JP2581810Y2 - Cam unit for driving fuel supply pump of diesel engine - Google Patents
Cam unit for driving fuel supply pump of diesel engineInfo
- Publication number
- JP2581810Y2 JP2581810Y2 JP1509293U JP1509293U JP2581810Y2 JP 2581810 Y2 JP2581810 Y2 JP 2581810Y2 JP 1509293 U JP1509293 U JP 1509293U JP 1509293 U JP1509293 U JP 1509293U JP 2581810 Y2 JP2581810 Y2 JP 2581810Y2
- Authority
- JP
- Japan
- Prior art keywords
- cam
- fuel supply
- supply pump
- diesel engine
- gear
- 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
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案はディーゼルエンジンの燃
料供給ポンプ駆動用カム装置に関し、当該駆動用カムを
鋼板の深絞り加工品にして生産性を高めるとともに、鋼
板を薄くし、且つスラスト側への変形を防止できるもの
を提供する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cam device for driving a fuel supply pump of a diesel engine. The driving cam is a deep drawn product of a steel plate to increase productivity, and the thickness of the steel plate is reduced to the thrust side. Provide a device capable of preventing deformation of the device.
【０００２】[0002]
【従来の技術及びその課題】一般に、ディーゼルエンジ
ンでは、燃料噴射カム軸などの回転軸に燃料噴射カムギ
ヤと燃料供給ポンプ駆動用カムを隣接支持し、燃料噴射
カム軸の回転で燃料噴射ポンプを駆動するとともに、燃
料供給ポンプを上記カムで駆動して燃料タンク内の燃料
を燃料噴射ポンプに圧送するようにしたものがある。2. Description of the Related Art In general, in a diesel engine, a fuel injection cam gear and a fuel supply pump driving cam are supported adjacent to a rotary shaft such as a fuel injection cam shaft, and the fuel injection pump is driven by rotation of the fuel injection cam shaft. In some cases, a fuel supply pump is driven by the cam to pump fuel in a fuel tank to a fuel injection pump.
【０００３】本考案はこのディーゼルエンジンの燃料供
給ポンプ駆動用カム装置を対象とし、その基本構造は、
図１、図４又は図５に示すように、ディーゼルエンジン
Ｅの回転軸１にギヤ２を固定し、このギヤ２の端面に燃
料供給ポンプ駆動用カム３を固定し、燃料供給ポンプ駆
動用カム３のカム面部８に燃料供給ポンプ１０の入力部
１１を接当可能に構成した形式のものである。The present invention is directed to a cam device for driving a fuel supply pump of a diesel engine, and its basic structure is as follows.
As shown in FIG. 1, FIG. 4 or FIG. 5, a gear 2 is fixed to a rotating shaft 1 of a diesel engine E, and a fuel supply pump driving cam 3 is fixed to an end face of the gear 2 to form a fuel supply pump driving cam. 3 is configured such that the input portion 11 of the fuel supply pump 10 can be brought into contact with the cam surface portion 8.
【０００４】この形式の従来技術としては、図５に示す
ように、燃料供給ポンプ駆動用カム３を厚みのある鋼板
の削り出しで形成したものが一般的である。当該従来技
術では、駆動用カム３を削り出し加工するため、切削加
工に時間がかかり、生産性が低い。As a prior art of this type, as shown in FIG. 5, a fuel supply pump driving cam 3 is generally formed by cutting a thick steel plate. In the related art, since the driving cam 3 is cut out, it takes a long time to perform the cutting, and the productivity is low.
【０００５】[0005]
【先行技術】そこで、図４に示すように、駆動用カム３
の基板部４の外周部５の外径側Ａに段落し用折曲げ部６
と環状円板部７を燃料噴射カムギヤ２に対して遠ざかる
外部側Ｃに向けてＬ字の段上げ状に屈曲形成し、この環
状円板部７から同じく外部側Ｃに短筒状カム面８を曲げ
出すことにより、当該駆動用カム３を薄い鋼板の深絞り
加工品に形成して、加工時間を大幅に短縮し、生産性を
高めることが考えられる。Therefore, as shown in FIG.
The bent portion 6 is set on the outer diameter side A of the outer peripheral portion 5 of the substrate portion 4.
