CN210431867U

CN210431867U - Loudspeaker

Info

Publication number: CN210431867U
Application number: CN201921611518.3U
Authority: CN
Inventors: 鲍宝红; 庞泽俊
Original assignee: Qingdao Goertek Technology Co Ltd
Current assignee: Qingdao Goertek Technology Co Ltd; Goertek Intelligent Technology Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-04-28
Anticipated expiration: 2029-09-25

Abstract

The utility model belongs to the technical field of audio equipment, in particular to a loudspeaker, which comprises a magnetic circuit system, a basin frame fixed with the magnetic circuit system, and a vibration system, wherein the vibration system comprises a paper basin fixedly connected with the basin frame, and a voice coil assembly connected on the paper basin and inserted into a magnetic gap of the magnetic circuit system, a first elastic wave is arranged between the voice coil assembly and the basin frame, and a second elastic wave is arranged between an end part of the voice coil assembly inserted into the magnetic gap and the magnetic circuit system; first bullet ripples can strengthen the control to voice coil loudspeaker voice coil subassembly upper portion, the second plays the ripples and can strengthen the control to voice coil loudspeaker voice coil subassembly lower part, makes the voice coil loudspeaker voice coil subassembly homoenergetic receive fine linear control when carrying out upwards, decurrent axial motion, has reduced the probability that voice coil loudspeaker voice coil subassembly lower part sways about, can avoid appearing wiping phenomenons such as circle in addition, has solved the problem that non-linear distortion appears easily and appears the abnormal sound because of wiping the circle when current speaker sound production.

Description

Loudspeaker

Technical Field

The utility model belongs to the technical field of audio equipment, especially, relate to a loudspeaker.

Background

The loudspeaker is a common electroacoustic transducer for converting an electric signal into a sound signal, and when the loudspeaker works, the voice coil can vibrate in the axial direction under the action of ampere force to drive the cone to vibrate so as to produce sound. When the voice coil is located at a resonance frequency point, the magnetic gap can jump out of the voice coil, so that the loudspeaker is greatly distorted at a low-frequency end, and therefore, in order to improve the tone quality effect of the loudspeaker, elastic waves are installed between the voice coil and the basin frame, and the control of the vibration of the voice coil in the axial direction is enhanced. Moreover, due to the symmetry problem of the suspension system of the loudspeaker, when the voice coil moves upwards and downwards, the suspension system is easy to move asymmetrically, and abnormal sound is caused by the phenomena of ring wiping and the like.

After the voice coil is arranged, good control force is exerted on upward movement of the voice coil, when the voice coil moves downward, the control effect on the lower portion of the voice coil is obviously reduced, the symmetry of the whole vibration system of the loudspeaker is still unsatisfactory, the vertical displacement of the voice coil is inconsistent, nonlinear distortion is easy to generate, and abnormal sound is caused by the phenomena of ring wiping and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a loudspeaker aims at solving the problem that non-linear distortion appears easily and appears the abnormal sound because of wiping the circle when current loudspeaker sound production.

The utility model discloses a loudspeaker, loudspeaker include magnetic circuit, with magnetic circuit fixes basin frame and vibration system together, vibration system include with basin frame fixed connection's cone and connection are in on the cone and insert voice coil loudspeaker voice coil subassembly in magnetic circuit's the magnetic gap voice coil loudspeaker voice coil subassembly with be equipped with first bullet ripples between the basin frame the tip that the voice coil loudspeaker voice coil subassembly inserted in the magnetic gap with be equipped with the second bullet ripples between the magnetic circuit.

As an improvement, the magnetic circuit system comprises a T iron, a magnet sleeved on a column part of the T iron and fixedly connected with a seat part of the T iron, and washers fixed on the magnet, wherein a magnetic gap is formed between the magnet and the column part of the T iron; the second damper is disposed between the magnet and the voice coil assembly.

As an improvement, the magnet comprises an auxiliary magnet fixed on the seat of the T-iron and a main magnet fixed on the auxiliary magnet, the washer is fixed on the main magnet, and the diameter of the inner ring side of the main magnet is not equal to the diameter of the inner ring side of the auxiliary magnet; the outer periphery of the second elastic wave is arranged at the adjacent position of the main magnet and the auxiliary magnet, and the inner ring side of the second elastic wave is fixedly connected with the voice coil assembly.

