| MITSUI HIGH-TEC, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120091846 | ROTOR CORE - There is provided a rotor core which increases the quality and reliability thereof by preventing the occurrence of a core separation of the rotor core. There is provided a rotor core including a plurality of substantially cylindrical core blocks which are stacked on each other; and a plurality of magnets, characterized in that a plurality of magnet holes extending in an axial direction are provided in the plurality of core blocks so as to extend over the plurality of core blocks in that the plurality of magnets are accommodated in each of the plurality of magnet accommodation holes and fixed therein with a resin, and in that an axial position of core block boundary planes where the plurality of core blocks are brought into abutment with each other and an axial position of magnet boundary planes where the plurality of magnets are brought into abutment with each other differ from each other. | 04-19-2012 |
| 20120086302 | STATOR CORE AND METHOD OF MANUFACTURING SAME - A stator core | 04-12-2012 |
| 20120058313 | METHOD FOR MANUFACTURING LAMINATED CORE AND LAMINATED CORE - A method for manufacturing a laminated core is provided that makes positions of boundary parts of laminated blocks and improves an efficiency of a welding operation of the blocks. The above-described object is achieved by the method of manufacturing the laminated core | 03-08-2012 |
| 20120019093 | LAMINATED CORE - A laminated core | 01-26-2012 |
| 20110272793 | LEAD FRAME, SEMICONDUCTOR APPARATUS USING THIS LEAD FRAME, INTERMEDIATE PRODUCT THEREOF AND MANUFACTURING METHOD THEREOF - In a lead frame for a semiconductor apparatus 10, including plural terminals 13, one portions of the terminals 13 being sealed with a resin, a resin-sealed portion 16 of the terminal 13 has a polygonal columnar shape that is pentagonal or more or a deformed columnar shape having at least one notch or groove part extending vertically in a periphery. This resin-sealed portion 16 is formed by etching processing or press processing, and an exposed portion 18 of lower half of the terminal 13 is formed by the etching processing. | 11-10-2011 |
| 20110201159 | SEMICONDUCTOR PACKAGE AND MANUFACTURING METHOD THEREOF - A semiconductor package | 08-18-2011 |
| 20110179633 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A method comprising: a first process of placing a laminated rotor core in a preheating device to preheat the laminated core; a second process of removing the preheated laminated core from the preheating device and disposing the laminated core between upper and lower dies of a resin sealing apparatus; a third process of pressing the laminated core by the upper and lower dies and liquefying resin material in resin reservoir pots by heating; and a fourth process of ejecting the liquefied resin material from the pots into the magnet insertion holes by plungers inserted and moving vertically in the pots and thermally curing the resin material. The method improves efficiency of resin sealing the permanent magnets in the laminated core. | 07-28-2011 |
| 20110154650 | METHOD FOR MANUFACTURING LAMINATED CORE - A method for manufacturing a laminated core, comprising: (1) blanking a rotor core sheet | 06-30-2011 |
| 20110127876 | LAMINATED STATOR CORE - A laminated stator core | 06-02-2011 |
| 20110115126 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A laminated rotor core ( | 05-19-2011 |
| 20100327690 | LAMINATED STATOR CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated stator core | 12-30-2010 |
| 20100270888 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core ( | 10-28-2010 |
| 20100218660 | DIE ASSEMBLY - With a view to preventing the generation of a punching failure or damage to punches or a die which is attributed to inclination or sideways movement of a press ram when a punching operation is performed, while preventing damage to the punches which is attributed to sideways movement or inclination of a stripper plate when no punching operation is performed and facilitating maintenance work such as adjustment of punches for registration with the stripper plate, there is provided a die assembly comprising an upper die including a punch and a lower die including a die wherein the upper die mounted on a press ram is connected to the lower die via a die-set guide so as to move backwards and forwards and a material for punching which is pressed against the lower die by a stripper plate is punched through reciprocation of the upper die relative to the lower die, the die assembly being characterized by comprising a guide rod made up of a lower rod which is fixedly placed on the stripper plate which guides the punch for engagement with the lower die and an upper rod which is placed removably on the stripper plate for engagement with the upper die, and in that when punching the material for punching, the upper rod is removed from the stripper plate so as to put the upper plate and the stripper plate in a disconnected state, so that the stripper plate is made free to move backwards and forwards relative to the lower die by the lower rod, while when the material for punching is not punched, the upper rod is attached to the stripper plate so as to put the upper die and the stripper plate in a connected state by the upper rod, so that the stripper plate is held on to the upper die. | 09-02-2010 |
| 20100213785 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core ( | 08-26-2010 |
| 20100090560 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core | 04-15-2010 |
| 20100083486 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A method comprising: a first process of placing a laminated rotor core in a preheating device to preheat the laminated core; a second process of removing the preheated laminated core from the preheating device and disposing the laminated core between upper and lower dies of a resin sealing apparatus; a third process of pressing the laminated core by the upper and lower dies and liquefying resin material in resin reservoir pots by heating; and a fourth process of ejecting the liquefied resin material from the pots into the magnet insertion holes by plungers inserted and moving vertically in the pots and thermally curing the resin material. The method improves efficiency of resin sealing the permanent magnets in the laminated core. | 04-08-2010 |
| 20100043202 | METHOD OF PRODUCING VARIANT-SHAPED LAMINATED CORE AND VARIANT-SHAPED LAMINATED CORE PRODUCED BY SAME - A method of producing a laminated variant-shaped core | 02-25-2010 |
| 20090189309 | Method of resin sealing permanent magnets in laminated rotor core - A laminated rotor core ( | 07-30-2009 |
| 20090146519 | LAMINATED ROTOR CORE AND METHOD FOR MANUFACTURING THE SAME - A stamping step of forming a plurality of band-shaped core sheets ( | 06-11-2009 |
| 20090045689 | ROTOR AND METHOD OF MANUFACTURING THE SAME AND ELECTRIC VEHICLE - A rotor includes: a rotor core fixedly attached to a rotational shaft and having a magnet-inserted hole portion; a magnet inserted into the magnet-inserted hole portion; and a resin portion injected into the magnet-inserted hole portion. The rotor core is constructed by axially stacking a plurality of electromagnetic steel sheets. The electromagnetic steel sheets include: an electromagnetic steel sheet having the magnet-inserted hole portion and a weight-reducing-purpose hole portion provided separately from the magnet-inserted hole portion; and an electromagnetic steel sheet located on at least one axial end of the rotor core and having a portion covering the hole portion formed in the electromagnetic steel sheet. | 02-19-2009 |
| 20090026873 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core formed by reliably and firmly connecting laminated core segments ( | 01-29-2009 |
| 20080276446 | Method of Resin Sealing Permanent Magnets in Laminated Rotor Core - A method comprising: a first process of placing a laminated rotor core ( | 11-13-2008 |
