JPH0541806B2 - - Google Patents

Info

Publication number
JPH0541806B2
JPH0541806B2 JP58194365A JP19436583A JPH0541806B2 JP H0541806 B2 JPH0541806 B2 JP H0541806B2 JP 58194365 A JP58194365 A JP 58194365A JP 19436583 A JP19436583 A JP 19436583A JP H0541806 B2 JPH0541806 B2 JP H0541806B2
Authority
JP
Japan
Prior art keywords
oil
gear
balancer
chamber
oil sump
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.)
Expired - Fee Related
Application number
JP58194365A
Other languages
Japanese (ja)
Other versions
JPS6088812A (en
Inventor
Yoshikuni Yamauchi
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor 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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP19436583A priority Critical patent/JPS6088812A/en
Publication of JPS6088812A publication Critical patent/JPS6088812A/en
Publication of JPH0541806B2 publication Critical patent/JPH0541806B2/ja
Granted legal-status Critical Current

Links

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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/06—Dip or splash lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/108—Lubrication of valve gear or auxiliaries of auxiliaries

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • General Details Of Gearings (AREA)

Abstract

PURPOSE:To perform lubrication for balancer gears in an effective manner without enlarging the space of an internal-combustion engine, by forming an oil sump, dipping the lower end of each balancer gear, in a position corresponding to the lower end of these balancer gears. CONSTITUTION:A reduction pinion 8 is locked to a shaft end of a crankshaft projected to the side of a clutch chamber 6, and this reduction pinion is engaged with a reduction gear wheel 10. At a position corresponding to each lower end of balancer gears 15 and 16, an oil sump 19 is formed, and the lower end of the balancer gear 15 is dipped in this oil sump 19. Then, the reduction gear wheel 10 makes oil being dipped up from an oil sump 13 at the lower part of the clutch chamber 6 circulate inside the oil sump 19. With this constitution, lubrication for these balancer gears 15 and 16 is performable in an effective manner without enlarging the space of an internal-conbustion engine.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、クランク軸々端のクラツチ室側にバ
ランサを設けた内燃機関におけるバランサ歯車潤
滑構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a balancer gear lubrication structure in an internal combustion engine in which a balancer is provided on the clutch chamber side of each end of the crankshaft.

〔従来技術〕[Prior art]

内燃機関のクランク軸回転を円滑にするため、
クラツチ室側に突出するクランク軸々端に、クラ
ンク角位相をピストンと180度異ならせて回転す
るバランサを設けるものがある。このバランサは
クランク軸々端に固定したバランサ歯車を介して
駆動される。 To ensure smooth rotation of the crankshaft of an internal combustion engine,
Some crankshafts are equipped with a balancer that rotates at each end of the crankshaft that protrudes toward the clutch chamber so that the crank angle phase is 180 degrees different from that of the piston. This balancer is driven via balancer gears fixed to each end of the crankshaft.

ところが、クラツチ室において、クラツチ組立
体の減大歯車はバランサ歯車と比較して大径であ
ると共に、それらの軸配置等の関係から、バラン
サ歯車をクラツチ室下部の油溜めに減大歯車と同
様に浸漬させることができない。また、バランサ
歯車の潤滑を減大歯車の掻き上げによる飛沫潤滑
に依存したのでは、バランサ歯車へのオイル付着
量が十分得られない。すなわち、このような飛沫
潤滑では、それ自体のオイル供給量が不十分であ
ると共に、バランサ歯車と減大歯車とが軸方向に
互いにずれて配置されているので、バランサ歯車
にオイルが付着しにくい。しかも、小量のオイル
を高速回転のバランサ歯車に付着させても簡単に
飛散してしまう。 However, in the clutch chamber, the reducing gear of the clutch assembly has a larger diameter than the balancer gear, and due to their shaft arrangement, etc., the balancer gear is placed in the oil sump at the bottom of the clutch chamber in the same way as the reducing gear. It cannot be immersed in water. Furthermore, if the lubrication of the balancer gear relies on splash lubrication caused by scraping up the reduced gear, a sufficient amount of oil cannot be deposited on the balancer gear. In other words, with such splash lubrication, the amount of oil supplied to itself is insufficient, and the balancer gear and the reduction gear are arranged axially offset from each other, making it difficult for oil to adhere to the balancer gear. . Moreover, even if a small amount of oil adheres to the high-speed rotating balancer gear, it will easily scatter.

