JPS63263266A - Manufacture of fuel pressure regulating valve - Google Patents
Manufacture of fuel pressure regulating valveInfo
- Publication number
- JPS63263266A JPS63263266A JP62096021A JP9602187A JPS63263266A JP S63263266 A JPS63263266 A JP S63263266A JP 62096021 A JP62096021 A JP 62096021A JP 9602187 A JP9602187 A JP 9602187A JP S63263266 A JPS63263266 A JP S63263266A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- fuel
- upper cover
- spring
- regulating valve
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims description 9
- 230000037303 wrinkles Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は燃料噴射装置のインジェクターに加わる燃圧
をエンジンの吸気管内の吸気圧に対して常に一定値に保
持する燃料圧力調整弁の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a method for manufacturing a fuel pressure regulating valve that always maintains the fuel pressure applied to an injector of a fuel injection device at a constant value with respect to the intake pressure in an intake pipe of an engine. It is something.
（従来技術）
本願の先行技術資料として特開昭５４−１３７７３０号
公報、実開昭５３−６８８２９号公報及び実公昭６０−
１４３１６０号公報がある。これらの先行技術資料のう
ち
特開昭５４−１３７７３０号公報の燃料圧力調整弁では
ダイアフラム１１の取り付けに当ってダイアフラム１１
の心ずれ、皺の発生及び脱落により設定圧力に狂いが発
生し、又ダイアフラム１１にクラックが発生して燃料洩
れを起すことがある。(Prior art) Prior art materials related to the present application include JP-A No. 54-137730, JP-A-53-68829, and JP-A-Sho 60-
There is a publication No. 143160. Among these prior art documents, in the fuel pressure regulating valve disclosed in JP-A-54-137730, when the diaphragm 11 is attached, the diaphragm 11
Misalignment, generation of wrinkles, and falling off of the diaphragm 11 may cause deviations in the set pressure, and cracks may occur in the diaphragm 11, causing fuel leakage.
実開昭５３−６８８２９号公報の燃料圧力調整弁ではダ
イアフラム６のかしめを２回行なっており、又部品点数
が多いためコストが高い。かしめを２回行なうのは燃料
圧力調整弁の組み付けに際しダイアフラム６がスプリン
グ１７の弾力を受けているとダイアフラム６に心ずれ、
皺、脱落が発生するのでこれを防止するために先ずスプ
リング１７を組み付けない状態でダイアフラムのみをか
しめ、次にスプリング１７を組み付けてロアボデ−４を
アッパカバー１にかしめるからである。In the fuel pressure regulating valve disclosed in Japanese Utility Model Application Publication No. 53-68829, the diaphragm 6 is caulked twice, and the cost is high due to the large number of parts. The reason why caulking is performed twice is because when assembling the fuel pressure regulating valve, if the diaphragm 6 is receiving the elasticity of the spring 17, it may become misaligned with the diaphragm 6.
This is because in order to prevent wrinkles and falling off, only the diaphragm is caulked without the spring 17 installed, and then the spring 17 is assembled and the lower body 4 is caulked to the upper cover 1.
実公昭６０−１４３１６０号公報の燃料圧力調整弁では
かしめは１回であるがねじ嵌合工程を含むので実質上作
業工数が則加しコストアップとなる。Although the fuel pressure regulating valve disclosed in Japanese Utility Model Publication No. 60-143160 requires only one caulking process, it includes a screw fitting process, which substantially adds to the number of man-hours and increases costs.
第４図（イ）〜（ホ）は第３図に示す従来の燃料圧力調
整弁の組付工程を示す。工程（イ）ではロアボデー、４
１にダイアフラム４２を載置し、その上にダイアフラム
シェル４３をを行く。工程（ロ）ではロアボデー４１に
ダイアフラム４２及びダイアフラムシェル４３をかしめ
る。工程（ハ）ではアッパシェル４４上にスプリング４
５を載置しスプリング４５にアッパカバー４６を被せる
。4(a) to 4(e) show the assembly process of the conventional fuel pressure regulating valve shown in FIG. 3. In process (a), lower body, 4
A diaphragm 42 is placed on the diaphragm 1, and a diaphragm shell 43 is placed on top of the diaphragm 42. In step (b), the diaphragm 42 and the diaphragm shell 43 are caulked to the lower body 41. In step (c), the spring 4 is placed on the upper shell 44.
