WO2022006965A1

WO2022006965A1 - Loudspeaker

Info

Publication number: WO2022006965A1
Application number: PCT/CN2020/102429
Authority: WO
Inventors: 严绪东; 邵涛; 顾小江
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-07-06
Filing date: 2020-07-16
Publication date: 2022-01-13
Also published as: CN213462308U

Abstract

Provided is a loudspeaker, comprising: a frame having an accommodating cavity, and a magnetic circuit system and a vibration system that are accommodated in the accommodating cavity. The magnetic circuit system comprises a magnetic bowl fixed to the frame, magnetic steel that is located in the magnetic bowl and forms a magnetic gap with the magnetic bowl, and a voice coil located in the magnetic gap. The vibration system comprises a vibrating diaphragm, an upper framework, a lower framework and an annular support frame, wherein the upper framework comprises a first annular plate connected to the vibrating diaphragm, a second annular plate which is coaxial with the first annular plate, and a first bent arm for connecting the first annular plate to the second annular plate; and the lower framework comprises a third annular plate, a fourth annular plate which is coaxial with the third annular plate, and a second bent arm for connecting the third annular plate to the fourth annular plate. The third annular plate is connected to the first annular plate by means of the annular support frame, the second annular plate and the fourth annular plate are respectively provided with a first step and a second step, the voice coil is provided with a first positioning slot and a second positioning slot, and the first step and the second step are respectively arranged in the first positioning slot and the second positioning slot by means of an adhesive liquid.

Description

speaker

technical field

The utility model relates to the technical field of the structure of electronic components, in particular to a loudspeaker.

Background technique

With the rapid development of mobile communication technology in recent years, consumers are increasingly using mobile communication devices with voice functions, such as portable phones, handheld game consoles, laptop computers, multimedia players, and devices that can communicate through public or private communication networks. other devices that communicate. The speaker is used as a voice playback device, and its design directly affects the performance of the speaker.

The speaker includes a basin frame, a magnetic circuit system and a vibration system accommodated in the basin frame. A voice coil, a magnetic bowl and a magnetic steel are arranged in the magnetic circuit system. The voice coil is located in the magnetic gap generated by the magnetic bowl and the magnetic steel. The vibration system includes The diaphragm and the skeleton, the diaphragm is connected with the voice coil through the skeleton, and the number of skeletons can be two, namely the upper skeleton and the lower skeleton. The coil will be subjected to an alternating driving force, resulting in an alternating motion, and the diaphragm can vibrate along the vibration direction of the voice coil by pushing the upper frame and the lower frame together to generate sound.

technical problem

However, the front gluing surface of the upper frame, the lower frame and the voice coil is a plane, and it is easy to fall off between the upper frame and the voice coil or between the lower frame and the voice coil.

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

technical solutions

The purpose of the utility model is to provide a loudspeaker that is not easy to fall off between the upper frame and the voice coil, and between the lower frame and the voice coil.

The technical scheme of the present utility model is as follows:

In order to achieve the above purpose, the present invention provides a loudspeaker, comprising a basin frame with a receiving cavity, a magnetic circuit system and a vibration system accommodated in the receiving chamber, and the magnetic circuit system includes a magnetic circuit system fixed on the basin frame A magnetic bowl, a magnetic steel positioned in the magnetic bowl to form a magnetic gap with the magnetic bowl, and a voice coil positioned in the magnetic gap, the vibration system includes a A vibrating membrane, an upper frame, a lower frame and an annular support frame located below the vibrating membrane, the upper frame comprising a first annular plate connected to the vibrating membrane, coaxial with the first annular plate and spaced apart The second annular plate and the first bending arm connecting the first annular plate and the second annular plate, the lower frame includes a third annular plate located below the first annular plate, and the first annular plate A fourth annular plate with three annular plates coaxial and spaced apart and a second bending arm connecting the third annular plate and the fourth annular plate, the third annular plate is connected to the third annular plate through the annular support frame The first annular plate is connected, the ends of the second annular plate and the fourth annular plate facing the voice coil are respectively provided with a first step and a second step, and the voice coil has a first positioning groove and is connected with the first The second positioning groove is arranged opposite to the positioning groove, the first step of the upper frame is bonded to the first positioning groove by a viscous liquid, and the second step of the lower frame is bonded by a viscous liquid in the second positioning groove.

