sound production unit

Abstract

The utility model discloses a sound unit, including two magnetic cover and two edge magnetic structure, two the magnetic cover is opposite to set up, and at least one the middle part of magnetic cover has the inner flanging, and the inner flanging is located between two the magnetic cover, the edge magnetic structure includes by lower to upper in proper order the lower edge magnetic steel, the edge huasi and upper edge magnetic steel, the lower edge magnetic steel and upper edge magnetic steel are connected different the magnetic cover respectively, the inner flanging is located between two the edge magnetic structure, and the distal end of inner flanging with the edge huasi corresponds. This sound unit has the superiority of high, and has reduced center huasi and at least one center magnetic steel, has realized the reduction of sound unit parts, has facilitated the assembly work of sound unit, is favorable to the promotion of the assembly efficiency of sound unit, reduces the assembly cost of sound unit, and alleviates the total weight of sound unit.

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] Figure 1 A cross-sectional view of a sound-generating unit is shown. The sound-generating unit has two magnetic covers, with a central magnetic structure and a side magnetic structure sandwiched between the two magnetic covers. Both the central magnetic structure and the side magnetic structure have reverse magnets, so that the voice coil is always within the magnetic gap during vibration, which increases the BL value of the sound-generating unit. Compared with ordinary sound-generating units, its performance is improved to a certain extent. However, the sound-generating unit has many components, which makes the assembly process complicated and time-consuming. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a high-performance sound unit with fewer components.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0005] Two magnetic shields are arranged vertically opposite each other, and at least one of the magnetic shields has an inward flange in the middle, with the inward flange located between the two magnetic shields;

[0006] Two edge magnetic structures are provided, each comprising a lower edge magnet, an edge washer, and an upper edge magnet connected sequentially from bottom to top. The lower and upper edge magnets are respectively connected to different magnetic covers. The inner flange is located between the two edge magnetic structures, and the far end of the inner flange corresponds to the edge washer.

[0007] In one embodiment, the magnetic cover and the inner flange connected thereto are integrally formed into a single structure.

[0008] In one embodiment, the inner flange is generally in the shape of a ring frame.

[0009] In one embodiment, the distal end of the inwardly flanged edge is an open end.

[0010] In one embodiment, a magnetic plate is connected to the distal end of the inner flange.

[0011] In one embodiment, the inner flange and the magnetic conductive plate and magnetic cover connected thereto are integrally formed into a single structure.

[0012] In one embodiment, only one of the magnetic shields has the inner flange and also includes a central magnet that contacts the distal end of the inner flange and the other magnetic shield.

[0013] In one embodiment, both magnetic covers have the inner flange.

[0014] In one embodiment, the distal ends of the two inner flanges are in contact with each other.

[0015] In one embodiment, the distal ends of the two inner flanges are fixedly connected.

[0016] The beneficial effects of this utility model are as follows: The sound-generating unit has a novel structure. During vibration, both the upper and lower parts of the voice coil assembly move within the magnetic gap and will not exceed the magnetic gap. This is beneficial to improving the sensitivity of the sound-generating unit's BL value, symmetry, and flatness, thereby improving the acoustic performance of the sound-generating unit. Moreover, the connection between the voice coil assembly and the diaphragm assembly is staggered, so the diaphragm assembly does not occupy the space above the voice coil assembly. This allows the voice coil to vibrate with a larger amplitude while maintaining a thin and light design, which is beneficial to improving the loudness of the sound-generating unit. In addition, this sound-generating unit reduces the center washer and at least one center magnet, thereby reducing the number of sound-generating unit components, facilitating the assembly of the sound-generating unit, improving the assembly efficiency, reducing the assembly cost, and reducing the overall weight of the sound-generating unit. Attached Figure Description

[0017] 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.

[0018] Figure 1 A cross-sectional view of a sound-generating unit in the prior art;

[0019] Figure 2 This is an exploded view of a sound-generating unit according to one embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of a sound-generating unit according to one embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the magnetic circuit of a sound-generating unit according to one embodiment of the present utility model;

[0022] Figure 5 This is a cross-sectional view of a sound-generating unit with another structure in Embodiment 1 of this utility model;

[0023] Figure 6 This is a cross-sectional view of a sound-generating unit according to Embodiment 2 of this utility model;

[0024] Figure 7 This is a cross-sectional view of a sound-generating unit with another structure in Embodiment 2 of this utility model.

[0025] Explanation of icon numbers:

[0026] 1. Pot stand;

[0027] 2. Magnetic circuit assembly; 21. Magnetic cover; 211. Inner flange; 212. Magnetic guide plate; 22. Side magnetic structure; 221. Lower magnet; 222. Side washer; 223. Upper magnet; 23. Center magnet;

[0028] 3. Diaphragm assembly; 31. Inner fixing part; 32. Inner folding ring part; 33. Connecting part; 34. Outer folding ring part; 35. Outer fixing part;

[0029] 4. Frame; 41. Internal mounting part; 42. Elevation part; 43. External mounting part;

[0030] 5. Voice coil. 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 2 to 5 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 frame 4, and a voice coil 5. The magnetic circuit assembly 2 includes two magnetic covers 21 and two side magnetic structures 22. The two magnetic covers 21 are arranged vertically opposite each other, and at least one of the magnetic covers 21 has an inner flange 211 in the middle, which is located between the two magnetic covers 21. The side magnetic structure 22 includes a lower side magnet 221, a side washer 222, and an upper side magnet 223 connected sequentially from bottom to top. The lower side magnet 221 and the upper side magnet 223 are respectively connected to different magnetic covers 21. The inner flange 211 is located between the two side magnetic structures 22 to form a magnetic gap for the voice coil 5 to move. The far end of the inner flange 211 corresponds to the side washer 222. The frame 4 connects the diaphragm assembly 3 and the voice coil 5.

