A composite loudspeaker

Abstract

The present invention provides a composite loudspeaker, which includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound; the vibration system includes a first woofer and a tweeter arranged on the first surface of the magnetic circuit system and a second woofer arranged on the second surface of the magnetic circuit system, the first woofer and the tweeter are coaxially arranged, and the first woofer is arranged around the outside of the tweeter; the magnetic circuit system includes a central magnetic steel and a side magnetic steel arranged on the periphery of the central magnetic steel; the central magnetic steel and the side magnetic steel are magnetized in reverse. The composite loudspeaker of the present invention can generate sound from both sides, improve the effective sound radiation area, improve the frequency response, reduce the structural nonlinearity, reduce the distortion, and improve the sound quality of the loudspeaker; the vibration system includes both a woofer sound generating unit and a tweeter, which makes up for the lack of high-frequency frequency response of the loudspeaker.

Description

Technical Field

[0001] The present invention relates to the field of electroacoustic technology, and in particular to a composite loudspeaker. Background Art

[0002] The market for AR or VR glasses is growing, but the speakers currently equipped with AR / VR glasses are often single-sided speakers, either speaker boxes or single-driver speakers. They usually have the following disadvantages: 1. Although the speaker units are natural dipoles with good isolation at low frequencies, the isolation at mid- and high-frequency parts has peaks and valleys, which is not up to expectations. 2. Current speakers often have large valleys in the high-frequency part, which affects the listening experience.

[0003] Therefore, it is necessary to provide a composite loudspeaker with good isolation and excellent high-frequency and low-frequency response. Summary of the invention

[0004] The object of the present invention is to provide a composite loudspeaker having good isolation and excellent high-frequency and low-frequency responses.

[0005] The technical solution of the present invention is as follows:

[0006] The present invention provides a composite loudspeaker, which comprises a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound; the vibration system comprises a first woofer and a tweeter arranged on a first surface of the magnetic circuit system, and a second woofer arranged on a second surface of the magnetic circuit system, the first woofer and the tweeter are coaxially arranged, and the first woofer is arranged around the outside of the tweeter; the magnetic circuit system comprises a central magnet and side magnets arranged on the periphery of the central magnet; the central magnet and the side magnets are magnetized in reverse.

[0007] Optionally, the basket includes a first basket and a second basket arranged on the first side of the magnetic circuit system, and a third basket arranged on the second side of the magnetic circuit system; the first basket and the second basket are coaxially arranged, and the first basket ring is arranged on the outer periphery of the second basket; the first woofer is supported on a side of the first basket away from the magnetic circuit system, the tweeter is supported on a side of the second basket away from the magnetic circuit system, and the second woofer is supported on a side of the third basket away from the magnetic circuit system.

[0008] Optionally, the first woofer unit includes a first woofer voice coil and a first woofer diaphragm, the first woofer diaphragm is arranged on the side of the first woofer voice coil away from the magnetic circuit system and supported by the first basin rack; the tweeter unit includes a tweeter voice coil and a tweeter diaphragm, the tweeter diaphragm is arranged on the side of the tweeter voice coil away from the magnetic circuit system and supported by the second basin rack; the second woofer unit includes a second woofer voice coil and a second woofer diaphragm arranged on the second side of the magnetic circuit system, the second woofer diaphragm is arranged on the side of the second woofer voice coil away from the magnetic circuit system and supported by the third basin rack.

[0009] Optionally, the side magnets include a first side magnet disposed on the periphery of the center magnet and a second side magnet disposed on the first surface of the center magnet, the first side magnet and the center magnet are spaced apart, and the first side magnet and the second side magnet are magnetized in the opposite direction to the center magnet; the magnetic circuit system also includes a first magnetic bowl, a second magnetic bowl, a third magnetic bowl and a fourth magnetic bowl, the first magnetic bowl is used to accommodate the center magnet, the second magnetic bowl is disposed on the second surface of the first side magnet and is aligned with the first side magnet, the third magnetic bowl cover is disposed on the first surface of the center magnet, the second side magnet is disposed on the first surface of the third magnetic bowl, and the fourth magnetic bowl cover is disposed on the second side magnet.

