WO2011066702A1

WO2011066702A1 - Audio driver

Info

Publication number: WO2011066702A1
Application number: PCT/CN2010/000042
Authority: WO
Inventors: 朱多亮
Original assignee: Zhu Duoliang
Priority date: 2009-12-03
Filing date: 2010-01-11
Publication date: 2011-06-09
Also published as: CN201708913U

Abstract

An audio driver is provided, including: a main body, a magnetic motivity generating device, a voice coil, an elastic shifting piece, a vibration transmitting body, and a buffer pad; a concave platform is set on the main body; the magnetic motivity generating device is located on the bottom of the concave platform, and the magnetic motivity generating device is composed of a first alnico, a pole plate and a second alnico which are overlapped basipetally; the voice coil is set in the gap between the magnetic motivity generating device and the main body; the elastic shifting piece covers on a platform of the main body, and the periphery of the elastic shifting piece is connected fixedly with the main body; the vibration transmitting body is set on the upside of the elastic shifting piece, the bottom of the vibration transmitting body is an annular concave edge, and the annular concave edge is adhibited with the elastic shifting piece and the inner wall of the voice coil embeddedly; the buffer pad is adhibited on the upside of the vibration transmitting body. The structure of the audio driver is more compact, and makes for increasing the efficiency of audio vibration.

Description

An audio driver

TECHNICAL FIELD The present invention relates to the field of electronic devices, and in particular, to an audio driver. Background technique

The existing resonant audio driver has a complicated structure, many processes, high cost, unstable sound quality, and can hardly be reflected in the bass portion, and has short lifespan and difficulty in popularization.

The structure of an audio driver of the prior art mainly comprises an upper cover and a base with an internal table, the base and the alternately stacked lower magnet, the soft iron, the upper magnet and the magnetic balance piece form a magnetic energy device, and are fixed at the bottom of the concave table. a voice coil is installed in the gap between the base and the magnetic energy collecting device, and a coil of the voice coil is connected to the external circuit through the lead hole opened in the base, and the other end of the voice coil is fixed on the bottom surface of the vibration transmitter, and the vibration transmitter is The dome-shaped shrapnel, the round dome-shaped shock-collecting top cap and the seismic diaphragm are formed. The shock-absorbing cap is fixedly connected to the butterfly-shaped shrapnel, the earthquake is tightly connected to the top of the shock-collecting cap, and the butterfly-shaped shrapnel is made of stainless steel with a large elastic modulus. Or made of FRP composite material, the whole seismic transmission device is fixed on the upper part of the base. The top wire can be installed by thread connection on the butterfly elastic piece. The vibration amplitude of the butterfly elastic piece can be changed by adjusting the tightness of the top wire to control the high and low frequency vibration amplitude to control the high and low frequency. Vibration output intensity, in order to make the surface of the vibration plate and the attachment better fit, the upper surface of the vibration plate is covered with a rubber gasket to increase the tightness of the fit. During operation, the voice coil generates vibration after being energized in the strong magnetic field generated by the magnetic energy collecting device, and the vibration is transmitted through the vibration transmitter to make the attachment body closely attached to the seismic sheet vibrate. The inventors of the present invention found that the prior art audio driver has the following drawbacks when conducting the research of the present invention:

1. In order to prevent dust from entering and accumulating inside the audio driver, the audio driver is used for a period of time, and the acoustic effect is deteriorated and the life is short. The prior art requires the upper cover 1 to be designed above the base 3, which complicates the structure and complicates the assembly.

2, using the existing technology structure, its structure is complex, its vibration effect is not good, there is a better audio range Narrow, high distortion, and inefficient problems. ' Invention content

A first object of the present invention is to provide an audio driver of a novel structure, which is simpler and more compact in structure, and is advantageous for improving audio vibration efficiency.

An audio driver provided by the present invention includes: a body, a magnetism generating device, a voice coil, a plucking, a vibration absorbing body, and a cushion;

a concave platform is formed on the body, the magnetic generating device is located at a bottom of the concave table, and the magnetic generating device is composed of a first magnetic steel, a plate and a second plate stacked from top to bottom. Composition

The voice coil is disposed in a gap between the magnetism generating device and the body, the plucking is disposed on a platform of the body, and a periphery of the plucking is fixedly connected to the body;

The vibration absorbing body is disposed above the plucking, the bottom of the vibration absorbing body is an annular concave edge, and the annular concave edge is embeddedly adhered to the plucking and the inner wall of the voice coil; Above the vibration absorbing body.

