Sound production unit

Abstract

The utility model discloses a sounding unit which comprises a basin stand, a voice diaphragm and a front cover, the top surface of the basin stand is provided with an annular groove, and the cross section of the annular groove is rectangular; the voice diaphragm comprises an outer fixing part, the outer fixing part is provided with a concave ring accommodated in the annular groove, the concave ring is provided with two oppositely-arranged enclosure walls, and the voice diaphragm and the basin stand are connected through a first adhesive layer in an adhesive mode; the front cover is provided with a contact ring frame, the bottom surface of the contact ring frame is connected with an annular convex rib, the annular convex rib is embedded into the concave ring, and the front cover is connected with the voice diaphragm through a second adhesive layer in an adhesive manner; one side, close to the annular convex rib, of the enclosure wall is provided with at least one first convex ring structure, a first glue accommodating area is formed between the first convex ring structure close to the contact ring frame and the contact ring frame, and a second glue accommodating area is formed below the first convex ring structure far away from the contact ring frame; and at least one second convex ring structure is arranged on one side, far away from the annular convex rib, of the enclosure wall. The bonding force between the voice diaphragm and the frame and between the voice diaphragm and the front cover is large, and the structural stability is good.

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, in most sound units, the basin frame, sound membrane and front cover are connected by gluing. The connection strength among the basin frame, sound membrane and front cover depends on the state of the glue. If the gluing state is not good or the amount of glue is insufficient, the sound membrane and the front cover, the sound membrane and the basin frame may not be well bonded, which may affect the structural stability of the sound unit. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sound-generating unit with a sound film stably connected to a basin frame and a front cover.

[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, wherein the top surface of the basin frame is provided with an annular groove, and the cross section of the annular groove is rectangular;

[0007] A sound diaphragm, the sound diaphragm comprising an external fixing portion, the external fixing portion having a concave ring received in the annular groove, the concave ring having two surrounding walls arranged opposite to each other, the sound diaphragm being adhesively connected to the basin frame via a first adhesive layer;

[0008] A front cover, wherein the front cover has a contact ring frame, a bottom surface of the contact ring frame is connected with an annular convex rib, the annular convex rib is embedded in the concave ring, and the front cover is adhesively connected to the sound membrane through a second adhesive layer;

[0009] At least one first convex ring structure is provided on a side of the surrounding wall close to the annular convex rib, a first glue-accommodating area is formed between the first convex ring structure close to the contact ring frame and the contact ring frame, and a second glue-accommodating area is formed below the first convex ring structure away from the contact ring frame; at least one second convex ring structure is provided on a side of the surrounding wall away from the annular convex rib, a third glue-accommodating area is formed between the second convex ring structure close to the external fixing part and the external fixing part, and a fourth glue-accommodating area is formed below the second convex ring structure away from the external fixing part.

[0010] Furthermore, the first convex ring structure abuts against the annular convex rib.

[0011] Furthermore, the second convex ring structure abuts against the basin frame.

[0012] Furthermore, there are multiple first convex ring structures on at least one of the surrounding walls, and a fifth glue containing area is formed between two upper and lower adjacent first convex ring structures.

[0013] Furthermore, there are multiple second convex ring structures on at least one of the surrounding walls, and a sixth glue containing area is formed between two upper and lower adjacent second convex ring structures.

[0014] Furthermore, the first convex ring structure and the second convex ring structure on the same surrounding wall are arranged in an up-and-down staggered manner.

[0015] Furthermore, the concave ring and the outer fixing portion are an integral structure formed by integral processing.

