CN-224218509-U - Micro-speaker

CN224218509UCN 224218509 UCN224218509 UCN 224218509UCN-224218509-U

Abstract

The utility model discloses a miniature loudspeaker which comprises a basin frame, a magnetic circuit assembly, a bass vibration assembly and a treble vibration assembly, wherein the magnetic circuit assembly comprises a lower yoke, a central magnetic structure, an edge magnetic structure, an upper yoke and a treble magnetic structure, the central magnetic structure comprises a lower central magnetic steel, a central washer and an upper central magnetic steel which are sequentially arranged from bottom to top, the lower central magnetic steel is connected with the lower yoke, the upper central magnetic steel is connected with the upper yoke, the opposite sides of the central magnetic structure are respectively and correspondingly provided with the edge magnetic structure to form a bass magnetic gap, the edge magnetic structure comprises a lower edge magnetic steel, bian Huasi and an upper edge magnetic steel which are sequentially arranged from bottom to top, the lower edge magnetic steel is connected with the lower yoke, the upper edge magnetic steel is connected with the upper yoke, a mounting through hole is formed in the lower central magnetic steel, the lower yoke is provided with a window communicated with the mounting through hole, and the treble magnetic structure is arranged in the mounting through hole and forms the treble magnetic gap with the lower central magnetic steel. The miniature loudspeaker has novel structure, can realize ultra-thin and high-low frequency division, and has good sound effect.

Inventors

ZHANG JUNLI
ZHANG WENHUA

Assignees

深圳市维仕声学有限公司

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (10)

1. The micro-speaker is characterized by comprising A basin stand; The magnetic circuit assembly comprises a lower yoke, a central magnetic structure, an edge magnetic structure, an upper yoke and a high-pitched magnetic structure, wherein the central magnetic structure comprises lower central magnetic steel, a central washer and upper central magnetic steel which are sequentially arranged from bottom to top, the lower central magnetic steel is connected with the lower yoke, the upper central magnetic steel is connected with the upper yoke, the two opposite sides of the central magnetic structure are respectively and correspondingly provided with the edge magnetic structure to form a low-pitched magnetic gap, the edge magnetic structure comprises lower magnetic steel, bian Huasi and upper magnetic steel which are sequentially arranged from bottom to top, the lower magnetic steel is connected with the lower yoke, the upper magnetic steel is connected with the upper yoke, a mounting through hole is formed in the lower central magnetic steel, a window communicated with the mounting through hole is formed in the lower magnetic steel, and the high-pitched magnetic structure is arranged in the mounting through hole and forms a high-pitched magnetic gap with the lower central magnetic steel; The low-frequency vibration assembly comprises a low-frequency vibration membrane assembly, a framework and a low-frequency voice coil, wherein the low-frequency vibration membrane assembly is connected with a basin frame and an upper yoke, the low-frequency voice coil is arranged in the low-frequency magnetic gap, the low-frequency vibration membrane assembly comprises an inner folded ring and an outer folded ring, the framework is connected with the low-frequency vibration membrane assembly and the low-frequency voice coil, the framework comprises an outer connecting part, a stepped part and an inner connecting part which are sequentially connected, the inner connecting part is connected with the low-frequency voice coil, and the outer connecting part is positioned between the inner folded ring and the outer folded ring and is connected with the low-frequency vibration membrane assembly; The high-pitch vibration assembly comprises a high-pitch voice coil and a high-pitch vibration film assembly connected with the high-pitch voice coil and the lower yoke, the high-pitch voice coil is arranged in the Gao Yinci gap, and the high-pitch vibration film assembly seals the window.
2. The micro-speaker of claim 1, wherein the inner connection portions are provided at both ends of the center magnetic structure, respectively.
3. The micro-speaker of claim 1, wherein the inner fold ring is protruded in a direction away from the lower yoke, and the outer fold ring is protruded in a direction toward the lower yoke.
4. The micro-speaker of claim 1, wherein the step comprises at least one step structure.
5. The micro-speaker of claim 4, wherein the step surface of the step structure is provided with a reinforcing member.
6. The micro-speaker of claim 1, wherein the inner connection portion is connected to an outer wall surface and/or a top surface of the voice coil.
7. The micro-speaker of claim 1, wherein the upper yoke has an upper escape groove for escaping the low-pitched voice coil, and/or the lower yoke has a lower escape groove for escaping the low-pitched voice coil.
8. The micro-speaker of claim 1, wherein the bass diaphragm assembly comprises an inner sound membrane, a bass middle paste and an outer sound membrane which are sequentially connected from inside to outside, the inner folding ring is positioned on the inner sound membrane, the outer folding ring is positioned on the outer sound membrane, and the outer connecting part is fixedly connected with the bass middle paste.
9. The micro-speaker of claim 8, wherein the bass center speaker comprises a first portion, a lifting portion and a second portion which are sequentially connected from inside to outside, a distance between the second portion and the lower yoke is greater than a distance between the first portion and the lower yoke, and an outer edge of the inner sound membrane is connected with the first portion.
10. The micro-speaker of claim 1, further comprising a support frame integrally formed in a ring frame shape, wherein the support frame connects an inner edge of the bass diaphragm assembly with the upper magnetic steel, and the upper yoke is indirectly connected with the upper magnetic steel through the support frame.

