| 摘要 |
<p>A connecting element consists of a second guide sleeve (151), with a first lateral longitudinal slot (152), which is-at the front surface thereof-provided with a first insert (153) through which, a second threaded bolt (141) extends. Said bolt is provided, at one end thereof, with a first head (142) and with a threaded part at a second end. Said threaded part is screwed in an axial threaded aperture (164) formed in a first guide insert (161). Said guide insert (161) has a threaded part (162) and a part (163) that is positioned in a second guide sleeve (151) and is provided with a radial aperture (165) for a first threaded pin to be inserted thereinto. External end of the pin is situated in the first lateral longitudinal slot (152) and whose inner end is screwed in a threaded aperture (143) of the threaded part of the second threaded bolt (141). A compression spring (172) is introduced into the second threaded bolt (141) between the parts (163) and the first insert (153). First and second sleeve inserts (121, 130) are positioned upon the second threaded bolt (141) between the first head (142) and second guide sleeve (151).</p> |
