WO2015096526A1 - Suspended elastic diaphragm - Google Patents

Abstract

The present invention relates to the field of micro speakers, particularly to a suspended elastic diaphragm of a micro speaker. The suspended elastic diaphragm comprises a support installed around the end surface of the speaker diaphragm, a plurality of elastic arms and flexible plates; a suspension frame is connected to a fitting frame via at least two suspension arms; each elastic arm is arranged between the support and a flexible plate; one end of each elastic arm is connected to the inner side wall of the support, and the other end is connected to the outer side wall of the flexible plate; the inner wall of the flexible plate is provided with two oppositely disposed flanges; the support and the elastic arms are provided with conductive components; the conductive components on two elastic arms extend into the flanges; and the conductive components on the other elastic arms extend to the joint of the elastic arms and the flexible plate. The present invention avoids breaking of the voice coil lead while ensuring the communication of an electrical signal, prevents uneven vibration when reducing the weight of the vibration system, and effectively guards against product distortion.

Description

Suspended elastic diaphragm Technical field

The invention belongs to the field of micro-speakers, in particular to a suspension type elastic diaphragm for a micro-speaker.

Background technique

With the development of mobile communication technology, mobile multimedia audio technology has also developed. Accordingly, the microspeaker is also required to have high sound quality, high performance, high fidelity and the like.

The speaker belongs to an electroacoustic transducing device, and the electric energy causes the diaphragm to vibrate by the electromagnetic effect, and the vibrating diaphragm resonates with the surrounding air to emit sound. For the current magnetic circuit part of the speaker, if you want to get a better bass effect, the magnet must be as large as possible, but the large magnet needs a large voice coil to match, and the enlarged speaker is for mobile phones, tablets, notebooks, etc. In terms of electronic products, due to mobile phones, tablets are getting thinner and thinner, and the size is getting smaller and smaller, leaving less room for assembling speakers. Therefore, due to structural and space constraints, this type of electronic product cannot provide a suitable assembly space for an increased volume of the speaker, so that the problem of low sound pressure and low power of the speaker has not been solved. In order to increase the sound pressure and power of the speaker, it is necessary to increase the amplitude of the diaphragm, resulting in an increase in the weight of the vibration system. Therefore, the micro-speaker has been working hard in the industry to reduce the weight of the vibration system, as shown in Fig. 1, the vibration system Only the diaphragm and the voice coil, the voice coil wire is thin and light, the voice coil wire is connected to the diaphragm, and the welding is carried out on the bracket. When the working, the voice coil wire is easily broken by the tensile force, which is not high. Sound pressure.

Summary of the invention

The problem to be solved by the present invention is that the voice coil wire is susceptible to injury and tensile fracture, and a suspension type elastic diaphragm is provided.

The invention adopts the following technical solutions:

a suspension type elastic diaphragm, comprising a ring bracket for mounting on an end surface of the diaphragm of the speaker, a plurality of elastic arms, and a flexible board, wherein the suspension frame and the bonding frame are connected by at least two suspension arms, and the respective elastic arms are distributed Between the annular bracket and the flexible plate, one end of each elastic arm is connected to the inner wall surface of the annular bracket, and the other end is connected to the outer wall surface of the flexible board, and the inner wall of the flexible board is provided with two oppositely disposed flanges. The annular bracket and the elastic arm are provided with a conductive member, and the conductive member extends into the flange on two of the elastic arms, and the position of the conductive member on the remaining elastic arms extends to the joint of the elastic arm and the flexible plate.

The conductive member is provided at the end of the connection between the elastic arm and the flexible board with a hollow portion.

The annular bracket is a rectangular annular bracket, the flexible board is a rectangular flexible board, and the elastic arm is provided with four strips. One end of the elastic arm is connected to the inner wall of the connecting corner of the ring bracket, and the other end is connected to the outer wall of the connecting corner of the flexible board. When the connecting angle of the annular bracket is offset from the connecting angle of the flexible board.

Among the four elastic arms, two long elastic arms and two short elastic arms are symmetrically arranged, and the two short elastic arms are thick from the connecting corner of the annular bracket to the middle of the short elastic arm. The thickness from the intermediate position of the short elastic arm to the connection angle with the flexible board.

The back of the elastic arm and the flexible board is provided with a recessed groove at the back.

