JP2013002550A - Pin type holder and roller bearing - Google Patents

Pin type holder and roller bearing Download PDF

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JP2013002550A
JP2013002550A JP2011134207A JP2011134207A JP2013002550A JP 2013002550 A JP2013002550 A JP 2013002550A JP 2011134207 A JP2011134207 A JP 2011134207A JP 2011134207 A JP2011134207 A JP 2011134207A JP 2013002550 A JP2013002550 A JP 2013002550A
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annular body
pin
peripheral surface
outer peripheral
hole
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JP5803310B2 (en
JP2013002550A5 (en
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Kazushige Otsuka
和茂 大塚
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JTEKT Corp
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JTEKT Corp
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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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/52—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers
    • F16C33/523—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers with pins extending into holes or bores on the axis of the rollers
    • F16C33/526—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers with pins extending into holes or bores on the axis of the rollers extending through the rollers and joining two lateral cage parts
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a pin type holder in which the damage to a welding part can be suppressed by reducing a moment load applied to the welding part of a fixing part fixing an annular body and a pin, and to provide a roller bearing.SOLUTION: An outer circumferential surface part is positioned between an end face 80, at a side of a second annular body 52, of a first annular body 51 in an outer circumferential surface of a pin 53 and an end face 81, at a side of the first annular body 51, of the second annular body 52. The outer circumferential surface part is covered with a hard carbon film 84 as a whole.

Description

本発明は、ピンタイプ保持器およびころ軸受に関する。   The present invention relates to a pin type cage and a roller bearing.

従来、ピンタイプ保持器としては、実開昭５６−１１５０３３号公報（特許文献１）に記載されているものがある。このピンタイプ保持器は、第１環状体と、第２環状体と、複数のピンとを備え、上記第１環状体は、その第１環状体の周方向に互いに間隔をおいて位置する複数のねじ穴を有する一方、上記第２環状体は、その第２環状体の周方向に互いに間隔をおいて位置する複数の貫通穴を有している。   Conventionally, as a pin type retainer, there is one described in Japanese Utility Model Publication No. 56-115033 (Patent Document 1). The pin type retainer includes a first annular body, a second annular body, and a plurality of pins. The first annular body includes a plurality of pins that are spaced apart from each other in the circumferential direction of the first annular body. On the other hand, the second annular body has a plurality of through holes that are spaced apart from each other in the circumferential direction of the second annular body.

上記ピンは、円筒ころの貫通穴に挿入されるようになっている。上記ピンは、そのピンの一端部に雄ねじを有し、その雄ねじを、第１環状体のねじ穴に螺合している。また、上記ピンの他端部は、第２環状体のねじ穴に圧入されているテーパブッシュの内面に圧入され、第２環状体の軸方向の第１環状体側とは反対側からの溶接により、第２環状体に固定されている。   The pin is inserted into the through hole of the cylindrical roller. The pin has a male screw at one end of the pin, and the male screw is screwed into the screw hole of the first annular body. The other end of the pin is press-fitted into the inner surface of the taper bush that is press-fitted into the screw hole of the second annular body, and is welded from the side opposite to the first annular body side in the axial direction of the second annular body. The second annular body is fixed.

上記従来のピンタイプ保持器は、第１環状体とピンとが螺合されていてルーズフィットになっていて、円筒ころの進み遅れに基づく円筒ころからのピンへの衝撃力や、円筒ころの自転に基づく、ピンと円筒ころ内径とのすべり摩擦力等の力が、上記固定部に集中的にかかるようになっているから、固定部のうちで強度が最も弱い溶接部の角部に亀裂が生じ易いという問題がある。また、ピンに付与された衝撃エネルギー等のエネルギーを開放しにくくて、ピンに大きな応力がかかって、ピンに摩耗や折損が起こり易いという問題がある。   In the conventional pin type cage, the first annular body and the pin are screwed together to have a loose fit, and the impact force on the pin from the cylindrical roller based on the advance and delay of the cylindrical roller, and the rotation of the cylindrical roller Based on the above, the frictional force such as sliding friction between the pin and the cylindrical roller inner diameter is concentrated on the fixed part, so cracks occur at the corners of the welded part with the weakest strength among the fixed parts. There is a problem that it is easy. In addition, there is a problem in that it is difficult to release energy such as impact energy applied to the pin, and a large stress is applied to the pin, so that the pin is easily worn or broken.

