Sound production unit and loudspeaker

Abstract

The utility model discloses a sound production unit which comprises a front cover, the edge of the front cover extends outwards to form a connecting part, and the edge of the connecting part extends outwards and is bent to form a pin; the base is provided with a connecting part and a positioning groove, the basin stand is provided with a positioning groove and a hot melting convex block, the hot melting convex block is arranged on the side edge of the positioning groove, the pin is arranged in the positioning groove, the hot melting convex block is provided with an avoiding through groove communicated with the positioning groove, and the hot melting convex block covers a groove opening of the positioning groove and the connecting part after being subjected to hot melting. The sounding unit provided by the utility model is simple in structure, convenient and fast to assemble, and high in falling and vibration reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a sound generating unit and a loudspeaker. 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 amplifier system. With the development of consumer electronic products such as mobile phones and tablets, especially large wearable electronic devices such as AR / VR, which have put forward higher requirements on lightness and thinness in appearance and performance, the sound unit, as an important component of such products, has also put forward higher and higher requirements on its performance and size. As the sound unit tends to be lighter and thinner, the thickness of its sound membrane and middle sticker is getting thinner and thinner. In order to prevent the deformation of the sound membrane and the middle sticker, the existing sound unit is provided with a front cover to protect the vibration component of the sound unit. However, the front cover of the existing sound unit and the basin frame are only fixed by positioning columns. When the sound unit is vibrated or falls, the positioning column may break and cause the front cover to fall off. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sound unit to solve the problem that the front cover of the existing sound unit is easy to fall off when it is vibrated or dropped.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sound unit, comprising:

[0005] A front cover, wherein the edge of the front cover extends outward to form a connecting portion, and the edge of the connecting portion extends outward and bends to form a pin;

[0006] A basin frame, wherein a positioning groove and a hot-melt protrusion are provided on the basin frame, wherein the hot-melt protrusion is arranged on the side of the positioning groove, wherein the pin is arranged in the positioning groove, and wherein the hot-melt protrusion is provided with an avoidance groove connected with the positioning groove, wherein the hot-melt protrusion covers the notch of the positioning groove and the connecting portion after hot-melting.

[0007] Furthermore, the pin is interference fit with the positioning groove.

[0008] Furthermore, a radial cross-sectional area of ​​the pin decreases along an end thereof away from the connecting portion.

[0009] Furthermore, the radial cross-section of the hot-melt protrusion is an isosceles trapezoid.

[0010] Furthermore, the avoidance groove is provided on one side of the lower bottom of the radial cross section of the hot melt protrusion.

[0011] Furthermore, a limiting protrusion is also provided on the basin frame, and the limiting protrusion is arranged on a side of the hot melt protrusion away from the positioning groove.

[0012] Furthermore, an inclined side wall is provided on a side of the limiting protrusion away from the positioning groove.

[0013] Furthermore, the basin frame is a rectangular basin frame, and the positioning grooves are provided at the four corners of the rectangular basin frame.

[0014] Furthermore, the height of the upper surface of the connecting portion is lower than the upper surface of the front cover.

[0015] The utility model also provides a loudspeaker, comprising the above-mentioned sound-generating unit.

[0016] The beneficial effect of the utility model is that when assembling the sound unit provided by the utility model, the pins of the front cover are fixed in the positioning grooves of the basin frame, and then the hot-melt protrusions are hot-melted so that the hot-melt protrusions cover the notches and connecting parts of the positioning grooves after hot-melting. Specifically, after hot-melt protrusions are hot-melted, a baffle structure covering the notches and connecting parts of the positioning grooves is formed, and the baffle structure can fix the front cover. Even if the pins are broken, the front cover will not fall off under the action of the baffle structure. Therefore, the sound unit provided by the utility model has a simple structure, is easy and quick to assemble, and has high reliability in falling and vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the sound-generating unit of the utility model in one embodiment before hot melting;

[0018] Figure 2 for Figure 1 The structural exploded diagram of the sound unit shown;

[0019] Figure 3 for Figure 2 Enlarged view of part A;

[0020] Figure 4 for Figure 1 The structure diagram of the sound unit shown in the hot-melt state;

[0021] Figure 5 for Figure 1 A cross-sectional view of the sound unit shown in ;

[0022] Figure 6 for Figure 5 A magnified view of part B before hot melting;

[0023] Figure 7 for Figure 5 An enlarged view of part B after hot melting.

[0024] Description of labels:

[0025] 1. Front cover; 11. Connecting part; 12. Plug pin;

[0026] 2. Basin frame; 21. Positioning groove; 22. Hot-melt protrusion; 221. Avoidance groove; 222. Inclined side wall; 23. Limiting protrusion; 24. Baffle structure. DETAILED DESCRIPTION

[0027] 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.