[0010] Optionally, the first magnetic bowl includes a first flat plate, a first side plate arranged at the edge of the first flat plate, and a second flat plate arranged at an end of the first side plate away from the first flat plate, the central magnetic steel is arranged on the first flat plate and is spaced apart from the first side plate to form a first magnetic gap; the second flat plate extends to the first surface of the first side magnetic steel, and the first side magnetic steel is clamped between the second flat plate and the second magnetic bowl; the second magnetic bowl and the first side magnetic steel are both spaced apart from the first side plate to form a second magnetic gap; the third magnetic bowl includes a third annular flat plate and a second side plate arranged at the inner edge of the third flat plate, the second side plate extends in a direction away from the first surface of the third flat plate to be flush with the fourth magnetic bowl, the fourth magnetic bowl is aligned with the inner wall of the second side magnetic steel, and the second side magnetic steel and the second side plate are spaced apart to form a third magnetic gap.

[0011] Optionally, the first basin is supported on the first surface of the first side magnetic steel, and the first bass voice coil is inserted into the first magnetic gap; the second basin is supported on the first surface of the second side magnetic steel, and the tweeter voice coil is inserted into the third magnetic gap; the third basin is supported on the second surface of the second magnetic bowl, and the second bass voice coil is inserted into the second magnetic gap.

[0012] Optionally, the side magnetic steel includes a third side magnetic steel arranged on the periphery of the central magnetic steel, the central magnetic steel and the third side magnetic steel are magnetized in reverse, and the third side magnetic steel and the central magnetic steel are spaced apart; the magnetic circuit system also includes a fifth magnetic bowl, a sixth magnetic bowl and a seventh magnetic bowl, the fifth magnetic bowl is used to accommodate the central magnetic steel, the sixth magnetic bowl is arranged on the second surface of the third side magnetic steel and is aligned with the third side magnetic steel, and the seventh magnetic bowl cover is arranged on the first surface of the central magnetic steel and is aligned with the central magnetic steel; the fifth magnetic bowl includes a fourth flat plate, a fourth side plate arranged on the edge of the fourth flat plate, a fifth flat plate arranged on an end of the fourth side plate away from the fourth flat plate, and a fifth side plate arranged in the central area of ​​the fourth flat plate, the fifth side plate extends from the first surface of the fourth flat plate to be flush with the seventh magnetic bowl; the central magnetic steel is arranged on the fourth flat plate, the central magnetic steel and the fourth side plate are spaced apart to form a fourth magnetic gap, and the central magnetic steel and the fifth side plate are spaced apart to form a fifth magnetic gap.

[0013] Optionally, the fifth flat plate extends to the first surface of the third side magnetic steel, and the third side magnetic steel is clamped between the fifth flat plate and the sixth magnetic bowl; the third side magnetic steel and the sixth magnetic bowl are both spaced apart from the fourth side plate to form a sixth magnetic gap; the first basin rack is supported on the first surface of the third side magnetic steel, and the first bass voice coil is inserted into the fourth magnetic gap; the second basin rack is supported on the first surface of the seventh magnetic bowl, and the tweeter voice coil is inserted into the fifth magnetic gap; the third basin rack is supported on the second surface of the sixth magnetic bowl, and the second bass voice coil is inserted into the sixth magnetic gap.

[0014] Optionally, the composite speaker further includes a shell, which includes a first shell and a second shell that are interconnected, the magnetic circuit system, the vibration system and the basin are accommodated in the first shell, and the first basin, the magnetic circuit system and the second basin divide the shell into a plurality of sound cavities.

[0015] Optionally, the aperture of the first shell is larger than that of the second shell, the magnetic circuit system, the vibration system and the basin are assembled to form a sound unit, a first baffle is provided in the cavity area of ​​the first shell away from the second shell, the first baffle is arranged corresponding to the second shell, and the sound unit is arranged in the area surrounded by the first baffle and the inner wall of the first shell; a first sound front cavity is formed between the first shell and the first surface of the sound unit, and a second sound front cavity is formed between the first shell and the second surface of the sound unit; the end plates at one end of the first shell extend to the first basin and the second basin respectively, the second shell is connected with the sound unit to form a sound rear cavity, and the sound unit and the first shell form a closed high-frequency rear cavity; a first sound outlet is provided at one end of the first shell, and the first sound front cavity and the second sound front cavity are connected to the first sound outlet after merging; the second shell is provided with a second sound outlet connected to the sound rear cavity.

