Large-amplitude double-sided loudspeaker

Abstract

The utility model discloses a large-amplitude double-sided loudspeaker, which comprises a frame, a first central magnetic steel, two vibration assemblies and two central washers, wherein the first central magnetic steel, the two vibration assemblies and the two central washers are arranged on the frame; the two vibration assemblies are arranged in a staggered mode in the length direction. The central washer comprises a connecting part and a supporting plate which are connected, the connecting part is L-shaped, and two ends of the connecting part are respectively connected with the basin stand and the supporting plate; the top surface and the bottom surface of the first central magnetic steel are respectively connected with the two supporting plates, a first avoiding groove used for avoiding one vibration assembly is formed between the end part of the first central magnetic steel and the connecting part, and a second avoiding groove used for avoiding the other vibration assembly is formed between the connecting part and the basin stand. According to the loudspeaker, the upper and lower bent center washers are used for supporting the first center magnetic steel, the two vibration assemblies are designed in a staggered mode, the first avoiding groove and the second avoiding groove are made to avoid the movable voice coil respectively, the stacking space of the supporting plate in the thickness direction is equivalently reduced, and on the premise that the amplitude large enough is guaranteed, the vibration efficiency is improved. And the single body can be thinner.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic conversion, in particular to a large-amplitude double-sided loudspeaker. Background Art

[0002] Double-sided vibration single-body speakers have higher space utilization, and generally can be designed with better bass effects under the same volume, and the shell vibration is smaller, also known as back-to-back vibration-damping single-body speakers. Generally, double-sided speaker designs require large amplitudes to enhance the bass shock effect.

[0003] Traditional double-sided vibration single-body speakers generally require a support plate in the middle of the magnetic circuit assembly. When there is a support plate in the middle, due to structural limitations, stacking components in the thickness direction requires increasing the height of the middle support plate. Therefore, it is difficult to achieve a light and thin appearance while increasing the amplitude. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a large-amplitude double-sided loudspeaker with a light and thin appearance.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a large-amplitude double-sided loudspeaker, comprising:

[0006] basin stand;

[0007] Two vibration components, each of which includes a diaphragm and a voice coil, the two diaphragms are respectively connected to the top and bottom of the basin frame, the two voice coils are respectively connected to the inner side surfaces of the two diaphragms, and the two vibration components are staggered in the length direction;

[0008] Two center washers, each of which comprises a connected connection portion and a support plate, wherein the connection portion is L-shaped, and two ends of the connection portion are respectively connected to the basin frame and the support plate;

[0009] The first center magnet, the top surface and the bottom surface of the first center magnet are respectively connected to the two support plates, the two connecting parts are relatively arranged along the length direction of the first center magnet, the first center magnet is arranged on the inner side of the voice coil, a first avoidance groove for avoiding one of the voice coils is formed between the end of the first center magnet and the connecting part, and a second avoidance groove for avoiding the other voice coil is formed between the connecting part and the basin frame.

[0010] Furthermore, the connecting portion includes a first connecting arm and a second connecting arm connected to each other, two ends of the first connecting arm are respectively connected to the support plate and the second connecting arm, and the first connecting arm is perpendicular to the support plate.

[0011] Furthermore, a second central magnetic steel is provided on a side of the support plate away from the first central magnetic steel, and the polarity of the second central magnetic steel is opposite to that of the first central magnetic steel.

[0012] Furthermore, a third central magnetic steel is provided on a side of the second central magnetic steel away from the first central magnetic steel, and the polarity of the third central magnetic steel is opposite to that of the second central magnetic steel.

[0013] Furthermore, a space-avoiding window is provided on the diaphragm corresponding to the third central magnetic steel.

[0014] Furthermore, the diaphragm includes an inner folding ring portion, a spherical top and an outer folding ring portion which are sequentially connected from the inside to the outside, and the air-avoiding window is provided on the inner folding ring portion.

[0015] Furthermore, a reinforcement ring is provided on the inner folding ring portion, and the reinforcement ring is arranged around the air-avoiding window.

[0016] Furthermore, it also includes a side washer and a plurality of side magnetic steels, wherein the plurality of side magnetic steels are connected to the basin frame through the side washers, and the first central magnetic steel is arranged between at least two of the side magnetic steels.

[0017] Furthermore, it also includes a centering support plate, one end of which is connected to the basin frame, and the other end of which is connected to a side of the voice coil away from the diaphragm.

