CN213462304U

CN213462304U - Loudspeaker

Info

Publication number: CN213462304U
Application number: CN202021308691.9U
Authority: CN
Inventors: 严绪东; 邵涛; 顾小江
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-06-15
Anticipated expiration: 2030-07-06
Also published as: WO2022006966A1

Abstract

The utility model discloses a loudspeaker, including basin frame, magnetic circuit, vibration system and pad limit subassembly, magnetic circuit installs in the basin frame, and vibration system includes with basin frame fixed connection's sound membrane subassembly, locate the inside voice coil loudspeaker voice coil that can move of magnetic circuit relatively and with voice coil loudspeaker voice coil fixed connection's skeleton, pad limit subassembly and skeleton centre gripping sound membrane subassembly. The utility model discloses a loudspeaker fills up the limit subassembly through setting up, has strengthened the joint strength between sound membrane subassembly and the skeleton, has avoided the sound membrane subassembly easy and the problem of skeleton separation when the amplitude is great, promotes the reliability of loudspeaker, has also prolonged the life of loudspeaker simultaneously.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion technology field especially relates to a loudspeaker.

[ background of the invention ]

The speaker is an important sound producing component of the portable electronic device, is used for completing the conversion between an electric signal and a sound signal, and is an energy conversion device. The loudspeaker usually includes vibration system and magnetic circuit, and vibration system includes voice coil loudspeaker voice coil, vibrating diaphragm and skeleton usually, and the voice coil loudspeaker voice coil can the up-and-down motion under magnetic circuit's effect to drive vibrating diaphragm and skeleton and move together, thereby produce sound, but current loudspeaker when vibration range is great, the vibrating diaphragm is easy to be separated with the skeleton, influences product reliability.

Therefore, there is a need to provide an improved speaker to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a loudspeaker to solve the problem that current loudspeaker vibrating diaphragm and skeleton separated easily when vibration range is great.

The purpose of the utility model is realized by adopting the following technical scheme:

a loudspeaker, comprising:

a basin stand;

the magnetic circuit system is arranged on the basin frame;

the vibration system comprises a sound membrane component fixedly connected with the basin frame, a voice coil arranged in the magnetic circuit system and capable of moving relative to the magnetic circuit system, and a framework fixedly connected with the voice coil; and the number of the first and second groups,

and the cushion edge assembly and the framework clamp the sound film assembly.

As an improvement, the sound film assembly includes a first sound film annularly arranged outside the magnetic circuit system and a second sound film annularly arranged outside the first sound film and spaced from the first sound film, one side of the first sound film away from the magnetic circuit system and one side of the second sound film close to the magnetic circuit system are both fixedly connected with the frame, one side of the first sound film close to the magnetic circuit system and one side of the second sound film away from the magnetic circuit system are both fixedly connected with the basin frame, the pad edge assembly includes a first pad edge and a second pad edge, the first pad edge and the frame clamp the first sound film, and the second pad edge and the frame clamp the second sound film.

As an improvement, the bobbin includes a fixing portion fixedly connected with the voice coil, a supporting portion annularly arranged outside the fixing portion and spaced from the fixing portion, and a connecting rib connecting the fixing portion with the supporting portion, wherein the supporting portion is connected with the first voice diaphragm and the second voice diaphragm.

As an improvement, the first sound film includes a first edge portion disposed around the magnetic circuit system, a second edge portion disposed around the first edge portion and spaced apart from the first edge portion, and a first hinge portion connecting the first edge portion and the second edge portion, the first edge portion is fixedly connected to the frame, and the second edge portion is interposed between the support portion and the first rim.

As an improvement, a first accommodating groove for accommodating the second edge portion is formed in one side of the supporting portion close to the magnetic circuit system.

As an improvement, the second sound film includes a third edge portion annularly disposed outside the first sound film, a fourth edge portion annularly disposed outside the third edge portion and spaced from the third edge portion, and a second flange portion connected between the third edge portion and the fourth edge portion, the third edge portion is clamped between the second pad edge and the support portion, and the third edge portion is fixedly connected to the frame.

As an improvement, a second accommodating groove for accommodating the third edge portion is formed in a side of the supporting portion away from the magnetic circuit system.

As an improvement, the first pad edge and the second pad edge are both circular rings, and the first pad edge and the second pad edge are coaxial.

As an improvement, the basin stand comprises a bottom plate, a side plate and a surrounding wall, wherein the side plate is arranged at the edge of the bottom plate in a surrounding mode, the surrounding wall is arranged in the middle of the bottom plate in a protruding mode, the magnetic circuit system is fixedly installed on the surrounding wall, one side, close to the magnetic circuit system, of the first sound film is connected with the surrounding wall, and one side, far away from the magnetic circuit system, of the second sound film is connected with the side plate.

