| 摘要 |
The present invention provides a locking mechanism which does not unlock a locked fixing state inadvertently and can lock the fixing state reliably, and a clamping head device and a fastening clamp with the locking mechanism. In a rotation control body 30 for locking the fastening fixing state, a locking gear 34 whose rotation is fixed, and a nut gear 32 which is fixed in the axial direction and the rotation direction fixed are respectively provided with circumferential surface gears 325, 348 and ratchets 326, 346, wherein the circumferential surface gears 325 and 348 are meshed in axial direction, and the ratchets 326 and 346 are meshed in radial direction. In addition, the locking mechanism also comprises a cam ball 33 and a guide groove 314 which are used for switching between the fastening locking state in which the circumferential surface gears 325, 348 and the ratchets 326, 346 are meshed and the unlocking state in which the meshes of the circumferential surface gears 325, 348 and the ratchets 326, 346 are unlocked. |
