WO2017014077A1 - Transmission et structure de lubrification de transmission - Google Patents

Transmission et structure de lubrification de transmission Download PDF

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Publication number
WO2017014077A1
WO2017014077A1 PCT/JP2016/070315 JP2016070315W WO2017014077A1 WO 2017014077 A1 WO2017014077 A1 WO 2017014077A1 JP 2016070315 W JP2016070315 W JP 2016070315W WO 2017014077 A1 WO2017014077 A1 WO 2017014077A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
shaft
thrust washer
inner ring
lubricating oil
Prior art date
Application number
PCT/JP2016/070315
Other languages
English (en)
Japanese (ja)
Inventor
卓弘 鶴岡
Original Assignee
いすゞ自動車株式会社
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 いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN201680042475.4A priority Critical patent/CN107850204B/zh
Publication of WO2017014077A1 publication Critical patent/WO2017014077A1/fr

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating

Definitions

  • the present invention relates to a transmission lubrication structure and a transmission, and more particularly to a thrust washer disposed between a transmission gear and a bearing.
  • lubricating oil is supplied to each part in the transmission case in order to reduce friction generated in a plurality of transmission gear trains and bearings.
  • the lubricating oil is discharged in a radial direction from a lubricating oil passage formed inside the main shaft, and the lubricating oil is adjacent to a radial oil groove formed on a side surface of the thrust washer.
  • a technique for supplying a bearing is known (for example, see Patent Document 1).
  • the disclosed technology aims to prevent the seizure of the bearing by effectively suppressing the scattering of the lubricating oil.
  • the disclosed technique is a lubricating structure for a transmission in which a transmission gear is provided on a shaft having a lubricating oil passage capable of discharging lubricating oil in a radial direction, and an inner ring and a transmission that are provided on the outer periphery of the shaft so as not to rotate.
  • a bearing part having an outer ring that is non-rotatably provided in the machine case, and a roller that is slidably interposed between the inner ring and the outer ring, and is inserted through the shaft, and the bearing part and the speed change
  • an annular thrust washer interposed between the gear and an annular protrusion that protrudes in the axial direction toward the roller on the side surface of the thrust washer.
  • the annular protrusion may extend between the inner ring and the outer ring, and the protruding end may be adjacent to the side surface of the roller.
  • a discharge port of the lubricating oil passage is provided on the outer peripheral surface of the shaft facing the transmission gear, and a shaft oil groove extending in the axial direction from the discharge port toward the bearing portion is recessed in the outer peripheral surface of the shaft.
  • the thrust washer includes a through oil groove that passes through the inner ring portion in the axial direction, and a radial direction that extends in a radial direction from the downstream end of the through oil groove toward the shelf portion on a side surface facing the bearing portion.
  • the oil groove may be recessed.
  • An annular oil groove may be provided on a side surface of the thrust washer facing the transmission gear, with the side surface notched obliquely toward the inner ring portion.
  • the side surface of the thrust washer that faces the bearing portion may be provided with an annular inclined surface portion in which the side surface is cut obliquely toward the outer ring portion.
  • the disclosed technology is a transmission, which is attached to a transmission case, a shaft having a lubricating oil passage for discharging lubricating oil in a radial direction, a transmission gear provided on the shaft, and an outer periphery of the shaft.
  • the thrust washer includes an annular protrusion that protrudes in the axial direction from the side surface toward the roller.
  • FIG. 1 is a schematic cross-sectional view showing a part of a transmission according to an embodiment of the present invention.
  • FIG. 2 is a schematic perspective view showing a part of the main shaft of the transmission according to the embodiment of the present invention.
  • FIG. 3 is a schematic front view of a thrust washer according to an embodiment of the present invention viewed from the cylindrical roller bearing side. 4 is a cross-sectional view taken along line AA in FIG.
  • FIG. 5 is a view for explaining the flow of the lubricating oil in the lubricating structure of the transmission according to the embodiment of the present invention.
  • the main shaft 10 of the transmission 1 is rotatably supported by the transmission case 2 via a cylindrical roller bearing 30.
  • a plurality of transmission gears 15 and 16 are rotatably supported on the main shaft 10 via needle bearings 3 and 4.
  • the main shaft 10 has an axial oil passage 11 extending in the axial direction for flowing the lubricating oil, and extending radially from the axial oil passage 11 toward the outer peripheral surface of the main shaft 10 so as to surround the lubricating oil.
  • Radial oil passages 12 and 13 for discharging from the opening 12A (see FIG. 2) of the surface are formed. These radial oil passages 12 and 13 are provided, for example, at positions facing the respective inner peripheral surfaces (needle bearings 3 and 4) of the transmission gears 15 and 16.
  • the outer peripheral surface of the main shaft 10 is formed with a shaft outer peripheral oil groove 14 (see FIGS. 1 and 2) extending in an axial direction from an opening 12A (see FIG. 2) toward a thrust washer 40 described later in detail.
