Speaker
A speaker includes: a frame, a vibration system including a diaphragm, a voice coil, and a flexible circuit board, and a magnetic circuit system, wherein the flexible circuit board includes an outer fixing portion, an inner fixing portion, and an elastic connecting arm, the inner fixing portion includes a first fixing portion electrically connected with the elastic connecting arm, a second fixing portion bent and extended from the first fixing portion in a direction away from the diaphragm, and a third fixing portion bent and extended from an end of the second fixing portion away from the first fixing portion in a direction of the voice coil, the third fixing portion is provided with a pad which is electrically connected with a bottom surface of the voice coil. Compared with the related art, the speaker disclosed by the present disclosure has better acoustic performance.
1. A speaker, comprising:
a frame,
a vibration system fixed to the frame, comprising a diaphragm fixed to the frame, a voice coil, and a flexible circuit board fixed to the frame and electrically connected with the voice coil, and
a magnetic circuit system for driving the vibration system to vibrate and emit sounds, fixed to the frame and comprising a magnetic gap, wherein
the flexible circuit board includes an outer fixing portion fixedly connected with the frame, an inner fixing portion spaced apart from the outer fixing portion, and an elastic connecting arm connecting the outer fixing portion and the inner fixing portion, the inner fixing portion includes a first fixing portion electrically connected with the elastic connecting arm, a second fixing portion bent and extended from the first fixing portion in a direction away from the diaphragm, and a third fixing portion bent and extended from an end of the second fixing portion away from the first fixing portion in a direction of the voice coil, the third fixing portion is provided with a pad which is electrically connected with a bottom surface of the voice coil.
2. The speaker described as claim 1 , wherein an amount of the flexible circuit boards is four, the four flexible circuit boards are respectively arranged at four corners of the frame, an amount of the pads is two, the two pads are respectively arranged on different flexible circuit boards.
3. The speaker described as claim 2 , wherein the magnetic circuit system includes a yoke, and a main magnet and a plurality of secondary magnets located on the yoke, the plurality of secondary magnets is located around the main magnet and forms the magnetic gap with the main magnet, a plurality of receiving spaces for receiving the flexible circuit boards is formed between adjacent secondary magnets.
4. The speaker described as claim 3 , wherein the magnetic circuit system further includes a main pole plate located on the main magnet and a secondary pole plate located on the plurality of secondary magnets, the secondary pole plate is provided with a plurality of avoiding spaces respectively corresponding to the plurality of receiving spaces, and a projection of each flexible circuit board along the vibration direction of the diaphragm is at least partially located in a corresponding one of the avoiding spaces.
5. The speaker described as claim 1 , wherein the first fixing portion, the second fixing portion and the third fixing portion are configured as an integrated structure.
6. The speaker described as claim 1 , wherein the second fixing portion is in contact with a side surface of the voice coil.
7. The speaker described as claim 1 , wherein a width of the third fixing portion is the same as that of the bottom surface of the voice coil.
8. The speaker described as claim 1 , wherein the frame includes a plurality of receiving grooves for accommodating the first fixing portions, and each first fixing portion is fixed in a corresponding one of the receiving grooves.