Three-chamber frequency division speaker module

Abstract

The present invention relates to a three-cavity frequency division 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 divides the cavity into a first chamber, a second chamber and a third chamber, the first chamber and the second chamber are both connected to the first sound outlet, and the third chamber is connected to the second sound outlet; the speaker unit comprises a frame, a magnetic circuit component, a voice coil and a vibration membrane; the magnetic circuit component has a first sound outlet area, and an isolation ring divides the hollow structure into a second sound outlet area and a third sound outlet area, the first sound outlet area faces the first chamber, the second sound outlet area faces the second chamber, and the third sound outlet area faces the third chamber; the overall structure is simple and reasonable, and the layering between the bass and the mid-high frequency is obvious through the independent allocation of the corresponding chambers and the setting path of the corresponding sound outlets, thereby effectively improving the sound quality effect of the product.

Description

Technical Field

[0001] The present invention relates to the technology of loudspeaker field, and in particular to a three-cavity frequency division 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 bass and treble in 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 the shortcomings of the above-mentioned prior art, the main purpose of the present invention is to provide a three-cavity frequency-divided speaker module, which has a simple overall structure and good rationality. Through the independent allocation of corresponding chambers and the setting paths of corresponding sound outlets, the layering between mid-bass and treble is obvious, thereby effectively improving the sound quality of the product.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme:

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

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

[0008] The magnetic circuit assembly has a first sound output area, the frame is provided with a mounting hole that passes through the upper and lower sides thereof, the magnetic circuit assembly is installed in the mounting hole, and the first sound output area is respectively connected to the mounting hole and the lower side of the frame;

[0009] The upper end surface of the frame is provided with a hollow structure at the periphery of the mounting hole, and an isolation ring is formed on the frame, and the isolation ring separates the hollow structure into a second sound output area and a third sound output area, the second sound output area is close to the magnetic circuit assembly, and the third sound output area is far away from the magnetic circuit assembly;

[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 upper end surface of the frame integrally extends upward around the corresponding mounting hole to form a first cylindrical portion, the second sound output area is located between the first cylindrical portion and the isolation ring, and the third sound output area is located on the periphery of the isolation ring.

[0012] 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.

[0013] 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.

[0014] 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;

[0015] 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 portion, the speaker unit is installed in the lower accommodating cavity, a third cavity is formed between the lower end surface of the upper shell body and the inner wall of the lower accommodating cavity, and the third sound output area of ​​the speaker unit is located in the third cavity.

[0016] 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, and 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 first sound outlet hole;

[0017] When the upper shell and the lower shell are assembled, the upper shell covers the upper end opening of the fourth cavity, and the first cavity and the second cavity are both connected to the first sound outlet through the fourth cavity.

[0018] As a preferred solution, the upper shell has a first through hole, a second through hole and an upper accommodating cavity, and the upper accommodating cavity is respectively connected to the first through hole and the second through hole to form a second chamber;

[0019] The speaker unit is installed in the upper accommodating cavity, and the second sound outlet area of ​​the speaker unit is connected to the upper accommodating cavity through the first through hole, and the second through hole is connected to the first sound outlet hole.

[0020] As a preferred solution, the upper shell has an airflow channel, a third through hole and a fourth through hole, and two ends of the airflow channel are connected to the third through hole and the fourth through hole to form a first chamber;

[0021] The first sound outlet area of ​​the speaker unit is connected to the air flow channel through the third through hole, and the fourth through hole is connected to the first sound outlet hole.

[0022] As a preferred solution, the upper shell includes a cover portion and a shielding portion that are detachably connected, and the airflow channel, the third through hole and the fourth through hole are all formed on the cover portion.

[0023] As a preferred solution, the first sound outlet area, the second sound outlet area and the third sound outlet area are all completely open, or at least one of the first sound outlet area, the second sound outlet area and the third sound outlet area is covered with a damping member.

[0024] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, the overall structure is simple and reasonable. In particular, the bass, midrange and treble are first passed through three chambers respectively, and then the midrange and treble are combined and discharged through the first sound outlet, while the bass is discharged from the second sound outlet. Through the independent distribution of the corresponding chambers and the setting paths of the corresponding sound outlets, the layering between the bass and the midrange and treble is obvious, which effectively improves the sound quality of the product.

[0025] 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.

