sound production unit

Abstract

The utility model discloses a sound unit, including basin frame, diaphragm subassembly and front cover, and the basin frame includes ring frame part, and diaphragm subassembly includes the sound film with outer fixed part, and the outer fixed part includes the first department and second department of being linked, and the first department is ring frame shape, and the second department sets up along the outer edge of the first department, and the first department is bonded with the top surface of ring frame part, and the second department is bonded with the outer circumferential wall surface of ring frame part, and the front cover has the surrounding wall of setting on the second department, and the second department has the inside convex ring of projecting to the inside, and ring frame part extrudes inside convex ring to make the second department and surrounding wall contact surface form the sealed reinforcing area of ring frame shape, and / or, the second department has the outside convex ring of projecting to the outside, and surrounding wall extrudes outside convex ring to make the second department and ring frame part contact surface form the sealed reinforcing area of ring frame shape. The utility model discloses a novel structure sound unit, can increase diaphragm subassembly radiation area, and still can keep the sound unit of good waterproof performance.

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] With the development of technology, people have more and more functional requirements for electronic products with sound-producing functions. They not only require the sound-producing unit to have excellent acoustic performance, but also high waterproof performance. Therefore, existing waterproof sound-producing units generally have a front cover with an external fixing part for bonding the sound diaphragm. Some waterproof sound-producing units are also installed with the housing of the electronic product through the front cover.

[0003] To improve the performance of the sound unit, existing technologies typically choose to increase the radiation area of ​​the diaphragm assembly of the sound unit (i.e., increase the SD). However, with the volume of the sound unit remaining unchanged, increasing the SD requires a reduction in the horizontal width of the outer fixing part of the diaphragm, which leads to a reduction in the bonding area between the outer fixing part of the diaphragm and the front cover and frame, resulting in a decrease in waterproof performance. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a sound generating unit that can increase the radiation area of ​​the diaphragm assembly while maintaining good waterproof performance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0006] The basin stand includes a ring frame portion;

[0007] A diaphragm assembly, the diaphragm assembly including a diaphragm having an outer fixing portion, the outer fixing portion including a first portion and a second portion connected together, the first portion being an annular frame shape, the second portion being disposed along the outer edge of the first portion, the first portion being bonded to the top surface of the annular frame portion, and the second portion being bonded to the outer peripheral wall surface of the annular frame portion;

[0008] Front cover, the front cover having a surrounding wall fitted onto the second part;

[0009] The second part has an inner protruding ring that protrudes inward, and the ring frame portion presses the inner protruding ring to form a ring-shaped sealing reinforcement area on the contact surface between the second part and the enclosure wall; and / or, the second part has an outer protruding ring that protrudes outward, and the enclosure wall presses the outer protruding ring to form a ring-shaped sealing reinforcement area on the contact surface between the second part and the ring frame portion.

[0010] In one embodiment, the second part has an inner protruding ring, and the number of the inner protruding rings is one or more.

[0011] In one embodiment, the second part has an outer convex ring, and the number of the outer convex rings is one or more.

[0012] In one embodiment, the second part has both the inner convex ring and the outer convex ring, which are offset from each other in the height direction of the sound-generating unit; or, the inner convex ring and the outer convex ring are aligned in the height direction of the sound-generating unit.

[0013] In one embodiment, the second part has both the inner convex ring and the outer convex ring, wherein the cross-sectional shape of the inner convex ring is the same as or different from the cross-sectional shape of the outer convex ring.

[0014] In one embodiment, a pressure ring is also included, and the front cover further includes a main portion in the shape of a ring frame, the outer edge of the main portion being connected to the surrounding wall, the top surface of the pressure ring abutting against the main portion, and the bottom surface of the pressure ring abutting against the top surface of the first portion.

[0015] In one embodiment, the outer wall surface of the pressure ring is disposed close to the inner wall surface of the enclosure.

[0016] In one embodiment, the bottom end of the enclosure has a curved edge that bends outward.

[0017] In one embodiment, the diaphragm further has an inner fixing part and a deformable part, the inner fixing part, the deformable part and the outer fixing part are connected in sequence from the inside to the outside, and the connection between the deformable part and the outer fixing part is located close to the enclosure wall.

[0018] In one embodiment, the internal fixation part is connected to a center patch.

[0019] The beneficial effects of this utility model are as follows: This sound unit, through a novel combination structure of "dual-zone reconstruction of the external fixing part + radial locking of the surrounding wall protrusion ring", splits the traditional single-plane bonding of the diaphragm external fixing part into a ring-shaped first part and a downwardly extending second part. The former continues to be bonded to the top surface of the frame ring part, while the latter surrounds the outer peripheral wall of the ring part to form an axial adhesive path, greatly expanding the bonding area. At the same time, the front cover wall is fitted outside the second part, and the inner and / or outer protrusion rings are squeezed by the wall and the ring part, so that a ring-shaped sealing reinforcement area is dynamically generated between the second part and the wall and / or the second part and the ring part. This sealing reinforcement area geometrically extends the leakage water path and mechanically forms a continuous self-tightening seal by elastic compression. Even if the horizontal width of the external fixing part is further compressed, the waterproof level can still be ensured. 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 a cross-sectional view of the sound-generating unit according to Embodiment 1 of this utility model;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a cross-sectional view of a partial area of ​​the sound-generating unit in Embodiment 2 of this utility model;

[0024] Figure 4 This is a cross-sectional view of a partial area of ​​the sound-generating unit in Embodiment 3 of this utility model.

