[ summary of the invention ]
The invention aims to provide a sound production device which improves the waterproof performance.
The technical scheme of the invention is as follows: the utility model provides a sound generating mechanism, including basin frame and rigid coupling in the vibration system of basin frame, vibration system includes vibrating diaphragm and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration, the vibrating diaphragm includes the ball top and is located the sound membrane of ball top periphery, the basin frame includes the concatenation portion that two at least support portions and two adjacent support portion fixed connection formed, the sound membrane including connect in two at least support portions with the first connecting portion of concatenation portion, second connecting portion and being located main part between first connecting portion and the second connecting portion, just first connecting portion are located the outside of main part and second connecting portion.
In an optional embodiment of the invention, the basin stand has an outer surface located outside the basin stand, an inner surface arranged opposite to the outer surface, an outer end surface far away from the main body part, and an inner end surface arranged opposite to the outer end surface, and the first connecting part is connected with the outer surface and the inner end surface of the basin stand and covers the splicing part on the outer surface and the inner end surface of the basin stand.
In an optional embodiment of the invention, the first connecting part comprises a first sub-connecting part connected with the inner end surface of the basin stand, and a second sub-connecting part connected with the outer surface of the basin stand, and the first sub-connecting part is connected between the main body part and the second sub-connecting part.
In an optional embodiment of the invention, the at least two support portions include a first support portion and a second support portion, the first support portion and the second support portion are fixedly connected to form at least one spliced portion, the spliced portion includes a first connecting structure disposed at one end of the first support portion, a second connecting structure disposed at one end of the second support portion, and a gap separating the first connecting structure from the second connecting structure, the first connecting portion further includes a third sub-connecting portion disposed in the gap and connecting the first connecting structure and the second connecting structure, and the third sub-connecting portion further connects the first sub-connecting portion and the second sub-connecting portion.
In an optional embodiment of the invention, the support portion comprises at least one bending section, a first straight section and a second straight section which are connected to two ends of the bending section, the first connecting portion further comprises a fourth sub-connecting portion which is connected with the first sub-connecting portion and is arranged at an interval with the second sub-connecting portion, and the fourth sub-connecting portion is connected with the bending section and is connected with the inner surface of the basin stand.
In an optional embodiment of the invention, the first sub-connecting part, the second sub-connecting part, the third sub-connecting part, the fourth sub-connecting part, the second connecting part and the third connecting part are integrally formed into the module, so that the first sub-connecting part, the second sub-connecting part, the third sub-connecting part and the fourth sub-connecting part are integrally formed on the basin stand.
In an optional embodiment of the invention, the basin stand is provided with an outer surface positioned outside the basin stand, an inner surface arranged opposite to the outer surface, an outer end surface far away from the main body part and an inner end surface arranged opposite to the outer end surface, and the first connecting part is also connected with the inner surface of the basin stand and covers the splicing part on the inner surface of the basin stand.
In an optional embodiment of the invention, the basin stand has an outer surface located outside the basin stand, an inner surface opposite to the outer surface, an outer end surface far away from the main body part, and an inner end surface opposite to the outer end surface, and the first connecting part is connected with the inner surface and the inner end surface of the basin stand and covers the splicing part on the inner surface and the inner end surface of the basin stand.
In an optional embodiment of the invention, the basin stand is provided with an outer surface positioned outside the basin stand, an inner surface arranged opposite to the outer surface, an outer end surface far away from the main body part and an inner end surface arranged opposite to the outer end surface;
the at least two support parts comprise a first support part and a second support part, the first support part and the second support part are fixedly connected to form at least one splicing part, and the splicing part comprises a first connecting structure arranged at one end of the first support part, a second connecting structure arranged at one end of the second support part and a gap for spacing the first connecting structure and the second connecting structure;
the first connecting portion comprises a first sub-connecting portion connected with the inner end face of the basin frame and a third sub-connecting portion arranged in the gap and connected with the first connecting structure and the second connecting structure, and the third sub-connecting portion is further connected with the first sub-connecting portion.
The invention has the beneficial effects that: according to the invention, the first connecting part of the sound film is connected to the connecting position (namely the splicing part) of the basin frame, and the splicing part can be further connected through one part of the sound film, so that the connecting stability and the sealing effect of the splicing part can be increased, and the waterproof performance is improved.