[0028] Please refer to Figures 1 to 7 , a sound unit, comprising:

[0029] A front cover 1, wherein the edge of the front cover 1 extends outward to form a connecting portion 11, and the edge of the connecting portion 11 extends outward and bends to form a pin 12;

[0030] The basin frame 2 is provided with a positioning groove 21 and a hot melt protrusion 22, the hot melt protrusion 22 is arranged on the side of the positioning groove 21, the pin 12 is arranged in the positioning groove 21, and the hot melt protrusion 22 is provided with an avoidance groove 221 connected to the positioning groove 21, and the hot melt protrusion 22 covers the notch of the positioning groove 21 and the connecting part 11 after hot melting.

[0031] From the above description, it can be seen that the beneficial effect of the utility model is that when assembling the sound unit provided by the utility model, the pin 12 of the front cover 1 is fixed in the positioning groove 21 of the basin frame 2, and then the hot melt protrusion 22 is hot-melted so that the hot melt protrusion 22 covers the notch and the connecting part 11 of the positioning groove 21 after hot melting. Specifically, after hot melting, the hot melt protrusion 22 will form a baffle structure 24 covering the notch and the connecting part 11 of the positioning groove 21, and the baffle structure 24 can fix the front cover 1. Even if the pin 12 is broken, the front cover 1 will not fall off under the action of the baffle structure 24. Therefore, the sound unit provided by the utility model has a simple structure, is easy and quick to assemble, and has high reliability in falling and vibration.

[0032] Furthermore, the pin 12 is interference fit with the positioning groove 21 .

[0033] It can be seen from the above description that the interference fit between the pin 12 and the positioning groove 21 can achieve a better fixing effect between the front cover 1 and the basin frame 2, and can reduce the risk of the pin 12 breaking after being vibrated or falling.

[0034] Furthermore, the radial cross-sectional area of ​​the pin 12 decreases along the end thereof away from the connecting portion 11 .

[0035] It can be seen from the above description that the pin 12 is easily assembled into the positioning groove 21 .

[0036] Furthermore, the radial cross section of the hot melt projection 22 is an isosceles trapezoid.

[0037] Furthermore, the avoidance groove 221 is provided on one side of the lower bottom of the radial cross section of the hot melt protrusion 22 .

[0038] It can be seen from the above description that the positioning groove 21 can be provided at the corner of the basin frame 2 , and the isosceles trapezoidal hot-melt protrusion 22 can better match the shape of the corner of the basin frame 2 .

[0039] Furthermore, a limiting protrusion 23 is also provided on the basin frame 2 , and the limiting protrusion 23 is arranged on a side of the hot-melt protrusion 22 away from the positioning groove 21 .

[0040] It can be seen from the above description that the limiting protrusion 23 can play a limiting role when the hot melt protrusion 22 is hot-melted. In detail, after the hot melt protrusion 22 is hot-melted, a baffle structure 24 covering the notch of the connecting part 11 and the positioning groove 21 can be formed, and the upper surface of the baffle structure 24 is flush with the upper surface of the limiting protrusion 23.

[0041] Furthermore, an inclined side wall 222 is provided on a side of the limiting protrusion 23 away from the positioning groove 21 .

[0042] It can be seen from the above description that by providing the inclined side wall 222 , it is easier for the molten adhesive of the hot-melt protrusion 22 to cover the connecting portion 11 and the notch of the positioning groove 21 during the hot-melt process.

[0043] Furthermore, the basin frame 2 is a rectangular basin frame 2 , and the positioning grooves 21 are provided at the four corners of the rectangular basin frame 2 .

[0044] It can be seen from the above description that pins 12 are provided at the four corners of the front cover 1 corresponding to the four limiting grooves, so the fixation between the front cover 1 and the basin frame 2 of the sound unit is better.

[0045] Furthermore, the height of the upper surface of the connecting portion 11 is lower than the upper surface of the front cover 1 .

[0046] From the above description, it can be seen that the molten adhesive will not overflow to the upper surface of the front cover 1 during the hot-melt process of the hot-melt protrusion 22 .

[0047] The utility model also provides a loudspeaker, comprising the above-mentioned sound-generating unit.

[0048] It can be seen from the above description that the speaker at least has all the beneficial effects of the above sound-emitting unit.

[0049] Embodiment 1

[0050] Please refer to Figures 1 to 7The first embodiment of the present invention is to provide a sound unit, which can be used in a speaker to make the speaker more reliable in falling. Figure 1 and Figure 2 The sound unit includes a front cover 1 and a basin frame 2, the edge of the front cover 1 extends outward to form a connecting portion 11, the edge of the connecting portion 11 extends outward and bends to form a pin 12, the basin frame 2 is provided with a positioning groove 21 and a hot melt protrusion 22, the hot melt protrusion 22 is arranged on the side of the positioning groove 21, the pin 12 is arranged in the positioning groove 21, and the hot melt protrusion 22 is provided with an avoidance groove 221 connected to the positioning groove 21; wherein, Figure 4 As shown, the hot melt protrusion 22 can cover the notch of the positioning groove 21 and the blocking piece structure 24 on the connecting portion 11 after hot melting.

