| 摘要 |
PURPOSE:To provide more simple operation of carrying a frame and more accurate positioning thereof by drilling conveyance catch holes in the frame and connecting catches engaged in the catch holes, to a grip bar via a shaft and a bevel gear. CONSTITUTION:A plurality of conveyance catch holes 1c are drilled in a frame 1 and a catch 7 having a catch tip 7a is connected to a grip bar 11 via a shaft 8 and a bevel gear 16. When the grip bar 11 is pulled in the carrying direction of the frame 1, the shaft 8 is turned via the bevel gear 16 to the catch tip 7a fitted in one of the catch holes 1c in the frame 1. Further pull of the grip bar 11 makes a ball 19 to come out of a dent 20a so that the shafts 8 and 17 and the frame 1 are all slided together until restricted when the ball 19 falls in another dent 20b. The carrying service of the frame may be thus simply performed and the accuracy of the positioning thereof can be improved. |