5 and cover the spring 45 with the upper cover 46.
工程（ニ）ではアッパカバー４６によりスプリング４５
を圧縮しつつアッパカバー４６をロアボデー４１に２回
目のかしめをする。工程（ホ）では工具４９．５０によ
りアッパカバー４６の中央部を押して中央部を小変形さ
せ、スプリング４５の弾力を調整する。４７．４８はそ
れぞれ燃料室、負圧室を示す。In step (d), the spring 45 is
While compressing the upper cover 46, the upper cover 46 is caulked to the lower body 41 for the second time. In step (E), the center part of the upper cover 46 is pushed by tools 49 and 50 to slightly deform the center part, and the elasticity of the spring 45 is adjusted. 47 and 48 indicate a fuel chamber and a negative pressure chamber, respectively.
（発明が解決しようとする問題点）
この発明は組み付けに際しかしめが１回で済み、部品点
数が少ない燃料圧力調整弁の製造方法の提供を課題とす
る。(Problems to be Solved by the Invention) An object of the present invention is to provide a method for manufacturing a fuel pressure regulating valve that requires only one fitting during assembly and has a small number of parts.
（問題点を解決するための手段）
上記の課題を解決するため、この発明はダイアフラムの
一方側に同ダイアフラムとにより燃料室を形成する０ア
ポデーが設けられ、ダイアフラムの他方に同ダイアフラ
ムとにより負圧室を形成するアッパカバーが設けられて
いる燃料圧力調整弁において、自然状態のスプリングを
負圧室の頂壁との間に隙間を設けてダイアフラム上に載
置してダイアノラムの周縁をかしめによりロアボデー及
びアッパカバーに固定し、次いでアッパカバーの頂壁を
ダイアフラムに向けてスプリングが弾力を発揮する状態
まで押して変形させている。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a zero apode that forms a fuel chamber with the diaphragm on one side of the diaphragm, and a zero apode that forms a fuel chamber with the diaphragm on the other side of the diaphragm. In a fuel pressure regulating valve equipped with an upper cover that forms a pressure chamber, the spring in its natural state is placed on the diaphragm with a gap between it and the top wall of the negative pressure chamber, and the periphery of the dianoram is caulked. It is fixed to the lower body and upper cover, and then the top wall of the upper cover is pushed toward the diaphragm until the spring exerts elasticity to deform it.
（作用）
自然状態のスプリングを負圧室の頂壁との間に隙間を設
けてダイアフラム上に載置してダイアフラムの周縁をロ
アボデー及びアッパカバーにがしめにより固定するので
ダイアフラムに芯ずれ、皺、脱落が発生しない。かしめ
後アッパカバーの！ｈ壁をダイアフラムに向けてスプリ
ングが弾力を発揮する状態まで押して変形させると製造
作業が完了するので、従来のように第２回のかしめ及び
そのための部品が不要となり部品点数が従来より減る。(Function) The spring in its natural state is placed on the diaphragm with a gap between it and the top wall of the negative pressure chamber, and the periphery of the diaphragm is fixed to the lower body and upper cover by tightening, thereby preventing misalignment or wrinkles on the diaphragm. , no shedding occurs. Upper cover after caulking! The manufacturing work is completed when the h-wall is pushed toward the diaphragm and deformed until the spring exerts its elasticity, so the second crimping and the parts for it are not required as in the past, and the number of parts is reduced compared to the past.
