CN211531304U

CN211531304U - Loudspeaker

Info

Publication number: CN211531304U
Application number: CN201922355108.3U
Authority: CN
Inventors: 邵涛; 顾小江; 严绪东
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-09-18
Anticipated expiration: 2029-12-23

Abstract

The utility model provides a loudspeaker, including the basin frame and be fixed in magnetic circuit and the vibration system on the basin frame, magnetic circuit includes the magnetism bowl and is fixed in magnet steel and the utmost point core in the magnetism bowl, be equipped with the magnetic gap among the magnetic circuit, vibration system includes the sound membrane, the sound membrane down, the voice coil loudspeaker voice coil, outer skeleton and inner frame, wherein, the top of basin frame is located to the sound membrane and encloses with the basin frame and close and form accommodating space, down sound membrane and magnetic circuit all are fixed in accommodating space, the outer skeleton is located the sound membrane and is down between the sound membrane, the voice coil loudspeaker voice coil is located the magnetic gap, the one end and the last sound membrane of inner frame are connected, the other end is connected with the voice coil loudspeaker voice coil. Compared with the prior art, the utility model discloses a loudspeaker adopts the mode that exoskeleton, last sound membrane and lower sound membrane combined together, and the both sides of exoskeleton are located to lower sound membrane and last sound membrane symmetry, can finely restrain the loudspeaker and sway in the horizontal direction, reduce the distortion, improve the performance of loudspeaker.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electronic component technical field especially relates to a loudspeaker.

[ background of the invention ]

The prior art speaker includes a magnetic circuit system composed of a magnetic bowl, magnetic steel and a pole core, and a vibration system composed of a voice coil, an inner frame and an upper sound film, but the speaker does not have a lower sound film.

Therefore, when the magnetic circuit system drives the vibration system to vibrate and sound, only the upper sound film in the vibration system works, so that the loudspeaker swings in the vibration process, and the loudspeaker is subjected to horizontal displacement, thereby affecting the performance of the loudspeaker.

Therefore, it is necessary to provide a new speaker to solve the above problems.

[ summary of the invention ]

An object of the utility model is to provide a can restrain speaker that sways.

The technical scheme of the utility model as follows:

in order to achieve the above object, the utility model provides a loudspeaker, include the basin frame and be fixed in magnetic circuit and vibration system on the basin frame, magnetic circuit includes the magnetism bowl and is fixed in magnet steel and utmost point core in the magnetism bowl, be equipped with the magnetic gap among the magnetic circuit, vibration system includes sound membrane, lower sound membrane, voice coil loudspeaker voice coil, exoskeletal frame and inner frame, wherein, it locates to go up the sound membrane the top of basin frame and with the basin frame encloses to close and forms accommodating space, sound membrane and magnetic circuit all are fixed in down in the accommodating space, exoskeletal frame locates go up the sound membrane with between the lower sound membrane, the voice coil loudspeaker voice coil is located in the magnetic gap, the one end of inner frame with go up the sound membrane and connect, the other end with the voice coil loudspeaker voice coil is connected.

As an improvement mode, the upper sound film comprises a dome and a folded ring part for fixing the dome, and the basin stand is connected with the folded ring part.

As an improvement mode, roll over the ring portion including first annular portion of bending, with the first annular tip that the basin frame is connected and with the second annular tip that the ball top is connected, first annular tip passes through first annular portion of bending with second annular end connection, just the internal diameter of first annular tip is greater than the external diameter of second annular tip, the orientation of first annular portion of bending one side of sound membrane is equipped with first ring channel down, the exoskeleton butt in second annular tip.

As a refinement, the dome is located on a side of the folded ring portion close to the magnetic circuit system, and the exoskeleton abuts against the dome.