[0016] The beneficial effects of the utility model are as follows: the embedded design of the annular groove on the basin frame, the concave ring on the sound membrane and the annular convex rib on the front cover effectively increases the bonding connection area between the sound membrane, the basin frame and the front cover, thereby improving the stability of the bonding of the three, reducing the risk of separation between the front cover and the sound membrane, and the sound membrane and the basin frame, which is beneficial to improving the structural stability of the sound unit. More importantly, the setting of the first convex ring structure on the concave ring surrounding wall can form a first glue-containing area and a second glue-containing area between the annular convex rib and the concave ring, thereby increasing the total amount of glue that can be accommodated in the gap between the annular convex rib and the concave ring, thereby further improving the stability of the connection between the front cover and the sound membrane; the setting of the second convex ring structure on the concave ring surrounding wall can form a third glue-containing area and a fourth glue-containing area between the annular groove wall and the concave ring, thereby increasing the total amount of glue that can be accommodated in the gap between the annular groove and the concave ring, thereby further improving the stability of the connection between the basin frame and the sound membrane, so that the structural stability of the sound unit can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a part of the structure of the sound-emitting unit of the first embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A magnified view of detail A;

[0019] Figure 3 It is a schematic diagram of the structure of the sound film in the sound unit of the first embodiment of the utility model;

[0020] Figure 4 for Figure 3 A magnified view of detail B;

[0021] Description of labels:

[0022] 1. front cover; 11. contact ring frame; 12. annular rib;

[0023] 2. Basin stand; 21. Ring groove;

[0024] 3. External fixing part; 31. Concave ring; 311. Surrounding wall; 32. First convex ring structure; 33. Second convex ring structure;

[0025] 41. The first adhesive containing area; 42. The second adhesive containing area; 43. The third adhesive containing area; 44. The fourth adhesive containing area; 45. The fifth adhesive containing area; 46. The sixth adhesive containing area. DETAILED DESCRIPTION

[0026] 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.

[0027] Please refer to Figures 1 to 4 , sound unit, including:

[0028] A basin frame 2, wherein a ring groove 21 is provided on the top surface of the basin frame 2, and the cross section of the ring groove 21 is rectangular;

[0029] The sound diaphragm includes an outer fixing portion 3, the outer fixing portion 3 has a concave ring 31 received in the annular groove 21, the concave ring 31 has two surrounding walls 311 arranged opposite to each other, and the sound diaphragm is connected to the basin frame 2 by gluing through a first glue layer;

[0030] A front cover 1, wherein the front cover 1 has a contact ring frame 11, and a bottom surface of the contact ring frame 11 is connected with an annular convex rib 12, and the annular convex rib 12 is embedded in the concave ring 31, and the front cover 1 is adhesively connected to the sound membrane through a second adhesive layer;

[0031] At least one first convex ring structure 32 is provided on the side of the surrounding wall 311 close to the annular convex rib 12, a first glue-accommodating area 41 is formed between the first convex ring structure 32 close to the contact ring frame 11 and the contact ring frame 11, and a second glue-accommodating area 42 is formed below the first convex ring structure 32 away from the contact ring frame 11; at least one second convex ring structure 33 is provided on the side of the surrounding wall 311 away from the annular convex rib 12, a third glue-accommodating area 43 is formed between the second convex ring structure 33 close to the external fixing portion 3 and the external fixing portion 3, and a fourth glue-accommodating area 44 is formed below the second convex ring structure 33 away from the external fixing portion 3.

[0032] From the above description, it can be seen that the beneficial effects of the utility model are: the embedded design of the annular groove 21 on the basin frame 2, the concave ring 31 on the sound membrane and the annular convex rib 12 on the front cover 1 effectively increases the bonding connection area between the sound membrane and the basin frame 2 and the front cover 1, thereby improving the stability of the bonding of the three, reducing the risk of separation between the front cover 1 and the sound membrane, and the sound membrane and the basin frame 2, which is conducive to improving the structural stability of the sound unit. More importantly, the setting of the first convex ring structure 32 on the surrounding wall 311 of the concave ring 31 can form a first adhesive area 4 between the annular convex rib 12 and the concave ring 31. 1 and the second glue-containing area 42, thereby increasing the total amount of glue that the gap between the annular convex rib 12 and the concave ring 31 can accommodate, thereby further improving the stability of the connection between the front cover 1 and the sound membrane; the setting of the second convex ring structure 33 on the surrounding wall 311 of the concave ring 31 can form a third glue-containing area 43 and a fourth glue-containing area 44 between the wall surface of the annular groove 21 and the concave ring 31, thereby increasing the total amount of glue that the gap between the annular groove 21 and the concave ring 31 can accommodate, thereby further improving the stability of the connection between the basin frame 2 and the sound membrane, so that the structural stability of the sound unit can be further improved.

