JP3347417B2 - Method of manufacturing bucket for hydraulic lash adjuster - Google Patents
Method of manufacturing bucket for hydraulic lash adjusterInfo
- Publication number
- JP3347417B2 JP3347417B2 JP22181293A JP22181293A JP3347417B2 JP 3347417 B2 JP3347417 B2 JP 3347417B2 JP 22181293 A JP22181293 A JP 22181293A JP 22181293 A JP22181293 A JP 22181293A JP 3347417 B2 JP3347417 B2 JP 3347417B2
- Authority
- JP
- Japan
- Prior art keywords
- skirt
- bucket
- thick
- shaped
- cup
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/143—Tappets; Push rods for use with overhead camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、カムとバルブステムと
の間に介装されて、一定の弁間隙を保証するために用い
られる油圧式ラッシュアジャスタの一構成部品であるカ
ップ型のバケットの製造方法に係り、特に、スカート部
の内周に、バケット内にプランジャ等が収容一体化され
た油圧ユニットを支承する、孔あき円盤状スリーブを嵌
合固定するための厚肉段差部が形成されたカップ型のバ
ケットの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup type bucket which is a component of a hydraulic lash adjuster which is interposed between a cam and a valve stem and is used to guarantee a constant valve clearance . According to the manufacturing method , in particular, a thick step portion for fitting and fixing a perforated disc-shaped sleeve that supports a hydraulic unit in which a plunger or the like is housed and integrated in a bucket is formed on the inner periphery of the skirt portion. And a method of manufacturing a cup-shaped bucket.
【０００２】[0002]
【従来の技術】油圧式ラッシュアジャスタは、図３に示
されるように、動弁カムａとバルブステムｂとの間に介
装されるもので、下方の開口するカップ型のバケット１
の内側に、円筒状のカップ型ボディ２内にプランジャ３
等が収容一体化された油圧ユニット３０が、バケット１
の内周に嵌合固定された円盤形状のスリーブ４によって
支承された構造となっている。なお符号５はプランジャ
３に設けられている小孔３ａを開閉するチェックボール
で、ボールケージ６との間に介装されたスプリング７に
よって小孔３ａを閉塞する方向に付勢されており、小孔
３ａの下方には高圧室Ａが、小孔３ａの上方にはリザー
バＢがそれぞれ画成されている。符号９ａはバケット１
の天井部１ｂの裏面に形成されている溝で、リザーバＢ
はこの溝９ａを介してプランジャ２の外側のサブリザー
バＣに連絡している。符号８はボディ２をバルブステム
側に付勢するプランジャスプリング、符号９ｂは油供給
孔である。2. Description of the Related Art As shown in FIG. 3, a hydraulic lash adjuster is interposed between a valve operating cam a and a valve stem b.
Inside the cylindrical cup-shaped body 2 and the plunger 3
The hydraulic unit 30 that houses and integrates the
And is supported by a disk-shaped sleeve 4 fitted and fixed to the inner circumference of the disk. Reference numeral 5 denotes a check ball for opening and closing the small hole 3a provided in the plunger 3, which is urged in a direction to close the small hole 3a by a spring 7 interposed between the ball cage 6 and the small ball. A high-pressure chamber A is defined below the hole 3a, and a reservoir B is defined above the small hole 3a. Symbol 9a is bucket 1
Groove formed on the back surface of the ceiling portion 1b of the reservoir B
Communicates with the sub-reservoir C outside the plunger 2 through the groove 9a. Reference numeral 8 denotes a plunger spring for urging the body 2 toward the valve stem, and reference numeral 9b denotes an oil supply hole.
【０００３】そしてこのカップ型のバケット１は、円筒
状のスカート部１ａと、スカート部１ａの上端部を閉塞
する円盤状の天井部１ｂとが一体に形成されたもので、
軽量化という観点からスタンピング成形体により構成さ
れており、スカート部１ａの上下方向中程にはスリーブ
４を嵌合固定するための段差部１ｃが形成されている。The cup-shaped bucket 1 is formed by integrally forming a cylindrical skirt portion 1a and a disk-shaped ceiling portion 1b for closing an upper end of the skirt portion 1a.
It is formed of a stamping molded body from the viewpoint of weight reduction, and a step portion 1c for fitting and fixing the sleeve 4 is formed in the middle of the skirt portion 1a in the vertical direction.