[0016] Optionally, the shell further includes a second partition and a third partition which are arranged in the first shell and connected to the first surface and the second surface of the first partition; the first shell, the first surface of the sound unit and the second partition form a first sound front cavity; the second shell, the second surface of the sound unit and the third partition form a second sound front cavity; the first shell has two first sound outlets at one end away from the second shell, and the first sound front cavity and the second sound front cavity are respectively connected to one of the first sound outlets.

[0017] Optionally, a leakage hole is provided in the area where the magnetic circuit system is connected to the first shell.

[0018] The beneficial effects of the present invention are as follows: the composite loudspeaker of the present invention can emit sound on both sides, thereby increasing the effective sound radiation area, increasing the frequency response, reducing the structural nonlinearity, reducing the distortion, and improving the sound quality of the loudspeaker; the vibration system includes both a bass sound unit and a tweeter unit, thereby compensating for the deficiency of the high-frequency frequency response of the loudspeaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the first structure of the composite loudspeaker of the present invention.

[0020] Figure 2 It is an exploded schematic diagram of the first structure of the composite loudspeaker of the present invention.

[0021] Figure 3 It is a top view of the first structure of the composite loudspeaker of the present invention.

[0022] Figure 4 for Figure 3 Section view along AA.

[0023] Figure 5 It is a schematic diagram of the magnetization direction of the magnetic circuit system in the first structure of the composite loudspeaker of the present invention.

[0024] Figure 6 It is an exploded schematic diagram of the second structure of the composite loudspeaker of the present invention.

[0025] Figure 7 It is a top view of the second structure of the composite loudspeaker of the present invention.

[0026] Figure 8 for Figure 7 Section view along BB.

[0027] Fig. 9 It is a schematic diagram of the magnetization direction of the magnetic circuit system in the second structure of the composite loudspeaker of the present invention.

[0028] Fig.10 It is a schematic diagram of the first structure of the shell of the composite loudspeaker of the present invention.

[0029] Fig.11 for Fig.10 Schematic diagram of the distribution of the sound cavity inside the composite loudspeaker shown.

[0030] Fig.12 It is a schematic diagram of the second structure of the shell of the composite loudspeaker of the present invention.

[0031] Fig.13 for Fig.12 Schematic diagram of the distribution of the sound cavity inside the composite loudspeaker shown.

[0032] Fig.14 The figure is a schematic diagram of the location of the leakage hole of the composite loudspeaker of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0034] Example:

[0035] The present invention provides a composite loudspeaker, see Figures 1 to 9As shown, it includes a basin frame 1, a vibration system 2 respectively fixed to the basin frame 1 and a magnetic circuit system 3 for driving the vibration system 2 to vibrate and produce sound; the vibration system 2 includes a first woofer 21 and a tweeter 22 arranged on the first surface a of the magnetic circuit system 3 and a second woofer 23 arranged on the second surface b of the magnetic circuit system 3, the first woofer 21 and the tweeter 22 are coaxially arranged, and the first woofer 21 is arranged around the outside of the tweeter 22; the magnetic circuit system 3 includes a central magnetic steel 301 and a side magnetic steel 302 arranged on the periphery of the central magnetic steel 301; the central magnetic steel 301 and the side magnetic steel 302 are magnetized in reverse, that is, the magnetization directions of the central magnetic steel 301 and the side magnetic steel 302 are opposite.

[0036] The composite loudspeaker of the present invention is provided with sound units on both sides of the magnetic circuit system 3, which can emit sound from both sides, thereby increasing the effective sound radiation area, increasing the frequency response, reducing the structural nonlinearity, reducing the distortion, and improving the sound quality of the loudspeaker. The vibration system 2 includes a bass sound unit and a tweeter 22 at the same time, and the setting of the tweeter 22 can make up for the deficiency of the bass sound unit in the high-frequency frequency response. The tweeter 22 and the first bass unit 21 of the first side a are driven in one way, and the second bass unit 23 of the second side b is driven in another way. In the low-frequency two-way driving, the first side a and the second side b emit sound at the same time, that is, reverse vibration; in the middle and high frequencies, the sound isolation can be further enhanced by the algorithm according to actual needs, thereby improving the isolation of the loudspeaker. The central magnetic steel 301 and the side magnetic steel 302 in the magnetic circuit system 3 are magnetized in reverse, so that the first side a and the second side b of the magnetic circuit system emit sound in the same phase, that is, anti-phase vibration, which can reduce the shell vibration. The first woofer 21, the tweeter 22 and the second woofer 23 in the vibration system 2 share a set of the magnetic circuit system 3, which simplifies the overall structure of the speaker, reduces the volume of the speaker, reduces the occupied space, and facilitates the miniaturization design of the speaker. The speaker of the present invention is suitable for electronic devices with high privacy for voice, such as mobile phones, AR or VR glasses, or electronic devices such as tablet computers.

