loudspeaker

Abstract

The utility model provides a kind of loudspeaker, including basin frame, vibration system and magnetic circuit system, vibration system includes diaphragm and the voice coil of driving diaphragm vibration, diaphragm includes ball top and the folding ring of connecting ball top and basin frame, folding ring includes the first fixed part fixed in ball top, the second fixed part fixed in basin frame and the connecting part of connecting first fixed part and second fixed part, in the vibration direction of vibration system, ball top covers connecting part, first fixed part is fixed in the outer circumferential side of ball top and the extension direction of first fixed part is parallel with vibration direction.The utility model provides a kind of loudspeaker by setting ball top is located above folding ring, increase radiation area, to improve the loudness of loudspeaker, first fixed part is fixed in the outer circumferential side of ball top, the extension direction of first fixed part is parallel with vibration direction, so that folding ring does not occupy the space of vibration direction, increase the opening height of folding ring and the vibration space of diaphragm.

Description

[Technical Field]

[0001] This utility model relates to the field of electroacoustic technology, and in particular to a loudspeaker. [Background Technology]

[0002] With the development of electronic technology, portable consumer electronic devices are becoming increasingly popular, such as mobile phones, handheld game consoles, navigation devices, or handheld multimedia entertainment devices. These electronic devices generally use voice for system feedback, such as incoming call notifications and navigation prompts on mobile phones, all of which utilize speakers.

[0003] The loudness of a loudspeaker is related to the size of its radiating surface. In related technologies, the radiating surface of a loudspeaker typically consists of a dome and a surround. The outer ring of the dome is a certain distance from the inner ring of the frame. The surround, projected in the direction of vibration, is a hollow ring used to connect the outer ring of the dome and the inner ring of the frame. The inner and outer edges of the surround fluctuate approximately on a horizontal plane. A portion of the loudspeaker's radiating area is borne by the dome, which vibrates and radiates approximately 100% of the area. However, the dome area only accounts for a few tens of percent of the total outer diameter area of ​​the loudspeaker. The other portion of the radiating area is borne by the surround, but its radiating area is less than half of its projected area; therefore, the surround's radiating area is not fully utilized.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. [Utility Model Content]

[0005] The purpose of this invention is to provide a loudspeaker that maximizes the radiation area and improves the sound volume.

[0006] The technical solution of this utility model is as follows: A loudspeaker includes a frame, a vibration system and a magnetic circuit system for driving the vibration system respectively fixed to the frame. The vibration system includes a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate. The diaphragm includes a dome and a folded ring connecting the dome and the frame. The folded ring includes a first fixing part fixed to the dome, a second fixing part fixed to the frame, and a connecting part connecting the first fixing part and the second fixing part. In the vibration direction of the vibration system, the dome covers the connecting part, and the first fixing part is fixed to the outer periphery of the dome and the extension direction of the first fixing part is parallel to the vibration direction.

[0007] Preferably, the distance between the first fixing part and the second fixing part in the vibration direction is greater than half of the maximum amplitude of the vibration system.

[0008] Preferably, in a direction perpendicular to the vibration direction, the first fixing part and the frame form an air gap, and the outer periphery of the dome is provided with an inwardly recessed notch, the width of the air gap at the notch is greater than the width of the air gap at other positions on the outer periphery of the dome.

[0009] Preferably, the notch is wavy or arc-shaped, and the maximum width of the notch in the direction perpendicular to the vibration direction is L1, where L1 is not less than 0.2 mm.

[0010] Preferably, the folding ring and the basin stand form an open cavity, and the basin stand is provided with a communication channel connecting the outside world and the open cavity.

[0011] Preferably, the first fixing part is glued to the dome, and the second fixing part is glued to the basin frame.

[0012] Preferably, the second fixing part is fixed to the inner circumference of the basin frame.

[0013] Preferably, the second fixing part is fixed to the middle of the inner circumference side of the basin frame and extends to the bottom of the inner circumference side of the basin frame, or the second fixing part is fixed to the bottom of the inner circumference side of the basin frame and extends to the middle of the inner circumference side of the basin frame.

[0014] Preferably, the magnetic circuit system includes a lower clamping plate, a main magnet and a secondary magnet fixed to the lower clamping plate, and a main pole core and a secondary pole core respectively fixed to the main magnet and the secondary magnet. The second fixing part is fixed between the frame and the secondary pole core. The secondary pole core includes a support part connected to the second fixing part and a relief part located below the connection part and recessed away from the connection part in the vibration direction. In the vibration direction, the surface of the relief part is closer to the secondary magnet than the surface of the support part.

