JP3246183B2 - Vibration member for speaker and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a component member for generating a sound or the like, for example, a dynamic speaker, and is particularly provided at a vibrating member body and an end portion thereof each formed of a different resin material. TECHNICAL FIELD The present invention relates to a speaker vibration member having an edge portion to be joined to each other and a method of manufacturing the same.

[0002]

2. Description of the Related Art Generally, a vibration member used for a speaker is provided with a vibration member main body formed in a truncated conical cylindrical shape. The vibrating member body in the shape of a truncated cone has a large-diameter opening end and a small-diameter opening end that are opposed to each other, and the large-diameter opening end is supported by the frame via an annular edge. A bobbin around which the voice coil is wound is attached to the small-diameter opening end, and is supported by a frame via a damper member.

In this speaker vibrating member, the vibrating member main body and the edge portion are formed of different resin materials, and an annular edge portion is fixed to the large-diameter opening end side of the vibrating member main body in advance. It has been proposed to be integrated and constitute a speaker vibration member as a whole. Therefore, by integrating the vibration member main body and the edge portion of the speaker vibration member, simplification in assembling the speaker is provided, and the quality of sound reproduced by the speaker is improved.

In a conventional speaker vibration member, for example, as shown in FIGS. 14 and 15, a vibration member main body 11 and an edge portion 12 as an elastic support portion are separately formed.
Thereafter, as shown in FIG.
The vibration member main body 11 and the edge portion 12 are obtained by being mutually joined and integrated.

At this time, the vibration member main body 11 is, for example,
Obtained by injection molding using a resin material as a molding material, the entirety is formed into a truncated conical cylindrical shape, and large-diameter opening ends 11 opposed to each other.
A and a small-diameter opening end 11B. Edge part 1
2 is obtained by, for example, injection molding using a resin material different from the resin material for the vibration member main body 11 as a molding material, and has an annular shape having a diameter corresponding to the large-diameter opening end 11A of the vibration member main body 11. An edge main body 12A and a gasket portion 12B connected to the outer peripheral edge of the edge main body 12A and surrounding the edge main body 12A are provided. Then, as shown in FIG. 16, the inner peripheral edge of the edge main body 12 </ b> A in the edge portion 12 and the portion near the large-diameter opening end 11 </ b> A in the vibration member main body 11 are bonded to each other using the adhesive 13. The vibration member main body 11 and the edge portion 12 are integrated.

[0006]

As described above, in the conventional speaker vibration member obtained by integrating the vibration member main body 11 and the edge portion 12, the vibration member main body 11
Due to the fact that the adhesive 13 is cured by using the adhesive 13, the acoustic characteristics after the adhesive 13 is cured depend on the characteristics of the adhesive 13, the variation in the amount of the adhesive 13 applied, and the like. Will be. For this reason, the vibration member main body 11 has a problem that it is difficult to control its acoustic characteristics.

Further, the conventional method of manufacturing a vibration member for a speaker, particularly when the vibration member main body 11 and the edge portion 12 are formed using a polypropylene resin material or an elastomer resin material as a molding material, the mutual adhesive force is reduced. A primer is required to increase the temperature, and its application step is required.
Therefore, the conventional method for manufacturing a speaker vibration member is as follows.
Integrating the vibration member main body 11 and the edge portion 12 is inferior in work efficiency, and it is difficult to achieve uniform quality of the obtained speaker vibration member.

Further, the vibration member main body 11 and the edge portion 12
The speaker vibrating member integrated by bonding with the adhesive 13 using the adhesive 13 is corrected when there is distortion or deformation, or when distortion or deformation occurs after being integrated. It is difficult. For this reason, the speaker vibration member that has been distorted or deformed must be disposed of. Therefore, in the manufacture of the conventional speaker vibration member,
Despite the need for a relatively large number of man-hours, there is a problem that the production yield is low and the production cost increases.

In view of the above, the present invention provides a vibration member main body formed of different resin materials and an elastic supporting portion for supporting the large-diameter opening end and / or the small-diameter opening end thereof.
It is constructed by being joined together without using an adhesive, the acoustic characteristics are easily controlled, and the vibration member body and elastic support are integrated under improved work efficiency, and the quality is uniform. It is an object of the present invention to provide a method of manufacturing a speaker vibration member that can be easily modified and can easily correct distortion, deformation, and the like of the speaker vibration member.

Further, according to the present invention, the vibration member main body and the elastic supporting portion, each formed of a different resin material, are mutually joined without using an adhesive, and the acoustic characteristics can be easily controlled. It is an object of the present invention to provide a speaker vibrating member capable of making the quality uniform.

[0011]

In order to achieve the above-mentioned object, a method of manufacturing a speaker vibration member according to the present invention comprises a vibration member main body having a truncated conical cylindrical shape, and a small-diameter opening end of the vibration member main body. A method of manufacturing a speaker vibration member comprising a damper part supporting a vibration part, wherein a communicating part is provided between a vibration member main body part having a vibration member main body cavity and a damper part mold part having a damper part cavity. Is provided, and the first resin material is injected into the vibration member main body cavity to form the vibration member main body using a molding die configured by freely combining the mold and opening the mold. A second resin material different from the first resin material is injected into the damper portion cavity of the clamped damper portion mold portion, and the vibration member main body formed of the first resin material and the second resin material And more shaped damper unit, are integrated in a molten intimate contact in the mutual joint formed by the mutual communication portion integrally formed vibration member speaker. The method for manufacturing a speaker vibration member according to the present invention includes a vibration member main body having a truncated cone shape, an edge portion supporting the large-diameter opening end portion, and a damper portion supporting the small-diameter opening end portion of the vibration member main body. And a method of manufacturing a speaker vibration member comprising: a vibration member body cavity having a vibration member body cavity; an edge cavity having an edge cavity and a damper cavity; After the first resin material is injected into the vibrating member main body cavity to form the vibrating member main body by using a molding die which is provided with a mutual communication portion and which is freely combined with the mold clamping and opening, the vibrating member main body mold is formed. A second resin material different from the first resin material in the edge cavity and the damper cavity of the edge mold and the damper mold clamped to the mold;
The vibrating member body formed of the first resin material and the edge portion and the damper portion formed of the second resin material are melted and adhered to each other at an interconnecting portion formed by the interconnecting portion. The vibrating member for a speaker is integrally formed in a state.

