Speaker modules and speakers with drainage function

Abstract

An embodiment of the present invention relates to the field of loudspeakers, and discloses a loudspeaker module and a loudspeaker with a drainage function, wherein the loudspeaker module comprises: a rear shell, a loudspeaker unit, a heating voice coil, a front shell, a soldering pad arranged on the front shell, and a sound outlet hole; the loudspeaker unit is fixed on the rear shell, and the heating voice coil is located in a front cavity surrounded by the loudspeaker unit and the front shell; the sound outlet hole is connected to the front cavity, and the heating voice coil receives power supply through the soldering pad to release heat, and the stored water is evaporated by local heating and discharged from the sound outlet hole, thereby achieving a better drainage effect.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of loudspeakers, and in particular to a loudspeaker module and a loudspeaker with a drainage function. Background Art

[0002] At present, with the rapid development of the field of electronic products, electronic devices have penetrated into daily life, and people have higher demands on various performances of electronic products.

[0003] Electronic products such as mobile phones and smart watches need to have waterproof and drainage functions. Currently, the market mainly uses low-frequency AC power to pass through the speaker coil to discharge the water in the front cavity from the sound outlet through the large-amplitude vibration of the speaker diaphragm. However, using this method, the audio frequency must first be adjusted to a suitable resonant frequency to drain the water, and the speaker diaphragm is used to vibrate up and down. When the speaker diaphragm vibrates toward the inside of the module, it is not conducive to the discharge of water, and it cannot guarantee that the water is emptied. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a speaker module and a speaker with a drainage function, which can effectively drain the water entering the front cavity of the speaker module and achieve a good drainage effect.

[0005] To solve the above technical problems, an embodiment of the present invention provides a speaker module with a drainage function, comprising: a rear shell, a speaker unit, a heating voice coil, a front shell, a soldering pad and a sound outlet hole arranged on the front shell; the speaker unit is fixed on the rear shell, and the heating voice coil is located in a front cavity surrounded by the speaker unit and the front shell; the sound outlet hole is connected to the front cavity, and the heating voice coil receives power through the soldering pad to release heat.

[0006] An embodiment of the present invention further provides a speaker with a drainage function, comprising the speaker module as described above.

[0007] The embodiment of the present invention provides a speaker module including: a rear shell, a speaker unit, a heating voice coil, a front shell, a solder pad and a sound outlet provided on the front shell; the speaker unit is fixed on the rear shell, and the heating voice coil is located in a front cavity surrounded by the speaker unit and the front shell; the sound outlet is connected to the front cavity, and the heating voice coil receives power through the solder pad to release heat. The drainage function in this application is mainly realized by the heating voice coil, which is provided on the upper cover of the front cavity of the speaker, connected to the outside, and heated by the voice coil after power is turned on, and the stored water is evaporated by local heating, and the stored water in the front cavity can be discharged from the sound outlet without the need for the diaphragm to vibrate up and down, thereby achieving a good drainage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0009] Figure 1 is a schematic cross-sectional structure diagram of a speaker module according to an embodiment of the present invention;

[0010] Figure 2 is a schematic diagram of an exploded structure of a speaker module according to an embodiment of the present invention;

[0011] Figure 3 It is a schematic diagram of the front shell (the surface fitting with the heating voice coil) of the speaker module according to the embodiment of the present invention. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0013] The first embodiment of the present invention relates to a speaker module with a drainage function, such as Figure 1 , Figure 2 As shown, the speaker module includes: a rear shell 1, a speaker unit 2, a heating voice coil 3, a front shell 4, a solder pad 5 and a sound outlet 6 arranged on the front shell 4;

[0014] The speaker unit 2 is fixed on the rear shell 1, and the heating voice coil 3 is located in the front cavity surrounded by the speaker unit 2 and the front shell 4; the sound outlet 6 is connected to the front cavity, and the heating voice coil 3 receives power supply through the solder pad 5 to release heat.

[0015] Specifically, the heating voice coil 3 can be formed by winding the copper core wire in a spiral arrangement. The twisted wire itself has an insulating layer to play an insulating role. The heating voice coil 3 in the embodiment of the present invention is circular, and the cross section of the voice coil is approximately rectangular, and the cross-sectional reference size is 0.2mm*0.1mm. However, in actual applications, the shape and specific arrangement and winding method of the heating voice coil 3 can be adjusted. For example, the heating voice coil 3 can also be spirally wound into a rectangle, a polygon, etc. This embodiment does not limit this, as long as there is a certain contact heating area.