As an improvement mode, the lower sound membrane includes third annular tip, fourth annular tip and has the second annular portion of bending of second ring channel, the notch direction of second ring channel with the notch direction of first ring channel sets up relatively, third annular tip passes through the second annular portion of bending with fourth annular end connection, just the internal diameter of third annular tip is greater than the external diameter of fourth annular tip, the concave third ring channel that is equipped with in bottom of basin frame inboard, fourth annular tip with the marginal fixed connection of third ring channel one side, third annular tip is unsettled to be located third ring channel top.

As a refinement, the exoskeleton is connected to the third annular end.

As an improvement mode, the bottom of the inner side of the basin frame is further concavely provided with a groove which is arranged at an interval with the third annular groove, the bottom of the groove is convexly provided with a fixing column, the fixing column is provided with a containing cavity which runs through the two axial ends of the fixing column, and the magnetic bowl is fixed in the containing cavity.

As an improvement mode, the magnetic bowl is provided with an accommodating space and a plurality of through holes which penetrate through the magnetic bowl and are communicated with the accommodating space, the voice coil, the magnetic steel and the pole core are all positioned in the accommodating space, the inner framework comprises a first annular frame which is positioned in the magnetic gap and connected with the voice coil, a second annular frame which is positioned outside the magnetic bowl and connected with the upper sound film and a plurality of connecting rods which are arranged at intervals, one end of each connecting rod is connected with the first annular frame, and the other end of each connecting rod is connected with the second annular frame after penetrating through each through hole.

As an improvement mode, the quantity of magnet steel is two, the pole piece is located two between the magnet steel, the accommodation space have towards last diapire of sound membrane one side down and with the relative lower diapire that sets up of last diapire, the orientation of going up the roof down one side of diapire and the orientation of diapire down one side of going up the roof all protruding boss that is equipped with, two the boss respectively the butt in two the magnet steel.

As an improved mode, the vibration system further comprises a connection pad sandwiched between the outer frame and the lower sound film.

The utility model has the advantages that:

compared with the prior art, the loudspeaker of the utility model adopts the mode of combining the outer frame, the upper sound film and the lower sound film, the lower sound film and the upper sound film are symmetrically arranged at two sides of the outer frame, and the swinging of the loudspeaker in the horizontal direction can be well inhibited; and the dome and the outer skeleton in the upper sound film are two parts, so that the thickness of the upper sound film and the size of the outer skeleton can be separately adjusted, the single frequency band of the loudspeaker is adjusted, the distortion is reduced, and the performance of the loudspeaker is further improved.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the speaker of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a partially enlarged view of B in FIG. 2;

fig. 4 is a first exploded view of the speaker of the present invention;

fig. 5 is a second exploded view of the speaker of the present invention;

fig. 6 is a schematic structural view of the upper sound film of the present invention;

fig. 7 is a schematic structural view of the lower sound diaphragm of the present invention;

fig. 8 is a schematic structural view of the basin stand of the present invention.

Reference numerals:

10. a basin stand; 11. a third annular groove; 12. a sound outlet; 13. a groove; 14. fixing a column; 141. an accommodating chamber; 142. avoiding holes; 20. a magnetic circuit system; 21. a magnetic bowl; 211. an accommodating space; 212. perforating; 213. an upper frame body; 214. a lower frame body; 215. an upper ceiling wall; 216. a lower bottom wall; 217. a boss; 22. magnetic steel; 23. a pole piece; 24. a magnetic gap; 30. a vibration system; 31. an upper sound film; 311. a ball top; 312. a folded ring part; 313. a first annular bending part; 314. a first annular end portion; 315. a second annular end portion; 316. a first annular groove; 32. a lower sound film; 321. a third annular end portion; 322. a fourth annular end portion; 323. a second annular bending part; 324. a second annular groove; 33. a voice coil; 34. an outer skeleton; 35. an inner skeleton; 351. a first annular frame; 352. a second annular frame; 353. a connecting rod; 36. a connecting pad; 40. an accommodating space.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the description relating to "first", "second", etc. in the present invention 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 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.

Referring to fig. 1 to 5, the present invention provides a speaker, which includes a frame 10, a magnetic circuit system 20 and a vibration system 30, wherein the magnetic circuit system 20 and the vibration system 30 are fixed on the frame 10.

