阅读说明：本技术 减速器及润滑方法 (Speed reducer and lubricating method ) 是由 杜宜东 杨思维 张燕 苏新生 蔡智杰 尹伟杰 于 2019-03-13 设计创作，主要内容包括：本发明提供了一种减速器及润滑方法。减速器包括太阳齿轮、与太阳齿轮啮合的行星齿轮以及转动连接于行星齿轮的输出轴构件,太阳齿轮具有沿其轴向设置的内腔,内腔具有第一开口和第二开口,输出轴构件转动连接于第一开口的端面。其中,润滑油由第二开口进入内腔,随着太阳齿轮的转动,润滑油沿内腔的侧壁向第一开口移动,直至从第一开口的端面甩出。本发明提供的减速器具有结构简单且润滑效果佳的优点。(The invention provides a speed reducer and a lubricating method. The speed reducer comprises a sun gear, a planetary gear meshed with the sun gear and an output shaft component which is connected to the planetary gear in a rotating mode, the sun gear is provided with an inner cavity arranged along the axial direction of the sun gear, the inner cavity is provided with a first opening and a second opening, and the output shaft component is connected to the end face of the first opening in a rotating mode. Lubricating oil enters the inner cavity from the second opening, and along with the rotation of the sun gear, the lubricating oil moves towards the first opening along the side wall of the inner cavity until being thrown out of the end face of the first opening. The speed reducer provided by the invention has the advantages of simple structure and good lubricating effect.)

1. A speed reducer comprising a sun gear, a planetary gear meshing with the sun gear, and an output shaft member rotatably connected to the planetary gear, wherein the sun gear has an inner cavity provided along an axial direction thereof, the inner cavity having a first opening and a second opening, the output shaft member being rotatably connected to an end surface of the first opening;

lubricating oil enters the inner cavity from the second opening, and along with the rotation of the sun gear, the lubricating oil moves towards the first opening along the side wall of the inner cavity until being thrown out of the end face of the first opening.

2. A speed reducer according to claim 1, wherein a friction reducing element is provided between the output shaft member and an end face of the first opening.

3. A decelerator according to claim 1 or 2, wherein the direction of incidence of the lubricating oil is at an acute angle to the end face of the second opening.

4. A decelerator according to claim 3, wherein the acute angle is 30 ° to 60 °.

5. A decelerator according to claim 1 or claim 2, wherein the portion of the sun gear adjacent the second opening is of a necked configuration.

6. A reducer according to claim 1 or claim 2, in which the side walls of the internal cavity of the sun gear are of inverted conical shape.

7. A reducer according to claim 1 or claim 2, in which the sun gear is of unequal wall thickness.

8. A reducer according to claim 1 or claim 2, in which the output shaft member is a rotor shaft.

9. A reducer according to claim 1 or claim 2, in which the reducer includes a fixed ring gear located outside the planet gears, the fixed ring gear meshing with the planet gears.

10. A method of lubricating a speed reducer according to any one of claims 1 to 9, wherein the speed reducer has a structure in which lubricating oil enters the cavity through the second opening, and the lubricating oil moves along the side wall of the cavity toward the first opening until being thrown off the end face of the first opening as the sun gear rotates.