JPH09177512A - Valve lifter for internal combustion engine - Google Patents
Valve lifter for internal combustion engineInfo
- Publication number
- JPH09177512A JPH09177512A JP34046795A JP34046795A JPH09177512A JP H09177512 A JPH09177512 A JP H09177512A JP 34046795 A JP34046795 A JP 34046795A JP 34046795 A JP34046795 A JP 34046795A JP H09177512 A JPH09177512 A JP H09177512A
- Authority
- JP
- Japan
- Prior art keywords
- top plate
- skirt
- valve lifter
- combustion engine
- internal combustion
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims description 34
- 239000000463 material Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、円筒型のスカート
部に天板が加締めにより結合一体化された内燃機関用バ
ルブリフターに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve lifter for an internal combustion engine in which a top plate is joined and integrated with a cylindrical skirt by caulking.
【０００２】[0002]
【従来の技術】図１６は、従来のこの種のバルブリフタ
ーを示しており、板金で形成した円筒型のスカート部１
の側壁を内側に窪ませてフランジ状の段部２を周設し、
この段部２で天板３を支持し、かつスカート部上端開口
縁部１ａを内側に加締めることで、スカート部１に天板
３が一体化された構造となっている。2. Description of the Related Art FIG. 16 shows a conventional valve lifter of this type, which is a cylindrical skirt portion 1 formed of sheet metal.
The side wall of the is recessed inward, and the flange-shaped step portion 2 is provided,
The top plate 3 is supported by the step portion 2 and the top edge opening edge portion 1a of the skirt portion is swaged inward, so that the top plate 3 is integrated with the skirt portion 1.
【０００３】なお符号４は、バルブステム、符号５ａ
は、リテーナ５ｂをバルブステム４に結合するためのコ
ッタで、リテーナ５ｂとシリンダヘッド６の上面（図示
せず）との間に介装されたバルブスプリング７によっ
て、バルブ（バルブステム４）が常に吸排気ポート閉塞
方向である上方に付勢された状態に保持されている。符
号６ａは、シリンダヘッド６に形成されたバルブリフタ
ー収容孔のバルブリフター（スカート部１）摺動面であ
り、符号９はカム軸に固着された偏心カムである。Reference numeral 4 is a valve stem and reference numeral 5a.
Is a cotter for connecting the retainer 5b to the valve stem 4, and the valve spring 7 interposed between the retainer 5b and the upper surface (not shown) of the cylinder head 6 keeps the valve (valve stem 4) constantly. It is held in a state of being urged upward, which is the intake / exhaust port closing direction. Reference numeral 6a denotes a valve lifter (skirt portion 1) sliding surface of a valve lifter housing hole formed in the cylinder head 6, and reference numeral 9 denotes an eccentric cam fixed to a cam shaft.
【０００４】[0004]
【発明が解決しようとする課題】このバルブリフターを
組付けた動弁機構では、偏心カム９の回転に伴ってカム
９と天板３との接触点Ｐが図１６左右方向に移動する。
このため、天板３には、偏心荷重（カム９側の力Ｆ1 と
バルブステム４側の力Ｆ2 ）が作用して、天板３をカム
当接点を中心に揺動させ、天板３の揺動端側がスカート
部１から上方に脱落してしまうおそれがある。In the valve mechanism in which the valve lifter is assembled, the contact point P between the cam 9 and the top plate 3 moves in the horizontal direction in FIG. 16 as the eccentric cam 9 rotates.
Therefore, an eccentric load (a force F 1 on the cam 9 side and a force F 2 on the valve stem 4 side) acts on the top plate 3 to swing the top plate 3 about the cam contact point, and The rocking end side of 3 may fall off the skirt portion 1 upward.
【０００５】即ち、従来のバルブリフターでは、天板３
の下面は剛性強度に優れた側壁段部２で支持されている
が、天板３の上面はスカート部上端開口部１ａを内側に
加締めて（内側に曲げて）支持された構造となってお
り、天板３の揺動は内側に湾曲させたこのスカート部上
端開口縁部１ａによって阻止されているにすぎない。こ
のため天板３を揺動させようとする力により、このスカ
ート部上端開口縁部１ａには、曲げ応力が生じ、この曲
げ応力が繰り返して作用することで、上端開口縁部１ａ
が疲労し、ついには天板３が上方に外れてしまうのであ
る。That is, in the conventional valve lifter, the top plate 3
The lower surface of the top is supported by the side wall step portion 2 having excellent rigidity, but the upper surface of the top plate 3 is supported by swaging the skirt upper end opening 1a inward (bending inward). However, the swinging of the top plate 3 is only prevented by the inwardly curved upper end edge 1a of the skirt portion. Therefore, a bending stress is generated in the skirt upper end opening edge portion 1a by a force to swing the top plate 3, and the bending stress repeatedly acts, so that the upper end opening edge portion 1a.
Tired, and finally the top plate 3 came off upward.
【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、スカート部に加締め固定され
た天板の脱落しにくい内燃機関用バルブリフターを提供
することにある。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a valve lifter for an internal combustion engine in which a top plate crimped and fixed to a skirt does not easily fall off.
