sound production unit

Abstract

The utility model discloses a sound unit, including basin frame, diaphragm subassembly and front cover, the basin frame includes ring frame part, the diaphragm subassembly includes the sound film with outer fixed part, the outer fixed part includes the first department and second department of being linked, the first department is ring frame shape, the second department sets up along the outer edge of the first department, the first department is bonded with the top surface of ring frame part, the second department is bonded with the outer circumferential wall surface of ring frame part, the front cover has the wall that sets up on the second department, the wall has the convex ring that projects to the inside, the convex ring surrounds and extrudes the second department to make the second department and ring frame part contact surface form the sealed reinforced area of ring frame shape. The sound unit structure novel, can increase diaphragm subassembly radiation area while, still can keep good waterproof performance 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] 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] The front cover has a surrounding wall fitted onto the second part, the surrounding wall having an inwardly protruding ring that surrounds and presses the second part so that the contact surface between the second part and the ring frame portion forms a ring-shaped sealing reinforcement area.

[0009] In one embodiment, the convex ring and the surrounding wall are integrally formed into a single structure.

[0010] In one embodiment, the convex ring is a solid structure, or the convex ring is a hollow convex hull structure formed by stamping.

[0011] In one embodiment, the number of the protruding rings on the enclosure is one or more.

[0012] 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.

[0013] In one embodiment, the outer wall surface of the pressure ring is disposed close to the inner wall surface of the enclosure.

[0014] In one embodiment, the bottom end of the enclosure has a curved edge that bends outward.

[0015] In one embodiment, the outer peripheral wall of the ring frame portion is provided with a concave ring corresponding to the convex ring, and the cross-sectional width of the concave ring is smaller than the cross-sectional width of the convex ring.

[0016] 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.

[0017] In one embodiment, the internal fixation part is connected to a center patch.

[0018] 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 protruding 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 its inwardly protruding ring applies circumferential compression to the second part, dynamically generating a ring-shaped sealing reinforcement area between the second part and the ring part. This sealing reinforcement area geometrically extends the leakage water path and mechanically utilizes elastic compression to form a continuous self-tightening seal, ensuring that the waterproof level does not decrease even if the horizontal width of the external fixing part is further compressed. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a cross-sectional view of the sound-generating unit according to Embodiment 1 of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the front cover of the sound-generating unit in Embodiment 1 of this utility model;

[0023] Figure 4 This is a partial cross-sectional view of the sound-generating unit according to Embodiment 2 of this utility model;

[0024] Figure 5 This is a partial cross-sectional view of the sound-generating unit of Embodiment 3 of this utility model.

[0025] Explanation of icon numbers:

[0026] 1. Sink stand; 11. Ring frame; 111. Concave ring;

[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; 32. Center mount;

[0029] 4. Voice coil;

[0030] 5. Front cover; 51. Surrounding wall; 511. Protruding ring; 512. 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 Figures 1 to 3 Embodiment 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 first part 3131 and a second part 3132 connected together. The first part 3131 is in the shape of a ring frame, and the second part 3132 is in the shape of a ring frame. 32 is disposed along the outer edge of the first part 3131, the first part 3131 is bonded to the top surface of the ring frame part 11, the second part 3132 is bonded to the outer peripheral wall surface of the ring frame part 11, and the inner peripheral wall of the enclosure 51 is bonded to the second part 3132; the front cover 5 has an enclosure 51 sleeved on the second part 3132, the enclosure 51 has a protruding ring 511 protruding inward, the protruding ring 511 surrounds and presses the second part 3132 so that the contact surface between the second part 3132 and the ring frame part 11 forms a ring-shaped sealing reinforcement area.

[0041] In this embodiment, 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.

[0042] For ease of manufacturing, it is preferable that the convex ring 511 and the surrounding wall 51 are integrally formed; in this embodiment, the convex ring 511 is a solid structure.

[0043] In this embodiment, the number of protruding rings 511 on the enclosure 51 is one. In other embodiments, the number of protruding rings 511 on the enclosure 51 is multiple, and there is a gap between two adjacent protruding rings 511.

[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 512. The curved edge 512 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 512 can be formed by bending during the processing of the front cover 5.

[0046] Example 2

[0047] Please refer to Figure 4 Embodiment 2 is a parallel technical solution to Embodiment 1. The difference between Embodiment 1 and Embodiment 2 is that the convex ring 511 is a hollow convex structure formed by stamping. This allows the front cover 5 to be formed from a metal sheet of uniform thickness through stamping and other processes, which helps to control the manufacturing cost of the front cover 5.

[0048] Example 3

[0049] Please refer to Figure 5 Embodiment 3 is a parallel technical solution to Embodiment 1, but differs from Embodiment 1 in that: in this embodiment, the outer peripheral wall of the ring frame portion 11 is provided with a concave ring 111 corresponding to the convex ring 511, and the cross-sectional width of the concave ring 111 is smaller than the cross-sectional width of the convex ring 511. The cross-sectional width of the concave ring 111 refers to... Figure 5 The height dimension of the opening of the concave ring 111.

[0050] 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; The front cover has a surrounding wall fitted onto the second part, the surrounding wall having an inwardly protruding ring that surrounds and presses the second part so that the contact surface between the second part and the ring frame portion forms a ring-shaped sealing reinforcement area.

2. The sound-generating unit according to claim 1, characterized in that: The convex ring and the surrounding wall are integrally formed into a single structure.

3. The sound-generating unit according to claim 2, characterized in that: The convex ring is a solid structure, or the convex ring is a hollow convex hull structure formed by stamping.

4. The sound-generating unit according to claim 1, characterized in that: The number of the protruding rings on the enclosure is one or more.

5. 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.

6. The sound-generating unit according to claim 5, characterized in that: The outer wall surface of the pressure ring is positioned close to the inner wall surface of the enclosure.

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

8. The sound-generating unit according to claim 1, characterized in that: The outer peripheral wall of the ring frame is provided with a concave ring corresponding to the convex ring, and the cross-sectional width of the concave ring is smaller than the cross-sectional width of the convex ring.

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.

Images