CN219514227U - Loudspeaker - Google Patents

Abstract

The utility model discloses a loudspeaker, which comprises a basin frame with an accommodating space, a vibration system arranged in the accommodating space, and a magnetic circuit system with a magnetic gap and used for driving the vibration system to vibrate and sound, wherein the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil inserted in the magnetic gap and used for driving the vibrating diaphragm to vibrate and sound, the loudspeaker is also provided with an elastic support piece for elastically fixing the magnetic circuit system on the basin frame, the elastic support piece comprises an inner fixing part fixed with the magnetic circuit system, an outer fixing part fixed with the basin frame and an elastic arm connected with the inner fixing part and the outer fixing part, the elastic support piece supports the magnetic circuit system to vibrate in the accommodating space, and the vibration direction of the vibration system is opposite to the vibration direction of the magnetic circuit system when the vibration system works. The loudspeaker of the utility model can reduce the noise during operation.

Description

Loudspeaker

[ field of technology ]

The present utility model relates to electroacoustic conversion, and more particularly, to a speaker for portable electronic devices.

[ background Art ]

The loudspeaker mainly comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system which is provided with a magnetic gap and is used for driving the vibration system to vibrate and sound.

The vibration system comprises a vibrating diaphragm assembly which is elastically fixed on the basin frame, the magnetic circuit system is fixedly connected with the basin frame, only the vibrating diaphragm assembly vibrates when the vibrating diaphragm assembly works, the vibrating diaphragm assembly vibrates and is conducted to the basin frame, the vibration of a whole machine (a mobile phone, a car body, a notebook computer and the like) provided with the loudspeaker is caused, the performance of a product is influenced, and noise is easily generated.

Therefore, it is necessary to provide a new type of speaker.

[ utility model ]

The utility model aims to provide a loudspeaker capable of reducing noise.

In order to achieve the above object, the present utility model provides a speaker, which includes a frame having an accommodating space, a vibration system disposed in the accommodating space, and a magnetic circuit system having a magnetic gap and used for driving the vibration system to vibrate and sound, wherein the vibration system includes a diaphragm fixed to the frame, and a voice coil inserted in the magnetic gap and driving the diaphragm to vibrate and sound, the speaker is further provided with an elastic support member elastically fixing the magnetic circuit system to the frame, the elastic support member includes an inner fixing portion fixed to the magnetic circuit system, an outer fixing portion fixed to the frame, and an elastic arm connecting the inner fixing portion and the outer fixing portion, the elastic support member supports the magnetic circuit system to vibrate in the accommodating space, and a vibration direction of the vibration system is opposite to a vibration direction of the magnetic circuit system when the vibration system works.

Preferably, the inner fixing part is a hollow annular structure.

Preferably, the magnetic circuit system comprises a magnetic yoke and magnetic steel arranged in the magnetic yoke, the magnetic yoke comprises a bottom wall fixed with the magnetic steel and a side wall extending from the bottom wall to the vibration system, and the magnetic steel and the side wall form the magnetic gap.

Preferably, the bottom wall of the magnetic yoke comprises a lower surface far away from the vibration system and an upper surface corresponding to the lower surface, the bottom wall is provided with a containing groove recessed from the lower surface to the upper surface, and the inner fixing part of the elastic support piece is arranged in the containing groove.

Preferably, the elastic arm of the elastic support member extends outward from the long axis end of the inner fixing portion.

Preferably, the elastic support member further comprises an extension portion extending from the long axis end of the inner fixing portion to the direction of the vibrating diaphragm, a first damping member is arranged between the inner fixing portion and the basin frame, and the extension portion is connected with the outer surface of the first damping member.

Preferably, the frame includes a first surface connected to the diaphragm and a second surface corresponding to the first surface, the frame includes a groove recessed from the second surface toward the first surface, and the first damping member is disposed in the groove.

Preferably, the loudspeaker is further provided with a cover plate located on one side, far away from the magnetic circuit, of the elastic support piece, a second damping piece is arranged between the cover plate and the bottom wall of the magnetic yoke, and a gasket is arranged between the elastic support piece and the cover plate.

Preferably, the bottom wall is provided with a first through hole, the cover plate is provided with a second through hole corresponding to the first through hole, and the second damping piece is arranged in the first through hole and the second through hole.

Preferably, the second damping member is fixed to the bottom of the magnetic steel.

