CN211531316U

CN211531316U - Loudspeaker box

Info

Publication number: CN211531316U
Application number: CN201922493478.3U
Authority: CN
Inventors: 王程良
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-18
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a loudspeaker box, which comprises an upper cover, a lower cover, a sounding monomer and a sealing layer, wherein the upper cover comprises an upper cover body and a supporting wall; the sounding monomer comprises a basin frame and a vibrating diaphragm which are enclosed by side walls, the side walls comprise inner side surfaces, outer side surfaces, bottom surfaces, top surfaces and first steps which are formed by the top surfaces in a concave mode and connected with the outer side surfaces, and each first step comprises a step bottom wall and a step side wall; the sound production monomer is supported on the supporting wall and enables the outer side face to be connected with the supporting wall, and the vibrating diaphragm is fixed on the top face; the supporting wall comprises a supporting wall body and a fixing part, and the fixing part is supported on the first step; the step bottom wall and the step side wall are respectively in sealing connection with the fixing portion through the sealing layer, and the portion, connected with the step bottom wall, of the outer side face is in sealing connection with the supporting wall body through the sealing layer. Compared with the prior art, the utility model discloses a preceding sound chamber space of speaker box is big, acoustic performance is excellent and the reliability is high.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to speaker box of portable electronic product.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker box for playing sound is widely applied to the current smart mobile devices.

Related art the speaker box include the upper cover, with the upper cover encloses into accommodating space's lower cover jointly, accept in sound production monomer in the accommodating space, form in accommodating space's leading the sound passageway and by the upper cover body to what the lower cover direction extended is annular supporting wall, the supporting wall is equipped with to keeping away from the step of acceping that sound production monomer formed, sound production monomer accept in the step of acceping with fixed stay in the supporting wall, sound production monomer with the upper cover interval sets up and forms preceding sound chamber, preceding sound chamber passes through the through-hole with leading the sound passageway intercommunication, it will to lead the sound passageway preceding sound chamber and external intercommunication.

However, in the speaker box according to the related art, the supporting wall is provided with the accommodating step, so that a step surface of the accommodating step fixed to the sound generating unit is wide, and thus a space between the supporting wall and the upper cover body is small, so that heights of the front cavity and the sound guide channel are limited, and a narrowest height is only 0.47mm, which affects smooth airflow. In addition, the side face of the accommodating step is fixed with the sounding monomer through glue, the glue for fixing needs to be complete in one circle of the accommodating step, the requirements on the length and the width of the loudspeaker box are high, and the gluing gap is at least more than 0.70mm, so that the front cavity space is limited, and the reliability is not high.

Therefore, there is a need to provide a new speaker box to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a preceding sound chamber space is big, acoustic performance is excellent and speaker box that the reliability is high.

In order to achieve the above object, the present invention provides a speaker box, which comprises an upper cover, a lower cover disposed on the upper cover and enclosing together an accommodating space, a sounding unit and a sealing layer accommodated in the accommodating space, wherein the upper cover comprises an upper cover body and a supporting wall extending from the upper cover body to the lower cover and surrounding the sounding unit; the sounding unit comprises a basin frame and a vibrating diaphragm which is supported and fixed on the basin frame and used for vibrating and sounding, the basin frame is annular and comprises an inner side face, an outer side face, a bottom face, a top face and an annular first step, the inner side face is arranged opposite to the inner side face, the bottom face is connected with the inner side face and the outer side face, the top face is arranged opposite to the bottom face, the annular first step is formed by the fact that the outer periphery of the top face is sunken towards the direction far away from the vibrating diaphragm, and the vibrating diaphragm is fixed on; the sound generating unit is supported on the supporting wall and enables the outer side face to be connected with the supporting wall, and the vibrating diaphragm and the upper cover body are arranged at intervals; the first step comprises a step bottom wall which is connected with the outer side face and extends in a bending way towards the direction far away from the supporting wall, and a step side wall which extends in a bending way towards the direction close to the upper cover body from the step bottom wall and is connected to the top face; the supporting wall comprises an annular supporting wall body extending from the upper cover body to the lower cover direction and a fixing part formed by the supporting wall body protruding towards the first step and matched with the first step, and the fixing part is annular and is supported on the first step; the sealing layer covers completely and is fixed in the fixed part, the step diapire with the step lateral wall respectively with the fixed part passes through the sealing layer forms sealing connection, the lateral surface connect the part of step diapire with the support wall body passes through the sealing layer forms sealing connection.