A speaker vibration member according to the present invention comprises a vibration member main body in the shape of a truncated cone and an annular damper portion supporting a small-diameter opening end of the vibration member main body. In the above, the vibration member body and the damper portion are formed of different resin materials, and the mutual joining portion between the vibration member body and the damper portion is
They are integrally connected in a molten state. A vibration member for a speaker according to the present invention includes a vibration member main body in the shape of a truncated cone, an annular edge portion supporting the large-diameter opening end portion, and an annular damper supporting the small-diameter opening end portion. In the speaker vibration member composed of the portion, the vibration member body, the edge portion and the damper portion are formed of different resin materials, and the mutual joining portion between the vibration member body, the edge portion, and the damper portion, They are integrally connected in a fused state.

[0013]

According to the method of manufacturing a speaker vibration member according to the present invention, a vibration member body molded using a first resin material as a molding material and an edge portion and / or a damper molded using a second resin material as a molding material are provided. By joining the parts to each other in a melt-adhered state, the parts are joined and integrated without using an adhesive, and a speaker vibration member is formed. Therefore, the integration of the vibration member main body with the edge portion and / or the damper portion is performed with improved work efficiency, and the quality of the obtained speaker vibration member is made uniform. Further, since the speaker vibrating member does not use an adhesive, it is easy to control its acoustic characteristics.

Further, according to the method of manufacturing a vibration member for a speaker according to the present invention, the vibration member main body and the edge portion and / or the damper portion are integrated by their mutual joined portions being in a melt-adhered state. In a state where it takes a proper form, heating is performed at a temperature in a temperature range of approximately 50 ° C. to 90 ° C. for a time in a time range of approximately 30 minutes to 60 minutes, After that, an annealing process that is naturally cooled is applied, so that distortions and deformations generated at the edge portion and the like of the speaker vibration member can be easily corrected by the annealing process, thereby preventing the occurrence of distortions and deformations in each portion. Is done. When the above-described annealing process is performed on the speaker vibration member, the speaker vibration member is preferably mounted on a holding device that holds the speaker vibration member in an appropriate form. Such a holding device is constituted by, for example, a frame structure that fixes and supports the outer peripheral side of the edge portion and supports the small-diameter opening end of the vibration member main body via a damper member.

Further, in the speaker vibration member according to the present invention, the mutual connection portions of the vibration member main body and the edge portion and / or the damper portion are integrated in a melt-adhered state, so that the entire vibration system is formed. The variation in rigidity is reduced, and the acoustic characteristics become uniform.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A speaker vibration member and a method of manufacturing the same according to the present invention will be described below with reference to FIGS. 1 to 13 and FIGS. First, the method of manufacturing the vibrating member for a speaker according to the first embodiment shown in FIGS. 1 to 7 uses a vibrating member main body 36 each formed using a resin material as a molding material.
The speaker vibrating member 35 shown in FIG. 2 is formed by integrating the edge part 37 with the speaker 37. In manufacturing the speaker vibrating member 35, the molding die 21 shown in FIG. 5 is used. . The molding die 21 includes a lower die 22 and an upper die 23 disposed above the lower die 22.

The upper mold 23 has a mold central portion 24, an annular movable mold portion 25 surrounding the mold central portion 24, and further surrounding the annular movable mold portion 25 outside the annular movable mold portion 25. And an annular outer peripheral portion 26 that is arranged in a manner as described above. The upper mold 23 includes an annular movable mold part 25 and a mold central part 24.
By making a slight vertical movement relative to the annular mold outer peripheral portion 26, the lower position and the upper position can be selectively set.

As shown in FIG. 5, the molding die 21 is located between the lower die 22 and the upper center 23 of the upper die 23 when the annular movable die 25 is in the lowered position. In addition, a vibration member main body cavity 27 which is a mold space for molding the vibration member main body 36 is formed. Further, in the molding die 21, a part of an edge portion cavity 28 which is a die space for forming an edge portion is formed between the lower die 22 and the annular outer peripheral portion 26 of the upper die 23. Further, the molding die 21 is provided between the lower die 22 and a part of the annular movable die portion 25 of the upper die 23, with one of the mutually communicating portions 29 common to both the vibration member main body cavity 27 and the edge portion cavity 28. A part is formed. That is, the molding die 21
When the movable movable mold part 25 is in the lowered position, the lower mold 2
The main portion of the edge portion cavity 28 is not formed between the second mold 2 and the annular movable mold portion 25 of the upper mold 23.

On the other hand, the molding die 21 is
Is in the raised position, a vibration member main body cavity 27 is formed between the lower mold 22 and the mold center portion 24 of the upper mold 23, and the lower mold 22 and the upper mold 23 are formed.
The edge portion cavity 28 is formed entirely including the main portion between the annular movable mold portion 25 and the annular mold outer peripheral portion 26 in FIG. Further, an intercommunicating portion 29 common to both the vibration member main body cavity 27 and the edge portion cavity 28 is entirely formed between the lower mold 22 and a part of the annular movable mold portion 25 in the upper mold 23. ing.

The lower die 22 is formed with a gate portion 30 penetrating therethrough to connect the vibrating member main body cavity 27 to the outside of the molding die 21, and an annular die outer peripheral portion 26 of the upper die 23. A gate portion 3 penetrating therethrough to connect the edge cavity 28 to the outside of the molding die 21;
1 is formed. When the molding process is performed, the molding material is injected into the vibration member main body cavity 27 through the gate portion 30, and the molding material is injected into the gate portion 3.
1 is injected into the edge portion cavity 28.

With the molding die 21 prepared,
First, as shown in FIG. 5, the annular movable mold part 25 in the molding die 21 is set to the lower position, and as shown by the white arrow in FIG. 5, for example, an olefin-based resin material is used. A first resin material 33 as a resin material is injected into the vibrating member main body cavity 27 through the gate portion 30, and
Including a part of the mutual communication part 29 formed between the lower mold 22 and a part of the annular movable mold part 25 in the upper mold 23,
And the forming process of the vibration member main body 36 with the first resin material 33 is performed.

At this time, the lower portion 22 and the upper portion 23 of the molding die 21 are
The main portion of the edge portion cavity 28 is not formed between the ring-shaped movable portion 25 and the annular movable mold portion 25 in FIG. For this reason, in the molding die 21, the first resin material 33 filled in the vibration member main body cavity 27 is prevented from flowing into the edge portion cavity 28 through the mutual communication portion 29.

Subsequently, as shown in FIG.
Shifts from the state in which the annular movable mold part 25 is in the lowered position to the state in which it is in the raised position. The molding die 21 is made of, for example, a styrene-based resin material, in particular, a second polystyrene resin material, as shown by an outline arrow in FIG.
Is injected into the edge portion cavity 28 through the gate portion 31. The molding die 21 is formed in the edge portion cavity 28 between the lower die 22 and a part of the annular movable die part 25 in the upper die 23, and a part thereof is already formed by the first resin material 33. Including the mutual communication part 29 in which a part of the
And the second resin material 34 is used to form the edge 37.