従つて、従来の内燃機関では、そのバランサ歯
車が比較的速い速度で回転するにもかかわらず十
分な潤滑が行われず、バランサ歯車の噛合音やバ
ランサ歯車自体の振動（共振）により騒音が発生
していた。 Therefore, in conventional internal combustion engines, the balancer gear does not have sufficient lubrication even though it rotates at a relatively high speed, and noise is generated due to the meshing sound of the balancer gear and the vibration (resonance) of the balancer gear itself. was.

〔発明の目的と概要〕[Purpose and outline of the invention]

本発明の目的は、従来の内燃機関のスペースを
拡大することなくバランサ歯車の潤滑を効果的に
行うことができるバランサ歯車潤滑構造を提供せ
んとすることにある。 An object of the present invention is to provide a balancer gear lubrication structure that can effectively lubricate a balancer gear without expanding the space of a conventional internal combustion engine.

上記目的を達成する本発明のバランサ歯車潤滑
構造は、クランク室からクラツチ室側に突出した
クランク軸々端に、クラツチ組立体の減大歯車と
噛合する減小歯車と、バランサを駆動するバラン
サ歯車とを軸方向に並べて設けると共に、前記ク
ラツチ室下部に前記減大歯車下端を浸漬する油溜
めを設け、前記クラツチ組立体に連結した変速歯
車群を収納するミツシヨン室を前記クラツチ室に
隣接配置すると共に、該ミツシヨン室下部に前記
変速歯車群下端を浸漬する油溜めを設けた内燃機
関において、 前記減大歯車がクラツチ室の油溜めから掻き上
げたオイルを前記ミツシヨン室の油溜めへ案内す
る油路を設け、さらに該ミツシヨン室の油溜めの
オイルを前記クラツチ室の油溜めへ流下させる油
路を兼ねて前記クラツチ室内に前記バランサ歯車
下端を浸漬する油溜めを設けたことを特徴とする
ものである。 The balancer gear lubrication structure of the present invention that achieves the above object has a reducing gear that meshes with an increasing gear of a clutch assembly, and a balancer gear that drives the balancer, which is provided at each end of the crankshaft protruding from the crank chamber toward the clutch chamber. and an oil reservoir for immersing the lower end of the reducing gear in the lower part of the clutch chamber, and a transmission chamber for storing a group of transmission gears connected to the clutch assembly is arranged adjacent to the clutch chamber. In addition, in an internal combustion engine having an oil sump in which the lower end of the transmission gear group is immersed in the lower part of the transmission chamber, an oil sump that guides the oil scooped up by the reduction gear from the oil sump in the clutch chamber to the oil sump in the transmission chamber. Further, an oil sump is provided in the clutch chamber to immerse the lower end of the balancer gear, and also serves as an oil path for flowing oil from the oil sump in the transmission chamber to the oil sump in the clutch chamber. It is.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明を図に示す実施例により説明す
る。 Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.

図において、１はシリンダ、２はピストン、３
はクランク軸である。ピストン２は連結棒４とク
ランク５を介してクランク軸３を回転駆動する。
クランク軸３の一方の軸端にはクラツチ室６が設
けられ、さらにクラツチ室６に隣接してミツシヨ
ン室７が設けられている。 In the figure, 1 is a cylinder, 2 is a piston, and 3 is a cylinder.
is the crankshaft. The piston 2 rotates a crankshaft 3 via a connecting rod 4 and a crank 5.
A clutch chamber 6 is provided at one end of the crankshaft 3, and a transmission chamber 7 is provided adjacent to the clutch chamber 6.

