JP2009127804A - Shaft device with bearing - Google Patents

Shaft device with bearing Download PDF

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JP2009127804A
JP2009127804A JP2007305790A JP2007305790A JP2009127804A JP 2009127804 A JP2009127804 A JP 2009127804A JP 2007305790 A JP2007305790 A JP 2007305790A JP 2007305790 A JP2007305790 A JP 2007305790A JP 2009127804 A JP2009127804 A JP 2009127804A
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shaft
diameter surface
outer diameter
coupling member
bearing
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Yoshitaka Waseda
義孝 早稲田
Kunihiro Yamaguchi
晋弘 山口
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JTEKT Corp
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JTEKT Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a shaft device with a bearing capable of easily assembling a block body and reducing the costs without generating a press-in flaw on the a block body such as a cam block on the outer diameter surface of a shaft. <P>SOLUTION: The block body 14 and the rolling bearing 31 are disposed at a predetermined interval in an axial direction of the outside diameter surface of the shaft 12. A middle connection member 40 is assembled to a shaft portion in which the block body 14 of the outside diameter surface of the shaft 12 is disposed. The block body 14 is fitted and secured to the outside diameter surface of the shaft 12 via the middle connection member 40. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、シャフトと、駒体と、転がり軸受とを備えた軸受付きシャフト装置に関する。   The present invention relates to a bearing-equipped shaft device including a shaft, a piece, and a rolling bearing.

シャフトと、駒体と、転がり軸受とを備えた軸受付きシャフト装置としては、例えば、内燃機関のシリンダヘッド部に回転可能に組み付けられる軸受付きカムシャフト装置がある。
軸受付きシャフト装置がカムシャフト装置である場合、シャフト、所定数のカム駒（駒体に相当する）、及びシャフトの外径面の一部を内輪軌道面とする転がり軸受がそれぞれ個別に形成された後、シャフトの外径面の軸方向に、カムと転がり軸受とが所定の間隔を保って所定順に嵌合されて固定されるものがある。
また、シャフトの軸上にカム駒を嵌挿して固定するものとしては、例えば、特許文献１に開示されている。
特開２００１−４０１０号公報 As a shaft device with a bearing provided with a shaft, a frame, and a rolling bearing, for example, there is a cam shaft device with a bearing that is rotatably assembled to a cylinder head portion of an internal combustion engine.
When the shaft device with a bearing is a camshaft device, a shaft, a predetermined number of cam pieces (corresponding to a piece), and rolling bearings each having a part of the outer diameter surface of the shaft as an inner raceway surface are individually formed. After that, some cams and rolling bearings are fitted and fixed in a predetermined order at a predetermined interval in the axial direction of the outer diameter surface of the shaft.
Moreover, as what inserts and fixes a cam piece on the axis | shaft of a shaft, it is disclosed by patent document 1, for example.
JP 2001-4010 A

ところで、常温の状態で、シャフトの外径面の軸方向に、その外径面の一部を内輪軌道面とする転がり軸受と、カム駒とを所定の間隔を保って嵌合（圧入）すると、シャフトの外径面の一部をなす内輪軌道面にカム駒の圧入傷が発生し、転がり軸受としての機能が悪化される。このため、シャフトの外径面を熱処理等によって所要とする硬度に表面処理した後、冷し嵌めによって転がり軸受と、カム駒とを所定の間隔を保って圧入する必要があり、コスト高なる。   By the way, when a rolling bearing having a part of the outer diameter surface as an inner ring raceway surface and a cam piece are fitted (press-fitted) at a predetermined interval in the axial direction of the outer diameter surface of the shaft in a normal temperature state. The cam piece is pressed into the inner ring raceway surface forming a part of the outer diameter surface of the shaft, and the function as a rolling bearing is deteriorated. For this reason, it is necessary to press-fit the rolling bearing and the cam piece at predetermined intervals by cold fitting after the outer diameter surface of the shaft is surface-treated to a required hardness by heat treatment or the like, resulting in an increase in cost.