[0018] Furthermore, the outer peripheral edge of the diaphragm is bent inwardly to form a flange, and the inner side surface of the flange is connected to the outer side surface of the basin frame.

[0019] The beneficial effects of the utility model are as follows: the large-amplitude double-sided loudspeaker uses two upper and lower bent center washers to support the first center magnet, and the two vibration components use a staggered design, so that the first avoidance groove between the connecting part and the first center magnet and the second avoidance groove between the connecting part and the basin frame respectively avoid the active voice coil, which is equivalent to reducing the stacking space of the support plate in the thickness direction. Under the premise of ensuring a sufficiently large amplitude, the single unit can be made thinner, and the size of the two vibration components can be kept consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a large-amplitude double-sided speaker according to Embodiment 1 of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the large-amplitude double-sided loudspeaker in the length direction of the first embodiment of the utility model (rotated 90° counterclockwise);

[0022] Figure 3 for Figure 2 A magnified picture of the details of part A;

[0023] Figure 4 A cross-sectional view of the large-amplitude double-sided loudspeaker in the width direction of the first embodiment of the utility model;

[0024] Figure 5 This is an exploded view of the large-amplitude double-sided speaker of the first embodiment of the utility model.

[0025] Description of labels:

[0026] 1. Basin stand;

[0027] 2. Vibration assembly; 21. Diaphragm; 211. Inner folding ring; 2111. Air-proof window; 2112. Reinforcement ring; 212. Dome; 213. Outer folding ring; 2131. Flanging; 22. Voice coil;

[0028] 3. Center washer; 31. Connecting part; 311. First connecting arm; 312. Second connecting arm; 32. Support plate; 33. First avoidance groove; 34. Second avoidance groove;

[0029] 4. The first center magnet;

[0030] 5. Second center magnet;

[0031] 6. The third center magnet;

[0032] 7. Bianhuasi;

[0033] 8. Edge magnetic steel;

[0034] 9. Centering support piece. DETAILED DESCRIPTION

[0035] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0036] Please refer to Figures 1 to 5 , a large-amplitude double-sided loudspeaker, comprising:

[0037] Basin stand 1;

[0038] Two vibration components 2, each of the two vibration components 2 comprises a diaphragm 21 and a voice coil 22, the two diaphragms 21 are respectively connected to the top and the bottom of the basin frame 1, the two voice coils 22 are respectively connected to the inner side surfaces of the two diaphragms 21, and the two vibration components 2 are staggered in the length direction;

[0039] Two center washers 3, each of the two center washers 3 comprises a connected connection portion 31 and a support plate 32, the connection portion 31 is L-shaped, and two ends of the connection portion 31 are respectively connected to the basin frame 1 and the support plate 32;

[0040] The first center magnetic steel 4, the top surface and the bottom surface of the first center magnetic steel 4 are respectively connected to the two support plates 32, the two connecting parts 31 are relatively arranged along the length direction of the first center magnetic steel 4, the first center magnetic steel 4 is arranged on the inner side of the voice coil 22, and a first avoidance groove 33 for avoiding one of the voice coils 22 is formed between the end of the first center magnetic steel 4 and the connecting part 31, and a second avoidance groove 34 for avoiding the other voice coil 22 is formed between the connecting part 31 and the basin frame 1.

[0041] From the above description, it can be seen that the beneficial effect of the utility model is that the large-amplitude double-sided speaker uses two upper and lower bent center washers 3 to support the first center magnetic steel 4, and the two vibration components 2 use a staggered design, so that the first avoidance groove 33 between the connecting part 31 and the first center magnetic steel 4 and the second avoidance groove 34 between the connecting part 31 and the basin frame 1 respectively avoid the active voice coil 22, which is equivalent to reducing the stacking space of the support plate 32 in the thickness direction. Under the premise of ensuring a sufficiently large amplitude, the single body can be made thinner, and at the same time, the size of the two vibration components 2 can be kept consistent.

[0042] Furthermore, the connecting portion 31 includes a first connecting arm 311 and a second connecting arm 312 connected to each other, two ends of the first connecting arm 311 are respectively connected to the support plate 32 and the second connecting arm 312 , and the first connecting arm 311 is perpendicular to the support plate 32 .

