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transmission

A technology of transmission and speed, applied in the direction of transmission, gear transmission, belt/chain/gear, etc., which can solve the problems of decreased productivity and difficult processing

Active Publication Date: 2022-08-05
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to adjust the tooth width of external teeth or internal teeth, which may lead to a decrease in productivity

Method used

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Embodiment Construction

[0015] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in this application, the direction parallel to the central axis of the transmission is referred to as “axial”, the direction perpendicular to the central axis is referred to as “radial”, and the direction along the circular arc centered on the central axis is referred to as Make "circumferential". In addition, in this application, the shape and positional relationship of each part will be described with the axial direction as the vertical direction and the first carrier member side of the second rotation part as the upper side with respect to the first rotation part. However, the definition of the up-down direction does not limit the direction in which the transmission according to the present application is used. In addition, the above-mentioned "parallel direction" also includes a substantially parallel direction. In addition, the a...

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Abstract

The present invention provides a transmission. The first rotating portion of the eccentric oscillating transmission rotates about the center axis. The first eccentric body rotates together with the first rotating portion, and the distance from the central axis to the outer peripheral surface of the first eccentric body varies depending on the position in the circumferential direction. The first bearing is arranged on the outer peripheral surface of the first eccentric body. The first external gear has a first through hole penetrating in the axial direction, and is provided on the outer peripheral surface of the first bearing. The internal gear has a cylindrical shape surrounding the central axis in the circumferential direction, and is arranged on the radially outer side of the first external gear. The wheel carrier pin is inserted into the first through hole and has a cylindrical shape extending in the axial direction. The second rotating part is fixed to a plurality of wheel carrier pins, and rotates about the central axis. The number of teeth of the first external gear is different from the number of teeth of the internal gear. The external teeth at the position farthest from the center axis of the first external gear mesh with the internal gear. The tooth tip of each of the external teeth of the first external gear has a curved surface that is convexly curved from both ends to the center in the axial direction.

Description

technical field [0001] The present invention relates to transmissions. Background technique [0002] An eccentric swing deceleration mechanism is described in Japanese Laid-Open Publication No. 2014-16019. The speed reduction mechanism of this publication is included in a motor rotational force transmission device that transmits a motor rotational force of an electric motor to a pair of rear wheels in a four-wheel drive vehicle. The speed reduction mechanism includes an internal gear and an external gear arranged inside the internal gear. The external gear oscillates along the inner surface of the internal gear while meshing with the internal gear. Such an eccentric swing type reduction mechanism is small and can obtain a high reduction ratio. [0003] However, in recent years, there has been a high demand for small robots that work collaboratively with humans. Furthermore, it has been proposed to use an actuator combining the above-described eccentric swing type reducer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/32
CPCF16H1/32
Inventor 竹本心路徐文德
Owner NIDEC CORP