Composite loudspeaker

Abstract

The present invention provides a composite loudspeaker, comprising a basket, and a vibration system and a magnetic circuit system which are separately fixed to the basket, the magnetic circuit system driving the vibration system to vibrate to produce sound. The vibration system comprises a first woofer and a tweeter which are arranged on a first side of the magnetic circuit system, and a second woofer arranged on a second side of the magnetic circuit system. The first woofer and the tweeter are coaxially arranged, and the first woofer is arranged around the outer side of the tweeter. The magnetic circuit system comprises a central magnetic steel and an edge magnetic steel arranged on the outer periphery of the central magnetic steel. The central magnetic steel and the edge magnetic steel are oppositely magnetized. The composite loudspeaker of the present invention can produce sound on both sides, thereby improving an effective sound radiation area, improving frequency response, reducing structural nonlinearity, reducing distortion, and improving sound quality of the loudspeaker. The vibration system comprises both the woofers and the tweeter, thereby compensating for a lack of high-frequency response of the loudspeaker.

Description

A composite loudspeaker Technical Field

[0001] This invention relates to the field of electroacoustic technology, and more specifically to a composite loudspeaker. Background Technology

[0002] The AR / VR glasses market is growing rapidly, but the speakers currently equipped with AR / VR glasses are often single speakers on one side, either speaker boxes or single-driver speakers. These typically have the following drawbacks: 1. Although a single speaker driver is a natural dipole with good isolation in low frequencies, the isolation in the mid-to-high frequencies has peaks and valleys, which is not as expected; 2. Current speakers often have large valleys in the high-frequency range, affecting the listening experience.

[0003] Therefore, it is necessary to provide a composite loudspeaker with good isolation and excellent frequency response in both high and low frequencies. Technical issues

[0004] The purpose of this invention is to provide a composite loudspeaker that has good isolation and excellent frequency response in both high and low frequencies. Technical solutions

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

[0006] This invention provides a composite loudspeaker, comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound; the vibration system includes a first woofer and a tweeter disposed on a first side of the magnetic circuit system, and a second woofer disposed on a second side of the magnetic circuit system, wherein 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 magnet and a periphery of the central magnet; the central magnet and the periphery are magnetized in opposite directions.

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

[0008] Optionally, the first bass unit includes a first bass voice coil and a first bass diaphragm, the first bass diaphragm being disposed on the side of the first bass voice coil away from the magnetic circuit system and supported by the first frame; the tweeter includes a tweet voice coil and a tweet diaphragm, the tweet diaphragm being disposed on the side of the tweet voice coil away from the magnetic circuit system and supported by the second frame; the second bass unit includes a second bass voice coil and a second bass diaphragm disposed on the second surface of the magnetic circuit system, the second bass diaphragm being disposed on the side of the second bass voice coil away from the magnetic circuit system and supported by the third frame.

[0009] Optionally, the edge magnet includes a first edge magnet disposed around the periphery of the central magnet and a second edge magnet disposed on a first surface of the central magnet. The first edge magnet and the central magnet are spaced apart, and both the first edge magnet and the second edge magnet are magnetized in the opposite direction to the central magnet. The magnetic circuit system further includes a first magnetic cup, a second magnetic cup, a third magnetic cup, and a fourth magnetic cup. The first magnetic cup is used to house the central magnet. The second magnetic cup is disposed on a second surface of the first edge magnet and aligned with the first edge magnet. The third magnetic cup covers the first surface of the central magnet. The second edge magnet is disposed on the first surface of the third magnetic cup. The fourth magnetic cup covers the second edge magnet.

[0010] Optionally, the first magnetic bowl includes a first flat plate, a first side plate disposed on the edge of the first flat plate, and a second flat plate disposed on the end of the first side plate away from the first flat plate. The central magnet is disposed on the first flat plate and 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 magnet, and the first side magnet is sandwiched between the second flat plate and the second magnetic bowl. The second magnetic bowl and the first side magnet are both spaced apart from the first side plate to form a second magnetic gap. The third magnetic bowl includes a ring-shaped third flat plate and a second side plate disposed on 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 magnet, and the second side magnet and the second side plate are spaced apart to form a third magnetic gap.

