Sound production unit and electronic equipment

Abstract

The utility model discloses a sounding unit and an electronic device, the sounding unit comprises a basin stand, a voice diaphragm and a front cover, the whole basin stand is in an annular frame shape, and the top of the basin stand is provided with an annular groove; the voice diaphragm comprises an inner fixing part, a folding ring part and an outer fixing part which are sequentially connected from inside to outside, and the outer fixing part is provided with a concave ring accommodated in the ring groove; the front cover is provided with a convex ring embedded into the concave ring; the convex ring is in interference fit with the concave ring, and the annular groove is in interference fit with the concave ring; the front cover is connected with the outer fixing part through a first adhesive layer in an adhesive mode, and the outer fixing part is connected with the basin stand through a second adhesive layer in an adhesive mode. In the sound production unit, the concave ring on the voice diaphragm increases the bonding and fixing area between the basin stand and the voice diaphragm, and the concave ring of the voice diaphragm deforms under the extrusion of the convex ring and the annular groove, so that the concave ring and the basin stand can be better attached, and the waterproof effect of the sound production unit is further improved to a greater extent.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit and an electronic device. 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] With the increase in waterproof level requirements for consumer electronic products such as mobile phones and watches, the industry's requirements for the waterproofness of sound units will also increase accordingly. At present, for ordinary waterproofing, the only measure adopted by existing technologies is to increase the bonding area of ​​the sound membrane. Although increasing the bonding area of ​​the sound membrane can improve the waterproof effect of the sound unit to a certain extent, it is still unsatisfactory overall. 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, and an electronic device with the sound-generating unit.

[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 ring groove is provided on the top of the basin frame;

[0007] A sound diaphragm, the sound diaphragm comprising an inner fixing portion, a folding ring portion and an outer fixing portion which are sequentially connected from the inside to the outside, the outer fixing portion having a concave ring received in the annular groove;

[0008] a front cover having a convex ring embedded in the concave ring;

[0009] The convex ring is interference fit with the concave ring, and the annular groove is interference fit with the concave ring;

[0010] The front cover is bonded to the outer fixing part through a first adhesive layer, and the outer fixing part is bonded to the basin frame through a second adhesive layer.

[0011] Furthermore, the cross section of the convex ring is rectangular.

[0012] Furthermore, the first adhesive layer is in a ring frame shape as a whole, and a cross section of the first adhesive layer includes a first horizontal portion, a first concave portion, and a second horizontal portion that are sequentially connected.

[0013] Furthermore, the second adhesive layer is in a ring frame shape as a whole, and a cross section of the second adhesive layer includes a third horizontal portion, a second concave portion, and a fourth horizontal portion which are connected in sequence.

[0014] Furthermore, the front cover comprises a ring frame body, the convex ring is located on the bottom surface of the ring frame body, and the convex ring and the ring frame body are an integral structure formed by integral processing.

[0015] Furthermore, the convex ring is a continuous and uninterrupted ring frame structure.

[0016] In order to solve the above technical problem, the utility model also adopts the following technical solution: an electronic device includes the above sound unit.

[0017] The beneficial effect of the utility model is that in the sound unit, the concave ring on the sound membrane increases the bonding and fixing area between the basin frame and the sound membrane, and the concave ring of the sound membrane is deformed under the extrusion of the convex ring and the ring groove, so that the concave ring and the basin frame can fit better, thereby greatly improving the waterproof effect 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 It is a structural schematic diagram of a basin frame in a sound unit according to the first embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the sound membrane in the sound unit of the first embodiment of the utility model.

[0022] Description of labels:

[0023] 1. Front cover; 11. Projecting ring; 12. Ring frame body;

[0024] 2. Sound membrane; 21. Inner fixing part; 22. Folding ring part; 23. Outer fixing part; 24. Concave ring;

[0025] 3. Basin stand; 31. Ring groove;

[0026] 4. first adhesive layer; 41. first horizontal portion; 42. first concave portion; 43. second horizontal portion;

[0027] 5. second adhesive layer; 51. third horizontal portion; 52. second concave portion; 53. fourth horizontal portion. DETAILED DESCRIPTION

[0028] 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.