As an improvement, both the first positioning groove and the second positioning groove are annular, and the voice coil has an upper wall facing the side of the diaphragm, and a lower wall opposite to the upper wall. and an outer wall surface connecting the upper wall surface and the lower wall surface and facing the side of the annular support frame, the first positioning groove is recessed from the upper wall surface toward the lower wall surface and is connected to the outer side The wall surfaces communicate with each other, and the second positioning groove is recessed from the lower wall surface toward the upper wall surface and communicated with the outer side wall surface.

As an improvement, the outer diameter of the second annular plate is smaller than the inner diameter of the first annular plate, and the second annular plate includes a first annular base plate connected to the first bending arm and a convex The first annular side plate on the side away from the vibrating membrane of the first annular substrate, the inner diameter of the first annular side plate is larger than the inner diameter of the first annular substrate, and the first annular side plate is at The first step is formed on the first annular substrate.

As an improvement, the outer diameter of the fourth annular plate is smaller than the inner diameter of the third annular plate, and the fourth annular plate includes a second annular base plate connected to the second bending arm and a convex On the second annular side plate on the side of the second annular substrate facing the diaphragm, the inner diameter of the second annular side plate is larger than the inner diameter of the second annular substrate, and the second annular side plate is at The second step is formed on the second annular substrate.

As an improvement, the vibration system further includes a flexible circuit assembly, the flexible circuit assembly includes a plurality of wires and a plurality of pads, a plurality of first through holes are formed through the pot frame, and the annular support frame is spaced apart There are several first gaps, one end of the wire is fixed on the outer wall of the basin frame, the other end is electrically connected to the voice coil after passing through the first through hole and the first gap, and the middle part of the wire is It is fixed on the first annular plate through a plurality of the pads.

As an improvement, the basin frame includes a bottom plate, a third annular side plate bent and extended from the edge of the bottom plate to one side of the diaphragm, and a support protrusion protruding from the middle of the bottom plate. The bottom plate and the third annular side plate are enclosed to form the containing cavity, the support protrusion has a containing cavity extending through both axial ends thereof and the bottom plate, and the magnetic bowl is fixed in the containing cavity.

As an improvement, the magnetic bowl has an accommodating space and a plurality of second through holes penetrating the magnetic bowl and communicating with the accommodating space, and both the voice coil and the magnetic steel are located in the accommodating space Inside, a second notch corresponding to the second through hole is formed through the support protrusion, and both the first bending arm and the second bending arm pass through the second notch and the first bending arm in sequence. After the two holes are perforated, they are fixedly connected to the voice coil.

As an improvement, the magnetic circuit system further includes a pole core located in the accommodating space, the number of the magnetic steel is two, the pole core is located between the two magnetic steels, and the sound The loop is sleeved outside the pole core.

As an improvement, the magnetic bowl includes an upper cover and a lower cover, at least one of the upper cover and the lower cover is fixedly connected to the accommodating cavity, and the upper cover is fastened to the The accommodating space is formed on the lower cover and enclosed with the lower cover, the two magnetic steels are respectively abutted on the upper cover and the lower cover, and the second through hole is opened in the on the upper cover and/or the lower cover.