[0016] Specifically, the front cavity is surrounded by the speaker unit 2 and the front shell 4, and is a general term for all the spaces between the speaker unit 2 and the front shell 4, indicating all the spaces between the speaker unit 2 and the front shell 4 without structures. In the front shell 4, the front cavity extends outward to form a sound outlet 6. The heating voice coil 3 receives power supply through the solder pad 5 to release heat, and the water stored in the front cavity evaporates due to the heat and is discharged through the sound outlet 6.

[0017] An embodiment of the present invention provides a speaker module with a drainage function. The drainage function is mainly achieved by a heating voice coil. The heating voice coil is laid on the upper cover of the front cavity of the speaker, connected to an external power supply, and heated by passing direct current. The heating voice coil is heated and evaporated by local heating. The water in the front cavity can be discharged from the sound outlet without the need for the diaphragm to vibrate up and down, thereby achieving a good drainage effect.

[0018] Another embodiment of the present invention relates to a speaker module with a drainage function. This embodiment is an improvement on the speaker module in the above embodiment, and the improvement lies in that the structure of the above speaker module is refined. Figure 2 , Figure 3 As shown in , the speaker module in this embodiment has two solder pads 5, and the two solder pads pass through the inner and outer walls of the front shell 4, and one end of the two solder pads located on the inner wall is connected to the heating voice coil 3, and one end of the two solder pads located on the outer wall is connected to the positive and negative poles of the power supply. Specifically, two solder pads 5 are adjacently arranged on the front shell 4, and the two solder pads 5 pass through the front shell 4 as a whole, and contact with the two solder pads 5 can be achieved on the inner and outer sides of the front shell 4. Both ends of the heating voice coil 3 are welded to one end of the two solder pads 5 located on the inner wall of the front shell 4, and one end of the two solder pads 5 located on the outer wall of the front shell 4 is connected to the power supply. Electrical connection and power supply to the heating voice coil 3 are achieved through the two solder pads 5. As shown Figure 3 The pad 5 used in this embodiment can be a square pad, but in actual application, the square pad can be adjusted to a circular pad, an island pad, an elliptical pad, etc. according to the needs, and this application does not limit this. For the way in which the two pads 5 are connected to the power supply, for example, an external power supply can be connected by leading out a wire on the long side of the pad 5, or the two pads 5 can be directly connected to a specific charging component. The specific method can be adjusted according to the actual situation, and this application does not limit this.

[0019] In the embodiment of the present invention, two solder pads are arranged to penetrate the inner and outer walls of the front shell, and one end of the solder pad on the inner wall is connected to the heating voice coil, and one end of the solder pad on the outer wall is connected to the power supply, thereby realizing powering the heating voice coil using an external power supply.

[0020] Another embodiment of the present invention relates to a speaker module with a drainage function. This embodiment is an improvement on the above embodiment, in that a groove structure for accommodating the speaker unit 2 and the heating voice coil 3 is added to the front shell 4 .

[0021] like Figure 1 , Figure 3 As shown, a first groove 7 is provided at the inner bottom of the front shell 4. When the rear shell 1 is buckled with the front shell 4, part of the structure of the speaker unit 2 extends into the first groove 7, and a gap is left between the speaker unit 2 and the heating voice coil 3 located in the first groove 7, and the sound outlet hole 6 is connected to the gap.

[0022] Specifically, the speaker unit 2 needs to be accommodated between the front shell 4 and the rear shell 1 of the speaker module in this embodiment. The speaker unit 2 is fitted on the inner wall of the rear shell 1 and fixedly connected to the rear shell 1. The connection method can be snap-fit ​​or adhesive connection, and there is no gap between the speaker unit 2 and the rear shell 1 after the fixed connection. A first groove 7 is provided at the inner bottom of the front shell 4. When the rear shell 1 and the front shell 4 are buckled, part of the structure of the speaker unit 2 extends into the first groove 7, and a gap is left between the speaker unit 2 and the heating voice coil 3 located in the first groove 7. When the speaker module is placed at a specific angle, the stored water evaporates due to heat in the gap and is discharged through the sound outlet 6 connected to the gap.

[0023] In an example, Figure 2 , Figure 3 As shown, the inner bottom of the first groove 7 is provided with a second groove 8 whose opening area is smaller than the bottom area of ​​the first groove 7;

[0024] The heating voice coil 3 is disposed in the second groove 8 , and the solder pad 5 passes through the inner and outer side walls of the second groove 8 .

[0025] Specifically, in this embodiment, the heating voice coil 3 needs to be accommodated between the front shell 4 and the rear shell 1 of the speaker module. In order to achieve stable arrangement of the heating voice coil 3, a second groove 8 with an opening area smaller than the bottom area of ​​the first groove 7 can be provided at the inner bottom of the first groove 7 on the basis of the first groove 7 provided at the inner bottom of the front shell 4 to accommodate the heating voice coil 3. That is, the second groove 8 is provided on the basis of the first groove 7, and the second groove 8 is located in the first groove 7, and its bottom area is smaller than the bottom area of ​​the first groove 7, that is, it is part of the structure of the first groove 7. The soldering pad 5 runs through the inner and outer side walls of the second groove 8 located on the front shell 4, and the heating voice coil 3 is accommodated in the second groove 8 and is connected to the soldering pad 5 by welding.

