Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a voice coil and a voice diaphragm, the voice diaphragm comprises an inner fixing part, one side of the inner fixing part close to the voice coil is connected with two annular walls, the inner fixing part and the two annular walls form an accommodating groove for accommodating a top area of the voice coil, and one side of at least one annular wall close to the accommodating groove is provided with at least one convex ring structure. A first glue containing area is formed between the convex ring structure close to the inner fixing part and the inner fixing part, and a second glue containing area is formed below the convex ring structure far away from the inner fixing part. According to the sound production unit, the voice diaphragm is provided with the accommodating groove capable of accommodating the top area of the voice coil, so that the voice coil can be pre-positioned, the assembly consistency of the voice coil and the voice diaphragm is improved, and the production yield is improved; the arrangement of the convex ring structure on the ring wall can form a first glue accommodating area and a second glue accommodating area in the accommodating groove, thereby improving the total amount of the glue solution accommodated in the accommodating groove, further improving the stability of the connection between the voice coil and the voice diaphragm to a greater extent, and further reducing the risk of the separation between the voice coil and the voice diaphragm.

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] Considering the performance and cost of the sound unit, some sound units will adopt the injection molded sound membrane solution. In the sound unit, the voice coil and the injection molded sound membrane are generally connected by gluing. The connection strength between the voice coil and the sound membrane 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 voice coil are prone to poor bonding, which affects 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 stable connection between a sound film and a voice coil.

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

[0006] Voice coil;

[0007] The sound diaphragm includes an inner fixed portion, and two annular walls are connected to the side of the inner fixed portion close to the voice coil, and the inner fixed portion and the two annular walls form a receiving groove for receiving the top area of ​​the voice coil, and at least one of the annular walls is provided with at least one convex ring structure on the side close to the receiving groove, and a first glue holding area is formed between the convex ring structure close to the inner fixed portion and the inner fixed portion, and a second glue holding area is formed below the convex ring structure away from the inner fixed portion.

[0008] Furthermore, the convex ring structure is provided on both of the two ring walls.

[0009] Furthermore, the convex ring structures on the two ring walls are arranged opposite to each other.

[0010] Furthermore, the convex ring structure abuts against the voice coil.

[0011] Furthermore, there are multiple convex ring structures on at least one of the ring walls, and a third glue-containing area is formed between two adjacent convex ring structures among the multiple convex ring structures on the same ring wall.

[0012] Furthermore, the annular wall and the inner fixing portion are an integral structure formed by integral injection molding.

[0013] The beneficial effects of the utility model are as follows: the sound diaphragm in the sound unit itself has a receiving groove which can accommodate the top area of ​​the voice coil, so that the voice coil can be pre-positioned, which is beneficial to improve the consistency of the assembly of the voice coil and the sound diaphragm and improve the production yield. Moreover, the existence of the ring wall can increase the bonding area between the voice coil and the sound diaphragm, thereby reducing the risk of separation of the voice coil and the sound diaphragm. More importantly, the arrangement of the convex ring structure on the ring wall can form a first glue containing area and a second glue containing area in the receiving groove, thereby increasing the total amount of glue that can be contained in the receiving groove, thereby further improving the stability of the connection between the voice coil and the sound diaphragm and further reducing the risk of separation of the voice coil and the sound diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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;

[0015] Figure 2 for Figure 1 A magnified view of detail A;

[0016] 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;

[0017] Figure 4 for Figure 3 Enlarged view of detail B.

[0018] Description of labels:

[0019] 1. Sound film; 11. Internal fixing part; 12. Folding ring part; 13. External fixing part; 14. Ring wall; 15. Protruding ring structure; 16. First adhesive holding area; 17. Second adhesive holding area; 18. Third adhesive holding area;

[0020] 2. Voice coil;

[0021] 3. Pot rack. DETAILED DESCRIPTION

[0022] 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.

[0023] Please refer to Figures 1 to 4 , sound unit, including:

[0024] Voice coil 2;

[0025] The sound diaphragm 1 includes an inner fixing portion 11, and two annular walls 14 are connected to the side of the inner fixing portion 11 close to the voice coil 2. The inner fixing portion 11 and the two annular walls 14 form a receiving groove for receiving the top area of ​​the voice coil 2. At least one of the annular walls 14 is provided with at least one convex ring structure 15 on the side close to the receiving groove. A first glue containing area 16 is formed between the convex ring structure 15 close to the inner fixing portion 11 and the inner fixing portion 11, and a second glue containing area 17 is formed below the convex ring structure 15 away from the inner fixing portion 11.

[0026] From the above description, it can be seen that the beneficial effects of the utility model are: the sound membrane 1 in the sound unit itself has a receiving groove that can accommodate the top area of ​​the voice coil 2, which can pre-position the voice coil 2, which is beneficial to improve the consistency of the assembly of the voice coil 2 and the sound membrane 1, and improve the production yield. Moreover, the existence of the annular wall 14 can increase the bonding area between the voice coil 2 and the sound membrane 1, thereby reducing the risk of separation of the voice coil 2 and the sound membrane 1; more importantly, the setting of the convex ring structure 15 on the annular wall 14 can form a first glue holding area 16 and a second glue holding area 17 in the receiving groove, thereby increasing the total amount of glue that can be held in the receiving groove, thereby further improving the stability of the connection between the voice coil 2 and the sound membrane 1, and further reducing the risk of separation of the voice coil 2 and the sound membrane 1.

[0027] Furthermore, the convex ring structure 15 is provided on both of the two ring walls 14 .

[0028] It can be seen from the above description that both the inner and outer sides of the voice coil 2 have a first adhesive area 16 and a second adhesive area 17 , which is beneficial to further improve the bonding strength between the voice coil 2 and the sound membrane 1 .

