Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand, a front cover, a voice diaphragm and a rubber ring, and is characterized in that the top surface of the basin stand is provided with a first step structure; the front cover comprises an annular frame-shaped mounting part, the bottom surface of the mounting part is provided with a second step structure embedded with the first step structure, and the top surface of the mounting part is provided with a step structure; the sound film comprises a first branch and a second branch, the first branch is in a step shape, and the first branch is located between the first step structure and the second step structure and is in adhesive connection with the first step structure and the second step structure. The second branch comprises a first part bonded with the inner wall of the mounting part and a second part bonded with the step surface of the step structure, the first part is connected with the second part, and a glue accommodating groove is formed between one end, far away from the first part, of the second part and the vertical surface of the step structure; and at least part of the rubber ring is positioned in the rubber containing groove. The sound production unit is stable in structure and good in waterproof effect.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit. Background Art

[0002] As a common electroacoustic transducer device that converts electrical energy into sound energy, the sound unit plays an indispensable role in the sound amplification system.

[0003] At present, the waterproof performance of sound units is generally improved by increasing the bonding area of ​​the sound membrane. However, with the improvement of the waterproof level requirements of electronic products such as mobile phones and watches, the waterproof requirements for the sound units mounted thereon will also be increased accordingly. The waterproof method of flat bonding has begun to fail to meet the needs of the application end. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sound-generating unit with good waterproof effect.

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

[0006] A basin frame, the basin frame is in the shape of a ring frame as a whole, and a first step structure is provided on the top surface of the basin frame;

[0007] A front cover, the front cover comprising a mounting portion in the shape of a ring frame, a bottom surface of the mounting portion being provided with a second step structure engaged with the first step structure, and a top surface of the mounting portion being provided with a step structure;

[0008] A sound diaphragm, the sound diaphragm comprises an inner fixing portion, a folding ring portion and an outer fixing portion connected in sequence from the inside to the outside, the outer fixing portion comprises a first branch and a second branch, the first branch and the second branch are both connected to the folding ring portion, the first branch is stepped, the first branch is located between the first step structure and the second step structure and are respectively glued to the first step structure and the second step structure, the second branch comprises a first part glued to the inner wall of the mounting portion and a second part glued to the step surface of the step structure, the first part is connected to the second part, and a glue-containing groove is formed between an end of the second part away from the first part and a vertical surface of the step structure;

[0009] The rubber ring is formed by solidifying liquid sealant, the rubber ring is at least partially located in the glue containing groove, and the rubber ring contacts the end surface of the second part away from the first part and the inner surface of the glue containing groove.

[0010] Furthermore, one end of the first branch away from the folding ring portion also has a rim, and the rim is connected to the outer wall of the mounting portion.

[0011] Furthermore, an outer wall of the mounting portion is provided with a receiving groove, and at least a partial area of ​​the edging is located in the receiving groove.

[0012] Furthermore, the inner edge of the rubber ring covers an edge area of ​​the top surface of the second part.

[0013] Furthermore, it also includes a dustproof mesh cloth, which is connected to the top surface of the outer fixing part, and the rubber ring contacts the peripheral wall of the dustproof mesh cloth.

[0014] Furthermore, the inner edge of the rubber ring covers the edge area of ​​the top surface of the dustproof mesh cloth.

[0015] Furthermore, a guiding slope is provided at the top of the facade of the step structure.

[0016] Furthermore, a lower groove is provided at the connection between the step surface and the vertical surface of the step structure, and the lower groove is connected to the glue containing groove. The second branch also includes a third part, and the third part is connected to an end of the second part away from the first part. The third part extends into the lower groove and is bonded to the wall surface of the lower groove, and the bottom end of the rubber ring sinks into the lower groove.

[0017] The beneficial effect of the utility model is that the external fixing part of the sound membrane of the sound unit is composed of two branches, and the first branch and the second branch both have a bending structure, which can not only effectively increase the bonding area between the sound membrane and the front cover, and the sound membrane and the basin frame, but also the bending path can make it more difficult for water vapor to invade, greatly improving the waterproof performance and structural stability of the sound unit. A rubber groove for accommodating the rubber ring is formed between the end of the second branch and the vertical surface of the installation step. The presence of the rubber ring further improves the stability of the connection between the sound membrane and the front cover, and the rubber ring can also prevent the edge of the second part of the first branch from being lifted by the impact of the water flow, so that the connection between the first branch and the front cover fails and the waterproof ability is reduced. The sound membrane of the sound unit can be stably connected to the front cover and the basin frame, which is conducive to ensuring the structural stability of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of a part of the structure of the sound-emitting unit of the first embodiment of the utility model;