As an improvement, the diaphragm includes a first sound film connected with the third annular side plate and a second sound film spaced from the first sound film and connected with the support protrusion , the first sound membrane and the second sound membrane are both annular and coaxially arranged, and the second sound membrane is connected with the first sound membrane through the upper frame.

beneficial effect

The voice coil of the loudspeaker of the utility model has a first positioning groove and a second positioning groove opposite to each other. Connected to the second positioning groove, compared with the original fixing method, this fixing method increases the gluing area of the upper frame and the voice coil, as well as the lower frame and the voice coil, and better improves the high-power lower frame and the voice coil. , and the problem of the separation of the lower frame and the voice coil, making it more firmly fixed.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the loudspeaker of the present invention;

Fig. 2 is the sectional view of A-A in Fig. 1;

Fig. 3 is a partial enlarged schematic diagram at B in Fig. 2;

FIG. 4 is an exploded view one of the loudspeaker of the present invention;

Fig. 5 is the exploded view two of the loudspeaker of the present utility model;

Fig. 6 is the structural representation one of the basin frame of the present utility model;

Fig. 7 is the structural representation two of the basin frame of the present utility model;

Fig. 8 is the structural representation of the upper skeleton of the present invention;

Fig. 9 is the partial enlarged schematic diagram of C place in Fig. 8;

Fig. 10 is the structural representation of the lower frame of the present invention;

Fig. 11 is a partial enlarged schematic diagram at D in Fig. 10;

12 is a schematic structural diagram of a voice coil of the present invention;

FIG. 13 is a cross-sectional view of E-E in FIG. 12 .

Reference number:

10. Basin frame; 11. Receiving cavity; 12. Bottom plate; 121. First perforation; 13. Third annular side plate; 14. Supporting protrusion; 141. Receiving cavity; 144, the first threaded hole; 145, the fourth positioning groove; 146, the second threaded hole; 20, the magnetic circuit system; 21, the magnetic bowl; 211, the accommodating space; 212, the second perforation; 2121, the first U-shaped hole; 2122, second U-shaped hole; 213, upper cover body; 2131, first lug; 2132, first through hole; 214, lower cover body; 2141, second lug; 2142, second through hole hole; 22, magnetic gap; 23, magnetic steel; 24, voice coil; 241, first positioning slot; 242, second positioning slot; 243, upper wall surface; 244, lower wall surface; 245, outer side wall surface; 25, pole core 30, vibration system; 31, diaphragm; 311, first sound film; 3111, first ring end; 3112, second ring end; 3113, first ring part; 312, second sound film; 3, the third annular end; 3122, the fourth annular end; 3123, the second ring part; 32, the upper frame; 321, the first annular plate; 322, the second annular plate; 3221, the first step; 3222, 3223, the first annular side plate; 323, the first bending arm; 3231, the wire slot; 33, the lower frame; 331, the third annular plate; 332, the fourth annular plate; 3321, the second Step; 3322, the second annular base plate; 3323, the second annular side plate; 333, the second bending arm; 334, the third gap; 34, the annular support frame; 341, the first gap; 35, the flexible circuit assembly; 351 , wire; 352, pad; 36, pressure ring.

Embodiments of the present invention

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily Used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

It should be noted that the descriptions involving "first", "second", etc. in the present utility model are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implying the indicated technical features. quantity. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present utility model.

Please refer to FIG. 1 to FIG. 5 , the present invention provides a loudspeaker. The loudspeaker includes a basin frame 10 , a magnetic circuit system 20 and a vibration system 30 . The basin frame 10 has a receiving cavity 11 , and both the magnetic circuit system 20 and the vibration system 30 are accommodated. in the receiving cavity 11 .