Compared with the related art, the loudspeaker of the utility model elastically supports the magnetic circuit system and the basin frame through the elastic support piece, and the vibration direction of the vibration system is opposite to that of the magnetic circuit system when the vibration system works, so that the vibration amounts of the vibration system and the magnetic circuit system are mutually counteracted, and the vibration of the loudspeaker and the noise generated when the loudspeaker works are reduced.

[ description of the drawings ]

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

fig. 1 is a schematic perspective view of a speaker according to the present utility model.

Fig. 2 is an exploded view of the structure of the speaker of the present utility model.

Fig. 3 is a cross-sectional view taken along line A-A of fig. 1.

[ detailed description ] of the utility model

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a loudspeaker 100, which is shown in fig. 1 to 3, and comprises a basin frame 1 with an accommodating space 10, a vibration system 2 fixed on the basin frame 1 and a magnetic circuit system 3 provided with a magnetic gap 30 and used for driving the vibration system 2 to vibrate and sound, wherein the vibration system 2 and the magnetic circuit system 3 are arranged in the accommodating space 10.

The vibration system 2 comprises a vibrating diaphragm 21 fixed on the basin frame 1, a voice coil 22 inserted in the magnetic gap 30 and driving the vibrating diaphragm 21 to vibrate and sound, and a flexible circuit board 23 positioned on one side of the voice coil 22 away from the vibrating diaphragm 21, wherein one end of the flexible circuit board 23 is connected with the voice coil 22, and the other end of the flexible circuit board is connected with the basin frame 1. Specifically, the flexible circuit board 23 includes a first fixing portion 231 connected to the voice coil 22, a second fixing portion 232 connected to the frame 1, and a connecting portion 233 connecting the first fixing portion 231 and the second fixing portion 232. The flexible circuit board 23 has two and is located at the stub ends of the speaker 100, respectively.

In this embodiment, the diaphragm 21 further includes a dome 211 located in the middle and a folded ring portion 212 connected to the dome 211.

The magnetic circuit 3 comprises a magnetic yoke 31, a magnetic steel 32 arranged in the magnetic yoke 31 and a pole piece 33 attached to the magnetic steel 32, wherein the magnetic yoke 31 comprises a bottom wall 311 fixed with the magnetic steel 32 and a side wall 312 extending from the bottom wall 311 to the vibration system 2, and the magnetic steel 32 and the side wall 312 form the magnetic gap 30. The side wall 312 is located at the long axis end of the yoke 31.

The loudspeaker 100 is further provided with an elastic support 4 for elastically fixing the magnetic circuit 3 to the basin frame 1, the elastic support 4 comprises an inner fixing part 41 fixed to the magnetic circuit 3, an outer fixing part 42 fixed to the basin frame 1, and an elastic arm 43 connected with the inner fixing part and the outer fixing part, the elastic support 4 supports the magnetic circuit 3 to vibrate in the accommodating space 10, and the vibration direction of the vibration system 2 is opposite to that of the magnetic circuit 3 when the vibration system works, so that the vibration amounts of the vibration system 2 and the magnetic circuit 3 cancel each other, no additional excitation source is introduced to the whole machine (mobile phone, car body, notebook computer, etc.) provided with the loudspeaker 100, and the vibration and noise risks are low.

Specifically, the inner fixing portion 41 of the elastic support 4 has a hollow annular structure, and the outer fixing portion 42 is located at the long axis end of the elastic support 4, that is, the elastic arm 43 extends from the long axis end of the inner fixing portion 41 to the outside. The elastic support 4 has an extension 44 extending from the long axis end of the inner fixing portion 41 in the direction of the diaphragm 21, the extension 44 being located outside the side wall 312 of the yoke 31, and the extension 44 being disposed at a distance from the side wall 312. The bottom wall 311 of the yoke 31 includes a lower surface 3111 remote from the vibration system 2 and an upper surface 3112 corresponding to the lower surface 3111, the bottom wall 311 is provided with a receiving groove 3110 recessed from the lower surface 3111 toward the upper surface 3112, and the inner fixing portion 41 is disposed in the receiving groove 3110. The basin frame 1 comprises a first surface 11 connected with the vibrating diaphragm 21 and a second surface 12 corresponding to the first surface 11, the outer fixing part 42 is connected with the second surface 12, the basin frame 1 is further provided with a groove 13 recessed from the second surface 12 to the first surface 11, the groove 13 is provided with a first damping piece 5, the first damping piece 5 is clamped between the inner fixing part 41 and the groove 13, and the extension part 44 of the elastic support piece 4 is connected with the outer surface of the first damping piece 5. Preferably, the first damping member 5 is foam, rubber, or the like. The first damping piece can adjust the vibration damping of the magnetic circuit system 3, and better counteracts the vibration influence caused by the vibration system 1.