[0029] Please refer to Figures 1 to 4, sound unit, including:

[0030] A basin frame 3, the basin frame 3 is in the shape of a ring frame as a whole, and a ring groove 31 is provided on the top of the basin frame 3;

[0031] The diaphragm 2 includes an inner fixing portion 21, a folding ring portion 22 and an outer fixing portion 23 which are sequentially connected from the inside to the outside, and the outer fixing portion 23 has a concave ring 24 received in the annular groove 31;

[0032] A front cover 1 having a convex ring 11 embedded in the concave ring 24;

[0033] The convex ring 11 is interference fit with the concave ring 24, and the annular groove 31 is interference fit with the concave ring 24;

[0034] The front cover 1 is adhesively connected to the outer fixing portion 23 via a first adhesive layer 4 , and the outer fixing portion 23 is adhesively connected to the basin frame 3 via a second adhesive layer 5 .

[0035] From the above description, it can be seen that the beneficial effect of the utility model is that: in the present sound unit, the concave ring 24 on the sound membrane 2 increases the bonding and fixing area between the basin frame 3 and the sound membrane 2, and the concave ring 24 of the sound membrane 2 is deformed under the extrusion of the convex ring 11 and the annular groove 31, so that the concave ring 24 and the basin frame 3 can fit better, thereby greatly improving the waterproof effect of the sound unit.

[0036] Furthermore, the cross section of the convex ring 11 is rectangular.

[0037] It can be seen from the above description that the convex ring 11 with a rectangular cross section is easy to manufacture and can better extrude the concave ring 24 so that the concave ring 24 fits better with the wall surface of the annular groove 31 .

[0038] Furthermore, the first adhesive layer 4 is in a ring frame shape as a whole, and the cross section of the first adhesive layer 4 includes a first horizontal portion 41 , a first concave portion 42 and a second horizontal portion 43 which are connected in sequence.

[0039] It can be seen from the above description that the first adhesive layer 4 is used in sufficient quantity so that the sound membrane 2 and the front cover 1 can be stably connected and fixed.

[0040] Furthermore, the second adhesive layer 5 is in a ring frame shape as a whole, and the cross section of the second adhesive layer 5 includes a third horizontal portion 51 , a second concave portion 52 and a fourth horizontal portion 53 which are connected in sequence.

[0041] It can be seen from the above description that the second adhesive layer 5 is used in sufficient quantity, so that the sound membrane 2 and the basin frame 3 can form a larger bonding and fixing area.

[0042] Furthermore, the front cover 1 includes a ring frame body 12 , the convex ring 11 is located on the bottom surface of the ring frame body 12 , and the convex ring 11 and the ring frame body 12 are an integral structure formed by integral processing.

[0043] It can be seen from the above description that the front cover 1 has a simple structure and is easy to manufacture.

[0044] Furthermore, the convex ring 11 is a continuous and uninterrupted ring frame structure.

[0045] It can be seen from the above description that the top of the sound-emitting unit can form a continuous and complete ring-frame-shaped waterproof structure.

[0046] An electronic device comprises the above-mentioned sound generating unit.

[0047] It can be seen from the above description that the electroacoustic transducer device in the electronic device has a good waterproof effect.

[0048] Embodiment 1

[0049] Embodiment 1 of the present invention is: an electronic device, including but not limited to a mobile phone, a smart watch, etc.; the electronic device is equipped with a sound unit.

[0050] Please refer to Figures 1 to 4 The sound unit includes a front cover 1, a basin frame 3, and a vibration component and a magnetic circuit component respectively connected to the basin frame 3. The basin frame 3 is in the shape of a ring frame as a whole, and a ring groove 31 is provided on the top of the basin frame 3; the magnetic circuit component has a magnetic gap, the vibration component includes a connected diaphragm component and a voice coil, and the voice coil is arranged corresponding to the magnetic gap. The diaphragm component includes a sound film 2, and the sound film 2 includes an inner fixing part 21, a folding ring part 22 and an outer fixing part 23 connected in sequence from the inside to the outside. The front cover 1 is glued to the outer fixing part 23 through a first glue layer 4, and the outer fixing part 23 is glued to the basin frame 3 through a second glue layer 5. The outer fixing part 23 has a concave ring 24 accommodated in the ring groove 31, and the front cover 1 has a convex ring 11 embedded in the concave ring 24. Preferably, the cross-section of the convex ring 11 is rectangular, the convex ring 11 is interference fit with the concave ring 24, and the ring groove 31 is interference fit with the concave ring 24.