As an improvement, the second elastic wave comprises a corrugated part and an adhesive part annularly arranged on the peripheral side of the corrugated part; when the inner diameter of the axial hole of the main magnet is smaller than that of the axial hole of the auxiliary magnet, the bonding part is fixed on the main magnet, and a space is reserved between the outer peripheral side of the corrugated part and the inner side wall of the axial hole of the main magnet; when the inner diameter of the axial hole of the main magnet is larger than that of the axial hole of the auxiliary magnet, the bonding part is fixed on the auxiliary magnet, and a space is reserved between the outer peripheral side of the corrugated part and the inner wall of the axial hole of the auxiliary magnet.

As an improvement, a gasket is fixed on the seat part of the T iron, a mounting groove is arranged on the side surface of the gasket, the seat part of the T iron is clamped into the mounting groove and fixedly connected with the mounting groove, and the column part of the T iron penetrates through the gasket.

As an improvement, the magnetic circuit system comprises a U-shaped iron, a magnet fixed on a bottom plate of the U-shaped iron, and washers fixed on the magnet, wherein a magnetic gap is formed between the magnet and a side wall of the U-shaped iron; the second damper is disposed between the side wall of the U-bar and the voice coil assembly.

As an improvement, a step is arranged on the side wall of the U-shaped iron, the outer peripheral side of the second damper is mounted on the step, and the inner ring side of the second damper is fixedly connected with the voice coil assembly.

As an improvement, a first distance between the first elastic wave and the washer is determined by a second distance between the second elastic wave and the washer.

As an improvement, the voice coil assembly comprises a voice coil pipe fixedly connected to the cone and a coil wound on the voice coil pipe and far away from one end of the cone, the first elastic wave is connected between the cone frame and the coil and between the voice coil pipe portions between the cones, and the inner ring side of the second elastic wave is connected to one end, far away from the cone, of the voice coil pipe.

As an improvement, the vibration system further comprises a dust cap fixedly connected to the cone and covering the voice coil tube portion.

Since the technical scheme is used, the utility model discloses a speaker includes magnetic circuit, the basin frame together fixed with magnetic circuit and vibration system, this vibration system include with basin frame fixed connection's cone and connect on the cone and insert the voice coil loudspeaker voice coil subassembly in magnetic circuit's the magnetic gap, be equipped with first bullet ripples between voice coil loudspeaker voice coil subassembly and basin frame, be equipped with the second between the tip that the voice coil loudspeaker voice coil subassembly inserted in the magnetic gap and magnetic circuit. Add the second between tip and the magnetic circuit in the magnetic gap is inserted to the voice coil loudspeaker voice coil subassembly, the voice coil loudspeaker voice coil subassembly is when carrying out axial motion, first bullet ripples can strengthen the control to voice coil loudspeaker voice coil subassembly upper portion, the second plays the ripples and can strengthen the control to voice coil loudspeaker voice coil subassembly lower part, make the voice coil loudspeaker voice coil subassembly upwards, the homoenergetic receives fine linear control during decurrent axial motion, the probability of swaing about the voice coil loudspeaker voice coil subassembly lower part has been reduced, nonlinear distortion has been improved, the reliable performance of work has been improved, and can avoid appearing wiping phenomenons such as circle, abnormal sound can not appear, the utility model discloses a problem that nonlinear distortion appears easily when the speaker sound production now and abnormal sound appears because of wiping the circle.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a speaker according to the present invention;

10, a magnetic circuit system, 11, T iron, 12, an auxiliary magnet, 13, main magnet, 14, washer, 15, a gasket, 20, a basin frame, 30, a vibration system, 31, a paper basin, 32, a voice coil tube, 33, a coil, 34, a dust cap, 40, a first elastic wave, 50 and a second elastic wave.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

First embodiment

Fig. 1 shows a schematic cross-sectional structure diagram of the speaker of the present invention, and for convenience of description, only the relevant parts of the speaker are shown in the diagram.

As shown in fig. 1, the speaker includes a magnetic circuit system 10, a frame 20 fixed with the magnetic circuit system 10, and a vibration system 30, where the vibration system 30 includes a cone 31 fixedly connected with the frame 20, and a voice coil assembly connected to the cone 31 and inserted into a magnetic gap of the magnetic circuit system 10, a first damper 40 is disposed between the voice coil assembly and the frame 20, and a second damper 50 is disposed between an end of the voice coil assembly inserted into the magnetic gap and the magnetic circuit system 10.

