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Planetary gear device

A planetary gear, planetary technology, applied in the field of planetary gear devices

Pending Publication Date: 2021-12-17
NIDEC SHIMPO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to adequately lubricate the space between the needle rollers and the wheel carrier pins that generate strong contact pressure

Method used

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  • Planetary gear device
  • Planetary gear device
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ＞

[0019]

[0020] figure 1 It is a longitudinal sectional view of the planetary gear device 1 of the first embodiment. The planetary gear device 1 is a device that decelerates the rotational motion of the first rotational speed of the motor into a rotational motion and output of the second rotational speed lower than the first rotational speed. Planetary gear unit 1 is used, for example, various industrial equipment such as industrial robots or packaging machines. However, the planetary gear device 1 can also be used for other devices such as robots, auxiliary kits, unmanned trolleys.

[0021] like figure 1 As shown, the planetary gear device 1 of the present embodiment has one solar gear 10, a plurality of planetary gear 20, a planetary support portion 30, an internal gear 40, a housing 50, and an output shaft 60.

[0022] The solar gear 10 is a gear arranged along the central axis 91. The solar gear 10 is connected to a motor as a drive source via the input shaft 11. The input s...

no. 2 Embodiment approach ＞

[0053] Next, a second embodiment of the present invention will be described. In the following, different points from the first embodiment will be described centered with respect to the first embodiment, the same portions, description thereof will be omitted. Figure 4 1 is a partial longitudinal sectional view of the planetary gear device of the second embodiment.

[0054] Different grease planetary gear device 1 according to the present embodiment of the holding structure 80 of the first embodiment. like Figure 4 , The present embodiment grease holding portion 80 is provided on the outer circumferential surface of the groove of the wheel carrier pin 32.

[0055] The grease according to the present embodiment includes a first holding portion 80 and the second groove 83 groove 84. The first groove 83 is provided in the carrier pin 32 of the outer peripheral surface of the helical groove. The second groove 84 is provided in the carrier pin 32 of the outer circumferential surface of t...

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PUM

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Abstract

The invention provides a planetary gear device which includes a planetary gear, a carrier pin supporting the planetary gear, and a plurality of needle rollers. the plurality of roller pins are interposed between the carrier pin and the planetary gear. The carrier pin has a grease holding portion. The grease holding portion holds semisolid grease for lubricating the needle rollers.

Description

Technical field [0001] The present invention relates to a planetary gear device. Background technique [0002] In the past, a planetary gear device having a planetary gear device having a sun gear, a plurality of planet gears disposed around the solar gear and an internal gear surrounding a plurality of planetary gears. The planetary gear device is a device: the planetary gear rotates and is rotated by input to the rotational movement of the sun gear, and the mushroom movement of the planetary gear is output, thereby decelerating the rotational motion. For example, the planetary gear unit is described, for example, in Japanese Laid-Open Publication 2017-53461. [0003] Patent Document 1: Japanese Laid-Open 2017-53461 [0004] In the planetary gear unit of Japanese Laid-Open Patent Publication No. 2017-53461, a roller bearing composed of a plurality of rolls is used in the bearing of the planetary gear. Further, in the publication, the inner peripheral surface of the planetary gea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32F16H57/04F16H57/08
CPCF16H1/32F16H57/0464F16H57/0486F16H57/082
Inventor 奥村干太越智逸平
Owner NIDEC SHIMPO CORP
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