The invention has the advantages of avoiding the breakage of the voice coil lead while ensuring the transmission of the electric signal, preventing the vibration from being uneven when the weight of the vibration system is reduced, and effectively ensuring the distortion of the product.

DRAWINGS

1 is a schematic structural view of a vibration system in the prior art;

Figure 2 is a schematic view of the structure of the present invention;

Figure 3 is a schematic structural view of the present invention;

Figure 4 is a schematic structural view of a coil;

Figure 5 is a schematic view showing the structure of the suspension structure installed in the microspeaker of the present invention.

detailed description

As shown in FIG. 5, the present invention is installed in a suspension structure of a microspeaker, and the suspension structure of the microspeaker of the present invention includes a basin frame, a magnetic cover, a front cover, a magnetic circuit device, a voice coil, and a diaphragm. The magnetic cover is assembled in the basin frame and is located at one end of the basin frame, and the front cover is connected to the other end of the basin frame. The magnetic circuit device is located in the basin frame, and one end of the magnetic circuit device is supported on the magnetic cover, and the magnetic circuit device is composed of magnetic steel and a pole piece fixed integrally with the magnetic steel. One end of the voice coil surrounds the other end of the magnetic circuit device. The first end surface of the diaphragm is fixedly connected to the other end of the voice coil, and a plucking block 7 is connected to the second end surface of the diaphragm 6. When the diaphragm emits sound, it generates vibration and gravity, and the reverse force is generated by the plucking block and the diaphragm to smoothly vibrate, thereby reducing the vibration weight and improving the sound pressure of the speaker.

a suspension type elastic diaphragm, comprising a ring bracket for mounting on an end surface of the diaphragm of the speaker, a plurality of elastic arms, and a flexible board, wherein the suspension frame and the bonding frame are connected by at least two suspension arms, and the respective elastic arms are distributed Between the annular bracket and the flexible plate, one end of each elastic arm is connected to the inner wall surface of the annular bracket, and the other end is connected to the outer wall surface of the flexible board, and the inner wall of the flexible board is provided with two oppositely disposed flanges. The annular bracket and the elastic arm are provided with conductive members, and the conductive members extend into the flanges on the two elastic arms, and the position of the conductive members on the remaining elastic arms extends to the connection between the elastic arms and the flexible plates. The conductive member is integrally attached to the annular bracket, the elastic arm and the flexible plate, and then the coil is attached to the conductive member, and the coil wire is welded to the flange, and the coil joint is in close contact with the conductive member and vibrates along with the flexible plate. This will not break off due to vibration.

Wherein, in order to reduce the stress of the flexible plate and the elastic arm, a hollow portion is provided at an end of the connecting portion of the conductive member at the elastic arm and the flexible plate, the annular support is a rectangular annular support, the flexible plate is a rectangular flexible plate, and the elastic arm There are four strips, one end of the elastic arm is connected to the inner wall of the connecting corner of the ring bracket, and the other end is connected to the outer wall of the connecting corner of the flexible board. At this time, the connecting angle of the ring bracket is adjacent to the connecting angle of the flexible board, and the four elastic arms are Two long elastic arms and two short elastic arms are respectively symmetrically arranged, and the two short elastic arms are thick from the connection angle with the annular bracket to the middle of the short elastic arm and the short elastic arm The thickness between the position and the connection angle with the flexible board, in order to reduce the flexible board and the elastic arm The stress, the back of the joint between the elastic arm and the flexible board is provided with a recessed groove.

