Three-cavity split-frequency speaker module

Abstract

The present invention discloses a three-cavity branch frequency speaker module, comprising a shell and a speaker unit, the shell having a cavity, a first sound outlet and a second sound outlet, the speaker unit is installed in the cavity, the speaker unit divides the cavity into a first cavity, a second cavity and a third cavity, the first cavity is connected to the first sound outlet, the second cavity and the third cavity are both connected to the second sound outlet; the frame of the speaker unit has a substrate part and an annular part, the upper and lower ends of the substrate part and the annular part respectively enclose an upper cavity and a lower cavity, the annular part is provided with a first sound outlet area; the magnetic circuit component has a second sound outlet area; the third sound outlet area is provided on the substrate part, the first sound outlet area faces the first cavity, the second sound outlet area faces the second cavity, and the third sound outlet area faces the third cavity; the overall structure is simple and reasonable, the mid-range and bass are discharged through the separate second sound outlet after merging, the layering between the mid-bass and the treble is obvious, and the sound quality effect of the product is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technology of loudspeaker field, and in particular to a three-cavity split-frequency loudspeaker module. Background Art

[0002] Although there are many types and quantities of speakers currently on the market, the speakers on the market have complex structures and poor rationality. The layering between the mid-bass and treble of the speakers is poor, resulting in poor sound quality.

[0003] Therefore, it is necessary to develop a new technical solution to solve the above problems. Summary of the invention

[0004] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide a three-cavity split-frequency speaker module, which has a simple overall structure and good rationality. The mid-range and bass are combined and discharged together through a separate second sound outlet, while the treble is discharged from the first sound outlet. The layering between the mid-bass and treble is obvious, which effectively improves the sound quality of the product.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A three-cavity split-way frequency speaker module comprises a shell and a speaker unit, wherein the shell has a cavity, a first sound outlet and a second sound outlet, the speaker unit is installed in the cavity, and the speaker unit divides the cavity into a first chamber, a second chamber and a third chamber, wherein the first chamber is connected to the first sound outlet, and the second chamber and the third chamber are both connected to the second sound outlet;

[0007] The speaker unit includes a frame, a magnetic circuit component, a voice coil and a vibration membrane;

[0008] The frame comprises a base plate portion and an annular portion connected to each other, the upper and lower ends of the base plate portion and the annular portion respectively enclose an upper cavity and a lower cavity, the base plate portion is provided with a mounting hole that passes through both sides of the base plate portion and the upper cavity from top to bottom, and the annular portion is provided with a first sound output area for passing through the lower cavity and the outside; the magnetic circuit assembly is installed corresponding to the mounting hole, and the magnetic circuit assembly has a second sound output area;

[0009] The upper side of the substrate portion is integrally extended upwardly to form a barrel portion around the mounting hole, and a third sound output area is further recessed on the upper side surface of the substrate portion at a position corresponding to the barrel portion and the annular portion, and the third sound output area runs through both sides of the substrate portion, the upper cavity and the lower cavity;

[0010] The vibration membrane is connected to the voice coil, and the vibration membrane is arranged on the lower side of the frame and covers the magnetic circuit assembly, the second sound output area and the third sound output area; the first sound output area faces the first cavity, the second sound output area faces the second cavity, and the third sound output area faces the third cavity.

[0011] As a preferred solution, the first sound outlet hole and the second sound outlet hole are both located on the same side of the housing.

[0012] As a preferred solution, the shell includes an upper shell and a lower shell, and the upper shell is detachably connected to the lower shell.

[0013] As a preferred solution, the lower shell has a bottom plate portion and a first side wall integrally extending upward from an upper end surface of the bottom plate portion;

[0014] A lower accommodating cavity with an upper end opening is formed between the inner wall of the first side wall and the upper end surface of the bottom plate, the speaker unit is installed in the lower accommodating cavity, and a first chamber is formed between the lower end surface of the upper shell and the inner wall of the lower accommodating cavity.

[0015] As a preferred solution, the upper shell has a first air passage and an upper accommodating cavity, the upper accommodating cavity has a lower end opening, the first air passage has a first through hole and a second through hole, and the second through hole is connected to the second sound outlet hole;

[0016] After the speaker unit is installed in the lower accommodating chamber and the upper shell and the lower shell are assembled, the speaker unit blocks the connection between the upper accommodating chamber and the lower accommodating chamber, the second sound output area extends into the upper accommodating chamber from the lower end opening of the upper accommodating chamber, the first air duct is connected to the upper accommodating chamber through the first through hole, and a second chamber is formed between the inner wall of the upper accommodating chamber and the first air duct.

[0017] As a preferred solution, the upper end surface of the bottom plate portion integrally extends upward to form a second side wall, the first side wall surrounds the periphery of the second side wall, a fourth chamber with an upper end opening is formed between the inner wall of the second side wall and the upper end surface of the bottom plate portion, and the fourth chamber is connected to the second sound outlet hole;

[0018] When the upper shell and the lower shell are assembled, the upper shell covers the upper end opening of the fourth cavity, and the second through hole is connected to the second sound outlet hole through the fourth cavity.

[0019] As a preferred embodiment, the upper shell has a second air duct, a third through hole and a fourth through hole, the two ends of the second air duct are respectively connected to the third through hole and the fourth through hole to form a third chamber, the third sound output area faces the third through hole, and the fourth through hole is connected to the second sound output hole.

[0020] As a preferred solution, the upper shell includes an upper cover body and an upper shell body detachably connected to the upper cover body, and the upper cover body and the upper shell body are assembled up and down to form a second chamber and / or a third chamber.

[0021] As a preferred solution, a first damping member is covered on the upper side of the frame corresponding to the third sound output area, a second damping member is covered on the first sound output area, and a third damping member is covered on the second sound output area.

[0022] As a preferred solution, the bottom plate is provided with an air hole which passes through the upper and lower sides thereof vertically, and the air hole is covered with a fourth damping member.

[0023] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that the overall structure is simple and reasonable. In particular, the bass, midrange and treble are firstly passed through three channels respectively, and then the midrange and bass are combined and discharged together through a separate second sound outlet, while the treble is discharged from the first sound outlet. The layering between the midrange, bass and treble is obvious, which effectively improves the sound quality of the product.

[0024] Secondly, the design of the fourth chamber allows the midrange and bass to converge and be fully and evenly mixed before leaving the shell, further improving the sound quality of the product.

[0025] Furthermore, it is possible to flexibly choose whether to cover the corresponding damping element at the corresponding sound output area according to actual design requirements;

[0026] In addition, the various parts are easy and firm to assemble, ensuring the stability and reliability of the finished earphones during use.

[0027] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a three-dimensional assembly structure of a preferred embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of a three-dimensional assembly structure from another angle of a preferred embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the decomposed structure of a preferred embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the decomposition structure of the sound module of a preferred embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the decomposed structure of a speaker unit according to a preferred embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of a partial structure of a preferred embodiment of the present invention from a top view (mainly showing the airflow direction of the first sound outlet area);

[0034] Figure 7 It is a schematic diagram of the first cross-sectional structure of a preferred embodiment of the present invention (mainly showing the airflow direction of the second sound outlet area);

[0035] Figure 8 It is a schematic diagram of the second cross-sectional structure of a preferred embodiment of the present invention (mainly showing the airflow direction of the third sound outlet area).

[0036] Description of the accompanying drawings:

[0037] 10. Shell 101, first sound outlet

[0038] 102. Second sound hole

[0039] 11. Upper shell 111. First air duct

[0040] 1111, first through hole 1112, second through hole

[0041] 112, upper accommodating chamber 113, second airway

[0042] 114, third through hole 115, fourth through hole

[0043] 116. Upper cover 117. Upper shell body

[0044] 12. Lower shell

[0045] 121, bottom plate 122, first side wall

[0046] 123, lower accommodating chamber 124, second side wall

[0047] 125. Fourth chamber 13. Outer cover

[0048] 20. Speaker unit 201. First sound output area

[0049] 202, second sound output area 203, third sound output area

[0050] 21. Frame 211. Base plate

[0051] 212, annular portion 213, upper cavity

[0052] 214, lower cavity 215, mounting hole

[0053] 216, cylinder 217, clearance hole

[0054] 22. Voice coil 23. Vibrating membrane

[0055] 24. Magnet 25. Washer

[0056] 26. Second air hole 27. Yoke iron

[0057] 31. First damping member 32. Second damping member

[0058] 33. The third damping element 34. The fourth damping element DETAILED DESCRIPTION

[0059] like Figures 1 to 8 As shown, a three-cavity branch frequency speaker module includes a shell 10 and a speaker unit 20, the shell 10 has a cavity, a first sound outlet 101 and a second sound outlet 102, the speaker unit 20 is installed in the cavity, and the speaker unit 20 divides the cavity into a first chamber, a second chamber and a third chamber, the first chamber is connected to the first sound outlet 101, and the second chamber and the third chamber are both connected to the second sound outlet 102; in this embodiment, the first sound outlet 101 and the second sound outlet 102 are both located on the same side of the shell 10.

[0060] The speaker unit 20 includes a frame 21 , a magnetic circuit component, a voice coil 22 and a vibration membrane 23 . The magnetic circuit component includes a yoke 27 , a magnet 24 and a washer 25 .

[0061] The frame 21 comprises a substrate portion 211 and an annular portion 212 connected to each other, the upper and lower ends of the substrate portion 211 and the annular portion 212 respectively enclose an upper cavity 213 and a lower cavity 214, the substrate portion 211 is provided with a mounting hole 215 which passes through both sides of the substrate portion 211, the upper cavity 213 and the lower cavity 214 from top to bottom, and the annular portion 212 is provided with a first sound output area 201 for passing through the lower cavity 214 and the outside; the magnetic circuit assembly is installed corresponding to the mounting hole 215, and the magnetic circuit assembly has a second sound output area 202;

[0062] The upper side of the substrate 211 is formed with a cylindrical body 216 extending upwards around the mounting hole 215, and a third sound output area 203 is further recessed on the upper side surface of the substrate 211 at a position between the cylindrical body 216 and the annular portion 212. The third sound output area 203 passes through both sides of the substrate 211, the upper cavity 213 and the lower cavity 214. In this embodiment, the lower end of the third sound output area 203 passes through the lower side of the substrate 211 through a plurality of clearance holes 217 arranged along the annular spacing. A first damping member 31 is covered on the upper side of the frame 21 corresponding to the third sound output area 203, a second damping member 32 is covered on the first sound output area 201, and a third damping member 33 is covered on the second sound output area 202.

[0063] In this embodiment, the yoke 27, the magnet 24, and the washer 25 are all formed with second air holes 26 that are aligned and penetrate through the center in sequence, and all the second air holes 26 form a second sound output area 202;

[0064] The vibration membrane 23 is connected to the voice coil 22, and the vibration membrane 23 is arranged on the lower side of the frame 21 and covers the magnetic circuit assembly, the second sound output area 202 and the third sound output area 203; the first sound output area 201 faces the first cavity, the second sound output area 202 faces the second cavity, and the third sound output area 203 faces the third cavity.

[0065] In this embodiment, the housing 10 includes an upper housing 11, a lower housing 12 and an outer cover 13, wherein the upper housing 11 is detachably connected to the lower housing 12. The lower housing 12 has a bottom plate 121 and a first side wall 122 integrally extending upward from the upper end surface of the bottom plate 121;

[0066] A lower accommodating chamber 123 with an upper end opening is formed between the inner wall of the first side wall 122 and the upper end surface of the bottom plate portion 121 . The speaker unit 20 is installed in the lower accommodating chamber 123 . A first chamber is formed between the lower end surface of the upper shell 11 and the inner wall of the lower accommodating chamber 123 .

[0067] The upper end surface of the bottom plate portion 121 is further integrally extended upward to form a second side wall 124, the first side wall 122 surrounds the outer periphery of the second side wall 124, and a fourth cavity 125 with an upper end opening is formed between the inner wall of the second side wall 124 and the upper end surface of the bottom plate portion 121, and the fourth cavity 125 is connected to the second sound outlet 102;

[0068] The bottom plate 121 is provided with air holes extending vertically through the bottom plate 121, and the air holes are covered with a fourth damping member 34. The air holes include a first air hole and a third air hole, wherein the first air hole is formed on the bottom plate 121 where the first chamber is located, and the third air hole is formed on the bottom plate 121 where the fourth chamber 125 is located.

[0069] When the upper shell 11 and the lower shell 12 are assembled, the upper shell 11 covers the upper end opening of the fourth chamber 125, and the second through hole 1112 described below is connected to the second sound outlet 102 through the fourth chamber 125. The sounds of the second chamber and the third chamber will be mixed in the fourth chamber 125 and then discharged outside the shell 10 through the second sound outlet 102.

[0070] The upper housing 11 has a first air passage 111, an upper accommodating chamber 112, a second air passage 113, a first through hole 1111, a second through hole 1112, a third through hole 114 and a fourth through hole 115. The upper accommodating chamber 112 has a lower opening. The first air passage 111 has a first through hole 1111. The first air passage 111 is connected to the second sound outlet hole 102 through the second through hole 1112.

[0071] After the speaker unit 20 is installed in the lower accommodating chamber 123 and the upper shell 11 and the lower shell 12 are assembled, the speaker unit 20 blocks the connection between the upper accommodating chamber 112 and the lower accommodating chamber 123, and the second sound output area 202 extends into the upper accommodating chamber 112 from the lower end opening of the upper accommodating chamber 112. The first air duct 111 is connected to the upper accommodating chamber 112 through the first through hole 1111, and a second chamber is formed between the inner wall of the upper accommodating chamber 112 and the first air duct 111.

[0072] Two ends of the second air channel 113 are respectively connected to the third through hole 114 and the fourth through hole 115 to form a third chamber. The third sound outlet area 203 faces the third through hole 114 , and the fourth through hole 115 is connected to the second sound outlet hole 102 .

[0073] The upper shell 11 includes an upper cover 116 and an upper shell body 117 detachably connected to the upper cover 116. Preferably, the second through hole 1112, the third through hole 114 and the fourth through hole 115 are arranged on the upper shell body 117. The upper cover 116 and the upper shell body 117 are assembled up and down to form a second chamber and / or a third chamber. In this embodiment, the upper cover 116 and the upper shell body 117 are assembled up and down to form a second chamber and a third chamber.

[0074] Next, I will briefly describe the direction of the sound:

[0075] The sound generated by the vibration of the diaphragm 23 is divided into three parts and leaves the housing 10, such as Figure 6 As shown, the first part of the sound passes through the lower cavity 214, the first sound outlet area 201, the first cavity and the first sound outlet hole 101 in sequence and leaves the housing 10;

[0076] like Figure 7 As shown, the second part of the sound passes through the lower cavity 214, the mounting hole 215, the second sound outlet area 202, the upper accommodating cavity 112, the first through hole 1111, the first air channel 111, the second through hole 1112, the fourth cavity 125 and the second sound outlet hole 102 in sequence to leave the housing 10;

[0077] like Figure 8As shown, the third part of the sound passes through the lower cavity 214, the clearance hole, the third sound outlet area 203, the second air channel 113, the third through hole 114, the fourth through hole 115, the fourth cavity 125 and the second sound outlet hole 102 in sequence to leave the shell 10.

[0078] The design focus of the present invention is that the overall structure is simple and reasonable. In particular, the bass, midrange and treble are firstly passed through three channels respectively, and then the midrange and bass are combined and discharged through a separate second sound outlet, while the treble is discharged from the first sound outlet. The layering between the midrange and bass and the treble is obvious, which effectively improves the sound quality of the product.

[0079] Secondly, the design of the fourth chamber allows the midrange and bass to converge and be fully and evenly mixed before leaving the shell, further improving the sound quality of the product.

[0080] Furthermore, it is possible to flexibly choose whether to cover the corresponding damping element at the corresponding sound output area according to actual design requirements;

[0081] In addition, the various parts are easy and firm to assemble, ensuring the stability and reliability of the finished earphones during use.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A three-cavity split-frequency speaker module, characterized in that: The speaker comprises a shell and a speaker unit, wherein the shell has a cavity, a first sound outlet hole and a second sound outlet hole, wherein the first sound outlet hole and the second sound outlet hole are both located on the same side of the shell; the speaker unit is installed in the cavity, and the speaker unit divides the cavity into a first chamber, a second chamber and a third chamber, wherein the first chamber is connected to the first sound outlet hole, and the second chamber and the third chamber are both connected to the second sound outlet hole; The housing comprises an upper housing and a lower housing, wherein the upper housing is detachably connected to the lower housing; The speaker unit includes a frame, a magnetic circuit component, a voice coil and a vibration membrane; The frame comprises a base plate portion and an annular portion connected to each other, the upper and lower ends of the base plate portion and the annular portion respectively enclose an upper cavity and a lower cavity, the base plate portion is provided with a mounting hole that passes through both sides of the base plate portion and the upper cavity from top to bottom, and the annular portion is provided with a first sound output area for passing through the lower cavity and the outside; the magnetic circuit assembly is installed corresponding to the mounting hole, and the magnetic circuit assembly has a second sound output area; The upper side of the substrate portion is integrally extended upwardly to form a barrel portion around the mounting hole, and a third sound output area is further recessed on the upper side surface of the substrate portion at a position corresponding to the barrel portion and the annular portion, and the third sound output area runs through both sides of the substrate portion, the upper cavity and the lower cavity; The vibration membrane is connected to the voice coil, and the vibration membrane is arranged on the lower side of the frame and covers the magnetic circuit assembly, the second sound output area and the third sound output area; the first sound output area faces the first cavity, the second sound output area faces the second cavity, and the third sound output area faces the third cavity.

2. The three-cavity split-frequency speaker module according to claim 1, characterized in that: The lower shell has a bottom plate portion and a first side wall extending upward from the upper end surface of the bottom plate portion; A lower accommodating cavity with an upper end opening is formed between the inner wall of the first side wall and the upper end surface of the bottom plate, the speaker unit is installed in the lower accommodating cavity, and a first chamber is formed between the lower end surface of the upper shell and the inner wall of the lower accommodating cavity.

3. The three-cavity split-frequency speaker module according to claim 2, characterized in that: The upper shell has a first air passage and an upper accommodating cavity, the upper accommodating cavity has a lower end opening, the first air passage has a first through hole and a second through hole, and the second through hole is connected to the second sound outlet hole; After the speaker unit is installed in the lower accommodating chamber and the upper shell and the lower shell are assembled, the speaker unit blocks the connection between the upper accommodating chamber and the lower accommodating chamber, the second sound output area extends into the upper accommodating chamber from the lower end opening of the upper accommodating chamber, the first air duct is connected to the upper accommodating chamber through the first through hole, and a second chamber is formed between the inner wall of the upper accommodating chamber and the first air duct.

4. The three-cavity split-frequency speaker module according to claim 3, characterized in that: The upper end surface of the bottom plate portion integrally extends upward to form a second side wall, the first side wall surrounds the periphery of the second side wall, a fourth chamber with an upper end opening is formed between the inner wall of the second side wall and the upper end surface of the bottom plate portion, and the fourth chamber is connected to the second sound outlet hole; When the upper shell and the lower shell are assembled, the upper shell covers the upper end opening of the fourth cavity, and the second through hole is connected to the second sound outlet hole through the fourth cavity.

5. The three-cavity split-frequency speaker module according to claim 1, characterized in that: The upper shell has a second air channel, a third through hole and a fourth through hole, the two ends of the second air channel are respectively connected to the third through hole and the fourth through hole to form a third chamber, the third sound output area faces the third through hole, and the fourth through hole is connected to the second sound output hole.

6. The three-cavity split-frequency speaker module according to claim 1, characterized in that: The upper shell comprises an upper cover and an upper shell body detachably connected to the upper cover. The upper cover and the upper shell body are assembled up and down to form a second chamber and / or a third chamber.

7. The three-cavity split-frequency speaker module according to claim 1, characterized in that: A first damping member is covered on the upper side of the frame corresponding to the third sound output area, a second damping member is covered on the first sound output area, and a third damping member is covered on the second sound output area.

8. The three-cavity split-frequency speaker module according to claim 2, characterized in that: The bottom plate is provided with an air hole which passes through the upper and lower sides thereof vertically, and the air hole is covered with a fourth damping member.

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