At this time, in the mutual communication portion 29, a part of the edge portion 37 is formed by the second resin material 34 so as to overlap with a part of the vibration member main body formed by the first resin material 33. That is, a part of the vibration member main body 36 and a part of the edge portion 37 overlapped with the vibration member main body 36 are joined to each other in a melt-adhered state. Therefore, the molding die 2
In the communication part 29, a vibration member main body 36 formed of a first resin material 33 and a second resin material 34
The edge portion 37 formed by the above forms an interconnecting portion which is brought into a melt-adhesion state.

As described above, after the molding die 21 has been subjected to the molding of the vibrating member main body 36 with the first resin material 33 and the molding of the edge portion 37 with the second resin material 34, the mold opening operation is performed. Is carried out, and the vibration member main body 36 formed of the first resin material 33 and the edge portion 37 formed of the second resin material 34 are brought into a melt-adhered state at the mutual joining portion, and the vibration for the speaker is obtained. The member 35 is formed integrally. The speaker vibration member 35 is taken out of the molding die 21 that has been opened as a whole.

The speaker vibrating member 35 shown in FIG. 2 has a vibrating member main body 36 formed by using a polypropylene resin material as a first resin material 33 and an edge portion formed by using a polystyrene resin material as a second resin material 34. 37 are integrated. As described above, the speaker vibration member 35 is formed by using the polypropylene resin material for the vibration member main body 36, while the edge part 37 is formed by using the polystyrene resin material for the vibration member main body 36. In contrast, the edge portion 37 is more flexible.

The vibrating member main body 36 is formed in the shape of a truncated cone as a whole, has a large-diameter opening end 38, and is provided with a connecting portion 39 facing the large-diameter opening end 38. The connecting portion 39 includes the first resin material 3 in the gate portion 30.
No. 3 first break 39A is left. The edge portion 37 is a large-diameter opening end portion 38 of the vibration member main body 36.
And an annular gasket portion 42 that is connected to the outer peripheral edge 41A of the edge main body 41 and surrounds the edge main body 41. In the gasket part 42, a second broken part 42A of the second resin material 34 in the gate part 31 is left.

The speaker vibrating member 35 has an inner peripheral portion 41B of the edge body 41 of the edge portion 37.
The vibration member main body 36 is formed so as to overlap with a portion 38 </ b> A in the vicinity of the large-diameter opening end 38. That is, the speaker vibration member 35 has an interconnecting portion in which the portion 38A near the large-diameter opening end 38 of the vibration member main body 36 and the inner peripheral edge 41B of the edge main body 41 of the edge portion 37 are in a melt-adhered state. Is formed.

Subsequently, the speaker vibrating member 35 includes a process of cutting off the connecting portion 39 provided on the vibrating member main body 36 together with the broken portion 39A of the first resin material 33 remaining on the connecting portion 39, and a process of cutting off the edge portion 37. A process of cutting off the broken portion 42A of the second resin material 34 left on the gasket portion 42 is performed. Further, if necessary, the speaker vibrating member 35 is subjected to the above-described process of trimming the vibrating member body 36 and the edge portion 37, respectively, and as shown in FIG. End 38
, A speaker vibration member 35 having a small-diameter opening end 40 opposed to.

In the speaker vibration member 35 obtained as described above, as shown in FIG. 4, the large-diameter opening end 38 of the vibration member main body 36 in which the mutually joined portions in the melt-adhesion state are formed. And the inner peripheral edge portion 41B of the edge main body 41 of the edge portion 37 are superimposed on each other by melting each other on their joining surfaces.

Further, as shown in FIG. 1, a speaker vibration member 35 comprising an integrated vibration member main body 36 and an edge portion 37 is a holding device for holding the speaker vibration member 35 in an appropriate form. It is mounted on the frame structure 44 that constitutes it. The frame structure 44 covers the small-diameter opening end 40 of the vibration member main body 36 from the rear side.
The whole is formed in a truncated conical cylindrical shape and has a large-diameter end side cut-off portion 4.
5 and a small-diameter end side cut-off portion 46 are provided. An annular damper member 47 is attached to the small-diameter end side cut portion 46.

The speaker vibrating member 35 is shown in FIG.
As shown in FIG.
Is a large-diameter end side cut-off portion 45 provided on the frame structure 44.
And the vibration member main body 3
6 near the small-diameter opening end 40 is
Is mounted on the frame structure 44 by being supported by the annular damper member 47 attached to the small-diameter end side cut-off portion 46 provided in the frame member 44.

As described above, the speaker vibrating member 35 mounted on the frame structure 44 and held in an appropriate form by the frame structure 44 has a temperature in the bath from 50 ° C. to 90 ° C.
It is arranged in a constant temperature bath set to a temperature within the temperature range of ° C, and is maintained at a temperature within the temperature range of 50 ° C to 90 ° C, and a time within a time range of 30 minutes to 60 minutes. Is applied. After that, the speaker vibration member 35 is moved out of the constant temperature bath, left at room temperature, and naturally cooled.

That is, the speaker vibrating member 35 held in an appropriate form by the frame structure 44 has a temperature of 50 ° C.
To 90 ° C. for a period of time from 30 minutes to 60 minutes, followed by annealing for natural cooling. By the annealing process, the speaker vibration member 35 is formed.
Then, even after being detached from the frame structure 44, the appropriate form similar to the state held by the frame structure 44 is maintained.

After the annealing process is completed, the speaker vibrating member 35 that has completed the natural cooling is removed from the frame structure 44. In the speaker vibration member 35 composed of the vibration member main body 36 and the edge portion 37, the first resin material 3 made of a polypropylene resin material is used.
3, the edge portion 37 formed of the second resin material 34 made of a polystyrene resin material is more flexible than the vibration member body 36 formed of 3.
Good acoustic characteristics can be obtained.

In the above description, the heating temperature and the heating time for annealing the speaker vibrating member 35 are within the temperature range from 50 ° C. to 90 ° C. and within the time range from 30 minutes to 60 minutes. However, the temperature range from 50 ° C. to 90 ° C. and the time range from 30 minutes to 60 minutes need not be strict. That is, approximately 50 including a range from a temperature slightly lower than 50 ° C. to a temperature slightly higher than 90 ° C.
About 30 ° C., including a temperature range from about 90 ° C. to a time slightly shorter than 30 minutes to slightly longer than 60 minutes.
It is sufficient to set the time within the time range from minutes to 60 minutes.

