Sound production unit

Abstract

The utility model discloses a sounding unit, including basin stand, magnetic circuit subassembly, vibration subassembly, inside centering disk and outside centering disk, the magnetic circuit subassembly includes yoke and set center magnetic structure, inside magnetic structure and side magnetic structure in proper order from inside to outside, center magnetic structure, inside magnetic structure and side magnetic structure are connected with yoke respectively, side magnetic structure is connected with basin stand, the inside magnetic structure is connected with the inside magnetic structure, and the outside magnetic structure is connected with the outside centering disk. An inner side magnetic gap is formed between the center magnetic structure and the inner side magnetic structure, an outer side magnetic gap is formed between the inner side magnetic structure and the side magnetic structure, a mounting through hole is formed in the center of the center magnetic structure, a boss is arranged on the yoke and located in the mounting through hole, a conductive piece is arranged on the boss, and the conductive piece is provided with a conduction part exposed out of the bottom face of the yoke; the vibration assembly comprises a diaphragm assembly, and an inner side voice coil and an outer side voice coil which are respectively connected with the diaphragm assembly, the inner side voice coil is arranged corresponding to the inner side magnetic gap, and the outer side voice coil is arranged corresponding to the outer side magnetic gap; and the inner centering disk is fixedly connected with the vibrating diaphragm assembly and the boss respectively. The sounding unit is high in performance.

Description

Sound unit 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, mobile electronic devices such as mobile phones, handheld game consoles, navigation devices, and handheld multimedia entertainment devices are widely used in people's daily lives. Among these mobile electronic devices, the voice unit is an essential component. The quality of the voice directly affects the user experience when using these mobile electronic devices. Therefore, the requirements for the voice units used in these devices are becoming increasingly higher.

[0003] To achieve high performance and large amplitude, the industry has proposed a sound unit with multiple voice coils, in which multiple voice coils synchronously drive the same diaphragm assembly to vibrate. In related technologies, the conduction design of multiple voice coils is mostly achieved by using centering supports inside the sound unit to achieve mutual conduction. However, the centering supports between the voice coils will occupy a lot of space in the magnetic circuit components, thus limiting the improvement of the sound unit's performance. Summary of the Invention

[0004] The technical problem solved by this utility model is to provide a high-performance sound unit with a dual voice coil architecture.

[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 includes a yoke and a central magnetic structure, an inner magnetic structure, and a side magnetic structure arranged sequentially from the inside out. The central magnetic structure, the inner magnetic structure, and the side magnetic structure are respectively connected to the yoke. The side magnetic structure is connected to the basket frame. An inner magnetic gap is formed between the central magnetic structure and the inner magnetic structure, and an outer magnetic gap is formed between the inner magnetic structure and the side magnetic structure. A mounting through hole is provided in the center of the central magnetic structure. A boss is provided on the yoke, and the boss is located in the mounting through hole. A conductive element is provided on the boss, and the conductive element has a conductive portion exposed on the bottom surface of the yoke.

[0008] A vibration assembly, comprising a diaphragm assembly and an inner voice coil and an outer voice coil respectively connected to the diaphragm assembly, wherein the inner voice coil is disposed corresponding to the inner magnetic gap and the outer voice coil is disposed corresponding to the outer magnetic gap;

[0009] The inner centering support is fixedly connected to the diaphragm assembly and the boss respectively, and the inner centering support connects the inner voice coil and the conductive element.

[0010] An outer centering support is fixedly connected to the frame and the outer voice coil, and the outer centering support is electrically connected to the outer voice coil.

[0011] In one embodiment, the inner voice coil and the outer voice coil are coaxially arranged.

[0012] In one embodiment, each corner of the outer voice coil is respectively connected to the outer centering support.

[0013] In one embodiment, the side magnet structure includes a side washer and side magnets respectively connecting the side washer and the yoke. The side washer is connected to the frame, and the end of the side magnet is provided with a clearance groove. The outer centering support includes an inner mounting part, a deformation arm and an outer mounting part connected in sequence. The inner mounting part is connected to the outer voice coil, the outer mounting part is connected to the frame, and the end of the deformation arm away from the inner mounting part extends into the clearance groove.

[0014] In one embodiment, the clearance groove communicates with the outer wall surface of the edge magnet.

[0015] In one embodiment, the inner centering support includes an inner fixing part, a cantilever part, a rising part, and an outer fixing part connected in sequence. The inner fixing part is fixed to the boss and electrically connected to the conductive element, and the outer fixing part is fixed to the diaphragm assembly and electrically connected to the inner voice coil.

[0016] In one embodiment, the top surface of the central magnetic structure is provided with a clearance groove for avoiding the outer fixing part.

