WO2021134266A1

WO2021134266A1 - Loudspeaker

Info

Publication number: WO2021134266A1
Application number: PCT/CN2019/130046
Authority: WO
Inventors: 王程良
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: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-07-08

Abstract

The present application provides a loudspeaker, comprising a sound production single body and a loudspeaker box used for accommodating the sound production single body. The loudspeaker box comprises: an upper cover; a lower cover, the lower cover and the upper cover being mounted in a matching mode to jointly define an accommodating space; and an annular supporting step portion formed by the upper cover extending towards the lower cover. The sound production single body comprises a basin stand; the basin stand is supported on the supporting step portion; the basin stand comprises a first supporting surface abutting against the supporting step portion, a side wall extending from the outer peripheral edge of the first supporting surface to the lower cover, and a second supporting surface formed by the inner peripheral edge of the first supporting surface extending towards the upper cover; a first adhesive layer is provided between the first supporting surface and the supporting step portion, and a second adhesive layer is provided between the side wall and the supporting step portion. Compared with the prior art, the loudspeaker of the present application is better in waterproof performance and better in acoustic performance.

Description

speaker

Technical field

This application relates to the field of sound and electricity, and in particular to a loudspeaker.

Background technique

With the development of science and technology, people's requirements for the functionality of products are getting stronger and stronger. For speakers, not only are they required to have good acoustic performance, but they also have requirements for waterproof performance.

The related art loudspeaker includes an upper cover, a lower cover assembled with the upper cover to form an accommodation space, and a sounding unit accommodated in the accommodation space. The sound-producing monomer is fixed with the speaker box through glue to form a waterproof sealing structure.

However, in the related art, glue is applied on the four sides of the front surface of the sound-producing monomer to form a circle of glue. Although the waterproof effect is good, the width of the step surface of the supporting wall is required to be large, which is affected by the molding of the mold, resulting in the sound channel The height is greatly affected, and the sound is not smooth, which affects the acoustic performance; at the same time, glue on the side of the sound unit, although the sound height of the sound guide channel can be increased, the sound is smooth, but the glue gap is at least 0.70mm Above, the requirements for the length and width of the speaker box are relatively high.

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

technical problem

The purpose of the present application is to provide a loudspeaker that can seal and waterproof the sound-producing monomer while not affecting the acoustic performance of the loudspeaker.

Technical solutions

The technical solution of the present application is as follows: a loudspeaker comprising a sound emitting unit and a speaker box for accommodating the sound emitting unit, the speaker box comprising an upper cover, and a lower part that is matched and installed with the upper cover to form a receiving space. Cover, an annular support step formed by the upper cover extending in the direction of the lower cover, the sound-emitting unit includes a vibration system for vibrating and sounding, a magnetic circuit system for controlling the vibration of the vibration system, and a accommodating The basin frame of the vibration system and the magnetic circuit system, the basin frame is supported on the support step portion, the basin frame includes a first support surface abutting the support step portion, and is defined by the outer periphery of the first support surface A side wall extending in the direction of the lower cover and a second support surface formed from the inner peripheral edge of the first support surface in the direction of the upper cover, and a second support surface is provided between the first support surface and the support step portion There is a first glue layer, and a second glue layer is arranged between the side wall and the supporting step portion.

Preferably, the vibration system includes a diaphragm for vibrating and sounding, and the diaphragm is bonded to the basin frame.

Preferably, the diaphragm includes a middle spherical top, a folding ring portion extending from the spherical top to the circumferential side, and a folding ring portion extending from the folding ring portion and sequentially abutting on the second support surface and the first support The extension part on the surface, the extension part is glued and fixed with the first supporting surface and the second supporting surface.

Preferably, the projected area of the first support surface and the second support surface in the direction of the upper cover is equal to the projected area of the basin frame in the direction of the upper cover.

Preferably, the width of the first supporting surface is greater than or equal to the width of the second supporting surface.

Preferably, the second adhesive layer is connected to the first adhesive layer at the junction of the side wall and the first supporting surface.

