CN214381376U - Sound production device and electronic equipment - Google Patents
Sound production device and electronic equipment Download PDFInfo
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- CN214381376U CN214381376U CN202120648521.3U CN202120648521U CN214381376U CN 214381376 U CN214381376 U CN 214381376U CN 202120648521 U CN202120648521 U CN 202120648521U CN 214381376 U CN214381376 U CN 214381376U
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Abstract
The utility model discloses a sound generating device and electronic equipment, the sound generating device comprises a vibration system, a magnetic circuit system and a positioning component, the vibration system comprises a vibration film, an inner voice coil and an outer voice coil which are arranged on one side of the vibration film, the outer voice coil is sleeved on the periphery of the inner voice coil, a first magnetic gap and a second magnetic gap are formed in the magnetic circuit system, the first magnetic gap and the second magnetic gap are distributed at intervals in turn, the first magnetic gap is used for accommodating the inner voice coil, the second magnetic gap is used for accommodating the outer voice coil, the positioning component comprises a first centering support sheet and a second centering support sheet, the first centering support sheet and the second centering support sheet are separately arranged, the first centering support sheet is connected with the inner voice coil, the second centering support sheet is connected with the outer voice coil, the utility model makes the vibration film vibrate uniformly by a double voice coil structure, reduces the division vibration, reduces the sound generation distortion, the first centering support sheet and the second centering support sheet respectively support the inner voice coil and the outer voice coil, and the components of a whole that can function independently set up, avoid the vibration between inside and outside voice coil loudspeaker voice coil to pass through the centering support piece transmission and mutual interference, influence tone quality.
Description
Technical Field
The utility model relates to an electroacoustic technology field specifically, relates to a sound generating mechanism and electronic equipment.
Background
Traditional speaker generally is single voice coil loudspeaker voice coil structure, and when single voice coil loudspeaker voice coil drive vibrating diaphragm moved, it was higher to vibrating diaphragm rigidity requirement, and vibrating diaphragm rigidity is not enough, appears cutting apart the vibration easily and leads to the distortion.
For this reason, correlation technique provides a two voice coil loudspeaker structure, including two voice coils, two voice coils same phase vibrations act on the different regions of vibrating diaphragm for the vibration of vibrating diaphragm is more even. The segmentation vibration phenomenon is reduced, the distortion is reduced, and the tone quality is improved. However, the structure has a high requirement on the vibration control precision of the two voice coils, and if vibration interference occurs between the two voice coils, the sound production effect may be affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduce mutual vibration interference between the inside and outside voice coil loudspeaker voice coil of two voice coil loudspeaker voice coil structures, promote tone quality's sound generating mechanism and electronic equipment.
In order to achieve the above object, the utility model provides a sound generating device, include:
the vibration system comprises a vibration diaphragm, an inner voice coil and an outer voice coil, wherein the inner voice coil and the outer voice coil are arranged on one side of the vibration diaphragm;
the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap, the first magnetic gap and the second magnetic gap are sequentially distributed at intervals in an inner ring and an outer ring, the first magnetic gap is used for accommodating the inner voice coil, and the second magnetic gap is used for accommodating the outer voice coil; and the number of the first and second groups,
the positioning assembly comprises a first centering support piece and a second centering support piece, the first centering support piece is arranged at an interval with the second centering support piece, the first centering support piece is connected with the inner voice coil, and the second centering support piece is connected with the outer voice coil.
In one embodiment, the magnetic circuit system includes a first magnet structure and a second magnet structure, the first magnet structure forms an annular groove with an opening facing the diaphragm, the second magnet structure is disposed in the annular groove, the first magnetic gap is formed between the second magnet structure and an inner annular side wall of the annular groove, and the second magnetic gap is formed between the second magnet structure and an outer annular side wall of the annular groove.
In an embodiment, the second magnet structure includes magnet and annular china department, magnet one end with the bottom of ring channel links to each other, and the other end sets up the annular china department, first centering branch piece for sound generating mechanism's inboard is connected interior voice coil loudspeaker voice coil, for sound generating mechanism's the outside is fixed in the annular china department, second centering branch piece for sound generating mechanism's the outside is connected outer voice coil loudspeaker voice coil, for sound generating mechanism's inboard is fixed in the annular china department.
In an embodiment, a fixing frame is disposed on a side of the annular washer facing the diaphragm, and the fixing frame is fixedly connected to the first centering branch piece and the second centering branch piece respectively.
