| 摘要 |
<p>A tightening device with limited torque, provided with a screw whose maneuvering head has a cap and accommodates a disengaging element. The disengaging element comprises thin elastic washers (30) which are stacked up in the form of open rings. Each washer comprises a flexible arm (31) with a free end for disengagement (31a) and an anchoring arm and is anchored such that it is joined to a flared section of the screw-spindle (10) and is engaged in a disengageable manner by radially cancelling the end (31a) against the cap(20). Preferably, the flexible arm (31) is applied against an effort-limiting surface (S) which is, for example, provided at the end of the anchoring arm (32) of the washer.</p> |