【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、請求項１に係わる内燃機関用バルブリフターにおい
ては、円筒型スカート部の上端開口部内側に天板が加締
め固定されてカップ型に構成された内燃機関用バルブリ
フターにおいて、前記スカート部の上端開口部内周縁
に、天板の上方への脱落を阻止する厚肉部を周設し、ス
カート部の下端開口部側からスカート部内に収容した天
板の外周縁を、スカート部を内側に塑性変形させて半径
方向内方に窪ませることでスカート部内側に突出する、
天板の下方への脱落を阻止する内方突起と、前記厚肉部
とによって、挟持するようにした。請求項２において
は、請求項１記載の内燃機関用バルブリフターにおい
て、前記内方突起を、全周又は周方向複数箇所に設ける
ようにした。請求項３においては、請求項１または２記
載の内燃機関用バルブリフターにおいて、前記天板の外
周縁に、スカート部の側壁に喰い込んで、天板を回り止
めする凹凸を形成するようにした。請求項４に係る内燃
機関用バルブリフターにおいては、円筒型スカート部の
上端開口部内側に天板が加締め固定されてカップ型に構
成された内燃機関用バルブリフターにおいて、前記スカ
ート部の上端開口部内周縁に、天板の上方への脱落を阻
止する厚肉部を周設するとともに、スカート部内周面の
天板下面に整合する位置に、周方向に延びる凹部を形成
し、スカート部の下端開口部側からスカート部内に収容
した天板の外周縁を、前記凹部に沿って配設した円環状
加締め部材を半径方向外方に塑性変形させてその一部を
前記凹部に充填することでスカート部に一体化された、
天板の下方への脱落を阻止する内方凸条部と、前記厚肉
部とによって、挟持するようにした。請求項５において
は、請求項４記載の内燃機関用バルブリフターにおい
て、前記凹部を、全周又は周方向複数箇所に設けるよう
にした。請求項６においては、請求項４または５記載の
内燃機関用バルブリフターにおいて、前記天板の外周縁
に、加締め部材に喰い込んで内燃機関用バルブリフター
天板を回り止めする凹凸を形成するようにした。請求項
７に係わる内燃機関用バルブリフターにおいては、円筒
型スカート部の上端開口部内側に天板が加締め固定され
てカップ型に構成された内燃機関用バルブリフターにお
いて、前記スカート部の上端開口部内周縁に、天板の上
方への脱落を阻止する厚肉部を周設するとともに、スカ
ート部内周面の天板下面に整合する位置には、周方向に
延びる凹部を形成し、スカート部の下端開口部側からス
カート部内に収容した天板の外周縁を、前記天板の外周
縁部下面に形成した凸条部を半径方向外方に塑性変形さ
せてその一部を前記凹部に充填することでスカート部に
一体化した、天板の下方への脱落を阻止する外方突起
と、前記厚肉部とによって、挟持するようにした。請求
項８においては、請求項７記載の内燃機関用バルブリフ
ターにおいて、前記凹部を、全周又は周方向複数箇所に
設けるようにした。請求項９に係わる内燃機関用バルブ
リフターにおいては、円筒型スカート部の端開口部内側
に天板が加締め固定されてカップ型に構成された内燃機
関用バルブリフターにおいて、前記スカート部の上端開
口部内周縁に、天板の上方への脱落を阻止する厚肉部を
周設するとともに、スカート部を薄肉に形成することで
天板取付位置にスカート部と厚肉部の中間の板厚をもつ
段差部が周設し、スカート部の下端開口部側からスカー
ト部内に収容した天板の外周縁を、前記段差部を塑性変
形させて半径方向内方に突出させることでスカート部内
側に形成した、天板の下方への脱落を阻止する内方突起
と、前記厚肉部とによって、挟持するようにした。請求
項１０においては、請求項９記載の内燃機関用バルブリ
フターにおいて、前記内方突起を全周又は周方向複数箇
所に設けるようにした。請求項１１においては、請求項
９または１０記載の内燃機関用バルブリフターにおい
て、前記天板の外周縁に、段差部に喰い込んで天板を回
り止めする凹凸を形成するようにした。次に、本発明の
作用について説明する。スカート部の上端開口部内周縁
に周設された厚肉部には、偏心カムの回転に伴って天板
を揺動させようとする力が、剪断力として作用するが、
厚肉部は軸方向の断面積が大きく、剪断強度に優れてい
るため、剪断力が繰り返し作用しても変形することがな
い。請求項１では、側壁を加締めにより内側に膨出させ
た内方突起によって、天板を下方から支持しており、剛
性強度に優れた内方突起は、変形することがない。請求
項４では、加締めによりスカート部に固定一体化した加
締め部材によって、天板を下方から支持しており、剪断
強度に優れた加締め部材は、変形することがない。請求
項７では、天板下面に形成された凸条部を加締めにより
外側に塑性変形させてスカート部に固定した外方突起に
よって、天板を下方から支持しており、剪断強度に優れ
た外方突起は、変形することがない。請求項９では、ス
カート部の側壁内側の天板取付位置に形成された段差部
を加締めにより内側に塑性変形させた内方突起によっ
て、天板を下方から支持しており、剪断強度に優れた内
方突起は、変形することがない。In order to achieve the above object, in a valve lifter for an internal combustion engine according to a first aspect of the present invention, a top plate is caulked and fixed inside an upper end opening of a cylindrical skirt portion and is cup-shaped. In the valve lifter for an internal combustion engine configured as described above, a thick wall portion that prevents the top plate from falling off is provided around the inner peripheral edge of the upper end opening of the skirt portion, and the skirt portion is inserted into the skirt portion from the lower end opening side. The outer peripheral edge of the housed top plate is protruded inside the skirt portion by plastically deforming the skirt portion inward and recessing inward in the radial direction,
The top plate is sandwiched by the inward projection that prevents the top plate from falling off and the thick portion. According to a second aspect, in the valve lifter for an internal combustion engine according to the first aspect, the inward protrusions are provided on the entire circumference or at a plurality of positions in the circumferential direction. According to a third aspect of the present invention, in the valve lifter for an internal combustion engine according to the first or second aspect, the outer peripheral edge of the top plate is recessed into the side wall of the skirt to form unevenness that prevents the top plate from rotating. . The valve lifter for an internal combustion engine according to claim 4, wherein the top plate is crimped and fixed to the inside of the upper end opening of the cylindrical skirt to form a cup shape. At the inner peripheral edge of the part, a thick part that prevents the top plate from falling off is provided, and a recess extending in the circumferential direction is formed at a position aligned with the bottom surface of the top plate on the inner peripheral surface of the skirt part. By plastically deforming the outer peripheral edge of the top plate housed in the skirt portion from the opening side outward in the radial direction of the annular caulking member arranged along the recess, and filling a part thereof in the recess. Integrated into the skirt,
The top plate is sandwiched by the inner ridge portion that prevents the top plate from falling off and the thick portion. According to a fifth aspect, in the valve lifter for an internal combustion engine according to the fourth aspect, the recesses are provided all around or at a plurality of positions in the circumferential direction. According to a sixth aspect of the present invention, in the valve lifter for an internal combustion engine according to the fourth or fifth aspect, the outer peripheral edge of the top plate is formed with unevenness that is caught in the caulking member to prevent the top plate of the valve lifter for the internal combustion engine from rotating. I did it. The valve lifter for an internal combustion engine according to claim 7, wherein the top plate is crimped and fixed to the inside of the upper end opening of the cylindrical skirt to form a cup shape. A thick part that prevents the top plate from falling off is provided around the inner peripheral edge of the part, and a concave portion that extends in the circumferential direction is formed at a position that aligns with the bottom surface of the