[0019] Figure 2 for Figure 1 A magnified view of detail A;

[0020] Figure 3 An exploded view of a part of the structure of the sound-emitting unit of the first embodiment of the present utility model;

[0021] Figure 4 It is a cross-sectional view of a part of the structure of the sound-emitting unit of the second embodiment of the present utility model;

[0022] Figure 5 It is a cross-sectional view of a part of the structure of the sound-emitting unit of the third embodiment of the present utility model;

[0023] Figure 6 It is a cross-sectional view of a part of the structure of the sound-emitting unit of the fourth embodiment of the present utility model;

[0024] Figure 7 for Figure 6 A magnified view of detail B;

[0025] Figure 8 It is a cross-sectional view of a part of the structure of the sound-emitting unit of the fifth embodiment of the present invention.

[0026] Description of labels:

[0027] 1. Basin stand;

[0028] 2. Front cover;

[0029] 3. Ring part;

[0030] 4. First branch; 41. Edge binding;

[0031] 5. Second branch; 51. First part; 52. Second part; 53. Third part;

[0032] 6. Rubber ring;

[0033] 7. Dust-proof mesh;

[0034] 8. Top of the ball. DETAILED DESCRIPTION

[0035] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0036] Please refer to Figures 1 to 8 , sound unit, including:

[0037] A basin frame 1, wherein the basin frame 1 is in the shape of a ring frame as a whole, and a first step structure is provided on the top surface of the basin frame 1;

[0038] A front cover 2, wherein the front cover 2 comprises a mounting portion in the shape of a ring frame, a bottom surface of the mounting portion is provided with a second step structure engaged with the first step structure, and a top surface of the mounting portion is provided with a step structure;

[0039] A sound diaphragm, the sound diaphragm comprises an inner fixing portion, a folding ring portion 3 and an outer fixing portion which are sequentially connected from the inside to the outside, the outer fixing portion comprises a first branch 4 and a second branch 5, the first branch 4 and the second branch 5 are both connected to the folding ring portion 3, the first branch 4 is stepped, the first branch 4 is located between the first step structure and the second step structure and are respectively glued to the first step structure and the second step structure, the second branch 5 comprises a first portion 51 glued to the inner wall of the mounting portion and a second portion 52 glued to the step surface of the step structure, the first portion 51 is connected to the second portion 52, and a glue-containing groove is formed between an end of the second portion 52 away from the first portion 51 and a vertical surface of the step structure;

[0040] The rubber ring 6 is formed by solidifying liquid sealant. The rubber ring 6 is at least partially located in the sealant groove. The rubber ring 6 contacts the end surface of the second part 52 away from the first part 51 and the inner surface of the sealant groove.

[0041] From the above description, it can be seen that the beneficial effect of the utility model is that the outer fixing part of the sound membrane of the sound unit is composed of two branches, and the first branch 4 and the second branch 5 both have a bending structure, which can not only effectively increase the bonding area between the sound membrane and the front cover 2, and the sound membrane and the basin frame 1, but also the bending path can make it more difficult for water vapor to invade, greatly improving the waterproof performance and structural stability of the sound unit. A rubber groove for accommodating the rubber ring 6 is formed between the end of the second branch 5 and the vertical surface of the installation step. The presence of the rubber ring 6 further improves the stability of the connection between the sound membrane and the front cover 2, and the rubber ring 6 can also prevent the edge of the second part 52 of the first branch 4 from being lifted by the impact of the water flow, so that the connection between the first branch 4 and the front cover 2 fails and the waterproof ability is reduced.

[0042] Furthermore, one end of the first branch 4 away from the folding ring portion 3 further has a rim 41 , and the rim 41 is connected to the outer wall of the mounting portion.

[0043] From the above description, it can be seen that the presence of the edging 41 can further increase the bonding area between the first branch 4 and the front cover 2, thereby reducing the risk of external water vapor entering the interior of the sound unit through the gap between the first branch 4 and the front cover 2.

[0044] Furthermore, a receiving groove is provided on the outer wall of the mounting portion, and at least a partial area of ​​the edge covering 41 is located in the receiving groove.

[0045] It can be seen from the above description that the provision of the receiving groove facilitates the positioning and installation of the edge package 41 , while reducing the risk of the edge package 41 being impacted by external water flow and thus being separated from the front cover 2 .

[0046] Furthermore, the inner edge of the rubber ring 6 covers the edge area of ​​the top surface of the second part 52 .

[0047] It can be seen from the above description that the second part 52 can achieve a better sealing connection with the front cover 2, and further reduce the risk of external water flow impacting the edge of the second part 52 so that the second part 52 is lifted.

