An asymmetric double-sided sound emitting loudspeaker

Abstract

The application relates to the field of loudspeaker technology, in particular to an asymmetric double-sided sound production loudspeaker, wherein a first diaphragm and a second diaphragm are arranged on the two sides of a yoke respectively and are connected with a voice coil and a magnetic circuit assembly through a first centering web and a second centering web arranged on the yoke. The magnetic circuit assembly is arranged on the second centering web to form a magnetic circuit system which can move up and down, and a second diaphragm is additionally arranged on the flexible magnetic circuit. When the voice coil is electrified and driven by the magnetic field of the magnetic circuit assembly, the first diaphragm is vibrated, at the same time, the magnetic circuit assembly generates a reaction force with the voice coil, thereby reversely driving the magnetic circuit system and the second diaphragm in the magnetic circuit system to vibrate simultaneously. In the same working moment, the first diaphragm and the second diaphragm are reversely and synchronously vibrated, sound is superimposed, and greater sound pressure is generated. Compared with the existing loudspeaker, the product height and cost are extremely small, but the sound pressure can reach the effect of double-horn stacking.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of loudspeakers, in particular to an asymmetric double-sided sound emitting loudspeaker. BACKGROUND

[0002] With the development of electronic product industry such as tablet computers and notebook computers, users have higher and higher requirements for the sound experience of electronic products. However, the problem of low sound pressure and low power of loudspeakers cannot be effectively solved due to the structural limitations of electronic products.

[0003] In the prior art, a bidirectional sound emitting loudspeaker can obtain higher sound pressure and greater power. However, a simple stacking technology of double loudspeakers is often used, that is, an upper and lower mirror-symmetrical double-sided sound emitting technology. Although this technology can improve the sound pressure and power, it makes the thickness of the loudspeaker unit too high to meet the ultra-thin demand of the current market electronic products. Since two loudspeakers are stacked symmetrically, the height is doubled. It can also be regarded as simply changing a single horn into a double horn, resulting in a doubled cost. SUMMARY

[0004] The present application provides an asymmetric double-sided sound emitting loudspeaker, which can effectively solve the thickness and cost problems of bidirectional sound emitting loudspeakers in the background art.

[0005] In order to achieve the above purpose, the technical solution adopted by the present application is:

[0006] An asymmetric double-sided sound emitting loudspeaker, comprising: a basket, a first diaphragm, a second diaphragm, a voice coil and a magnetic circuit assembly, the first diaphragm and the second diaphragm are respectively arranged on both sides of the basket and are connected with the voice coil and the magnetic circuit assembly through a first centering piece and a second centering piece arranged on the basket;

[0007] The first centering piece comprises a first outer frame, a first suspension arm and an inner frame, the inner frame is connected with the first outer frame through a plurality of first suspension arms, the second centering piece comprises a second outer frame, a second suspension arm and an inner plate, the inner plate is connected with the second outer frame through a plurality of second suspension arms;

[0008] The magnetic circuit assembly comprises a main magnet and edge magnets located on both sides of the main magnet, the main magnet and the edge magnets are arranged on the inner plate and the second outer frame respectively, and the voice coil is arranged on the inner frame and located between the main magnet and the edge magnets.

[0009] Further, a connecting seat is arranged at four corners of one side of the basket, the second outer frame is fixedly connected with the connecting seat, and the first outer frame is fixedly connected with the side of the basket away from the connecting seat.

[0010] Further, long side grooves and short side grooves are arranged along the length and width directions of the basin frame between two adjacent connecting seats, the depth of the long side grooves is greater than that of the short side grooves;

[0011] Suspension supporting plates are symmetrically arranged in the two short side grooves, the suspension supporting plates are connected with the side of the voice coil away from the first centering supporting plate, and the side of the side magnet away from the second outer frame abuts against the groove bottom of the long side groove.

[0012] Further, the suspension supporting plate comprises a mounting portion, a connecting portion and a supporting portion, the mounting portion is connected with the supporting portion through the connecting portion;

[0013] The mounting portion is fixedly connected with the groove bottom of the short side groove, a limiting block is arranged on the groove bottom of the short side groove, the supporting portion is connected with part of the end surface of the voice coil, and the side of the mounting portion facing the supporting portion abuts against the limiting block.

[0014] Further, a limiting ring plate is arranged on the inner ring of the basin frame, the limiting ring plate is located in the same plane as the groove bottom of the long side groove and abuts against the side magnet.