クラツチ室６側に突出したクランク軸３の軸端
には減小歯車８が固定され、この減小歯車８はク
ラツチ組立体９に一体にした減大歯車１０と噛合
している。このクラツチ組立体９の出力軸１１は
ミツシヨン室７に挿入され、その上に変速歯車群
１２が設けられている。クラツチ室６とミツシヨ
ン室７にはそれぞれ下部に油溜め１３，１４が設
けられ、それらの油面１３ａ，１４ａは後者の方
が前者よりも高くなつている。上記油溜め１３に
は減大歯車１０の下端が浸漬し、また油溜め１４
には変速歯車群１２の下端が浸漬している。 A reducing gear 8 is fixed to the shaft end of the crankshaft 3 protruding toward the clutch chamber 6, and this reducing gear 8 meshes with an increasing reducing gear 10 integrated with the clutch assembly 9. The output shaft 11 of the clutch assembly 9 is inserted into the transmission chamber 7, and a gear group 12 is provided thereon. Oil reservoirs 13 and 14 are provided in the lower portions of the clutch chamber 6 and the transmission chamber 7, respectively, and their oil levels 13a and 14a are higher in the latter than in the former. The lower end of the reducing gear 10 is immersed in the oil sump 13, and the oil sump 14
The lower end of the transmission gear group 12 is immersed in the.

また上記クランク軸３の軸端にはバランサ歯車
１５が固定され、このバランサ歯車１５はバラン
サ歯車１６を介してバランサ１７を回転駆動す
る。上記バランサ歯車１５の下端に対応する位置
には、側板１８により塞き止められた油溜め１９
が形成され、その油溜め１９にバランサ歯車１５
の下端が浸漬されている。油溜め１９の油面１９
ａは上記油溜１３，１４の油面１３ａ，１４ａの
中間に位置している。 Further, a balancer gear 15 is fixed to the shaft end of the crankshaft 3, and this balancer gear 15 rotationally drives a balancer 17 via a balancer gear 16. At a position corresponding to the lower end of the balancer gear 15, there is an oil reservoir 19 blocked by a side plate 18.
is formed, and the balancer gear 15 is placed in the oil sump 19.
The lower end of is immersed. Oil level 19 of oil sump 19
A is located between the oil levels 13a and 14a of the oil reservoirs 13 and 14.

一方、前記減大歯車１０の上端側部には、それ
に対応したクラツチ室６内壁に樋２０が形成さ
れ、この樋２０は連通孔２１を介してミツシヨン
室７に連通している。またミツシヨン室７は、そ
の油溜め１４の部分を連通孔２２を介して上記バ
ランサ歯車１５の油溜め１９に連通させている。 On the other hand, a gutter 20 is formed on the inner wall of the clutch chamber 6 at the upper end of the reducing gear 10, and this gutter 20 communicates with the mission chamber 7 through a communication hole 21. Further, the oil reservoir 14 of the transmission chamber 7 communicates with the oil reservoir 19 of the balancer gear 15 through a communication hole 22.

上述した構成の内燃機関を駆動すると、減小歯
車８と噛合した減大歯車１０が、その回転により
油溜め１３から矢印ａで示すようにオイルを掻き
上げて上端まで運び、その上端側部の位置で遠心
力により矢印ｂ，ｃのように樋２０の中に放出す
る。樋２０に放出されたオイルは連通孔２１から
矢印ｄのようにミツシヨン室７の油溜め１４に落
下する。油溜１４に落下したオイルは矢印ｅのよ
うに移動し、さらに連通孔２２から矢印ｆのよう
にバランサ歯車１５の油溜め１９内に浸入する。
油溜め１９のオイルは、さらに矢印ｇのように落
下して元のクラツチ室６の油溜め１３へ循環し、
以後それを繰り返す。 When the internal combustion engine configured as described above is driven, the reduction gear 10 meshed with the reduction gear 8, through its rotation, scoops up oil from the oil sump 13 as shown by arrow a, carries it to the upper end, and transfers it to the upper end side part. At this point, it is discharged into the gutter 20 as shown by arrows b and c due to centrifugal force. The oil discharged into the gutter 20 falls from the communication hole 21 into the oil sump 14 of the mission chamber 7 as indicated by arrow d. The oil that has fallen into the oil sump 14 moves as shown by the arrow e, and further enters the oil sump 19 of the balancer gear 15 from the communication hole 22 as shown by the arrow f.
The oil in the oil sump 19 further falls as indicated by arrow g and circulates back to the oil sump 13 in the clutch chamber 6.
Repeat this from now on.

