CN213280079U

CN213280079U - Anti-vibration loudspeaker

Info

Publication number: CN213280079U
Application number: CN202021322138.0U
Authority: CN
Inventors: 洪耀廷; 邓鸿斌; 徐超; 林三弟; 郑佳祥
Original assignee: Xiamen Tuness Electronic Co ltd
Current assignee: Xiamen Tuness Electronic Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-05-25
Anticipated expiration: 2030-07-08

Abstract

The utility model provides an anti vibration speaker, include: magnetic circuit, vibration system and bed frame, magnetic circuit includes central magnet and limit magnet, vibration system includes voice coil loudspeaker voice coil and vibrating diaphragm, vibration system still includes: a welding member fixed on the base frame and having conductivity; and the elastic piece is connected to the corner of the voice coil at intervals and has conductivity. The elastic member includes: the first connecting plate is vertically and fixedly connected to the outer side face of the voice coil; the first welding plate is connected to one end, far away from the voice coil, of the first connecting plate; the elastic supporting arm is connected to one side, close to the first welding plate, of the first connecting plate; the second connecting plate is connected to one end, far away from the first connecting plate, of the elastic supporting arm; the second connecting plate is fixed on the base frame in an injection molding mode, and the surface of the second connecting plate abuts against the weldment.

Description

Anti-vibration loudspeaker

Technical Field

The utility model relates to a speaker field, more specifically the says so, relates to a vibration resistant speaker.

Background

The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and the quality of the loudspeaker has great influence on the sound quality. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect. Loudspeakers are of a wide variety and vary widely in price. The audio frequency electric energy makes the vibrating diaphragm vibrate and generate resonance (resonance) with the surrounding air to make sound through electromagnetic, piezoelectric or electrostatic effect.

At present, the existing loudspeaker can generate a polarization phenomenon under the working state of high power, and a linear elastic piece arranged in the loudspeaker is easily brittle-broken in the polarization process, so that the performance and the using effect of the loudspeaker are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vibration resistant speaker can effectively solve above-mentioned problem.

The utility model discloses a realize like this:

an anti-vibration speaker, comprising: magnetic circuit, vibration system and bed frame, magnetic circuit includes central magnet and limit magnet, vibration system includes voice coil loudspeaker voice coil and vibrating diaphragm, vibration system still includes:

a welding member fixed on the base frame and having conductivity;

a spring member attached to a corner of the voice coil at a distance and having conductivity, the spring member comprising:

the first connecting plate is vertically and fixedly connected to the outer side face of the voice coil, and one side line of the first connecting plate is matched with the outer side face of the voice coil;

the first welding plate is connected to one end, far away from the voice coil, of the first connecting plate;

the elastic supporting arm is connected to one side, close to the first welding plate, of the first connecting plate;

and the second connecting plate is connected to one end, far away from the first connecting plate, of the elastic supporting arm and is fixed on the base frame.

As a further improvement, the weldment includes:

the second welding plate is arranged on the upper surface of the base frame, a positioning hole is formed in the second welding plate, and a positioning part matched with the positioning hole is arranged on the base frame;

and one end of the third connecting plate, which is far away from the second welding plate, is abutted against the second connecting plate.

As a further improvement, the resilient support arms are transversely serpentine-shaped.

As a further improvement, the distance between the connecting point of the first connecting plate and the elastic supporting arm and the first welding plate is at least 0.35 mm.

The utility model has the advantages that:

1. the elastic piece and the base frame are integrally molded by injection, so that the assembly steps are simplified, and the structural stability of the loudspeaker is improved;

2. the elastic piece comprises an elastic supporting arm in a transverse winding shape, and the elastic supporting arm fully utilizes the space between the edge magnets and also improves the vibration resistance of the loudspeaker;

3. the matching use of the elastic piece and the welding piece replaces the traditional epitaxial voice coil lead as a connecting piece for conducting a circuit, so that the external connection distance of the voice coil lead is shortened, the positioning precision of the voice coil is higher, and the integral strength of the loudspeaker is improved;

