Receiver module

A receiver module, comprising:

• a receiver;
• and
• a microphone,
• wherein the receiver comprises:
• a holder having an receiving space;
• a vibration unit fixedly held by the holder;
• a magnetic circuit unit fixedly held by the holder;
• a front cover covering the holder;
• and
• a cover plate stacked on a side of the front cover facing away from the holder,
• wherein the vibration unit comprises a diaphragm interposed between the holder and the front cover, and the cover plate is spaced apart from the diaphragm to form a front cavity,
• the holder comprises a holder body portion enclosing the receiving space, a holder extension portion extending from the holder body portion in a direction facing away from the receiving space, and a first through-hole provided in the holder extension portion,
• the front cover comprises a front cover body portion covering the holder body portion, a front cover extension portion extending from the front cover body portion and covering the holder extension portion, and a second through-hole provided in the front cover extension portion,
• the holder extension portion comprises an upper surface facing the front cover, a lower surface arranged opposite to the upper surface, and a groove formed by recessing from the upper surface towards the lower surface, the first through-hole penetrates through a groove bottom of the groove, two ends of the groove communicate with the first through-hole and the second through-hole, respectively, and the groove bottom is parallel to both the upper surface and the lower surface,
• the microphone is mounted on the lower surface,
• the front cavity, the second through-hole, the first through-hole and a sound inlet hole of the microphone communicate with one another, and air in the front cavity is guided out to a back side of the receiver facing away from the front cavity via the second through-hole and the first through-hole and is absorbed by the microphone to eliminate noise.