[0026] 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;

[0027] In addition, the various parts are easy and firm to assemble, ensuring the stability and reliability of the finished earphones during use. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0031] Figure 4 is a schematic diagram of the exploded structure of a speaker unit according to an embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the exploded structure of the upper shell of an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of the exploded structure of the upper shell of an embodiment of the present invention from another angle;

[0034] Figure 7 is a schematic diagram of a first cross-sectional structure of an embodiment of the present invention (mainly showing the direction of the first part of the airflow path);

[0035] Figure 8 is a schematic diagram of the first cross-sectional structure of an embodiment of the present invention (mainly showing the direction of the second part of the airflow path);

[0036] Fig. 9 It is a top view of an embodiment of the present invention (the upper shell is not shown, and the direction of the third part of the airflow path is mainly shown).

[0037] Description of Figure Numbers:

[0038] 10. Shell 101, first sound outlet

[0039] 102. Second sound hole

[0040] 11. Upper shell

[0041] 111. Cover plate portion 112. Shielding portion

[0042] 1121, second barrel portion 1122, third EVA gasket mounting groove

[0043] 1123, Make Way Hole

[0044] 113, first through hole 114, second through hole

[0045] 115. Upper accommodating chamber 116. Air flow channel

[0046] 117, third through hole 118, fourth through hole

[0047] 1181, annular extension

[0048] 12. Lower housing 121, bottom plate

[0049] 122, first side wall 123, second side wall

[0050] 124. Shielding portion installation position 125. Lower accommodation cavity

[0051] 126. The Fourth Chamber

[0052] 20. Speaker unit 201. First sound output area

[0053] 202, second sound output area 203, third sound output area

[0054] 21. Framework

[0055] 211, mounting hole 2111, limiting step

[0056] 212, first cylinder portion 22, isolation ring

[0057] 23. Vibrating membrane 24. Yoke

[0058] 25. Magnet 26. Washer

[0059] 27. Voice coil 28. Protective cover

[0060] 31. First EVA gasket 32. Second EVA gasket

[0061] 33. The third EVA gasket 34. The fourth EVA gasket

[0062] 351, first damping member 352, second damping member

[0063] 353. The third damping element. DETAILED DESCRIPTION

[0064] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0065] like Figures 1 to 9 As shown, a three-cavity frequency-divided speaker module includes a shell 10 and a speaker unit 20, the shell 10 has a cavity, a first sound hole 101 and a second sound hole 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 and the second chamber are both connected to the first sound hole 101, and the third chamber is connected to the second sound hole 102; preferably, the first sound hole 101 and the second sound hole 102 are both located on the same side of the shell 10.

[0066] The speaker unit 20 includes a frame 21, a magnetic circuit assembly, a voice coil 27, a vibration membrane 23 and a protective cover 28, wherein the vibration membrane 23 is located between the frame 21 and the protective cover 28. The magnetic circuit assembly has a first sound output area 201, and the frame 21 is provided with a mounting hole 211 that passes through the upper and lower sides thereof from top to bottom. The magnetic circuit assembly is installed in the mounting hole 211, and the first sound output area 201 is connected to the mounting hole 211 and the lower side of the frame 21 respectively.

[0067] The upper end surface of the frame 21 is located at the periphery of the mounting hole 211 and is provided with a hollow structure, and an isolation ring 22 is formed on the frame 21, and the isolation ring 22 separates the hollow structure into a second sound output area 202 and a third sound output area 203, wherein the second sound output area 202 is close to the magnetic circuit assembly, and the third sound output area 203 is far away from the magnetic circuit assembly; in this embodiment, the upper end surface of the frame 21 is integrally extended upward around the mounting hole 211 to form a first cylindrical portion 212, the second sound output area 202 is located between the first cylindrical portion 212 and the isolation ring 22, and the third sound output area 203 is located at the periphery of the isolation ring 22.

[0068] In this embodiment, the magnetic circuit assembly includes a yoke 24, a magnet 25 and a washer 26; the yoke 24, the magnet 25, and the washer 26 are all formed with air holes that pass through in sequence along the center, and all the air holes constitute a first sound output area 201; preferably, the inner wall of the mounting hole 211 forms a limited step portion 2111, and the yoke 24 is opened in a direction and the lower end of the yoke 24 is against the limited step portion 2111.

