US 9,808,972 B2
Motor bobbin and method for manufacturing same
Shinji Naruse, Tokyo (JP); Tatsushi Fujimori, Tokyo (JP); Chihiro Kondo, Tokyo (JP); and Yasunori Tanaka, Tokyo (JP)
Assigned to DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD., Tokyo (JP)
Appl. No. 14/915,459
Filed by DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD., Tokyo (JP)
PCT Filed Jul. 24, 2014, PCT No. PCT/JP2014/069603
§ 371(c)(1), (2) Date Feb. 29, 2016,
PCT Pub. No. WO2015/033696, PCT Pub. Date Mar. 12, 2015.
Claims priority of application No. 2013-183219 (JP), filed on Sep. 4, 2013.
Prior Publication US 2016/0214291 A1, Jul. 28, 2016
Int. Cl. B29C 45/14 (2006.01); H01F 5/02 (2006.01); H02K 15/10 (2006.01); H02K 15/02 (2006.01); H01F 27/32 (2006.01); H01F 41/12 (2006.01); H02K 3/30 (2006.01); H02K 3/32 (2006.01); H02K 1/04 (2006.01); H02K 1/14 (2006.01); H02K 3/34 (2006.01); H02K 5/08 (2006.01); H02K 15/14 (2006.01); H02K 3/52 (2006.01); B29L 31/34 (2006.01)
CPC B29C 45/14639 (2013.01) [H01F 5/02 (2013.01); H01F 27/325 (2013.01); H01F 41/125 (2013.01); H02K 1/04 (2013.01); H02K 1/148 (2013.01); H02K 3/30 (2013.01); H02K 3/325 (2013.01); H02K 3/345 (2013.01); H02K 5/08 (2013.01); H02K 15/022 (2013.01); H02K 15/10 (2013.01); H02K 15/14 (2013.01); B29L 2031/34 (2013.01); H02K 3/522 (2013.01); H02K 2203/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for manufacturing a motor bobbin around which a coil is to be wound, the method comprising:
forming the motor bobbin by injection molding wherein an insulating sheet and a core member are arranged in a cavity of an injection mold; and
a resin is injected into the cavity,
wherein the motor bobbin comprises an insulating sheet and a molded resin article; and
wherein the motor bobbin is further formed to comprise a center body portion which is at least partially made of only the insulating sheet.