この発明の目的は、前記問題点に鑑み、シャフトの外径面にカム駒等の駒体の圧入傷を発生させることなく、駒体を容易に組み付けることができ、コスト低減を図ることができる軸受付きシャフト装置を提供することである。   In view of the above problems, an object of the present invention is to easily assemble a piece without generating a press-fitting of a piece such as a cam piece on the outer diameter surface of the shaft, and to reduce costs. It is to provide a shaft device with a bearing.

前記目的を達成するために、この発明の請求項１に係る軸受付きシャフト装置は、シャフトの外径面の軸方向に、駒体と、転がり軸受とが所定の間隔を保って配置される軸受付きシャフト装置であって、
前記シャフトの外径面の前記駒体が配置される軸部分には中間結合部材が組み付けられ、
前記駒体は、前記中間結合部材を介して前記シャフトの外径面に嵌合されて固定されていることを特徴とする。 In order to achieve the above object, a bearing-equipped shaft device according to a first aspect of the present invention is a bearing in which a frame body and a rolling bearing are arranged at a predetermined interval in the axial direction of the outer diameter surface of the shaft. With a shaft device,
An intermediate coupling member is assembled to the shaft portion on which the piece of the outer diameter surface of the shaft is disposed,
The piece is fitted and fixed to the outer diameter surface of the shaft through the intermediate coupling member.

前記構成によると、シャフトの外径面に中間結合部材を介して駒体を嵌合して固定することによって、駒体の圧入傷がシャフトの外径面に発生する不具合を解消することができる。
このため、従来と異なり、シャフトの外径面を熱処理等によって表面処理した後、冷し嵌めによってカム駒をシャフトの外径面に圧入する必要性を解消することができ、コスト低減において効果が大きい。 According to the said structure, the trouble which the press-fitting damage | damage of a frame body generate | occur | produces in the outer-diameter surface of a shaft can be eliminated by fitting and fixing a frame body to the outer-diameter surface of a shaft via an intermediate | middle coupling member. .
For this reason, unlike the conventional case, after the outer diameter surface of the shaft is surface-treated by heat treatment or the like, it is possible to eliminate the need to press-fit the cam piece into the outer diameter surface of the shaft by cold fitting, which is effective in reducing costs. large.

この発明の請求項２に係る軸受付きシャフト装置は、請求項１に記載の軸受付きシャフト装置であって、
中間結合部材は、シャフトの外径面の半径方向外側から組み付けられる半筒状の第１、第２分割体によって分割構成され、
シャフトの外径面に前記中間結合部材を介して駒体が嵌合されて固定されたときに前記第１、第２分割体の相対する端面の間に所定の隙間が設けられることを特徴とする。
前記構成によると、分割構成され中間結合部材の第１、第２分割体をシャフトの外径面の半径方向外側から組み付けた後、駒体を中間結合部材の第１、第２分割体の外径面に嵌合することによって、シャフトの外径面に中間結合部材を介して駒体を固定することができる。
さらに、駒体を嵌合して固定した状態において、第１、第２分割体の相対する端面の間に設けられる隙間によって、これら第１、第２分割体の内径面がシャフトの外径面に強固に圧着するため、シャフトの外径面に対する駒体の固定不良を防止することができる。 A shaft device with a bearing according to claim 2 of the present invention is the shaft device with a bearing according to claim 1,
The intermediate coupling member is divided and configured by semi-cylindrical first and second divided bodies assembled from the radially outer side of the outer diameter surface of the shaft,
A predetermined gap is provided between the opposing end faces of the first and second divided bodies when the frame is fitted and fixed to the outer diameter surface of the shaft via the intermediate coupling member. To do.
According to the above configuration, after the first and second divided bodies of the intermediate coupling member are assembled from the outside in the radial direction of the outer diameter surface of the shaft, the piece is attached to the outside of the first and second divided bodies of the intermediate coupling member. By fitting to the diameter surface, the frame body can be fixed to the outer diameter surface of the shaft via the intermediate coupling member.
Further, in a state where the frames are fitted and fixed, the inner diameter surface of the first and second divided bodies is made to be the outer diameter surface of the shaft by a gap provided between the opposing end surfaces of the first and second divided bodies. Therefore, it is possible to prevent improper fixing of the frame body to the outer diameter surface of the shaft.