The magnetic circuit system 20 includes a magnetic bowl 21 fixed on the basin frame 10, a magnetic steel 23 located in the magnetic bowl 21 to form a magnetic gap 22 with the magnetic bowl 21, and a voice coil 24 located in the magnetic gap 22. The vibration system 30 includes a vibration The diaphragm 31, the upper frame 32, the lower frame 33, the annular support frame 34 and the flexible circuit assembly 35, the diaphragm 31 is fixed on the basin frame 10 for vibrating and sounding, and the upper frame 32, the lower frame 33 and the annular support frame 34 are all located at Below the diaphragm 31, one end of the upper frame 32 is connected to the diaphragm 31, the other end is connected to the top of the voice coil 24, one end of the lower frame 33 is connected to the upper frame 32 through the annular support frame 34, and the other end is connected to the voice coil 24. The bottom is connected, the flexible circuit assembly 35 includes a plurality of wires 351 , the basin frame 10 is provided with a plurality of first through holes 121 , the annular support frame 34 is provided with a plurality of first notches 341 at intervals, and one end of the wires 351 is fixed to the outer wall of the basin frame 10 The upper end and the other end pass through the first through hole 121 and the first gap 341 and are electrically connected to the voice coil 24 to energize the voice coil 24. When the voice coil 24 is fed with an alternating current, under the action of the magnetic field of the magnetic circuit system 20 , the voice coil 24 will be moved up and down by an alternating driving force, resulting in alternating motion, and the diaphragm 31 can be pushed to vibrate along the vibration direction of the voice coil 24 to generate sound.

Referring further to FIGS. 8 to 13 , in this embodiment, the upper frame 32 includes a first annular plate 321 connected to the diaphragm 31 , a second annular plate 322 spaced from the first annular plate 321 , and connected to the first annular plate 321 321 and the first bending arm 323 of the second annular plate 322, the first annular plate 321 and the second annular plate 322 are coaxially arranged, the outer diameter of the second annular plate 322 is smaller than the inner diameter of the first annular plate 321, the lower frame 33 Including a third annular plate 331 located below the first annular plate 321, a fourth annular plate 332 coaxial with the third annular plate 331 and spaced apart, and a second bending connecting the third annular plate 331 and the fourth annular plate 332 Arm 333, the outer diameter of the fourth annular plate 332 is smaller than the inner diameter of the third annular plate 331, the third annular plate 331 is connected to the first annular plate 321 through the annular support frame 34, the second annular plate 322 and the fourth annular plate 332 face One end of the voice coil 24 is respectively provided with a first step 3221 and a second step 3321. The voice coil 24 has a first positioning groove 241 and a second positioning groove 242 opposite to the first positioning groove 241. The first positioning groove 241 and The second positioning grooves 242 are all annular, the first step 3221 of the upper frame 32 is bonded to the first positioning groove 241 by viscous liquid, and the second step 3321 of the lower frame 33 is bonded to the second positioning groove 242 by the viscous liquid , this fixing method increases the gluing area of the upper frame 32 and the voice coil 24, and the lower frame 33 and the voice coil 24, and better improves the high-power lower frame 32 and the voice coil 24, and the lower frame 33 and the voice coil 24 To solve the problem of separation, the upper frame 32 and the voice coil 24 and the lower frame 33 and the voice coil 24 are fixed more firmly.

Specifically, the voice coil 24 has an upper wall surface 243 facing the side of the diaphragm 31 , a lower wall surface 244 arranged opposite to the upper wall surface 243 , and an outer wall surface connecting the upper wall surface 243 and the lower wall surface 244 and facing the side of the annular support frame 34 . 245, the first positioning groove 241 is recessed from the upper wall surface 243 toward the lower wall surface 244 and communicated with the outer side wall surface 245, and the second positioning groove 242 is recessed from the lower wall surface 244 toward the upper wall surface 243 and connected with the outer side wall surface 245. The cross sections of the first positioning groove 241 and the second positioning groove 242 are both "L"-shaped, and the upper, lower and outer sides of the voice coil 24 are designed in a staggered layer structure.

The second annular plate 322 includes a first annular base plate 3222 connected to the first bending arm 323 and a first annular side plate 3223 protruding from the side of the first annular base plate 3222 away from the diaphragm 31 . The outer diameter of 3223 is the same as the outer diameter of the first annular base plate 3222, but the inner diameter of the first annular side plate 3223 is larger than the inner diameter of the first annular base plate 3222, so that the first annular side plate 3223 forms the first annular base plate 3222 on the first annular base plate 3222. A step 3221 is provided for matching with the first positioning groove 241 .