[0037] The basket 1 includes a first basket 11 and a second basket 12 arranged on the first side a of the magnetic circuit system 3, and a third basket 13 arranged on the second side b of the magnetic circuit system 3; the first basket 11 and the second basket 12 are coaxially arranged, and the first basket 11 is arranged around the outer periphery of the second basket 12; the first woofer 21 is supported on a side of the first basket 11 away from the magnetic circuit system 3, the tweeter 22 is supported on a side of the second basket 12 away from the magnetic circuit system 3, and the second woofer 23 is supported on a side of the third basket 13 away from the magnetic circuit system 3.

[0038] The first bass unit 21 includes a first bass voice coil 211 and a first bass diaphragm 212, the first bass diaphragm 212 is arranged on the side of the first bass voice coil 211 away from the magnetic circuit system 3 and supported by the first basin frame 11; the tweeter unit 22 includes a tweeter voice coil 221 and a tweeter diaphragm 222, the tweeter diaphragm 222 is arranged on the side of the tweeter voice coil 221 away from the magnetic circuit system 3 and supported by the second basin frame 12; the second bass unit 23 includes a second bass voice coil 231 and a second bass diaphragm 232 arranged on the second surface b of the magnetic circuit system 3, the second bass diaphragm 232 is arranged on the side of the second bass voice coil 231 away from the magnetic circuit system 3 and supported by the third basin frame 13.

[0039] See also Figures 2 to 9 As shown, the first bass diaphragm 212 is annular; the first bass diaphragm 212 includes a first fold ring 2121, a central portion 2122 and a second fold ring 2123 connected in sequence from the inside to the outside, the inner edge of the first fold ring 2121 is connected to the second basin frame 12, the outer edge is connected to the first bass voice coil 211, and the outer edge of the second fold ring 2123 is connected to the first basin frame 11. Figure 4 As shown, in some embodiments, the first fold ring 2121 and the second fold ring 2123 may be structures that bulge upward. In other embodiments, the first fold ring 2121 and the second fold ring 2123 may also be structures that are concave downward. The inner direction refers to the direction close to the central axis of the speaker, and the outer direction refers to the direction away from the central axis of the speaker.

[0040] See also Figures 2 to 5As shown, it is a first structure of the speaker provided by the present invention, the side magnetic steel 302 includes a first side magnetic steel 3021 arranged on the periphery of the central magnetic steel 301 and a second side magnetic steel 3022 arranged on the first surface a of the central magnetic steel 301, the first side magnetic steel 3021 and the central magnetic steel 301 are arranged at intervals, and the first side magnetic steel 3021 and the second side magnetic steel 3022 are magnetized in the opposite direction to the central magnetic steel 301; the magnetic circuit system 3 also includes a first magnetic bowl 303, a second magnetic bowl 304, a third magnetic bowl 305 and a fourth magnetic bowl 306, the first magnetic bowl 303 is used to accommodate the central magnetic steel 30 1, the second magnetic bowl 304 is arranged on the second surface b of the first side magnetic steel 3021 and is aligned with the first side magnetic steel 3021, the third magnetic bowl 305 is covered on the first surface a of the central magnetic steel 301, the second side magnetic steel 3022 is arranged on the first surface a of the third magnetic bowl 305, and the fourth magnetic bowl 306 is covered on the second side magnetic steel 3022; the first basin frame 11 is supported on the first surface a of the first side magnetic steel 3021, the second basin frame 12 is supported on the first surface a of the second side magnetic steel 3022, and the third basin frame 13 is supported on the second surface b of the second magnetic bowl 304.

[0041] The central magnetic steel 301 is in an annular structure, and the second side magnetic steel 3022 is also in an annular structure. The first magnetic bowl 303, the second magnetic bowl 304, the third magnetic bowl 305 and the fourth magnetic bowl 306 are all made of low-carbon steel soft magnetic material.

