WO2020248194A1

WO2020248194A1 - Loudspeaker

Info

Publication number: WO2020248194A1
Application number: PCT/CN2019/091123
Authority: WO
Inventors: 肖波; 令狐荣林; 刘晓东
Original assignee: 瑞声声学科技(深圳)有限公司
Priority date: 2019-06-11
Filing date: 2019-06-13
Publication date: 2020-12-17
Also published as: CN110191403A; CN110191403B

Abstract

The present invention belongs to the technical field of electroacoustic conversion, and provides a loudspeaker. The loudspeaker comprises a frame, and a magnetic circuit system and a vibration system held in the frame, wherein the vibration system comprises a vibration diaphragm and a voice coil, the vibration diaphragm comprises a vibration portion and a fixing portion extending from an edge of the vibration portion, the fixing portion is fixed to the frame, and the vibration portion is fixed to the voice coil; the frame comprises a main body portion and a metal ring mounted on a side, close to the vibration diaphragm, of the main body portion; the metal ring is located between the main body portion and the vibration diaphragm; the fixing portion comprises a first connecting portion connected to the edge of the vibration portion and a second connecting portion bending and extending from the first connecting portion toward the metal ring; and the metal ring comprises a first fixing face abutting against and fixing the first connecting portion and a second fixing face fixedly attached to the second connecting portion. According to the present invention, by means of the fixing portion on the vibration diaphragm being attached and fixed to the metal ring on the frame, the metal ring can increase the vibration space of the vibration portion while also ensuring the reliability and the overall strength of the product, thereby improving the audio performance of the product.

Description

speaker

Technical field

The invention relates to the technical field of electro-acoustic conversion, in particular to a loudspeaker.

Background technique

With the rapid development of technology, the popularity of speakers is getting higher and higher. People's requirements for speakers are not only limited to the playback of video and audio, but also have higher requirements for the sound quality and reliability of the sound played by the speakers. The speakers are directly related to The sound quality of the playback sound is good or bad and the product is stable.

In the prior art, the diaphragm in the loudspeaker is usually glued to each other with a plastic frame to fix the edge of the diaphragm. However, the part where the plastic frame and the edge of the diaphragm are glued to each other is made of plastic. In order to ensure the overall connection strength, the width of the glued part between the plastic frame and the edge of the diaphragm is usually increased to enlarge the frame and the edge of the diaphragm. The glued area between, but will reduce the width of the ring on the diaphragm, which affects the audio performance of the product.

technical problem

The purpose of the present invention is to provide a loudspeaker, which aims to solve the problem that the direct bonding of the diaphragm in the prior art loudspeaker with the plastic frame will affect the audio performance.

Technical solutions

The technical solution of the present invention is as follows: a speaker is provided, the speaker includes a basin frame with a storage space, and a magnetic circuit system and a vibration system housed in the basin frame, the vibration system including a diaphragm and driving the vibration A voice coil with a diaphragm that vibrates, the diaphragm includes a vibrating portion and a fixing portion extending from an edge of the vibrating portion, the fixing portion is fixed to the basin frame, the vibrating portion is fixed to the voice coil; the basin The frame includes a main body part and a metal ring mounted on a side of the main body part close to the diaphragm. The metal ring is located between the main body part and the diaphragm, and the fixing part includes an edge of the vibration part. A first connecting portion connected and a second connecting portion bent and extended from the first connecting portion toward the metal ring, the metal ring including a first fixing surface that abuts against and fixes the first connecting portion, and A second fixing surface that is attached and fixed to the second connecting portion.

Further, the main body portion includes a support portion opposite to the first connecting portion, the support portion supports the metal ring, the support portion is formed with a protrusion extending in the direction of the diaphragm, and the metal ring It is sleeved on the outer periphery of the protrusion.

Further, the supporting portion extends in the direction of the diaphragm to form a clamping portion spaced apart from the protruding portion, and a accommodating portion for accommodating and installing the metal ring is formed between the clamping portion and the protruding portion groove.

Further, the second connecting portion is sandwiched between the metal ring and the clamping portion.

Further, the first fixing surface is glued and fixed to the first connecting portion, and the second fixing surface is glued and fixed to the second fixing portion.