According to the example of the method of manufacturing the speaker vibration member according to the present invention as described above, the vibration member main body 36 formed of the first resin material 33 and the second resin material 34 are formed. The integration with the edge portion 37 is not performed by bonding the two using an adhesive,
In the respective molding processes of the vibration member main body 36 and the edge portion 37, the mutual joining portions formed on the both are made to be in a state of fusion adhesion, so that their integration is performed with improved work efficiency. Will be. Therefore, the quality of the obtained speaker vibration member 35 can be made uniform, and its acoustic characteristics can be easily controlled by not using an adhesive.

Further, the speaker vibrating member 35 thus obtained is maintained at a temperature within a temperature range of approximately 50 ° C. to 90 ° C. for approximately 30 minutes while being held in an appropriate form by the frame structure 44. After heating is performed for a time within a time range of up to 60 minutes, an annealing process for naturally cooling is performed, and thereafter, an appropriate form is maintained, and the vibration member for a speaker is obtained. For this reason, the speaker vibration member 35 is completed as a speaker vibration member having no distortion, deformation, or the like in each part by easily correcting distortion, deformation, or the like generated in the edge portion 37 or the like.

The speaker vibrating member 35 of the first embodiment manufactured by the above-described method of manufacturing the speaker vibrating member will be described with reference to FIG. The speaker vibration member 35 includes a vibration member main body 36, an edge portion 37,
And a gasket portion 42 located on the outer periphery of the edge portion.

The vibrating member main body 36 is formed in a truncated conical cylindrical shape using a polypropylene resin material as a molding material, and has a large-diameter opening end 38 and a small-diameter opening 109 opposed to the large-diameter opening 38. ing. Further, a cylindrical portion is connected to and formed integrally with the small-diameter opening 109. The vibration member main body 36 is connected to a joining portion 38A provided along the main surface of the large-diameter opening end portion 38 by overlapping a joining portion 41B provided on the inner peripheral back surface of the edge portion 37.

The edge portion 37 is formed in an annular shape by using a polystyrene resin material as a molding material, and is provided along the edge portion main body 41 bulging into a substantially circular arc and the inner peripheral back surface of the edge portion main body 41. It is composed of a joint 41B and a joint 41A provided along the outer periphery.

The gasket portion 42 is formed in an annular shape using a polystyrene resin material as a molding material, and is formed integrally with a joining portion 41A provided along the outer peripheral portion of the edge portion 37 by connecting its inner peripheral portion. .

In the speaker vibrating member 35 configured as described above, the vibrating member main body 36 and the edge portion 37 are joined to each other in a melt-adhered state without using an adhesive, and the edge portion 37 and the gasket Since the portion 42 is formed integrally, the quality such as the joint state and the rigidity of the entire vibration system becomes uniform, and the acoustic characteristics can be controlled accurately.

As described above, the first speaker vibrating member 35 is formed by joining the vibrating member main body 36 and the edge portion in a melt-adhered state without using an adhesive.
The quality such as the joining state and the rigidity of the entire vibration system becomes uniform, and the acoustic characteristics can be controlled accurately. Also,
By joining without using an adhesive, a production process is simplified and production efficiency is improved.

Next, a method of manufacturing the vibration member for the second embodiment will be described with reference to FIGS. The manufacturing method of the speaker vibration member according to the embodiment is such that the speaker member shown in FIG. 9 is obtained by integrating the vibration member main body 81 and the edge portion 79 and the damper portion 83 each formed by using a resin material as a molding material. The vibration member 85 is formed. In manufacturing the vibration member 85 for a speaker, a molding die 50 shown in FIG. 10 is used. The molding die 50 includes a movable upper die 52 and a fixed lower die 51.
It is composed of

The upper mold 52 has a mold central portion 54, an annular movable mold portion 53 surrounding the mold central portion 54, and an annular movable mold portion 53 further outside the annular movable mold portion 53.
And an annular outer peripheral portion 55 arranged so as to surround the outer peripheral portion. The upper mold 52 has a structure in which the lower movable position and the upper movable position can be selectively set by the annular movable mold portion 53 performing a slight vertical relative movement with respect to the mold central portion 54 and the annular mold outer peripheral portion 55. It has been.

The lower mold 51 includes a mold central portion 56, a first annular movable mold portion 57 surrounding the mold central portion 56,
An outer peripheral portion 59 surrounding the annular movable portion 57 is further disposed outside the annular movable portion 53, and an upper mold 52 is provided.
A second annular movable mold portion 58 arranged at a position facing the mold central portion 54, and an annular mold upper portion 60 arranged at a position facing the annular movable mold portion 53 and the annular mold outer peripheral portion 55 of the upper mold 52. It is composed of The annular movable mold part 58 is configured by combining a first semi-annular movable mold part 58A and a second semi-annular movable mold part 58B.

The lower mold 51 has a first annular movable mold part 57,
The structure is such that relative movement in the vertical direction is slightly performed with respect to the mold central portion 56 and the annular mold outer peripheral portion 59, so that the descending position and the ascending position can be selectively set. Also, the lower mold 51 is
The second annular movable mold portion 58 makes a slight horizontal relative movement with respect to the mold upper portion 60 and the annular mold outer peripheral portion 59,
The structure is such that the descending position and the ascending position can be selectively taken.

Then, the molding die 50 is
In the state where is located at the lower position, a vibration member main body cavity 61 which is a mold space for forming the vibration member main body 81 is formed between the lower mold 51 and the mold central portion 54 of the upper mold 52. The molding die 50 is provided between the annular movable die portion 58 of the lower die 51 and the die center portion 54 of the upper die 52.
Edge cavity 6 which is a mold space for forming
2 is formed.

Further, the molding die 50 is a damper which is a mold space for forming a damper part 83 between the first annular movable mold part 57 and the second annular movable mold part 58 in the lower mold 51. An internal cavity 64 is formed. Furthermore,
The molding die 50 is provided between the annular movable mold portion 58 of the lower mold 51 and the annular movable mold portion 53 of the upper mold.
A part of the mutual communication part 63 common to both the first part 1 and the edge part cavity 62 is formed. And the molding die 50
When the annular movable part 53 is in the lowered position, between the annular mold upper part 60 of the lower mold 51 and the annular movable mold part 53 of the upper mold 52,
The main portion of the edge portion cavity 62 is not formed.