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

[0012] Optionally, the edge magnet includes a third edge magnet disposed around the periphery of the central magnet, the central magnet and the third edge magnet are magnetized in opposite directions, and the third edge magnet and the central magnet are spaced apart; the magnetic circuit system further includes a fifth magnetic cup, a sixth magnetic cup and a seventh magnetic cup, the fifth magnetic cup is used to house the central magnet, the sixth magnetic cup is disposed on the second surface of the third edge magnet and is aligned with the third edge magnet, the seventh magnetic cup is disposed on the first surface of the central magnet and is aligned with the central magnet; the fifth magnetic cup includes a fourth flat plate, a fourth side plate disposed on the edge of the fourth flat plate, a fifth flat plate disposed on the end of the fourth side plate away from the fourth flat plate, and a fifth side plate disposed in the central region of the fourth flat plate, the fifth side plate extending from the first surface of the fourth flat plate to be flush with the seventh magnetic cup; the central magnet is disposed on the fourth flat plate, the central magnet and the fourth side plate are spaced apart to form a fourth magnetic gap, and the central magnet and the fifth side plate are spaced apart to form a fifth magnetic gap.

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

[0014] Optionally, the composite loudspeaker further includes a housing, which includes a first housing and a second housing that are interconnected. The magnetic circuit system, the vibration system, and the frame are housed in the first housing, and the first frame, the magnetic circuit system, and the second frame divide the housing into multiple sound-emitting cavities.

[0015] Optionally, the aperture of the first housing is larger than that of the second housing. The magnetic circuit system, vibration system, and frame are assembled to form a sound-generating unit. A first partition is provided in the cavity region of the first housing away from the second housing. The first partition is correspondingly arranged with the second housing. The sound-generating unit is located in the region enclosed by the first partition and the inner wall of the first housing. A first sound-generating front cavity is formed between the first housing and the first surface of the sound-generating unit. A second sound-generating front cavity is formed between the first housing and the second surface of the sound-generating unit. An end plate at one end of the first housing extends to the first frame and the second frame, respectively. The communication between the second housing and the sound-generating unit forms a sound-generating rear cavity. The sound-generating unit and the first housing form a closed high-frequency rear cavity. A first sound outlet is provided at one end of the first housing. The first sound outlet and the second sound outlet merge and communicate with the first sound outlet. The second housing is provided with a second sound outlet communicating with the sound-generating rear cavity.

[0016] Optionally, the housing further includes a second partition and a third partition disposed within the first housing and connected to the first and second surfaces of the first partition. The first housing, the first surface of the sound-emitting unit, and the second partition form a first sound-emitting front cavity, and the second housing, the second surface of the sound-emitting unit, and the third partition form a second sound-emitting front cavity. The first housing has two first sound outlets at one end away from the second housing, and the first and second sound-emitting front cavities 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 connects to the first housing. Beneficial effects

[0018] The beneficial effects of the present invention are as follows: the composite loudspeaker of the present invention can emit sound from both sides, which increases the effective sound radiation area, improves the frequency response, reduces structural nonlinearity, reduces distortion, and improves the sound quality of the loudspeaker; the vibration system includes both a bass unit and a tweeter unit, which makes up for the lack of high-frequency response of the loudspeaker. Attached Figure Description

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

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

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

[0022] Figure 4 is a cross-sectional view of Figure 3 along AA.

[0023] Figure 5 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 is an exploded view of the second structure of the composite loudspeaker of the present invention.

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

[0026] Figure 8 is a cross-sectional view of Figure 7 along BB.

[0027] Figure 9 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] Figure 10 is a schematic diagram of the first structure of the housing of the composite loudspeaker of the present invention.

[0029] Figure 11 is a schematic diagram of the distribution of the sound-emitting cavity inside the composite loudspeaker shown in Figure 10.

[0030] Figure 12 is a schematic diagram of the second structure of the housing of the composite loudspeaker of the present invention.

[0031] Figure 13 is a schematic diagram of the distribution of the sound-emitting cavity inside the composite loudspeaker shown in Figure 12.