Further, the main body portion further includes an extension post extending from an end of the support portion away from the diaphragm toward a direction away from the metal ring, and the metal ring extends on a side away from the diaphragm to form an attachment A metal extension piece on the outside of the extension column.

Further, the metal ring, the metal extension piece, and the main body part are injection-molded into one body, a positioning hole is formed through the metal extension piece, and the extension post is correspondingly formed to extend into the positioning hole. .

Further, the magnetic circuit system includes a magnetic yoke corresponding to the extension column and a magnetic steel assembly fixed on the magnetic yoke, the magnetic steel assembly has a magnetic gap, and one end of the voice coil away from the vibration part Extend into the magnetic gap.

Further, the vibrating part includes a dome and a folding ring connected between the dome and the fixing part, the folding ring is an arc-shaped structure protruding in a direction away from the basin frame, the The voice coil is connected to the dome.

Further, the magnetic steel assembly includes a main magnetic steel corresponding to the dome, a secondary magnetic steel spaced apart from the main magnetic steel, and a side of the secondary magnetic steel that is stacked on the side away from the yoke and connected to The auxiliary magnetic steel to which the metal ring is attached.

Further, the magnetic circuit system also includes an upper clamping plate stacked on the side of the auxiliary magnetic steel away from the yoke, and the auxiliary magnetic steel is located on the side of the upper clamping plate away from the voice coil. The upper splint is integrally formed with the main body part.

Further, the material of the main body is plastic, and the metal ring is a steel ring.

Beneficial effect

In the present invention, the metal ring is installed on the side of the main body of the basin frame close to the diaphragm, and the first fixing surface on the metal ring and the first connecting portion on the fixing portion of the diaphragm are used to abut against each other and fixed. The second fixing surface of the diaphragm and the second connecting portion on the fixing portion of the diaphragm are attached and fixed to each other, so that the fixing portion of the diaphragm can be stably fixed on the metal ring, and the rigidity of the metal ring is used to ensure the overall strength, so that the It is necessary to increase the width of the first connecting part on the fixed part to realize the bonding that meets the strength requirements, thereby increasing the vibration space of the vibrating part while ensuring the reliability and overall strength of the product, so as to improve the audio performance of the product, and It can improve the performance of the product such as drop resistance and extrusion resistance.

Description of the drawings

FIG. 1 is a schematic diagram of the overall structure of a speaker provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of an exploded structure of the speaker shown in FIG. 1;

Fig. 3 is a schematic sectional view of the structure taken along the A-A direction in Fig. 1;

FIG. 4 is a schematic diagram of the enlarged structure of area B in FIG. 3.

Embodiments of the invention

The present invention will be further described below with reference to the drawings and embodiments.

Refer to Fig. 1 to Fig. 3, which is a speaker provided by an embodiment of the present invention. The speaker includes a basin frame 1 with a storage space and a magnetic circuit system 3 and a vibration system 4 housed in the basin frame 1. The vibration system 4 includes a diaphragm 41 and a voice coil 42 that drives the diaphragm 41 to vibrate. The diaphragm 41 It includes a vibration part 411 and a fixing part 412 extending from the edge of the vibration part 411. The fixing part 412 is fixed to the basin frame 1, and the vibration part 411 is fixed to the voice coil 42. Specifically, the basin frame 1 includes a main body 11 and a metal ring 12 installed on the side of the main body 11 close to the diaphragm 41. The metal ring 12 is located between the main body 11 and the diaphragm 41. In this embodiment, the main body 11 The material of is plastic, and the metal ring 12 is a steel ring. Please refer to FIG. 4 together, the fixing portion 412 includes a first connecting portion 4121 connected to the edge of the vibrating portion 411 and a second connecting portion 4122 bent and extended from the first connecting portion 4121 toward the metal ring 12. The metal ring 12 includes Abut against and fix the first fixing surface 121 of the first connecting portion 4121 and the second fixing surface 122 attached and fixed to the second connecting portion 4122, so as to utilize the first fixing surface 121 of the metal ring 12 and the first fixing surface 121 of the diaphragm 41 A connecting portion 4121 is glued and fixed and the second fixing surface 122 of the metal ring 12 is glued and fixed with the second connecting portion 4122 on the diaphragm 41. Specifically, the first fixing surface 121 and the first connecting portion 4121 are glued by glue Gluing and fixing, the second fixing surface 122 and the second fixing portion 122 are also glued and fixed by glue, so that the metal ring 12 can form a stable connection with the fixing portion 412 on the diaphragm 41 and ensure the connection strength of the diaphragm 41.

