JPS6012934Y2 - fuel injection pump - Google Patents
fuel injection pumpInfo
- Publication number
- JPS6012934Y2 JPS6012934Y2 JP18321879U JP18321879U JPS6012934Y2 JP S6012934 Y2 JPS6012934 Y2 JP S6012934Y2 JP 18321879 U JP18321879 U JP 18321879U JP 18321879 U JP18321879 U JP 18321879U JP S6012934 Y2 JPS6012934 Y2 JP S6012934Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- plunger
- recess
- pump body
- lever
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関用の一燃料噴射ボンカト幽し、更に
詳しくは□、タペットとカム軸と番ポシプ本体から分離
した形式のボ゛シシＡ’を燃料噴射ポ：Ｊ／プに関する
ものである。[Detailed description of the invention] The present invention uses a fuel injection valve for internal combustion engines, and more specifically, □, a fuel injection port with a tappet, a camshaft, and a body A' separated from the pump body: This is related to J/P.
本考案の目的は、タペット及びカム軸をポンプ本体から
分離した形式の燃料噴射ポンプにおける噴射量調整機構
をタペットの１部を利用して構成することによって燃料
噴射ポンプの小型化及び部品点数の低減を計ることにあ
る。The purpose of this invention is to downsize the fuel injection pump and reduce the number of parts by configuring the injection amount adjustment mechanism using a part of the tappet in a fuel injection pump in which the tappet and camshaft are separated from the pump body. The purpose is to measure the
以下、添付の図面を参照して本考案の実施例にかかる燃
料噴射ポンプを説明する。Hereinafter, a fuel injection pump according to an embodiment of the present invention will be described with reference to the accompanying drawings.
第１図において符号１は燃料噴射ポンプのポンプ本体、
２はタペット、３はカム軸である。In FIG. 1, reference numeral 1 denotes the pump body of the fuel injection pump;
2 is a tappet, and 3 is a camshaft.
この燃料噴射ポンプにおいては、タペット２及びカム軸
３１ヨポンプ本体１から分離されて機関本体２０傭１・
と装着きれている二
前記ポンプ本体１の内部には、プランジャ４を摺動自在
に嵌装す゛るための摺動穴５が貫設されている。In this fuel injection pump, the tappet 2 and camshaft 31 are separated from the pump body 1, and the engine body 20,
A sliding hole 5 for slidably fitting the plunger 4 is provided in the inside of the pump body 1, which is completely attached to the pump body 1.
即ち、このポンプ本体１は、プランジャ摺動用のノ々レ
ルを嫌珀シている。That is, this pump body 1 does not have a noreru for sliding the plunger.
゛°：該摺動穴５には、下方よりプランジャ４が摺
動６在に嵌挿されるとともに、摺動穴５におけ′るプ１
□ −３ｌ イ）
ランジャ頂部４ムに臨む二端側は、吐出弁６を嵌挿する
ための受入５ａとされそいる。゛°: The plunger 4 is slidably inserted into the sliding hole 5 from below, and the plunger 4 is inserted into the sliding hole 5 from below.
□ -3l A) The two ends facing the top 4m of the runger are likely to be used as a receiving 5a for inserting the discharge valve 6.
゛こめ゛吐出＊ ６ ｉｌ、”Ｍ ”ｙプ本
体ｊの上端部に螺着される吐出介挿え７友び吐出弁バネ
８によって前記受入″５ａｉこ嵌装固定される。The discharge insert 7 and the discharge valve spring 8 screw into the upper end of the main body j of the discharge valve body j to fit and fix the discharge valve spring 8.
冬、ポンプ本体１の下端部には、プランジャ戻しバネ９
用のバネ座１０及びバネ座１ｏａ申４部より垂設さ訃１
本内筒１１が一体に形式′□されてぃ□ 旨 ：
ｉ ・
る。In winter, a plunger return spring 9 is attached to the lower end of the pump body 1.
The spring seat 10 and the spring seat 1 hanging from the 4th part of the spring seat 1
The inner cylinder 11 is integrally formed.
i・ru.
□□更］と、□前記ブラシツヤ４′の下端部に１よ、最
下端にプランジャ４を噴射量調節のために回動操作する
噴射量加減用のレバー１４が取付けられ、該レバー１４
の直上位に形式された鍔部１５の上方に円盤状のバネ受
１６が遊嵌され、更に該バネ受１６の直上位にプランジ
ャ抜は止め用のリング体１７が嵌着されている。□□Additional] and □A lever 14 for adjusting the injection amount is attached to the lower end of the brush gloss 4' to rotate the plunger 4 to adjust the injection amount.
A disk-shaped spring receiver 16 is loosely fitted above the flange 15 formed directly above the plunger, and a ring body 17 for preventing the plunger from being removed is fitted directly above the spring receiver 16.