このように油溜め１９には絶えずオイルが循環
しているため、その油溜め１９に下端を浸漬する
バランサ歯車１５と、このバランサ歯車１５と噛
合するバランサ歯車１６とは良好に潤滑され、騒
音を発生することはない。また、このバランサ歯
車１５，１６の潤滑構造は油溜め１９を形成する
だけであつて、オイルはクラツチ室６の油溜め１
３から循環させて利用するため、従来の機関を何
ら拡大することなく構成することができる。 Since oil is constantly circulating in the oil sump 19 in this way, the balancer gear 15 whose lower end is immersed in the oil sump 19 and the balancer gear 16 that meshes with this balancer gear 15 are well lubricated and noise is reduced. It will never occur. Further, the lubrication structure of the balancer gears 15 and 16 only forms an oil reservoir 19, and the oil is supplied to the oil reservoir 1 in the clutch chamber 6.
Since it is used by circulating from 3, it is possible to configure a conventional engine without any expansion.

〔発明の効果〕〔Effect of the invention〕

上述したように本発明のバランサ歯車潤滑構造
は、クラツチ組立体の減大歯車がクラツチ室の油
溜めから掻き上げたオイルをミツシヨン室の油溜
めに供給するようにし、このミツシヨン室の油溜
めのオイルを前記クラツチ室の油溜めへ流下させ
る油路を兼ねてバランサ歯車下端を浸漬する油溜
めを設けたので、ミツシヨン室の油溜めに蓄えら
れたオイルを確実にバランサ歯車の油溜めに供給
し、減大歯車による飛沫潤滑に比べてバランサ歯
車の潤滑を効果的に行うことができ、これにより
騒音の発生を防止することができる。また、上記
のオイル循環は、クラツチ室の油面とミツシヨン
室の油面との高低差を利用するためポンプ等を追
加する必要がなく、しかもその循環経路は各油溜
めを連通するだけであるので、バランサ歯車の潤
滑構造を従来の内燃機関のスペースを拡大するこ
となく構成することが可能になる。 As described above, the balancer gear lubrication structure of the present invention is configured such that the reducing gear of the clutch assembly supplies oil scooped up from the oil sump in the clutch chamber to the oil sump in the transmission chamber. Since the oil sump is provided to immerse the lower end of the balancer gear and also serves as an oil path for the oil to flow down to the oil sump in the clutch chamber, the oil stored in the oil sump in the transmission chamber can be reliably supplied to the oil sump in the balancer gear. , the balancer gear can be more effectively lubricated than the droplet lubrication using the reduced-size gear, thereby preventing the generation of noise. In addition, the above oil circulation utilizes the difference in height between the oil level in the clutch chamber and the oil level in the transmission chamber, so there is no need to add a pump or the like, and the circulation path only communicates with each oil reservoir. Therefore, it becomes possible to construct a lubrication structure for the balancer gear without expanding the space of the conventional internal combustion engine.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明によるバランサ歯車潤滑構造を
設けた内燃機関を一部断面にし、かつクラツチ室
側のケースを取り外して示す概略正面図、第２図
は第１図のＡ−Ｃ−A′断面図、第３図は第１図
のＡ−Ｃ−Ｄ−Ｂ断面図である。 ３……クランク軸、６……クラツチ室、７……
ミツシヨン室、８……減小歯車、９……クラツチ
組立体、１０……減大歯車、１３，１４，１９…
…油溜め、１５，１６……バランサ歯車、１７…
…バランサ、１８……側板、２０……樋、２１，
２２……連通孔。 FIG. 1 is a schematic front view of an internal combustion engine equipped with a balancer gear lubrication structure according to the present invention, with the clutch chamber side case removed, and FIG. The sectional view, FIG. 3, is a sectional view taken along A-C-D-B in FIG. 1. 3...Crankshaft, 6...Clutch chamber, 7...
Mission chamber, 8...Reduction gear, 9...Clutch assembly, 10...Reduction gear, 13, 14, 19...
...Oil sump, 15, 16... Balancer gear, 17...
... Balancer, 18 ... Side plate, 20 ... Gutter, 21,
22...Communication hole.