As an improvement, the magnetic circuit system comprises a magnetic bowl arranged on the frame and a magnetic part accommodated in the magnetic bowl and forming a magnetic gap with the magnetic bowl, and the voice coil is annularly arranged outside the magnetic part and suspended in the magnetic gap through the framework.

The utility model discloses embodiment fills up the limit subassembly through setting up for prior art, and fills up limit subassembly and skeleton centre gripping sound membrane subassembly to having strengthened skeleton and sound membrane subassembly's joint strength, having avoided the sound membrane subassembly easy and the problem of skeleton separation when the amplitude is great, having promoted the reliability of speaker, also prolonged the life of speaker simultaneously.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a speaker according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an exploded schematic view of the loudspeaker shown in FIG. 1;

FIG. 4 is a schematic structural diagram of the voice diaphragm assembly shown in FIG. 3;

FIG. 5 is a schematic structural view of the skeleton shown in FIG. 3;

FIG. 6 is a schematic view of the assembly of the frame and the magnetic bowl shown in FIG. 3;

FIG. 7 is a schematic structural view of the basin stand shown in FIG. 3;

fig. 8 is a schematic structural view of the magnetic bowl shown in fig. 3.

Reference numerals: 100. a speaker; 10. a basin stand; 20. a vibration system; 30. a magnetic circuit system; 40. a backing edge assembly; 50. a circuit board; 21. a diaphragm assembly; 22. a voice coil; 23. a framework; 211. a first diaphragm; 212. a second sound film; 213. a first edge portion; 214. a second edge portion; 215. a first hinge part; 216. a third edge portion; 217. a fourth edge portion; 218. a second fold ring; 41. a first rim; 42. a second cushion edge; 231. a fixed part; 232. a support portion; 233. connecting ribs; 234. a first accommodating groove; 235. a second accommodating groove; 11. a base plate; 12. a side plate; 13. a surrounding wall; 131. mounting holes; 132. a port; 301. an avoidance groove; 14. a fixed block; 141. a fixing hole; 31. a magnetic bowl; 302. a magnetic gap; 32. a magnetic member; 33. a first bowl body; 34. a second bowl body; 331. a first bottom wall; 332. a first side wall; 333. a first mounting block; 334. a first connection hole; 341. a second bottom wall; 342. a second side wall; 343. a second mounting block; 344. a second connection hole; 133. a first mounting groove; 134. a second mounting groove; 321. a first magnetic steel; 322. a pole piece; 323. and a second magnetic steel.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1-8, an embodiment of the present invention provides a speaker 100, which includes a frame 10, a vibration system 20, a magnetic circuit system 30, a rim assembly 40, and a circuit board 50, wherein the vibration system 20 and the magnetic circuit system 30 are both installed on the frame 10, the magnetic circuit system 30 is used for driving the vibration system 20 to vibrate and generate sound, the rim assembly 40 is stacked on the vibration system 20, and the circuit board 50 is installed on the frame 10 and electrically connected to the vibration system 20.

Referring to fig. 1 and 2, the vibration system 20 includes a diaphragm assembly 21, a voice coil 22 and a frame 23, the diaphragm assembly 21 is fixedly connected to the frame 10, the voice coil 22 is disposed inside the magnetic circuit system 30 and electrically connected to the circuit board 50, the frame 23 is fixedly connected to the voice coil 22, and the rim assembly 40 and the frame 23 clamp the diaphragm assembly 21. When passing through circuit board 50 and letting in the alternating current in voice coil 22, voice coil 22 can vibrate under the effect of the magnetic field that magnetic circuit 30 produced, and drive the vibrating diaphragm and fill up limit subassembly 40 through skeleton 23 and vibrate together, thereby produce sound, owing to be provided with the pad limit subassembly 40 with skeleton 23 centre gripping voice diaphragm subassembly 21, thereby the joint strength between skeleton 23 and the voice diaphragm subassembly 21 has been strengthened, the problem of easy and skeleton 23 separation of voice diaphragm subassembly 21 when vibration amplitude is great has been avoided, the reliability of speaker 100 has been promoted, prolong the life of speaker 100 simultaneously.

The fixing manner of the diaphragm assembly 21 and the bobbin 23, the rim assembly 40 and the diaphragm assembly 21, and the voice coil 22 and the bobbin 23 is not limited, and in this embodiment, the diaphragm assembly 21 and the bobbin 23, the rim assembly 40 and the diaphragm assembly 21, and the voice coil 22 and the bobbin 23 are all fixed by gluing.