top plate on the inner peripheral surface of the skirt part. The outer peripheral edge of the top plate housed in the skirt portion from the lower end opening side is plastically deformed outward in the radial direction by the convex ridge portion formed on the lower surface of the outer peripheral edge portion of the top plate to partially fill the concave portion. As a result, it is sandwiched by the thick portion and the outer projection that is integrated with the skirt and that prevents the top plate from falling off. According to an eighth aspect, in the valve lifter for an internal combustion engine according to the seventh aspect, the recesses are provided on the entire circumference or at a plurality of positions in the circumferential direction. The valve lifter for an internal combustion engine according to claim 9, wherein the top plate is crimped and fixed to the inside of the end opening of the cylindrical skirt to form a cup shape. Around the inner edge of the part, a thick part that prevents the top plate from falling off is provided, and the skirt part is formed thin so that the top plate mounting position has an intermediate plate thickness between the skirt part and the thick part. A stepped portion is provided around the skirt, and the outer peripheral edge of the top plate housed in the skirt from the lower end opening side of the skirt is formed inside the skirt by plastically deforming the stepped portion and projecting inward in the radial direction. The top plate is sandwiched by the inward projection that prevents the top plate from falling off and the thick portion. According to a tenth aspect, in the valve lifter for an internal combustion engine according to the ninth aspect, the inward protrusions are provided on the entire circumference or at a plurality of positions in the circumferential direction. In the eleventh aspect of the present invention, in the valve lifter for an internal combustion engine according to the ninth or tenth aspect, the outer peripheral edge of the top plate is formed with irregularities that bite into the step portion and prevent the top plate from rotating. Next, the operation of the present invention will be described. In the thick portion provided around the inner peripheral edge of the upper end opening of the skirt portion, a force that causes the top plate to swing with the rotation of the eccentric cam acts as a shearing force,
Since the thick portion has a large axial cross-sectional area and excellent shear strength, it does not deform even if the shearing force is repeatedly applied. According to the first aspect of the invention, the top plate is supported from below by the inward protrusion that is swollen inward by caulking the side wall, and the inward protrusion having excellent rigidity does not deform. According to the fourth aspect, the top plate is supported from below by the caulking member fixedly integrated with the skirt by caulking, and the caulking member excellent in shear strength does not deform. According to claim 7, the top plate is supported from below by the outer protrusions which are plastically deformed outward by caulking and the ridges formed on the lower surface of the top plate are fixed to the skirt portion, and the shear strength is excellent. The outer protrusion does not deform. According to claim 9, the top plate is supported from below by the inward projection that is plastically deformed inward by caulking the step portion formed at the top plate mounting position on the inside of the side wall of the skirt portion, and is excellent in shear strength. The inner protrusion does not deform.
【０００８】[0008]
【発明の実施の形態】次に、本発明の実施の形態を、実
施例に基づいて説明する。図１〜図６は、本発明の第１
の実施例を示し、図１は第１の実施例に係るバルブリフ
ターの縦断面図、図２は同バルブリフターの一部を破断
して示す斜視図、図３は天板の加締め固定部の拡大断面
図、図４は天板の側面図、図５は天板の底面図、図６
（ａ），（ｂ），（ｃ）は同バルブリフターの製造工程
を説明する説明図である。Next, embodiments of the present invention will be described based on examples. 1 to 6 show the first embodiment of the present invention.
FIG. 1 is a vertical cross-sectional view of the valve lifter according to the first embodiment, FIG. 2 is a perspective view showing a cutaway view of the valve lifter, and FIG. FIG. 4 is a side view of the top plate, FIG. 5 is a bottom view of the top plate, and FIG.
(A), (b), (c) is explanatory drawing explaining the manufacturing process of the valve lifter.
【０００９】これらの図において、バルブリフター１０
Ａは、円筒型のスカート部１２の上端開口部の内側に、
円盤状の天板１６が加締め固定されてカップ型に構成さ
れている。スカート部１２の素材としては、鉄鋼材料と
非鉄材料が考えられ、天板１６の素材としては、前記し
た材料の他に非金属材料が考えられる。スカート部１２
の上端開口部の肉厚ｔ2 がスカート部１２の側壁の肉厚
ｔ1 より内側に厚く形成されて、スカート部１２の上端
開口部の内側に、天板１６の外周縁が係合できる段差１
３ａが形成されている。即ち、スカート部１２の上端開
口部内周縁には、アウターシム１８のガイドとして機能
し、かつ天板１６の上方への脱落を阻止する厚肉部１３
が形成されている。In these figures, the valve lifter 10
A is inside the upper end opening of the cylindrical skirt portion 12,
A disk-shaped top plate 16 is caulked and fixed to form a cup type. As a material of the skirt portion 12, a steel material and a non-ferrous material can be considered, and a material of the top plate 16 can be a non-metal material in addition to the above-mentioned materials. Skirt part 12
The thickness t 2 of the upper end opening of the skirt portion 12 is formed to be thicker than the thickness t 1 of the side wall of the skirt portion 12, so that the outer peripheral edge of the top plate 16 can engage with the inside of the upper end opening portion of the skirt portion 12. 1
3a are formed. That is, at the inner peripheral edge of the upper end opening of the skirt portion 12, the thick portion 13 that functions as a guide for the outer shim 18 and prevents the top plate 16 from falling off.