[0015] Preferably, the magnetic circuit system further includes an auxiliary magnet fixed to the side of the main pole core away from the lower clamping plate, the dome is a hollow annular structure, and the diaphragm further includes an auxiliary folding ring connecting the auxiliary magnet and the dome.

[0016] The loudspeaker provided by this utility model features a diaphragm with a folded ring and a dome that are not on the same plane. The folded ring includes a first fixing part fixed to the dome, a second fixing part fixed to the frame, and a connecting part connecting the first and second fixing parts. In the vibration direction of the vibration system, the dome covers the connecting part, i.e., the folded ring is below the dome, which can increase the dome area and thus maximize the radiation area of ​​the loudspeaker, thereby improving the loudspeaker's sound volume. Furthermore, the first fixing part is fixed to the outer periphery of the dome, and the extension direction of the first fixing part is parallel to the vibration direction, so that the folded ring does not occupy the space in the vibration direction of the loudspeaker, increasing the opening height of the folded ring and the vibration space of the diaphragm, improving low-frequency driving efficiency, and thus improving the vibration stability of the loudspeaker. [Attached Image Description]

[0017] Figure 1 A three-dimensional structural schematic diagram of the first type of loudspeaker provided by this utility model;

[0018] Figure 2 For along Figure 1 A cross-sectional view of line AA (fixed by a folded ring, method 1);

[0019] Figure 3 For along Figure 1 Cross-sectional view of line AA (fixed by folded ring method 2);

[0020] Figure 4 For along Figure 1 Cross-sectional view of line AA (three-fold ring fixing method);

[0021] Figure 5 An exploded perspective view of the first type of loudspeaker provided by this utility model;

[0022] Figure 6 For along Figure 1 Sectional view of the middle BB line;

[0023] Figure 7 A three-dimensional structural diagram of the second type of loudspeaker provided by this utility model;

[0024] Figure 8 For along Figure 7 A cross-sectional view of the CC line;

[0025] Figure 9 A comparison diagram of the loudness of the speaker provided by this utility model and existing speakers;

[0026] Figure 10 A three-dimensional structural schematic diagram of the third type of loudspeaker provided by this utility model;

[0027] Figure 11 For along Figure 10 Sectional view of the DD line;

[0028] Loudspeaker 100 / 200 / 300, frame 11, air gap 12, open cavity 13, connecting channel 111, diaphragm 20, dome 21, notch 211, surround 22, first fixing part 221, second fixing part 222, connecting part 223, auxiliary surround 23, voice coil 30, main magnet 41, main pole core 42, auxiliary magnet 51, auxiliary pole core 52, support part 53, clearance part 54, lower clamping plate 60, auxiliary magnet 61.

Detailed Implementation Methods

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Example 1

[0031] Please see Figures 1 to 6 This utility model provides a loudspeaker 100, including a frame 11 and a vibration system and a magnetic circuit system that drive the vibration system, both fixed to the frame 11. The vibration system includes a diaphragm 20 fixed to the frame 11 and a voice coil 30 that drives the diaphragm 20 to vibrate. The diaphragm 20 includes a dome 21 fixed to the voice coil 30 and a folded ring 22 connecting the dome 21 and the frame 11. The magnetic circuit system includes a lower clamping plate 60, a main magnet 41 and a secondary magnet 51 fixed to the lower clamping plate 60, and a main pole core 42 and a secondary pole core 52 fixed to the main magnet 41 and the secondary magnet 51, respectively. The main magnet 41 and the secondary magnet 51 form a magnetic gap. The voice coil 30 is disposed in the magnetic gap. When energized, the voice coil 30 interacts with the magnetic field of the magnetic circuit system, causing the diaphragm 20 to reciprocate under force, thus driving the diaphragm 20 to vibrate and produce sound.

[0032] For further details, please refer to Figure 2 and Figure 5 The surround 22 includes a first fixing part 221 fixed to the dome 21, a second fixing part 222 fixed to the frame 11, and a connecting part 223 connecting the first fixing part 221 and the second fixing part 222. In the vibration direction of the vibration system, the dome 21 covers the connecting part 223. That is, by setting the surround 22 below the dome 21, the area of ​​the dome 21 can be increased, thereby maximizing the radiation area of ​​the speaker 100 and improving the loudness of the speaker 100. The first fixing part 221 of the surround 22 is fixed to the outer periphery of the dome 21 and the extension direction of the first fixing part 221 is parallel to the vibration direction, so that the surround 22 does not occupy the space in the vibration direction of the speaker 100, increasing the opening height of the surround 22 and the vibration space of the diaphragm 20, improving the low-frequency driving efficiency, and thus increasing the vibration stability of the speaker 100.

[0033] In this embodiment, the connecting portion 223 of the folding ring 22 is a C-shaped opening facing the basin frame 11, and its shape can also be S-shaped or W-shaped. The folding ring 22 opening with the above-described shape can ensure that the folding ring 22 has good elastic support capability.

