WO2015087750A1 - Engrenage réducteur - Google Patents

Engrenage réducteur Download PDF

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Publication number
WO2015087750A1
WO2015087750A1 PCT/JP2014/081949 JP2014081949W WO2015087750A1 WO 2015087750 A1 WO2015087750 A1 WO 2015087750A1 JP 2014081949 W JP2014081949 W JP 2014081949W WO 2015087750 A1 WO2015087750 A1 WO 2015087750A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
input shaft
planetary gear
input
planetary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/081949
Other languages
English (en)
Japanese (ja)
Inventor
高田　声一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of WO2015087750A1 publication Critical patent/WO2015087750A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/46—Systems consisting of a plurality of gear trains each with orbital gears, i.e. systems having three or more central gears

Definitions

  • the present invention relates to a speed reducer that decelerates rotation of an input shaft by a planetary gear mechanism and transmits it to an output shaft.
  • a plurality of first planetary gears that mesh with both the first sun gear provided on the outer periphery of the input shaft and the first internal gear arranged on the outer side in the radial direction are used as a reduction gear with a high reduction rate.
  • a plurality of second planetary gears that mesh with both a first planetary gear mechanism that is rotatably supported by a first carrier, a second sun gear that is provided on the outer periphery of the input shaft, and a second internal gear that is disposed radially outward of the second planetary gear.
  • a second planetary gear mechanism that is rotatably supported by a second carrier, the first internal gear and the second internal gear are integrated, the first carrier is fixed to a fixing member, and the second carrier is output.
  • the first planetary gear and the second internal gear are integrally rotated in the direction opposite to the input shaft by the rotation of the first planetary gear, and the second planetary gear is rotated Proposed to transmit to the output shaft via two carriers. And are (for example, see below Patent Documents 1 and 2.).
  • an object of the present invention is to provide a reduction gear having a high reduction rate and easy to design and manufacture.
  • a speed reducer is arranged on a first input shaft, a first sun gear provided on an outer periphery of the first input shaft, and a radially outer side of the first sun gear.
  • a first planetary gear comprising a first internal gear, a plurality of first planetary gears that mesh with both the first sun gear and the first internal gear, and a first carrier that rotatably supports the first planetary gears.
  • a second input shaft rotatably passing through the first input shaft, a second sun gear provided on an outer periphery of a protruding portion of the second input shaft protruding from one end of the first input shaft, A second internal gear that is arranged radially outside the two sun gears and rotates integrally with the first internal gear; a plurality of second planetary gears that mesh with both the second sun gear and the second internal gear; A second planetary gear mechanism comprising a second carrier that supports each second planetary gear in a rotatable manner is provided. The first secure the carrier to the fixing member, and connected to an output shaft of the second carrier, than it was configured to the different rotational speed of the rotating the first input shaft and the second input shaft is inputted.
  • a first transmission gear is provided on the outer periphery of the first input shaft
  • a second transmission gear having a gear specification different from that of the first transmission gear is provided on the outer periphery of the protruding portion of the second input shaft protruding from the end, and provided on the outer periphery of the drive shaft so as to mesh with each of the transmission gears.
  • a configuration in which rotation is input to the input shafts from the two input gears via the transmission gears can be employed. If it does in this way, a reduction rate can be changed easily only by changing the gear specification of one input gear which meshes with one of the 1st transmission gear and the 2nd transmission gear. Further, by engaging each transmission gear with the input gear, it is possible to reduce the speed at the front stage of the speed reducer, thereby suppressing the number of rotations of each part in each planetary gear mechanism and suppressing heat generation and extending the life.
  • the speed reducer according to the present invention is configured so that rotations having different rotational speeds are input to the first input shaft of the first planetary gear mechanism and the second input shaft of the second planetary gear mechanism, so that both planets are rotated. Even if the gear specifications are not different in the gear mechanism, a reduction rate corresponding to the difference in the rotation speed between the first input shaft and the second input shaft can be obtained. By appropriately setting the gear ratio, a high reduction rate can be obtained, and the gear specifications of both planetary gear mechanisms can be made the same, so that the gear design and parts manufacture of each planetary gear mechanism can be performed efficiently.