[0026] In the embodiment of the present invention, a first groove is provided in the front shell, and a second groove is further provided in the first groove to accommodate the speaker unit and the heat-generating voice coil, thereby achieving a stable arrangement of the two structures.

[0027] Another embodiment of the present invention relates to a speaker module with a drainage function. This embodiment is an improvement on the above embodiment, and the improvement lies in that a heat conducting sheet structure is added.

[0028] like Figure 2 As shown, the aforementioned speaker module further includes: a heat conductive sheet 9 which is located between the speaker unit 2 and the heating voice coil 3 and has a gap between the speaker unit 2 and the heating voice coil.

[0029] Specifically, a heat conductive sheet 9 is also provided between the speaker unit 2 and the heating voice coil 3. The heat conductive sheet 9 is fitted with the heating voice coil 3, and a gap is left between the speaker unit 2. In this embodiment, the heat conductive sheet is made of metal with a thickness of 0.1 mm, and stainless steel is the best material. It is fitted with the heating voice coil 3 to play the role of waterproof, anti-corrosion and uniform heat conduction. However, in practical applications, the metal heat conductive sheet 9 in this embodiment can also be replaced by materials such as PVC, PET, ABS, etc., as long as the replacement material has packaging, waterproof and anti-corrosion effects. This application does not limit the specific material of the heat conductive sheet 9, and the thickness of the heat conductive sheet 9 can also be adjusted according to the material of the heat conductive sheet. In the aforementioned embodiment, a first groove 7 is provided on the inner bottom of the front shell 4, and a second groove 8 is provided on the inner bottom of the first groove 7. By providing a heat conductive sheet 9 with different relative position relationships with the first groove 7 and the second groove 8, the heating voice coil 3 is sealed in the second groove 8 to protect the heating voice coil 3.

[0030] In an example, Figure 1 , Figure 2 As shown, the side of the heat conducting sheet 9 facing the speaker unit 2 is sunken into the second groove 8 or flush with the opening surface of the second groove 8 , and the edges around the heat conducting sheet 9 are sealed against the inner wall of the second groove 8 .

[0031] Specifically, a heat conductive sheet 9 is disposed between the speaker unit 2 and the heating voice coil 3, with a gap between the speaker unit 2 and the heating voice coil 3. The shape of the heat conductive sheet 9 matches the inner wall contour of the second groove 8, and the area of ​​the heat conductive sheet 9 is equal to or slightly smaller than the opening area of ​​the second groove 8. When the area of ​​the heat conductive sheet 9 is slightly smaller than the opening area of ​​the second groove 8, the side of the heat conductive sheet 9 facing the speaker unit 2 is sunken into the second groove 8 to fit the heating voice coil 3, and the heat conductive sheet 9 and the heating voice coil 3 are also bonded with glue; when the area of ​​the heat conductive sheet 9 is equal to the opening area of ​​the second groove 8, the glue fills the second groove 8 where the heating voice coil 3 is located, so that when the heat conductive sheet 9 is placed in the second groove, the side of the heat conductive sheet 9 facing the speaker unit 2 is flush with the opening surface of the second groove 8, and the edges of the heat conductive sheet 9 are sealed and fit with the inner wall of the second groove 8. That is, the plane where the side of the heat conducting sheet 9 facing the speaker unit 2 is located coincides with the plane where the second groove 8 is located, and the second groove 8 can be filled up.

[0032] In another example, Figure 1 , Figure 2 As shown, the side of the heat conducting sheet 9 facing away from the speaker unit 2 is in contact with the opening surface of the second groove 8 , and the edges around the heat conducting sheet 9 are in sealing contact with the inner side wall of the first groove 7 .

[0033] Specifically, a heat conductive sheet 9 is provided in contact with the heating voice coil 3, and the side of the heat conductive sheet 9 facing away from the speaker unit 2 is in contact with the opening surface of the second groove 8. All gaps between the side of the heat conductive sheet 9 facing away from the speaker unit 2 and the bottom of the second groove 8 are filled with glue, which can be moisture-curing silicone, or UV light-curing glue, etc., and this application does not impose any restrictions on this. After the filling is completed, the plane where the side of the heat conductive sheet 9 facing away from the speaker unit 2 is located coincides with the plane where the second groove 8 is located, and the edges around the heat conductive sheet 9 are sealed and in contact with the inner side wall of the first groove 7, which is equivalent to the heat conductive sheet 9 covering the opening surface of the second groove 8.

