Multifunctional sound-producing device

Abstract

Provided in the present invention is a multifunctional sound-producing device, comprising a housing having an accommodating cavity and a sound-producing unit accommodated in the accommodating cavity. The sound-producing unit comprises a basket, a vibration system fixed to the basket and a magnetic circuit system for driving the vibration system to vibrate in a first direction to produce sound. The multifunctional sound-producing device further comprises a coil which is fixed to the housing and used for driving the sound-producing unit to vibrate in a second direction, an elastic connector for suspending the sound-producing unit within the housing, and a flexible sealing film which is arranged between the sound-producing unit and the housing. The first direction is perpendicular to the second direction. The housing comprises an upper cover body, a lower cover body opposite the upper cover body, and a side wall connecting the upper cover body and the lower cover body, wherein a sound-producing hole is provided in the side wall. The flexible sealing film comprises an annular main body portion held between the upper cover body and the sound-producing unit and an extension portion extending from the annular main body portion to connect to the sound-producing hole. The present solution uses a vertically-placed sealing film, thereby simplifying forming and assembly procedures for the sealing film, and effectively improving the acoustic performance of the multifunctional sound-producing device.

Description

Multifunctional sound device Technical Field

[0001] The present invention relates to the field of electronic technology equipment, and in particular to a multifunctional sound-generating device. Background Art

[0002] With the development of electronic technology, portable consumer electronic devices are becoming more and more popular, such as smart phones, handheld game consoles, tablet computers, etc. These electronic devices generally interact with users through sound playback and vibration sensing.

[0003] In the prior art, the sound playback and vibration sensing of electronic devices are achieved through speakers and motors respectively. The speakers and motors are independent components. The more components there are, the more difficult it is to assemble the electronic device, and the more internal space is required.

[0004] Therefore, it is necessary to provide a new multifunctional sound-generating device to solve the above-mentioned technical problems. Technical issues

[0005] The object of the present invention is to provide a multifunctional sound-generating device with a speaker unit whose outer dimensions can be made larger and whose acoustic performance is effectively improved. Technical Solutions

[0006] The present invention provides a multifunctional sound-producing device, comprising a shell having a receiving cavity and a sound-producing unit received in the receiving cavity, the sound-producing unit comprising a basin, a vibration system fixed to the basin, and a magnetic circuit system for driving the vibration system to vibrate along a first direction to produce sound, the multifunctional sound-producing device also comprising a coil fixed to the shell and driving the sound-producing unit to vibrate along a second direction, an elastic connecting member for suspending the sound-producing unit in the shell, and a flexible sealing membrane arranged between the sound-producing unit and the shell, the first direction is perpendicular to the second direction, the shell comprises an upper cover body, a lower cover body arranged opposite to the upper cover body, and a side wall connecting the upper cover body and the lower cover body, the side wall being provided with a sound-producing hole, the flexible sealing membrane comprising an annular main body clamped between the upper cover body and the sound-producing unit, and an extension portion extending from the annular main body and connected to the sound-producing hole.

[0007] Preferably, a front cavity is formed between the annular main body of the flexible sealing membrane, the upper cover body and the sound-emitting unit, and the extension portion forms a sound-emitting channel connected to the sound-emitting hole.

[0008] Preferably, the material of the flexible sealing film is silicone or hydrogenated styrene-butadiene block copolymer.

[0009] Preferably, the multifunctional sound-emitting device further includes an upper fixing ring arranged between the annular main body and the upper cover body, and / or a lower fixing ring arranged between the annular main body and the sound-emitting unit, and / or an outer fixing ring arranged between the extension part and the sound-emitting hole.

[0010] Preferably, the magnetic circuit system includes a first main magnet, a second main magnet arranged above the first main magnet, and a secondary magnet forming a magnetic gap with the first main magnet and the second main magnet; the vibration system includes a diaphragm and a voice coil located in the magnetic gap and driving the diaphragm to vibrate and produce sound.

[0011] Preferably, the magnetic circuit system further comprises a magnetic yoke supporting the first main magnetic steel, the second main magnetic steel and the auxiliary magnetic steel, and the magnetic yoke comprises an opening for avoiding the coil.

[0012] Preferably, the multifunctional sound-generating device further comprises a magnet arranged on a side of the coil away from the secondary magnet, and the magnet is fixed to the magnetic yoke.