Preferably, the supporting step portion includes a barrier wall arranged opposite to the side wall and bonded to the side wall through the second adhesive layer, and is connected to the outer periphery of the barrier wall at an obtuse angle by the barrier wall. A support wall extending from the outer periphery of the wall in the direction of the lower cover, and a third glue layer is arranged between the side wall and the support wall.

Preferably, the sound-producing monomer is supported on the supporting step portion and the upper cover is spaced apart to form a front sound cavity.

Preferably, the outer side of the sound-producing monomer, the outer side of the supporting step portion, the lower cover and the upper cover jointly form a rear acoustic cavity.

Preferably, the first adhesive layer is a fixed sealant.

Preferably, the second adhesive layer is a fixed sealant.

Beneficial effect

The beneficial effects of this application are:

Compared with the related art, the speaker provided by the present application is provided with a first adhesive layer between the first supporting surface and the supporting step, so that the sound emitting monomer and the speaker in the speaker In the sealed connection of the box, a second adhesive layer is further provided between the side wall and the supporting step to strengthen the stable support of the speaker box to the sound-producing monomer while simultaneously connecting the sound-producing monomer and The external sealing and isolation increase the waterproofness of the speaker.

Further, the diaphragm is bonded to the first supporting surface and the second supporting surface, which has a simple structure, is convenient for processing, and strengthens the connection between the basin frame and the diaphragm, and has better stability and better sealing performance. it is good.

Further, the sound-emitting monomer is fixedly connected to the speaker box through the first adhesive layer, so that the width of the supporting step portion can be appropriately reduced, the height of the sound channel is increased, and the acoustic performance of the speaker is better. .

Further, a second adhesive layer is provided between the side wall and the supporting step, and there is no need to make up the glue on the side of the sounding monomer, and the side of the sounding monomer does not need a 0.7mm glue space, which can effectively reduce The space requirement of the speaker box.

Further, the second glue layer is connected to the first glue layer, which increases the sealing performance of the glue layer and also makes the connection between the sound-producing monomer and the speaker box more stable.

Further, the third adhesive layer strengthens the fixed connection between the sound-producing monomer and the speaker box, and at the same time seals and isolates the periphery of the sound-producing monomer from the outside, thereby increasing the waterproofness of the speaker.

Further, the sound-producing monomer and the speaker box are fixedly connected by an adhesive layer, no other parts are added, and the installation is simple and easy to operate.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

FIG. 1 is a schematic diagram of a three-dimensional structure of a speaker provided by an embodiment of the present application;

Fig. 2 is a three-dimensional exploded schematic diagram of the speaker shown in Fig. 1;

3 is a schematic diagram of the three-dimensional structure of the upper cover of the speaker box of the speaker shown in FIG. 1;

4 is a schematic diagram of the three-dimensional structure of the basin frame of the sound emitting unit of the speaker shown in FIG. 1;

5 is a schematic diagram of the three-dimensional structure of the diaphragm of the sound-producing monomer of the speaker shown in FIG. 1;

Fig. 6 is a cross-sectional view of the loudspeaker shown along the line A-A in Fig. 1;

Fig. 7 is a partial enlarged view of a cross-sectional view of the speaker shown in Fig. 6.

Explanation of symbols for main components: speaker 1; sounding unit 10; vibration system 11; diaphragm 111; dome 111a; folding ring 111b; extension 111c; magnetic circuit system 12; basin 13; first support surface 131; side Wall 132; second supporting surface 133; speaker box 20; upper cover 21; lower cover 22; supporting step 23; first glue layer 30; second glue layer 40.

Embodiments of the present invention

The application will be further described below in conjunction with the drawings and implementations.

It should be noted that the terms "first", "second", and "third" in the specification and claims of the application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific sequence. In addition, the term "including" and any variations of them are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

All the directional indications (such as up, down, left, right, front, back, inside, outside, top, bottom...) in the embodiments of this application are only used to explain in a certain posture (as shown in the figure) The relative positional relationship between the components, etc., if the specific posture changes, the directional indication will also change accordingly. When an element is referred to as being "fixed on" or "disposed on" another element, the element may be directly on the other element or a centering element may also be present at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time.