In this embodiment, the magnetic circuit system 20 includes a magnetic bowl 21, and a magnetic steel 22 and a pole core 23 fixed in the magnetic bowl 21, and a magnetic gap 24 is provided in the magnetic circuit system 20, and the magnetic gap 24 is formed between the magnetic bowl 21 and the magnetic steel 22 and the pole core 23.

The vibration system 30 includes an upper sound film 31, a lower sound film 32, a voice coil 33, an outer frame 34 and an inner frame 35, wherein the upper sound film 31 is disposed on the top of the frame 10 and forms an accommodation space 40 with the frame 10, the lower sound film 32, the voice coil 33, the outer frame 34, the inner frame 35 and the magnetic circuit system 20 are all fixed in the accommodation space 40, the upper sound film 31 includes a globe top 311 and a ring portion 312 for fixing the globe top 311, the frame 10 is connected with the ring portion 312, the outer frame 34 is disposed between the upper sound film 31 and the lower sound film 32, the utility model discloses a speaker adopts the mode that the outer frame 34, the upper sound film 31 and the lower sound film 32 are combined, and the lower sound film 32 and the upper sound film 31 are symmetrically disposed on both sides of the outer frame 34, so as to well suppress the swing of the speaker in the horizontal direction.

In this embodiment, the top of the outer frame 34 abuts against the bottom of the upper sound diaphragm 31, the outer frame 34 and the dome 311 are two parts, the thickness of the dome 311 and the size of the outer frame 34 can be separately adjusted, the single frequency band of the speaker can be adjusted by adjusting the thickness of the dome 311, the distortion is reduced, and the performance of the speaker is further improved.

The voice coil 33 is located in the magnetic gap 24, in this embodiment, the number of the magnetic steels 22 is two, the pole core 23 and the two magnetic steels 22 are stacked in the accommodating space 211, and the pole core 23 is located between the two magnetic steels 22, so that the structure has an effect of increasing the magnetic field of the magnetic gap 24. The voice coil 33 is sleeved outside the pole core 23, one end of the inner frame 35 is connected to the upper diaphragm 31, and the other end of the inner frame 35 is connected to the voice coil 33, so that an alternating driving force can be generated in the magnetic circuit system 20.

Referring to fig. 6, specifically, the bending portion 312 includes a first annular bending portion 313, a first annular end portion 314 connected to the frame 10, and a second annular end portion 315 connected to the dome 311, the first annular end portion 314 is connected to the second annular end portion 315 through the first annular bending portion 313, an inner diameter of the first annular end portion 314 is larger than an outer diameter of the second annular end portion 315, a first annular groove 316 is disposed on a side of the first annular bending portion 313 facing the lower diaphragm 32, and the exoskeleton 34 abuts against the second annular end portion 315. The shape of the first annular end 314 and the second annular end 315 may be various structures, such as a ring plane or a step, and the first annular end 314 and the second annular end 315 are preferably plane in this embodiment, which is more favorable for a stable connection.

The outer diameter of the dome 311 is larger than the inner diameter of the second annular end 315, the dome 311 is located on one side of the folded ring portion 312 close to the magnetic circuit system 20, the dome 311 is disposed between the folded ring portion 312 and the exoskeleton 34, and the exoskeleton 34 abuts against the outer edge of the dome 311.

Referring to fig. 7, the lower sound diaphragm 32 includes a third annular end 321, a fourth annular end 322, and a second annular bending portion 323 having a second annular groove 324, a direction of a notch of the second annular groove 324 is opposite to a direction of a notch of the first annular groove 316, the third annular end 321 is connected to the fourth annular end 322 through the second annular bending portion 323, an inner diameter of the third annular end 321 is larger than an outer diameter of the fourth annular end 322, the third annular groove 11 is recessed in a bottom of an inner side of the frame 10, the fourth annular end 322 is fixedly connected to an edge of one side of the third annular groove 11, the third annular end 321 is suspended above the third annular groove 11, and the exoskeleton 34 is connected to the third annular end 321. The outer frame 34 is arranged outside the magnetic circuit system 20, so that assembly is simplified, and meanwhile, the outer frame 34 can be flexibly placed in the Z axis (namely the height direction of the loudspeaker), so that height stacking is facilitated, and more degrees of freedom are added to the structural design.