[0032] Figure 14 is a schematic diagram showing the location of the leakage hole in the composite loudspeaker of the present invention. Embodiments of the present invention

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0034] This invention provides a composite loudspeaker, as shown in Figures 1 to 9, comprising a frame 1, a vibration system 2 fixed to the 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 bass unit 21 and a tweeter 22 disposed on a first surface a of the magnetic circuit system 3, and a second bass unit 23 disposed on a second surface b of the magnetic circuit system 3. The first bass unit 21 and the tweeter 22 are coaxially arranged, and the first bass unit 21 is arranged around the outside of the tweeter 22. The magnetic circuit system 3 includes a central magnet 301 and a side magnet 302 disposed on the outer periphery of the central magnet 301. The central magnet 301 and the side magnet 302 are magnetized in opposite directions, that is, the magnetization directions of the central magnet 301 and the side magnet 302 are opposite.

[0035] The composite loudspeaker of this invention has sound-emitting units on both sides of the magnetic circuit system 3, enabling bi-directional sound emission, increasing the effective sound radiation area, improving frequency response, reducing structural nonlinearity, reducing distortion, and improving the sound quality of the loudspeaker. The vibration system 2 includes both a bass unit and a tweeter unit 22. The tweeter unit 22 compensates for the bass unit's insufficient high-frequency response. The tweeter unit 22 and the first bass unit 21 on the first side a are driven in one path, while the second bass unit 23 on the second side b is driven in another path. In low frequencies, the two paths drive the first side a and the second side b to emit sound simultaneously, i.e., they vibrate in opposite directions. In mid-to-high frequencies, the sound isolation can be further enhanced through algorithms according to actual needs, thereby improving the loudspeaker's isolation. The center magnet 301 and the side magnet 302 in the magnetic circuit system 3 are magnetized in opposite directions, causing the first side a and the second side b of the magnetic circuit system to emit sound in phase, i.e., to vibrate in opposite phase, which can reduce shell vibration. The first bass unit 21, the tweeter 22, and the second bass unit 23 in the vibration system 2 share a single magnetic circuit system 3, simplifying the overall structure of the speaker, reducing its size and space requirements, and facilitating miniaturization. The speaker described in this invention is suitable for electronic devices requiring high privacy, such as mobile phones, AR or VR glasses, or tablet computers.

[0036] The basket frame 1 includes a first basket frame 11 and a second basket frame 12 disposed on a first surface a of the magnetic circuit system 3, and a third basket frame 13 disposed on a second surface b of the magnetic circuit system 3; the first basket frame 11 and the second basket frame 12 are coaxially arranged, and the first basket frame 11 is arranged around the outer periphery of the second basket frame 12; the first woofer 21 is supported on the side of the first basket frame 11 away from the magnetic circuit system 3, the tweeter 22 is supported on the side of the second basket frame 12 away from the magnetic circuit system 3, and the second woofer 23 is supported on the side of the third basket frame 13 away from the magnetic circuit system 3.

[0037] The first bass unit 21 includes a first bass voice coil 211 and a first bass diaphragm 212. The first bass diaphragm 212 is disposed on the side of the first bass voice coil 211 away from the magnetic circuit system 3 and is supported by the first frame 11. The tweeter 22 includes a tweeter voice coil 221 and a tweeter diaphragm 222. The tweeter diaphragm 222 is disposed on the side of the tweeter voice coil 221 away from the magnetic circuit system 3 and is supported by the second frame 12. The second bass unit 23 includes a second bass voice coil 231 and a second bass diaphragm 232 disposed on the second surface b of the magnetic circuit system 3. The second bass diaphragm 232 is disposed on the side of the second bass voice coil 231 away from the magnetic circuit system 3 and is supported by the third frame 13.

[0038] Referring to Figures 2 to 9, the first bass diaphragm 212 is annular. The first bass diaphragm 212 includes a first folded ring 2121, a central portion 2122, and a second folded ring 2123 connected sequentially from the inside out. The inner edge of the first folded ring 2121 is connected to the second frame 12, and its outer edge is connected to the first bass voice coil 211. The outer edge of the second folded ring 2123 is connected to the first frame 11. As shown in Figure 4, in some embodiments, the first folded ring 2121 and the second folded ring 2123 can be upwardly convex structures. In other embodiments, the first folded ring 2121 and the second folded ring 2123 can also be downwardly concave structures. 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.

