| 摘要 |
<p>Staple gun for driving staples into a workpiece, which gun includes a frame, arranged in which is a driver, which can be conveyed in an up and downward movement and which in the downward movement (N) executes a drive stroke in which the staple is driven and which can be conveyed by an activation member in the upward movement (U) to a highest height h, in which the activation member releases the driver for the execution of the drive stroke, and which driver is coupled to a first end of an elongated elastic member, which is tensioned when the driver is conveyed in the upward movement for execution of the drive stroke, and which is connected at a second end to a bearing pin assigned to the frame as well as a first breakpoint pin placed between the bearing pin and the driver at a first distance (a) from the bearing pin and around which the elastic member is bent and tensioned when the driver is moved in the upward movement, and a second breakpoint pin placed between the driver and the first breakpoint pin at a second distance (b) from the bearing pin and arranged so that it can be moved between a first position, in which it does not engage with the elastic member when this is moved by the driver in the upward movement, and a second position, in which it engages with the elastic member when the driver is moved in the upward movement and tensions the member, wherein the first distance (a) at which the first breakpoint pin is placed from the bearing pin is related to (h) as 1.6-2.0:1.</p> |