[0025] Explanation of icon numbers:

[0026] 1. Sink stand; 11. Frame section;

[0027] 2. Magnetic circuit assembly; 21. Yoke; 22. Central magnetic assembly; 23. Side magnetic assembly;

[0028] 3. Diaphragm assembly; 31. Diaphragm; 311. Inner fixing part; 312. Deformation part; 313. Outer fixing part; 3131. First part; 3132. Second part; 3133. Outer convex ring; 3134. Inner convex ring; 32. Center mount;

[0029] 4. Voice coil;

[0030] 5. Front cover; 51. Surrounding wall; 511. Curved edge; 52. Main part;

[0031] 6. Pressure ring. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Furthermore, if the meaning of "and / or" in the entire text is to include three parallel solutions, taking "and A / or B" as an example, it includes solution A, solution B, and a solution that simultaneously satisfies both A and B. 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 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 claimed by this utility model.

[0037] 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.

[0038] Example 1

[0039] Please refer to Figure 1 and Figure 2Embodiment 1 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 front cover 5. The magnetic assembly and the diaphragm assembly 3 are respectively connected to the frame 1. The frame 1 includes a ring frame portion 11. The magnetic circuit system includes a yoke 21 and a central magnetic assembly 22 and a side magnetic assembly 23 respectively disposed on the yoke 21. A magnetic gap is formed between the central magnetic assembly 22 and the side magnetic assembly 23 for the voice coil 4 to move. The central magnetic assembly 22 includes a central magnet and a central washer. The central magnet is located at the center of the central washer. Below, the central magnet is connected to the yoke 21 and the central washer respectively. The side magnet assembly 23 includes a side magnet and a side washer. The side magnet is located below the side washer. The side magnet is connected to the yoke 21 and the side washer respectively. In some embodiments, the side washer and the basin stand 1 are an integral structure formed by insert injection molding. Or, as in this embodiment, the side washer and the basin stand 1 are both metal structural parts. The side washer and the basin stand 1 are an integral structure formed by integral processing. It can be considered that the basin stand 1 also includes a side washer connected to the ring frame 11.

[0040] The diaphragm assembly 3 includes a diaphragm 31 and a center patch 32 disposed on the diaphragm 31. The diaphragm 31 includes an inner fixing part 311, a deformable part 312, and an outer fixing part 313 connected sequentially from the inside to the outside. The connection between the deformable part 312 and the outer fixing part 313 is located near the enclosure wall 51. The center patch 32 is connected to the inner fixing part 311. The voice coil 4 is connected to the center patch 32 or the inner fixing part 311. The outer fixing part 313 includes a connected first part 3131. The first part 3131 is in the shape of a ring frame, and the second part 3132 is arranged along the outer edge of the first part 3131, that is, the second part 3132 is in the shape of a continuous ring frame. The first part 3131 is bonded to the top surface of the ring frame 11, and the second part 3132 is bonded to the outer peripheral wall surface of the ring frame 11. The inner peripheral wall of the enclosure 51 is bonded to the second part 3132. The front cover 5 has an enclosure 51 fitted onto the second part 3132.

[0041] The second part 3132 has an inner protruding ring 3134 protruding inward, and the ring frame part 11 presses the inner protruding ring 3134 to form a ring-shaped sealing reinforcement area on the contact surface between the second part 3132 and the enclosure wall 51; and / or, the second part 3132 has an outer protruding ring 3133 protruding outward, and the enclosure wall 51 presses the outer protruding ring 3133 to form a ring-shaped sealing reinforcement area on the contact surface between the second part 3132 and the ring frame part 11.

[0042] In this embodiment, the second part 3132 has only one outer protruding ring 3133 protruding outward; in other embodiments, the number of outer protruding rings 3133 can be multiple, in which case there is a gap between two adjacent outer protruding rings 3133.

[0043] In one or more embodiments, the first part 3131 and the second part 3132 are vertically connected, and the inner fixing part 311, the deformation part 312, the first part 3131 and the second part 3132 are integrally formed into a single structure; the material of the diaphragm 31 includes at least one of rubber, TPEE and PEEK.