実開昭５６−１１５０３３号公報Japanese Utility Model Publication No. 56-115033

そこで、本発明の課題は、環状体とピンとを固定する固定部の溶接部にかかるモーメント荷重を低減できて、溶接部の破損を抑制できるピンタイプ保持器およびころ軸受を提供することにある。   Therefore, an object of the present invention is to provide a pin type cage and a roller bearing that can reduce the moment load applied to the welded portion of the fixed portion that fixes the annular body and the pin, and can suppress the breakage of the welded portion.

上記課題を解決するため、この発明のピンタイプ保持器は、
周方向に互いに間隔をおいて位置する複数の貫通穴を有する第１環状体と、
上記第１環状体に対して上記第１環状体の軸方向に間隔をおいて位置すると共に、周方向に互いに間隔をおいて位置する複数の貫通穴を有する第２環状体と、
ころの貫通穴に挿通されると共に、上記第１環状体の上記複数の貫通穴に配置される一方側端部と、上記第２環状体の上記複数の貫通穴に配置される他方側端部とを有する複数のピンと、
上記第１環状体の上記貫通穴の上記第２環状体側とは反対側に位置して、上記第１環状体と上記ピンとに接触している溶接部と
を備え、
上記ピンの外周面における上記第１環状体の上記第２環状体側の端面と上記第２環状体の上記第１環状体側の端面との間に位置する外周面部の少なくとも一部は、硬質炭素皮膜で被覆されていることを特徴としている。 In order to solve the above problems, the pin type cage of the present invention is
A first annular body having a plurality of through holes positioned at intervals in the circumferential direction;
A second annular body having a plurality of through-holes positioned at an interval in the axial direction of the first annular body with respect to the first annular body and spaced from each other in the circumferential direction;
One side end portion inserted into the through hole of the roller and disposed in the plurality of through holes of the first annular body, and the other side end portion disposed in the plurality of through holes of the second annular body A plurality of pins having
A welded portion located on the opposite side of the through hole of the first annular body from the second annular body side and in contact with the first annular body and the pin;
At least a part of the outer peripheral surface portion located between the end surface on the second annular body side of the first annular body on the outer peripheral surface of the pin and the end surface on the first annular body side of the second annular body is a hard carbon film. It is characterized by being covered with.

尚、上記硬質炭素皮膜は、一般的に、ＤＬＣ（ダイヤモンドライクカーボン）膜といわれるものである。   The hard carbon film is generally called a DLC (diamond-like carbon) film.

本発明によれば、ピンの外周面における第１環状体の第２環状体側の端面と第２環状体の第１環状体側の端面との間に位置する外周面部の少なくとも一部に、平滑性に優れ、摩擦係数が低い硬質炭素皮膜が存在しているから、ころの進み遅れに基づくころからのピンへの衝撃力や、ころの自転に基づく、ピンところ内径とのすべりに起因するすべり摩擦を小さくできる。したがって、上記すべり摩擦に起因するねじれが生じにくくて、ねじれ荷重を大幅に低減できるから、溶接部にかかるねじれ荷重トルクを大幅に低減できて、溶接部の破損を抑制することができる。   According to the present invention, at least part of the outer peripheral surface portion located between the end surface on the second annular body side of the first annular body and the end surface on the first annular body side of the second annular body on the outer peripheral surface of the pin is smooth. Because there is a hard carbon film with excellent friction coefficient and low friction coefficient, the sliding friction caused by the sliding force with the inner diameter of the pin due to the impact force from the roller to the pin based on the advance and delay of the roller and the rotation of the roller Can be reduced. Therefore, the torsion caused by the sliding friction is less likely to occur, and the torsional load can be greatly reduced. Therefore, the torsional load torque applied to the welded part can be greatly reduced, and breakage of the welded part can be suppressed.

また、本発明によれば、ピンの外周面における第１環状体の第２環状体側の端面と第２環状体の第１環状体側の端面との間に位置する外周面部の少なくとも一部に、硬度が高い硬質炭素皮膜が存在しているから、ピンの強度を大きくできて、ピンの耐荷重性を大きくでき、ピンの寿命を大きくすることができる。   Further, according to the present invention, at least a part of the outer peripheral surface portion located between the end surface on the second annular body side of the first annular body and the end surface on the first annular body side of the second annular body on the outer peripheral surface of the pin, Since the hard carbon film having high hardness exists, the strength of the pin can be increased, the load resistance of the pin can be increased, and the life of the pin can be increased.