即ち、前記バネ受１６は、鍔部１５とリング体１７との
間に遊嵌係止されている。That is, the spring receiver 16 is loosely fitted and locked between the collar portion 15 and the ring body 17.
しかして、ポンプ本体１のバネ座１ｏとバネ受１６との
間にはプランジャ戻しバネ９が介設され、これによって
ポンプ本体１とプランジャ４とが一体的に結合される。Thus, a plunger return spring 9 is interposed between the spring seat 1o of the pump body 1 and the spring receiver 16, and thereby the pump body 1 and the plunger 4 are integrally coupled.
一方、プランジャ４下端及びバネ受１６を軸方向上方に
押圧するタペット２の上面には、第２図に示すように前
記バネ受１６の下端側外周を嵌合せしめるための嵌合凹
部１８と該嵌合凹部１８の中心部にあって前記レバー１
４の回動中心が係入する円形凹部２．・６と該円形凹部
２６の一側からタペット２外周にかけて扇形に開口する
切欠凹部１９とが形成されている。On the other hand, on the upper surface of the tappet 2 that presses the lower end of the plunger 4 and the spring receiver 16 upward in the axial direction, there is a fitting recess 18 for fitting the outer periphery of the lower end of the spring receiver 16, as shown in FIG. The lever 1 is located in the center of the fitting recess 18.
A circular recess 2 into which the center of rotation of 4 engages. 6 and a notch recess 19 that opens in a fan shape from one side of the circular recess 26 to the outer periphery of the tappet 2.
この切欠凹部１９内には、プランジャ４下端のレバー１
４が弧回動自在に係入される。In this notched recess 19, there is a lever 1 at the lower end of the plunger 4.
4 is engaged so as to be rotatable in an arc.
そして前記切欠凹部１９の両側面１９ａ、１９ｂは、レ
バー１４の回動範囲（即ち、噴射量の上下限）を規制す
るようにされている。Both side surfaces 19a and 19b of the notched recess 19 are adapted to restrict the rotation range of the lever 14 (that is, the upper and lower limits of the injection amount).
このタペット２は、その下面にカム軸３を当接する如く
して、機関本体２０側に上下動自在に装着されており、
更にタペット２外周に形成された縦溝２２内に機関本俸
２０側に固着されたピン２３を臨ましめることによって
回り止めされてい□
る。This tappet 2 is mounted on the engine main body 20 side so as to be movable up and down, with a camshaft 3 in contact with its lower surface.
Further, the tappet 2 is prevented from rotating by exposing a pin 23 fixed to the engine main shaft 20 side in a vertical groove 22 formed on the outer periphery of the tappet 2.
そして、ポンプ本体１を機関本体２０に取付けた状部に
おいては、レバー１４は夕でット２よ面の側内凹部１９
ｉよび円形凹部２６に係入され、バネ受１６はタペット
２上面の嵌合凸部１８に嵌合されるようになっている。In the state where the pump body 1 is attached to the engine body 20, the lever 14 is located in a side recess 19 on the side of the pump body 2.
i and the circular recess 26, and the spring receiver 16 is fitted into the fitting projection 18 on the upper surface of the tappet 2.
′ １従って、カム軸３によるタペット の揺動に
伴ってプランジャ４及びバネ受１ となって上下
動せしめられるが、こ 受１６は嵌合凹部１６
によって半径方向の されることとなり、プラ
ンジャ４外周とバネ受１６内周とが接触することがない
。'1 Therefore, as the tappet swings by the camshaft 3, the plunger 4 and the spring receiver 1 are moved up and down.
As a result, the outer periphery of the plunger 4 and the inner periphery of the spring receiver 16 do not come into contact with each other.
このため、プランジャ４の上下動中においても、レバー
１４によって容易にてランジャ４を回動操作することが
でき、噴射量の調整を容易且つ円滑に行ない得る。Therefore, even when the plunger 4 is moving up and down, the plunger 4 can be easily rotated by the lever 14, and the injection amount can be easily and smoothly adjusted.
尚、符号２４は油逃し孔、２５は油通路である。In addition, the reference numeral 24 is an oil relief hole, and the reference numeral 25 is an oil passage.
続いて本考案の燃料噴射ポンプの効果を以下に列記する
。Next, the effects of the fuel injection pump of the present invention will be listed below.
