US-12627931-B2 - Speaker

US12627931B2US 12627931 B2US12627931 B2US 12627931B2US-12627931-B2

Abstract

The present application provides a speaker, which comprises a housing as well as a magnetic circuit system and a vibration system arranged the housing, the vibration system comprises a planar first voice coil which can generate mechanical motion under the action of a magnetic field of the magnetic circuit system, a planar first vibration diaphragm driven by the first voice coil, and the first voice coil is arranged on the first vibration diaphragm; the magnetic circuit system comprises a plurality of magnets, a gap is formed between the magnets, and at least a portion of the first voice coil corresponds to the gap between the magnets. The present speaker is different from a conventional moving-coil type speaker, and the speaker can be made smaller than a conventional moving-coil type speaker and with respect to high frequency performance, the speaker has higher sound pressure and a better bandwidth.

Inventors

Zhaoyang HE
Lei Yang

Assignees

CHANGZHOU AMT CO., LTD

Dates

Publication Date: 20260512
Application Date: 20210430
Priority Date: 20210425

Claims (9)

1 . A speaker comprising a housing, and a magnetic circuit system and a vibration system arranged in the housing, wherein the vibration system comprises a planar first voice coil capable of generating mechanical motion under the action of a magnetic field of the magnetic circuit system, and a planar first vibration diaphragm driven by the first voice coil, wherein the first voice coil is arranged on the first vibration diaphragm, and the magnetic circuit system comprises a plurality of magnets; a gap is formed between the magnets, at least part of the first voice coil corresponds to the gap between the magnets, the first voice coil does not protrude into the gap between the magnets; the magnetic circuit system comprises a first annular magnet, a second annular magnet surrounding the first annular magnet, and a third annular magnet surrounding the second annular magnet; the vibration system comprises a second voice coil and a second vibration diaphragm connected to the second voice coil and driven by the second voice coil, the first voice coil corresponds to a gap between the first annular magnet and the second annular magnet, and the second voice coil corresponds to a gap between the second annular magnet and the third annular magnet.
2 . The speaker according to claim 1 , wherein the first vibration diaphragm comprises an intermediate portion and a folding ring surrounding the intermediate portion, and the folding ring is flat or arc-shaped.
3 . The speaker according to claim 1 , wherein the magnetic circuit system comprises a first elongated magnet, a second elongated magnet and a third elongated magnet which are sequentially arranged at intervals; at least a portion of the first voice coil corresponds to a gap between the first elongated magnet and the second elongated magnet and a gap between the second elongated magnet and the third elongated magnet.
4 . The speaker according to claim 3 , wherein the first elongated magnet, the second elongated magnet, and the third elongated magnet are square magnets.
5 . The speaker according to claim 1 , wherein the magnetic circuit system comprises a first annular magnet and a second annular magnet, the second annular magnet is surrounding the first annular magnet, an annular gap is formed between the first annular magnet and the second annular magnet, and the first voice coil is correspondingly arranged in the gap between the first annular magnet and the second annular magnet.
6 . The speaker according to claim 1 , wherein the vibration system comprises a planar flaky dome, the dome is arranged on the first vibration diaphragm.
7 . The speaker according to claim 6 , wherein the dome is arranged in the middle of the first vibration diaphragm.
8 . The speaker according to claim 6 , wherein the dome is provided on the top surface of the first vibration diaphragm, or the dome is provided on the bottom surface of the first vibration diaphragm, or the domes are embedded in the first vibration diaphragm and exposed upward and downward.
9 . The speaker according to claim 6 , wherein the housing is circular, the first vibration diaphragm is circular and the dome is circular, or the housing is square, the first vibration diaphragm is square and the dome is square.

Description

RELATED APPLICATION The present application claims priority of Chinese patent application with the application number of 202120869807.4 and the title of “speaker” filed in the Patent Office of the People's Republic of China on Apr. 25, 2021, the entirety of which is hereby incorporated by reference. TECHNICAL FIELD The invention relates to the technical field of audio technology, in particular to a speaker. BACKGROUND OF THE INVENTION Traditional speakers are mostly moving-coil type, which usually including a vibration diaphragm, a voice coil and a magnet. and a magnet is arranged below a voice coil, and the voice coil vibrates under the action of a magnetic field to drive the vibration diaphragm to vibrate. Due to the limitation of the structure of the moving-coil type speaker, the volume of the moving-coil speaker is large and is difficult to improve. BRIEF SUMMARY OF THE INVENTION Technical Issue The technical problem to be solved by the invention is to provide an improved speaker aiming at the defects in the related art. Solution to the Issue Technical Solution The technical solution adopted by the invention to solve the technical problems comprises: providing a speaker, which comprises a housing, a magnetic circuit system and a vibration system, wherein the magnetic circuit system and the vibration system are arranged in the housing, and the vibration system comprises a planar first voice coil capable of generating mechanical motion under the action of a magnetic field of the magnetic circuit system, and a planar first vibration diaphragm driven by the first voice coil; the first voice coil is arranged on the first vibration diaphragm, the magnetic circuit system comprises a plurality of magnets, one or more gaps are formed among the magnets, and at least part of the first voice coil corresponds to the gap among the magnets. Preferably, the first vibration diaphragm comprises an intermediate portion and a folding ring surrounding the periphery of the intermediate portion, and the folding ring is flat or arc-shaped. Preferably, the magnetic circuit system comprises a first elongated magnet, a second elongated magnet and a third elongated magnet which are sequentially arranged at intervals, and at least a part of the first voice coil corresponds to a gap between the first elongated magnet and the second elongated magnet as well as a gap between the second elongate magnet and the third elongated magnet. Preferably, the first elongated magnet, the second elongated magnet, and the third elongated magnet are square magnets. Preferably, the magnetic circuit system comprises a first annular magnet and a second annular magnet, the second annular magnet surrounds the periphery of the first annular magnet, an annular gap is formed between the first annular magnet and the second annular magnet, and the first voice coil is correspondingly arranged in the gap between the first annular magnet and the second annular magnet. Preferably, the magnetic circuit system comprises a first annular magnet, a second annular magnet surrounding the first annular magnet and a third annular magnet surrounding the second annular magnet, and the vibration system comprises a second voice coil and a second vibration diaphragm connected to the second voice coil and driven by the second voice coil. The first voice coil corresponds to a gap between the first annular magnet and the second annular magnet, and the second voice coil corresponds to a gap between the second annular magnet and the third annular magnet. Preferably, the vibration system comprises a planar flaky dome, and the dome is arranged on the first vibration diaphragm. Preferably, the dome is arranged in the middle of the first vibration diaphragm. Preferably, the dome is disposed on the top surface of the first vibration diaphragm, or the dome is disposed on the bottom surface of the first vibration diaphragm, or the dome is embedded in the first vibration diaphragm and exposed upward and downward. Preferably, the housing is circular, the first vibration diaphragm is circular, and the dome is circular; or the housing is square, the first vibration diaphragm is square, and the dome is square. BENEFICIAL EFFECTS OF THE INVENTION Beneficial Effects The implementation of the technical solution of the invention has at least the following beneficial effects: the speaker is different from the conventional moving-coil type speaker, can be made smaller than the conventional moving-coil type speaker, and has higher sound pressure level and better bandwidth in high frequency performance. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS Description the Drawings In order to more clearly illustrate the technical solutions in the embodiments of the invention, the following is a brief introduction to the embodiments or the drawings used in the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ord