Preferably, the fixing part comprises a first wall arranged opposite to the bottom wall of the step and a second wall which is bent and extended from the first wall and arranged opposite to the side wall of the step; the sealing layer is respectively clamped between the first wall and the bottom wall of the step and between the second wall and the side wall of the step.

Preferably, the fixing part further includes a third wall connected to the second wall and extending in a direction away from the step side wall, and a fourth wall extending in a direction from the third wall toward the upper cover body, and the fourth wall is connected to one side of the support wall body close to the upper cover; the fourth wall and the step side wall are connected through the sealing layer and cover the third wall.

Preferably, a distance between the upper cover body and the sealing layer covering the third wall along the vibration direction of the diaphragm is less than or equal to a distance between the upper cover body and the diaphragm.

Preferably, the step bottom wall, the first wall and the fourth wall are arranged in parallel, and the step side wall is arranged in parallel with the second wall.

Preferably, the vibrating diaphragm extends and is respectively attached to the step bottom wall and the step side wall, and the fixing portion is used for pressing and locating the vibrating diaphragm on the step bottom wall and the step side wall respectively through the sealing layer to form sealing fixation.

Preferably, the sealing layer is glue.

Preferably, the upper cover further comprises a first opening penetrating through the upper cover body and an upper cover plate fixed on the upper cover body and completely covering the first opening, and the upper cover plate and the sounding unit are arranged oppositely.

Preferably, the upper cover plate and the upper cover body are fixed by gluing.

Preferably, the upper cover still include by the upper cover body is kept away from the free lateral direction of sound production the free direction of sound production is sunken to form the upper cover step, the upper cover step be cyclic annular and with first opening intercommunication, the upper cover apron include the apron body and by the periphery of apron body is to being close to the extension that the free direction of sound production was buckled and is extended, the apron body covers completely first opening, the extension is fixed in the upper cover step.

Compared with the prior art, the utility model discloses a loudspeaker box sets up first step through the free basin frame of sound production, and first step includes step diapire and step lateral wall, sets up the fixed part that matches with first step at the support wall of upper cover to make step diapire and step lateral wall pass through sealing layer formation sealing connection with the fixed part respectively, the part that the step diapire was connected to the lateral surface passes through sealing layer formation sealing connection with the support wall body. The structure enables the fixed positions of the support wall and the basin frame to be far away from the upper cover relative to the related art through the first step, the volume of the front sound cavity can be obviously increased, the sound outlet channel is improved, and therefore the acoustic performance of the loudspeaker box is excellent. In addition, cover the sealing layer completely and be fixed in the fixed part for the position of beating of basin frame and support wall is not only beaten glue on two faces of first step, still is close to preceding sound chamber one side at the fixed part and all beats glue with the sound production monomer, has guaranteed the uniformity of beating glue, thereby makes the uniformity of speaker box's reliability has great promotion.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of a speaker box according to the present invention;

fig. 2 is an exploded view of a part of a three-dimensional structure of the speaker box of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view taken along section B of FIG. 3;

fig. 5 is an exploded view of a part of the upper cover of the speaker box of the present invention;

fig. 6 is a schematic view of the three-dimensional structure of the frame of the sound generating unit of the speaker box of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a speaker box 100, which includes an upper cover 1, a lower cover 2, a sound generating unit 3 and a sealing layer 4.

The upper cover 1 and the lower cover 2 together enclose a containing space 10. The upper cover 1 and the lower cover 2 can be of an integral structure or a split structure.

The upper cover 1 includes an upper cover body 11, a support wall 12, a sound guide passage 13, a first opening 14, and an upper cover plate 15.

The supporting wall 12 extends from the upper cover body 11 to the lower cover 2 and is wound around the sound generating unit 3. The support wall 12 is annular. Specifically, the support wall 12 includes a ring-shaped support wall body 121 extending from the upper cover body 11 toward the lower cover 2, and a ring-shaped fixing portion 122 formed by protruding the support wall body 121 toward the first step 315 of the sound generating unit 3. The support wall 12 is used for supporting the sound-emitting unit 3.

