JPH0223280A - Oil pump for engine - Google Patents

Oil pump for engine

Info

Publication number
JPH0223280A
JPH0223280A JP17174888A JP17174888A JPH0223280A JP H0223280 A JPH0223280 A JP H0223280A JP 17174888 A JP17174888 A JP 17174888A JP 17174888 A JP17174888 A JP 17174888A JP H0223280 A JPH0223280 A JP H0223280A
Authority
JP
Japan
Prior art keywords
engine
pump
drive shaft
pump case
oil
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.)
Granted
Application number
JP17174888A
Other languages
Japanese (ja)
Other versions
JP2663531B2 (en
Inventor
Shiro Kitabayashi
北林　史郎
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.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP63171748A priority Critical patent/JP2663531B2/en
Publication of JPH0223280A publication Critical patent/JPH0223280A/en
Application granted granted Critical
Publication of JP2663531B2 publication Critical patent/JP2663531B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Rotary Pumps (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、エンジンの外形寸法、特にクランクシャフ
ト方向の長さを短くできるように改善したエンジンのオ
イルポンプに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an oil pump for an engine that is improved so that the external dimensions of the engine, particularly the length in the direction of the crankshaft, can be shortened.

〔従来の技術とその問題点〕[Conventional technology and its problems]

四サイクールエンジンは、クランクケース下端にオイル
パンを連結して潤滑オイルを収容し、クランクシャフト
などに連動させたトロコイド型などのオイルポンプを設
け、エンジン運転中、オイルポンプでオイルパン内の潤
滑オイルを汲上げて、エンジン各部を潤滑するようにし
ている。トロコイドポンプを用いる場合は、一般に、第
２図に示すように、ポンプケースＡ内に、インナーギヤ
ーＢと偏芯したアウターギヤーＣを噛合せて回転自在に
挿入し、ポンプケースＡをエンジンブロックＤの端面に
締着し、クランクシャフトＥをインナ−ギヤーＢに通し
て、クランクシャフトＥでインナーギヤーＢを回転させ
るようにしている。又、ポンプケースＡの端には、クラ
ンクシャフトＥに弾接するようにオイルシールＦを取付
け、オイルシールＦの内側から、ポンプケースＡ内に穿
設した抜き孔Ｇを下側からエンジンブロックＤの内側に
通じるように設けて、ｌＩＩ滑オイルの洩れを防いでい
る。このためポンプケースＡが大きくなり、ポンプケー
スＡの外側で、クランクシャフトＥにタイミングプーリ
Ｈを連結して、タイミングベルトＪを巻掛けている。従
って、タイミングプーリＨの位置がエンジンブロックＤ
の端から離れ、（寸法し参照）エンジンの長さが長くな
る不都合がある。例えば、実開昭５６−１０７９０８号
公報、実公昭５７−１１４１１７号公報参照。The four-cycle engine has an oil pan connected to the lower end of the crankcase to store lubricating oil, and is equipped with an oil pump such as a trochoid type that is linked to the crankshaft.The oil pump lubricates the inside of the oil pan while the engine is running. Oil is pumped up to lubricate various parts of the engine. When using a trochoid pump, generally, as shown in Fig. 2, an inner gear B and an eccentric outer gear C are inserted into the pump case A so as to be rotatable while meshing with each other, and the pump case A is inserted into the engine block D. The crankshaft E is passed through the inner gear B, and the inner gear B is rotated by the crankshaft E. Also, an oil seal F is attached to the end of the pump case A so as to make elastic contact with the crankshaft E, and from the inside of the oil seal F, a hole G drilled in the pump case A is inserted into the engine block D from below. It is provided so as to communicate with the inside to prevent lII lubricating oil from leaking. For this reason, the pump case A has become larger, and a timing pulley H is connected to the crankshaft E on the outside of the pump case A, and a timing belt J is wound around the crankshaft E. Therefore, the timing pulley H is located at the engine block D.
(see dimensions) and the length of the engine becomes longer. For example, see Japanese Utility Model Publication No. 56-107908 and Japanese Utility Model Publication No. 57-114117.

〔発明の目的〕[Purpose of the invention]

この発明は、ポンプのインナーギヤーを駆動する駆動軸
にオイル抜きを設けて、ポンプケースの小型化を図り、
椀形のプーリをポンプケースを覆うように取付けて、プ
ーリをエンジンブロックに近ずけて配置させることがで
き、エンジンの全長を短く小型化できるエンジンのオイ
ルポンプを得ることを目的とする。This invention aims to downsize the pump case by providing an oil drain on the drive shaft that drives the inner gear of the pump.
To provide an oil pump for an engine, which can shorten the overall length of the engine by installing a bowl-shaped pulley so as to cover the pump case and arranging the pulley close to an engine block.