この発明の請求項３に係る軸受付きシャフト装置は、請求項１に記載の軸受付きシャフト装置であって、
中間結合部材は、横断面Ｃ字筒状をなして拡径可能に形成され、
シャフトの外径面に駒体が嵌合されて固定されたときに両端面の間に所定の隙間が設けられることを特徴とする。
前記構成によると、シャフトの外径面に中間結合部材を拡径させて容易に組み付けた後、駒体を中間結合部材の外径面に嵌合することによって、シャフトの外径面に中間結合部材を介して駒体を固定することができる。
さらに、駒体を嵌合して固定した状態において、中間結合部材の両端面の間に設けられる隙間によって、中間結合部材の内径面がシャフトの外径面に強固に圧着するため、シャフトの外径面に対する駒体の固定不良を防止することができる。 A shaft device with a bearing according to claim 3 of the present invention is the shaft device with a bearing according to claim 1,
The intermediate coupling member is formed so as to be capable of expanding in diameter by forming a C-shaped cross section,
A predetermined gap is provided between both end surfaces when the frame body is fitted and fixed to the outer diameter surface of the shaft.
According to the above configuration, the intermediate coupling member is expanded on the outer diameter surface of the shaft and easily assembled, and then the frame is fitted to the outer diameter surface of the intermediate coupling member, thereby intermediate coupling to the outer diameter surface of the shaft. The frame body can be fixed via the member.
Further, in a state where the frame is fitted and fixed, the inner diameter surface of the intermediate coupling member is firmly pressed against the outer diameter surface of the shaft by the gap provided between both end surfaces of the intermediate coupling member. It is possible to prevent improper fixing of the frame to the radial surface.

次に、この発明を実施するための最良の形態を実施例にしたがって説明する。   Next, the best mode for carrying out the present invention will be described with reference to examples.

（実施例１）
この発明の実施例１を図１〜図５にしたがって説明する。
図１はこの発明の実施例１に係る軸受付きカムシャフト装置を示す縦断面図である。図２は軸受付きカムシャフト装置のシャフトの外径面の軸方向にカム駒ところ軸受とが固定された状態を拡大して示す縦断面図である。図３は図２のＩＩＩ−ＩＩＩ線に基づく断面図である。図４はシャフトの外径面に中間結合部材と構成する第１、第２分割体を組み付ける前の状態を示す説明図である。図５はシャフトの外径面に組み付けられた中間結合部材にカム駒が圧入される前の状態を示す説明図である。 (Example 1)
A first embodiment of the present invention will be described with reference to FIGS.
1 is a longitudinal sectional view showing a camshaft device with a bearing according to Embodiment 1 of the present invention. FIG. 2 is an enlarged longitudinal sectional view showing a state in which the cam piece and the bearing are fixed in the axial direction of the outer diameter surface of the shaft of the camshaft device with a bearing. FIG. 3 is a cross-sectional view based on the line III-III in FIG. FIG. 4 is an explanatory view showing a state before the first and second divided bodies constituting the intermediate coupling member are assembled to the outer diameter surface of the shaft. FIG. 5 is an explanatory view showing a state before the cam piece is press-fitted into the intermediate coupling member assembled to the outer diameter surface of the shaft.

図１に示すように、この実施例１においては、軸受付きシャフト装置が内燃機関のシリンダヘッド部に組み付けられる軸受付きカムシャフト装置（カムシャフトユニット）１１である場合を例示する。
軸受付きカムシャフト装置１１は、シャフト１２の外径面の軸方向に、駒体としての複数のカム駒１４と、転がり軸受としての複数のシェル形のころ軸受（ころ軸受も含む）３１とが所定の間隔を保って組み付けられてユニット化されている。 As shown in FIG. 1, the first embodiment exemplifies a case where the shaft device with bearing is a camshaft device with bearing (camshaft unit) 11 assembled to a cylinder head portion of an internal combustion engine.
The camshaft device 11 with a bearing has a plurality of cam pieces 14 as a frame body and a plurality of shell-shaped roller bearings (including roller bearings) 31 as rolling bearings in the axial direction of the outer diameter surface of the shaft 12. The unit is assembled with a predetermined interval.