[0069] The diaphragm 23 is connected to the voice coil 27, and the diaphragm 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. It should be noted that the second sound output area 202 produces a mid-range effect, and the third sound output area produces a bass effect. The first sound outlet area 201, the second sound outlet area 202 and the third sound outlet area 203 are all completely open, or at least one of the first sound outlet area 201, the second sound outlet area 202 and the third sound outlet area 203 is covered with a damping member. In this embodiment, the damping member includes a first damping member 351, a second damping member 352 and a third damping member 353; the first sound outlet area 201, the second sound outlet area 202 and the third sound outlet area 203 are respectively covered with a first damping member 351, a second damping member 352 and a third damping member 353. Whether to cover the corresponding sound outlet area and the sound outlet hole can be flexibly selected according to actual design requirements.

[0070] In this embodiment, the housing 10 includes an upper housing 11 and a lower housing 12, and 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;

[0071] A lower accommodating chamber 125 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, and the speaker unit 20 is installed in the lower accommodating chamber 125. A third chamber is formed between the lower end surface of the upper shell 11 and the inner wall of the lower accommodating chamber 125, and the third sound output area 203 of the speaker unit 20 is located in the third chamber.

[0072] The upper end surface of the bottom plate portion 121 is integrally extended upward to form a second side wall 123, the first side wall 122 surrounds the outer periphery of the second side wall 123, and a fourth chamber 126 with an upper end opening is formed between the inner wall of the second side wall 123 and the upper end surface of the bottom plate portion 121, and the fourth chamber 126 is connected to the first sound outlet 101;

[0073] When the upper shell 11 and the lower shell 12 are assembled, the upper shell 11 covers the upper opening of the fourth chamber 126 , and the first chamber and the second chamber are both connected to the first sound outlet 101 through the fourth chamber 126 .

[0074] In this embodiment, the upper shell 11 has a first through hole 113, a second through hole 114 and an upper accommodating chamber 115, and the upper accommodating chamber 115 is connected to the first through hole 113 and the second through hole 114 respectively to form a second chamber; the speaker unit 20 is installed in the upper accommodating chamber 115 and the second sound output area 202 of the speaker unit 20 is connected to the upper accommodating chamber 115 through the first through hole 113, and the second through hole 114 and the fourth chamber 126 are connected to the first sound output hole 101.

[0075] The upper shell 11 has an airflow channel 116, a third through hole 117 and a fourth through hole 118. The two ends of the airflow channel 116 are connected to the third through hole 117 and the fourth through hole 118 to form a first chamber. The first sound outlet area 201 of the speaker unit 20 is connected to the airflow channel 116 through the third through hole 117, and the fourth through hole 118 and the fourth chamber 126 are connected to the first sound outlet hole 101. In this embodiment, the airflow channel 116 is also connected to the outside of the upper shell 11 through an opening, and a fourth EVA gasket 34 is provided at the opening to block the airflow path from the airflow channel 116 directly to the outside of the upper shell 11.

[0076] The upper shell 11 includes a detachably connected cover plate portion 111 and a shielding portion 112. The upper end of the lower shell 12 is formed with a shielding portion installation position 124. The shielding portion 112 is installed in the shielding portion installation position 124 through a first EVA gasket 31. The airflow channel 116, the third through hole 117 and the fourth through hole 118 are all formed on the cover plate portion 111. The cover plate portion 111 is connected to the yoke 24 through a second EVA gasket 32.

[0077] The lower end of the cover portion 111 is integrally provided with an annular extension portion 1181 protruding downwardly at the periphery of the fourth through hole 118, and the shielding portion 112 is provided with a clearance hole 1123 corresponding to the annular extension portion 1181 and penetrating the upper and lower ends of the shielding portion 112. The annular extension portion 1181 is installed in the clearance hole 1123 and extends into the fourth chamber 126 to connect with the first sound outlet 101.

[0078] The lower end surface of the shielding portion 112 corresponds to the first through hole 113 and extends downward to form a second cylindrical portion 1121. The second cylindrical portion 1121 is connected to the isolation ring 22 via a third EVA gasket 33. The lower end of the second cylindrical portion 1121 is recessed upward to provide a third EVA gasket mounting groove 1122. The third EVA gasket 33 is installed in the third EVA gasket mounting groove 1122.

