Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand, a magnetic circuit assembly, a diaphragm assembly and a centering support chip, the magnetic circuit assembly is connected with the basin stand, the magnetic circuit assembly comprises a yoke and a central magnetic structure arranged on the yoke, and the central magnetic structure is provided with a through hole penetrating up and down; the diaphragm assembly is connected with the basin frame; the centering support chip is arranged corresponding to the through hole, the centering support chip comprises a first fixing part, a cantilever part and a second fixing part which are connected in sequence, the first fixing part is fixedly connected with the vibrating diaphragm assembly, the second fixing part is fixedly connected with the yoke, the cantilever part comprises at least one deformation arm, and an opening of the deformation arm faces the central magnetic structure. The centring disk adopts a single cantilever design, and the deformation direction of the cantilever part of the centring disk is along the vibration direction of the diaphragm assembly, so that the vertical space of the sounding unit is fully utilized, and the length of the through hole in the central magnetic structure can be set to be shorter, thereby enabling the central magnetic structure to maintain a larger size, and enabling the sounding unit to be more compact. And the performance of the sounding unit is enhanced to a greater extent.

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] In recent years, consumer electronics products have developed rapidly, and electronic devices such as smartphones and VR devices have gained consumer recognition and achieved commercial success.

[0003] To improve the performance of the driver unit, existing technologies employ an internal centering support design, placing the centering support inside the voice coil to reduce the space occupied by the opposite magnetic structure, as illustrated in patent application number 202410306532.1. However, in this type of driver unit, the centering support still uses a multi-cantilever design, which undoubtedly occupies a significant amount of space for the central magnetic structure, thus limiting further improvements in the driver unit's performance. 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] Sink stand;

[0007] A magnetic circuit assembly connected to the basin frame, the magnetic circuit assembly including a yoke and a central magnetic structure disposed on the yoke, the central magnetic structure having a through hole running vertically through the top and bottom;

[0008] Diaphragm assembly, the diaphragm assembly being connected to the frame;

[0009] A centering support is provided corresponding to the through hole. The centering support includes a first fixing part, a cantilever part, and a second fixing part connected in sequence. The first fixing part is fixedly connected to the diaphragm assembly, and the second fixing part is fixedly connected to the yoke. The cantilever part includes at least one deformation arm, and the opening of the deformation arm faces the central magnetic structure.

[0010] In one embodiment, the deformable arm is V-shaped or U-shaped.

[0011] In one embodiment, there are multiple deformable arms, with adjacent deformable arms connected together and their openings facing opposite directions.

[0012] In one embodiment, the number of the first fixing parts is one or more.

[0013] In one embodiment, there are two first fixing parts, and the two first fixing parts extend in opposite directions.

[0014] In one embodiment, the assembly further includes a voice coil disposed on the diaphragm assembly, and the first fixing part has a first pad for welding the voice coil; the yoke has a through hole through which the second fixing part passes, the through hole communicating with the through hole, the second fixing part being fixed to the bottom surface of the yoke, and the second fixing part having a second pad electrically connected to the first pad.

[0015] In one embodiment, the bottom surface of the yoke is provided with a pressure groove, at least a portion of the second fixing part is located in the pressure groove, and the pressure groove communicates with the peripheral wall of the yoke.

[0016] In one embodiment, the diaphragm assembly includes a diaphragm and a dome connected to the diaphragm.

[0017] In one embodiment, the central magnetic structure includes a central magnet and a central washer, the central magnet connecting the yoke and the central washer, and the through hole includes a first hole on the central washer and a second hole on the central magnet.

[0018] In one embodiment, the top surface of the central washer is further provided with a clearance groove for avoiding the first fixing part, and the clearance groove is connected to the first hole.

[0019] The beneficial effects of this utility model are as follows: the centering support is located inside the voice coil, which allows for a larger volume of the side magnetic structure; the centering support adopts a single cantilever design, and the deformation direction of the cantilever part of the centering support is along the vibration direction of the diaphragm assembly, making full use of the vertical space of the sound unit, which allows for a shorter length of the through hole on the central magnetic structure, thereby maintaining a larger volume of the central magnetic structure, thereby improving the BL value of the sound unit, giving the sound unit a stronger driving force and higher sensitivity, and enhancing the performance of the sound unit to a greater extent. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is an exploded view of the sound-generating unit according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a cross-sectional view of the sound-generating unit according to Embodiment 1 of this utility model;

[0023] 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;

[0024] Figure 4 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; 211. Pressure groove; 22. Central magnetic structure; 221. Central magnet; 222. Central washer; 23. Side magnetic structure; 24. Through hole; 241. First hole; 242. Second hole; 243. Clearance groove;

[0028] 3. Diaphragm assembly; 31. Diaphragm; 32. Dome;

[0029] 4. Voice coil;

[0030] 5. Centering support; 51. First fixing part; 511. First solder pad; 52. Cantilever part; 521. Deformation arm; 53. Second fixing part. 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 3 The 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 magnetic circuit assembly 2 is connected to the frame 1. 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. The side magnetic structure 23 is arranged around the central magnetic structure 22, and a magnetic gap is formed between the side magnetic structure 23 and the central magnetic structure 22. The central magnetic structure 22 has a through hole 24 extending vertically. The diaphragm assembly 3 is connected to the frame 1, and the voice coil 4 is disposed on the diaphragm assembly 3 and corresponding to the magnetic gap. In this configuration, the diaphragm assembly 3 includes a diaphragm 31 and a dome 32 connecting the diaphragm 31, and the voice coil 4 is connected to the dome 32. The centering support 5 is disposed corresponding to the through hole 24. The centering support 5 includes a first fixing part 51, a cantilever part 52, and a second fixing part 53 connected in sequence. The first fixing part 51 is fixedly connected to the diaphragm assembly 3, and the second fixing part 53 is fixedly connected to the yoke 21. The cantilever part 52 includes at least one deformation arm 521, and the opening of the deformation arm 521 faces the central magnetic structure 22. The centering support 5 can provide support for the diaphragm assembly 3, thereby improving the polarization phenomenon of the voice coil 4.