In an embodiment, the first magnet structure is formed with the magnetic conduction arch in the middle part, the ring channel ring is located the magnetic conduction is protruding, first centering branch piece for sound generating mechanism's inboard is fixed in the magnetic conduction is protruding, for sound generating mechanism's the outside is connected interior voice coil loudspeaker voice coil, second centering branch piece for sound generating mechanism's inboard is fixed in annular china department, for sound generating mechanism's the outside is connected outer voice coil loudspeaker voice coil.
In an embodiment, the diaphragm is disposed in an annular shape to have an inner ring close to a center and an outer ring far from the center, the inner voice coil is disposed on the inner ring of the diaphragm, and the outer voice coil is disposed on the outer ring of the diaphragm.
In an embodiment, sound generating mechanism still includes the basin frame, the basin frame cover is located the periphery of vibrating diaphragm, and one end connect in first magnet structure periphery, the other end connect in the outer lane of vibrating diaphragm, second magnet structure includes magnet and annular china department, magnet one end with the bottom of ring channel links to each other, and the other end sets up the annular china department, first centering piece for sound generating mechanism's inboard is connected interior voice coil loudspeaker voice coil, for sound generating mechanism's the outside is fixed in annular china department, second centering piece for sound generating mechanism's inboard is connected outer voice coil loudspeaker voice coil, for sound generating mechanism's the outside is fixed in the inner wall of basin frame.
In an embodiment, sound generating mechanism still includes the basin frame, the basin frame cover is located the periphery of vibrating diaphragm, and one end connect in first magnet structure periphery, the other end connect in the outer lane of vibrating diaphragm, first magnet structure is formed with the magnetic conduction at the middle part protruding, the ring channel ring is located the magnetic conduction is protruding, first centering piece for sound generating mechanism's inboard is fixed in the magnetic conduction is protruding, for sound generating mechanism's the outside is connected interior voice coil loudspeaker voice coil, second centering piece for sound generating mechanism's inboard is connected outer voice coil loudspeaker voice coil, for sound generating mechanism's the outside is fixed in the inner wall of basin frame.
In one embodiment, the inner voice coil is arranged in parallel with the outer voice coil.
The utility model also provides an electronic equipment, include above sound generating mechanism.
The utility model provides a sound generating mechanism includes vibration system, magnetic circuit and locating component, and vibration system includes the vibrating diaphragm and locates the interior voice coil loudspeaker voice coil and the outer voice coil loudspeaker voice coil of vibrating diaphragm one side, outer voice coil loudspeaker voice coil cover is located the periphery of interior voice coil loudspeaker voice coil, and with interior voice coil loudspeaker voice coil is the interval setting, be formed with first magnetism clearance and second magnetism clearance among the magnetic circuit, first magnetism clearance with the second magnetism clearance is interior outer lane interval distribution in proper order, first magnetism clearance is used for holding interior voice coil loudspeaker voice coil, the second magnetism clearance is used for holding outer voice coil loudspeaker voice coil, first magnetism clearance with produce magnetic field in the second magnetism clearance, produce the vibrational force with magnetic field interact when interior voice coil loudspeaker voice coil and outer voice coil loudspeaker voice coil receive audio current signal and apply to the vibrating diaphragm, make the vibrating diaphragm vibrate the sound production. The positioning assembly comprises a first centering support piece and a second centering support piece, the first centering support piece is arranged at an interval with the second centering support piece, the first centering support piece is connected with the inner voice coil, and the second centering support piece is connected with the outer voice coil. The utility model provides a sound generating mechanism makes the vibrating diaphragm vibration even through two voice coil loudspeaker voice coil structures, reduces and cuts apart the vibration, reduces the sound production distortion, and first centering piece supports the inside and outside voice coil loudspeaker voice coil respectively with second centering piece, and the components of a whole that can function independently sets up, and the vibration of avoiding between the inside and outside voice coil loudspeaker voice coil passes through the centering piece transmission and mutual interference, influences tone quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic sectional structure view of a first embodiment of a sound generating device provided by the present invention;
fig. 2 is a schematic sectional structure view of a second embodiment of the sound generating device provided by the present invention;
fig. 3 is a schematic sectional structure view of a third embodiment of the sound generating device provided by the present invention;
fig. 4 is a schematic sectional structure view of a fourth embodiment of the sound generating device provided by the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an electronic equipment, electronic equipment include sound generating mechanism 1. The electronic device may be specifically an electronic device with a sound generating function, such as an earphone, a mobile phone, or a sound box, and the electronic device converts an electrical signal into an audio signal through the sound generating device 1.