また、本発明のころ軸受は、
軌道面を有する第１軌道部材と、
軌道面を有する第２軌道部材と、
本発明のピンタイプ保持器と、
上記第１軌道部材の軌道面と、上記第２軌道部材の軌道面との間に配置されると共に、貫通穴を有して、その貫通穴に上記ピンタイプ保持器の上記ピンが挿通されているころと
を備えることを特徴としている。 The roller bearing of the present invention is
A first race member having a raceway surface;
A second race member having a raceway surface;
A pin type cage of the present invention;
The first track member is disposed between the track surface of the first track member and the track surface of the second track member, and has a through hole, and the pin of the pin type cage is inserted into the through hole. It is characterized by comprising

本発明によれば、ピンタイプ保持器の溶接部の破損を抑制できると共に、ピンの寿命を長くすることができるから、寿命を長くすることができる。   According to the present invention, damage to the welded portion of the pin type cage can be suppressed and the life of the pin can be extended, so that the life can be extended.

本発明のピンタイプ保持器によれば、第１環状体の第２環状体側の端面と、第２環状体の第１環状体側の端面との間に位置するピンの外周面の少なくとも一部に、平滑性に優れ、摩擦係数が低い硬質炭素皮膜が存在しているから、ころの進み遅れ等に基づく、ピンところ内径とのすべりに起因するすべり摩擦を小さくできる。したがって、上記すべり摩擦に起因するねじれが生じにくくて、ねじれ荷重を大幅に低減できるから、溶接部にかかるねじれ荷重トルクを大幅に低減できて、溶接部の破損を抑制することができる。   According to the pin type cage of the present invention, at least a part of the outer peripheral surface of the pin located between the end surface of the first annular body on the second annular body side and the end surface of the second annular body on the first annular body side. Further, since there is a hard carbon film having excellent smoothness and a low friction coefficient, it is possible to reduce sliding friction caused by sliding with the inner diameter of the pin based on the advance and delay of rollers. Therefore, the torsion caused by the sliding friction is less likely to occur, and the torsional load can be greatly reduced. Therefore, the torsional load torque applied to the welded part can be greatly reduced, and breakage of the welded part can be suppressed.

また、本発明のピンタイプ保持器によれば、上記ピンの外周面の上記少なくとも一部に、硬度が高い硬質炭素皮膜が存在しているから、ピンの強度を大きくできて、ピンの耐荷重性を大きくでき、ピンの寿命を長くすることができる。   Further, according to the pin type cage of the present invention, since the hard carbon film having high hardness exists on the at least part of the outer peripheral surface of the pin, the strength of the pin can be increased and the load resistance of the pin can be increased. Can be increased, and the life of the pin can be extended.

本発明の一実施形態の円錐ころ軸受の断面図である。It is sectional drawing of the tapered roller bearing of one Embodiment of this invention.

以下、本発明を図示の形態により詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the drawings.

図１は、本発明の一実施形態の円錐ころ軸受の断面図である。   FIG. 1 is a sectional view of a tapered roller bearing according to an embodiment of the present invention.

この円錐ころ軸受は、第１軌道部材としての外輪１と、第２軌道部材としての内輪２と、ころ組立体７とを備え、ころ組立体７は、複数の円錐ころ３と、ピンタイプ保持器（以下、単に保持器という）５とを一体化してなっている。上記保持器５は、第１環状体５１、第２環状体５２、複数のピン５３および溶接部５４を有している。   The tapered roller bearing includes an outer ring 1 as a first race member, an inner ring 2 as a second race member, and a roller assembly 7. The roller assembly 7 includes a plurality of tapered rollers 3 and a pin type holding member. A vessel (hereinafter simply referred to as a cage) 5 is integrated. The cage 5 includes a first annular body 51, a second annular body 52, a plurality of pins 53, and a welded portion 54.

上記第１環状体５１は、複数の貫通穴６１を有し、各貫通穴６１は、第１環状体５１の軸方向の一方の端面から他方の端面まで直線状に延在している。上記複数の貫通穴６１は、第１環状体５１の周方向に、互いに略等しい間隔をおいた状態で配置されている。   The first annular body 51 has a plurality of through holes 61, and each through hole 61 extends linearly from one end surface in the axial direction of the first annular body 51 to the other end surface. The plurality of through holes 61 are arranged in the circumferential direction of the first annular body 51 with substantially equal intervals therebetween.