[0039] In this embodiment, the first fixing part 51 is fixed on the dome 32.

[0040] The edge magnetic structure 23 includes an edge magnet and an edge washer. The edge magnet connects the edge washer to the yoke 21, and the edge washer connects to the basin stand 1. Optionally, the basin stand 1 is connected to the yoke 21. In a preferred embodiment, the edge magnet has a closed ring frame structure. The edge magnet can be a one-piece structure or a closed ring frame structure formed by multiple sub-magnets.

[0041] The deformable arm 521 is V-shaped or U-shaped. Preferably, there are multiple deformable arms 521, and two adjacent deformable arms 521 are connected with their openings facing opposite directions.

[0042] The number of the first fixing part 51 is one or more. In this embodiment, the number of the first fixing part 51 is two. The two first fixing parts 51 extend in opposite directions. In order to make the diaphragm assembly 3 more balanced, it is preferable that the two first fixing parts 51 form a centrally symmetrical structure.

[0043] To facilitate processing and manufacturing, the centering support 5 is a one-piece structure formed by integral processing.

[0044] The central magnetic structure 22 includes a central magnet 221 and a central washer 222. The central magnet 221 connects the yoke 21 and the central washer 222. The through hole 24 includes a first hole 241 on the central washer 222 and a second hole 242 on the central magnet 221. To prevent collision between the first fixing part 51 and the central washer 222, the top surface of the central washer 222 is also provided with a clearance groove 243 for avoiding the first fixing part 51. The clearance groove 243 communicates with the first hole 241.

[0045] To facilitate the power supply of the voice coil 4 of the sound-generating unit, optionally, the first fixing part 51 is provided with a first solder pad 511 for welding to the voice coil 4; the yoke 21 has a through hole through which the second fixing part 53 passes, the through hole is connected to the through hole 24, the second fixing part 53 is fixed to the bottom surface of the yoke 21, and the second fixing part 53 is provided with a second solder pad that is electrically connected to the first solder pad 511. When an external power source connects to the second solder pad, the voice coil 4 can be powered.

[0046] The bottom surface of the yoke 21 is provided with a pressure groove 211, and at least a portion of the second fixing part 53 is located in the pressure groove 211. The pressure groove 211 is connected to the peripheral wall of the yoke 21.

[0047] Example 2

[0048] Please refer to Figure 4The second embodiment of this utility model is a parallel technical solution to the first embodiment. The difference between the two embodiments is that the centering support piece 5 in this embodiment has only one first fixing part 51, and the first fixing part 51 is provided with two first solder pads 511.

[0049] 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 sound-generating unit, characterized in that: include Sink stand; A magnetic circuit assembly connected to the basin frame, the magnetic circuit assembly including a yoke and a central magnetic structure disposed on the yoke, the central magnetic structure having a through hole running vertically through the top and bottom; Diaphragm assembly, the diaphragm assembly being connected to the frame; A centering support is provided corresponding to the through hole. The centering support includes a first fixing part, a cantilever part, and a second fixing part connected in sequence. The first fixing part is fixedly connected to the diaphragm assembly, and the second fixing part is fixedly connected to the yoke. The cantilever part includes at least one deformation arm, and the opening of the deformation arm faces the central magnetic structure.

2. The sound-generating unit according to claim 1, characterized in that: The deformable arm is V-shaped or U-shaped.

3. The sound-generating unit according to claim 1, characterized in that: The number of deformation arms is multiple, and two adjacent deformation arms are connected with their openings facing opposite directions.

4. The sound-generating unit according to claim 1, characterized in that: The number of the first fixing parts is one or more.

5. The sound-generating unit according to claim 4, characterized in that: There are two first fixing parts, and the two first fixing parts extend in opposite directions.

6. The sound-generating unit according to claim 1, characterized in that: It also includes a voice coil disposed on the diaphragm assembly, and the first fixing part is provided with a first pad for welding to the voice coil; the yoke has a through hole through which the second fixing part passes, the through hole communicating with the through hole, the second fixing part is fixed to the bottom surface of the yoke, and the second fixing part is provided with a second pad electrically connected to the first pad.

7. The sound-generating unit according to claim 6, characterized in that: The bottom surface of the yoke is provided with a pressure groove, and at least a portion of the second fixing part is located in the pressure groove, which is connected to the peripheral wall of the yoke.

8. The sound-generating unit according to claim 7, characterized in that: The diaphragm assembly includes a diaphragm and a dome connected to the diaphragm.

9. The sound-generating unit according to claim 1, characterized in that: The central magnetic structure includes a central magnet and a central washer, the central magnet connecting the yoke and the central washer, and the through hole includes a first hole on the central washer and a second hole on the central magnet.

10. The sound-generating unit according to claim 9, characterized in that: The top surface of the central washer is also provided with a clearance groove for avoiding the first fixing part, and the clearance groove is connected to the first hole.

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