The invention can directly integrate one part of the sound film on the basin frame, thereby realizing the fixed connection with the basin frame. Simultaneously, the first sub-connecting portion of sound membrane can cover the interior terminal surface of concatenation portion place basin frame, and the second sub-connecting portion can cover the surface of concatenation portion place basin frame, and the third sub-connecting portion can be filled in the gap of concatenation portion to can follow the different directions and realize the encirclement to concatenation portion, greatly reduced sound generating mechanism can effectively carry the waterproof performance because of the unstable possibility of leaking of connection structure of basin frame.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, 2 and 3, fig. 1 is a front view of the sound generating device of the present invention, fig. 2 is a cross-sectional view of the sound generating device of fig. 1 taken along the direction P-P, and fig. 3 is an exploded view of the sound generating device of fig. 1. The invention provides a sound generating device 2, and the sound generating device 2 can comprise a magnetic circuit system 10, a vibration system 20 and a support system 30. The support system 30 may serve as a carrier for the vibration system 20 and the magnetic circuit system 10 to support the vibration system 20 and the magnetic circuit system 10. The magnetic circuit system 10 can drive the vibration system 20 to vibrate and generate sound. Wherein, the support system 30 may include a basin stand 300 and a bottom plate 500, the basin stand 300 may carry the magnetic circuit system 10 and the vibration system 20, and the bottom plate 500 may be connected with the magnetic circuit system 10.
Referring to fig. 4 and 5 together, fig. 4 is a perspective view illustrating a vibration system of a sound generating device of the present invention fixed to a frame, fig. 5 is another perspective view illustrating the vibration system of the sound generating device of the present invention fixed to the frame, and the vibration system 20 may include a diaphragm 200, a voice coil 400 for driving the diaphragm 200, and a circuit board 600 electrically connected to the voice coil 400.
The circuit board 600 may include a first flexible circuit board 620 electrically connected to the voice coil 400 and a second flexible circuit board 640 for connection to an external circuit. The voice coil 400 is electrically connected to the first flexible circuit board 620, which means that the voice coil 400 is electrically connected to the first flexible circuit board 620, so that data transmission can be realized. It is to be understood that the electrical connection of the two components can be understood as an electrical connection, such as a fixed connection by means of signal lines, which can enable the transmission of data.
The voice coil 400 has a voice coil body 460 and a first lead 420 and a second lead 440 connected to the voice coil body 460, and the first lead 420 and the second lead 440 are electrically connected to the first flexible circuit board 620. The first lead 420 may be fixedly connected to the first flexible circuit board 620 through one pad, and the second lead 440 may be fixedly connected to the first flexible circuit board 620 through another pad, so as to electrically connect the voice coil 400 and the first flexible circuit board 420.
Referring to fig. 6, fig. 6 is a perspective view of the sound generating device of the present invention, in which the diaphragm 200 includes a dome 280, a sound membrane 240 located at the periphery of the dome 280, and a frame 260 supporting the dome 280 and the sound membrane 240. The frame 260 is provided with a through hole 264 and a frame body 262 surrounding the through hole 264, and the dome 280 may be disposed on an outer surface of the frame 260 to cover the through hole 264. The outer edge of the dome 280 and the inner edge of the sound membrane 240 are fixed to the frame body 262, respectively, and the outer edge of the sound membrane 240 is fixed to the frame 300.
In some embodiments of the present invention, the vibration system 20 may further include an auxiliary sound film 800, and the auxiliary sound film 800 may include a first auxiliary sound film 820 and a second auxiliary sound film 840. The first auxiliary sound film 820 and the first flexible circuit board 620 are disposed on the frame 300, and the second auxiliary sound film 840 and the second flexible circuit board 640 are disposed together on the frame 300. The first flexible circuit board 620 and the second flexible circuit board 640 may be disposed on the same plane of the frame 300 and at opposite ends of the frame 300.
It should be noted that the basin stand 300 can also be fixedly connected with the magnetic circuit system 10, so that the magnetic circuit system 10 and the vibration system 20 can be fixedly connected through the basin stand 300.
