JPH034724Y2 - - Google Patents
Info
- Publication number
- JPH034724Y2 JPH034724Y2 JP1983169516U JP16951683U JPH034724Y2 JP H034724 Y2 JPH034724 Y2 JP H034724Y2 JP 1983169516 U JP1983169516 U JP 1983169516U JP 16951683 U JP16951683 U JP 16951683U JP H034724 Y2 JPH034724 Y2 JP H034724Y2
- Authority
- JP
- Japan
- Prior art keywords
- receiving member
- thrust receiving
- camshaft
- thrust
- flange
- 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
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】
本考案はエンジンのシリンダヘツドによつて軸
支されるカムシヤフトにおけるスラスト受け構造
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thrust receiving structure in a camshaft supported by a cylinder head of an engine.
この種スラスト受け構造として実開昭53−
71110号公報に掲載される先行技術がある。これ
は第１図に示すようにカムシヤフトａの端部に鍔
部ｂを形成する一方、シリンダヘツドｃの端面に
カバーｄをボルト付けし、このカバーｄの内側面
を前記鍔部ｂの側面に当接させることによりカム
シヤフトａのスラストを支承しうるように構成さ
れている。ところがこの先行技術によれば、高精
度の当接面を加工することが困難なカバーｄの内
側面でスラストを支承しているため、精度上問題
がある。又高精度の当接面を得ようとすれば、そ
の加工に要するコストが非常に高くなるという問
題がある。又カバーｄをシリンダヘツドｃの端面
にボルト付けしているので、カバーｄの周辺部を
延長してここにボルトｅ，ｅを挿通するための孔
を設けなければならず、カバーｄが大形になり、
重量アツプにつながるという問題もある。 This type of thrust receiving structure was developed in 1983.
There is a prior art published in Publication No. 71110. As shown in Fig. 1, a flange b is formed at the end of the camshaft a, a cover d is bolted to the end face of the cylinder head c, and the inner surface of the cover d is attached to the side surface of the flange b. The thrust of the camshaft a can be supported by bringing them into contact with each other. However, according to this prior art, there is a problem in terms of accuracy because the thrust is supported on the inner surface of the cover d, where it is difficult to machine a highly accurate contact surface. Furthermore, if a highly accurate abutting surface is to be obtained, there is a problem in that the cost required for machining it becomes extremely high. Also, since the cover d is bolted to the end face of the cylinder head c, it is necessary to extend the periphery of the cover d and provide holes for inserting the bolts e, e, which makes the cover d large. become,
There is also the problem of increased weight.
本考案は上記先行技術の諸問題点を一挙に解消
することを目的とし、カムシヤフトの端部近傍に
鍔部を形成する一方、シリンダヘツドの軸受部の
内径を外側から大径部、中径部、小径部の３段に
段付き状に構成し、前記鍔部を前記中径部に位置
させる一方、リング状のスラスト受け部材を前記
大径部に位置させると共にその一側面が大径部と
中径部との段付面に当接するように配した状態
で、ラジアル方向のネジ止め手段を用いて前記軸
受部に取付け、前記鍔部の一側面が前記スラスト
受け部材の側面に、他側面が中径部と小径部との
段付面に夫々当接することを特徴とする。 The purpose of the present invention is to solve the problems of the above-mentioned prior art all at once.The flange is formed near the end of the camshaft, and the inner diameter of the bearing part of the cylinder head is divided from the outside into the large diameter part and the medium diameter part. , the small diameter part is configured in a stepped manner with three stages, and the collar part is located in the medium diameter part, while the ring-shaped thrust receiving member is located in the large diameter part, and one side thereof is located in the large diameter part. It is attached to the bearing part using screwing means in the radial direction in a state where it is arranged so as to be in contact with the stepped surface of the medium diameter part, and one side of the flange is on the side of the thrust receiving member, and the other side is attached to the side of the thrust receiving member. are characterized in that they abut on stepped surfaces of the medium diameter portion and the small diameter portion, respectively.