[0029] Furthermore, the convex ring structures 15 on the two ring walls 14 are arranged opposite to each other.

[0030] It can be seen from the above description that the relative arrangement of the convex ring structures 15 on the two ring walls 14 can enable the voice coil 2 to achieve better pre-positioning.

[0031] Furthermore, the convex ring structure 15 contacts the voice coil 2 .

[0032] It can be seen from the above description that the convex ring structure 15 abuts against the voice coil 2 to close the first glue containing area 16, thereby better retaining the glue.

[0033] Furthermore, there are multiple convex ring structures 15 on at least one of the annular walls 14 , and a third adhesive containing area 18 is formed between two adjacent convex ring structures 15 among the multiple convex ring structures 15 on the same annular wall 14 .

[0034] It can be seen from the above description that the existence of the third glue containing area 18 allows the containing groove to hold more glue.

[0035] Furthermore, the annular wall 14 and the inner fixing portion 11 are an integral structure formed by integral injection molding.

[0036] It can be seen from the above description that the sound membrane 1 is easy to process and has a low manufacturing cost.

[0037] Embodiment 1

[0038] 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.

[0039] The sound-emitting unit includes a basin frame 3 and a vibration component and a magnetic circuit component respectively connected to the basin frame 3, the magnetic circuit component has a magnetic gap, the vibration component includes a diaphragm component and a voice coil 2 connected to the diaphragm component, the voice coil 2 is arranged corresponding to the magnetic gap, the diaphragm component includes a sound membrane 1, and the voice coil 2 is fixed to the sound membrane 1 by glue.

[0040] In detail, the sound membrane 1 includes an inner fixing portion 11, a folding ring portion 12 and an outer fixing portion 13 which are connected in sequence from the inside to the outside, the outer fixing portion 13 is connected to the basin frame 3, and two annular walls 14 are connected to the side of the inner fixing portion 11 close to the voice coil 2, the inner fixing portion 11 and the two annular walls 14 form a receiving groove for accommodating the top area of ​​the voice coil 2, at least one of the annular walls 14 is provided with at least one convex ring structure 15 on the side close to the receiving groove, a first glue containing area 16 is formed between the convex ring structure 15 close to the inner fixing portion 11 and the inner fixing portion 11, and a second glue containing area 17 is formed below the convex ring structure 15 away from the inner fixing portion 11.

[0041] Preferably, the convex ring structure 15 is disposed on both of the two annular walls 14. Optionally, the convex ring structures 15 on the two annular walls 14 are disposed opposite to each other. Of course, in other embodiments, only one of the annular walls 14 may be provided with the convex ring structure 15.

[0042] In order to better achieve pre-positioning of the voice coil 2 and the sound membrane 1, in this embodiment, the convex ring structure 15 contacts the voice coil 2. In other words, it can also be considered that the voice coil 2 and the sound membrane 1 are interference fit.

[0043] As a preferred embodiment, there are multiple convex ring structures 15 on at least one of the annular walls 14, and a third adhesive holding area 18 is formed between two adjacent convex ring structures 15 on the same annular wall 14. In this embodiment, two convex ring structures 15 are provided on each of the two annular walls 14.

[0044] In order to facilitate the processing and manufacturing of the sound membrane 1 , it is preferred that the annular wall 14 and the inner fixing portion 11 are an integral structure formed by integral injection molding. In this case, the convex ring structure 15 can be considered as a partial area of ​​the annular wall 14 .

[0045] The cross-section of the convex ring structure 15 can be polygonal, semicircular, semi-elliptical, etc., and can be selected and set according to actual needs.

[0046] In summary, the sound diaphragm itself in the sound unit provided by the utility model has a receiving groove that can accommodate the top area of ​​the voice coil, which can pre-position the voice coil, which is beneficial to improve the consistency of the assembly of the voice coil and the sound diaphragm and improve the production yield. Moreover, the existence of the ring wall can increase the bonding area between the voice coil and the sound diaphragm, thereby reducing the risk of separation between the voice coil and the sound diaphragm; more importantly, the arrangement of the convex ring structure on the ring wall can form a first glue containing area and a second glue containing area in the receiving groove, thereby increasing the total amount of glue that can be contained in the receiving groove, thereby further improving the stability of the connection between the voice coil and the sound diaphragm, and further reducing the risk of separation between the voice coil and the sound diaphragm.

[0047] 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 Voice coil; The sound diaphragm includes an inner fixed portion, and two annular walls are connected to the side of the inner fixed portion close to the voice coil, and the inner fixed portion and the two annular walls form a receiving groove for receiving the top area of ​​the voice coil, and at least one of the annular walls is provided with at least one convex ring structure on the side close to the receiving groove, and a first glue holding area is formed between the convex ring structure close to the inner fixed portion and the inner fixed portion, and a second glue holding area is formed below the convex ring structure away from the inner fixed portion.

2. The sound generating unit according to claim 1, characterized in that: The convex ring structure is provided on both of the ring walls.

3. The sound generating unit according to claim 2, characterized in that: The convex ring structures on the two ring walls are arranged opposite to each other.

4. The sound generating unit according to claim 1, characterized in that: The convex ring structure abuts against the voice coil.

5. The sound generating unit according to claim 1, characterized in that: There are multiple convex ring structures on at least one of the ring walls, and a third glue-containing area is formed between two adjacent convex ring structures among the multiple convex ring structures on the same ring wall.

6. The sound generating unit according to claim 1, characterized in that: The annular wall and the inner fixing portion are an integral structure formed by integral injection molding.

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