[0051] In detail, the annular groove 31 has a first wall and a second wall opposite to each other, the concave ring 24 has a third wall and a fourth wall opposite to each other, and the convex ring 11 has a fifth wall and a sixth wall opposite to each other. The interference fit between the annular groove 31 and the concave ring 24 refers to that when the sound diaphragm 2 is not assembled (i.e. in a free state), the distance between the outer side surface of the third wall and the outer side surface of the fourth wall is greater than the distance between the first wall and the second wall; the interference fit between the convex ring 11 and the concave ring 24 refers to that when the sound diaphragm 2 is not assembled (i.e. in a free state), the distance between the inner side surface of the third wall and the inner side surface of the fourth wall is less than the distance between the fifth wall and the sixth wall. In the sound unit, the third wall and the fourth wall of the concave ring 24 are squeezed in the horizontal direction, so that the third wall of the concave ring 24 is close to the first wall of the annular groove 31, and the fourth wall of the concave ring 24 is close to the second wall of the annular groove 31.

[0052] Optionally, the diaphragm assembly further includes a spherical top connected to the sound membrane 2 . In this embodiment, the spherical top is mounted on the inner fixing portion 21 .

[0053] In this embodiment, the first adhesive layer 4 is in the shape of a ring frame as a whole, and the cross section of the first adhesive layer 4 includes a first horizontal portion 41, a first concave portion 42 and a second horizontal portion 43 connected in sequence; the second adhesive layer 5 is in the shape of a ring frame as a whole, and the cross section of the second adhesive layer 5 includes a third horizontal portion 51, a second concave portion 52 and a fourth horizontal portion 53 connected in sequence.

[0054] Specifically, the front cover 1 includes a ring frame body 12 , and the convex ring 11 is located on the bottom surface of the ring frame body 12 . Preferably, the convex ring 11 and the ring frame body 12 are an integral structure formed by integral processing.

[0055] The convex ring 11 is a continuous and uninterrupted ring frame structure, that is, the annular groove 31 is also a continuous and uninterrupted ring frame structure, and the concave ring 24 is also a continuous and uninterrupted ring frame structure.

[0056] To sum up, in the sound unit and electronic device provided by the utility model, the concave ring on the sound membrane of the sound unit increases the bonding and fixing area between the basin frame and the sound membrane, and the concave ring of the sound membrane is deformed under the extrusion of the convex ring and the ring groove, so that the concave ring and the basin frame can fit better, thereby greatly improving the waterproof effect of the sound unit.

[0057] 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 ring groove is provided on the top of the basin frame; A sound diaphragm, the sound diaphragm comprising an inner fixing portion, a folding ring portion and an outer fixing portion which are sequentially connected from the inside to the outside, the outer fixing portion having a concave ring received in the annular groove; a front cover having a convex ring embedded in the concave ring; The convex ring is interference fit with the concave ring, and the annular groove is interference fit with the concave ring; The front cover is bonded to the outer fixing part through a first adhesive layer, and the outer fixing part is bonded to the basin frame through a second adhesive layer.

2. The sound generating unit according to claim 1, characterized in that: The cross section of the convex ring is rectangular.

3. The sound generating unit according to claim 1, characterized in that: The first adhesive layer is in the shape of a ring frame as a whole, and a cross section of the first adhesive layer includes a first horizontal portion, a first concave portion and a second horizontal portion which are connected in sequence.

4. The sound generating unit according to claim 1, characterized in that: The second adhesive layer is in the shape of a ring frame as a whole, and a cross section of the second adhesive layer includes a third horizontal portion, a second concave portion and a fourth horizontal portion which are connected in sequence.

5. The sound generating unit according to claim 1, characterized in that: The front cover comprises a ring frame body, the convex ring is located on the bottom surface of the ring frame body, and the convex ring and the ring frame body are an integral structure formed by integral processing.

6. The sound generating unit according to claim 1, characterized in that: The convex ring is a continuous and uninterrupted ring frame structure.

7. An electronic device, characterized in that The invention comprises the sound-emitting unit as described in any one of claims 1 to 6.

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