Referring to fig. 7, fig. 7 is a schematic view illustrating a fixed connection between a sound membrane and a frame in a sound generating device according to the present invention, in which the frame 300 includes at least two frame portions 300A and a splicing portion 300B formed by fixedly connecting two adjacent frame portions 300A, the sound membrane 240 includes a first connecting portion 241 connected to the at least two frame portions 300A and the splicing portion 300B, a second connecting portion 243 connected to the frame 260, and a main body portion 242 located between the first connecting portion 241 and the second connecting portion 243, and the first connecting portion 241 is located outside the main body portion 242 and the second connecting portion 243.
A part of the first connecting portion 241 of the sound film 240 is connected to a connecting position (i.e., the splicing portion 300B) of the frame 300, or it is understood that the first connecting portion 241 of the sound film 240 can be disposed to the at least two support portions 300A and the splicing portion 300B formed by fixedly connecting the adjacent two support portions 300A, so as to achieve the fixing connection and sealing effect on the at least two support portions 300A and the splicing portion 300B. According to the invention, the splicing part 300B can be further connected through one part of the sound film 240, so that the connection stability and the sealing effect of the splicing part 300B can be improved, and the waterproof performance is improved.
Referring to fig. 8 and 9 together, fig. 8 is a partial enlarged view of a shown in fig. 7 a, fig. 9 is a partial enlarged view of B shown in fig. 7, two support portions 300A of the basin stand 300 may be provided, the two support portions 300A are fixedly connected to each other to form two splicing portions 300B, and the first connecting portion 241 may be fixedly connected to the two support portions 300A and the two splicing portions 300B.
It should be understood that the number of the bracket parts 300A of the present invention is not limited to two, and the number of the bracket parts 300A may be three or more. When the number of the bracket parts 300A is three, the three bracket parts 300A may be sequentially and fixedly connected to form three splicing parts 300B. That is, the number of the splice parts 300B is the same as the number of the support parts 300A. The first connecting portion 241 can be fixedly connected with all the bracket portions 300A and all the splicing portions 300B.
It should also be understood that the present invention also contemplates that there may be one bracket portion 300A, with a splice portion 300B formed at each end of one bracket portion 300A. The first connecting portion 241 can be fixedly connected with a bracket portion 300A and a splicing portion 300B.
The bracket 300 is described as including two bracket portions 300A and two splicing portions 300B.
Referring to fig. 10 together, fig. 10 is a perspective view of the frame of the sound generating device of the present invention, the frame 300 may have an outer surface 325 located outside the frame 300, an inner surface 326 disposed opposite to the outer surface, an outer end surface 327 connected between the inner surface 326 and the outer surface 325, and an inner end surface 328. Wherein the outer end surface 327 and the inner end surface 328 are oppositely arranged, and the inner end surface 328 is far away from the magnetic circuit system 10 and can be fixedly connected with the sound film 240.
The bracket 300 may include two bracket portions 300A and two splices 300B. The two leg portions 300A are fixedly connected to each other, such as by welding, to form two splices 300B. The two bracket portions 300A are fixedly connected to form a splicing portion 300B, which can surround to form a receiving space 300C. Wherein a portion of the voice coil 400 may be fitted into the receiving space 300C.
The two bracket portions 300A include a first bracket portion 321 and a second bracket portion 322, and the first bracket portion 321 and the second bracket portion 322 are fixedly connected to form two splicing portions 300B. The two splices 300B include a first splice 323 and a second splice 324.
Referring to fig. 11, fig. 11 is a partial enlarged view of fig. 10C, the first splicing portion 323 includes a first connecting structure 3231 fixedly connected to an end of the first bracket portion 321 and a second connecting structure 3233 fixedly connected to an end of the second bracket portion 322, and the first connecting structure 3231 and the second connecting structure 3233 may be fixedly connected together by welding, such as laser welding. A splice weld may exist after the first connecting structure 3231 and the second connecting structure 3233 are fixedly connected. Such as the first slit 3232 between the first connection structure 3231 and the second connection structure 3233, in order to prevent the sound generating apparatus 2 from leaking water, the first slit 3232 may be closed or sealed to improve the waterproof performance of the sound generating apparatus 2.
The second splicing portion 324 includes a third connecting structure 3241 fixedly connected to the other end of the first frame portion 321 and a fourth connecting structure 3243 fixedly connected to the other end of the second frame portion 322, and the third connecting structure 3241 and the fourth connecting structure 3243 can be fixedly connected together by welding, such as laser welding. A splice weld may exist after the third connecting structure 3241 and the fourth connecting structure 3243 are fixedly connected. Such as the third connecting structure 3241 and the fourth connecting structure 3243 having the second gap 3242 therebetween, in order to prevent the sound generating apparatus 2 from leaking water, the present invention may perform a sealing operation on the second gap 3242 to improve the waterproof performance of the sound generating apparatus 2.