  • the synchromesh mechanism 20 has a synchromesh 21 whose inner peripheral teeth are spline-fitted with the spline teeth 10A (see FIG. 2) of the main shaft 10, and is always meshed with the outer peripheral teeth of the synchromesh hub 21 and a shift fork (not shown). And a synchro sleeve 22 that can be selectively engaged with the dog gear 15A of the transmission gear 15 and a synchronizer ring 23 that is provided between the sync hub 21 and the dog gear 15A and applies a synchronous load.
  • the cylindrical roller bearing 30 includes an outer ring portion 31, an inner ring portion 32, and a cylindrical roller 33 that is slidably sandwiched between the outer ring portion 31 and the inner ring portion 32.
  • the outer ring portion 31 is provided with a pair of flange portions 31A and 31B projecting radially inward at both axial ends of the inner peripheral surface thereof.
  • the outer ring portion 31 is press-fitted and fixed in a mounting hole of the transmission case 2.
  • the inner ring portion 32 includes two parts, an annular first collar portion 32A and an annular second collar portion 32B having a substantially L-shaped cross section.
  • the inner ring portion 32 is fitted to the outer peripheral portion 10B (see FIG. 2) of the main shaft 10 at the inner periphery thereof.
  • the thrust washer 40 is formed in a substantially annular shape when viewed from the front, and is slidably inserted into the main shaft 10 and interposed between the transmission gear 15 and the cylindrical roller bearing 30.
  • the thrust washer 50 between the transmission gear 16 and the cylindrical roller bearing 30 is configured in the same manner as the thrust washer 40, detailed description of the thrust washer 50 will be omitted below.
  • the thrust washer 40 has an annular shelf (annular protrusion) 44 that protrudes at a predetermined height in the axial direction from the first side surface portion 40A on the cylindrical roller bearing 30 side. Projected.
  • the shelf portion 44 extends between the outer ring portion 31 and the inner ring portion 32 of the cylindrical roller bearing 30, and a small clearance is secured between the protruding end and the side surface of the cylindrical roller 33. ing.
  • first side surface portion 40A of the thrust washer 40 a plurality of (four in the illustrated example) radial oil grooves 45 extending in the radial direction from the inner ring portion 41 toward the shelf portion 44 are recessed. Further, the first side surface portion 40A is provided with an annular inclined surface portion 48 formed by obliquely cutting the outer ring portion 42 toward the first side surface portion 40A.
  • the inner ring portion 41 of the thrust washer 40 has a plurality of recesses (4 in the illustrated example) that are recessed radially outward at a predetermined depth and that penetrate the thrust washer 40 in the axial direction and communicate with the radial oil groove 45.
  • the main through-groove 46 is recessed.
  • the second side surface portion 40B of the thrust washer 40 on the transmission gear 15 side has an annular oil groove 47 (see FIG. 4) formed by obliquely cutting the second side surface portion 40B toward the inner ring portion 41. Is provided.
  • the lubricating oil flows through the axial oil passage 11 and the radial oil passage 12 of the main shaft 10 and is discharged from the opening 12A (see FIG. 2). It flows in the groove 14 toward the thrust washer 40.
  • the lubricating oil that has reached the downstream end of the shaft outer circumferential groove 14 circulates in the annular oil groove 47 and reaches the radial oil groove 45 through the through oil passage 46 as indicated by a broken arrow X2.
  • the lubricating oil that has reached the radial oil groove 45 flows radially outward by centrifugal force, hits the shelf 44, and is guided along the inner peripheral surface of the shelf 44, while the outer ring portion of the cylindrical roller bearing 30. 31 is guided between the inner ring portion 32 and the inner ring portion 32.
  • the lubricating oil supplied from the radial oil groove 45 is surely received and guided by the shelf portion 44 without splashing radially outward, so that the lubricating oil is effectively introduced toward the cylindrical roller bearing 30. It is configured to be. Therefore, according to the lubrication structure of the present embodiment, it is possible to effectively ensure the amount of lubricating oil supplied to the cylindrical roller bearing 30, and in particular, the first collar portion 32A and the cylindrical roller 33 that are likely to be seized. It is possible to reliably prevent the oil film from being cut.
  • part of the lubricating oil scraped up into the transmission case 2 by the transmission gear 15 or the like falls to the thrust washer 40 and is sunk by the annular inclined surface portion 48. 44 is effectively collected on the outer peripheral surface. Further, the lubricating oil is caused to flow along the outer peripheral surface of the shelf portion 44 and is effectively introduced between the outer ring portion 31 and the inner ring portion 32 of the cylindrical roller bearing 30. Therefore, according to the lubrication structure of the present embodiment, it is possible to effectively increase the supply amount of the lubricating oil to the cylindrical roller bearing 30, and it is possible to reliably prevent seizure of the cylindrical roller bearing 30.
  • the shaft is not limited to the main shaft 10 and can be widely applied to other shafts in which a lubricating oil passage is formed, such as a counter shaft.
  • the bearing is not limited to the cylindrical roller bearing 30 and can be widely applied to other bearings such as a ball bearing.
  • the lubrication structure and transmission for a transmission according to the present disclosure have the effect of effectively suppressing splashing of lubricating oil and preventing seizure of bearings, and provide a highly reliable transmission. This is useful in that it becomes possible.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