[0039] Referring to Figures 2 to 5, a first structure of the loudspeaker provided by the present invention is shown. The side magnet 302 includes a first side magnet 3021 disposed on the outer periphery of the central magnet 301 and a second side magnet 3022 disposed on the first surface a of the central magnet 301. The first side magnet 3021 and the central magnet 301 are spaced apart, and both the first side magnet 3021 and the second side magnet 3022 are magnetized in the opposite direction to the central magnet 301. The magnetic circuit system 3 further includes a first magnetic cup 303, a second magnetic cup 304, a third magnetic cup 305, and a fourth magnetic cup 306. The first magnetic cup 303 is used to accommodate the central magnet 301. A magnet 301, a second magnetic bowl 304 disposed on the second surface b of the first side magnet 3021 and aligned with the first side magnet 3021, a third magnetic bowl 305 covering the first surface a of the central magnet 301, a second side magnet 3022 disposed on the first surface a of the third magnetic bowl 305, and a fourth magnetic bowl 306 covering the second side magnet 3022; a first basin stand 11 supported on the first surface a of the first side magnet 3021, a second basin stand 12 supported on the first surface a of the second side magnet 3022, and a third basin stand 13 supported on the second surface b of the second magnetic bowl 304.

[0040] The central magnet 301 has a ring structure, and the second side magnet 3022 also has a ring structure. The first magnetic cup 303, the second magnetic cup 304, the third magnetic cup 305, and the fourth magnetic cup 306 are all made of low-carbon steel soft magnetic material.

[0041] In one embodiment of the present invention, the first magnetic bowl 303 includes a first flat plate 3031, a first side plate 3032 disposed on the edge of the first flat plate 3031, and a second flat plate 3033 disposed on the side plate 3032 away from the first flat plate 3031. The central magnet 301 is disposed 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 magnet 3021, and the first side magnet 3021 is sandwiched between the second flat plate 3033 and the second magnetic bowl 304. The second magnetic bowl 304 and the first side magnet 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 second side plate 3032 disposed on the edge of the first flat plate 3031. The second side plate 3052 on the inner edge of the third plate 3051 extends away from the first surface a of the third plate 3051 to be flush with the fourth magnetic cup 306. The fourth magnetic cup 306 is aligned with the inner wall of the second side magnet 3022. The second side magnet 3022 and the second side plate 3052 are spaced apart to form a third magnetic gap 309. The first frame 11 is supported on the first surface a of the first side magnet 3021, and the first bass voice coil 211 is inserted into the first magnetic gap 307. The second frame 12 is supported on the first surface a of the second side magnet 3022, and the tweeter voice coil 221 is inserted into the third magnetic gap 309. The third frame 13 is supported on the second surface b of the second magnetic cup 304, and the second bass voice coil 231 is inserted into the second magnetic gap 308.

[0042] The outer wall of the first side magnet 3021 and the outer wall of the second magnetic bowl 304 are aligned / aligned, and the outer wall of the first basin holder 11 is aligned with the outer wall of the first side magnet 3021; ​​the outer wall of the third basin holder 13 is aligned with the outer wall of the second magnetic bowl 304.

[0043] Referring to Figures 6 to 9, a second structure of the loudspeaker provided by the present invention is shown. In another specific embodiment of the present invention, the structure of the magnetic circuit system 3 is adjusted. Specifically, the side magnet 302 includes a third side magnet 3023 disposed around the center magnet 301. The center magnet 301 and the third side magnet 3023 are magnetized in opposite directions, and the third side magnet 3023 and the center magnet 301 are spaced apart. The magnetic circuit system 3 also includes a fifth magnetic cup 310, a sixth magnetic cup 311, and a seventh magnetic cup 312. The fifth magnetic cup 310 is used to house the center magnet 301. The sixth magnetic cup 311 is disposed on the second surface b of the third side magnet 3023 and is aligned with the third side magnet 3023. The seventh magnetic cup 312 is disposed on the first surface a of the center magnet 301 and is aligned with the center magnet 301.