[0015] Further, a limiting groove is arranged on the inner wall of the basin frame, and the outer ring of the limiting ring plate is embedded in the limiting groove.

[0016] Further, upper pole pieces and lower pole pieces are arranged on the two sides of the main magnet respectively, and the side magnet is connected with the second outer frame through a pad.

[0017] Further, a flexible circuit is arranged on the first centering supporting plate, and a solder pad is pre-embedded at two corners of the basin frame, and the flexible circuit is electrically connected with the voice coil and the solder pad respectively.

[0018] The loudspeaker has the following advantages:

[0019] In the application, the magnetic circuit assembly is arranged on the second centering supporting plate to form a magnetic circuit system that can move up and down, replacing the original fixed magnetic circuit system, and a second diaphragm is additionally arranged on the flexible magnetic circuit; when the voice coil is electrified, the first diaphragm is driven to vibrate by the magnetic field of the magnetic circuit assembly, at the same time, the magnetic circuit assembly generates a reaction force with the voice coil, thereby reversely driving the magnetic circuit system and the second diaphragm in the magnetic circuit system to vibrate, that is, in the same working moment, the first diaphragm and the second diaphragm are reversely and synchronously vibrated, the sound is superimposed, and a greater sound pressure is generated.

[0020] The magnetic circuit system in the loudspeaker adds a back diaphragm on the basis of the existing loudspeaker structure, and the product height and cost are extremely small compared with the existing loudspeaker, but the sound pressure can reach the effect of double-loudspeaker stacking. BRIEF DESCRIPTION OF DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an asymmetric double-sided loudspeaker in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the exploded structure of a double-sided loudspeaker in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the installation structure of the voice coil in the frame in an embodiment of the present invention;

[0025] Figure 4 This is an exploded structural diagram of the magnetic circuit assembly in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the basin frame structure in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the installation of the voice coil and the frame in an embodiment of the present invention;

[0028] Figure 7 for Figure 6 Enlarged view of the local structure at point C;

[0029] Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0030] Figure 9 for Figure 8 Enlarged view of the local structure at point D;

[0031] Figure 10 for Figure 1 Schematic diagram of the cross-sectional structure at point BB;

[0032] Figure 11 for Figure 10 Enlarged view of the local structure at point E in the middle.

[0033] Label: 1, pot rack; 11, connecting seat; 12, long side groove; 13, short side groove; 131, limiting block; 14, limiting ring plate; 15, limiting groove; 16, solder pad; 2, first diaphragm; 3, second diaphragm; 4, voice coil; 5, magnetic circuit assembly; 51, main magnet; 52, side magnet; 53, upper pole piece; 54, lower pole piece; 55, pad; 6, first centering branch; 61, first outer frame; 62, first cantilever; 63, inner frame; 7, second centering branch; 71, second outer frame; 72, second cantilever; 73, inner plate; 8, suspension branch; 81, mounting portion; 82, connecting portion; 83, support portion. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0035] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] As Figures 1 to 11 shown in a kind of asymmetric double-sided sound production loudspeaker, including pot rack 1, first diaphragm 2, second diaphragm 3, voice coil 4 and magnetic circuit assembly 5, first diaphragm 2 and second diaphragm 3 are respectively arranged in the two sides of pot rack 1, and are respectively connected with voice coil 4 and magnetic circuit assembly 5 by first centering branch 6 and second centering branch 7 arranged on pot rack 1;Wherein, first centering branch 6 includes first outer frame 61, first cantilever 62 and inner frame 63, inner frame 63 is connected with first outer frame 61 by multiple first cantilevers 62, second centering branch 7 includes second outer frame 71, second cantilever 72 and inner plate 73, and inner plate 73 is connected with second outer frame 71 by multiple second cantilevers 72.

[0038] In this invention, the magnetic circuit assembly 5 is set on the second centering support 7 to form a magnetic circuit system that can move up and down, replacing the original fixed magnetic circuit system, and a second diaphragm 3 is added to the flexible magnetic circuit. When the voice coil 4 is energized, it is driven by the magnetic field of the magnetic circuit assembly 5 to drive the first diaphragm 2 to vibrate. At the same time, the magnetic circuit assembly 5 will generate a reaction force with the voice coil 4, thereby driving the magnetic circuit system in the opposite direction and driving the second diaphragm 3 inside it to vibrate at the same time. That is, at the same working instant, the first diaphragm 2 and the second diaphragm 3 achieve anti-phase synchronous vibration, so that the sound is superimposed and thus a higher sound pressure level is generated.

