DIAPHRAGM ASSEMBLY AND LOUDSPEAKER HAVING SAME

Abstract

A diaphragm assembly and a loudspeaker having the diaphragm assembly. The diaphragm assembly comprises a silica gel diaphragm, the diaphragm comprises an annular bending portion, and a diaphragm center portion and a diaphragm edge portion arranged on inner and outer sides of the bending portion respectively; an annular support member (40) is joined to the diaphragm edge portion through injection modeling; a dome (30) is joined to the diaphragm center portion; the support member (40) is a metallic member; and the diaphragm edge is at least joined to two surfaces of the support member (40) through injection modeling.

Claims

1. A diaphragm assembly, comprising a silica gel diaphragm, wherein the diaphragm comprises an annular bending portion, and a diaphragm center portion and a diaphragm edge portion arranged at an inner side and an outer side of the bending portion, respectively, wherein the diaphragm edge portion is coupled with an annular support member through injection molding, and the diaphragm center portion is coupled with a dome; the support member is a metallic member; and the diaphragm edge portion is coupled with at least two surfaces of the support member through injection molding.

2. The diaphragm assembly according to claim 1, wherein the diaphragm edge portion is simultaneously coupled with an inner lateral surface, an outer lateral surface and an upper surface of the support member through injection molding.

3. The diaphragm assembly according to claim 1, wherein the diaphragm edge portion is simultaneously coupled with an outer lateral surface and an upper surface of the support member through injection molding.

4. The diaphragm assembly according to claim 1, wherein the diaphragm edge portion is simultaneously coupled with an inner lateral surface and an upper surface of the support member through injection molding.

5. The diaphragm assembly according to claim 1, wherein the diaphragm edge portion is simultaneously coupled with an inner lateral surface, an outer lateral surface, an upper surface and a lower surface of the support member through injection molding.

6. The diaphragm assembly according to claim 1, wherein a material of the support member is one of stainless steel or brass.

7. The diaphragm assembly according to claim 6, wherein the diaphragm center portion is coupled with the dome through adhesive bonding.

8. The diaphragm assembly according to claim 6, wherein the diaphragm center portion is coupled with the dome through injection molding.

9. A loudspeaker, comprising a vibration system and a magnetic circuit system, wherein the vibration system comprises the diaphragm assembly according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic view showing the cross-section structure of the diaphragm assembly in the prior art;

[0022] FIG. 2 is a schematic view showing the cross-section structure of the diaphragm assembly according to a first embodiment of the present application;

[0023] FIG. 3 is a schematic view showing the cross-section structure of the diaphragm assembly according to a second embodiment of the present application;

[0024] FIG. 4 is a schematic view showing the cross-section structure of the diaphragm assembly according to a third embodiment of the present application;

[0025] FIG. 5 is a schematic view showing the cross-section structure of the diaphragm assembly according to a fourth embodiment of the present application;

[0026] FIG. 6 is a schematic view showing a cross-section structure of the diaphragm assembly according to a fifth embodiment of the present application;

[0027] FIG. 7 is a schematic view showing another cross-section structure of the diaphragm assembly according to the fifth embodiment of the present application; and

[0028] FIG. 8 is a schematic view showing yet another cross-section structure of the diaphragm assembly according to the fifth embodiment of the present application.

[0029] In the drawings: 20a-diaphragm; 20b-diaphragm; 20c-diaphragm; 20d-diaphragm; 20e-diaphragm; 20f-diaphragm; 20g-diaphragm; 20h-diaphragm; 30-dome; 40-support member.

DETAILED DESCRIPTION OF EMBODIMENTS

[0030] Hereinafter, the present application is described in detail in connection with the accompanying drawings and the embodiments.

[0031] In the present specification, the direction toward which the bending portion of the diaphragm protrudes is defined as the upward direction, and its opposite direction is defined as the downward direction. In the present specification, the inner lateral surface of the support member refers to the lateral surface of the support member closer to the center, and the outer lateral surface of the support member refers to the lateral surface of the support member away from the center.

First Embodiment

[0032] As shown in FIG. 2, a diaphragm assembly comprises a diaphragm 20b, and the diaphragm 20b is made of silica gel. The diaphragm 20b comprises an annular bending portion protruding upward, and a diaphragm center portion is provided at the inner side of the bending portion. The diaphragm center portion may be a closed structure or a ring-shaped structure with a center opening. In the present embodiment, it is preferable that the diaphragm center portion is a closed structure. A diaphragm edge portion having a planar structure is provided at the outer side of the bending portion, and the diaphragm center portion, the bending portion, and the diaphragm edge portion are formed as an integrated structure. The diaphragm edge portion is injection-molded with a support member 40 which is an annular structure corresponding to the shape of the diaphragm. The diaphragm edge portion is simultaneously coupled with the inner lateral surface, the outer lateral surface and the upper surface of the support member 40 through injection molding, that is, the diaphragm edge portion is an annular groove structure which opens downward, and the support member 40 is surrounded by the annular groove, except that the lower surface of the support member is exposed to the outside of the diaphragm edge portion.

[0033] As shown in FIG. 2, a dome 30 is bonded to the upper surface of the diaphragm center portion, and the dome 30 is a flat plate structure.

[0034] As shown in FIG. 2, the material of the support member 40 is stainless steel, brass or the like. When the support member 40 is a brass ring, as the diaphragm edge portion is wrapped around the lateral surfaces of the support member 40, the oxidation of the punching surface of the lateral surfaces of brass may be prevented, thereby decreasing the product requirements on the brass ring, simplifying the processing technology of the brass ring, and reducing raw material costs of the product.