[0034] As a preferred embodiment, the distance between the first fixing part 221 and the second fixing part 222 in the vibration direction is greater than half of the maximum amplitude of the vibration system. This design can limit the maximum amplitude of the vibration system, ensure that it vibrates within a safe range, and prevent the diaphragm 20 from colliding with the magnetic circuit system, which could cause distortion or even damage to the speaker 100.

[0035] Please see Figure 2 In this embodiment, the second fixing part 222 is fixed between the frame 11 and the sub-core 52. To prevent the surround 22 from colliding or rubbing against the magnetic circuit system during vibration, a support part 53 connected to the second fixing part 222 and a relief part 54 located below the connection part 223 and recessed away from the connection part 223 in the vibration direction are provided on the sub-core 52. In the vibration direction, the surface of the relief part 54 is closer to the sub-magnet 51 than the surface of the support part 53, that is, the surface of the support part is higher in the vibration direction. The combined design of the support part 53 and the relief part 54 can provide relief space for the connection part 223 of the surround 22, further increasing the vibration space of the diaphragm 20 and improving the vibration stability of the speaker 100.

[0036] Of course, in other embodiments, the second fixing part 222 of the folding ring 22 can also be fixed to the inner circumference of the frame 11, so that the fixing position of the folding ring 22 and the frame 11 can be flexibly adjusted according to the specific structure of the speaker, which is convenient for assembly.

[0037] Please see Figure 3 The second fixing part 222 is fixed to the inner circumferential side of the basin frame 11, and the second fixing part 222 extends from the bottom of the inner circumferential side of the basin frame 11 to the middle of the inner circumferential side of the basin frame 11, which can increase the opening height of the folding ring 22, increase the fixing area between the folding ring 22 and the basin frame 11, and does not occupy the space in the vibration direction.

[0038] Please see Figure 4 The second fixing part 222 is fixed to the inner circumference of the basin stand 11, and the second fixing part 222 extends from the middle of the inner circumference of the basin stand 11 to the bottom of the inner circumference of the basin stand 11. This arrangement allows the fixing position of the folding ring 22 to be adjusted according to the actual situation. It should be noted that the top, middle and bottom are based on the placement position in the attached drawings of the instruction manual. The middle part is the middle area between the top and the bottom, and does not mean exactly in the middle.

[0039] Please see Figure 5 and Figure 6In a direction perpendicular to the vibration direction, the first fixing part 221 and the frame 11 form an air gap 12 at intervals. An inwardly recessed notch 211 is provided on the outer periphery of the dome 21. The width of the air gap 12 at the notch 211 is greater than the width of the air gap 12 at other locations on the outer periphery of the dome 21. Several notches 211 can be provided, or they can be provided on at least one side of the dome 21. In this embodiment, four notches 211 are provided, respectively located on the four sides of the dome 21. Providing notches 211 increases the width of the air gap 12, thereby enabling adjustment of flow resistance to control damping and improving the acoustic characteristics of the speaker 200. Furthermore, the shape of the notch 211 can be wavy or arc-shaped; the curved edge provides a smoother transition, allowing air to pass through the notch more smoothly, which is beneficial for adjusting flow resistance to control damping. Furthermore, in the direction perpendicular to the vibration direction, the maximum width of the notch 211 is L1, and L1 is not less than 0.2mm, thereby ensuring the stability and efficiency of acoustic performance. If L1 is less than 0.2, it will lead to enhanced viscous friction and thermal conduction effects of air molecules in the boundary layer, reducing the sound pressure level efficiency of the loudspeaker and making it difficult to control the flow resistance.

[0040] Furthermore, in this embodiment, the first fixing part 221 is glued to the dome 21, and the second fixing part 222 is glued to the basin frame 11. In other embodiments, the folding ring 22 can also be fixed to the dome 21 and the basin frame 11 by welding.

[0041] For further details, please refer to Figure 9 This is a comparison diagram of the loudness of the speaker 100 provided by this utility model and the loudspeaker of the prior art. The solid line in the diagram represents the speaker provided by this utility model, and the dashed line represents the loudspeaker of the prior art. Due to the large radiation area of ​​the speaker 100 of this utility model, the loudspeaker 100 of this utility model has a higher loudness than the prior art under the same EQ voltage, with a maximum loudness increase of 2 dB.