[0044] Optionally, the sound-generating unit further includes a pressure ring 6, and the front cover 5 further includes a main part 52 in the shape of a ring frame. The outer edge of the main part 52 is connected to the enclosure wall 51. The top surface of the pressure ring 6 abuts against the main part 52, and the bottom surface of the pressure ring 6 abuts against the top surface of the first part 3131. The outer wall surface of the pressure ring 6 is disposed close to the inner wall surface of the enclosure wall 51. Preferably, the top surface of the pressure ring 6 is bonded to the main part 52, the outer wall surface of the pressure ring 6 is bonded to the enclosure wall 51, and the bottom surface of the pressure ring 6 is bonded to the first part 3131. This can further improve the waterproof performance of the sound-generating unit.

[0045] In a preferred embodiment, the bottom end of the enclosure 51 has an outwardly bent edge 511. The curved edge 511 not only improves the structural strength of the enclosure 51, but also prevents the sharp edge of the bottom end of the enclosure 51 from scratching the outer fixing part 313 of the diaphragm 31 during the assembly of the front cover 5, thus improving the production yield. The curved edge 511 can be formed by bending during the processing of the front cover 5.

[0046] Example 2

[0047] Please refer to Figure 3 Embodiment 2 is a parallel technical solution to Embodiment 1. The difference between Embodiment 1 and Embodiment 2 is that the second part 3132 has only an inner convex ring 3134. The number of inner convex rings 3134 is one or more. When the number of inner folded rings is multiple, there is a gap between two adjacent inner convex rings 3134.

[0048] Example 3

[0049] Please refer to Figure 4Embodiment 2 is a parallel technical solution to Embodiment 1. The difference between Embodiment 1 and Embodiment 2 is that the second part 3132 has both an inner convex ring 3134 and an outer convex ring 3133. The inner convex ring 3134 and the outer convex ring 3133 are aligned in the height direction of the sound-generating unit. This can improve the sealing effect of the sealing reinforcement area to a greater extent and further improve the waterproof performance of the sound-generating unit.

[0050] In other embodiments, the inner convex ring 3134 and the outer convex ring 3133 may be misaligned in the height direction of the sound-generating unit.

[0051] The cross-sectional shape of the inner convex ring 3134 may be the same as or different from that of the outer convex ring 3133. When the cross-sectional shape of the inner convex ring 3134 is the same as that of the outer convex ring 3133, for example, both are trapezoidal or semi-circular, the cross-sectional shape of the inner convex ring 3134 may be the same as or different from that of the outer convex ring 3133.

[0052] 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: include The basin stand includes a ring frame portion; A diaphragm assembly, the diaphragm assembly including a diaphragm having an outer fixing portion, the outer fixing portion including a first portion and a second portion connected together, the first portion being an annular frame shape, the second portion being disposed along the outer edge of the first portion, the first portion being bonded to the top surface of the annular frame portion, and the second portion being bonded to the outer peripheral wall surface of the annular frame portion; Front cover, the front cover having a surrounding wall fitted onto the second part; The second part has an inner protruding ring that protrudes inward, and the ring frame portion presses the inner protruding ring to form a ring-shaped sealing reinforcement area on the contact surface between the second part and the enclosure wall; and / or, the second part has an outer protruding ring that protrudes outward, and the enclosure wall presses the outer protruding ring to form a ring-shaped sealing reinforcement area on the contact surface between the second part and the ring frame portion.

2. The sound-generating unit according to claim 1, characterized in that: The second part has an inner protruding ring, and the number of the inner protruding rings is one or more.

3. The sound-generating unit according to claim 1, characterized in that: The second part has an outer protruding ring, and the number of the outer protruding rings is one or more.

4. The sound-generating unit according to claim 1, characterized in that: The second part has both the inner convex ring and the outer convex ring, which are offset from each other in the height direction of the sound-generating unit; or, the inner convex ring and the outer convex ring are aligned in the height direction of the sound-generating unit.

5. The sound-generating unit according to claim 1, characterized in that: The second part has both an inner convex ring and an outer convex ring, wherein the cross-sectional shape of the inner convex ring is the same as or different from that of the outer convex ring.

6. The sound-generating unit according to claim 1, characterized in that: It also includes a pressure ring, and the front cover also includes a main part in the shape of a ring frame, the outer edge of the main part is connected to the surrounding wall, the top surface of the pressure ring abuts against the main part, and the bottom surface of the pressure ring abuts against the top surface of the first part.

7. The sound-generating unit according to claim 6, characterized in that: The outer wall surface of the pressure ring is positioned close to the inner wall surface of the enclosure.

8. The sound-generating unit according to claim 1, characterized in that: The bottom end of the enclosure has a curved edge that bends outward.

9. The sound-generating unit according to claim 1, characterized in that: The diaphragm also has an inner fixing part and a deformable part, the inner fixing part, the deformable part and the outer fixing part are connected in sequence from the inside to the outside, and the connection between the deformable part and the outer fixing part is located close to the enclosure wall.

10. The sound-generating unit according to claim 9, characterized in that: The internal fixation part is connected to a center patch.

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