Sound production unit

Abstract

The utility model discloses a sounding unit, including basin stand, magnetic circuit subassembly, treble vibration subassembly and bass vibration subassembly, the magnetic circuit subassembly includes treble magnetic structure, yoke, and 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 and central magnetic structure form bass magnetic gap between. 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, a hollow area of the washer convex hull is communicated with a hollow area of the annular lower magnetic steel, the high-pitch magnetic structure is arranged on the bottom surface of a top plate of the washer convex hull, and the high-pitch magnetic structure is provided with a high-pitch magnetic gap; and the bottom surface of the yoke is provided with a window communicated with the hollow area of the annular lower magnetic steel. The sound production unit is novel in structure, the sound production directions of the high pitch system and the low pitch system are opposite, and compared with the design of an existing coaxial sound production unit, the sound production unit can maintain the height of the existing low pitch system without additionally increasing the height, so that the sound production unit can be kept light and thin.

Description

Technical Field

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

[0002] As a common electroacoustic transducer for converting electrical energy into sound energy, the sounding unit plays an indispensable role in the sound playback 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 such coaxial sounding units generally have a relatively large thickness and are difficult to meet the requirements of thinning of consumer electronic products. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a novel and thinner 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 high-frequency magnetic structure, 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. The hollow area of the washer boss communicates with the hollow area of the ring-shaped lower magnetic steel. The high-frequency magnetic structure is arranged on the bottom surface of the top plate of the washer boss. The high-frequency magnetic structure has a high-frequency magnetic gap. The bottom surface of the yoke has a window opening communicating with the hollow area of the ring-shaped lower magnetic steel;

[0008] A high-frequency vibration assembly, the high-frequency vibration assembly includes a connected high-frequency diaphragm assembly and a high-frequency voice coil. The high-frequency diaphragm assembly is connected to the central magnetic structure. The top of the high-frequency voice coil extends into the high-frequency magnetic gap;

[0009] 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. The bottom of the low-frequency voice coil extends into the low-frequency magnetic gap.

[0010] In one embodiment, it further includes a mesh cloth arranged on the yoke, and the mesh cloth covers the window opening.

[0011] In one embodiment, a receiving annular groove is further provided on the bottom surface of the yoke. The receiving annular groove is arranged around the opening window and communicates with the opening window, and at least part of the area of the mesh cloth is located in the receiving annular groove.

[0012] In one embodiment, the depth of the receiving annular groove is greater than or equal to the thickness of the mesh cloth.

[0013] In one embodiment, the mesh cloth is a woven mesh or a metal mesh.

[0014] In one embodiment, the bottom of the washer boss has a skirt extending outward, and the skirt is parallel to and connected to the annular washer plate.

[0015] 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.

[0016] In one embodiment, the skirt is adhesively connected or welded to the annular washer plate.

[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 which are connected in sequence from inside to outside. The inner fixing portion is fixedly connected to the top surface of the top plate of the washer boss.

[0018] In one embodiment, the 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, and the sound output 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 be kept thin and light, so that the sounding unit can meet the development trend of thin and light consumer electronic products. BRIEF 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, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0021] Figure 1 Cross-section of the sounding unit of Embodiment 1 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. Basin frame

[0025] 2. Magnetic circuit assembly; 21. Yoke; 211. Window opening; 212. Accommodating ring groove; 22. High-frequency magnetic structure; 221. Middle magnetic structure; 222. Outer magnetic structure; 23. Central magnetic structure; 231. Annular lower magnet; 232. Annular spacer plate; 233. Spacer boss; 2331. Top plate; 2332. Skirt; 24. Edge magnetic structure

[0026] 3. High-frequency vibration assembly; 31. High-frequency diaphragm assembly; 32. High-frequency voice coil

[0027] 4. Low-frequency vibration assembly; 41. Low-frequency diaphragm assembly; 42. Low-frequency voice coil

[0028] 5. Mesh cloth Detailed implementation manners

[0029] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings

[0030] 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0031] 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 the components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly

[0032] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating 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

[0033] In addition, the meaning of "and / or" as used 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 respective embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0034] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall 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 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.

[0035] Embodiment 1

[0036] Please refer to Figure 1 and Figure 2 , Embodiment 1 of this utility model is: a sound generating unit, including a chassis 1, a magnetic circuit assembly 2, a high - frequency vibration assembly 3, and a low - frequency vibration assembly 4. The magnetic circuit assembly 2 includes a high - frequency magnetic structure 22, a yoke 21, a central magnetic structure 23 and an edge magnetic structure 24 respectively provided on the yoke 21. The edge magnetic structure 24 is connected to the chassis 1. A low - frequency 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 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. The high - frequency magnetic structure 22 is provided on the bottom surface of the top plate 2331 of the spacer boss 233. The high - frequency magnetic structure 22 has a high - frequency magnetic gap. The bottom surface of the yoke 21 has a window 211 communicating with the hollow area of the ring - shaped lower magnetic steel 231;

[0037] The high - frequency vibration assembly 3 includes a connected high - frequency diaphragm assembly 31 and a high - frequency voice coil 32. The high - frequency diaphragm assembly 31 is connected to the central magnetic structure 23. The top of the high - frequency voice coil 32 extends into the high - frequency magnetic gap. The low - frequency vibration assembly 4 includes a connected low - frequency diaphragm assembly 41 and a low - frequency voice coil 42. The low - frequency diaphragm assembly 41 is connected to the central magnetic structure 23 and the chassis 1. The bottom of the low - frequency voice coil 42 extends into the low - frequency magnetic gap.

