Japanese

• 
• 
• 
• 
• 

Edgewise Coild Development Division

■ Project Outline

Our department are developing the original Edgewise Coil with square line.

SAN-EI developed the original rolling method for winding,it makes that able to Mass-produce the epochal heat-resistans coil.(Patented in 1998 in JAPAN &USA)

We’ve wrestle quickly the application to a hybrid car lengthening rapidly in late years, and we succeed in development of square coil which we used with square line.(Applicated the Patent in 2005)It enable that the application for the mortor winding(Applicated the Patent in 2002). There will be these for big positioning on our business development as application to electricity connection and car connection in our bissiness development.

In this Division, we perform coil-related, besides, research and development about a resin note type and an insulation film, also we interchange with research of a public institute and each major company a lot, it ontributes to development of products for the next generation greatly.

　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　>> Edgewise Coil Product Information

◆ How it began 　Received requests from textile manufacturers to develop coils that are heat resistant and resilient to vibrations.Witnessed the increasing demand for round shaped/square shaped coils necessary for hybrid vehicles.

◆ Brief details of our operations 　To develop components that are essential to becoming a product. Patented our rolling method and square type winding method long before our competitors. We continue to develop various applied 　 products.

◆ Features of Edgewise coils

For our rolling method, we incorporate ceramic insulation for excellent heat resistance. They are widely used in drawing machines of textile machineries. Our square shaped coils can be found in hybrid and electric vehicles which have been gaining popularity in the recent years.

◆ n-house Technology We have developed many types of winding methods and products that cannot be accomplished by our competitors, such as our patented square coil winding, round wire rolling method, and ceramic insulated heat resistant motor coils.

　　　■ Timeline of our Technology & Production (Edgewise Coil Development)

1996	September	Applied for patent for our rolling method
1998		Commence vibration testing with 20kw prototype
1998	November	Rolling method patented in Japan
1999	July	Rolling method patented in USA
2000	April	Insulation material and method established
2001	November	Used for testing in our domestic plants
		Heater coil completed
2002	August	Applied for patent with Sumitomo for motor coils
	September	Established mass production of core
		Established ceramic baking method
		Established ceramic coating method
		Begin manufacturing for export
2003	March	Officially begin mass production (400-600 units per month)
	September	Heater coil mass production assembly completed
2004	June	Transferred production to Electrical Device Division
	September	Reactors for hybrid vehicles
	December	Square type coil winding method established
2005	March	Applied for patent for square type coil winding method
2006	June	Motor coils for hybrid vehicles
	November	Specialty coil for government/public institute usage completed
		Increased production to 500 units per month
2008	May	Reactor accepted

SAN-EI electronics Toppage