Please refer to Figures 1-7, Figure 1 is a schematic diagram of a three-dimensional structure of a speaker provided by an embodiment of the present application; Figure 2 is a perspective exploded schematic diagram of the speaker shown in Figure 1; Figure 3 is a perspective view of the speaker box of the speaker shown in Figure 1 The three-dimensional structure diagram of the upper cover; FIG. 4 is the three-dimensional structure diagram of the basin frame of the sound-producing unit of the speaker shown in FIG. 1; FIG. 5 is the three-dimensional structure diagram of the diaphragm of the sound-producing unit of the speaker shown in FIG. 1; A cross-sectional view of the loudspeaker shown in the middle line AA; FIG. 7 is a partial enlarged view of the cross-sectional view of the loudspeaker shown in FIG. 6.

The present application provides a loudspeaker 1, including a sound-emitting unit 10 and a speaker box 20 for accommodating the sound-emitting unit 10. The sound-emitting unit 10 includes a vibration system 11 for vibrating and sounding, and a magnetic circuit system for controlling the vibration of the vibration system 11 12 and a basin 13 for accommodating the vibration system 11 and the magnetic circuit system 12. The vibration system 11 includes a diaphragm 111 and a voice coil (not shown in the figure), and the magnetic circuit system 12 includes a magnet (not shown in the figure) and pole pieces ( Not shown in the figure), magnets (not shown in the figure) and pole pieces (not shown in the figure) form a magnetic field. After the voice coil (not shown in the figure) receives an electrical signal, it vibrates under the action of the magnetic field. , So as to drive the diaphragm 111 to vibrate and produce sound. The speaker box 20 includes an upper cover 21, a lower cover 22 that is matched and installed with the upper cover 21 to form a containing space, and an annular supporting step formed by the upper cover 21 extending in the direction of the lower cover 22 23. The sound-emitting unit 10 is supported by the support step portion 23 through the basin frame 13 to realize the support connection with the speaker box 20. The sound-emitting unit 10 is supported on the support step portion 23 and the upper cover 21 is spaced to form a front sound cavity for sound production. The outside of the monomer 10 and the outside of the supporting step 23 together with the lower cover 22 and the upper cover 21 form a rear acoustic cavity, which is used to improve the low-frequency acoustic performance and make the acoustic performance of the speaker 1 better.

In this embodiment, the basin frame 13 is ring-shaped, the vibration system 11 and the magnetic circuit system 12 are housed at the central axis of the basin frame 13, and the diaphragm 111 of the vibration system 11 is connected to one end of the basin frame 13 and covers the basin frame 13. On the end surface of one end, the diaphragm 111 and the basin frame 13 are glued and fixed.

Specifically, the basin frame 13 includes a first supporting surface 131 abutting against the supporting step portion 23, a side wall 132 connected to the outer periphery of the first supporting surface 131 and extending from the outer periphery of the first supporting surface 131 in the direction of the lower cover 22, and Connected to the inner periphery of the first support surface 131, the second support surface 133 is formed by the inner periphery of the first support surface 131 extending in the direction of the upper cover 21. The diaphragm 111 includes a middle dome 111a and a folding ring extending from the dome 111a to the peripheral side. The portion 111b and the self-folding ring portion 111b extend and sequentially abut on the extension portion 111c on the second support surface 133 and the first support surface 131. The extension portion 111c is glued to the first support surface 131 and the second support surface 133 by glueing. fixed. In another embodiment, in order to make the fixation of the diaphragm 111 and the basin frame 13 more firm, it is also possible to apply glue on the connecting surface of the first supporting surface 131 and the second supporting surface 133 to bond the diaphragm to the connecting surface. .