上記第２環状体５２は、第１環状体５１に第１環状体５１の軸方向に対向している。上記第２環状体５２は、複数のねじ穴６２を有し、各ねじ穴６２は、第２環状体５２の軸方向の一方の端面から他方の端面まで直線状に延在している。上記複数のねじ穴６２は、第２環状体５２の周方向に、互いに略等しい間隔をおいた状態で配置されている。   The second annular body 52 faces the first annular body 51 in the axial direction of the first annular body 51. The second annular body 52 has a plurality of screw holes 62, and each screw hole 62 extends linearly from one end surface in the axial direction of the second annular body 52 to the other end surface. The plurality of screw holes 62 are arranged in the circumferential direction of the second annular body 52 with substantially equal intervals therebetween.

上記ピン５３は、円錐ころ３の貫通穴３１に挿通されている。上記ピン５３は、一方側端部８９と、他方側端部９０とを有する。上記一方側端部８９は、第１環状体５１の貫通穴６１内に配置されている。   The pin 53 is inserted through the through hole 31 of the tapered roller 3. The pin 53 has one end 89 and the other end 90. The one side end portion 89 is disposed in the through hole 61 of the first annular body 51.

上記一方側端部８９の外周面は、円筒外周面部９６と、円錐外周面部９７とを有し、円筒外周面部９６は、第１環状体５１の貫通穴６１の内周面に隙間嵌めにより内嵌されている。また、上記円錐外周面部９７は、円筒外周面部９６よりもピン５３の軸方向の一端部側に位置している。   The outer peripheral surface of the one-side end portion 89 has a cylindrical outer peripheral surface portion 96 and a conical outer peripheral surface portion 97, and the cylindrical outer peripheral surface portion 96 is inserted into the inner peripheral surface of the through hole 61 of the first annular body 51 by a clearance fit. It is fitted. Further, the conical outer peripheral surface portion 97 is located closer to the one end side in the axial direction of the pin 53 than the cylindrical outer peripheral surface portion 96.

上記溶接部５４は、環状部７４と、蓋部７５とを有する。上記環状部７４は、円筒外周面部９６の軸方向の円錐外周面部９７側の端部から円錐外周面部９７の軸方向の外方側の端まで軸方向に延在している。上記環状部７４は、その軸方向の存在位置において、第１環状体５１の貫通穴６１の内周面と、一方側端部８９との間に隙間無く存在している。また、上記蓋部７５は、環状部７４の軸方向の外方側の端部につながっている。上記蓋部７５の軸方向の外方側の端面は、保持器５の外面に露出している。上記蓋部７５は、第１環状体５１の貫通穴６１の軸方向の外方側の開口を隙間無く塞いでいる。このように、上記溶接部５４は、第１環状体５１の貫通穴６１の第２環状体５２側とは反対側に位置する部分を有している。上記溶接部５４は、第１環状体５１と、ピン５３とに接触している。上記溶接部５４は、第１環状体５１の貫通穴６１に対して一方側端部８９が相対移動できないようにしている。上記溶接部５４、第１環状体５１および一方側端部８９は、一体構造を構成している。一方、上記他方側端部９０の外周面は、雄ねじを有している。上記他方側端部９０の外周面の雄ねじと、第２環状体５２のねじ穴６２とは螺合により固定されている。   The welded portion 54 has an annular portion 74 and a lid portion 75. The annular portion 74 extends in the axial direction from an end portion on the conical outer peripheral surface portion 97 side in the axial direction of the cylindrical outer peripheral surface portion 96 to an end on the outer side in the axial direction of the conical outer peripheral surface portion 97. The annular portion 74 is present between the inner peripheral surface of the through hole 61 of the first annular body 51 and the one side end portion 89 at the axial position. The lid portion 75 is connected to the end portion of the annular portion 74 on the outer side in the axial direction. An end surface on the outer side in the axial direction of the lid portion 75 is exposed on the outer surface of the cage 5. The lid 75 closes the axially outward opening of the through hole 61 of the first annular body 51 without any gap. Thus, the weld 54 has a portion located on the opposite side of the through hole 61 of the first annular body 51 from the second annular body 52 side. The weld 54 is in contact with the first annular body 51 and the pin 53. The weld 54 prevents the one end 89 from moving relative to the through hole 61 of the first annular body 51. The weld 54, the first annular body 51, and the one end 89 constitute an integral structure. On the other hand, the outer peripheral surface of the other side end 90 has a male screw. The male screw on the outer peripheral surface of the other side end portion 90 and the screw hole 62 of the second annular body 52 are fixed by screwing.

