Draw ring type tripper used for optoelectronic module

Abstract

A pull-tab type unlocking device for photoelectric modules belonging to the technical field of optical communications comprises a pull-tab, a left pressing block and a right pressing block fixed on amodule shell, a first rotating shaft groove and a second rotating shaft groove formed on the pressing block, a locking holder formed at a front end of a braking plate, a lock catch on the locking holder, a pair of braking plate rotating shafts extended from two central sides, a third rotating shaft groove and a cam cavity formed below a back end, a left torsional spring and a right torsional spring mounted on these two braking plate rotating shafts. Wherein, these two braking plate rotating shafts are rotationally pivoted into a pair of braking plate rotating shaft grooves. The pull-tab is composed of a pull-tab, a pair of lateral arms, rotating shafts and cam wheels. The rotating shaft is pivoted into the first, the second and the third rotating shaft groove. The cam wheel matches the cam cavity. The present invention has the advantages of compact structure, fewer parts, easy mounting and detachment, high action reliability, more simple unlocking and easy parts processing and production. The pull-tab is provided with a self-return function and suitable for more compact caging equipments.

Description

technical field [0001] The invention relates to an unlocking device for a hot-swappable photoelectric module in the field of optical communication, in particular to a ring-pull unlocking device for a photoelectric module. Background technique [0002] At present, the unlocking device of the hot-swappable photoelectric module mainly has two structures of a push-pull type or a ring-pull type. Among them, the push-pull structure uses a push block to lift up the locking shrapnel of the metal shielding cage to unlock the module. The problem with this structure is that due to the increasingly high EMI requirements of modern communication equipment, the metal shielding cage and equipment The panels must fit very tightly, that is to say, the movable gap of the lock spring of the metal shielding cage is extremely small. Therefore, the above-mentioned structure of pushing the lock spring of the metal shield cage by the push block cannot be used on new equipment. The ring-pull structu...

AI Technical Summary

Problems solved by technology

Among them, the push-pull structure uses a push block to lift up the locking shrapnel of the metal shielding cage to unlock the module. The problem with this structure is that due to the increasingly high EMI requirements of modern communication equipment, the metal shielding cage and equipment The panels must fit very tightly, that is to say, the movable gap of the lock shrapnel of the metal shielding cage is extremely small. Therefore, the above-mentioned structure of pushing the metal shielding cage lock shrapnel by the push block cannot be used on new equipment.

This ring-pull unlocking device can be widely used in modern communication equipment with closely arranged metal shielding cages, but the following problems have been exposed in the actual use process: First, due to the small structure and complex shape of this product, the brake pads The return spring adopts a pressure spring with an outer diameter of only 0.9mm and a length of 8mm. Its elasticity is poor and it is easy to bend off. After the brake pad is pushed forward under the action of the pull ring, it cannot be reset, resulting in the bump being unlocked. Afterwards, it cannot be raised and reset and loses the locking function; secondly, because the bump and the brake pad are made separately, the up and down movement of the bump is controlled by the brake pad, and sometimes the head of the brake pad and the position of the bump The sliders are stuck to each other and the unlocking function fails; moreover, the spring acting on the bump is also a compression spring with an outer diameter of only 0.9mm, which also makes the bump unable to reset or insufficient reset, resulting in failure to lock or The lock is not secure; in addition, the pull ring is movably connected to the outside of the module shell through a pair of pins. Because the pins are not easy to process, it is not easy to install on the pull ring, which increases the difficulty of processing the parts; and, there are many parts and installation , The unloading is cumbersome, which will affect the reliability of the action

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