And the annular disk portion 7 is formed to be bent in an L-shaped stepped shape toward the outer side C away from the fuel injection cam gear 2, and a short cylindrical cam surface 8 is similarly formed on the outer side C from the annular disk portion 7. , It is conceivable that the driving cam 3 is formed into a deep drawn product of a thin steel plate, the processing time is significantly reduced, and the productivity is increased.
【０００６】[0006]
【考案が解決しようとする課題】しかしながら、上記先
行技術では、短筒状カム面部８がスラスト側に変形して
位置ずれを起こし易いため、燃料供給ポンプ１０の入力
部１１に適正に接当し得ない虞れがある。また、鋼板を
厚くしてこのスラスト側への変形を防止しようとすれ
ば、深絞りの加工エネルギーが大きくなり、材料コスト
が上昇する。本考案は、駆動用カムの生産性を高めなが
ら、鋼板を薄く保持しながら、カム面部のスラスト側へ
の変形を防止することを技術的課題とする。However, in the above-mentioned prior art, the short cylindrical cam surface 8 is easily deformed toward the thrust side and is likely to be displaced, so that the short cylindrical cam surface 8 properly contacts the input unit 11 of the fuel supply pump 10. There is a possibility that it cannot be obtained. Further, if the steel plate is made thick to prevent the deformation to the thrust side, the processing energy for deep drawing increases, and the material cost increases. It is a technical object of the present invention to prevent deformation of a cam surface portion toward a thrust side while keeping a steel plate thin while increasing productivity of a driving cam.
【０００７】[0007]
【課題を解決するための手段】上記課題を達成するため
の手段を、実施例を示す図１〜図３により以下に説明す
る。即ち、本考案は前記基本構造のディーゼルエンジン
の燃料供給ポンプ駆動用カム装置において、上記燃料供
給ポンプ駆動用カム３の基板部４の外周部５から、補強
用短筒部６、環状円板部７及び短筒状カム面部８を順に
連続させて形成し、補強用短筒部６は、上記基板部４か
らギヤ２に対して遠ざかる外部側Ｃに曲げ出して構成さ
れ、環状円板部７は、上記補強用短筒部６から外径側Ａ
に曲げ出して構成され、短筒状カム面部８は、上記環状
円板部７からギヤ２に近付く内部側Ｄに曲げ出して構成
されたことを特徴とするものである。Means for achieving the above object will be described below with reference to FIGS. 1 to 3 showing an embodiment. That is, the present invention relates to a cam device for driving a fuel supply pump of a diesel engine having the basic structure described above, wherein a short cylindrical portion 6 for reinforcement, an annular disk portion, 7 and the short cylindrical cam surface portion 8 are formed continuously in order, and the reinforcing short cylindrical portion 6 is formed by bending out from the substrate portion 4 to the outer side C away from the gear 2. Is the outer diameter side A from the reinforcing short cylinder 6
And the short cylindrical cam surface portion 8 is formed by bending from the annular disk portion 7 to the inner side D approaching the gear 2.
【０００８】[0008]
【作用】燃料供給ポンプ駆動用カム３の基板部４の外周
部５から、補強用短筒部６、環状円板部７及び短筒状カ
ム面部８を順に連続させて形成するので、当該駆動用カ
ム３を薄い鋼板の深絞り加工で形成でき、加工時間を大
幅に短縮できる。 また、当該カム３の外周部５のうち
の、外端側の短筒状カム面部８は、上記環状円板部７か
らギヤ２に近付く内部側Ｄに曲げ出し形成され、当該短
筒状カム面部８・環状円板部７および補強用短筒部６が
断面コ字状に屈曲される。このため、上記先行技術に比
べて、鋼板製の短筒状カム面部８は、補強用短筒部６と
環状円板部７で補強されて剛性が高まるので、板厚が薄
いままでも、スラスト側への変形がなく位置ずれが抑制
されて、燃料供給ポンプ１０の入力部１１に適正に接当
する。The reinforcing short tubular portion 6, the annular disk portion 7, and the short tubular cam surface portion 8 are formed continuously from the outer peripheral portion 5 of the substrate portion 4 of the fuel supply pump driving cam 3 in this order. Cam 3 can be formed by deep drawing of a thin steel plate, and the processing time can be greatly reduced. The outer cylindrical portion 5 of the outer peripheral portion 5 of the cam 3 has a short cylindrical cam surface portion 8 formed by bending from the annular disk portion 7 to the inner side D approaching the gear 2. The face portion 8, the annular disk portion 7, and the reinforcing short tube portion 6 are bent in a U-shaped cross section. Therefore, compared with the prior art, the short cylindrical cam surface portion 8 made of steel plate is reinforced by the reinforcing short cylindrical portion 6 and the annular disk portion 7 to increase rigidity. There is no deformation to the side, the displacement is suppressed, and the fuel supply pump 10 properly contacts the input unit 11.