[0044] The fifth magnetic bowl 310 includes a fourth flat plate 3101, a fourth side plate 3102 disposed on the edge of the fourth flat plate 3101, a fifth flat plate 3103 disposed on one end of the fourth side plate 3102 away from the fourth flat plate 3101, and a fifth side plate 3104 disposed in the central region of the fourth flat plate 3101. 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. A central magnet 301 is disposed on the fourth flat plate 3101, and the central magnet 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 magnet 3023, and the third side magnet 3023 is sandwiched between the fourth flat plate 3101 and the seventh magnetic bowl 312. Between the fifth plate 3103 and the sixth magnetic cup 311; the third side magnet 3023 and the sixth magnetic cup 311 are both spaced apart from the fourth side plate 3102 to form a sixth magnetic gap 315; the center magnet 301 is spaced apart from the fifth side plate 3104 to form a fifth magnetic gap 314; the first frame 11 is supported on the first surface a of the third side magnet 3023, and the first bass voice coil 211 is inserted into the fourth magnetic gap 313; the second frame 12 is supported on the first surface a of the seventh magnetic cup 312, and the tweeter voice coil 221 is inserted into the fifth magnetic gap 314; the third frame 13 is supported on the second surface b of the sixth magnetic cup 311, and the second bass voice coil 231 is inserted into the sixth magnetic gap 315.

[0045] The outer wall of the third side magnet 3023 and the outer wall of the sixth magnetic bowl 311 are aligned / aligned, the outer wall of the first basin holder 11 is aligned with the outer wall of the third side magnet 3023, and the outer wall of the third basin holder 13 is aligned with the outer wall of the sixth magnetic bowl 311.

[0046] Further, referring to Figures 10 to 13, the loudspeaker of the present invention also includes a housing 4, which includes a first housing 41 and a second housing 42 that are interconnected. The magnetic circuit system 3, the vibration system 2, and the frame 1 are housed in the first housing 41. The first frame 11, the magnetic circuit system 3, and the second frame 12 divide the housing 4 into multiple sound-emitting cavities. The aperture of the first housing 41 is larger than the aperture of the second housing 42. The magnetic circuit system 3, the vibration system 2, and the frame 1 are assembled to form a sound-emitting unit 100. A first partition 43 is provided in the cavity region of the first housing 41 away from the second housing 42. The first partition 43 is correspondingly arranged with the second housing 42. The sound-emitting unit 100 is disposed in the cavity formed by the first partition 43 and the inner wall of the first housing 41. Within the area; a first front cavity 51 is formed between the first housing 41 and the first surface a of the sound-emitting unit 100, and a second front cavity 52 is formed between the first housing 41 and the second surface b of the sound-emitting unit 100; an end plate at one end of the first housing 41 extends to the first frame 11 and the second frame 12 respectively, and the second housing 42 communicates with the sound-emitting unit 100 to form a rear cavity 53, and the sound-emitting unit 100 and the first housing 41 form a closed high-frequency rear cavity 54; a first outlet 411 is provided at one end of the first housing 41, and the first front cavity 51 and the second front cavity 52 merge and communicate with the first outlet 411; the second housing 42 is provided with a second outlet 421 that communicates with the rear cavity 53. In this embodiment of the invention, the first sound-emitting cavity 51 and the second sound-emitting cavity 52 merge into the same first sound outlet 411, enabling double-sided sound emission and increasing the effective radiation area, thereby improving the frequency response. Furthermore, it can reduce the voice coil temperature and improve product reliability. The specific structure of the housing 4 can be selected according to actual needs. For example, referring to Figures 10 and 11, both the first housing 41 and the second housing 42 are rectangular prisms. The aperture of the first housing 41 is larger than that of the second housing 42. The sound-emitting unit 100 includes a long side and a short side. The long side wall of the sound-emitting unit 100 is connected to the inner wall of the side plate of the first housing 41, and one short side wall of the sound-emitting unit 100 is connected to the inner wall of the first housing 41 near the second housing 42. The first partition 43 is connected to the other short side of the sound-emitting unit 100.

[0047] In another specific embodiment, referring to Figures 12 and 13, compared to the aforementioned housing 4, the housing 4 further includes a second partition 44 and a third partition 45 disposed within the first housing 41 and connected to the first surface a and the second surface b of the first partition 43. The first housing 41, the first surface a of the sound-emitting unit 100, and the second partition 44 enclose a first sound-emitting front cavity 51, and the second housing 42, the second surface b of the sound-emitting unit 100, and the third partition 45 enclose a second sound-emitting front cavity 52. ​​Two first sound outlets 411 are located at the end of the first housing 41 away from the second housing 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 this embodiment of the invention, the first sound-emitting front cavity 51 and the second sound-emitting front cavity 52 are separated for sound emission. In this structure, the effect of privacy calls can be improved by setting the position of the sound outlets.

