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Motor with reduction gear

A technology of reducer and motor, applied in the field of motor, can solve problems such as difficult assembly

Inactive Publication Date: 2012-07-18
MABUCHI MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When assembling the worm wheel, cushioning member, and output plate (outer hub and inner hub), there is a problem that assembly is difficult because the cushioning member is simultaneously compressed and expanded (press-fitted) from the very beginning.

Method used

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  • Motor with reduction gear
  • Motor with reduction gear
  • Motor with reduction gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Hereinafter, the present invention will be described based on examples. figure 1 It is a longitudinal sectional view of a motor with a speed reducer constructed based on the present invention. This motor with a speed reducer has a structure in which a motor part and a speed reducer part are integrally assembled. In the motor unit, a magnet is attached to an inner peripheral surface of a bottomed hollow cylindrical case made of a metal material. The opening of the box is fitted with a resin end cover and closed by this. A rotor pole and a commutator are provided on the rotating shaft, which are composed of laminated cores wound with winding wires, to form a motor rotor. In addition, a pair of input terminals connected to a pair of brushes contacting the commutator protrude outside the motor through the end cover for electrical connection. One end of the rotating shaft is supported by a first bearing provided at the bottom center of a bottomed hollow cylindrical motor...

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PUM

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Abstract

A worm wheel includes an outer ring having, on its outer circumference side, a tooth portion for engagement with a worm; an inner ring which surrounds the output shaft; a connecting bottom portion connecting the outer ring and the inner ring together; and a plurality of ribs provided at constant intervals. Each of the ribs is tapered in an axial direction from the connecting bottom portion side toward the buffer member side such that the rib decreases in width toward its distal end. A buffer member is composed of a plurality of arcuate blocks connected together to form an annular shape as a whole. An output plate has a plurality of buffer member compression portions integrally formed at constant intervals on a back face of a disk-like portion. Each of the buffer member compression portionsis tapered in an axial direction from the disk-like portion side toward the buffer member side such that the compression portion decreases in width toward its distal end.

Description

technical field [0001] The present invention relates to a motor with a speed reducer in which a worm wheel of a speed reducer unit and an output plate to which an output shaft is fixed are fixed via a buffer member. Background technique [0002] In the motor with a reducer, the motor part and the reducer part are integrally assembled. In the speed reducer unit, a worm connected to a rotating shaft, a worm wheel meshed with it, and the like are housed in the gear box. When the motor of the motor section is driven, the rotating shaft rotates, and this rotation decelerates the rotation of the worm wheel via the worm, which in turn rotates the output plate, and then the output shaft fixed to the output plate, via the buffer member. The buffer member accommodated in the worm wheel is preliminarily elastically deformed when accommodated in the worm wheel in order to prevent rattling in the rotational direction of the output shaft, so that elastic force is accumulated. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/16F16D3/68F16H55/22H02K7/116
CPCF16H55/22F16D3/68F16H55/14F16H1/16H02K7/1166
Inventor 佐谷务
Owner MABUCHI MOTOR