MANUFACTURING METHOD FOR STIFFENED DIAPHRAGM AND THE MANUFACTURED DIAPHRAGM USING SAME

• US 20160088394A1
• Filed: 09/19/2014
• Published: 03/24/2016
• Est. Priority Date: 09/19/2014
• Status: Active Grant

• Current Assignee: Merry Electronics Company Limited
• Original Assignee: Merry Electronics Company Limited
• Inventors: YANG, Chen-Mao, LIN, Ching-Lan, CHEN, Po-Yu, HSIEH, Yi-Lin, LAI, Feng-Min
• Granted Patent: US 9,402,134 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04R 31/003 for diaphragms or their outer suspension
• CPC Class Codes: H04R 7/02 characterised by the construction
• CPC Class Codes: H04R 7/06 comprising a plurality of sections or layers

Abstract

A stiffened diaphragm manufacturing method and the manufactured diaphragm using same are provided. The manufacturing method includes the steps of: applying a hot glue layer to a side of a stiffened plate; putting a base layer on the hot glue layer, and then heating and adhering the base layer and the stiffened plate together; and performing a pressing process on the base layer and the stiffened plate to form a diaphragm having a central portion and a surround portion. The stiffened plate is coated uniformly with the hot glue layer and then put on the base layer to undergo heating and adhesion; hence, an oversupply or undersupply of a glue will be unlikely to happen. Furthermore, the manufacturing process is simple and attains high-strength adhesion between the stiffened plate and the base layer.

Claims

1. A stiffened diaphragm manufacturing method, comprising the steps of:

a) applying a hot glue layer to a side of a stiffened plate;

b) putting the stiffened plate on a base layer, and then heating and adhering the base layer and the stiffened plate together; and

c) performing a pressing process on the base layer and the stiffened plate to form a diaphragm.

2. The stiffened diaphragm manufacturing method of claim 1, wherein step a) further comprises applying a stiffened glue layer to an opposing side of the stiffened plate having the hot glue layer.

3. The stiffened diaphragm manufacturing method of claim 2, wherein the stiffened glue layer is made of one of a thermosetting plastic, a UV curable plastic, a mixture of a thermosetting plastic and carbon nanotube or nano ceramic powder, and a mixture of a UV curable plastic and carbon nanotube or nano ceramic powder.

4. The stiffened diaphragm manufacturing method of claim 2, wherein step a) further comprises coating the stiffened glue layer by roll coating.

5. The stiffened diaphragm manufacturing method of claim 1, wherein step a) further comprises coating the hot glue layer by roll coating.

6. The stiffened diaphragm manufacturing method of claim 1, wherein, in step b), the base layer and the stiffened plate are fixed in place with a positioning jig before being heated and adhered together.

7. The stiffened diaphragm manufacturing method of claim 1, wherein, in step c), the stiffened plate and the base layer are fixed in place with a positioning jig before undergoing a pressing process.

8. The stiffened diaphragm manufacturing method of claim 1, wherein, in step c), the pressing process is performed by one of pneumatic pressing and hot pressing.

9. The stiffened diaphragm manufacturing method of claim 2, wherein the stiffened plate and the base layer are made of a same material.

10. The stiffened diaphragm manufacturing method of claim 1, wherein the stiffened plate is round.

11. A stiffened diaphragm, comprising:

a base layer having a central portion and a surround portion surrounding and adjoining the central portion; and

a stiffened plate having a top side coated with a stiffened glue layer and a bottom side coated with a hot glue layer so as for the stiffened plate to adhere to the central portion of base layer.

12. The stiffened diaphragm of claim 11, wherein the stiffened glue layer is made of one of a thermosetting plastic, a UV curable plastic, a mixture of a thermosetting plastic and carbon nanotube or nano ceramic powder, and a mixture of a UV curable plastic and carbon nanotube or nano ceramic powder.