[0039] The proximal end of the inner flange 211 is the connection end that connects to the magnetic cover 21, and the distal end of the inner flange 211 is the other end of the inner flange 211 that is away from its proximal end.

[0040] The lower part of the frame 1 is connected to the magnet 21 located below it. The diaphragm assembly 3 includes an inner fixing part 31, an inner folding ring part 32, a connecting part 33, an outer folding ring part 34 and an outer fixing part 35 connected in sequence from the inside to the outside. The outer fixing part 35 is connected to the upper part of the frame 1 and the inner fixing part 31 is connected to the magnet 21 located above it. The frame 4 includes an inner mounting part 41, a support part 42 and an outer mounting part 43 connected in sequence. The outer mounting part 43 is connected to the connecting part 33 and the inner mounting part 41 is connected to the voice coil 5.

[0041] In this embodiment, a portion of the inner mounting portion 41 is sandwiched between the side magnetic structure 22 and the magnetic cover 21 located above, in order to improve the structural stability of the sound-generating unit.

[0042] In one or more embodiments, the inner flange 211 is generally in the shape of a ring frame. To facilitate the processing and manufacturing of the magnetic cover 21, the magnetic cover 21 and the inner flange 211 connected thereto are integrally formed as a single structure, such as integral stamping.

[0043] In some embodiments, the distal end of the inner flange 211 is an open end. In other embodiments, the distal end of the inner flange 211 is connected to a magnetic guide plate 212. When the distal end of the inner flange 211 is connected to the magnetic guide plate 212, preferably the inner flange 211, the magnetic guide plate 212 connected thereto, and the magnetic cover 21 are integrally formed into a single structure. The magnetic guide plate 212 can guide more magnetic lines of force to the magnetic gap, which is beneficial to improving the magnetic utilization rate of the magnetic circuit assembly 2, thereby improving the performance of the sound generating unit.

[0044] In this embodiment, only one of the magnetic covers 21 in the sound-generating unit has the inner flange 211. The magnetic circuit assembly 2 in the sound-generating unit also includes a central magnet 23. The central magnet 23 contacts the distal end of the inner flange 211 and another magnetic cover 21 respectively. Preferably, the central magnet 23 is bonded and fixed to the distal end of the inner flange 211 and another magnetic cover 21 respectively.

[0045] It should be noted that when the magnetic cover 21 located below has the inner flange 211, the central magnet 23 respectively contacts the far end of the inner flange 211 (i.e., Figure 2 The top end of the inner flange 211 (as shown) and the magnetic shield 21 located above; when the magnetic shield 21 located above has the inner flange 211, the central magnet 23 contacts the far end of the inner flange 211 (i.e., the top end of the inner flange 211). Figure 4 The bottom end of the inner flange 211 shown) and the magnetic cover 21 located below.

[0046] Example 2

[0047] Please refer to Figure 6 and Figure 7 The second embodiment of this utility model is a parallel technical solution to the first embodiment, and the difference between the two magnetic covers 21 is that both magnetic covers 21 have an inner flange 211.

[0048] The distal ends of the two inner flanges 211 are in contact with each other, preferably, the distal end faces of the two inner flanges 211 are in contact with each other.

[0049] To improve the structural stability of the sound-generating unit, it is preferable to fix the distal ends of the two inner flanges 211 together. Specific connection methods include, but are not limited to, bonding and welding.

[0050] Neither of the two inner flanges 211 has a magnetic plate 212, or only one of the inner flanges 211 has a magnetic plate 212, or both of the inner flanges 211 have a magnetic plate 212. In this case, the two magnetic plates 212 are in contact with each other, preferably the two magnetic plates 212 are welded together, thereby greatly improving the structural stability of the sound-generating unit.

[0051] 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 Two magnetic shields are arranged vertically opposite each other, and at least one of the magnetic shields has an inward flange in the middle, with the inward flange located between the two magnetic shields; Two edge magnetic structures are provided, each comprising a lower edge magnet, an edge washer, and an upper edge magnet connected sequentially from bottom to top. The lower and upper edge magnets are respectively connected to different magnetic covers. The inner flange is located between the two edge magnetic structures, and the far end of the inner flange corresponds to the edge washer.

2. The sound-generating unit according to claim 1, characterized in that: The magnetic cover and the inner flange connected to it are integrally formed into a single structure.

3. The sound-generating unit according to claim 1, characterized in that: The inner flange is shaped like a ring frame.

4. The sound-generating unit according to claim 1, characterized in that: The far end of the inward-turned edge is the open end.

5. The sound-generating unit according to claim 1, characterized in that: The far end of the inwardly turned edge is connected to a magnetic plate.

6. The sound-generating unit according to claim 5, characterized in that: The inner flange and the magnetic conductive plate and magnetic cover connected thereto are integrally formed into a single structure.

7. The sound-generating unit according to claim 1, characterized in that: Only one of the magnetic shields has the inner flange and also includes a central magnet that contacts the distal end of the inner flange and the other magnetic shield.

8. The sound-generating unit according to claim 1, characterized in that: Both of the magnetic shields have the inner flange.

9. The sound-generating unit according to claim 8, characterized in that: The distal ends of the two inner flanges are in contact with each other.

10. The sound-generating unit according to claim 9, characterized in that: The distal ends of the two inner flanges are fixedly connected.

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