（実施例の説明）
以下実施例を示す図面によりこの発明を説明する。第１
．２図において燃料圧力調整弁■のロアボデー１には図
示しないフューエルポンプにより加圧された燃料が流入
する燃料人口２と図示しない燃料タンクに連通する燃料
出口３とが設けられている。アッパカバー４には図示し
ない内燃機関の吸気通路に連通する負圧導入パイプ５が
設けられている。ロアボデー１及びアッパカバー４はダ
イアフラム６の２枚番互いに挟み込み、アッパカバー４
のかしめ部４ａを内向きに折曲してかしめている。ダイ
アフラム６は燃１１１７と負圧室８とを区画している。(Description of Embodiments) The present invention will be described below with reference to drawings showing embodiments. 1st
．． In FIG. 2, the lower body 1 of the fuel pressure regulating valve (2) is provided with a fuel port 2 into which fuel pressurized by a fuel pump (not shown) flows, and a fuel outlet 3 communicating with a fuel tank (not shown). The upper cover 4 is provided with a negative pressure introduction pipe 5 communicating with an intake passage of an internal combustion engine (not shown). The lower body 1 and the upper cover 4 are sandwiched between the two pieces of the diaphragm 6, and the upper cover 4
The caulking portion 4a is bent inward and caulked. The diaphragm 6 partitions the combustion chamber 1117 and the negative pressure chamber 8.
ダイアフラム６の中央部ではダイアフラム６を挟んでロ
アシェル９と７ツパシエル１０とがかしめにより結合さ
れ、アッパシェル１０とアッパカバー４の頂壁４ｂとの
間には頂壁４ｂとの間に隙間１１を残してスプリング１
２が自然状態でアッパシェル１０上に載置される。この
状態において１ｊｉｆ４ｂをダイアフラム６の方向に押
圧して変形させスプリング１２に負荷を与えてロアシェ
ル９を燃料室７の方向に付勢する。ロアシェル９の燃料
室７に対面する側の中央部には円錐状の凹み１３が設け
られ、この凹み１３にボール１４ｂが収容されリテーナ
１５を介してロアシェル９に組み付けられている。ボー
ル１４ｂは円板１４ａに溶着され、円板１４ａとともに
パルプ１４を構成している。燃料出口３にはバルブ１４
に対向してバルブシート１６が圧入されている。At the center of the diaphragm 6, the lower shell 9 and the seven-piece shell 10 are joined together by caulking with the diaphragm 6 in between, leaving a gap 11 between the upper shell 10 and the top wall 4b of the upper cover 4. Spring 1
2 is placed on the upper shell 10 in a natural state. In this state, the 1jif 4b is pressed in the direction of the diaphragm 6 to be deformed, and a load is applied to the spring 12, thereby urging the lower shell 9 in the direction of the fuel chamber 7. A conical recess 13 is provided in the center of the lower shell 9 on the side facing the fuel chamber 7, and a ball 14b is accommodated in the recess 13 and assembled to the lower shell 9 via a retainer 15. The ball 14b is welded to the disk 14a, and forms the pulp 14 together with the disk 14a. A valve 14 is installed at the fuel outlet 3.
A valve seat 16 is press-fitted opposite to.
上記の燃料圧力調整弁Ｖの作用を説明すると図示しない
燃料ポンプより一定の燃圧で圧送された燃料は燃料人口
２から燃料室７に入る。燃料圧力調整弁■は燃圧ど負圧
室８の吸気管負圧との差をスプリング１２により２．５
５Ｎｆ／ａｉに保持しようとする。従って差圧が前記の
２．５５＊＃／ｃｊ以上になると燃圧が圧縮スプリング
１２の弾力に打ち勝ってダイアフラム６を押し上げるの
でバルブ１４がバルブシート１６から離れる。このため
燃料室７内の燃料の一部はバルブシート１６、燃料出口
３を経て図示しない燃料タンクにリターンされる。To explain the operation of the above fuel pressure regulating valve V, fuel is pumped at a constant fuel pressure from a fuel pump (not shown) and enters the fuel chamber 7 from the fuel volume 2. The fuel pressure regulating valve ■ adjusts the difference between the fuel pressure and the intake pipe negative pressure in the negative pressure chamber 8 by 2.5 with a spring 12.
Try to keep it at 5Nf/ai. Therefore, when the differential pressure exceeds the above-mentioned 2.55*#/cj, the fuel pressure overcomes the elasticity of the compression spring 12 and pushes up the diaphragm 6, causing the valve 14 to separate from the valve seat 16. Therefore, a portion of the fuel in the fuel chamber 7 is returned to a fuel tank (not shown) via the valve seat 16 and the fuel outlet 3.
