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Motor-equipped transmission and trolley driving unit

A drive unit and motor technology, applied in the direction of electric components, electrical components, transmissions, etc., can solve the problems of low noise characteristics, increase in the number of parts, and difficulty in miniaturization, etc., and achieve the effect of excellent noise characteristics

Active Publication Date: 2019-12-10
NIDEC SHIMPO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the reduction gear transmission of this publication, in addition to the double-layer structure of the wheel member and the housing member that extend axially on the inner side in the radial direction of the tire, there is also a device for supporting the wheel member so as to be rotatable relative to the housing member. Bearings, so it is necessary to ensure axial and radial dimensions, it is difficult to achieve miniaturization
In addition, the number of parts may increase, leading to an increase in the manufacturing cost of the device
In addition, in addition to tires and wheel components, the planetary rollers also revolve around the rotation center axis and rotate complicatedly, so there is a possibility that the noise reduction performance will be reduced.

Method used

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  • Motor-equipped transmission and trolley driving unit
  • Motor-equipped transmission and trolley driving unit
  • Motor-equipped transmission and trolley driving unit

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Experimental program
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no. 1 Embodiment approach ＞

[0020] Hereinafter, the configuration of the truck drive unit 1 according to the first embodiment of the present invention will be described. figure 1 It is a vertical sectional view of the trolley drive unit 1 of the first embodiment. figure 2 From figure 1 A cross-sectional view of the trolley drive unit 1 when viewed from the position A-A of .

[0021] The trolley drive unit 1 of the present invention is, for example, an unmanned transport trolley that moves a trolley frame 5 on which conveyed objects such as materials and parts are placed, in various places such as a factory production line, a hospital, and an office. Such as figure 1 As shown, the trolley drive unit 1 has a transmission with a motor, tires 4 and a trolley frame 5, wherein the transmission with a motor is obtained by connecting the motor 2 to the transmission. The trolley drive unit 1 transmits the rotational motion obtained from the electric motor 2 using a transmission while changing the speed, and r...

no. 2 Embodiment approach ＞

[0048] Next, a second embodiment of the present invention will be described. Figure 6 It is a longitudinal cross-sectional view of the trolley drive unit 1B of the second embodiment. In addition, the following description will focus on differences from the first embodiment, and redundant description of the same parts as the first embodiment will be omitted.

[0049] Such as Figure 6 As shown, the trolley drive unit 1B has a transmission with a motor, tires 4B, a trolley frame 5B, and wheels 7B. The transmission with a motor is obtained by connecting a motor 2B to a speed reducer 3B. The speed reducer 3B has an input portion 31B, a sun roller 32B, a plurality of planetary rollers 33B, a roller frame 34B, a block bearing 35B, a housing 36B, a support bearing 37B, a ring 38B, a first pressing member 39B, a second pressing member 40B, and ribs. The sun roller 32B, the plurality of planetary rollers 33B, the roller frame 34B, the block bearing 35B, the housing 36B, the support ...

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PUM

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Abstract

The present invention provides a motor-equipped transmission and a trolley driving unit. The motor-equipped transmission includes: a motor; and a transmission that transmits torque while changing thespeed of the rotational motion of the motor. The transmission has a housing, a stellar roller, a plurality of planetary rollers, a roller carrier, and a ring. The roller carrier supports the pluralityof planetary rollers via a first bearing so as to be capable of rotating the plurality of planetary rollers. The ring annularly expands around a central axis on the radial outer side of the planetaryrollers and is fixed to the housing. The plurality of planetary rollers are in contact with the ring. The roller carrier is fixed to a stationary portion of the motor. As the plurality of planetary rollers rotate, the ring and the housing rotate around the central axis at a changed speed.

Description

technical field [0001] The invention relates to a transmission with an electric motor and a trolley drive unit with a transmission with an electric motor. Background technique [0002] Conventionally, there are known unmanned transport carts that transport objects to be transported such as materials in various places such as production lines of factories, hospitals, and offices. The unmanned transport vehicle moves the vehicle by decelerating the rotation motion obtained from the motor using a speed reducer and increasing the output torque to rotate the tires. The speed reducer used for the conventional unmanned conveyance vehicle is described in Japanese Unexamined Patent Application Publication No. 2016-70285, for example. [0003] The reduction gear of JP-A-2016-70285 has sun rollers, planetary rollers, roller frame pins, rotating members, casing members, wheel members, and bearings. The sun roller is formed on the shaft of the electric motor. The planetary rollers are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/70F16H57/08H02K7/116
CPCF16H3/70F16H57/082H02K7/116
Inventor 冈村晖久夫井上仁
Owner NIDEC SHIMPO CORP