On the other hand, under the condition that the annular movable mold portion 53 of the upper mold 52 is in the raised position, the molding die 50 is vibrated between the lower mold 51 and the mold central portion 54 of the upper mold 52. A member body cavity 61 is formed. The molding die 50 is
An edge cavity 62 is formed as a whole including a main part thereof between the annular movable mold part 53 and the annular outer peripheral part 55 of the lower mold 51 and the upper mold 52. Further, the molding die 50
In the lower die 51 and a part of the annular movable portion 53 of the upper die 52, an interconnecting portion common to both the vibration member main body cavity 61 and the edge portion cavity 62 is formed as a whole.

The lower die 51 is formed with a gate 71 penetrating therethrough and connecting the vibration member main body cavity 61 and the outside of the molding die 50 at substantially the center. Further, the lower die 51 is formed with a gate portion 73 penetrating therethrough and connecting the damper portion cavity 64 to the outside of the molding die 50. The upper mold 52 has an annular mold outer peripheral portion 55 formed with a gate 72 penetrating therethrough and connecting the edge cavity 62 to the outside of the molding die 50.

When the molding die 50 is molded, the first resin material 74 is injected into the vibration member main body cavity 61 through the gate portion 71. Further, the molding die 50 is configured such that the second resin material 75 is injected into the edge portion cavity 62 through the gate portion 72, and
Is injected into the damper portion cavity 64 through the gate portion 73.

A method of manufacturing the speaker vibration member 85 by using the molding die 50 configured as described above will be described below. As shown in FIG. 10, the molding die 50 is in a state where the annular movable mold part 53 of the upper mold 52 is in the lowered position, and the first annular movable mold part 57 of the lower mold 51 is
Takes the ascending position.

As shown in FIG. 11, the molding die 50 is made of, for example, a first resin material 74 made of, for example, an olefin-based thermoplastic resin material, particularly a polypropylene resin material, through a gate portion 71 and a vibration member main body cavity 61. It is injected inside. Then, the molding die 50 includes the vibrating member main body cavity 61 including a part of the mutual communication part 63 formed between the lower die 51 and a part of the annular movable die part 53 of the upper die 52, The first resin material 74 is filled, and the vibration member main body 81 is formed from the first resin material 74.

At this time, the molding die 50 is moved to the lower die 51 by moving the annular movable die 53 of the upper die 52 to the lower position.
The main part of the edge cavity 62 is not formed between the upper mold 52 and the annular movable mold part 53.
For this reason, the first resin material 74 filled in the vibration member main body cavity 61 is prevented from flowing into the edge portion cavity 62 through the mutual communication portion 63.

Further, the molding die 50 is formed by setting the first annular movable die portion 57 of the lower die 51 to the raised position.
In FIG. 1, no damper cavity 64 is formed between the first annular movable mold part 57 and the second annular movable mold part 58. For this reason, the first resin material 74 filled in the vibration member main body cavity 61 is prevented from flowing into the damper portion cavity 64.

Immediately after the vibration member main body 81 is molded, the molding die 50 shifts the annular movable mold portion 53 of the upper mold 52 from the lowered position to the raised position, as shown in FIG. In addition, the first annular movable mold portion 57 of the lower mold 51
Is shifted from the ascending position to the descending position.

As shown in FIG. 13, the molding die 50 is formed by injecting, for example, a second resin material 75 made of a styrene resin material, particularly an elastomer resin material, into the edge portion cavity 62 through the gate portion 72. Then, a third resin material 76 made of, for example, a nylon-based resin material or a polypropylene resin material is injected into the damper portion cavity 64 through the gate portion 73. At this time, the second resin material 75 and the third resin material 76 are simultaneously injected into the molding die 50 from the gate 72 and the gate 73, respectively.

The molding die 50 is formed between the lower die 51 and a part of the annular movable die part 53 of the upper die 52, and the vibrating part already formed with the first resin material 74 is formed on the part thereof. Including the mutual communication part 63 in which a part of the member body 81 is arranged,
By filling the edge portion cavity 62 with the second resin material 75, the edge portion 79 is formed from the second resin material 75.

At this time, the molding die 50 is overlapped on a part of the vibration member main body 81 formed in the mutual communication part 63 by the first resin material 74, and a part of the edge part is formed by the second resin material 75. Is formed. For this reason, a part of the vibration member main body 81 and a part of the edge portion superposed on the vibration member main body 81 are joined to each other in a state of melt adhesion. Therefore, the molding die 50 is connected to the vibration member main body 81 formed of the first resin material 74 and the second
The edge portion 79 formed of the resin material 75 forms an interconnecting portion that is brought into a melt-adhesion state.

The molding die 50 is made of the first resin material 7.
4 over a part of the vibration member main body 81 formed by
A part of the damper portion 83 is formed by the third resin material 76. For this reason, a part of the vibration member main body 81 and a part of the damper part 83 overlapped therewith are joined to each other in a state of melt adhesion. Therefore, the molding die 5
Reference numeral 0 denotes an interconnecting portion in which the vibration member main body 81 formed of the first resin material 74 and the damper portion 83 formed of the third resin material 76 are brought into a melt-adhered state.

As described above, after the forming process of the edge portion 79 with the second resin material 75 and the forming process of the damper portion 83 with the third resin material 76, the upper mold 52 is formed. And the lower mold 51 are opened. In the lower mold 51, the second annular movable mold part 58 is divided into a first semi-annular movable mold part 58A and a second semi-annular movable mold part,
When the semi-annular movable mold portions 58A and 58B slide in the horizontal direction, a mold opening operation is performed. Then, the speaker vibration member 85 in which the vibration member main body 81 and the damper portion 79 are joined is taken out from the lower mold 51 that has been opened.

A speaker vibration member 85 shown in FIG. 8 has a vibration member main body 81 formed of a polypropylene resin material as a first resin material 74 and an edge portion formed of an elastomer resin material as a second resin material 75. 79 and a damper part 83 formed of a polypropylene resin material as the third resin material 76 are obtained by being integrated.

The vibrating member main body 81 is entirely formed in a truncated cone shape, has a large-diameter opening end 78, and is provided with a connecting portion 77 facing the large-diameter opening end 78. In the connecting portion 77, a first break portion 77A of the first resin material 74 injected from the gate portion 71 remains.

The edge portion 79 has an annular edge body 82 having a diameter corresponding to the large-diameter opening end 78 of the vibrating member body 81, and an edge body 82 connected to the outer peripheral edge 82A of the edge body 82. And an annular gasket portion 84 surrounding the gasket. In the gasket portion 84, a second break portion 84A of the second resin material 75 injected from the gate portion 72 remains.

