JPH0218250Y2 - - Google Patents
Info
- Publication number
- JPH0218250Y2 JPH0218250Y2 JP1986018084U JP1808486U JPH0218250Y2 JP H0218250 Y2 JPH0218250 Y2 JP H0218250Y2 JP 1986018084 U JP1986018084 U JP 1986018084U JP 1808486 U JP1808486 U JP 1808486U JP H0218250 Y2 JPH0218250 Y2 JP H0218250Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil pump
- driven gear
- bearing member
- timing belt
- engine
- 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
Links
- 230000013011 mating Effects 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 33
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はエンジンのオイルポンプ取付装置の改
良に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of an oil pump mounting device for an engine.
（従来技術）
エンジンのオイルポンプ（トロコイドタイプ）
は通常そのポンプシヤフトの先端部に設けた被駆
動ギアをカム軸に設けた駆動ギアと噛み合わせる
ようにエンジン本体内に装着されている。（例え
ば実開昭57−139609号公報）
上記オイルポンプの被駆動ギアがエンジン本体
内に組み込まれるためには、オイルポンプシヤフ
トの先端部から軸心に沿う延長上のエンジンケー
スに被駆動ギアを挿入するための開口部が設けら
れており、その被駆動ギアの取付後は該開口部が
プラグ等で塞がれるようになつている。(Prior technology) Engine oil pump (trochoid type)
Usually, the engine is mounted within the engine body so that the driven gear provided at the tip of the pump shaft meshes with the drive gear provided on the camshaft. (For example, Japanese Utility Model Application Publication No. 57-139609) In order to incorporate the driven gear of the oil pump into the engine body, the driven gear must be installed in the engine case extending from the tip of the oil pump shaft along the axis. An opening is provided for insertion, and after the driven gear is installed, the opening is closed with a plug or the like.
そのため、オイルポンプシヤフトは細長いにも
拘らずその先端部に設けた被駆動ギアにかなり大
きな荷重がかかり、いわゆる片持支持となりオイ
ルポンプシヤフトが湾曲し易くギアの噛み合いが
悪くなるなどによりオイルポンプの故障が生じ易
いという問題があつた。 As a result, even though the oil pump shaft is long and slender, a fairly large load is applied to the driven gear installed at the tip of the oil pump shaft, resulting in what is called a cantilever support, which tends to bend the oil pump shaft and cause poor gear engagement. There was a problem that it was easy to break down.
（考案の目的）
本考案は上記問題点を解消するため、オイルポ
ンプシヤフトの先端部をも軸支し得るようにした
エンジンのオイルポンプ取付装置を提供すること
を目的とする。(Object of the invention) In order to solve the above-mentioned problems, it is an object of the present invention to provide an oil pump mounting device for an engine that can also support the tip of the oil pump shaft.
（考案の構成）
上記の目的を達するための本考案は、オイルポ
ンプシヤフトの先端部のドリブンギアをエンジン
本体に設けたカム軸のドライブギアに噛み合わせ
るため、エンジン本体内に上記ドリブンギアを挿
入するための開口部が、エンジン本体を形成する
エンジンケースの上記先端部側に設けられたオイ
ルポンプ取付装置において、上記カム軸のドライ
ブギアを、カム軸先端に取り付けられるカムプー
リ近傍に形成するとともに、該ドリブンギアの上
記先端部側に軸心に沿う支軸部を突設し、かつ上
記開口部に該支軸部を軸支する軸受部材を嵌合さ
せて設け、該軸受部材には、タイミングベルトカ
バーとともにタイミングベルト室を画成するタイ
ミングベルトカバー合わせ面を形成したフランジ
部を一体に形成したものである。(Structure of the invention) In order to achieve the above object, the invention involves inserting the driven gear into the engine body in order to engage the driven gear at the tip of the oil pump shaft with the drive gear of the camshaft provided in the engine body. In the oil pump mounting device, the opening for the purpose of the oil pump is provided on the tip end side of the engine case forming the engine body, and the drive gear of the camshaft is formed near the cam pulley attached to the tip of the camshaft, A support shaft extending along the axis is provided on the tip end side of the driven gear, and a bearing member for pivotally supporting the support shaft is fitted into the opening, and the bearing member has a timing A flange portion that forms a timing belt cover mating surface that defines a timing belt chamber together with the belt cover is integrally formed.
（実施例）
以下図面にもとづいて本考案の実施例を説明す
る。(Example) An example of the present invention will be described below based on the drawings.