In the above embodiment, the main body portion 11 includes a supporting portion 111 opposite to the first connecting portion 4121, the supporting portion 111 supports the metal ring 12, the supporting portion 111 is formed with a protrusion 112 extending in the direction of the diaphragm, and the metal ring 12 is sleeved on The outer circumference of the protruding portion 112 enables the metal ring 12 to be stably fixed to the supporting portion 111. The supporting portion 111 extends in the direction of the diaphragm to form a clamping portion 113 spaced apart from the protruding portion 112. A accommodating groove 110 for accommodating and mounting the metal ring 12 is formed between the clamping portion 113 and the protruding portion 112, so that the metal ring 12 It can be stably sandwiched between the clamping portion 113 and the protruding portion 112 to further improve the stability of the metal ring 12 being fixed.

In the above embodiment, the second connecting portion 4122 on the diaphragm 41 is sandwiched between the metal ring 12 and the clamping portion 113, so that the metal ring 12 and the second connecting portion 4122 abut against each other, which is more conducive to ensuring the diaphragm 41 and the metal ring 12 are fixed stability.

In the above embodiment, the main body portion 11 further includes an extension column 114 extending from the end of the support portion 111 away from the diaphragm 41 in a direction away from the metal ring 12, the support portion 111 and the extension column 114 are injection molded into one body; the metal ring 12 is away from the vibration One side of the film 41 extends to form a metal extension piece 123 attached to the outside of the extension column 114. The metal ring 12, the metal extension piece 123 and the main body 11 are injection molded into one body to ensure the bonding effect of the metal ring 12 and the main body 11. In addition, a positioning hole 1230 is formed through the metal extension piece 123, and the extension post 114 correspondingly forms a positioning post 1140 extending into the positioning hole 1230, so that the positioning post 1140 and the positioning hole 1230 form a mating connection to further strengthen the metal ring 12 and the main body The stability of the part 11 connection.

In the above embodiment, the vibrating part 411 includes a dome 4111 and a folding ring 4112 connected between the dome 4111 and the fixed part. The folding ring 4112 is an arc-shaped structure protruding in a direction away from the basin frame 1, and the voice coil 42 and Dome 4111 is connected. In this embodiment, the first connecting portion 4121 on the fixing portion 412 is completely glued to the first fixing surface 121 on the metal ring 12 to use the rigidity of the metal ring 12 to ensure the overall strength, so that it is not necessary to increase the fixing portion The width of the first connecting portion 4121 on the 412 can be glued to meet the strength requirements, so as to increase the width of the folding ring 4112 on the vibrating portion 411 as much as possible to increase the vibration space of the vibrating portion 411 and improve the audio performance of the product. The magnetic circuit system 3 includes a magnetic yoke 31 corresponding to the extension column 114 and a magnetic steel assembly 32 fixed to the magnetic yoke 31. The magnetic steel assembly 32 has a magnetic gap 320. The end of the voice coil 42 away from the vibration part 411 extends into the magnetic gap 320 . Specifically, the magnet assembly 32 includes a main magnet 321 corresponding to the dome 4111, a main pole core 324 stacked on the main magnet 321, a secondary magnet 322 spaced apart from the main magnet 321, and a secondary magnet 322 stacked on the sub The magnetic steel 322 is away from the side of the magnetic yoke 31 and the auxiliary magnetic steel 323 attached to the metal ring 12 further enhances the magnetic field strength and improves the audio performance of the product.

In the above embodiment, the magnetic circuit system 3 also includes the upper clamping plate 325 on the side of the auxiliary magnetic steel 322 away from the yoke 31, and the auxiliary magnetic steel 323 is located on the side of the upper clamping plate 325 away from the voice coil 42. The upper clamping plate 325 and the main body The part 11 is integrally formed to ensure the compactness of the overall structure.