図２と図３に示すように、複数のカム駒１４は、中間結合部材４０を介してシャフト１２の外径面に圧入固定されている。
この実施例１において、シャフト１２の外径面の複数のカム駒１４が配置される軸部分に中間結合部材４０が組み付けらる。
この実施例１において、中間結合部材４０は、鋼鉄等の金属材、合成樹脂、ゴム等の弾性体等より形成され、シャフト１２の外径面の半径方向外側から組み付け可能な半筒状の第１、第２分割体４１、４５によって分割構成されている。
そして、シャフト１２の外径面に中間結合部材４０を介してカム駒１４が圧入固定されたときに第１、第２分割体４１、４５の相対する端面の間に所定の隙間Ｓ１が設けられる。 As shown in FIGS. 2 and 3, the plurality of cam pieces 14 are press-fitted and fixed to the outer diameter surface of the shaft 12 via the intermediate coupling member 40.
In the first embodiment, the intermediate coupling member 40 is assembled to the shaft portion on the outer diameter surface of the shaft 12 where the plurality of cam pieces 14 are disposed.
In the first embodiment, the intermediate coupling member 40 is formed of a metal material such as steel, an elastic body such as synthetic resin, rubber, or the like, and is a semi-cylindrical first member that can be assembled from the outside in the radial direction of the outer diameter surface of the shaft 12. 1 and a second divided body 41, 45.
When the cam piece 14 is press-fitted and fixed to the outer diameter surface of the shaft 12 via the intermediate coupling member 40, a predetermined gap S1 is provided between the opposing end surfaces of the first and second divided bodies 41 and 45. .

すなわち、図４と図５に示すように、自由状態における第１、第２分割体４１、４５の内径寸法は、シャフト１２の外径寸法と同じ又は僅かに小さく設定され、第１、第２分割体４１、４５の外径寸法は、カム駒１４の内径寸法（内孔の孔径寸法）よりも若干大きく設定されている。
そして、シャフト１２の外径面の半径方向外側から第１、第２分割体４１、４５が嵌込まれて組み付けられると、第１、第２分割体４１、４５が自身の弾性力によってシャフト１２の外径面に密着すると共に、第１、第２分割体４１、４５の相対する端面の間に前記隙間Ｓ１に相当する隙間（隙間Ｓ１よりも僅かに大きい隙間）Ｓ１’が設けられる。
その後、第１、第２分割体４１、４５がなす中間結合部材４０の外径面にカム駒１４の内径面を所定の締め代で嵌合（圧入）することによって、シャフト１２の外径面に中間結合部材４０を介してカム駒１４が固定されるようになっている。 That is, as shown in FIGS. 4 and 5, the inner diameter dimension of the first and second divided bodies 41 and 45 in the free state is set to be the same as or slightly smaller than the outer diameter dimension of the shaft 12. The outer diameter dimensions of the divided bodies 41 and 45 are set slightly larger than the inner diameter dimension (hole diameter dimension of the inner hole) of the cam piece 14.
And if the 1st, 2nd division bodies 41 and 45 are inserted and assembled | attached from the radial direction outer side of the outer-diameter surface of the shaft 12, the 1st, 2nd division bodies 41 and 45 will be the shaft 12 by own elastic force. And a gap (slightly larger than the gap S1) S1 ′ corresponding to the gap S1 is provided between the opposing end faces of the first and second divided bodies 41 and 45.
Thereafter, the outer diameter surface of the shaft 12 is formed by fitting (press-fitting) the inner diameter surface of the cam piece 14 to the outer diameter surface of the intermediate coupling member 40 formed by the first and second divided bodies 41 and 45 with a predetermined tightening allowance. In addition, the cam piece 14 is fixed via the intermediate coupling member 40.