[0013] Preferably, the multifunctional sound-generating device further includes a circuit board and an auxiliary diaphragm arranged below the circuit board. Beneficial effects

[0014] The multifunctional sound-producing device of the present invention can enlarge the outer dimensions of the speaker unit while maintaining the same finished product dimensions, thereby effectively improving the acoustic performance of the speaker. In addition, when the sound-producing unit vibrates along the second direction as a vibrator, the flexible sealing membrane can deform in the horizontal direction to meet the horizontal vibration function of the sound-producing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0016] FIG1 is a schematic diagram of the three-dimensional structure of a multifunctional sound-generating device provided by an embodiment of the present invention;

[0017] FIG2 is a schematic diagram of the three-dimensional structure of the multifunctional sound-generating device shown in FIG1 with the upper cover removed;

[0018] FIG3 is an exploded view of the multifunctional sound-generating device shown in FIG1 ;

[0019] FIG4 is a cross-sectional view of the multifunctional sound-generating device shown in FIG1 along line AA.

[0020] FIG5 is a cross-sectional view of the multifunctional sound-generating device shown in FIG1 along line BB. Modes for Carrying Out the Invention

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0022] Please refer to Figures 1-5. The present invention provides a multifunctional sound-emitting device 100, which includes a shell 1, a sound-emitting unit 2 accommodated in the shell 1, a flexible sealing membrane 3 sandwiched between the shell 1 and the sound-emitting unit 2, and an elastic connector 4 for suspending the sound-emitting unit 2 on the shell 1. The first direction is defined as X and the second direction is defined as Y. The first direction X is perpendicular to the second direction Y. The sound-emitting unit 2 vibrates along the first direction X to produce sound. The multifunctional sound-emitting device 100 includes a coil 5 for driving the sound-emitting unit 2 to vibrate along the second direction Y and a magnet 6 arranged on one side of the coil 5 and fixed to the sound-emitting unit 2. The multifunctional sound-emitting device 100 also includes a circuit board 7 and an auxiliary diaphragm 8 arranged under the circuit board 7.

[0023] The housing 1 includes an upper cover 11, a lower cover 12 disposed opposite the upper cover 11, and a side wall 13 connecting the upper cover 11 and the lower cover 12. The side wall 13 is provided with a sound-emitting hole 14. The upper cover 11, the lower cover 12, and the side wall 13 form a receiving cavity 10. The housing 1 in this embodiment is a structure assembled in separate parts. In other embodiments, the upper cover 11 and the side wall 13 may be integrally formed, or the lower cover 12 and the side wall 13 may be integrally formed.

[0024] The sound-generating unit 2 includes a basin frame 21 , a vibration system 22 fixed to the basin frame 21 , and a magnetic circuit system 23 that drives the vibration system 22 to vibrate along a first direction X to generate sound.

[0025] The vibration system 22 includes a diaphragm 220, a voice coil 221 that drives the diaphragm 220 to vibrate and produce sound, and a skeleton 222 that supports the diaphragm 220 and the voice coil 221. The diaphragm 220 includes an inner folding ring portion 223, a fixing portion 224 fixed to the inner folding ring portion 223, a dome 225 arranged around the inner folding ring portion 223, and an outer folding ring portion 226 arranged around the dome 225. The skeleton 222 is fixed to the inner folding ring portion 223, the dome 225, and the outer folding ring portion 226 respectively.

[0026] The magnetic circuit system 23 includes a first main magnet 231, a second main magnet 232 arranged above the first main magnet 231, an auxiliary magnet 233 forming a magnetic gap 24 with the first main magnet 231 and the second main magnet 232, a main pole core 234 clamped between the first main magnet 231 and the second main magnet 232, and an auxiliary pole core 235 located above the auxiliary magnet 233, the auxiliary pole core 235 is fixed to the basin frame 21, and the second main magnet 232 is fixed to the fixing part 224.

[0027] The magnetic circuit system 23 also includes a yoke 236 that supports the first main magnet 231, the second main magnet 232, and the auxiliary magnet 233. The yoke 236 has a rectangular opening 2361. The coil 5 is a solenoid. The coil 5 is fixed to the lower cover 12 of the shell 1 and is located in the rectangular opening 2361. The magnet 6 is fixed to the yoke 236.

[0028] The flexible sealing membrane 3 includes an annular main body 31 clamped between the upper cover body 11 and the sound unit 2 and an extension portion 32 extending from the annular main body 31 and connected to the sound hole 14. The extension portion 32 forms a sound channel 33 connected to the sound hole 14. A front cavity 34 is formed between the annular main body 31 of the flexible sealing membrane 3 and the upper cover body 11 and the sound unit 2. The sound unit 2 and the flexible sealing membrane 3 divide the receiving space 10 into the front cavity 34 and the rear cavity 35. The flexible sealing membrane 3 seals the rear cavity 35. The front cavity 34 is connected to the sound channel 33. When the sound unit 2 vibrates along the Y direction as a vibrator, the flexible sealing membrane 3 deforms in the horizontal direction to meet the horizontal vibration function of the sound unit 2.