Description

Micro-speaker Technical Field The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker. Background The micro-speaker is widely applied to portable electronic devices such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, the requirements of the micro-speakers applied therein are increasing, and the portable electronic devices on the market are lighter and thinner, especially the mobile phones are adopting the folding screen design, which requires that the micro-speakers still have good sound effects under the condition of ultra-thin. Disclosure of utility model The utility model solves the technical problem of providing an ultrathin micro loudspeaker with good sound effect. In order to solve the technical problems, the utility model adopts the technical scheme that the micro loudspeaker comprises: a basin stand; The magnetic circuit assembly comprises a lower yoke, a central magnetic structure, an edge magnetic structure, an upper yoke and a high-pitched magnetic structure, wherein the central magnetic structure comprises lower central magnetic steel, a central washer and upper central magnetic steel which are sequentially arranged from bottom to top, the lower central magnetic steel is connected with the lower yoke, the upper central magnetic steel is connected with the upper yoke, the two opposite sides of the central magnetic structure are respectively and correspondingly provided with the edge magnetic structure to form a low-pitched magnetic gap, the edge magnetic structure comprises lower magnetic steel, bian Huasi and upper magnetic steel which are sequentially arranged from bottom to top, the lower magnetic steel is connected with the lower yoke, the upper magnetic steel is connected with the upper yoke, a mounting through hole is formed in the lower central magnetic steel, a window communicated with the mounting through hole is formed in the lower magnetic steel, and the high-pitched magnetic structure is arranged in the mounting through hole and forms a high-pitched magnetic gap with the lower central magnetic steel; The low-frequency vibration assembly comprises a low-frequency vibration membrane assembly, a framework and a low-frequency voice coil, wherein the low-frequency vibration membrane assembly is connected with a basin frame and an upper yoke, the low-frequency voice coil is arranged in the low-frequency magnetic gap, the low-frequency vibration membrane assembly comprises an inner folded ring and an outer folded ring, the framework is connected with the low-frequency vibration membrane assembly and the low-frequency voice coil, the framework comprises an outer connecting part, a stepped part and an inner connecting part which are sequentially connected, the inner connecting part is connected with the low-frequency voice coil, and the outer connecting part is positioned between the inner folded ring and the outer folded ring and is connected with the low-frequency vibration membrane assembly; The high-pitch vibration assembly comprises a high-pitch voice coil and a high-pitch vibration film assembly connected with the high-pitch voice coil and the lower yoke, the high-pitch voice coil is arranged in the Gao Yinci gap, and the high-pitch vibration film assembly seals the window. In an embodiment, the two ends of the central magnetic structure are respectively provided with the inner connecting parts correspondingly. In an embodiment, the inner fold ring protrudes in a direction away from the lower yoke, and the outer fold ring protrudes in a direction toward the lower yoke. In one embodiment, the step includes at least one step structure. In one embodiment, the step surface of the step structure is provided with a reinforcing member. In one embodiment, the inner connecting portion is connected to an outer wall surface and/or a top surface of the bass voice coil. In one embodiment, the upper yoke has an upper escape groove for escaping the bass voice coil, and/or the lower yoke has a lower escape groove for escaping the bass voice coil. In an embodiment, the bass diaphragm assembly includes an inner sound membrane, a bass middle paste and an outer sound membrane which are sequentially connected from inside to outside, the inner folded ring is located on the inner sound membrane, the outer folded ring is located on the outer sound membrane, and the outer connecting portion is fixedly connected with the bass middle paste. In an embodiment, the bass middle paste comprises a first part, a lifting part and a second part which are sequentially connected from inside to outside, the distance between the second part and the lower yoke is larger than the distance between the first part and the lower yoke, and the outer edge of the inner sound membrane is connected with the first part. In an embodiment, the device further comprises a support frame which is in