Claims (1)

【特許請求の範囲】 １ クランク室からクラツチ室側に突出したクラ
ンク軸々端に、クラツチ組立体の減大歯車と噛合
する減小歯車と、バランサを駆動するバランサ歯
車とを軸方向に並べて設けると共に、前記クラツ
チ室下部に前記減大歯車下端を浸漬する油溜めを
設け、前記クラツチ組立体に連結した変速歯車群
を収納するミツシヨン室を前記クラツチ室に隣接
配置すると共に、該ミツシヨン室下部に前記変速
歯車群下端を浸漬する油溜めを設けた内燃機関に
おいて、 前記減大歯車がクラツチ室の油溜めから掻き上
げたオイルを前記ミツシヨン室の油溜めへ案内す
る油路を設け、さらに該ミツシヨン室の油溜めの
オイルを前記クラツチ室の油溜めへ流下させる油
路を兼ねて前記クラツチ室内に前記バランサ歯車
下端を浸漬する油溜めを設けた内燃機関のバラン
サ歯車潤滑機構。[Scope of Claims] 1. A reduction gear that meshes with the reduction gear of the clutch assembly and a balancer gear that drives a balancer are arranged in the axial direction at each end of the crankshaft protruding from the crank chamber toward the clutch chamber. In addition, an oil reservoir is provided in the lower part of the clutch chamber in which the lower end of the reducing gear is immersed, and a transmission chamber for accommodating a group of transmission gears connected to the clutch assembly is disposed adjacent to the clutch chamber, and in the lower part of the transmission chamber. An internal combustion engine is provided with an oil sump in which the lower end of the transmission gear group is immersed, and an oil passage is provided for guiding the oil scooped up by the reduction gear from the oil sump in the clutch chamber to the oil sump in the transmission chamber, and A balancer gear lubrication mechanism for an internal combustion engine, wherein an oil reservoir is provided in the clutch chamber to immerse the lower end of the balancer gear, the oil reservoir also serving as an oil path for flowing oil from the oil reservoir in the clutch chamber to the oil reservoir in the clutch chamber.
JP19436583A 1983-10-19 1983-10-19 Balancer gear lubricating structure for internal- combustion engine Granted JPS6088812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19436583A JPS6088812A (en) 1983-10-19 1983-10-19 Balancer gear lubricating structure for internal- combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19436583A JPS6088812A (en) 1983-10-19 1983-10-19 Balancer gear lubricating structure for internal- combustion engine

Publications (2)

Publication Number Publication Date
JPS6088812A JPS6088812A (en) 1985-05-18
JPH0541806B2 true JPH0541806B2 (en) 1993-06-24

Family

ID=16323366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19436583A Granted JPS6088812A (en) 1983-10-19 1983-10-19 Balancer gear lubricating structure for internal- combustion engine

Country Status (1)

Country Link
JP (1) JPS6088812A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH068277Y2 (en) * 1987-02-13 1994-03-02 本田技研工業株式会社 Engine case
JP6194762B2 (en) * 2013-11-07 2017-09-13 スズキ株式会社 Transmission lubrication structure for motorcycles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5743047U (en) * 1980-08-18 1982-03-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5743047U (en) * 1980-08-18 1982-03-09

Also Published As

Publication number Publication date
JPS6088812A (en) 1985-05-18

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