上記各円錐ころ３は、貫通穴３１を有している。上記貫通穴３１の中心軸は、円錐ころ３の円錐外周面３２の中心軸と略一致している。上記円錐ころ３は、第１環状体５１と、第２環状体５２との間に配置されている。上記円錐ころ３の貫通穴３１には、ピン５３の軸部が挿通されている。上記各円錐ころ３の軸方向の移動は、第１環状体５１と第２環状体５２との間に制限され、各円錐ころ３は、保持器５から離脱不能になっている。上記ころ組立体７は、このようにして、複数の円錐ころ３と、保持器５とを一体化してなっている。上記ころ組立体７の複数の円錐ころ３は、外輪１の内周円錐軌道面１１と、内輪２の外周円錐軌道面２１との間に、保持器５によって保持された状態で、互いに間隔をおいて位置している。   Each of the tapered rollers 3 has a through hole 31. The central axis of the through hole 31 substantially coincides with the central axis of the conical outer peripheral surface 32 of the tapered roller 3. The tapered roller 3 is disposed between the first annular body 51 and the second annular body 52. The shaft portion of the pin 53 is inserted through the through hole 31 of the tapered roller 3. Movement of each tapered roller 3 in the axial direction is limited between the first annular body 51 and the second annular body 52, and each tapered roller 3 cannot be detached from the cage 5. In this way, the roller assembly 7 integrates the plurality of tapered rollers 3 and the cage 5. The plurality of tapered rollers 3 of the roller assembly 7 are spaced from each other while being held by the cage 5 between the inner circumferential conical raceway surface 11 of the outer ring 1 and the outer circumferential conical raceway surface 21 of the inner ring 2. Is located.

上記ピン５３の外周面における第１環状体５１の第２環状体５２側の端面８０と第２環状体５２の第１環状体５１側の端面８１との間に位置する外周面部の全面は、硬質炭素皮膜（ＤＬＣ膜）８４で被覆されている。この硬質炭素皮膜（ＤＬＣ膜）８４は、ピン５３の金属製の略丸棒状の本体部８５の外周面部の全面に、周知の方法、例えば、プラズマＣＶＤ（plasma-enhanced chemical vapor deposition）や、ＰＶＤ（physical vapor deposition)等で形成されている。   The entire outer peripheral surface portion of the outer peripheral surface of the pin 53 located between the end surface 80 of the first annular body 51 on the second annular body 52 side and the end surface 81 of the second annular body 52 on the first annular body 51 side is: It is covered with a hard carbon film (DLC film) 84. This hard carbon film (DLC film) 84 is formed on the entire outer peripheral surface of the metal body 85 of the pin 53 by a known method such as plasma CVD (plasma-enhanced chemical vapor deposition) or PVD. (Physical vapor deposition) or the like.

上記実施形態の保持器５によれば、上記第１環状体５１の第２環状体５２側の端面８０と、第２環状体５２の第１環状体５１側の端面８１との間に位置するピン５３の外周面の全面に、平滑性に優れ、摩擦係数が低い硬質炭素皮膜８４が存在しているから、円錐ころ３の進み遅れに基づく円錐ころ３からのピン５３への衝撃力や、円錐ころ３の自転に基づく、ピン５３と円錐ころ３内径とのすべりに起因するすべり摩擦を小さくできる。したがって、上記すべり摩擦に起因するねじれが生じにくくて、ねじれ荷重を大幅に低減できるから、溶接部５４にかかるねじれ荷重トルクを大幅に低減できて、溶接部５４の破損を抑制することができる。   According to the cage 5 of the above-described embodiment, the first annular body 51 is located between the end face 80 on the second annular body 52 side and the end face 81 of the second annular body 52 on the first annular body 51 side. Since the hard carbon film 84 having excellent smoothness and a low friction coefficient exists on the entire outer peripheral surface of the pin 53, the impact force from the tapered roller 3 to the pin 53 based on the advance and delay of the tapered roller 3, Sliding friction caused by sliding between the pin 53 and the inner diameter of the tapered roller 3 based on the rotation of the tapered roller 3 can be reduced. Therefore, the torsion caused by the sliding friction is less likely to occur, and the torsional load can be greatly reduced. Therefore, the torsional load torque applied to the welded part 54 can be greatly reduced, and damage to the welded part 54 can be suppressed.

