| 摘要 |
A device for clamping two axially telescoping rods in a selected telescoped position, includes a case (4) supported at the end of the outside one (1) of the two rods (1, 2) and the case (4) encloses an annular bush (3) wrapped around the inside one (2) of the two rods (1, 2). One side of the bush (3) is open for defining an axial gap. Terminal flanges (3a) extend away from the bush (3) at opposite sides of the gap. A shaft extends from the second of the terminal portions, through the first of the terminal portions and then outside the case (4). A two-position cam (6) is journaled to the shaft and is shaped to engage the exterior of the case (4). As the cam (6) is moved between its two positions, it selectively draws the terminal portion flanges (3a) together or permits them to move part for selectively clamping or releasing the bush (3) on the rod (2). A spring normally biases the terminal portion flanges (3a) apart. A nut (12) screw-threaded received on the shaft (7) is adjustable along the shaft for defining the initial position of the second terminal portion with respect to the first terminal portion. |
