JP2008249001A - Connecting rod assembly - Google Patents

Connecting rod assembly Download PDF

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Publication number
JP2008249001A
JP2008249001A JP2007090046A JP2007090046A JP2008249001A JP 2008249001 A JP2008249001 A JP 2008249001A JP 2007090046 A JP2007090046 A JP 2007090046A JP 2007090046 A JP2007090046 A JP 2007090046A JP 2008249001 A JP2008249001 A JP 2008249001A
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end portion
laminated
connecting rod
rod assembly
parts
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Toshiyuki Kobashi
俊之 小橋
Masa Nishimura
雅 西村
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2007090046A priority Critical patent/JP2008249001A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/08—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads made from sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting rod assembly in which annular parts press-fitted into a large end portion and a small end portion are not deformed though its structure is simple. <P>SOLUTION: This connecting rod assembly comprises: a stacked body 2 formed by stacking pressed plate-like stacking parts 2A-2F; and the pair of annular parts 3, 4 press-fitted into the fitting holes 2aa, 2ba of the large end portion 2a and the small end portion 2b formed on the stacked body 2. In the connecting rod assembly 1, the stacked number of parts at each of the large end portion 2a and the small end portion 2b of the stacked body 2 is larger than the stacked number of parts at a stacked body center part 2c between the large end portion 2a and the small end portion 2b, and the thickness of each of the large end portion 2a and the small end portion 2b is larger than that of the stacked body center part 2c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、エンジンに用いられるコンロッドアセンブリに関する。   The present invention relates to a connecting rod assembly used in an engine.

エンジンに用いられるコンロッドは、棒鋼材、板材からの鍛造、焼結、または拘束加圧成形等により製造されている。この他に、鋼板のプレス加工により打ち抜き形成される場合がある。コンロッドを、このような鍛造や焼結で製造する場合、工程数が多いため、コスト削減が困難である。一方、簡単かつ安価に製造でき、大端部分や小端部分に取付けられる軸受等の傾きが回避され、曲げ強度と座屈強度の向上も図られるコンロッドアッセンブリとして、それぞれ大端部分、小端部分、およびロッド部分を有する板状の分割コンロッド部品を積層して一体に固定した積層コンロッドアッセンブリが提案されている（例えば、特許文献１および特許文献２）。   A connecting rod used for an engine is manufactured by forging, sintering, or constraining pressure forming from a steel bar or plate material. In addition, it may be formed by stamping by pressing a steel plate. When the connecting rod is manufactured by such forging or sintering, it is difficult to reduce the cost because of the large number of steps. On the other hand, connecting rod assemblies that can be manufactured easily and inexpensively, avoid tilting of the bearings attached to the large and small end portions, and improve bending strength and buckling strength, respectively. And a laminated connecting rod assembly in which plate-shaped divided connecting rod parts having rod portions are laminated and fixed integrally have been proposed (for example, Patent Document 1 and Patent Document 2).

特許文献１のコンロッドアセンブリは、分割コンロッド部品を積層し、大端部分および小端部分に円環状部品を圧入して構成されるものである。また、特許文献２には、プレス加工した結合用の突起および凹部によって分割コンロッド部品を積層一体に結合固定することが開示されている。
特開２００３−１５６０２８号公報 特開２００４−３２４７６０号公報 The connecting rod assembly of Patent Document 1 is configured by stacking divided connecting rod parts and press-fitting annular parts into a large end part and a small end part. Further, Patent Document 2 discloses that the divided connecting rod parts are integrally bonded and fixed by press-bonded projections and recesses.
JP 2003-156028 A JP 2004-324760 A

上記のような従来の積層コンロッドアセンブリは、同一形状であるコンロッド積層部品を積層し、大端部分および小端部分に円環状部品を圧入するため、積層体の厚みは均一であり、両端に圧入された円環状部品が出っ張った形状となる。このような積層コンロッドアセンブリをエンジンに組付けた状態を図８（Ａ）に概念的に示す。図８（Ｂ）はこの組付け使用状態で生じる現象を概念的に示す小端部分の拡大図である。図示の積層コンロッドアセンブリ１００は、プレス加工された２枚の板状積層部品１０１を積層し、その大端部分１０２および小端部分１０３のそれぞれの嵌合孔１０２ａ，１０３ａに、円環状部品１０４，１０５を圧入して構成されたものである。円環状部品１０４，１０５は、例えばソリッド円管からなる。図８（Ｂ）は小端部分１０３の円環状部品１０５を示し、このソリッド円管内に保持器付き針状ころ１０６を配置した軸受とされている。この積層コンロッドアセンブリ１００における大端部分１０２は、円環状部品１０４を介しクランク本体５０のクランクピン５１にその軸心周りに相対回転可能に嵌合結合され、また小端部分１０３は、円環状部品１０５を介しピストン６０のピストンピン６１にその軸心周りに相対回転可能に嵌合結合されている。クランクピン５１は、クランクシャフト５２に対し、一対のアーム５３間に偏心状態で固定され、この両アーム５３のクランクピン５１とは反対部分にはバランスウエイト５３ａが形成されている。   In the conventional laminated connecting rod assembly as described above, the connecting rod laminated parts having the same shape are laminated, and the annular parts are press-fitted into the large end part and the small end part. The formed annular part has a protruding shape. A state where such a laminated connecting rod assembly is assembled to the engine is conceptually shown in FIG. FIG. 8B is an enlarged view of a small end portion conceptually showing the phenomenon that occurs in this assembled and used state. The laminated connecting rod assembly 100 shown in the figure laminates two pressed plate-like laminated parts 101, and the annular parts 104, 103 a are inserted into the respective fitting holes 102 a, 103 a of the large end part 102 and the small end part 103. 105 is press-fitted. The annular parts 104 and 105 are made of, for example, a solid circular pipe. FIG. 8B shows an annular part 105 of the small end portion 103, which is a bearing in which needle rollers 106 with a cage are arranged in this solid circular pipe. The large end portion 102 of the laminated connecting rod assembly 100 is fitted and coupled to the crankpin 51 of the crank body 50 via an annular part 104 so as to be relatively rotatable about its axis, and the small end part 103 is constituted by an annular part. Through 105, the piston pin 61 of the piston 60 is fitted and coupled so as to be rotatable about its axis. The crankpin 51 is fixed in an eccentric state between the pair of arms 53 with respect to the crankshaft 52, and a balance weight 53a is formed at a portion of the both arms 53 opposite to the crankpin 51.