Optionally, the plucking is composed of an outer ring, an inner ring, and a cantilever connected between the inner ring and the outer ring;

The periphery of the plucking is fixedly connected to the body, and specifically: the plucking outer ring is connected to the body.

Optionally, each of the cantilever arms is distributed between the inner ring and the outer ring in a rotating shape.

Optionally, the plucking is made of a highly elastic metal material.

Optionally, the bottom surface of the cushion is a table recessed toward the top, and the bottom edge of the concave table protrudes horizontally outward;

The cushion is adhered to the vibrating body, specifically,

a recessed cover of the cushion cover is disposed on the vibration absorbing body to make an inner edge of the concave surface of the cushion pad The outer edge of the vibration transmitting body is in contact.

Optionally, a magnetizing device is placed in the recess of the body: .

a bump strip is disposed at a horizontally opposite position of the plate

An upper concave strip is disposed at a horizontally opposite position of the first magnetic steel.

Optionally, the first magnetic steel and the second magnetic steel are symmetrically distributed on both sides of the plate.

Optionally, the first magnetic steel and the second magnetic steel have different sizes and specifications.

Optionally, one end of the voice coil to which the acoustic coil is connected is disposed at a gap between the plate and the body.

Optionally, the cushion is made of a gel.

It can be seen that, according to the technical solution of the embodiment of the present invention, since the plucking covers the concave platform on the top of the body, and the periphery of the plucking is fixedly connected with the body, the plucking and over-expanding state is covered on the body, so that the space between the plucking and the body is Good sealing performance is beneficial to improve the sealing performance of the vibration cavity, reduce vibration loss and reduce distortion, which is beneficial to widening the vibration audio range of the audio driver, and is beneficial to ensure the realization of the bass part audio.

Further, the bottom portion of the vibration-transmitting body of the present embodiment is an annular concave edge, and the annular concave edge is embeddedly bonded to the inner wall of the plucking and the voice coil. Due to the compression and outward elastic force of the vibrating body itself, the plucking plucking and the voice coils are tightly clamped together, which is advantageous for maintaining the compactness of the vibrating cavity, and the voice coil is better driven to pluck, Vibrate the vibration body to reduce vibration loss.

In addition, with respect to the audio driver structure shown in the prior art, the structure of the embodiment is applied, and only the parts need to be buckled during assembly, and finally, when the plucking is installed, the periphery of the plucking is fixed on the body by using a screw. Yes, the operation process of multiple screws is not required, the production process is simpler, the structure is more compact, and the compactness can be achieved, the vibration transmission is flexible and simple, the transmission loss is small, the efficiency is high, and the frequency response is sensitive. Wide range and low distortion.

DRAWINGS 1 is a cross-sectional structural view of an audio driver according to Embodiment 1 of the present invention; FIG. 2 is a cross-sectional structural view of a body 201 of the audio driver shown in FIG. 1 according to Embodiment 1 of the present invention;

3 is a cross-sectional view showing a structure of a hammer 202 in the audio driver shown in FIG. 1 according to Embodiment 1 of the present invention;

4 is a cross-sectional view showing the plucking 203 of the audio driver shown in FIG. 1 according to Embodiment 1 of the present invention;

5 is a cross-sectional structural view of a vibration-transmitting body 204 in the audio driver shown in FIG. 1 according to Embodiment 1 of the present invention;

6 is a cross-sectional structural view of a cushion 205 in the audio driver of FIG. 1 according to Embodiment 1 of the present invention;

7 is a cross-sectional structural diagram of a magnetic motion generating device in the audio driver shown in FIG. 1 according to Embodiment 1 of the present invention;

Figure 8 is a front view showing the structure of the pluck 203 in the audio driver of Figure 1 in the first embodiment of the present invention.

detailed description

The invention is illustrated by the following detailed description of the embodiments of the invention. Example 1:

Referring to FIG. 1, the audio driver mainly includes the following: a body 201 (structure shown in FIG. 2), a magnetism generating device (see FIG. 7), a voice coil 202 (shown in FIG. 3), and a plucking 203 (see Figures 4 and 8), the vibration absorbing body 204 (see Fig. 5), and the cushion 205 (see Fig. 6). The structure and connection relationship of each part are as follows: A recess 301 (see FIG. 2) is opened on the body 201, and a magnetism generating device is mounted on the recess 301. The bottom portion, wherein the first magnetic steel ² (1⁄21, the electrode plate ² (1⁄2 ² , the second magnetic steel 2062) is laminated by the top-down magnetism generating device. The voice coil 202 is disposed on the magnetic body 201 Within the gap between the moving devices.