この結果、差圧は２．５５Ｋｆ／ｄに保持される。又エ
ンジン停止後再始動する時燃圧が高く（約２，３ｇｙ
／ ａｊ ）保持されていると再始動が容易となる。As a result, the differential pressure is maintained at 2.55 Kf/d. Also, when restarting the engine after stopping, the fuel pressure is high (approximately 2.3 gy
/ aj ) If held, restarting becomes easier.
上記の燃料圧力調整弁の組付工程を第２図（イ）〜（ハ
）により説明すると第２図（イ）に示すようにロアボデ
ー１に燃料人口２、燃料出口３を予め組み付けておく。The process of assembling the above fuel pressure regulating valve will be explained with reference to FIGS. 2(A) to 2(C). As shown in FIG. 2(A), a fuel port 2 and a fuel outlet 3 are assembled to the lower body 1 in advance.
又アッパカバー４内には０アジニル９、アッパシェル１
０を組み付けたダイアフラム６及び自然状態のスプリン
グ１２（その長さはアッパーシェル１０とアッパカバー
４の頂壁４ｂ間の距離より小さい）をアッパシェル１°
０とアッパカバー４の頂壁４ｂ間に挿入しておく。さら
にロアシェル９にはパルプ１４をリテーナ１５を介して
取り付けておく。この状態のロアボデー１を上側にして
治具Ｃに取り付けて燃料入口２により治具Ｃからの落下
を防止する。次にアッパカバー４を下方よりロアボデー
１に整合の状態であてがい治具Ｂによりアッパカバー４
のかしめ郡４ａをロアボデー１にかしめて第２図（ロ）
の状態にする。次に治具Ｂ、Ｃを上、不透にし治具Ａに
よりアッパカバー４の頂壁４ｂを下方に押して変形させ
スプリング１２を介してダイアフラム６に負荷を与える
。Also, in the upper cover 4, 0 azinyl 9, upper shell 1
The diaphragm 6 assembled with 0 and the spring 12 in its natural state (its length is smaller than the distance between the upper shell 10 and the top wall 4b of the upper cover 4) are attached to the upper shell 1°.
0 and the top wall 4b of the upper cover 4. Further, a pulp 14 is attached to the lower shell 9 via a retainer 15. The lower body 1 in this state is attached to a jig C with the upper side facing up, and the fuel inlet 2 prevents it from falling from the jig C. Next, align the upper cover 4 with the lower body 1 from below using the matching jig B.
Caulking group 4a to lower body 1 Figure 2 (b)
state. Next, the top wall 4b of the upper cover 4 is pushed downward and deformed by the jig A, and a load is applied to the diaphragm 6 via the spring 12, with the jigs B and C turned opaque.
上述のようにこの製造工程においてはかしめ作業は１回
のみである。又従来の燃料圧力調整弁のようにダイアフ
ラムシェルやガスケットは不要である。As mentioned above, the caulking operation is performed only once in this manufacturing process. Also, unlike conventional fuel pressure regulating valves, a diaphragm shell or gasket is not required.
（発明の効果）
この発明は上記の工程からなっているので次のような優
れた効果を有する。(Effects of the Invention) Since the present invention comprises the above steps, it has the following excellent effects.
（イ）スプリングを自然状態で組み付けてかしめ作業を
行なうためダイアフラムにはスプリングの力が作用しな
い。このためダイアフラムに心ずれ、皺、脱落が発生し
ない。従ってダイアフラムにクラックが発生しなくなり
、クラックによる燃料洩れや燃料圧力調整弁における設
定圧力の狂いがなくなる。(a) Since the spring is assembled in its natural state and caulking is performed, no spring force acts on the diaphragm. This prevents the diaphragm from becoming misaligned, wrinkled, or falling off. Therefore, cracks will not occur in the diaphragm, and fuel leakage and deviations in the set pressure in the fuel pressure regulating valve due to cracks will be eliminated.