１はエンジンケースを構成するシリンダヘツ
ド、２はカム軸、３は該カム軸２に設けたドライ
ブギア、４はトロコイドタイプのオイルポンプシ
ヤフトで、六角棒状をなし基端にトロコイドポン
プを構成するインナロータ５を設けている。 1 is a cylinder head that constitutes the engine case, 2 is a camshaft, 3 is a drive gear provided on the camshaft 2, and 4 is a trochoid type oil pump shaft, which has a hexagonal rod shape and has an inner rotor that constitutes a trochoid pump at its base end. 5 is set.
６はドリブンギアで、上記ドライブギア３に噛
み合うギア本体の基端側に一体的に円筒状の基軸
部６ａを設けている。そして、該基軸部６ａは上
記オイルポンプシヤフト４にスプライン嵌合４ａ
し、かつエンジン本体内の軸受部７により軸支さ
れている。 Reference numeral 6 denotes a driven gear, and a cylindrical base shaft portion 6a is integrally provided on the base end side of the gear body that meshes with the drive gear 3. The base shaft portion 6a is fitted with a spline 4a to the oil pump shaft 4.
and is pivotally supported by a bearing portion 7 within the engine body.
８は支軸部で、上記ドリブンギア６の先端側に
一体的に軸心に沿つて突設されている。 Reference numeral 8 denotes a support shaft portion, which is integrally provided on the distal end side of the driven gear 6 and protrudes along the axis.
９はエンジンケース１０の一部を切欠いだ開口
部で、ドリブンギア６の組付時にこれをエンジン
本体内に挿入するため第６図に示すように平面的
には円形状の孔をなしている。 Reference numeral 9 denotes an opening formed by cutting out a part of the engine case 10, which is a circular hole in plan view, as shown in FIG. There is.
１１は開口部９に嵌合させて設けられた軸受部
材で、第３図〜第５図にも示す如くエンジンケー
ス１０に固定するための２個のボルト孔１２を備
えた略円筒状の蓋部材１３を設け、該蓋部材１３
の内側には前記支軸部８を嵌装軸支する凹部１４
を有する軸受材１５を形成している。 Reference numeral 11 denotes a bearing member fitted into the opening 9, which is a substantially cylindrical lid with two bolt holes 12 for fixing it to the engine case 10, as shown in FIGS. 3 to 5. A member 13 is provided, and the lid member 13
On the inside thereof, there is a recess 14 into which the support shaft 8 is fitted and supported.
A bearing material 15 is formed having the following.
また、該軸受部材１１にはタイミングベルトカ
バー合わせ面を１６を形成するフランジ部１７が
上記蓋部材１３の側部に沿つて一体的に設けられ
ている。なお、１８は上記タイミングベルトカバ
ー合わせ面１６に設けたカバー取付ボルト孔であ
る。また第１図に示す１９はロツカーシヤフト、
第２図に示す２０はカムプーリー、２１はタイミ
ングベルト、２２はデイストリビユータ、２３は
シリンダブロツク、第６図に示す２４は軸受部材
１１の取付用ボルト孔、２５は吸気弁支持孔、２
６は排気弁支持孔、２７はデイストリビユータ取
付用ソケツト挿入孔、２８はヘツドボルト孔、
Ｂ，Ｄは潤滑油路である。 Further, a flange portion 17 forming a timing belt cover mating surface 16 is integrally provided on the bearing member 11 along the side portion of the lid member 13. Note that 18 is a cover mounting bolt hole provided in the timing belt cover mating surface 16. In addition, 19 shown in Fig. 1 is a rock shaft,
20 shown in FIG. 2 is a cam pulley, 21 is a timing belt, 22 is a distributor, 23 is a cylinder block, 24 shown in FIG. 6 is a bolt hole for mounting the bearing member 11, 25 is an intake valve support hole, 2
6 is an exhaust valve support hole, 27 is a socket insertion hole for installing a distributor, 28 is a head bolt hole,
B and D are lubricating oil passages.
次に上記軸受部材１１およびドリブンギア６に
供給される潤滑油系路について説明する。 Next, a description will be given of the lubricating oil line that is supplied to the bearing member 11 and the driven gear 6.