[0051] Specifically, in this embodiment, the pin 12 is interference-fitted with the positioning groove 21, so that the front cover 1 and the basin frame 2 are better fixed, and the probability of the pin 12 breaking after falling is correspondingly reduced. In order to easily install the pin 12 into the positioning groove 21, the radial cross-sectional area of ​​the pin 12 decreases along the end away from the connecting portion 11.

[0052] In this embodiment, the basin frame 2 is a rectangular basin frame 2, and positioning grooves 21 are provided at the four corners of the rectangular basin frame 2. The front cover 1 is provided with pins 12 that match the positioning grooves 21 one by one. In order to make the hot melt protrusions 22 better match the shape of the corners of the basin frame 2, such as Figure 1 As shown, the radial cross section of the hot melt protrusion 22 is an isosceles trapezoid, and an avoidance through groove 221 is provided on one side of the lower bottom of the radial cross section of the hot melt protrusion 22.

[0053] Reference Figure 1 It is not difficult to see that in this embodiment, the side of the limiting protrusion 23 away from the positioning groove 21 is provided with an inclined side wall 222 inclined toward the side of the positioning groove 21, so as to ensure that the molten glue of the hot-melt protrusion 22 during the hot-melting process can cover the notch of the connecting portion 11 and the positioning groove 21.

[0054] In this embodiment, the basin frame 2 is further provided with a limiting protrusion 23, which is arranged on the side of the hot-melt protrusion 22 away from the positioning groove 21. The limiting protrusion 23 can play a limiting role when the hot-melt protrusion 22 is hot-melted. Figure 4 and Figure 7 As shown, after the hot-melt protrusion 22 is hot-melted, a baffle structure 24 covering the connection portion 11 and the notch of the positioning groove 21 can be formed, and the upper surface of the baffle structure 24 is flush with the upper surface of the limiting protrusion 23 .

[0055] Meanwhile, in order to prevent the molten adhesive of the hot-melt bump 22 from overflowing to the upper surface of the front cover 1 during the hot-melt process, in the present embodiment, the height of the upper surface of the connecting portion 11 is lower than the upper surface of the front cover 1 .

[0056] To sum up, during assembly, the sound unit provided by the utility model fixes the pin 12 of the front cover 1 in the positioning groove 21 of the basin frame 2, and then hot-melts the hot-melt protrusion 22 so that the hot-melt protrusion 22 covers the notch and the connecting portion 11 of the positioning groove 21 after hot-melting. Specifically, after hot-melts the hot-melt protrusion 22, a baffle structure 24 covering the notch and the connecting portion 11 of the positioning groove 21 is formed. The baffle structure 24 can fix the front cover 1. Even if the pin 12 is broken, the front cover 1 will not fall off under the action of the baffle structure 24. Therefore, the sound unit provided by the utility model has a simple structure, is easy and quick to assemble, and has high reliability in falling and vibration.

[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 unit, characterized in that: include: A front cover, wherein the edge of the front cover extends outward to form a connecting portion, and the edge of the connecting portion extends outward and bends to form a pin; A basin frame, wherein a positioning groove and a hot-melt protrusion are provided on the basin frame, wherein the hot-melt protrusion is arranged on the side of the positioning groove, wherein the pin is arranged in the positioning groove, and wherein the hot-melt protrusion is provided with an avoidance groove connected with the positioning groove, wherein the hot-melt protrusion covers the notch of the positioning groove and the connecting portion after hot-melting.

2. The sound generating unit according to claim 1, characterized in that: The pin is interference fit with the positioning groove.

3. The sound generating unit according to claim 1, characterized in that: The radial cross-sectional area of ​​the pin decreases along an end thereof away from the connecting portion.

4. The sound generating unit according to claim 1, characterized in that: The radial cross section of the hot-melt protrusion is an isosceles trapezoid.

5. The sound generating unit according to claim 4, characterized in that: The avoidance groove is provided on one side of the lower bottom of the radial cross section of the hot melt protrusion.

6. The sound generating unit according to claim 1, characterized in that: The basin frame is also provided with a limiting protrusion, and the limiting protrusion is arranged on a side of the hot-melt protrusion away from the positioning groove.

7. The sound generating unit according to claim 6, characterized in that: A side of the limiting protrusion away from the positioning groove is provided with an inclined side wall.

8. The sound generating unit according to claim 1, characterized in that: The basin frame is a rectangular basin frame, and the positioning grooves are arranged at the four corners of the rectangular basin frame.

9. The sound generating unit according to claim 1, characterized in that: The height of the upper surface of the connecting portion is lower than the upper surface of the front cover.

10. A loudspeaker, characterized in that: The invention comprises the sound-emitting unit according to any one of claims 1 to 9.

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