上記一対のバランスウエイト５３ａは、その構成上、対向部の間隔が小さく形成され、この狭い間隙を通過することになる積層体の肉厚が制約される。クランクの種類によっては、この間隔が小さいものがあり、その為、図示のように板状積層部品１０１の積層枚数を増やすことができず、嵌合孔１０２ａ，１０３ａに圧入された円環状部品１０４，１０５の両側への出っ張り部分が大きくなる。このように、積層体の肉厚が薄く、円環状部品１０４，１０５はその出っ張り部分が大きいため、積層体とはその円環中央部のみでの嵌め合いとなり、図８（Ｂ）に示すように、中央部への応力の集中により円環状部品１０５（１０４）が鼓状に変形する可能性がある。このような変形が生じると、エンジンの作動に支障を来たすことにもなる。   The pair of balance weights 53a are formed so that the interval between the opposing portions is small due to the configuration, and the thickness of the laminate that passes through this narrow gap is limited. Depending on the type of crank, this interval may be small. Therefore, as shown in the figure, the number of stacked plate-like laminated parts 101 cannot be increased, and the annular part 104 press-fitted into the fitting holes 102a and 103a. , 105 bulges on both sides become larger. Thus, since the thickness of the laminated body is thin and the protruding parts of the annular parts 104 and 105 are large, the laminated body is fitted only at the center of the annular ring, as shown in FIG. 8B. In addition, the annular component 105 (104) may be deformed into a drum shape due to the concentration of stress on the central portion. If such deformation occurs, it will also hinder the operation of the engine.

この発明の目的は、簡単な構造でありながら、大端部分および小端部分に圧入された円環状部品の変形を生じることのないコンロッドアセンブリを提供することである。   An object of the present invention is to provide a connecting rod assembly that has a simple structure but does not cause deformation of an annular part press-fitted into a large end portion and a small end portion.

第１の発明にかかるコンロッドアセンブリは、プレス加工された板状の積層部品を積層してなる積層体、およびこの積層体に設けられた大端部分および小端部分の嵌合孔にそれぞれ圧入された一対の円環状部品を有するコンロッドアセンブリにおいて、前記積層体の前記大端部分および小端部分の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くし、前記大端部分と小端部分の肉厚を前記積層体中央部の肉厚よりも厚くしたことを特徴とするものである。   A connecting rod assembly according to a first aspect of the present invention is press-fitted into a laminated body formed by laminating pressed plate-like laminated parts and fitting holes in a large end portion and a small end portion provided in the laminated body. In the connecting rod assembly having a pair of annular parts, the number of stacked layers of the large end portion and the small end portion of the stacked body is larger than the number of stacked layers in the central portion of the stacked body between the large end portion and the small end portion. In addition, the thickness of the large end portion and the small end portion is greater than the thickness of the central portion of the laminate.

この構成のコンロッドアセンブリは、例えば、エンジンにおけるピストンからクランクシャフトへの駆動伝達手段として用いられる。具体的には、小端部分をその嵌合孔に圧入された円環状部品を介してピストンのピストンピンに相対回転可能に嵌合結合し、大端部分をその嵌合孔に圧入された円環状部品を介してクランクのクランクピンに相対回転可能に嵌合結合する。これによって、ピストンの往復運動をクランクシャフトの軸回転運動に変換伝達する駆動伝達手段として用いられる。この場合、積層体中央部は、この駆動伝達運動の際、一対のバランスウエイト同士の間隔を通過し得るようその肉厚、すなわち、積層枚数の設定がなされる。一方、大端部分および小端部分は、バランスウエイト同士の間隔の制約を受けないので、その積層体の積層枚数を中央部より多くし、大端部分および小端部分の肉厚を積層体中央部の肉厚より厚くできる。したがって、大端部分および小端部分の嵌合孔に圧入される円環状部品の積層体の両側への出っ張り量が少なくなり、これによって、円環状部品の積層体に対する嵌め合いが肉厚の厚い部分でなされ、嵌め合い幅が広くなることで円環状部品の鼓状の変形を生じ難くすることができ、エンジンの作動の際における円環状部品に負荷されるストレスが円環状部品の長手方向に分散し、前記のような中央部への応力の集中による破損を防止することができる。   The connecting rod assembly having this configuration is used, for example, as a drive transmission means from a piston to a crankshaft in an engine. Specifically, a small end portion is fitted and coupled to a piston pin of a piston through an annular part press-fitted into the fitting hole, and a large end portion is press-fitted into the fitting hole. It is fitted and coupled to the crank pin of the crank through an annular part so as to be relatively rotatable. Thus, it is used as drive transmission means for converting and transmitting the reciprocating motion of the piston into the axial rotational motion of the crankshaft. In this case, the thickness of the central portion of the stacked body, that is, the number of stacked layers, is set so that the center portion of the stacked body can pass through the interval between the pair of balance weights during the drive transmission motion. On the other hand, since the large end portion and the small end portion are not restricted by the distance between the balance weights, the number of laminated layers is increased from the central portion, and the wall thickness of the large end portion and the small end portion is set to the central portion of the laminated body. It can be thicker than the wall thickness. Therefore, the amount of protrusion on both sides of the laminated body of the annular part that is press-fitted into the fitting holes in the large end part and the small end part is reduced, so that the fitting of the annular part to the laminated body is thick. Since the fitting width is widened, it is possible to make it difficult for the drum-shaped deformation of the annular part to occur, and the stress applied to the annular part during engine operation is in the longitudinal direction of the annular part. It is possible to disperse and prevent breakage due to the concentration of stress on the central portion as described above.

第２の発明のコンロッドアセンブリは、プレス加工された板状の積層部品を積層してなる積層体、およびこの積層体に設けられた大端部分および小端部分の嵌合孔にそれぞれ圧入された一対の円環状部品を有するコンロッドアセンブリにおいて、前記積層体の前記大端部分および小端部分のいずれか一方の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くし、この積層枚数を多くした部分の肉厚を前記積層体中央部の肉厚よりも厚くしたことを特徴とする。   The connecting rod assembly of the second invention is press-fitted into a laminate formed by laminating pressed plate-like laminated parts, and a fitting hole in a large end portion and a small end portion provided in the laminate. In a connecting rod assembly having a pair of annular parts, the number of stacked layers of either the large end portion or the small end portion of the stacked body is set to the number of stacked layers in the central portion of the stacked body between the large end portion and the small end portion. The thickness of the portion where the number of laminated layers is increased is made thicker than the thickness of the central portion of the laminated body.