  • a first planetary gear mechanism 11 and a second planetary gear mechanism 21 are arranged in the axial direction inside a covered cylindrical housing (fixing member) 1.
  • a lid 3 through which the output shaft 2 passes is fitted on the inner periphery of the opening side of the housing 1.
  • the first planetary gear mechanism 11 includes a cylindrical first input shaft 12, a first sun gear 13 provided on the outer periphery of the first input shaft 12, and a first sun gear 13 disposed radially outside the first sun gear 13. 1 internal gear 14, a plurality of first planetary gears 15 meshing with both the first sun gear 13 and the first internal gear 14, and a support shaft 16a passed through the center of each first planetary gear 15,
  • the first planetary gear 15 includes a first carrier 16 that supports the first planetary gear 15 so as to be capable of rotating.
  • the first input shaft 12 of the first planetary gear mechanism 11 is formed integrally with the first sun gear 13, and the first carrier 16 is formed integrally with the lid portion 1 a of the housing 1.
  • the first input shaft 12 passes through the center of the first carrier 16 and is rotatably supported by the first carrier 16, and the first transmission gear 4 is fitted to the outer periphery of the protruding portion from the first carrier 16. It is fixed.
  • the first input shaft 12 and the first sun gear 13, the first carrier 16 and the housing lid 1a may be formed separately and fixedly attached.
  • the second planetary gear mechanism 21 includes a second input shaft 22 that rotatably penetrates the first input shaft 12 of the first planetary gear mechanism 11 and a second input shaft 22 that protrudes from one end of the first input shaft 12.
  • a second sun gear 23 provided on the outer periphery of the projecting portion, a second internal gear 24 that is disposed on the radially outer side of the second sun gear 23 and formed integrally with the first internal gear 14, and the second sun gear 23
  • a plurality of second planetary gears 25 that mesh with both the second internal gears 24 and a support shaft 26a that passes through the center of each second planetary gear 25, and supports each second planetary gear 25 so that it can rotate.
  • the second carrier 26 is included.
  • the second input shaft 22 of the second planetary gear mechanism 21 is formed integrally with the second sun gear 23, and the second carrier 26 is formed integrally with the output shaft 2.
  • the second transmission gear 5 is fitted and fixed to the outer periphery of a protruding portion protruding from the other end of the first input shaft 12.
  • the output shaft 2 is rotatably supported by a lid 3 fitted on the inner periphery of the housing 1.
  • the protrusion part 22a from the 2nd sun gear 23 of the 2nd input shaft 22 is rotatably inserted in the engagement hole 27 provided in the center of the inner surface of the output shaft 2 and the 2nd carrier 26, and the 1st
  • the first input shaft 12, the second input shaft 22, and the output shaft 2 rotate concentrically and smoothly.
  • the second input shaft 22 and the second sun gear 23 may be formed separately and fixedly attached, and the second carrier 26 and the output shaft 2 may be formed separately and rotate integrally. You may connect.
  • the gear specifications of the respective parts of the first planetary gear mechanism 11 and the second planetary gear mechanism 21 are the same, and the gear specifications of the first transmission gear 4 and the second transmission gear 5 are different.
  • the first transmission gear 4 and the second transmission gear 5 mesh with the first input gear 8 and the second input gear 9 that are fitted and fixed to the outer periphery of the main shaft (drive shaft) 7 of the drive motor 6, respectively. Thereby, the rotation is transmitted from the drive motor 6 to the input shafts 12 and 22 via the input gears 8 and 9 and the transmission gears 4 and 5, and the first input shaft 12 and the second input shaft 22 are rotated differently. A number of rotations are entered simultaneously.
  • This speed reducer has the above-described configuration, and a speed reduction rate corresponding to the difference in rotation speed between the first input shaft 12 and the second input shaft 22 can be obtained. By setting to, a very high deceleration rate can be obtained.
  • the gear specifications of the planetary gear mechanisms 11 and 21 are the same, the gear design and parts manufacture of each planetary gear mechanism 11 and 21 can be performed efficiently.
  • the reduction rate can be easily changed by simply changing the gear specification of one of the first transmission gear 4 and the second transmission gear 5 and one input gear (8 or 9) meshing with the first transmission gear 4.
  • the rotation direction of the output shaft 2 with respect to the shafts 12 and 22 can also be changed.
  • Second carrier 1 Housing (fixing member) 2 Output shaft 4 First transmission gear 5 Second transmission gear 6 Drive motor 7 Main shaft (drive shaft) 8 First input gear 9 Second input gear 11 First planetary gear mechanism 12 First input shaft 13 First sun gear 14 First internal gear 15 First planetary gear 16 First carrier 21 Second planetary gear mechanism 22 Second input Shaft 23 Second sun gear 24 Second internal gear 25 Second planetary gear 26 Second carrier