【０００４】そしてこのバケット１を製造するには、ま
ずスタンピングにより図４（ａ）に示すようなカップ型
成形体を成形し、その後図４（ｂ）斜線で示すように、
スカート部１ａの外周一個所，内周二個所の計三個所を
旋盤等によって切削することで、図４（ｃ）に示す所定
形状に形成していた。In order to manufacture the bucket 1, first, a cup-shaped molded body as shown in FIG. 4A is formed by stamping, and thereafter, as shown in FIG.
A predetermined shape shown in FIG. 4C was formed by cutting a total of three locations, one on the outer periphery and two on the inner periphery, of the skirt portion 1a using a lathe or the like.
【０００５】[0005]
【発明の解決しようとする課題】しかし従来のバケット
１では、スカート部１ａの上下方向中程にスリーブ嵌合
用の段差部１ｃが設けられ、スリーブ４を担持するに十
分な強度を確保するためには、この段差部１ｃの周辺を
肉厚とすることが必要で、このため図４（ａ）に示すよ
うに、バケットのスカート部１ａの奥まった領域を厚く
成形した後、図４（ｂ）に示すようにスカート部１ａの
入口から奥まった部位を中ぐり加工しなければならず、
この中ぐり加工が非常に面倒な作業となっていた。However, in the conventional bucket 1, a stepped portion 1c for fitting a sleeve is provided in the middle of the skirt portion 1a in the vertical direction, so as to secure sufficient strength to support the sleeve 4. It is necessary to make the periphery of the step portion 1c thicker. Therefore, as shown in FIG. 4 (a), after deeply forming the recessed region of the skirt portion 1a of the bucket, FIG. As shown in the figure, the part recessed from the entrance of the skirt part 1a must be bored,
This boring was a very cumbersome operation.
【０００６】本発明は前記従来技術の問題点に鑑みなさ
れたもので、その目的は中ぐり加工が不要で製造の容易
な油圧式ラッシュアジャスタ用のバケットの製造方法を
提供することにある。An object of the present invention is to provide a method of manufacturing a bucket for a hydraulic lash adjuster which does not require boring and is easy to manufacture .
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
に、本発明に係る油圧式ラッシュアジャスタ用のバケッ
トの製造方法においては、円筒状のスカート部の上端に
円盤状の天井部が一体に形成されたカップ型バケット内
周の上下方向途中に、高圧室とリザーバとを画成するプ
ランジャを内蔵した上方に開口するカップ型ボディの外
周を支承する孔あき円盤状スリーブの外周縁がスカート
部の開口側より嵌合する、厚肉の段差部が周設された油
圧式ラッシュアジャスタ用のバケットの製造方法におい
て、成形により金属製板材をカップ型に形成し、このカ
ップ型成形体のスカート部を軸方向にしごいて、スカー
ト部の上下方向途中に内周が半径方向内側に膨出する厚
肉内方突条部を形成するとともに、この厚肉内方突条部
のスカート部開口側にスリーブ嵌合用の段差部を形成す
るバケットの製造方法であって、 前記スカート部のしご
き成形を、スカート部の天井部側の外周をスカート部開
口側にしごいて開口部側に厚肉部を成形する第１の工程
と、スカート部の開口部側の内側を天井部側にしごいて
スカート部の中程に肉寄せされた内方厚肉部を成形する
第２の工程と、スカート部の外方拡大部を開口側にしご
いてスカート部を直線状に成形する第３の工程とを備え
るように構成したものである。 In order to achieve the above object, in a method of manufacturing a bucket for a hydraulic lash adjuster according to the present invention, a disk-shaped ceiling is integrally formed on an upper end of a cylindrical skirt. An outer peripheral edge of a perforated disc-shaped sleeve that supports the outer periphery of a cup-shaped body that opens upward and has a built-in plunger that defines a high-pressure chamber and a reservoir is formed in the middle of the formed cup-shaped bucket in the vertical direction. Manufacturing method of a hydraulic lash adjuster bucket having a thick stepped portion fitted around from the opening side of
Te, a metal plate material is formed into a cup-type by deposition type, squeezes the skirt portion of the cup-shaped product in the axial direction, the inner circumference in the thick bulging radially inwardly in the middle vertical skirt A method of manufacturing a bucket, wherein a step portion for forming a sleeve is formed on the side of the skirt portion opening side of the thick inner projecting portion while forming a ridge portion of the skirt portion.
