Optical fiber laser retaining thread type QBH connector

Abstract

The invention relates to the technical field of optical fiber connectors, and discloses an optical fiber laser retaining thread type QBH connector which comprises a locking device, the locking device comprises a QBH locking seat, a QBH locking ring, a retaining tooth ring and a QBH pressing thread ring, three kidney-shaped holes are evenly formed in the side wall of the QBH locking seat, a pin hole is formed in the side wall of the QBH locking seat, the QBH locking ring is installed on the QBH locking seat, the QBH locking ring is inserted into an inner cavity of the retaining gear ring, and a retaining pin hole is formed in the side wall of the QBH locking seat. According to the scheme, the locking device is small in size, light in weight, simple in machining process, low in machining precision requirement, high in stability in the using process, not prone to loosening, of a thread type structure, and the QBH sizes of different laser manufacturers or different batches of lasers are distinguished or the processing errors are completely absorbed; and the retaining mechanism ensures stability and no looseness in the using process, and the structure is simpler, lighter and thinner.

Description

technical field [0001] The invention belongs to the technical field of optical fiber joints, in particular to an optical fiber laser anti-retraction screw type QBH joint. Background technique [0002] The 1000-6000 watt fiber lasers used in the market basically adopt QBH interface, but there are problems such as large volume, high weight, complicated processing technology, high processing precision, poor stability during use, and easy loosening, which greatly limit the laser. applications on handheld devices. At present, the use of fiber lasers on handheld devices is growing rapidly, and the QBH interface is large in size and low in reliability, which seriously affects the lightweight and reliability of handheld devices. [0003] There are many problems with the existing interface, such as the difficulty of machining the existing parts, the existing QBH optical fiber head locking device has designed as many as 9 grooves and arc-shaped holes to match the locking and position...

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a fiber laser anti-retraction screw type QBH joint, which effectively solves many existing interface problems, such as the difficulty of machining the existing parts, The existing QBH optical fiber head locking device has designed as many as 9 grooves and arc-shaped holes in order to match the locking and positioning of the optical fiber head. Such parts can only be processed by turning-milling machining center equipment, and mass production is very fast. It is difficult to guarantee the processing accuracy, which increases the manufacturing cost, and the installation method is relatively complicated. The connection of the existing QBH optical fiber head requires four steps. Once the steps are wrong, it cannot be installed, which increases the difficulty of use and increases the training time. It cannot be taken out after being locked. After the middle ring of the existing QBH fiber optic head locking device is locked, if the cylindrical pin is stuck into the end of the fiber optic head guide groove, the outer ring does not have enough stroke and force to withdraw the cylindrical pin, causing the fiber optic head to be stuck in the lock. The locking device cannot be taken out. The positioning of the QBH fiber optic head is through the structural conical fit between the outer tapered surface on the cylinder and the inner tapered surface of the locking device. Therefore, the tighter the tapered surface fits, the more accurate and firm the positioning will be.

However, in the existing structure, the maximum pressing gap of the cylindrical pin is only 0.3mm. At the same time, due to the limitation of the diameter of the outer ring, the rotational torque is relatively small, and the user cannot tighten it forcefully, causing the tapered surface to not fit completely, making the optical fiber head loose and affecting problem of use

Images