Are formed.
【００１０】またスカート部１２の上端開口部に近い位
置には、スカート部１２の側壁を内側に窪ませることで
側壁が内側に膨出する内方突起１４が周設されて、天板
１６の外周縁を下方から支持した構造となっている。即
ち、天板１６は、厚肉部１３と内方突起１４とによって
外周縁部が上下方向に挟持されることで、スカート部１
２に固定一体化されている。Further, at a position near the upper end opening of the skirt portion 12, an inward projection 14 is formed around the side wall of the skirt portion 12 by denting the side wall of the skirt portion 12 inward so that the side wall bulges inward. The structure supports the outer edge from below. That is, in the top plate 16, the outer peripheral edge portion is vertically sandwiched by the thick-walled portion 13 and the inward projections 14, so that the skirt portion 1
It is fixedly integrated with 2.
【００１１】また天板１６の外周面には、全周にわたっ
てセレーション１６ａが形成されており、スカート部１
２の側壁を内側に加締めた時に、塑性変形した側壁の一
部がこのセレーション溝内に充填されて、天板１６の回
り止め機能が高められた構造となっている。また、円盤
状に形成された天板１６の中央部には、プレス成形によ
り、下方に皿型に突出するバルブステム当接部１７が形
成され、天板上１６にはカム９が当接するアウターシム
１８が載置されている。符号１９は、シムガイドである
厚肉部１３に形成された切欠で、天板１６に貼り付いた
アウターシム１８を剥がすための爪（図示せず）を図１
矢印Ａ方向に挿し込むための部位である。Further, serrations 16a are formed on the outer peripheral surface of the top plate 16 over the entire circumference, and the skirt portion 1
When the side wall 2 is swaged inward, a part of the side wall plastically deformed is filled in the serration groove, so that the top plate 16 has an enhanced anti-rotation function. In addition, a valve stem abutting portion 17 protruding downward in a dish shape is formed by press molding in the central portion of the disc-shaped top plate 16, and an outer member on which the cam 9 abuts on the top plate 16. A shim 18 is placed. Reference numeral 19 is a notch formed in the thick portion 13 which is a shim guide, and a claw (not shown) for peeling the outer shim 18 attached to the top plate 16 is shown in FIG.
This is a part to be inserted in the direction of arrow A.
【００１２】このバルブリフター１０Ａを製造するに
は、まず図６（ａ）に示すように、鋼管材の旋加工によ
り、一方の開口端部内側に厚肉部１３の周設された円筒
型のスカート部１２を形成する。次に、図６（ｂ）に示
すように、厚肉部１３の形成されていない開口端側から
（矢印方向から）スカート部１２内に天板１６を収容す
る。次に、図６（ｃ）に示すように、プレスにより、ス
カート部１２の側壁を内側に押圧して側壁に内方突起１
４を形成する。そして最後に、アウターシム取り出し用
の爪を挿し込むための切欠１９を形成する。In order to manufacture this valve lifter 10A, as shown in FIG. 6 (a), first, as shown in FIG. 6 (a), by turning a steel pipe material, a cylindrical type in which a thick wall portion 13 is provided inside one opening end is provided. The skirt portion 12 is formed. Next, as shown in FIG. 6B, the top plate 16 is housed in the skirt portion 12 from the opening end side where the thick portion 13 is not formed (from the arrow direction). Next, as shown in FIG. 6 (c), the side wall of the skirt portion 12 is pressed inward by a press to push the inward projection 1 on the side wall.
4 is formed. And finally, the notch 19 for inserting the claw for taking out the outer shim is formed.
【００１３】なお、天板１６を加締め加工した後に熱処
理を行って、強度および耐磨耗性を高めるようにしても
よい。このバルブリフター１０Ａにおいては、カム９の
回転に伴って天板１６には偏心荷重が作用し、これによ
って天板１６を脱落させようとする力が剪断力として厚
肉部１３に作用する。しかし、厚肉部１３の軸方向（剪
断力作用方向）の断面積は大きく、剪断強度に優れてい
るため、繰り返して剪断力が厚肉部１３に作用しても、
この厚肉部１３が変形するおそれはない。即ち、天板１
６が上方に脱落するおそれはない。The top plate 16 may be heat-treated after being crimped to enhance its strength and abrasion resistance. In the valve lifter 10A, an eccentric load acts on the top plate 16 as the cam 9 rotates, and a force that causes the top plate 16 to drop off acts on the thick portion 13 as a shearing force. However, since the cross-sectional area of the thick portion 13 in the axial direction (shearing force acting direction) is large and the shear strength is excellent, even if the shearing force repeatedly acts on the thick portion 13,
There is no possibility that the thick portion 13 will be deformed. That is, the top plate 1
There is no danger that 6 will fall out.
【００１４】また天板１６は、剛性強度に優れた内方突
起１４によって、下方から支持されていることから、天
板１６が下方に脱落するおそれも当然にない。なお、前
記した第１の実施例では、スカート部１２に内方突起１
４が全周にわたって形成されていたが、周方向等分複数
箇所に内方突起を設けて天板１６を加締め固定するよう
にしてもよい。Further, since the top plate 16 is supported from below by the inward projection 14 having excellent rigidity, there is no possibility that the top plate 16 will fall down. In addition, in the first embodiment described above, the inner protrusion 1 is formed on the skirt portion 12.
Although 4 is formed over the entire circumference, inward projections may be provided at a plurality of positions equally divided in the circumferential direction to fix the top plate 16 by caulking.