In this embodiment, the speaker 100 is further provided with a cover plate 6 located on a side of the elastic support member 4 away from the magnetic circuit 3, a second damping member 7 is disposed between the cover plate 6 and the bottom wall 311 of the yoke 31, and a spacer 8 is disposed between the inner fixing portion 41 and the cover plate 6. The spacer 8 provides a gap between the yoke bottom wall 311 and the cover plate 6, thereby providing a vibration space of the magnetic circuit system 3.

In addition, the bottom wall 311 is provided with a first through hole 310, the cover plate 6 is provided with a second through hole 60 corresponding to the first through hole 310, and the second damper 7 is placed in the first through hole 310 and the second through hole 60. The second damping member further adjusts the vibration damping of the magnetic circuit system 3.

Compared with the related art, the loudspeaker 100 elastically supports the magnetic circuit system 3 and the basin frame 1 through the elastic support 4, and the vibration direction of the vibration system 2 is opposite to that of the magnetic circuit system 3 when the vibration system works, so that the vibration amounts of the vibration system 2 and the magnetic circuit system 3 are mutually counteracted, and the vibration of the loudspeaker 100 and the noise generated when the loudspeaker works are reduced.

While the utility model has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the utility model.

Claims (10)

1. The utility model provides a speaker, its includes has the basin frame of accommodation space and arranges in vibration system in the accommodation space and have the magnetic gap and be used for the drive vibration system vibration sound production's magnetic circuit system, vibration system is including being fixed in the vibrating diaphragm of basin frame, insert and locate the magnetic gap and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, its characterized in that: the loudspeaker is also provided with an elastic support piece which is used for elastically fixing the magnetic circuit system to the basin frame, the elastic support piece comprises an inner fixing part which is fixed with the magnetic circuit system, an outer fixing part which is fixed with the basin frame and an elastic arm which is connected with the inner fixing part and the outer fixing part, the elastic support piece supports the magnetic circuit system to vibrate in the accommodating space, and the vibration direction of the vibration system is opposite to that of the magnetic circuit system when the vibration system works.

2. The loudspeaker of claim 1, wherein the internal fixation portion is a hollow annular structure.

3. The loudspeaker of claim 1, wherein the magnetic circuit includes a yoke and a magnetic steel disposed in the yoke, the yoke including a bottom wall fixed to the magnetic steel and a side wall extending from the bottom wall toward the vibration system, the magnetic steel and the side wall forming the magnetic gap.

4. A loudspeaker according to claim 3, wherein the bottom wall of the yoke comprises a lower surface remote from the vibration system and an upper surface corresponding to the lower surface, the bottom wall being provided with a receiving recess recessed from the lower surface to the upper surface, the internal fixing portion of the resilient support being disposed in the receiving recess.

5. The speaker of claim 1, wherein the elastic arm of the elastic support member extends outwardly from the long axis end of the inner fixing portion.

6. The loudspeaker of claim 1, wherein the elastic support member further comprises an extension portion extending from a long axis end of the inner fixing portion toward the direction of the diaphragm, a first damping member is disposed between the inner fixing portion and the tub, and the extension portion is connected to an outer surface of the first damping member.

7. The loudspeaker of claim 6, wherein the frame includes a first surface coupled to the diaphragm and a second surface corresponding to the first surface, the frame including a recess recessed from the second surface toward the first surface, the first damping member being disposed in the recess.

8. A loudspeaker according to claim 3, wherein the loudspeaker is further provided with a cover plate located on a side of the resilient support remote from the magnetic circuit, a second damping member being provided between the cover plate and the bottom wall of the yoke, and a spacer being provided between the resilient support and the cover plate.

9. The loudspeaker of claim 8, wherein the bottom wall is provided with a first through hole, the cover plate is provided with a second through hole corresponding to the first through hole, and the second damping member is disposed in the first through hole and the second through hole.

10. The loudspeaker of claim 9, wherein the second damping member is fixed to a bottom portion of the magnetic steel.