【０００９】[0009]
(1)燃料供給ポンプ駆動用カムを鋼板製の深絞り加工品
にできるので、上記従来技術に比べて、加工時間を大幅
に短縮し、生産性を高められる。 (2)燃料供給ポンプ駆動用カムの外周部をいわばコ字状
に屈曲して、短筒状カム面部が剛性を高めるため、上記
先行技術に比べて、鋼板の厚みを薄く保持しながら、短
筒状カム面部のスラスト側への変形を防止できる。(1) Since the fuel supply pump driving cam can be made of a steel sheet deep drawn product, the processing time can be significantly shortened and productivity can be increased as compared with the above-mentioned conventional technology. (2) The outer peripheral portion of the fuel supply pump driving cam is bent in a so-called U-shape so that the short cylindrical cam surface portion increases rigidity. Deformation of the cylindrical cam surface to the thrust side can be prevented.
【００１０】[0010]
【実施例】以下、本考案の実施例を図面に基づいて述べ
る。図１はディーゼルエンジンの燃料供給ポンプ駆動用
カム装置の縦断面図、図２はディーゼルエンジンの要部
縦断右側面図、図３は同ディーゼルエンジンの縦断正面
図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 is a vertical sectional view of a cam unit for driving a fuel supply pump of a diesel engine, FIG. 2 is a vertical right side view of a main part of the diesel engine, and FIG. 3 is a vertical front view of the diesel engine.
【００１１】図１及び２に示すように、縦型ディーゼル
エンジンＥにギヤ室１２とポンプ室１３を前後隣接状に
設け、両室の前後方向に燃料噴射カム軸１を貫通支持
し、燃料噴射カム軸１の前端部に燃料噴射カムギヤ２を
位置決め固定し、当該噴射カムギヤ２の前方に固定ボル
ト１６を介して鋼板製の燃料供給ポンプ駆動用カム３を
隣接支持し、ポンプ室１３に収容した燃料噴射ポンプ１
４を上記燃料噴射カム軸１に連動する。上記燃料噴射カ
ムギヤ２をアイドルギヤ１５を介してクランク軸に連動
するとともに、前記駆動用カム３の外周側のカム面部８
を燃料供給ポンプ１０の入力部１１に接当可能に構成す
る。当該燃料供給ポンプ１０はこのカム３で駆動され、
エンジンＥの燃料タンク内の燃料は前記燃料噴射ポンプ
１４に圧送供給される。As shown in FIGS. 1 and 2, the vertical diesel engine E is provided with a gear chamber 12 and a pump chamber 13 adjacent to each other in the front-rear direction. The fuel injection cam gear 2 was positioned and fixed to the front end of the cam shaft 1, and a steel plate fuel supply pump driving cam 3 was supported adjacent to the front of the injection cam gear 2 via a fixing bolt 16 and housed in the pump chamber 13. Fuel injection pump 1
4 is linked to the fuel injection camshaft 1. The fuel injection cam gear 2 is interlocked with a crankshaft via an idle gear 15 and a cam surface 8 on the outer peripheral side of the driving cam 3.
Is configured to be able to contact the input unit 11 of the fuel supply pump 10. The fuel supply pump 10 is driven by the cam 3,
The fuel in the fuel tank of the engine E is supplied under pressure to the fuel injection pump 14.
