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CN-224218510-U - Sound producing unit

CN224218510UCN 224218510 UCN224218510 UCN 224218510UCN-224218510-U

Abstract

The utility model discloses a sounding unit which comprises a yoke, a plurality of voice coils and at least four central magnetic structures, wherein a plurality of longitudinal windows and a plurality of transverse windows are arranged on the yoke, the longitudinal windows are communicated with the transverse windows, longitudinal flanging is respectively arranged on two opposite sides of each longitudinal window, transverse flanging is respectively arranged on two opposite sides of each transverse window, the central magnetic structures are arranged on the yoke in an N-M rectangular array, N is an even number greater than or equal to 2, M is an even number greater than or equal to 2, longitudinal windows are correspondingly arranged between two adjacent columns of central magnetic structures, transverse windows are correspondingly arranged between two adjacent rows of central magnetic structures, the magnetic poles of the two adjacent central magnetic structures face opposite directions, the voice coils are correspondingly arranged with the central magnetic structures one by one, and when the voice coils are electrified, the current flow directions of the adjacent edges of the two adjacent voice coils are the same. The sounding unit solves the problem of vibration sounding of the sounding unit of the multi-voice coil framework in a non-started state.

Inventors

  • LIN JIAPING
  • KANG KAIXUAN

Assignees

  • 深圳市维仕声学有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (10)

  1. 1. The sound generating unit is characterized by comprising The yoke is provided with a plurality of longitudinal windows and a plurality of transverse windows, the longitudinal windows are communicated with the transverse windows, longitudinal flanging is respectively arranged on two opposite sides of the longitudinal windows, and transverse flanging is respectively arranged on two opposite sides of the transverse windows; The magnetic yoke comprises at least four central magnetic structures, wherein the central magnetic structures are arranged on the yoke, the at least four central magnetic structures are arranged in an N-by-M rectangular array, N is an even number greater than or equal to 2, and M is an even number greater than or equal to 2; The voice coils are arranged in one-to-one correspondence with the central magnetic structures, and when the voice coils are electrified, the current flow directions of adjacent edges of two adjacent voice coils are the same.
  2. 2. The sound generating unit according to claim 1, characterized in that the outer side of the central magnetic structure at the end in the column direction is provided with a first side magnetic structure or a first outer turn-up.
  3. 3. The sound generating unit according to claim 1, characterized in that a second side magnetic structure or a second outer flange is provided outside the center magnetic structure at the end in the row direction.
  4. 4. The sound unit of claim 1 wherein the top end face of the longitudinal flange is flush with or below the top surface of the central magnetic structure and the top end face of the transverse flange is flush with or below the top surface of the central magnetic structure.
  5. 5. The sound generating unit according to claim 1, wherein each of the voice coils is connected in series or in parallel.
  6. 6. The sound generating unit according to claim 1, wherein at least two adjacent voice coils are electrically connected through a bridging FPC board fixedly connected to the adjacent two voice coils.
  7. 7. The sound unit of claim 1, wherein the transverse flange is connected to the longitudinal flange at a location where the transverse window communicates with the longitudinal window.
  8. 8. The sound unit of claim 7, wherein the transverse flange is connected to the longitudinal flange by an arcuate flange at a location where the transverse window communicates with the longitudinal window.
  9. 9. The sound unit of claim 1, wherein a longitudinal end flange is connected to an end edge of the longitudinal window, and the longitudinal end flange connects two adjacent longitudinal flanges.
  10. 10. The sound unit of claim 1, wherein a transverse end flange is connected to an end edge of the transverse window, and the transverse end flange connects two adjacent transverse flanges.

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 Due to miniaturization and thinness of electronic devices such as mobile phones and tablet computers, the installation space reserved for the sounding unit is smaller and smaller, but the requirement on the acoustic performance of the sounding unit is higher and higher, so that how to improve the performance of the sounding unit under the condition that the structure and the size of the sounding unit are limited becomes a key. In order to improve the acoustic performance of the light and thin sound generating unit, the related art provides a design scheme of a multi-voice coil matching multi-center magnetic structure, and the sound generating unit can ensure the acoustic performance while reducing the thickness. However, in the whole electronic equipment with the sounding units with the multi-voice coil structure, when the wires are conducted with alternating current near the sounding units and the sounding units are in a stop state, alternating current of the wires generates an alternating magnetic field, the alternating magnetic field induces voice coils of the sounding units to generate induced current, the voice coils generating the induced current can be acted by magnetic fields of magnetic circuit components in the sounding units, so that the voice coils receive corresponding ampere force, magnetic poles of central magnetic structures in the voice coils face the same direction, and the induced current directions of the voice coils are consistent, so that ampere force of adjacent voice coils under the action of the magnetic fields is the same in magnitude and the same in direction, and vibration sounding phenomena can occur to the diaphragm components even in the non-started state of the sounding units, and the use experience of users can be affected. Disclosure of utility model The utility model mainly aims to provide a high-performance sounding unit of a multi-voice coil framework, and aims to solve the problem of vibration sounding existing in a non-started state of the sounding unit of the existing multi-voice coil framework. In order to solve the technical problems, the utility model adopts the technical scheme that the sounding unit comprises: The yoke is provided with a plurality of longitudinal windows and a plurality of transverse windows, the longitudinal windows are communicated with the transverse windows, longitudinal flanging is respectively arranged on two opposite sides of the longitudinal windows, and transverse flanging is respectively arranged on two opposite sides of the transverse windows; The magnetic yoke comprises at least four central magnetic structures, wherein the central magnetic structures are arranged on the yoke, the at least four central magnetic structures are arranged in an N-by-M rectangular array, N is an even number greater than or equal to 2, and M is an even number greater than or equal to 2; The voice coils are arranged in one-to-one correspondence with the central magnetic structures, and when the voice coils are electrified, the current flow directions of adjacent edges of two adjacent voice coils are the same. In an embodiment, in the column direction, a first side magnetic structure or a first outer flange is provided outside the central magnetic structure at the end. In an embodiment, in the row direction, a second side magnetic structure or a second outer flange is arranged outside the central magnetic structure at the end. In one embodiment, the top end surface of the longitudinal flange is flush with or lower than the top surface of the central magnetic structure, and the top end surface of the transverse flange is flush with or lower than the top surface of the central magnetic structure. In one embodiment, each of the voice coils is connected in series or in parallel. In an embodiment, at least two adjacent voice coils are electrically conducted through a bridging FPC board, and the bridging FPC board is fixedly connected with the two adjacent voice coils. In an embodiment, the transverse flange is connected to the longitudinal flange at a point where the transverse window communicates with the longitudinal window. In an embodiment, at the communication position of the transverse opening and the longitudinal opening, the transverse flange and the longitudinal flange are connected through an arc flange. In one embodiment, a longitudinal end flange is connected to the end edge of the longitudinal window, and the longitudinal end flange connects two adjacent longitudinal flanges. In one embodiment, a transverse end flange is connected to the end edge of the transverse window, and the transverse end flange connects two adjacent transverse flanges. The utility model has the beneficial effects that: The sounding unit is novel in structure, has at least four central magnetic structures which