4, and a centering support 5. The outer edge of the diaphragm assembly 3 is connected to the frame 1, and the diaphragm assembly 3 has a support portion 31. The voice coil 4 includes a connected body 41 and a lead wire 42, and the body 41 is connected to the diaphragm assembly 3. The magnetic circuit assembly 2 includes a yoke 21 and a central magnetic structure 22 and a side magnetic structure 23 respectively disposed on the yoke 21. A magnetic gap is formed between the central magnetic structure 22 and the side magnetic structure 23 for the voice coil 4 to move. The side magnetic structure 23 and / or the yoke 21 are connected to the frame 1. The centering support 5 includes a first fixing part 51, a deformation part 52, a second fixing part 53, and a vertical part 54 connected in sequence. The first fixing part 51 is provided with a first pad 55. The vertical part 54 is fixedly connected to the side of the support part 31. The vertical part 54 is perpendicular to the second fixing part 53. The vertical part 54 is provided with a second pad 56 that is conductive to the first pad 55. The second pad 56 is soldered and conductive to the lead wire 42. In detail, the first fixing part 51, the deformation part 52, and the second fixing part 53 are all arranged parallel to the top surface of the yoke 21, and the vertical part 54 is perpendicular to the top surface of the yoke 21.

[0039] The edge magnetic structure 23 includes an edge magnet and an edge washer. The edge magnet connects the edge washer to the yoke 21. In other embodiments, the yoke 21 has a bent magnetically conductive flange, which replaces at least a portion of the edge magnetic structure 23 to form the magnetic gap with the central magnetic structure 22. The central magnetic structure 22 includes a central magnet and a central washer. The central magnet connects the yoke 21 to the central washer.

[0040] To improve the structural stability of the sound-generating unit, it is preferable that the bottom end of the support part 31 is fixedly connected to the second fixing part 53.

[0041] A portion of the lead wire 42 is fixedly connected to the diaphragm assembly 3. This prevents the lead wire 42 from colliding with the magnetic circuit assembly 2 and generating noise when the sound-generating unit is working, thus ensuring the acoustic performance of the sound-generating unit.

[0042] In this embodiment, the central magnetic structure 22 has a through-hole 221 extending vertically. A fixing platform 24 is provided within the through-hole 221. The first fixing part 51 is fixed on the fixing platform 24, and the deformable part 52 and the second fixing part 53 are both located within the through-hole 221. It is easy to understand that the sound-generating unit in this embodiment adopts a built-in centering support plate 5 architecture, which allows for a larger overall volume of the side magnetic structure 23, further improving the performance of the sound-generating unit.

[0043] Optionally, the fixing platform 24 is made of insulating material, and the yoke 21 is provided with a mounting port for mounting the fixing platform 24. The fixing platform 24 is embedded with a conductive element 241, the bottom of the conductive element 241 is exposed on the bottom surface of the yoke 21 to conduct external power, and the top of the conductive element 241 is welded to the first solder pad 55 for conduction.

[0044] In one or more embodiments, the top surface of the central magnetic structure 22 is provided with a clearance groove 222 for avoiding the lead wire 42.

[0045] The diaphragm assembly 3 includes a connected diaphragm 32 and a dome 33, with the support portion 31 located on the dome 33. In this embodiment, the diaphragm assembly 3 further includes a cover plate 34. The dome 33 has an opening, and the top of the support portion 31 is connected to the edge of the opening. The cover plate 34 connects to the dome 33 to close the opening. During the processing of the dome 33, the support portion 31 can be formed by bending a portion of the material that would otherwise need to be reduced during the processing of the opening on the dome 33.

[0046] Example 2

[0047] Please refer to Figure 5 Embodiment 2 of this utility model is a parallel technical solution to Embodiment 1, the difference being that: the centering support 5 is located outside the voice coil 4, and the first fixing part 51 is fixedly connected to the frame 1. In this case, the sound-generating unit adopts an external structure of the centering support 5.

[0048] 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 sound emitting unit, characterized by: The application relates to a loudspeaker, which comprises a diaphragm assembly, a voice coil, a centering sheet and a magnetic circuit assembly. The diaphragm assembly has a supporting part. The voice coil comprises a body and a lead wire, and the body is connected to the diaphragm assembly. The centering sheet comprises a first fixing part, a deformation part, a second fixing part and a vertical part in sequence, the first fixing part is provided with a first soldering pad, the vertical part is fixedly connected with the side surface of the supporting part, the vertical part is perpendicular to the second fixing part, the vertical part is provided with a second soldering pad which is in conduction with the first soldering pad, and the second soldering pad is in conduction with the lead wire.

2. The sound producing unit of claim 1, wherein: The bottom end of the supporting part is fixedly connected with the second fixing part.

3. The sound producing unit of claim 1, wherein: Part of the lead wire is fixedly connected with the diaphragm assembly.

4. The sound producing unit of claim 1, wherein: The magnetic circuit assembly comprises a yoke and a center magnetic structure arranged on the yoke, the first fixing part, the deformation part and the second fixing part are arranged parallel to the top surface of the yoke, and the vertical part is perpendicular to the top surface of the yoke.

5. The sound producing unit of claim 4, wherein: The center magnetic structure has a through hole penetrating from top to bottom, a fixing table is arranged in the through hole, the first fixing part is fixed on the fixing table, and the deformation part and the second fixing part are arranged in the through hole.

6. The sound producing unit of claim 5, wherein: The fixing table is made of insulating material, the yoke is provided with a mounting hole for mounting the fixing table, the fixing table is embedded with a conductive part, the bottom of the conductive part is exposed on the bottom surface of the yoke, and the top of the conductive part is in conduction with the first soldering pad.

7. The sound producing unit of claim 5, wherein: The top surface of the center magnetic structure is provided with an avoiding groove for avoiding the lead wire.

8. The sound producing unit of claim 4, wherein: The loudspeaker further comprises a basin frame connected with the outer edge of the diaphragm assembly, the centering sheet is arranged outside the voice coil, and the first fixing part is fixedly connected with the basin frame.

9. The sound producing unit of claim 1, wherein: The diaphragm assembly comprises a diaphragm and a ball top in sequence, and the supporting part is arranged on the ball top.

10. The sound producing unit of claim 9, wherein: The diaphragm assembly further comprises a cover plate, the ball top is provided with a window, the top end of the supporting part is connected with the edge of the window, and the cover plate is connected with the ball top to close the window.

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