Add second bullet ripples 50 between tip and magnetic circuit 10 in the voice coil loudspeaker voice coil subassembly inserts the magnetic gap, the voice coil loudspeaker voice coil subassembly is when carrying out axial motion, first bullet ripples 40 can strengthen the control to voice coil loudspeaker voice coil subassembly upper portion, second bullet ripples 50 can strengthen the control to the voice coil loudspeaker voice coil subassembly lower part, make the voice coil loudspeaker voice coil subassembly upwards, all can receive fine linear control when decurrent axial motion, the probability of swaing about the voice coil loudspeaker voice coil subassembly lower part has been reduced, nonlinear distortion has been improved, the reliable performance of work has been improved, and can avoid appearing wiping phenomenons such as circle, the abnormal sound can not appear, the utility model discloses a problem that nonlinear distortion appears easily when having solved current speaker sound production and the abnormal sound appears because of wiping the circle.

For a conventional ultra-low voice loudspeaker, because the coil of the voice coil assembly is overlarge, the instability of the lower part of the voice coil assembly during working is considered, and in order to improve the production yield, the size of a magnetic gap is increased, so that the tone quality of the loudspeaker is sacrificed; adopt the utility model discloses a structure of speaker can control the axial motion of voice coil loudspeaker voice coil subassembly lower part through the enhancement of second bullet ripples 50, just no longer need strengthen the magnetic gap, can suitably reduce magnetic circuit 10, can improve the tone quality of speaker, has not only improved the production yield, also is favorable to improving sound radiation efficiency, can reduce the thickness of whole speaker moreover.

In this embodiment, the magnetic circuit system 10 includes a T-iron 11, a magnet sleeved on the column portion of the T-iron 11 and fixedly connected to the seat portion of the T-iron 11, and a washer 14 fixed on the magnet, wherein a magnetic gap is formed between the magnet and the column portion of the T-iron 11; the second damper 50 is disposed between the magnet and the voice coil assembly.

Specifically, the magnet comprises an auxiliary magnet 12 fixed on the seat of the T-shaped iron 11 and a main magnet 13 fixed on the auxiliary magnet 12, wherein a washer 14 is fixed on the main magnet 13, and the diameter of the inner ring side of the main magnet 13 is not equal to that of the inner ring side of the auxiliary magnet 12; the outer circumference of the second damper 50 is disposed at the adjacent position of the main magnet 13 and the auxiliary magnet 12, the inner circumference of the second damper 50 is fixedly connected with the voice coil assembly, if the diameter of the inner circumference of the main magnet 13 is smaller than that of the inner circumference of the auxiliary magnet 12, the outer circumference of the second damper 50 is fixed on the main magnet 13, and if the diameter of the inner circumference of the main magnet 13 is larger than that of the auxiliary magnet 12, the outer circumference of the second damper 50 is fixed on the auxiliary magnet 12.

The second elastic wave 50 includes a corrugated portion, and an adhesive portion annularly provided on the peripheral side of the corrugated portion; when the inner diameter of the axial hole of the main magnet 13 is smaller than that of the axial hole of the auxiliary magnet 12, the bonding part is fixed on the side surface of the main magnet 13, and a space is reserved between the outer peripheral side of the corrugated part and the inner side wall of the axial hole of the main magnet 13; when the inner diameter of the axial hole of the main magnet 13 is larger than the inner diameter of the axial hole of the auxiliary magnet 12, the bonding portion is fixed on the side surface of the auxiliary magnet 12, and a gap is left between the outer peripheral side of the corrugated portion and the inner wall of the axial hole of the auxiliary magnet 12, generally, the gap is 2mm to 3mm, so that the second damper 50 can be prevented from touching the main magnet 13 or the auxiliary magnet 12, and the generation of abnormal sound can be avoided.

In order to position the T iron 11 and mount the magnet conveniently, a gasket 15 is fixed on the seat of the T iron 11, and the T iron also has a magnetic conduction function, specifically, a mounting groove is arranged on the side surface of the gasket 15, the seat of the T iron 11 is clamped in the mounting groove and fixedly connected with the mounting groove, and the column part of the T iron 11 penetrates through the gasket 15.

In the present embodiment, the voice coil assembly includes a voice coil tube 32 fixedly attached to the cone 31, and a coil 33 wound around an end portion of the voice coil tube 32 remote from the cone 31, the first damper 40 is attached between the frame 20, the portion of the voice coil tube 32 between the coil 33 and the cone 31, and the inner-ring side of the second damper 50 is attached to an end portion of the voice coil tube 32 remote from the cone 31.

The vibration system 30 further includes a dust cap 34 fixedly attached to the cone 31 and covering the end of the voice coil tube 32, which can prevent dust and has an effect of improving high-frequency performance.

In this embodiment, a first distance between the first damper 40 and the washer 14 is equal to a second distance between the second damper 50 and the washer 14, the first distance is a distance between the first damper 40 and the washer 14 in the axial movement direction, and the second distance is a distance between the second damper 50 and the washer 14 in the axial movement direction, so that control of axial movement of the voice coil assembly can be further enhanced.