To sum up, the present invention installs the metal ring 12 on the side of the main body 11 of the basin frame 1 close to the diaphragm 41, and uses the first fixing surface 121 on the metal ring 12 and the fixing portion 412 of the diaphragm 41. The first connecting portion 4121 is fixed against each other, and the second fixing surface 122 on the metal ring 12 and the second connecting portion 4122 on the fixing portion 412 of the diaphragm 41 are attached and fixed to each other, so that the fixing portion 412 of the diaphragm 41 can It is stably fixed on the metal ring 12 to use the rigidity of the metal ring 12 to ensure the overall strength, so that the width of the first connecting portion 4121 on the fixing portion 412 can be achieved without increasing the width of the first connecting portion 4121 on the fixing portion 412 to achieve the bonding that meets the strength requirements, thereby achieving In the case of product reliability and overall strength, the vibration space of the vibrating part 411 is increased to improve the audio performance of the product, and can improve the performance of the product such as drop resistance and extrusion resistance.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A loudspeaker, the loudspeaker comprising a basin frame with a storage space, and a magnetic circuit system and a vibration system contained in the basin frame, the vibration system including a diaphragm and a voice coil that drives the diaphragm to vibrate, the The diaphragm includes a vibrating part and a fixing part extending from the edge of the vibrating part, the fixing part is fixed to the basin frame, and the vibrating part is fixed to the voice coil; characterized in that the basin frame includes a main body part And a metal ring installed on the side of the main body part close to the diaphragm, the metal ring is located between the main body part and the diaphragm, and the fixing part includes a first part connected to the edge of the vibration part. A connecting portion and a second connecting portion bent and extended from the first connecting portion toward the metal ring. The metal ring includes a first fixing surface that abuts against and fixes the first connecting portion, and is connected to the first connecting portion. The two connecting parts are attached to the fixed second fixing surface.
The speaker according to claim 1, wherein the main body portion includes a support portion opposite to the first connecting portion, the support portion supports the metal ring, and the support portion faces the diaphragm. A protrusion is formed extending, and the metal ring is sleeved on the outer periphery of the protrusion.
The loudspeaker according to claim 2, wherein the supporting portion extends in the direction of the diaphragm to form a clamping portion spaced apart from the protruding portion, and between the clamping portion and the protruding portion A receiving groove for receiving and installing the metal ring is formed.
The speaker according to claim 3, wherein the second connecting portion is sandwiched between the metal ring and the clamping portion.
The speaker according to claim 1, wherein the first fixing surface is adhesively fixed to the first connecting portion, and the second fixing surface is adhesively fixed to the second fixing portion.
The speaker according to claim 2, wherein the main body portion further comprises an extension column extending from an end of the support portion away from the diaphragm in a direction away from the metal ring, and the metal ring is away from the metal ring. One side of the diaphragm extends to form a metal extension piece attached to the outside of the extension column.
The speaker according to claim 6, wherein the metal ring, the metal extension piece and the main body part are injection molded into one body, the metal extension piece is formed with a positioning hole through it, and the extension post is formed correspondingly A positioning post extending into the positioning hole.
The speaker according to claim 6, wherein the magnetic circuit system comprises a magnetic yoke corresponding to the extension column and a magnetic steel component fixed to the magnetic yoke, the magnetic steel component has a magnetic gap, so The end of the voice coil away from the vibrating part extends into the magnetic gap.
The speaker according to claim 1, wherein the vibrating part comprises a dome and a folding ring connected between the dome and the fixing part, and the folding ring is facing away from the frame An arc structure protruding in the direction, the voice coil is connected with the dome.
The speaker according to claim 8, wherein the magnetic steel assembly comprises a main magnetic steel corresponding to the dome, a secondary magnetic steel arranged spaced apart from the main magnetic steel, and a secondary magnetic steel stacked on the secondary magnetic steel. The steel is away from the side of the yoke and is attached to the auxiliary magnetic steel of the metal ring.
The loudspeaker according to claim 10, wherein the magnetic circuit system further includes an upper splint on the side of the auxiliary magnetic steel away from the yoke, and the auxiliary magnetic steel is located far away from the upper splint. On one side of the voice coil, the upper clamping plate and the main body part are integrally formed.
The speaker according to claim 1, wherein the material of the main body is plastic, and the metal ring is a steel ring.