Referring to fig. 1 to 4, the present invention provides a sound generating device 1, wherein the sound generating device 1 may be a moving-coil speaker. Sound generating mechanism 1 includes sound generating mechanism 1 and includes vibration system, magnetic circuit and locating component, and vibration system includes vibrating diaphragm 10 and locates interior voice coil loudspeaker voice coil 11 and outer voice coil loudspeaker voice coil 12 of vibrating diaphragm 10 one side, outer voice coil loudspeaker voice coil 12 cover is located the periphery of interior voice coil loudspeaker voice coil 11, and with interior voice coil loudspeaker voice coil 11 is the interval setting, be formed with first magnetic gap 31 and second magnetic gap 32 among the magnetic circuit, first magnetic gap 31 with second magnetic gap 32 is interior outer lane 102 interval distribution in proper order, first magnetic gap 31 is used for holding interior voice coil loudspeaker voice coil 11, second magnetic gap 32 is used for holding outer voice coil loudspeaker voice coil 12. The positioning assembly comprises a first centering branch piece 51 and a second centering branch piece 52, the first centering branch piece 51 is arranged at an interval with the second centering branch piece 52, the first centering branch piece 51 is connected with the inner voice coil 11, and the second centering branch piece 52 is connected with the outer voice coil 12.
In this embodiment, the diaphragm 10 is made of a soft material with good compliance, and is used for vibration and sound production. A magnetic field is formed in the first magnetic gap 31 and the second magnetic gap 32, the inner voice coil 11 and the outer voice coil 12 are inserted into the first magnetic gap 31 and the second magnetic gap 32, the inner voice coil 11 and the outer voice coil 12 are respectively and partially accommodated in the first magnetic gap 31 and the second magnetic gap 32 and are located in the magnetic fields in the first magnetic gap 31 and the second magnetic gap 32, and when an audio current signal flows through the magnetic fields, the audio current signal interacts with the magnetic fields to generate a vibration force which is applied to the diaphragm 10, so that the diaphragm 10 vibrates to generate sound. Compare in traditional speaker structure, the utility model provides a sound generating mechanism 1 makes vibrating diaphragm 10 vibration even through two voice coil loudspeaker voice coil structures, reduces and cuts apart the vibration, reduces the sound production distortion. The first centering branch 51 and the second centering branch 52 are used for braking and maintaining the center of the inner voice coil 11, the outer voice coil 12 and the diaphragm 10, so that the voice coils move in corresponding magnetic gaps and do not touch parts such as a magnet structure or a washer in a magnetic circuit system.
If the inner voice coil 11 and the outer voice coil 12 are supported by the same centering support, the vibration between the inner voice coil 11 and the outer voice coil 12 may be transmitted through the centering support, causing interference, resulting in asynchronous vibration of the inner voice coil 11 and the outer voice coil 12, and affecting sound production effect. For this reason, in the present embodiment, the inner voice coil 11 and the outer voice coil 12 are supported and limited by the first centering leg 51 and the second centering leg 52, respectively, and the first centering leg 51 and the second centering leg 52 are disposed at an interval. It is understood that the first stiffener 51 and the second stiffener 52 may be spaced in all directions to avoid contact and mutual transmission of vibration. It will be appreciated that the first spider 51 is connected to the inner voice coil 11 while not in contact with the outer voice coil 12, and the second spider 52 is connected to the outer voice coil 12 while not in contact with the inner voice coil 11. Therefore, the vibration between the inner voice coil 11 and the outer voice coil 12 is prevented from being transmitted through the centering support piece, the vibration interference between the inner voice coil and the outer voice coil is reduced, and the tone quality is improved.