[0079] Next, we will briefly describe the direction of the airflow path:

[0080] The airflow path generated by the vibration of the diaphragm 23 is divided into three parts and leaves the housing 10, such as Figure 7 As shown, the first part of the airflow path passes through the mounting hole 211, the first sound outlet area 201, the third through hole 117, the airflow channel 116, the fourth through hole 118, the fourth chamber 126 and the first sound outlet hole 101 in sequence to leave the housing 10;

[0081] like Figure 8 As shown, the second part of the airflow path passes through the second sound outlet area 202, the first through hole 113, the upper accommodating cavity 115, the second through hole 114, the fourth cavity 126 and the first sound outlet hole 101 in sequence to leave the housing 10;

[0082] like Fig. 9 As shown, the third portion of the airflow path passes through the third sound outlet area 203 , the lower accommodating cavity 125 and the second sound outlet hole 102 in sequence and leaves the housing 10 .

[0083] In summary, the key points of the design of the present invention are that the overall structure is simple and reasonable. In particular, the bass, midrange and treble are first passed through three chambers respectively, and then the midrange and treble are combined and discharged through a separate first sound outlet, while the bass is discharged from the second sound outlet. Through the independent distribution of the corresponding chambers and the setting paths of the corresponding sound outlets, the layering between the bass and the midrange and treble is obvious, which effectively improves the sound quality of the product.

[0084] 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.

[0085] 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;

[0086] In addition, the various parts are easy and firm to assemble, ensuring the stability and reliability of the finished earphones during use.

[0087] 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 frequency division speaker module, characterized in that: The invention 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 and the second chamber are both connected to the first sound outlet hole, and the third chamber is connected to the second sound outlet hole; The speaker unit includes a frame, a magnetic circuit component, a voice coil and a vibration membrane; The magnetic circuit assembly has a first sound output area, the frame is provided with a mounting hole that passes through the upper and lower sides thereof, the magnetic circuit assembly is installed in the mounting hole, and the first sound output area is respectively connected to the mounting hole and the lower side of the frame; The upper end surface of the frame is provided with a hollow structure at the periphery of the mounting hole, and an isolation ring is formed on the frame, and the isolation ring separates the hollow structure into a second sound output area and a third sound output area, the second sound output area is close to the magnetic circuit assembly, and the third sound output area is far away from the magnetic circuit assembly; 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; The first sound outlet area, the second sound outlet area and the third sound outlet area are all completely open, or at least one of the first sound outlet area, the second sound outlet area and the third sound outlet area is covered with a damping member.

2. The three-cavity frequency division speaker module according to claim 1, characterized in that: The upper end surface of the frame integrally extends upward around the corresponding mounting hole to form a first barrel portion, the second sound output area is located between the first barrel portion and the isolation ring, and the third sound output area is located at the periphery of the isolation ring.

3. The three-cavity frequency division speaker module according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell, and the upper shell is detachably connected to the lower shell.

4. The three-cavity frequency division speaker module according to claim 3, 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 portion, the speaker unit is installed in the lower accommodating cavity, a third cavity is formed between the lower end surface of the upper shell body and the inner wall of the lower accommodating cavity, and the third sound output area of ​​the speaker unit is located in the third cavity.

5. The three-cavity frequency division speaker module according to claim 4, 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 outer periphery of the second side wall, and 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 first sound outlet hole; When the upper shell and the lower shell are assembled, the upper shell covers the upper end opening of the fourth chamber, and the first chamber and the second chamber are both connected to the first sound outlet through the fourth chamber.

6. The three-cavity frequency division speaker module according to claim 3, characterized in that: The upper shell has a first through hole, a second through hole and an upper accommodating cavity, and the upper accommodating cavity is connected to the first through hole and the second through hole to form a second chamber; The speaker unit is installed in the upper accommodating cavity, and the second sound outlet area of ​​the speaker unit is connected to the upper accommodating cavity through the first through hole, and the second through hole is connected to the first sound outlet hole.

7. The three-cavity frequency division speaker module according to claim 3, characterized in that: The upper shell has an airflow channel, a third through hole and a fourth through hole, and two ends of the airflow channel are connected to the third through hole and the fourth through hole to form a first chamber; The first sound outlet area of ​​the speaker unit is connected to the air flow channel through the third through hole, and the fourth through hole is connected to the first sound outlet hole.

8. The three-cavity frequency division speaker module according to claim 7, characterized in that: The upper shell includes a cover portion and a shielding portion that are detachably connected, and the air flow channel, the third through hole and the fourth through hole are all formed on the cover portion.

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