A low-noise worm gear reducer

Abstract

The invention relates to the technical field of speed reducers, in particular to a low-noise worm and gear speed reducer. The low-noise worm and gear speed reducer comprises a worm gear and a worm; the worm wheel shaft comprises an outer rod body, an inner rod core and an elastic gasket, and the two ends of the inner rod core extend out of the outer rod body; a plurality of first tooth-shaped structures are evenly distributed in the outer rod body, a second tooth-shaped structure is arranged outside the inner rod core, the elastic gasket extends from the middle to the two sides to form two side edges, first gaps are formed between the side edges and the first tooth-shaped structures, second gaps are formed between the roots of the two side edges and the second tooth-shaped structure, the first gap and the second gap are adjusted through relative movement between the outer rod body and the inner rod core, and one end of the inner rod core serves as an output shaft to be connected with the outside. According to the low-noise worm wheel and worm speed reducer, the worm wheel shaft is designed in a split mode, elastic buffering is conducted on impact between the tooth pieces of the worm wheel and the tooth pieces of the worm, and therefore the degree of noise can be reduced through buffering in the process that vibration is transmitted between the two tooth pieces, and the low-noise worm wheel and worm speed reducer is obtained.

Description

technical field [0001] The invention relates to the technical field of reducers, in particular to a low-noise worm gear reducer. Background technique [0002] Worm gear reducers are used in a variety of applications with motors, where the worm is driven by an auxiliary motor and engages on a worm gear that is coupled to the output shaft of the module. To compensate for gear backlash, and to limit parasitic noise, it is common practice to insert a spring between the gearbox housing and one of the bearing supports supporting the worm, designed to radially press the worm against the worm wheel teeth. [0003] However, during the working process, due to the vibration of the output shaft, the spring may move along the axis of the worm, and this movement will cause an impact between the worm gear and the teeth of the worm to a great extent, making the parasitic noise Be strengthened. [0004] In view of the above situation, the inventor hopes to create a low-noise worm gear red...

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Problems solved by technology

[0003] However, during the working process, due to the vibration of the output shaft, the spring may move along the axis of the worm, and this movement will cause an impact between the worm gear and the teeth of the worm to a great extent, making the parasitic noise strengthened

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