WO2021232475A1

WO2021232475A1 - Loudspeaker

Info

Publication number: WO2021232475A1
Application number: PCT/CN2020/093207
Authority: WO
Inventors: 肖波; 令狐荣林
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声光电科技(常州)有限公司
Priority date: 2020-05-20
Filing date: 2020-05-29
Publication date: 2021-11-25
Also published as: CN212034341U

Abstract

The present utility model provides a loudspeaker. The loudspeaker comprises a basket, a magnetic circuit system, and a vibration system. The vibration system comprises a voice coil, a framework, a first diaphragm, a second diaphragm, and a third diaphragm. The framework comprises a second annular framework and a first annular framework. The second annular framework comprises a second annular framework body fixedly connected to the second diaphragm, a connection plate which extends from the second annular framework body toward the voice coil and is fixed to the voice coil, and a second flange formed by extending from one side of the connection plate toward a direction close to the first diaphragm. The first annular framework comprises a first annular framework body, a limiting plate provided between the first annular framework body and the connection plate, and a first flange formed by extending from one side of the limiting plate toward the first diaphragm. The first flange abuts against the second flange. The connection plate, the limiting plate, the second flange, and the first flange enclose to form an adhesive groove. The adhesive groove is filled with an adhesive. The present solution can improve the overall vibration stability of a vibration system of a loudspeaker, thus improving the sound production performance of a loudspeaker.

Description

A kind of speaker

Technical field

The utility model belongs to the technical field of sound generating devices, and particularly relates to a loudspeaker.

Background technique

With the advent of the mobile Internet era, the number of smart mobile devices continues to rise, and the functions of smart mobile devices are diverse, one of which is high-quality music functions, and speakers are an essential element to achieve high-quality music functions. Device.

In order to make the sound range of the speaker wider and the effect more three-dimensional, the speaker will be used. The speaker usually includes a basin frame, a vibration system installed on the basin frame, and a magnetic circuit system. The vibration system includes a voice coil, a frame, a diaphragm, and a dome. , The magnetic circuit system drives the voice coil to vibrate. A set of diaphragms and domes are set on both sides of the voice coil. The same set of domes are connected to the diaphragm. The voice coil is connected to the two sets of domes in the direction of vibration through a skeleton to drive The corresponding diaphragm produces sound, but the arrangement of the single-frame structure in the related art cannot ensure that the diaphragms on both sides of the voice coil vibrate synchronously and stably, which affects the sound production effect.

technical problem

The purpose of the utility model is to provide a loudspeaker with higher vibration stability and better sound effect.

Technical solutions

The technical scheme of the present invention is as follows: a speaker is provided, which includes a basin frame with an accommodation space, a magnetic circuit system accommodated in the accommodation space and having a magnetic gap, and a magnetic circuit system accommodated in the accommodation space and connected by the magnetic circuit The system drives a vibration system that vibrates. The vibration system includes a first diaphragm arranged between the basin frame and the magnetic circuit system, a second diaphragm arranged opposite to the first diaphragm, and The third diaphragm between the first diaphragm and the second diaphragm, the voice coil inserted into the magnetic gap, and the first diaphragm between the first diaphragm and the third diaphragm. A ring frame and a second ring frame arranged between the second diaphragm and the third diaphragm; the first ring frame is erected on the second ring frame; the second ring frame includes A second annular skeleton body vibrating in the vibration direction of the voice coil and a connecting plate connected between the second annular skeleton body and the voice coil; the first annular skeleton includes a vibration in the voice coil vibration direction The first ring-shaped frame body and the limiting plate disposed between the first ring-shaped frame body and the connecting plate; the connecting plate is fixedly connected to the limiting plate, and one side of the connecting plate faces closer to the The direction of the first diaphragm extends to form a first flanging, one side of the limiting plate extends in a direction close to the first diaphragm to form a second flanging, and one end of the first flanging is connected to the first flange. One end of the two flanges abuts, and the connecting plate, the limiting plate, the first flange and the second flange are enclosed to form a glue groove.