また、図２に示すように、ころ軸受３１は、シャフト１２の外径面を内輪軌道面３３とする複数の転動体としてのころ（針状ころも含む）３８と、これらころ３８を保持する保持器３９と、外輪（シェル）３５と備えている。そして、ころ軸受３１は、シャフト１２の一端側から嵌込まれて同シャフト１２の所定位置まで嵌挿されることで、シャフト１２の外径面を内輪軌道面３３として組み付けられる。   As shown in FIG. 2, the roller bearing 31 holds rollers (including needle rollers) 38 as a plurality of rolling elements whose outer diameter surface of the shaft 12 is an inner ring raceway surface 33, and these rollers 38. A cage 39 and an outer ring (shell) 35 are provided. The roller bearing 31 is fitted from one end side of the shaft 12 and is inserted to a predetermined position of the shaft 12, whereby the outer diameter surface of the shaft 12 is assembled as the inner ring raceway surface 33.

上述したように構成されるこの実施例１に係る軸受付きカムシャフト装置１１において、シャフト１２の外径面の軸方向の一端側から他端側に向けてカム駒１４ところ軸受３１とが順次に組み付けられることで軸受付きカムシャフト装置１１が構成される。
シャフト１２の外径面に中間結合部材４０を介してカム駒１４を所定の締め代をもって嵌合し固定する場合、まず、図４に示すように、シャフト１２の外径面の半径方向外側から第１、第２分割体４１、４５が嵌込まれて組み付けられる。
その後、図５に示すように、シャフト１２の外径面の軸方向の一端側からカム駒１４が挿入され、このカム駒１４が中間結合部材４０の外径面に所定の締め代をもって嵌合（圧入）されることによって、シャフト１２の外径面に中間結合部材４０を介してカム駒１４が固定される。 In the camshaft device 11 with a bearing according to the first embodiment configured as described above, the cam piece 14 and the bearing 31 are sequentially arranged from one end side to the other end side in the axial direction of the outer diameter surface of the shaft 12. The camshaft device 11 with a bearing is configured by being assembled.
When the cam piece 14 is fitted and fixed to the outer diameter surface of the shaft 12 via the intermediate coupling member 40 with a predetermined tightening allowance, first, as shown in FIG. The first and second divided bodies 41 and 45 are fitted and assembled.
After that, as shown in FIG. 5, the cam piece 14 is inserted from one axial end side of the outer diameter surface of the shaft 12, and the cam piece 14 is fitted to the outer diameter surface of the intermediate coupling member 40 with a predetermined tightening margin. By being (press-fitted), the cam piece 14 is fixed to the outer diameter surface of the shaft 12 via the intermediate coupling member 40.

図５に示すように、シャフト１２の外径面の軸方向の一端側からカム駒１４が挿入される際、シャフト１２の外径面とカム駒１４の内径面との間には、中間結合部材４０の肉厚に相当する分だけ隙間が生じることによって、シャフト１２の外径面にカム駒１４の圧入傷が生じない。
このため、従来と異なり、シャフトの外径面を熱処理等によって表面処理した後、冷し嵌めによってカム駒をシャフトの外径面に圧入する必要性を解消することができ、コスト低減において効果が大きい。 As shown in FIG. 5, when the cam piece 14 is inserted from one axial end of the outer diameter surface of the shaft 12, there is an intermediate coupling between the outer diameter surface of the shaft 12 and the inner diameter surface of the cam piece 14. Since the gap is generated by an amount corresponding to the thickness of the member 40, the cam piece 14 is not pressed into the outer diameter surface of the shaft 12.
For this reason, unlike the conventional case, after the outer diameter surface of the shaft is surface-treated by heat treatment or the like, it is possible to eliminate the need to press-fit the cam piece into the outer diameter surface of the shaft by cold fitting, which is effective in reducing costs. large.