[0042] In one embodiment of the present invention, the first magnetic bowl 303 includes a first flat plate 3031, a first side plate 3032 arranged at the edge of the first flat plate 3031, and a second flat plate 3033 arranged at an end of the first side plate 3032 away from the first flat plate 3031, the central magnetic steel 301 is arranged on the first flat plate 3031, and is spaced apart from the first side plate 3032 to form a first magnetic gap 307; the second flat plate 3033 extends to the first surface a of the first side magnetic steel 3021, and the first side magnetic steel 3021 is sandwiched between the second flat plate 3033 and the second magnetic bowl 304; the second magnetic bowl 304 and the first side magnetic steel 3021 are both spaced apart from the first side plate 3032 to form a second magnetic gap 308; the third magnetic bowl 305 includes a ring-shaped third flat plate 3051 and a third magnetic steel 305 arranged at the first side plate 3032. The second side plate 3052 is on the inner edge of the third flat plate 3051, and the second side plate 3052 extends in the direction away from the first surface a of the third flat plate 3051 to be flush with the fourth magnetic bowl 306. The fourth magnetic bowl 306 is aligned with the inner wall of the second side magnetic steel 3022, and the second side magnetic steel 3022 and the second side plate 3052 are spaced apart to form a third magnetic gap 309; the first basin frame 11 is supported on the first surface a of the first side magnetic steel 3021, and the first bass voice coil 211 is inserted into the first magnetic gap 307; the second basin frame 12 is supported on the first surface a of the second side magnetic steel 3022, and the treble voice coil 221 is inserted into the third magnetic gap 309; the third basin frame 13 is supported on the second surface b of the second magnetic bowl 304, and the second bass voice coil 231 is inserted into the second magnetic gap 308.

[0043] The outer wall of the first side magnetic steel 3021 is aligned / aligned with the outer wall of the second magnetic bowl 304 , the outer wall of the first basin frame 11 is aligned with the outer wall of the first side magnetic steel 3021 ; the outer wall of the third basin frame 13 is aligned with the outer wall of the second magnetic bowl 304 .

[0044] See also Figures 6 to 9As shown, it is the second structure of the speaker provided by the present invention. In another specific embodiment of the present invention, the structure of the magnetic circuit system 3 is adjusted. Specifically, the side magnetic steel 302 includes a third side magnetic steel 3023 arranged on the periphery of the central magnetic steel 301, the central magnetic steel 301 and the third side magnetic steel 3023 are magnetized in reverse, and the third side magnetic steel 3023 and the central magnetic steel 301 are arranged at intervals; the magnetic circuit system 3 also includes a fifth magnetic bowl 310, a sixth magnetic bowl 311 and a seventh magnetic bowl 312, the fifth magnetic bowl 310 is used to accommodate the central magnetic steel 301, the sixth magnetic bowl 311 is arranged on the second surface b of the third side magnetic steel 3023, and is aligned with the third side magnetic steel 3023, the seventh magnetic bowl 312 is covered on the first surface a of the central magnetic steel 301, and is aligned with the central magnetic steel 301;

[0045] The fifth magnetic bowl 310 includes a fourth flat plate 3101, a fourth side plate 3102 arranged at the edge of the fourth flat plate 3101, a fifth flat plate 3103 arranged at one end of the fourth side plate 3102 away from the fourth flat plate 3101, and a fifth side plate 3104 arranged in the central area of ​​the fourth flat plate 3101, wherein the fifth side plate 3104 extends from the first surface a of the fourth flat plate 3101 to be flush with the seventh magnetic bowl 312; the central magnetic steel 301 is arranged on the fourth flat plate 3101, and the central magnetic steel 301 and the fourth side plate 3102 are spaced apart to form a fourth magnetic gap 313; the fifth flat plate 3103 extends to the first surface a of the third side magnetic steel 3023, and the third side magnetic steel 3023 is clamped in the Between the fifth flat plate 3103 and the sixth magnetic bowl 311; the third side magnetic steel 3023 and the sixth magnetic bowl 311 are both spaced apart from the fourth side plate 3102 to form a sixth magnetic gap 315; the center magnetic steel 301 and the fifth side plate 3104 are spaced apart to form a fifth magnetic gap 314; the first basin rack 11 is supported on the first side a of the third side magnetic steel 3023, and the first bass voice coil 211 is inserted into the fourth magnetic gap 313; the second basin rack 12 is supported on the first side a of the seventh magnetic bowl 312, and the treble voice coil 221 is inserted into the fifth magnetic gap 314; the third basin rack 13 is supported on the second side b of the sixth magnetic bowl 311, and the second bass voice coil 231 is inserted into the sixth magnetic gap 315.