The plucking 203 covers the platform at the top of the body 201, and the periphery 502 of the plucking 203 is fixedly coupled to the body 201 such that the voice coil 202 and the magnetism generating device are located between the body 201 and the plucking 203.

The vibration absorbing body 204 is disposed above the plucking 203, wherein the bottom of the vibration absorbing body 204 is an annular concave edge 601, and the annular concave edge 601 of the bottom portion is embedded in the bonding plucking 203 and the inner wall 502 of the voice coil 202, so that the vibration absorbing body The wall of the 204 is sealingly bonded to the plucking 203 and the voice coil 202. The cushion 205 is bonded to the upper side of the vibration transmitting body .204.

The working principle of the audio driver of this embodiment is: when different audio currents are input to the voice coil 202, different electromagnetic fields are generated in the space between the body 201 and the magnetic generating device, so that the body 201 and the magnetic generating device are The voice coil 202 of the gap generates a vibration corresponding to the current input frequency, and the hammer 202 drives the plucking 203 to vibrate. The vibration transmitting body 204 transmits the vibration and the like outward through the cushion 205, and the vibration contacts the object, and the resonance is generated correspondingly. Sound waves.

In this embodiment, the plucking 203 covers the top platform of the body 201, and the periphery 501 of the plucking 203 is fixedly connected to the body 201, so that the plucking 203 is overlaid on the body 201, so that the plucking 203 and the body 201 are The sealing of the space is better, which is beneficial to improve the sealing performance of the vibration cavity, reduce the vibration loss, reduce the distortion, and is beneficial to widening the vibration audio range of the audio driver, and is beneficial to ensure the realization of the bass part audio. Further, the bottom of the vibration absorbing body 204 of the present embodiment is an annular concave edge 601, and the annular concave edge 601 is embeddedly bonded to the plucking 203 and the inner wall of the voice coil 202. Due to the compressed outward elastic force of the vibrating body 204 itself, the plucking 203 and the voice coil 202 can be tightly clamped together to form a whole body, which is advantageous for maintaining the compactness of the vibrating cavity and the voice coil 202. It is better to drive the plucking 203 and the vibration absorbing body 204 to vibrate and reduce the vibration loss. In addition, with respect to the audio driver structure shown in FIG. 1 of the prior art, the structure of the embodiment is applied, and only the parts need to be buckled during assembly, and finally, when the plucking 203 is installed, the screw 207 is used. The periphery 501 of the plucking 203 can be fixed on the body 201, and the operation procedure of multiple times of screwing is not required, so that the production process is simpler and the structure is more compact, and the compactness can be achieved, and the vibration transmission is flexible and simple. The transmission loss is small and the efficiency is high, so the frequency response is sensitive, the range is wide, and the distortion is small.

In the present embodiment, the plucking 203 is preferably made of a highly elastic metal material, so that the plucking 203 is easily vibrated to obtain a better sound effect.

In the present embodiment, in order to make the vibration of the plucking 203 more stable and powerful, the plucking 203 can be designed as a cantilever shape as shown in Figs.

The plucking 203 is composed of an inner ring 801, an outer ring 802, and a plurality of cantilever beams 803, and the plurality of cantilever beams 803 are radially rotated (for example, in the case of a counterclockwise shape, it may be set to be clockwise). Between the outer ring 801 and the inner ring 802. Compared with the prior art, the plucking 203 is provided with only the inner ring and the plucking of the cantilever. Since the fixing portion is provided at both ends of the main vibration transmitting member-the suspension beam 803, the size can be stably deformed and the vibration is more powerful. Robust, which helps improve audio conversion efficiency and tone.

The inner wall of the inner ring 801 of the plucking 203 is bonded to the annular concave edge 601 of the vibration absorbing body 204 and the voice coil 202, and the outer ring of the plucking 203 is connected to the platform of the body 201.

The cushion 205 is made of a colloidal material, which makes it elastic and has good protection properties.