Molding, open the skirt on the outer periphery of the skirt on the ceiling side.
First step of forming a thick part on the opening side by pressing on the mouth side
And squeeze the inside of the skirt opening toward the ceiling
Forming the inner thick part that is pushed in the middle of the skirt
In the second step, the outer enlarged portion of the skirt portion is
And a third step of linearly forming the skirt portion.
It is configured as follows.
【０００８】[0008]
【作用】成形だけによりスカート部の上下方向途中に厚
肉内方突条部が周設されたカップ型のバケットを形成で
き、スカート部のこの厚肉部のバケット開口側にスリー
ブ嵌合用の段差部を形成できる。A cup-shaped bucket in which a thick inner ridge is provided in the middle of the skirt in the vertical direction can be formed only by molding, and a step for fitting a sleeve is provided on the side of the skirt where the bucket is open. A part can be formed.
【０００９】[0009]
【実施例】次に、本発明の実施例を図面に基づいて説明
する。図１及び図２は本発明方法の一実施例を示すもの
で、図１は本発明方法によって製造したバケットを適用
した油圧式ラッシュアジャスタの縦断面図、図２は同バ
ケットを製造する工程及び同バケットにスリーブを嵌合
する工程を示す工程説明図である。Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment of the method of the present invention. FIG. 1 is a longitudinal sectional view of a hydraulic lash adjuster to which a bucket manufactured by the method of the present invention is applied, and FIG. It is a process explanatory view showing a process of fitting a sleeve to the bucket.
【００１０】図１において、油圧式ラッシュアジャスタ
は、カップ型のバケット１０内に油圧ユニット３０が収
容配置された構造で、この油圧ユニット３０及び油圧ユ
ニット３０を支承する孔あき円盤状スリーブ４の構造
は、図３に示す従来の油圧ユニット３０及びスリーブ４
と同一であるため、同一の符号を付すことによりその説
明は省略する。In FIG. 1, the hydraulic lash adjuster has a structure in which a hydraulic unit 30 is housed and arranged in a cup-shaped bucket 10. The hydraulic unit 30 and a perforated disk-shaped sleeve 4 for supporting the hydraulic unit 30 are structured. Is a conventional hydraulic unit 30 and sleeve 4 shown in FIG.
Therefore, the description is omitted by assigning the same reference numerals.
【００１１】バケット１０は、円筒状の薄肉のスカート
部１２と、このスカート部１２の端部に形成された円盤
状の厚肉の天井部１８とからなり、スカート部１２の上
下方向略中央部にはスリーブ嵌合用の厚肉の段差部１４
が形成されている。油圧ユニット３０を支承するスリー
ブ４の外周縁は、スカート部１２の厚肉段差部１４にス
カート部開口側より嵌合されるとともに、加締め部材１
６を加締めることで固定されている。The bucket 10 includes a cylindrical thin skirt portion 12 and a disk-shaped thick ceiling portion 18 formed at an end of the skirt portion 12. Has a thick step portion 14 for fitting a sleeve.
Is formed. The outer peripheral edge of the sleeve 4 that supports the hydraulic unit 30 is fitted into the thick step portion 14 of the skirt portion 12 from the skirt opening side, and the crimping member 1
6 is fixed by caulking.
【００１２】また重量を軽減するためには、バケット１
０の厚さを薄くすることが望ましいことから、スカート
部１２が薄肉とされているが、天井部１８には動弁カム
（図３参照）の衝打力が作用するため所定の厚さが必要
で、スカート部１２より厚く形成されている。また段差
部１４は、スリーブ４の加締め固定の際の荷重を支える
に十分な強度を確保できる所定の厚さに形成されてい
る。即ち段差部１４の形成領域だけがスカート部１２の
他の領域に比べて厚く形成されている。In order to reduce the weight, the bucket 1
The thickness of the skirt portion 12 is made thin because it is desirable to reduce the thickness of the skirt portion 0, but the impact force of the valve cam (see FIG. 3) acts on the ceiling portion 18 so that the skirt portion 12 has a predetermined thickness. It is necessary and is formed thicker than the skirt portion 12. In addition, the step portion 14 is formed to have a predetermined thickness that can secure sufficient strength to support a load when the sleeve 4 is crimped and fixed. That is, only the formation region of the step portion 14 is formed thicker than other regions of the skirt portion 12.