【００１５】図７〜図１０は、本発明の第２の実施例を
示し、図７は第２の実施例に係るバルブリフターの縦断
面図、図８は天板の加締め固定部の拡大断面図、図９は
天板の側面図、図１０は天板の底面図である。この第２
の実施例におけるバルブリフター１０Ｂでは、加締め部
材２０を使うことで、天板１６をスカート部１２に固定
した構造となっている。即ち、スカート部１２の厚肉部
１３近傍の内周面には、凹部である凹溝２２が周設され
ており、スカート部１２内に段差１３ａに当接するよう
に収容した天板１６の外周縁に沿って断面矩形状の円環
状加締め部材２０を配置し、この加締め部材２０を例え
ばパンチ２４を使って半径方向外方に塑性変形させてそ
の一部２０ａを凹溝２２に充填することで、天板１６を
スカート部１２に固定した構造となっている。7 to 10 show a second embodiment of the present invention, FIG. 7 is a vertical sectional view of a valve lifter according to the second embodiment, and FIG. 8 is an enlarged view of a caulking fixing portion of a top plate. A sectional view, FIG. 9 is a side view of the top plate, and FIG. 10 is a bottom view of the top plate. This second
The valve lifter 10B in the above embodiment has a structure in which the top plate 16 is fixed to the skirt portion 12 by using the caulking member 20. That is, the inner circumferential surface of the skirt portion 12 in the vicinity of the thick portion 13 is provided with a concave groove 22 which is a concave portion, and the outer portion of the top plate 16 accommodated in the skirt portion 12 so as to abut the step 13a. An annular caulking member 20 having a rectangular cross section is arranged along the periphery, and the caulking member 20 is plastically deformed outward in the radial direction by using, for example, a punch 24 to fill a part 20a of the caulking groove 22. Thus, the top plate 16 is fixed to the skirt portion 12.
【００１６】また天板１６の外周縁下面側には、スリッ
ト１６ｂが等ピッチに形成されており、加締め部材２０
を加締める際に、塑性変形した加締め部材２０の一部が
このスリット１６ｂ内にも充填して、天板１６がスカー
ト部１２に対し確実に回り止めされた構造となってい
る。この第２の実施例では、凹溝２２に一部が充填する
ことで、固定された加締め部材２０が天板１６を下方か
ら支持する構造となっているが、塑性変形してスカート
部１２に一体化された加締め部材２０は、軸方向（剪断
力作用方向）の断面積が大きく、剪断強度に優れている
ことから、天板１６に偏心荷重が繰り返し作用したとし
ても、加締め部材２０が変形して天板１６が下方に脱落
するおそれはない。Further, slits 16b are formed on the lower surface of the outer peripheral edge of the top plate 16 at equal pitches, and the caulking member 20 is provided.
When the caulking is performed, a part of the caulking member 20 that is plastically deformed is filled also in the slit 16b, so that the top plate 16 is securely prevented from rotating with respect to the skirt portion 12. In the second embodiment, the concave groove 22 is partially filled so that the fixed caulking member 20 supports the top plate 16 from below, but the skirt portion 12 is plastically deformed. The caulking member 20 integrated into the caulking member 20 has a large cross-sectional area in the axial direction (shearing force acting direction) and is excellent in shear strength. Therefore, even if the eccentric load repeatedly acts on the top plate 16, the caulking member 20 There is no possibility that the top plate 16 will fall off due to the deformation of the top plate 20.
【００１７】なお前記した第２の実施例では、スカート
部１２に凹溝２２が全周にわたって形成されていたが、
周方向等分複数箇所に凹溝を設けて、加締め部材２０の
凹溝に対応する部位だけを加締めるようにしてもよい。
図１１および図１２は、本発明の第３の実施例を示し、
図１１は第３の実施例に係るバルブリフターの縦断面
図、図１２は天板の加締め固定部の拡大断面図である。In the second embodiment described above, the groove 22 is formed in the skirt portion 12 over the entire circumference.
It is also possible to provide concave grooves at a plurality of positions equally divided in the circumferential direction and to caulk only a portion of the caulking member 20 corresponding to the concave groove.
11 and 12 show a third embodiment of the present invention,
FIG. 11 is a vertical sectional view of a valve lifter according to the third embodiment, and FIG. 12 is an enlarged sectional view of a caulking fixing portion of a top plate.
【００１８】この第３の実施例に係るバルブリフター１
０Ｃでは、加締め部材２０を使うことなく、天板１６の
一部を塑性変形させて、その一部をスカート部１２側の
凹部である凹溝２２に充填することで、天板１６をスカ
ート部１２に固定した構造となっている。即ち、スカー
ト部１２には、第２の実施例と同様、凹溝２２が周設さ
れ、天板１６の下面外周縁には、凸条部２６が全周にわ
たって形成されている。そして、例えばパンチ２４を使
って凸条部２６を半径方向外方に塑性変形させて、その
一部２６ａ（外方突起）を凹溝２２に充填させること
で、天板１６をスカート部１２に固定した構造となって
いる。The valve lifter 1 according to the third embodiment.
In 0C, without using the caulking member 20, a part of the top plate 16 is plastically deformed and the part is filled in the concave groove 22 on the side of the skirt portion 12, so that the top plate 16 is skirted. The structure is fixed to the portion 12. That is, similar to the second embodiment, the groove 22 is provided around the skirt portion 12, and the ridge portion 26 is formed on the entire outer periphery of the lower surface of the top plate 16. Then, for example, the convex strip portion 26 is plastically deformed outward in the radial direction by using the punch 24, and the portion 26a (outer projection) is filled in the concave groove 22, so that the top plate 16 is attached to the skirt portion 12. It has a fixed structure.