即ち、本考案によれば、
（１） ポンプ本体１の内部を往復摺動するプランジ
ャ４の下端に、該プランジャ４を回動操作する噴射量加
減用のレバー１４を取付ける一方、タペット２上面に前
記レバー１４の回動中心が係入する円形凹部２６と該円
形凹部２６の一側から外方に連続し且つ前記レバー１４
を係入すべき扇形の切欠凹部１空を形成したので、該り
欠凹部１９および円形凹部２６の深さ分だけポンプ本体
１を短く組付けることができ、燃料噴射ポンプの小型化
を計ることができる、
（２）前記切欠凹部１９の両端面１９ａ、１９ｂによっ
てレバー１４あ回め範囲’＝＋＃シ得るようにしていう
ので、噴射量の、上隅、１下限を規制する特別な部材が
不要となり、且？従来ρ糸ツシュ界燃料噴射ボン力÷お
けるランクの如く怪力を計り得るとともに、ボン
の小型化及びコストダウンに一層寄与する
等の実用的な効果がある。That is, according to the present invention, (1) A lever 14 for adjusting the injection amount that rotates the plunger 4 is attached to the lower end of the plunger 4 that reciprocates inside the pump body 1, and a lever 14 for controlling the injection amount is attached to the upper surface of the tappet 2. A circular recess 26 into which the rotation center of the lever 14 engages, and a circular recess 26 that continues outward from one side of the circular recess 26 and that
Since the fan-shaped notch recess 1 into which the fuel injection pump is inserted is formed, the pump main body 1 can be assembled shorter by the depth of the recess 19 and the circular recess 26, thereby reducing the size of the fuel injection pump. (2) Since both end surfaces 19a and 19b of the notched recess 19 allow the lever 14 to be rotated within a range of + No longer needed, and? In addition to being able to measure superhuman strength like the rank in the conventional ρ-thread world fuel injection bomb force ÷
This has practical effects such as further contributing to miniaturization and cost reduction.
第１四は本考案の実施例にかかる燃料噴射ポンプの縦断
面図、第２図は第１図り燃料噴射ポンプの要部分解斜視
図である。
。１・・・・・・ポンプ本体、２・・・・・・タペ゛イ
ト、３・・・・・・カム軸、４・・・・・・プランジャ
、１４・・・・・ルバ〒、１９・・・・・・切欠凹部、
１９ａ、１９ｂ・・：・・−切欠凹部端面、２６・・・
・・・円形凹部。14 is a longitudinal cross-sectional view of a fuel injection pump according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of essential parts of the fuel injection pump shown in FIG. 1. . 1... Pump body, 2... Tapeite, 3... Camshaft, 4... Plunger, 14... Lever, 19 ...notch recess,
19a, 19b...:...-notch recess end face, 26...
...Circular recess.
Claims (1)
形式の燃料噴射ポンプであって、前記ポンプ′＊体１゛
の内部を往復摺動するプラ“ゾ）士４の下端に、該プラ
ンジャ４を向勤操作する噴射量加減用のレバ二１４を取
付け゛ネ一方、前おり□ペット２上面には、前記レバー
１４の回動中心部が係入する円形凹部２６と該内形凹部
２６の二側から外方に連続し且つ前記レバー１４番回動
自在１と□係入１４゜べき扇形の切欠凹部１９とを形式
してミ゛前記し大＝゛１４の回動範囲を前艷廟欠凹ｈ゛
１９め両繻晶１’９ａ、１９ｂによつｔ規制”じ得るよ
口１こじた□ト呂を特徴とする燃料噴射ポンプ。 “□１１： −、、、、、、、、ｙ□ ’ｊ；−′ｌ
、１[Claims for Utility Model Registration] A fuel injection pump of a type in which a tappet 2 and a camshaft 3 are separated from a system pump body 1, the pump body 1 being reciprocally slidable inside the pump body 1. At the lower end of the plunger 4, there is attached a lever 2 14 for adjusting the injection amount, which operates the plunger 4 in the opposite direction. The recess 26 and the sector-shaped notch recess 19 which continues outward from the two sides of the internal recess 26 and which is rotatable 1 and which engages the lever 14 at an angle of 14 degrees are formed as follows: This fuel injection pump is characterized by a □toro that allows the rotation range of 14 to be adjusted to the ``T regulation'' due to the front bulge missing concave h゛19 and both sintered crystals 1'9a and 19b. “□11: −、、、、、、、y□ 'j；−′l
,1
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18321879U JPS6012934Y2 (en) | 1979-12-28 | 1979-12-28 | fuel injection pump |
| US06/167,463 US4403586A (en) | 1979-12-11 | 1980-07-11 | Fuel injection pump of internal combustion engine |
| GB8023370A GB2065238B (en) | 1979-12-11 | 1980-07-17 | Fuel injection pumps |
| IT8068160A IT1128950B (en) | 1979-12-11 | 1980-07-18 | INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| DE19803027627 DE3027627A1 (en) | 1979-12-11 | 1980-07-21 | FUEL INJECTION PUMP FOR AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18321879U JPS6012934Y2 (en) | 1979-12-28 | 1979-12-28 | fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56101462U JPS56101462U (en) | 1981-08-10 |
| JPS6012934Y2 true JPS6012934Y2 (en) | 1985-04-25 |
Family
ID=29693524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18321879U Expired JPS6012934Y2 (en) | 1979-12-11 | 1979-12-28 | fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6012934Y2 (en) |
-
1979
- 1979-12-28 JP JP18321879U patent/JPS6012934Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56101462U (en) | 1981-08-10 |
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