The sound guide channel 13 is formed in the upper cover body 11.

The first opening 14 penetrates the upper cover body 11. The first opening 14 is used for arranging the upper cover plate 15 to replace the original pure plastic structure. The glue is conveniently applied during assembly.

The upper cover plate 15 is fixed to the upper cover body 11. The upper cover plate 15 completely covers the first opening 14. The upper cover plate 15 is opposite to the sounding monomer 3.

In the present embodiment, the upper cover plate 15 is a steel sheet or a plastic sheet. The upper cover plate 15 and the upper cover body 11 are fixed by gluing. The thickness of the upper cover plate 15 can be greatly reduced, so that the volume of the accommodating space 10 is increased. Of course, the thickness and material are not limited thereto, and in principle, the thinner the better.

In this embodiment, the upper cover 1 further includes an upper cover step 16 formed by a side of the upper cover body 11 away from the sound generating unit 3 is recessed in the direction of the sound generating unit 3, and the upper cover step 16 is annular and is communicated with the first opening 14. The upper cover plate 15 includes a cover plate body 151 and an extension portion 152 extending from the periphery of the cover plate body 151 to a direction close to the sound generating unit 3. The cover body 151 completely covers the first opening 14. The extension 152 is fixed to the upper cover step 16. The extension portion 152 increases the height of the cover body 151, and this structure increases the volume of the receiving space 10.

The lower cover 2 is arranged on the upper cover 1 in a covering mode. The lower cap 2 includes a lower cap body 21 and a second opening 22 penetrating the lower cap body 21. The sounding unit 3, the lower cover body 21 and the upper cover 1 jointly enclose a rear cavity 102. The back volume 102 is used to improve the low frequency acoustic performance of the loudspeaker enclosure 100.

The sounding single body 3 is accommodated in the accommodating space 10. Specifically, the sounding unit 3 includes a frame 31, a vibrating diaphragm 32 for vibrating and sounding and fixed to the frame 31, and a magnetic circuit 33 for driving the vibrating diaphragm 32 to vibrate and sound. The magnetic circuit system 33 includes a magnetic yoke 331 fixed to the frame 31 and disposed opposite to the diaphragm 32, and the magnetic yoke 331 is fixed to the lower cover body 21 and completely covers the second opening 22.

The frame 31 is annular. The basin stand 31 comprises an inner side surface 311, an outer side surface 312 arranged opposite to the inner side surface 311, a bottom surface 313 connecting the inner side surface 311 and the outer side surface 312, and a top surface 314 arranged opposite to the bottom surface 313.

The diaphragm 32 is spaced apart from the upper cover body 11. The diaphragm 32, the support wall 12 and the upper cover 1 together define a front acoustic cavity 101, and the front acoustic cavity 101 is communicated with the outside through the sound guide channel 13. The front acoustic cavity 101 is used to improve the high frequency acoustic performance of the loudspeaker enclosure 100. In summary, the sound generating unit 3 divides the accommodating space 10 into the front sound cavity 101 and the rear cavity 102.

Preferably, the frame 31 further includes a first step 315 formed by recessing the outer periphery of the top surface 314 away from the diaphragm 32. The first step 315 is annular and connected to the outer side 312. Wherein the fixing portion 122 is formed by the support wall body 121 protruding toward the first step 315.

Specifically, the first step 315 includes a step bottom wall 3151 connected to the outer side surface 312 and extending in a bending manner in a direction away from the support wall 12, and a step side wall 3152 extending in a bending manner from the step bottom wall 3151 in a direction close to the front sound cavity 101 and connected to the top surface 314. This structure makes the fixing position of the support wall 12 and the frame 31 far away from the upper cover 1 by the first step 315, which can significantly increase the volume of the front sound cavity 101 and improve the sound outlet channel, thereby making the acoustic performance of the speaker box 100 excellent.

The sound generating unit 3 is supported by the support wall 12. In this embodiment, the fixing portion 122 is supported by the first step 315. The fixing portion 122 is matched with the first step 315. Specifically, the fixing portion 122 includes a first wall 1221 disposed opposite to the step bottom wall 3151, a second wall 1222 bent and extended from the first wall 1221 and disposed opposite to the step side wall 3152, a third wall 1223 connected to the second wall 1222 and bent and extended in a direction away from the step side wall 3152, and a fourth wall 1224 bent and extended from the third wall 1223 in a direction close to the upper cover body 11, and the fourth wall 1224 is connected to a side of the supporting wall body 121 close to the upper cover 1.