[0039] The magnetic circuit assembly 5 includes a main magnet 51 and side magnets 52 located on both sides of it. The main magnet 51 and the side magnets 52 are respectively disposed on the inner plate 73 and the second outer frame 71. The voice coil 4 is disposed on the inner frame 63 and located between the main magnet 51 and the side magnets 52. The magnetic circuit system in the loudspeaker of this invention adds a rear diaphragm to the existing loudspeaker structure. Compared with existing loudspeakers, the increase in product height and cost is minimal, but its sound pressure level can achieve the effect of dual-speaker stacking.

[0040] See further Figure 1 and Figure 2 As shown, connecting seats 11 are provided at the four corners of one side of the basin frame 1. The second outer frame 71 is fixedly connected to the connecting seats 11, and the first outer frame 61 is fixedly connected to the side of the basin frame 1 away from the connecting seats 11. The first diaphragm 2 and the second diaphragm 3 are connected to the basin frame 1 through the first centering support plate 6 and the second centering support plate 7 provided on both sides of the basin frame 1, respectively.

[0041] Specifically, such as Figure 3 and Figure 4 As shown, the outer rings of the first diaphragm 2 and the second diaphragm 3 are fixedly connected to the frame 1 via the first outer frame 61 and the second outer frame 71, respectively; the voice coil 4 is located on the outer ring of the main magnet 51, and the voice coil 4 and the main magnet 51 are fixedly connected to the dome of the first diaphragm 2 and the second diaphragm 3 via the inner frame 63 and the inner plate 73, respectively. This allows a single loudspeaker to achieve the effect of a dual-loudspeaker combination at almost the same cost, and the application and cost to the customer's structure are basically the same as those of a single loudspeaker.

[0042] As a preferred embodiment of the basin stand 1 structure of this application, such as Figure 5 As shown, a long side groove 12 and a short side groove 13 are respectively provided between two adjacent connecting seats 11 along the length and width directions of the frame 1. The depth of the long side groove 12 is greater than the depth of the short side groove 13. A suspension support 8 is symmetrically arranged in the two short side grooves 13. The suspension support 8 is connected to the side of the voice coil 4 away from the first centering support 6. The side magnet 52 away from the second outer frame 71 abuts against the bottom of the long side groove 12.

[0043] The magnetic circuit assembly 5 is arranged on the side of the second centering support 7 facing the yoke 1, the main magnet 51 and the side magnet 52 are arranged along the length direction of the yoke 1, and the long side slot 12 arranged on both sides of the length direction of the yoke 1 provides a mounting space for the side magnet 52; the suspension support 8 is symmetrically arranged in the short side slot 13 on both sides to connect and support the voice coil 4, and the suspension support 8 cooperates with the first centering support 6 to completely support the weight of the voice coil 4, thereby avoiding the voice coil 4 being suspended and fixed by the first diaphragm 2, and ensuring that the voice coil 4 drives the first diaphragm 2 to achieve the maximum acoustic performance.

[0044] The depth of the long side slot 12 is greater than the depth of the short side slot 13, so that the suspension support 8 mounted on the bottom of the short side slot 13 corresponds to the middle position of the height of the magnetic circuit assembly 5, and the voice coil 4 is ensured to be located in the magnetic field of the magnetic circuit assembly 5 after installation.

[0045] As shown in Figure 3 , the suspension support 8 includes a mounting portion 81, a connecting portion 82 and a supporting portion 83, and the mounting portion 81 is connected to the supporting portion 83 through the connecting portion 82. The first centering support 6 and the suspension support 8 are fixedly connected to the yoke 1 through the first outer frame 61 and the mounting portion 81 respectively, and are fixedly connected to both sides of the voice coil 4 through the inner frame 63 and the supporting portion 83 respectively, thereby achieving suspension and support of the voice coil 4, increasing the setting mass of the voice coil 4, avoiding the first diaphragm 2 bearing the suspension mass of the voice coil 4, reducing the thickness of the first diaphragm 2, achieving the purpose of reducing the minimum resonance frequency and increasing the low-frequency amplitude, and improving the bass effect.

[0046] As shown in Figure 6 and Figure 7 , the mounting portion 81 is fixedly connected to the bottom of the short side slot 13, a limiting block 131 is arranged on the bottom of the short side slot 13, the supporting portion 83 is connected to part of the end surface of the voice coil 4, and the side of the mounting portion 81 facing the supporting portion 83 abuts against the limiting block 131. This makes the connection between the suspension support 8 and the yoke 1 more stable.