Referring to fig. 8, in the present embodiment, the frame 10 is further provided with a plurality of sound holes 12, when the voice coil 33 is energized with an alternating current, the voice coil 33 is subject to an alternating driving force under the action of the magnetic field of the magnetic circuit system 20 to generate an alternating motion, so that the inner frame 35 drives the upper diaphragm 31 to vibrate together, and since the outer frame 34 is fixedly connected to the dome 311 of the upper diaphragm 31, the upper diaphragm 31 drives the outer frame 34 to vibrate, the lower diaphragm 32 is indirectly driven to vibrate, and thus, sound is generated.

In a preferred embodiment, since the contact area between the side of the outer frame 34 facing the lower sound diaphragm 32 and the lower sound diaphragm 32 is small, which may cause the outer frame 34 to separate from the lower sound diaphragm 32, a connection pad 36 is sandwiched between the outer frame 34 and the lower sound diaphragm 32, the outer frame 34 is first fixedly connected to the top of the connection pad 36, and then the bottom of the connection pad 36 is connected to the lower sound diaphragm 32, so that the connection between the outer frame 34 and the lower sound diaphragm 32 is more stable. The connecting pads 36 in this embodiment may be annular pads, or may be two arc-shaped pads symmetrically disposed.

In this embodiment, the bottom of basin frame 10 inboard still is concavely equipped with the recess 13 that sets up with third ring channel 11 interval, and recess 13 is located basin frame 10 middle part, and the bottom of recess 13 is protruding to be equipped with fixed column 14, is equipped with on the fixed column 14 to run through its axial both ends hold the chamber 141, and magnetism bowl 21 is fixed in and holds in the chamber 141.

Magnetic bowl 21 has accommodation space 211 and a plurality of and runs through magnetic bowl 21 and the perforation 212 that is linked together with accommodation space 211, voice coil 33, magnet steel 22 and pole piece 23 all are located accommodation space 211, inner frame 35 is the preparation of flexible material, inner frame 35 is including being located magnetic gap 24 and the first ring frame 351 of being connected with voice coil 33, be located magnetic bowl 21 outside and the second ring frame 352 and the connecting rod 353 of a plurality of interval setting of being connected with last sound membrane 31, second ring frame 352 specifically is through gluing in last sound membrane 31, the one end of each connecting rod 353 all is connected with first ring frame 351, the other end of each connecting rod 353 all is connected with second ring frame 352 after passing respectively each perforation 212.

In this embodiment, the magnetic bowl 21 includes an upper frame 213 and a lower frame 214 connected to the upper frame 213, the upper frame 213 and the lower frame 214 enclose to form an accommodating space 211, the through hole 212 is recessed from the top of the upper frame 213 toward the bottom of the lower frame 214 along the axial direction of the magnetic bowl 21, and when the magnetic bowl is installed, the upper frame 213 can be first pushed into the inner frame 35, and then the voice coil 33 can be fixed in the magnetic bowl 21. Meanwhile, the fixing post 14 is correspondingly provided with a plurality of avoiding holes 142 communicated with the accommodating cavity 141, and each avoiding hole 142 needs to be correspondingly arranged with each through hole 212 after installation.

In a preferred embodiment, the inner wall of the accommodating space 211 has an upper top wall 215 facing one side of the lower sound diaphragm 32 and a lower bottom wall 216 opposite to the upper top wall 215, and both the side of the upper top wall 215 facing the lower bottom wall 216 and the side of the lower bottom wall 216 facing the upper top wall 215 are provided with a protruding boss 217 in a protruding manner, and the two protruding bosses 217 abut against the two magnetic steels 22 respectively, so as to prevent the magnetic steels 22 and the pole piece 23 from shaking relative to the magnetic bowl 21.