Referring to fig. 2-4, the sound film assembly 21 includes a first sound film 211 and a second sound film 212, the first sound film 211 is disposed around the magnetic circuit system 30 and spaced from the magnetic circuit system 30, the second sound film 212 is disposed around the first sound film 211 and spaced from the first sound film 211, one side of the first sound film 211 away from the magnetic circuit system 30 is fixedly connected to the frame 23, one side of the first sound film 211 close to the magnetic circuit system 30 is fixedly connected to the tub frame 10, one side of the second sound film 212 away from the magnetic circuit system 30 is fixedly connected to the tub frame 10, and one side of the second sound film 212 close to the magnetic circuit system 30 is fixedly connected to the frame 23.

Both the first sound diaphragm 211 and the second sound diaphragm 212 are preferably integrally formed, thereby ensuring the overall strength of the two.

The first diaphragm 211 includes a first edge 213 surrounding the magnetic circuit 30 and spaced from the magnetic circuit 30, a second edge 214 surrounding the first edge 213 and spaced from the first edge 213, and a first flange 215 connected between the first edge 213 and the second edge 214, wherein the first edge 213 is bent at a side (i.e. the inner side) of the first flange 215 close to the magnetic circuit 30 and extends toward the magnetic circuit 30 and is fixedly connected to the frame 10, and the second edge is bent at a side (i.e. the outer side) of the first flange 215 away from the magnetic circuit 30 and extends toward a direction away from the magnetic circuit 30 and is fixedly connected to the frame 23.

The second sound diaphragm 212 includes a third edge 216 annularly disposed outside the second edge 214 and spaced from the second edge 214, a fourth edge 217 annularly disposed outside the third edge 216 and spaced from the third edge 216, and a second flange 218 connected between the third edge 216 and the fourth edge 217, wherein the third edge 216 is bent inside the second flange 218 and extends toward the magnetic circuit 30 and is fixedly connected to the frame 23, and the fourth edge 217 is bent outside the second flange 218 and extends in a direction away from the magnetic circuit 30 and is fixedly connected to the frame 10.

The first edge 213, the second edge, the third edge 216, and the fourth edge 217 are preferably circular and are spaced apart from each other from the inside to the outside.

The rim assembly 40 includes a first rim 41 and a second rim 42, the first rim 41 surrounds the magnetic circuit 30 and is spaced apart from the magnetic circuit 30, the second rim 42 surrounds the first rim 41 and is spaced apart from the first rim 41, and the first rim 41 and the frame 23 clamp the first sound diaphragm 211, the second rim 42 and the frame 23 clamp the second sound diaphragm 212.

Specifically, the first pad edge 41 and the second pad edge 42 are circular rings, the first pad edge 41 and the second pad edge 42 are coaxial, the first pad edge 41 is stacked on the second edge, the second pad edge 42 is stacked on the third edge, so that the first pad edge 41 and the framework 23 clamp the second edge portion 214, and the second pad edge 42 and the framework 23 clamp the third edge portion 216. By providing the second cushion side and the second cushion side 42 on the second edge portion 214 and the third edge portion 216, respectively, the connection strength between the second edge portion 214 and the framework 23 and between the third edge portion 216 and the framework 23 is enhanced, and the risk that the second edge portion 214 and the third edge portion 216 are easily separated from the framework 23 under a large amplitude of the vibration system 20 is avoided.

The material of the first rim 41 and the second rim 42 is not limited, and in this embodiment, the first rim 41 and the second rim 42 are made of plastic with a smaller density, so that the first rim 41 and the second rim 42 have a lighter weight, that is, the vibration system 20 has a lighter weight, and thus the vibration system 20 is beneficial to vibrate.

Referring to fig. 2, 4 and 5, the frame 23 includes a fixing portion 231 fixedly connected to the voice coil 22, a supporting portion 232 annularly disposed outside the fixing portion 231 and spaced from the fixing portion 231, and a connecting rib 233 connecting the fixing portion 231 and the supporting portion 232, wherein the supporting portion 232 connects the first diaphragm 211 and the second diaphragm 212.

In this embodiment, the fixing portion 231 and the supporting portion 232 are both circular rings, the fixing portion 231 is fixed to one end of the voice coil 22 by gluing, so as to suspend the voice coil 22 inside the magnetic circuit 30, so that the voice coil 22 can move relative to the magnetic circuit 30, and one side of the supporting portion 232 close to the magnetic circuit 30 is connected to the second edge portion 214, and one side of the supporting portion 232 far from the magnetic circuit 30 is connected to the third edge portion 216.