第１図において、まずロツカーシヤフト１９の
中心の油路Ａからシリンダヘツド１に設けられた
油路Ｂ，Ｃを矢印で示す如く通り、油路Ｃからは
油路が分岐し、一方は前記軸受部材１１に通じる
油路Ｄを経て軸受部材１１の油路Ｊ（第４図参照）
に入り、これより支軸部８、ドリブンギア６およ
びその基軸部６ａの中心に沿つて設けた油路Ｅ，
Ｆを通り該基軸部６ａを軸支する軸受部７に設け
た油路Ｇに至る。また、上記油路Ｃから他方への
分岐はドライブギア３及びドリブンギア６の歯車
潤滑のための油路Ｈに至る。 In FIG. 1, oil passages A at the center of the rocker shaft 19 first pass through oil passages B and C provided in the cylinder head 1 as indicated by arrows, and oil passages branch from oil passage C, one of which is connected to the bearing member. Oil passage J of bearing member 11 via oil passage D leading to oil passage 11 (see Fig. 4)
From this, an oil passage E provided along the center of the support shaft 8, driven gear 6 and its base shaft 6a,
It passes through F and reaches an oil passage G provided in a bearing part 7 that pivotally supports the base shaft part 6a. Further, a branch from the oil passage C to the other side leads to an oil passage H for gear lubrication of the drive gear 3 and the driven gear 6.
したがつて、上記ドリブンギア６をエンジン本
体内に組付けを行う際には、開口部９よりドリブ
ンギア６を挿入してドライブギア３と噛み合わせ
るように取付け、しかる後軸受部材１１で開口部
９を塞ぎボルト孔１２にボルトを螺設して該軸受
部材１１を固定できる。 Therefore, when assembling the driven gear 6 into the engine body, the driven gear 6 is inserted through the opening 9 and installed so as to mesh with the drive gear 3, and then the bearing member 11 is inserted into the opening. The bearing member 11 can be fixed by closing the hole 9 and screwing a bolt into the bolt hole 12.
かくして、カム軸２の回転により、オイルポン
プが回転される際、細長いオイルポンプシヤフト
４の先端部に設けられたドリブンギア６の支軸部
８が軸受部材１１の内側に設けた軸受部１５で軸
支されるため、ドリブンギア６にかなり大きな荷
重がかかつても、オイルポンプシヤフト４はいわ
ゆる片持支持ではなく両端支持されることにな
り、オイルポンプシヤフト４のたわみは防止され
て安定したオイルポンプの歯車伝達が行なわれ
る。また、上記の如く潤滑油路がオイルポンプシ
ヤフト４の駆動まわりに十分に配設されているた
め更に円滑なオイルポンプ駆動が期待される。勿
論ドリブンギア６のメンテナンスは軸受部材１１
を取りばずすだけで済みエンジンケース１０のシ
ール性も同時に図れる。また軸受部材１１にフラ
ンジ部１７を一体形成したため、部品点数の削減
が図られるとともに、軸受部材１１の組付け時
に、フランジ部１７は軸受材１５を開口部９に嵌
合することによつて容易に位置決めされ、フラン
ジ部１７のタイミングベルトカバー合わせ面１６
がシリンダーヘツド１等のタイミングベルトカバ
ー合わせ面と容易かつ確実に面合わせされて、シ
ール性の良好なタイミングベルト室を画成するこ
とができるものである。 Thus, when the oil pump is rotated by the rotation of the camshaft 2, the support shaft portion 8 of the driven gear 6 provided at the tip of the elongated oil pump shaft 4 is rotated by the bearing portion 15 provided inside the bearing member 11. Since the oil pump shaft 4 is supported by a shaft, even if a fairly large load is applied to the driven gear 6, the oil pump shaft 4 is supported at both ends instead of being supported in a so-called cantilevered manner. A gear transmission of the pump takes place. Furthermore, since the lubricating oil passage is sufficiently arranged around the drive of the oil pump shaft 4 as described above, even smoother oil pump drive is expected. Of course, the maintenance of the driven gear 6 is done by the bearing member 11.
The sealing performance of the engine case 10 can be improved at the same time by simply removing the engine case 10. Furthermore, since the flange portion 17 is integrally formed with the bearing member 11, the number of parts can be reduced, and when the bearing member 11 is assembled, the flange portion 17 can be easily assembled by fitting the bearing member 15 into the opening 9. The timing belt cover mating surface 16 of the flange portion 17
The timing belt cover can be easily and reliably brought into contact with the timing belt cover mating surface of the cylinder head 1, etc., and a timing belt chamber with good sealing performance can be defined.
（考案の効果）
以上説明した本考案によれば、ドリブンギアの
先端側に支軸部を突設すると共に該ドリブンギア
の挿入用開口部に上記支軸部を軸支する軸受部材
を設けているため、狭いスペース内で、ドリブン
ギアを含む細長いオイルポンプシヤフトを両端支
持することができ、上記シヤフト等がたわむよう
なことが無くオイルポンプの作動が確実となり、
ポンプの寿命にも好影響を与えるとともに、メン
テナンスを容易にすることができる。さらに、軸
受部材自体にタイミングベルトカバー合わせ面を
形成したことにより、部品点数の削減を果すとと
もに、このタイミングベルトカバー合わせ面は軸
受部材を取り付けることでシリンダーヘツド等に
形成されているタイミングベルトカバー合わせ面
と確実に一致させることができて組み立てが容易
となる等の特徴を有する。(Effects of the invention) According to the invention described above, a support shaft is provided protruding from the tip side of the driven gear, and a bearing member for pivotally supporting the support shaft is provided in the insertion opening of the driven gear. As a result, the elongated oil pump shaft including the driven gear can be supported at both ends in a narrow space, and the shaft etc. will not bend, ensuring reliable operation of the oil pump.