[0035] As shown in FIG. 2, in the diaphragm assembly provided by the present application, during the molding of the silica gel diaphragm, the support member 40 is used as an insert and is disposed in the injection mold, and then the mold is filled with liquid silica gel material, and the diaphragm 20b is integral with the support member 40 while the diaphragm 20b is molded under higher temperature. Through such a bonding mode, i.e., injection molding, the bonding strength between the diaphragm 20b and the support member 40 is improved greatly, the diaphragm 20b will not be disengaged from the support member 40 during the operation of the loudspeaker, such that the stability and reliability of the product is greatly improved, the consistency of the product is good, its injection molding process is simple and easy to operate, thereby improving the production efficiency of the product effectively.

Second Embodiment

[0036] As shown in FIG. 3, the present embodiment is basically the same as the first embodiment, except that:

[0037] the edge portion of the diaphragm 20c is only coupled with the outer lateral surface and the upper surface of the support member 40 through injection molding.

[0038] Compared with the first embodiment, the silica gel used in this embodiment is more economical and the structure in this embodiment is simpler, but the bonding strength between the diaphragm 20c and the support member 40 is slightly smaller.

Third Embodiment

[0039] As shown in FIG. 4, the present embodiment is basically the same as the first embodiment, except that:

[0040] the edge portion of the diaphragm 20d is only coupled with the inner lateral surface and the upper surface of the support member 40 through injection molding.

[0041] Compared with the first embodiment, the silica gel used in this embodiment is more economical and the structure in this embodiment is simpler, but the bonding strength between the diaphragm 20d and the support member 40 is slightly smaller.

Fourth Embodiment

[0042] As shown in FIG. 5, the present embodiment is basically the same as the first embodiment, except that:

[0043] the edge portion of the diaphragm 20e is simultaneously coupled with the inner lateral surface, the outer lateral surface, the upper surface and the lower surface of the support member 40 through injection molding, i.e., the entire support member 40 is surrounded by the diaphragm edge portion.

[0044] Compared with the first embodiment, the bonding strength between the diaphragm 20e and the support member 40 in this embodiment is higher, and the diaphragm 20e will not be disengaged from the support member 40 whether the diaphragm 20e vibrates upward or downward, only that slightly more silica gel is used and the diaphragm assembly is slightly heavier.

Fifth Embodiment

[0045] The present embodiment is basically the same as the first to fourth embodiments, except that:

[0046] the diaphragm center portion is coupled with the dome 30 through injection molding, as illustrated below in connection with FIGS. 6, 7 and 8.

[0047] As shown in FIG. 6, the center portion of the diaphragm 20f is a closed structure which is coupled with the lateral surfaces and the upper surface of the dome 30 through injection molding.

[0048] As shown in FIG. 7, the center portion of the diaphragm 20g is also a closed structure which is coupled with the lateral surfaces, the upper surface and the lower surface of the dome 30 through injection molding, i.e., the dome 30 is surrounded by the diaphragm center portion.

[0049] As shown in FIG. 8, the center portion of the diaphragm 20h is an annular structure with a center opening, and the center portion of the diaphragm 20h is only coupled with the lateral surfaces as well as the edge portions of the upper surface and the lower surface of the dome 30 through injection molding, i.e., the diaphragm center portion is an annular groove structure which opens inward, and the dome 30 is clamped in the annular groove.

[0050] Compared with the first to the fourth embodiments, the stability and reliability of the product in this embodiment are higher, the consistency of the product in this embodiment is better, and the production efficiency of the product in this embodiment is higher.

[0051] The combination mode of the diaphragm center portion and the dome 30 is not limited to the above-described three structures which are merely illustrative examples of injection molding for the diaphragm center portion and the dome 30, and the diaphragm center portion may be only coupled with the lateral surfaces and the edge of the upper/lower surface of the dome 30 through injection molding, etc. Other combination modes of the diaphragm center portion and the dome 30 may be achieved by those skilled in the art without any creative labor according to the description of the present specification, and thus their particular embodiments are not detailed herein.

Sixth Embodiment

[0052] A loudspeaker comprises a vibration system and a magnetic circuit system, and the vibration system comprises a diaphragm assembly and a voice coil which are joined together. The diaphragm assembly is a diaphragm assembly described in the first to the fifth embodiments.

[0053] As the diaphragm assembly described in the first to the fifth embodiments is utilized in the loudspeaker of the present application, the diaphragm will not be disengaged from the support member or the dome when the loudspeaker operates, such that the reliability and stability are higher and the service life is longer.

[0054] In the present specification, the technical solution for joining the silica gel diaphragm and the support member through injection molding in the present application is illustrated by taking the diaphragm assemblies and the loudspeakers with the above structures as examples. This technical solution can be applied to the diaphragm assemblies and the loudspeakers with the above structures, but also can be applied to any diaphragm assembly and loudspeaker with a diaphragm made of silica gel in practical application. The technical solution of the present application can be applied to the diaphragm assemblies and loudspeakers with other structures by those skilled in the art without any creative labor according the description of the present specification. Thus, whether the structures of the diaphragm assembly and the loudspeaker are the same as that of the diaphragm assembly and the loudspeaker in the above-described embodiments or not, the technical solution that the silica gel diaphragm is coupled with the support member through injection molding so as to improve the bonding strength of the diaphragm assembly and the loudspeaker, falls into the protection scope of the present application.

[0055] The present application is not limited to the above specific embodiments, and various variations made by those skilled in the art according to the above conceptions without creative labor fall into the protection scope of the present application.