Further, the end of the first ring frame body close to the second ring frame extends toward the voice coil to form a first connecting edge, and the limiting plate includes a first connecting edge that is close to the voice coil. The side extends in a direction close to the second annular frame to form a first connecting piece and a fixing piece extending from the end of the first connecting piece close to the second annular frame toward the voice coil, and the second The flanging extends from the fixing piece and the other end of the second flanging abuts against the first connecting piece; the end of the second annular skeleton body close to the second diaphragm faces the voice coil Extends to form a second connecting edge, the side of the second connecting edge close to the voice coil extends in a direction close to the first annular frame to form a second connecting piece, and the connecting plate is closer to the second connecting piece The end of the first annular skeleton is formed by extending.

Further, the vibration system further includes a flexible circuit board arranged between the second connecting edge and the second diaphragm and electrically connected to the voice coil, the connecting board is provided with an escape hole, and the sound The lead wire of the loop is electrically connected to the flexible circuit board through the escape hole.

Further, the end of the second ring frame body close to the first ring frame extends in a direction away from the voice coil to form a second extension edge, and one end of the third diaphragm is fixed to the second extension edge And the first connecting edge.

Further, the vibration system further includes a spacer arranged between the second extension edge and the first connecting edge, and the third diaphragm is sandwiched between the spacer and the first connecting edge. between.

Further, the second flanging includes a substrate close to the voice coil and an extension piece connected to the substrate close to the first flanging side, and the substrate is in the vibration direction of the voice coil. The height of is greater than the height of the extension piece in the vibration direction of the voice coil.

Further, an end of the connecting plate away from the main body of the second annular frame extends to form a connecting leg fixedly connected to the voice coil.

Further, the first diaphragm includes a first inner folding ring fixedly connected to the magnetic circuit system at one end and fixed to the first ring frame at the other end, and a first inner folding ring fixedly connected to the first inner folding ring at one end. A spherical top and a first outer folding ring whose one end is fixedly connected with the end of the first spherical top away from the first inner folding ring and the other end is fixedly connected with the basin frame.

Further, the second diaphragm includes a second dome fixedly connected to the second ring frame at one end, and one end fixedly connected to the end of the second dome away from the second ring frame, and the other end is fixedly connected to the end of the second ring frame. The second folding ring fixedly connected to the basin frame.

Further, the basin frame includes a support frame connected with the third diaphragm, a bottom cover provided on a side of the support frame close to the second diaphragm, and a bottom cover provided on the support frame The top cover on one side close to the first diaphragm, the first diaphragm is arranged between the top cover and the support frame, the magnetic circuit system is fixedly connected to the top cover, and the top The cover, the first diaphragm, and the magnetic circuit system together form a first front cavity, one side of the top cover is provided with a first sound hole communicating with the first front cavity, and the second diaphragm Is arranged between the bottom cover and the support frame, the support frame, the second diaphragm, the second ring frame main body and the third diaphragm enclose a second front cavity, and the support One side of the frame is provided with a second sound hole communicating with the second front cavity, the first ring frame body is provided with a vent hole, the bottom cover, the second diaphragm, and the second ring frame body , The third diaphragm, the support frame, the first diaphragm and the magnetic circuit system are enclosed to form a back cavity.

Beneficial effect

The beneficial effects of the utility model are:

The first diaphragm, the second diaphragm, and the third diaphragm are connected to the voice coil through the first ring frame and the second ring frame, and the connecting plate, the limit plate, the second flange and the first flange are enclosed to form a glue groove , The glue is filled in the glue tank to seal and fix the glue between the connecting plate and the limiting plate, between the second flange and the first flange, so that the second ring frame and the first ring frame are connected more stably, and the second ring frame is more stable. The overall vibration stability of the second diaphragm, the first diaphragm, the third diaphragm, the voice coil, the second ring frame and the first ring frame improves the sound performance of the speaker.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the speaker of the utility model;

Figure 2 is a schematic cross-sectional view of the speaker of the utility model in the direction of A-A in Figure 1;

Figure 3 is a schematic diagram of the three-dimensional exploded structure of the speaker of the present invention;

Figure 4 is a schematic diagram of the assembly of the first ring frame, the second ring frame and the flexible circuit board in the utility model;

Fig. 5 is an enlarged schematic diagram of detail B in Fig. 4.

