CN-224218504-U - Sound producing unit

Abstract

The utility model discloses a sound producing unit which comprises a vibrating diaphragm assembly, a voice coil, a spacer, an annular sealing cover, two basin frames and two magnetic circuit assemblies, wherein sound outlets are formed in at least one basin frame, the magnetic circuit assemblies are connected with the basin frames in a one-to-one correspondence mode, the magnetic circuit assemblies are provided with magnetic gaps, the two sides of the vibrating diaphragm assembly are respectively connected with the basin frames, a hollowed-out window is formed in the center of the vibrating diaphragm assembly, the voice coil is located at the hollowed-out window and is connected with the vibrating diaphragm assembly, the top end and the bottom end of the voice coil respectively extend into the two magnetic gaps, the spacer is arranged in a hollow area of the voice coil, the edge of the spacer is connected with the inner peripheral wall of the voice coil, the annular sealing cover comprises an outer side part, an accommodating part and an inner side part, the accommodating part accommodates part of the voice coil and is fixedly connected with the voice coil, the outer side part is in sealing connection with the vibrating diaphragm assembly, and the inner side part is in sealing connection with the spacer. The sound generating unit has good performance, and the arrangement of the annular sealing cover can improve the structural stability of the sound generating unit and reduce the separation risk of the voice coil and the vibrating diaphragm assembly/the spacer.

Inventors

• LIN JIAPING
• KANG KAIXUAN

Assignees

• 深圳市维仕声学有限公司

Dates

Publication Date

20260508

Application Date

20250514

Claims (10)

1. 1. The sound generating unit is characterized by comprising Two basin frames, at least one of which is provided with a sound outlet; The two magnetic circuit assemblies are connected with the basin stand in a one-to-one correspondence manner, and the magnetic circuit assemblies are provided with magnetic gaps; The vibrating diaphragm assembly is connected with the basin stand at two sides of the vibrating diaphragm assembly respectively, and a hollowed-out window is arranged in the center of the vibrating diaphragm assembly; The voice coil is positioned at the hollowed-out window, and the top end and the bottom end of the voice coil respectively extend into the two magnetic gaps; The spacer is arranged in the hollow area of the voice coil, and the edge of the spacer is connected with the inner peripheral wall of the voice coil; The annular sealing cover comprises an outer side part, an accommodating part and an inner side part which are sequentially connected, the accommodating part accommodates a part of the voice coil and is fixedly connected with the voice coil, the outer side part is in sealing connection with the vibrating diaphragm assembly, and the inner side part is in sealing connection with the spacer.
2. 2. The sound generating unit according to claim 1, wherein the housing portion has a concave cross section, and at least one of a top surface, a bottom surface, an inner wall surface, and an outer wall surface of the voice coil is fixedly connected to the housing portion.
3. 3. The sound generating unit according to claim 1, wherein the diaphragm assembly is disposed corresponding to a middle portion of the voice coil.
4. 4. The sound generating unit according to claim 1, wherein two of said magnetic circuit assemblies are mirror symmetrical.
5. 5. The sound generating unit according to claim 1, wherein the diaphragm assembly comprises a sound membrane which is integrally formed in a ring frame shape, the sound membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, and the outer fixing part is connected with at least one basin frame.
6. 6. The sound generating unit according to claim 5, wherein the outer fixing portions are fixedly connected to the two tub frames, respectively.
7. 7. The sound generating unit according to claim 6, wherein the outer fixing part comprises a first part and a second part connected, the first part is located between the two tub frames and connected with the two tub frames respectively, and the second part is connected with the outer peripheral wall of one tub frame.
8. 8. The sound generating unit of claim 5, wherein the diaphragm assembly further comprises an annular center piece, the annular center piece is fixed on the inner fixing portion, and the outer side portion is directly or indirectly connected with the annular center piece.
9. 9. The sound generating unit according to claim 8, wherein an inner edge of the annular center piece is connected to an outer peripheral wall of the voice coil.
10. 10. The sound generating unit of claim 1, further comprising a support assembly connecting the voice coil and the frame.

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 Along 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, are widely applied in daily life of people, and in these mobile electronic devices, a sound generating unit is an essential component in the mobile electronic devices, and the quality of sound generated by the sound generating unit directly influences the user experience when the user uses these mobile electronic devices. The existing sounding unit generally adopts a single-side magnetic circuit assembly scheme, namely, the voice coil and the magnetic circuit are positioned on one side of the vibrating diaphragm assembly, however, in the working state, the voice coil can be far away from a magnetic gap when vibrating upwards, so that the BL is poor in symmetry and flatness, and meanwhile, the distortion is reduced and the performance is improved. Disclosure of utility model The utility model solves the technical problem of providing a high-performance sounding unit. In order to solve the technical problems, the utility model adopts the technical scheme that the sounding unit comprises: Two basin frames, at least one of which is provided with a sound outlet; The two magnetic circuit assemblies are connected with the basin stand in a one-to-one correspondence manner, and the magnetic circuit assemblies are provided with magnetic gaps; The vibrating diaphragm assembly is connected with the basin stand at two sides of the vibrating diaphragm assembly respectively, and a hollowed-out window is arranged in the center of the vibrating diaphragm assembly; The voice coil is positioned at the hollowed-out window, and the top end and the bottom end of the voice coil respectively extend into the two magnetic gaps; The spacer is arranged in the hollow area of the voice coil, and the edge of the spacer is connected with the inner peripheral wall of the voice coil; The annular sealing cover comprises an outer side part, an accommodating part and an inner side part which are sequentially connected, the accommodating part accommodates a part of the voice coil and is fixedly connected with the voice coil, the outer side part is in sealing connection with the vibrating diaphragm assembly, and the inner side part is in sealing connection with the spacer. In an embodiment, the section of the accommodating portion is concave, and at least one of the top surface, the bottom surface, the inner wall surface and the outer wall surface of the voice coil is fixedly connected with the accommodating portion. In one embodiment, the diaphragm assembly is disposed corresponding to a middle portion of the voice coil. In an embodiment, the two magnetic circuit assemblies are mirror symmetrical. In an embodiment, the vibrating diaphragm assembly comprises a sound membrane which is integrally in a ring frame shape, the sound membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, and the outer fixing part is connected with at least one basin frame. In an embodiment, the outer fixing portions are fixedly connected with the two basin frames respectively. In one embodiment, the outer fixing portion includes a first portion and a second portion connected to each other, the first portion is located between the two tub frames and connected to the two tub frames, respectively, and the second portion is connected to an outer peripheral wall of one tub frame. In an embodiment, the diaphragm assembly further includes an annular middle patch, the annular middle patch is fixed on the inner fixing portion, and the outer side portion is directly or indirectly connected to the annular middle patch. In one embodiment, the inner edge of the annular middle paste is connected with the outer peripheral wall of the voice coil. In an embodiment, the voice coil assembly further comprises a support assembly, and the support assembly is connected with the voice coil and the basin frame. The sound generating unit has the advantages that the sound generating unit is novel in structure, the double-magnetic-circuit design is adopted, the front cavity space and the rear cavity space of the sound generating unit can be fully utilized, the total volume of magnetic steel is increased, the BL symmetry degree and the BL flatness are improved, distortion is reduced, the performance of the sound generating unit is improved, the structural stability of the sound generating unit can be improved through the arrangement of the annular sealing cover, and the separation risk of a voice coil and a vibrating diaphragm assembly/a diaphragm is reduced. Drawings In order to more clearly illustrate the embodiments of the present utility model or