The number of the connecting ribs 233 is not limited, and in the present embodiment, there are three connecting ribs 233, and the three connecting ribs 233 are uniformly distributed along the circumferential direction of the fixing portion 231.

The supporting portion 232 has a first receiving groove 234 formed at a side thereof close to the magnetic circuit system 30, and the second edge portion 214 is received in the first receiving groove 234. The supporting portion 232 is provided with a second receiving groove 235 at a side thereof away from the magnetic circuit system 30, the second receiving groove 235 is disposed around the first receiving groove 234 and spaced from the first receiving groove 234, and the third edge portion 216 is received in the second receiving groove 235. By accommodating the second edge portion 214 in the first accommodation groove 234 and the third edge portion 216 in the second accommodation groove 235, the contact area between the first and

second sound films

211 and 212 and the support portion 232 can be increased, the connection strength between the first and

second sound films

211 and 232 and between the second and

second sound films

212 and 232 can be further increased, and the overall thickness of the connection portion between the first and

second sound films

211 and 232 and between the second and third

sound films

212 and 232 can be reduced.

Referring to fig. 2, 5, 7 and 8, the frame 10 includes a bottom plate 11, a side plate 12 surrounding the outer edge of the bottom plate 11, and a surrounding wall 13 protruding from the middle of the bottom plate 11, the magnetic circuit system 30 is fixedly mounted on the surrounding wall 13, one side of the first sound film 211 close to the magnetic circuit system 30 is connected to the surrounding wall 13, one side of the second sound film 212 far from the magnetic circuit system 30 is connected to the side plate 12, that is, the first edge 213 is connected to the surrounding wall 13, and the fourth edge 217 is connected to the side plate 12.

In this embodiment, curb plate 12 ring is established outside perimeter wall 13 and with perimeter wall 13 looks interval, perimeter wall 13 runs through the opening 132 of seting up mounting hole 131 and communicating with mounting hole 131 along the vibration direction of vibration system 20, magnetic circuit 30 sets up the groove 301 of dodging that sets up relatively with opening 132, splice bar 233 passes opening 132 in proper order and dodges and be connected with fixed part 231 behind the groove 301, magnetic circuit 30 installs in mounting hole 131, a plurality of fretwork areas have all been seted up on bottom plate 11 and the curb plate 12, in order to alleviate the quality of basin frame 10.

Preferably, the frame 10 further includes a plurality of fixing blocks 14 disposed on the side plates 12 for fixing the speaker 100 to an external device, and fixing holes 141 are perforated on the fixing blocks 14. The number of the fixing blocks 14 is preferably, but not limited to, four, and the four fixing blocks 14 are spaced apart along the circumferential direction of the side plate 12. Preferably, the distance between any two adjacent fixing blocks 14 is the same, that is, the four fixing blocks 14 are uniformly distributed along the circumferential direction of the side plate 12.

Referring to fig. 3, 6, 7 and 8, the magnetic circuit system 30 includes a magnetic bowl 31 mounted on the frame 10 and a magnetic member 32 accommodated in the magnetic bowl 31 and forming a magnetic gap 302 with the magnetic bowl 31, and the voice coil 22 is suspended in the magnetic gap 302 through the bobbin 23.

The magnetic bowl 31 comprises a first bowl body 33 and a second bowl body 34, the first bowl body 33 comprises a first bottom wall 331 and a first side wall 332 surrounding the edge of the first bottom wall 331, the second bowl body 34 comprises a second bottom wall 341 and a second side wall 342 surrounding the edge of the second bottom wall 341, the first bottom wall 331 and the second bottom wall 341 are arranged opposite to each other, the first side wall 332 and the second side wall 342 extend oppositely with a certain distance therebetween, two ends of the magnetic member 32 are respectively connected with the first bottom wall 331 and the second bottom wall 341 and surround with the first side wall 332 and the second side wall 342 to form a magnetic gap 302, the avoiding groove 301 is arranged on the first side wall 332 and/or the second side wall 342, the voice coil 22 is arranged around the magnetic member 32 and located between the magnetic member 32 and the first side wall 332 and the second side wall 342, the fixing portion 231 of the bobbin 23 is located in the second bowl body 34 and fixedly connected with one end of the voice coil 22 close to the second bottom wall 341, thereby suspending voice coil 22 within magnetic gap 302.