The damper portion 83 is provided with a concave portion 83B along the outer peripheral portion 77B of the connecting portion 77 of the vibration member main body 81. In the damper portion 83, a third break portion 83A of the third resin material 76 injected from the gate portion 73 remains.

The speaker vibration member 85 is provided on the inner peripheral edge portion 82B of the edge main body 82 provided on the edge portion 79.
Are formed so as to overlap with a portion 78A near the large-diameter opening end 78 in the vibration member main body 81. That is, the speaker vibration member 85 is configured such that the portion 78A near the large-diameter opening end 78 of the vibration member main body 81 and the inner peripheral edge portion 82A of the edge main body 82 provided at the edge portion 79 are in a melt-adhered state. A joint is formed. Further, in the speaker vibration member 85, an outer peripheral portion 77 </ b> B of the connecting portion 77 of the vibration member main body 81 and an inner peripheral portion 83 </ b> C of the damper portion 83 form a mutual joining portion in which the inner peripheral portion 83 </ b> C adheres to the molten state.

Subsequently, the speaker vibration member 8 shown in FIG.
5, the connecting portion 77 provided on the vibration member main body 81
Is cut off together with the broken portion 77A of the first resin material 74 left in the connecting portion 77. Further, the break portion 84 of the second resin material 75 left in the gasket portion 84 of the edge portion 79 with respect to the speaker vibration member 85
A and a process of cutting off the broken portion 83A of the molding material 73 remaining in the damper portion 83 are performed. further,
As necessary, the trimming process is performed on the vibration member main body 81, the edge portion 79, and the damper portion 83. Accordingly, as shown in FIG. 9, a speaker vibration member 85 having a small-diameter opening end 80 in which the vibration member main body 81 faces the large-diameter opening end 78 is obtained.

Further, the speaker vibration member 85 is mounted on the frame structure 44 constituting the holding device shown in FIG. 1 and is subjected to a heating process and an annealing process in order to maintain an appropriate form. Since these heating and annealing processes are almost the same as those in the method of manufacturing the speaker vibrating member of the first embodiment described above, description thereof will be omitted.

As described above, according to the method of manufacturing the vibrating member for the speaker according to the second embodiment, the vibrating member main body and the edge portion, and the vibrating member main body and the damper portion are divided into three types without using an adhesive. By integrally molding from a resin material, the number of manufacturing steps can be reduced and simplified, so that production efficiency is improved. In addition, the vibration member main body and the edge portion, and the vibration member main body and the damper portion are integrally formed in a melt-adhered state without using an adhesive, so that the quality of the rigidity of the entire vibration system can be made uniform. it can.

Second Embodiment A speaker vibrating member 8 manufactured according to a method of manufacturing a speaker vibrating member 8 according to the second embodiment.
5 will be described with reference to FIGS. 18 and 19. The speaker vibration member 85 includes a vibration member main body 81, an edge part 79, a gasket part 84 located on the outer periphery of the edge part 79, and a damper part 83.

The vibrating member main body 81 is formed in a truncated conical cylindrical shape using a polypropylene resin material as a molding material, and has a large-diameter opening end 78 and a small-diameter opening 80 opposed to the large-diameter opening end 78. are doing. Then, the vibration member main body 81
Is connected to a joining portion 78A provided along the main surface of the large-diameter opening end portion 78 by overlapping a joining portion 82B provided on the back surface of the inner peripheral portion of the edge portion 79. Further, the joining portion 83C of the damper portion 83 is formed along the outer peripheral portion of the small-diameter opening portion 80.
Are connected.

The edge portion 79 is formed in a ring shape using an elastomer resin material as a molding material, and is provided along the edge portion main body 82 which is formed to bulge in a substantially circular arc, and along the inner peripheral back surface of the edge portion main body 82. It is composed of a joint 82B and a joint 82A provided along the outer periphery.

The gasket portion 84 is formed in a ring shape using an elastomer resin material as a molding material, and has an inner peripheral portion integrally connected to a joining portion 82 A provided along the outer peripheral portion of the edge portion 79. . And the gasket part 84
, A plurality of grooves 140 are radially provided on the annular bottom surface 114 at predetermined intervals. The groove 140 has a substantially V-shaped cross section as shown in detail A in FIG. That is, the annular bottom surface portion 114 of the gasket portion 84 is provided with the plurality of grooves 140 to prevent deformation due to distortion or the like.

The damper part 83 is formed in a disk shape using a nylon resin material as a molding material, and has a small-diameter opening 8
A circular groove 83B centered on the 0 axis is recessed.
As shown in FIG. 19, a plurality of arc-shaped slits 120 centering on the axis of the small-diameter opening 80 are provided in the bottom of the circular groove 83B. In the damper section 83, a plurality of arc-shaped slits 121 centering on the axis of the small-diameter opening 80 are provided along the outer circumference of the arc-shaped slit 120.

Further, a plurality of grooves 1 are radially formed in the damper portion 83 at predetermined intervals on the annular bottom surface portion 115 on the outer peripheral portion.
39 are provided respectively. Also, this groove 139
Is formed in a substantially V-shaped cross section, as shown in detail A in FIG. That is, the annular bottom surface portion 115 on the outer peripheral portion of the damper portion 83 is provided with the plurality of grooves 139, thereby suppressing deformation due to distortion or the like.

The speaker 103 using the speaker vibration member 85 configured as described above will be described with reference to FIG. The speaker 103 includes a vibration unit 133 that generates sound, a magnetic circuit unit 134 that generates vibration in the vibration unit 133, and a main unit 135 that houses the vibration unit 133 and the magnetic circuit unit 134. I have.

The vibrating section 133 includes a speaker vibrating member 85.
And the bobbin 1 joined to the speaker vibration member 85
27, and a cap 138 provided on the bobbin 127.
And a voice coil 132 wound around the bobbin 127. The bobbin 127 is formed in a cylindrical shape, and one side end is closed by a cap 138. Further, a voice coil 132 is wound around the bobbin 127 around the open side end. Both ends of the voice coil 132 are connected to a power source (not shown). The outer peripheral portion of the bobbin 127 at the side end closed by the cap 138 is joined to the speaker vibration member 85 along the inner peripheral portion of the small-diameter opening 80.

The magnetic circuit portion 134 includes a pole 131, a main magnet 128 provided on the pole 131, and a yoke 130 provided in contact with the main magnet 128.
And a shield magnet 131 provided at a position facing the pole 131. The pole 131 is formed in a disk shape, and has a columnar protrusion 131A integrally formed at the center of the main surface. The columnar projection 131A of the pole 131 is
7 is disposed in the hollow portion.