The specific structure of the magnetic circuit system can be varied as long as the magnetic field can be provided in the first magnetic gap 31 and the second magnetic gap 32. In this embodiment, referring to fig. 1 to 4, the magnetic circuit system includes a first magnet structure 20 and a second magnet structure, the first magnet structure 20 is formed with an annular groove 22 having an opening facing the diaphragm 10, the second magnet structure is disposed in the annular groove 22, the first magnetic gap 31 is formed between the second magnet structure and an inner annular sidewall 221 of the annular groove 22, and the second magnetic gap 32 is formed between the second magnet structure and an outer annular sidewall 222 of the annular groove 22. In this embodiment, the second magnet structure is substantially bowl-shaped, and a magnetic conductive protrusion 21 and a ring-shaped groove 22 surrounding the magnetic conductive protrusion 21 are formed in the middle of the second magnet structure, the ring-shaped groove 22 has an opening facing the diaphragm 10 and has an inner ring side wall 221 and an outer ring side wall 222 disposed opposite to each other, and the second magnet structure is disposed in the ring-shaped groove 22. In one embodiment, the second magnet structure may be a permanent magnet arranged in a one-piece ring. In another embodiment, the second magnet structure further includes a magnet 30 and an annular washer 40, one end of the magnet 30 is connected to the bottom of the annular groove 22, the other end of the magnet is provided with the annular washer 40, the magnet 30 may be a permanent magnet arranged in an annular block or a plurality of permanent magnets distributed in an annular shape, the permanent magnet may be made of metal with high hardness, for example, metal such as iron, aluminum, nickel, etc., and the magnetism of the permanent magnet is correspondingly different according to different components. The ring-shaped washer 40 is disposed on the side of the magnet 30 facing the diaphragm 10, so that the magnetic field strength in the first magnetic gap 31 and the second magnetic gap 32 is enhanced and uniformly distributed.
The mode of fixed first centering branch piece 51 and second centering branch piece 52 can be multiple, as long as can firmly support it can, in the first embodiment, please refer to fig. 1, first centering branch piece 51 and second centering branch piece 52 all are fixed in annular china 40, specifically, first centering branch piece 51 for sound generating mechanism's inboard is connected interior voice coil 11, for sound generating mechanism's the outside is fixed in annular china 40, second centering branch piece 52 for sound generating mechanism's the outside is connected outer voice coil 12, for sound generating mechanism's inboard is fixed in annular china 40. In this way, the first centering branch 51 and the second centering branch 52 are supported and fixed by the annular washer 40, and are connected and fixed to the inner voice coil 11 and the outer voice coil 12, respectively. The vibration between the inner voice coil 11 and the outer voice coil 12 is not transmitted to each other through the first centering branch 51 and the second centering branch 52, so that the interference is avoided, and the tone quality is improved. In the present invention, the inner side or the outer side with respect to the sound generating device means the inner side or the outer side with reference to the orientation of the whole sound generating device in the sound generating device.
Preferably, a fixing frame 41 is disposed on a side of the annular washer 40 facing the diaphragm 10, and the fixing frame 41 is fixedly connected to the first centering branch 51 and the second centering branch 52 respectively. The fixing frame 41 may be integrated with the annular washer 40, or may be mounted on the annular washer 40, and the material thereof may be the same as that of the annular washer 40, or may be a light material such as plastic or aluminum. It is understood that the holder 41 should be firmly fixed and have high rigidity to prevent the vibrations of the inner and outer voice coils 11 and 12 from being transmitted to each other through the holder 41. The first centering branch 51 and the second centering branch 52 are effectively fixed by the fixing frame 41, so that the first centering branch 51 and the second centering branch 52 are connected to different positions of the fixing frame 41.
In a second embodiment, please refer to fig. 2, a first centering branch 51 is fixed to the magnetic conduction protrusion 21, and a second centering branch 52 is fixed to the annular washer 40, specifically, the first centering branch 51 is fixed to the magnetic conduction protrusion 21 relative to the inner side of the sound generating device, and is connected to the inner voice coil 11 relative to the outer side of the sound generating device, the second centering branch 52 is fixed to the annular washer 40 relative to the inner side of the sound generating device, and is connected to the outer voice coil 12 relative to the outer side of the sound generating device. Thus, the first centering branch piece 51 is supported and fixed by the magnetic conduction bulge 21 and is connected and fixed to the inner voice coil 11, and the second centering branch piece 52 is supported and fixed by the annular washer 40 and is connected and fixed to the outer voice coil 12. The vibration between the inner voice coil 11 and the outer voice coil 12 is not transmitted to each other through the first centering branch 51 and the second centering branch 52, so that the interference is avoided, and the tone quality is improved.
