公开(公告)号：US4509354A

公开(公告)日：1985-04-09

申请号：US403017

申请日：1982-07-29

申请人： Akio Suzuki ,  Mitsuo Akiyama ,  Hideo Uzuhashi ,  Izumi Ochiai ,  Hitoshi Yamashita ,  Youji Sekine ,  Katsuo Matsui ,  Syuji Tomita

发明人： Akio Suzuki ,  Mitsuo Akiyama ,  Hideo Uzuhashi ,  Izumi Ochiai ,  Hitoshi Yamashita ,  Youji Sekine ,  Katsuo Matsui ,  Syuji Tomita

IPC分类号： F04D29/00 ,  B21D53/00 ,  B21D53/80 ,  F04D25/08

CPC分类号： B21D53/00 ,  B21D53/80 ,  Y10T29/496

摘要： A method of manufacturing a fan guard from a plate member wherein inward slits, each having at least a radial slit section are formed in a first section of the plate member located between a central section and a ring-like section radially outwardly spaced therefrom of the plate member such that the radial slit sections extend from the central section to the ring-like section in circumferentially spaced relation to each other. Radially outward slits, each having at least an arcuate slit section, are formed in a second section of the plate member located between the ring-like section and an outer peripheral section of the plate member such that the arcuate slit sections extend from the ring-like section to the outer peripheral section in circumferentially spaced relation to other. Portions each extending between the adjacent two radial slit sections are bent to form louvers. The central, first and ring-like sections are offset from the outer peripheral section while rotating the central, first and ring-like sections relative to the outer peripheral section, to twist portions extending between the adjacent two arcuate slit sections to form louvers.

摘要翻译： 一种从板构件制造风扇防护件的方法，其中在所述板构件的第一部分中形成有至少具有径向狭缝部分的向内狭缝，所述第一部分位于中心部分和径向向外与其间隔开的环状部分之间 板状构件，使得径向狭缝部分彼此沿周向间隔开地从中心部分延伸到环状部分。 在板状部件和板状部件的外周部之间的板状部件的第二部分形成有至少具有弓形狭缝部分的径向向外的狭缝，使得弧形狭缝部分从环形部分延伸， 与外周部分的圆周间隔关系。 在相邻的两个径向狭缝部分之间延伸的部分被弯曲以形成百叶窗。 中心，第一和环状部分相对于外围部分旋转中心，第一和环状部分，同时使外围部分偏移，从而在相邻的两个弧形狭缝部分之间延伸的扭转部分形成百叶窗。