〔発明の構成〕[Structure of the invention]

以下、本発明を第１図に示す実施例によって説明する。 The present invention will be explained below with reference to an embodiment shown in FIG.

オイルポンプは、トロコイド型ポンプで、ポンプケース
１内にインナーギヤー２と、偏芯したアウターギヤー３
を噛合せて回転自在に挿入する。The oil pump is a trochoid type pump, with an inner gear 2 inside the pump case 1 and an eccentric outer gear 3.
mesh and insert freely rotatably.

ポンプケース１の中心には、駆動軸４を回転自在に軸着
する。駆動軸４の内端には、インナーギヤー２を固着す
る。ポンプケース１の外側には、オイルシール５を圧入
して、駆動軸４に弾接させである。駆動軸４には、内側
から芯孔６を穿設し、横孔７でオイルシール５の内側に
連通させ、オイル抜きにしである。駆動軸４の内端には
、インナーギヤー２を固定する。ポンプケース１は、エ
ンジンブロック８の端面にボルト９を用いて締着する。A drive shaft 4 is rotatably attached to the center of the pump case 1. An inner gear 2 is fixed to the inner end of the drive shaft 4. An oil seal 5 is press-fitted into the outside of the pump case 1 and brought into elastic contact with the drive shaft 4. A core hole 6 is bored from the inside of the drive shaft 4, and a horizontal hole 7 communicates with the inside of the oil seal 5 to drain oil. An inner gear 2 is fixed to the inner end of the drive shaft 4. The pump case 1 is fastened to the end face of the engine block 8 using bolts 9.

プーリ１０は、内側を盗んだ椀形にしてあって、ポンプ
ケース１を覆うようにして、駆動軸４の外端に締着連結
する。プーリ１０の外周には、タイミングベルト１１を
巻掛けて、タイミングベルト１１でプーリ１０を駆動回
転させる。The pulley 10 has a bowl-shaped inner side and is tightly connected to the outer end of the drive shaft 4 so as to cover the pump case 1. A timing belt 11 is wound around the outer periphery of the pulley 10, and the pulley 10 is driven and rotated by the timing belt 11.

〔発明の作用］ エンジン運転中は、タイミングベルト１１によってプー
リ１０が回転され、駆動ｌ５Ａ４によってインナーギヤ
ー２を回転させる。アウターギヤー３はインナーギヤー
２に従動して回転し、偏芯したアウターギヤー３の容積
変化でポンプ作用を行い、ｙ１滑オイルをエンジン各部
に送る。駆動軸４を伝って外側に洩れてくる潤滑オイル
は、オイルシール５によって洩れ止めされ、オイルシー
ル５の手釣に溜った潤滑オイルは、横孔７芯孔６を通っ
て、エンジンブロック８内に抜かれる。このように駆動
軸４の芯孔６でオイル抜きするので、ポンプケース１を
小型にできる。プーリ１０は、内側を椀形にして盗み、
小型にしたポンプケース１を覆うようにして、駆動軸４
の端に連結するので、プーリ１０をエンジンブロック８
に近ずけて配置できて、エンジンの全長を短くできる。[Operation of the Invention] During engine operation, the pulley 10 is rotated by the timing belt 11, and the inner gear 2 is rotated by the drive l5A4. The outer gear 3 rotates following the inner gear 2, performs a pumping action by changing the volume of the eccentric outer gear 3, and sends the y1 oil to each part of the engine. The lubricating oil leaking to the outside along the drive shaft 4 is prevented from leaking by the oil seal 5, and the lubricating oil that has accumulated in the oil seal 5 passes through the lateral hole 7 and the core hole 6 into the engine block 8. is overtaken by Since the oil is drained through the core hole 6 of the drive shaft 4 in this way, the pump case 1 can be made smaller. Pulley 10 is made into a bowl shape on the inside,
The drive shaft 4 is installed so as to cover the downsized pump case 1.
Since the pulley 10 is connected to the end of the engine block 8
It can be placed closer to the engine, reducing the overall length of the engine.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明は、トロコイド型ポンプ
の駆動軸に横孔と芯孔を設けてオイル抜きにしたので、
ポンプケースを小型化できる。そして、この小型化した
ポンプケースを覆うように椀形にしたプーリを駆動軸に
取付けて、タイミングベルトでプーリを駆動するように
したので、プーリをエンジンブロックに近ずけて配置で
き、エンジンの全長を短くできて、エンジンの外形寸法
の小型化が図れる。As explained above, in this invention, the drive shaft of the trochoidal pump is provided with a horizontal hole and a core hole to drain oil.
The pump case can be made smaller. A bowl-shaped pulley was attached to the drive shaft to cover this downsized pump case, and the timing belt was used to drive the pulley. This enabled the pulley to be placed closer to the engine block, allowing the engine to The overall length can be shortened and the external dimensions of the engine can be made smaller.

