| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverter stack which can prevent bolt members from falling off when a fan block is separated from the inverter body. <P>SOLUTION: The inverter stack comprises an inverter body 30 and a fan block 40 disposed on the top of the inverter body 30 via engaging means. The engaging means includes bolt members 60 and engagement holes 41. The bolt members 60 are screwed to nuts 612 fixed to a sheet metal member 61 in such a manner that their trunk parts 60a penetrate through long holes 331 from the front side and the trunk parts 60a penetrating through the long holes 331 further penetrate through through-holes 611 formed in the sheet metal member 61 and larger than the long holes 331. The long holes 331 are formed on the top front face of the inverter body 30, and their crosswise direction is their longer direction. The bolt members 60 have fall-off prevention nuts 62 fixed to their tip parts 60b. The engagement holes 41 are formed on the lower front face of the fan block 40. Each of the engagement holes 41 is formed in such a manner that a detach/attach hole 411 larger in outside diameter than head parts 60c of the bolt members 60 and a fastening hole 412 smaller in outside diameter than the head parts 60c are contiguous from one to another. <P>COPYRIGHT: (C)2013,JPO&INPIT |