以下本考案を図面に示す実施例に基き具体的に
説明する。 The present invention will be explained in detail below based on embodiments shown in the drawings.
第２図及び第３図に示す実施例は、カムシヤフ
ト１のタイミングプーリ２を取付ける側の端部近
傍に鍔部３を形成している。タイミングプーリ２
は取付金具４ａ及びボルト４ｂによつて、カムシ
ヤフト１の端面に固定されている。カムシヤフト
１の前記端部はシリンダヘツド５の円筒状軸受部
６に挿通され、前記鍔部３はこの軸受部６内に位
置している。前記軸受部６は、内径が３段に亘つ
て変化し、タイミングプーリ２側の大径部７、カ
ム側の小径部９及びこれらの中間の中径部８を有
している。この中径部８の内径は前記鍔部３の外
径より若干大きく、その幅は前記鍔部３の幅と略
同一である。 In the embodiment shown in FIGS. 2 and 3, a flange 3 is formed near the end of the camshaft 1 on the side where the timing pulley 2 is attached. timing pulley 2
is fixed to the end surface of the camshaft 1 by a mounting bracket 4a and a bolt 4b. The end portion of the camshaft 1 is inserted into a cylindrical bearing portion 6 of the cylinder head 5, and the collar portion 3 is located within this bearing portion 6. The bearing portion 6 has an inner diameter that changes over three stages, and has a large diameter portion 7 on the timing pulley 2 side, a small diameter portion 9 on the cam side, and a medium diameter portion 8 in between. The inner diameter of this medium diameter portion 8 is slightly larger than the outer diameter of the flange portion 3, and its width is approximately the same as the width of the flange portion 3.
前記中径部８内には前記鍔部３が配置され、そ
の一側面が前記中径部８と前記小径部９との間の
段付面１０に当接して、カムシヤフト１の第２図
右方向の移動が拘束されるようにしている。又前
記大径部７の中径部８に隣接する部位にはこれに
嵌合するリング状のスラスト受け部材１１がその
一側面が大径部７と中径部８との段付面に当接す
るように挿入され、その側面１２が前記鍔部３の
他側面に当接するように構成されている。前記ス
ラスト受け部材１１は焼結合金製で、第３図に示
すような形状に一体成形されると共に、ラジアル
方向にネジ孔１５が形成されている。又シリンダ
ヘツド５には前記ネジ孔１５に合致するボルト挿
通孔１３が形成され、この孔１３に挿通したボル
ト１４を前記ネジ孔１５に螺合することによつて
スラスト受け部材１１を前記軸受部６に固定して
いる。従つて、カムシヤフト１の第２図左方向の
移動はスラスト受け部材１１によつて拘束され、
カムシヤフト１に生ずる同方向のスラストはスラ
スト受け部材１１によつて支承される。 The flange portion 3 is disposed within the medium diameter portion 8, and one side of the flange portion 3 is in contact with a stepped surface 10 between the medium diameter portion 8 and the small diameter portion 9, so that the flange portion 3 is arranged on the right side of the camshaft 1 in FIG. Movement in the direction is restricted. Further, a ring-shaped thrust receiving member 11 that fits in a portion adjacent to the medium diameter portion 8 of the large diameter portion 7 has one side thereof in contact with a stepped surface between the large diameter portion 7 and the medium diameter portion 8. It is inserted so as to be in contact with it, and its side surface 12 is configured to abut on the other side surface of the flange portion 3. The thrust receiving member 11 is made of a sintered metal, is integrally molded into the shape shown in FIG. 3, and has a screw hole 15 formed in the radial direction. Further, the cylinder head 5 is formed with a bolt insertion hole 13 that matches the screw hole 15, and by screwing the bolt 14 inserted through the hole 13 into the screw hole 15, the thrust receiving member 11 is inserted into the bearing portion. It is fixed at 6. Therefore, the movement of the camshaft 1 in the left direction in FIG. 2 is restrained by the thrust receiving member 11.
The thrust generated in the same direction on the camshaft 1 is supported by the thrust receiving member 11.