By arranging the second bowl body 34, the second bowl body 34 can guide the magnetic force lines of the magnetic member 32 close to one side of the voice film assembly 21 back to the magnetic gap 302, so that the magnetic force of the magnetic circuit system 30 is fully utilized, and the sensitivity of the loudspeaker 100 is effectively improved.

The first bowl body 33 further includes a first mounting block 333 protruding from the first sidewall 332, the second bowl body 34 further includes a second mounting block 343 protruding from the second sidewall 342, the first mounting block 333 has a first connecting hole 334, the second mounting block 343 has a second connecting hole 344, and the surrounding wall 13 is provided with a first mounting groove 133 for inserting the first mounting block 333 and a second mounting groove 134 for inserting the second mounting block 343.

The number of the first mounting blocks 333 and the second mounting blocks 343 is not limited, and in the present embodiment, there are three first mounting blocks 333 and three second mounting blocks 343, the three first mounting blocks 333 are spaced apart along the circumferential direction of the first sidewall 332, the three second mounting blocks 343 are spaced apart along the circumferential direction of the second sidewall 342, and the first mounting blocks 333 and the second mounting blocks 343 are staggered along the vibration direction of the vibration system 20. Preferably, the distance between any two adjacent first mounting blocks 333 is the same, and the distance between any two adjacent second mounting blocks 343 is the same.

The magnetic part 32 includes a first magnetic steel 321, a pole core 322 and a second magnetic steel 323 sequentially stacked along the vibration direction, the first magnetic steel 321 is located in the first bowl 33 and connected to the first bottom wall 331, and the second magnetic steel 323 is located in the second bowl 34 and connected to the second bottom wall 341.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A loudspeaker, comprising:

a basin stand;

the magnetic circuit system is arranged on the basin frame;

and the cushion edge assembly and the framework clamp the sound film assembly.

2. The loudspeaker according to claim 1, wherein the diaphragm assembly comprises a first diaphragm surrounding the magnetic circuit system and a second diaphragm surrounding the first diaphragm and spaced from the first diaphragm, a side of the first diaphragm remote from the magnetic circuit system and a side of the second diaphragm close to the magnetic circuit system are both fixedly connected to the frame, a side of the first diaphragm close to the magnetic circuit system and a side of the second diaphragm remote from the magnetic circuit system are both fixedly connected to the frame, the rim assembly comprises a first rim and a second rim, the first rim and the frame clamp the first diaphragm, and the second rim and the frame clamp the second diaphragm.

3. The speaker of claim 2, wherein the frame includes a fixing portion fixedly connected to the voice coil, a supporting portion surrounding the fixing portion and spaced apart from the fixing portion, and a connecting rib connecting the fixing portion and the supporting portion, and the supporting portion connects the first diaphragm and the second diaphragm.

4. The speaker of claim 3, wherein the first diaphragm includes a first edge portion disposed around the magnetic circuit system, a second edge portion disposed around the first edge portion and spaced apart from the first edge portion, and a first hinge portion connecting the first edge portion and the second edge portion, the first edge portion is fixedly connected to the frame, and the second edge portion is interposed between the support portion and the first rim.

5. The speaker of claim 4, wherein a first receiving groove for receiving the second edge portion is opened at a side of the support portion adjacent to the magnetic circuit system.

6. The speaker of claim 3, wherein the second diaphragm includes a third edge portion surrounding the first diaphragm, a fourth edge portion surrounding the third edge portion and spaced apart from the third edge portion, and a second flange portion connecting the third edge portion and the fourth edge portion, the third edge portion is interposed between the second pad edge and the support portion, and the third edge portion is fixedly connected to the frame.

7. The speaker of claim 6, wherein a second receiving groove for receiving the third edge is opened on a side of the supporting portion away from the magnetic circuit system.

8. The loudspeaker of claim 2, wherein the first rim and the second rim are both circular and the first rim is coaxial with the second rim.

9. The loudspeaker according to claim 2, wherein the frame comprises a bottom plate, a side plate surrounding the edge of the bottom plate, and a surrounding wall protruding from the middle of the bottom plate, the magnetic circuit system is fixedly mounted on the surrounding wall, the side of the first sound film close to the magnetic circuit system is connected to the surrounding wall, and the side of the second sound film far from the magnetic circuit system is connected to the side plate.

10. The loudspeaker of claim 1, wherein the magnetic circuit system comprises a magnetic bowl mounted on the frame and a magnetic member accommodated in the magnetic bowl and forming a magnetic gap with the magnetic bowl, and the voice coil is arranged outside the magnetic member and suspended in the magnetic gap through the bobbin.