Second embodiment

This embodiment is substantially the same as the first embodiment, except that:

the magnetic circuit system 10 may also be configured as the following form, including a U-shaped iron, a magnet fixed on a bottom plate of the U-shaped iron, and a washer fixed on the magnet, wherein a magnetic gap is formed between the magnet and a side wall of the U-shaped iron; the second damper 50 is arranged between the side wall of the U-shaped iron and the voice coil assembly; the magnet generally comprises an auxiliary magnet fixed on a bottom plate of the U-shaped iron, and a main magnet fixed on the auxiliary magnet, wherein the washer is fixed on the main magnet.

In this embodiment, in order to facilitate the second damper 50 to be fixedly connected with the U-iron, a step is provided on the sidewall of the U-iron, the outer peripheral side of the second damper 50 is mounted on the step, the inner ring side of the second damper 50 is fixedly connected with the voice coil assembly, specifically, the voice coil tube of the voice coil assembly is fixedly connected with one end of the voice coil tube far away from the cone 31.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The loudspeaker is characterized by comprising a magnetic circuit system, a cone frame and a vibration system, wherein the cone frame is fixed with the magnetic circuit system, the vibration system comprises a cone fixedly connected with the cone frame and a voice coil assembly connected to the cone and inserted into a magnetic gap of the magnetic circuit system, a first elastic wave is arranged between the voice coil assembly and the cone frame, and a second elastic wave is arranged between the end part of the voice coil assembly inserted into the magnetic gap and the magnetic circuit system.

2. The loudspeaker of claim 1, wherein the magnetic circuit system comprises a T-iron, a magnet sleeved on the pillar of the T-iron and fixedly connected with the seat of the T-iron, and a washer fixed on the magnet, and a magnetic gap is formed between the magnet and the pillar of the T-iron; the second damper is disposed between the magnet and the voice coil assembly.

3. The loudspeaker of claim 2, wherein said magnets comprise an auxiliary magnet fixed on the seat of said T-bar, a main magnet fixed on said auxiliary magnet, said washer being fixed on said main magnet, the diameter of the inner side of said main magnet being unequal to the diameter of the inner side of said auxiliary magnet; the outer periphery of the second elastic wave is arranged at the adjacent position of the main magnet and the auxiliary magnet, and the inner ring side of the second elastic wave is fixedly connected with the voice coil assembly.

4. The loudspeaker of claim 3, wherein the second damper includes a bellows, an adhesive portion disposed circumferentially around the bellows; when the inner diameter of the axial hole of the main magnet is smaller than that of the axial hole of the auxiliary magnet, the bonding part is fixed on the main magnet, and a space is reserved between the outer peripheral side of the corrugated part and the inner side wall of the axial hole of the main magnet; when the inner diameter of the axial hole of the main magnet is larger than that of the axial hole of the auxiliary magnet, the bonding part is fixed on the auxiliary magnet, and a space is reserved between the outer peripheral side of the corrugated part and the inner wall of the axial hole of the auxiliary magnet.

5. The loudspeaker of claim 3, wherein a spacer is fixed to the seat of the T-iron, a mounting groove is provided on a side surface of the spacer, the seat of the T-iron is clamped into and fixedly connected with the mounting groove, and the post of the T-iron passes through the spacer.

6. The loudspeaker of claim 1, wherein the magnetic circuit system comprises a U-shaped iron, a magnet fixed on a bottom plate of the U-shaped iron, and a washer fixed on the magnet, and a magnetic gap is formed between the magnet and a side wall of the U-shaped iron; the second damper is disposed between the side wall of the U-bar and the voice coil assembly.

7. The loudspeaker of claim 6, wherein a step is provided on the side wall of the U-iron, the outer circumference side of the second damper is mounted on the step, and the inner circumference side of the second damper is fixedly connected to the voice coil assembly.

8. The loudspeaker of claim 2 or 6, wherein a first spacing between the first damper and the washer is equal to a second spacing between the second damper and the washer.

9. The loudspeaker of claim 1, wherein the voice coil assembly comprises a voice coil tube fixedly attached to the cone and a coil wound around an end of the voice coil tube remote from the cone, the first damper is attached between the frame, the voice coil and a portion of the voice coil tube between the cone and the cone, and the inner race side of the second damper is attached to an end of the voice coil tube remote from the cone.

10. The loudspeaker of claim 9 wherein said vibration system further comprises a dust cap fixedly attached to said cone and covering over said voice coil tube portion.