また、この実施例１において、シャフト１２の外径面に中間結合部材４０を介してカム駒１４が嵌合されて固定された状態において、図３に示すように、中間結合部材４０を構成する第１、第２分割体４１、４５の相対する端面の間の隙間Ｓ１によって、これら第１、第２分割体４１、４５の縮径方向の変形が許容される。この結果、第１、第２分割体４１、４５の内径面がシャフト１２の外径面に強固に圧着するため、シャフト１２の外径面に対するカム駒１４の固定不良を防止することができる。   In the first embodiment, the intermediate coupling member 40 is configured as shown in FIG. 3 in a state where the cam piece 14 is fitted and fixed to the outer diameter surface of the shaft 12 via the intermediate coupling member 40. Due to the gap S1 between the opposing end surfaces of the first and second divided bodies 41 and 45, the first and second divided bodies 41 and 45 are allowed to deform in the reduced diameter direction. As a result, the inner diameter surfaces of the first and second divided bodies 41 and 45 are firmly pressure-bonded to the outer diameter surface of the shaft 12, so that improper fixing of the cam piece 14 to the outer diameter surface of the shaft 12 can be prevented.

（実施例２）
次に、この発明の実施例２を図６〜図８にしたがって説明する。
図６はこの発明の実施例２に係る軸受付きシャフト装置のシャフトの外径面の軸方向にカム駒が固定された状態を拡大して示す縦断面図である。図７は中間結合部材を示す横断面図である。図８はシャフトの外径面に組み付けられた中間結合部材にカム駒が圧入される前の状態を示す説明図である。 (Example 2)
Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 6 is an enlarged longitudinal sectional view showing a state in which the cam piece is fixed in the axial direction of the outer diameter surface of the shaft of the shaft device with bearing according to the second embodiment of the present invention. FIG. 7 is a cross-sectional view showing the intermediate coupling member. FIG. 8 is an explanatory view showing a state before the cam piece is press-fitted into the intermediate coupling member assembled to the outer diameter surface of the shaft.

図６に示すように、この実施例２においては、中間結合部材１４０は、鋼鉄等の金属材、合成樹脂、ゴム等の弾性体等より形成され、シャフト１２の外径面の半径方向外側又は軸端から組み付け可能な横断面Ｃ字筒状をなして拡径可能に形成されている。
また、中間結合部材１４０は、この中間結合部材１４０を介してシャフト１２の外径面にカム駒１４が嵌合されて固定されたときに、中間結合部材１４０の両端面の間に所定の隙間Ｓ２が設けられる。
さらに、自由状態における中間結合部材１４０の内径寸法は、シャフト１２の外径寸法と同じ又は僅かに小さく設定され、中間結合部材１４０の外径寸法は、カム駒１４の内径寸法（内孔の孔径寸法）よりも若干大きく設定されている。
また、図８に示すように、カム駒１４が嵌合される前の状態で、シャフト１２の外径面に中間結合部材１４０が嵌合された状態において、中間結合部材１４０の両端面の間に前記隙間Ｓ２に相当する隙間（隙間Ｓ２よりも僅かに大きい隙間）Ｓ２’が設けられる。
この実施例２のその他の構成は実施例１と同様に構成されるため、その説明は省略する。 As shown in FIG. 6, in the second embodiment, the intermediate coupling member 140 is formed of a metal material such as steel, an elastic body such as a synthetic resin, rubber, or the like, and is radially outward of the outer diameter surface of the shaft 12 or It is formed so that the diameter can be expanded by forming a C-shaped cross section that can be assembled from the shaft end.
Further, the intermediate coupling member 140 has a predetermined gap between both end surfaces of the intermediate coupling member 140 when the cam piece 14 is fitted and fixed to the outer diameter surface of the shaft 12 via the intermediate coupling member 140. S2 is provided.
Further, the inner diameter dimension of the intermediate coupling member 140 in the free state is set to be the same as or slightly smaller than the outer diameter dimension of the shaft 12, and the outer diameter dimension of the intermediate coupling member 140 is equal to the inner diameter dimension of the cam piece 14 (the hole diameter of the inner hole). It is set slightly larger than (dimension).
Further, as shown in FIG. 8, between the both end faces of the intermediate coupling member 140 in a state where the intermediate coupling member 140 is fitted to the outer diameter surface of the shaft 12 before the cam piece 14 is fitted. A gap (a gap slightly larger than the gap S2) S2 ′ corresponding to the gap S2 is provided.
Since other configurations of the second embodiment are configured in the same manner as the first embodiment, the description thereof is omitted.