Further, the projected area of the first support surface 131 and the second support surface 133 in the direction of the upper cover 21 is equal to the projected area of the basin frame 13 in the direction of the upper cover 21, so that the diaphragm 111 can be completely bonded to the basin frame 13, and the speaker 1 is vibrating During the sound production process, excessive vibration will not cause the connection between the diaphragm 111 and the frame 13 to be torn, which enhances the stability of the speaker 1. In addition, the width of the first supporting surface 131 is greater than or equal to the width of the second supporting surface 133. While the first supporting surface 131 is used as a pallet to fix and support the sound emitting unit 10, with the auxiliary support of the second supporting surface 133, the The width of a supporting surface 131 is required to be reduced during the injection molding process, which can save the space of the speaker box 20 and reduce the impact on the sound output channel.

It should be noted that in this embodiment, a first adhesive layer 30 is provided between the first supporting surface 131 and the supporting step portion 23, and a second adhesive layer 40 is provided between the side wall 132 and the supporting step portion 23. A glue layer 30 fixes the sounding monomer 10 on the supporting step portion 23 in the speaker box 20, and at the same time forms a sealing layer between the sounding monomer 10 and the supporting step portion 23 to play a waterproof role. In addition, the second glue layer 40 The fixed connection between the sounding monomer 10 and the speaker box 20 is further strengthened, and a sealing layer is formed between the sounding monomer 10 and the side wall 132 to completely seal the connection between the sounding monomer 10 and the supporting step 23, Strengthen the waterproof effect.

In addition, a first adhesive layer 30 is provided between the first supporting surface 131 and the supporting step portion 23. The first adhesive layer 30 forms a fixed connection between the supporting step portion 23 and the extension portion 111c, so that the supporting step portion 23 abuts against the vibration The membrane 111 realizes the fixation and sealing of the speaker box 20 and the sounding monomer 10. In order to achieve better waterproof effect and stability of the speaker 1, the speaker 1 further includes a second adhesive layer 40 arranged between the side wall 132 and the supporting step portion 23, and the supporting step portion 23 and the basin frame are formed by the second adhesive layer 40 13 is connected, through the second adhesive layer 40, the sound-producing monomer 10 can be sealed and isolated from the outside, and at the same time, the fixing of the sound-producing monomer 10 is further strengthened, and the stability of the speaker 1 is increased, and the second adhesive layer 40 is on the side. The connection between the wall 132 and the first supporting surface 131 is connected to the first adhesive layer 30 as a whole to make the adhesive layer stronger, so that the width of the supporting step portion 23 can be reduced during injection molding, and the space of the speaker box 20 can be saved. , And reduce the impact on the sound channel, and there is no gap between the first glue layer 30 and the second glue layer 40, and the waterproof and sealing performance is better. In this embodiment, the first adhesive layer 30 and the second adhesive layer 40 are both fixed sealants.

In another embodiment, the supporting step portion 23 includes a blocking wall 231 disposed opposite to the side wall 132 and bonded to the side wall 132 by the second adhesive layer 40, and is connected to the outer periphery of the blocking wall 231 at an obtuse angle by the blocking wall 231. The outer periphery of the supporting wall 232 extending in the direction of the lower cover 22 is provided with a third adhesive layer 50 between the side wall 132 and the supporting wall 232. The third adhesive layer 50 strengthens the fixed connection between the sound emitting unit 10 and the speaker box 20, and at the same time seals and isolates the periphery of the sound emitting unit 10 from the outside, thereby increasing the waterproofness of the speaker 1.

The beneficial effects of this application are:

Compared with the related art, the speaker 1 provided in the present application is provided with a first adhesive layer 30 between the first supporting surface 131 and the supporting step portion 23 to realize the sealing of the sound emitting monomer 10 and the speaker box 20 in the speaker 1 The second adhesive layer 40 is further provided between the side wall 132 and the supporting step portion 23 to strengthen the stable support of the speaker box 20 to the sound emitting unit 10 while sealing and isolating the sound emitting unit 10 from the outside, thereby increasing the speaker 1 water resistance.

Furthermore, the diaphragm 111 is bonded to the first supporting surface 131 and the second supporting surface 133, which has a simple structure and is easy to process, and strengthens the connection between the basin frame 13 and the diaphragm 111, which has better stability and better sealing performance. .

