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CN-224218507-U - Sound producing unit

CN224218507UCN 224218507 UCN224218507 UCN 224218507UCN-224218507-U

Abstract

The utility model discloses a sounding unit which comprises a yoke, a voice coil, a first side magnetic structure, a centering support piece and two groups of center magnetic structures, wherein a fixing table is convexly arranged on the yoke, a conductive piece is arranged in the fixing table in a penetrating manner, the conductive piece is provided with a conducting part exposed out of the sounding unit, the center magnetic structures are arranged on the yoke, the two groups of center magnetic structures are oppositely arranged, a gap is reserved between the two groups of center magnetic structures, the fixing table is positioned in the gap, concave parts are arranged on two opposite sides of the voice coil, the concave parts are positioned in the gap, the fixing table is positioned between the two concave parts, the first side magnetic structure is arranged on the yoke, the first side magnetic structure is provided with an extending part extending into a concave area of the concave parts, the centering support piece comprises an inner fixing part, a cantilever part, a lifting part and an outer fixing part, which are sequentially connected, and the inner fixing part is fixed on the fixing table and is electrically conducted with the conductive piece, and the outer fixing part is fixed on a vibrating diaphragm assembly and is electrically conducted with the voice coil. The sound generating unit has good acoustic performance.

Inventors

  • LIN JIAPING
  • DONG QINGBIN

Assignees

  • 深圳市维仕声学有限公司

Dates

Publication Date
20260508
Application Date
20250523

Claims (10)

  1. 1. The sound generating unit is characterized by comprising The yoke is convexly provided with a fixed table, a conductive piece is arranged in the fixed table in a penetrating way, and the conductive piece is provided with a conducting part exposed out of the sounding unit; The two groups of central magnetic structures are arranged on the yoke iron, the two groups of central magnetic structures are oppositely arranged, a gap is reserved between the two groups of central magnetic structures, and the fixed table is positioned in the gap; the voice coil is provided with inner concave parts at two opposite sides, the inner concave parts are positioned in the gaps, and the fixed table is positioned between the two inner concave parts; A first side magnetic structure provided on the yoke, the first side magnetic structure having an extension portion that protrudes into a recessed area of the concave portion; A diaphragm assembly; The centering support piece comprises an inner fixing portion, a cantilever portion, a lifting portion and an outer fixing portion which are sequentially connected, wherein the inner fixing portion is fixed on the fixing table and is electrically conducted with the conductive piece, and the outer fixing portion is fixed on the vibrating diaphragm assembly and is electrically conducted with the voice coil.
  2. 2. The sound generating unit according to claim 1, wherein the cantilever portions are connected to both sides of the inner fixing portion, respectively.
  3. 3. The sound generating unit according to claim 2, wherein the centering support is of a central symmetrical structure.
  4. 4. The sound generating unit according to claim 1, wherein the yoke is provided with a window, and the fixing table is embedded in the window.
  5. 5. The sound generating unit according to claim 1, wherein the voice coil has a plane symmetrical structure.
  6. 6. The sound generating unit according to claim 1, wherein the inner fixing portion of the centering support is provided with an inner bonding pad, the inner bonding pad is electrically connected with the conductive member, the outer fixing portion is provided with an outer bonding pad electrically connected with the inner bonding pad, and the outer bonding pad is electrically connected with the voice coil.
  7. 7. The sound generating unit according to claim 1, further comprising an FPC board, wherein the centering support and the conductive member are part areas of the FPC board, and the fixing table is provided with a through hole for the part areas of the FPC board to pass through.
  8. 8. The sound generating unit according to claim 1, wherein the concave portion is located on a long side or a short side of the voice coil.
  9. 9. The sound generating unit according to claim 1, further comprising a second side magnetic structure located outside a side of the voice coil where the concave portion is not provided.
  10. 10. The sound generating unit according to claim 1, further comprising a flange located outside a side of the voice coil where the concave portion is not provided, the flange being formed by bending a partial region of the yoke.

Description

Sound producing unit Technical Field The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit. Background With the development of science and technology, portable electronic products such as mobile phones, palm game machines, navigation devices, palm multimedia entertainment devices and the like play an indispensable role in daily life of people, in these portable electronic products, a sound generating unit is an indispensable component in the portable electronic products, and the quality of the sound generating unit directly influences the user experience when the user uses these portable electronic products. In the related art, the space for setting the sounding unit inside the portable electronic product is smaller and smaller, so that the size of the magnetic circuit system in the sounding unit is limited and cannot be increased, the BL value of the sounding unit is difficult to be improved, and the acoustic performance of the sounding unit is poor. Disclosure of utility model The utility model solves the technical problem of providing the sound generating unit with good acoustic performance. In order to solve the technical problems, the utility model adopts the technical scheme that the sounding unit comprises: The yoke is convexly provided with a fixed table, a conductive piece is arranged in the fixed table in a penetrating way, and the conductive piece is provided with a conducting part exposed out of the sounding unit; The two groups of central magnetic structures are arranged on the yoke iron, the two groups of central magnetic structures are oppositely arranged, a gap is reserved between the two groups of central magnetic structures, and the fixed table is positioned in the gap; the voice coil is provided with inner concave parts at two opposite sides, the inner concave parts are positioned in the gaps, and the fixed table is positioned between the two inner concave parts; A first side magnetic structure provided on the yoke, the first side magnetic structure having an extension portion that protrudes into a recessed area of the concave portion; A diaphragm assembly; The centering support piece comprises an inner fixing portion, a cantilever portion, a lifting portion and an outer fixing portion which are sequentially connected, wherein the inner fixing portion is fixed on the fixing table and is electrically conducted with the conductive piece, and the outer fixing portion is fixed on the vibrating diaphragm assembly and is electrically conducted with the voice coil. In an embodiment, the cantilever parts are respectively connected to two sides of the inner fixing part. In an embodiment, the centering support is a central symmetrical structure. In one embodiment, a window is provided on the yoke, and the fixing table is embedded in the window. In one embodiment, the voice coil is of planar symmetrical structure. In an embodiment, an inner bonding pad is disposed on the inner fixing portion of the centering support, the inner bonding pad is electrically connected to the conductive member, an outer bonding pad is disposed on the outer fixing portion and is electrically connected to the inner bonding pad, and the outer bonding pad is electrically connected to the voice coil. In an embodiment, the flexible printed circuit board further comprises an FPC board, the centering support piece and the conductive piece are respectively a partial area of the FPC board, and the fixing table is provided with a through hole for the partial area of the FPC board to pass through. In one embodiment, the recess is located on the long side or the short side of the voice coil. In an embodiment, the voice coil further comprises a second side magnetic structure, and the second side magnetic structure is located on the outer side of the side, where the inner concave part is not formed, of the voice coil. In an embodiment, the voice coil further comprises a flange, wherein the flange is located on the outer side of the edge, where the voice coil is not provided with the concave portion, and the flange is formed by bending a part of the area of the yoke. The voice coil loudspeaker has the advantages that the voice coil loudspeaker can effectively improve the effective length of the voice coil in the magnetic circuit system under the condition that the whole volume is not increased, so that the BL value of the voice coil loudspeaker is improved, the sensitivity of the voice coil loudspeaker is improved, the performance of the miniature loudspeaker is improved, centering support pieces are arranged in the centering support pieces, the four corners of the voice coil loudspeaker are not required to be provided with the centering support pieces, the total volume of the side magnetic structure can be set to be larger, the BL value of the voice coil loudspeaker is further improved, and the performance of the voice coil loudspeaker is improved. Drawings In order to