The fourth annular plate 332 includes a second annular base plate 3322 connected to the second bending arm 333 and a second annular side plate 3323 protruding from the side of the second annular base plate 3322 facing the diaphragm 31 . The outer diameter of 3323 is the same as the outer diameter of the second annular base plate 3322, the inner diameter of the second annular side plate 3323 is larger than the inner diameter of the second annular base plate 3322, and the second annular side plate 3323 forms a second step on the second annular base plate 3322 3321, so as to match with the second positioning groove 242.

As a preferred embodiment, the flexible circuit assembly 35 further includes a plurality of bonding pads 352 , and the part of the wire 351 located on the outer wall of the pot frame 10 and the middle of the wire 351 are respectively fixed to the outer wall of the pot frame 10 and the first ring shape through the plurality of bonding pads 352 In this way, the wire 351 can be prevented from being substantially bent, and the bottom of the first bending arm 323 is provided with a wire accommodating groove 3231 along its length. 351 for positioning.

Referring to FIGS. 2 to 7 , in this embodiment, the basin frame 10 includes a bottom plate 12 , a third annular side plate 13 bent and extended from the edge of the bottom plate 12 to the side of the diaphragm 31 , and a support protruding from the middle of the bottom plate 12 . The protrusion 14, the bottom plate 12 and the third annular side plate 13 are enclosed to form a receiving cavity 11. The bottom plate 12 is a hollow plate. In the accommodating cavity 141 , the magnetic bowl 21 is fixed in the accommodating cavity 141 .

The magnetic bowl 21 has an accommodating space 211 and a plurality of second through holes 212 penetrating the magnetic bowl 21 and communicating with the accommodating space 211. Both the voice coil 24 and the magnetic steel 23 are located in the accommodating space 211. Specifically, the magnetic bowl 21 It includes an upper cover 213 and a lower cover 214. At least one of the upper cover 213 and the lower cover 214 is fixedly connected to the accommodating cavity 141. The upper cover 213 is fastened to the lower cover 214 and enclosed with the lower cover 214. In the accommodating space 211, the magnetic circuit system 20 further includes a pole core 25 located in the accommodating space 211, the number of the magnet steel 23 is two, the pole core 25 is located between the two magnet steel 23, the voice coil 24, the pole core 25 and The two magnetic steels 23 are both located in the accommodating space 211. The magnetic steels 23 and the pole core 25 form the magnetic gap 22 with the magnetic bowl 21 in the magnetic circuit system 20. The voice coil 24 is sleeved outside the pole core 25. The two magnets 23 are respectively abutted against the upper cover 213 and the lower cover 214 , and the second through holes 212 are opened on the upper cover 213 and/or the lower cover 214 .

At the same time, a second notch 142 corresponding to the second through hole 212 is formed through the supporting protrusion 14 , and the first bending arm 323 and the second bending arm 333 pass through the second notch 142 and the second through hole 212 in sequence. It is fixedly connected with the voice coil 24, and one end of the wire 351 is fixed on the outer wall of the basin frame 10, and the other end passes through the first through hole 121 and then passes through the second notch 142 and the second through the second bending arm 333 in turn. The through hole 212 is electrically connected to the voice coil 24. In this embodiment, in order to prevent the fourth annular plate 332 from interfering with the penetration of the wire 351, a third gap is recessed on the fourth annular plate 332 and the second bending arm 333. 334.