【００１３】次に、このバケット１０の成形工程を図２
を参照して説明する。まず図２（ａ），（ｂ）に示すよ
うに、円盤形状の厚肉の金属材料をスタンピングにより
スカート部１２と天井部１８とをもつ上方に開口するカ
ップ型成形体Ｗを成形する。次に図２（ｃ）に示すよう
に、スカート部１２の天井部側の外周を軸方向（矢印Ａ
方向）にしごいてスカート部１２の開口側に厚肉部１２
ａを成形する。次に図２（ｄ）に示すように、スカート
部１２の開口側内側を軸方向（矢印Ｂ方向）にしごい
て、スカート部１２の中程に肉寄せされた内方肉厚部１
２ｂを成形する。次に図２（ｄ）矢印Ｃに示すように、
スカート部１２の外方拡大部を軸方向にしごいて直線状
のスカート部１２の内側に内方突条部１３を成形する。
次に内方突条部１３のスカート部開口側のコーナ部及び
スカート部の外周をそれぞれ旋盤によって切削し、スリ
ーブ４の外周縁が嵌合できる所定の段差部１４及び凹条
部１５を形成する（図２（ｆ）参照）とともに、スカー
ト部１２に油供給孔９ｂを穿設する。次に図２（ｇ）に
示すように、スカート部開口側からスリーブ４の外周縁
を段差部１４に嵌合し、さらに加締め部材１６を挿入
し、この加締め部材１６を治具２０を使って押し潰すこ
とで、スリーブ４の外周縁を段差部１４に加締め固定す
る。Next, the forming process of the bucket 10 is shown in FIG.
This will be described with reference to FIG. First, as shown in FIGS. 2 (a) and 2 (b), a cup-shaped molded body W having a skirt portion 12 and a ceiling portion 18 and having an upward opening is formed by stamping a disc-shaped thick metal material. Next, as shown in FIG. 2C, the outer periphery of the skirt portion 12 on the ceiling side is set in the axial direction (arrow A).
Direction) and the thick portion 12
a is molded. Next, as shown in FIG. 2 (d), the inside of the skirt portion 12 on the opening side is squeezed in the axial direction (the direction of the arrow B), and the inner thick portion 1 which is pushed in the middle of the skirt portion 12 is drawn.
2b is molded. Next, as shown by an arrow C in FIG.
The outer enlarged portion of the skirt portion 12 is pressed in the axial direction to form an inner ridge 13 inside the linear skirt portion 12.
Next, the outer periphery of the skirt portion opening side of the inner protruding ridge portion 13 and the outer periphery of the skirt portion are cut by a lathe, respectively, to form predetermined step portions 14 and concave ridge portions 15 into which the outer peripheral edge of the sleeve 4 can be fitted. At the same time (see FIG. 2F), an oil supply hole 9b is formed in the skirt portion 12. Next, as shown in FIG. 2 (g), the outer peripheral edge of the sleeve 4 is fitted into the step portion 14 from the skirt opening side, and the caulking member 16 is further inserted. The outer peripheral edge of the sleeve 4 is crimped and fixed to the step portion 14 by being crushed.
【００１４】[0014]
【発明の効果】以上の説明から明らかなように、本発明
に係る油圧式ラッシュアジャスタ用のバケットの製造方
法によれば、成形により、スカート部の上下方向途中に
厚肉内方突条部が周設されたカップ型のバケットを形成
できることから、スカート部のこの厚肉部のバケット開
口側にスリーブ嵌合用の段差部を形成でき、従来行って
いた面倒な中ぐり加工が不要となって、バケットの製造
が非常に簡単となる。As is apparent from the above description, a method of manufacturing a bucket for a hydraulic lash adjuster according to the present invention.
According to the method , since a cup-shaped bucket in which a thick inner ridge portion is provided around the skirt portion in the vertical direction can be formed by molding, the sleeve is fitted to the bucket opening side of this thick portion of the skirt portion. A step portion for joint use can be formed, and troublesome boring conventionally performed is not required, so that the manufacture of the bucket is greatly simplified.
【図１】本発明方法によって製造したバケットを適用し
た油圧式ラッシュアジャスタの縦断面図FIG. 1 is a longitudinal sectional view of a hydraulic lash adjuster to which a bucket manufactured by the method of the present invention is applied.