The first frame portion 321 may be formed by bending a metal strip one or more times, such as two times. The first support 321 has at least one straight section and at least one bent section, such as the first support 321 has a first straight section 3211, a first bent section 3214, a second straight section 3212, a second bent section 3215 and a third straight section 3213 connected in sequence, the first straight section 3211 and the second straight section 3212 are bent by the first bent section 3214, such as perpendicular to each other, and the second straight section 3212 and the third straight section 3213 are bent by the second bent section 3215, such as perpendicular to each other. The first and third straight segments 3211, 3213 are oppositely disposed, such as disposed parallel to one another. Some embodiments of the present invention provide that the first and third straight segments 3211, 3213 are symmetrically disposed relative to the second straight segment 3212.
The first connection structure 3231 may be fixedly connected to the first straight section 3211, and the third connection structure 3241 may be fixedly connected to the third straight section 3213.
The second leg portion 322 may be bent one or more times, such as two-shot, using a metal strip. Second support section 322 has at least one straight section and at least one bent section, such as second support section 322 having a fourth straight section 3221, a third bent section 3224, a fifth straight section 3222, a fourth bent section 3225, and a sixth straight section 3223 connected in series. Fourth straight segment 3221 and fifth straight segment 3222 are disposed at a bend, such as perpendicular to each other, via third bend segment 3224, and fifth straight segment 3222 and sixth straight segment 3223 are disposed at a bend, such as perpendicular to each other, via fourth bend segment 3225. Fourth and sixth straight segments 3221 and 3223 are oppositely disposed, such as parallel to one another. Fourth and sixth straight segments 3221 and 3223 are symmetrically disposed with respect to fifth straight segment 3222 according to some embodiments of the present invention.
The third connecting structure 3233 can be fixedly connected to the fourth straight section 3211 and the fourth connecting structure 3243 can be fixedly connected to the sixth straight section 3223.
In the actual process of manufacturing the sound diaphragm 240 and the frame 300, the present invention can first bend one or more metal strips, such as steel strips, to form a bent structure, and then weld the bent structure at the splicing position to form the frame 300. The sound membrane 240 may then be molded on the frame 300, so that a portion of the sound membrane 240 may be fixedly connected to the frame 300, and a portion of the sound membrane 240 is ensured to be fixedly connected to the spliced portion 300B formed at the splicing position, and the gap (the first gap 3232 and the second gap 3242) of the spliced portion 300B may be sealed or/and closed, so as to improve the waterproof performance of the sound generating apparatus 2 at the position of the frame 300.
The fixed connection of the sound membrane 240 and the frame 300 to improve the waterproof performance of the sound generating device 2 at the position of the frame 300 will be described in detail below with reference to the structure of the sound membrane 240.
Referring to fig. 12 and 13 together, fig. 12 is a perspective view of a sound membrane in the sound generating device of the present invention, and fig. 13 is a partial enlarged view of D shown in fig. 12. The sound film 240 may include a first connecting portion 241 connected to the at least two frame portions 300A and the at least two splicing portions 300B, a second connecting portion 243 connected to the skeleton body 262, and a main body portion 242 located between the first connecting portion 241 and the second connecting portion 243, wherein the first connecting portion 241, the main body portion 242, and the second connecting portion 243 are connected in sequence and may be integrally formed. The first connecting portion 241 is located outside the body portion 242 and the second connecting portion 243.
In an alternative embodiment of the present invention, the first connecting portion 241 can be connected to the outer surface 325 and the inner end surface 328 of the frame 300 and cover the splicing portion 300B (the first splicing portion 323 and the second splicing portion 324) on the outer surface 325 and the inner end surface 328 of the frame 300. The first connection part 241 may include a first sub-connection part 2411 connected with the inner end surface 328 of the tub 300, and a second sub-connection part 2412 connected with the outer surface 325 of the tub 300, the first sub-connection part 2411 being connected between the main body part 242 and the second sub-connection part 2412.