この構成のコンロッドアセンブリは、上記同様、エンジンの駆動伝達手段として用いられる。この場合、積層体中央部がバランスウエイト同士の間隔を通過し得るように、その肉厚、すなわち積層枚数の設定がなされる。また、積層体の大端部分および小端部分のうち、負荷されるストレスが大きい方の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くしてその肉厚を積層体中央部の肉厚より厚くすることができる。これにより、大端部分および小端部分のうちの負荷されるストレスが大きい方では、その嵌合孔に圧入される円環状部品の積層体の両側への出っ張り量が少なくなり、円環状部品の鼓状の変形が防止され、これによって、上記同様エンジンの作動の際における円環状部品に負荷されるストレスが円環状部品の長手方向に分散し、前記のような中央部への応力の集中による破損を生じ難くすることができる。   The connecting rod assembly having this configuration is used as drive transmission means for the engine as described above. In this case, the thickness, that is, the number of stacked layers is set so that the central portion of the stacked body can pass through the interval between the balance weights. Further, among the large end portion and the small end portion of the laminate, the number of laminates with the larger stress applied is made larger than the number of laminates in the central portion of the laminate between the large end portion and the small end portion. The thickness can be made thicker than the thickness of the central portion of the laminate. As a result, in the larger end portion and the smaller end portion where the stress to be applied is larger, the amount of protrusion on both sides of the laminated body of the annular component press-fitted into the fitting hole is reduced, and the annular component The drum-like deformation is prevented, and as a result, the stress applied to the annular part during engine operation is dispersed in the longitudinal direction of the annular part as described above, and due to the concentration of stress in the central part as described above. Damage can be made difficult to occur.

これら第１，第２の発明において、前記円環状部品をシェル型軸受の外輪としたり、あるいは、円環状部品をソリッド円管としてこのソリッド円管内に保持器付き針状ころを配したり、さらには、円環状部品を滑り軸受となるドライメタルとしても良い。円環状部品をこのように構成することにより、円環状部品に嵌合結合されるクランクピンやピストンピンとの相対回転が円滑になされる。   In these first and second inventions, the annular part is an outer ring of a shell-type bearing, or the annular part is a solid circular pipe and needle rollers with cages are arranged in the solid circular pipe. The ring-shaped part may be a dry metal that becomes a sliding bearing. By configuring the annular part in this manner, relative rotation with the crank pin and the piston pin fitted and coupled to the annular part is smoothly performed.

また、これら第１，第２の発明において、積層方向に対して最も外側となる積層部品と、その内側の積層部品とに、両積層部品を相互に結合する結合用突起および凹部を設けても良い。このような結合用突起および凹部を設けることにより、最も外側の積層部品と、その内側の積層部品とが強固な積層状態に維持される。特に、積層部品の積層枚数を多くした部分では、負荷されるストレスが大きいから、このような強固な積層状態の維持によって、上記鼓状の変形をより生じ難くすることができる。   In these first and second inventions, the outermost laminated component in the laminating direction and the inner laminated component may be provided with coupling protrusions and recesses that mutually couple the laminated components. good. By providing such coupling protrusions and recesses, the outermost laminated component and the inner laminated component are maintained in a strong laminated state. In particular, since the stress applied is large at the portion where the number of laminated parts is increased, the above-mentioned drum-like deformation can be made less likely to occur by maintaining such a strong laminated state.

第１の発明のコンロッドアセンブリは、プレス加工された板状の積層部品を積層してなる積層体、およびこの積層体に設けられた大端部分および小端部分の嵌合孔にそれぞれ圧入された一対の円環状部品を有するコンロッドアセンブリにおいて、前記積層体の前記大端部分および小端部分の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くし、前記大端部分と小端部分の肉厚を前記積層体中央部の肉厚よりも厚くしたため、エンジンのピストンの往復運動をクランクシャフトの軸回転運動に変換伝達するための手段に用いた場合、バランスウエイト同士の狭い間隔も積層体中央部が通過し、円滑な駆動伝達運動がなされると共に、クランクピンやピストンピンに嵌合結合される円環状部品の変形が生じ難く、エンジンの作動に支障を来たすこともない。   The connecting rod assembly according to the first aspect of the present invention is press-fitted into a laminate formed by laminating pressed plate-like laminated parts, and a fitting hole in a large end portion and a small end portion provided in the laminate. In a connecting rod assembly having a pair of annular parts, the number of stacked layers of the large end portion and the small end portion of the stacked body is made larger than the number of stacked layers in the central portion of the stacked body between the large end portion and the small end portion. When the thickness of the large end portion and the small end portion is made thicker than the thickness of the central portion of the laminate, the reciprocating motion of the engine piston is used as a means for converting and transmitting the shaft shaft rotational motion. In addition, the center portion of the laminate passes through a narrow interval between the balance weights, and smooth drive transmission movement is made, and deformation of the annular part that is fitted and coupled to the crank pin and the piston pin is difficult to occur. Nor interfere with the operation of the engine.

第２の発明のコンロッドアセンブリは、プレス加工された板状の積層部品を積層してなる積層体、およびこの積層体に設けられた大端部分および小端部分の嵌合孔にそれぞれ圧入された一対の円環状部品を有するコンロッドアセンブリにおいて、前記積層体の前記大端部分および小端部分のいずれか一方の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くし、この積層枚数を多くした部分の肉厚を前記積層体中央部の肉厚よりも厚くしたため、上記同様エンジンにおけるピストンからクランクシャフトへの駆動伝達手段として用いた場合、上記と同様に円滑な駆動伝達運動がなされると共に、負荷されるストレスが大きい部分の肉厚を厚くすることにより、この部分の嵌合孔に圧入される円環状部品の変形を生じ難くすることができる。   The connecting rod assembly of the second invention is press-fitted into a laminate formed by laminating pressed plate-like laminated parts, and a fitting hole in a large end portion and a small end portion provided in the laminate. In a connecting rod assembly having a pair of annular parts, the number of stacked layers of either the large end portion or the small end portion of the stacked body is set to the number of stacked layers in the central portion of the stacked body between the large end portion and the small end portion. Since the thickness of the portion where the number of laminated layers is increased is made thicker than the thickness of the central portion of the laminated body, the same as above when used as a drive transmission means from the piston to the crankshaft in the engine In addition to smooth drive transmission movement, the thickness of the part where the stress to be applied is large is increased, so that the annular part press-fitted into the fitting hole of this part is deformed. Flip can be difficult.