Embodiments of the present invention

The present utility model will be further explained below in conjunction with the drawings and embodiments.

As shown in Figures 1-5, the speaker includes a basin frame with a receiving space 1, a magnetic circuit system 2 housed in the receiving space and having a magnetic gap 100, and a magnetic circuit system 2 housed in the receiving space and powered by the magnetic circuit system. 2 Vibration system 3 for driving vibration. The vibration system 3 includes a first diaphragm 34 arranged between the basin frame 1 and the magnetic circuit system 2 and a first diaphragm 34 arranged opposite to the first diaphragm 34. The second diaphragm 33, the third diaphragm 35 arranged between the first diaphragm 34 and the second diaphragm 33, the voice coil 31 inserted into the magnetic gap 100, and the third diaphragm 35 arranged on the first diaphragm. The first ring frame 322 between the diaphragm 34 and the third diaphragm 35 and the second ring frame 321 provided between the second diaphragm 33 and the third diaphragm 35; the first ring The frame 322 is erected on the second ring frame 321; the second ring frame 321 includes a second ring frame body 3211 vibrating along the vibration direction of the voice coil 31 and a second ring frame body 3211 connected to the second ring frame body 3211. The connecting plate 3212 between the voice coil 31; the first ring frame 322 includes a first ring frame body 3221 vibrating along the vibration direction of the voice coil 31, and a first ring frame body 3221 arranged on the first ring frame body 3221 and the connecting plate 3212 The limiting plate 3222 between; the connecting plate 3212 and the limiting plate 3222 are fixedly connected, one side of the connecting plate 3212 extends in the direction close to the first diaphragm 34 to form a first flange 3223, the limiting One side of the plate 3222 extends toward the first diaphragm 34 to form a second flange 3213, one end of the first flange 3223 abuts against one end of the second flange 3213, and the connecting plate 3212. The limiting plate 3222, the first flange 3223 and the second flange 3213 are enclosed to form a glue tank 200.

The first diaphragm 34, the second diaphragm 33, and the third diaphragm 35 are connected to the voice coil 31 through the second ring frame 321 and the first ring frame 322. The second ring frame body 3211 of the second ring frame 321 is connected to the first ring frame 321. The first ring frame body 3221 of the ring frame 322 is fixedly connected. The connecting plate 3212, the limit plate 3222, the second flange 3213 and the first flange 3223 are enclosed to form a glue tank 200. The glue tank 200 is filled with glue to make the connection Between the plate 3212 and the limiting plate 3222, the second flange 3213 and the first flange 3223 are sealed and fixed with glue, so that the second ring frame 321 and the first ring frame 322 are connected more stably, thereby improving the second diaphragm 33 The overall vibration stability of the first diaphragm 34, the third diaphragm 35, the voice coil 31, the second annular frame 321 and the first annular frame 322 improves the sound performance of the speaker.

The basin frame 1 includes a supporting frame 11 connected to the third diaphragm 35, a bottom cover 12 covering the side of the supporting frame 11 close to the second diaphragm 33, and a bottom cover 12 covering the supporting frame 11 close to the first diaphragm 34 On the top cover 13, the first diaphragm 34 is arranged between the top cover 13 and the support frame 11. The magnetic circuit system 2 is fixedly connected to the top cover 13, and the top cover 13, the first diaphragm 34 and the magnetic circuit system 2 The first front cavity 600 is formed by enclosing. One side of the top cover 13 is provided with a first sound hole 121 communicating with the first front cavity 600. The second diaphragm 33 is disposed between the bottom cover 12 and the support frame 11, and the support frame 11 , The second diaphragm 33, the frame 32 and the third diaphragm 35 are enclosed to form a second front cavity 500, one side of the support frame 11 is provided with a second sound hole 111 communicating with the second front cavity 500, and the first ring-shaped frame body 3221 defines a vent hole 32212, and the bottom cover 12, the second diaphragm 33, the second annular skeleton body 3211, the third diaphragm 35, the support frame 11, the first diaphragm 34 and the magnetic circuit system 2 together form a rear cavity 700.