[0048] Furthermore, it also includes a dustproof mesh cloth 7, which is connected to the top surface of the outer fixing part, and the rubber ring 6 contacts the peripheral wall of the dustproof mesh cloth 7.

[0049] It can be seen from the above description that the presence of the rubber ring 6 can improve the stability of the connection between the outer fixing part and the dustproof mesh 7 .

[0050] Furthermore, the inner edge of the rubber ring 6 covers the edge area of ​​the top surface of the dustproof mesh cloth 7 .

[0051] It can be seen from the above description that the bonding area between the rubber ring 6 and the dustproof mesh 7 is large, so that the installation of the dustproof mesh 7 is more stable.

[0052] Furthermore, a guiding slope is provided at the top of the facade of the step structure.

[0053] It can be seen from the above description that the existence of the guiding inclined surface facilitates the injection of glue into the glue containing groove to form the rubber ring 6 .

[0054] Furthermore, a lower groove is provided at the connection between the step surface and the vertical surface of the step structure, and the lower groove is connected to the glue containing groove. The second branch 5 also includes a third part 53, and the third part 53 is connected to the end of the second part 52 away from the first part 51. The third part 53 extends into the lower groove and is bonded to the wall surface of the lower groove. The bottom end of the rubber ring 6 sinks into the lower groove.

[0055] As can be seen from the above description, the setting of the lower groove can increase the adhesive area between the second branch 5 and the front cover 2 to a greater extent, improve the waterproof ability of the joint surface area between the second branch 5 and the front cover 2, and reduce the risk of separation of the second branch 5 and the front cover 2.

[0056] Embodiment 1

[0057] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a sound unit, which can be applied to electronic devices such as mobile phones and watches.

[0058] The sound-emitting unit includes a basin frame 1, a front cover 2, and a magnetic circuit component and a vibration component respectively connected to the basin frame 1, the magnetic circuit component has a magnetic gap, the vibration component includes a diaphragm component and a voice coil connected to the diaphragm component, the voice coil is arranged corresponding to the magnetic gap, the diaphragm component includes a sound membrane and a ball top 8, the sound membrane includes an inner fixing part, a folding ring part 3 and an outer fixing part connected in sequence from the inside to the outside, the ball top 8 is connected to the inner fixing part, and the outer fixing part is connected to the basin frame 1, the basin frame 1 is in the shape of a ring frame as a whole, and the top surface of the basin frame 1 is provided with a first step structure; the front cover 2 includes a mounting part in the shape of a ring frame, the bottom surface of the mounting part is provided with a second step structure embedded with the first step structure, and the top surface of the mounting part is provided with a step structure; the outer fixing part includes a first branch 4 and a second branch 5, the first The branch 4 and the second branch 5 are both connected to the folding ring portion 3, the first branch 4 is stepped, the first branch 4 is located between the first step structure and the second step structure and is respectively adhesively connected to the first step structure and the second step structure, the second branch 5 includes a first part 51 adhesively connected to the inner wall of the mounting portion and a second part 52 adhesively connected to the step surface of the step structure, the first part 51 is vertically connected to the second part 52, and a glue-containing groove is formed between an end of the second part 52 away from the first part 51 and the vertical surface of the step structure; the sound unit also includes a rubber ring 6, the rubber ring 6 is formed by solidifying liquid sealant, the rubber ring 6 is at least partially located in the glue-containing groove, and the rubber ring 6 contacts the end face of the second part 52 away from the first part 51 and the inner surface of the glue-containing groove.

[0059] Optionally, the first branch 4 further has a rim 41 at one end away from the folding ring 3, and the rim 41 is connected to the outer wall of the mounting portion. In this case, the outer wall of the mounting portion is provided with a receiving groove, and at least part of the rim 41 is located in the receiving groove.

[0060] In this embodiment, the sound unit further includes a dustproof mesh 7, which is connected to the top surface of the outer fixing portion, and the rubber ring 6 contacts the peripheral wall of the dustproof mesh 7. Preferably, the inner edge of the rubber ring 6 covers the edge area of ​​the top surface of the dustproof mesh 7.

[0061] To facilitate the injection of glue into the glue containing groove, optionally, a guiding slope is provided at the top of the vertical surface of the step structure.

[0062] Embodiment 2

[0063] Please refer to Figure 4 The second embodiment of the present invention is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: in the sound-emitting unit of this embodiment, the first branch 4 does not have a edging 41.

[0064] Embodiment 3

[0065] Please refer to Figure 5 Embodiment 3 of the present invention is a parallel technical solution of Embodiment 1, and is different from Embodiment 1 in that the sound-emitting unit of this embodiment does not have a dustproof mesh cloth 7. At this time, the inner edge of the rubber ring 6 covers the edge area of ​​the top surface of the second part 52.