The audio driver can be designed into various shapes according to the application scene, such as a circle, a square, and the like. In this embodiment, it is also possible to ^! The cushion 205 is set to the following structure:

The bottom surface of the cushion 205 is designed as a recess 701 recessed toward the top, and the bottom edge of the recess 701 is horizontally designed to extend outwardly from the convex flange 702, so that the entire cushion 205 has a hat-shaped design. At the time of installation, the recess 701 of the cushion 205 is on the platform at the top of the body 201, and the inner edge of the recess 701 of the cushion 205 is in contact with the outer edge of the vibration absorbing body 204. The bottom edge 702 of the cushion 205 Covered above the vibration absorbing body 204, the design can prevent the dust in the air from falling into the vibration cavity of the audio driver and affecting the effect of the audio vibration, thereby extending the audio driver. Service life.

In order to make the structure of the audio driver of the present embodiment more compact and easy to assemble the magnetism generating device, the magnetism generating device can be placed in the body 201 to perform the following design as shown in FIG. 2: at the level of the plate 2062 A bump strip 302 is disposed at a position opposite to each other, and an upper concave strip 303 is disposed at a horizontally opposite position of the first magnetic steel 2061, and a horizontal alignment of the electrode 2062 is disposed at a horizontally opposite position of the second magnetic steel 2062. The bump strip 302 is set at the position.

The above design is not only convenient for the installation limit of the first magnetic steel 2061, the electrode plate 2062, and the second magnetic steel 2062. The upper concave strips 3034 and the bump strips 302 disposed on the side of the magnetism generating device can also be used. The magnetic generating device generates a function of enhancing the concentration of the magnetic flux, which is advantageous for improving the efficiency of the conversion of the audio driver.

Referring to Fig. 2, in the present embodiment, the first magnetic steel 2061 and the second magnetic steel 2062 are distributed symmetrically on the top surface and the bottom surface of the electrode plate 2062 in the center of the plate 2062. Experiments have shown that this symmetry placement facilitates assembly.

The technical solutions provided by the embodiments of the present invention are described in detail above. The principles applied to help understand the embodiments of the present invention are applied herein. At the same time, for those skilled in the art, according to the embodiments of the present invention, There will be changes in the way and application scope. In summary, the contents of this manual should not be

Claims

1. An audio driver, comprising: a body, a magnetism generating device, a voice coil, a plucking, a vibration absorbing body, and a buffering cymbal;

a concave platform is formed on the body, the magnetic motion generating device is located at a bottom of the concave platform, and the magnetic force generating device is composed of a first magnetic steel, a plate, and a second magnetic steel stacked from top to bottom. Composition

The sound is disposed on a gap between the magnetism generating device and the body, the plucking is disposed on a platform of the body, and a periphery of the plucking is fixedly connected to the body;

2. An audio driver according to claim 1, wherein

The plucking is formed by an outer ring, an inner ring, and a plurality of cantilever beams connected between the inner ring and the outer ring;

The periphery of the plucking is fixedly connected to the body, specifically:

The plucked outer ring is coupled to the body.

3. An audio driver according to claim 2, wherein

The plucking has four or more of the plurality of cantilever beams which are arranged in a rotating shape and are distributed between the inner ring and the outer ring of the plucking.

4. An audio driver according to any one of claims 1 to 3, wherein the pluck is made of a highly elastic metal material.

The audio driver according to any one of claims 1 to 3, wherein the bottom surface of the cushion pad is a concave recess recessed toward the top, and the bottom edge of the concave platform protrudes horizontally outward; The cushion is adhered to the vibration absorbing body, specifically, The recessed cover of the cushion is placed on the vibration-transmitting body such that the inner side of the concave surface of the cushion is in contact with the outer edge of the vibration-transmitting body.

6. An audio driver according to any one of claims 1 to 3, wherein a magnetron generating means is placed in the recess of the body:

a bump strip is disposed at a horizontally opposite position of the plate

An upper concave strip is disposed at a horizontally facing position of the first magnetic steel.

7. An audio driver according to any one of claims 1 to 3, wherein the first magnetic steel and the second magnetic steel are symmetrically distributed on both sides of the plate.

8. An audio driver according to claim 7, wherein:

The first magnetic steel and the second magnetic steel have different sizes and specifications.

An audio driver according to any one of claims 1 to 3, wherein one end of the voice coil to which the acoustic coil is connected is disposed between the plate and the body.

10. An audio driver according to any one of claims 1 to 3, wherein the cushion is made of a gel.