Loudspeaker box

Abstract

The present invention provides a loudspeaker box, comprising a housing having an accommodating cavity and a loudspeaker unit accommodated in the housing. The housing comprises a support arm extending toward the accommodating cavity. The loudspeaker unit comprises a basket fixed to the support arm, a vibration system fixed to the basket, and a magnetic circuit system driving the vibration system to vibrate. The vibration system comprises a diaphragm fixed to the basket and a voice coil driving the diaphragm to vibrate to produce sound. The diaphragm comprises a dome, a corrugated ring spaced apart from and arranged around the dome, an outer edge spaced apart from and arranged around the corrugated ring and fixed to the basket, and a connecting portion connecting the corrugated ring and the outer edge. The housing further comprises a retaining wall spaced apart from the basket. The outer edge is adhesively fixed to the support arm. The connecting portion comprises first connecting portions arranged opposite to the retaining wall. In the loudspeaker box of the present invention, the first connecting portions are of a flat plate structure perpendicular to a vibration direction, thereby effectively avoiding the problem in the prior art of poor pure tone of loudspeaker boxes, thus improving the acoustic performance.

Description

Loudspeaker box TECHNICAL FIELD

[0001] The present application relates to the field of electro-acoustic conversion, and in particular to a loudspeaker box. BACKGROUND

[0002] In the process of rapid development of mobile phones and other portable devices, people have increasingly strong functional requirements for products, especially higher requirements for sound performance. Therefore, the electro-acoustic system needs to continuously improve the performance, and a high-quality loudspeaker box is one of the necessary conditions to achieve this higher performance sound.

[0003] The loudspeaker box of the related art has a shell of a receiving cavity and a loudspeaker unit received in the shell, the shell includes a support arm extending towards the receiving cavity, the loudspeaker unit includes a basket, a vibration system and a magnetic circuit system, the vibration system includes a diaphragm fixed to the basket and a voice coil driving the diaphragm to vibrate and sound, the diaphragm includes a dome, a folded ring spaced around the dome, an outer edge spaced around the folded ring and fixed on the basket, and a connecting portion connecting the folded ring and the outer edge, and the outer edge is glued and fixed to the support arm. The shell further includes a retaining wall spaced from the basket and located on the support arm, during assembly of the loudspeaker box, when the loudspeaker unit is mounted on the support arm, the retaining wall is used to position the loudspeaker unit, so that the loudspeaker unit is accurately assembled in the shell. However, when the outer edge is glued and fixed to the support arm with the retaining wall, due to the small spacing between the retaining wall and the outer edge, excess glue will overflow to the connecting portion, but the connecting portion of the prior art is a recessed folded ring structure, so when the glue overflows to this connecting portion, it will cause the loudspeaker box to have poor pure tone, resulting in a decline in its acoustic performance.

[0004] Therefore, it is necessary to provide a new loudspeaker box to solve the above technical problems. TECHNICAL PROBLEM

[0005] The purpose of the present application is to overcome the above technical problems, and to provide a loudspeaker box with good acoustic performance. TECHNICAL SOLUTION

[0006] To achieve the above object, a speaker box comprises a housing having a receiving cavity and a speaker unit received in the housing, the housing comprises a support arm extending towards the receiving cavity, the speaker unit is fixed on the support arm, the speaker unit comprises a basket fixed on the support arm, a vibration system fixed on the basket and a magnetic circuit system driving the vibration system to vibrate, the vibration system comprises a diaphragm fixed on the basket and a voice coil driving the diaphragm to vibrate and sound, the diaphragm comprises a dome located in the middle, a folded ring surrounding the dome, an inner edge connecting the dome and the folded ring, an outer edge surrounding the folded ring and fixed on the basket and a connecting portion connecting the folded ring and the outer edge, the housing further comprises a baffle wall spaced apart from the basket, the outer edge is adhesively fixed on the support arm, and the connecting portion comprises a first connecting portion oppositely arranged with the baffle wall, and the first connecting portion is in a flat plate structure perpendicular to the vibration direction.

[0007] Preferably, the diaphragm is in a rounded rectangular shape, the connecting portion further comprises a second connecting portion located at a corner position, a third connecting portion extending along a long axis and connecting two adjacent first connecting portions, and a fourth connecting portion extending along a short axis and connecting two adjacent first connecting portions.

[0008] Preferably, the first connecting portion and the outer edge are located in the same plane away from the surface of the basket.

[0009] Preferably, the second connecting portion, the third connecting portion and the fourth connecting portion are recessed in the vibration direction and away from the magnetic circuit system.

[0010] Preferably, the folded ring is recessed in the vibration direction and towards the magnetic circuit system.

[0011] Preferably, the width of the folded ring in the direction perpendicular to the vibration direction and parallel to the long axis or the short axis is greater than the width of the connecting portion in the direction perpendicular to the vibration direction and parallel to the long axis or the short axis.

[0012] Preferably, the outer edge comprises a bottom portion adhesively fixed on the support arm, a first side wall bent and extending from the bottom portion towards the baffle wall in the direction parallel to the vibration direction and away from the edge portion, and a second side wall bent and extending from the bottom portion and the connecting edge of the first connecting portion in the direction parallel to the vibration direction and away from the edge portion.