Furthermore, the sound-emitting monomer 10 is fixedly connected to the speaker box 20 through the first adhesive layer 30, so that the width of the supporting step portion 23 can be appropriately reduced, the height of the sound channel is increased, and the acoustic performance of the speaker 1 is better.

Furthermore, a second adhesive layer 40 is provided between the side wall 132 and the supporting step portion 23. There is no need to make up the glue on the side of the sounding unit 10, and the side of the sounding unit 10 does not need a 0.7mm glue space, which can effectively reduce the speaker box 20. Space requirements.

Furthermore, the second glue layer 40 is connected to the first glue layer 30, which increases the sealing performance of the glue layer and also makes the connection between the sound emitting monomer 10 and the speaker box 20 more stable.

Further, the third adhesive layer 50 strengthens the fixed connection between the sound emitting unit 10 and the speaker box 20, and at the same time seals and isolates the periphery of the sound emitting unit 10 from the outside, thereby increasing the waterproofness of the speaker 1.

Further, the sound-emitting unit 10 and the speaker box 20 are fixedly connected by an adhesive layer, no other parts are added, and the installation is simple and easy to operate.

The above are only the implementation manners of this application. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of this application, but these all belong to this application. The scope of protection.

Claims

1. A loudspeaker comprising a sounding monomer and a speaker box for accommodating the sounding monomer, the speaker box including an upper cover, a lower cover that is matched and installed with the upper cover to form a receiving space, and is composed of The upper cover extends in the direction of the lower cover to form a ring-shaped support step portion, and the sound emitting unit includes a vibration system for vibrating and sounding, a magnetic circuit system for controlling the vibration of the vibration system, and accommodating the vibration system and the magnetic circuit The basin frame of the system, the basin frame is supported on the supporting step portion, characterized in that the basin frame includes a first supporting surface abutting on the supporting step portion, and connected to the outer periphery of the first supporting surface A side wall extending from the outer periphery of the first support surface in the direction of the lower cover, and a side wall connected to the inner periphery of the first support surface and formed by the inner periphery of the first support surface extending in the direction of the upper cover The second supporting surface is provided with a first adhesive layer between the first supporting surface and the supporting step portion, and a second adhesive layer is provided between the side wall and the supporting step portion.

2. The loudspeaker according to claim 1, wherein the vibration system comprises a diaphragm for vibrating and sounding, and the diaphragm is bonded to the basin frame.

3. The speaker according to claim 2, wherein the diaphragm includes a middle dome, a folding ring part extending from the dome to the circumferential side, and a folding ring part extending from the folding ring part and abutting on the The second supporting surface and the extension portion on the first supporting surface, and the extension portion is glued and fixed to the first supporting surface and the second supporting surface.

4. The loudspeaker according to claim 1, wherein the projected area of the first support surface and the second support surface in the direction of the upper cover is equal to the projected area of the basin frame in the direction of the upper cover.

5. The speaker according to claim 1, wherein the width of the first supporting surface is greater than or equal to the width of the second supporting surface.

6. The loudspeaker according to claim 1, wherein the second adhesive layer is connected to the first adhesive layer at the junction of the side wall and the first supporting surface.

7. The speaker according to claim 1, wherein the supporting step portion comprises a retaining wall arranged opposite to the side wall and bonded to the side wall through the second adhesive layer, and The outer peripheral edge of the barrier wall is connected at an obtuse angle to the support wall extending from the outer peripheral edge of the barrier wall in the direction of the lower cover, and a third glue layer is provided between the side wall and the support wall.

8. The loudspeaker according to claim 1, wherein the sound emitting unit is supported by the supporting step portion and the upper cover is spaced apart to form a front sound cavity.

9. The loudspeaker according to claim 1, wherein the outer side of the sound-producing unit, the outer side of the supporting step portion, the lower cover and the upper cover together form a rear acoustic cavity.

10. The loudspeaker according to claim 1, wherein the first adhesive layer and the second adhesive layer are both fixed sealant.