また、上記実施形態の保持器５によれば、上記第１環状体５１の第２環状体５２側の端面８０と、第２環状体５２の第１環状体５１側の端面８１との間に位置するピン５３の外周面の全面に、硬度が高い硬質炭素皮膜８４が存在しているから、ピン５３の強度を大きくできて、ピン５３の耐荷重性を大きくでき、ピン５３の寿命を大きくすることができる。   Further, according to the cage 5 of the above embodiment, between the end surface 80 of the first annular body 51 on the second annular body 52 side and the end surface 81 of the second annular body 52 on the first annular body 51 side. Since the hard carbon film 84 having high hardness exists on the entire outer peripheral surface of the pin 53 positioned, the strength of the pin 53 can be increased, the load resistance of the pin 53 can be increased, and the life of the pin 53 can be increased. can do.

尚、上記実施形態の保持器５では、ピン５３の一方側端部８９の外周面の一部を、第１環状体５１の貫通穴６１の内周面に隙間嵌めにより内嵌したが、この発明では、ピンの一方側端部の外周面の全部を、第１環状体の貫通穴の内周面に隙間嵌めにより内嵌しても良い。また、この発明では、ピンの一方側端部の外周面の一部または全部を、第１環状体の貫通穴の内周面に中間嵌めや、締まり嵌めにより内嵌しても良い。   In the cage 5 of the above-described embodiment, a part of the outer peripheral surface of the one end portion 89 of the pin 53 is fitted into the inner peripheral surface of the through hole 61 of the first annular body 51 by gap fitting. In the invention, the entire outer peripheral surface of the one end portion of the pin may be internally fitted to the inner peripheral surface of the through hole of the first annular body by a clearance fit. In the present invention, part or all of the outer peripheral surface of the one end portion of the pin may be internally fitted to the inner peripheral surface of the through hole of the first annular body by intermediate fitting or interference fitting.

また、上記実施形態の保持器５では、ピンの一方側端部８９と、第１環状体５１の貫通穴６１との間にブッシュを介在させずに、一方側端部８９と、第１環状体５１の貫通穴６１とを溶接部５４により一体化した。しかしながら、この発明では、少なくとも一箇所で、ピンの穴配置部と、環状体の貫通穴との間に、環状または非環状のブッシュが介在した状態で、溶接によって、ピンの穴配置部と、環状体の貫通穴と、上記ブッシュとを、一体化しても良い。また、この発明では、第１環状体に対するピンの相対移動を防止すると共に、第２環状体に対するピンの相対移動を防止することができる係止であれば、第１環状体とピンとは、溶接部を用いる如何なる構造により係止されていても良く、第２環状体とピンとも、如何なる構造により係止されていても良い。   In the cage 5 of the above embodiment, the bushing is not interposed between the one end portion 89 of the pin and the through hole 61 of the first annular body 51, and the first end portion 89 and the first annular portion The through hole 61 of the body 51 is integrated with the welded portion 54. However, in the present invention, at least at one place, the hole arrangement portion of the pin is welded by welding with an annular or non-annular bush interposed between the hole arrangement portion of the pin and the through hole of the annular body. The through hole of the annular body and the bush may be integrated. Moreover, in this invention, if it is the latching which can prevent the relative movement of the pin with respect to the 2nd annular body while preventing the relative movement of the pin with respect to the 1st annular body, the 1st annular body and the pin are welded. It may be locked by any structure using the portion, and the second annular body and the pin may be locked by any structure.

また、上記実施形態の保持器５では、上記ピン５３の外周面における第１環状体５１の第２環状体５２側の端面８０と第２環状体５２の第１環状体５１側の端面８１との間に位置する外周面部の全面が、硬質炭素皮膜（ＤＬＣ膜）８４で被覆されていた。しかしながら、この発明では、ピンの外周面における第１環状体の第２環状体側の端面と第２環状体の第１環状体側の端面との間に位置する外周面部の少なくとも一部が、硬質炭素皮膜で被覆されていれば良い。   In the cage 5 of the above embodiment, the end surface 80 of the first annular body 51 on the second annular body 52 side and the end surface 81 of the second annular body 52 on the first annular body 51 side on the outer peripheral surface of the pin 53 The entire outer peripheral surface portion located between the two was covered with a hard carbon film (DLC film) 84. However, in this invention, at least a part of the outer peripheral surface portion located between the end surface on the second annular body side of the first annular body and the end surface on the first annular body side of the second annular body on the outer peripheral surface of the pin is made of hard carbon. It only has to be covered with a film.