In an embodiment, referring to fig. 1 to 4, the diaphragm 10 is annularly disposed to have an inner ring 101 close to a center and an outer ring 102 far from the center, the inner voice coil 11 is disposed on the inner ring 101 of the diaphragm 10, and the outer voice coil 12 is disposed on the outer ring 102 of the diaphragm 10. Specifically, in this embodiment, the diaphragm 10 is disposed in a tapered shape gradually expanding from a side close to the magnetic circuit to a side away from the magnetic circuit, a gradually expanding channel is formed in the middle of the diaphragm, the inner ring 101 of the diaphragm 10 is an annular region close to the channel, and includes an inner edge of the diaphragm 10 enclosing the channel and a partial region adjacent to the inner edge, the outer ring 102 of the diaphragm 10 is an annular region close to an outer edge of the diaphragm 10, and the inner ring 101 and the outer ring 102 of the diaphragm 10 are substantially distributed at two ends of the diaphragm 10 in a direction from the side close to the magnetic circuit to the side away from the magnetic circuit. In this embodiment, referring to fig. 1 to 4, the inner voice coil 11 is disposed on an inner ring 101 of the diaphragm 10, and the outer voice coil 12 is disposed on an outer ring 102 of the diaphragm 10, so that the inner voice coil 11 and the outer voice coil 12 respectively act on two end regions of the diaphragm 10, the diaphragm 10 vibrates more uniformly, and a distance between the inner voice coil 11 and the outer voice coil 12 is as large as possible, so that a larger magnet 30 can be arranged, and the overall structure of the sound generating apparatus 1 is more compact.
Preferably, the sound generating device 1 further includes a frame 60, the frame 60 is sleeved on the periphery of the vibrating diaphragm 10, one end of the frame is connected to the periphery of the first magnet structure 20, and the other end of the frame is connected to the outer ring 102 of the vibrating diaphragm 10, so as to surround and close the outer portion of the sound generating device 1, support the vibrating diaphragm 10 and prevent impurities from entering the magnetic circuit system.
On the basis of the previous embodiment, the third embodiment of the present invention is provided, please refer to fig. 3, in this embodiment, the first centering branch 51 is connected to the inner voice coil 11 relative to the inner side of the sound generating device, and is fixed to the annular washer 40 relative to the outer side of the sound generating device, and the second centering branch 52 is connected to the outer voice coil 12 relative to the inner side of the sound generating device, and is fixed to the inner wall of the basin stand 60 relative to the outer side of the sound generating device. So, first centering branch piece 51 is fixed through annular china department 40 to it is spacing to connect internal voice coil loudspeaker voice coil 11, and second centering branch piece 52 is fixed through basin frame 60, and it is spacing to connect external voice coil loudspeaker voice coil 12, and the vibration between internal voice coil loudspeaker voice coil 11 and the external voice coil loudspeaker voice coil 12 can not transmit each other through first centering branch piece 51 and second centering branch piece 52, avoids interfering, promotes tone quality.
Optionally, the utility model discloses still provide the fourth embodiment, please refer to fig. 4, ring channel 22 encircles and locates magnetic conduction arch 21, first centering branch piece 51 for sound generating mechanism's inboard is fixed in magnetic conduction arch 21, for sound generating mechanism's the outside is connected interior voice coil 11, second centering branch piece 52 for sound generating mechanism's inboard is connected outer voice coil 12, for sound generating mechanism's the outside is fixed in the inner wall of basin frame 60. So, first centering branch piece 51 is fixed through magnetic conduction arch 21 to it is spacing to connect internal voice coil loudspeaker voice coil 11, and second centering branch piece 52 is fixed through basin frame 60, and it is spacing to connect external voice coil loudspeaker voice coil 12, and the vibration between internal voice coil loudspeaker voice coil 11 and the external voice coil loudspeaker voice coil 12 can not transmit each other through first centering branch piece 51 and second centering branch piece 52, avoids interfering, promotes tone quality.
On the basis of the above embodiments, those skilled in the art can understand that the terminals of the inner voice coil 11 and the outer voice coil 12 are respectively led out, and the serial connection or the parallel connection can be selected according to the use situation. In this embodiment, the inner voice coil 11 is disposed in parallel with the outer voice coil 12. On the one hand, the overall resistance of the sound generating device is smaller, and on the other hand, after one of the voice coils fails, the other voice coil can also continue to work, so that the service life of the sound generating device 1 is prolonged.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A sound generating device, comprising:
the vibration system comprises a vibration diaphragm, an inner voice coil and an outer voice coil, wherein the inner voice coil and the outer voice coil are arranged on one side of the vibration diaphragm;
the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap, the first magnetic gap and the second magnetic gap are sequentially distributed at intervals in an inner ring and an outer ring, the first magnetic gap is used for accommodating the inner voice coil, and the second magnetic gap is used for accommodating the outer voice coil; and the number of the first and second groups,
the positioning assembly comprises a first centering support piece and a second centering support piece, the first centering support piece is arranged at an interval with the second centering support piece, the first centering support piece is connected with the inner voice coil, and the second centering support piece is connected with the outer voice coil.
