Loudspeaker device

1. A loudspeaker device, comprising:

a support connector configured to be in contact with a head; and

a speaker component, the speaker component including an earphone core and a core housing for accommodating the earphone core, the core housing being fixedly connected to the support connector, the core housing being provided with a key module; wherein

a ratio of a mass of the key module and a mass of the speaker component is not greater than 0.3.

2. The loudspeaker device of claim 1 , wherein

a contact position of the support connector with the head includes at least one contact point,

a distance between a center of the key module and the at least one contact point is not greater than a distance between a center of the core housing and the at least one contact point, and

the center of the key module or the center of the core housing is a center of mass or a centroid.

3. The loudspeaker device of claim 2 , wherein

there is a first distance between the center of the key module and the at least one contact point of the speaker component,

there is a second distance between the center of the core housing and the at least one contact point of the speaker component, and

a ratio between the first distance and the second distance is not greater than 0.95.

4. The loudspeaker device of claim 1 , wherein the core housing includes an outer side wall away from the head and a peripheral side wall operably connected to and surrounding the outer side wall.

5. The loudspeaker device of claim 4 , wherein:

the peripheral side wall includes a first peripheral side wall disposed along a length direction of the outer side wall and a second peripheral side wall disposed along a width direction of the outer side wall; and

the outer side wall and the peripheral side wall are operably connected together to form a cavity with an open end and accommodating the earphone core.

6. The loudspeaker device of claim 5 , wherein

the key module is located at a middle position of the outer side wall, or

the key module is located between the middle position and a top position of the outer side wall.

7. The loudspeaker device of claim 6 , wherein

the key module includes a key and an elastic bearing for supporting the key, and

the outer side wall is provided with a key hole matching the key.

8. The loudspeaker device of claim 3 , further comprising:

an auxiliary function module configured to receive an auxiliary signal and perform an auxiliary function; and

a flexible circuit board configured to electrically connect to an audio signal wire and an auxiliary signal wire of an external control circuit, the audio signal wire and the auxiliary signal wire being electrically and respectively connected to the earphone core and the auxiliary function module through the flexible circuit board, wherein

the core housing is further configured to accommodate the auxiliary function module and the flexible circuit board.

9. The loudspeaker device of claim 8 , wherein the flexible circuit board includes a plurality of first pads and a plurality of second pads, wherein

at least one first pad of the plurality of first pads is electrically connected to the audio signal wire, the at least one first pad being connected to at least one second pad of the plurality of second pads via a first flexible lead on the flexible circuit board, the at least one second pad being electrically connected to the earphone core via an external wire; and

at least one other first pad of the plurality of first pads is electrically connected to the auxiliary signal wire, the at least one other first pad being electrically connected to the auxiliary function module via a second flexible lead on the flexible circuit board.

10. The loudspeaker device of claim 9 , wherein:

the auxiliary function module is configured to realize one or more of an image function, a voice function, an auxiliary control function, and a switch control function.

11. The loudspeaker device of claim 10 , wherein:

the flexible circuit board includes a main circuit board and a first branch circuit board, the first branch circuit board being operably connected to the main circuit board and extending away from the main circuit board along one end of the main circuit board; and

the auxiliary function module includes a first auxiliary function module and a second auxiliary function module, the first auxiliary function module being disposed on the main circuit board, the second auxiliary function module being disposed on the first branch circuit board.

12. The loudspeaker device of claim 11 , wherein

the plurality of first pads are disposed on the main circuit board, and

the at least one second pad is disposed on the first branch circuit board.

13. The loudspeaker device of claim 11 , wherein:

the flexible circuit board further includes a second branch circuit board, the second branch circuit board being operably connected to the main circuit board and extending away from the main circuit board along the other end of the main circuit board, the second branch circuit board being spaced apart from the first branch circuit board; and

the auxiliary function module further includes a third auxiliary function module disposed on the second branch circuit board.

14. The loudspeaker device of claim 13 , wherein:

the plurality of first pads are disposed on the main circuit board,

the at least one second pad of the plurality of second pads is disposed on the first branch circuit board, and

the other second pads of the plurality of second pads are disposed on the second branch circuit board.

15. The loudspeaker device of claim 13 , wherein

the core housing further includes a bottom end wall operably connected to an end surface of the peripheral side wall, the first branch circuit board being disposed facing the bottom end wall, the second branch circuit board being disposed facing the peripheral side wall;

the second auxiliary function module includes a first microphone element; and

the third auxiliary function module includes a second microphone element; wherein

the first microphone element is disposed on a side of the first branch circuit board facing the bottom end wall, and

the second microphone element is disposed on a side of the second branch circuit board facing the peripheral side wall.

16. The loudspeaker device of claim 9 , wherein the earphone core includes:

a magnetic circuit component configured to provide a magnetic field; and

a vibration component, the vibration component including a coil and an inner lead, wherein

the coil is located in the magnetic field,

the inner lead is electrically connected to the coil,

the coil is capable of receiving an audio current through the inner lead, and converting the audio current into a mechanical vibration signal under an action of the magnetic field, and

one end of the external wire is electrically connected to the plurality of second pads, and the other end of the external wire is electrically connected to the inner lead to transmit the audio current to the coil.

17. The loudspeaker device of claim 16 , wherein the core housing includes a wiring groove, the external wire and/or the inner lead being disposed in the wiring groove.

18. The loudspeaker device of claim 16 , wherein the inner lead and the external wire are welded to each other, a welding position of the inner lead and the external wire being located in the wiring groove.

19. The loudspeaker device of claim 1 , wherein a connection portion connecting the support connector and the core housing includes a central axis, an extension line of the central axis having a projection on a plane where an outer side surface of the key module is located, an angle between the projection and a long axis direction of the key module being less than 10°.

20. The loudspeaker device of claim 7 , wherein there is an intersection between the long axis direction and a short axis direction of the outer side surface of the key module, there being a shortest distance between the projection and the intersection, the shortest distance being smaller than a size of the outer side surface of the key module in the short axis direction.