[0017] In one embodiment, the cantilever portion is connected to each of the opposite sides of the internal fixing portion.

[0018] In one embodiment, the inner centering support is a centrally symmetrical structure or a planar symmetrical structure.

[0019] In one embodiment, the yoke has a through hole, the boss is embedded in the through hole, and the conductive element is embedded in the boss.

[0020] The beneficial effects of this invention are as follows: The sound-generating unit has a novel structure. The inner and outer voice coils are connected to the external power supply through different centering supports, eliminating the space occupied by the centering support area connecting the inner and outer voice coils for the magnetic circuit components. This allows for a larger overall volume of the magnetic circuit components in the sound-generating unit, thereby increasing the B-value and ultimately improving its performance. Furthermore, the central region of the central magnetic structure has relatively low magnetic utilization. Setting a mounting through-hole in the central region of the central magnetic structure reduces the impact of the through-hole on the central magnetic structure, ensuring the sound-generating unit exhibits superior acoustic performance. Attached Figure Description

[0021] 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.

[0022] Figure 1 is an exploded view of the sound-generating unit of Embodiment 1;

[0023] Figure 2 is a schematic diagram of the structure of the sound-generating unit after the diaphragm assembly is hidden in Embodiment 1;

[0024] Figure 3 is a schematic diagram of a portion of the sound-generating unit in Embodiment 1.

[0025] Explanation of icon numbers:

[0026] 1. Pot stand;

[0027] 2. Magnetic circuit assembly; 21. Yoke; 211. Boss; 212. Conductive component; 22. Central magnetic structure; 221. Mounting through hole; 222. Clearance groove; 23. Inner magnetic structure; 24. Side magnetic structure; 241. Side magnet; 242. Clearance groove;

[0028] 31. Diaphragm assembly; 32. Inner voice coil; 33. Outer voice coil;

[0029] 4. Inner centering support; 41. Internal fixation part; 42. Cantilever part; 43. Rising part; 44. External fixation part;

[0030] 5. Lateral centering support. 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] Referring to Figures 1 to 3, Embodiment 1 of this utility model is as follows: A sound-generating unit includes a frame 1, a magnetic circuit assembly 2, a vibration assembly, an inner centering support 4, and an outer centering support 5. The magnetic circuit assembly 2 includes a yoke 21 and a central magnetic structure 22, an inner magnetic structure 23, and a side magnetic structure 24 arranged sequentially from the inside out. The central magnetic structure 22, the inner magnetic structure 23, and the side magnetic structure 24 are respectively connected to the yoke 21. The side magnetic structure 24 is connected to the frame 1. An inner magnetic gap is formed between the central magnetic structure 22 and the inner magnetic structure 23, and an outer magnetic gap is formed between the inner magnetic structure 23 and the side magnetic structure 24. A mounting through hole 221 is provided in the center of the central magnetic structure 22. A boss 211 is provided on the yoke 21, located within the mounting through hole 221. A conductive element 212 is provided on the boss 211. 2. It has a conductive portion exposed on the bottom surface of the yoke 21, which is used to conduct external power; the vibration assembly includes a diaphragm assembly 31 and an inner voice coil 32 and an outer voice coil 33 respectively connected to the diaphragm assembly 31. The inner voice coil 32 is set corresponding to the inner magnetic gap, which provides movement space for the inner voice coil 32. The outer voice coil 33 is set corresponding to the outer magnetic gap, which provides movement space for the outer voice coil 33. The inner centering support 4 is fixedly connected to the diaphragm assembly 31 and the boss 211 respectively. The inner centering support 4 conducts the inner voice coil 32 and the conductive member 212; the outer centering support 5 is fixedly connected to the frame 1 and the outer voice coil 33 respectively. The outer centering support 5 is electrically connected to the outer voice coil 33. The outer centering support 5 has a conductive portion for conducting external power.

[0039] In one or more embodiments, the inner voice coil 32 and the outer voice coil 33 are coaxially arranged.

[0040] In this embodiment, the outer voice coil 33 is generally rectangular, and each corner of the outer voice coil 33 is respectively connected to the outer centering support 5.

[0041] In detail, the central magnetic structure 22 includes a central washer and a central magnet connecting the central washer and the yoke 21 respectively; the inner magnetic structure 23 includes an inner washer and an inner magnet connecting the inner washer and the yoke 21 respectively; the side magnetic structure 24 includes a side washer and a side magnet 241 connecting the side washer and the yoke 21 respectively, and the side washer is connected to the basin stand 1.

[0042] To fully utilize the internal space of the sound-generating unit and allow for a larger overall size of the edge magnet structure 24, in this embodiment, the end of the edge magnet 241 is provided with a clearance groove 242. The outer centering support 5 includes an inner mounting part, a deformation arm, and an outer mounting part connected in sequence. The inner mounting part is connected to the outer voice coil 33, and the outer mounting part is connected to the frame 1. The conductive part is disposed on the outer mounting part, and the end of the deformation arm away from the inner mounting part extends into the clearance groove 242. As a preferred embodiment, the clearance groove 242 communicates with the outer wall surface of the edge magnet 241, which minimizes the impact of the clearance groove 242 on the effective magnetic field of the sound-generating unit.

[0043] The inner centering support plate 4 includes an inner fixing part 41, a cantilever part 42, a rising part 43 and an outer fixing part 44 connected in sequence. The inner fixing part 41 is fixed on the boss 211 and electrically connected to the conductive member 212. The outer fixing part 44 is fixed on the diaphragm assembly 31 and electrically connected to the inner voice coil 32.

[0044] To prevent the welding point between the inner voice coil 32 and the inner fixing part 41 from colliding with the central magnetic structure 22 when the sound-generating unit is working, optionally, the top surface of the central magnetic structure 22 is provided with a clearance groove 222 for avoiding the outer fixing part 44.

[0045] The cantilever portion 42 is connected to the opposite sides of the inner fixing portion 41. In order to make the vibration component more balanced, the inner centering support 4 is preferably a centrally symmetrical structure or a planar symmetrical structure.

[0046] In some embodiments, the yoke 21 has a through hole, the boss 211 is embedded in the through hole, and the conductive element 212 is embedded in the boss 211. The conductive element 212 is a metal structural component.

[0047] 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-generating unit, characterized in that: The system includes a basin stand and a magnetic circuit assembly. The magnetic circuit assembly includes a yoke and a central magnetic structure, an inner magnetic structure, and a side magnetic structure arranged sequentially from the inside out. The central magnetic structure, inner magnetic structure, and side magnetic structure are respectively connected to the yoke. The side magnetic structure is connected to the basin stand. An inner magnetic gap is formed between the central magnetic structure and the inner magnetic structure, and an outer magnetic gap is formed between the inner magnetic structure and the side magnetic structure. A mounting through hole is provided in the center of the central magnetic structure. A boss is provided on the yoke, located within the mounting through hole. A conductive element is provided on the boss, and the conductive element has an outer... A conductive portion exposed on the bottom surface of the yoke; a vibrating assembly, the vibrating assembly including a diaphragm assembly and an inner voice coil and an outer voice coil respectively connected to the diaphragm assembly, the inner voice coil being disposed corresponding to the inner magnetic gap, and the outer voice coil being disposed corresponding to the outer magnetic gap; an inner centering support, the inner centering support being fixedly connected to the diaphragm assembly and the boss respectively, the inner centering support being electrically connected to the inner voice coil and the conductive element; an outer centering support, the outer centering support being fixedly connected to the frame and the outer voice coil respectively, the outer centering support being electrically connected to the outer voice coil.

2. The sound-generating unit according to claim 1, characterized in that: The inner voice coil and the outer voice coil are coaxially arranged.

3. The sound-generating unit according to claim 1, characterized in that: The outer voice coil is connected to the outer centering support at each corner.

4. The sound-generating unit according to claim 1, characterized in that: The side magnet structure includes a side washer and side magnets that connect the side washer and the yoke respectively. The side washer is connected to the frame. The end of the side magnet is provided with a clearance groove. The outer centering support includes an inner mounting part, a deformation arm and an outer mounting part connected in sequence. The inner mounting part is connected to the outer voice coil. The outer mounting part is connected to the frame. The end of the deformation arm away from the inner mounting part extends into the clearance groove.

5. The sound-generating unit according to claim 4, characterized in that: The clearance groove is connected to the outer wall surface of the edge magnet.

6. The sound-generating unit according to claim 1, characterized in that: The inner centering support includes an inner fixing part, a cantilever part, a rising part and an outer fixing part connected in sequence. The inner fixing part is fixed on the boss and electrically connected to the conductive element. The outer fixing part is fixed on the diaphragm assembly and electrically connected to the inner voice coil.

7. The sound-generating unit according to claim 6, characterized in that: The top surface of the central magnetic structure is provided with a clearance groove for avoiding the external fixing part.

8. The sound-generating unit according to claim 6, characterized in that: The cantilever portion is connected to the opposite sides of the internal fixing portion.

9. The sound-generating unit according to claim 8, characterized in that: The inner centering support is a centrally symmetrical structure or a planar symmetrical structure.

10. The sound-generating unit according to claim 1, characterized in that: The yoke has a through hole, the boss is embedded in the through hole, and the conductive element is embedded in the boss.

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