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. The utility model provides a loudspeaker, includes the basin frame and is fixed in magnetic circuit and vibration system on the basin frame, magnetic circuit includes the magnetism bowl and is fixed in magnet steel and the utmost point core in the magnetism bowl, be equipped with magnetic gap, its characterized in that among the magnetic circuit: the vibration system comprises an upper sound film, a lower sound film, a voice coil, an outer framework and an inner framework, wherein the upper sound film is arranged at the top of the basin frame and forms an accommodating space with the basin frame in a surrounding mode, the lower sound film and the magnetic circuit system are fixed in the accommodating space, the outer framework is arranged between the upper sound film and the lower sound film, the voice coil is located in the magnetic gap, one end of the inner framework is connected with the upper sound film, and the other end of the inner framework is connected with the voice coil.

2. The loudspeaker of claim 1, wherein: the upper sound film comprises a dome and a ring folding part for fixing the dome, and the basin stand is connected with the ring folding part.

3. The loudspeaker of claim 2, wherein: roll over annular portion include first annular bend portion, with the first annular tip that the basin frame is connected and with the second annular tip that the ball top is connected, first annular tip passes through first annular bend portion with second annular end connection, just the internal diameter of first annular tip is greater than the external diameter of second annular tip, the orientation of first annular bend portion one side of sound membrane is equipped with first ring channel down, the exoskeleton butt in second annular tip.

4. A loudspeaker according to claim 3, wherein: the top dome is located on one side of the folded ring part close to the magnetic circuit system, and the outer framework is abutted to the top dome.

5. A loudspeaker according to claim 3, wherein: lower voice diaphragm includes third annular tip, fourth annular tip and has the second annular of second ring channel the portion of bending, the notch direction of second ring channel with the notch direction of first ring channel sets up relatively, third annular tip passes through the second annular bend the portion with fourth annular end connection, just the internal diameter of third annular tip is greater than the external diameter of fourth annular tip, the concave third ring channel that is equipped with in bottom of basin frame inboard, fourth annular tip with the edge fixed connection of third ring channel one side, third annular tip is unsettled to be located third ring channel top.

6. The loudspeaker of claim 5, wherein: the exoskeleton is connected with the third annular end portion.

7. The loudspeaker of claim 5, wherein: the bottom of the inner side of the basin frame is further concavely provided with a groove which is arranged at an interval with the third annular groove, the bottom of the groove is convexly provided with a fixing column, the fixing column is provided with a containing cavity which runs through the two axial ends of the fixing column, and the magnetic bowl is fixed in the containing cavity.

8. The loudspeaker of claim 2, wherein: the magnetic bowl is provided with an accommodating space and a plurality of through holes which penetrate through the magnetic bowl and are communicated with the accommodating space, the voice coil, the magnetic steel and the pole core are all positioned in the accommodating space, the inner framework comprises a first annular frame which is positioned in the magnetic gap and connected with the voice coil, a second annular frame which is positioned outside the magnetic bowl and connected with the upper sound film and a plurality of connecting rods which are arranged at intervals, one end of each connecting rod is connected with the first annular frame, and the other end of each connecting rod is connected with the second annular frame after penetrating through the through holes respectively.

9. The loudspeaker of claim 8, wherein: the quantity of magnet steel is two, the utmost point core is located two between the magnet steel, the accommodation space has the orientation last diapire of sound membrane one side down and with the relative lower diapire that sets up of last diapire, the orientation of going up the roof one side of diapire down and the orientation of diapire down one side of going up the roof all protruding boss that is equipped with, two the boss respectively the butt in two the magnet steel.

10. The loudspeaker of claim 1, wherein: the vibration system further comprises a connecting pad clamped between the outer framework and the lower sound film.