第１の発明のコンロッドアセンブリの一実施形態を図１と共に説明する。このコンロッドアセンブリ１は、複数のプレス加工された鋼板等の板状の積層部品を積層してなる積層体２と、この積層体２の大端部分２ａおよび小端部分２ｂの嵌合孔２ａａ，２ｂａに圧入された一対の円環状部品３，４とよりなる。積層部品は、中央部（すなわちロッド部分）２ｃを介し大端部分２ａおよび小端部分２ｂに渡り全体形状を形成する２枚の積層部品２Ａ，２Ｂと、積層部品２Ａ，２Ｂにおける大端部分２ａの両側に積層される積層部品２Ｃ，２Ｄと、同小端部分２ｂの両側に積層される積層部品２Ｅ，２Ｆとよりなる。すなわち、積層体２は、大端部分２ａ、小端部分２ｂおよび中央部２ｃを有し、積層部品の積層枚数を、大端部分２ａでは積層部品２Ａ〜２Ｄの４枚重ね、小端部分２ｂでは積層部品２Ａ，２Ｂ，２Ｅ，２Ｆの４枚重ね、中央部２ｃでは積層部品２Ａ，２Ｂの２枚重ねとし、大端部分２ａおよび小端部分２ｂの肉厚を中央部２ｃの肉厚より厚くしている。これら積層部品２Ａ〜２Ｆの積層一体化は、各嵌合孔２ａａ，２ｂａに円環状部品３，４を圧入することによってなされるが、各積層部品２Ａ〜２Ｆ間を溶接（例えばレーザ溶接）等によって固着しても良い。   An embodiment of the connecting rod assembly of the first invention will be described with reference to FIG. The connecting rod assembly 1 includes a laminated body 2 formed by laminating a plurality of plate-like laminated parts such as pressed steel plates, and fitting holes 2aa of the large end portion 2a and the small end portion 2b of the laminated body 2. It consists of a pair of annular parts 3 and 4 press-fitted into 2ba. The laminated component includes two laminated components 2A and 2B that form an overall shape across the large end portion 2a and the small end portion 2b via the central portion (that is, the rod portion) 2c, and the large end portion 2a in the laminated components 2A and 2B. The laminated parts 2C and 2D are laminated on both sides of the same, and the laminated parts 2E and 2F are laminated on both sides of the small end portion 2b. That is, the laminated body 2 has a large end portion 2a, a small end portion 2b, and a central portion 2c, and the number of laminated components is set to 4 pieces of the laminated components 2A to 2D in the large end portion 2a, and the small end portion 2b. In the center part 2c, the laminated parts 2A, 2B, 2E, and 2F are overlapped, and in the central part 2c, the laminated parts 2A and 2B are overlapped. It is thick. These laminated parts 2A to 2F are laminated and integrated by press-fitting the annular parts 3 and 4 into the respective fitting holes 2aa and 2ba, but welding (for example, laser welding) between the laminated parts 2A to 2F, etc. It may be fixed by.

図２に示す実施形態は、図１の実施形態に対して、大端部分２ａおよび小端部分２ｂに積層される積層部品２Ｃ〜２Ｆの形状が異なる。すなわち、前者の積層部品２Ｃ〜２Ｆが、嵌合孔２ａａ，２ｂａと同心の円環状であるのに対し、後者の積層部品２Ｃ〜２Ｆは、それぞれが円環状の一周縁部より中央部２ｃ側に延びる突片状の延長部２Ｃａ，２Ｄａ，２Ｅａ，２Ｆａを有している点で異なる。これらは使用される部位に求められる強度等に応じて適宜選択採用されるものであるが、延長部２Ｃａ，２Ｄａ，２Ｅａ，２Ｆａの長さは、後述するクランクのバランスウエイトに干渉しない範囲に設定される。   The embodiment shown in FIG. 2 differs from the embodiment of FIG. 1 in the shapes of the laminated components 2C to 2F laminated on the large end portion 2a and the small end portion 2b. That is, the former laminated parts 2C to 2F are annular concentric with the fitting holes 2aa and 2ba, whereas the latter laminated parts 2C to 2F are respectively arranged on the center part 2c side from one peripheral edge of the annular shape. It differs in that it has projecting piece-like extensions 2Ca, 2Da, 2Ea, 2Fa extending in the direction. These are appropriately selected and adopted according to the strength required for the part to be used, but the lengths of the extensions 2Ca, 2Da, 2Ea, 2Fa are set within a range that does not interfere with the balance weight of the crank described later. Is done.

図１，図２の各実施形態において、前記円環状部品３，４としては、図３（Ａ）（Ｂ）（Ｃ）に示すような３種のものが望ましく用いられる。図３はいずれも小端部分２ｂを示しており、大端部分１ａには、図示を省略するが、それぞれに対応した同様のものが圧入されているものとする。図３（Ａ）の円環状部品４は、シェル型軸受の外輪４Ａである例を示し、図３（Ｂ）の円環状部品４はソリッド円管４Ｂであり、このソリッド円管４Ｂ内に保持器付き針状ころ６を配した例を示し、また図３（Ｃ）の円環状部品４は滑り軸受となるドライメタル４Ｃである例を示している。図３（Ａ）のシェル型軸受の外輪４Ａは、その内径面からなる転走面に沿って転走する複数のころ５を有し、各ころ５はリング状の保持器５ａに保持されている。シェル型軸受の外輪４Ａは、鋼板のプレス成形品等からなり、両側に鍔４Ａａを有している。なお、鍔を有していないスレート形状のプレス成形品でもよい。図３（Ｂ）に示すソリッド円管４Ｂにおける針状ころ６は、保持器６ａと組合せて互いに外れないように組立てられたものである。図３（Ｃ）のドライメタル４Ｃは、その内面が滑性を備え、それ自体が滑り軸受となるものである。これら円環状部品４Ａ，４Ｂ，４Ｃは、いずれも、４枚の積層部品２Ａ，２Ｂ、２Ｅ，２Ｆを積層してなる積層体小端部分２ｂに形成された嵌合孔２ｂａに圧入一体とされ、この圧入状態では、図８（Ｂ）の従来例に比べて積層体２の両側に出っ張る部分が小さくなる。   In each of the embodiments shown in FIGS. 1 and 2, as the annular parts 3 and 4, three types as shown in FIGS. 3A, 3B and 3C are desirably used. FIG. 3 shows the small end portion 2b, and the large end portion 1a is not shown in the figure, but the same corresponding parts are press-fitted. An annular part 4 in FIG. 3 (A) shows an example of an outer ring 4A of a shell type bearing, and the annular part 4 in FIG. 3 (B) is a solid circular pipe 4B and is held in this solid circular pipe 4B. An example in which a needle roller 6 with a vessel is arranged is shown, and an example in which the annular part 4 in FIG. 3C is a dry metal 4C serving as a sliding bearing is shown. The outer ring 4A of the shell-type bearing of FIG. 3A has a plurality of rollers 5 that roll along a rolling surface that is an inner diameter surface, and each roller 5 is held by a ring-shaped cage 5a. Yes. The outer ring 4A of the shell type bearing is made of a press-formed product of a steel plate or the like, and has flanges 4Aa on both sides. Note that a slate-shaped press-molded product having no ridges may be used. The needle rollers 6 in the solid circular tube 4B shown in FIG. 3B are assembled so as not to be separated from each other in combination with the cage 6a. The inner surface of the dry metal 4C shown in FIG. 3 (C) has a slipperiness, and itself becomes a slide bearing. These annular parts 4A, 4B, 4C are all press-fitted into a fitting hole 2ba formed in a small end portion 2b of a laminated body formed by laminating four laminated parts 2A, 2B, 2E, 2F. In this press-fitted state, portions protruding on both sides of the laminate 2 are smaller than in the conventional example of FIG.