[0048] Furthermore, referring to Figure 14, a leakage hole 6 is provided in the area where the magnetic circuit system 3 connects to the first housing 41. The leakage hole 6 ensures air leakage, guarantees airflow and sound transmission, and further guarantees the quality of the speaker. Optionally, the number and location of the leakage holes 6 can be specifically set according to actual needs.

[0049] Optionally, in some embodiments, the central magnet 301 is generally rectangular. When the loudspeaker adopts the first structure, the first side magnet 3021 includes a first long side magnet corresponding to the long side of the central magnet 301 and a first short side magnet corresponding to the short side of the central magnet 301; the leakage hole 6 can be formed on the first long side magnet, and the position of the leakage hole 6 is not limited; the leakage hole 6 can also be formed on the first magnetic cup 303 and / or the second magnetic cup 304 connected to the first long side magnet. When the loudspeaker adopts the second structure, the third side magnet 3023 includes a second long side magnet corresponding to the long side of the central magnet 301 and a second short side magnet corresponding to the short side of the central magnet 301; the leakage hole 6 can be formed on the second long side magnet, and the leakage hole 6 can also be formed on the fifth magnetic cup 310 and / or the sixth magnetic cup 311 connected to the second long side magnet.

[0050] It should be noted that any speaker structure obtained by freely combining the vibration system 2, magnetic circuit system 3 and housing 4 disclosed in the above embodiments of the present invention falls within the protection scope of the present invention.

[0051] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A compound loudspeaker, characterized by, The device includes a basket frame, a vibration system fixed to the basket frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a first bass unit and a tweeter unit disposed on a first side of the magnetic circuit system, and a second bass unit disposed on a second side of the magnetic circuit system. The first bass unit and the tweeter unit are coaxially arranged, and the first bass unit is arranged around the outside of the tweeter unit. The magnetic circuit system includes a central magnet and a side magnet disposed on the outer periphery of the central magnet. The central magnet and the side magnet are magnetized in opposite directions.

2. The compound loudspeaker of claim 1, wherein: The basket frame includes a first basket frame and a second basket frame disposed on a first side of the magnetic circuit system, and a third basket frame disposed on a second side of the magnetic circuit system; the first basket frame and the second basket frame are coaxially arranged, and the first basket frame is arranged around the outer periphery of the second basket frame; the first woofer is supported on the side of the first basket frame away from the magnetic circuit system, the tweeter is supported on the side of the second basket frame away from the magnetic circuit system, and the second woofer is supported on the side of the third basket frame away from the magnetic circuit system.

3. The compound loudspeaker of claim 2, wherein: The first bass unit includes a first bass voice coil and a first bass diaphragm, the first bass diaphragm being disposed on the side of the first bass voice coil away from the magnetic circuit system and supported by the first frame; the tweeter includes a tweet voice coil and a tweet diaphragm, the tweet diaphragm being disposed on the side of the tweet voice coil away from the magnetic circuit system and supported by the second frame; the second bass unit includes a second bass voice coil and a second bass diaphragm disposed on the second surface of the magnetic circuit system, the second bass diaphragm being disposed on the side of the second bass voice coil away from the magnetic circuit system and supported by the third frame.

4. The compound loudspeaker of claim 3, wherein: The edge magnet includes a first edge magnet disposed around the periphery of the central magnet and a second edge magnet disposed on a first surface of the central magnet. The first edge magnet and the central magnet are spaced apart, and both the first edge magnet and the second edge magnet are magnetized in the opposite direction to the central magnet. The magnetic circuit system also includes a first magnetic cup, a second magnetic cup, a third magnetic cup, and a fourth magnetic cup. The first magnetic cup is used to house the central magnet. The second magnetic cup is disposed on a second surface of the first edge magnet and is aligned with the first edge magnet. The third magnetic cup covers the first surface of the central magnet. The second edge magnet is disposed on the first surface of the third magnetic cup. The fourth magnetic cup covers the second edge magnet.

5. The compound loudspeaker of claim 4, wherein: The first magnetic bowl includes a first flat plate, a first side plate disposed on the edge of the first flat plate, and a second flat plate disposed on the side plate away from the first flat plate. The central magnet is disposed 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 magnet, and the first side magnet is sandwiched between the second flat plate and the second magnetic bowl. The second magnetic bowl and the first side magnet are both spaced apart from the first side plate to form a second magnetic gap. The third magnetic bowl includes a ring-shaped third flat plate and a second side plate disposed on 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 magnet, and the second side magnet and the second side plate are spaced apart to form a third magnetic gap.