4. the distance between the connection point of the first connection plate and the elastic support arm and the first welding plate is controlled, so that the influence of vibration on the elastic support arm on the first welding plate is minimized, the phenomenon of brittle failure of the elastic support arm caused by resonance in a working state is avoided, and a voice coil lead welded on the first welding plate cannot fall off due to vibration of the elastic support arm;

5. the elastic part is attached to the middle part of the outer side surface of the voice coil through the flanging, compared with the traditional mode that the flexible circuit boards are bonded to the upper surface and the lower surface of the voice coil, the utility model reduces the overall height of the loudspeaker, and the flanging is bonded to the middle position of the outer side surface of the voice coil, so that the centers of gravity of the elastic part and the voice coil are positioned on the same horizontal plane, the anti-vibration performance of the loudspeaker is improved, and the phenomenon that the voice coil rubs the noise of the voice coil due to the polarization or assembly error of a vibration;

6. the elastic part is made of phosphor bronze, and compared with the elastic part made of stainless steel, the low-frequency response of the utility model is better, and the sound is more mellow and full under the condition of meeting the space of the sound cavity; just the utility model discloses an intensity is higher, and life is longer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of the overall structure of a speaker according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a speaker part provided by an embodiment of the present invention.

Fig. 3 is a schematic structural view of an elastic member with a flange according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of an elastic member without a flange according to an embodiment of the present invention.

Fig. 5 is a plan view of the elastic member according to the embodiment of the present invention.

In the figure:

1. magnetic circuit system 2, vibration system 21, voice coil 22, vibrating diaphragm 23 and weldment

231. Second welding plate 2311, positioning hole 232, third connecting plate 24 and elastic piece

241. First connecting plate 242, first welding plate 243, elastic supporting arm

244. Second connecting plate 245, flanging 3, base frame 31 and positioning part

A: distance between the connecting point of the first connecting plate and the elastic supporting arm and the first welding plate

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example one

Referring to fig. 1, an anti-vibration speaker includes: magnetic circuit 1, vibration system 2 and bed frame 3, magnetic circuit 1 includes central magnet and limit magnet, vibration system 2 includes voice coil 21 and vibrating diaphragm 22, vibration system 2 still includes: a welding member 23 fixed to the base frame 3 and having conductivity; and an elastic member 24 having conductivity and connected to the corner of the voice coil 21 at a spacing. The elastic member 24 includes: a first connecting plate 241 vertically fixed to an outer side surface of the voice coil 21; a flange 245 vertically connected to the first connecting plate 241 and attached to the outer side of the voice coil 21; a first welding plate 242 connected to an end of the first connection plate 241 remote from the voice coil 21; an elastic support arm 243 connected to a side of the first connection plate 241 adjacent to the first welding plate 242; a second connecting plate 244 connected to an end of the elastic supporting arm 243 away from the first connecting plate 241; the second connecting plate 244 is fixed on the base frame 3 by injection molding, and a surface of the second connecting plate 244 abuts against the weldment 23. Turn-ups 245 passes through the glue bonding on voice coil loudspeaker voice coil 21 lateral surface, and the traditional mode of surface bonding flexible circuit board about voice coil loudspeaker voice coil 21 of relative ratio, the utility model discloses reduced the whole height of speaker, and turn-ups 245 bonds in the lateral surface middle part position of voice coil loudspeaker voice coil 21 for the focus of elastic component 24 and voice coil loudspeaker voice coil 21 is located same horizontal plane, has promoted the anti vibration performance of speaker, has avoided 2 polarization of vibration system or equipment error to cause the phenomenon of the noise that voice coil loudspeaker voice coil 21 wiped the circle to take place. The adoption is moulded plastics elastic component 24 and bed frame 3 and is become an organic whole, and one surface of elastic component 24 exposes and is used for electrically conducting with weldment 23 looks butt in the air, and consequently weldment 23 and elastic component 24's combination have replaced the connected mode of traditional voice coil 21 lead wire, have shortened the external distance of voice coil 21 lead wire for voice coil 21's positioning accuracy is higher, and the anti-vibration effect is better, has promoted the bulk strength of speaker.