[0046] The outer wall of the third side magnetic steel 3023 is aligned / aligned with the outer wall of the sixth magnetic bowl 311, and the outer wall of the first basin frame 11 is aligned with the outer wall of the third side magnetic steel 3023; the outer wall of the third basin frame 13 is aligned with the outer wall of the sixth magnetic bowl 311.

[0047] For further information, see Figures 10 to 13As shown, the loudspeaker of the present invention further comprises a shell 4, wherein the shell 4 comprises a first shell 41 and a second shell 42 which are interconnected, wherein the magnetic circuit system 3, the vibration system 2 and the basin frame 1 are accommodated in the first shell 41, and the first basin frame 11, the magnetic circuit system 3 and the second basin frame 12 divide the shell 4 into a plurality of sound cavities; the aperture of the first shell 41 is larger than the aperture of the second shell 42, the magnetic circuit system 3, the vibration system 2 and the basin frame 1 are assembled to form a sounding unit 100, and a first partition plate 43 is provided in the cavity area of ​​the first shell 41 away from the second shell 42, the first partition plate 43 is arranged corresponding to the second shell 42, and the sounding unit 100 is arranged in the area enclosed by the first partition plate 43 and the inner wall of the first shell 41; the first A first sound front cavity 51 is formed between a shell 41 and the first surface a of the sound-emitting unit 100, and a second sound front cavity 52 is formed between the first shell 41 and the second surface b of the sound-emitting unit 100; the end plate at one end of the first shell 41 extends to the first basin frame 11 and the second basin frame 12 respectively, the second shell 42 is connected with the sound-emitting unit 100 to form a sound rear cavity 53, and the sound-emitting unit 100 and the first shell 41 form a closed high-frequency rear cavity 54; a first sound outlet 411 is provided at one end of the first shell 41, and the first sound front cavity 51 and the second sound front cavity 52 are connected to the first sound outlet 411 after merging; the second shell 42 is provided with a second sound outlet 421 connected to the sound rear cavity 53. In the embodiment of the present invention, the first sound front cavity 51 and the second sound front cavity 52 merge into the same first sound outlet 411, and the sound is emitted from both sides, which increases the effective radiation area and thus improves the frequency response; in addition, the voice coil temperature can be reduced, and the reliability of the product can be improved. The specific structure of the housing 4 can be selected according to actual needs. Fig.10 and Fig.11 As shown, the first shell 41 and the second shell 42 are both in the shape of a square prism, the aperture of the first shell 41 is larger than the aperture of the second shell 42, the sound unit 100 includes a long side and a short side, the long side wall of the sound unit 100 is connected to the inner wall of the side plate of the first shell 41, the short side wall on one side of the sound unit 100 is connected to the inner wall of one end of the first shell 41 close to the second shell 42, and the first partition plate 43 is connected to the other short side of the sound unit 100.

[0048] In another specific embodiment, see Fig.12 and Fig.13As shown, compared with the above-mentioned shell 4, the shell 4 also includes a second baffle 44 and a third baffle 45 which are arranged in the first shell 41 and connected to the first surface a and the second surface b of the first baffle 43. The first shell 41, the first surface a of the sound-emitting unit 100 and the second baffle 44 are arranged to form a first sound-emitting front cavity 51, and the second shell 42, the second surface b of the sound-emitting unit 100 and the third baffle 45 are arranged to form a second sound-emitting front cavity 52. ​​The first shell 41 has two first sound outlets 411 at one end away from the second shell 42, and the first sound-emitting front cavity 51 and the second sound-emitting front cavity 52 are respectively connected to one of the first sound outlets 411. In the embodiment of the present invention, the first sound-emitting front cavity 51 and the second sound-emitting front cavity 52 are separated to emit sound, and the effect of private calls can be improved by setting the position of the sound outlet in this structure.

[0049] For further information, see Fig.14 As shown, a leakage hole 6 is provided in the area where the magnetic circuit system 3 is connected to the first shell 41. The setting of the leakage hole 6 can ensure air leakage, ensure air circulation and sound transmission, and further ensure the quality of the speaker. Optionally, the number and location of the leakage hole 6 can be specifically set according to actual needs.

[0050] Optionally, in some embodiments, the center magnetic steel 301 is in the shape of a rectangular parallelepiped as a whole. When the speaker adopts the first structure, the first side magnetic steel 3021 includes a first long side magnetic steel arranged corresponding to the long side of the center magnetic steel 301, and a first short side magnetic steel arranged corresponding to the short side of the center magnetic steel 301; the leakage hole 6 can be opened in the first long side magnetic steel, and the setting position of the leakage hole 6 is not limited; the leakage hole 6 can also be arranged on the first magnetic bowl 303 and / or the second magnetic bowl 304 connected to the first long side magnetic steel. When the speaker adopts the second structure, the third side magnetic steel 3023 includes a second long side magnetic steel arranged corresponding to the long side of the center magnetic steel 301 and a second short side magnetic steel arranged corresponding to the short side of the center magnetic steel 301; the leakage hole 6 can be opened in the second long side magnetic steel, and the leakage hole 6 can also be opened in the fifth magnetic bowl 310 and / or the sixth magnetic bowl 311 connected to the second long side magnetic steel.

[0051] It should be noted that the loudspeaker structures obtained by freely combining the vibration system 2, the magnetic circuit system 3 and the housing 4 disclosed in the above embodiments of the present invention all fall within the protection scope of the present invention.

[0052] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A composite loudspeaker, characterized in that: The invention comprises a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound; the vibration system comprises a first woofer and a tweeter arranged on a first surface of the magnetic circuit system, and a second woofer arranged on a second surface of the magnetic circuit system, the first woofer and the tweeter are coaxially arranged, and the first woofer is arranged around the outside of the tweeter; the magnetic circuit system comprises a central magnet and a side magnet arranged on the periphery of the central magnet; the central magnet and the side magnet are magnetized in opposite directions; The basin frame includes a first basin frame and a second basin frame provided on a first surface of the magnetic circuit system, the first basin frame and the second basin frame are coaxially arranged, and the first basin frame is arranged around the outer periphery of the second basin frame; The composite loudspeaker further comprises a housing, the housing comprising a first housing and a second housing which are interconnected, the magnetic circuit system, the vibration system and the basin frame are accommodated in the first housing, and the first basin frame, the magnetic circuit system and the second basin frame divide the housing into a plurality of sound cavities; The aperture of the first shell is larger than that of the second shell, the magnetic circuit system, the vibration system and the basin frame are assembled to form a sound unit, a first baffle is provided in the cavity of the first shell away from the second shell, the first baffle is arranged corresponding to the opening of the second shell, and the sound unit is arranged in the area formed by the first baffle and the inner wall of the first shell; a first sound front cavity is formed between the first shell and the first surface of the sound unit, and a second sound front cavity is formed between the first shell and the second surface of the sound unit; the end plates at one end of the first shell extend to the first basin frame and the second basin frame respectively, the second shell is connected with the sound unit to form a sound rear cavity, and the sound unit and the first shell form a closed high-frequency rear cavity; a first sound outlet is provided at one end of the first shell, and the first sound front cavity and the second sound front cavity are connected to the first sound outlet after merging; the second shell is provided with a second sound outlet connected to the sound rear cavity.

2. The composite loudspeaker according to claim 1, characterized in that: And a third basin frame arranged on the second side of the magnetic circuit system; the first woofer is supported on a side of the first basin frame away from the magnetic circuit system, the tweeter is supported on a side of the second basin frame away from the magnetic circuit system, and the second woofer is supported on a side of the third basin frame away from the magnetic circuit system.

3. The composite loudspeaker according to claim 2, characterized in that: The first woofer unit includes a first woofer voice coil and a first woofer diaphragm, which is arranged on the side of the first woofer voice coil away from the magnetic circuit system and supported by the first basin frame; the tweeter unit includes a tweeter voice coil and a tweeter diaphragm, which is arranged on the side of the tweeter voice coil away from the magnetic circuit system and supported by the second basin frame; the second woofer unit includes a second woofer voice coil and a second woofer diaphragm arranged on the second surface of the magnetic circuit system, and the second woofer diaphragm is arranged on the side of the second woofer voice coil away from the magnetic circuit system and supported by the third basin frame.

4. The composite loudspeaker according to claim 3, characterized in that: The side magnets include a first side magnet disposed on the periphery of the center magnet and a second side magnet disposed on the first surface of the center magnet, the first side magnet and the center magnet are spaced apart, and the first side magnet and the second side magnet are magnetized in the opposite direction to the center magnet; the magnetic circuit system also includes a first magnetic bowl, a second magnetic bowl, a third magnetic bowl and a fourth magnetic bowl, the first magnetic bowl is used to accommodate the center magnet, the second magnetic bowl is disposed on the second surface of the first side magnet and aligned with the first side magnet, the third magnetic bowl cover is disposed on the first surface of the center magnet, the second side magnet is disposed on the first surface of the third magnetic bowl, and the fourth magnetic bowl cover is disposed on the second side magnet.