前記軸受部６の大径部７にはリング状のオイル
シール１６を挿着し、軸受部６とカムシヤフト１
との間をシールしている。尚、１７はガスケツト
である。 A ring-shaped oil seal 16 is inserted into the large diameter portion 7 of the bearing portion 6, and the bearing portion 6 and the camshaft 1 are connected to each other.
There is a seal between the two. Note that 17 is a gasket.
本実施例で採用しているスラスト受け部材１１
は第３図に示すように、内径中心を外径中心に対
し偏心させたリング形状とすると共にその最大肉
厚部に前記ネジ孔１５を設けて、材料使用量の節
減と軽量化を図つている。 Thrust receiving member 11 adopted in this embodiment
As shown in Fig. 3, the ring is shaped like a ring with the center of the inner diameter eccentric to the center of the outer diameter, and the screw hole 15 is provided in the thickest part of the ring to reduce the amount of material used and the weight. There is.
本考案は上記実施例に示す外、種々の態様に構
成することができる。例えば、上記実施例ではボ
ルト１４によつてリング状のスラスト受け部材１
１をシリンダヘツド５の軸受部６にラジアル方向
にネジ止めしているが、このネジ止め手段をミゾ
付止めネジなどによつて構成することもできる。 The present invention can be configured in various ways other than those shown in the above embodiments. For example, in the above embodiment, the ring-shaped thrust receiving member 1 is
1 is screwed in the radial direction to the bearing portion 6 of the cylinder head 5, but this screwing means may also be constituted by a set screw with a groove or the like.
本考案は上記構成を有するので、次のような効
果を奏することができる。 Since the present invention has the above configuration, the following effects can be achieved.
スラスト受け部材の側面でカムシヤフトのス
ラストを支承しうるように構成されているの
で、高精度の当接面を容易に形成することがで
き、加工コストを節減することができる。又部
品点数の削減によりコストダウンを図ることが
できる。 Since the thrust receiving member is configured to support the thrust of the camshaft on the side surface thereof, a highly accurate contact surface can be easily formed, and processing costs can be reduced. Furthermore, cost reduction can be achieved by reducing the number of parts.
先行技術におけるカバーに比較し、小形、軽
量なスラスト受け部材によつてカムシヤフトの
スラストを支承しうるように構成されているの
で、コンパクト化、軽量化を図ることができ
る。 Compared to the cover in the prior art, since the thrust receiving member is smaller and lighter in size and is configured to support the thrust of the camshaft, the cover can be made more compact and lighter.
スラスト受け部材とカムシヤフトの鍔部との
当接面間の精度を向上させることができるの
で、油洩れを防ぐ上で効果がある。しかもスラ
スト受け部材の外側方にオイルシールを挿着す
るのに適した構造とすることが容易であるの
で、油洩れを確実に防ぐのに適している。 Since the precision between the contact surfaces between the thrust receiving member and the flange of the camshaft can be improved, it is effective in preventing oil leakage. Moreover, since it is easy to create a structure suitable for inserting an oil seal on the outside of the thrust receiving member, it is suitable for reliably preventing oil leakage.
カムシヤフトのスラスト力の一方向成分は中
径部と小径部との段付面によつてシリンダヘツ
ドの軸受部によつて支承され、他方向成分はス
ラスト受け部材によつて支承される。従つてス
ラスト受け部材に作用するスラスト力は一方向
のみであるので、ネジ止め部に加わるスラスト
力が、両方向のスラスト力が加わる場合に比較
して半減し、ネジの緩みや剪断破壊等の不具合
が生じにくく、スラスト受け部材の耐久性が向
上する。しかも、リング状のスラスト受け部材
は、その一側面が前記軸受部の大径部と中径部
との段付面に当接するようにして、軸受部の大
径部において安定強固に支持されているので、
この面からもスラスト受け部材の耐久性が向上
する。 One direction component of the thrust force of the camshaft is supported by the bearing part of the cylinder head by the stepped surfaces of the medium diameter part and the small diameter part, and the other direction component is supported by the thrust receiving member. Therefore, since the thrust force acting on the thrust receiving member is only in one direction, the thrust force applied to the screwed part is halved compared to when thrust force is applied in both directions, which can lead to problems such as loosening of screws and shear failure. The durability of the thrust receiving member is improved. Moreover, the ring-shaped thrust receiving member is stably and firmly supported in the large diameter portion of the bearing portion, with one side of the ring-shaped thrust receiving member in contact with the stepped surface of the large diameter portion and the medium diameter portion of the bearing portion. Because there are
From this aspect as well, the durability of the thrust receiving member is improved.