[0038] The sound generating unit further includes a mesh cloth 5 provided on the yoke 21. The mesh cloth 5 covers the opening 211. The mesh cloth 5 is a woven mesh or a metal mesh, and the mesh cloth 5 can be used to debug the performance of the high - pitch system and prevent foreign objects from damaging the high - pitch system.

[0039] To facilitate the positioning and installation of the mesh cloth 5, a receiving ring groove 212 is further provided on the bottom surface of the yoke 21. The receiving ring groove 212 is arranged around the opening 211 and communicates with the opening 211. At least a part of the mesh cloth 5 is located in the receiving ring groove 212. To better protect the mesh cloth 5, preferably, the depth of the receiving ring groove 212 is greater than or equal to the thickness of the mesh cloth 5. In actual products, it is also acceptable that the depth of the receiving ring groove 212 is slightly less than the thickness of the mesh cloth 5.

[0040] The bottom of the washer boss 233 has a skirt 2332 extending outward. The skirt 2332 is parallel 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 sound generating unit to have better acoustic performance.

[0041] Optionally, the outer edge of the high - pitch diaphragm assembly 31 is clamped between the skirt 2332 and the annular washer plate 232. The outer edge of the high - pitch diaphragm assembly 31 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 high - pitch diaphragm assembly 31.

[0042] The skirt 2332 is adhesively connected or welded to the annular washer plate 232. Specifically, the area where the outer edge of the high - pitch diaphragm assembly 31 is not clamped between the skirt 2332 and the annular washer plate 232 can be directly connected by adhesive bonding or welding, which can effectively improve the structural stability of the sound generating unit.

[0043] The bass diaphragm assembly 41 includes a bass diaphragm. The bass diaphragm includes an inner fixing part, an inner folding ring part, a connecting part, an outer folding ring part, and an outer fixing part that are connected in sequence from the inside to the outside. The inner fixing part is fixedly connected to the top surface of the top plate 2331 of the washer boss 233. Optionally, the bass diaphragm assembly 41 further includes an annular dome provided on the connecting part. The connection part of the bass voice coil 42 and the bass diaphragm assembly 41 is arranged corresponding to the annular dome.

[0044] The high-frequency magnetic structure 22 includes a middle magnetic structure 221 and an outer magnetic structure 222, and a high-frequency magnetic gap is formed between the middle magnetic structure 221 and the outer magnetic structure 222. The middle magnetic structure 221 includes a middle magnet and a middle washer, and the middle magnet connects the top plate 2331 of the washer boss 233 to the middle washer. The outer magnetic structure 222 includes an outer magnet and an outer washer, and the outer magnet connects the top plate 2331 of the washer boss 233 to the outer washer.

[0045] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. 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: including a chassis; a magnetic circuit assembly, the magnetic circuit assembly including a tweeter magnetic structure, a yoke, a central magnetic structure and a side magnetic structure respectively disposed on the yoke, the side magnetic structure connecting the chassis, a bass magnetic gap being formed between the side magnetic structure and the central magnetic structure, the central magnetic structure including an annular lower magnet, an annular spacer plate and a spacer boss sequentially stacked and connected from bottom to top, a hollow region of the spacer boss communicating with a hollow region of the annular lower magnet, the tweeter magnetic structure being disposed on a bottom surface of a top plate of the spacer boss, the tweeter magnetic structure having a tweeter magnetic gap, and a window being formed on a bottom surface of the yoke and communicating with the hollow region of the annular lower magnet; a tweeter vibration assembly, the tweeter vibration assembly including a connected tweeter diaphragm assembly and a tweeter voice coil, the tweeter diaphragm assembly connecting the central magnetic structure, and a top of the tweeter voice coil extending into the tweeter magnetic gap; 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, and a bottom of the bass voice coil extending into the bass magnetic gap.

2. The sound generating unit according to claim 1, wherein: It further includes a mesh cloth disposed on the yoke, the mesh cloth covering the window.

3. The sound generating unit according to claim 2, wherein: A receiving annular groove is further provided on the bottom surface of the yoke, the receiving annular groove is disposed around the window and communicates with the window, and at least a partial region of the mesh cloth is located in the receiving annular groove.

4. The sound generating unit according to claim 3, wherein: A depth of the receiving annular groove is greater than or equal to a thickness of the mesh cloth.

5. The sound generating unit according to claim 2, wherein: The mesh cloth is a woven mesh or a metal mesh.

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

7. The sound generating unit according to claim 6, characterized in that: An outer edge of the tweeter diaphragm assembly is clamped between the skirt and the annular spacer plate, and the outer edge of the tweeter diaphragm assembly is adhesively connected to the skirt and the annular spacer plate respectively.

8. The sound generating unit according to claim 6, wherein: The skirt is adhesively connected or welded to the annular spacer plate.

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 sequentially connected from inside to outside, and the inner fixing portion being fixedly connected to a top surface of a top plate of the spacer boss.

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

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