尚、ピンの外周面における第１環状体の第２環状体側の端面と第２環状体の第１環状体側の端面との間に位置する外周面部の一部を、硬質炭素皮膜で被覆する場合、その被覆する箇所は、上記外周面部の中央よりも軸方向の第２環状体側であることが望ましい。というのは、溶接部からより離れた箇所は、溶接部にかかるモーメント荷重の腕の長さが長いから、溶接部からより離れた箇所を硬質炭素皮膜で被覆した方が、溶接部にかかるねじれ荷重の低減効果を大きくすることができるからである。   In the case where a part of the outer peripheral surface portion located between the end surface on the second annular body side of the first annular body and the end surface on the first annular body side of the second annular body on the outer peripheral surface of the pin is covered with a hard carbon film. The part to be coated is preferably on the second annular body side in the axial direction from the center of the outer peripheral surface part. This is because the part of the moment load applied to the welded part is longer at the part farther from the welded part, so the part that is further away from the welded part is covered with the hard carbon film to twist the welded part. This is because the effect of reducing the load can be increased.

また、上記実施形態の保持器５では、ピン５３の外周面における第１環状体５１の第２環状体５２側の端面よりも溶接部５４側には、硬質炭素皮膜が形成されなかった。しかしながら、この発明では、ピンの外周面における第１環状体の第２環状体側の端面よりも溶接部側の溶接部が形成されない部分に、硬質炭素皮膜を形成しても良い。   Further, in the cage 5 of the above embodiment, the hard carbon film was not formed on the welded portion 54 side of the outer peripheral surface of the pin 53 on the second annular body 52 side end surface of the first annular body 51. However, in this invention, you may form a hard carbon film in the part in which the welding part by the side of a welding part is not formed rather than the end surface by the side of the 2nd annular body of the 1st annular body in the outer peripheral surface of a pin.

また、上記実施形態の円錐ころ軸受は、保持器５と、円錐ころ３とを有していたが、この発明のころ軸受は、ピンタイプ保持器と、円筒ころとを有していても良く、また、この発明のころ軸受は、ピンタイプ保持器と、凸面ころ（球面ころ）とを有していても良い。   In addition, the tapered roller bearing of the above embodiment has the cage 5 and the tapered roller 3, but the roller bearing of the present invention may have a pin type cage and a cylindrical roller. The roller bearing of the present invention may have a pin type cage and convex rollers (spherical rollers).

尚、ピンの外周面に雄ねじを形成する場合、ピンの外周面において、雄ねじが形成される部分に、硬質炭素皮膜を形成しない方が良い。というのは、雄ねじに硬質炭素皮膜が形成されると、雄ねじの摩擦係数が低くなって、雄ねじと雌ねじとの係止力が低下して、雄ねじと雌ねじとの螺合に緩みが発生し易くなるからである。   In addition, when forming an external thread in the outer peripheral surface of a pin, it is better not to form a hard carbon film in the part in which the external thread is formed in the outer peripheral surface of a pin. This is because when the hard carbon film is formed on the male screw, the coefficient of friction of the male screw is lowered, the locking force between the male screw and the female screw is reduced, and the male screw and the female screw are likely to loosen. Because it becomes.

１ 外輪
２ 内輪
３ 円錐ころ
５ 保持器
１１ 外輪の内周円錐軌道面
２１ 内輪の外周円錐軌道面
３１ 円錐ころの貫通穴
５１ 第１環状体
５２ 第２環状体
５３ ピン
５４ 溶接部
６１ 第１環状体の貫通穴
６２ 第２環状体のねじ穴
８０ 第１環状体の第２環状体側の端面
８１ 第２環状体の第１環状体側の端面
８４ 硬質炭素皮膜
８９ 一方側端部
９０ 他方側端部 DESCRIPTION OF SYMBOLS 1 Outer ring 2 Inner ring 3 Tapered roller 5 Cage 11 Inner circumference conical raceway surface of outer ring 21 Outer circumference conical raceway surface of inner ring 31 Through hole of tapered roller 51 First annular body 52 Second annular body 53 Pin 54 Welding portion 61 First annular Through-hole 62 of body The screw hole of the second annular body 80 The end surface of the first annular body on the second annular body side 81 The end surface of the second annular body on the first annular body side 84 Hard carbon coating 89 One end part 90 The other end part

