| 摘要 |
PURPOSE:To prevent the slip-off of a civer with the simple constitution and facilitate mounting and demounting of the cover in installation and inspection by allowing a groove part on a guide piece which is projectingly installed on the reverse surface of the cover and an elastic body to be engaged with a pin which is projectingly installed onto the side wall of a case body. CONSTITUTION:A pin 9 is projectingly onto the inside wall of a case body 2, and a guide piece 10 for regulating the position of a cover 6, fitted with the pin 9, is projectingly installed onto the reverse surface of the cover 6 covering the opened port part of the case body 2. Further, a holding part 18a which is engaged with the pin 9 and closely attaches the cover 6 onto the case body 2 and an elastic body (spring steel wire, etc.) 18 having a receiving part (curved part) 18c which is engaged with the pin 9 and prevents slip-off are projectingly installed onto the reverse surface of the cover 6. With this constitution, the pin 9 is engaged and supported onto the innermost part of the guide plate 10 by only pressing the elastic body 18 of the cover 6 onto the pin 9, and the cover 6 is fixed. Further, when the cover 6 is demounted, the pin 9 is pulled out to the position where the pin 9 is engaged with the receiving part 18c of the elastic body 18, and then the elastic body 18 is demounted from the pin 9 by a screw driver, etc. |