The magnetic circuit system 2 includes a second magnetic yoke 21 fixedly connected to the top cover 13, a second magnetic steel group 22 fixedly connected to the second magnetic yoke 21, and a second magnetic steel group 22 fixed to the second magnetic steel group 22 away from the second magnetic The first magnetic yoke 24 on the side of the yoke 21 and the first magnetic steel group 23 fixed between the second magnetic yoke 21 and the first magnetic yoke 24 and arranged on the periphery of the second magnetic steel group 22, with a magnetic gap of 100 The second magnetic steel group 22 and the first magnetic steel group 23 are formed at intervals, and the voice coil 31 is sleeved outside the second magnetic steel group 22 and contained in the magnetic gap 100.

The end of the second annular frame body 3211 that is close to the second diaphragm 33 extends toward the voice coil 31 to form a second connecting edge 3214, and the side of the second connecting edge 3214 that is close to the voice coil 31 extends toward the first annular frame 322 to form a second The connecting piece 3215 is formed by extending the connecting plate 3212 from the end of the second connecting piece 3215 close to the first ring frame 322; the end of the first ring frame body 3221 close to the second ring frame 321 extends toward the voice coil 31 to form a first connecting edge 3224, The limiting plate 3222 includes a first connecting piece 32221 extending from the side of the first connecting edge 3224 close to the voice coil 31 toward the second annular frame 321, and a first connecting piece 32221 from the end of the first connecting piece 32221 close to the second annular frame 321. A fixing piece 32222 formed by the extension of the ring 31, the second flange 3213 extends from the fixing piece 32222 and the other end of the second flange 3213 abuts against the first connecting piece 32221. Specifically, in this embodiment, the second annular skeleton body 3211 and the first annular skeleton body 3221 are annular structures arranged around the voice coil 31. Correspondingly, the second connecting edge 3214 and the first connecting edge 3224 are also annular. The structure can improve the structural strength of the second ring frame 321 and the first ring frame 322 on the one hand, and on the other hand can increase the connection area, thereby improving the reliability of the connection with the structure of the second connecting edge 3214 or the first connecting edge 3224, There are four connecting plates 3212 and limiting plates 3222. The connecting plates 3212 and the limiting plates 3222 correspond one to one. The first magnetic steel group 23 has a gap for the connecting plate 3212 to extend to connect to the voice coil 31, and the connecting plate 3212 Extending away from the end of the second annular frame body 3211 to form a connecting leg 32112 fixedly connected to the voice coil 31, the connecting leg 32112 is a structure adapted to the voice coil 31. In this embodiment, the connecting legs located at both ends of the voice coil 31 in the length direction 32112 is connected as a whole, that is, the connecting legs 32112 at the same end in the length direction of the voice coil 31 are connected as one body, so that the connection between the connecting legs 32112 and the voice coil 31 is more stable and firm. The second flange 3213 includes the substrate 32131 close to the voice coil 31 and the connection As for the extension piece 32132 on the side of the substrate 32131 close to the first flange 3223, the height of the substrate 32131 in the vibration direction of the voice coil 31 is greater than the height of the extension piece 32132 in the vibration direction of the voice coil 31. In some embodiments, the connecting plate 3212 and the limiting plate 3222 may be provided in two groups, three groups, five groups, six groups, etc., respectively, as long as the second ring frame 321 and the voice coil 31 can be connected stably. In some embodiments, the adjacent connecting legs 32112 can be connected as a whole. Therefore, the connecting legs 32112 are combined into a ring structure adapted to the voice coil 31, which further improves the reliability of the connection between the connecting legs 32112 and the voice coil 31. .