[0042] Example 2

[0043] Please see Figure 7 and Figure 8 The surround 22 and the frame 11 form an open cavity 13. Unlike embodiment one, this embodiment has a connecting channel 111 on the frame 11 that connects the outside to the open cavity 13. Specifically, in this embodiment, the top surface of the frame 11 has a recessed groove that extends towards the magnetic circuit system. This groove serves as the connecting channel 111. Four grooves 111 are provided, each located on one of the four sides of the frame 11. The connecting channel 111 connects the outside to the open cavity 13, thereby ensuring airflow at the surround 22 and improving the acoustic characteristics of the speaker 200.

[0044] Example 3

[0045] Please see Figure 10and Figure 11 The difference between this embodiment and the first embodiment is that the magnetic circuit system also includes an auxiliary magnet 61 fixed to the side of the main pole core 42 away from the lower clamping plate 60, the dome 21 is a hollow ring structure, and the diaphragm 20 also includes an auxiliary folding ring 23 connecting the auxiliary magnet 61 and the dome 21.

[0046] In this embodiment, since the first fixing part 221 and the second fixing part 222 of the folding ring 22 are located on different planes, the support is more stable. Compared with the existing speakers, the speaker 300 of this invention has better anti-sway capability at the same piston mode frequency.

[0047] Compared with related technologies, the loudspeaker provided by this utility model has a diaphragm with a folded ring and a dome that are not on the same plane. The folded ring includes a first fixing part fixed to the dome, a second fixing part fixed to the frame, and a connecting part connecting the first fixing part and the second fixing part. In the vibration direction, the dome covers the connecting part, that is, the folded ring is below the dome, which can increase the dome area and thus maximize the radiation area of ​​the loudspeaker, thereby improving the loudspeaker's sound volume. Moreover, the first fixing part is fixed to the outer periphery of the dome, and the extension direction of the first fixing part is parallel to the vibration direction, so that the folded ring does not occupy the space in the vibration direction of the loudspeaker, increasing the opening height of the folded ring and the vibration space of the diaphragm, improving the low-frequency driving efficiency, and thus improving the vibration stability of the loudspeaker.

[0048] The above are merely embodiments of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A loudspeaker, comprising a frame, a vibration system respectively fixed to the frame, and a magnetic circuit system for driving the vibration system, the vibration system comprising a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate, the diaphragm comprising a dome and a surround connecting the dome and the frame, characterized in that, The folding ring includes a first fixing part fixed to the dome, a second fixing part fixed to the frame, and a connecting part connecting the first fixing part and the second fixing part. In the vibration direction of the vibration system, the dome covers the connecting part, the first fixing part is fixed to the outer periphery of the dome, and the extension direction of the first fixing part is parallel to the vibration direction.

2. The loudspeaker according to claim 1, characterized in that, The distance between the first fixing part and the second fixing part in the vibration direction is greater than half of the maximum amplitude of the vibration system.

3. The loudspeaker according to claim 1, characterized in that, In a direction perpendicular to the vibration direction, the first fixing part and the frame form an air gap, and the outer periphery of the dome is provided with an inwardly recessed notch. The width of the air gap at the notch is greater than the width of the air gap at other positions on the outer periphery of the dome.

4. The loudspeaker according to claim 3, characterized in that, The notch is wavy or arc-shaped, and in the direction perpendicular to the vibration direction, the maximum width of the notch is L1, where L1 is not less than 0.2 mm.

5. The loudspeaker according to claim 1, characterized in that, The folding ring and the basin stand form an open cavity, and the basin stand is provided with a communication channel connecting the outside world and the open cavity.

6. The loudspeaker according to claim 1, characterized in that, The first fixing part is glued to the dome, and the second fixing part is glued to the basin frame.

7. The loudspeaker according to claim 1, characterized in that, The second fixing part is fixed to the inner circumference of the basin frame.

8. The loudspeaker according to claim 7, characterized in that, The second fixing part is fixed to the middle of the inner circumference side of the basin stand and extends to the bottom of the inner circumference side of the basin stand, or the second fixing part is fixed to the bottom of the inner circumference side of the basin stand and extends to the middle of the inner circumference side of the basin stand.

9. The loudspeaker according to claim 1, characterized in that, The magnetic circuit system includes a lower clamping plate, a main magnet and a secondary magnet fixed to the lower clamping plate, and a main pole core and a secondary pole core respectively fixed to the main magnet and the secondary magnet. The second fixing part is fixed between the frame and the secondary pole core. The secondary pole core includes a support part connected to the second fixing part and a relief part located below the connection part and recessed away from the connection part in the vibration direction. In the vibration direction, the surface of the relief part is closer to the secondary magnet than the surface of the support part.

10. The loudspeaker according to claim 9, characterized in that, The magnetic circuit system also includes an auxiliary magnet fixed to the side of the main pole core away from the lower clamping plate, the dome is a hollow annular structure, and the diaphragm also includes an auxiliary folding ring connecting the auxiliary magnet and the dome.

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