【００１９】なお凹溝２２を周方向等分複数箇所に形成
して、凸条部２６の凹溝２２に対応する部位だけを加締
める構造にしてもよい。図１３〜図１４は、本発明の第
４の実施例を示し、図１３は第４の実施例に係るバルブ
リフターの縦断面図、図１４は天板の加締め固定部の拡
大断面図である。The recessed groove 22 may be formed at a plurality of locations equally divided in the circumferential direction, and only the portion of the ridge portion 26 corresponding to the recessed groove 22 may be crimped. 13 to 14 show a fourth embodiment of the present invention, FIG. 13 is a vertical sectional view of a valve lifter according to the fourth embodiment, and FIG. 14 is an enlarged sectional view of a caulking fixing portion of a top plate. is there.
【００２０】この第４の実施例に係るバルブリフター１
０Ｄでは、スカート部１２の側壁の肉厚ｔ3 が、前記し
た第１〜第３の実施例におけるスカート部１２の側壁の
肉厚ｔ1 よりも薄く形成されるとともに、スカート部１
２における天板取付位置の肉厚ｔ4 がスカート部１２の
側壁の肉厚ｔ3 と厚肉部１３の肉厚ｔ2 の中間の肉厚に
形成され、即ち、天板取付位置に、側壁と厚肉部１３の
中間の肉厚ｔ4 をもつ段差部２８が形成され、この段差
部２８を半径方向内方に塑性変形させることで、天板１
６をスカート部１２に固定した構造となっている。The valve lifter 1 according to the fourth embodiment.
At 0D, the side wall thickness t 3 of the skirt portion 12 is formed thinner than the side wall thickness t 1 of the skirt portion 12 in the first to third embodiments described above, and the skirt portion 1 is formed.
The wall thickness t 4 at the top plate mounting position in Fig. 2 is formed between the wall thickness t 3 of the side wall of the skirt portion 12 and the wall thickness t 2 of the thick wall portion 13, that is, at the top plate mounting position. A step portion 28 having a middle thickness t 4 between the thick portion 13 and the thick portion 13 is formed, and the step portion 28 is plastically deformed inward in the radial direction, whereby the top plate 1
6 is fixed to the skirt portion 12.
【００２１】具体的には、例えば図１４符号２５で示す
ような切り込み刃２５ａをもつパンチ２５を使って、段
差部２８を側壁との境で切り込み、かつ内側に塑性変形
させて、内方突起２８ａを形成し、この内方突起２８ａ
によって天板１６を下方から支持した構造となってい
る。なお、前記した第１〜第４の実施例では、いずれも
天板１６にアウターシム１８が載置される構造のバルブ
リフターについて説明したが、図１５に示すように、カ
ムが直接天板に当接しアウターシムが不要な構造のバル
ブリフター１０Ｅにおいても、本発明を同様に適用でき
る。そして、このバルブリフター１０Ｅでは、スカート
部１２の上端開口部に切欠１９を形成する必要がない。Specifically, for example, a punch 25 having a cutting blade 25a as shown by reference numeral 25 in FIG. 14 is used to cut the step portion 28 at the boundary with the side wall and to plastically deform the step portion 28 inward so as to inwardly project. 28a, and the inward projection 28a
Has a structure in which the top plate 16 is supported from below. In each of the above-described first to fourth embodiments, the valve lifter having the structure in which the outer shim 18 is placed on the top plate 16 has been described, but as shown in FIG. 15, the cam directly contacts the top plate. The present invention can be similarly applied to the valve lifter 10E having a structure in which it abuts and does not require an outer shim. Further, in this valve lifter 10E, it is not necessary to form the notch 19 in the upper end opening of the skirt portion 12.
【００２２】また、前記した種々の実施例では、天板１
６の外径がスカート部１２の側壁の内径に整合する大き
さに形成されて、天板１６の外周面とスカート部１２の
内周面間には圧接力がほとんど作用していないが、天板
１６の外径をスカート部１２の側壁の内径よりわずかに
大きく形成して、天板１６をスカート部１２に圧入した
後、第１〜第５の実施例を適用することで、天板１６と
スカート部１２間結合部の結合強度を高めた構造にして
もよい。Also, in the various embodiments described above, the top plate 1
The outer diameter of 6 is formed so as to match the inner diameter of the side wall of the skirt portion 12, and almost no pressure contact force acts between the outer peripheral surface of the top plate 16 and the inner peripheral surface of the skirt portion 12. After forming the outer diameter of the plate 16 slightly larger than the inner diameter of the side wall of the skirt portion 12 and press-fitting the top plate 16 into the skirt portion 12, by applying the first to fifth embodiments, the top plate 16 A structure may be employed in which the bonding strength between the skirt portion 12 and the skirt portion 12 is increased.
【００２３】[0023]
【発明の効果】以上の説明から明らかなように、本発明
に係る内燃機関用バルブリフターによれば、スカート部
の上端開口部内周縁に周設された厚肉部によって、天板
が上方から支持されているため、天板が上方に外れるこ
とがない。また請求項１では、剛性強度に優れた内方突
起により、請求項４では、剪断強度の優れた加締め部材
により、請求項７では、剪断強度に優れた外方突起によ
り、請求項９では、剪断強度に優れた内方突起により、
それぞれ天板が下方から支持されているため、天板が下
方に外れることもない。As is apparent from the above description, according to the valve lifter for an internal combustion engine of the present invention, the top plate is supported from above by the thick wall portion provided around the inner peripheral edge of the upper end opening of the skirt portion. Therefore, the top plate does not come off upward. Further, in claim 1, an inward projection having excellent rigidity strength, in claim 4, a caulking member having excellent shear strength, in claim 7, an outer projection having excellent shear strength, and in claim 9, , Due to the inward projection with excellent shear strength,
Since the tops are supported from below, the tops do not come off.
【図１】本発明の第１の実施例に係るバルブリフターの
縦断面図FIG. 1 is a vertical sectional view of a valve lifter according to a first embodiment of the present invention.