[0043] Furthermore, a second central magnetic steel 5 is provided on a side of the support plate 32 away from the first central magnetic steel 4 , and the polarity of the second central magnetic steel 5 is opposite to that of the first central magnetic steel 4 .

[0044] It can be seen from the above description that providing the second central magnetic steel 5 can make the magnetic flux larger, thereby increasing the BL value, increasing the sensitivity and improving the transient response.

[0045] Furthermore, a third central magnetic steel 6 is provided on a side of the second central magnetic steel 5 away from the first central magnetic steel 4 , and the polarity of the third central magnetic steel 6 is opposite to that of the second central magnetic steel 5 .

[0046] It can be seen from the above description that providing the third central magnetic steel 6 can make the magnetic flux larger, thereby increasing the BL value, increasing the sensitivity and improving the transient response.

[0047] Furthermore, a space-avoiding window 2111 is provided on the diaphragm 21 corresponding to the third central magnetic steel 6 .

[0048] It can be seen from the above description that the provision of the air-avoiding window 2111 can prevent the diaphragm 21 from colliding with the third center magnet 6, which is beneficial to further reduce the thickness of the large-amplitude double-sided speaker.

[0049] Furthermore, the diaphragm 21 includes an inner folding ring portion 211 , a dome 212 and an outer folding ring portion 213 which are sequentially connected from the inside to the outside, and the air-avoiding window 2111 is provided on the inner folding ring portion 211 .

[0050] It can be seen from the above description that the diaphragm 21 using a double fold ring design can suppress rolling vibration.

[0051] Furthermore, a reinforcement ring 2112 is provided on the inner folding ring portion 211 , and the reinforcement ring 2112 is arranged around the air-avoiding window 2111 .

[0052] It can be seen from the above description that the provision of the reinforcement ring 2112 can increase the overall strength of the inner folding ring portion 211 and avoid deformation of the edge of the air-avoiding window 2111 .

[0053] Furthermore, it also includes a side washer 7 and a plurality of side magnetic steels 8 , wherein the plurality of side magnetic steels 8 are connected to the basin frame 1 through the side washers 7 , and the first central magnetic steel 4 is disposed between at least two of the side magnetic steels 8 .

[0054] It can be seen from the above description that providing the side magnets 8 can increase the magnetic flux, which is beneficial to improving the acoustic performance of the large-amplitude double-sided loudspeaker.

[0055] Furthermore, it also includes a centering support plate 9 , one end of which is connected to the basin frame 1 , and the other end of which is connected to a side of the voice coil 22 away from the diaphragm 21 .

[0056] From the above description, it can be seen that the centering support plate 9 can make the vibration balance of the vibration component 2 better, and the ability of the two vibration components 2 to resist swing polarization when working is better, so that the large-amplitude double-sided speaker can achieve good acoustic performance.

[0057] Furthermore, the outer peripheral edge of the diaphragm 21 is bent inward to form a flange 2131 , and the inner side surface of the flange 2131 is connected to the outer side surface of the basin frame 1 .

[0058] It can be seen from the above description that providing the flange 2131 can increase the connection area between the diaphragm 21 and the basin frame 1 and improve the connection strength.

[0059] Please refer to Figures 1 to 5 , Embodiment 1 of the present utility model is: a large-amplitude double-sided speaker, which can be widely used in portable electronic devices such as mobile phones, laptops, hearing aids, smart watches, etc.

[0060] The large-amplitude double-sided speaker comprises a basin frame 1, a first central magnetic steel 4, two vibration components 2 and two central washers 3;

[0061] like Figure 2 and Figure 4 As shown, the two vibration components 2 each include a diaphragm 21 and a voice coil 22. The two diaphragms 21 are respectively bonded to the top and bottom of the basin frame 1 using UV glue, and the two voice coils 22 are respectively connected to the inner side surfaces of the two diaphragms 21. The two vibration components 2 are of the same size and are staggered in the length direction.

[0062] like Figure 2 and Figure 3 As shown, the two center washers 3 have the same shape and size. The two center washers 3 include a connecting portion 31 and a supporting plate 32. The connecting portion 31 is L-shaped. The two ends of the connecting portion 31 are respectively connected to the basin frame 1 and the supporting plate 32.