In this embodiment, the magnetic bowl 21 further includes a plurality of first fasteners and a plurality of second fasteners. A side of the upper cover 213 close to the lower cover 214 is protruded with a plurality of first lugs 2131 . A first through hole 2132 is formed on the lug 2131, a plurality of third positioning grooves 143 and a first threaded hole 144 on the bottom surface of the third positioning groove 143 are recessed on the top of the supporting protrusion 14. The first lug 2131 is Placed in the third positioning groove 143 , the first fastener passes through the first through hole 2132 and is fastened to the first threaded hole 144 , thereby fixing the upper cover 213 in the accommodating cavity 141 of the support protrusion 14 .

A plurality of second lugs 2141 are provided on the side of the lower cover 214 close to the upper cover 213 , each of the second lugs 2141 is provided with a second through hole 2142 , and the bottom of the supporting protrusion 14 is concavely provided with a plurality of fourth positioning The groove 145 and the second threaded hole 146 on the bottom surface of the fourth positioning groove 145, the second lug 2141 is clamped in the fourth positioning groove 145, the second fastener passes through the second through hole 2142 and is connected to the second The screw holes 146 are fastened and connected, so that the lower cover body 214 is also fixed in the accommodating cavity 141 of the support protrusion 14 .

In this embodiment, a first U-shaped hole 2121 is formed through the upper cover body 213 , a second U-shaped hole 2122 is formed through the lower cover body 214 correspondingly, and the first U-shaped hole 2121 and the second U-shaped hole 2122 are surrounded by The above-mentioned second through holes 212 are synthesized.

The vibration system 30 further includes a pressure ring 36 , and the diaphragm 31 includes a first sound film 311 connected with the third annular side plate 13 and a second sound film spaced apart from the first sound film 311 and connected with the support protrusion 14 . 312, the first sound film 311 and the second sound film 312 are both annular and coaxially arranged, the first sound film 311 includes a first annular end portion 3111 connected to the basin frame 10, and is spaced from the first annular end portion 3111 The second annular end portion 3112 and the first annular portion 3113 connecting the first annular end portion 3111 and the second annular end portion 3112 are provided. The inner diameter of the first annular end portion 3111 is larger than the outer diameter of the second annular end portion 3112 The second sound membrane 312 includes a third annular end portion 3121, a fourth annular end portion 3122 spaced from the third annular end portion 3121 and connected to the support protrusion 14, and connecting the third annular end portion 3121 and the fourth annular end portion 3122. The second folded ring portion 3123 between the annular end portions 3122, the fourth annular end portion 3122 is fixed on the support protrusion 14 through the pressing ring 36, the inner diameter of the third annular end portion 3121 is larger than the outer diameter of the fourth annular end portion 3122 , and the outer diameter of the third annular end 3121 is smaller than the inner diameter of the second annular end 3112 , the third annular end 3121 on the second sound membrane 312 passes through the upper frame 32 and the second annular end on the first sound membrane 311 Section 3112 is connected.

The above are only the embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these belong to The scope of protection of the utility model.