【図２】同バルブリフターの一部を破断して示す斜視図FIG. 2 is a perspective view showing a cutaway portion of the valve lifter.
【図３】天板の加締め固定部の拡大断面図FIG. 3 is an enlarged cross-sectional view of a caulking fixing portion of the top plate.
【図４】天板の側面図FIG. 4 is a side view of the top plate.
【図５】天板の底面図[Fig. 5] Bottom view of the top plate
【図６】（ａ），（ｂ），（ｃ）同バルブリフターの製
造工程を説明する説明図FIG. 6 (a), (b), (c) an explanatory view illustrating a manufacturing process of the valve lifter.
【図７】本発明の第２の実施例に係るバルブリフターの
縦断面図FIG. 7 is a vertical sectional view of a valve lifter according to a second embodiment of the present invention.
【図８】天板の加締め固定部の拡大断面図FIG. 8 is an enlarged cross-sectional view of a caulking fixing portion of the top plate.
【図９】天板の側面図FIG. 9 is a side view of the top plate.
【図１０】天板の底面図FIG. 10 is a bottom view of the top plate.
【図１１】本発明の第３の実施例に係るバルブリフター
の縦断面図FIG. 11 is a vertical cross-sectional view of a valve lifter according to a third embodiment of the present invention.
【図１２】天板の加締め固定部の拡大断面図FIG. 12 is an enlarged cross-sectional view of a caulking fixing portion of the top plate.
【図１３】本発明の第４の実施例に係るバルブリフター
の縦断面図FIG. 13 is a vertical sectional view of a valve lifter according to a fourth embodiment of the present invention.
【図１４】天板の加締め固定部の拡大断面図FIG. 14 is an enlarged cross-sectional view of a caulking fixing portion of the top plate.
【図１５】本発明の第５の実施例に係るバルブリフター
の縦断面図FIG. 15 is a vertical sectional view of a valve lifter according to a fifth embodiment of the present invention.
【図１６】従来の内燃機関用バルブリフターの断面図FIG. 16 is a cross-sectional view of a conventional valve lifter for an internal combustion engine.
１０Ａ，１０Ｂ，１０Ｃ，１０Ｄ，１０Ｅ バルブリ
フター １２ スカート部 １６ 天板 １３ 厚肉部 １３ａ 段差 １４ 内方突起 ２０ 加締め部材（内方凸条部） ２２ 凹部である凹溝 ２６ 天板の外側縁下面に形成された凸条部 ２６ａ 外方突起 ２８ 段差部 ２８ａ 内方突起10A, 10B, 10C, 10D, 10E Valve lifter 12 Skirt portion 16 Top plate 13 Thick portion 13a Step 14 Inner protrusion 20 Caulking member (inner ridge portion) 22 Recessed groove 26 Recessed edge of top plate Convex ridges 26a formed on the lower surface Outer protrusion 28 Stepped portion 28a Inner protrusion
Claims (11)
板が加締め固定されてカップ型に構成された内燃機関用
バルブリフターにおいて、前記スカート部の上端開口部
内周縁には、天板の上方への脱落を阻止する厚肉部が周
設され、スカート部の下端開口部側からスカート部内に
収容された天板の外周縁が、スカート部を内側に塑性変
形させて半径方向内方に窪ませることでスカート部内側
に突出する、天板の下方への脱落を阻止する内方突起
と、前記厚肉部とによって、挟持されたことを特徴とす
る内燃機関用バルブリフター。1. A valve lifter for an internal combustion engine, wherein a top plate is crimped and fixed to the inside of an upper end opening of a cylindrical skirt portion to form a cup shape. A thick part is installed around the skirt to prevent it from falling upward, and the outer peripheral edge of the top plate housed in the skirt from the lower end opening side of the skirt plastically deforms the skirt inward to move radially inward. A valve lifter for an internal combustion engine, wherein the valve lifter is sandwiched by an inward projection that protrudes inside the skirt when recessed and that prevents the top plate from falling down, and the thick portion.
所に設けられたことを特徴とする請求項１記載の内燃機
関用バルブリフター。2. The valve lifter for an internal combustion engine according to claim 1, wherein the inward projections are provided at the entire circumference or at a plurality of positions in the circumferential direction.
壁に喰い込んで、天板を回り止めする凹凸が形成された
ことを特徴とする請求項１又は２記載の内燃機関用バル
ブリフター。3. The valve for an internal combustion engine according to claim 1 or 2, wherein an outer peripheral edge of the top plate is formed with an unevenness that bites into a side wall of the skirt portion to prevent the top plate from rotating. Lifter.
板が加締め固定されてカップ型に構成された内燃機関用
バルブリフターにおいて、前記スカート部の上端開口部
内周縁には、天板の上方への脱落を阻止する厚肉部が周
設されるとともに、スカート部内周面の天板下面に整合
する位置には、周方向に延びる凹部が形成され、スカー
ト部の下端開口部側からスカート部内に収容された天板
の外周縁が、前記凹部に沿って配設した円環状加締め部
材を半径方向外方に塑性変形させてその一部を前記凹部
に充填することでスカート部に一体化された、天板の下
方への脱落を阻止する内方凸条部と、前記厚肉部とによ
って、挟持されたことを特徴とする内燃機関用バルブリ
フター。4. A valve lifter for an internal combustion engine, wherein a top plate is crimped and fixed to the inside of an upper end opening of a cylindrical skirt portion to form a cup shape. A thick part is provided around the skirt to prevent the skirt from falling upward, and a recess extending in the circumferential direction is formed at a position aligned with the lower surface of the top plate on the inner peripheral surface of the skirt. The outer peripheral edge of the top plate housed inside the part is integrally deformed with the skirt by plastically deforming the annular caulking member arranged along the recess outward in the radial direction and filling a part of the recess into the recess. A valve lifter for an internal combustion engine, wherein the valve lifter is sandwiched between the thickened portion and an inwardly projecting ridge portion that prevents the top plate from falling down.