In this embodiment, the step bottom wall 3151, the first wall 1221, and the fourth wall 1224 are arranged in parallel to each other, and the step side wall 3152 is arranged in parallel to the second wall 1222. The parallel arrangement is advantageous in terms of production and assembly, and by arranging the sealing layer 4 therebetween, the sealing property is better, thereby improving the reliability of the speaker box 100.

In this embodiment, the sealing layer 4 is glue. Of course, without limitation thereto, other materials that can be waterproof and fixed are possible.

The sealing layer 4 completely covers and is fixed to the fixing portion 122.

The diaphragm 32 is fixed to the top surface 314. In this embodiment, the diaphragm 32 extends and fits on the first step 315. Specifically, the diaphragm 32 extends and is respectively attached to the step bottom wall 3151 and the step side wall 3152. The fixing portion 122 presses the diaphragm 32 to the first step 315 through the sealing layer 4 to form a sealing fixation. That is, the fixing portion 122 presses the diaphragm 32 to the step bottom wall 3151 and the step side wall 3152 through the sealing layer 4 to form a sealing fixation.

The fixing part 122 forms a sealing connection with the basin frame 31 through the sealing layer 4. Specifically, the sealing layer 4 is interposed between the fixing portion 122 and the first step 315. This structure is equivalent to a space left from the frame 31 for filling the sealing layer 4, and does not occupy the volumes of the front sound cavity 101 and the sound guide channel 13, so that the speaker box 100 has excellent acoustic performance.

Specifically, the fourth wall 1224 and the step sidewall 3152 are connected by the sealant 4 and cover the third wall 1223. The step bottom wall 3151 and the step side wall 3152 are respectively connected to the fixing portion 122 in a sealing manner through the sealing layer 4. The sealant 4 is respectively interposed between the first wall 1221 and the step bottom wall 3151, between the second wall 1222 and the step side wall 3152, and between the fourth wall 1224 and the step side wall 3152. Through fixed part 122 with beat between the first step 315 and glue, avoid single side to mend and glue, the side of sound production monomer 3 does not need 0.7 mm's the space of beating to glue, can effectively reduce right the space demand of the length and width size of speaker box 100.

The support wall 12 is connected to the outer side 312. The support wall 12 is spaced from the tub shelf 31. Specifically, the portion of the outer side surface 312 connected to the step bottom wall 3151 and the support wall body 121 form a sealing connection through the sealing layer 4. This structure makes the connection of the support wall 12 to the sound generating unit 3 more rigid, and does not occupy the volume of the front sound chamber 101, and also improves the reliability of the speaker box 100.

Preferably, the distance between the upper cover body 11 and the sealing layer 4 covering the third wall 1223 along the vibration direction of the diaphragm 32 is less than or equal to the distance between the upper cover body and the diaphragm 32. That is, the distance from the fixing portion 122 to the upper cover body 11 is greater than the distance from the top surface 314 to the upper cover body 11. So that the volume of the front sound cavity 101 can be significantly increased and the sound outlet channel can be improved, thereby making the acoustic performance of the speaker box 100 excellent.

In this embodiment, a side of the sealing layer 4 close to the front acoustic cavity 101 and a side of the diaphragm 32 close to the front acoustic cavity 101 are located on the same plane. The sealing layer 4 covers the third wall 1223 and is sandwiched between the fourth wall 1224 and the step sidewall 3152. The sinking design of the first step 315 with respect to the top surface 314, combined with the sinking design of the third wall 1223 of the fixing portion 122 with respect to the top surface 314, ensures that after the third wall 1223 is glued, the height of the glue exceeding the top surface 314 is extremely low (or even may not exceed), so that the volume of the front sound cavity 101 can be significantly increased, and the sound outlet channel is improved, thereby the acoustic performance of the speaker box 100 is excellent.