La présente invention concerne une structure de lubrification pour une transmission 1 dans laquelle des engrenages de changement de vitesse 15, 16 sont disposés sur un arbre 10 ayant un canal d'huile de lubrification capable d'évacuer l'huile de lubrification dans une direction radiale. La structure de lubrification est pourvue : d'une section portante 30 ayant une bague intérieure 32 disposée non rotative sur la périphérie extérieure de l'arbre 10, une bague extérieure 31 disposée non rotative sur un carter de boîte de vitesses, et un rouleau 33 intercalé coulissant entre la bague intérieure 32 et la bague extérieure 31 ; et d'une rondelle de butée 40 annulaire insérée à travers l'arbre 10 et intercalée entre la section portante 30 et l'engrenage de changement de vitesse 15, la surface latérale de la rondelle de butée 40 étant dotée d'une saillie annulaire 44 qui fait saillie dans la direction axiale vers le rouleau 33.
PCT/JP2016/070315 2015-07-21 2016-07-08 Transmission et structure de lubrification de transmission WO2017014077A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680042475.4A CN107850204B (zh) 2015-07-21 2016-07-08 变速器的润滑构造及变速器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-143714 2015-07-21
JP2015143714A JP6610051B2 (ja) 2015-07-21 2015-07-21 変速機の潤滑構造

Publications (1)

Publication Number Publication Date
WO2017014077A1 true WO2017014077A1 (fr) 2017-01-26

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ID=57833917

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Application Number Title Priority Date Filing Date
PCT/JP2016/070315 WO2017014077A1 (fr) 2015-07-21 2016-07-08 Transmission et structure de lubrification de transmission

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JP (1) JP6610051B2 (fr)
CN (1) CN107850204B (fr)
WO (1) WO2017014077A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020026801A (ja) * 2018-08-09 2020-02-20 いすゞ自動車株式会社 ポンプ及び、ギヤ装置の潤滑構造
JP7131220B2 (ja) 2018-09-10 2022-09-06 トヨタ自動車株式会社 車両用動力伝達装置
CN111271440B (zh) * 2020-03-17 2024-04-05 重庆青山工业有限责任公司 汽车变速器轴系润滑机构
JP6894561B1 (ja) 2020-10-29 2021-06-30 Ｔｐｒ株式会社 スラストワッシャ
CN114909402B (zh) * 2021-02-07 2023-08-08 中国航发商用航空发动机有限责任公司 轴承和航空发动机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60110760U (ja) * 1983-12-29 1985-07-27 トヨタ自動車株式会社 歯車変速機の潤滑構造
JPS6185768U (fr) * 1984-11-12 1986-06-05
JPH0828667A (ja) * 1994-07-21 1996-02-02 Daihatsu Motor Co Ltd 動力伝達装置の潤滑構造
JP2015227682A (ja) * 2014-05-30 2015-12-17 日本精工株式会社 摩擦ローラ式変速機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001090819A (ja) * 1999-09-22 2001-04-03 Aisin Ai Co Ltd 変速機の潤滑装置
JP4857465B2 (ja) * 2000-12-27 2012-01-18 アイシン・エィ・ダブリュ株式会社 プラネタリギヤ装置
JP4004447B2 (ja) * 2003-09-22 2007-11-07 トヨタ自動車株式会社 オイルポンプの潤滑構造
JP5936278B2 (ja) * 2013-12-24 2016-06-22 本田技研工業株式会社 変速機の潤滑構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60110760U (ja) * 1983-12-29 1985-07-27 トヨタ自動車株式会社 歯車変速機の潤滑構造
JPS6185768U (fr) * 1984-11-12 1986-06-05
JPH0828667A (ja) * 1994-07-21 1996-02-02 Daihatsu Motor Co Ltd 動力伝達装置の潤滑構造
JP2015227682A (ja) * 2014-05-30 2015-12-17 日本精工株式会社 摩擦ローラ式変速機

Also Published As

Publication number Publication date
CN107850204A (zh) 2018-03-27
JP2017025985A (ja) 2017-02-02
JP6610051B2 (ja) 2019-11-27
CN107850204B (zh) 2020-07-17

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