上述したように構成されるこの実施例２に係る軸受付きカムシャフト装置において、まず、シャフト１２の外径面の所定位置に中間結合部材１４０を組み付ける。この際、中間結合部材１４０を弾性的に拡開させることによって、シャフト１２の外径面を傷つけることなくその外径面の半径方向外側又は軸端から容易に組み付けることができる。
その後、シャフト１２の一端からカム駒１４を挿入し、このカム駒１４を中間結合部材１４０の外径面に所定の締め代をもって嵌合（圧入）することによって、シャフト１２の外径面に中間結合部材１４０を介してカム駒１４を固定することができる。
さらに、カム駒１４を固定した状態において、中間結合部材１４０の両端面の間の隙間Ｓ２によって、中間結合部材１４０の内径面がシャフト１２の外径面に強固に圧着するため、シャフト１２の外径面に対するカム駒１４の固定不良を防止することができる。 In the camshaft device with a bearing according to the second embodiment configured as described above, first, the intermediate coupling member 140 is assembled at a predetermined position on the outer diameter surface of the shaft 12. At this time, by elastically expanding the intermediate coupling member 140, the outer diameter surface of the shaft 12 can be easily assembled from the radially outer side or the shaft end without damaging the outer diameter surface.
Thereafter, the cam piece 14 is inserted from one end of the shaft 12, and the cam piece 14 is fitted (press-fit) to the outer diameter surface of the intermediate coupling member 140 with a predetermined tightening allowance, so that the cam piece 14 is inserted into the outer diameter surface of the shaft 12. The cam piece 14 can be fixed via the coupling member 140.
Further, in a state where the cam piece 14 is fixed, the inner diameter surface of the intermediate coupling member 140 is firmly pressed against the outer diameter surface of the shaft 12 by the gap S2 between both end surfaces of the intermediate coupling member 140. It is possible to prevent improper fixing of the cam piece 14 to the radial surface.

なお、この発明は、前記実施例１及び２に限定されるものではなく、この発明の要旨を逸脱しない範囲内において、種々の形態で実施可能である。
例えば、前記実施例１及び２においては、軸受付きシャフト装置が軸受付きカムシャフト装置１１である場合を例示したが、例えば、駒体としてウエート体を有する軸受付きバランサーシャフト装置でもよく、クランクシャフト装置等でもよい。 In addition, this invention is not limited to the said Example 1 and 2, In the range which does not deviate from the summary of this invention, it can implement with a various form.
For example, in the first and second embodiments, the case where the bearing-equipped shaft device is the camshaft device 11 with the bearing is illustrated, but for example, a bearing-equipped balancer shaft device having a weight body as a piece may be used. Etc.

この発明の実施例１に係る軸受付きカムシャフト装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the camshaft apparatus with a bearing which concerns on Example 1 of this invention. 同じく軸受付きカムシャフト装置のシャフトの外径面の軸方向にカム駒ところ軸受とが固定された状態を拡大して示す縦断面図である。It is the longitudinal cross-sectional view which expands and shows the state by which the cam piece and the bearing were fixed to the axial direction of the outer diameter surface of the shaft of the cam shaft apparatus with a bearing similarly. 同じく図２のＩＩＩ−ＩＩＩ線に基づく断面図である。It is sectional drawing based on the III-III line of FIG. 2 similarly. 同じくシャフトの外径面に中間結合部材と構成する第１、第２分割体を組み付ける前の状態を示す説明図である。It is explanatory drawing which shows the state before attaching the 1st, 2nd division body which comprises an intermediate | middle coupling member on the outer-diameter surface of a shaft similarly. 同じくシャフトの外径面に組み付けられた中間結合部材にカム駒が嵌合される前の状態を示す説明図である。It is explanatory drawing which shows the state before a cam piece is similarly fitted to the intermediate | middle coupling member assembled | attached to the outer-diameter surface of the shaft. この発明の実施例２に係る軸受付きカムシャフト装置のシャフトの外径面の軸方向にカム駒が固定された状態を拡大して示す縦断面図である。It is a longitudinal cross-sectional view which expands and shows the state by which the cam piece was fixed to the axial direction of the outer diameter surface of the shaft of the camshaft apparatus with a bearing which concerns on Example 2 of this invention. 同じく中間結合部材を示す横断面図である。It is a cross-sectional view which similarly shows an intermediate | middle coupling member. 同じくシャフトの外径面に組み付けられた中間結合部材にカム駒が圧入される前の状態を示す説明図である。It is explanatory drawing which shows the state before a cam piece is press-fit in the intermediate | middle coupling member similarly assembled | attached to the outer-diameter surface of the shaft.