In addition, the sealing layer 4 is applied with glue on the first wall 1221 and the third wall 1223, respectively. The first wall 1221 and the fourth wall 1224 are arranged in parallel, and the structure enables the front face of the sound generating unit 3 to be sealed with two layers of glue, so that a waterproof effect is ensured, and the reliability of the loudspeaker box 100 is improved. Meanwhile, the consistency of gluing is guaranteed, and the consistency of the performance of the loudspeaker box 100 and the consistency of the reliability of the loudspeaker box 100 are greatly improved.

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

Claims

1. A loudspeaker box comprises an upper cover, a lower cover and a sound generating single body, wherein the lower cover is covered on the upper cover and jointly forms an accommodating space, and the sound generating single body is accommodated in the accommodating space; the sounding unit comprises a basin frame and a vibrating diaphragm which is supported and fixed on the basin frame and used for vibrating and sounding, the basin frame is annular and comprises an inner side surface, an outer side surface, a bottom surface and a top surface, the inner side surface is arranged opposite to the inner side surface, the bottom surface is connected with the inner side surface and the outer side surface, the top surface is arranged opposite to the bottom surface, and the vibrating diaphragm is fixed on the top surface; the sound generating unit is supported on the supporting wall and enables the outer side face to be connected with the supporting wall, and the vibrating diaphragm and the upper cover body are arranged at intervals; it is characterized in that the preparation method is characterized in that,

the basin stand further comprises a first annular step which is formed by the fact that the outer periphery of the top face is sunken towards the direction far away from the vibrating diaphragm, the first step comprises a step bottom wall which is connected with the outer side face and is bent and extended towards the direction far away from the supporting wall, and a step side wall which is bent and extended towards the direction close to the upper cover body from the step bottom wall and is connected to the top face;

the supporting wall comprises an annular supporting wall body extending from the upper cover body to the lower cover direction and a fixing part formed by the supporting wall body protruding towards the first step and matched with the first step, and the fixing part is annular and is supported on the first step;

the loudspeaker box further comprises a sealing layer which completely covers and is fixed on the fixing portion, the step bottom wall and the step side wall are respectively in sealing connection with the fixing portion through the sealing layer, and the outer side face of the part connected with the step bottom wall is in sealing connection with the supporting wall body through the sealing layer.

2. A loudspeaker enclosure according to claim 1, wherein the fixing portion comprises a first wall disposed opposite to the bottom wall of the step and a second wall extending from the first wall and disposed opposite to the side wall of the step; the sealing layer is respectively clamped between the first wall and the bottom wall of the step and between the second wall and the side wall of the step.

3. The speaker box according to claim 2, wherein the fixing portion further includes a third wall connected to the second wall and extending in a direction away from the step side wall, and a fourth wall extending in a direction from the third wall toward the upper cover body, the fourth wall being connected to a side of the support wall body near the upper cover; the fourth wall and the step side wall are connected through the sealing layer and cover the third wall.

4. A loudspeaker enclosure according to claim 3, wherein the distance of the upper cover body from the sealing layer covering the third wall in the direction of vibration of the diaphragm is smaller than or equal to the distance from the diaphragm.

5. A loudspeaker enclosure according to claim 3, wherein the stepped bottom wall, the first wall and the fourth wall are arranged parallel to each other and the stepped side wall is arranged parallel to the second wall.

6. The speaker box of claim 1, wherein the diaphragm extends and is attached to the bottom wall and the side wall of the step, and the fixing portion presses the diaphragm to the bottom wall and the side wall of the step through the sealing layer to form a sealing fixation.

7. A loudspeaker enclosure according to claim 1, wherein the sealing layer is glue.

8. The speaker box of claim 1, wherein the top cover further comprises a first opening penetrating through the top cover body and a top cover plate fixed to the top cover body and completely covering the first opening, the top cover plate being disposed opposite to the sound-generating unit.

9. A loudspeaker enclosure according to claim 8, wherein the cover plate and the cover body are secured by gluing.

10. The speaker box according to claim 8, wherein the upper cover further includes an upper cover step formed by a side of the upper cover body away from the sound generating unit being recessed in a direction of the sound generating unit, the upper cover step is annular and is communicated with the first opening, the upper cover plate includes a cover plate body and an extending portion extending from a periphery of the cover plate body to a direction close to the sound generating unit, the cover plate body completely covers the first opening, and the extending portion is fixed to the upper cover step.