6. The compound loudspeaker of claim 5, wherein: The first frame is supported on the first surface of the first side magnet, and the first bass voice coil is inserted into the first magnetic gap; the second frame is supported on the first surface of the second side magnet, and the tweeter voice coil is inserted into the third magnetic gap; the third frame is supported on the second surface of the second magnetic cup, and the second bass voice coil is inserted into the second magnetic gap.

7. The composite loudspeaker of claim 3, wherein: The edge magnet includes a third edge magnet disposed around the periphery of the central magnet. The central magnet and the third edge magnet are magnetized in opposite directions and are spaced apart. The magnetic circuit system also includes a fifth magnetic cup, a sixth magnetic cup, and a seventh magnetic cup. The fifth magnetic cup is used to house the central magnet. The sixth magnetic cup is disposed on the second surface of the third edge magnet and is aligned with it. The seventh magnetic cup covers the first surface of the central magnet and is aligned with it. The fifth magnetic cup includes a fourth flat plate, a fourth side plate disposed on the edge of the fourth flat plate, a fifth flat plate disposed on the end of the fourth side plate away from the fourth flat plate, and a fifth side plate disposed in the central region 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 cup. The central magnet is disposed on the fourth flat plate. The central magnet and the fourth side plate are spaced apart to form a fourth magnetic gap, and the central magnet and the fifth side plate are spaced apart to form a fifth magnetic gap.

8. The compound loudspeaker of claim 7, wherein: The fifth plate extends to the first surface of the third side magnet, which is sandwiched between the fifth plate and the sixth magnetic cup; both the third side magnet and the sixth magnetic cup are spaced apart from the fourth side plate to form a sixth magnetic gap; the first frame is supported on the first surface of the third side magnet, and the first bass voice coil is inserted into the fourth magnetic gap; the second frame is supported on the first surface of the seventh magnetic cup, and the tweeter voice coil is inserted into the fifth magnetic gap; the third frame is supported on the second surface of the sixth magnetic cup, and the second bass voice coil is inserted into the sixth magnetic gap.

9. The composite loudspeaker of claim 2, wherein: The composite loudspeaker also includes a housing, which comprises a first housing and a second housing that are interconnected. The magnetic circuit system, the vibration system, and the frame are housed in the first housing, and the first frame, the magnetic circuit system, and the second frame divide the housing into multiple sound-emitting cavities.

10. The compound loudspeaker of claim 9, wherein: The aperture of the first housing is larger than that of the second housing. The magnetic circuit system, the vibration system, and the frame are assembled to form a sound-generating unit. A first partition is provided in the cavity of the first housing away from the second housing. The first partition is correspondingly arranged with the opening of the second housing. The sound-generating unit is located in the area enclosed by the first partition and the inner wall of the first housing. A first sound-generating front cavity is formed between the first housing and the first surface of the sound-generating unit. A second sound-generating front cavity is formed between the first housing and the second surface of the sound-generating unit. An end plate at one end of the first housing extends to the first frame and the second frame, respectively. The communication between the second housing and the sound-generating unit forms a sound-generating rear cavity. The sound-generating unit and the first housing enclose a closed high-frequency rear cavity. A first sound outlet is provided at one end of the first housing. The first sound outlet is connected to the first sound outlet after the first sound outlet and the second sound outlet merge. The second housing is provided with a second sound outlet that communicates with the sound-generating rear cavity.

11. The compound loudspeaker of claim 10, wherein: The housing further includes a second partition and a third partition disposed within the first housing and connected to the first and second surfaces of the first partition. The first housing, the first surface of the sound-emitting unit, and the second partition form a first sound-emitting front cavity. The second housing, the second surface of the sound-emitting unit, and the third partition form a second sound-emitting front cavity. The first housing has two first sound outlets at one end away from the second housing. The first sound-emitting front cavity and the second sound-emitting front cavity are respectively connected to one of the first sound outlets.

12. The compound loudspeaker of claim 9, wherein: A leakage hole is provided in the area where the magnetic circuit system connects to the first housing.

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