A main magnet 128 formed in an annular shape is provided on the main surface of the pole 131. Also, the pole 131 is in contact with the main magnet 128,
An annular yoke 130 is provided so as to surround the voice coil 132 of the vibrating section 133. Further, the pole 131 is provided with an annular shielding magnet 131 at a position facing the main magnet 128 with the pole 131 interposed therebetween. The shield magnet 131 serves to cancel the magnetism of the main magnet 128 so that the magnetism of the main magnet 128 does not leak outside the speaker 103.

The main body 135 includes a frame assembly 125 that supports the vibrating section 133 and a shield cover 126 that houses the magnetic circuit section 134. The frame assembly 125 is formed in a substantially frustoconical cylindrical shape, and has a large-diameter open end 1.
25A and a small-diameter opening end 125B opposed to the large-diameter opening end 125A. Frame structure 12
5, a first annular support portion 1 that supports the gasket portion 84 of the speaker vibration member 85 at the large-diameter opening end portion 125A.
The gasket portion 84 is bonded to the first annular support portion 136. Further, a second annular support portion 137 that supports the damper portion 83 of the speaker vibration member 85 is formed in the frame structure 125 at a middle position of the truncated cone-shaped inclined portion. The damper part 83 is bonded to the support part 137.

The shield cover 126 is formed in a cylindrical shape using iron as a material, and has one open end closed. The shield cover 126 accommodates the magnetic circuit portion 134, and has an open end joined to the small-diameter opening 125B of the frame assembly 125. Shield cover 126
Works to prevent the magnetism of the main magnet 128 from leaking outside.

The speaker 103 configured as described above
The plurality of grooves 140 are respectively provided in the gasket portion 84 of the speaker vibration member 85, so that the distortion of the gasket portion 84, which is the bonding surface with the frame structure 125, is suppressed. Further, in the speaker 103, since the plurality of grooves 139 are provided in the damper portion 83 of the speaker vibration member 85, distortion of the damper portion 83, which is an adhesive surface with the frame structure 125, is suppressed. For this reason,
In the speaker 103, the adhesive force between the speaker diaphragm 85 and the frame structure 125 is improved.

As described above, the speaker vibration member 85
The vibration member main body 81 and the edge portion 79, and the vibration member main body 81 and the damper portion 83 are formed without using an adhesive.
By joining them in a melt-adhered state, the joining state and the quality such as the rigidity of the entire vibration system become uniform, and the acoustic characteristics can be controlled accurately. Further, the speaker vibration member 85 is provided on the annular bottom surface portion 1 of the gasket portion 84.
The grooves 140 and 139 are provided radially on the outer base 14 and the annular bottom surface 115 on the outer periphery of the damper unit 83, so that deformation due to distortion or the like is suppressed. Therefore, the adhesive force between the speaker vibration member 85 and the frame structure 125 is improved.

[0086]

According to the method of manufacturing a vibration member for a speaker according to the present invention, for example, a vibration member body molded using an olefin resin material as a molding material, and a vibration material body molded using a styrene resin material, for example, are molded. Edge part
By taking a state of fusion adhesion of those mutual joints,
They are joined and integrated without using an adhesive to form a speaker vibration member. For this reason, the integration of the vibration member main body and the edge portion is performed with improved work efficiency, and the uniformity of the quality of the speaker vibration member obtained by the integration is achieved. By not using the vibration member, the speaker vibration member obtained by integrating the vibration member main body and the edge portion can easily control its acoustic characteristics.

Further, according to the method of manufacturing a speaker vibration member according to the present invention, the vibration member main body and the elastic support portion are
By taking a state of fusion adhesion of those mutual joints,
The speaker vibration member obtained by being integrated is placed in a state where it takes an appropriate form, and is approximately 50 ° C to 90 °.
Heat treatment is performed for maintaining the temperature within the temperature range up to C for a time within the time range of approximately 30 minutes to 60 minutes, and thereafter, it is naturally cooled, so that it is generated at an edge portion or the like of the speaker vibration member. Correction of distortion, deformation, and the like is easily performed, and a speaker vibration member that does not involve distortion, deformation, or the like in each part can be obtained.

According to the speaker vibration member of the present invention, the vibration member main body and the annular edge and / or damper supporting the large-diameter opening end and / or the small-diameter opening end of the vibration member main body. The parts are joined in a melt-adhered state without using an adhesive, so that the joining state and the quality of the rigidity of the entire vibration system and the like become uniform, and the acoustic characteristics can be accurately controlled. Furthermore, by providing grooves radially in the annular bottom surface of the outer peripheral portion of the elastic support portion, deformation of these annular bottom portions due to distortion or the like is suppressed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which a speaker vibration member is supported by a frame structure in a method for manufacturing a speaker vibration member according to the present invention.

FIG. 2 is a longitudinal sectional view showing a speaker vibration member formed by the method of manufacturing the speaker vibration member.

FIG. 3 is a longitudinal sectional view showing a speaker vibration member formed by the method of manufacturing the speaker vibration member.

FIG. 4 is a longitudinal sectional view showing a main part of the speaker vibration member formed by the method of manufacturing the speaker vibration member.

FIG. 5 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 6 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 7 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 8 is a longitudinal sectional view showing a speaker vibration member formed by the method of manufacturing the speaker vibration member.

FIG. 9 is a longitudinal sectional view showing a speaker vibration member formed by the method of manufacturing the speaker vibration member.

FIG. 10 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 11 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 12 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 13 is a longitudinal sectional view showing a molding die used in the method of manufacturing the speaker vibration member.

FIG. 14 is a longitudinal sectional view showing a speaker vibration member used for explaining a manufacturing process in a conventional method for manufacturing a speaker vibration member.

FIG. 15 is a longitudinal sectional view showing a speaker vibration member used for explaining a manufacturing process in a conventional method for manufacturing a speaker vibration member.

FIG. 16 is a longitudinal sectional view showing a speaker vibration member used for explaining a manufacturing process in a conventional method for manufacturing a speaker vibration member.

FIG. 17 is a longitudinal sectional view showing a speaker vibration member according to the present invention.

FIG. 18 is a longitudinal sectional view showing the speaker vibration member.

FIG. 19 is a rear plan view showing the speaker vibration member.