符号の説明Explanation of symbols

１１ 軸受付きカムシャフト装置（軸受付きシャフト装置）
１２、１２１ シャフト
１４、１１４ カム駒（駒体）
３１、１３１、２３１ ころ軸受（転がり軸受）
３３、１３３ 内輪軌道面
４０、１４０ 中間結合部材
４１ 第１分割体
４５ 第２分割体
Ｓ１、Ｓ２ 隙間
11 Camshaft device with bearing (shaft device with bearing)
12, 121 Shaft 14, 114 Cam piece (frame)
31, 131, 231 Roller bearings (rolling bearings)
33, 133 Inner ring raceway surface 40, 140 Intermediate coupling member 41 First divided body 45 Second divided body S1, S2 Gap

Claims (3)

シャフトの外径面の軸方向に、駒体と、転がり軸受とが所定の間隔を保って配置される軸受付きシャフト装置であって、
前記シャフトの外径面の前記駒体が配置される軸部分には中間結合部材が組み付けられ、
前記駒体は、前記中間結合部材を介して前記シャフトの外径面に嵌合されて固定されていることを特徴とする軸受付きシャフト装置。 A shaft device with a bearing in which a frame body and a rolling bearing are arranged at a predetermined interval in the axial direction of the outer diameter surface of the shaft,
An intermediate coupling member is assembled to the shaft portion on which the piece of the outer diameter surface of the shaft is disposed,
The shaft body with a bearing is characterized in that the frame is fitted and fixed to the outer diameter surface of the shaft via the intermediate coupling member. 請求項１に記載の軸受付きシャフト装置であって、
中間結合部材は、シャフトの外径面の半径方向外側から組み付けられる半筒状の第１、第２分割体によって分割構成され、
シャフトの外径面に前記中間結合部材を介して駒体が嵌合されて固定されたときに前記第１、第２分割体の相対する端面の間に所定の隙間が設けられることを特徴とする軸受付きシャフト装置。 The shaft device with bearing according to claim 1,
The intermediate coupling member is divided and configured by semi-cylindrical first and second divided bodies assembled from the radially outer side of the outer diameter surface of the shaft,
A predetermined gap is provided between the opposing end faces of the first and second divided bodies when the frame is fitted and fixed to the outer diameter surface of the shaft via the intermediate coupling member. A shaft device with a bearing. 請求項１に記載の軸受付きシャフト装置であって、
中間結合部材は、横断面Ｃ字筒状をなして拡径可能に形成され、
シャフトの外径面に駒体が嵌合されて固定されたときに両端面の間に所定の隙間が設けられることを特徴とする軸受付きシャフト装置。 The shaft device with bearing according to claim 1,
The intermediate coupling member is formed so as to be capable of expanding in diameter by forming a C-shaped cross section,
A shaft device with a bearing, wherein a predetermined gap is provided between both end surfaces when a frame body is fitted and fixed to an outer diameter surface of the shaft.
JP2007305790A 2007-11-27 2007-11-27 Shaft device with bearing Pending JP2009127804A (en)

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JP2007305790A JP2009127804A (en) 2007-11-27 2007-11-27 Shaft device with bearing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10494959B2 (en) 2010-05-11 2019-12-03 Agap Hb Camshaft with detachable bearing journals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10494959B2 (en) 2010-05-11 2019-12-03 Agap Hb Camshaft with detachable bearing journals

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