【図２】同バケットの製造工程及びスリーブ嵌合工程を
説明する工程説明図FIG. 2 is a process explanatory view illustrating a manufacturing process and a sleeve fitting process of the bucket.
【図３】従来の油圧式ラッシュアジャスタの縦断面図FIG. 3 is a longitudinal sectional view of a conventional hydraulic lash adjuster.
【図４】油圧式ラッシュアジャスタ構成部品である従来
のバケットの製造工程説明図FIG. 4 is an explanatory view of a manufacturing process of a conventional bucket which is a component of a hydraulic lash adjuster.
Claims (1)
井部が一体に形成されたカップ型バケット内周の上下方
向途中に、高圧室とリザーバとを画成するプランジャを
内蔵した上方に開口するカップ型ボディの外周を支承す
る孔あき円盤状スリーブの外周縁がスカート部の開口側
より嵌合する、厚肉の段差部が周設された油圧式ラッシ
ュアジャスタ用のバケットの製造方法において、成形に
より金属製板材をカップ型に形成し、このカップ型成形
体のスカート部を軸方向にしごいて、スカート部の上下
方向途中に内周が半径方向内側に膨出する厚肉内方突条
部を形成するとともに、この厚肉内方突条部のスカート
部開口側にスリーブ嵌合用の段差部を形成するバケット
の製造方法であって、 前記スカート部のしごき成形は、スカート部の天井部側
の外周をスカート部開口側にしごいて開口部側に厚肉部
を成形する第１の工程と、スカート部の開口部側の内側
を天井部側にしごいてスカート部の中程に肉寄せされた
内方厚肉部を成形する第２の工程と、スカート部の外方
拡大部を開口側にしごいてスカート部を直線状に成形す
る第３の工程とを備えた ことを特徴とする油圧式ラッシ
ュアジャスタ用のバケットの製造方法。1. A plunger for defining a high-pressure chamber and a reservoir is provided in an upper part of an inner periphery of a cup-shaped bucket in which a disc-shaped ceiling is integrally formed at an upper end of a cylindrical skirt. In a method of manufacturing a bucket for a hydraulic lash adjuster having a thick stepped portion, the outer peripheral edge of a perforated disk-shaped sleeve for supporting the outer periphery of an opening cup-shaped body is fitted from the opening side of a skirt portion. Te, a metal plate material is formed into a cup-type by deposition type, squeezes the skirt portion of the cup-shaped product in the axial direction, the inner circumference in the thick bulging radially inwardly in the middle vertical skirt A bucket that forms a ridge portion and a step portion for fitting a sleeve on the skirt opening side of the thick inner ridge portion.
The ironing of the skirt portion is performed on the ceiling side of the skirt portion.
The outer periphery of the skirt to the opening side and the thick part to the opening side
A first step of molding the inner side of the skirt portion on the opening side
Was pushed to the ceiling side and the meat was pulled in the middle of the skirt part
The second step of forming the inner thick part and the outer part of the skirt part
Squeeze the skirt part straight with the enlarged part facing the opening side
And a third step for manufacturing a bucket for a hydraulic lash adjuster.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22181293A JP3347417B2 (en) | 1993-09-07 | 1993-09-07 | Method of manufacturing bucket for hydraulic lash adjuster |
| KR1019940022011A KR100306463B1 (en) | 1993-09-07 | 1994-09-01 | Bucket for Hydraulic Lash Regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22181293A JP3347417B2 (en) | 1993-09-07 | 1993-09-07 | Method of manufacturing bucket for hydraulic lash adjuster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0777017A JPH0777017A (en) | 1995-03-20 |
| JP3347417B2 true JP3347417B2 (en) | 2002-11-20 |
Family
ID=16772584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22181293A Expired - Fee Related JP3347417B2 (en) | 1993-09-07 | 1993-09-07 | Method of manufacturing bucket for hydraulic lash adjuster |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3347417B2 (en) |
| KR (1) | KR100306463B1 (en) |
-
1993
- 1993-09-07 JP JP22181293A patent/JP3347417B2/en not_active Expired - Fee Related
-
1994
- 1994-09-01 KR KR1019940022011A patent/KR100306463B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR950008913A (en) | 1995-04-19 |
| JPH0777017A (en) | 1995-03-20 |
| KR100306463B1 (en) | 2002-02-19 |
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