[0033] Furthermore, the first convex ring structure 32 abuts against the annular convex rib 12 .

[0034] As can be seen from the above description, the first convex ring structure 32 abuts against the wall surface of the annular convex rib 12 , so that the second glue containing area 42 can be closed, thereby better retaining the glue.

[0035] Furthermore, the second convex ring structure 33 abuts against the basin frame 2 .

[0036] As can be seen from the above description, the second convex ring structure 33 abuts against the wall surface of the annular groove 21 of the basin frame 2, so that the fourth glue containing area 44 can be closed, thereby better retaining the glue.

[0037] Furthermore, there are multiple first convex ring structures 32 on at least one of the surrounding walls 311 , and a fifth adhesive containing area 45 is formed between two upper and lower adjacent first convex ring structures 32 .

[0038] It can be seen from the above description that the existence of the fifth glue containing area 45 allows the gap between the annular convex rib 12 and the concave ring 31 to retain more glue.

[0039] Furthermore, there are multiple second convex ring structures 33 on at least one of the surrounding walls 311 , and a sixth adhesive containing area 46 is formed between two upper and lower adjacent second convex ring structures 33 .

[0040] It can be seen from the above description that the existence of the sixth glue containing area 46 allows the gap between the wall surface of the annular groove 21 and the concave ring 31 to retain more glue.

[0041] Furthermore, the first convex ring structure 32 and the second convex ring structure 33 on the same surrounding wall 311 are arranged in an up-and-down staggered manner.

[0042] Furthermore, the concave ring 31 and the outer fixing portion 3 are an integral structure formed by integral processing.

[0043] From the above description, it can be seen that the concave ring 31 can be integrally formed during the injection molding of the sound membrane, which facilitates the processing of the sound membrane. Moreover, the first convex ring structure 32 and the second convex ring structure 33 on the concave ring 31 can also be synchronously formed during the injection molding process of the sound membrane.

[0044] Embodiment 1

[0045] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a sound unit, which can be applied to electronic devices such as mobile phones, tablet computers, smart watches, game controllers, etc.

[0046] The sound-emitting unit includes a front cover 1, a basin frame 2, and a vibration component and a magnetic circuit component respectively connected to the basin frame 2, 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, the sound membrane is fixed to the basin frame 2 by glue, the front cover 1 is fixed to the sound membrane by glue, specifically, the sound membrane includes an inner fixing part, a folding ring part and an outer fixing part 3 which are sequentially connected from the inside to the outside, and the outer fixing part 3 is respectively glued to the basin frame 2 and the front cover 1.

[0047] In detail, the top surface of the basin frame 2 is provided with an annular groove 21, the cross section of the annular groove 21 is rectangular, the external fixing part 3 has a concave ring 31 received in the annular groove 21, the concave ring 31 has two surrounding walls 311 arranged opposite to each other, the sound membrane is connected to the basin frame 2 by a first adhesive layer, the front cover 1 has a contact ring frame 11, the bottom surface of the contact ring frame 11 is connected with an annular convex rib 12, the annular convex rib 12 is embedded in the concave ring 31, and the front cover 1 is connected to the sound membrane by a second adhesive layer. Optionally, the concave ring 31 and the external fixing part 3 are an integrated structure formed by integral processing.

[0048] In more detail, at least one first convex ring structure 32 is provided on the side of the surrounding wall 311 close to the annular convex rib 12, a first glue-accommodating area 41 is formed between the first convex ring structure 32 close to the contact ring frame 11 and the contact ring frame 11, and a second glue-accommodating area 42 is formed below the first convex ring structure 32 away from the contact ring frame 11; at least one second convex ring structure 33 is provided on the side of the surrounding wall 311 away from the annular convex rib 12, a third glue-accommodating area 43 is formed between the second convex ring structure 33 close to the external fixing portion 3 and the external fixing portion 3, and a fourth glue-accommodating area 44 is formed below the second convex ring structure 33 away from the external fixing portion 3.