【００１２】一方、図１に示すように、上記燃料供給ポ
ンプ駆動用カム３は、円板状の基板部４の外周部５か
ら、補強用短筒部６、環状円板部７及び短筒状カム面部
８を順に断面略コ字状に連続させて形成して、薄い鋼板
の深絞り加工品として構成される。上記補強用短筒部６
は、上記基板部４から燃料噴射カムギヤ２に対して遠ざ
かる外部側Ｃ(即ち、前側)に直交状に曲げ出して構成さ
れる。上記環状円板部７は、当該補強用短筒部６から外
径側Ａに直交状に曲げ出して構成される。上記短筒状カ
ム面部８は、当該環状円板部７から燃料噴射カムギヤ２
に近付く内部側Ｄ(即ち、後側)に直交状に曲げ出して構
成され、前記補強用短筒部６に平行に形成される。但
し、駆動用カム３を燃料噴射カムギヤ２に組み付けた場
合に、このカム面部８の後端部８ａは、燃料噴射カムギ
ヤ２の歯２ａに干渉しないように、駆動用カム３の基板
部４から少し外部側Ｃ(即ち、前側)に退出させて形成さ
れる。On the other hand, as shown in FIG. 1, the fuel supply pump driving cam 3 is composed of an outer peripheral portion 5 of a disk-shaped substrate portion 4, a reinforcing short cylindrical portion 6, an annular disk portion 7, and a short cylindrical portion. The cam-shaped surface portions 8 are successively formed so as to have a substantially U-shaped cross section in order, and are configured as a deep drawn product of a thin steel plate. The reinforcing short tube 6
Is formed so as to be bent orthogonally to an outer side C (that is, a front side) away from the substrate portion 4 with respect to the fuel injection cam gear 2. The annular disk portion 7 is formed by bending the reinforcing short tubular portion 6 orthogonally to the outer diameter side A. The short cylindrical cam surface portion 8 is provided between the annular disk portion 7 and the fuel injection cam gear 2.
, And is formed so as to be orthogonally bent toward an inner side D (that is, a rear side) approaching, and is formed parallel to the reinforcing short tubular portion 6. However, when the driving cam 3 is assembled to the fuel injection cam gear 2, the rear end 8 a of the cam surface 8 is moved from the substrate 4 of the driving cam 3 so as not to interfere with the teeth 2 a of the fuel injection cam gear 2. It is formed by slightly retreating to the outer side C (that is, the front side).
【００１３】そこで、本実施例の燃料供給ポンプ駆動用
カム装置の機能を説明する。燃料供給ポンプ駆動用カム
３を薄鋼板製の深絞り加工品とするので、冒述の従来技
術(図５参照)に比べて、加工時間を大幅に短縮して、生
産性を向上できる。また、当該カム３の外端側の短筒状
カム面部８は、上記環状円板部７から燃料噴射カムギヤ
２に近付く内部側Ｄに曲げ出し形成され、当該外周部５
はいわばコ字状に屈曲される。このため、上記先行技術
に比べて、短筒状カム面部８は、補強用短筒部６と環状
円板部７で補強されて剛性が高まるため、前記先行技術
(図４参照)に比べて、鋼板の厚みを薄く保持しながら、
短筒状カム面部のスラスト側への変形は良好に防止され
る。Therefore, the function of the cam device for driving the fuel supply pump according to the present embodiment will be described. Since the fuel supply pump driving cam 3 is a deep drawn product made of a thin steel plate, the processing time can be greatly reduced and productivity can be improved as compared with the above-mentioned conventional technology (see FIG. 5). Further, the short cylindrical cam surface portion 8 on the outer end side of the cam 3 is formed to be bent from the annular disk portion 7 to the inner side D approaching the fuel injection cam gear 2, and the outer peripheral portion 5 is formed.
It is bent in a U-shape. For this reason, compared with the prior art, the short cylindrical cam surface 8 is reinforced by the reinforcing short cylindrical portion 6 and the annular disk portion 7 to increase rigidity.
(See Fig. 4)
Deformation of the short cylindrical cam surface to the thrust side is favorably prevented.
【図１】ディーゼルエンジンの燃料供給ポンプ駆動用カ
ム装置の縦断面図である。FIG. 1 is a longitudinal sectional view of a cam device for driving a fuel supply pump of a diesel engine.
【図２】ディーゼルエンジンのギヤケースおよび燃料噴
射ポンプハウジングの要部縦断右側面図である。FIG. 2 is a vertical sectional right side view of a main part of a gear case and a fuel injection pump housing of a diesel engine.
【図３】同ディーゼルエンジンのギヤケース部の要部縦
断正面図である。FIG. 3 is a longitudinal sectional front view of a main part of a gear case of the diesel engine.
【図４】先行技術を示す図１の相当図である。FIG. 4 is an equivalent view of FIG. 1 showing the prior art.
【図５】従来技術を示す図１の相当図である。FIG. 5 is a diagram corresponding to FIG. 1 showing a conventional technique.