Claims

A loudspeaker, comprising a basin frame with a receiving cavity, a magnetic circuit system and a vibration system accommodated in the receiving chamber, the magnetic circuit system comprising a magnetic bowl fixed on the basin frame, located in the magnetic bowl A magnetic steel forming a magnetic gap with the magnetic bowl and a voice coil located in the magnetic gap, characterized in that the vibration system includes a diaphragm fixed on the basin frame for vibrating and sounding, and a diaphragm located in the magnetic gap. The upper frame, the lower frame and the annular support frame under the diaphragm, the upper frame includes a first annular plate connected with the diaphragm, a second annular plate coaxial with the first annular plate and spaced apart, and a first bending arm connecting the first annular plate and the second annular plate, the lower frame includes a third annular plate located below the first annular plate, coaxial with the third annular plate and a fourth annular plate arranged at intervals and a second bending arm connecting the third annular plate and the fourth annular plate, the third annular plate is connected to the first annular plate through the annular support frame, The ends of the second annular plate and the fourth annular plate facing the voice coil are respectively provided with a first step and a second step, and the voice coil has a first positioning groove and a first positioning groove opposite to the first positioning groove. The second positioning groove, the first step of the upper frame is bonded to the first positioning groove by a viscous liquid, and the second step of the lower frame is bonded to the second positioning groove by a viscous liquid in the slot.
The loudspeaker according to claim 1, wherein both the first positioning groove and the second positioning groove are annular, and the voice coil has an upper wall surface facing the side of the diaphragm, and the upper wall surface is opposite to the upper wall. A lower wall surface with opposite wall surfaces and an outer side wall surface connecting the upper wall surface and the lower wall surface and facing the side of the annular support frame, the first positioning groove is from the upper wall surface to the side of the lower wall surface The second positioning groove is concave and communicated with the outer side wall surface, and the second positioning groove is concave and communicated with the outer side wall surface from the lower wall surface toward the upper wall surface.
The loudspeaker according to claim 2, wherein the outer diameter of the second annular plate is smaller than the inner diameter of the first annular plate, and the second annular plate comprises a A first annular base plate and a first annular side plate protruding from the side of the first annular base plate away from the vibrating membrane, the inner diameter of the first annular side plate is larger than the inner diameter of the first annular base plate, and the The first annular side plate forms the first step on the first annular base plate.
The loudspeaker according to claim 2, wherein the outer diameter of the fourth annular plate is smaller than the inner diameter of the third annular plate, and the fourth annular plate comprises a A second annular base plate and a second annular side plate protruding on the side of the second annular base plate facing the diaphragm, the inner diameter of the second annular side plate is larger than the inner diameter of the second annular base plate, and the The second annular side plate forms the second step on the second annular base plate.
The loudspeaker according to claim 4, wherein the vibration system further comprises a flexible circuit assembly, the flexible circuit assembly includes a plurality of wires and a plurality of solder pads, and a plurality of first through holes are formed through the basin frame, so that the The annular support frame is provided with a number of first notches at intervals, one end of the wire is fixed on the outer wall of the basin frame, and the other end is electrically connected to the voice coil after passing through the first through holes and the first notches , and the middle of the wire is fixed on the first annular plate through a plurality of the pads.
The loudspeaker according to claim 1, wherein the basin frame comprises a bottom plate, a third annular side plate bent and extended from the edge of the bottom plate to one side of the diaphragm, and a third annular side plate protruding from the middle of the bottom plate The support protrusion, the bottom plate and the third annular side plate enclose the receiving cavity, the support protrusion has a receiving cavity through its axial ends and the bottom plate, and the magnetic bowl is fixed in the receiving cavity intracavity.
The loudspeaker according to claim 6, wherein the magnetic bowl has an accommodating space and a plurality of second through holes penetrating the magnetic bowl and communicating with the accommodating space, the voice coil and the magnetic steel are located in the accommodating space, the support protrusion is provided with a second gap corresponding to the second through hole, and both the first bending arm and the second bending arm pass through the The second notch and the second through hole are then fixedly connected to the voice coil.
The loudspeaker according to claim 7, wherein the magnetic circuit system further comprises a pole core located in the accommodating space, the number of the magnetic steel is two, and the pole core is located in two of the magnetic steels. Between the steels, the voice coil is sleeved outside the pole core.
The loudspeaker according to claim 8, wherein the magnetic bowl comprises an upper cover and a lower cover, and at least one of the upper cover and the lower cover is fixedly connected to the accommodating cavity, and the The upper cover body is buckled on the lower cover body and enclosed with the lower cover body to form the accommodating space, the two magnetic steels are respectively abutted on the upper cover body and the lower cover body, the The second through hole is opened on the upper cover and/or the lower cover.
The loudspeaker according to claim 6, wherein the diaphragm comprises a first sound film connected to the third annular side plate and a first sound film spaced apart from the first sound film and from the support protrusion For the connected second sound membrane, the first sound membrane and the second sound membrane are both annular and coaxially arranged, and the second sound membrane is connected with the first sound membrane through the upper frame.