The vibration system 3 also includes a flexible circuit board 36 arranged between the second connecting edge 3214 and the second diaphragm 33 and electrically connected to the voice coil 31. The connecting plate 3212 is provided with an escape hole 32121, and the lead of the voice coil 31 passes through the escape hole 32121. It is electrically connected to the flexible circuit board 36. On the one hand, when the glue tank 200 is filled with glue, the glue can flow from the avoiding hole 32121 into the first bonding gap 400, and after the glue is cured, the bonding between the flexible circuit board 36 and the connecting board 3212 can be stabilized; On the one hand, the lead of the voice coil 31 is electrically connected to the pad on the flexible circuit board 36 through the avoiding hole 32121, and the second flange 3213 and the first flange 3223 can form a guiding effect on the lead of the voice coil 31, that is, in the voice coil During the vibration process of 31, the lead wire of the voice coil 31 can be effectively protected, and the potential risk of disconnection and failure caused by the lead wire of the voice coil 31 being shaken during the vibration process can be reduced. The other end of the flexible circuit board 36 is fixed between the support frame 11 and the bottom cover 12.

The end of the second ring frame main body 3211 that is close to the first ring frame 322 extends in a direction away from the voice coil 31 to form a second extension edge 32111, and one end of the third diaphragm 35 is fixed between the second extension edge 32111 and the first connection edge 3224. between. The vibration system 3 further includes a spacer 37 arranged between the second extension edge 32111 and the first connecting edge 3224, and the third diaphragm 35 is sandwiched between the spacer 37 and the first connecting edge 3224.

The first diaphragm 34 includes a first inner folding ring 341 with one end fixedly connected to the magnetic circuit system 2 and the other end fixed to the first annular frame 322, a first dome 342 fixedly connected with one end to the first inner folding ring 341, and one end The first outer folding ring 343 is fixedly connected to the end of the first dome 342 away from the first inner folding ring 341 and the other end is fixedly connected to the basin frame 1. Specifically, in this embodiment, the end of the first ring-shaped frame body 3221 away from the second ring-shaped frame body 3211 extends in a direction away from the voice coil 31 to form a first extension edge 32211, and one end of the first inner folding ring 341 is fixed to the second ring frame body 3211. Between the two magnetic yokes 21 and the first magnetic steel group 23, the other end of the first inner folding ring 341 is fixed to the first extension edge 32211, and one end of the first outer folding ring 343 is fixed to the support frame 11 and the top cover 13 Cover the joint. In some embodiments, the first diaphragm 34 may also have a structure such as a sound diaphragm and a dome in the second diaphragm 33, as long as it can achieve a sound effect, and it is not limited herein.

The second diaphragm 33 includes a second dome 331 fixedly connected to the second ring frame 321 at one end, and a second dome 331 fixedly connected to the end of the second dome 331 away from the second ring frame 321 at one end and fixedly connected to the basin frame 1 at the other end. Two fold ring 332. Specifically, in this embodiment, the second dome 331 is fixed on the side of the flexible circuit board 36 away from the second annular skeleton body 3211, and the end of the second folding ring 332 away from the second dome 331 is fixed on the flexible circuit board 36 and Between the bottom cover 12. In some embodiments, the second diaphragm 33 may not be in the form of a sound diaphragm and a dome, or may be in the form of two sound diaphragms and a dome, as long as it has a structure that can achieve the sound effect. This is not a limitation.

The above are only the embodiments of the present utility model. It should be pointed out here 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 all belong to The scope of protection of the utility model.

Claims

A speaker includes a basin frame with a receiving space, a magnetic circuit system housed in the receiving space and having a magnetic gap, and a vibration system housed in the receiving space and driven by the magnetic circuit system to vibrate. The vibration system includes a first diaphragm arranged between the basin frame and the magnetic circuit system, a second diaphragm arranged opposite to the first diaphragm, and a second diaphragm arranged between the first diaphragm and the magnetic circuit system. The third diaphragm between the second diaphragm, the voice coil inserted into the magnetic gap, the first annular skeleton provided between the first diaphragm and the third diaphragm, and the A second ring frame between the second diaphragm and the third diaphragm; the first ring frame is erected on the second ring frame; the second ring frame includes a vibrating direction along the voice coil A second annular skeleton body and a connecting plate connected between the second annular skeleton body and the voice coil; the first annular skeleton includes a first annular skeleton body vibrating along the vibration direction of the voice coil and a The limiting plate between the first annular frame body and the connecting plate; the connecting plate and the limiting plate are fixedly connected, characterized in that:

One side of the connecting plate extends in a direction close to the first diaphragm to form a first flanging, and one side of the limiting plate extends in a direction close to the first diaphragm to form a second flanging, so One end of the first flanging abuts against one end of the second flanging, and the connecting plate, the limiting plate, the first flanging and the second flanging are enclosed to form a glue groove.
The speaker according to claim 1, wherein the end of the first annular skeleton body close to the second annular skeleton extends toward the voice coil to form a first connecting edge, and the limiting plate includes The side of the first connecting edge that is close to the voice coil extends in a direction close to the second annular frame to form a first connecting piece and extends from the end of the first connecting piece that is close to the second annular frame toward the voice coil Formed fixing piece, the second flange extends from the fixing piece and the other end of the second flange abuts against the first connecting piece;

The end of the second annular skeleton body close to the second diaphragm extends toward the voice coil to form a second connecting edge, and the side of the second connecting edge close to the voice coil faces toward the side close to the first annular skeleton The direction extends to form a second connecting piece, and the connecting plate is formed by extending from the end of the second connecting piece close to the first annular skeleton.
The speaker according to claim 2, wherein the vibration system further comprises a flexible circuit board arranged between the second connecting edge and the second diaphragm and electrically connected to the voice coil, so The connecting board is provided with an escape hole, and the lead wire of the voice coil is electrically connected to the flexible circuit board through the escape hole.
The loudspeaker according to claim 2, wherein the end of the second annular skeleton body close to the first annular skeleton extends in a direction away from the voice coil to form a second extension edge, and the third diaphragm One end is fixed between the second extending edge and the first connecting edge.
The speaker according to claim 4, wherein the vibration system further comprises a spacer arranged between the second extension edge and the first connection edge, and the third diaphragm is sandwiched between the second extension edge and the first connection edge. Between the gasket and the first connecting edge.
The speaker according to claim 1, wherein the second flange comprises a substrate close to the voice coil and an extension piece connected to the substrate close to the side of the first flange, the The height of the substrate in the vibration direction of the voice coil is greater than the height of the extension piece in the vibration direction of the voice coil.
The loudspeaker according to claim 1, wherein an end of the connecting plate away from the main body of the second annular frame extends to form a connecting leg fixedly connected to the voice coil.
The loudspeaker according to claim 1, wherein the first diaphragm includes a first inner folding ring with one end fixedly connected to the magnetic circuit system and the other end fixed to the first ring frame, and one end connected to the first inner folding ring. A first dome fixedly connected to the first inner fold ring and a first outer fold ring whose one end is fixedly connected to the end of the first dome away from the first inner fold ring and the other end is fixedly connected to the basin frame .
The speaker according to claim 1, wherein the second diaphragm includes a second dome fixedly connected to the second ring frame at one end, and a second dome with one end connected to the second dome away from the second dome. A second folding ring whose end of the ring frame is fixedly connected and the other end is fixedly connected with the basin frame.
The loudspeaker according to claim 1, wherein the basin frame comprises a support frame connected to the third diaphragm, and a bottom covering a side of the support frame close to the second diaphragm. The cover and the top cover arranged on the side of the supporting frame close to the first diaphragm, the first diaphragm being arranged between the top cover and the supporting frame, the magnetic circuit system and The top cover is fixedly connected, the top cover, the first diaphragm and the magnetic circuit system are enclosed to form a first front cavity, and one side of the top cover is provided with a first front cavity communicating with the first front cavity. A sound hole, the second diaphragm is arranged between the bottom cover and the support frame, the support frame, the second diaphragm, the second ring frame main body and the third diaphragm Enclosed to form a second front cavity, one side of the support frame is provided with a second sound hole communicating with the second front cavity, the first ring-shaped frame body is provided with a vent hole, the bottom cover, the second The diaphragm, the second annular skeleton main body, the third diaphragm, the support frame, the first diaphragm and the magnetic circuit system together form a back cavity.