[0049] Preferably, the first convex ring structure 32 abuts against the annular convex rib 12 ; and the second convex ring structure 33 abuts against the basin frame 2 .

[0050] Furthermore, there are multiple first convex ring structures 32 on at least one of the surrounding walls 311, and a fifth glue-containing area 45 is formed between two upper and lower adjacent first convex ring structures 32; there are multiple second convex ring structures 33 on at least one of the surrounding walls 311, and a sixth glue-containing area 46 is formed between two upper and lower adjacent second convex ring structures 33.

[0051] Preferably, the two surrounding walls 311 are respectively provided with a plurality of the first convex ring structures 32; the two surrounding walls 311 are respectively provided with a plurality of the second convex ring structures 33. In this embodiment, the two surrounding walls 311 are respectively provided with two first convex ring structures 32, and the two surrounding walls 311 are respectively provided with two second convex ring structures 33.

[0052] Optionally, the first convex ring structure 32 and the second convex ring structure 33 on the same surrounding wall 311 are arranged in a vertically staggered manner. In other embodiments, the first convex ring structure 32 and the second convex ring structure 33 on the same surrounding wall 311 are also arranged in an aligned manner.

[0053] The cross-section of the first convex ring structure 32 can be polygonal, semicircular, semi-elliptical, etc., which can be selected and set according to actual needs. Similarly, the cross-section of the second convex ring structure 33 can be polygonal, semicircular, semi-elliptical, etc., which can be selected and set according to actual needs. The cross-sectional shape of the first convex ring structure 32 and the cross-sectional shape of the second convex ring structure 33 can be the same or different.

[0054] In summary, in the sound unit provided by the utility model, the adhesive bonding force between the sound membrane and the basin frame, and between the sound membrane and the front cover is strong, and the structural stability is good.

[0055] 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, wherein the top surface of the basin frame is provided with an annular groove, and the cross section of the annular groove is rectangular; A sound diaphragm, the sound diaphragm comprising an external fixing portion, the external fixing portion having a concave ring received in the annular groove, the concave ring having two surrounding walls arranged opposite to each other, the sound diaphragm being adhesively connected to the basin frame via a first adhesive layer; A front cover, wherein the front cover has a contact ring frame, a bottom surface of the contact ring frame is connected with an annular convex rib, the annular convex rib is embedded in the concave ring, and the front cover is adhesively connected to the sound membrane through a second adhesive layer; At least one first convex ring structure is provided on a side of the surrounding wall close to the annular convex rib, a first glue-accommodating area is formed between the first convex ring structure close to the contact ring frame and the contact ring frame, and a second glue-accommodating area is formed below the first convex ring structure away from the contact ring frame; at least one second convex ring structure is provided on a side of the surrounding wall away from the annular convex rib, a third glue-accommodating area is formed between the second convex ring structure close to the external fixing part and the external fixing part, and a fourth glue-accommodating area is formed below the second convex ring structure away from the external fixing part.

2. The sound generating unit according to claim 1, characterized in that: The first convex ring structure abuts against the annular convex rib.

3. The sound generating unit according to claim 1, characterized in that: The second convex ring structure abuts against the basin frame.

4. The sound generating unit according to claim 1, characterized in that: The number of the first convex ring structures on at least one of the surrounding walls is plural, and a fifth glue containing area is formed between two upper and lower adjacent first convex ring structures.

5. The sound generating unit according to claim 1, characterized in that: There are multiple second convex ring structures on at least one of the surrounding walls, and a sixth glue containing area is formed between two upper and lower adjacent second convex ring structures.

6. The sound generating unit according to claim 1, characterized in that: The first convex ring structure and the second convex ring structure on the same surrounding wall are arranged in an up-and-down staggered manner.

7. The sound generating unit according to claim 1, characterized in that: The concave ring and the outer fixing portion are an integral structure formed by integral processing.

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