Fully-enclosed reduction gearbox assembly

Abstract

The invention discloses a fully-enclosed reduction gearbox assembly. The fully-enclosed reduction gearbox assembly comprises a reduction gearbox body, reduction gearbox covers, worm gears and worm shafts, wherein the worm gears and the worm shafts are arranged in the reduction gearbox body and the reduction gearbox covers; the worm gears are mutually engaged with the worm shafts; the reduction gearbox body is made of plastics; the reduction gearbox covers are manufactured by punching sheets; the reduction gearbox body has the two end faces which are perpendicular to the axis directions of theworm shafts; the rest parts, except for a pair of lead screw through holes, of the surrounding part which is positioned on the two end faces of the reduction gearbox body have all fully-enclosed structures; and the two reduction gearbox covers are arranged and are fixed to the two end faces, perpendicular to the axis directions of the worm shafts, of the reduction gearbox body by adopting fastening pieces and mutually contact each other in a sealing manner. According to the fully-enclosed reduction gearbox assembly disclosed by the invention, the reduction gearbox body is manufactured by adopting plastics, the wall thickness can be made to be very thin, the worm gears and the worm shafts can be coated in the reduction gearbox body, and the two reduction gearbox covers can cover the reduction gearbox body, so that dust and impurities can be prevented from entering the reduction gearbox, and abrasion of the worm gears and the worm shafts is prevented.

Description

technical field [0001] The invention relates to the technical field of transmission mechanisms, in particular to a fully enclosed reduction box assembly. Background technique [0002] The traditional HDM gearboxes on the market are composed of a semi-closed zinc alloy gearbox body and a gearbox cover. Due to the limitation of the size of the entire gearbox and the characteristics of the die-casting process, see figure 1 , the minimum wall thickness of the zinc alloy must not be less than 0.5mm, therefore, the reduction box 1 cannot be fully enclosed, so that the plastic worm 2 is semi-exposed (see figure 2 ). Since the reduction box cannot be fully enclosed, dust and debris can easily enter the reduction box and adhere to the meshing surface of the worm and the worm wheel. Over time, the wear of the worm wheel and the worm will increase, affecting the worm gear. and worm life. In addition, the weight of the existing reduction box made of zinc alloy die-casting is also re...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a fully enclosed reduction gearbox assembly for the problem that the existing zinc alloy reduction gearbox body and reduction gearbox cover cannot be fully enclosed, so that dust and sundries will not into the gearbox while being light in weight

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