図４は上記のような構成の積層コンロッドアセンブリ１をエンジンに組付けた状態を概念的に示す。この積層コンロッドアセンブリ１における大端部分２ａは、円環状部品３を介しクランク本体５０のクランクピン５１にその軸心周りに相対回転可能に嵌合結合され、また小端部分２ｂは、円環状部品４を介しピストン６０のピストンピン６１にその軸心周りに相対回転可能に嵌合結合されている。クランクピン５１は、クランクシャフト５２に対し、一対のアーム５３間に偏心状態で固定され、この両アーム５３のクランクピン５１とは反対部分にはバランスウエイト５３ａが形成されている。   FIG. 4 conceptually shows a state where the laminated connecting rod assembly 1 configured as described above is assembled to an engine. The large end portion 2a of the laminated connecting rod assembly 1 is fitted and coupled to the crankpin 51 of the crank body 50 via an annular part 3 so as to be relatively rotatable about its axis, and the small end part 2b is an annular part. 4 is fitted and coupled to the piston pin 61 of the piston 60 so as to be relatively rotatable about its axis. The crankpin 51 is fixed in an eccentric state between the pair of arms 53 with respect to the crankshaft 52, and a balance weight 53a is formed at a portion of the both arms 53 opposite to the crankpin 51.

上記一対のバランスウエイト５３ａは、その構成上、対向部の間隔ｄが小さく形成される。そのため、図示のように積層体２の中央部２ｃは２枚の積層部品２Ａ、２Ｂのみで構成してその厚みを間隔ｄより小さくしている。これにより、ピストン６０の上下往復運動を、クランクピン５１および一対のアーム５３を介しクランクシャフト５２の軸回転運動に変換駆動伝達する際、コンロッドアセンブリ１の上記積層体中央部２ｃが、バランスウエイト５３ａに干渉することなくその間を通過して、この変換駆動伝達が円滑になされる。一方、大端部分２ａおよび小端部分２ｂでは、それぞれ４枚の積層部品２Ａ〜２Ｄおよび２Ａ，２Ｂ，２Ｅ，２Ｆを積層一体とし、この部分の肉厚を中央部２ｃの肉厚よりも厚くしている。そのため、大端部分２ａおよび小端部分２ｂの嵌合孔２ａａ，２ｂａに圧入された円環状部品３，４の積層体２の両側に出っ張る部分が小さく、円環状部品３，４と積層体２との嵌め合い幅が大きくなる。嵌め合いが大きくなることで、図８（Ｂ）に示すような鼓状の変形が生じ難くなり、エンジンの作動が継続されても、円環状部品３，４に負荷されるストレスがその長手方向に分散し、円環状部品３，４の長手方向中央部への応力の集中による破損が生じ難くなり、これにより、エンジンの作動に支障を来たすような懸念も生じない。   The pair of balance weights 53a is formed so that the distance d between the opposed portions is small due to its configuration. Therefore, as shown in the figure, the central portion 2c of the laminated body 2 is composed of only two laminated components 2A and 2B, and the thickness thereof is smaller than the distance d. As a result, when the vertical reciprocating motion of the piston 60 is converted and transmitted to the axial rotational motion of the crankshaft 52 via the crankpin 51 and the pair of arms 53, the laminate central portion 2c of the connecting rod assembly 1 receives the balance weight 53a. This conversion drive transmission is made smooth by passing between them without interference. On the other hand, in the large end portion 2a and the small end portion 2b, the four laminated components 2A to 2D and 2A, 2B, 2E, and 2F are integrally laminated, and the thickness of this portion is thicker than the thickness of the central portion 2c. is doing. Therefore, the protruding parts on both sides of the laminate 2 of the annular parts 3 and 4 press-fitted into the fitting holes 2aa and 2ba of the large end part 2a and the small end part 2b are small, and the annular parts 3 and 4 and the laminate 2 are small. The fitting width becomes larger. By increasing the fit, the drum-shaped deformation as shown in FIG. 8B is less likely to occur, and even when the engine continues, the stress applied to the annular parts 3 and 4 is in the longitudinal direction. It is difficult to cause breakage due to the concentration of stress on the center part in the longitudinal direction of the annular parts 3 and 4, thereby preventing the possibility of hindering the operation of the engine.

図５（Ａ）（Ｂ）および図６（Ａ）（Ｂ）は、この発明の別の実施形態を示す。この実施形態は、積層方向に対して最も外側となる積層部品と、その内側の積層部品とに、両積層部品を相互に結合する結合用突起および凹部を設けたものである。図５（Ａ）（Ｂ）は図１（Ａ）（Ｂ）のコンロッドアセンブリ１に、図６（Ａ）（Ｂ）は図２（Ａ）（Ｂ）のコンロッドアセンブリ１に、この結合用突起および凹部による結合手段をそれぞれ適用したものであることを示している。   FIGS. 5A and 5B and FIGS. 6A and 6B show another embodiment of the present invention. In this embodiment, a laminated part which is the outermost side in the laminating direction and a laminated part inside the laminated part are provided with coupling protrusions and recesses that mutually couple the laminated parts. 5A and 5B are connected to the connecting rod assembly 1 shown in FIGS. 1A and 1B, and FIGS. 6A and 6B are connected to the connecting rod assembly 1 shown in FIGS. 2A and 2B. It is shown that the coupling means using the concave portions and the concave portions are respectively applied.