[0029] The flexible sealing film 3 in this embodiment is made of silicone. In other embodiments, the material of the flexible sealing film 3 may be hydrogenated styrene-butadiene block copolymer or other elastic materials.

[0030] The multifunctional sound-emitting device 100 also includes an upper fixing ring 91 arranged between the annular main body 31 and the upper cover body 11, a lower fixing ring 92 arranged between the annular main body 31 and the sound-emitting unit 2, and an outer fixing ring 93 arranged between the extension part 32 and the sound-emitting hole 14. The upper fixing ring 91, the lower fixing ring 92, and the lower fixing ring 92 can better assemble and fix the flexible sealing membrane 3.

[0031] The multifunctional sound-emitting device in this embodiment includes an upper fixing ring 91, a lower fixing ring 92 and an outer fixing ring 93. In other embodiments, it may only include the upper fixing ring 91 or the lower fixing ring 92 or the outer fixing ring 93, or it may include the upper fixing ring 91 and the lower fixing ring 92 or the upper fixing ring 91 and the outer fixing ring 93 or the lower fixing ring 92 and the outer fixing ring 93.

[0032] Compared with the related art, the present invention provides a multifunctional sound-producing device, comprising a shell having a receiving cavity and a sound-producing unit received in the receiving cavity, the sound-producing unit comprising a basin, a vibration system fixed to the basin, and a magnetic circuit system for driving the vibration system to vibrate along a first direction to produce sound, the multifunctional sound-producing device also comprises a coil fixed to the shell and driving the sound-producing unit to vibrate along a second direction, an elastic connector for suspending the sound-producing unit in the shell, and a flexible sealing membrane arranged between the sound-producing unit and the shell, the first direction is perpendicular to the second direction, the shell comprises an upper cover body, a lower cover body arranged opposite to the upper cover body, and a side wall connecting the upper cover body and the lower cover body, a sound-producing hole is provided on the side wall, the flexible sealing membrane comprises an annular main body clamped between the upper cover body and the sound-producing unit and an extension portion extending from the annular main body to connect to the sound-producing hole, the present invention uses a method of vertically placing the sealing membrane, which simplifies the molding and assembly process of the sealing membrane, and at the same time realizes the dual functions of sound playback and vibration sensing.

[0033] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A multifunctional sound generating device, comprising a housing having a receiving cavity and a sound generating element received in the receiving cavity. The sound generating element includes a chassis, a vibration system fixed to the chassis, and a magnetic circuit system for driving the vibration system to vibrate and generate sound in a first direction. The multifunctional sound generating device further includes a coil fixed to the housing and driving the sound generating element to vibrate in a second direction, an elastic connecting member suspending the sound generating element in the housing, and a flexible sealing film disposed between the sound generating element and the housing. The first direction is perpendicular to the second direction. The housing includes an upper cover body, a lower cover body disposed opposite to the upper cover body, and a side wall connecting the upper cover body and the lower cover body. The side wall is provided with a sound hole, and is characterized in that, The flexible sealing film includes an annular main body portion clamped between the upper cover body and the sounding monomer, and an extension portion extending from the annular main body portion and connecting to the sounding hole.

2. The multifunctional sound generating device according to claim 1, characterized in that, A front cavity is formed between the annular main body portion of the flexible sealing film, the upper cover body, and the sounding monomer, and the extension portion forms a sounding channel communicating with the sounding hole.

3. The multifunctional sound generating device according to claim 2, characterized in that, The material of the flexible sealing film is silicone or hydrogenated styrene-butadiene block copolymer.

4. The multifunctional sound generating device according to claim 3, characterized in that, The multi-functional sounding device further includes an upper fixing ring disposed between the annular main body portion and the upper cover body, and / or a lower fixing ring disposed between the annular main body portion and the sounding monomer, and / or an outer fixing ring disposed between the extension portion and the sounding hole.

5. The multifunctional sound generating device according to claim 1, characterized in that, The magnetic circuit system includes a first main magnet, a second main magnet disposed above the first main magnet, and an auxiliary magnet forming a magnetic gap with the first main magnet and the second main magnet. The vibration system includes a diaphragm and a voice coil located in the magnetic gap to drive the diaphragm to vibrate and generate sound.

6. The multifunctional sound generating device according to claim 5, characterized in that, The magnetic circuit system further includes a magnetic yoke carrying the first main magnet, the second main magnet, and the auxiliary magnet. The magnetic yoke includes an opening for avoiding the coil.

7. The multifunctional sound generating device according to claim 6, characterized in that, The multi-functional sounding device further includes a magnet disposed on the side of the coil away from the auxiliary magnet, and the magnet is fixed to the magnetic yoke.

8. The multifunctional sound generating device according to claim 5, characterized in that, The multi-functional sounding device further includes a circuit board and an auxiliary diaphragm disposed below the circuit board.

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