Production method of an electroacoustic transducer diaphragm, electroacoustic transducer diaphragm, and an electroacoustic transducer

Abstract

A production method for an electroacoustic transducer diaphragm includes producing an adhered sheet by adhering a sheet member on a surface of a wooden sheet having a thickness of from 0.01 mm to 3 mm, and the sheet member being made of a material different from the wooden sheet, immersing the adhered sheet into one of a solution including 0.01-1 wt % of a penetrating agent and a solution including 0.01-1 wt % of penetrating agent and 0.01-20 wt % of a wetting agent, and molding the adhered sheet obtained by the immersing step so that the immersed adhered sheet has a predetermined shape of the electroacoustic transducer diaphragm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

In the accompanying drawings:

FIG. 1 is a flow chart showing a production method of an electroacoustic transducer diaphragm according to the present invention;

FIGS. 2A to 2F are explanatory diagrams of the production method according to a first embodiment of the present invention;

FIGS. 3A to 3F are explanatory diagrams of the production method according to a second embodiment of the present invention;

FIGS. 4A to 4F are explanatory diagrams of the production method according to a third embodiment of the present invention;

FIGS. 5A to 5F are explanatory diagrams of the production method according to a fourth embodiment of the present invention;

FIGS. 6A to 6F are explanatory diagrams of the production method according to a fifth embodiment of the present invention;

FIGS. 7A to 7F are explanatory diagrams of the production method according to a sixth embodiment of the present invention;

FIG. 8 is a cross sectional view of a speaker using an electroacoustic transducer diaphragm according to the present invention;

FIG. 9A is a cross sectional view of an electroacoustic transducer diaphragm for an earphone or a headphone according to the present invention;

FIG. 9B is a cross sectional view of a headphone using an electroacoustic transducer diaphragm according to the present invention; and

FIG. 9C is a cross sectional view of an earphone using an electroacoustic transducer diaphragm according to the present invention.

Claims

1. A production method for an electroacoustic transducer diaphragm, comprising: a producing step of producing an adhered sheet by adhering a sheet member on a surface of a wooden sheet having a thickness of from 0.01 mm to 3 mm, and the sheet member being made of a material different from the wooden sheet;an immersing step of immersing the adhered sheet into one of a solution including 0.01-1 wt % of a penetrating agent and a solution including 0.01-1 wt % of penetrating agent and 0.01-20 wt % of a wetting agent; anda first hot press molding step of molding an adhered sheet obtained by the immersing step so that the immersed adhered sheet has a predetermined shape of the electroacoustic transducer diaphragm.

2. A production method for an electroacoustic transducer diaphragm, comprising: a producing step of producing an adhered sheet by adhering a sheet member on a surface of a wooden sheet having a thickness of from 0.01 mm to 1 mm, and the sheet member being made of a material different from the wooden sheet;an immersing step of immersing the adhered sheet into one of a solution including 0.01-1 wt % of a penetrating agent and a solution including 0.01-1 wt % of penetrating agent and 0.01-10 wt % of a wetting agent; anda first hot press molding step of molding an adhered sheet obtained by the immersing step so that the immersed adhered sheet has a predetermined shape of the electroacoustic transducer diaphragm.

3. The production method of claim 1, further comprising: an impregnating step of impregnating a molded product obtained by the first hot press molding step with a thermosetting resin; anda second hot press molding step of molding an impregnated product obtained by the impregnating step.

4. The production method of claim 1, wherein the sheet member is a non-woven sheet or a paper.

5. The production method of claim 1, wherein the sheet member is a woven sheet.

6. An electroacoustic transducer diaphragm, comprising: an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet; anda constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent;wherein the adhered sheet is hot press molded into a predetermined shape of an electroacoustic transducer diaphragm.

7. An electroacoustic transducer diaphragm, comprising: an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet;a first constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent; anda second constitunent material of a thermosetting resin provided at least on one surface of the adhered sheet,wherein the adhered sheet is formed into a predetermined shape of an electroacoustic transducer diaphragm.

8. The electroacoustic transducer diaphragm of claim 6, wherein the sheet member is a non-woven sheet or a paper.

9. The electroacoustic transducer diaphragm of claim 6, wherein the sheet member is a woven sheet.

10. An electroacoustic transducer, comprising: an electroacoustic transducer diaphragm including; an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet; anda constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent;

11. An electroacoustic transducer, comprising: an electroacoustic transducer diaphragm including: an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet;a first constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent; anda second constitunent material of a thermosetting resin provided at least on one surface of the adhered sheet,

12. The electroacoustic transducer of claim 10, wherein the sheet member is a non-woven sheet or a paper.

13. The electroacoustic transducer diaphragm of claim 10, wherein the sheet member is a woven sheet.