This has a positive effect on the life of the pump and can facilitate maintenance. Furthermore, by forming a timing belt cover mating surface on the bearing member itself, the number of parts can be reduced, and by attaching the bearing member, the timing belt cover mating surface can be formed on the cylinder head, etc. It has features such as being able to match the surface reliably and making assembly easy.
第１図は本考案に係るエンジンのオイルポンプ
取付構造の断面図、第２図はエンジンに本考案の
カバー部材が取付られた状態の正面図、第３図は
上記カバー部材の正面図、第４図は同上の平面
図、第５図は第４図の−視断面図、第６図は
シリンダヘツドの上記カバー部材等が取付られる
前の状態を示す平面図である。
２…カム軸、３…ドライブギア、４…オイルポ
ンプシヤフト、６…ドリブンギア、８…支軸部、
９…開口部、１１…軸受部材、１５…軸受材、１
６…タイミングベルトカバー合わせ面、１７…フ
ランジ部、２０…カムプーリ、２１…タイミング
ベルト。
Fig. 1 is a sectional view of an engine oil pump mounting structure according to the present invention, Fig. 2 is a front view of the cover member of the present invention attached to the engine, and Fig. 3 is a front view of the cover member. 4 is a plan view of the same as the above, FIG. 5 is a cross-sectional view taken along the line shown in FIG. 4, and FIG. 6 is a plan view of the cylinder head before the cover member and the like are attached. 2...Camshaft, 3...Drive gear, 4...Oil pump shaft, 6...Driven gear, 8...Spindle portion,
9...Opening, 11...Bearing member, 15...Bearing material, 1
6... Timing belt cover mating surface, 17... Flange portion, 20... Cam pulley, 21... Timing belt.
Claims (1)
をエンジン本体に設けたカム軸のドライブギアに
噛み合わせるため、エンジン本体内に上記ドリブ
ンギアを挿入するための開口部が、エンジン本体
を形成するエンジンケースの上記先端部側に設け
られたオイルポンプ取付装置において、上記カム
軸のドライブギアを、カム軸先端に取り付けられ
るカムプーリ近傍に形成するとともに、該ドリブ
ンギアの上記先端部側に軸心に沿う支軸部を突設
し、かつ上記開口部に該支軸部を軸支する軸受部
材を嵌合させて設け、該軸受部材には、タイミン
グベルトカバーとともにタイミングベルト室を画
成するタイミングベルトカバー合わせ面を形成し
たフランジ部を一体に形成したことを特徴とす
る、エンジンのオイルポンプ取付装置。 In order to engage the driven gear at the tip of the oil pump shaft with the drive gear on the camshaft provided in the engine body, an opening for inserting the driven gear into the engine body is located in the upper part of the engine case that forms the engine body. In the oil pump mounting device provided on the tip side, the drive gear of the camshaft is formed near the cam pulley attached to the tip of the camshaft, and a support shaft portion along the axis is provided on the tip side of the driven gear. and a bearing member for pivotally supporting the support shaft portion is fitted into the opening, and the bearing member has a timing belt cover mating surface that defines a timing belt chamber together with the timing belt cover. An oil pump mounting device for an engine, characterized in that a formed flange portion is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986018084U JPH0218250Y2 (en) | 1986-02-10 | 1986-02-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986018084U JPH0218250Y2 (en) | 1986-02-10 | 1986-02-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62130111U JPS62130111U (en) | 1987-08-17 |
| JPH0218250Y2 true JPH0218250Y2 (en) | 1990-05-22 |
Family
ID=30811438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986018084U Expired JPH0218250Y2 (en) | 1986-02-10 | 1986-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0218250Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6070727U (en) * | 1983-10-22 | 1985-05-18 | マツダ株式会社 | Engine auxiliary drive device |
| JPS60153803U (en) * | 1984-03-24 | 1985-10-14 | マツダ株式会社 | Engine oil pump drive device |
-
1986
- 1986-02-10 JP JP1986018084U patent/JPH0218250Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62130111U (en) | 1987-08-17 |
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