図５（Ａ）（Ｂ）のコンロッドアセンブリ１においては、大端部分２ａの最も外側の積層部品２Ｃ，２Ｄの各両面に同寸・同形状の突起７および凹部８が形成され、その内側の積層部品２Ａ，２Ｂには、同位置で同寸・同形状の突起９および凹部１０が各両面に形成されている。また、小端部分２ｂの最も外側の積層部品２Ｄ，２Ｅの各両面に同寸・同形状の突起７および凹部８が形成され、またその内側の積層部品２Ａ，２Ｂには、同位置で同寸・同形状の突起９および凹部１０が各両面に形成されている。大端部分２ａおよび小端部分２ｂのこれら突起７，９および凹部８，１０は、コンロッドアセンブリ１の長手方向中心線に沿って各２箇所に設けられ、拡大図に示すような噛み合い嵌合関係で結合している。さらに、積層体中央部２ｃの積層部品２Ａ，２Ｂには、各両面の同位置に同寸・同形状の突起１１および凹部１２が形成され、積層部品２Ａ，２Ｂが同様の噛み合い嵌合関係で結合している。   In the connecting rod assembly 1 shown in FIGS. 5A and 5B, projections 7 and recesses 8 having the same size and shape are formed on both surfaces of the outermost laminated parts 2C and 2D of the large end portion 2a. In the laminated parts 2A and 2B, a projection 9 and a recess 10 having the same size and shape at the same position are formed on both surfaces. Also, projections 7 and recesses 8 of the same size and shape are formed on both surfaces of the outermost laminated parts 2D and 2E of the small end portion 2b, and the inner laminated parts 2A and 2B are the same at the same position. A projection 9 and a recess 10 having the same size and shape are formed on each side. The protrusions 7 and 9 and the recesses 8 and 10 of the large end portion 2a and the small end portion 2b are provided at two locations along the longitudinal center line of the connecting rod assembly 1, and are engaged and engaged as shown in the enlarged view. Are combined. Further, the laminated parts 2A and 2B of the laminated body central portion 2c are formed with the same size and shape of the protrusions 11 and the recessed parts 12 at the same positions on both sides, and the laminated parts 2A and 2B have the same meshing fitting relationship. Are connected.

上記突起７，９，１１は、ハーフ抜き加工と呼ばれる穴明けを途中深さまで行う加工、またはダボ出し等と呼ばれる形成加工等で形成されるものである。これら突起７，９，１１は、裏面が凹部８，１０，１２となり、かつその凹部深さが板厚よりも浅くなるように形成される。これらの平面形状は円形に限らず、他の形状であっても良い。また、個数、位置は任意でよいとする。また、積層部品２Ｄ，２Ｆ，２Ｂに形成される突起７，９，１１をなくし、凹部８，１０，１２を貫通孔によるものとしても良い。   The protrusions 7, 9, and 11 are formed by a process called a half punching process that is performed to a halfway depth, or a forming process called doweling or the like. These protrusions 7, 9, and 11 are formed such that the back surfaces thereof are recessed portions 8, 10, and 12, and the recessed portion depth is shallower than the plate thickness. These planar shapes are not limited to a circle but may be other shapes. The number and position may be arbitrary. Further, the protrusions 7, 9, and 11 formed on the laminated components 2D, 2F, and 2B may be eliminated, and the recesses 8, 10, and 12 may be formed by through holes.

このような突起および凹部による結合手段を採用したコンロッドアセンブリ１は、突起７，９，１１および凹部８，１０，１２の噛み合い嵌合関係によって上記積層部品２Ａ〜２Ｆのそれぞれ隣合う部品同士が結合され、積層一体とされるから、簡単でかつ安価に製造することができ、しかも、積層部品２Ａ〜２Ｆの相互の結合が堅固になされてばらける懸念がなく、曲げ強度および座屈強度の向上も図られる。また、大端部分２ａおよび小端部分２ｂの嵌合孔２ａａ，２ｂａに円環状部品３，４が圧入されるから、この圧入と、上記突起７，９，１１および凹部８，１０，１２の噛み合い嵌合関係の結合との相乗効果により、積層部品２Ａ〜２Ｆの相互の結合がより堅固になされる。この場合、突起７，９，１１および凹部８，１０，１２により積層体２が一体に結合した状態で円環状部品３，４の圧入を行うことができるから、円環状部品３，４の圧入の作業性が良く、コンロッドアセンブリ１の組立時間が短縮される。   In the connecting rod assembly 1 that employs the coupling means using the projections and the recesses, the adjacent components of the laminated components 2A to 2F are coupled to each other due to the meshing and fitting relationship between the projections 7, 9, and 11 and the recesses 8, 10, and 12. In addition, since the laminates are integrated, they can be manufactured easily and inexpensively, and there is no concern that the laminated parts 2A to 2F are firmly connected to each other, and the bending strength and the buckling strength are improved. Is also planned. Further, since the annular parts 3 and 4 are press-fitted into the fitting holes 2aa and 2ba of the large end portion 2a and the small end portion 2b, the press-fitting and the projections 7, 9, 11 and the recesses 8, 10, 12 are Due to the synergistic effect with the coupling of the meshing fitting relation, the mutual coupling of the laminated parts 2A to 2F is made stronger. In this case, the annular parts 3 and 4 can be press-fitted in a state where the laminate 2 is integrally coupled by the projections 7, 9 and 11 and the recesses 8, 10 and 12. The workability of the connecting rod assembly 1 is shortened.

図６（Ａ）（Ｂ）のコンロッドアセンブリ１においては、積層体中央部２ｃの積層部品２Ａ，２Ｂには、上記のような突起および凹部による結合手段を形成せず、積層方向に対して最も外側となる積層部品２Ｃ〜２Ｆにおける円環状部と、その一周縁部より中央部２ｃ側に延びる鍔状の延長部２Ｃａ，２Ｄａ，２Ｅａ，２Ｆａとに、各両面に上記と同様に同寸・同形状の突起７および凹部８を形成し、その内側の積層部品２Ａ，２Ｂには、同位置で同寸・同形状の突起９および凹部１０を各両面に形成している。この場合も、突起７，９および凹部８，１０のそれぞれの噛み合い嵌合関係の結合により、上記と同様、積層部品２Ａ〜２Ｆが堅固に積層一体とされた積層体２が得られる。   In the connecting rod assembly 1 shown in FIGS. 6 (A) and 6 (B), the laminated parts 2A and 2B of the laminated body central portion 2c are not formed with the coupling means by the protrusions and the concave portions as described above, and are the most in the lamination direction. In the same manner as above, the annular part of the laminated parts 2C to 2F on the outer side and the hook-like extension parts 2Ca, 2Da, 2Ea, 2Fa extending from the one peripheral edge to the center part 2c side are the same as above. Protrusions 7 and recesses 8 having the same shape are formed, and protrusions 9 and recesses 10 having the same size and shape at the same position are formed on both surfaces of the laminated components 2A and 2B inside thereof. Also in this case, the laminated body 2 in which the laminated components 2A to 2F are firmly laminated and integrated is obtained by the coupling of the protrusions 7 and 9 and the recesses 8 and 10 in the meshing engagement relation.