[0013] Preferably, the height of the first side wall in the vibration direction is higher than the height of the second side wall in the vibration direction. Advantages

[0014] Compared with the related art, the loudspeaker box provided by the present application comprises a shell with a receiving cavity and a loudspeaker unit received in the shell, the shell comprises a support arm extending towards the receiving cavity, the loudspeaker unit is fixed on the support arm, the loudspeaker unit comprises a basket fixed on the support arm, a vibration system fixed on the basket, the vibration system comprises a diaphragm fixed on the basket, the diaphragm comprises a dome in the middle, a folded ring surrounding the dome, an outer edge surrounding the folded ring and fixed on the basket, and a connecting portion connecting the folded ring and the outer edge, the shell further comprises a baffle wall arranged in a spaced manner with the basket, the outer edge is adhesively fixed on the support arm, and the connecting portion comprises a first connecting portion arranged in a spaced manner with the baffle wall, the first connecting portion is in a flat plate structure perpendicular to the vibration direction, and the problem of poor pure tone of the loudspeaker box and the problem of acoustic performance decline caused by the problem are solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a perspective structural schematic view of a loudspeaker box in an embodiment of the present application;

[0016] Fig. 2 is an exploded view of the loudspeaker box in Fig. 1;

[0017] Fig. 3 is a sectional view along line A-A in Fig. 1;

[0018] Fig. 4 is an enlarged structural schematic view of part B in Fig. 3;

[0019] Fig. 5 is a partial exploded view of the loudspeaker box in Fig. 1;

[0020] Fig. 6 is a sectional view along line B-B in Fig. 5;

[0021] Fig. 7 is a perspective structural schematic view of a diaphragm in an embodiment of the present application;

[0022] Fig. 8 is a sectional view along line C-C in Fig. 7. Embodiments of the present application

[0023] To further illustrate the embodiments, the present application provides accompanying drawings. These accompanying drawings are part of the disclosure of the present application, mainly used to illustrate the embodiments, and can be used to explain the operation principle of the embodiments in conjunction with the related description of the specification. Those of ordinary skill in the art should be able to understand other possible embodiments and advantages of the present application in conjunction with these contents. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] The present application will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Referring to FIG. 1, FIG. 2 and FIG. 5, the embodiment of the present application provides a speaker box 100, which comprises a shell 200 with a receiving space 201 and a speaker unit 300 received in the shell 200. Specifically, the shell 200 comprises an upper shell 210, a lower shell 220, an intermediate shell 230, and a receiving space 201 formed by the upper shell 210, the lower shell 220 and the intermediate shell 230. The intermediate shell 230 comprises a support arm 2301 extending towards the receiving space 201 and fixing the speaker unit 300. The shell 200 is provided with a sound outlet 2100 for connecting the receiving space 201 with the outside. The sound emitted by the speaker unit 300 is transmitted to the outside through the sound outlet 2100.

[0026] Referring to FIG. 2 and FIG. 3, the speaker unit 300 comprises a basket 10 fixed on the support arm 2301, a vibration system 20 fixed on the basket 10, a magnetic circuit system 30 driving the vibration system 20, and a flexible circuit board 40 for connecting the speaker unit 300 with an external circuit. The magnetic circuit system 30 and the vibration system 20 are fixed on the basket 10, and the basket 10 can support the magnetic circuit system 30 and the vibration system 20.

[0027] Referring to FIG. 2 and FIG. 3, the vibration system 20 comprises a diaphragm 22 fixed on the basket 10 and a voice coil 23 driving the diaphragm 22 to vibrate and emit sound. The voice coil 23 is introduced with an electric signal through the flexible circuit board 40. When the speaker 300 is connected with a power supply, the voice coil 23 vibrates under the action of the magnetic circuit system 30, thereby driving the diaphragm 22 to vibrate and emit sound.

[0028] Referring to FIG. 2 and FIG. 3, the magnetic circuit system 30 comprises a magnetic yoke 31 fixed on the basket 10, a main magnetic unit 32 fixed on the magnetic yoke 31 near the vibration system 20, and a secondary magnetic unit 33 arranged around the main magnetic unit 32. The secondary magnetic unit 33 and the main magnetic unit 32 jointly form a magnetic gap 301, and the voice coil 23 is suspended in the magnetic gap 301. The magnetic circuit system 30 further comprises a main pole core 34 above the main magnetic unit 32 and a secondary pole core 35 above the secondary magnetic unit 33. The secondary pole core 35 is fixed on the basket 10.