2. The sound generating apparatus as claimed in claim 1, wherein the magnetic circuit system includes a first magnet structure and a second magnet structure, the first magnet structure forms an annular groove having an opening facing the diaphragm, the second magnet structure is provided in the annular groove, the first magnetic gap is formed between the second magnet structure and an inner annular side wall of the annular groove, and the second magnetic gap is formed between the second magnet structure and an outer annular side wall of the annular groove.
3. The sound generating device according to claim 2, wherein the second magnet structure comprises a magnet and an annular washer, one end of the magnet is connected with the bottom of the annular groove, the other end of the magnet is provided with the annular washer, the first centering branch piece is connected with the inner voice coil relative to the inner side of the sound generating device, the first centering branch piece is fixed on the annular washer relative to the outer side of the sound generating device, the second centering branch piece is connected with the outer voice coil relative to the outer side of the sound generating device, and the second centering branch piece is fixed on the annular washer relative to the inner side of the sound generating device.
4. The sound generating apparatus as claimed in claim 3, wherein a fixing frame is disposed on a side of the annular washer facing the diaphragm, and the fixing frame is fixedly connected to the first centering branch piece and the second centering branch piece respectively.
5. The sound generating device according to claim 3, wherein the first magnetic structure has a magnetic protrusion formed in a middle portion thereof, the annular groove is annularly disposed on the magnetic protrusion, the first centering branch is fixed to the magnetic protrusion relative to an inner side of the sound generating device, the inner voice coil is connected to an outer side of the sound generating device, the second centering branch is fixed to the annular washer relative to the inner side of the sound generating device, and the outer voice coil is connected to the outer side of the sound generating device.
6. The sound generating apparatus as claimed in claim 2, wherein the diaphragm is disposed in a ring shape to have an inner ring near the center and an outer ring far from the center, the inner voice coil is disposed on the inner ring of the diaphragm, and the outer voice coil is disposed on the outer ring of the diaphragm.
7. The sound generating device according to claim 6, wherein the sound generating device further comprises a frame, the frame is sleeved on the periphery of the vibrating diaphragm, one end of the frame is connected to the periphery of the first magnetic structure, the other end of the frame is connected to the outer ring of the vibrating diaphragm, the second magnetic structure comprises a magnet and an annular washer, one end of the magnet is connected to the bottom of the annular groove, the other end of the magnet is arranged on the annular washer, the first centering support piece is connected to the inner side of the sound generating device, the outer side of the sound generating device is fixed to the annular washer, and the second centering support piece is connected to the inner side of the sound generating device, and fixed to the inner wall of the frame.
8. The sound generating device according to claim 6, wherein the sound generating device further comprises a frame, the frame is sleeved on the periphery of the vibrating diaphragm, one end of the frame is connected to the periphery of the first magnetic structure, the other end of the frame is connected to the outer ring of the vibrating diaphragm, the first magnetic structure is formed with a magnetic conductive protrusion in the middle, the annular groove is annularly arranged on the magnetic conductive protrusion, the first centering support is fixed on the inner side of the sound generating device, the inner voice coil is connected to the outer side of the sound generating device, the second centering support is connected to the outer voice coil to the inner side of the sound generating device, and the outer side of the sound generating device is fixed on the inner wall of the frame.
9. The sound generating apparatus of any one of claims 1 to 8, wherein the inner voice coil is arranged in parallel with the outer voice coil.
10. An electronic device characterized by comprising the sound emission device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120648521.3U CN214381376U (en) | 2021-03-30 | 2021-03-30 | Sound production device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648521.3U CN214381376U (en) | 2021-03-30 | 2021-03-30 | Sound production device and electronic equipment |
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| CN214381376U true CN214381376U (en) | 2021-10-08 |
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| CN202120648521.3U Active CN214381376U (en) | 2021-03-30 | 2021-03-30 | Sound production device and electronic equipment |
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