図７（Ａ）（Ｂ）（Ｃ）（Ｄ）は、第２の発明の実施形態を示す。この実施形態は、積層体２の大端部分２ａおよび小端部分２ｂのいずれか一方の積層枚数を、これら大端部分２ａと小端部分２ｂの間の積層体中央部２ｃの積層枚数よりも多くし、この積層枚数を多くした部分の肉厚を積層体中央部２ｃの肉厚よりも厚くしたものである。図７（Ａ）（Ｂ）のコンロッドアセンブリ１における積層体２では、大端部分２ａを積層部品２Ａ〜２Ｄの４枚重ねとし、小端部分２ｂおよび中央部２ｃを積層部品２Ａ，２Ｂの２枚重ねとし、大端部分２ａの肉厚を小端部分２ｂおよび中央部２ｃの肉厚より厚くしている。また、図７（Ｃ）（Ｄ）のコンロッドアセンブリ１における積層体２では、小端部分２ｂを積層部品２Ａ，２Ｂ，２Ｅ，２Ｆの４枚重ねとし、大端部分２ａおよび中央部２ｃを積層部品２Ａ，２Ｂの２枚重ねとし、小端部分２ｂの肉厚を大端部分２ａおよび中央部２ｃの肉厚より厚くしている。   7A, 7B, 7C, and 7D show an embodiment of the second invention. In this embodiment, the number of stacked layers of either the large end portion 2a or the small end portion 2b of the stacked body 2 is set to be larger than the stacked number of the stacked body central portion 2c between the large end portion 2a and the small end portion 2b. The thickness of the portion where the number of stacked layers is increased is made thicker than the thickness of the central portion 2c of the stacked body. In the laminated body 2 in the connecting rod assembly 1 shown in FIGS. 7A and 7B, the large end portion 2a is composed of four laminated components 2A to 2D, and the small end portion 2b and the central portion 2c are two laminated components 2A and 2B. The large end portion 2a is thicker than the small end portion 2b and the central portion 2c. Further, in the laminated body 2 in the connecting rod assembly 1 of FIGS. 7C and 7D, the small end portion 2b is made up of four laminated parts 2A, 2B, 2E, and 2F, and the large end portion 2a and the central portion 2c are laminated. Two parts 2A and 2B are overlapped, and the thickness of the small end portion 2b is larger than the thickness of the large end portion 2a and the central portion 2c.

図７（Ａ）（Ｂ）における外側の積層部品２Ｃ，２Ｄおよび同（Ｃ）（Ｄ）における外側の積層部品２Ｅ，２Ｆは、図２に示す例と同様に、それぞれが円環状の一周縁部より中央部２ｃ側に延びる鍔状の延長部２Ｃａ，２Ｄａ，２Ｅａ，２Ｆａを有しているが、図１の例のような円環状部のみで構成されるものであっても良い。   The outer laminated components 2C and 2D in FIGS. 7A and 7B and the outer laminated components 2E and 2F in FIGS. Although it has the bowl-shaped extension part 2Ca, 2Da, 2Ea, 2Fa extended to the center part 2c side from a part, it may be comprised only by an annular | circular shaped part like the example of FIG.

この実施形態のコンロッドアセンブリ１も、大端部分２ａおよび小端部分２ｂの嵌合孔２ａａ，２ｂａに、図３に示すいずれかの円環状部品３，４が圧入されている。そして図４に示すようなエンジンのクランクピン５１およびピストンピン６１のそれぞれに円環状部品３，４が嵌合結合され、ピストン６０の往復運動をクランクシャフト５２の軸回転運動に変換駆動伝達する手段として用いられる。したがって、この変換駆動伝達の際、コンロッドアセンブリ１の肉厚の薄い積層体中央部２ｃが、バランスウエイト５３ａに干渉することなくその間を通過して、この変換駆動伝達が円滑になされる。また、大端部分２ａおよび小端部分２ｂのいずれか一方は、積層体中央部２ｃより肉厚を厚くしているから、この厚くした部分に圧入された円環状部品３または４の積層体２の両側に出っ張る部分が小さく、その嵌め合い幅が大きくなり、エンジンの作動が継続されても、円環状部品３または４に負荷されるストレスがその長手方向に分散し、円環状部品３または４の長手方向中央部への応力の集中による鼓状の変形が生じ難くなり、これにより、エンジンの作動に支障を来たすような懸念も生じない。   In the connecting rod assembly 1 of this embodiment, one of the annular parts 3 and 4 shown in FIG. 3 is press-fitted into the fitting holes 2aa and 2ba of the large end portion 2a and the small end portion 2b. Then, the annular parts 3 and 4 are fitted and coupled to the crank pin 51 and the piston pin 61 of the engine as shown in FIG. 4 so that the reciprocating motion of the piston 60 is converted and transmitted to the axial rotational motion of the crankshaft 52. Used as Therefore, at the time of this conversion drive transmission, the thin laminated body central portion 2c of the connecting rod assembly 1 passes between them without interfering with the balance weight 53a, and this conversion drive transmission is made smoothly. Further, since either one of the large end portion 2a and the small end portion 2b is thicker than the laminate central portion 2c, the laminate 2 of the annular parts 3 or 4 press-fitted into the thickened portion. Even if the engine continues, the stress applied to the annular part 3 or 4 is dispersed in the longitudinal direction of the annular part 3 or 4. The drum-like deformation due to the concentration of the stress in the central portion in the longitudinal direction is less likely to occur, so that there is no concern that the operation of the engine will be hindered.

この実施形態において、大端部分２ａおよび小端部分２ｂのいずれの肉厚を厚くするかの設定は、クランク側およびピストン側のいずれに負荷されるストレスが大きいかによってなされる。また、図５あるいは図６に示すような突起および凹部の噛み合い嵌合関係による積層部品の結合手段を、この実施形態にも適用することはもとより可能である。   In this embodiment, the setting of which of the large end portion 2a and the small end portion 2b is made thicker depends on whether the stress applied to the crank side or the piston side is large. In addition, it is possible to apply the coupling means for the laminated parts by the engagement fitting relationship between the protrusions and the recesses as shown in FIG. 5 or 6 to this embodiment.

なお、上記各実施形態では、積層体２の中央部２ｃでは積層部品の２枚重ね、大端部分２ａ，小端部分２ｂでは同４枚重ねとしたが、適用されるエンジンの仕様に応じてこれらの積層枚数を適宜変更することができる。   In each of the above embodiments, two laminated parts are stacked in the central portion 2c of the stacked body 2 and four are stacked in the large end portion 2a and the small end portion 2b. However, according to the specifications of the engine to be applied. The number of stacked layers can be changed as appropriate.