[0063] like Figure 3 As shown, the top surface and the bottom surface of the first center magnetic steel 4 are respectively connected to two support plates 32, and the two connecting parts 31 are arranged relatively along the length direction of the first center magnetic steel 4. The first center magnetic steel 4 is arranged on the inner side of the voice coil 22. A first avoidance groove 33 for avoiding one voice coil 22 is formed between the end of the first center magnetic steel 4 and the connecting part 31, and a second avoidance groove 34 for avoiding another voice coil 22 is formed between the connecting part 31 and the basin frame 1.

[0064] When the two vibration components 2 move inward under the action of the voice coil 22, one end of the voice coil 22 in the length direction enters the first avoidance groove 33, and the other end of the voice coil 22 in the length direction enters the second avoidance groove 34 until the two voice coils 22 are close to each other. The first avoidance groove 33 and the second avoidance groove 34 can prevent the two center washers 3 from interfering with the movement of the voice coil 22, which is beneficial to increase the amplitude of the voice coil 22. At the same time, since the two vibration components 2 are only staggered in the length direction, the shapes and sizes of the two vibration components 2 can be kept consistent, which is beneficial to the consistent sound of both sides of the large-amplitude double-sided speaker and ensure the sound effect.

[0065] like Figure 3 As shown, specifically, the connecting portion 31 includes a first connecting arm 311 and a second connecting arm 312 connected to each other, and the two ends of the first connecting arm 311 are respectively connected to the support plate 32 and the second connecting arm 312, and the first connecting arm 311 is perpendicular to the support plate 32. The first connecting arm 311 is formed by bending and extending the end of the support plate 32 toward the direction close to the first center magnetic steel 4, and the second connecting arm 312 is formed by bending and extending one end of the first connecting arm 311 away from the support plate 32 toward the direction away from the first center magnetic steel 4.

[0066] like Figure 2As shown, a second central magnetic steel 5 is provided on a side of the support plate 32 away from the first central magnetic steel 4, and the polarity of the second central magnetic steel 5 is opposite to that of the first central magnetic steel 4. The two second central magnetic steels 5 are of the same shape and size. A third central magnetic steel 6 is provided on a side of the second central magnetic steel 5 away from the first central magnetic steel 4, and the polarity of the third central magnetic steel 6 is opposite to that of the second central magnetic steel 5. The two third central magnetic steels 6 are of the same shape and size. Providing the second central magnetic steel 5 and the third central magnetic steel 6 can make the magnetic flux larger, thereby increasing the BL value, increasing the sensitivity and improving the transient response.

[0067] like Figure 4 and Figure 5 As shown, the large-amplitude double-sided speaker further includes a side washer 7 and a plurality of side magnets 8, the plurality of side magnets 8 are connected to the basin frame 1 through the side washers 7, and the first center magnet 4 is arranged between at least two side magnets 8. Specifically, the number of the side magnets 8 is four, and two side magnets 8 are respectively arranged on both sides of the first center magnet 4 in the width direction. The number of the side washers 7 is two, and the two side washers 7 are symmetrically arranged, and the top surface and the bottom surface of the side magnet 8 are respectively connected to the two side washers 7.

[0068] like Figure 4 As shown, the diaphragm 21 includes an inner folding ring portion 211, a dome 212 and an outer folding ring portion 213 connected in sequence from the inside to the outside, and a space-avoiding window 2111 is provided on the inner folding ring portion 211 corresponding to the third central magnetic steel 6. The dome 212 is annular, and the outer folding ring portion 213 and the inner folding ring portion 211 are respectively bonded to the dome 212 using UV glue. The outer folding ring portion 213 is bent and convex toward the inside, and the inner folding ring portion 211 is bent and convex toward the outside. In other embodiments, it is also feasible that the outer folding ring portion 213 is bent and convex toward the outside, and the inner folding ring portion 211 is bent and convex toward the inside.

[0069] like Figure 4 As shown, a reinforcement ring 2112 is provided on the inner folding ring portion 211, and the reinforcement ring 2112 is arranged around the air-avoiding window 2111. It is easy to understand that the reinforcement ring 2112 can increase the overall strength of the inner folding ring portion 211 and prevent the edge of the air-avoiding window 2111 from being deformed.

[0070] like Figure 1 and Figure 4 As shown, the outer peripheral edge of the outer folding ring portion 213 of the diaphragm 21 is bent inward to form a flange 2131, and the inner side of the flange 2131 is connected to the outer side of the basin frame 1. The flange 2131 can increase the connection area between the diaphragm 21 and the basin frame 1 and improve the connection strength.