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne un engrenage réducteur qui présente un rapport de réduction élevé et qui peut être conçu et fabriqué aisément. Le second arbre d'entrée (22) d'un second mécanisme d'engrenage planétaire (21) est conçu de façon à s'étendre de manière rotative dans le premier arbre d'entrée (12) d'un premier mécanisme d'engrenage planétaire (11). Le premier engrenage interne (14) et le second engrenage interne (24) des deux mécanismes d'engrenage planétaire (11, 21) sont formés d'un seul tenant, le premier support (16) du premier mécanisme d'engrenage planétaire (11) est fixé à un corps (1), le second support (26) du second mécanisme d'engrenage planétaire (21) est raccordé à un arbre de sortie (2) et des rotations de différentes vitesses sont introduites dans le premier arbre d'entrée (12) et dans le second arbre d'entrée (22).
PCT/JP2014/081949 2013-12-12 2014-12-03 Engrenage réducteur Ceased WO2015087750A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013256737A JP2015113922A (ja) 2013-12-12 2013-12-12 減速機
JP2013-256737 2013-12-12

Publications (1)

Publication Number Publication Date
WO2015087750A1 true WO2015087750A1 (fr) 2015-06-18

Family

ID=53371058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/081949 Ceased WO2015087750A1 (fr) 2013-12-12 2014-12-03 Engrenage réducteur

Country Status (2)

Country Link
JP (1) JP2015113922A (fr)
WO (1) WO2015087750A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159707A (zh) * 2018-02-16 2019-08-23 本田技研工业株式会社 车轴驱动装置
PL441596A1 (pl) * 2022-06-29 2024-01-03 Filip Antończyk Przekładnia zębata czterostopniowa

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017009060A (ja) * 2015-06-23 2017-01-12 マテックス株式会社 遊星歯車装置及び該遊星歯車装置を用いた無段変速装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088247A (ja) * 1983-10-18 1985-05-18 Toshiba Corp 回転減速装置
JPS6250190B2 (fr) * 1985-02-28 1987-10-23 Takashi Takahashi
US6547689B2 (en) * 2000-03-03 2003-04-15 George Paul Baker, Jr. Angular motion translator
US7845445B2 (en) * 2007-03-29 2010-12-07 Arvinmeritor Technology, Llc Electric powertrain system with planetary drive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088247A (ja) * 1983-10-18 1985-05-18 Toshiba Corp 回転減速装置
JPS6250190B2 (fr) * 1985-02-28 1987-10-23 Takashi Takahashi
US6547689B2 (en) * 2000-03-03 2003-04-15 George Paul Baker, Jr. Angular motion translator
US7845445B2 (en) * 2007-03-29 2010-12-07 Arvinmeritor Technology, Llc Electric powertrain system with planetary drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110159707A (zh) * 2018-02-16 2019-08-23 本田技研工业株式会社 车轴驱动装置
CN110159707B (zh) * 2018-02-16 2021-03-05 本田技研工业株式会社 车轴驱动装置
PL441596A1 (pl) * 2022-06-29 2024-01-03 Filip Antończyk Przekładnia zębata czterostopniowa

Also Published As

Publication number Publication date
JP2015113922A (ja) 2015-06-22

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