（Ａ），（Ｂ）はそれぞれ第１の発明の一実施形態にかかるコンロッドアセンブリの正面図および断面図である。(A), (B) is the front view and sectional drawing of the connecting rod assembly concerning one Embodiment of 1st invention, respectively. （Ａ），（Ｂ）はそれぞれ同コンロッドアセンブリの変形例の正面図および断面図である。(A), (B) is the front view and sectional drawing of the modification of the same connecting rod assembly, respectively. （Ａ），（Ｂ），（Ｃ）はそれぞれ同コンロッドアセンブリの部分拡大断面図であって、その各種変形態様を示す。(A), (B), (C) is a partial expanded sectional view of the same connecting rod assembly, and shows various modifications thereof. 同コンロッドアセンブリの使用例を示す概念的断面図である。It is a conceptual sectional view showing an example of use of the connecting rod assembly. （Ａ），（Ｂ）はそれぞれこの発明のさらに他の実施形態にかかるコンロッドアセンブリの正面図および断面図である。(A), (B) is the front view and sectional drawing of the connecting rod assembly concerning further another embodiment of this invention, respectively. （Ａ），（Ｂ）はそれぞれ同コンロッドアセンブリの変形例の正面図および断面図である。(A), (B) is the front view and sectional drawing of the modification of the same connecting rod assembly, respectively. （Ａ），（Ｂ）はそれぞれ第２の発明の一実施形態にかかるコンロッドアセンブリの正面図および断面図であり、（Ｃ），（Ｄ）はそれぞれ同コンロッドアセンブリの別の実施形態の正面図および断面図である。(A), (B) is the front view and sectional drawing of the connecting rod assembly which concern on one Embodiment of 2nd invention, respectively, (C), (D) is the front view of another embodiment of the same connecting rod assembly, respectively. And FIG. （Ａ）は従来のコンロッドアセンブリの使用例を示す概念的断面図であり、（Ｂ）はこの使用状態で発生する現象を示す部分拡大図である。(A) is a conceptual sectional view showing a usage example of a conventional connecting rod assembly, and (B) is a partially enlarged view showing a phenomenon that occurs in this usage state.

符号の説明Explanation of symbols

１…コンロッドアセンブリ
２…積層体
２ａ…大端部分
２ａａ…嵌合孔
２ｂ…小端部分
２ｂａ…嵌合孔
２ｃ…積層体中央部
２Ａ〜２Ｆ…積層部品
３，４…円環状部品
４Ａ…シェル型軸受の外輪（円環状部品）
４Ｂ…ソリッド円管（円環状部品）
４Ｃ…ドライメタル（円環状部品）
５…ころ
６…保持器つき針状ころ
７，９…突起
８，１０…凹部
DESCRIPTION OF SYMBOLS 1 ... Connecting rod assembly 2 ... Laminated body 2a ... Large end part 2aa ... Fitting hole 2b ... Small end part 2ba ... Fitting hole 2c ... Laminated body center part 2A-2F ... Laminated parts 3, 4 ... Ring-shaped part 4A ... Shell Type outer ring (annular part)
4B ... Solid pipe (annular part)
4C ... Dry metal (annular parts)
5 ... Roller 6 ... Needle roller with retainer 7, 9 ... Projection 8, 10 ... Recess

Claims (6)

プレス加工された板状の積層部品を積層してなる積層体、およびこの積層体に設けられた大端部分および小端部分の嵌合孔にそれぞれ圧入された一対の円環状部品を有するコンロッドアセンブリにおいて、
前記積層体の前記大端部分および小端部分の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くし、前記大端部分と小端部分の肉厚を前記積層体中央部の肉厚よりも厚くしたことを特徴とするコンロッドアセンブリ。 A laminated body formed by laminating pressed plate-like laminated parts, and a connecting rod assembly having a pair of annular parts press-fitted into fitting holes in a large end portion and a small end portion provided in the laminated body In
The number of layers of the large end portion and the small end portion of the laminate is larger than the number of layers in the center of the laminate between the large end portion and the small end portion, and the meat of the large end portion and the small end portion is increased. A connecting rod assembly having a thickness greater than a thickness of a central portion of the laminate. プレス加工された板状の積層部品を積層してなる積層体、およびこの積層体に設けられた大端部分および小端部分の嵌合孔にそれぞれ圧入された一対の円環状部品を有するコンロッドアセンブリにおいて、
前記積層体の前記大端部分および小端部分のいずれか一方の積層枚数を、これら大端部分と小端部分の間の積層体中央部の積層枚数よりも多くし、この積層枚数を多くした部分の肉厚を前記積層体中央部の肉厚よりも厚くしたことを特徴とするコンロッドアセンブリ。 A laminated body formed by laminating pressed plate-like laminated parts, and a connecting rod assembly having a pair of annular parts press-fitted into fitting holes in a large end portion and a small end portion provided in the laminated body In
The number of stacked one of the large end portion and the small end portion of the laminate is larger than the number of stacked layers in the center of the laminate between the large end portion and the small end portion, and the number of stacked layers is increased. A connecting rod assembly characterized in that the thickness of the portion is greater than the thickness of the central portion of the laminate. 請求項１または請求項２において、前記円環状部品がシェル型軸受の外輪であるコンロッドアセンブリ。   3. The connecting rod assembly according to claim 1, wherein the annular part is an outer ring of a shell type bearing. 請求項１または請求項２において、前記円環状部品がソリッド円管であり、このソリッド円管内に保持器付き針状ころを配したコンロッドアセンブリ。   3. The connecting rod assembly according to claim 1, wherein the annular part is a solid circular pipe, and needle rollers with a cage are arranged in the solid circular pipe. 請求項１または請求項２において、前記円環状部品が滑り軸受となるドライメタルであるコンロッドアセンブリ。   3. The connecting rod assembly according to claim 1 or 2, wherein the annular part is a dry metal serving as a sliding bearing. 請求項１ないし請求項５のいずれか１項において、積層方向に対して最も外側となる積層部品と、その内側の積層部品とに、両積層部品を相互に結合する結合用突起および凹部を設けたコンロッドアセンブリ。   6. The coupling protrusion and the concave portion for coupling the two laminated parts to each other in the laminated part that is the outermost side in the laminating direction and the laminated part inside the laminated part according to any one of claims 1 to 5. Connecting rod assembly.
JP2007090046A 2007-03-30 2007-03-30 Connecting rod assembly Pending JP2008249001A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013100086A (en) * 2011-11-09 2013-05-23 Valeo Systemes D'essuyage Wiper arm linkage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013100086A (en) * 2011-11-09 2013-05-23 Valeo Systemes D'essuyage Wiper arm linkage system

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