[0047] In this embodiment, a limiting ring plate 14 is arranged on the inner ring of the yoke 1, the limiting ring plate 14 is located in the same plane as the bottom of the long side slot 12, and abuts against the side magnet 52. Specifically, a limiting slot 15 is arranged on the inner wall of the yoke 1, and the outer ring of the limiting ring plate 14 is embedded in the limiting slot 15.

[0048] The limiting ring plate 14 embedded in the limiting slot 15 of the inner ring of the yoke 1 is fixedly connected to both sides of the side slot body in cooperation with the second outer frame 71 of the second centering support 7, thereby stably mounting all components in the magnetic circuit system except the main magnet 51 and the inner plate 73 for fixing the main magnet 51 on the yoke 1, and enabling the main magnet 51 to continuously and stably move under the action of the voice coil 4 and the magnetic field.

[0049] In this embodiment, as shown in Figure 4As shown, the upper pole piece 53 and the lower pole piece 54 are arranged on both sides of the main magnet 51 respectively, and the side magnet 52 is connected with the second outer frame 71 through the cushion block 55. Figure 2 As shown, the flexible circuit is arranged on the first centering piece 6, and the solder pad 16 is embedded at the two corners of the yoke 1, and the flexible circuit is electrically connected with the voice coil 4 and the solder pad 16 respectively.

[0050] Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An asymmetrical double-sided loudspeaker, characterized in that, include: The basket frame (1), the first diaphragm (2), the second diaphragm (3), the voice coil (4), and the magnetic circuit assembly (5) are respectively disposed on both sides of the basket frame (1) and are respectively connected to the voice coil (4) and the magnetic circuit assembly (5) through the first centering support (6) and the second centering support (7) disposed on the basket frame (1); The first centering support (6) includes a first outer frame (61), a first cantilever (62) and an inner frame (63). The inner frame (63) is connected to the first outer frame (61) through multiple first cantilever (62). The second centering support (7) includes a second outer frame (71), a second cantilever (72) and an inner plate (73). The inner plate (73) is connected to the second outer frame (71) through multiple second cantilever (72). The magnetic circuit assembly (5) includes a main magnet (51) and side magnets (52) located on both sides thereon. The main magnet (51) and the side magnets (52) are respectively disposed on the inner plate (73) and the second outer frame (71). The voice coil (4) is disposed on the inner frame (63) and located between the main magnet (51) and the side magnets (52). Connecting seats (11) are provided at the four corners on one side of the basin stand (1). The second outer frame (71) is fixedly connected to the connecting seats (11), and the first outer frame (61) is fixedly connected to the side of the basin stand (1) away from the connecting seats (11). A long side groove (12) and a short side groove (13) are respectively provided between two adjacent connecting seats (11) along the length and width directions of the basin frame (1), and the depth of the long side groove (12) is greater than the depth of the short side groove (13); A suspension support plate (8) is symmetrically arranged in the two short side slots (13). The suspension support plate (8) is connected to the side of the voice coil (4) away from the first centering support plate (6). The side magnet (52) away from the second outer frame (71) abuts against the bottom of the long side slot (12). The suspension support (8) includes a mounting part (81), a connecting part (82) and a supporting part (83), wherein the mounting part (81) is connected to the supporting part (83) through the connecting part (82); The mounting part (81) is fixedly connected to the bottom of the short side groove (13), and a limiting block (131) is provided at the bottom of the short side groove (13). The support part (83) is connected to a portion of the end face of the voice coil (4), and the side of the mounting part (81) facing the support part (83) abuts against the limiting block (131). Upper pole piece (53) and lower pole piece (54) are respectively provided on both sides of the main magnet (51), and the side magnet (52) is connected to the second outer frame (71) through a pad (55).

2. The asymmetric double-sided loudspeaker according to claim 1, characterized in that, A limiting ring plate (14) is provided on the inner ring of the basin frame (1). The limiting ring plate (14) is located on the same plane as the bottom of the long side groove (12) and abuts against the side magnet (52).

3. The asymmetric double-sided loudspeaker according to claim 2, characterized in that, A limiting groove (15) is provided on the inner wall of the basin frame (1), and the outer ring of the limiting ring plate (14) is embedded in the limiting groove (15).

4. The asymmetric double-sided loudspeaker according to claim 1, characterized in that, A flexible circuit is provided on the first centering support (6), and solder pads (16) are pre-embedded at the two corners of the frame (1). The flexible circuit is electrically connected to the voice coil (4) and the solder pads (16) respectively.

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