設けられたことを特徴とする請求項４記載の内燃機関用
バルブリフター。5. The valve lifter for an internal combustion engine according to claim 4, wherein the recess is provided at the entire circumference or at a plurality of positions in the circumferential direction.
い込んで天板を回り止めする凹凸が形成されたことを特
徴とする請求項４又は５記載の内燃機関用バルブリフタ
ー。6. The valve lifter for an internal combustion engine according to claim 4, wherein the outer peripheral edge of the top plate is formed with irregularities that bit into the caulking member to prevent the top plate from rotating.
板が加締め固定されてカップ型に構成された内燃機関用
バルブリフターにおいて、前記スカート部の上端開口部
内周縁には、天板の上方への脱落を阻止する厚肉部が周
設されるとともに、スカート部内周面の天板下面に整合
する位置には、周方向に延びる凹部が形成され、スカー
ト部の下端開口部側からスカート部内に収容された天板
の外周縁が、前記天板の外周縁部下面に形成された凸条
部を半径方向外方に塑性変形させてその一部を前記凹部
に充填することでスカート部に一体化された、天板の下
方への脱落を阻止する外方突起と、前記厚肉部とによっ
て、挟持されたことを特徴とする内燃機関用バルブリフ
ター。7. A valve lifter for an internal combustion engine, wherein a top plate is crimped and fixed to the inside of an upper end opening of a cylindrical skirt portion to form a cup shape, and a top plate is provided at an inner peripheral edge of the upper end opening of the skirt portion. A thick part is provided around the skirt to prevent the skirt from falling upward, and a recess extending in the circumferential direction is formed at a position aligned with the lower surface of the top plate on the inner peripheral surface of the skirt. The outer peripheral edge of the top plate housed inside the skirt portion is formed by plastically deforming the ridge portion formed on the lower surface of the outer peripheral edge portion of the top plate outward in the radial direction and partially filling the concave portion. A valve lifter for an internal combustion engine, characterized in that the valve lifter is sandwiched by an outer projection integrated with the outer projection for preventing the top plate from falling down and the thick portion.
設けられたことを特徴とする請求項７記載の内燃機関用
バルブリフター。8. The valve lifter for an internal combustion engine according to claim 7, wherein the recess is provided at the entire circumference or at a plurality of positions in the circumferential direction.
板が加締め固定されてカップ型に構成された内燃機関用
バルブリフターにおいて、前記スカート部の上端開口部
内周縁には、天板の上方への脱落を阻止する厚肉部が周
設されるとともに、スカート部を薄肉に形成することで
天板取付位置にスカート部と厚肉部の中間の板厚をもつ
段差部が周設され、スカート部の下端開口部側からスカ
ート部内に収容された天板の外周縁が、前記段差部を塑
性変形させて半径方向内方に突出させることでスカート
部内側に形成された、天板の下方への脱落を阻止する内
方突起と、前記厚肉部とによって、挟持されたことを特
徴とする内燃機関用バルブリフター。9. A valve lifter for an internal combustion engine, wherein a top plate is crimped and fixed to the inside of an upper end opening of a cylindrical skirt portion to form a cup shape, and a top plate is provided at an inner peripheral edge of the upper end opening of the skirt portion. The thick part that prevents the upper part from falling is provided around it, and by forming the skirt part thinly, a step part having a plate thickness intermediate between the skirt part and the thick part is provided around the top plate mounting position. The outer peripheral edge of the top plate accommodated in the skirt portion from the lower end opening side of the skirt portion is formed on the inside of the skirt portion by plastically deforming the step portion and protruding inward in the radial direction. A valve lifter for an internal combustion engine, wherein the valve lifter is sandwiched by an inward projection that prevents the downward drop and the thick portion.
所に設けられたことを特徴とする請求項９記載の内燃機
関用バルブリフター。10. The valve lifter for an internal combustion engine according to claim 9, wherein the inward projections are provided at the entire circumference or at a plurality of positions in the circumferential direction.
んで天板を回り止めする凹凸が形成されたことを特徴と
する請求項９又は１０記載の内燃機関用バルブリフタ
ー。11. The valve lifter for an internal combustion engine according to claim 9, wherein unevenness is formed on an outer peripheral edge of the top plate so as to prevent the top plate from rotating by being cut into the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34046795A JP3546105B2 (en) | 1995-12-27 | 1995-12-27 | Valve lifter for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34046795A JP3546105B2 (en) | 1995-12-27 | 1995-12-27 | Valve lifter for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09177512A true JPH09177512A (en) | 1997-07-08 |
| JP3546105B2 JP3546105B2 (en) | 2004-07-21 |
Family
ID=18337249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34046795A Expired - Fee Related JP3546105B2 (en) | 1995-12-27 | 1995-12-27 | Valve lifter for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3546105B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10360467A1 (en) * | 2003-12-22 | 2005-07-21 | Trw Deutschland Gmbh | Mechanical valve tappets e.g. for combustion engine, have load divider plate and cup for tappet body with cap where load divider plate on inside of cap of body lies is firmly connected |
| JP2013530073A (en) * | 2010-07-02 | 2013-07-25 | ペッパール プルス フクス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Metal-plastic connection |
-
1995
- 1995-12-27 JP JP34046795A patent/JP3546105B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10360467A1 (en) * | 2003-12-22 | 2005-07-21 | Trw Deutschland Gmbh | Mechanical valve tappets e.g. for combustion engine, have load divider plate and cup for tappet body with cap where load divider plate on inside of cap of body lies is firmly connected |
| DE10360467B4 (en) * | 2003-12-22 | 2011-11-10 | Trw Deutschland Gmbh | Mechanical valve lifter |
| JP2013530073A (en) * | 2010-07-02 | 2013-07-25 | ペッパール プルス フクス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Metal-plastic connection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3546105B2 (en) | 2004-07-21 |
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