（ロ）従来は燃料圧力調整弁を組み付ける際スプリング
力がある状態で組み付けているのでダイアフラムに心ず
れ、皺、脱落が発生するため先ずスプリングを組み付け
なす、状態でダイアプラム及びダイアフラムシェルをロ
アボデーに第１回目のかしめにより組み付け、次にスプ
リングを組み付けこの状態でガスケット及びロアボデー
をアッパボデーに第２回のかしめにゆより組み付けてい
るが、この発明ではスプリングを自然状態で組み付ける
ので従来に比してかしめ回数が２回から１回になってか
しめ時間が短くなり、又部品点数が２点少なくなるので
コストダウンになる。(b) Conventionally, when assembling a fuel pressure regulating valve, it is assembled with spring force, which can cause the diaphragm to become misaligned, wrinkled, or fall off. The assembly is performed by first caulking, then the spring is assembled, and in this state the gasket and lower body are assembled to the upper body by second caulking. However, in this invention, the spring is assembled in its natural state, so it requires less caulking than the conventional method. The number of caulking times is reduced from two to one, which shortens the caulking time, and the number of parts is reduced by two, resulting in cost reduction.
第１図はこの発明の一実施例を示す。第２図（イ）〜（
ハ）は一実施例の工程を示す。第３図は従来の燃料圧力
調整弁の縦断正面図を示す。第４図（イ）〜（ホ）は従
来の燃Ｆｌ調整弁の製造工程を示す。
１・・・ロアボデー
４・・・アッパカバー
４ｂ・・・１口壁
６・・・ダイアフラム
７・・・燃料室
８・・・負圧室
１１・・・隙間
１２・・・圧縮スプリング（スープリング）１３・・・
凹みFIG. 1 shows an embodiment of the invention. Figure 2 (a) - (
c) shows the process of one embodiment. FIG. 3 shows a longitudinal sectional front view of a conventional fuel pressure regulating valve. FIGS. 4(A) to 4(E) show the manufacturing process of a conventional fuel Fl regulating valve. 1...Lower body 4...Upper cover 4b...1 mouth wall 6...Diaphragm 7...Fuel chamber 8...Negative pressure chamber 11...Gap 12...Compression spring )13...
dent
Claims (1)
を形成するロアボデーが設けられ、ダイアフラムの他方
側に同ダイアフラムとにより負圧室を形成するアツパカ
バーが設けられている燃料圧力調整弁において、自然状
態のスプリングを負圧室の頂壁との間に隙間を設けてダ
イアフラム上に載置してダイアフラムの周縁をかしめに
よりロアボデー及びアッパカバーに固定し、次いでアツ
パカバーの頂壁をダイアフラムに向けてスプリングが弾
力を発揮する状態まで押して凹ませることを特徴とする
燃料圧力調整弁の製造方法。In a fuel pressure regulating valve, a lower body is provided on one side of a diaphragm to form a fuel chamber with the diaphragm, and a top cover is provided on the other side of the diaphragm to form a negative pressure chamber with the diaphragm. is placed on the diaphragm with a gap between it and the top wall of the negative pressure chamber, and the periphery of the diaphragm is fixed to the lower body and upper cover by caulking.Then, the top wall of the top cover is turned toward the diaphragm so that the spring is elastic. A method for manufacturing a fuel pressure regulating valve, which is characterized by pushing and recessing it until it is in a state where it exerts its power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62096021A JP2541545B2 (en) | 1987-04-17 | 1987-04-17 | Manufacturing method of fuel pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62096021A JP2541545B2 (en) | 1987-04-17 | 1987-04-17 | Manufacturing method of fuel pressure regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63263266A true JPS63263266A (en) | 1988-10-31 |
| JP2541545B2 JP2541545B2 (en) | 1996-10-09 |
Family
ID=14153633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62096021A Expired - Lifetime JP2541545B2 (en) | 1987-04-17 | 1987-04-17 | Manufacturing method of fuel pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2541545B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173766U (en) * | 1985-04-18 | 1986-10-29 |
-
1987
- 1987-04-17 JP JP62096021A patent/JP2541545B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173766U (en) * | 1985-04-18 | 1986-10-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2541545B2 (en) | 1996-10-09 |
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