5. The composite loudspeaker according to claim 4, characterized in that: The first magnetic bowl includes a first flat plate, a first side plate arranged at the edge of the first flat plate, and a second flat plate arranged at an end of the first side plate away from the first flat plate, the central magnetic steel is arranged on the first flat plate, and is spaced apart from the first side plate to form a first magnetic gap; the second flat plate extends to the first surface of the first side magnetic steel, and the first side magnetic steel is clamped between the second flat plate and the second magnetic bowl; the second magnetic bowl and the first side magnetic steel are both spaced apart from the first side plate to form a second magnetic gap; the third magnetic bowl includes a third annular flat plate and a second side plate arranged at the inner edge of the third flat plate, the second side plate extends in a direction away from the first surface of the third flat plate to be flush with the fourth magnetic bowl, the fourth magnetic bowl is aligned with the inner wall of the second side magnetic steel, and the second side magnetic steel and the second side plate are spaced apart to form a third magnetic gap.

6. The composite loudspeaker according to claim 5, characterized in that: The first basin is supported on the first surface of the first side magnetic steel, and the first bass voice coil is inserted into the first magnetic gap; the second basin is supported on the first surface of the second side magnetic steel, and the tweeter voice coil is inserted into the third magnetic gap; the third basin is supported on the second surface of the second magnetic bowl, and the second bass voice coil is inserted into the second magnetic gap.

7. The composite loudspeaker according to claim 3, characterized in that: The side magnetic steel includes a third side magnetic steel arranged on the periphery of the central magnetic steel, the central magnetic steel and the third side magnetic steel are magnetized in reverse, and the third side magnetic steel and the central magnetic steel are spaced apart; the magnetic circuit system also includes a fifth magnetic bowl, a sixth magnetic bowl and a seventh magnetic bowl, the fifth magnetic bowl is used to accommodate the central magnetic steel, the sixth magnetic bowl is arranged on the second surface of the third side magnetic steel and aligned with the third side magnetic steel, the seventh magnetic bowl cover is arranged on the first surface of the central magnetic steel and aligned with the central magnetic steel; the fifth magnetic bowl includes a fourth flat plate, a fourth side plate arranged on the edge of the fourth flat plate, a fifth flat plate arranged on an end of the fourth side plate away from the fourth flat plate, and a fifth side plate arranged in the central area of ​​the fourth flat plate, the fifth side plate extends from the first surface of the fourth flat plate to be flush with the seventh magnetic bowl; the central magnetic steel is arranged on the fourth flat plate, the central magnetic steel and the fourth side plate are spaced apart to form a fourth magnetic gap, and the central magnetic steel and the fifth side plate are spaced apart to form a fifth magnetic gap.

8. The composite loudspeaker according to claim 7, characterized in that: The fifth flat plate extends to the first surface of the third side magnetic steel, and the third side magnetic steel is clamped between the fifth flat plate and the sixth magnetic bowl; the third side magnetic steel and the sixth magnetic bowl are both spaced apart from the fourth side plate to form a sixth magnetic gap; the first basin rack is supported on the first surface of the third side magnetic steel, and the first bass voice coil is inserted into the fourth magnetic gap; the second basin rack is supported on the first surface of the seventh magnetic bowl, and the treble voice coil is inserted into the fifth magnetic gap; the third basin rack is supported on the second surface of the sixth magnetic bowl, and the second bass voice coil is inserted into the sixth magnetic gap.

9. The composite loudspeaker according to claim 1, characterized in that: The shell also includes a second partition and a third partition which are arranged in the first shell and connected to the first surface and the second surface of the first partition. The first shell, the first surface of the sound unit and the second partition form a first sound front cavity. The second shell, the second surface of the sound unit and the third partition form a second sound front cavity. The first shell has two first sound outlets at one end away from the second shell, and the first sound front cavity and the second sound front cavity are respectively connected to one of the first sound outlets.

10. The composite loudspeaker according to claim 1, characterized in that: A leakage hole is provided in the area where the magnetic circuit system is connected to the first shell.

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