１…回転軸、２…ギヤ、３…燃料供給ポンプ駆動用カ
ム、４…３の基板部、５…４の外周部、６…３の補強用
短筒部、７…３の環状円板部、８…３の短筒状カム面
部、１０…燃料供給ポンプ、１１…１０の入力部、Ｅ…
ディーゼルエンジン。DESCRIPTION OF SYMBOLS 1 ... Rotating shaft, 2 ... Gear, 3 ... Cam for driving a fuel supply pump, 4 ... 3 Base part, 5 ... 4 outer peripheral part, 6 ... 3 Reinforcement short cylinder part, 7 ... 3 annular disk part , 8 ... 3 short cylindrical cam surface portions, 10 ... fuel supply pump, 11 ... 10 input portions, E ...
diesel engine.
フロントページの続き (72)考案者 萬羽 俊一 大阪府堺市石津北町64株式会社クボタ 堺製造所内 (72)考案者 吉田 鉱三 大阪府堺市石津北町64株式会社クボタ 堺製造所内 (56)参考文献 実開 昭63−191212（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) F02M 37/06Continuing on the front page (72) Inventor Shunichi Manwa 64 Ishizukitamachi, Sakai City, Osaka Prefecture, Kubota Sakai Factory (72) Inventor Kozo Yoshida 64 Ishizukitamachi, Sakai City, Osaka Prefecture 64 Kubota Sakai Factory, Ltd. (56) Reference Literature Japanese Utility Model Application 63-191212 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) F02M 37/06
Claims (1)
ギヤ(２)を固定し、このギヤ(２)の端面に燃料供給ポン
プ駆動用カム(３)を固定し、燃料供給ポンプ駆動用カム
(３)のカム面部(８)に燃料供給ポンプ(１０)の入力部
(１１)を接当可能に構成したディーゼルエンジンの燃料
供給ポンプ駆動用カム装置において、 上記燃料供給ポンプ駆動用カム(３)の基板部(４)の外周
部(５)から、補強用短筒部(６)、環状円板部(７)及び短
筒状カム面部(８)を順に連続させて形成し、 補強用短筒部(６)は、上記基板部(４)からギヤ(２)に対
して遠ざかる外部側(Ｃ)に曲げ出して構成され、 環状円板部(７)は、上記補強用短筒部(６)から外径側
(Ａ)に曲げ出して構成され、 短筒状カム面部(８)は、上記環状円板部(７)からギヤ
(２)に近付く内部側(Ｄ)に曲げ出して構成されたことを
特徴とするディーゼルエンジンの燃料供給ポンプ駆動用
カム装置。A gear (2) is fixed to a rotary shaft (1) of a diesel engine (E), and a fuel supply pump driving cam (3) is fixed to an end face of the gear (2). Cam
Input part of fuel supply pump (10) on cam surface part (8) of (3)
A fuel supply pump driving cam device for a diesel engine configured to be capable of contacting (11), wherein a reinforcing short cylinder is provided from an outer peripheral portion (5) of a substrate portion (4) of the fuel supply pump driving cam (3). A portion (6), an annular disk portion (7) and a short cylindrical cam surface portion (8) are formed continuously in order, and the reinforcing short cylindrical portion (6) is formed from the substrate portion (4) to the gear (2). The annular disk portion (7) is bent outward to the outer side (C) away from the outer cylindrical portion (6).
(A), and the short cylindrical cam surface portion (8) is provided with a gear from the annular disk portion (7).
A cam device for driving a fuel supply pump of a diesel engine, wherein the cam device is formed so as to be bent toward an inner side (D) approaching (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1509293U JP2581810Y2 (en) | 1993-03-05 | 1993-03-05 | Cam unit for driving fuel supply pump of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1509293U JP2581810Y2 (en) | 1993-03-05 | 1993-03-05 | Cam unit for driving fuel supply pump of diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0669356U JPH0669356U (en) | 1994-09-30 |
| JP2581810Y2 true JP2581810Y2 (en) | 1998-09-24 |
Family
ID=11879206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1509293U Expired - Fee Related JP2581810Y2 (en) | 1993-03-05 | 1993-03-05 | Cam unit for driving fuel supply pump of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581810Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001214829A (en) * | 2000-01-31 | 2001-08-10 | Bosch Automotive Systems Corp | Fuel injection pump |
| JP3640653B2 (en) * | 2002-10-03 | 2005-04-20 | 東光電気株式会社 | Drainage body |
-
1993
- 1993-03-05 JP JP1509293U patent/JP2581810Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0669356U (en) | 1994-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |