Sound production unit

Abstract

The utility model discloses a sounding unit, including basin stand, magnetic circuit subassembly, bass vibration subassembly and treble system, magnetic circuit subassembly includes yoke, and the central magnetic structure and side magnetic structure that are respectively provided on the yoke, side magnetic structure is connected basin stand, and the side magnetic structure forms bass magnetic gap with the central magnetic structure, the central magnetic structure comprises annular lower magnetic steel, an annular washer plate and a washer convex hull which are sequentially stacked and connected from bottom to top, and a hollow area of the washer convex hull is communicated with a hollow area of the annular lower magnetic steel; the high-pitch system comprises a high-pitch vibrating diaphragm assembly, high-pitch voice coils, an upper high-pitch magnetic structure and a lower high-pitch magnetic structure, the high-pitch vibrating diaphragm assembly is connected with the central magnetic structure, the top side and the bottom side of the high-pitch vibrating diaphragm assembly are respectively provided with the high-pitch voice coils, the upper high-pitch magnetic structure is arranged on the bottom surface of the top plate of the washer convex hull, and the lower high-pitch magnetic structure is arranged on the bottom surface of the top plate of the washer convex hull. And the yoke is corresponding to the lower high-pitch magnetic structure in the area of the annular lower magnetic steel. The sounding unit is novel in structure, thin in thickness and good in high-frequency performance.

Description

Technical Field

[0001] The utility model relates to the technical field of electro-acoustic transducers, and particularly to a sounding unit. Background Art

[0002] As a common electro-acoustic transducer for converting electrical energy into sound energy, the sounding unit plays an indispensable role in the sound reproduction system.

[0003] With the development of thinning of consumer electronic products such as mobile phones and tablet computers, the sounding unit also needs to become thinner and lighter. In the prior art, there is a design of a coaxial high-frequency system and low-frequency sound absorption, but this coaxial sounding unit generally has a relatively large thickness and is difficult to meet the requirements of thinning of consumer electronic products; and if the volume of the magnetic structure of the high-frequency system is directly reduced, the acoustic performance of the sounding unit will decline. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a thin and light high-performance sounding unit.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is: a sounding unit, comprising:

[0006] A chassis;

[0007] A magnetic circuit assembly, the magnetic circuit assembly includes a yoke and a central magnetic structure and an edge magnetic structure respectively arranged on the yoke, the edge magnetic structure is connected to the chassis, a low-frequency magnetic gap is formed between the edge magnetic structure and the central magnetic structure, the central magnetic structure includes a ring-shaped lower magnetic steel, a ring-shaped washer plate and a washer boss stacked and connected in sequence from bottom to top, and the hollow area of the washer boss communicates with the hollow area of the ring-shaped lower magnetic steel;

[0008] A low-frequency vibration assembly, the low-frequency vibration assembly includes a connected low-frequency diaphragm assembly and a low-frequency voice coil, the low-frequency diaphragm assembly is connected to the central magnetic structure and the chassis, and the bottom of the low-frequency voice coil extends into the low-frequency magnetic gap;

[0009] A high-frequency system, the high-frequency system includes a high-frequency diaphragm assembly, a high-frequency voice coil, an upper high-frequency magnetic structure and a lower high-frequency magnetic structure, the high-frequency diaphragm assembly is connected to the central magnetic structure, the high-frequency voice coils are respectively arranged on the top side and the bottom side of the high-frequency diaphragm assembly, an upper high-frequency magnetic structure is arranged on the bottom surface of the top plate of the washer boss, a lower high-frequency magnetic structure is arranged in the area of the yoke corresponding to the ring-shaped lower magnetic steel, the upper high-frequency magnetic structure has a high-frequency magnetic gap, the high-frequency voice coil located on the top side of the high-frequency diaphragm assembly is arranged corresponding to the high-frequency magnetic gap, and the high-frequency voice coil located on the bottom side of the high-frequency diaphragm assembly is arranged around the lower high-frequency magnetic structure.

[0010] In one embodiment, vent holes communicating with the hollow region of the annular lower magnetic steel are provided on the bottom surface of the yoke.

[0011] In one embodiment, a mesh cloth covering the vent holes is provided on the yoke.

[0012] In one embodiment, a receiving groove for receiving at least a partial region of the mesh cloth is further provided on the bottom surface of the yoke.

[0013] In one embodiment, the depth of the receiving groove is greater than or equal to the thickness of the mesh cloth.

[0014] In one embodiment, the mesh cloth is a woven mesh or a metal mesh.

[0015] In one embodiment, the bottom of the washer boss has a skirt extending outward, and the skirt is parallel and connected to the annular washer plate.

[0016] In one embodiment, the outer edge of the tweeter diaphragm assembly is clamped between the skirt and the annular washer plate, and the outer edge of the tweeter diaphragm assembly is adhesively connected to the skirt and the annular washer plate respectively.

[0017] In one embodiment, the woofer diaphragm assembly includes a woofer diaphragm, and the woofer diaphragm includes an inner fixing portion, an inner folding ring portion, a connecting portion, an outer folding ring portion, and an outer fixing portion that are connected in sequence from inside to outside, and the inner fixing portion is fixedly connected to the top surface of the top plate of the washer boss.

[0018] In one embodiment, the upper tweeter magnetic structure includes a middle magnetic structure and an outer magnetic structure, and a tweeter magnetic gap is formed between the middle magnetic structure and the outer magnetic structure.

[0019] The beneficial effects of the present utility model are as follows: The structure of this sounding unit is novel. The sounding directions of the tweeter system and the woofer system are opposite. Compared with the existing coaxial sounding unit design, this sounding unit can maintain the height of the existing woofer system without additional height increase, ensuring that the sounding unit can remain thin and light, so that the sounding unit can meet the development trend of thin and light consumer electronic products. Moreover, the tweeter diaphragm assembly is driven by two groups of tweeter magnetic structures, with a large driving force, effectively improving the high-frequency performance of the sounding unit and enabling the sounding unit to have better acoustic performance. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 Cross-section of the sound generating unit according to the first embodiment of the present utility model Figure 1 ;

[0022] Figure 2 Cross-section of the sound generating unit according to the first embodiment of the present utility model Figure 2 .

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Frame;

[0025] 2. Magnetic circuit assembly; 21. Yoke; 211. Vent hole; 212. Accommodating groove; 23. Central magnetic structure; 231. Annular lower magnetic steel; 232. Annular washer plate; 233. Washer convex hull; 2331. Top plate; 2332. Skirt; 24. Edge magnetic structure; [[ID=2...]]

[0026] 3. Bass vibration assembly; 31. Bass diaphragm assembly; 32. Bass voice coil;

[0027] 4. Tweeter diaphragm assembly;

[0028] 5. Tweeter voice coil;

[0029] 6. Upper tweeter magnetic structure; 61. Middle magnetic structure; 62. Outer magnetic structure;

[0030] 7. Lower tweeter magnetic structure;

[0031] 8. Mesh cloth. Detailed implementation manners

[0032] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. <00...]]

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if the description in the embodiments of the present utility model involves "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and cannot be construed as indicating or implying its relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0036] In addition, the meaning of "and / or" that appears throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions 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 required by the present utility model.

[0037] In this application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Embodiment 1

[0039] Please refer to Figure 1 and Figure 2 , Embodiment 1 of the present utility model is: a sound generating unit, including a chassis 1, a magnetic circuit assembly 2, a bass vibration assembly 3 and a treble system. The magnetic circuit assembly 2 includes a yoke 21 and a central magnetic structure 23 and an edge magnetic structure 24 respectively arranged on the yoke 21. The edge magnetic structure 24 is connected to the chassis 1. A bass magnetic gap is formed between the edge magnetic structure 24 and the central magnetic structure 23. The central magnetic structure 23 includes a ring-shaped lower magnetic steel 231, a ring-shaped spacer plate 232 and a spacer boss 233 which are stacked and connected in sequence from bottom to top. The hollow area of the spacer boss 233 communicates with the hollow area of the ring-shaped lower magnetic steel 231;

[0040] The bass vibration assembly 3 includes a connected bass diaphragm assembly 31 and a bass voice coil 32. The bass diaphragm assembly 31 is connected to the central magnetic structure 23 and the chassis 1. The bottom of the bass voice coil 32 extends into the bass magnetic gap;

[0041] The tweeter system includes a tweeter diaphragm assembly 4, a tweeter voice coil 5, an upper tweeter magnetic structure 6, and a lower tweeter magnetic structure 7. The tweeter diaphragm assembly 4 is connected to the central magnetic structure 23. The tweeter voice coils 5 are respectively provided on the top side and the bottom side of the tweeter diaphragm assembly 4. The upper tweeter magnetic structure 6 is provided on the bottom surface of the top plate 2331 of the washer boss 233. The yoke 21 is provided with the lower tweeter magnetic structure 7 corresponding to the area of the annular lower magnet 231. The upper tweeter magnetic structure 6 has a tweeter magnetic gap. The tweeter voice coil 5 located on the top side of the tweeter diaphragm assembly 4 is arranged corresponding to the tweeter magnetic gap, and the tweeter voice coil 5 located on the bottom side of the tweeter diaphragm assembly 4 is arranged around the lower tweeter magnetic structure 7.

[0042] To balance the air pressure inside and outside the tweeter system, the bottom surface of the yoke 21 is provided with a vent hole 211 communicating with the hollow area of the annular lower magnet 231. Preferably, a mesh cloth 8 covering the vent hole 211 is provided on the yoke 21. The mesh cloth 8 is a woven mesh or a metal mesh, and the mesh cloth 8 can be used to debug the performance of the tweeter system and prevent foreign objects from damaging the tweeter system.

[0043] To facilitate the positioning and installation of the mesh cloth 8, the bottom surface of the yoke 21 is further provided with a receiving groove 212 for receiving at least a partial area of the mesh cloth 8. The receiving groove 212 communicates with the vent hole 211. To better protect the mesh cloth 8, preferably, the depth of the receiving groove 212 is greater than or equal to the thickness of the mesh cloth 8. In actual products, it is also acceptable that the depth of the receiving groove 212 is slightly less than the thickness of the mesh cloth 8.

[0044] The bottom of the washer boss 233 has a skirt 2332 extending outward. The skirt 2332 is parallel to and connected to the annular washer plate 232. The existence of the skirt 2332 can make the washer boss 233 and the annular washer plate 232 form a more stable connection. At the same time, the existence of the skirt 2332 is equivalent to thickening the annular washer plate 232, thereby improving the magnetic conduction effect, and further enabling the sounding unit to have better acoustic performance.

[0045] Optionally, the outer edge of the tweeter diaphragm assembly 4 is clamped between the skirt 2332 and the annular washer plate 232. The outer edge of the tweeter diaphragm assembly 4 is adhesively connected to the skirt 2332 and the annular washer plate 232 respectively. At this time, it can be considered that the skirt 2332 indirectly connects the annular washer plate 232 through the tweeter diaphragm assembly 4.

[0046] The skirt 2332 is adhesively connected or welded to the annular washer plate 232. Specifically, the area where the outer edge of the tweeter diaphragm assembly 4 is not clamped between the skirt 2332 and the annular washer plate 232 can be directly connected by an adhesive method or a welding method, which can effectively improve the structural stability of the sounding unit.

[0047] The bass diaphragm assembly 31 includes a bass diaphragm, which includes an inner fixing portion, an inner folding ring portion, a connecting portion, an outer folding ring portion, and an outer fixing portion that are connected in sequence from the inside out. The inner fixing portion is fixedly connected to the top surface of the top plate 2331 of the washer boss 233. Optionally, the bass diaphragm assembly 31 further includes an annular dome disposed on the connecting portion, and the connection between the bass voice coil 32 and the bass diaphragm assembly 31 corresponds to the annular dome.

[0048] The upper high - frequency magnetic structure 6 includes a middle magnetic structure 61 and an outer magnetic structure 62. A high - frequency magnetic gap is formed between the middle magnetic structure 61 and the outer magnetic structure 62. The middle magnetic structure 61 includes a middle magnet and a middle washer that are connected. The outer magnetic structure 62 includes an outer magnet and an outer washer that are connected. From a certain perspective, the lower high - frequency magnetic structure 7 only has the middle magnetic structure 61 and does not have the outer magnetic structure 62. That is to say, the high - frequency voice coil 5 located at the bottom side of the high - frequency diaphragm assembly 4 surrounds the middle magnetic structure 61 in the lower high - frequency magnetic structure 7.

[0049] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. Sound generating unit, characterized in that: Comprising a chassis; a magnetic circuit assembly, the magnetic circuit assembly including a yoke and a central magnetic structure and side magnetic structures respectively disposed on the yoke, the side magnetic structures connecting the chassis, a bass magnetic gap being formed between the side magnetic structures and the central magnetic structure, the central magnetic structure including an annular lower magnet, an annular washer plate and a washer boss stacked and connected in sequence from bottom to top, a hollow region of the washer boss communicating with a hollow region of the annular lower magnet; a bass vibration assembly, the bass vibration assembly including a connected bass diaphragm assembly and a bass voice coil, the bass diaphragm assembly connecting the central magnetic structure and the chassis, a bottom of the bass voice coil extending into the bass magnetic gap; a treble system, the treble system including a treble diaphragm assembly, a treble voice coil, an upper treble magnetic structure and a lower treble magnetic structure, the treble diaphragm assembly connecting the central magnetic structure, the treble voice coil being respectively disposed on a top side and a bottom side of the treble diaphragm assembly, an upper treble magnetic structure being disposed on a bottom surface of a top plate of the washer boss, the lower treble magnetic structure being disposed in a region of the yoke corresponding to the annular lower magnet, the upper treble magnetic structure having a treble magnetic gap, the treble voice coil located on the top side of the treble diaphragm assembly being disposed corresponding to the treble magnetic gap, and the treble voice coil located on the bottom side of the treble diaphragm assembly being disposed around the lower treble magnetic structure.

2. The sound generating unit according to claim 1, wherein: The bottom surface of the yoke is provided with a vent hole communicating with the hollow region of the annular lower magnet.

3. The sound generating unit according to claim 2, characterized in that: A mesh cloth covering the vent hole is provided on the yoke.

4. The sound generating unit according to claim 3, wherein: The bottom surface of the yoke is further provided with a receiving groove for receiving at least a partial region of the mesh cloth.

5. The sound generating unit according to claim 4, characterized in that: The depth of the receiving groove is greater than or equal to the thickness of the mesh cloth.

6. The sound generating unit according to claim 3, wherein: The mesh cloth is a woven mesh or a metal mesh.

7. The sound generating unit according to claim 1, wherein: The bottom of the washer boss has a skirt extending outwardly, the skirt being parallel and connected to the annular washer plate.

8. The sound generating unit according to claim 7, wherein: An outer edge of the treble diaphragm assembly is clamped between the skirt and the annular washer plate, and the outer edge of the treble diaphragm assembly is adhesively connected to the skirt and the annular washer plate respectively.

9. The sound generating unit according to claim 1, wherein: The bass diaphragm assembly includes a bass diaphragm, the bass diaphragm including an inner fixing portion, an inner folding ring portion, a connecting portion, an outer folding ring portion and an outer fixing portion connected in sequence from inside to outside, the inner fixing portion being fixedly connected to a top surface of a top plate of the washer boss.

10. The sound generating unit according to claim 1, wherein: The upper treble magnetic structure includes a middle magnetic structure and an outer magnetic structure, and the treble magnetic gap is formed between the middle magnetic structure and the outer magnetic structure.

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