As shown in FIG. 3, the present invention comprises a rectangular flexible plate 2 and a rectangular annular support 1, and the annular support 1 and the flexible plate 2 are connected by four elastic arms, respectively, elastic arms A, B, C, D, elastic force One ends of the arms A, B, C, and D are connected to the inner side wall surface of the annular bracket 1, and the other end is connected to the outer side wall surface of the flexible board 2, wherein the elastic arm A and the elastic arm B are symmetrically disposed, and the elastic arm C and the elastic arm D are symmetrically disposed. As shown in FIG. 3, the annular bracket 1, the flexible board 2, and the elastic arms A, B, C, and D are all provided with conductive members, and the flexible board 2 is provided with conductive members 2a and 2b, and the elastic arm A is electrically conductive. In the component Aa, the elastic arm B is a conductive member Ba, the elastic arm C is a conductive member Ca, the elastic arm D is a conductive member Da, the annular bracket 1 is a conductive member 1a, the conductive member 1a and the conductive members Aa, Ba, Ca, Da is connected, the conductive members Ca and Da are respectively connected to the conductive members 2a and 2b, and the inner wall of the flexible board 2 is provided with two opposite flanges, respectively a flange 3 and a flange 4, and the end of the conductive member 2a extends to the flange A connection point 3a is formed on the third portion, and an end portion of the conductive member 2b extends to form a connection on the flange 4. Point 4a, the connection point 3a and the connection point 4a are connected with the wire end of the coil, as shown in Fig. 4, the coil is attached to the flexible board, so that the coil and the wire head vibrate together with the flexible board during vibration, and no In the case of falling off; the end of the conductive member Aa extends to the joint of the elastic arm A and the flexible board 2, and the end of the conductive member Ba extends to the joint of the elastic arm B and the flexible board 2, in the elastic arms A, B, C , the position of the connection point of D and the flexible board 2, the conductive parts are provided with hollow portions a, b, c, d, and the arrangement of the hollow portions a, b, c, d reduces the stress of the elastic arm and the conductive member, and Conducive to the softness of vibration.

In this embodiment, as shown in FIG. 3, the elastic arm A and the elastic arm B are short elastic arms, the elastic arms C and D are long elastic arms, and the elastic arm A is connected by the elastic arm A and the annular bracket 1 to the elastic force. One-half of the arm A is the elastic arm A1, and the joint of the elastic arm A and the flexible plate 2 to the elastic arm A is one-half of the elastic arm A2, and the thickness of the elastic arm A2 is smaller than the thickness of the elastic arm A1; The elastic arm B is connected by the elastic arm B and the annular bracket 1 to the elastic arm B at one-half of the elastic arm B1, and the connection between the elastic arm B and the flexible plate 2 is one-half of the elastic arm B. For the elastic arm B2, the thickness of the elastic arm B2 is smaller than the thickness of the elastic arm B1, and the thickness of the two short elastic arms is adjusted to achieve the inconsistency in the length of the elastic arm. The arm of the arm is the same, ensuring smooth vibration.

As shown in FIG. 3, the back of the joint of the elastic arms A, B, C, D and the flexible board 2 is provided with a recessed groove 5, and the arrangement of the recessed groove 5 eliminates the connection stress between the elastic arm and the flexible board, so that the vibration More stable.

While the invention has been described with respect to the embodiments of the present invention, it will be understood by those skilled in the art substance. The scope of the invention is to be limited only by the appended claims.

Claims (5)

a suspension type elastic diaphragm, comprising a ring bracket for mounting on an end surface of the diaphragm of the speaker, a plurality of elastic arms, and a flexible board, wherein the suspension frame and the bonding frame are connected by at least two suspension arms, and the respective elastic arms are distributed Between the annular bracket and the flexible plate, one end of each elastic arm is connected to the inner wall surface of the annular bracket, and the other end is connected to the outer wall surface of the flexible board, wherein the inner wall of the flexible board is provided with two opposite flanges. The annular bracket and the elastic arm are provided with a conductive member, and the conductive member extends into the flange on two of the elastic arms, and the position of the conductive member on the remaining elastic arms extends to the joint of the elastic arm and the flexible plate. The suspension type elastic diaphragm according to claim 1, wherein said conductive member is provided with a hollow portion at an end portion of the joint between the elastic arm and the flexible plate. The suspension type elastic diaphragm according to claim 1 or 2, wherein the annular support is a rectangular annular support, the flexible plate is a rectangular flexible plate, the elastic arm is provided with four, and one end of the elastic arm is connected to the ring. The bracket is connected to the inner wall of the corner, and the other end is connected to the outer wall of the connecting corner of the flexible board. At this time, the connecting angle of the annular bracket is adjacent to the connecting angle of the flexible board. The suspension type elastic diaphragm according to claim 3, wherein two of the four elastic arms are symmetrically disposed with two long elastic arms and two short elastic arms, and two short elastic arms are The thickness from the connection corner of the annular bracket to the intermediate position of the short elastic arm is thicker than the thickness between the intermediate position of the short elastic arm to the connection angle with the flexible board. The suspension type elastic diaphragm according to claim 3, wherein the back of the elastic arm and the flexible board is provided with a recessed groove.

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