Speaker

1. A speaker, comprising a shell having a receiving space, and a speaker unit received in the receiving space, wherein the speaker unit comprises a frame, and a magnetic path assembly and a vibration assembly which are arranged in the frame; the speaker unit divides the receiving space into a front cavity close to the vibration assembly and a rear cavity close to the magnetic path assembly;

the magnetic path assembly comprises a magnetic bowl, and a main magnet and an auxiliary magnet which are arranged on the magnetic bowl; the auxiliary magnet surrounds an outer periphery of the main magnet; a magnetic gap is formed between the main magnet and the auxiliary magnet;

the vibration assembly comprises a diaphragm and a voice coil connected to the diaphragm; an outer edge of the diaphragm is connected to the frame; an inner edge of the diaphragm is connected with a support; one end of the support away from the diaphragm is supported onto the main magnet; one end of the voice coil away from the diaphragm extends into the magnetic gap;

wherein, a guide pipe is also arranged in the receiving space; one end of the guide pipe is fixed to the magnetic bowl, and the other end of the guide pipe extends into the rear cavity;

the guide pipe is provided with a first through hole in a penetrating manner; the magnetic bowl is provided with a second through hole in a penetrating manner; the main magnet is provided with a third through hole in a penetrating manner; the support is provided with a fourth through hole in a penetrating manner; and the first through hole, the second through hole, the third through hole, and the fourth through hole are communicated in sequence.

2. The speaker of claim 1 , wherein the magnetic path assembly further comprises a main pole core and an auxiliary pole core; the main pole core is attached to a surface of the main magnet; the auxiliary pole core is attached to a surface of the auxiliary magnet; the support is supported onto the main pole core; the main pole core is provided with a fifth through hole in a penetrating manner; and the first through hole, the second through hole, the third through hole, the fifth through hole and the fourth through hole are communicated in sequence.

3. The speaker of claim 2 , wherein several convex sheets are convexly arranged on an outer circumferential surface of the auxiliary pole core, and several grooves each matched with the several convex sheets are formed in the frame.

4. The speaker of claim 1 , wherein the guide pipe comprises a straight pipe section and a disk-shaped pipe section; one end of the straight pipe section is fixed on the magnetic bowl; and the other end of the straight pipe section is connected to the disk-shaped pipe section.

5. The speaker of claim 1 , wherein the diaphragm comprises a first annular membrane, a second annular membrane, and a horn ring; an outer edge of the first annular membrane is connected to the frame; an inner edge of the first annular membrane is connected to an outer edge of the horn ring; an inner edge of the horn ring is connected to an outer edge of the second annular membrane; and an inner edge of the second annular membrane is connected to the support.

6. The speaker of claim 5 , wherein a bottom of the horn ring is provided with a connector; and the voice coil is fixed at one end of the connector away from the horn ring.

7. The speaker of claim 6 , wherein several vent holes are formed in a side wall surface of the connector.

8. The speaker of claim 6 , wherein the frame comprises an outer barrel body and an inner barrel body coaxially arranged in the outer barrel body; the magnetic path assembly is received in the inner barrel body; and the vibration assembly is received in the outer barrel body.

9. The speaker of claim 8 , wherein a corrugated sheet is arranged between the connector and the inner barrel body.

10. The speaker of claim 8 , wherein several lugs are convexly arranged on an outer circumferential surface of the outer barrel body, and the lugs are provided with mounting holes.