Referring to fig. 2, the weldment 23 comprises: a second welding plate 231 disposed on the upper surface of the base frame 3, and having a positioning hole 2311 disposed thereon, wherein the base frame 3 is provided with a positioning portion 31 engaged with the positioning hole 2311; a third connecting plate 232 perpendicularly connected to the second welding plate 231, and an end of the third connecting plate remote from the second welding plate 231 abuts against the second connecting plate 244. The soldering member 23 is matched with the positioning portion 31 through the positioning hole 2311, glued on the base frame 3 by glue, and the soldering member 23 abuts against the elastic member 24, and the second soldering plate 231 is used as an external circuit connection point because the soldering member 23 and the elastic member 24 have conductivity.

Referring to fig. 3, the elastic support arm 243 has a transversely meandering shape, thereby making full use of the space between the edge magnets and improving the stability of the vibration system 2.

Referring to fig. 5, the distance a between the connection point of the first connection plate 241 and the elastic support arm 243 and the first welding plate 242 is at least 0.35 mm. When the elastic support arm 243 vibrates, the vibration amplitude of the connection point position of the elastic support arm 243 and the first connection plate 241 is the largest, and the lead of the voice coil 21 is welded on the first welding plate 242, therefore, in a narrow space of the loudspeaker, the connection point of the elastic support arm 243 and the first connection plate 241 should be far away from the first welding plate 242 as far as possible, so that the influence of the elastic support arm 243 caused by vibration on the first welding plate 242 is reduced to the minimum, the occurrence of the brittle fracture phenomenon of the elastic support arm 243 due to resonance in the working state is avoided, and the lead of the voice coil 21 welded on the first welding plate 242 cannot fall off due to the vibration of the elastic support arm 243.

A method of assembling an anti-vibration speaker, comprising the steps of:

s1, the elastic piece 24 with the connecting material and the base frame 3 are molded into a whole by injection;

s2, cutting off the connecting material, installing the voice coil 21 into the base frame 3, and bonding the voice coil 21 with the elastic piece 24;

s3, soldering the lead of the voice coil 21 to the first soldering board 242, applying glue to the middle surface of the diaphragm 22, applying glue to the base frame 3, bonding the diaphragm 22 to the base frame 3, and installing the magnetic circuit system 1 into the base frame 3 to complete the assembly of the speaker.

The elastic member 24 is made of one of titanium, beryllium copper, SUS304L, SUS316L, and phosphor bronze, and in this embodiment, the elastic member 24 is made of phosphor bronze. Carry out finite element analysis to the elastic component 24 that the material is stainless steel respectively, carry out finite element analysis to the elastic component 24 that the material is phosphor bronze, can learn that the material is lower for the minimum resonant frequency F0 of elastic component 24 of phosphor bronze, show the utility model discloses better to the response of low frequency, under the condition that satisfies the sound cavity space, sound is more mellow and full. Just the utility model discloses a difference of second order mode and third order mode is greater than the elastic component 24 that the material is stainless steel, consequently, the utility model discloses it is little to produce resonant risk. The maximum stress of phosphor bronze is less than the maximum stress of stainless steel, which illustrates that the utility model has higher strength and longer service life.

Example two

Referring to fig. 4, the present embodiment is different from the first embodiment in that the elastic member 24 of the present embodiment does not have the flange 245, and one of the boundaries of the first connecting plate 241 is attached to the outer side surface of the voice coil 21, that is, the first connecting plate 241 is fixed to the outer side surface of the voice coil 21 by gluing.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-vibration speaker, comprising: magnetic circuit, vibration system and bed frame, magnetic circuit includes central magnet and limit magnet, vibration system includes voice coil loudspeaker voice coil and vibrating diaphragm, its characterized in that, vibration system still includes:

a welding member fixed on the base frame and having conductivity;

2. An anti-vibration speaker as in claim 1, wherein said weldment comprises:

3. An anti-vibration loudspeaker as in claim 1, wherein said resilient support arm is transversely serpentine.

4. An anti-vibration loudspeaker as in claim 1, wherein the connection point of said first connection plate and said resilient support arm is spaced from said first weld plate by at least 0.35 mm.