[0066] Embodiment 4

[0067] Please refer to Figure 6 and Figure 7 , Embodiment 4 of the present utility model is further optimized on the basis of Embodiment 1, and is different from Embodiment 1 in that: a lower groove is provided at the connection between the step surface and the vertical surface of the step structure, and the lower groove is connected to the glue containing groove, and the second branch 5 also includes a third part 53. In the second branch 5, the third part 53 is connected to the end of the second part 52 away from the first part 51, and the third part 53 extends into the lower groove and is bonded to the wall surface of the lower groove, and the bottom end of the rubber ring 6 is sunk into the lower groove.

[0068] Preferably, the second part 52 is vertically connected to the third part 53 .

[0069] Embodiment 5

[0070] Please refer to Figure 8 Embodiment 5 of the present invention is a parallel technical solution of embodiment 4, and is different from embodiment 4 in that the sound-emitting unit of this embodiment does not have a dustproof mesh cloth 7. At this time, the inner edge of the rubber ring 6 covers the edge area of ​​the top surface of the second part 52.

[0071] In summary, the external fixing part of the sound membrane of the sound unit provided by the utility model is composed of two branches, and the first branch and the second branch both have a bending structure, which can not only effectively increase the bonding area between the sound membrane and the front cover, and the sound membrane and the basin frame, but also the bending path can make it more difficult for water vapor to invade, greatly improving the waterproof performance and structural stability of the sound unit. A rubber groove for accommodating the rubber ring is formed between the end of the second branch and the vertical surface of the installation step. The presence of the rubber ring further improves the stability of the connection between the sound membrane and the front cover, and the rubber ring can also prevent the edge of the second part of the first branch from being lifted up by the impact of the water flow, so that the connection between the first branch and the front cover fails and the waterproof ability is reduced. The sound membrane of the sound unit can be stably connected to the front cover and the basin frame, which is conducive to ensuring the structural stability of the sound unit.

[0072] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sound generating unit, characterized in that: include A basin frame, the basin frame is in the shape of a ring frame as a whole, and a first step structure is provided on the top surface of the basin frame; A front cover, the front cover comprising a mounting portion in the shape of a ring frame, a bottom surface of the mounting portion being provided with a second step structure engaged with the first step structure, and a top surface of the mounting portion being provided with a step structure; A sound diaphragm, the sound diaphragm comprises an inner fixing portion, a folding ring portion and an outer fixing portion connected in sequence from the inside to the outside, the outer fixing portion comprises a first branch and a second branch, the first branch and the second branch are both connected to the folding ring portion, the first branch is stepped, the first branch is located between the first step structure and the second step structure and are respectively glued to the first step structure and the second step structure, the second branch comprises a first part glued to the inner wall of the mounting portion and a second part glued to the step surface of the step structure, the first part is connected to the second part, and a glue-containing groove is formed between an end of the second part away from the first part and a vertical surface of the step structure; The rubber ring is formed by solidifying liquid sealant, the rubber ring is at least partially located in the glue containing groove, and the rubber ring contacts the end surface of the second part away from the first part and the inner surface of the glue containing groove.

2. The sound generating unit according to claim 1, characterized in that: One end of the first branch away from the folding ring portion further has a rim, and the rim is connected to the outer wall of the mounting portion.

3. The sound generating unit according to claim 2, characterized in that: The outer wall of the mounting portion is provided with a receiving groove, and at least a partial area of ​​the edge wrapping is located in the receiving groove.

4. The sound generating unit according to claim 1, characterized in that: The inner edge of the rubber ring covers an edge area of ​​the top surface of the second part.

5. The sound generating unit according to claim 1, characterized in that: It also includes a dustproof mesh cloth, which is connected to the top surface of the outer fixing portion, and the rubber ring contacts the peripheral wall of the dustproof mesh cloth.

6. The sound generating unit according to claim 5, characterized in that: The inner edge of the rubber ring covers the edge area of ​​the top surface of the dustproof mesh cloth.

7. The sound generating unit according to claim 1, characterized in that: A guiding slope is arranged at the top of the facade of the step structure.

8. The sound generating unit according to claim 1, characterized in that: A lower groove is provided at the connection between the step surface and the vertical surface of the step structure, and the lower groove is connected to the glue containing groove. The second branch also includes a third part, and the third part is connected to an end of the second part away from the first part. The third part extends into the lower groove and is bonded to the wall surface of the lower groove, and the bottom end of the rubber ring sinks into the lower groove.

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