[0029] Please refer to FIG. 2 to FIG. 8, the intermediate shell 230 further comprises a retaining wall 2302 which is spaced apart from the basin frame 10 and located on the support arm 2301. The diaphragm 22 comprises a ball top 221 located in the middle, a folded ring 222 surrounding and spaced apart from the ball top 221, an inner edge 223 connecting the ball top 221 and the folded ring, an outer edge 224 surrounding and spaced apart from the folded ring 222, and a connecting portion 225 connecting the folded ring 222 and the outer edge 224, and the outer edge 224 is clamped between the support arm 2301 and the basin frame 10. Specifically, the diaphragm 22 is in a rounded rectangular structure, the connecting portion 225 comprises a first connecting portion 2251 which is arranged opposite to the retaining wall 2302, a second connecting portion 2252 which is located at the corner position, a third connecting portion 2253 which is along the long axis and connects two adjacent first connecting portions 2251, and a fourth connecting portion 2254 which is along the short axis and connects two adjacent first connecting portions 2251. The material of the diaphragm 22 in the embodiment can be a polymer material, specifically, it can be silicone, rubber, PEEK material or TPU material.

[0030] Please refer to FIG. 2 to FIG. 7, in the present embodiment, the folded ring 222 is an arc shape which is recessed along the vibration direction and towards the magnetic circuit system 30. At the same time, the width of the folded ring 222 perpendicular to the vibration direction and away from the outer edge 224 is greater than the width of the connecting portion 225 perpendicular to the vibration direction and away from the outer edge 224. In the present embodiment, the folded ring 222 and the ball top 221 are a connected structure. In other embodiments, the folded ring 222 and the ball top 221 can form an integrated structure.

[0031] Please refer to FIG. 4 to FIG. 8, specifically, the second connecting portion 2252, the third connecting portion 2253 and the fourth connecting portion 2254 are recessed along the vibration direction and away from the magnetic circuit system 30. The retaining wall 2302 on the support arm 2301 is used to position the speaker unit 300. When the diaphragm 22 is glued and fixed on the support arm 2301 with the retaining wall 2302, even if the gap between the retaining wall 2302 and the first side wall 2242 of the outer edge 224 of the diaphragm 22 is small, the glue will overflow to the first connecting portion 2251 of the diaphragm 22, but in the present application, by setting the structure of the first connecting portion 2251 as a flat structure perpendicular to the vibration direction, the problem of poor pure tone of the speaker box in the prior art is effectively avoided, thereby improving the acoustic performance.

[0032] Please refer to FIG. 4, the outer edge 224 comprises a bottom 2241 adhered to the support arm 2301, a first side wall 2242 extending from the bottom 2241 near the edge of the retaining wall 2302 in a direction parallel to the vibration direction and away from the bottom 2241, and a second side wall 2243 extending from the bottom 2241 and the connecting edge of the first connecting part 2251 in a direction parallel to the vibration direction and away from the bottom 2241. In the embodiment, the height of the first side wall 2242 is higher than the height of the second side wall 2243. In other embodiments, the height of the first side wall 2242 can also be lower than or equal to the height of the second side wall 2243.

[0033] The above only describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the inventive concept, and these improvements are within the protection scope of the present application.

Claims

1. A speaker box comprising a housing having a receiving cavity and a speaker unit received in the housing, the housing comprising a support arm extending towards the receiving cavity, the speaker unit being fixed on the support arm, the speaker unit comprising a basket fixed on the support arm, a vibration system fixed on the basket and a magnetic circuit system driving the vibration system to vibrate, the vibration system comprising a diaphragm fixed on the basket and a voice coil driving the diaphragm to vibrate to produce sound, the diaphragm comprising a dome in the middle, a folded ring surrounding the dome, an inner edge connecting the dome and the folded ring, an outer edge surrounding the folded ring and fixed on the basket and a connecting portion connecting the folded ring and the outer edge, characterized in that, The shell further comprises a retaining wall spaced apart from the yoke, the outer edge is glued and fixed to the support arm, and the connecting portion comprises a first connecting portion oppositely arranged to the retaining wall, and the first connecting portion is in a flat structure perpendicular to the vibration direction.

2. The speaker enclosure of claim 1, wherein, The diaphragm is in a round-corner rectangle, and the connecting portion further comprises a second connecting portion at a corner position, a third connecting portion extending along a long axis and connecting two adjacent first connecting portions, and a fourth connecting portion extending along a short axis and connecting two adjacent first connecting portions.

3. The speaker enclosure of claim 1, wherein, The first connecting portion and a surface of the outer edge away from the yoke are in the same plane.

4. The speaker enclosure of claim 2, wherein, The second connecting portion, the third connecting portion and the fourth connecting portion are recessed in the vibration direction and away from the magnetic circuit system.

5. The loudspeaker enclosure of claim 1, wherein, The folded ring is recessed in the vibration direction and towards the magnetic circuit system.

6. The speaker enclosure of claim 2, wherein, A width of the folded ring in a direction perpendicular to the vibration direction and parallel to the long axis or the short axis is greater than a width of the connecting portion in the direction perpendicular to the vibration direction and parallel to the long axis or the short axis.

7. The loudspeaker enclosure of claim 1, wherein The outer edge comprises a bottom part glued to the support arm, a first side wall bent and extended from an edge of the bottom part close to the retaining wall in a direction parallel to the vibration direction and away from the bottom part, and a second side wall bent and extended from a connecting edge of the bottom part and the first connecting portion in a direction parallel to the vibration direction and away from the bottom part.

8. The loudspeaker enclosure of claim 7, wherein, A height of the first side wall in the vibration direction is higher than a height of the second side wall in the vibration direction.

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