In an alternative embodiment of the present invention, the first connecting portion 241 can also seal the first gap 3232 and the second gap 3242. The first connection portion 241 may further include two third sub-connection portions 2413 disposed in the first and second slits 3232 and 3242, such as one third sub-connection portion 2413 disposed in one first slit 3232 and connecting the first and second connection structures 3231 and 3233. Another third sub-connection portion 2413 is disposed in the second slit 3242 and connects the third connection structure 3241 and the fourth connection structure 3243. The third sub-connection portion 2413 is further connected to the first sub-connection portion 2411 and the second sub-connection portion 2412, so that the waterproof performance of the sounding device 2 at the position of the basin stand 300 can be further effectively improved.
In an alternative embodiment of the present invention, the first connecting portion 241 may further include a fourth sub-connecting portion 2414 connected to the first sub-connecting portion 2411 and spaced apart from the second sub-connecting portion 2412, and the fourth sub-connecting portion 2414 and the second sub-connecting portion 2412 are spaced apart to form a space 3415 for accommodating a bending section, such as the first bending section 3214, the second bending section 3215, the third bending section 3224, and the fourth bending section 3225. So that the fourth sub-connecting portion 3414 can be connected with the bending sections such as the first bending section 3214, the second bending section 3215, the third bending section 3224 and the fourth bending section 3225 and connected with the inner surface 326 of the frame 300 to increase the stability of the fixed connection between the sound diaphragm 240 and the frame 300, and at the same time, the possibility of deformation of the bending sections of the frame 300 due to stress can be reduced.
The first connecting portion 241, the second connecting portion 243 and the main body portion 242 of the sound membrane 240 surround to form an accommodating space 244 for accommodating the dome 280.
Wherein the outer end face 325 of the basin stand 300 is away from the main body 242.
In an alternative embodiment of the present invention, the first connecting portion 241 can also be connected to the inner surface 326 of the frame 300 and cover the splice 300B at the inner surface 326 of the frame 300.
According to the invention, a part of the sound film 240 can be directly and integrally formed on the basin stand 300, so that the sound film is fixedly connected with the basin stand 300. Meanwhile, the first sub-connection part 2411 of the sound membrane 240 can cover the inner end surface 327 of the basin frame 300 where the splicing part 300B of the basin frame 300 is located, the second sub-connection part 2422 can cover the outer surface 325 of the basin frame 300 where the splicing part 300B is located, the third sub-connection part 2423 can be filled in the gap (the first gap 3232 and the second gap 3242) of the splicing part 300B, so that the splicing part 300B can be surrounded from different directions, the possibility of water leakage of the sound generating device 2 due to the unstable connection structure of the basin frame 300 is greatly reduced, and the waterproof performance can be effectively improved.
The magnetic circuit system 10 may include a pole core 170, a yoke 160, a main magnet 150, a first sub-magnet 110, a second sub-magnet 120, a third sub-magnet 130, and a fourth sub-magnet 140. The yoke 160 is disposed around the outside of the voice coil 400, and the yoke 160 and the voice film 240 are spaced apart from each other, and the yoke 160 has a groove 162 and a yoke body 164 surrounding the groove 162. A portion of voice coil 400 may be disposed within recess 162 and pole piece 170 may be disposed within recess 162. The yoke body 164 may surround the voice coil 400 and the outside of the pole piece 170. The pole piece 170 may be stacked with the main magnet 150, and the pole piece 170 may be disposed inside the voice coil body 460 of the voice coil 400 to increase stability of the voice coil body 460.
The main magnet 150, the first sub magnet 110, the second sub magnet 120, the third sub magnet 130 and the fourth sub magnet 140 are all fixedly arranged on one surface of the magnetic yoke 160, the first sub magnet 110, the second sub magnet 120, the third sub magnet 130 and the fourth sub magnet 140 are arranged around the periphery of the main magnet 150, magnetic gaps are formed between the first sub magnet 110, the second sub magnet 120, the third sub magnet 130 and the fourth sub magnet 140 and the main magnet 150, and a part of the voice coil 400 is inserted into the magnetic gaps.
The bottom plate 500 may cover a side of the main magnet 150, the first sub magnet 110, the second sub magnet 120, the third sub magnet 130, and the fourth sub magnet 140 facing away from the voice coil 400. Pole core 170 is disposed on a side of main magnet 150 away from bottom plate 500.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.