Claims (2)

周方向に互いに間隔をおいて位置する複数の貫通穴を有する第１環状体と、
上記第１環状体に対して上記第１環状体の軸方向に間隔をおいて位置すると共に、周方向に互いに間隔をおいて位置する複数の貫通穴を有する第２環状体と、
ころの貫通穴に挿通されると共に、上記第１環状体の上記複数の貫通穴に配置される一方側端部と、上記第２環状体の上記複数の貫通穴に配置される他方側端部とを有する複数のピンと、
上記第１環状体の上記貫通穴の上記第２環状体側とは反対側に位置して、上記第１環状体と上記ピンとに接触している溶接部と
を備え、
上記ピンの外周面における上記第１環状体の上記第２環状体側の端面と上記第２環状体の上記第１環状体側の端面との間に位置する外周面部の少なくとも一部は、硬質炭素皮膜で被覆されていることを特徴とするピンタイプ保持器。 A first annular body having a plurality of through holes positioned at intervals in the circumferential direction;
A second annular body having a plurality of through-holes positioned at an interval in the axial direction of the first annular body with respect to the first annular body and spaced from each other in the circumferential direction;
One side end portion inserted into the through hole of the roller and disposed in the plurality of through holes of the first annular body, and the other side end portion disposed in the plurality of through holes of the second annular body A plurality of pins having
A welded portion located on the opposite side of the through hole of the first annular body from the second annular body side and in contact with the first annular body and the pin;
At least a part of the outer peripheral surface portion located between the end surface on the second annular body side of the first annular body on the outer peripheral surface of the pin and the end surface on the first annular body side of the second annular body is a hard carbon film. Pin-type cage characterized by being coated with. 軌道面を有する第１軌道部材と、
軌道面を有する第２軌道部材と、
請求項１に記載のピンタイプ保持器と、
上記第１軌道部材の軌道面と、上記第２軌道部材の軌道面との間に配置されると共に、貫通穴を有して、その貫通穴に上記ピンタイプ保持器の上記ピンが挿通されているころと
を備えることを特徴とするころ軸受。 A first race member having a raceway surface;
A second race member having a raceway surface;
A pin type retainer according to claim 1;
The first track member is disposed between the track surface of the first track member and the track surface of the second track member, and has a through hole, and the pin of the pin type cage is inserted into the through hole. A roller bearing comprising a roller.
JP2011134207A 2011-06-16 2011-06-16 Pin type cage and roller bearing Expired - Fee Related JP5803310B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014000390A1 (en) 2013-01-10 2014-07-10 Suzuki Motor Corp. Cylinder head of an engine
CN105485160A (en) * 2015-12-29 2016-04-13 瓦房店轴承集团有限责任公司 Hollow roller thrust conical rolling bearing provided with star-shaped struts
KR102545085B1 (en) * 2023-03-23 2023-06-20 연경기초소재 주식회사 Filler Composition for Pavement of Asphalt Roads Comprising Waste slaked lime

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11325063A (en) * 1998-05-14 1999-11-26 Nippon Seiko Kk Roller bearing
JP2011064218A (en) * 2009-09-15 2011-03-31 Tsubakimoto Chain Co Wear-resistant chain

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11325063A (en) * 1998-05-14 1999-11-26 Nippon Seiko Kk Roller bearing
JP2011064218A (en) * 2009-09-15 2011-03-31 Tsubakimoto Chain Co Wear-resistant chain

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014000390A1 (en) 2013-01-10 2014-07-10 Suzuki Motor Corp. Cylinder head of an engine
CN105485160A (en) * 2015-12-29 2016-04-13 瓦房店轴承集团有限责任公司 Hollow roller thrust conical rolling bearing provided with star-shaped struts
KR102545085B1 (en) * 2023-03-23 2023-06-20 연경기초소재 주식회사 Filler Composition for Pavement of Asphalt Roads Comprising Waste slaked lime

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