[0071] like Figure 5As shown, the large-amplitude double-sided speaker further includes a centering support plate 9, one end of which is connected to the basin frame 1, and the other end of which is connected to the side of the voice coil 22 away from the diaphragm 21. Specifically, the voice coil 22 is in a rectangular ring shape, and four centering support plates 9 are correspondingly arranged for each voice coil 22, and the four centering support plates 9 are respectively connected to the four corners of the side of the voice coil 22 away from the diaphragm 21. The centering support plates 9 can make the vibration balance of the vibration component 2 better, and the two vibration components 2 have better anti-sway polarization ability when working, so that the large-amplitude double-sided speaker can achieve good acoustic performance.

[0072] To sum up, the large-amplitude double-sided speaker provided by the utility model uses two upper and lower bent center washers to support the first center magnet, and the two vibration components use a staggered design, so that the first avoidance groove between the connecting part and the first center magnet and the second avoidance groove between the connecting part and the basin frame respectively avoid the active voice coil, which is equivalent to reducing the stacking space of the support plate in the thickness direction. Under the premise of ensuring a sufficiently large amplitude, the single unit can be made thinner, and the size of the two vibration components can be kept consistent.

[0073] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A large-amplitude double-sided loudspeaker, characterized in that: include: basin stand; Two vibration components, each of which includes a diaphragm and a voice coil, the two diaphragms are respectively connected to the top and bottom of the basin frame, the two voice coils are respectively connected to the inner side surfaces of the two diaphragms, and the two vibration components are staggered in the length direction; Two center washers, each of which comprises a connected connection portion and a support plate, wherein the connection portion is L-shaped, and two ends of the connection portion are respectively connected to the basin frame and the support plate; The first center magnet, the top surface and the bottom surface of the first center magnet are respectively connected to the two support plates, the two connecting parts are relatively arranged along the length direction of the first center magnet, the first center magnet is arranged on the inner side of the voice coil, a first avoidance groove for avoiding one of the voice coils is formed between the end of the first center magnet and the connecting part, and a second avoidance groove for avoiding the other voice coil is formed between the connecting part and the basin frame.

2. A large-amplitude double-sided loudspeaker according to claim 1, characterized in that: The connecting portion includes a first connecting arm and a second connecting arm that are connected to each other. Two ends of the first connecting arm are respectively connected to the support plate and the second connecting arm. The first connecting arm is perpendicular to the support plate.

3. The large-amplitude double-sided loudspeaker according to claim 1, characterized in that: A second central magnetic steel is disposed on a side of the support plate away from the first central magnetic steel, and the polarity of the second central magnetic steel is opposite to that of the first central magnetic steel.

4. A large-amplitude double-sided loudspeaker according to claim 3, characterized in that: A third central magnetic steel is provided on a side of the second central magnetic steel away from the first central magnetic steel, and the polarity of the third central magnetic steel is opposite to that of the second central magnetic steel.

5. A large-amplitude double-sided loudspeaker according to claim 4, characterized in that: A space-avoiding window is arranged on the diaphragm corresponding to the third central magnetic steel.

6. A large-amplitude double-sided loudspeaker according to claim 5, characterized in that: The diaphragm comprises an inner folding ring portion, a spherical top and an outer folding ring portion which are sequentially connected from the inside to the outside, and the air-avoiding window is arranged on the inner folding ring portion.

7. A large-amplitude double-sided loudspeaker according to claim 6, characterized in that: A reinforcement ring is provided on the inner folding ring portion, and the reinforcement ring is arranged around the air-avoiding window.

8. The large-amplitude double-sided loudspeaker according to claim 1, characterized in that: It also includes a side washer and a plurality of side magnetic steels, wherein the plurality of side magnetic steels are connected to the basin frame through the side washers, and the first central magnetic steel is arranged between at least two of the side magnetic steels.

9. The large-amplitude double-sided loudspeaker according to claim 1, characterized in that: It also includes a centering support plate, one end of which is connected to the basin frame, and the other end of which is connected to a side of the voice coil away from the diaphragm.

10. The large-amplitude double-sided loudspeaker according to claim 1, characterized in that: The outer peripheral edge of the diaphragm is bent inwardly to form a flange, and the inner side surface of the flange is connected to the outer side surface of the basin frame.

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