スラスト受け部材の位置決めは、その一側面
が前記段付面に当接することによつて行なわれ
るので、スラスト受け部材の位置決めを正確且
つ迅速に行なうことができ、ネジ止め作業も迅
速に行なうことができる。又スラスト受け部材
が正確な位置に位置決めされるので、カムシヤ
フトのスラスト受けを適正に行なう上でも有利
である。 The positioning of the thrust receiving member is performed by one side of the thrust receiving member coming into contact with the stepped surface, so the positioning of the thrust receiving member can be performed accurately and quickly, and the screw fastening work can also be performed quickly. can. Furthermore, since the thrust receiving member is positioned at an accurate position, it is advantageous in properly receiving the thrust of the camshaft.
第１図は先行技術の概略図、第２図は本考案の
実施例の縦断側面図、第３図はそのリング状部材
を示す斜視図である。
１……カムシヤフト、３……鍔部、５……シリ
ンダヘツド、６……軸受部、１１……スラスト受
け部材、１４……ボルト、１５……ネジ孔。
FIG. 1 is a schematic diagram of the prior art, FIG. 2 is a longitudinal sectional side view of an embodiment of the present invention, and FIG. 3 is a perspective view showing a ring-shaped member thereof. DESCRIPTION OF SYMBOLS 1... Camshaft, 3... Flam part, 5... Cylinder head, 6... Bearing part, 11... Thrust receiving member, 14... Bolt, 15... Screw hole.
Claims (1)
方、シリンダヘツドの軸受部の内径を外側から大
径部、中径部、小径部の３段に段付き状に構成
し、前記鍔部を前記中径部に位置させる一方、リ
ング状のスラスト受け部材を前記大径部に位置さ
せると共にその一側面が大径部と中径部との段付
面に当接するように配した状態で、ラジアル方向
のネジ止め手段を用いて前記軸受部に取付け、前
記鍔部の一側面が前記スラスト受け部材の側面
に、他側面が中径部と小径部との段付面に夫々当
接することを特徴とするエンジンのカムシヤフト
スラスト受け構造。 A flange is formed near the end of the camshaft, and the inner diameter of the bearing portion of the cylinder head is configured in three steps from the outside: a large diameter portion, a medium diameter portion, and a small diameter portion, and the flange portion is formed in three steps from the outside. While the ring-shaped thrust receiving member is located in the large diameter part and one side of the ring-shaped thrust receiving member is placed in contact with the stepped surface of the large diameter part and the medium diameter part, It is attached to the bearing part using screw fastening means, and one side of the flange abuts a side surface of the thrust receiving member, and the other side abuts the stepped surfaces of the medium diameter part and the small diameter part, respectively. Engine camshaft thrust support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16951683U JPS6077705U (en) | 1983-10-31 | 1983-10-31 | Engine camshaft thrust support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16951683U JPS6077705U (en) | 1983-10-31 | 1983-10-31 | Engine camshaft thrust support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6077705U JPS6077705U (en) | 1985-05-30 |
| JPH034724Y2 true JPH034724Y2 (en) | 1991-02-07 |
Family
ID=30370317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16951683U Granted JPS6077705U (en) | 1983-10-31 | 1983-10-31 | Engine camshaft thrust support structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6077705U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5371113U (en) * | 1976-11-16 | 1978-06-14 |
-
1983
- 1983-10-31 JP JP16951683U patent/JPS6077705U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6077705U (en) | 1985-05-30 |
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