[0034] In one example, the sound outlet hole 6 is communicated with the gap between the speaker unit 2 and the heat conducting sheet 9 .

[0035] Specifically, the sound outlet 6 is located on the front shell 4 and connected to the outside. There is a gap between the speaker unit 2 and the heat conductive sheet 9. When water enters the speaker, the water only exists in the gap between the speaker unit 2 and the heat conductive sheet 9 due to the blocking of the speaker unit 2, the heat conductive sheet 9 and the glue filled in the second groove 8. The product is placed at a special angle so that the water between the gap between the speaker unit 2 and the heat conductive sheet 9 flows to the heat conductive sheet 9 area due to gravity. After the heating voice coil 3 is powered on, it heats up and the water evaporates slowly through the heat conductive sheet 9. The evaporated water vapor is discharged through the sound outlet 6 connected to the gap between the speaker unit 2 and the heat conductive sheet 9.

[0036] In addition, the heating voice coil 3 in the above embodiment can also have NFC (Near Field Communication) near field transmission function and wireless charging function, so as to be suitable for communication and charging function scenarios. The embodiment of the present invention can provide a heat conductive sheet that is arranged in close contact with the heating voice coil 3, so as to make the heating voice coil waterproof and anti-corrosion, and evenly conduct heat to the heat generated by the heating voice coil, so that when the water in the front cavity contacts the heat conductive sheet, the heat generated by the heating voice coil when it is powered on can evaporate on the heat conductive sheet.

[0037] Furthermore, by setting a first groove in the front shell and a second groove in the first groove, the heat conductive sheet and the heating voice coil are accommodated in the second groove, so that the plane where the side of the heat conductive sheet facing the speaker unit is located coincides with the plane where the second groove is located, which makes it easier for the stored water to evaporate under heat and be discharged from the sound outlet. At the same time, the glue filling and the setting of the heat conductive sheet can be waterproof and anti-corrosion, thereby achieving the effect of protecting the heating voice coil.

[0038] The solution of the groove filling glue plus the metal heat conductive sheet in this embodiment can also be replaced by graphene, and graphene can be used to increase the heat dissipation effect of the voice coil. After the voice coil is powered on and heated, the temperature begins to rise slowly. By adjusting the voltage value of the input electrical signal, the local target temperature of the voice coil is controlled to be maintained at 60 to 70 degrees Celsius, so that the water stored in the front cavity evaporates without damaging other parts of the speaker module, achieving a good drainage effect.

[0039] In another embodiment, a speaker is provided, including: the speaker module as described in any of the above embodiments.

[0040] The speaker modules and related structural features described in the above embodiments are all applicable to the speaker of this embodiment and will not be described in detail here.

[0041] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A speaker module with drainage function, characterized in that: include: A rear shell, a speaker unit, a heating voice coil, a front shell, a solder pad and a sound outlet hole arranged on the front shell; The speaker unit is fixed on the rear shell, and the heating voice coil is located in the front cavity surrounded by the speaker unit and the front shell; the sound outlet is connected to the front cavity, and the heating voice coil receives power supply through the solder pad to release heat; There are two solder pads, which penetrate the inner and outer walls of the front shell, and one end of the two solder pads located on the inner wall is connected to the heating voice coil, and one end of the two solder pads located on the outer wall is connected to the positive and negative electrodes of the power supply; A first groove is provided at the inner bottom of the front shell. When the rear shell is buckled with the front shell, part of the structure of the speaker unit extends into the first groove, and a gap is left between the speaker unit and the heating voice coil located in the first groove, and the sound outlet hole is connected to the gap. A second groove having an opening area smaller than the bottom area of ​​the first groove is provided at the inner bottom of the first groove; the heating voice coil is provided in the second groove, and the soldering pad passes through the inner and outer side walls of the second groove; The speaker module further includes: a heat conducting sheet located between the speaker unit and the heating voice coil, with a gap between the speaker unit and the heat conducting sheet, and arranged in close contact with the heating voice coil; The sound outlet hole is connected to the gap between the speaker unit and the heat conducting sheet; The side of the heat conductive sheet facing the speaker unit is sunken into the second groove or flush with the opening surface of the second groove, and the four edges of the heat conductive sheet are sealed to the inner wall of the second groove; or, the side of the heat conductive sheet facing away from the speaker unit is fitted with the opening surface of the second groove, and the four edges of the heat conductive sheet are sealed to the inner wall of the first groove.

2. The speaker module according to claim 1, characterized in that: The heating voice coil also has NFC near-field transmission function and wireless charging function.

3. A speaker, characterized in that: include: The loudspeaker module according to any one of claims 1 to 2.

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