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

第１図は本発明の一実施例を示す縦断側面図、第２図は
従来例を示す縦断側面図である。 １・・・ポンプケース、２・・・インナーギヤー３・・
・アウターギヤー、４・・・駆動軸、５・・・オイルシ
ール、６・・・芯孔、７・・・横孔、８・・・エンジン
ブロック、１ｏ・・・プーリ、１１・・・タイミングベ
ルト。FIG. 1 is a vertical side view showing an embodiment of the present invention, and FIG. 2 is a vertical side view showing a conventional example. 1...Pump case, 2...Inner gear 3...
・Outer gear, 4... Drive shaft, 5... Oil seal, 6... Core hole, 7... Side hole, 8... Engine block, 1o... Pulley, 11... Timing belt.

Claims (1)

【特許請求の範囲】 １、ポンプケース内にインナーギヤーと偏芯したアウタ
ーギヤーを噛合せて回転自在に挿入し、インナーギヤー
を駆動軸で駆動するトロコイドポンプを設け、ポンプケ
ースをエンジンブロック端面に締着し、椀形のプーリを
駆動軸端にポンプケースを覆うように取付け、プーリを
タイミングベルトで回転させるようにしたことを特徴と
するエンジンのホイルポンプ。 ２、ポンプケース内にインナーギヤーと偏芯したアウタ
ーギヤーを噛合せて回転自在に挿入し、インナーギヤー
を駆動軸で駆動するトロコイドポンプに於て、ポンプケ
ース外端と駆動軸の間にオイルシールを設け、駆動軸に
内側に通じる芯孔を設けて横孔でオイルシール内側に芯
孔を連通させ、オイル抜きにしたことを特徴とするエン
ジンのオイルポンプ。[Claims] 1. A trochoid pump is provided in which an inner gear and an eccentric outer gear are meshed and rotatably inserted into the pump case, and the inner gear is driven by a drive shaft, and the pump case is attached to the end face of the engine block. An engine foil pump characterized in that a fastened, bowl-shaped pulley is attached to the end of the drive shaft so as to cover the pump case, and the pulley is rotated by a timing belt. 2. In a trochoid pump, in which an inner gear and an eccentric outer gear are meshed and rotatably inserted into the pump case, and the inner gear is driven by a drive shaft, an oil seal is installed between the outer end of the pump case and the drive shaft. An oil pump for an engine, characterized in that the drive shaft is provided with a core hole that communicates with the inside of the oil seal, and the core hole is communicated with the inside of the oil seal through a horizontal hole to drain oil.
JP63171748A 1988-07-12 1988-07-12 Engine oil pump Expired - Lifetime JP2663531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63171748A JP2663531B2 (en) 1988-07-12 1988-07-12 Engine oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63171748A JP2663531B2 (en) 1988-07-12 1988-07-12 Engine oil pump

Publications (2)

Publication Number Publication Date
JPH0223280A true JPH0223280A (en) 1990-01-25
JP2663531B2 JP2663531B2 (en) 1997-10-15

Family

ID=15928964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63171748A Expired - Lifetime JP2663531B2 (en) 1988-07-12 1988-07-12 Engine oil pump

Country Status (1)

Country Link
JP (1) JP2663531B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04109487U (en) * 1991-03-05 1992-09-22 アスカ工業株式会社 Gear pump mounting structure
WO2010044416A1 (en) * 2008-10-14 2010-04-22 株式会社ジェイテクト Electric pump unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124124A (en) * 1974-08-21 1976-02-26 Mitsubishi Electric Corp
JPS56113106U (en) * 1980-01-30 1981-09-01
JPS618485A (en) * 1984-06-22 1986-01-16 Aisin Seiki Co Ltd Oil pump
JPS6254290U (en) * 1985-09-24 1987-04-03
JPS62130189U (en) * 1986-02-07 1987-08-17

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124124A (en) * 1974-08-21 1976-02-26 Mitsubishi Electric Corp
JPS56113106U (en) * 1980-01-30 1981-09-01
JPS618485A (en) * 1984-06-22 1986-01-16 Aisin Seiki Co Ltd Oil pump
JPS6254290U (en) * 1985-09-24 1987-04-03
JPS62130189U (en) * 1986-02-07 1987-08-17

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04109487U (en) * 1991-03-05 1992-09-22 アスカ工業株式会社 Gear pump mounting structure
WO2010044416A1 (en) * 2008-10-14 2010-04-22 株式会社ジェイテクト Electric pump unit
US8790095B2 (en) 2008-10-14 2014-07-29 Jtekt Corporation Electric pump unit

Also Published As

Publication number Publication date
JP2663531B2 (en) 1997-10-15

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