FIG. 20 is a longitudinal sectional view showing a speaker using the speaker vibration member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Molding die 22 Lower die 23 Upper die 24 Mold central part 25 Annular movable die part 26 Annular die outer peripheral part 27 Vibration member main body cavity 28 Edge part cavity 29 Interconnection part 30, 31 Gate part 33 First resin material 34 First 2 resin material 35 speaker vibration member 36 vibration member main body 37 edge portion (elastic support portion) 38 large-diameter open end portion 40 small-diameter open end portion 41 edge main body 42 gasket portion 44 frame structure 47 annular damper member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-45000 (JP, A) JP-A-2-894 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04R 7/02 B29C 45/14 H04R 7/18 H04R 7/20 H04R 31/00

Claims (19)

(57) [Claims] 1. A method of manufacturing a speaker vibration member comprising a truncated cone-shaped vibration member main body and a damper portion supporting a small-diameter opening end of the vibration member main body. Provide a mutual communicating part between the member body mold part and the damper part mold part having the damper part cavity, and use a molding die configured to combine the mold clamping and the mold opening freely. After injecting the first resin material to form the vibration member main body, a second resin material different from the first resin material is injected into a damper portion cavity of the damper portion mold portion clamped to the vibration member body mold portion. Then, the vibrating member main body formed of the first resin material and the damper portion formed of the second resin material are brought into a melt-adhered state at an interconnecting portion formed by the interconnecting portions. Integrated with the manufacturing method of the speaker vibration member characterized by integrally forming the vibration member speaker. 2. A speaker vibration member comprising: a vibrating member main body having a truncated conical cylindrical shape; and an edge portion supporting a large-diameter opening end and a damper portion supporting a small-diameter opening end of the vibration member main body. In the manufacturing method, while providing an interconnecting portion between the edge portion mold portion and the damper portion mold portion having the edge portion cavity and the damper portion cavity for the vibration member body mold portion having the vibration member body cavity, mold clamping, Using a molding die configured to freely open the mold, the first resin material is injected into the vibration member main body cavity to form the vibration member main body, and then the edge portion mold portion is clamped to the vibration member main body mold portion. A second resin material different from the first resin material is injected into the edge cavity and the damper cavity of the damper mold, and the vibrating member formed by the first resin material is used. And an edge portion and a damper portion formed of the second resin material are melted and adhered to each other at an interconnecting portion formed by the interconnecting portions to integrally form the speaker vibration member. A method for manufacturing a speaker vibration member. 3. A vibrating member main body mold having a vibrating member main body cavity, an edge mold having an edge cavity on one side and a damper mold having a damper cavity on the other side. After the first resin material is injected into the vibrating member main body cavity to form the vibrating member main body by using a molding die configured by combining the mold via the part and opening the mold freely, the mold is formed on the vibrating member main body mold portion. A second resin material is injected into the edge cavity of the clamped edge mold, and a third resin material different from the second resin material is injected into the damper cavity of the damper mold molded by the vibrating member body mold. Wherein the edge portion and the damper portion are integrated with the vibrating member main body at an interconnecting portion formed by the mutual communicating portion to integrally mold the speaker vibrating member. A method of manufacturing the speaker vibration member according to claim 2. 4. The molded speaker vibrating member is placed in an appropriate form, and maintained at a temperature within a temperature range of approximately 50 ° C. to 90 ° C. for approximately 30 minutes to 60 minutes. 4. The method for manufacturing a speaker vibration member according to claim 1, wherein a heat treatment is performed for elapse of a time within a time range, and the heat treatment is performed in a naturally cooled state. 5. The speaker according to claim 4, wherein the heat treatment and the natural cooling of the formed speaker vibration member are performed by attaching the speaker vibration member to a holding device that holds the speaker vibration member in an appropriate form. Of manufacturing a vibration member for use. 6. An outer peripheral edge side of an edge portion of the molded speaker vibration member is fixed and supported, and an end of the vibration member main body opposite to the mutual joint is supported via a damper member. The method for manufacturing a speaker vibration member according to claim 5, wherein a holding device constituted by a frame structure is used. 7. The molded speaker vibration member is substantially 50
5. The method for manufacturing a speaker vibration member according to claim 4, wherein the speaker vibration member is disposed in a constant temperature bath for maintaining the temperature in a temperature range of from 90C to 90C. 8. The resin material according to claim 4, wherein the first resin material is an olefin resin material and the second resin material is a styrene resin material.
A manufacturing method of the speaker vibration member according to the above. 9. The speaker vibration member according to claim 4, wherein a polypropylene resin material is used as the first resin material, and a polystyrene resin material is used as the second resin material. Method. 10. An olefin resin material is used for the first resin material, a styrene resin material is used for the second resin material, and a nylon resin material is used for the third resin material. 8. The method according to claim 3, wherein:
A manufacturing method of the speaker vibration member according to the above. 11. An olefin resin material is used for the first resin material, a styrene resin material is used for the second resin material, and an olefin resin material is used for the third resin material. The method for manufacturing a vibration member for a speaker according to claim 3, wherein: 12. A speaker vibration member including a truncated cone-shaped vibration member main body and an annular damper portion supporting a small-diameter opening end of the vibration member main body, wherein the vibration member main body and the damper portion are connected to each other. A vibrating member for a speaker, wherein the vibrating member is made of different resin materials, and the mutually joined portions of the vibrating member main body and the damper portion are integrally connected to each other in a melt-adhered state. 13. A speaker comprising: a vibrating member body having a truncated cone shape; an annular edge portion supporting a large-diameter opening end of the vibrating member body; and an annular damper portion supporting a small-diameter opening end. In the vibration member for use, the vibration member main body, the edge portion, and the damper portion are formed of different resin materials, and the mutual joining portion between the vibration member main body, the edge portion, and the damper portion is integrally formed in a melt-adhered state. A vibrating member for a speaker, wherein the vibrating member is provided in a row. 14. The vibration member for a speaker according to claim 12, wherein the damper portion and the edge portion are configured to have flexibility with respect to the vibration member main body. 15. A speaker vibration member according to claim 13, wherein said damper portion and said edge portion are provided with a predetermined number of grooves radially along an annular bottom surface portion of an outer peripheral portion. . 16. The speaker vibration according to claim 12, wherein the vibration member main body is formed of an olefin resin material, and the damper portion and the edge portion are formed of a styrene resin material. Element. 17. The vibration for a loudspeaker according to claim 12, wherein the vibration member main body is formed of a polypropylene resin material, and the damper portion and the edge portion are formed of a polystyrene resin material. Element. 18. The vibration member main body is formed of an olefin resin material, an edge portion is formed of a styrene resin material, and a damper portion is formed of a nylon resin material. Or 1
7. The vibration member for a speaker according to 6. 19. The vibration member main body is formed of an olefin-based resin material, the edge portion is formed of a styrene-based resin material, and the damper portion is formed of an olefin-based resin material. Or a vibration member for a speaker according to 16.